WO2020220908A1 - 电池模组及电池包 - Google Patents

电池模组及电池包 Download PDF

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Publication number
WO2020220908A1
WO2020220908A1 PCT/CN2020/082350 CN2020082350W WO2020220908A1 WO 2020220908 A1 WO2020220908 A1 WO 2020220908A1 CN 2020082350 W CN2020082350 W CN 2020082350W WO 2020220908 A1 WO2020220908 A1 WO 2020220908A1
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WO
WIPO (PCT)
Prior art keywords
battery
circuit board
battery module
cable
thermal
Prior art date
Application number
PCT/CN2020/082350
Other languages
English (en)
French (fr)
Inventor
朱贤春
曾超
曹华
王冲
Original Assignee
宁德时代新能源科技股份有限公司
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.)
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Publication of WO2020220908A1 publication Critical patent/WO2020220908A1/zh

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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
    • H01M10/425—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
    • 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]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • 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
    • 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
    • H01M50/30—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
    • H01M50/375—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
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/581—Devices or arrangements for the interruption of current in response to temperature
    • 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
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • 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

  • This application relates to the field of batteries, in particular to a battery module and a battery pack.
  • the single battery will be thermally out of control when abused, and then will quickly form high temperature and flame, its destructive power is extremely strong, and it is easy to cause a great safety accident.
  • the application provides a battery module and a battery pack, which can provide a thermal runaway signal of a single battery.
  • an embodiment of the present application provides a battery module, which includes: a battery pack, including a plurality of single cells arranged in an array, each single cell including an explosion-proof valve; a circuit board, including a plurality of sampling terminals, sampling The terminal is connected to the single battery, which can collect the electrical parameters and/or temperature parameters of the single battery; and the thermal cable, located between the battery pack and the circuit board, the thermal cable is fixedly connected to the circuit board, and the thermal cable A thermal circuit is formed inside, which can provide a warning signal that the explosion-proof valve of the single battery explodes.
  • the thermal cable includes a wire forming a thermal circuit and an insulating layer sheathed on the outer circumference of the wire, and the thermal cable is configured to melt the insulation when the explosion-proof valve of the single battery explodes Layer, short-circuit the thermal circuit to be able to provide a reminder signal.
  • the battery module further includes: a covering block extending along a first direction, the covering block is provided with at least a receiving portion penetrating the first direction, and the thermal cable is at least partially It is contained in the containing part, and the covering block is connected with the circuit board.
  • the battery module further includes: a connector, the connector includes an abutment portion and a clamping portion connected to each other; the circuit board includes a first surface facing away from the battery pack and The second surface of the circuit board is provided with openings penetrating through the first surface and the second surface, the abutting portion abuts the first surface, the clamping portion passes through the opening, and clamps the covering block.
  • the abutting portion has a third surface facing the circuit board, the clamping portion includes a first protrusion and a second protrusion protruding from the third surface, the first protrusion and the The second protrusions are arranged at intervals, the interval area forms a clamping space, and the covering block is located in the clamping space; the covering block is against the second surface.
  • the abutting portion has a fourth surface facing away from the circuit board, and the third surface is provided with a groove recessed toward the fourth surface of the abutting portion, and the groove can accommodate part of the circuit board .
  • the single battery includes electrodes
  • the battery module further includes: a bus, which connects the electrodes of the single battery, and the sampling terminal of the circuit board is connected to the single battery through the bus;
  • the portion extends along the second direction, and the second direction intersects the first direction.
  • the abutting portion has two opposite ends in the second direction. The two ends are respectively provided with a clamping structure on the third surface, and the clamping structure It can be connected with single battery and/or bus.
  • the clamping structure includes a clamping slot that is engaged with the single battery and/or the bus, and the slot has a clamping surface that abuts against the single battery and/or the bus , The distance from the clamping surface to the second surface of the circuit board is smaller than the thickness of the covering block.
  • the accommodating portion is a channel extending in the first direction
  • the covering block has a fifth surface facing the circuit board
  • the notch of the channel is located on the fifth surface
  • the inner portion of the channel is The shape of the wall surface matches the shape of the outer peripheral surface of the thermal cable.
  • the heat-sensitive cable and the receiving portion are interference fit.
  • the covering block is an elastic block.
  • the projection of the thermal cable on the plane where the explosion-proof valves of the multiple single cells are located passes through the explosion-proof valves of the multiple single cells.
  • an embodiment of the present application also provides a battery pack, which includes: a battery module according to any one of the foregoing embodiments, and a battery management system module, the thermal cable of the battery module is electrically connected to the battery management system module .
  • the battery module according to the embodiment of the present application includes a heat-sensitive cable fixedly connected to the circuit board, and a heat-sensitive circuit is formed in the heat-sensitive cable, which can provide a warning signal that the explosion-proof valve of the single battery explodes.
