WO2013172397A1 - Module de stockage d'énergie et son procédé de fabrication - Google Patents

Module de stockage d'énergie et son procédé de fabrication Download PDF

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Publication number
WO2013172397A1
WO2013172397A1 PCT/JP2013/063619 JP2013063619W WO2013172397A1 WO 2013172397 A1 WO2013172397 A1 WO 2013172397A1 JP 2013063619 W JP2013063619 W JP 2013063619W WO 2013172397 A1 WO2013172397 A1 WO 2013172397A1
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WIPO (PCT)
Prior art keywords
members
battery
plate
arrangement direction
storage module
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Ceased
Application number
PCT/JP2013/063619
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English (en)
Japanese (ja)
Inventor
竜治 河野
浩也 清水
正実 志田
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Hitachi Ltd
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Hitachi Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a power storage module including a plurality of power storage devices and a method for manufacturing the same.
  • Patent Document 1 As a background art regarding the technical field, for example, there is a technique disclosed in Patent Document 1.
  • Patent Document 1 a plurality of unit cells, a unit cell is stacked and accommodated in the thickness direction, a case having an opening at at least one end, and a unit cell fixed and stacked at the opening of the case.
  • a lid member that presses in the stacking direction, a bottom member provided between the cell and the case located on the opposite side of the opening of the case of the stacked unit cells, and the unit cell And a first tray that contacts the case, a lid member and the unit cell, and a second tray that contacts the case, a bottom member and the unit cell, and contacts the case.
  • a third tray is provided and the lid member and the bottom member are made of a material having a thermal conductivity smaller than any of the first tray, the second tray, and the third tray.
  • the number of power storage devices varies depending on the installed system, but includes a plurality of power storage devices.
  • the overcharge / discharge potential changes due to internal Joule heat and chemical reaction heat during charge / discharge.
  • the power storage device is charged, the amount of charge is limited by the capacitor with a low overcharge potential, and a sufficient amount of electrical energy cannot be stored in the capacitor with a high overcharge potential.
  • the power storage device is discharged, the amount of discharge is limited by the capacitor with a high overcharge potential, and electrical energy that is not discharged remains in the capacitor with a low overdischarge potential.
  • the amount of electrical energy that can be charged and discharged by the power storage device decreases due to temperature variations among the plurality of power storage devices.
  • the volume capacity density of the power storage device is increased, so that the operating performance can be improved in a system equipped with the power storage device. For example, in the case of a mobile object, the cruising distance per charge of the power storage device can be extended. Therefore, if the temperature variation of the plurality of capacitors can be further reduced as compared with the background art, the operation performance of the system including the power storage device can be further improved.
  • a representative problem to be solved by the present application is to provide a power storage module that is excellent in reducing temperature variations of a plurality of power storage devices.
  • a typical solution of the present application for solving the above representative problem is that a plurality of capacitors are housed in a casing, the plurality of capacitors are arranged in the thickness direction of the capacitors, and a heat insulating layer is formed on both sides of the capacitor arrangement direction of the plurality of capacitors.
  • a plate-like member is arranged on both sides of each of the plurality of capacitors in the direction in which the capacitors are arranged, and the abutting member of the housing provided corresponding to each of the plate-like members is opposed to the direction in which the capacitors are arranged
  • the plate-like member acts so as to press the capacitor in the capacitor arrangement direction, and by holding this state, each of the plurality of capacitors is sandwiched from both sides of the capacitor arrangement direction by the plate-like member. It is characterized by being tied up.
  • the heat of the capacitors arranged at both ends of the capacitor arrangement direction hardly flows in the capacitor arrangement direction, and flows in a direction orthogonal to the capacitor arrangement direction like the other capacitors. , It is suppressed that the heat of the capacitors arranged at both ends in the capacitor arrangement direction is dissipated more than the heat of other capacitors, and the heat transfer amount of the capacitors arranged at both ends in the capacitor arrangement direction, etc.
  • Variation of the heat transfer amount of the capacitor is reduced, and each of the plurality of capacitors is sandwiched by the plate member under substantially the same surface pressure condition, so that the thermal resistance at the interface with the plate member
  • the variation in heat transfer amount to the corresponding plate member of each of the plurality of capacitors is reduced, and the temperature variation of the plurality of capacitors can be reduced as compared with the background art.
  • the volume capacity density of the power storage module can be increased.
  • the capacity of the power storage device is increased. The operating performance can be improved.
  • (Embodiment 1) An exploded perspective view showing a configuration of a battery module.
  • Sectional drawing which shows the structure before accommodating the battery cell and heat insulating material of the housing
  • (Embodiment 1) Sectional drawing which shows the structure after accommodating a battery cell and a heat insulating material of the housing
  • (Embodiment 1) A cross section showing the structure of the housing of FIG. 2 after accommodating the battery cell and the heat insulating material, pressing and deforming the battery cell in the battery cell arrangement direction, and further fixing by the fixing member in the battery cell arrangement direction.
  • Figure. (Embodiment 1) The block diagram which shows the structure of the electric drive system of the two-wheeled motor vehicle provided with the battery apparatus comprised using the battery module of FIG. (Embodiment 2) Sectional drawing which shows the structure of a battery module.
  • a battery device In an electric motorcycle, a battery device is mounted as a traveling power source. For this reason, when the electric motorcycle is driven (powering), the electric energy charged in the battery device is discharged as DC power.
  • the DC power discharged from the battery device is converted into AC power by an inverter device (power conversion device) and then supplied to a motor generator (rotating electric machine).
  • the motor generator operates as a motor, and an electric power (rotational power) for driving the electric motorcycle is generated.
  • the electric force is transmitted to the wheels via a power transmission device. As a result, the electric motorcycle can travel.
  • Electric energy charged in the battery device decreases as the electric motorcycle travels. For this reason, when the electric motorcycle is in a regenerative state such as deceleration or braking, the motor generator is operated as a generator by the rotational power supplied from the vehicle side, and the battery device is charged. When the motor generator operates as a generator, AC power is generated. The generated AC power is converted into DC power by the inverter device, and then supplied to the battery device. Thereby, the battery apparatus can charge the electrical energy obtained by regenerative energy.
  • the electric motorcycle is equipped with a charger.
  • the battery device can be charged using the charger.
  • the charger can be electrically connected to a commercial power source, which is a household power source, or a desk lamp provided in an electric station or commercial facility via a harness (power supply cable).
  • a commercial power source which is a household power source, or a desk lamp provided in an electric station or commercial facility via a harness (power supply cable).
  • the charger controls the voltage of the input power. Is converted into predetermined DC power and supplied to the battery device.
  • the battery apparatus can charge the electrical energy obtained from the external power supply.
  • the battery device is also used as a drive power source for electrical components such as lights.
  • the electric motorcycle is provided with a power converter such as a DC-DC converter.
  • a power conversion device such as a DC-DC converter converts DC power discharged from the battery device into DC power having a predetermined voltage (steps up and down) and supplies it to electrical components.
  • electrical components such as a light
  • Other mobile units include passenger cars, railway vehicles such as hybrid trains, freight cars such as hybrid trucks, passenger cars such as hybrid buses, industrial vehicles such as construction machinery and forklift trucks, and electric welfare equipment.
  • an internal combustion engine and an electric motor are provided as a drive source (prime mover) of the vehicle, and a charger for charging AC power supplied from an external power source such as a commercial power source and a desk lamp to a battery device is provided.
  • the mounted plug-in hybrid electric vehicle includes an engine and an electric motor as a vehicle drive source, and does not have a charger for charging the battery device with AC power supplied from an external power source such as a commercial power source or a desk lamp (A hybrid electric vehicle that charges a battery device with electric power obtained by regeneration at the time of deceleration of the vehicle and / or electric power obtained from a generator driven by a prime mover, and does not have an engine as a driving source of the vehicle (electric power The electric motor generated is the only drive source for the vehicle) And the like pure electric vehicle equipped with a charger for charging the AC power supplied from an external power supply such as a battery unit.
  • an external power source such as a commercial power source or a desk lamp
  • a motor that generates electric power using a battery device as a power source also serves as a generator when power is generated from the moving body side
  • a battery device It is equipped with an inverter device that controls the power to and from the motor.
  • a generator that is driven by a prime mover to generate electric power is mounted on these moving bodies, and the battery device may be charged by the generator.
  • the configuration of the following embodiment can also be applied to a stationary battery device installed as an uninterruptible power source (backup power source) for communication equipment or the like.
  • the configuration of the following embodiment is arranged in a consumer, stores power at night, and releases the stored power during the day to level the power load, wind power generation system, solar power
  • the present invention can also be applied to a stationary battery device that is installed in a power generation farm together with a photovoltaic power generation system or the like and installed as a power storage system or the like that suppresses output fluctuations of the power generation system.
  • ⁇ Schematic configuration of battery device >> The configuration of the battery device varies depending on the output voltage and scale of the system, but basically includes one or a plurality of power storage modules in which a plurality of capacitors are stacked, depending on the electrochemical action and charge storage structure of the plurality of capacitors.
  • the plurality of capacitors are used by being electrically connected in series, in parallel, or in series-parallel according to specifications such as output voltage and storage capacity required for the system.
  • a lithium ion secondary battery is a battery that charges and discharges electric energy by an electrochemical reaction of a power generation (storage) element housed in a metal battery case together with an electrolyte (non-aqueous solvent).
  • a power generation element housed in a metal battery case together with an electrolyte (non-aqueous solvent).
  • electrolyte non-aqueous solvent
  • a lead secondary battery or a nickel hydride secondary battery may be used as a storage battery.
  • the capacitive passive element which charges / discharges electric energy with an electrostatic capacitance such as an electrical double layer capacitor and a lithium ion capacitor, as a capacitor
  • an electric motorcycle has a limited space for mounting a battery device than an automobile.
  • the battery device mounted on the electric motorcycle adopts a square or laminate type lithium ion secondary battery as the lithium ion secondary battery, and provides a plurality of prepared depending on the required output and capacity.
  • Mounting density is achieved by mechanically integrating prismatic or laminated lithium-ion secondary batteries, that is, by mounting them as a battery module stacked and secured in the thickness direction of prismatic or laminated lithium-ion secondary batteries. Has been made.
  • the electric motorcycle is required to extend the cruising distance per charge of the battery device, and a large-capacity battery device is required.
  • the battery device mounted on the electric motorcycle is required to be mounted in a limited and narrow vehicle space and to have a large capacity.
  • the battery module constituting the battery device may have a high volume capacity density.
  • the lithium ion secondary battery to be used undergoes a temperature change due to internal Joule heat and chemical reaction heat during charging and discharging, and the overdischarge potential and overcharge potential change. For this reason, when a plurality of lithium ion secondary batteries are in different temperature states, each of the plurality of lithium ion secondary batteries has a different overdischarge potential and overcharge potential. As a result, during charging, the amount of charge is limited by the lithium ion secondary battery having a low overcharge potential, and the lithium ion secondary battery having a higher overcharge potential than the lithium ion secondary battery stores a sufficient amount of power. I can't do that.
  • the discharge amount is limited by the lithium ion secondary battery having a high overdischarge potential, and power that is not output remains in the lithium ion secondary battery having an overdischarge potential lower than that of the lithium ion secondary battery. . That is, if the temperatures of the plurality of lithium ion secondary batteries are different, the absolute amount of power reserve of the battery device is reduced and the amount of power that can be extracted from the battery device is reduced.
  • the heat from each of the plurality of lithium ion secondary batteries is the same under the same conditions, that is, the same specifications (thickness, length, There is no variation in shape, thermal resistance, etc. (variation is close to zero). . Further, it is necessary that a plurality of lithium ion secondary batteries can exchange heat with each other.
  • the battery module is configured so that heat from each of the plurality of lithium ion secondary batteries is transmitted in a direction orthogonal to the stacking direction of the plurality of stacked lithium ion secondary batteries. It is possible to do.
  • a heat sink is interposed between the laminated lithium ion batteries, and the thermal resistance between the heat sink and the lithium ion secondary battery is reduced.
  • a plurality of lithium ion secondary batteries are housed in a casing, the plurality of lithium ion secondary batteries are arranged in the thickness direction of the lithium ion secondary battery, and the plurality of lithium ion secondary batteries are arranged.
  • the heat insulation layers are arranged on both sides of the lithium ion battery arrangement direction, and heat sinks are arranged on both sides of each lithium ion secondary battery arrangement direction of the plurality of lithium ion secondary batteries.
