WO2015149275A1 - 动力电池及其电芯状态采集装置 - Google Patents

动力电池及其电芯状态采集装置 Download PDF

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Publication number
WO2015149275A1
WO2015149275A1 PCT/CN2014/074526 CN2014074526W WO2015149275A1 WO 2015149275 A1 WO2015149275 A1 WO 2015149275A1 CN 2014074526 W CN2014074526 W CN 2014074526W WO 2015149275 A1 WO2015149275 A1 WO 2015149275A1
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WO
WIPO (PCT)
Prior art keywords
interface
battery
side wall
collecting device
metal
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/CN2014/074526
Other languages
English (en)
French (fr)
Inventor
龚蜀刚
陈运
吴少波
黄涛
李薇
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.)
Shenzhen Zhilun Driving Technology for Electric Vehicle Co Ltd
Original Assignee
Shenzhen Zhilun Driving Technology for Electric Vehicle 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 Shenzhen Zhilun Driving Technology for Electric Vehicle Co Ltd filed Critical Shenzhen Zhilun Driving Technology for Electric Vehicle Co Ltd
Priority to PL14888110T priority Critical patent/PL3128599T3/pl
Priority to US15/300,429 priority patent/US10811734B2/en
Priority to EP14888110.5A priority patent/EP3128599B1/en
Priority to PCT/CN2014/074526 priority patent/WO2015149275A1/zh
Priority to JP2016560754A priority patent/JP6353070B2/ja
Priority to CN201480076822.6A priority patent/CN106233526B/zh
Priority to ES14888110T priority patent/ES2721653T3/es
Priority to KR1020167029087A priority patent/KR102006529B1/ko
Publication of WO2015149275A1 publication Critical patent/WO2015149275A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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
    • H01M10/4285—Testing apparatus
    • 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
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/302—Temperature sensors
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
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    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the invention belongs to the field of electric vehicle power batteries, and particularly relates to a battery core state collecting device and a power battery using the same.
  • Electric vehicles are mainly powered by power batteries. Since the power and current required by the electric vehicle are large, the existing power battery generally has a plurality of batteries connected in series, and then the plurality of batteries are connected in parallel and finally packaged.
  • the battery core is generally a relatively small rechargeable battery.
  • the side and bottom surfaces of the battery core are generally negative electrodes.
  • the top end of the battery core is generally provided with a metal cap, which is generally the positive electrode of the battery core. Since the battery core is a flammable and explosive material, during the use of the power battery, it is necessary to monitor the temperature, voltage and other state parameters at any time, and control its charge and discharge to prevent danger.
  • the signal acquisition module needs to collect the state signal of the battery core, and then the signal collected by the signal acquisition module is processed by the signal processing module to obtain the processing result, and then the processing result of the signal processing module is transmitted through the communication module.
  • the main control module of the electric vehicle To the main control module of the electric vehicle to achieve the ability to monitor the cells of the power battery in real time.
  • the signal acquisition module and the signal processing module and the communication module of the prior art electric vehicle power battery are separately arranged and connected by wires, and the number of wire connections is long and long, which is not only difficult to be wired, but also hinders heat dissipation of the cells in the power battery.
  • the object of the present invention is to provide a battery state collection device, which aims to solve the problem that the signal acquisition module of the power battery of the prior art is separated from the signal processing module and the communication module, and is connected by wires, and the number of wire connections is long and long. Not only is it difficult to route, but it also hinders the problem of heat dissipation of the cells in the power battery.
  • a battery state acquisition device configured to collect a monitoring battery state signal, including a collection board assembly disposed between adjacent cells in series, and a fixed adjacent one in series a first interface of a bottom surface of the battery cell, a second interface fixed to a top end of another of the battery cells adjacent to the series, and a connection socket connecting the first interface and the second interface; the first interface And the second interface is oppositely inserted into the connector;
  • the acquisition board assembly includes a PCB board, a signal processing module mounted on the PCB board, a communication module mounted on the PCB board, and a matching a fixing block inserted in the first interface;
  • the PCB board has a connecting portion insertable in the first interface, the fixing block is mounted on the connecting portion, and the fixing block is A signal acquisition module for collecting the battery state signal corresponding to the second interface is installed.
  • Another object of the present invention is to provide a power battery including a plurality of batteries, and further comprising a battery state collecting device as described above, the battery cells being mounted on the battery state collecting device.
  • FIG. 1 is a schematic perspective structural view of a battery state collection device according to an embodiment of the present invention, and shows a connection state of a plurality of sets of battery cells;
  • FIG. 2 is a schematic exploded view of the cell state collecting device of FIG. 1;
  • Figure 3 is a schematic enlarged view of the portion 11A of Figure 2;
  • Figure 4 is a front elevational view of the cell of Figure 2, the first interface and the second interface are also shown;
  • Figure 5 is a schematic enlarged view of the first interface of Figure 4.
  • Figure 6 is an enlarged schematic structural view of the second interface of Figure 4.
  • Figure 7 is a schematic enlarged view of the assembly of the acquisition board of Figure 2;
  • Figure 8 is a top plan view of the assembly of the acquisition board of Figure 7;
  • Figure 9 is a cross-sectional structural view of the connector of Figure 2.
  • Figure 10 is a perspective enlarged structural view of the insulating housing of the connector of Figure 9;
  • Figure 11 is a perspective enlarged structural view of the connecting electrode of the connector of Figure 9;
  • FIG. 12 is a perspective enlarged structural view of a lead electrode in the connector of FIG. 9.
  • FIG. 12 is a perspective enlarged structural view of a lead electrode in the connector of FIG. 9.
  • an embodiment of the present invention provides a battery state collection device 11 for collecting a state signal of a monitoring battery 119 , which includes an acquisition board assembly 113 , a first interface 111 , and a first Two interfaces 112 and a connector 115.
  • the first interface 111 is fixed on the bottom surface of the battery core 119 as the negative pole of the battery core 119; the second interface 112 is fixed on the top end of the battery core 119 as the positive pole of the battery core 119; when two battery cores 119 need to be connected in series
  • the first interface 111 on one of the batteries 119 is inserted into the connecting base 115, and the second interface 112 of the other core 119 is also inserted into the connecting base 115, an electric power can be made through the connecting base 115.
  • the negative electrode of the core 119 is electrically connected to the positive electrode of the other battery cell 119, that is, the two battery cells 119 are connected in series.
  • the first interface 111 and the second interface are oppositely inserted into the connecting base 115, so that the connecting seat 115 is located between the two batteries 119 connected in series to reduce the volume occupied by the connecting seat 115; and the first interface 111 and the first interface
  • the two interfaces 112 are inserted into the connecting base 115, and the length of the two batteries 119 in series can be shortened correspondingly, that is, the occupied volume is correspondingly reduced.
  • the acquisition board assembly 113 includes a PCB board 1131, a signal processing module 1133, a communication module 1136, and a fixed block 1135.
