WO2022067809A1 - 电池、装置、电池的制备方法以及制备装置 - Google Patents

电池、装置、电池的制备方法以及制备装置 Download PDF

Info

Publication number
WO2022067809A1
WO2022067809A1 PCT/CN2020/119737 CN2020119737W WO2022067809A1 WO 2022067809 A1 WO2022067809 A1 WO 2022067809A1 CN 2020119737 W CN2020119737 W CN 2020119737W WO 2022067809 A1 WO2022067809 A1 WO 2022067809A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery cell
battery
pressure relief
relief mechanism
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/119737
Other languages
English (en)
French (fr)
Inventor
李全国
叶永煌
梁成都
金海族
刘倩
胡霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to KR1020227021104A priority Critical patent/KR102911132B1/ko
Priority to PCT/CN2020/119737 priority patent/WO2022067809A1/zh
Priority to CN202080104131.8A priority patent/CN116114113B/zh
Priority to EP20955829.5A priority patent/EP4064435A4/en
Priority to CN202510051091.XA priority patent/CN119864587B/zh
Priority to JP2022539699A priority patent/JP7674361B2/ja
Publication of WO2022067809A1 publication Critical patent/WO2022067809A1/zh
Priority to US17/985,813 priority patent/US12002984B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/61—Types of temperature control
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • 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
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/375—Vent means sensitive to or responsive to temperature
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/20—Pressure-sensitive devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 application relates to the technical field of energy storage, and in particular, to a battery, a device, a battery preparation method, and a preparation device.
  • embodiments of the present application provide a battery, a device, a method for preparing a battery, and a device for preparing a battery, so as to improve the use safety of the battery.
  • a first aspect of the embodiments of the present application provides a battery, including:
  • a first battery cell the first battery cell includes a first pressure relief mechanism for actuating to relieve the pressure of the first battery cell when the internal pressure or temperature of the first battery cell reaches a threshold value. internal pressure;
  • a second battery cell including a second pressure relief mechanism for actuating to relieve the second battery cell when the internal pressure or temperature of the second battery cell reaches a threshold internal pressure;
  • the energy density of the first battery cell is greater than that of the second battery cell, and the area of the first pressure relief mechanism is larger than the area of the second pressure relief mechanism.
  • the battery provided by the embodiment of the present application has the following advantages:
  • a first pressure relief mechanism is arranged on the first battery cell, so that when the internal pressure or temperature of the first battery cell reaches a threshold, the first battery cell can release the internal pressure;
  • a second pressure relief mechanism is arranged on the second battery cell, so that when the internal pressure or temperature of the second battery cell reaches a threshold, the second battery cell can also release the internal pressure; the energy density of the first battery cell is greater than that of the second battery cell The energy density of the battery cell, the failure reaction of the thermal failure of the first battery cell is more severe than that of the second battery cell.
  • the first battery cell with a more severe failure reaction can release the pressure in a timely and effective manner through the first pressure relief mechanism with a larger area, which can effectively alleviate the rapid temperature rise of the first battery cell, thereby effectively reducing the thermal failure of the first battery cell.
  • the probability of triggering a chain reaction improves the overall safety of the battery.
  • the ratio of the area A1 of the first pressure relief mechanism to the area A2 of the second pressure relief mechanism satisfies: 1.5 ⁇ A1/A2 ⁇ 4, so that the first battery cell and the second battery cell can be Both can release the pressure in a timely and effective manner and improve the safety of the battery.
  • the ratio of the energy density E1 of the first battery cell to the energy density E2 of the second battery cell satisfies: 1.26 ⁇ E1/E2 ⁇ 2.14. In this way, while ensuring the safety of the battery, Increase the capacity of the battery.
  • the first battery cells and the second battery cells are alternately arranged in an arrangement of n first battery cells and m second battery cells, where n ⁇ , m ⁇ 1, so,
  • the first battery cells and the second battery cells with different energy densities are arranged at intervals, which is beneficial to slow down the spread of thermal diffusion, thereby improving the use safety of the battery.
  • the battery further includes a discharge passage disposed opposite the first pressure relief mechanism and/or the second pressure relief mechanism, and the discharge passage is configured to collect pressure from the first pressure relief mechanism upon actuation of the first pressure relief mechanism Emissions from the battery cells, and/or collection of emissions from the second battery cells upon actuation of the second pressure relief mechanism. Disposing the discharge channel can release the pressure inside the first battery cell and the second battery cell in time when the internal pressure and temperature of the first battery cell and the second battery cell reach the threshold value, thereby making the battery safer to use.
  • each discharge passage is isolated from each other, the first pressure relief mechanism and the second pressure relief mechanism are respectively arranged opposite to different discharge passages, the first battery cell and the second battery
  • the discharges of the cells can be discharged to the outside of the battery in a timely and effective manner, and the possibility that the solid substances released by the first battery cell and the second battery cell block the discharge channel is effectively reduced, and the use safety of the battery is improved.
  • first battery cells there are at least two first battery cells, and the first pressure relief mechanisms of two adjacent first battery cells are respectively disposed opposite to different discharge channels.
  • the cells release the emissions through different discharge channels respectively, so that the emissions of the first battery cell are discharged to the outside of the battery in a timely and effective manner, and it can effectively reduce the thermal failure of the first battery cell.
  • the probability of thermal failure of a single battery cell is beneficial to alleviate the chain reaction of thermal failure and improve the safety of the battery.
  • the cells respectively release the emissions through different discharge channels, so that the emissions of the second battery cell can be discharged to the outside of the battery in a timely and effective manner, and it can effectively reduce the thermal failure of the second battery cell.
  • the probability of thermal failure of the two battery cells is beneficial to alleviate the chain reaction of thermal failure and improve the safety of the battery.
  • the battery further includes a box body, the box body has a plurality of walls, the plurality of walls are used to enclose a accommodating cavity for accommodating the first battery cell and the second battery cell, at least one of the plurality of walls
  • the wall has a hollow lumen for forming a discharge channel.
  • the box body is used to protect the first battery cell and the second battery cell placed in the accommodating cavity, and at least one of the plurality of walls of the box body is provided with a hollow inner cavity forming a discharge channel, so that the When the internal pressure or temperature of the first battery cell and the second battery cell reaches a threshold value, the discharge of the first battery cell and the second battery cell can be discharged into the hollow inner cavity, so that the first battery cell and the second battery cell can be discharged into the hollow cavity.
  • the discharge when the second battery cell thermally fails can be discharged to the outside of the battery in a timely and effective manner, thereby improving the use safety of the battery.
  • the plurality of walls includes a bottom wall for supporting the first battery cell and the second battery cell, the bottom wall having a hollow inner cavity, such that the discharge in the first battery cell is released downwardly , and enter into the hollow cavity at the bottom through the pressure relief mechanism. At the same time, the discharge in the second battery cell is released downward and enters the hollow cavity at the bottom through the second pressure relief mechanism.
  • This arrangement allows the battery to release emissions to the bottom of the vehicle after the battery is placed in the battery compartment of the vehicle, rather than to the passenger compartment above the battery compartment, thereby further increasing the safety of the battery.
  • the at least one wall is configured to be broken upon actuation of the first pressure relief mechanism and/or the second pressure relief mechanism to allow exhaust from the first battery cell and/or the second battery cell
  • the material passes through at least one wall into the corresponding discharge channel, so that when the internal pressure or temperature of the first battery cell reaches a threshold value, the first pressure relief mechanism of the first battery cell is activated, and the first battery cell internal When the discharge of the second battery cell is released, and/or, when the internal pressure or temperature of the second battery cell reaches a threshold value, the second pressure relief mechanism of the second battery cell is activated, and the discharge of the second battery cell is released.
  • the first battery cell and/or the second battery cell releases the discharge can act on at least one wall of the case body, so that the part of the case body opposite to the first pressure relief mechanism and/or the case body and the second pressure relief mechanism The opposite part of the pressure relief mechanism is destroyed, and the hollow inner cavity of the box is communicated with the first pressure relief mechanism and/or the second pressure relief mechanism to realize the discharge inside the first battery cell and/or the second battery cell It can be discharged into the discharge channel in a timely and effective manner, thereby further increasing the use safety of the battery.
  • At least one of the walls is provided with a first through hole configured to communicate with the exhaust passage to flow from the first battery upon actuation of the first battery cell and/or the second battery cell
  • the discharge of the single cell and/or the second battery cell enters the corresponding discharge channel through the first through hole, so that when the internal pressure or temperature of the first battery cell reaches a threshold value, the first leakage of the first battery cell is made.
  • the second pressure relief mechanism of the second battery cell When the pressure mechanism is actuated and the discharge inside the first battery cell is released, and/or when the internal pressure or temperature of the second battery cell reaches a threshold, the second pressure relief mechanism of the second battery cell is actuated , and when the discharge inside the second battery cell is released, the discharge discharged from the first battery cell and/or the second battery cell enters the hollow cavity of the box through the first through hole, realizing the first battery cell
  • the discharge inside the battery and/or the second battery cell can be discharged into the discharge channel in a timely and effective manner, thereby further increasing the use safety of the battery.
  • the battery further includes a thermal management component for containing a fluid to regulate the temperature of the first battery cell and the second battery cell, the thermal management component is disposed between the first battery cell and the second battery cell and the Between the at least one wall, the thermal management component is configured to be broken upon actuation of the first pressure relief mechanism and/or the second pressure relief mechanism to allow fluid to flow out, thus, the first battery cell and/or the second battery
  • the discharge of the single cell can enter the discharge channel through the damaged thermal management component, and the fluid flows out due to the damaged thermal management component, and then the temperature inside the battery is quickly reduced by the fluid, which is beneficial to alleviate the chain reaction of thermal failure and improve the battery. safety of use.
  • the thermal management component is provided with a second through-hole configured to communicate with the exhaust passage from the first battery upon actuation of the first pressure relief mechanism and/or the second pressure relief mechanism
  • the discharge of the single battery and/or the second battery cell enters the corresponding discharge channel through the second through hole, so that the discharge from the first battery cell and/or the second battery cell can quickly pass through the second through hole And smoothly enter the exhaust channel to improve the safety of the battery.
  • the second through hole communicates with the exhaust channel via the first through hole, so that the exhaust released by the first battery cell and/or the second battery cell can quickly and smoothly enter through the second through hole into the first through hole, and then into the exhaust channel to improve the safety of the battery.
  • a second aspect of the embodiments of the present application provides an apparatus, which includes the above-mentioned battery, and the battery is used to provide electrical energy.
  • the above-mentioned battery is used to provide electrical energy. Therefore, by limiting the area of the first pressure relief mechanism to be larger than the area of the second pressure relief mechanism, the first battery cell with a more severe failure reaction can pass through the first pressure relief mechanism with a larger area.
  • the pressure relief mechanism releases the pressure in a timely and effective manner, effectively alleviating the rapid temperature rise of the first battery cell, thereby effectively reducing the probability of a chain reaction caused by thermal failure of the first battery cell, and improving the overall use safety of the battery.
  • a third aspect of the embodiments of the present application provides a method for preparing a battery, which includes the following steps:
  • a first battery cell is configured, the first battery cell includes a first pressure relief mechanism for actuating to release the first battery cell when the internal pressure or temperature of the first battery cell reaches a threshold the internal pressure;
  • a second battery cell is configured, the second battery cell includes a second pressure relief mechanism for actuating to release the second battery cell when the internal pressure or temperature of the second battery cell reaches a threshold the internal pressure;
  • the energy density of the first battery cell is greater than that of the second battery cell, and the area of the first pressure relief mechanism is larger than the area of the second pressure relief mechanism.
  • the method for preparing a battery includes configuring a first battery cell with a higher energy density and a second battery cell with a lower energy density, and defining the first pressure relief mechanism and the first pressure relief mechanism of the configured first battery cell.
  • the area is larger than the area of the second pressure relief mechanism of the second battery cell.
  • a fourth aspect of the embodiments of the present application provides a device for preparing a battery, which includes:
  • the first battery cell configuration module is used to configure the first battery cell, the first battery cell includes a first pressure relief mechanism, and the first pressure relief mechanism is used when the internal pressure or temperature of the first battery cell reaches a threshold value actuating to relieve the internal pressure of the first battery cell;
  • the second battery cell configuration module is used to configure the second battery cell, the second battery cell includes a second pressure relief mechanism, and the second pressure relief mechanism is used for when the internal pressure or temperature of the second battery cell reaches a threshold value actuating to relieve the internal pressure of the second battery cell;
  • the energy density of the first battery cell is greater than that of the second battery cell, and the area of the first pressure relief mechanism is larger than the area of the second pressure relief mechanism.
  • a first battery cell with a higher energy density is configured through the first battery cell configuration module
  • a second battery cell with a lower energy density is configured through the second battery cell configuration module
  • the first pressure relief mechanism of the first battery cell and the area of the defined configuration are larger than the area of the second pressure relief mechanism of the second battery cell, when the first battery cell and the second battery cell are thermally
  • the failure reaction of the thermal failure of the first battery cell is more severe than that of the thermal failure of the second battery cell, and it can also make the first battery cell with a more severe failure reaction pass through the larger first pressure relief mechanism in a timely and effective manner.
  • the pressure is released, and at the same time, the second battery cell can also release the pressure in a timely and effective manner through the second pressure relief mechanism, which can effectively alleviate the rapid temperature rise of the first battery cell, thereby effectively reducing the chain caused by the thermal failure of the first battery cell.
  • the probability of reaction improves the overall safety of the battery.
  • Fig. 1 is the structural representation of the vehicle of the present application
  • FIG. 2 is a schematic structural diagram of a battery module according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a battery pack according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram 1 of a battery according to an embodiment of the present application.
  • Fig. 5 is the exploded view one of the battery of the embodiment of the present application.
  • FIG. 6 is a second structural schematic diagram of a battery according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a battery cell according to an embodiment of the present application.
  • FIG. 8 is a front view of a battery cell according to an embodiment of the present application.
  • FIG. 9 is a right side view of a battery cell according to an embodiment of the present application.
  • FIG. 10 is a top view of a battery cell according to an embodiment of the present application.
  • FIG. 11 is an exploded view 2 of the battery of the embodiment of the present application.
  • FIG. 12 is a third structural schematic diagram of the battery according to the embodiment of the present application.
  • FIG. 13a is a schematic structural diagram of a first battery cell according to an embodiment of the present application.
  • 13b is a schematic structural diagram of a second battery cell according to an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram 1 of a bottom wall according to an embodiment of the present application.
  • 16 is a second structural schematic diagram of a bottom wall according to an embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a thermal management component according to an embodiment of the present application.
  • FIG. 18 is a first structural schematic diagram of a bottom wall according to another embodiment of the present application.
  • 19 is a second structural schematic diagram of the bottom wall of another embodiment of the present application.
  • FIG. 20 is a schematic structural diagram of a thermal management component according to another embodiment of the present application.
  • a battery is a device that converts chemical energy into electrical energy, and is widely used in new energy vehicles, energy storage power stations and other fields.
  • An existing type of battery includes a box body, and a plurality of battery cells disposed in the box body, and the plurality of battery cells are connected in series and/or in parallel.
  • the plurality of battery cells include a first battery cell and a second battery cell, the energy density of the first battery cell is greater than the energy density of the second battery cell, and the first battery cell is provided with a first pressure relief
  • the first pressure relief mechanism is used to release the gas inside the first battery cell, thereby ensuring the safety of the first battery cell.
  • the second battery cell is provided with a second pressure relief mechanism, which is used for It is used to release the gas inside the second battery cell, thereby ensuring the safe use of the second battery cell.
  • the inventors of the present application have found that when a battery cell thermally fails, the failure reaction of the first battery cell is more severe than that of the second battery cell, that is, the high temperature generated by the first battery cell
  • the gas is much larger than the high-temperature gas generated by the second battery cell, so the temperature of the first battery cell is more likely to rise, thereby causing a chain reaction, further aggravating the thermal failure of the first battery cell, and causing the problem of battery safety.
  • the present application provides a battery, a device, a battery preparation method, and a battery preparation device.