  • the abutting member of the provided casing is abutted against a member facing the lithium ion secondary battery arrangement direction, and thereby, the heat sink is operated to press the lithium ion secondary battery in the lithium ion secondary battery arrangement direction. And keep this state.
  • the heat of the lithium ion secondary batteries arranged at both ends in the lithium ion secondary battery arrangement direction is less likely to flow in the lithium ion secondary battery arrangement direction by the above solution.
  • the heat of the lithium ion secondary battery that flows in the direction perpendicular to the direction of the lithium ion secondary battery arrangement and is arranged at both ends of the lithium ion secondary battery arrangement direction
  • the amount of heat transfer from the lithium ion secondary battery is suppressed, and the heat transfer amount of the lithium ion secondary battery arranged at both ends of the lithium ion secondary battery arrangement direction and the other lithium ion secondary battery
  • the variation in the heat transfer amount of the battery is reduced, and each of the plurality of lithium ion secondary batteries is sandwiched by the heat sink under substantially the same surface pressure condition. Variation in thermal resistance at the interface with the plate is reduced, variation in heat transfer amount to the corresponding heat sink of each of the plurality of lithium ion
  • a plurality of abutting members are each formed integrally with a corresponding heat sink, or a plurality of abutting members are formed separately from the corresponding heat sink, In the arrangement direction of the lithium ion secondary battery, it is in contact with the corresponding heat sink and is in pressure contact with the corresponding heat sink.
  • the plurality of butting members are connected to the other butting members that are closest to each other in the lithium ion secondary battery arrangement direction via flexible members, and the plurality of flexible members are respectively connected. It forms integrally with the butt member to connect.
  • Embodiment 1 1st Embodiment is described based on FIG. 1 thru
  • FIG. 8 shows the configuration of the drive system of the electric motorcycle 1000 and the electrical connection configuration of each component of the electric drive device constituting a part thereof.
  • a drive system 1000 for an electric motorcycle incorporates a motor generator 1200 in an inner peripheral portion (wheel portion) of the drive wheel 1001 and directly transmits the rotational power of the motor generator 1200 to the drive wheel 1001 to drive the drive wheel 1001.
  • the drive system adopts a so-called in-wheel system.
  • Drive wheels 1001 are wheels on the rear side of the vehicle body.
  • the outer periphery of motor generator 1200 is fitted into the inner periphery of drive wheel 1001.
  • the drive wheel 1001 may be a wheel on the front side of the vehicle body.
  • a drive system 1000 for an electric motorcycle a drive system that employs a method of driving the drive wheels by transmitting the rotational power of the motor generator 1200 to the axle of the drive wheels via a power transmission member such as a chain, Drive that adopts a system that directly connects the wheel axle and the rotation axis of the motor generator juxtaposed to the drive wheel so that the rotation power of the motor generator is transmitted to the drive wheel and drives the drive wheel A system may be used.
  • the motor generator 1200 is arranged to face an armature (stator) 1210 provided with an armature winding 1211 and a plurality of permanent magnets 1221 for generating a field magnetic flux that are disposed on the outer peripheral side of the armature 1210 via a gap.
  • An outer rotor type rotating electrical machine (permanent magnet field type three-phase AC synchronous machine) having a field (rotor) 1220 provided with a motor, which functions as a motor during running of an electric motorcycle and as a generator during regeneration of the electric motorcycle. Function.
  • the motor generator 1200 includes a wound field type three-phase AC synchronous machine (with a field core having a field winding mounted on the field core) or a three-phase AC induction machine (short-circuited to the field core). It is also possible to use a field magnet equipped with a plurality of conductor bars.
  • ⁇ Configuration of inverter device> The drive of motor generator 1200 is controlled by controlling the power between armature 1210 and battery device 1100 by inverter device 1300. That is, inverter device 1300 is a control device for motor generator 1200.
  • the inverter device 1300 is a power conversion device that converts electric power from DC to AC and from AC to DC by a switching operation of the switching semiconductor element, and includes a power module 1310 that constitutes a main circuit of power conversion.
  • a power module 1310 In the power module 1310, two switching semiconductor elements (upper arm and lower arm) are electrically connected in series, and a series circuit (an arm for one phase) is electrically connected in parallel for three phases (three-phase bridge).
  • six switching semiconductor elements are mounted on a substrate and electrically connected by a connection conductor such as an aluminum wire so that a power conversion circuit is configured.
  • MOSFET metal oxide semiconductor field effect transistor
  • IGBT insulated gate bipolar transistor
  • the side opposite to the lower arm connection side of each upper arm (in the case of IGBT, the collector electrode side) is led out from the DC side of the power module 1310 and is electrically connected to the positive side of the battery device 1100.
  • the side opposite to the upper arm connection side of each lower arm (emitter electrode side in the case of IGBT) is led out from the DC side of the power module 1310 and is electrically connected to the negative side of the battery device 1100.
  • each arm that is, the connection point between the lower arm connection side of the upper arm (in the case of IGBT, the emitter electrode side of the upper arm) and the upper arm connection side of the lower arm (in the case of IGBT, the collector electrode side of the lower arm) Is led out from the AC side of the power module 1310 and is electrically connected to the corresponding phase winding of the armature winding 1211.
  • the switching semiconductor element mounted on the power module 1310 is driven by the drive signal output from the drive circuit 1330.
  • the drive circuit 1330 generates a drive signal for each switching semiconductor element based on the switching command signal output from the motor control device 1340, and supplies the drive signal to each switching semiconductor element.
  • the motor control device 1340 generates a switching command signal for each switching semiconductor element based on the motor torque command signal output from the vehicle control device 1002, and outputs the switching command signal to the drive circuit 1330.
  • An electrolytic capacitor 1320 is electrically connected in parallel to the DC side of the power module 1310.
  • the electrolytic capacitor 1320 is provided as a smoothing capacitor that suppresses voltage fluctuation caused by the high-speed switching operation of the switching semiconductor element.
  • the vehicle control device 1002 generates a motor torque command signal for the motor control device 1340 based on a plurality of state parameters indicating the driving state of the vehicle, such as a torque request from the driver, a vehicle speed, and the like. It is output to the motor control device 1340.
  • the battery device 1100 is a power storage device that is electrically connected to the inverter device 1300 and the charger 1500 via the junction box 1400, and charging / discharging is controlled by the inverter device 1300 and charging is controlled by the charger 1500.
  • a battery module 1110 and a control device are provided, and a power supply for driving the motor generator 1200 that can output a voltage of about 100 volts at the maximum is configured.
  • the battery module 1110 and the control device are installed together with the inverter device 1300 and the charger 1500 under the seat or between the rear wheel and the front wheel (steering).
  • the battery module 1110 integrates a plurality of lithium ion secondary battery cells 30 (hereinafter simply referred to as “battery cells 30”) capable of storing and releasing electrical energy (charging and discharging DC power) and electrically It is a connected aggregate structure and is also called an assembled battery or a battery pack.
  • 96 battery cells 30 are provided.
  • the battery cell 30 is the smallest structural unit in the battery module 1110 and is also called a single battery.
  • the nominal output voltage of the battery cell 30 is 3.0 to 4.2 volts (the average nominal output voltage is 3.6 volts).
  • the battery module 1110 is configured by electrically connecting four sets of connection bodies in which 24 battery cells 30 are electrically connected in series, in parallel. Specifically, as will be described later with reference to FIGS. 1 to 7, six battery cells 30 are secured by a casing 101, and the battery module is a unit having a smaller number of battery cells 30 than the battery module 1110. 16 100 are configured, 4 battery modules 100 are electrically connected in series, 4 battery modules 100 are electrically connected in series, and 4 sets of connected bodies are electrically connected in parallel. is doing. That is, the battery module 1110 is configured by electrically connecting the 16 battery modules 100 so that they are in 4 series and 4 parallel.
  • the battery module 1110 and the battery module 100 of the unit with the number of battery cells 30 smaller than this are distinguished with the code
  • the battery module 1110 is provided with a temperature sensor for measuring the temperature of the battery cell 30 and / or the battery module 100 selected in advance. Measurement information from the temperature sensor is input to the control device and used for management and control of the battery module 1110.
  • the control device is an electronic control device that includes a plurality of electronic circuit components and manages and controls the state of the battery module 1110.
  • control device 1130 corresponds to the upper (parent) in the battery device 1100 and corresponds to the lower (child) of the battery control device 1130.
  • Cell control device 1120 corresponds to the upper (parent) in the battery device 1100 and corresponds to the lower (child) of the battery control device 1130.
  • the battery control device 1130 and the cell control device 1120 are connected by a communication circuit so that electrical signals can be exchanged between them.
  • the battery control device 1130 and the cell control device 1120 have different operating power supplies and different reference potentials. That is, the cell control device 1120 uses the battery module 1110 that is in a floating state with respect to the ground as a power source, whereas the battery control device 1130 uses the grounded auxiliary power source (for example, a 14-volt system power source) as a power source. .
  • an insulating element 1140 is provided in the middle of the communication line (signal transmission path) between the battery control device 1130 and the cell control device 1120, and the communication line (signal transmission path) on one side of the insulating element 1140 and the insulating element 1140 are provided. Is electrically insulated from the other communication line (signal transmission line).
  • signal transmission can be performed between the battery control device 1130 and the cell control device 1120 using electrical signals having different reference potentials.
  • a photocoupler is used as the insulating element 1140.
  • the photocoupler is an optical element that includes a light emitting unit and a light receiving unit, converts an electrical signal into an optical signal at the light emitting unit and transmits the optical signal to the light receiving unit, and converts the optical signal into an electrical signal at the light receiving unit and outputs the signal.
  • the cell control device 1120 operates as a limb of the battery control device 1130 based on a command signal output from the battery control device 1130, and manages and controls each state of each battery cell 30.
  • a circuit hereinafter referred to as “cell-con IC (Integrated Circuit)” is provided.
  • a plurality of cell controller ICs are provided corresponding to each battery module 100, and are mounted on a circuit board together with other components such as a circuit element for noise removal or protection or an insulating element 1140, and the corresponding battery module. 100.
  • 16 cell capacitor ICs are provided corresponding to the number of battery modules 100.
  • Each cell control IC detects the voltage of each battery cell 30 constituting the corresponding battery module 100 and transmits the voltage value to the battery control device 1130 as a signal.
  • each cell controller IC needs to be adjusted in the charge state among the battery cells 30 constituting the corresponding battery module 100 based on the command signal related to the adjustment of the charge state transmitted from the battery control device 1130.
  • a correspondingly provided bypass circuit is operated to adjust the charge state of the battery cell 30 that needs to be charged.
  • the bypass circuit is a series circuit in which a discharge resistor externally attached to the cellcon IC and a switching semiconductor element incorporated in the cellcon IC or externally connected are electrically connected in series.
  • the switching semiconductor element When the switching semiconductor element is turned on correspondingly, the discharge resistor is electrically connected to the battery cell 30 to discharge the battery cell 30.
  • each cell controller IC includes an abnormality diagnosis circuit, and diagnoses an abnormality of the battery cell 30 and an abnormality of an internal circuit of the cell controller IC.
  • the abnormality diagnosis of the battery cell 30 compares the voltage of the battery cell 30 measured by voltage detection with the overdischarge threshold value and the overcharge threshold value. If the terminal voltage falls below the overdischarge threshold value, the overdischarge and the terminal voltage are When the overcharge threshold is exceeded, it is diagnosed as overcharge.
  • the abnormality diagnosis of the internal circuit of the cell controller IC is performed based on whether the voltage detection circuit of the battery cell 30 is abnormal, whether the switching semiconductor element constituting the bypass circuit is abnormal, the internal temperature of the cell controller IC is equal to or higher than the allowable temperature. It is diagnosed whether or not.
  • the battery control device 1130 includes a microcontroller that is an arithmetic processing device, a voltage sensor that measures an input / output voltage of the battery module 1110, a current sensor that measures an input / output current of the battery module 1110, and the like.
  • the microcontroller inputs a plurality of information including information transmitted from the cell control device 1120 (voltage values of each battery cell 30), measurement information input from a plurality of sensors including a voltage sensor, a current sensor, and a temperature sensor. Then, based on the plurality of pieces of information including the characteristic information of the battery cells 30 stored in advance in the storage device and the plurality of pieces of information including the input information, the state of the battery module 1110 (for example, the state of charge of the battery module 1110 “hereinafter referred to as SOC (Referred to as “State) Of ⁇ Charge”) and deterioration state “hereinafter referred to as SOH (State Of Health)”, calculations for adjusting the SOC of the battery module 1110, and charging / discharging of the battery module 1110.