  • the signal acquisition module 1137 is mounted on the fixed block 1135.
  • the signal processing module 1133 and the communication module 1136 are both mounted on the PCB board 1131; the PCB board 1131 has a connection portion 1132 that can be inserted into the first interface 111.
  • the fixing block 1135 is mounted on the connecting portion 1132 of the PCB board 1131 and can be mated in the first interface 111. That is, the signal processing module 1133, the communication module 1136, and the signal acquisition module 1137 are integrated on the PCB board 1131, which can reduce and shorten the use of the connecting wires, save layout space, thereby increasing the heat dissipation space of the battery core 119, and improving heat dissipation efficiency.
  • the fixed block 1135 can be set to function as a stable signal acquisition module 1137.
  • the fixing block 1135 and the connecting portion 1132 on the PCB board 1131 are respectively inserted into the first interface 111, and then inserted into the connecting base 115 together with the first interface 111, so that the signal collecting module 1137 on the fixed block 1135 can collect the first
  • the status signal of the battery cell 119 corresponding to the second interface 112 is then processed by the signal processing module 1133 on the PCB board 1131, and the processing result is transmitted by the communication module 1136 to the electric vehicle main control module; and the acquisition board assembly 113 can be correspondingly reduced.
  • the volume used for points increases integration and saves layout space.
  • each of the cells 119 is mounted with a first interface 111, and the second interface 112 is mounted on the top end thereof to facilitate connecting the plurality of cells 119 in series, and in each of the plurality of batteries 119 connected in series
  • the collection board assembly 113 is installed between the two to monitor the state of each of the batteries 119 to ensure safe and normal operation of the battery.
  • the signal acquisition module 1137 is integrated with the signal processing module 1133 and the communication module 1136 through the acquisition board assembly 113; and the connection base 115, the first interface 111 and the second interface 112 are disposed, and the battery cells 119 are connected in series, and the collection board is always
  • the 113 is installed between the batteries 119 connected in series, thereby reducing and shortening the use of the connecting wires, saving layout space, thereby increasing the heat dissipation space of the battery core 119 and improving heat dissipation efficiency. And more cells 119 can be placed in the same volume to increase the capacity of the power battery.
  • a plurality of connecting portions 1132 may be disposed on the PCB board 1131, and each of the connecting portions 1132 is mounted with a fixing block 1135.
  • a plurality of pairs of cells 119 to be connected in series can be connected, that is, a pair of two cells 119 connected in series are connected to a fixed block 1135 through the connecting base 115, thereby collecting the state of the plurality of cells 119 through a collecting plate assembly 113.
  • the signal, and the processing of the status signal and the transmission processing result can collect, process and transmit the status signals of the plurality of batteries 119 through a collecting board assembly 113, thereby improving the integration degree, further reducing the use of the wires, and saving layout space.
  • the PCB board 1131 has a long strip shape, and the PCB board 1131 has six connecting portions 1132 arranged along the longitudinal direction thereof, and each of the connecting portions 1132 is provided with a fixing block 1135. Therefore, six pairs of cells 119 that need to be connected in series can be connected side by side, and the state signals of the six cells 119 can be collected, processed, and transmitted, and the six pairs of cells 119 can be conveniently fixed to facilitate the installation of the cells 119.
  • the number of the connecting portions 1132 and the fixing blocks 1135 such as five, seven, and the like, may be disposed on the long strip PCB 1131 to connect a relative number of the paired series cells 119.
  • the PCB board 1131 may also have a triangular shape, a pentagon shape, etc., and the connection portion 1132 is disposed at each corner of the PCB board 1131; the middle portion of the PCB board 1131 may also be rounded, and the connection portion 1132 is provided at its edge; of course, it can be set to other shapes.
  • the connector 115 includes a connection electrode 117 and an insulative housing 116 encasing the connection electrode 117.
  • the connection electrode 117 is configured to electrically connect the first interface 111 and the second interface 112, that is, when the first interface 111 and the second interface 112 are relatively inserted into the connector 115, the first interface 111 and the second interface 112 are connected.
  • the electrodes 117 are connected to electrically connect the first interface 111 and the second interface 112, thereby electrically connecting the first interface 111 and the two batteries 119 corresponding to the second interface 112.
  • the connecting electrode 117 includes a supporting plate 1171, a first side wall 1172 and a second side wall 1173.
  • the first side wall 1172 and the second side wall 1173 are respectively disposed on opposite sides of the supporting plate 1171; wherein the first side wall 1172 is used
  • the first interface 111 is electrically connected to the first sidewall 1172 when the first interface 111 is inserted into the connector 115, and the second sidewall 1173 is used for mating.
  • the second interface 112 is electrically connected to the second sidewall 1173 when the second interface 112 is inserted into the connector 115.
  • the first interface 111 and the second interface 112 are electrically connected. connection.
  • the first sidewalls 1172 are two pieces and are oppositely disposed at opposite ends of the support plate 1171 .
  • the first side wall 1172 is clamped to the opposite outer side of the first interface 111 to improve the stability of the connection, so that the first side wall 1172 can be better electrically connected to the first interface 111.
  • the side of the fixing block 1135 can be fitted against the opposite inner side of the first interface 111 so that when the first interface 111 is inserted into the connecting seat 115, the connection can be made.
  • the seat 115 and the fixed block 1135 clamp the first interface 111 to stabilize the first interface 111.
  • the second sidewall 1173 is disposed at an edge of the support plate 1171. Providing the second side wall 1173 at the edge of the support plate 1171 can correspondingly reduce the volume of the connection electrode 117, thereby reducing the volume of the connection seat 115.
  • the second side wall 1173 is sleeve-shaped and disposed at an intermediate portion of the support plate 1171.
  • a first opening (not shown) is defined in the support plate 1171 at a position corresponding to the second side wall 1173.
  • the second side wall 1173 is sleeved to facilitate insertion of the second interface 112 into the second side wall 1173 so that the second side wall 1173 is in contact with the opposite outer side surface of the second interface 112.
  • a first opening is formed in the support plate 1171, so that the sensor of the signal acquisition module 1137 on the fixed block 1135 can be easily inserted into the second interface 112 to better detect the state of the battery core 119. .
  • the second side wall 1173 includes a constricted section 1174 that is inwardly contracted by the support plate 1171 along the axial direction of the second side wall 1173.
  • the constricted section 1174 is disposed.
  • the second side wall 1173 also includes a guiding section 1175 that is outwardly expanded from the constricted section 1174 in the axial direction of the second side wall 1173.
  • a guide segment 1175 is provided to facilitate insertion of the second interface 112 into the second side wall 1173.
  • a plug 1136 is protruded from the fixing block 1135, and the plug 1136 can be inserted into the second interface 112 through the first opening.
  • the plug 1136 can be disposed against the opposite inner side of the second interface 112, and the second interface 112 can be clamped by the second side wall 1173 and the plug 1136 to facilitate fixing the second interface 112.