  • a first pressure relief mechanism is provided, a second pressure relief mechanism is arranged on the second battery cell, and the area of the first pressure relief mechanism is limited to be larger than the area of the second pressure relief mechanism, so that the first battery cell with higher energy density
  • the internal pressure or temperature reaches the threshold, the internal pressure can be released in time through the first pressure relief mechanism with a larger area, thereby effectively alleviating the rapid temperature rise of the first battery cell and effectively reducing the thermal failure of the first battery cell.
  • the chain reaction caused by the battery improves the safety of the battery.
  • the embodiments of the present application provide a device and a battery.
  • the device provided by the present application includes a battery, and the battery is used to provide electrical energy.
  • the device provided by the present application is, for example, a mobile phone, a portable device, a notebook computer, a battery car, an electric vehicle, a ship, an aerospace Vehicles, electric toys, and power tools, etc., wherein the spacecraft are, for example, airplanes, rockets, space shuttles, spaceships, etc., and electric toys include, for example, stationary or mobile electric toys, such as game consoles, electric car toys, etc.
  • power tools include metal cutting power tools, grinding power tools, assembling power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers , impact drills, concrete vibrators and planers.
  • the battery described in this application is not limited to be applicable to the above-described electrical devices, but for the sake of brevity, the following embodiments are all described by taking an electric vehicle as an example.
  • FIG. 1 is a simplified schematic diagram of a vehicle 1 according to this embodiment.
  • the vehicle 1 may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle.
  • the battery 11 may be provided inside the vehicle 1 , for example, the battery 11 may be provided at the bottom or the front or rear of the vehicle 1 .
  • the battery 11 can be used for power supply of the vehicle 1 , for example, the battery can be used as an operating power source of the vehicle 1 .
  • the vehicle 1 may also include a controller 12 and a motor 13 , the controller 12 being used, for example, to control the battery 11 to supply power to the motor 13 .
  • the battery 11 can be used for starting, navigating, etc. of the vehicle 1 , and of course, the battery 11 can also be used to drive the vehicle 1 to provide driving power for the vehicle 1 instead of or partially instead of fuel or natural gas.
  • the battery 11 mentioned in this embodiment may be a battery module as shown in FIG. 2 or a battery pack as shown in FIG. 3 , etc.
  • the basic structural unit of a battery module and a battery pack is a battery cell, a plurality of battery cells They can be connected together in series and/or in parallel via electrode terminals for application to various electrical devices.
  • the battery module is to protect the battery cells from external shock, heat, vibration, etc., and the battery module is formed by electrically connecting a certain number of battery cells together and putting them into a frame.
  • the battery pack is the final state of the battery system loaded into an electric vehicle.
  • Most of the current battery packs are made by assembling various control and protection systems such as battery management systems and thermal management components on one or more battery modules.
  • the layer of the battery module can be omitted, that is, the battery pack is directly formed from the battery cells. This improvement makes the weight energy density and volume energy density of the battery system increase while the number of components is significantly reduced.
  • the battery 11 of the present application includes: a first battery cell 111 and a second battery cell 112 , the energy density of the first battery cell 111 is greater than that of the second battery cell 112 ,
  • the first battery cell 111 includes a first pressure relief mechanism 1111 for actuating to release the inside of the first battery cell 111 when the internal pressure or temperature of the first battery cell 111 reaches a threshold value pressure
  • the second battery cell 112 includes a second pressure relief mechanism 1121 for actuating to relieve the second battery cell 112 when the internal pressure or temperature of the second battery cell 112 reaches a threshold
  • the internal pressure of the first pressure relief mechanism 1111 is larger than that of the second pressure relief mechanism 1121 .
  • the first pressure relief mechanism 1111 refers to an element or component that can be actuated to release the inner pressure and/or the inner substance when the inner pressure or inner temperature of the first battery cell 111 reaches a predetermined threshold.
  • the first pressure relief mechanism 1111 may specifically take the form of an explosion-proof valve, a gas valve, a pressure relief valve or a safety valve, etc., and may specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the first battery cell 111 has a When the internal pressure or temperature reaches a predetermined threshold, the first pressure relief mechanism 1111 performs an action or the weak structure provided in the first pressure relief mechanism 1111 is destroyed, thereby forming an opening or channel for the internal pressure relief.
  • the second pressure relief mechanism 1121 refers to an element or component that can be actuated to release the inner pressure and/or the inner substance when the inner pressure or inner temperature of the second battery cell 112 reaches a predetermined threshold.
  • the second pressure relief mechanism 1121 may specifically take the form of an explosion-proof valve, an air valve, a pressure relief valve or a safety valve, etc., and may specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the second battery cell 112 has a When the internal pressure or temperature reaches a predetermined threshold, the second pressure relief mechanism 1121 performs an action or the weak structure provided in the second pressure relief mechanism 1121 is destroyed, thereby forming an opening or a channel for releasing the internal pressure.
  • the threshold referred to in this application can be a pressure threshold or a temperature threshold, and the design of the threshold varies according to different design requirements, for example, it can be based on the internal pressure or internal temperature of the first battery cell 111 that is considered to be dangerous or at risk of runaway
  • the threshold value is designed or determined according to the value, and, for example, the threshold value may depend on the materials used in one or more of the positive pole piece, the negative pole piece, the electrolyte and the separator in the first battery cell 111; for example, The threshold value may be designed or determined based on the internal pressure or internal temperature value of the second battery cell 112 that is considered to be dangerous or at risk of runaway, and may depend, for example, on the positive pole piece in the second battery cell 112 , one or more of the materials used in the negative pole piece, the electrolyte and the separator.
  • the “actuation” mentioned in this application means that the first pressure relief mechanism 1111 is activated or activated to a certain state, so that the internal pressure of the first battery cell 111 can be released, and the second pressure relief mechanism 1121 is actuated or activated to a certain state, so that the internal pressure of the second battery cell 112 can be released.
  • the action generated by the first pressure relief mechanism 1111 may include, but is not limited to, at least a part of the first pressure relief mechanism 1111 is ruptured, broken, torn or opened, and the like.
  • the first battery cell 111 can be depressurized under controllable pressure or temperature, so as to avoid potentially more serious accidents.
  • the emissions from the first battery cell 111 mentioned in this application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode sheets, fragments of separators, high-temperature and high-pressure gas generated by the reaction, and flames, and many more.
  • the high-temperature and high-pressure discharge is discharged toward the direction of the first battery cell 111 where the first pressure relief mechanism 1111 is provided, and may more specifically be discharged in the direction toward the area where the first pressure relief mechanism 1111 is actuated.
  • the force and destructive force can be great, possibly even enough to break through one or more components in that direction.
  • the action generated by the second pressure relief mechanism 1121 may include, but is not limited to: at least a part of the second pressure relief mechanism 1121 is ruptured, broken, torn or opened, and the like.
  • the second pressure relief mechanism 1121 is actuated, the high-temperature and high-pressure substances inside the second battery cells 112 are discharged from the actuated part as a discharge. In this way, the second battery cell 112 can be depressurized under controlled pressure or temperature conditions, thereby avoiding a potentially more serious accident.
  • the emissions from the second battery cell 112 mentioned in this application include but are not limited to: electrolyte, dissolved or split positive and negative electrode sheets, fragments of separators, high-temperature and high-pressure gas generated by the reaction, flames, and many more.
  • the high-temperature and high-pressure discharge is discharged toward the direction of the second battery cell 112 in which the second pressure relief mechanism 1121 is provided, and may be more specifically discharged in the direction toward the area where the second pressure relief mechanism 1121 is actuated.
  • the force and destructive force can be great, possibly even enough to break through one or more components in that direction.
  • the first battery cell 111 and the second battery cell 112 in this application may be lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc.
  • the embodiment is not limited to this.
  • the first battery cell 111 and the second battery cell 112 may be in the form of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which are not limited in this embodiment of the present application.
  • the first battery cells 111 and the second battery cells 112 are generally divided into three types according to the packaging method: cylindrical battery cells, square-shaped battery cells, and soft-pack battery cells, which are not limited in the embodiments of the present application. .
  • the first battery cell 111 generally includes an electrode assembly (not shown) and an electrolyte (not shown).
  • the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, a
  • the first battery cell 111 mainly relies on the movement of metal ions between the positive electrode and the negative electrode to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, and the current collector without the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer, The current collector not coated with the positive electrode active material layer was used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganate.
  • the negative pole piece includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, and the current collector without the negative electrode active material layer is protruded from the current collector that has been coated with the negative electrode active material layer, The current collector not coated with the negative electrode active material layer was used as the negative electrode tab.
  • the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon.
  • the number of positive tabs is multiple and stacked together, and the number of negative tabs is multiple and stacked together.
  • the material of the diaphragm can be polypropylene (referred to as PP for short) or polyethylene (referred to as PE for short).
  • the electrode assembly may be a wound structure or a laminated structure, and the number of electrode assemblies may be one or more, which is not specifically limited in this embodiment of the present application.
  • the first battery cell 111 also includes a casing 1114, the electrode assembly and the electrolyte are encapsulated in the casing 1114, the casing 1114 can be a hollow cuboid, a cube or a cylinder, and the material of the casing 1114 can be aluminum or steel and Its alloy can also be plastic material or aluminum plastic film.
  • the casing 1114 is also provided with a positive electrode terminal 1112 and a negative electrode terminal 1113, the positive electrode tab is electrically connected to the positive electrode terminal 1112, and the negative electrode tab is electrically connected to the negative electrode terminal 1113 to output electrical energy.
  • the casing 1114 is also provided with the above-mentioned first pressure relief mechanism 1111 , and the first pressure relief mechanism 1111 can be arranged at any position of the casing 1114 , for example, the first pressure relief mechanism 1111 can be arranged on the top, bottom or side of the casing 1114
  • the first pressure relief mechanism 1111 can also be provided between the positive electrode terminal 1112 and the negative electrode terminal 1113, which is not specifically limited in this application, as long as the internal pressure of the first battery cell 111 can be released.
  • the structure of the second battery cell 112 is the same as that of the first battery cell 111 , and details are not described herein again.
  • the ratio of the energy density E 1 of the first battery cell 111 to the energy density E 2 of the second battery cell 112 satisfies: 1.26 ⁇ E 1 /E 2 ⁇ 2.14, where the energy density refers to The energy released by the battery per unit mass or unit volume, that is, the gravimetric energy density or the volumetric energy density
  • the first battery cell 111 is, for example, a ternary lithium battery, specifically, for example, a nickel-cobalt-manganate lithium-ion battery or For nickel-cobalt-aluminate lithium battery
  • the second battery cell 112 is, for example, a lithium iron phosphate battery or a lithium cobalt oxide battery.
  • the energy density of the first battery cell 111 is greater than the energy density of the second battery cell 112 .
  • the thermal failure reaction of the first battery cell 1115 is more severe than that of the second battery cell 112 , and at the same time
  • the arrangement of the first battery cell 111 and the second battery cell 112 is beneficial to reduce the chain reaction of thermal failure, that is, it is beneficial to slow down the spread of thermal diffusion and further improve the use safety of the battery 11 .
  • the ratio of the area A 1 of the first pressure relief mechanism 1111 to the area A 2 of the second pressure relief mechanism 1121 satisfies: 1.5 ⁇ A 1 /A 2 ⁇ 4, so that the first battery cell 111 Both the battery and the second battery cell 112 can release energy in a timely and effective manner to improve the safety of the battery.
  • a first pressure relief mechanism 1111 is provided on the first battery cell 111, so that when the internal pressure or temperature of the first battery cell 111 reaches a threshold value, the first battery cell 111 can be released Internal pressure;
  • a second pressure relief mechanism 1121 is provided on the second battery cell 112, so that when the internal pressure or temperature of the second battery cell 112 reaches a threshold, the second battery cell 112 can also release the internal pressure; the first The energy density of the battery cell 111 is greater than that of the second battery cell 112, and the failure reaction of the first battery cell 111 to thermal failure is more severe than that of the second battery cell 112.
  • the area of the mechanism 1111 is larger than the area of the second pressure relief mechanism 1121, so that the first battery cell 111 with a more severe failure reaction can release the pressure in time and effectively through the larger area of the first pressure relief mechanism 1111, effectively reducing the pressure caused by the first pressure relief mechanism 1111.
  • the probability that the battery cell 111 cannot release the chain reaction caused by the internal pressure in time improves the overall use safety of the battery 11 .
  • the first battery cells 111 and the second battery cells 112 are alternately arranged in an arrangement of n first battery cells 111 and m second battery cells 112 , where n ⁇ 1, m ⁇ 1, and both n and m are integers.
  • n and m may take the same value or different values.
  • a first heat insulating member 114 is further disposed between two adjacent first battery cells 111 , when one of the first battery cells 111 When thermal failure occurs, the first battery cell 111 adjacent to the first battery cell 111 where thermal failure occurs can be effectively prevented from thermal failure by the first heat insulating member 114 .
  • a second heat insulating member 115 is further disposed between adjacent second battery cells 112 , and when one of the second battery cells 112 thermally fails, the second heat insulating member 115 can effectively prevent the The second battery cell 112 adjacent to the second battery cell 112 in which the thermal failure occurred thermally fails.
  • a third heat insulating member 116 is further disposed between the adjacent first battery cells 111 and the second battery cells 112 .
  • the three heat shields 116 effectively prevent the thermal failure of the second battery cell 112 adjacent to the first battery cell 111 where thermal failure occurs, and vice versa.
  • at least one of the first insulator 114 , the second insulator 115 , and the third insulator 116 is included in the battery 11 .
  • the first thermal insulation member 114, the second thermal insulation member 115, and the third thermal insulation member 116 may be at least one of foam, rubber, thermal insulation cotton, and aerogel thermal insulation pads.
  • the first thermal insulation member 114 , the second thermal insulation member 115 and the third thermal insulation member 116 may be configured as a frame structure. Further, the first thermal insulation member 114 , the second thermal insulation member 116 115 and the third heat insulating member 116 further comprise a filling member for filling the hollow part of the word frame, the filling member has elasticity, wherein the filling member is selected from foam, rubber, thermal insulation cotton, and aerogel thermal insulation pads. at least one.
  • the battery 11 of the embodiment of the present application further includes a discharge passage 117, the discharge passage 117 is disposed opposite the first pressure relief mechanism 1111 and/or the second pressure relief mechanism 1121, and the discharge passage 117 is configured to be actuated when the first pressure relief mechanism 1111 is actuated. Emissions from the first battery cells 111 are collected at the time of operation, and/or emissions from the second battery cells 112 are collected when the second pressure relief mechanism 1121 is actuated.
  • the discharge channel when the internal pressure and temperature of the first battery cell 111 and the second battery cell 112 reach the threshold value, the pressure inside the first battery cell 111 and the second battery cell 112 can be released in time, thereby making the battery 11 Safer to use.
  • the discharge passage 117 is disposed opposite to the first pressure relief mechanism 1111, and the discharge passage 117 is configured to collect the discharge from the first battery cell 111 when the first pressure relief mechanism 1111 is actuated
  • the drain passage 117 is disposed opposite the second pressure relief mechanism 1121 , and the drain passage 117 is configured to collect exhaust from the second battery cell 112 when the second pressure relief mechanism 1121 is actuated.
  • the discharge channel 117 is disposed opposite to the first pressure relief mechanism 1111 of the first battery cell 111 and the second pressure relief mechanism 1121 of the second battery cell 112 at the same time.
  • the channel 117 is configured to collect emissions from the first battery cell 111 and the second battery cell 112, correspondingly, the first battery cell 111 when the first pressure relief mechanism 1111 and the second pressure relief mechanism 1121 are actuated
  • the first pressure relief mechanism 1111 of the second battery cell 112 is also arranged in the middle position as shown in FIG.
  • each discharge passage 117 is isolated from each other, and the first pressure relief mechanism 1111 and the second pressure relief mechanism 1121 are respectively arranged opposite to different discharge passages 117 .
  • the first battery cells 111 and the second battery cells 112 are arranged in a row, the length and width of the first battery cells 111 and the second battery cells 112 may be approximately the same, and the thicknesses may be the same, and may be different, and the distance between the first pressure relief mechanism 1111 on the first battery cell 111 and its side is a quarter of the width of the first battery cell 111, and the second pressure relief mechanism on the second battery cell 112
  • the distance between the mechanism 1121 and its side is a quarter of the width of the second battery cell 112 , and the first pressure relief mechanism 1111 and the second pressure relief mechanism 1121 are not arranged collinearly, that is, the first pressure relief mechanism 1111 on the first battery cell 111 .