  • SOC State of charge of the battery module 1110
  • SOH SOH
  • a plurality of calculations including a calculation for controlling are executed, and based on the result of these calculations, the cell controller 1120
  • a plurality of signals including a command signal for the battery module, a signal related to an allowable charge / discharge amount for controlling charge / discharge of the battery module 1110, a signal related to the SOC of the battery module 1110, and a signal related to the SOH of the battery module 1110 are generated and output. Yes.
  • a signal related to the allowable charge / discharge amount (allowable charge / discharge current or allowable charge / discharge power), a signal related to the SOC, and a signal related to the SOH are signals to the vehicle control device 1002 or the motor control device 1340. Is transmitted.
  • the signal regarding the allowable charge / discharge amount is that the battery device 1100 is charged / discharged within the range of the allowable charge / discharge amount, and the three-phase AC power based on the torque command signal output from the vehicle control device 1002 is supplied from the power module 1310 to the motor generator 1200.
  • the three-phase AC power output from the motor generator 1200 is converted into DC power by the power module 1310 based on the torque command signal output from the vehicle control device 1002 and is supplied to the battery device 1100. As supplied, it is input to the motor controller 1340.
  • the motor control device 1340 sends a switching command to the drive circuit 1330 so that on / off of the switching semiconductor element of the power module 1310 is controlled based on the signal related to the allowable charge / discharge amount and the torque command signal output from the vehicle control device 1002. Output a signal.
  • the command signal transmitted from the microcontroller to the cell control device 1120 is a signal for adjusting the charging state of each battery cell 30, and is supplied to the cell controller IC corresponding to the battery cell 30 to be charged. Signal transmission.
  • the command signal transmitted from the microcontroller to the cell control device 1120 includes a signal for requesting the voltage value of each battery cell 30 constituting each sub battery module 100, and causes each cell controller IC to perform abnormality diagnosis. There are a plurality of signals including a signal for requesting an abnormality diagnosis result performed in each cell controller IC, a signal for wake-up of each cell controller IC, and a signal for causing each cell controller IC to sleep.
  • the microcontroller includes an abnormality diagnosis circuit, and a connection for electrically connecting the cell controller IC and the battery cell 30 based on an abnormality in an internal circuit of the macro controller or information (for example, voltage value) transmitted from the cell control device 1120. Diagnosing wire breakage.
  • the battery control device 1130 includes a leak detection device, and any part of the high-voltage system including the battery module 1110 up to the inverter device 1130 is grounded to diagnose whether current is leaking from the battery module 1110.
  • ⁇ Charger configuration The battery device 1100 can be charged from a commercial power source 1560 at home or a power supply device of a desk lamp via a charger 1500 mounted on the electric motorcycle.
  • the power plug 1550 at the tip of the power cable electrically connected to the external power connection terminal of the charger 1500 is inserted into the outlet 1570 on the commercial power source 1560 side, or the power cable extending from the power supply device of the desk lamp is connected to the charger.
  • the charger 1500 is electrically connected to the commercial power source 1560 or the power supply device of the desk lamp.
  • single-phase or three-phase AC power is supplied to the charger 1500 from the commercial power source 1560 or the power supply device of the desk lamp.
  • the charger 1500 converts the supplied AC power into DC power, adjusts the charging voltage of the battery device 1100, and then supplies the battery device 1100. Thereby, the battery device 1100 can be charged.
  • the household commercial power source 1560 and the charger 1500 are electrically connected to charge the battery device 1100 will be described as an example.
  • charging from the power supply device of the desk lamp is also basic. Specifically, charging is performed in the same manner as charging from a commercial power source 1560 at home.
  • the current capacity and charging time supplied to the charger 1500 are different between charging from the commercial power source 1560 at home and charging from the power supply device of the desk lamp, and charging from the power supply device of the desk lamp is more
  • the current capacity is larger than the charging from the commercial power source 1560 and the charging time is fast, that is, rapid charging is possible.
  • Charger 1500 converts AC power supplied from home commercial power supply 1560 into DC power, and boosts the converted DC power to a charging voltage of battery device 1100 and supplies the converted voltage to battery device 1100.
  • the AC / DC converter circuit 1510, the booster circuit 1520, the drive circuit 1530, and the charge control device 1540 are provided as main components.
  • the AC / DC conversion circuit 1510 is a power conversion circuit that converts AC power supplied from an external power source into DC power and outputs the DC power.
  • the AC / DC conversion circuit 1510 includes, for example, a bridge connection of a plurality of diode elements, and converts AC power supplied from an external power source.
  • a rectifier circuit provided for rectifying to DC power and a power factor correction circuit electrically connected to the DC side of the rectifier circuit and provided to improve the power factor of the output of the rectifier circuit are provided.
  • a circuit for converting AC power into DC power a circuit configured by bridge connection of a plurality of switching semiconductor elements in which diode elements are connected in antiparallel may be used.
  • the step-up circuit 1520 is a power conversion circuit for stepping up DC power output from the AC / DC conversion circuit 1510 (power factor correction circuit) to the charging voltage of the battery device 1100, and is composed of, for example, an insulation type DC-DC converter. ing.
  • the insulation type DC-DC converter is electrically connected to a transformer and a primary winding of the transformer, and is constituted by a bridge connection of a plurality of switching semiconductor elements.
  • the DC power output from the AC / DC conversion circuit 510 is Is converted to AC power and input to the primary winding of the transformer, and is electrically connected to the secondary winding of the transformer and is constituted by a bridge connection of a plurality of diode elements.
  • a rectifier circuit that rectifies AC power generated in the secondary winding of the DC coil into DC power, a smoothing reactor electrically connected in series to the positive side of the output side (DC side) of the rectifier circuit, and the output side of the rectifier circuit ( It is composed of a smoothing capacitor electrically connected in parallel between the positive and negative electrodes on the DC side).
  • the charging control device 1540 is output from the vehicle control device 1002 in order to control the power, voltage, current, and the like supplied from the charger 1500 to the battery device 1100 during charging and the charging of the battery device 1100 by the charger 1500.
  • the switching command signal (for example, PWM (pulse width modulation) signal) for the plurality of switching semiconductor elements of the booster circuit 1520 is generated and output to the driving circuit 1530.
  • An electronic circuit device which is configured by mounting a plurality of electronic components including an arithmetic processing device such as a microcomputer on a circuit board.
  • the charging control device 1540 receives the command signal output from the vehicle control device 1002, and controls the operation of the charger 1500.
  • the command signal output from the vehicle control device 1002 includes a command signal for starting charging and a command signal for ending charging.
  • the command signal for starting charging monitors the voltage on the input side of the charger 1500, and both the charger 1500 and the external power source are electrically connected to apply a voltage to the input side of the charger 1500 to charge the battery. This is output when it is determined that the start state has been reached.
  • the command signal for ending charging is output when it is determined that battery device 1100 is fully charged based on the signal output from battery control device 1 130.
  • the signal output from the battery control device 1130 is the allowable charge amount of the battery module 1110 calculated by the battery control device 1130.
  • a command signal for starting charging and a command signal for ending charging are output from the vehicle control device 8 is described as an example.
  • the motor control device 1340 or the battery device 1100 is described. May be output.
  • the charging control device 1540 may make the same determination as the vehicle control device 1002 in cooperation with the control device of the battery device 1100 to control the start and end of charging.
  • the drive circuit 1530 receives the torque command signal output from the charge control device 1540, generates drive signals for the plurality of switching semiconductor elements of the booster circuit 1520, and outputs the drive signals to the gate electrodes of the plurality of switching semiconductor elements. And a plurality of electronic components such as switching semiconductor elements and amplifiers are mounted on a circuit board.
  • the junction box 1410 houses first and second positive side relays 1410 and 1430 and first and second negative side relays 1420 and 1440.
  • the first positive side relay 1410 is a switch for controlling electrical connection between the DC positive side of the power module 1310 and the positive side of the battery module 1110.
  • the first negative side relay 1420 is a switch for controlling electrical connection between the DC negative side of the power module 1310 and the negative side of the battery module 1110.
  • Second positive relay 1430 is a switch for controlling electrical connection between the DC positive side of booster circuit 1520 and the positive side of battery module 1110.
  • the second negative side relay 1440 is a switch for controlling electrical connection between the DC negative side of the booster circuit 1500 and the negative side of the battery module 1110.
  • the first positive side relay 1410 and the first negative side relay 1420 are turned on when power is transferred between the battery device 1100 and the motor generator 1200, and when the ignition key switch of the electric motorcycle is opened, the drive system It is opened when an abnormality occurs and when the battery device 1100 is charged by the charger 1500.
  • the second positive side relay 1430 and the second negative side relay 1440 are turned on when the battery device 1100 is charged by the charger 1500, and when the charging of the battery device 1100 by the charger 1500 is completed, the charger 1500 or the battery device. Opened when an error occurs in 1100.
  • Opening / closing of the first positive side relay 1410 and the first negative side relay 1420 is controlled by an open / close command signal output from the vehicle control device 1002.
  • the opening and closing of the first positive electrode side relay 1410 and the first negative electrode side relay 1420 may be controlled by another control device such as the motor control device 1340 or the battery control device 1130.
  • Opening / closing of the second positive relay 1430 and the second negative relay 1440 is controlled by an open / close command signal output from the charge control device 1540.
  • the opening and closing of the second positive side relay 1430 and the second negative side relay 1440 may be controlled by another control device, for example, the vehicle control device 1002 or the battery control device 1130.
  • the electric motorcycle is provided with auxiliary equipment such as a lighting device.
  • auxiliary equipment such as a lighting device.
  • an auxiliary machine provided in a motorcycle is driven by DC power output from a low voltage battery device having a nominal output voltage of 12 volts.
  • the battery device 1100 is mounted, and it is difficult to secure a mounting space for the low voltage battery device separately from the battery device 1100. For this reason, in the electric motorcycle, the battery device 1100 is used as an operation power source of the auxiliary machine.
  • a DC-DC converter which is a power converter for converting DC power into DC power that has been stepped up and down to a predetermined voltage, is electrically connected, and the high voltage supplied from the battery device 1100 by the DC-DC converter Voltage direct current power is stepped down to low voltage direct current power, and the converted direct current power is supplied to an auxiliary machine to operate the auxiliary machine.
  • motor generator 1200 functions as a motor, that is, when the electric motorcycle travels, the electric energy stored in battery device 1100 is supplied to armature winding 1211 via inverter device 1300.
  • motor generator 1200 generates rotational power (mechanical energy) by a magnetic action between armature 1210 and field 1220.
  • the rotational power generated by the motor generator 1200 is directly transmitted to the drive wheels 1001 to drive the drive wheels 1001. As a result, the electric motorcycle can travel with electric power.
  • motor generator 200 When motor generator 200 functions as a generator, that is, during regeneration of an electric motorcycle, mechanical energy (rotational power) transmitted from drive wheels 1001 is transmitted to motor generator 1200, and motor generator 1200 is driven. Thus, when motor generator 1200 is driven, a voltage is induced in armature winding 1211 by the magnetic action between armature 1210 and field 1220. Thus, motor generator 1200 generates three-phase AC power. The three-phase AC power generated by the motor generator 1200 is converted into DC power by the inverter device 1300 and then supplied to the battery device 1100. Thereby, the battery device 1100 can be charged. ⁇ Detailed configuration of battery module> Next, the configuration of the battery module 100 will be described in detail with reference to FIGS. 1 to 7.
  • FIG. 1 shows a configuration of the battery module 100.
  • 2 and 4 show the configuration of the casing 101 that constitutes the battery module 100.
  • FIG. 3 shows an external configuration of the battery cell 30 housed in the casing 101 and secured.
  • FIG. 5 shows a configuration of the battery module 100 after the battery cell 30 and the heat insulating plate 40 are accommodated in the housing 101 and before the housing 101 is pressed and deformed in the battery cell arrangement direction.
  • FIG. 6 shows a configuration of the battery module 100 after the battery cell 30 and the heat insulating plate 40 are accommodated in the housing 101 and the housing 101 is pressed and deformed in the battery cell arrangement direction.
  • FIG. 5 shows a configuration of the battery module 100 after the battery cell 30 and the heat insulating plate 40 are accommodated in the housing 101 and the housing 101 is pressed and deformed in the battery cell arrangement direction.
  • the battery cell 30 and the heat insulating plate 40 are accommodated in the housing 101, and the housing 101 is pressed and deformed in the battery cell arrangement direction, and the housing 101 is fixed by the fixing member 201 in the battery cell arrangement direction.