  • a probe can also be mounted on the plug 1136 to better detect the state of the cell 119 corresponding to the second interface 112.
  • the signal acquisition module 1137 includes a temperature probe 1139 that detects the temperature of the battery cell 119 corresponding to the second interface 112 .
  • the temperature probe 1139 is mounted on the plug 1136 .
  • the second opening 112 can be inserted into the second interface 112 to be closer to the corresponding battery core 119 of the second interface 112 to more accurately detect the temperature state of the battery core 119. .
  • the signal acquisition module 1137 further includes two probes 1138 for electrically connecting the positive and negative electrodes of the cell 119 corresponding to the second interface 112 to detect the voltage of the cell 119.
  • the two probes 1138 are mounted on the fixed block 1135.
  • the connector 115 further includes a pin electrode 118 connected to the side of the cell 119 corresponding to the second interface 112.
  • the pin electrode 118 is fixed on the insulative housing 116, and the pin electrode 118 is spaced apart from the support plate 1171.
  • One of the two probes 1138 is in contact with the lead electrode 118, the other is in contact with the support plate 1171 of the connection electrode 117, and the connection electrode 117 is electrically connected to the positive electrode of the battery cell 119 corresponding to the second interface 112.
  • the pin electrode 118 is connected to the side of the cell 119, that is, the pin electrode 118 is electrically connected to the negative electrode of the cell 119, and the two probes 1138 are electrically connected to the positive and negative terminals of the cell 119, respectively, to determine the electric current.
  • the voltage of the core 119 is connected to the side of the cell 119, that is, the pin electrode 118 is electrically connected to the negative electrode of the cell 119, and the two probes 1138 are electrically connected to the positive and negative terminals of the cell 119, respectively, to determine the electric current.
  • the voltage of the core 119 is connected to the side of the cell 119, that is, the pin electrode 118 is electrically connected to the negative electrode of the cell 119, and the two probes 1138 are electrically connected to the positive and negative terminals of the cell 119, respectively, to determine the electric current.
  • the voltage of the core 119 is connected to the side of the cell 119, that is, the pin electrode 118 is electrically connected to the negative electrode
  • the lead electrode 118 has an L-shaped cross section, including an insertion section 1181 and an abutting section 1182, and the insertion section 1181 is connected to the abutting section 1182.
  • the abutting portion 1182 is for abutting the side of the corresponding cell 119 of the second interface 112 such that the pin electrode 118 is connected to the negative electrode of the cell 119.
  • the insertion section 1181 is for correspondingly abutting a probe 1138 such that the lead electrode 118 is connected to a probe 1138; the insertion section 1181 is inserted into the insulating housing 116 to fix the lead electrode 118.
  • the insertion section 1181 is located above one side of the support plate 1171 corresponding to the second side wall 1173.
  • a second opening 1177 is defined in the position of the supporting plate 1171 corresponding to a probe 1138.
  • the third opening 1166 of the insulating housing 116 corresponding to the second opening 1177 is formed to expose the partial insertion portion 1181.
  • the portion of the insertion section 1181 located in the third opening 1166 is provided with a first recessed groove 1183 for insertion of the corresponding probe 1138.
  • the first recessed groove 1183 is provided to guide the probe 1138 when the probe 1138 abuts the insertion section 1181 of the lead electrode 118.
  • the provision of the first recessed groove 1183 can also enclose the insertion section 1181 of the lead electrode 118 in the insulative housing 116, making the mounting of the lead electrode 118 more stable.
  • a second recessed groove 1176 for the insertion of the probe 1138 is provided at a position on the support plate 1171 corresponding to the other probe 1138.
  • the insertion portion 1181 of the pin electrode 118 may also be disposed above one side of the support plate 1171 corresponding to the first side wall 1172. If a slit is formed in the first side wall 1172, the gap of the segment 1181 will be inserted. The insertion is made such that the insertion section 1181 is disposed above the support plate 1171, so that the two probes 1138 can also be respectively abutted against the insertion section 1181 of the lead electrode 118 and the support plate 1171 of the connection electrode 117.
  • connection electrode 117 can be formed by metal stamping, which is simple and convenient to manufacture.
  • the lead electrode 118 can be formed by bending a metal plate or by metal stamping.
  • the insulating housing 116 includes a support base 1161, a first side plate 1162 and a second side plate 1163.
  • the first side plate 1162 and the second side plate 1163 are respectively fixed to the opposite sides of the support base 1161. On both sides.
  • the support plate 1171 is mounted on the support base 1161, and the support plate 1171 is supported by the support base 1161 to increase the strength of the support plate 1171.
  • the first side plate 1162 is wrapped on the outer side of the first side wall 1172, and the second side plate 1163 is wrapped on the outer side of the second side wall 1173.
  • the first side plate 1172 and the second side plate 1163 are used to stabilize the first side wall 1172 and
  • the second side wall 1173 is to make the connection of the first interface 111 and the second interface 112 to the connection seat 115 more stable.
  • one side of the insulating housing 116 is further provided with a connecting plug 1164.
  • the opposite side of the insulating housing 116 is provided with a connecting plug 1164 of another insulating housing 116.
  • Socket 1165 By providing the connecting plug 1164 and the socket 1165 on the insulative housing 116, when a plurality of sets of cells 119 connected in series are arranged side by side, a plurality of connecting blocks 115 can be connected to increase the stability of the connection of the cells 119, and the same can be more stable.
  • the connector 115 is installed.
  • the first interface 111 includes a first metal base plate 1111 and two first metal sidewalls 1112 .
  • the first metal base plate 1111 is for fixedly connecting to the bottom surface of the corresponding battery core 119.
  • Two first metal side walls 1112 are for insertion into the connector block 115.
  • the two first metal sidewalls 1112 are oppositely disposed on the first metal base plate 1111.
  • the two first metal sidewalls 1112 have an opening 1114 extending from the connecting portion 1132 of the PCB board 1131.
  • the first metal sidewall 1112 may be perpendicular to the first metal base plate 1111, and may of course have a certain inclination angle with respect to the normal direction of the first metal base plate 1111.
  • An opening 1114 is disposed between the two first metal sidewalls 1112 to extend the connection portion 1132 of the PCB 1131 so that the signal acquisition module 1137 on the fixed block 1135 is electrically connected to the signal processing module 1133 on the PCB 1131.
  • the first metal base plate 1111 is provided with a first through hole 1113 for facilitating fixing the first metal base plate 1111 to the bottom surface of the battery core 119.
  • a first through hole 1113 is defined in the first metal base plate 1111, so that glue, solder, etc. can flow between the first metal base plate 1111 and the bottom surface of the battery core 119 through the first through hole 1113, so as to facilitate the first metal base plate 1111 and The bottom surface of the battery cell 119 is fixed.