  • a pressure relief mechanism 1111 and a second pressure relief mechanism 1121 on the second battery cell 112 are staggered in the arrangement direction of the first battery cell 111 and the second battery cell 112. In this way, the first battery cell 111 When the internal pressure or temperature reaches the threshold value, the discharge inside the first battery cell 111 is discharged from one of the discharge channels 117 , and when the internal pressure or temperature of the second battery cell 112 reaches the threshold value, the discharge material inside the second battery cell 112 is discharged. The discharge is discharged from one of the discharge channels 117 , so that the discharges of the first battery cell 111 and the second battery cell 112 can be discharged to the outside of the battery 11 in a timely and effective manner, thereby improving the use safety of the battery 11 .
  • the distance between the first pressure relief mechanism 1111 on the first battery cell 111 and the side of the first pressure relief mechanism 1111 may be equal to the width of the first battery cell 111 .
  • the distance from the second pressure relief mechanism 1121 on the second battery cell 112 to one side of the second battery The first pressure relief mechanism 1111 and the second pressure relief mechanism 1121 on the second battery cell 112 are also not arranged collinearly, that is, the first pressure relief mechanism 1111 and the second battery cell on the first battery cell 111
  • the second pressure relief mechanisms 1121 on the 112 are staggered in the arrangement direction of the first battery cells 111 and the second battery cells 112 .
  • first battery cells 111 there are at least two first battery cells 111 , and the first pressure relief mechanisms 1111 of two adjacent first battery cells 111 are respectively arranged opposite to different discharge channels 117 , so that different discharge channels 117 can be realized.
  • the first battery cells 111 respectively release the emissions through different discharge channels 117, so that the emissions of the first battery cells 111 can be discharged to the outside of the battery 11 in a timely and effective manner, and the first battery cells 111 can be effectively reduced.
  • the thermal failure of the second battery cell 112 leads to the thermal failure of the second battery cell 112 , thereby delaying the chain reaction and improving the use safety of the battery 11 .
  • the second battery cells 112 there are at least two second battery cells 112 , and the second pressure relief mechanisms 1121 of two adjacent second battery cells 112 are respectively disposed opposite to different discharge channels 117 .
  • different second battery cells 112 release the emissions through different discharge channels 117 respectively, so that the emissions of the second battery cells 112 can be discharged to the outside of the battery 11 in a timely and effective manner, and the second battery cells can be effectively reduced.
  • the thermal failure of the body 112 leads to the thermal failure of the first battery cell 111 , thereby delaying the chain reaction and improving the use safety of the battery 11 .
  • the battery 11 further includes a box body 113 , and the box body 113 has a plurality of walls, and the plurality of walls are used to enclose the first battery cell 111 and the second battery In the accommodating cavity of the cell 112 , at least one of the plurality of walls has a hollow inner cavity for forming the discharge channel 117 .
  • the case 113 may be sealed or unsealed.
  • the box body 113 includes a top wall (not shown) at the top, a bottom wall 1131 at the bottom, and side walls 1132 around the bottom wall 1131 .
  • the top wall and the bottom wall 1131 are respectively covered on the side walls 1132
  • the openings at both ends are further enclosed with the side wall 1132 to form a accommodating cavity.
  • the side wall 1132 may be formed by four sub-side walls connected end to end, or may be an integral piece.
  • the box body 113 is used to protect the first battery cell 111 and the second battery cell 112 placed in the accommodating cavity, and at least one of the plurality of walls of the box body 113 is provided with a hollow that forms a discharge channel 117
  • the inner cavity can facilitate the arrangement of the first pressure relief mechanism 1111 of the first battery cell 111 and the second pressure relief mechanism 1121 of the second battery cell 112 and the corresponding hollow inner cavity, thereby making the first battery cell 111
  • the discharge of the first battery cell 111 can be discharged into the hollow cavity
  • the internal pressure or temperature of the second battery cell 112 reaches the threshold, the discharge of the second battery cell 112 can be discharged. It is discharged into the hollow inner cavity, thereby effectively reducing the risk of combustion and explosion, and improving the use safety of the battery 11 .
  • the bottom wall 1131 is used to support the first battery cell 111 and the second battery cell 112, the bottom wall 1131 has a hollow inner cavity, correspondingly, the first pressure relief mechanism 1111 of the first battery cell 111 and the second battery
  • the second pressure relief mechanisms 1121 of the cells 112 are all disposed at the bottom of the respective housings 1114 . In this way, the discharge in the first battery cell 111 is released downward, and enters the hollow cavity at the bottom through the first pressure relief mechanism 1111, and the discharge in the second battery cell 112 is released downward and passes through The second pressure relief mechanism 1121 enters into the hollow inner cavity at the bottom.
  • the battery 11 is arranged in such a way that, after the battery 11 is placed in the battery 11 compartment of the vehicle 1, the battery 11 releases emissions to the bottom of the vehicle 1, rather than to the passenger compartment located above the battery 11 compartment, and further The use safety of the battery 11 is further increased.
  • the first pressure relief mechanism 1111 and the second pressure relief mechanism of the first battery cell 111 is configured to be able to communicate with the corresponding discharge passage 117 .
  • the connection between the first pressure relief mechanism 1111 of the first battery cell 111 and the hollow cavity forming the discharge channel 117 on the box body 113 , and the second pressure relief mechanism 1121 of the second battery cell 112 and the box body 113 The communication mode of the hollow inner cavity forming the discharge channel 117 is described by the following two embodiments.
  • the communication mode of the first pressure relief mechanism 1111 of the first battery cell 111 and the hollow inner cavity, and the communication mode of the second pressure relief mechanism 1121 of the second battery cell 112 and the hollow inner cavity are defined.
  • At least one wall of the casing 113 of the battery 11 is configured to be broken upon actuation of the first pressure relief mechanism 1111 to allow the exhaust from the first battery cells 111 to pass through the at least one wall into discharge passage 117 .
  • at least one wall of the box body 113 is provided with a hollow inner cavity, which may be the above-mentioned top wall, bottom wall 1131 or side wall 1132, and the first pressure relief of the box body 113 and the first battery cell 111
  • the opposite part of the mechanism 1111 has a complete wall surface in the first pressure relief mechanism 1111 , that is, the part of the box 113 opposite to the first pressure relief mechanism 1111 of the first battery cell 111 when the first pressure relief mechanism 1111 is not actuated There is no pore structure that communicates with the hollow lumen.
  • the first The discharge released by the battery cells 111 may act on at least one wall of the case 113, so that the portion of the case 113 opposite to the pressure relief mechanism of the first battery cell 111 is damaged (broken or ruptured), so that the case 113 is damaged (broken or ruptured)
  • the inside of the hollow inner cavity of 113 is communicated with the first pressure relief mechanism 1111 , so that the discharge inside the first battery cell 111 can be discharged into the discharge channel 117 in a timely and effective manner.
  • At least one wall of the casing 113 of the battery 11 is configured to be broken upon actuation of the second pressure relief mechanism 1121 to allow exhaust from the second battery cell 112 to pass through the at least one wall into the exhaust passage 117.
  • the communication method between the second pressure relief mechanism 1121 of the second battery cell 112 and the hollow channel is the same as the communication method between the first pressure relief mechanism 1111 of the first battery cell 111 and the hollow channel, and is not described here. Repeat.
  • At least one wall of the casing 113 of the battery 11 is provided with a first through hole 1133, which may be the above-mentioned top wall, bottom wall 1131 or side wall 1132, and the first through hole 1133 is configured to be connected with the
  • the discharge passage 117 communicates so that the discharge from the first battery cell 111 enters the discharge passage 117 through the first through hole 1133 when the first pressure relief mechanism 1111 is actuated, and when the internal pressure or temperature of the first battery cell 111 reaches threshold, so that the pressure relief mechanism of the first battery cell 111 is actuated, and when the discharge inside the first battery cell 111 is released, the discharge discharge from the first battery cell 111 enters the tank through the first through hole 1133
  • the inside of the hollow inner cavity of the body 113 so that the discharge inside the first battery cell 111 can be discharged into the discharge channel 117 in a timely and effective manner.
  • At least one wall of the casing 113 of the battery 11 is provided with a first through hole 1133 , which may be the above-mentioned top wall, bottom wall 1131 or side wall 1132 , and the first through hole 1133 is configured to communicate with the discharge channel 117 , so that the discharge from the second battery cell enters the discharge channel 117 through the first through hole 1133 when the second pressure relief mechanism 1121 is actuated.
  • This communication mode is the same as the communication mode between the first pressure relief mechanism 1111 of the first battery cell 111 and the hollow channel, and will not be repeated here.
  • the battery 11 further includes a thermal management part 118 for containing a fluid to regulate the temperature of the first battery cell 111 and the second battery cell 112 , and the thermal management part 118 is provided in the first battery cell 111 and the second battery cell 112
  • the temperature of the first battery cell 111 and the second battery cell 112 can be adjusted by arranging the thermal management component 118 between the at least one wall and the first battery cell 111 and the second battery cell 112 It can charge and discharge more efficiently and safely.
  • the fluid here may be liquid or gas, and adjusting the temperature refers to heating or cooling the first battery cell 111 and the second battery cell 112 .
  • the thermal management part 118 is used for containing a cooling fluid to lower the temperature of the first battery cell 111 and the second battery cell 112,
  • the thermal management component 118 may also be called a cooling component, a cooling system or a cooling plate, etc., and the fluid contained therein may also be called a cooling medium or a cooling fluid, more specifically, a cooling liquid or a cooling gas.
  • the thermal management component 118 may also be used for containing a heating fluid to heat up the battery cells 111 , which is not limited in the embodiment of the present application.
  • the fluid can be circulated for better temperature regulation.
  • the fluid may be water, a mixture of water and ethylene glycol, or air, or the like.
  • the thermal management component 118 is configured to be destroyed (broken or ruptured) upon actuation of the first pressure relief mechanism 1111 and/or the second pressure relief mechanism 1121 to allow fluid flow. That is, when the internal pressure or temperature of the first battery cell 111 and the second battery cell 112 reaches the threshold and need to release high-temperature and high-pressure gas, the thermal management component 118 utilizes the emission released by the first battery cell 111 and the second battery cell 112 The material acts on the thermal management part 118, and then destroys the thermal management part 118. The emissions from the first battery cell 111 and the second battery cell 112 can enter the discharge channel 117 (ie the box 113) through the destroyed thermal management part 118. the hollow lumen).
  • the outflowing fluid such as cooling liquid
  • the thermal management component 118 is, for example, a water cooling plate, and a fluid channel is provided in the water cooling plate, one end of the fluid channel forms a water inlet, and the other end of the water flow channel forms a water outlet.
  • the ambient temperature of the first battery cells 111 and the second battery cells 112 is adjusted by adjusting the water temperature in the water cooling plate, so that the first battery cells 112 can be adjusted.
  • the charge and discharge of the battery 111 and the second battery cell 112 work within a relatively reasonable temperature range, which improves the charge efficiency and discharge efficiency of the battery 11 .
  • the first battery cell 111 thermally fails, or the second battery cell 112 thermally fails, or the first battery cell 111 and the second battery cell 112 thermally fail simultaneously, the first battery cell 111 and the second battery cell 112 thermally fail.
  • the internal pressure released by the second battery cell 112 damages the water-cooling plate, thereby causing the water inside the water-cooling plate to vaporize, thereby absorbing the heat of the high-temperature gas released by the first battery cell 111 and the second battery cell 112, and further reducing the first battery.
  • the probability of combustion and explosion of the single cell 111 and the second battery cell 112 improves the use safety of the battery 11 .
  • the thermal management component 118 is provided with a second through hole 1181 configured to communicate with the exhaust passage 117 for actuation at the first pressure relief mechanism 1111 and/or the second pressure relief mechanism 1121 At this time, the discharge from the first battery cell 111 and/or the second battery cell 112 enters the corresponding discharge channel 117 through the second through hole 1181 .
  • the second through hole 1181 may be set to be greater than or equal to the area of the first pressure relief mechanism 1111 provided on the first battery cell 111 , and/or greater than or equal to the area of the second pressure relief mechanism 1111 provided on the second battery cell 112 . area of the pressing mechanism 1121.
  • the first pressure relief mechanism 1111 of the first battery cell 111 is actuated, and the discharge inside the first battery cell 111 is released
  • the first The emissions released by the battery cells 111 can quickly and smoothly enter the exhaust passage 117 (ie, the hollow inner cavity of the case 113 ) through the second through holes 1181 , so that the emissions inside the first battery cells 111 can be released in time. Efficient discharge into discharge passage 117 .
  • the first The emissions released by the second battery cells 112 can quickly and smoothly enter the exhaust channel 117 (ie, the hollow cavity of the case 113 ) through the second through holes 1171 , so that the emissions inside the second battery cells 112 can Timely and effective discharge into the discharge channel 117 .
  • the second through hole 1181 is connected to the discharge passage through the first through hole 1133
  • the channel 117 is connected, and the emissions released by the first battery cell 111 and/or the second second battery cell 112 enter the exhaust channel 117 (ie the box 113 ) through the second through hole 1181 and the first through hole 1133 in sequence.
  • the discharge inside the first battery cell 111 and the second battery cell 112 can be effectively discharged into the discharge channel 117 in time.
  • the second through holes 1181 need to be in one-to-one correspondence with the first through holes 1133 .
  • two discharge channels 117 are provided on the bottom wall 1131 as shown in FIG. 15 .
  • the bottom wall 1131 of FIG. 16 is provided with a plurality of first through holes 1133 that communicate with the two discharge channels 117 .
  • the thermal management component 118 of FIG. 17 is provided with a plurality of first through holes 1133 that communicate with each other.
  • a corresponding second through hole 1181 Exemplarily, a discharge channel 117 is provided on the bottom wall 1131 as shown in FIG.
  • a plurality of second through holes 1181 corresponding to the first through holes 1133 one-to-one are provided on the thermal management component 118 as shown in FIG. 20 .
  • the battery 11 of the embodiment of the present application is described above with reference to FIG. 1 to FIG. 20 , and the manufacturing method and equipment of the battery 11 of the embodiment of the present application will be described below.
  • the parts not described in detail reference may be made to the foregoing embodiments.
  • the present embodiment provides a method for preparing a battery, which includes the following steps:
  • the first battery cell 111 is configured, and the first battery cell 111 includes a first pressure relief mechanism 1111 for actuating to release when the internal pressure or temperature of the first battery cell 111 reaches a threshold value the internal pressure of the first battery cell 111;
  • the second battery cell 112 is configured, and the second battery cell 112 includes a second pressure relief mechanism 1121 for actuating to release when the internal pressure or temperature of the second battery cell 112 reaches a threshold value the internal pressure of the second battery cell 112;
  • the energy density of the first battery cell 111 is greater than that of the second battery cell 112 , and the area of the first pressure relief mechanism 1111 is larger than the area of the second pressure relief mechanism 1121 .
  • a first battery cell 111 with a higher energy density and a second battery cell 112 with a lower energy density are configured, and the first leakage of the configured first battery cell 111 is limited.
  • the failure reaction of the second battery cell 112 is more severe than that of the thermal failure of the second battery cell 112, and the first battery cell 111 with a more severe failure reaction can release the pressure in a timely and effective manner through the first pressure relief mechanism 1111 with a larger area, and at the same time , so that the second battery cell 112 can effectively release the pressure even though the second pressure relief mechanism 1121 can effectively relieve the rapid temperature rise of the first battery cell 111, thereby effectively reducing the chain caused by the thermal failure of the first battery cell 111.
  • the probability of reaction is improved
  • the embodiment of the present application provides a preparation device for a battery, which includes:
  • the first battery cell configuration module is used to configure the first battery cell 111 , the first battery cell 111 includes a first pressure relief mechanism 1111 , and the first pressure relief mechanism 1111 is used for the internal pressure of the first battery cell 111 . Or actuated to release the internal pressure of the first battery cell 111 when the temperature reaches a threshold;
  • the second battery cell configuration module is used to configure the second battery cell 112 , the second battery cell 112 includes a second pressure relief mechanism 1121 , and the second pressure relief mechanism 1121 is used for the internal pressure of the second battery cell 112 Or actuated to release the internal pressure of the second battery cell 112 when the temperature reaches a threshold;
  • the energy density of the first battery cell 111 is greater than that of the second battery cell 112 , and the area of the first pressure relief mechanism 1111 is larger than the area of the second pressure relief mechanism 1121 .
  • the first battery cell 111 with higher energy density is configured through the first battery cell configuration module
  • the second battery cell with lower energy density is configured through the second battery cell configuration module 112
  • the first pressure relief mechanism 1111 of the first battery cell 111 and the area of the first pressure relief mechanism 1121 of the second battery cell 112 are defined to be larger than the area of the second pressure relief mechanism 1121 of the second battery cell 112.
  • the larger first pressure relief mechanism 1111 can release the pressure in a timely and effective manner, and at the same time, the second battery cell 112 can also release the pressure in a timely and effective manner through the second pressure relief mechanism 1121, thereby effectively alleviating the rapid temperature of the first battery cell 111. , thereby effectively reducing the probability of a chain reaction caused by thermal failure of the first battery cell 111 , and improving the overall use safety of the battery 11 .
  • the battery preparation device provided in this embodiment can be applied to the battery preparation method in the above embodiment, that is, the battery preparation method in the above embodiment can be specifically implemented by the battery preparation device in this embodiment.
  • the battery 11, the device, the battery preparation method and the battery preparation device provided by the present application have a lower specific energy density by limiting the area of the first pressure relief mechanism 1111 of the first battery cell 111 with a higher energy density
  • the area of the second pressure relief mechanism 1121 of the second battery cell 112 is increased, so that both the first battery cell 111 and the second battery cell 112 can release the pressure in a timely and effective manner, thereby improving the overall use safety of the battery 11 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