  • the structure of the battery module after having been shown is shown. ⁇ Overall structure of battery module> As shown in FIG. 1, the battery module 100 includes a housing 101, six battery cells 30, two heat insulating plates 40, four fixing members 201, and eight bolts as main components. 202 and caps 220 and 221.
  • the casing 101 is a structure manufactured from a metal member made of an A6000 series (magnesium-silicon series) aluminum alloy by an extrusion process, which will be described later, and the outer shape has a substantially rectangular parallelepiped shape. It is a hexahedron.
  • a rectangular surface having the largest area among the six surfaces constituting the housing 101 is referred to as a main surface, and a direction in which the two main surfaces are opposed is defined as a height direction.
  • the direction in which the long sides of the rectangular main surface extend in parallel is the longitudinal direction
  • the direction in which the short sides extend in parallel is the short direction.
  • the surfaces that are arranged on both sides in the short direction of the main surface and that are orthogonal to the long side of the main surface are called side surfaces, and the direction in which the two side surfaces oppose each other is the short direction (the short direction of the main surface). The same direction).
  • the portions that are arranged on both sides of the main surface in the longitudinal direction and that correspond to the surface orthogonal to the short side of the main surface are referred to as open end portions, and the direction in which the two open end portions face each other is the longitudinal direction. (The same direction as the longitudinal direction of the main surface).
  • the height dimension of the casing 101 is the height dimension
  • the longitudinal dimension of the casing 101 is the depth dimension
  • the casing 101 is short.
  • Each dimension in the hand direction is defined as a width dimension.
  • the casing 101 includes, as components, one end plate (upper plate or top plate) 105 disposed at one end portion in the height direction and one end disposed at the other end portion in the height direction.
  • a plate (lower plate or bottom plate) 106 seven heat radiating plates (intermediate plates) 104 disposed between the end plates 105, 106, and end plates 105, 106 and the heat radiating plate 104
  • Those components of the housing 101 are integrally formed.
  • the cross-sectional shape of the casing 101 in the longitudinal direction is uniform from one end portion in the longitudinal direction to the other end portion.
  • the end plates 105 and 106 and the heat radiating plate 104 are rectangular flat plates and are arranged so as to be stacked at intervals in the height direction.
  • the respective planes of the end plates 105 and 106 and the heat radiating plate 104 face the height direction.
  • the end plate 105 is a plate-like member corresponding to one (upper surface) side of the main surface of the casing 101.
  • the end plate 106 is a plate-like member corresponding to the other (lower surface) side of the main surface of the housing 101, and is in a height direction with respect to the end plate 105 (a direction facing a plane on one side of the end plate 105). It is arranged so as to be spaced.
  • the heat radiating plate 104 is a plate-like member having a thickness smaller than that of the end plates 105 and 106, and is spaced in the height direction with respect to the end plates 105 and 106 in the height direction (one of the end plates 105 and 106). Between the end plates 105 and 106 so as to be arranged at equal intervals in a direction from the other side to the other side, or in a direction in which one plane of the end plate 105 and the other plane of the end plate 106 face each other. It is arranged in the space.
  • the abutting members 210 and 211 are solid members having an elongated rectangular bar shape with a rectangular cross-sectional shape in the longitudinal direction, and extend in the height direction from the surface of the edge of both end portions of the end plates 105 and 106 and the heat radiating plate 104 in the short direction.
  • the end plate 105 extends so as to protrude and continuously extend from one end portion in the longitudinal direction to the other end portion along the edges of both end portions in the short direction of the end plates 105 and 106 and the heat radiating plate 104.
  • 106 and the heat radiating plate 104 are formed at the edges of both ends in the short direction.
  • the length of the side in the short direction is longer than the length of the side in the height direction.
  • the length of the side in the height direction is longer than the length of the side in the short direction.
  • the abutting member 210 has edges on both sides in the short direction in the plane of one side of the end plate 105 (opposite side to the heat sink 104), the other side of the heat sink 104 facing the end plate 105 (with the end plate 105).
  • the edges of both ends in the short direction on the plane on the opposite side, the edges on both ends in the short direction on the other side of the end plate 106 (on the side facing the heat radiating plate 104), and the heat radiation facing the end plate 106 It is provided at the edge of both ends in the lateral direction on the plane of one side of the plate 104 (opposite side to the end plate 106).
  • the abutting member 211 is a heat radiating plate facing the end plate 106, the edge of both ends in the short direction in the plane of one side of the heat radiating plate 104 facing the end plate 105 (opposite the side facing the end plate 105).
  • the edge of both sides in the short direction in the plane on the other side of 104 (the side opposite to the end plate 106), and the edge of both ends in the short side in both planes of the remaining five heat sinks 104 Is provided.
  • Each of the abutting members 210 has a protruding end surface in the height direction as the abutting surface, and the other same shape adjacent in the height direction so as to abut the abutting surface of the other same shape of the abutting member 210 adjacent in the height direction. It faces the abutting member 210 via the gap h1.
  • Each of the abutting members 211 has another same shape adjacent in the height direction so that the protruding end surface in the height direction is the abutting surface and abuts with the abutting surface of the other abutting member 211 of the same shape adjacent in the height direction. It faces the abutting member 211 via the gap h2.
  • the gap h2 is larger than the gap h1.
  • the size of the gap is determined by how much the pressing force of the battery cell 30 and the heat insulating plate 40 is set. In other words, the pressing force of the battery cell 30 and the heat insulating plate 40 can be controlled by the size of the gap, such that the larger the gap is, the larger the pressing force of the battery cell 30 and the heat insulating plate 40 is.
  • the flexible member w1 is a connecting member that connects the abutting members 210 that abut against each other in the height direction.
  • the flexible member w2 is a connecting member that connects the abutting members 211 that abut against each other in the height direction.
  • the flexible members w1 and w2 curve outward (on the opposite side to the abutting members 210 and 211 side), and continue from the one end in the longitudinal direction to the other end along the abutting members 210 and 211.
  • a space region surrounded by the end plates 105 and 106 that are elements constituting the main surface of the casing 101 and the abutting members 210 and 2111 and flexible members w1 and w2 that are elements that constitute the side surfaces of the casing 101 is
  • the seven heat sinks 104 are partitioned and divided into eight space regions in the height direction.
  • the eight spatial regions are open at both ends in the longitudinal direction, and are hollow portions penetrating from one end portion in the longitudinal direction to the other end portion.
  • two space regions arranged at both ends in the height direction are configured as a heat insulating plate accommodation portion 103 in which the heat insulation plate 40 is accommodated.
  • the remaining six space regions are configured as battery cell accommodating portions 102 in which the battery cells 30 are accommodated.
  • the dimensions of the battery cell accommodating portion 102 and the heat insulating plate accommodating portion 103 are determined in consideration of the dimensions of the heat insulating plate 40 and the battery cell 30 accommodated therein.
  • the battery cell housing portion 102 has the same depth as the heat insulating plate housing portion 103, but the width and height are larger than those of the heat insulating plate housing portion 103.
  • the height dimension of the battery cell accommodating part 102 and the heat insulation accommodating part 103 is from the thickness of the battery cell 30 accommodated in each, and the heat insulation board 40. Designed to be large.
  • a battery cell 30 is inserted into the battery cell housing portion 102 of the housing 101 from the opening at one end in the longitudinal direction toward the other side in the longitudinal direction.
  • the battery cell 30 is a lithium ion secondary battery that is generally referred to as a laminate type, and includes an exterior body 33 having a rectangular main surface on the front and back sides (thickness direction) in plan view.
  • the positive electrode terminal 31 and the negative electrode terminal 32 are drawn out from one side of the outer package 33 (one of the two opposing short sides).
  • the direction in which the two main surfaces of the battery cell 30 are opposed to each other is the thickness direction
  • the direction in which the long sides of the rectangular main surface extend in parallel is the longitudinal direction
  • the short side Are defined in parallel as the short direction.
  • the thickness direction of the battery cell 30 and the height direction of the housing 101, the longitudinal direction of the battery cell 30 and the longitudinal direction of the housing 101, The short direction and the short direction of the housing 101 are the same.
  • the outer package 33 of the laminate-type battery cell 30 has a flat shape in which the dimension in the thickness direction is smaller than the dimension in the longitudinal direction and the short direction.
  • the battery cell 30 When the battery cell 30 is inserted and accommodated in the battery cell accommodating portion 102, the battery cell 30 is in a state in which the main surface of the exterior body 33 when viewed from above is in a direction facing the heat sink 104 in the height direction. Is inserted and stored in the battery cell storage portion 102 from one side in the longitudinal direction.
  • One of the main surfaces (back surface) when the exterior body 33 is viewed in plan is a rectangular flat surface, and is in surface contact with the heat radiating plate 104 over the entire surface of the flat surface.
  • the other (surface) of the main surface when the exterior body 33 is viewed in plan is an edge of a planar annular shape having a rectangular outer ring edge and a rectangular inner ring edge, and an inner ring edge of the edge. It is an inner region, and has a shape with a substantially rectangular parallelepiped protrusion protruding outward from the edge (opposite side of the main surface), and a rectangular protruding end plane of the protruding portion
  • the heat sink 104 is in surface contact with the entire surface.
  • the width dimension and the depth dimension of the battery cell accommodating part 102 are determined by the length of the short side direction and the longitudinal direction of one (back surface) of the main surface when the exterior body 33 is viewed in plan.
  • a laminated electrode body in which a plurality of sheet-like positive electrodes and a plurality of sheet-like negative electrodes are laminated via separators is built into the exterior body 33 (projections), and is infiltrated with an electrolyte solution.
  • the exterior body 33 is composed of a laminate film having a heat-sealing resin layer on the inner surface of the battery 30.
  • the laminate film is configured by laminating an exterior resin layer, a metal layer, and a heat-sealing resin layer in order from the outside of the battery.
  • the laminate film is folded into two upper and lower sides on the opposite side of the side where the positive electrode terminal 31 and the negative electrode terminal 32 of the battery are formed, and the upper and lower heat-sealing resin layers are heat-sealed and integrated.
  • the inside of 33 is sealed.
  • the exterior resin layer is made of polyester (PE) and has a thickness of 50 ⁇ m.
  • the metal layer is made of an aluminum alloy and has a thickness of 100 ⁇ m.
  • a modified polyolefin film is used for the heat-sealing resin layer, and the thickness is 50 ⁇ m.
  • a vent part (not shown) is formed in a part of the heat seal part so as to have a lower strength than the other part. In the vent part, when the internal pressure of the battery rises abnormally, it is destroyed before the other parts and the internal pressure is released.
  • a layer (positive electrode mixture layer) made of a positive electrode mixture containing a positive electrode active material, a conductive additive mainly composed of a carbon material, and a binder is formed on the surface of the positive electrode current collector.
  • An aluminum alloy foil having a thickness of 0.015 mm is used for the positive electrode current collector.
  • the positive electrode mixture layer is a mixture of LiCoO 2 that is a positive electrode active material, acetylene black that is a conductive auxiliary agent, PVDF that is a binder, and the like, and the thickness per side is made in a range of 30 to 100 ⁇ m.
  • a layer (negative electrode mixture layer) made of a negative electrode mixture containing a negative electrode active material, a conductive additive, a binder and the like is formed on the surface of the negative electrode current collector.
  • a copper alloy having a thickness of 0.01 mm is used for the negative electrode current collector.
  • the negative electrode mixture layer is made of a composition such as graphite as a negative electrode active material and styrene butadiene rubber (SBR) or carboxymethyl cellulose (CMC) as a binder, and has a thickness per side of 30 to 100 ⁇ m. .
  • SBR styrene butadiene rubber
  • CMC carboxymethyl cellulose
  • a polyolefin microporous film having a thickness of 25 ⁇ m and a porosity of 30 to 70% is used.
  • a solution nonaqueous electrolytic solution in which a solute such as LiPF 6 is dissolved in an organic solvent mainly composed of ethylene carbonate (EC) is used.
  • EC ethylene carbonate
  • Each of the positive electrode terminal 31 and the negative electrode terminal 32 has a flat plate shape, and is connected to a plurality of sheet-like positive electrodes and sheet-like negative electrodes inside the outer package 33.
  • the positive electrode terminal is made of an aluminum alloy with a thickness of 0.2 mm.
  • a copper alloy surface having a thickness of 0.15 mm and nickel-plated is used.
  • the battery cells 30 inserted and accommodated in the battery cell accommodating portion 102 of the housing 101 are electrically connected in series. For this reason, when the battery cell 30 is inserted into the battery cell housing portion 102 of the housing 101, the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 are gathered on one side in the longitudinal direction of the housing 101, The battery cell 30 is inserted and housed in the battery cell housing portion 102 so as to protrude from one end portion in the longitudinal direction of 101.