  • the first metal base plate 1111 has a circular shape, and the first metal side wall 1112 has an arc shape along a cross section parallel to the first metal base plate 1111.
  • the first metal base plate 1111 is circular, which can be easily adapted to the bottom surface of the battery core 119.
  • the first metal base plate may also have other shapes, such as square, rectangular, and the like.
  • the second interface 112 includes a second metal backplane 1121 and a second metal sidewall 1122.
  • the second metal base plate 1121 is for fixedly connecting to the top end of the corresponding battery cell 119.
  • the second metal sidewall 1122 is for insertion into the connector 115.
  • the second metal sidewall 1122 surrounds the second metal base plate 1121.
  • the second metal base plate 1121 is provided with a second through hole 1123 for facilitating fixing of the second metal base plate 1121 to the top end of the battery core 119.
  • a second through hole 1123 is defined in the second metal base plate 1121, so that glue, solder, etc. can flow between the second metal base plate 1121 and the top end of the battery core 119 through the second through hole 1123, so as to facilitate the second metal base plate 1121 and The battery core 119 is fixed at the top.
  • the second metal base plate 1121 has a circular shape.
  • the second metal base plate 1121 is rounded to facilitate fitting with the top end of the battery core 119.
  • the second metal base plate 1121 can also have other shapes, such as a square, a rectangle, and the like.
  • the second metal sidewall 1122 may be perpendicular to the second metal base plate 1121, and may of course have a certain inclination angle with respect to the normal direction of the second metal base plate 1121.
  • the second metal sidewall 1122 is tapered, and the second metal sidewall 1122 has an outwardly inclined taper along its height direction.
  • the height direction of the second metal sidewall 1122 is perpendicular to the second metal base plate 1121 and away from the second metal base plate 1121.
  • the angle of inclination of the second metal sidewall 1122 and the second metal base plate 1121 may be normal to the contraction section 1174 of the second sidewall 1173 of the connection electrode 117 and the support plate 1171.
  • the tilt angles are set to be the same to further better connect the second metal sidewall 1122 of the second interface 112 with the second sidewall 1173 of the connection electrode 117.
  • the second metal side wall 1122 is provided with a plurality of elongated notches along its height direction. An elongated notch 1124 is disposed on the second metal sidewall 1122. When the second metal sidewall 1122 is inserted into the connector 115, the second metal sidewall 1122 can have a certain inwardly contracting elasticity. The plug is inserted into the connector 115.
  • the invention also provides a power battery comprising a plurality of cells and a cell state acquisition device as described above, the cells being mounted on the cell state acquisition device.
  • the power battery uses the above-mentioned battery state collecting device, correspondingly reduces and shortens the use of connecting wires, saves layout space, and thus can increase the heat dissipation space of the battery core and improve heat dissipation efficiency. And more batteries can be set in the same volume to increase the capacity of the power battery.
  • the power battery using the battery state acquisition device has the following operation modes:
  • the temperature and voltage status of the battery are collected every 5mins during the first 30mins of charging; once every 15mins after charging for 30mins.
  • the temperature and voltage of the battery core are collected once in the first 30mins of charging, and once every 15mins after charging for 30mins.
  • the temperature of the cell was collected once for 10 mins, and after every 30 mins of discharge, it was collected every 15 mins.
  • each cell is not collected in the early stage of discharge.
  • the acquisition board assembly 113 collects a voltage; the power battery's main control MCU analyzes the command, and the voltage is lower than 3.6.
  • the voltage of the V cell, the associated acquisition board assembly 113 is collected every 15 mins.
  • the master MCU of the power battery When the temperature or voltage of a battery cell is abnormal, the master MCU of the power battery immediately sends the abnormal data and its battery address.
  • the signal acquisition module 1137 on the fixed block 1135 of each acquisition board assembly sequentially collects the voltages of the connected cells, and each acquisition time is 4 ms for each cell.
  • the voltage value is collected 10 times for each cell, the average value is calculated (using the calculation formula 2), and the average value is compared with the reference value to determine whether the data is abnormal, and then the 5th sum is taken.
  • the sixth voltage value is calculated as an average value (using Equation 1). (Charging voltage range is 4.05V ⁇ 4.25V, reference value: 4.15V; discharge voltage reference value: 3.0V (2.9V), 3.7V (3.6V))
  • Equation 1 In the 10 data, the maximum value and the minimum value are removed, and the average value is calculated.
  • Equation 2 The 10 data are sorted by size, and the 5th value and the 6th value are taken to calculate an average value.
  • Transmission method acquisition board assembly address code, battery 1 address code, cell 1 temperature value, cell 1 voltage value, cell 2 address code, cell 2 temperature value, cell 2 voltage value, cell 3 address Code, cell 3 temperature value, cell 3 voltage value, cell 4 address code, cell 4 temperature value, cell 4 voltage value, cell 5 address code, cell 5 temperature value, cell 5 voltage value, Cell 6 address code, cell 6 temperature value, cell 6 voltage value, temperature average, voltage average, end code.
  • Abnormal data is sent immediately, and the address code of its battery is sent; the abnormal data is preceded by a warning sign.
  • Receive mode Receive instructions in the form of an interrupt.