本申请提供一种电池、装置、电池的制备方法以及制备装置，涉及储能技术领域，用于解决电池的使用安全差的问题，该电池包括第一电池单体和第二电池单体，第一电池单体包括第一泄压机构，第二电池单体包括第二泄压机构，其中，第一电池单体的能量密度大于第二电池单体的能量密度，且第一泄压机构的面积大于第二泄压机构的面积。该装置包括上述电池。该电池的制备方法包括如下步骤：配置第一电池单体；配置第二电池单体。该电池的制备装置包括：第一电池单体配置模块以及第二电池单体配置模块，本申请提供的电池、装置、电池的制备方法以及制备装置用于提升电池的使用安全性。

Description

电池、装置、电池的制备方法以及制备装置 技术领域
本申请涉及储能技术领域，尤其涉及一种电池、装置、电池的制备方法以及制备装置。
背景技术
节能减排是汽车产业可持续发展的关键。在这种情况下，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。而对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。在电池技术的发展中，除了提高电池的性能外，安全问题也是一个不可忽视的问题。如果电池的安全问题不能保证，那该电池就无法使用。因此，如何增强电池的安全性，是电池技术中一个亟待解决的技术问题。
发明内容
鉴于上述问题，本申请实施例提供一种电池、装置、电池的制备方法以及电池的制备装置，以提升电池的使用安全性。
为了实现上述目的，本申请实施例提供如下技术方案：
本申请实施例的第一方面提供一种电池，包括：
第一电池单体，第一电池单体包括第一泄压机构，第一泄压机构用于在第一电池单体的内部压力或温度达到阈值时致动以泄放第一电池单体的内部压力；
第二电池单体，第二电池单体包括第二泄压机构，第二泄压机构用于在第二电池单体的内部压力或温度达到阈值时致动以泄放第二电池单体的内部压力；
其中，第一电池单体的能量密度大于第二电池单体的能量密度，且第一泄压机构的面积大于第二泄压机构的面积。
与现有技术相比，本申请实施例提供的电池具有如下优点：
本申请实施例提供的电池，在第一电池单体上设置第一泄压机构，能够使得第一电池单体的内部压力或温度达到阈值时，第一电池单体可以释放内部压力；在第二电池单体上设置第二泄压机构，能够使得第二电池单体的内部压力或温度达到阈值时，第二电池单体也可以释放内部压力；第一电池单体的能量密度大于第二电池单体的能量密度，第一电池单体热失效的失效反应比第二电池单体热失效的失效反应更加剧烈，通过限定第一泄压机构的面积大于第二泄压机构的面积，可以使得失效反应更加剧烈的第一电池单体能够通过面积更大的第一泄压机构及时有效的释放压力，有效缓解第一电池单体的急速温升，进而有效降低第一电池单体热失效引发的连锁反应的概率，提升电池整体的使用安全性。
在一些实施方式中，第一泄压机构的面积A1与第二泄压机构的面积A2的比值满 足：1.5≤A1/A2≤4，如此，能够使得第一电池单体和第二电池单体均可以及时有效的释放压力，提升电池的使用安全性。
在一些实施方式中，第一电池单体的能量密度E1与第二电池单体的能量密度E2的比值满足：1.26≤E1/E2≤2.14，如此，可以在保证电池的使用安全性的同时，提升电池的容量。
在一些实施方式中，第一电池单体和第二电池单体以n个第一电池单体、m个第二电池单体的排布方式交替排列，其中n≥，m≥1，如此，能量密度不同的第一电池单体和第二电池单体间隔设置，有利于缓减热扩散的蔓延，进而提升电池的使用安全性。
在一些实施方式中，电池还包括排放通道，排放通道与第一泄压机构和/或第二泄压机构相对设置，且排放通道被配置为在第一泄压机构致动时收集来自第一电池单体的排放物，和/或，在第二泄压机构致动时收集来自第二电池单体的排放物。设置排放通道可以使得第一电池单体和第二电池单体内部压力和温度达到阈值时，及时将第一电池单体和第二电池单体内部的压力释放，进而使得电池使用更加安全。
在一些实施方式中，排放通道设置为至少两条，各排放通道相互隔离设置，第一泄压机构与第二泄压机构分别与不同的排放通道相对设置，第一电池单体和第二电池单体的排放物均可以及时有效的排放到电池的外部，且有效降低了第一电池单体和第二电池单体释放的固体物质堵塞排放通道的可能性，提高了电池的使用安全性。
在一些实施方式中，第一电池单体设置为至少两个，相邻两个第一电池单体的第一泄压机构分别与不同的排放通道相对设置，如此，可以实现不同的第一电池单体分别通过不同的排放通道释放排放物，进而使得第一电池单体的排放物及时有效的排放到电池的外部，而且，可以有效降低第一电池单体的热失效导致与其相邻的第一电池单体的热失效的概率，进而有利于缓解热失效的连锁反应，提升电池的使用安全性。
在一些实施方式中，第二电池单体设置为至少两个，相邻两个第二电池单体的第二泄压机构分别与不同的排放通道相对设置，如此，可以实现不同的第二电池单体分别通过不同的排放通道释放排放物，进而使得第二电池单体的排放物及时有效的排放到电池的外部，而且，可以有效降低第二电池单体的热失效导致与其相邻的第二电池单体的热失效的概率，进而有利于缓解热失效的连锁反应，提升电池的使用安全性。
在一些实施方式中，电池还包括箱体，箱体具有多个壁，多个壁用于围合形成容纳第一电池单体和第二电池单体的容纳腔，多个壁中的至少一个壁具有中空内腔，中空内腔用于形成排放通道。箱体用于对置于容纳腔内的第一电池单体和第二电池单体进行保护，而在箱体的多个壁中的至少一个壁中设置形成排放通道的中空内腔，可以使得第一电池单体和第二电池单体的内部压力或者温度达到阈值时，第一电池单体和第二电池单体的排放物可以排放到中空内腔中，如此，第一电池单体和第二电池单体热失效时的排放物可以及时有效的排到电池的外部，提升电池的使用安全性。
在一些实施方式中，多个壁包括底壁，底壁用于支撑第一电池单体和第二电池单体，底壁具有中空内腔，如此，第一电池单体内的排放物朝下释放，并通过泄压机构进入到位于底部的中空内腔中，同时，第二电池单体内的排放物朝下释放，并通过第二泄压机构进入到位于底部的中空内腔中，电池的这种设置方式，可以使得电池放置 在车辆的电池仓中后，电池向车辆的底部释放排放物，而不是向位于电池仓上方的乘客仓释放排放物，进而进一步增加电池的使用安全性。
在一些实施方式中，至少一个壁被构造成在第一泄压机构和/或第二泄压机构致动时被破坏，以使来自第一电池单体和/或第二电池单体的排放物穿过至少一个壁进入相应的排放通道，如此，当第一电池单体的内部压力或温度达到阈值，使得第一电池单体的第一泄压机构致动，并且第一电池单体内部的排放物释放时，和/或，当第二电池单体的内部压力或温度达到阈值，使得第二电池单体的第二泄压机构致动，并且第二电池单体内部的排放物释放时，第一电池单体和/或第二电池单体释放的排放物可以作用在箱体的至少一个壁上，使得箱体与第一泄压机构相对的部分和/或箱体与第二泄压机构相对的部分被破坏，箱体的中空内腔与第一泄压机构和/或第二泄压机构相连通，实现第一电池单体和/或第二电池单体内部的排放物可以及时有效的排放到排放通道中，进而进一步增加电池的使用安全性。
在一些实施方式中，至少一个壁设有第一通孔，第一通孔被构造成与排放通道连通，以在第一电池单体和/或第二电池单体致动时来自第一电池单体和/或第二电池单体的排放物经由第一通孔进入相应的排放通道，如此，当第一电池单体的内部压力或温度达到阈值，使得第一电池单体的第一泄压机构致动，并且第一电池单体内部的排放物释放时，和/或，当第二电池单体的内部压力或温度达到阈值，使得第二电池单体的第二泄压机构致动，并且第二电池单体内部的排放物释放时，第一电池单体和/或第二电池单体释放的排放物通过第一通孔进入到箱体的中空内腔，实现第一电池单体和/或第二电池单体内部的排放物可以及时有效的排放到排放通道中，进而进一步增加电池的使用安全性。
在一些实施方式中，电池还包括热管理部件，用于容纳流体以给第一电池单体和第二电池单体调节温度，热管理部件设置于第一电池单体和第二电池单体与至少一个壁之间，热管理部件被构造成在第一泄压机构和/或第二泄压机构致动时被破坏，以使流体流出，如此，第一电池单体和/或第二电池单体的排放物能够通过被破坏的热管理部件进入排放通道内，并且由于热管理部件被破坏使得流体流出，进而通过流体快速降低电池内部的温度，有利于缓解热失效的连锁反应，提升电池的使用安全性。
在一些实施方式中，热管理部件设有第二通孔，第二通孔被构造成与排放通道连通，以在第一泄压机构和/或第二泄压机构致动时来自第一电池单体和/或第二电池单体的排放物经由第二通孔进入相应的排放通道，如此，第一电池单体和/或第二电池单体释放的排放物能够通过第二通孔快速且顺畅地进入到排气通道内，提升电池的使用安全性。
在一些实施方式中，第二通孔经由第一通孔与排放通道连通，如此，第一电池单体和/或第二电池单体释放的排放物能够通过第二通孔快速且顺畅地进入到第一通孔，进而进入到排气通道内，提升电池的使用安全性。
本申请实施例的第二方面提供一种装置，其包括上述电池，电池用于提供电能。
本申请的装置，利用上述电池提供电能，因而通过限定第一泄压机构的面积大于第二泄压机构的面积，可以使得失效反应更加剧烈的第一电池单体能够通过面积更大的第一泄压机构及时有效的释放压力，有效缓解第一电池单体的急速温升，进而有效 降低第一电池单体热失效引发的连锁反应的概率，提升电池整体的使用安全性。
本申请实施例的第三方面提供一种电池的制备方法，其包括如下步骤：
配置第一电池单体，第一电池单体包括第一泄压机构，第一泄压机构用于在第一电池单体的内部压力或温度达到阈值时致动以泄放第一电池单体的内部压力；
配置第二电池单体，第二电池单体包括第二泄压机构，第二泄压机构用于在第二电池单体的内部压力或温度达到阈值时致动以泄放第二电池单体的内部压力；
其中，第一电池单体的能量密度大于第二电池单体的能量密度，且第一泄压机构的面积大于第二泄压机构的面积。
本实施例提供的电池的制备方法，通过配置能量密度较高的第一电池单体和能量密度较低的第二电池单体，且限定配置的第一电池单体的第一泄压机构和面积大于第二电池单体的第二泄压机构的面积，当第一电池单体和第二电池单体发生热失效时，即使第一电池单体热失效的失效反应比第二电池单体热失效的失效反应更加剧烈，也能使得失效反应更加剧烈的第一电池单体通过面积更大的第一泄压机构及时有效的释放压力，同时，使得第二电池单体通过第二泄压机构也能即使有效的释放压力，有效缓解第一电池单体的急速温升，进而有效降低第一电池单体热失效引发的连锁反应的概率，提升电池整体的使用安全性。
本申请实施例的第四方面提供一种电池的制备装置，其包括：
第一电池单体配置模块，用于配置第一电池单体，第一电池单体包括第一泄压机构，第一泄压机构用于在第一电池单体的内部压力或温度达到阈值时致动以泄放第一电池单体的内部压力；
第二电池单体配置模块，用于配置第二电池单体，第二电池单体包括第二泄压机构，第二泄压机构用于在第二电池单体的内部压力或温度达到阈值时致动以泄放第二电池单体的内部压力；
其中，第一电池单体的能量密度大于第二电池单体的能量密度，且第一泄压机构的面积大于第二泄压机构的面积。
本实施例提供的电池的制备装置，通过第一电池单体配置模块配置能量密度较高的第一电池单体，通过第二电池单体配置模块配置能量密度较低的第二电池单体，且限定配置的第一电池单体的第一泄压机构和面积大于第二电池单体的第二泄压机构的面积，当第一电池单体和第二电池单体发生热失效时，即使第一电池单体热失效的失效反应比第二电池单体热失效的失效反应更加剧烈，也能使得失效反应更加剧烈的第一电池单体通过面积更大的第一泄压机构及时有效的释放压力，同时，使得第二电池单体通过第二泄压机构也能及时有效的释放压力，有效缓解第一电池单体的急速温升，进而有效降低第一电池单体热失效引发的连锁反应的概率，提升电池整体的使用安全性。
附图说明
图1是本申请的车辆的结构示意图；
图2是本申请实施例的电池模块的结构示意图；
图3是本申请实施例的电池包的结构示意图；
图4是本申请实施例的电池的结构示意图一；
图5是本申请实施例的电池的爆炸图一；
图6是本申请实施例的电池的结构示意图二；
图7是本申请实施例的电池单体的结构示意图；
图8是本申请实施例的电池单体的主视图；
图9是本申请实施例的电池单体的右视图；
图10是本申请实施例的电池单体的俯视图；
图11是本申请实施例的电池的爆炸图二；
图12是本申请实施例的电池的结构示意图三；
图13a是本申请实施例的第一电池单体的结构示意图；
图13b是本申请实施例的第二电池单体的结构示意图；
图14是本申请实施例的电池的爆炸图三；
图15是本申请一实施例的底壁的结构示意图一；
图16是本申请一实施例的底壁的结构示意图二；
图17是本申请一实施例的热管理部件的结构示意图；
图18是本申请另一实施例的底壁的结构示意图一；
图19是本申请另一实施例的底壁的结构示意图二；
图20是本申请另一实施例的热管理部件的结构示意图。
附图标记：
1-车辆；
11-电池；
111-第一电池单体；
1111-第一泄压机构；
1112-正电极端子；
1113-负电极端子；
1114-壳体；
112-第二电池单体；
1121：第二泄压机构；
113-箱体；
1131-底壁；
1132-侧壁；
1133-第一通孔；
114-第一隔热件；
115-第二隔热件；
116-第三隔热件；
117-排放通道；
118-热管理部件；
1181-第二通孔；
12-控制器；
13-马达。
具体实施方式
电池为一种将化学能转化为电能的装置，被广泛应用于新能源汽车、储能电站等领域。
现有的一类电池包括箱体，以及设置在箱体内的多个电池单体，多个电池单体通过串联和/或并联连接。其中，多个电池单体包括第一电池单体和第二电池单体，第一电池单体的能量密度大于第二电池单体的能量密度，第一电池单体上设置有第一泄压机构，第一泄压机构用于释放第一电池单体内部的气体，进而保证第一电池单体的使用安全，第二电池单体上设置有第二泄压机构，第二泄压机构用于释放第二电池单体内部的气体，进而保证第二电池单体的使用安全。
然而，本申请的发明人研究发现，当电池单体热失效时，第一电池单体的失效反应会比第二电池单体的失效反应更剧烈，也即，第一电池单体产生的高温气体远大于第二电池单体产生的高温气体，所以第一电池单体更容易温度升高，进而引发连锁反应，进一步加剧第一电池单体热失效，引发电池使用安全的问题。
为了解决失效反应剧烈的第一电池单体引发连锁反应，进而引发电池使用安全的问题，本申请提供一种电池、装置、电池的制备方法以及电池的制备装置，通过在第一电池单体上设置第一泄压机构，在第二电池单体上设置第二泄压机构，且限定第一泄压机构的面积大于第二泄压机构的面积，使得能量密度更高的第一电池单体也能够在内部压力或者温度达到阈值时，通过面积更大的第一泄压机构及时泄放内部的压力，进而有效缓解第一电池单体的急速温升，有效降低第一电池单体热失效引发的连锁反应，提升电池的使用安全性。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，以使本申请实施例的上述目的、特征和优点能够更加明显易懂。显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其它实施例，均属于本申请保护的范围。
本申请实施例提供一种装置和一种电池，本申请提供的装置包括电池，电池用于提供电能，本申请提供的装置例如是手机、便携式设备、笔记本电脑、电瓶车、电动汽车、轮船、航天器、电动玩具和电动工具等等，其中，航天器例如是飞机、火箭、航天飞机和宇宙飞船等等，电动玩具例如包括固定式或移动式的电动玩具，具体例如， 游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，电动工具例如包括金属切削电动工具、研磨电动工具、装配电动工具和铁道用电动工具，具体例如，电钻、电动砂轮机、电动扳手、电动螺丝刀、电锤、冲击电钻、混凝土振动器和电刨。
本申请描述的电池不仅仅局限适用于上述所描述的用电装置，但为描述简洁，下述实施例均以电动汽车为例进行说明。
图1为本实施例的一种车辆1的简易示意图。车辆1可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1的内部可以设置电池11，具体例如，在车辆1的底部或车头或车尾可以设置电池11。电池11可以用于车辆1的供电，例如，电池可以作为车辆1的操作电源。车辆1还可以包括控制器12和马达13，控制器12例如用来控制电池11为马达13的供电。电池11可以用于车辆1的启动、导航等，当然，电池11也可以用于驱动车辆1行驶，替代或部分地替代燃油或天然气为车辆1提供驱动动力。
本实施例中所提到的电池11可以是如图2示出的电池模块或者如图3示出的电池包等，电池模块和电池包的基本结构单元为电池单体，多个电池单体可经由电极端子而被串联和/或并联在一起，以应用于各种用电装置。其中，电池模块是为了从外部冲击、热、振动等中保护电池单体，电池模块是通过将一定数目的电池单体电连接在一起并放入一个框架中而形成。电池包则是装入电动汽车的电池系统的最终状态。目前的大部分电池包是在一个或多个电池模块上装配电池管理系统、热管理部件等各种控制和保护系统而制成。随着技术的发展，电池模块这个层次可以被省略，也即，直接由电池单体形成电池包。这一改进使得电池系统的重量能量密度、体积能量密度得到提升的同时零部件数量显著下降。
如图2至图6所示，本申请的电池11包括：第一电池单体111和第二电池单体112，第一电池单体111的能量密度大于第二电池单体112的能量密度，第一电池单体111包括第一泄压机构1111，第一泄压机构1111用于在第一电池单体111的内部压力或温度达到阈值时致动以泄放第一电池单体111的内部压力，第二电池单体112包括第二泄压机构1121，第二泄压机构1121用于在第二电池单体112的内部压力或温度达到阈值时致动以泄放第二电池单体112的内部压力，第一泄压机构1111的面积大于第二泄压机构1121的面积。
第一泄压机构1111是指在第一电池单体111的内部压力或内部温度达到预定阈值时能够致动以泄放内部压力和/或内部物质的元件或部件。第一泄压机构1111具体可以采用诸如防爆阀、气阀、泄压阀或安全阀等的形式，并可以具体采用压敏或温敏的 元件或构造，即，当第一电池单体111的内部压力或温度达到预定阈值时，第一泄压机构1111执行动作或者第一泄压机构1111中设有的薄弱结构被破坏，从而形成可供内部压力泄放的开口或通道。
可以理解，第二泄压机构1121是指在第二电池单体112的内部压力或内部温度达到预定阈值时能够致动以泄放内部压力和/或内部物质的元件或部件。第二泄压机构1121具体可以采用诸如防爆阀、气阀、泄压阀或安全阀等的形式，并可以具体采用压敏或温敏的元件或构造，即，当第二电池单体112的内部压力或温度达到预定阈值时，第二泄压机构1121执行动作或者第二泄压机构1121中设有的薄弱结构被破坏，从而形成可供内部压力泄放的开口或通道。
本申请所称的阈值可以是压力阈值或温度阈值，该阈值的设计根据设计需求的不同而不同，例如可根据被认为是存在危险或失控风险的第一电池单体111的内部压力或内部温度值而设计或确定该阈值，并且，该阈值例如可能取决于第一电池单体111中的正极极片、负极极片、电解液和隔离膜中的一种或几种所用的材料；再例如可根据被认为是存在危险或失控风险的第二电池单体112的内部压力或内部温度值而设计或确定该阈值，并且，该阈值例如可能取决于第二电池单体112中的正极极片、负极极片、电解液和隔离膜中的一种或几种所用的材料。
本申请中所提到的“致动”是指第一泄压机构1111产生动作或被激活至一定的状态，从而使得第一电池单体111的内部压力得以被泄放，第二泄压机构1121产生动作或被激活至一定的状态，从而使得第二电池单体112的内部压力得以被泄放。第一泄压机构1111产生的动作可以包括但不限于：第一泄压机构1111中的至少一部分破裂、破碎、被撕裂或者打开，等等。第一泄压机构1111在致动时，第一电池单体111的内部的高温高压物质作为排放物会从致动的部位向外排出。以此方式能够在可控压力或温度的情况下使第一电池单体111发生泄压，从而避免潜在的更严重的事故发生。本申请中所提到的来自第一电池单体111的排放物包括但不限于：电解液、被溶解或分裂的正负极极片、隔离膜的碎片、反应产生的高温高压气体、火焰，等等。高温高压的排放物朝向第一电池单体111的设置第一泄压机构1111的方向排放，并且可更具体地沿朝向第一泄压机构1111致动的区域的方向排放，这种排放物的威力和破坏力可能很大，甚至可能足以冲破在该方向上的一个或多个零部件。同理，第二泄压机构1121产生的动作可以包括但不限于：第二泄压机构1121中的至少一部分破裂、破碎、被撕裂或者打开，等等。第二泄压机构1121在致动时，第二电池单体112的内部的高温高压物质作为排放物会从致动的部位向外排出。以此方式能够在可控压力或温度的情况 下使第二电池单体112发生泄压，从而避免潜在的更严重的事故发生。本申请中所提到的来自第二电池单体112的排放物包括但不限于：电解液、被溶解或分裂的正负极极片、隔离膜的碎片、反应产生的高温高压气体、火焰，等等。高温高压的排放物朝向第二电池单体112的设置第二泄压机构1121的方向排放，并且可更具体地沿朝向第二泄压机构1121致动的区域的方向排放，这种排放物的威力和破坏力可能很大，甚至可能足以冲破在该方向上的一个或多个零部件。
本申请中的第一电池单体111和第二电池单体112可以为锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。第一电池单体111和第二电池单体112可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。第一电池单体111和第二电池单体112一般按封装的方式分成三种：柱形电池单体、方体方形电池单体和软包电池单体，本申请实施例对此也不限定。
如图7至图10所示，第一电池单体111通常包括电极组件(未示出)和电解液(未示出)，电极组件由正极极片、负极极片、设置在正极极片和负极极片之间的隔膜组成，第一电池单体111主要依靠金属离子在正极极片和负极极片之间移动来工作。正极极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的集流体凸出于已涂覆正极活性物质层的集流体，未涂敷正极活性物质层的集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的集流体凸出于已涂覆负极活性物质层的集流体，未涂敷负极活性物质层的集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔膜的材质可以为聚丙烯(简称为PP)或聚乙烯(简称为PE)等。此外，电极组件可以是卷绕式结构，也可以是叠片式结构，电极组件的数量可以为一个或多个，本申请实施例对此不做具体限制。第一电池单体111还包括壳体1114，电极组件和电解液均封装在壳体1114内，壳体1114可以为中空的长方体、正方体或圆柱体，壳体1114的材质可以为铝或钢及其合金，也可以是塑料材质或者铝塑膜。壳体1114上还设置有正电极端子1112和负电极端子1113，正极极耳与正电极端子1112电连接，负极极耳与负电极端子1113电连接，以输出电能。壳体1114上还设置有上述第一泄压机构1111，第一泄压机构1111可以设置在壳体1114的任意位置，例如第 一泄压机构1111可以设置在壳体1114的顶部、底部或侧部，第一泄压机构1111也可以设置在正电极端子1112和负电极端子1113之间，本申请对此不做具体的限制，只要可以实现释放第一电池单体111的内部压力即可。