  • one positive electrode terminal 31 or negative electrode terminal 32 of the battery cell 30 adjacent in the height direction and the other negative electrode terminal 32 or positive electrode terminal 31 face each other in the height direction so that the facing terminals can be directly connected to each other.
  • the orientation of the main surface when viewed in plan of the other exterior body 33 with respect to one of the battery cells 30 adjacent in the height direction is reversed 180 ° with the central axis extending in the longitudinal direction as the rotation axis.
  • the battery cell 30 is inserted and accommodated in the battery cell accommodating portion 102.
  • stacked in the height direction planarly viewed the exterior body 33 differs alternately.
  • One of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 housed in the battery cell housing part 102 at one end portion in the height direction is one of the external positive electrode terminal and the external negative electrode terminal of the battery module 1110 or another battery.
  • External terminal of the battery module 100 of the same polarity that is electrically connected to the other of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 housed in the battery cell housing portion 102 at the other end in the height direction of the module 100 Is electrically connected.
  • the other of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 housed in the battery cell housing portion 102 at the other end portion in the height direction is the other of the external positive electrode terminal and the external negative electrode terminal of the battery module 1110 or another battery.
  • External terminal of the battery module 100 of the same polarity that is electrically connected to one of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 housed in the battery cell housing portion 102 at one end in the height direction of the module 100 Is electrically connected.
  • the external terminals of the battery module 100 are held by the cap 220 and led out from the cap 220 to the outside.
  • ⁇ Structure of heat insulating plate> A heat insulating plate 40 is inserted into the heat insulating plate accommodating portion 103 of the housing 101 from the opening at one end portion in the longitudinal direction toward the other side in the longitudinal direction.
  • the heat insulating plate 40 is a molded body molded from a foamable resin member, and as shown in FIG. 1, the outer shape is a hexahedron having a rectangular parallelepiped shape.
  • a rectangular surface having the largest area among the six surfaces constituting the heat insulating plate 40 is referred to as a main surface, and a direction in which the two main surfaces are opposed is defined as a thickness direction.
  • the direction in which the long sides of the rectangular main surface extend in parallel is the longitudinal direction
  • the direction in which the short sides extend in parallel is the short direction.
  • the thickness direction of the heat insulating plate 40 When the heat insulating plate 40 is accommodated in the heat insulating plate 103, the thickness direction of the heat insulating plate 40, the thickness direction of the battery cell 30, the height direction of the housing 101, the longitudinal direction of the heat insulating plate 40, and the longitudinal direction of the battery cell 30.
  • the longitudinal direction of the housing 101, the short direction of the heat insulating plate 40, the short direction of the battery cell 30, and the short direction of the housing 101 are the same.
  • the heat insulating plate 40 has a flat shape in which the dimension in the thickness direction is smaller than the dimension in the longitudinal direction and the short direction.
  • the main surface of the heat insulating plate 40 is in a state facing the heat radiating plate 104 and the end plate 105 or the end plate 106 in the height direction.
  • the heat insulating plate 40 is inserted and stored in the heat insulating plate storage portion 103 from one side in the longitudinal direction.
  • One of the main surfaces of the heat insulating plate 40 is in surface contact with the heat radiating plate 104 over the entire surface.
  • the other main surface of the heat insulating plate 40 is in surface contact with the end plate 105 or the end plate 106 over the entire surface.
  • the width dimension and the depth dimension of the heat insulation board accommodating part 103 are determined by the length of the short surface direction of the main surface of the heat insulation board 40, and a longitudinal direction.
  • ⁇ Cap configuration One end of the casing 101 in the longitudinal direction is open. The positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 protrude outward from the one end face in the longitudinal direction of the casing 101, and The side surface on one side of the short side of the surface is exposed.
  • casing 101 is also opened, and the side of the other side of the short side of the main surface of the heat insulation board 40 on the opposite side to the protrusion side of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 is also carried out. Is exposed.
  • both ends of the longitudinal direction of the casing 101 are covered and sealed by the caps 220 and 221.
  • the caps 220 and 221 are molded bodies molded from an insulating polybutylene terephthalate (PBT) member. As shown in FIG. 1, the outer shape has a rectangular parallelepiped shape and is the main surface having the largest area. A container shape that is surrounded by a rectangular flat bottom wall and a rectangular flat side wall that stands vertically from the edges of the four rectangular sides of the bottom wall, and a rectangular opening is formed on the opposite side of the bottom wall This is a hollow member.
  • PBT polybutylene terephthalate
  • the cap 220 is arrange
  • the cap 221 is disposed on the other side in the longitudinal direction of the housing 101. For this reason, the depth of the cap 220 is larger than the depth of the cap 221 according to the protrusion of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30.
  • the inner shape of the caps 220 and 221 is the same as the outer shape of both ends of the casing 101 in the longitudinal direction, but the inner dimensions of the caps 220 and 221 are larger than the outer dimensions of both ends of the casing 101 in the longitudinal direction. It is getting smaller. That is, the inside of the caps 220 and 221 and the outside of both ends in the longitudinal direction of the housing 101 are similar. For this reason, when the caps 220 and 221 are fitted to both ends in the longitudinal direction of the casing 101, the tightening force from the caps 220 and 221 to the casing 101 is based on the dimensional difference between the caps 220 and 221 and the casing 101.
  • fixing members 201 are arranged at four locations, and screws 202 are fastened to the end plates 105 and 106 by bolts 202 so as to press the end plates 105 and 106 inward from the outside in the height direction. Has been.
  • the fixing member 201 is a constituent material of the casing 101 when the casing 101 is deformed from the outside in the height direction to the inside so that the height dimension of the casing 101 is reduced by pressurization from both sides in the height direction.
  • a regulating member provided to prevent the housing 101 from springing back toward the outside in the height direction due to the elastic force that the housing 101 has, and pressurizing so that the housing 101 is sandwiched from both sides in the height direction.
  • This is a U-shaped processed body that is processed to bend at right angles on both sides in the long side direction of a metal elongated rectangular plate so as to match the height dimension of the subsequent casing 101.
  • both sides of the fixing member 201 are on the outer plane of the end plates 105 and 106 (on the plane opposite to the inner plane on which the abutting member 210 is integrally formed).
  • a screw hole (recess (bottomed) shape) corresponding to a screw hole (through shape) formed in a portion bent at a right angle is formed.
  • An abutting member 210 is integrally formed on the back side (on the plane inside the end plates 105, 106) of the end plate 105, 106 where the screw holes are formed, and is formed on the end plates 105, 106.
  • the screw hole has a depth reaching the abutting member 210.
  • the fixing member 201 extends in the height direction along the side surface of the casing 101 (the uneven surface on the outer side of the flexible members w1 and w2), and is bent at a right angle on the outer plane of the end plates 105 and 106. It is attached to the body 101. At this time, screw holes formed at right-angled portions on both sides of the fixing member 201 and screw holes formed on the outer plane of the end plates 105 and 106 overlap in the height direction.
  • the bolt 202 is inserted into the screw holes formed on the outer plane of the end plates 105 and 106 through the screw holes formed at the right-angled portions on both sides of the fixing member 201.
  • the battery module 100 manufacturing process generally includes the following steps.
  • a battery manufacturing step for manufacturing the battery cell 30 (1) A battery manufacturing step for manufacturing the battery cell 30.
  • a pressure fixing step in which the housing 101 is pressurized from the outside toward the inside from both sides in the height direction to apply a surface pressure to the housing component to adjust the outer dimensions of the housing 101.
  • ⁇ Battery manufacturing step 96% by mass of LiCoO 2 , 2% by mass of acetylene black and 2% by mass of PVDF are mixed, and further N-methyl-2-pyrrolidone (NMP) is added to prepare a positive electrode mixture-containing paste.
  • NMP N-methyl-2-pyrrolidone
  • the obtained positive electrode mixture-containing paste is applied to both surfaces of the positive electrode current collector, dried, and then subjected to press treatment to form a positive electrode mixture layer, thereby obtaining a sheet-like positive electrode.
  • the obtained sheet-like positive electrode is cut into a shape including a rectangular positive electrode mixture layer forming portion and an exposed portion of the rectangular positive electrode current collector.
  • a binder composed of 1.5% by mass of SBR and 0.5% by mass of CMC is added to 98% by mass of graphite and mixed, and further water is added to prepare a negative electrode mixture-containing paste.
  • the obtained negative electrode mixture-containing paste is applied to both surfaces of the negative electrode current collector, dried, and then subjected to a press treatment to form a negative electrode mixture layer, whereby a sheet-like negative electrode is obtained.
  • the obtained sheet-like negative electrode is cut into a shape including a rectangular negative electrode mixture layer forming portion and an exposed portion of the rectangular negative electrode current collector.
  • each sheet-like positive electrode is ultrasonically welded to the aluminum alloy positive electrode terminal
  • the current collector exposed portion of each sheet negative electrode is ultrasonically welded to the copper alloy negative electrode terminal.
  • the positive electrode terminal and the negative electrode terminal have an adhesive layer made of the same modified polyolefin as the resin constituting the heat-sealing resin layer of the outer package on both sides of the portion that is supposed to be located in the heat seal portion of the outer package. Arrange.
  • a laminate film is prepared, and the laminated electrode body is placed on the heat sealing resin layer of the laminate film so that a part of the positive electrode terminal and the negative electrode terminal protrudes, and the laminate film is folded in two so as to wrap the laminated electrode body.
  • each side where the laminate film is stacked is heat-sealed except for a part to form an exterior body, and vacuum-dried at 70 ° C. for a certain time.
  • an electrolytic solution is injected from a part of the side that is not heat-sealed, and the part is heat-sealed and sealed in a reduced pressure state.
  • the sealed electrode body containing the laminated electrode body and the non-aqueous electrolyte is aged for a certain period of time, and then subjected to a chemical conversion treatment by charging with a predetermined current and voltage profile.
  • Type lithium ion secondary battery Type lithium ion secondary battery.
  • the billet is heated to around 500 ° C, which is close to the melting point of the material, and at the same time, the die that is the mold is preheated.
  • the billet is extruded along the shape of the die with a pressing force of 1000 tons or more by the piston of the press machine.
  • the billet that has been extruded and has a predetermined cross-section is slightly twisted or distorted during the cooling process, and is stretched and straightened from both ends.
  • the battery cell 30 is inserted into the battery cell housing portion 102 of the casing 101 from one end in the longitudinal direction (perpendicular to the paper surface), and the heat insulating plate 40 is similarly inserted into the heat insulating plate housing portion 103.
  • the casing 100 is formed in advance so that the height dimensions of the battery cell housing portion 102 and the heat insulating plate housing portion 103 are larger than the size in the thickness direction of the battery cell 30 and the heat insulating plate 40 to be housed. . For this reason, in this embodiment, the battery cell 30 and the heat insulation board 40 can be easily inserted in the housing
  • one positive electrode terminal 31 or negative electrode terminal 32 and the other negative electrode terminal 32 or positive electrode terminal 31 of the battery cell 30 adjacent in the height direction are in the height direction.
  • the orientation of the main surface when viewed in plan of the other exterior body 33 with respect to one of the battery cells 30 adjacent in the height direction extends in the longitudinal direction so that the opposing terminals can be directly connected to each other.
  • the battery cell 30 is inserted into the battery cell housing portion 102 so as to be inverted 180 ° about the axis.
  • the battery cell 30 When the battery cell 30 is inserted into the battery cell housing portion 102 from one end portion in the longitudinal direction, the battery cell 30 uses the butting member 211 as a guide member and the battery cell housing portion 102 along the butting member 211 in the other longitudinal end portion. Move towards the department. This is because the end of the outer casing 33 of the battery cell 30 (the part A shown in FIG. 5, the end on the long side of the rectangular plane when the outer casing 33 is viewed in plan view) is the inner surface of the abutting member 211. The relative position in the short direction between the end of the outer package 33 of the battery cell 30 and the inner surface of the abutting member 211 is determined in advance so as to abut against the surface opposite to the flexible member w2 side. Is due to.
  • the heat insulation board accommodation part 103 is formed so that a width dimension becomes larger than the width dimension of the heat insulation board 40 accommodated. For this reason, when the heat insulating plate 40 is accommodated in the heat insulating plate accommodating portion 103, the end surface of the heat insulating plate 40 (the side end surface on the long side of the rectangular parallelepiped) and the inner surface of the abutting member 210 (the side opposite to the flexible member w1 side). A gap is formed between the two sides (in the short direction).