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Abstract

一种电芯状态采集装置和使用该电芯状态采集装置的动力电池。电芯状态采集装置（11）包括采集板总成（113）、固定于电芯（119）的底面的第一接口（111）、固定于另一电芯（119）的顶端的第二接口（112）和连接第一接口（111）与第二接口（112）的连接座（115）；采集板总成（113）包括PCB板（1131）、安装于PCB板上的信号处理模块（1133）与通信模块（1136）和配合插装于第一接口（111）中的固定块（1135）；固定块（1135）上安装有用于采集第二接口（112）对应的电芯状态信号的信号采集模块（1137）。通过采集板总成（113）将信号采集模块（1137）与信号处理模块（1133）和通信模块（1136）进行集成，并设置连接座（115）、第一接口（111）和第二接口（112），将采集板总成（113）安装在串联的电芯（119）之间，从而减少和缩短了连接导线的使用，节省了布局空间，进而可以方便电芯的散热。

Description

动力电池及其电芯状态采集装置 技术领域
本发明属于电动汽车动力电池领域，尤其涉及一种电芯状态采集装置及使用该电芯状态采集装置的动力电池。
 背景技术
电动汽车主要是用动力电池供电。由于电动汽车需要的功率、电流较大，因而现有动力电池一般是将多个电芯串联成组，再将多组电芯并联，最后封装而成。电芯一般为相对较小的可充电电池，电芯的侧面及底面一般为负极，电芯的顶端一般设有金属帽，该金属帽一般为电芯的正极。由于电芯为易燃易爆物品，在动力电池使用过程中，要随时监控其温度、电压等状态参数，以及时控制其充放电，防止危险发生。要实时监控各电芯的状态，需要通过信号采集模块采集电芯的状态信号，再通过信号处理模块处理信号采集模块采集的信号，得到处理结果，再经通信模块将信号处理模块的处理结果传至电动汽车主控制模块，以达到实时监控动力电池的各电芯的能力。现有技术电动汽车动力电池的信号采集模块与信号处理模块和通信模块是分离设置，并通过导线相连，导线连接数量多，而且长，不仅难以布线，而且阻碍动力电池中电芯的散热。
技术问题
本发明的目的在于提供一种电芯状态采集装置，旨在解决现有技术的动力电池的信号采集模块与信号处理模块和通信模块是分离设置，并通过导线相连，导线连接数量多，而且长，不仅难以布线，而且阻碍动力电池中电芯的散热的问题。
技术解决方案
本发明是这样实现的，一种电芯状态采集装置，用于采集监控电芯状态信号，包括用于设置在串联相邻电芯之间的采集板总成、固定于串联相邻的一所述电芯的底面的第一接口、固定于串联相邻的另一所述电芯的顶端的第二接口和连接所述第一接口与所述第二接口的连接座；所述第一接口和所述第二接口相对插装于所述连接座中；所述采集板总成包括PCB板、安装于所述PCB板上的信号处理模块、安装于所述PCB板上的通信模块和配合插装于所述第一接口中的固定块；所述PCB板上具有可插装于所述第一接口中的连接部，所述固定块安装于所述连接部上，所述固定块上安装有用于采集所述第二接口对应的所述电芯状态信号的信号采集模块。
本发明的另一目的在于提供一种动力电池，包括若干电芯，还包括如上所述的电芯状态采集装置，所述电芯安装于所述电芯状态采集装置上。
 有益效果
通过采集板总成将信号采集模块与信号处理模块和通信模块进行集成；并设置连接座、第一接口和第二接口，将电芯串联，同时将采集板总成安装在串联的电芯之间，从而减少和缩短了连接导线的使用，节省了布局空间，进而可以增加电芯的散热空间，提高散热效率。并且可以在相同的体积中，设置更多的电芯，增加动力电池的电容量。
附图说明
图1是本发明实施例提供的一种电芯状态采集装置的立体结构示意图，图中还示出了多组串联电芯的连接状态；
图2是图1的电芯状态采集装置的分解结构示意图；
图3是图3是图2中11A部分的放大结构示意图；
图4是图2中电芯的正视结构示意图，图中还示出了第一接口和第二接口；
图5是图4中第一接口的放大结构示意图；
图6是图4中第二接口的放大结构示意图；
图7是图2中采集板总成的放大结构示意图；
图8是图7的采集板总成的俯视结构示意图；
图9是图2中连接座的剖视结构示意图；
图10是图9的连接座中绝缘外壳的立体放大结构示意图；
图11是图9的连接座中连接电极的立体放大结构示意图；
图12是图9的连接座中引脚电极的立体放大结构示意图。
 本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
请参阅图1、图2和图3，本发明实施例提供的一种电芯状态采集装置11，用于采集监控电芯119状态信号，其包括采集板总成113、第一接口111、第二接口112和连接座115。其中，第一接口111固定于电芯119的底面上，作为电芯119的负极；第二接口112固定于电芯119的顶端，作为电芯119的正极；当需要将两个电芯119串联时，将一个电芯119上的第一接口111插装在连接座115上，将另一个电芯119的第二接口112也插装在连接座115上，就可以通过连接座115使一个电芯119的负极与另一个电芯119的正极电连接，即将这两个电芯119串联。第一接口111和第二接口相对插装于连接座115中，则使连接座115位于串联的两个电芯119之间，以减少连接座115占用的体积；而将第一接口111和第二接口112插装在连接座115中，又可以相应地使两个电芯119串联的长度缩短，即相应减少占用的体积。请一并参阅图7和图8，采集板总成113包括PCB板1131、信号处理模块1133、通信模块1136和固定块1135，固定块1135上安装有信号采集模块1137。信号处理模块1133和通信模块1136均安装在PCB板1131上；PCB板1131上具有可插装于第一接口111中的连接部1132。固定块1135安装在PCB板1131的连接部1132上，并且可以配合插装于第一接口111中。即将信号处理模块1133、通信模块1136和信号采集模块1137集成在PCB板1131上，相应地可以减少和缩短了连接导线的使用，节省布局空间，进而增加电芯119的散热空间，提高散热效率。而设置固定块1135，可以起到稳固信号采集模块1137的作用。将固定块1135和PCB板1131上的连接部1132均插装于第一接口111中，再与第一接口111一起插入连接座115中，从而使固定块1135上的信号采集模块1137可以采集第二接口112对应的电芯119的状态信号，然后再经PCB板1131上的信号处理模块1133处理，处理结果由通信模块1136传送至电动汽车主控制模块；还可以相应地减少采集板总成113点用的体积，提高集成度，节约布局空间。本实施例中，每个电芯119的底面均安装有第一接口111，其顶端均安装第二接口112，以方便将多个电芯119串联，并在多个串联的电芯119的每两个之间安装所述采集板总成113，以监控每个电芯119的状态，保证电池的安全、正常运行。
通过采集板总成113将信号采集模块1137与信号处理模块1133和通信模块1136进行集成；并设置连接座115、第一接口111和第二接口112，将电芯119串联，同时将采集板总成113安装在串联的电芯119之间，从而减少和缩短了连接导线的使用，节省了布局空间，进而可以增加电芯119的散热空间，提高散热效率。并且可以在相同的体积中，设置更多的电芯119，增加动力电池的电容量。