可以理解，第二电池单体112的结构和第一电池单体111的结构相同，在此不再赘述。
在一些实施方式中，第一电池单体111的能量密度E 1与第二电池单体112的能量密度E 2的比值满足：1.26≤E 1/E 2≤2.14，其中，能量密度指的是单位质量或单位体积的电池所放出的能量，即重量能量密度或体积能量密度，在一些实施方式中，第一电池单体111例如为三元锂电池，具体例如为镍钴锰酸锂电池或者镍钴铝酸锂电池，第二电池单体112例如为磷酸铁锂电池或者钴酸锂电池。值得说明的是，第一电池单体111的能量密度大于第二电池单体112的能量密度，通常第一电池单体1115的热失效反应比第二电池单体112的失效反应剧烈，而同时设置第一电池单体111和第二电池单体112，有利于降低热失效的连锁反应，也即有利于缓减热扩散的蔓延，进一步提升电池11的使用安全性。
在一些实施方式中，第一泄压机构1111的面积A 1与第二泄压机构1121的面积A 2的比值满足：1.5≤A 1/A 2≤4，如此，使得第一电池单体111和第二电池单体112均可以及时有效的释放能量，提升电池的使用安全性。
本申请实施例提供的电池11，在第一电池单体111上设置第一泄压机构1111，能够使得第一电池单体111的内部压力或温度达到阈值时，第一电池单体111可以释放内部压力；在第二电池单体112上设置第二泄压机构1121，能够使得第二电池单体112的内部压力或温度达到阈值时，第二电池单体112也可以释放内部压力；第一电池单体111的能量密度大于第二电池单体112的能量密度，第一电池单体111热失效的失效反应比第二电池单体112热失效的失效反应更加剧烈，通过限定第一泄压机构1111的面积大于第二泄压机构1121的面积，可以使得失效反应更加剧烈的第一电池单体111能够通过面积更大的第一泄压机构1111及时有效的释放压力，有效降低因第一电池单体111无法及时释放内部压力造成的连锁反应的概率，提升电池11整体的使用安全性。
本实施例的电池11，第一电池单体111和第二电池单体112以n个第一电池单体111、m个第二电池单体112的排布方式交替排列，其中n≥1，m≥1，且n、m均为整数。
其中，n和m的值可以取一样的值，也可以取不一样的值，例如在一些实施方式 中，如图2、图4和图5所示，n和m的取值均为1，也即，n＝1，m＝1，此时，第一电池单体111和第二电池单体112一一间隔排布为一行或一列，也即，相邻两个第一电池单体111之间设置一个第二电池单体112，且相邻两个第二电池单体112之间设置一个第一电池单体111；再例如，在一些实施方式中，如图3所示，n和m的取值均为6，也即，n＝6，m＝6，此时，六个第一电池单体111和六个第二电池单体112组成排布单元，排布单元为三个，三个排布单元的排布方向沿图3示出的Y轴方向，而每个排布单元内部的六个第一电池单体111和六个第二电池单体112沿图3示出的X方向排布，且相邻两个排布单元中，第一电池单元111和第二电池单体112相互错开排布；再例如在另一些实施方式中，如图11所示，n的取值为2，m的取值为2，也即，n＝2，m＝2，此时，第一电池单体111和第二电池单体112以两个第一电池单体111、两个第二电池单体112两两间隔排布为一行或一列，也即，以两个第一电池单体111、两个第二电池单体112组成的排布单元沿一行或一列循环排布。可以理解，n的取值和m的取值还可以为别的值，在此不在枚举。
如图11所示，本申请的电池11中，在一些实施方式中，相邻两个第一电池单体111之间还设置有第一隔热件114，当其中一个第一电池单体111发生热失效时，可以通过第一隔热件114有效阻止与发生热失效的第一电池单体111相邻的第一电池单体111发生热失效。在一些实施方式中，相邻第二电池单体112之间还设置有第二隔热件115，当其中一个第二电池单体112发生热失效时，可以通过第二隔热件115有效阻止与发生热失效的第二电池单体112相邻的第二电池单体112发生热失效。在一些实施方式中，相邻第一电池单体111和第二电池单体112之间还设置有第三隔热件116，当其中一个第一电池单体111发生热失效时，可以通过第三隔热件116有效阻止与发生热失效的第一电池单体111相邻的第二电池单体112发生热失效，反之亦然。在一些实施方式中，在电池11中包括第一隔热件114、第二隔热件115和第三隔热件116中的至少一者。在一些实施方式中，第一隔热件114、第二隔热件115和第三隔热件116可以为泡沫、橡胶、隔热棉、气凝胶隔热垫中的至少一种。在一些实施方式中，第一隔热件114、第二隔热件115和第三隔热件116可以被构造成口字框结构，进一步地，第一隔热件114、第二隔热件115和第三隔热件116还包括填充件，用于填充口字框的中空部，填充件具有弹性，其中，填充件选自泡沫、橡胶、隔热棉、气凝胶隔热垫中的至少一种。
本申请实施例电池11还包括排放通道117，排放通道117与第一泄压机构1111和/或第二泄压机构1121相对设置，且排放通道117被配置为在第一泄压机构1111 致动时收集来自第一电池单体111的排放物，和/或，在第二泄压机构1121致动时收集来自第二电池单体112的排放物。设置排放通道可以使得第一电池单体111和第二电池单体112内部压力和温度达到阈值时，及时将第一电池单体111和第二电池单体112内部的压力释放，进而使得电池11使用更加安全。
其中，在一些实施方式中，排放通道117与第一泄压机构1111相对设置，且排放通道117被配置为在第一泄压机构1111致动时收集来自第一电池单体111的排放物，在一些实施方式中，排放通道117与第二泄压机构1121相对设置，且排放通道117被配置为在第二泄压机构1121致动时收集来自第二电池单体112的排放物。在另一些实施方式中，如图4和图5，排放通道117同时与第一电池单体111的第一泄压机构1111以及第二电池单体112的第二泄压机构1121相对设置，排放通道117被配置为在第一泄压机构1111和第二泄压机构1121致动时收集来自第一电池单体111和第二电池单体112的排放物，对应的，第一电池单体111的第一泄压机构1111设置在如图13a示出的正中位置，同理，第二电池单体112的第二泄压机构1121也设置在正中位置。
在如图12所示的实施方式中，排放通道117设置为至少两条，各排放通道117相互隔离设置，第一泄压机构1111与第二泄压机构1121分别与不同的排放通道117相对设置，示例性的，第一电池单体111和第二电池单体112按一列排布，第一电池单体111和第二电池单体112的长度和宽度可以大致一样，而厚度可以一样，也可以不一样，且第一电池单体111上的第一泄压机构1111距离其一侧边为第一电池单体111宽度的四分之一，第二电池单体112上的第二泄压机构1121距离其一侧边为第二电池单体112宽度的四分之一，且第一泄压机构1111和第二泄压机构1121不共线设置，即第一电池单体111上的第一泄压机构1111和第二电池单体112上的第二泄压机构1121在第一电池单体111和第二电池单体112的排布方向上交错设置，如此，第一电池单体111内部压力或者温度达到阈值时，第一电池单体111内部的排放物从其中一条排放通道117排放，第二电池单体112内部压力或者温度达到阈值时，第二电池单体112内部的排放物从其中一条排放通道117排放，进而使得第一电池单体111和第二电池单体112的排放物均可以及时有效的排放到电池11的外部，提高电池11的使用安全性。
当然，在上述实施方式的替换实施方式中，如图13a和图13b所示，第一电池单体111上的第一泄压机构1111距离其一侧边可以为第一电池单体111宽度的二分之一，第二电池单体112上的第二泄压机构1121距离其一侧边可以为第二电池单体112 宽度的四分之一，此时，第一电池单体111上的第一泄压机构1111和第二电池单体112上的第二泄压机构1121也不共线设置，也即，第一电池单体111上的第一泄压机构1111和第二电池单体112上的第二泄压机构1121在第一电池单体111和第二电池单体112的排布方向上交错设置。
在一些实施方式中，第一电池单体111设置为至少两个，相邻两个第一电池单体111的第一泄压机构1111分别与不同的排放通道117相对设置，如此，可以实现不同的第一电池单体111分别通过不同的排放通道117释放排放物，进而使得第一电池单体111的排放物及时有效的排放到电池11的外部，而且，可以有效降低第一电池单体111的热失效导致第二电池单体112的热失效，进而延缓连锁反应，提升电池11的使用安全性。
在另一些实施方式中，，第二电池单体112设置为至少两个，相邻两个第二电池单体112的第二泄压机构1121分别与不同的排放通道117相对设置，如此，可以实现不同的第二电池单体112分别通过不同的排放通道117释放排放物，进而使得第二电池单体112的排放物及时有效的排放到电池11的外部，而且，可以有效降低第二电池单体112的热失效导致第一电池单体111的热失效，进而延缓连锁反应，提升电池11的使用安全性。
在一些实施方式中，如图5和图14所示，电池11还包括箱体113，箱体113具有多个壁，多个壁用于围合形成容纳第一电池单体111和第二电池单体112的容纳腔，多个壁中的至少一个壁具有中空内腔，中空内腔用于形成排放通道117。箱体113可以是密封或者不密封的。具体例如，箱体113包括位于顶部的顶壁(未示出)、位于下部的底壁1131、以及位于底壁1131四周的侧壁1132，顶壁和底壁1131分别盖设在侧壁1132的两端开口处，进而与侧壁1132共同围合形成容纳腔，当然，侧壁1132可以由四个子侧壁首尾相连围合形成，也可以是一体件。箱体113用于对置于容纳腔内的第一电池单体111和第二电池单体112进行保护，而在箱体113的多个壁中的至少一个壁中设置形成排放通道117的中空内腔，可以方便第一电池单体111的第一泄压机构1111和第二电池单体112的第二泄压机构1121与相应的中空内腔相对设置，进而使得第一电池单体111的内部压力或者温度达到阈值时，第一电池单体111的排放物可以排放到中空内腔中，第二电池单体112的内部压力或者温度达到阈值时，第二电池单体112的排放物可以排放到中空内腔中，进而有效降低燃烧和爆炸的风险，提升电池11的使用安全性。
进一步，底壁1131用于支撑第一电池单体111和第二电池单体112，底壁1131 具有中空内腔，对应的，第一电池单体111的第一泄压机构1111和第二电池单体112的第二泄压机构1121均设置在各自壳体1114的底部。如此，第一电池单体111内的排放物朝下释放，并通过第一泄压机构1111进入到位于底部的中空内腔中，第二电池单体112内的排放物朝下释放，并通过第二泄压机构1121进入到位于底部的中空内腔中。电池11的这种设置方式，可以使得电池11放置在车辆1的电池11仓中后，电池11向车辆1的底部释放排放物，而不是向位于电池11仓上方的乘客仓释放排放物，进而进一步增加电池11的使用安全性。
在一些实施方式中，为了便于第一电池单体111和第二电池单体112的排放物及时有效的排放到排放通道117中，第一电池单体111的第一泄压机构1111和第二电池单体112的第二泄压机构1121被设置成能够与对应排放通道117相连通。其中，第一电池单体111的第一泄压机构1111与箱体113上形成排放通道117的中空内腔的连通方式，以及第二电池单体112的第二泄压机构1121与箱体113上形成排放通道117的中空内腔的连通方式，通过下述两种实施方式进行描述，需要说明是，下面这两种实施方式仅是示例性的给出了两种可行的实施方式，而不是对第一电池单体111的第一泄压机构1111和中空内腔的连通方式，以及第二电池单体112的第二泄压机构1121和中空内腔的连通方式进行限定。
在一种实施方式中，电池11的箱体113的至少一个壁被构造成在第一泄压机构1111致动时被破坏，以使来自第一电池单体111的排放物穿过至少一个壁进入排放通道117。换句话说就是，箱体113的至少一个壁上设置有中空内腔，可以是上述的顶壁、底壁1131或侧壁1132，且箱体113与第一电池单体111的第一泄压机构1111相对的部分在第一泄压机构1111具有完整的壁面，也即，箱体113与第一电池单体111的第一泄压机构1111相对的部分在第一泄压机构1111不致动时不具有连通中空内腔的孔结构。但是，当第一电池单体111的内部压力或温度达到阈值，使得第一电池单体111的第一泄压机构1111致动，并且第一电池单体111内部的排放物释放时，第一电池单体111释放的排放物可以作用在箱体113的至少一个壁上，使得箱体113与第一电池单体111的泄压机构相对的部分被破坏(发生破损或破裂)，使得箱体113的中空内腔的内部与第一泄压机构1111相连通，如此，实现第一电池单体111内部的排放物可以及时有效的排放到排放通道117中。相类似的，电池11的箱体113的至少一个壁被构造成在第二泄压机构1121致动时被破坏，以使来自第二电池单体112的排放物穿过至少一个壁进入排放通道117，第二电池单体112的第二泄压机构1121与中空通道的这种连通方式与第一电池单体111的第一泄压机构1111与中空通道的这种连通 方式一样，在此不再赘述。
在另一种实施方式中，电池11的箱体113的至少一个壁设有第一通孔1133，可以是上述的顶壁、底壁1131或侧壁1132，第一通孔1133被构造成与排放通道117连通，以在第一泄压机构1111致动时来自第一电池单体111的排放物经由第一通孔1133进入排放通道117，当第一电池单体111的内部压力或温度达到阈值，使得第一电池单体111的泄压机构致动，并且第一电池单体111内部的排放物释放时，第一电池单体111释放的排放物，通过第一通孔1133进入到箱体113的中空内腔的内部，如此，实现第一电池单体111内部的排放物可以及时有效的排放到排放通道117中。相类似的，电池11的箱体113的至少一个壁设有第一通孔1133，可以是上述的顶壁、底壁1131或侧壁1132，第一通孔1133被构造成与排放通道117连通，以在第二泄压机构1121致动时来自第二电池单体的排放物经由第一通孔1133进入排放通道117，第二电池单体112的第二泄压机构1121与中空通道的这种连通方式与第一电池单体111的第一泄压机构1111与中空通道的这种连通方式一样，在此不再赘述。
电池11还包括热管理部件118，用于容纳流体以给第一电池单体111和第二电池单体112调节温度，热管理部件118设置于第一电池单体111和第二电池单体112与至少一个壁之间，通过设置热管理部件118，可以实现对第一电池单体111和第二电池单体112的温度进行调节，进而使得第一电池单体111和第二电池单体112可以更加高效安全的充放电。这里的流体可以是液体或气体，调节温度是指给第一电池单体111和第二电池单体112加热或者冷却。在给第一电池单体111和第二电池单体112冷却或降温的情况下，该热管理部件118用于容纳冷却流体以给第一电池单体111和第二电池单体112降低温度，此时，热管理部件118也可以称为冷却部件、冷却系统或冷却板等，其容纳的流体也可以称为冷却介质或冷却流体，更具体的，可以称为冷却液或冷却气体。另外，热管理部件118也可以用于容纳加热流体以给电池单体111升温，本申请实施例对此并不限定。可选的，流体可以是循环流动的，以达到更好的温度调节的效果。可选的，流体可以为水、水和乙二醇的混合液或者空气等。
其中，热管理部件118被构造成在第一泄压机构1111和/或第二泄压机构1121致动时被破坏(发生破损或破裂)，以使流体流出。即热管理部件118在第一电池单体111和第二电池单体112的内部压力或温度达到阈值需要释放高温高压气体时，利用第一电池单体111和第二电池单体112释放的排放物作用热管理部件118，进而对热管理部件118进行破坏，第一电池单体111和第二电池单体112的排放物能够通过被破坏的热管理部件118进入排放通道117(即箱体113的中空内腔)内。并且由于 热管理部件118被破坏使得流出的流体，例如冷却液，吸收大量的热量而发生气化，可快速降低电池11内部的温度，有利于缓解热失效的连锁反应，提升电池11的使用安全性。
示例性的，如图5和图14所示，热管理部件118例如是水冷板，水冷板内设置有流体通道，流体通道的一端形成进水口，水流通道的另一端形成出水口，当第一电池单体111和第二电池单体112正常工作的时候，通过调节水冷板内的水温，进而调节第一电池单体111和第二电池单体112的环境温度，进而使得第一电池单体111和第二电池单体112的充放电工作在比较合理的温度范围内，提升电池11的充电效率和放电效率。当第一电池单体111发生热失效，或者第二电池单体112发生热失效，或者第一电池单体111和第二电池单体112同时发生热失效时，第一电池单体111和第二电池单体112释放的内部压力使得水冷板破损，进而使得水冷板内部的水汽化，进而吸收第一电池单体111和第二电池单体112释放的高温气体的热量，进一步降低第一电池单体111和第二电池单体112发生燃烧和爆炸的概率，提升电池11的使用安全性。可选的，热管理部件118设有第二通孔1181，第二通孔1181被构造成能够与排放通道117连通，以在第一泄压机构1111和/或第二泄压机构1121致动时来自第一电池单体111和/或第二电池单体112的排放物经由第二通孔1181进入相应的排放通道117。可选的，第二通孔1181可以设置为大于等于第一电池单体111上设置的第一泄压机构1111的面积，和/或，大于等于第二电池单体112上设置的第二泄压机构1121的面积。如此，当第一电池单体111的内部压力或温度达到阈值，使得第一电池单体111的第一泄压机构1111致动，并且第一电池单体111内部的排放物释放时，第一电池单体111释放的排放物能够通过第二通孔1181快速且顺畅地进入到排气通道117(即箱体113的中空内腔)内，实现第一电池单体111内部的排放物可以及时有效的排放到排放通道117中。同理，当第二电池单体112的内部压力或温度达到阈值，使得第二电池单体112的第二泄压机构1121致动，并且第二电池单体112内部的排放物释放时，第二电池单体112释放的排放物能够通过第二通孔1171快速且顺畅地进入到排气通道117(即箱体113的中空内腔)内，实现第二电池单体112内部的排放物可以及时有效的排放到排放通道117中。进一步地，当箱体113的至少一个壁设有第一通孔1133，第一通孔1133被构造成与排放通道117连通时，此时，第二通孔1181经由第一通孔1133与排放通道117连通，第一电池单体111和/或第二第二电池单体112释放的排放物，依次通过第二通孔1181和第一通孔1133进入到排气通道117(即箱体113的中空内腔)中，如此，实现第一电池单体111和第二电池单体112内部的排放物可以 及时有效的排放到排放通道117中。值得说明的是，在上述实施方式中，第二通孔1181需要和第一通孔1133一一对应，示例性的，在如图15的底壁1131上设置有两条排放通道117，在如图16的底壁1131上设置有与两条排放通道117相连通的多个第一通孔1133，对应的，在如图17的热管理部件118上设置有多个与第一通孔1133一一对应的第二通孔1181。示例性的，在如图18的底壁1131上设置有一条排放通道117，在如图19的底壁1131上设置有与一条排放通道117相连通的多个第一通孔1133，对应的，在如图20的热管理部件118上设置有多个与第一通孔1133一一对应的多个第二通孔1181。
上文中结合图1至图20描述了本申请实施例的电池11，下面将描述本申请实施例电池11的制备方法和设备，其中未详细描述的部分可参见前述各实施例。
本实施例提供一种电池的制备方法，其包括如下步骤：
配置第一电池单体111，第一电池单体111包括第一泄压机构1111，第一泄压机构1111用于在第一电池单体111的内部压力或温度达到阈值时致动以泄放第一电池单体111的内部压力；
配置第二电池单体112，第二电池单体112包括第二泄压机构1121，第二泄压机构1121用于在第二电池单体112的内部压力或温度达到阈值时致动以泄放第二电池单体112的内部压力；
其中，第一电池单体111的能量密度大于第二电池单体112的能量密度，且第一泄压机构1111的面积大于第二泄压机构1121的面积。
本实施例提供的电池的制备方法，通过配置能量密度较高的第一电池单体111和能量密度较低的第二电池单体112，且限定配置的第一电池单体111的第一泄压机构1111和面积大于第二电池单体112的第二泄压机构1121的面积，当第一电池单体111和第二电池单体112发生热失效时，即使第一电池单体111热失效的失效反应比第二电池单体112热失效的失效反应更加剧烈，也能使得失效反应更加剧烈的第一电池单体111通过面积更大的第一泄压机构1111及时有效的释放压力，同时，使得第二电池单体112通过第二泄压机构1121也能即使有效的释放压力，有效缓解第一电池单体111的急速温升，进而有效降低第一电池单体111热失效引发的连锁反应的概率，提升电池11整体的使用安全性。
本申请实施例提供一种电池的制备装置，其包括：
第一电池单体配置模块，用于配置第一电池单体111，第一电池单体111包括第一泄压机构1111，第一泄压机构1111用于在第一电池单体111的内部压力或温度达 到阈值时致动以泄放第一电池单体111的内部压力；
第二电池单体配置模块，用于配置第二电池单体112，第二电池单体112包括第二泄压机构1121，第二泄压机构1121用于在第二电池单体112的内部压力或温度达到阈值时致动以泄放第二电池单体112的内部压力；
其中，第一电池单体111的能量密度大于第二电池单体112的能量密度，且第一泄压机构1111的面积大于第二泄压机构1121的面积。
本实施例提供的电池的制备装置，通过第一电池单体配置模块配置能量密度较高的第一电池单体111，通过第二电池单体配置模块配置能量密度较低的第二电池单体112，且限定配置的第一电池单体111的第一泄压机构1111和面积大于第二电池单体112的第二泄压机构1121的面积，当第一电池单体111和第二电池单体112发生热失效时，即使第一电池单体111热失效的失效反应比第二电池单体112热失效的失效反应更加剧烈，也能使得失效反应更加剧烈的第一电池单体111通过面积更大的第一泄压机构1111及时有效的释放压力，同时，使得第二电池单体112通过第二泄压机构1121也能及时有效的释放压力，有效缓解第一电池单体111的急速温升，进而有效降低第一电池单体111热失效引发的连锁反应的概率，提升电池11整体的使用安全性。
本实施例提供的电池的制备装置，可以应用到上述实施例中电池的制备方法，也即，上述实施例中的电池的制备方法可以采用本实施例的电池的制备装置具体实施。
综上，本申请提供的电池11、装置、电池的制备方法以及电池的制备装置，通过限定能量密度更高的第一电池单体111的第一泄压机构1111的面积，比能量密度更低的第二电池单体112的第二泄压机构1121的面积，进而使得第一电池单体111和第二电池单体112均能够通过及时有效的释放压力，提升电池11整体的使用安全性。
本说明书中各实施例或实施方式采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分相互参见即可。
在本说明书的描述中，参考术语“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合实施方式或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解： 其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (17)