  • the insertion amount of the battery cell 30 and the heat insulating plate 40 in the longitudinal direction with respect to the battery cell housing portion 102 and the heat insulating plate housing portion 103 is controlled to a constant amount by a jig. ⁇ Pressure fixing step ⁇
  • the portion of the casing 101 (outside of the end plates 105 and 106) corresponding to the position in the short direction where the abutting members 210 and 210 abut each other is indicated by the arrow Y direction (outside in the height direction). (In the direction from the inside to the inside).
  • the casing 101 In pressurizing the casing 101, the casing 101 is pressed in a state where rigid plate-like contact plates (not shown) arranged so as to be parallel to each other are applied to the planes outside the end plates 105 and 106. Thereby, the deformation of the end plates 105 and 106 due to the reaction force of the battery cell 30 and the heat insulating plate 40 accommodated in the battery cell accommodating portion 102 and the heat insulating plate accommodating portion 103 is prevented.
  • the flexible portions w1 and w2 are bent and deformed, and the gap h1 between the abutting abutting members 210 and the gap h2 between the abutting abutting members 211 are reduced in the height direction (approaching 0).
  • the height dimensions of the battery cell housing portion 102 and the heat insulating plate housing portion 103 approach the thickness of the battery cell 30 and the heat insulating plate 40 according to the change in the height direction of the abutting members 210 and 211, and the battery cell 30 eventually becomes
  • the heat sink 104 and the heat insulating plate 40 are in surface contact with the heat sink 104 and the end plates 105 and 106, respectively.
  • the gaps h1 and h2 become 0, and the abutting surfaces of the abutting members 210 constituting the gap h1 and the abutting surfaces of the abutting members 211 constituting the gap h2 are brought into pressure contact.
  • the battery cell 30 is compressed (pressurized) by the heat radiating plate 104 from both sides in the height direction while being in surface contact with the heat radiating plate 104, and is in pressure contact with the heat radiating plate 104.
  • the heat insulating plate 40 is compressed (pressed) by the heat radiating plate 104 and the end plate 105 (106) from both sides in the height direction while being in surface contact with the heat radiating plate 104 and the end plate 105 (106). Press contact with (106).
  • the casing 101 does not deform in the height direction even if the casing 101 is further pressurized.
  • the casing 101 is pressurized, the battery cell 30 and the heat sink 104 are pressed and contacted, and the heat insulating plate 40, the heat sink 104 and the end plate 105 (106) are pressed and contacted.
  • the state is maintained as shown in FIG.
  • fixing members 201 are attached to four locations of the casing 101, and the fixing members 201 are screwed to the casing 101 with bolts 202.
  • the casing 101 springs back toward the outside in the height direction due to the elastic force of the constituent material of the casing 101, and the shape of the casing 101 is based on the original shape. Returning can be prevented.
  • the flexible portions w1 and w2 are bent and deformed by pressurizing the housing 101.
  • the deformation of the flexible portions w1 and w2 may be elastic deformation or plastic deformation.
  • ⁇ Terminal connection / sealing step After the pressure fixing step, one of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 adjacent in the height direction and the other of the positive electrode terminal 31 and the negative electrode terminal 32 of the other battery cell 30 are directly or metal It connects by ultrasonic welding through a bus bar made of metal.
  • the battery cell 30 is accommodated in one of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 accommodated in the battery cell accommodating portion 102 at one end portion in the height direction, and in the battery cell accommodating portion 102 at the other end portion in the height direction.
  • the other of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 is held by a cap 220 and is ultrasonically welded to an external terminal of the same polarity of the battery module 100 that is led out from the cap 220. Connect by welding.
  • the six battery cells 30 are electrically connected in series, and are further electrically connected in series to the external terminals of the battery module 100.
  • the cap 220 After connecting the terminals, the cap 220 is placed on one end in the longitudinal direction of the casing 100 (the end on the side where the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 protrude), and the cap 221 is placed in the longitudinal direction of the casing 100.
  • the other end portion (the end portion on the side opposite to the side from which the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 protrude) is fitted, and both end portions in the longitudinal direction of the housing 100 are sealed.
  • the battery module 100 shown in FIG. 1 can be obtained.
  • the six battery cells 30 are housed in the housing 101 so that the six battery cells 30 are arranged (stacked) in the height direction of the housing 101, and the six heat insulating plates 40 are provided. Since the two heat insulating plates 40 are accommodated in the casing 101 so as to be arranged (stacked) on both outer sides in the arrangement direction of the battery cells 30, the thermal resistance in the height direction of the casing 101 is It can be larger than the thermal resistance in the short direction. Thereby, in this embodiment, the heat of the battery cells 30 at both ends of the array of the six battery cells 30 is difficult to flow in the height direction of the casing 101, and the casings are the same as the other battery cells 30.
  • the heat radiating plates 104 are arranged on both sides of each of the six battery cells 30 in the battery cell arrangement direction, the abutting member 211 is provided on each of the heat radiating plates 104, and adjacent to the height direction of the housing 101.
  • the butting members 211 to be abutted against each other in the height direction of the casing 101, and by this butting, the same load is applied from the corresponding heat sink 104 to each of the six battery cells 30, and the six battery cells 30 Since each and the corresponding heat sink 104 are in pressure contact under the same surface pressure condition, contact at the interface between each of the six battery cells 30 and the corresponding heat sink 104 The thermal resistance can be reduced, and the variation in the contact thermal resistance can be reduced.
  • the amount of heat transmitted from each of the six battery cells 30 to the corresponding heat dissipation plate 104 is increased, and is transmitted from each of the six battery cells 30 to the corresponding heat dissipation plate 104.
  • Variation in heat quantity can be reduced.
  • the heat transfer from each of the six battery cells 30 is controlled, and the variation in the amount of heat transferred from each of the six battery cells 30 is reduced. Variations in the temperature of each battery cell 30 can be reduced.
  • the volume capacity density of the battery module 100 can be increased, and the battery module 1100 including the battery module 100 and, finally, the battery module 1110 configured using the battery module 100 is greatly increased.
  • the capacity can be increased (when the number of battery cells 30 is the same before and after the configuration of the present embodiment is employed).
  • the cruising distance due to full charging of the battery device 1100 is increased by increasing the capacity of the battery device 1100. Can do.
  • capacitance of the battery module 100 when the capacity
  • the number of battery cells 30 can be reduced, and the battery module 1110 can be reduced in size, weight, and cost.
  • the contact thermal resistance between the heat sink 104 and the abutting members 210 and 211 is small, and each contact thermal resistance. Can be reduced. Thereby, in this embodiment, the dispersion
  • the contact thermal resistance between the abutting members 210 and 211 and the flexible members w1 and w2 is reduced.
  • variation in each contact thermal resistance can be reduced.
  • variation in each temperature of the six battery cells 30 can further be reduced.
  • the height dimension of the battery cell housing part 102 and the heat insulating plate housing part 103 before pressurizing the housing 101 is larger than the dimension in the thickness direction of the battery cell 30 and the heat insulating board 40 to be housed. Therefore, it is possible to easily insert the battery cell 30 and the heat insulating plate 40 from the one side in the longitudinal direction with respect to the battery cell receiving portion 102 and the heat insulating plate receiving portion 103.
  • the amount of crushing in the height direction of the heat insulating plate housing portion 103 and the battery cell housing portion 102 is automatically set by bringing the butting members 210 and the butting members 211 adjacent in the height direction into contact with each other. Therefore, the surface pressure between the battery cell 30 and the heat radiating plate 104 and the surface pressure between the heat insulating plate 40, the end plates 105 and 106, and the heat radiating plate 104 are managed to be constant. The characteristics of the battery cell 30 and the heat insulating plate 40 can be stabilized.
  • the heat insulating plate 40 is accommodated in the heat insulating plate accommodating portion 103, but the heat insulating plate 40 may not be accommodated and may be a space (air layer). Moreover, when the heat insulation board accommodating part 103 is made into space, you may arrange
  • FIG. 9 shows the configuration of the casing 101 that constitutes the battery module 100.
  • This embodiment is an improved example of the first embodiment, and a cooling medium flow path 117 through which a cooling medium, for example, forced air, flows is formed in the heat radiating plate 104.
  • a cooling medium for example, forced air
  • the cooling medium flow path 117 is continuously formed from one side in the longitudinal direction to the other side, and is formed with a groove opened on one side in the height direction and continuously from one side in the longitudinal direction to the other side.
  • the heat sink 104 is formed in a rectangular wave shape in which the angle of the bent portion b is a right angle so that the grooves opened on the other side are alternately arranged in the short direction (recessed (concave) in the short direction of the heat sink 104 And protrusions (convex) are formed alternately), and the opening of the groove is covered with the battery cell 30 or the heat insulating plate 40.
  • the grooves constituting the cooling medium flow path 117 are formed at the same time when the casing 101 is formed by extrusion processing using a mold.
  • the heat of the battery cell 30 is transmitted to the cooling medium flowing through the cooling medium flow path 117 in addition to the heat transmitted to the heat radiating plate portion 104, so that the temperature of the battery cell 30 is set to the first temperature.
  • the charge / discharge characteristics of the battery cell 30 can be improved.
  • the angle of the bent portion b in the longitudinal section of the heat radiating plate portion 104 is a right angle, but it is not necessarily limited to the shape.
  • the angle may be an acute angle or an obtuse angle.
  • FIG. 10 shows the configuration of the casing 101 that constitutes the battery module 100.
  • the present embodiment is an improved example of the first embodiment, and a positioning portion 128 that abuts on both lateral end surfaces of the projecting portion of the battery cell 30 to determine the relative position of the battery cell 30 in the lateral direction.
  • the heat radiating plates 104 are formed at both ends in the short direction of the heat radiating plate 104, which are in contact with the protruding end surfaces of the protruding portions of the battery cells 30 adjacent to each other in the height direction.
  • the positioning portion 128 is a portion where the thickness of both end portions of the heat radiating plate 104 is increased in the height direction so as to match the shape of both end surfaces of the projecting portion of the battery cell 30 in the short direction. It is formed at the same time when the housing 101 is formed.
  • the positioning portion 128 has a hollow structure continuous in the longitudinal direction. For this reason, the cross-sectional shape of the positioning part 128 in the longitudinal direction is a bifurcated shape branched in two directions.
  • the relative position of the battery cell 30 in the short direction can be automatically determined by the positioning portion 128.
  • the manufacturing efficiency of the module 100 can be improved.
  • the position of the battery cell 30 in the short direction is regulated by the positioning unit 128 from both sides, so that even if the battery module 100 vibrates due to external force, A relative displacement with respect to the battery cell 30 can be prevented, and the vibration resistance of the battery module 100 can be improved.
  • FIG. 11 shows a partial configuration of the casing 101 that constitutes the battery module 100.
  • This embodiment is an improved example of the first embodiment.
  • the abutting member 211 is abutted against the abutting surfaces of the abutting members 210 that abut against each other in the height direction, and the abutting member 211 that abuts adjacently in the height direction.
  • Engaging portions 119 are formed on the abutting surfaces of each other.
  • the engaging portion 118 is formed on one of the concavo-convex portions formed on one abutting surface of the abutting member 210 that abuts adjacent to each other in the height direction, and on the abutting surface of the other abutting member 210, and is uneven in the height direction.
  • the other of the concavo-convex parts facing one of the parts is configured to be engaged by deformation by pressurization in the height direction of the housing 101.
  • the engaging portion 119 is formed on one of the concavo-convex portions formed on one abutting surface of the abutting member 211 that abuts adjacent to each other in the height direction, and on the abutting surface of the other abutting member 211, and is uneven in the height direction.
  • the other of the concavo-convex parts facing one of the parts is configured to be engaged by deformation by pressurization in the height direction of the housing 101.
  • the concave portions of the engaging portions 118 and 119 are continuously formed in a uniform shape in the longitudinal direction, and the side wall surface in the short direction forming the recess is tapered.
  • the convex portions of the engaging portions 118 and 119 are continuously formed in a uniform shape in the longitudinal direction, and the side wall surfaces in the short direction forming the projections are tapered in accordance with the tapered shape of the concave portions. ing.
  • FIG. 12 shows the configuration of the casing 101 that constitutes the battery module 100.
  • This embodiment is a modification of the first embodiment, in which the heat radiating plate 104 and the abutting member 211 are formed separately.
  • the butting members 211 provided corresponding to the heat sink 104 are in the height direction.
  • a butting member 211 arranged in a straight line and integrally formed with the end plate 105 is connected to the end plate 105 via a flexible member w1 adjacent to the end plate 105 in the height direction.