进一步地，PCB板1131上可以设置多个连接部1132，每一连接部1132上均安装有固定块1135。这样就可以连接多对需要串联的电芯119，即将一对串联的两个电芯119通过连接座115与一个固定块1135相连，从而通过一个采集板总成113采集多个电芯119的状态信号，并处理该状态信号和传送处理结果，即可以通过一个采集板总成113采集、处理和传送多个电芯119的状态信号，提高集成度，进一步减少导线的使用，节省布局空间。如本实施例中，PCB板1131呈长条状，PCB板1131上沿其长度方向排列有六个连接部1132，每一连接部1132上均对就安装有固定块1135。从而可以并排连接六对需要串联的电芯119，可以采集、处理和传送六个电芯119的状态信号，还可以方便固定该六对电芯119，方便电芯119的安装。当然，该长条状PCB板1131上还可以设置其它数量的连接部1132和固定块1135，如五个、七个等等，以连接相对数量的成对串联电芯119。当然，其它实施例中，PCB板1131也可以呈三角形，五角形等，而将连接部1132设在PCB板1131的各角处；还可以将PCB板1131的中部设为圆形，而将连接部1132设在其边缘；当然还可以设置成其它形状。
请参阅图3、图9和图11，连接座115包括连接电极117和包裹连接电极117的绝缘外壳116。连接电极117用于电连接第一接口111与第二接口112，即当第一接口111和第二接口112相对插装入连接座115中时，第一接口111和第二接口112均与连接电极117相连，从而使第一接口111与第二接口112电连接，进而使第一接口111与第二接口112对应的两个电芯119电连接。连接电极117包括支撑板1171、第一侧壁1172和第二侧壁1173，第一侧壁1172和第二侧壁1173分别设于支撑板1171的相对两面上；其中，第一侧壁1172用于配合抵顶第一接口111的相对外侧面，以便于第一接口111插装入连接座115中时，第一接口111与第一侧壁1172电连接；第二侧壁1173用于配合抵顶第二接口112的相对外侧面，以便于第二接口112插装入连接座115中时，第二接口112与第二侧壁1173电连接；进而使第一接口111与第二接口112电连接。
请参阅图9和图11，第一侧壁1172为两块，且相对设置于支撑板1171的相对两端。通过两块第一侧壁1172配合夹持住第一接口111的相对外侧面，提高连接的稳定性，可以使第一侧壁1172与第一接口111更好地电连接。
请参阅图3、图9和图11，当然，固定块1135的侧面可以配合抵顶住第一接口111的相对内侧面，从而当第一接口111插装入连接座115中时，可以通过连接座115和固定块1135夹持住第一接口111，以稳固第一接口111。
进一步地，第二侧壁1173设于支撑板1171的边缘。将第二侧壁1173设于支撑板1171的边缘，可以相应地减小连接电极117的体积，进而减小连接座115的体积。
第二侧壁1173套筒状，设于支撑板1171的中间部位，支撑板1171上对应第二侧壁1173的位置开设有第一开孔（图中未标出）。将第二侧壁1173设成套筒状，可以方便第二接口112插装入第二侧壁1173内，使第二侧壁1173与第二接口112的相对外侧面接触。请一并参阅图8，在支撑板1171上开设第一开孔，可以方便将固定块1135上的信号采集模块1137的传感器伸入第二接口112中，以更好地探测电芯119的状态。
第二侧壁1173包括收缩段1174，收缩段1174由支撑板1171沿该第二侧壁1173的轴向呈向内收缩状。设置收缩段1174，当第二接口112插装入第二侧壁1173中时，可以卡住第二接口112，防止第二接口112脱落，使第二接口112与第二侧壁1173的连接更稳定。
第二侧壁1173还包括导向段1175，导向段1175由收缩段1174沿该第二侧壁1173的轴向呈向外扩张状。设置导向段1175以方便将第二接口112插装入第二侧壁1173中。
请参阅图2、图7、图9和图11，固定块1135上凸设有插头1136，插头1136可以经第一开孔配合插入第二接口112中。设置插头1136可以抵顶第二接口112的相对内侧面，进而通过第二侧壁1173和插头1136夹持住第二接口112，方便固定第二接口112。另外，还可以在插头1136上安装探头，以更好地探测第二接口112对应的电芯119的状态。请一并参阅图8，如本实施例中，信号采集模块1137包括探测第二接口112对应的电芯119温度的温度探头1139，温度探头1139安装于插头1136上。通过将温度探头1139安装在插头1136上，可以经第一开孔伸入第二接口112中，以更为接近第二接口112对应的电芯119，更准确地探测该电芯119的温度状态。
信号采集模块1137还包括用于与第二接口112对应的电芯119正、负极电连接以探测该电芯119的电压的两个探针1138，两个探针1138安装于固定块1135上。连接座115还包括与第二接口112对应的电芯119侧面相连的引脚电极118，引脚电极118固定于绝缘外壳116上，引脚电极118与支撑板1171间隔设置。将两个探针1138中的一个与引脚电极118相接触，另一个与连接电极117的支撑板1171相接触，而连接电极117与第二接口112对应的电芯119的正极电连接，引脚电极118与该电芯119的侧面相连，即引脚电极118与该电芯119的负极电连接，则两个探针1138分别与该电芯119的正、负极电连接，以测定该电芯119的电压。
引脚电极118的横截面呈L型，包括插入段1181和抵顶段1182，插入段1181和抵顶段1182相连。抵顶段1182用于抵顶第二接口112对应的电芯119的侧面，以使该引脚电极118与电芯119的负极相连。插入段1181用于对应抵顶一探针1138，以使该引脚电极118与一探针1138相连；插入段1181插装于绝缘外壳116中，以便固定该引脚电极118。
本实施例中，插入段1181位于第二侧壁1173对应的支撑板1171的一面的上方。支撑板1171上对应一探针1138的位置开设有第二开孔1177，绝缘外壳116上对应第二开孔1177的位置开设有露出部分插入段1181的第三开孔1166。从而在将采集板总成113的固定块1135插入连接座115中后，固定块1135上的两个探针1138中的一个穿过第二开孔1177，伸入第三开孔1166中并抵顶引脚电极118的插入段1181；而另一探针1138直接抵顶支撑板1171，从而与第二接口112对应的电芯119的负、正极电连接。
插入段1181位于第三开孔1166中的部分设有供相应的探针1138插入的第一凹陷槽1183。设置第一凹陷槽1183，当探针1138抵顶引脚电极118的插入段1181时，可以起到导向作用，以保护探针1138。设置第一凹陷槽1183还可以将引脚电极118的插入段1181卡在绝缘外壳116中，使引脚电极118的安装更稳定。当然，为更好地保护探针1138，支撑板1171上对应另一探针1138的位置设有供该探针1138插入的第二凹陷槽1176。