  1. 一种电池，包括：
    第一电池单体，所述第一电池单体包括第一泄压机构，所述第一泄压机构用于在所述第一电池单体的内部压力或温度达到阈值时致动以泄放所述第一电池单体的内部压力；
    第二电池单体，所述第二电池单体包括第二泄压机构，所述第二泄压机构用于在所述第二电池单体的内部压力或温度达到阈值时致动以泄放所述第二电池单体的内部压力；
    其中，所述第一电池单体的能量密度大于所述第二电池单体的能量密度，且所述第一泄压机构的面积大于所述第二泄压机构的面积。
  2. 根据权利要求1所述的电池，其特征在于，所述第一泄压机构的面积A1与所述第二泄压机构的面积A2的比值满足：1.5≤A1/A2≤4。
  3. 根据权利要求1或2所述的电池，其特征在于，所述第一电池单体的能量密度E1与所述第二电池单体的能量密度E2的比值满足：1.26≤E1/E2≤2.14。
  4. 根据权利要求1-3任一项所述的电池，其特征在于，所述第一电池单体和所述第二电池单体以n个第一电池单体、m个第二电池单体的排布方式交替排列，其中n≥，m≥1。
  5. 根据权利要求1-4任一项所述的电池，其特征在于，还包括排放通道，所述排放通道与所述第一泄压机构和/或第二泄压机构相对设置，且所述排放通道被配置为在所述第一泄压机构致动时收集来自所述第一电池单体的排放物，和/或，
    在所述第二泄压机构致动时收集来自所述第二电池单体的排放物。
  6. 根据权利要求5所述的电池，其特征在于，所述排放通道设置为至少两条，各所述排放通道相互隔离设置，所述第一泄压机构与所述第二泄压机构分别与不同的所述排放通道相对设置。
  7. 根据权利要求5或6所述的电池，其特征在于，所述第一电池单体设置为至少两个，相邻两个所述第一电池单体的第一泄压机构分别与不同的所述排放通道相对设置；和/或，
    所述第二电池单体设置为至少两个，相邻两个所述第二电池单体的第二泄压机构分别与不同的所述排放通道相对设置。
  8. 根据权利要求5-7任一项所述的电池，其特征在于，所述电池还包括箱体，所述箱体具有多个壁，所述多个壁用于围合形成容纳所述第一电池单体和第二电池单体的容纳腔，所述多个壁中的至少一个壁具有中空内腔，所述中空内腔用于形成所述排放通道。
  9. 根据权利要求8所述的电池，其特征在于，所述多个壁包括底壁，所述底壁用于支撑所述第一电池单体和第二电池单体，所述底壁具有所述中空内腔。
  10. 根据权利要求8或9所述的电池，其特征在于，所述至少一个壁被构造成在所述第一泄压机构和/或第二泄压机构致动时被破坏，以使来自所述第一电池单体和/或第二电池单体的排放物穿过所述至少一个壁进入相应的所述排放通道。
  11. 根据权利要求8或9所述的电池，其特征在于，所述至少一个壁设有第一通孔，所述第一通孔被构造成与所述排放通道连通，以在所述第一电池单体和/或第二电池单体致动时来自所述第一电池单体和/或第二电池单体的排放物经由所述第一通孔进入相应的所述排放通道。
  12. 根据权利要求8-11任一项所述的电池，其特征在于，所述电池还包括热管理部件，用于容纳流体以给所述第一电池单体和第二电池单体调节温度，所述热管理部件设置于所述第一电池单体和第二电池单体与所述至少一个壁之间，所述热管理部件被构造成在所述第一泄压机构和/或第二泄压机构致动时被破坏，以使所述流体流出。
  13. 根据权利要求12所述的电池，其特征在于，所述热管理部件设有第二通孔，所述第二通孔被构造成与所述排放通道连通，以在所述第一泄压机构和/或第二泄压机构致动时来自所述第一电池单体和/或第二电池单体的排放物经由所述第二通孔进入相应的所述排放通道。
  14. 根据权利要求13所述的电池，其特征在于，所述第二通孔经由所述第一通孔与所述排放通道连通。
  15. 一种装置，其特征在于，包括权利要求1-14任一项所述的电池，所述电池用于提供电能。
  16. 一种电池的制备方法，其特征在于，包括如下步骤：
    配置第一电池单体，所述第一电池单体包括第一泄压机构，所述第一泄压机构用于在所述第一电池单体的内部压力或温度达到阈值时致动以泄放第一电池单体的内部压力；
    配置第二电池单体，所述第二电池单体包括第二泄压机构，所述第二泄压机构用于在所述第二电池单体的内部压力或温度达到阈值时致动以泄放所述第二电池单体的内部压力；
    其中，所述第一电池单体的能量密度大于所述第二电池单体的能量密度，且所述第一泄压机构的面积大于所述第二泄压机构的面积。
  17. 一种电池的制备装置，其特征在于，包括：
    第一电池单体配置模块，用于配置第一电池单体，所述第一电池单体包括第一泄压机构，所述第一泄压机构用于在所述第一电池单体的内部压力或温度达到阈值时致动以泄放第一电池单体的内部压力；
    第二电池单体配置模块，用于配置第二电池单体，所述第二电池单体包括第二泄压机构，所述第二泄压机构用于在所述第二电池单体的内部压力或温度达到阈值时致动以泄放所述第二电池单体的内部压力；
    其中，所述第一电池单体的能量密度大于所述第二电池单体的能量密度，且所述第一泄压机构的面积大于所述第二泄压机构的面积。
PCT/CN2020/119737 2020-09-30 2020-09-30 电池、装置、电池的制备方法以及制备装置 Ceased WO2022067809A1 (zh)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR1020227021104A KR102911132B1 (ko) 2020-09-30 2020-09-30 배터리, 장치, 배터리 제조 방법 및 배터리 제조 장치
PCT/CN2020/119737 WO2022067809A1 (zh) 2020-09-30 2020-09-30 电池、装置、电池的制备方法以及制备装置
CN202080104131.8A CN116114113B (zh) 2020-09-30 2020-09-30 电池、装置、电池的制备方法以及制备装置
EP20955829.5A EP4064435A4 (en) 2020-09-30 2020-09-30 BATTERY, DEVICE AND MANUFACTURING METHOD AND DEVICE FOR MANUFACTURING A BATTERY
CN202510051091.XA CN119864587B (zh) 2020-09-30 2020-09-30 电池、装置、电池的制备方法以及制备装置
JP2022539699A JP7674361B2 (ja) 2020-09-30 2020-09-30 電池、装置、電池の製造方法及び製造装置
US17/985,813 US12002984B2 (en) 2020-09-30 2022-11-11 Battery, apparatus, and preparation method and preparation apparatus of battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/119737 WO2022067809A1 (zh) 2020-09-30 2020-09-30 电池、装置、电池的制备方法以及制备装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/985,813 Continuation US12002984B2 (en) 2020-09-30 2022-11-11 Battery, apparatus, and preparation method and preparation apparatus of battery