  • it is connected to the next abutting member 211 (opposite side to the end plate 105 side) of the abutting member 211 adjacent in the height direction via the flexible member w2, and so on.
  • 211 is connected in order via flexible members w1 and w2, and is integrally formed with other components excluding the heat sink 104.
  • the abutting member 211 has an end plate in which the cross-sectional shape in the longitudinal direction is uniform in the longitudinal direction of an inverted L shape, and the flexible members w1 and w2 or the flexible member w2 are connected as constituent parts. 105 and 106, and a vertical plane portion provided perpendicular to the parallel plane portion so as to protrude from the parallel plane portion to one side in the height direction.
  • the casing 101 has a longitudinal direction so that the heat radiating plate 104 is sandwiched between a gap between the abutting member 210 and the abutting member 211 adjacent in the height direction, or a gap between the abutting members 211 adjacent in the height direction. It is inserted from one end of the direction.
  • the space surrounded by the end plates 105 and 106 facing each other in the height direction, the butting members 210 and 211, and the flexible members w1 and w2 is partitioned by the heat radiating plate 104 and divided into a plurality of spaces in the height direction.
  • the Of the plurality of divided spaces the divided spaces formed at both ends in the height direction form a heat insulating plate housing portion 103, and the remaining divided spaces form the battery cell housing portion 102.
  • Both ends of the heat sink 104 in the short direction are on one side in the height direction (on the opposite side to the projecting side of the abutting member 210 and the abutting member 211 formed integrally with the end plate 105 in the height direction. It is bent at a right angle so as to protrude in the height direction of the integrally formed butting member 201 and to have a uniform shape in the longitudinal direction. A portion bent at a right angle of the heat radiating plate 104 is surrounded by a space surrounded by the butting member 210, the butting member 211, and the flexible member w1, or by the butting member 211 and the flexible member w2 adjacent in the height direction. Are arranged in a designated space.
  • the portion bent at a right angle of the heat radiating plate 104 is formed by the abutting member 210, the abutting member 211, and the flexible member w1. It inserts so that it may be arrange
  • the heat radiating plate portion 104 is made of an aluminum alloy, and has an insulating coating processed on the surface to ensure electrical insulation from the battery cell 30.
  • the surface of the casing 101 is subjected to a roughening process for increasing the surface area and increasing the heat exchange efficiency.
  • the flexible portions w1 and w2 are bent and deformed, and the projecting end surface of the abutting member 210 and the parallel plane portion of the abutting member 211 adjacent to each other in the height direction. And the gap h4 between the projecting end surface of one vertical plane portion and the surface of the other parallel plane portion of the abutting member 211 adjacent to each other in the height direction are reduced and integrated with the end plate 106.
  • the projecting end surface of the butting member 210 formed integrally with the end plate 105 in a state where the projecting end surface of the butting member 210 and the parallel flat portion of the butting member 211 are in surface contact with the plane on one side of the heat sink 104
  • the projecting end surface of the vertical plane portion of the butting member 211 is close to the other plane of the heat sink 104.
  • the end plate 105 is brought into contact with the projecting end surface of the abutting member 210 formed integrally with the end plate 106 and the parallel flat portion of the abutting member 211 with the plane on one side of the heat radiating plate 104.
  • the projecting end surface of the abutting member 210 and the projecting end surface of the vertical planar portion of the abutting member 211 are in surface contact with the other side plane of the heat sink 104.
  • the projecting end surface of the abutting member 210 formed integrally with the end plate 106 and the parallel plane portion of the abutting member 211 are placed on one side of the heat radiating plate 104, and the end plate 105
  • the projecting end surface of the abutting member 210 and the projecting end surface of the vertical plane portion of the abutting member 211 are in pressure contact with the other side plane of the heat sink 104, respectively.
  • the battery cell 30 is compressed (pressurized) by the heat radiating plate 104 from both sides in the height direction while being in surface contact with the heat radiating plate 104, and is in pressure contact with the heat radiating plate 104.
  • the heat insulating plate 40 is compressed (pressed) by the heat radiating plate 104 and the end plate 105 (106) from both sides in the height direction while being in surface contact with the heat radiating plate 104 and the end plate 105 (106). Press contact with (106).
  • the surface pressure acting on the battery cell 30 and the heat insulating plate 40 from the heat radiating plate 104 is adjusted by adjusting the height dimensions of the battery cell housing portion 102 and the heat insulating plate housing portion 103 and the gaps h3 and h4 in advance. be able to.
  • the casing 101 and the heat sink 104 are not necessarily made of the same material, and an optimum material can be used for each.
  • the heat sink 104 may adopt an A1000 series aluminum alloy with higher thermal conductivity. Good. If it does in this way, the heat transfer characteristic of the battery cell 30 can be improved, and the charge / discharge characteristic of the battery module 100 can be improved.
  • the abutting members 210 and 211 and the heat radiating plate 104 there is an interface between the abutting members 210 and 211 and the heat radiating plate 104, but the abutting members 210 and 211 and the heat radiating plate 104 are in pressure contact to obtain a large surface pressure. Therefore, the contact thermal resistance can be kept small.
  • FIG. 13 shows the configuration of the casing 101 of the battery module 100.
  • This embodiment is a modification of the second embodiment.
  • the present embodiment differs from the second embodiment in the following (1) to (4).
  • a square lithium ion secondary battery is used as the battery cell 30.
  • the battery cell 30 includes an aluminum alloy battery can 351 and a rectangular parallelepiped exterior body configured by an aluminum alloy battery lid 352 that closes the opening of the battery can 351.
  • a rectangular surface having the largest area among the six surfaces constituting the exterior body of the battery cell 30 is referred to as a main surface, and a direction in which the two main surfaces are opposed is defined as a thickness direction.
  • the direction in which the long sides of the rectangular main surface extend in parallel is the longitudinal direction
  • the direction in which the short sides extend in parallel is the short direction.
  • the surfaces that are arranged on both the short side and the long side of the main surface and that are orthogonal to the long and short sides of the main surface are called side surfaces, and the side surfaces that are orthogonal to the long sides of the main surface are opposed to each other.
  • the direction to be defined is defined as the short direction (the same direction as the short direction of the main surface), and the direction in which the side surfaces orthogonal to the short side of the main surface are opposed is defined as the long direction (the same direction as the long direction of the main surface).
  • the thickness direction of the battery cell 30 and the height direction of the housing 101, the longitudinal direction of the battery cell 30 and the longitudinal direction of the housing 101, The short direction and the short direction of the housing 101 are the same.
  • the dimension in the thickness direction of the outer package of the battery cell 30 is smaller than the dimension in the longitudinal direction and the lateral direction. Therefore, the exterior body of the battery cell 30 has a flat shape.
  • the battery can 351 is composed of two main surfaces of the exterior body, two side surfaces orthogonal to the short sides of the two main surfaces, and one side surface orthogonal to the long sides of the two main surfaces.
  • the battery lid 352 is constituted by the remaining one side surface orthogonal to the long sides of the two main surfaces of the exterior body.
  • a positive electrode terminal 353 protrudes in the short direction from one end portion in the longitudinal direction of the battery lid 352, and a negative electrode terminal 354 protrudes in the short direction from the other end portion in the longitudinal direction of the battery lid 352.
  • the abutting members 210 and 211 and the flexible members w1 and w2 at one end portion in the short direction of the casing 101 are removed, and the one end portion in the short direction of the casing 101 is replaced with a battery cell.
  • An opening end of the battery cell 30 into the storage portion 102 is used.
  • the battery cell accommodating portion 102 has an opening at one end in the short direction of the casing 101, and the battery cell 20 is from the side opposite to the protruding side of the positive electrode terminal 353 and the negative electrode terminal 354, that is, from the bottom side of the battery can 351.
  • the housing 101 is inserted toward the other side in the short direction.
  • the battery cells 30 inserted and accommodated in the battery cell accommodating portion 102 of the housing 101 are electrically connected in series via a metal bus bar (not shown). For this reason, when the battery cell 30 is inserted into the battery cell housing portion 102 of the casing 101, the positive terminal 353 and the negative terminal 354 of the battery cell 30 are collected on one side in the short direction of the casing 101, The battery cell 30 is inserted and accommodated in the battery cell accommodating part 102 so that it may protrude from the one side edge part of the body 101 in the transversal direction.
  • one positive electrode terminal 353 or negative electrode terminal 354 of the battery cell 30 adjacent in the height direction and the other negative electrode terminal 354 or positive electrode terminal 353 are arranged in the height direction so that they can be connected via a bus bar.
  • the battery cell 30 is connected to the battery cell 30 such that the orientation of the main surface of the other exterior body with respect to one of the battery cells 30 adjacent in the height direction is inverted by 180 ° about the central axis extending in the short direction. It is inserted and accommodated in the cell accommodating portion 102. Thereby, as for the battery cell 30 laminated
  • the end plate 105 that does not form the heat insulating plate accommodating portion for accommodating the heat insulating plate 40 and is flush with the outer flat surface of the abutting member 210 on both end surfaces in the height direction of the housing 101, 106 is recessed inward in the height direction from the projecting end surface (butting surface) of the butting member 210.
  • the casing 101 is pressurized from the height direction and the abutting members 210 adjacent to each other in the height direction are brought into contact with each other, the flat surfaces inside the recessed portions of the end plates 105 and 106 are dissipated in the height direction.
  • the plate 104 comes into surface contact.
  • Thermal insulation between the battery cells 30 disposed at both ends in the stacking direction of the battery cells 30 stacked in the height direction and the end plates 105 and 106 is performed by the battery cells 30 disposed at both ends in the stacking direction,
  • a plurality of ribs 356 are formed on the outer plane of the recessed portions of the end plates 105 and 106.
  • the ribs 356 are provided to increase the bending rigidity of the end plates 105 and 106 so that the end plates 105 and 106 are not warped or deformed even when the battery cell 30 accommodated in the battery cell accommodating portion 102 is strongly pressed. It has been.
  • the ribs 356 are elongated rectangular flat plates formed so as to extend continuously in the longitudinal direction, and are arranged at predetermined intervals (equal intervals) in the short direction, and outside the recessed portions of the end plates 105 and 106. Are formed integrally with the end plates 105 and 106 so as to protrude vertically outward in the height direction.
  • the fixing member 241 is a restriction member provided to prevent the casing 101 from being deformed (springback) toward the outside in the height direction, and to prevent unintended distortion and twisting of the battery module 100 as a whole.
  • both sides in the long side direction of the metal elongated rectangular plate are perpendicular to each other. It is a U-shaped processed body that has been processed to be bent into a square shape.
  • the fixing member 241 extends in the height direction along the side surface (the side surface on the side where the inlet and outlet of the cooling medium flow path 117 are opened) of the casing 101 in the longitudinal direction, and the end plates 105 and 106 are recessed portions. It attaches to the housing
  • one battery cell 30 protrudes to one side in the short side direction of the housing 101 (on the side where the battery cell 30 is inserted into the battery cell housing portion 102). This is for convenience in order to describe the embodiment of the battery cell 30.
  • the same effect as the second embodiment can be achieved, that is, the heat transfer of the battery cell 30 can be controlled, and the temperature variation of the battery cell 30 can be controlled.
  • the battery module 100 that can be reduced can be configured.
  • FIG. 14 shows the configuration of the casing 101 of the battery module 100.
  • This embodiment is an improved example of the sixth embodiment, in which the heat radiating plate 104 is a flat plate, and a plurality of through holes are formed in the flat plate to form the cooling medium flow path 117.
  • the cooling medium flow path 117 is formed by forming a plurality of through holes penetrating from one side of the longitudinal direction to the other side at equal intervals in the lateral direction.
  • the cross-sectional shape of the through hole in the longitudinal direction is a rectangular shape, and is a uniform shape in the longitudinal direction.
  • the through holes constituting the cooling medium flow path 117 are formed at the same time when the casing 101 is formed by extrusion processing using a mold.
  • the cooling medium flowing through the cooling medium flow path 117 does not directly contact the battery cell 30, and the cooling medium is not affected even if the battery cell 30 and the heat sink 104 are not completely in close contact with each other. Leakage from the gap can be prevented.
  • a liquid having a large heat transfer amount such as a coolant containing water or an antifreeze liquid can be used as a cooling medium instead of a gas such as air, so that the temperature of the battery cell 30 can be further increased.
  • a gas such as air
  • FIG. 15 shows the configuration of the battery module 100.
  • This embodiment is an improved example of the first embodiment, and an end plate 358 made of aluminum alloy formed as a separate member is provided on a plane outside the end plates 105 and 106 of the housing 101, and the end plate 358 is provided.