在其它实施例中，引脚电极118的插入段1181还可以设置在第一侧壁1172对应的支撑板1171的一面的上方，如在第一侧壁1172上开设缝隙，将插入段1181此缝隙中插入，以使插入段1181设于支撑板1171的上方，这样也可以使两个探针1138分别抵顶引脚电极118的插入段1181和连接电极117的支撑板1171。
连接电极117可以使用金属冲压成型，制作简单方便。引脚电极118可以使金属板折弯而成，也可以使用金属冲压成型。
请参阅图3、图9和图10，绝缘外壳116包括支撑座1161、第一侧板1162和第二侧板1163，第一侧板1162和第二侧板1163分别固定于支撑座1161的相对两面上。支撑板1171安装在支撑座1161上，通过支撑座1161支撑住支撑板1171，以增加支撑板1171的强度。第一侧板1162包裹于第一侧壁1172的外侧，第二侧板1163包裹于第二侧壁1173的外侧，通过第一侧板1162和第二侧板1163来稳固第一侧壁1172和第二侧壁1173，以使第一接口111和第二接口112与连接座115的连接更稳定。
请参阅图3、图9和图10，绝缘外壳116的一侧还设有连接插块1164，绝缘外壳116的相对另一侧上设有与另一绝缘外壳116的连接插块1164相配合的插口1165。通过在绝缘外壳116上设置连接插块1164和插口1165，当多组串联的电芯119并排设置时，可以将多个连接座115相连，以增加电芯119连接的稳定性，同样可以更稳固地安装连接座115。
请参阅图3、图4和图5，第一接口111包括第一金属底板1111和两个第一金属侧壁1112。第一金属底板1111用于与相应地电芯119的底面固定相连。两个第一金属侧壁1112用于插装入连接座115中。两个第一金属侧壁1112相对设于第一金属底板1111上，两个第一金属侧壁1112间具有供PCB板1131的连接部1132伸出的开口1114。第一金属侧壁1112可以垂直于第一金属底板1111，当然也可以与第一金属底板1111的法向具有一定的倾角。两个第一金属侧壁1112间设置开口1114，可以使PCB板1131的连接部1132伸出，以便固定块1135上信号采集模块1137与PCB板1131上的信号处理模块1133电连接。
第一金属底板1111上开设有便于将该第一金属底板1111固定在电芯119的底面的第一通孔1113。在第一金属底板1111上开设第一通孔1113，可以将胶液、焊锡等经第一通孔1113，流入第一金属底板1111与电芯119底面之间，方便将第一金属底板1111与电芯119底面固定。
具体地，第一金属底板1111呈圆形，第一金属侧壁1112沿平行于第一金属底板1111的截面呈圆弧状。将第一金属底板1111设为圆形，可以方便与电芯119的底面相适配。在其它实施例中，第一金属底板也可以呈其它形状，如方形、矩形等等。
请参阅图3、图4和图6，第二接口112包括第二金属底板1121和第二金属侧壁1122。第二金属底板1121用于与相应地电芯119的顶端固定相连。第二金属侧壁1122用于插装入连接座115中。第二金属侧壁1122环绕于第二金属底板1121上。
第二金属底板1121上开设有便于将该第二金属底板1121固定在电芯119的顶端的第二通孔1123。在第二金属底板1121上开设第二通孔1123，可以将胶液、焊锡等经第二通孔1123，流入第二金属底板1121与电芯119顶端之间，方便将第二金属底板1121与电芯119顶端固定。
具体地，第二金属底板1121呈圆形。将第二金属底板1121设为圆形，可以方便与电芯119的顶端相适配。在其它实施例中，第二金属底板1121也可以呈其它形状，如方形、矩形等等。
第二金属侧壁1122可以垂直于第二金属底板1121，当然也可以与第二金属底板1121的法向具有一定的倾角。如本实施例中，第二金属侧壁1122呈渐扩状，且第二金属侧壁1122沿其高度方向上具有向外倾斜的锥度。第二金属侧壁1122的高度方向为垂直于第二金属底板1121并且远离该第二金属底板1121的方向。将第二金属侧壁1122设置呈渐扩状，则当第二金属侧壁1122插装入连接座115中时，可以使第二金属侧壁1122卡在连接座115中，增加第二金属侧壁1122与连接座115连接的稳固性。请一并参阅图9，优选地，可以将第二金属侧壁1122与第二金属底板1121法向的倾斜角度与连接电极117的第二侧壁1173的收缩段1174与支撑板1171法向的倾斜角设为相同，以更使第二接口112的第二金属侧壁1122与连接电极117的第二侧壁1173更好地配合相连。
第二金属侧壁1122上沿其高度方向上开设有若干狭长的缺口。在第二金属侧壁1122上设置狭长的缺口1124，当将第二金属侧壁1122插装入连接座115中时，可以使第二金属侧壁1122具有一定的向内的收缩的弹性，方便插装入连接座115中。
本发明还提供一种动力电池，包括若干电芯和如上所述的电芯状态采集装置，电芯安装于电芯状态采集装置上。该动力电池使用了上述电芯状态采集装置，相应地减少和缩短了连接导线的使用，节省了布局空间，进而可以增加电芯的散热空间，提高散热效率。并且可以在相同的体积中，设置更多的电芯，增加动力电池的电容量。
使用该电芯状态采集装置的动力电池，其工作模式如下：
充电模式：
正常充电（0.5C）时，在充电的前30mins，对电芯的温度、电压状态每5mins采集一次；在充电30mins后，每15mins采集一次。
快速充电（1.0C）时，在充电的前30mins，对电芯的温度、电压3mins采集一次，在充电30mins后，每15mins采集一次。
当充电时，当动力电池电压达到290.5V（4.15V*70）后，即每个电芯电压达到4.15V后，若某组串联的电芯的充电电流为200mA时，该组串联的电芯就进入平衡状态。此时，每个电芯电压5mins采集一次。六组或多组充电电流都为200mA时，平衡交替，一次平衡时间为45s。
（备注：充电情况下，电芯一般不会发热，除非电芯出现异常）
放电模式：
在放电的前30mins，对电芯的温度10mins采集一次，在放电30mins后，每15mins采集一次。
放电前期不采集每个电芯的电压。当总电压低于518V（3.7V*140），即每个电芯电压低于3.7V时，采集板总成113采集一次电压；动力电池的主控MCU分析后下达指令，对于电压低于3.6V的电芯，相关的采集板总成113每15mins采集一次的电压。
在放电的最后30mins，对电芯的温度、电压每5mins采集一次。
（备注：通常用1.0C放电30mins后，电芯才会开始发热；动力电池每串放电电流不超过3.1A，1.0C=3A）。
待机模式：
在采集间断的时间，只有通信模块1136工作。
数据异常处理：
当某电芯的温度或电压异常时，立即动力电池的主控MCU发送异常数据及其电芯地址。
数据采集与处理模块
温度采集与处理：
每个电芯采集10次温度，并计算平均值（使用计算式②），再将平均值与参考值对比，判断数据是否异常，再取第5个和第6个温度值计算平均值（使用计算式①），采集速度按AD转换器的速度而定。（充电温度范围：0～45℃，放电温度范围：-20～60℃，充电温度参考值35℃，放电温度参考值50℃，常温25℃）。
电压采集与处理：