Publications (1)

Publication Number Publication Date
WO2022067809A1 true WO2022067809A1 (zh) 2022-04-07

Family

ID=80949447

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/119737 Ceased WO2022067809A1 (zh) 2020-09-30 2020-09-30 电池、装置、电池的制备方法以及制备装置

Country Status (6)

Country Link
US (1) US12002984B2 (zh)
EP (1) EP4064435A4 (zh)
JP (1) JP7674361B2 (zh)
KR (1) KR102911132B1 (zh)
CN (2) CN119864587B (zh)
WO (1) WO2022067809A1 (zh)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11901555B2 (en) 2021-07-30 2024-02-13 Contemporary Amperex Technology Co., Limited Battery module, battery pack, and electric apparatus
US11990592B2 (en) 2020-11-17 2024-05-21 Contemporary Amperex Technology Co., Limited Battery, apparatus using battery, and manufacturing method and manufacturing device of battery
US12002984B2 (en) 2020-09-30 2024-06-04 Contemporary Amperex Technology Co., Limited Battery, apparatus, and preparation method and preparation apparatus of battery
US12034176B2 (en) 2020-09-30 2024-07-09 Contemporary Amperex Technology Co., Limited Battery, apparatus, and preparation method and preparation apparatus of battery
US12068468B2 (en) 2020-12-24 2024-08-20 Contemporary Amperex Technology Co., Limited Battery module and manufacturing method and device thereof, battery pack, and power consumption apparatus
US12176509B2 (en) 2020-09-30 2024-12-24 Contemporary Amperex Technology (Hong Kong) Limited Battery, apparatus, and preparation method and preparation apparatus of battery
JP2025518815A (ja) * 2022-06-23 2025-06-19 ビーワイディー カンパニー リミテッド バッテリ・パックおよび車両

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118476105A (zh) * 2022-09-19 2024-08-09 宁德时代新能源科技股份有限公司 电池单体、电池及用电装置
KR102795117B1 (ko) * 2023-03-31 2025-04-10 삼성에스디아이 주식회사 배터리 모듈
KR20250014788A (ko) * 2023-07-21 2025-02-03 삼성에스디아이 주식회사 배터리 팩
KR20250064203A (ko) * 2023-11-02 2025-05-09 주식회사 엘지에너지솔루션 배터리 팩
CN119518223B (zh) * 2025-01-17 2025-06-03 宁德时代新能源科技股份有限公司 电池装置、储能装置及用电装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104126238A (zh) * 2012-09-24 2014-10-29 三洋电机株式会社 封闭式二次电池
CN110065414A (zh) * 2018-01-23 2019-07-30 通用汽车环球科技运作有限责任公司 具有混合电池组和人机界面的车辆及监测方法
JP2020035692A (ja) * 2018-08-31 2020-03-05 トヨタ自動車株式会社 電池
CN111106277A (zh) * 2018-12-29 2020-05-05 宁德时代新能源科技股份有限公司 电池包