  • the end plate 358 and the casing 101 are integrally pressure-fixed by clamping the casing 101 from both sides in the height direction and screwing a through bolt 262 and a nut (not shown).
  • the end plate 358 includes a flat plate portion that is in surface contact with the end plates 105 and 106, and a plurality of ribs 359 that are integrally formed on a plane opposite to the surface contact side of the flat plate portion with the end plates 105 and 106. I have.
  • the flat plate portion of the end plate 358 has the same size and the same shape (rectangular shape) as the outer plane of the end plates 105 and 106.
  • the ribs 359 are elongated rectangular flat plates formed so as to continuously extend in the short direction, are arranged at predetermined intervals (equal intervals) in the longitudinal direction, and the end plates 105 of the flat plate portion of the end plate 358, On the plane opposite to the surface contact side with the end plates 105 and 106 of the flat plate portion of the end plate 358 so as to protrude vertically outward in the height direction from the plane opposite to the surface contact side with 106. Is provided.
  • the caps 220 and 221 are fitted to both ends in the longitudinal direction of the laminated body in a state where end plates 358 are laminated on both sides in the height direction of the casing 101.
  • a through-hole that penetrates in the height direction and communicates with a through-hole in the wall formed by the abutting members 210 and 211 at both ends in the short-side direction of the casing 101 is formed.
  • Through bolts 262 are inserted into the through holes formed by these through holes from the outside of the end plate 358 on one side in the height direction.
  • the tip of the through bolt 262 protrudes outward from the end plate 358 on the other side in the height direction and is screwed into a nut (not shown).
  • the end plate 358 is screwed to the housing 101, presses the housing 101 from both sides in the height direction, and maintains the state of pressure deformation of the housing 101.
  • the length of the side in the short direction is longer than the length of the side in the height direction.
  • the length of the side in the height direction of the rectangular section in the longitudinal direction of the abutting member 211 is longer than the length of the side in the short direction.
  • the length of the side in the short direction of the rectangular cross section in the longitudinal direction of the abutting member 211 is longer than the length of the side in the height direction in the same manner as the abutting member 210 because of the formation of the through hole through which the H.262 is passed. That is, in this embodiment, the size of the rectangular cross section in the longitudinal direction of the abutting members 210 and 211 is the same.
  • the rigidity of the end plate 358 is taken into account and the bending rigidity of the casing 101 is increased. Therefore, there is no intention with the reaction force of the battery cell 30 or the heat insulating plate 40 due to the pressurization in the height direction of the housing 101. Warpage of the casing 101 can be suppressed, and the surface pressure of the battery cell 30 and the heat insulating plate 40 can be appropriately maintained.
  • the rib 359 can ensure a desired bending rigidity without causing an unnecessary weight increase of the end plate 358.
  • the rib 359 can be extended in a direction independent of the extrusion direction of the casing 101 by separating the casing 101 and the end plate 358 from each other. Since the ribs 359 can define the flow direction of the refrigerant medium such as air flowing on the surface of the end plate 358, the flow of the cooling medium in a direction different from the extrusion direction of the casing 101 can be obtained.
  • the refrigerant medium such as air flowing on the surface of the end plate 358
  • FIG. 16 shows the configuration of the casing 101 of the battery module 100.
  • This embodiment is an improved example of the first embodiment, and ultrasonic welding (welding) is performed between the butt surfaces of the butt members 210 and 211 adjacent to each other in the height direction.
  • the ones adjacent in the direction are mechanically integrated.
  • the casing 101 is pressed from both sides in the height direction, and the abutting surfaces of the abutting members 210 and 211 adjacent to each other in the height direction are in contact with each other on the plane outside the end plate 105.
  • a metallic ultrasonic horn is applied to each of the anvils on the outer plane of the end plate 106, and the casing 101 is pressurized and bonded to each other by ultrasonic vibration. Thereby, joining can be performed simultaneously with the pressure contact between the abutting surfaces of the abutting members 210 and 211 in the height direction.
  • the casing 101 is made of an A6000 series aluminum alloy, but may be made of an A1000 series aluminum alloy having excellent extrudability and higher thermal conductivity.
  • the casing 101 is made of a metal using an aluminum alloy, but may be made of a resin such as polybutylene terephthalate (PBT) or polyphenylene sulfide (PPS).
  • PBT polybutylene terephthalate
  • PPS polyphenylene sulfide
  • the thickness of the heat radiating plate 104 is the same, but the thickness is changed according to the position of the battery cell 30 in the height direction of the housing 101 to further increase the heat flow of the battery cell 30. You may make it equalize finely.
  • the rectangular parallelepiped heat insulating plate 40 is disposed in the heat insulating plate accommodating portions 103 formed at both ends in the height direction of the housing 101, but the heat insulating plate is accommodated by a partition extending in the longitudinal direction.
  • the unit 103 may be divided into a plurality in the short direction.
  • the partition extending in the longitudinal direction can have a function of suppressing deformation of the casing 101 in the pressurizing direction, and can stabilize the deformation of the heat insulating plate housing portion 103 when the casing 101 is pressurized.
  • the heat insulating plate 40 may be modified other than a rectangular parallelepiped.
  • the surface of the casing 101 is roughened, but anodizing treatment such as improvement of insulation or surface protection may be performed as necessary.
  • lithium cobaltate is used as the positive electrode active material and graphite is used as the negative electrode active material, but other active materials may be used.
  • the positive electrode active material is a material capable of inserting and removing lithium ions, and a lithium transition metal composite oxide in which a sufficient amount of lithium ions has been inserted in advance may be used.
  • a material in which a part of lithium or a transition metal is substituted or doped with an element other than those may be used.
  • limiting in particular also about the crystal structure of lithium transition metal complex oxide You may have any crystal structure of a spinel system, a layer system, and an olivine system.
  • the negative electrode active material examples include carbon materials such as coke and amorphous carbon, and the particle shape is not particularly limited to a scale shape, a spherical shape, a fibrous shape, a massive shape, or the like. Further, other conductive materials and binders may be used.
  • the binder includes polytetrafluoroethylene, polyethylene, polystyrene, polybutadiene, butyl rubber, nitrile rubber, styrene / butadiene rubber, polysulfide rubber, nitrocellulose, cyanoethyl cellulose, various latexes, acrylonitrile, vinyl fluoride, vinylidene fluoride, fluorine. And polymers such as propylene fluoride and chloroprene fluoride, and mixtures thereof.
  • a non-aqueous electrolytic solution in which LiPF 6 is dissolved in an ethylene carbonate organic solvent such as ethylene carbonate is used.
  • a lithium salt is used as an electrolyte, and this is dissolved in an organic solvent.
  • a non-aqueous electrolyte may be used.
  • the electrolyte LiClO 4 , LiAsF 6 , LiBF 4 , LiB (C 6 H 5 ) 4 , CH 3 SO 3 Li, CF 3 SO 3 Li, or a mixture thereof can be used.
  • organic solvent diethyl carbonate, propylene carbonate, 1,2-diethoxyethane, ⁇ -butyrolactone, sulfolane, propionitrile, or a mixed solvent in which two or more of these are mixed can be used.
  • one of the positive electrode terminal 31 and the negative electrode terminal 32 of the battery cell 30 adjacent in the height direction and the other of the positive electrode terminal 31 and the negative electrode terminal 32 of the other battery cell 30 The metal bus bar was brought into contact with each other and joined by ultrasonic welding (welding), but through holes were formed in the positive electrode terminal 31 and the negative electrode terminal 32, and the terminals to be connected were in direct contact with each other and between the other terminals.
  • a plurality of terminals are laminated so as to interpose an insulating material, and a bolt having electrical insulation is inserted into a through hole of the laminated terminal group, and a bolt and a nut are arranged on the side opposite to the bolt insertion side. And the terminal group may be screwed together and connected.
  • the metal layer of the laminate film is made of an aluminum alloy, but it may be made of a stainless steel film.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)
PCT/JP2013/063619 2012-05-18 2013-05-16 Module de stockage d'énergie et son procédé de fabrication Ceased WO2013172397A1 (fr)

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CN113471589A (zh) * 2021-06-30 2021-10-01 东莞新能安科技有限公司 一种电池包及用电设备
US11220988B2 (en) 2016-03-02 2022-01-11 Gentherm Incorporated Systems and methods for supplying power in a hybrid vehicle using capacitors, a battery and one or more DC/DC converters
WO2023125778A1 (fr) * 2021-12-30 2023-07-06 比亚迪股份有限公司 Module de batterie, bloc-batterie et véhicule
CN116799404A (zh) * 2022-03-17 2023-09-22 比亚迪股份有限公司 电池模组、电池包及车辆
WO2024224950A1 (fr) * 2023-04-25 2024-10-31 株式会社デンソー Système d'alimentation électrique et programme de commande d'alimentation électrique
CN119674336A (zh) * 2025-02-20 2025-03-21 江苏领康电子科技发展有限公司 一种体能测试仪用户外移动电源

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KR102284339B1 (ko) * 2015-09-09 2021-08-04 에스케이이노베이션 주식회사 배터리 모듈
KR102058689B1 (ko) 2015-09-22 2019-12-23 주식회사 엘지화학 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차
US10124793B2 (en) 2016-03-02 2018-11-13 Gentherm Incorporated Systems and methods for supplying power in a hybrid vehicle using capacitors, a battery and one or more DC/DC converters
TWI619287B (zh) * 2017-05-16 2018-03-21 Battery device with ceramic heat insulation paper and heat dissipation channel
JP6805979B2 (ja) * 2017-06-30 2020-12-23 株式会社豊田自動織機 蓄電装置およびその製造方法
JP7176530B2 (ja) 2017-11-30 2022-11-22 三菱ケミカル株式会社 仕切り部材、組電池及び組電池の熱伝達制御方法
JP7107088B2 (ja) * 2018-08-17 2022-07-27 日産自動車株式会社 電池パック
JP2020083297A (ja) * 2018-11-19 2020-06-04 アイシン軽金属株式会社 電池の車両搭載構造
JP7151493B2 (ja) * 2019-01-15 2022-10-12 トヨタ自動車株式会社 電池装置
JP7218691B2 (ja) * 2019-08-29 2023-02-07 トヨタ紡織株式会社 電池モジュール
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KR102917540B1 (ko) 2020-01-21 2026-01-23 주식회사 엘지에너지솔루션 셀 모듈 어셈블리 및 그 제조 방법
JP7503933B2 (ja) * 2020-04-23 2024-06-21 株式会社豊田中央研究所 電池パック
KR102364203B1 (ko) * 2020-04-24 2022-02-18 에너테크인터내셔널 주식회사 전기자동차용 배터리 가열을 위한 히터 시스템을 구비하는 전기자동차용 배터리 시스템
CN116487789A (zh) 2022-01-13 2023-07-25 宁德时代新能源科技股份有限公司 箱体、电池、用电装置以及制备电池的方法和装置
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US11852114B2 (en) 2016-03-02 2023-12-26 Gentherm Incorporated Systems and methods for supplying power in a hybrid vehicle using capacitors, a battery and one or more DC/DC converters
CN109155429A (zh) * 2016-03-02 2019-01-04 捷温汽车有限公司 用于车辆的电池和电容器组件以及用于加热和冷却电池和电容器组件的方法
US11220988B2 (en) 2016-03-02 2022-01-11 Gentherm Incorporated Systems and methods for supplying power in a hybrid vehicle using capacitors, a battery and one or more DC/DC converters
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JP2024525458A (ja) * 2021-06-30 2024-07-12 東莞新能安科技有限公司 電池パックおよび電力消費機器
CN113471589A (zh) * 2021-06-30 2021-10-01 东莞新能安科技有限公司 一种电池包及用电设备
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CN113471589B (zh) * 2021-06-30 2025-09-26 宁德新能源科技有限公司 一种电池包及用电设备
WO2023125778A1 (fr) * 2021-12-30 2023-07-06 比亚迪股份有限公司 Module de batterie, bloc-batterie et véhicule
EP4395034A4 (fr) * 2021-12-30 2024-12-18 BYD Company Limited Module de batterie, bloc-batterie et véhicule
CN116799404A (zh) * 2022-03-17 2023-09-22 比亚迪股份有限公司 电池模组、电池包及车辆
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WO2024224950A1 (fr) * 2023-04-25 2024-10-31 株式会社デンソー Système d'alimentation électrique et programme de commande d'alimentation électrique
CN119674336A (zh) * 2025-02-20 2025-03-21 江苏领康电子科技发展有限公司 一种体能测试仪用户外移动电源

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