每个采集板总成的固定块1135上的信号采集模块1137依次采集各相连的电芯的电压，对各个电芯每次采集持续时间为4ms。当环循采集10次时，对每个电芯均采集10次电压值，计算平均值（使用计算式②），再将平均值与参考值对比，判断数据是否异常，再取第5个和第6个电压值计算平均值（使用计算式①）。(充电电压范围4.05V～4.25V，参考值：4.15V；放电电压参考值：3.0V（2.9V）、3.7V（3.6V）)
平均值计算式
计算式①：在10个数据中，去掉最大值和最小值，再计算平均值。
计算式②：把这10个数据按大小依次排列，取第5个值和第6个值计算平均值。
通信模块工作方式
发送方式：采集板总成地址码、电芯1地址码、电芯1温度值、电芯1电压值、电芯2地址码、电芯2温度值、电芯2电压值、电芯3地址码、电芯3温度值、电芯3电压值、电芯4地址码、电芯4温度值、电芯4电压值、电芯5地址码、电芯5温度值、电芯5电压值、电芯6地址码、电芯6温度值、电芯6电压值、温度平均值、电压平均值、结束码。
异常数据立即优先发送，并发送其电芯的地址码；异常数据前加警示标识
接收方式：以中断的形式接收指令。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (26)

  1. 一种电芯状态采集装置，用于采集监控电芯状态信号，其特征在于，包括用于设置在串联相邻电芯之间的采集板总成、固定于串联相邻的一所述电芯的底面的第一接口、固定于串联相邻的另一所述电芯的顶端的第二接口和电性连接所述第一接口与所述第二接口的连接座；所述第一接口和所述第二接口相对插装于所述连接座中；所述采集板总成包括PCB板、安装于所述PCB板上的信号处理模块、安装于所述PCB板上的通信模块和配合插装于所述第一接口中的固定块；所述PCB板上具有可插装于所述第一接口中的连接部，所述固定块安装于所述连接部上，所述固定块上安装有用于采集所述第二接口对应的所述电芯状态信号的信号采集模块。
  2. 如权利要求1所述的电芯状态采集装置，其特征在于，所述连接座包括用于电连接所述第一接口与所述第二接口的连接电极和包裹所述连接电极的绝缘外壳，所述连接电极包括支撑板、用于配合抵顶所述第一接口的相对外侧面的第一侧壁和用于配合抵顶所述第二接口的相对外侧面的第二侧壁；所述第一侧壁和所述第二侧壁分别设于所述支撑板的相对两面上。
  3. 如权利要求2所述的电芯状态采集装置，其特征在于，所述第一侧壁为两块，且相对设置于所述支撑板的相对两端。
  4. 如权利要求3所述的电芯状态采集装置，其特征在于，所述第二侧壁设于所述支撑板的边缘。
  5. 如权利要求2所述的电芯状态采集装置，其特征在于，所述第二侧壁套筒状，设于所述支撑板的中间部位，所述支撑板上对应所述第二侧壁的位置开设有第一开孔。
  6. 如权利要求5所述的电芯状态采集装置，其特征在于，所述第二侧壁包括收缩段，所述收缩段由所述支撑板沿该第二侧壁的轴向呈向内收缩状。
  7. 如权利要求6所述的电芯状态采集装置，其特征在于，所述第二侧壁还包括导向段，所述导向段由所述收缩段沿该第二侧壁的轴向呈向外扩张状。
  8. 如权利要求5所述的电芯状态采集装置，其特征在于，所述固定块上凸设有经所述第一开孔配合插入所述第二接口中的插头。
  9. 如权利要求8所述的电芯状态采集装置，其特征在于，所述信号采集模块包括探测所述第二接口对应的所述电芯温度的温度探头，所述温度探头安装于所述插头上。
  10. 如权利要求2所述的电芯状态采集装置，其特征在于，所述信号采集模块还包括用于与所述第二接口对应的所述电芯正、负极电连接以探测该电芯的电压的两个探针，两个所述探针安装于所述固定块上，所述连接座还包括与所述第二接口对应的所述电芯侧面相连的引脚电极，所述引脚电极固定于所述绝缘外壳上，所述引脚电极与所述支撑板间隔设置。
  11. 如权利要求10所述的电芯状态采集装置，其特征在于，所述引脚电极的横截面呈L型，包括用于对应抵顶一所述探针的插入段和用于抵顶所述第二接口对应的所述电芯的侧面的抵顶段，所述抵顶段与所述插入段相连，所述插入段插装入所述绝缘外壳中。
  12. 如权利要求11所述的电芯状态采集装置，其特征在于，所述插入段位于所述第二侧壁对应的所述支撑板的一面的上方，所述支撑板上对应一所述探针的位置开设有第二开孔，所述绝缘外壳上对应所述第二开孔的位置开设有露出部分所述插入段的第三开孔。
  13. 如权利要求12所述的电芯状态采集装置，其特征在于，所述插入段位于所述第三开孔中的部分设有供相应的所述探针插入的第一凹陷槽。
  14. 如权利要求13所述的电芯状态采集装置，其特征在于，所述支撑板上对应另一所述探针的位置设有供该探针插入的第二凹陷槽。
  15. 如权利要求2所述的电芯状态采集装置，其特征在于，所述绝缘外壳包括固定所述支撑板的支撑座、包裹于所述第一侧壁外侧的第一侧板和包裹于所述第二侧壁外侧的第二侧板，所述第一侧板和第二侧板分别固定于所述支撑座的相对两面上。
  16. 如权利要求15所述的电芯状态采集装置，其特征在于，所述绝缘外壳的一侧还设有连接插块，所述绝缘外壳的相对另一侧上设有与另一所述绝缘外壳的所述连接插块相配合的插口。
  17. 如权利要求1-16任一项所述的电芯状态采集装置，其特征在于，所述第一接口包括用于与相应地所述电芯的底面固定相连的第一金属底板和用于插装入所述连接座中的两个第一金属侧壁，两个所述第一金属侧壁相对设于所述第一金属底板上，两个所述第一金属侧壁间具有供所述PCB板的连接部伸出的开口。
  18. 如权利要求17所述的电芯状态采集装置，其特征在于，所述第一金属底板上开设有便于将该第一金属底板固定在所述电芯的底面的第一通孔。
  19. 如权利要求17所述的电芯状态采集装置，其特征在于，所述第一金属底板呈圆形，所述第一金属侧壁沿平行于所述第一金属底板的截面呈圆弧状。
  20. 如权利要求1-16任一项所述的电芯状态采集装置，其特征在于，所述第二接口包括用于与相应地所述电芯的顶端固定相连的第二金属底板和用于插装入所述连接座中的第二金属侧壁，所述第二金属侧壁环绕于所述第二金属底板上。
  21. 如权利要求20所述的电芯状态采集装置，其特征在于，所述第二金属底板上开设有便于将该第二金属底板固定在所述电芯的顶端的第二通孔。
  22. 如权利要求20所述的电芯状态采集装置，其特征在于，所述第二金属底板呈圆形。
  23. 如权利要求22所述的电芯状态采集装置，其特征在于，所述第二金属侧壁呈渐扩状，且所述第二金属侧壁沿其高度方向上具有向外倾斜的锥度。
  24. 如权利要求23所述的电芯状态采集装置，其特征在于，所述第二金属侧壁上沿其高度方向上开设有若干狭长的缺口。
  25. 如权利要求1-16任一项所述的电芯状态采集装置，其特征在于，所述PCB板上设有多个所述连接部，每一所述连接部上均安装有所述固定块。
  26. 一种动力电池，包括若干电芯，其特征在于，还包括如权利要求1-25任一项所述的电芯状态采集装置，所述电芯安装于所述电芯状态采集装置上。
PCT/CN2014/074526 2014-04-01 2014-04-01 动力电池及其电芯状态采集装置 Ceased WO2015149275A1 (zh)

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