Family Cites Families (144)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3365577B2 (ja) 1994-05-27 2003-01-14 松下電器産業株式会社 密閉形ニッケル−水素蓄電池の単電池および単位電池
JP3683181B2 (ja) * 2000-03-30 2005-08-17 日本碍子株式会社 リチウム二次電池
JP2002358966A (ja) 2001-06-04 2002-12-13 Hitachi Ltd リチウム二次電池正極板及びリチウム二次電池
JP2003174734A (ja) 2001-12-06 2003-06-20 Shin Kobe Electric Mach Co Ltd ハイブリッド二次電池
JP4738730B2 (ja) 2003-04-21 2011-08-03 株式会社マキタ 組電池及び電池パック
JP2005071917A (ja) 2003-08-27 2005-03-17 Toyota Motor Corp 電池カバーおよびそのカバーを含む二次電池
JP5217076B2 (ja) 2005-02-04 2013-06-19 Ｔｄｋ株式会社 リチウムイオン組電池
JP4977979B2 (ja) 2005-08-23 2012-07-18 トヨタ自動車株式会社 組電池の設計方法、製造方法、及び組電池
JP2007095354A (ja) 2005-09-27 2007-04-12 Sanyo Electric Co Ltd 非水電解質二次電池の充放電方法
US20080067972A1 (en) 2006-09-15 2008-03-20 Norio Takami Power supply system and motor car
JP5100143B2 (ja) 2007-02-05 2012-12-19 三洋電機株式会社 電池ユニット
JP4358245B2 (ja) 2007-03-09 2009-11-04 レノボ・シンガポール・プライベート・リミテッド 電池パックおよび携帯式電子機器
WO2008142811A1 (ja) 2007-05-18 2008-11-27 Panasonic Corporation 組電池、及び電池システム
JP2009021223A (ja) 2007-06-11 2009-01-29 Panasonic Corp 電池パックおよび電池搭載機器
JP5401035B2 (ja) 2007-12-25 2014-01-29 日立ビークルエナジー株式会社 リチウムイオン二次電池
JP5181743B2 (ja) 2008-03-11 2013-04-10 パナソニック株式会社 電力供給機器とそれを用いた電子機器
JPWO2009147854A1 (ja) 2008-06-04 2011-10-27 パナソニック株式会社 組電池
CN101409369A (zh) 2008-11-14 2009-04-15 东莞市迈科科技有限公司 大容量高功率聚合物磷酸铁锂动力电池及其制备方法
CN101504977B (zh) 2009-03-19 2012-05-16 东莞新能源科技有限公司 多电池电源系统
JP2010250984A (ja) 2009-04-10 2010-11-04 Sanyo Electric Co Ltd 車両用のバッテリシステム
CN101635372B (zh) 2009-06-04 2011-04-27 周金平 锂离子动力电池
US9083065B2 (en) 2009-08-02 2015-07-14 Revision Electronics & Power Systems Incorporated Self heating battery system
US9093726B2 (en) * 2009-09-12 2015-07-28 Tesla Motors, Inc. Active thermal runaway mitigation system for use within a battery pack
JP5466906B2 (ja) 2009-09-18 2014-04-09 パナソニック株式会社 電池モジュール
DE102009046385A1 (de) 2009-11-04 2011-05-05 SB LiMotive Company Ltd., Suwon Batterie mit Entgasungssystem und Verfahren zum Abführen von Austretungen
WO2011114349A2 (en) 2010-03-15 2011-09-22 Mahindra Reva Electric Vehicles Pvt. Ltd Hybrid battery pack
CN201749897U (zh) 2010-05-27 2011-02-16 方正强 电池组装置
DE102010024235B4 (de) 2010-06-18 2016-11-10 Continental Automotive Gmbh Akkumulatorzelle und Batterie
US8399114B2 (en) * 2010-07-30 2013-03-19 Panasonic Corporation Battery module
TW201214919A (en) 2010-09-24 2012-04-01 Lite On Clean Energy Technology Corp Hybrid battery module and battery management method
JP5520320B2 (ja) 2010-11-05 2014-06-11 パナソニック株式会社 電池モジュール
JP5573630B2 (ja) 2010-11-23 2014-08-20 株式会社デンソー 電池システム
JP5852092B2 (ja) 2011-02-28 2016-02-03 三洋電機株式会社 電池モジュールおよび電池モジュールの製造方法
JP2014112463A (ja) 2011-03-25 2014-06-19 Sanyo Electric Co Ltd パック電池
RU2555863C2 (ru) 2011-04-07 2015-07-10 Ниссан Мотор Ко., Лтд. Укладывающее электроды стопкой устройство и способ укладывания электродов стопкой
JP5891604B2 (ja) 2011-04-28 2016-03-23 トヨタ自動車株式会社 電池システム
JP2013025882A (ja) * 2011-07-15 2013-02-04 Toshiba Corp 二次電池
JP6138688B2 (ja) 2011-08-26 2017-05-31 三洋電機株式会社 電源装置及びこれを備える車両並びに蓄電装置
CN202308227U (zh) 2011-11-02 2012-07-04 佛山市顺德区精进能源有限公司 一种适应低温环境的电池组合
JP5903607B2 (ja) 2011-11-11 2016-04-13 パナソニックＩｐマネジメント株式会社 電池パック
US9735406B2 (en) 2011-12-28 2017-08-15 Panasonic Intellectual Property Management Co., Ltd. Battery pack
CN103311562B (zh) 2012-03-12 2015-06-03 联想(北京)有限公司 一种充电电池及其充电控制方法和放电控制方法
US20140186659A1 (en) 2012-03-14 2014-07-03 Energy Power Systems, LLC Hybrid battery system for electric and hybrid electric vehicles
JP6004700B2 (ja) 2012-03-30 2016-10-12 新日鐵住金ステンレス株式会社 二相ステンレス鋼を合わせ材とするクラッド鋼板およびその製造方法
JP2015133169A (ja) 2012-04-27 2015-07-23 三洋電機株式会社 電源装置及びこれを備える車両並びに蓄電装置
DE102012215495A1 (de) 2012-08-31 2014-03-06 Robert Bosch Gmbh Vorrichtung für eine Reihenschaltung mit einer Batteriezelle, Batterie, Kraftfahrzeug und Verfahren zum Ersetzen einer Batteriezelle eines Batteriemoduls durch eine andere Batteriezelle
US9159964B2 (en) 2012-09-25 2015-10-13 Front Edge Technology, Inc. Solid state battery having mismatched battery cells
JP2014072025A (ja) 2012-09-28 2014-04-21 Panasonic Corp 非水電解質二次電池及びその製造方法
WO2014081459A1 (en) 2012-11-22 2014-05-30 Eaton Corporation Energy harvesting circuit for life-sensing hose assembly
US9189056B2 (en) * 2012-12-26 2015-11-17 Intel Corporation Mixed cell type battery module and uses thereof
DE102013209069A1 (de) 2013-05-16 2014-11-20 Robert Bosch Gmbh Batteriebaugruppe einer Batterie mit zwei verschiedenen Zellarten
JP2015018706A (ja) 2013-07-11 2015-01-29 株式会社豊田自動織機 蓄電装置モジュール
US9889751B2 (en) 2013-07-30 2018-02-13 Lg Chem, Ltd. Battery management apparatus and method
JP6119516B2 (ja) 2013-09-02 2017-04-26 ソニー株式会社 組電池および電動車両
US9882197B2 (en) 2013-10-11 2018-01-30 Ec Power, Llc All climate battery and manufacturing and using the same
US10128528B2 (en) 2014-01-02 2018-11-13 Johnson Controls Technology Company Combinatorial chemistries for matching multiple batteries
US9997816B2 (en) 2014-01-02 2018-06-12 Johnson Controls Technology Company Micro-hybrid battery module for a vehicle
JP2015170591A (ja) 2014-03-07 2015-09-28 永浦 千恵子 集合電池
US9705151B2 (en) 2014-03-28 2017-07-11 Infineon Technologies Ag Battery, a battery element and a method for forming a battery
JP2015204247A (ja) 2014-04-16 2015-11-16 住友電気工業株式会社 蓄電デバイス
US20150303538A1 (en) 2014-04-17 2015-10-22 Cyntec Co., Ltd. Compact battery with high energy density and power density
JP6427941B2 (ja) 2014-04-30 2018-11-28 株式会社Ｇｓユアサ 蓄電装置
DE102014210572A1 (de) 2014-06-04 2015-12-17 Mahle International Gmbh Temperiervorrichtung zum Temperieren einer Batterie
DE102014210570A1 (de) 2014-06-04 2015-12-17 Mahle International Gmbh Temperiervorrichtung zum Temperieren einer Batterie
WO2016001853A1 (en) 2014-07-03 2016-01-07 Koninklijke Philips N.V. Image reconstruction for mri using multiplexed sensitivity-encoding
AU2015313241B2 (en) 2014-09-10 2018-07-12 Kabushiki Kaisha Toshiba Wound electrode group, electrode group, and non-aqueous electrolyte battery
JP6144658B2 (ja) 2014-10-01 2017-06-07 トヨタ自動車株式会社 車載用電源装置
EP3207578B1 (en) * 2014-10-17 2022-12-14 GP Batteries International Limited Batteries
US20170346089A1 (en) 2014-12-26 2017-11-30 Sanyo Electric Co., Ltd. Battery pack
DE102015203003A1 (de) 2015-02-19 2016-08-25 Robert Bosch Gmbh Batteriespeichersystem mit unterschiedlichen Zelltypen
US11309604B2 (en) 2015-04-13 2022-04-19 Cps Technology Holdings Llc Thermal epoxy and positioning of electrochemical cells
CN106207016B (zh) 2015-05-04 2018-12-04 宁德时代新能源科技股份有限公司 动力电池
KR102307909B1 (ko) 2015-05-08 2021-10-01 삼성에스디아이 주식회사 리튬 전지
AU2016270566A1 (en) 2015-06-04 2018-01-25 Nantenergy, Inc. Hybrid electrochemical cell systems and methods of operation
US9960458B2 (en) 2015-06-23 2018-05-01 Quantumscape Corporation Battery systems having multiple independently controlled sets of battery cells
CN107112603B (zh) 2015-09-16 2019-10-01 株式会社东芝 组电池及电池包
JP6375549B2 (ja) 2015-09-29 2018-08-22 株式会社村田製作所 電力供給システム
JP2017139844A (ja) 2016-02-01 2017-08-10 川崎重工業株式会社 電力貯蔵装置
CN108886122A (zh) * 2016-03-25 2018-11-23 三洋电机株式会社 圆筒形电池
JP6483924B2 (ja) 2016-05-02 2019-03-13 株式会社東芝 リチウムイオン電池パック
EP3261161A1 (en) 2016-06-22 2017-12-27 Siemens Aktiengesellschaft Battery energy storage system
US20180034018A1 (en) * 2016-08-01 2018-02-01 Nio Usa, Inc Battery cell structural integration
CN109478619B (zh) * 2016-08-05 2023-01-06 松下知识产权经营株式会社 电池模块
EP3316391B1 (en) 2016-10-26 2021-05-19 Samsung SDI Co., Ltd. Battery system, base plate for a battery system and electric vehicle
CN206225503U (zh) 2016-11-09 2017-06-06 宝沃汽车（中国）有限公司 电池、具有所述电池的电池组及具有所述电池组的电池包
US20180138478A1 (en) * 2016-11-14 2018-05-17 Anhui Xinen Technology Co., Ltd. Alleviating explosion propagation in a battery module
WO2018131221A1 (ja) 2017-01-13 2018-07-19 株式会社村田製作所 電池トレイ用フタ、フタ付き電池トレイおよび電池の製造方法
CN206567773U (zh) 2017-03-20 2017-10-20 马鞍山活力电动科技有限公司 一种电池模组组装作业90°翻转装置
CN107256971A (zh) 2017-05-23 2017-10-17 马鞍山活力电动科技有限公司 一种软包三元动力电池及其制备方法
US10153636B1 (en) 2017-05-26 2018-12-11 Kitty Hawk Corporation Electric vehicle hybrid battery system
DE202017104111U1 (de) 2017-07-10 2018-10-15 Kuka Industries Gmbh Fertigungstechnik zur Herstellung von Batteriemodulen und zugehörige Fertigungsstation
DE102017212223A1 (de) 2017-07-18 2019-01-24 Bayerische Motoren Werke Aktiengesellschaft Batterie eines elektrisch angetriebenen kraftfahrzeugs
US10930910B2 (en) * 2017-08-22 2021-02-23 Toyota Jidosha Kabushiki Kaisha Power storage module
DE102017215538A1 (de) 2017-09-05 2019-03-07 Robert Bosch Gmbh Batteriezelle, Batteriemodul und Verwendung eines solchen Batteriemoduls
CN109599632B (zh) 2017-09-30 2020-11-20 比亚迪股份有限公司 车载电池的温度调节方法和温度调节系统
CN111492503A (zh) 2017-12-19 2020-08-04 三洋电机株式会社 电源装置和电源装置用的分隔件
US11024901B2 (en) 2018-01-19 2021-06-01 Hanon Systems Battery cooling plate with integrated air vents
US10434894B2 (en) 2018-01-23 2019-10-08 Gm Global Technology Operations Llc. Vehicle battery pack assembly
JP2019139879A (ja) 2018-02-07 2019-08-22 株式会社デンソー 熱交換装置
EP3530516B1 (en) 2018-02-23 2022-07-06 Ningbo Geely Automobile Research & Development Co. Ltd. Electrical battery system
CN111937226A (zh) 2018-03-30 2020-11-13 三洋电机株式会社 电源装置、具有该电源装置的电动车辆以及蓄电装置
KR102312416B1 (ko) 2018-04-04 2021-10-12 주식회사 엘지에너지솔루션 배터리 모듈
CN108598598A (zh) 2018-04-17 2018-09-28 浙江南都电源动力股份有限公司 一种高比能高功率的锂电池及其制造方法
CN110497950B (zh) 2018-05-18 2022-04-01 富泰华工业（深圳）有限公司 无动力挡停机构
US10573859B2 (en) 2018-07-03 2020-02-25 Daniel Francis Roddy Portable modular energy storage
WO2020026973A1 (ja) * 2018-07-31 2020-02-06 パナソニックＩｐマネジメント株式会社 電池モジュール、及び電池パック
CN208507849U (zh) 2018-08-10 2019-02-15 宁德时代新能源科技股份有限公司 电池模组装配装置
US10855097B2 (en) 2018-08-18 2020-12-01 Dell Products, L.P. System and method for temperature-adaptive thermal management using different temperature-optimized battery cells
CN110265591B (zh) 2018-08-31 2020-01-24 宁德时代新能源科技股份有限公司 电池模组
CN208674305U (zh) 2018-09-04 2019-03-29 东莞塔菲尔新能源科技有限公司 一种电池模组
DE102018122080A1 (de) * 2018-09-11 2020-03-12 Webasto SE Batteriemodul und Verfahren zum Herstellen eines Batteriemoduls
KR102353367B1 (ko) 2018-09-28 2022-01-18 주식회사 엘지에너지솔루션 배터리 셀 조립체, 이러한 배터리 셀 조립체를 포함하는 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차
US11393643B2 (en) * 2018-09-28 2022-07-19 Taiyo Yuden Co., Ltd. Electrochemical device and method of producing the same
CN110265627B (zh) 2018-09-28 2020-09-29 宁德时代新能源科技股份有限公司 正极极片及锂离子二次电池
US10661679B2 (en) 2018-10-26 2020-05-26 Premergy, Inc. Multiple chemistry battery systems for electric vehicles
CN209183604U (zh) 2018-12-27 2019-07-30 宁德时代新能源科技股份有限公司 电池箱
CN209071461U (zh) * 2018-12-28 2019-07-05 宁德时代新能源科技股份有限公司 热管理装置及电池包
CN110190212B (zh) * 2018-12-29 2020-02-04 比亚迪股份有限公司 动力电池包及车辆
CN111106278B (zh) 2018-12-29 2021-02-12 宁德时代新能源科技股份有限公司 电池包
CN109782182B (zh) * 2019-01-14 2021-08-03 深圳大学 一种串联电池组能量状态在线估计方法和装置
CN109659465A (zh) 2019-01-30 2019-04-19 哈尔滨格瑞赛科新能源有限公司 一种电动汽车动力电池系统用的电池串模块
CN111668408B (zh) 2019-03-08 2022-03-15 比亚迪股份有限公司 电池托盘、动力电池包以及车辆
CN111668409B (zh) 2019-03-08 2021-12-07 比亚迪股份有限公司 电池托盘、动力电池包及车辆
CN110048151B (zh) 2019-04-23 2022-03-15 深圳市麦格米特控制技术有限公司 一种电池包的组装方法、装置、电子设备及存储介质
CN110380144B (zh) 2019-06-12 2020-06-23 长沙理工大学 一种退役磷酸铁锂和三元锂电池混合协调控制方法及系统
CN210040332U (zh) 2019-07-22 2020-02-07 宁德时代新能源科技股份有限公司 缓冲构件及电池模组
CN110456275A (zh) 2019-08-26 2019-11-15 东莞塔菲尔新能源科技有限公司 一种判断电芯析锂的方法及系统
CN210403875U (zh) 2019-08-29 2020-04-24 惠州比亚迪实业有限公司 电池模组、动力电池包和车辆
CN110444835B (zh) 2019-08-29 2021-07-20 蜂巢能源科技有限公司 电池包和车辆
US11799167B2 (en) 2019-09-05 2023-10-24 Samsung Sdi Co., Ltd. Energy storage module having extinguisher sheet
CN111900294A (zh) 2019-10-17 2020-11-06 朱大超 一种电池防护系统
CN110739424A (zh) * 2019-10-28 2020-01-31 广州小鹏汽车科技有限公司 一种电池箱和一种电池箱热失控监控方法
CN211295236U (zh) 2020-02-27 2020-08-18 欣旺达电动汽车电池有限公司 电池模组
CN211629259U (zh) 2020-04-20 2020-10-02 蜂巢能源科技有限公司 电池包的冷却系统
CN111584792B (zh) 2020-04-21 2022-11-29 重庆金康动力新能源有限公司 一种电池模组
CN113594637A (zh) 2020-04-30 2021-11-02 宁德时代新能源科技股份有限公司 电池模组、装置、电池包以及电池模组的制造方法和设备
CN111446488B (zh) 2020-04-30 2025-02-18 宁德时代新能源科技股份有限公司 一种二次电池及其装置
KR102547068B1 (ko) 2020-06-15 2023-06-23 삼성에스디아이 주식회사 배터리 팩과, 배터리 팩을 포함하는 배터리 모듈과, 배터리 모듈을 포함하는 전원 공급 장치
EP4064436A4 (en) 2020-09-30 2023-05-03 Contemporary Amperex Technology Co., Limited BATTERY, DEVICE AND METHOD OF MANUFACTURE AND DEVICE FOR A BATTERY
JP7466656B2 (ja) 2020-09-30 2024-04-12 寧徳時代新能源科技股▲分▼有限公司 電池、装置、電池の製造方法及び製造装置
CN119864587B (zh) 2020-09-30 2025-10-14 宁德时代新能源科技股份有限公司 电池、装置、电池的制备方法以及制备装置
EP4064421A4 (en) 2020-11-17 2023-09-13 Contemporary Amperex Technology Co., Limited BATTERY, DEVICE USING BATTERY, AND METHOD AND DEVICE FOR PREPARING BATTERY
WO2022133959A1 (zh) 2020-12-24 2022-06-30 宁德时代新能源科技股份有限公司 电池模组及其制造方法和设备、电池包及用电装置
CN116438697A (zh) 2021-07-30 2023-07-14 宁德时代新能源科技股份有限公司 一种电池组、电池包和用电装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104126238A (zh) * 2012-09-24 2014-10-29 三洋电机株式会社 封闭式二次电池
CN110065414A (zh) * 2018-01-23 2019-07-30 通用汽车环球科技运作有限责任公司 具有混合电池组和人机界面的车辆及监测方法
JP2020035692A (ja) * 2018-08-31 2020-03-05 トヨタ自動車株式会社 電池
CN111106277A (zh) * 2018-12-29 2020-05-05 宁德时代新能源科技股份有限公司 电池包

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4064435A4 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12002984B2 (en) 2020-09-30 2024-06-04 Contemporary Amperex Technology Co., Limited Battery, apparatus, and preparation method and preparation apparatus of battery
US12034176B2 (en) 2020-09-30 2024-07-09 Contemporary Amperex Technology Co., Limited Battery, apparatus, and preparation method and preparation apparatus of battery
US12176509B2 (en) 2020-09-30 2024-12-24 Contemporary Amperex Technology (Hong Kong) Limited Battery, apparatus, and preparation method and preparation apparatus of battery
US11990592B2 (en) 2020-11-17 2024-05-21 Contemporary Amperex Technology Co., Limited Battery, apparatus using battery, and manufacturing method and manufacturing device of battery
US12068468B2 (en) 2020-12-24 2024-08-20 Contemporary Amperex Technology Co., Limited Battery module and manufacturing method and device thereof, battery pack, and power consumption apparatus
US11901555B2 (en) 2021-07-30 2024-02-13 Contemporary Amperex Technology Co., Limited Battery module, battery pack, and electric apparatus
JP2025518815A (ja) * 2022-06-23 2025-06-19 ビーワイディー カンパニー リミテッド バッテリ・パックおよび車両
EP4546532A4 (en) * 2022-06-23 2025-12-10 Byd Co Ltd BATTERY BLOCK AND VEHICLE

Also Published As

Publication number Publication date
US20230070894A1 (en) 2023-03-09
CN116114113A (zh) 2023-05-12
EP4064435A4 (en) 2024-04-24
JP2023509418A (ja) 2023-03-08
KR20220104219A (ko) 2022-07-26
JP7674361B2 (ja) 2025-05-09
CN116114113A8 (zh) 2024-05-24
KR102911132B1 (ko) 2026-01-12
CN116114113B (zh) 2025-02-18
CN119864587B (zh) 2025-10-14
CN119864587A (zh) 2025-04-22
EP4064435A1 (en) 2022-09-28
US12002984B2 (en) 2024-06-04

Similar Documents

Publication Publication Date Title
US12034176B2 (en) Battery, apparatus, and preparation method and preparation apparatus of battery
US12002984B2 (en) Battery, apparatus, and preparation method and preparation apparatus of battery
CN115152080B (zh) 电池、装置、电池的制备方法以及制备装置
KR102686170B1 (ko) 전지 및 그 관련장치, 제조방법 및 제조설비
US12431582B2 (en) Battery cell including pressure relief structure and cover aseembly having first recessed portion, manufacturing method and manufacturing system therefor, battery and electric device
JP2022543344A (ja) 電池、電力消費機器、電池の製造方法及び装置
KR102820868B1 (ko) 배터리의 박스 본체, 배터리, 전기 장치, 배터리 제조 방법 및 장치
CN118556325A (zh) 电池和用电设备
CN218939874U (zh) 电池及用电装置
WO2023173721A1 (zh) 电池单体、电池模组、电池和用电装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20955829

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20227021104

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2022539699

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2020955829

Country of ref document: EP

Effective date: 20220624

WWE Wipo information: entry into national phase

Ref document number: 202080104131.8

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

WWG Wipo information: grant in national office

Ref document number: 202080104131.8

Country of ref document: CN

WWR Wipo information: refused in national office

Ref document number: 1020227021104

Country of ref document: KR

WWR Wipo information: refused in national office

Ref document number: 1020227021104

Country of ref document: KR

WWC Wipo information: continuation of processing after refusal or withdrawal

Ref document number: 1020227021104

Country of ref document: KR