  • the thermal cable can be connected to the battery management system. When the single battery is in normal working condition without thermal runaway, the thermal circuit formed inside the thermal cable has resistance or can be connected in series with resistance, which is detected by the battery management system It is the rated resistance of the thermal cable. When a single battery is thermally out of control, its explosion-proof valve explodes to heat the thermal cable. The thermal cable can quickly sense the temperature change signal.
  • the thermal cable When the temperature exceeds the set threshold, the thermal cable The thermal circuit is short-circuited or open, and the short-circuit signal or open-circuit signal is used as a reminder signal, which can accurately and effectively transmit the information of the thermal runaway of the single battery to the outside, and improve the safety of the battery module in use.
  • the heat-sensitive cable includes a wire forming a heat-sensitive circuit and an insulating layer sheathed on the outer circumference of the wire.
  • the explosion-proof valve explodes to heat the heat-sensitive cable
  • the temperature of the thermal cable exceeds the set threshold, its insulating layer melts, causing the wires forming the thermal circuit to overlap and overlap in some areas, causing a short circuit.
  • the short circuit signal is used as a reminder signal and can be accurately and effectively transmitted to the outside world Information about thermal runaway of a single battery.
  • Figure 1 shows a perspective view of a battery module according to an embodiment of the present application
  • Figure 2 shows a three-dimensional exploded view of a battery module according to an embodiment of the present application
  • FIG. 3 shows a perspective view of the battery module according to an embodiment of the present application with the battery pack and the cover plate hidden;
  • FIG. 4 shows a perspective exploded view of the battery module according to an embodiment of the present application with the battery pack and the cover plate hidden;
  • Fig. 5 shows a schematic structural diagram of part of a thermal cable according to an embodiment of the present application
  • Figure 6 shows a cross-sectional view along the A-A direction in Figure 3;
  • Fig. 7 shows a cross-sectional view in the direction of B-B in Fig. 4;
  • Fig. 8 shows a perspective view of a connector in a battery module according to an embodiment of the present application
  • Fig. 9 shows a schematic cross-sectional view in the direction of C-C in Fig. 3;
  • FIG. 10 shows a partial enlarged schematic diagram of area D in FIG. 3;
  • FIG. 11 shows a partial enlarged schematic diagram of the E area in FIG. 4.
  • 11-battery pack 111-single cell; 1111-explosion valve; 1112-electrode;
  • the embodiments of the present application provide a battery module and a battery pack, wherein the battery pack may include a battery module and a battery management system module (Battery Management System, BMS).
  • BMS Battery Management System
  • the BMS is used to monitor the battery module and its internal single cells. Perform management and check the working status of the battery module and its internal single cells.
  • FIGS 1 and 2 respectively show a perspective view and a perspective exploded view of a battery module according to an embodiment of the present application.
  • the battery module 1 includes a battery pack 11, a circuit board 12, and the like.
  • the battery pack 11 includes a plurality of single cells 111 arranged in an array, and each single cell 111 includes an explosion-proof valve 1111 and an electrode 1112.
  • the single battery 111 may be a square battery, which has a top cover assembly, and the explosion-proof valve 1111 and the electrode 1112 may be arranged on the top cover assembly.
  • the plurality of single batteries 111 may be arranged in at least one row. In this embodiment, the arrangement of the plurality of single batteries 111 in two rows is taken as an example for description. In each column, a plurality of unit batteries 111 are stacked in the thickness direction.
  • the circuit board 12 includes a main body 121 and a plurality of sampling terminals 122.
  • the sampling terminals 122 are connected to the single battery 111 and can collect electrical parameters and/or temperature parameters of the single battery 111.
  • the circuit board 12 is a flexible printed circuit (FPC).
  • the sampling terminal 122 may extend from the body 121 to facilitate connection with the single battery 111.
  • the number of the circuit board 12 may be single, or two or more.
  • one circuit board 12 is provided on the side where the electrode 1112 of each column of the single battery 111 is arranged.
  • the circuit board 12 may be electrically connected to the BMS of the battery pack.
  • the circuit board 12 collects the voltage signal and temperature signal of the single battery 111, and transmits the voltage signal and temperature signal to the BMS, for example.
  • the sampling terminal 122 may be connected to the electrode 1112 of the single battery 111.
  • the battery module 1 further includes a bus 16, and the bus 16 is connected to the electrode 1112 of the single battery 111.
  • the sampling terminal 122 of the circuit board 12 is connected to the single battery 111 through the bus 16.
  • the battery module 1 may include a frame assembly to provide a space for accommodating a plurality of single cells 111 and to provide protection for the accommodated single cells 111 and other components.
  • the battery module 1 includes a cover plate 17, which can be used as at least a part of the frame assembly and is arranged on the side of the battery pack 11 where the electrode 1112 is provided.
  • 3 and 4 respectively show a perspective view and a perspective exploded view of the battery module 1 according to an embodiment of the present application with the battery pack and the cover plate hidden.
  • the battery module 1 further includes a thermal cable 13.
  • the thermal cable 13 is located between the battery pack 11 and the circuit board 12, and the thermal cable 13 is fixedly connected to the circuit board 12.
  • a heat-sensitive circuit is formed inside the heat-sensitive cable 13 to provide a warning signal that the explosion-proof valve 1111 of the single battery 111 has exploded.
  • the single battery 111 included in the battery module 1 may undergo thermal runaway in some situations.
  • the explosion-proof valve 1111 of the single battery 111 explodes.
  • the explosion of the explosion-proof valve 1111 means that the explosion-proof valve 1111 opens when the single battery 111 is thermally out of control, and ejects high-temperature gas, high-temperature electrolyte, or sparks, releasing a large amount of heat above and around it.
  • the explosion-proof valve 1111 By detecting whether the explosion-proof valve 1111 has exploded, it can be known whether the corresponding single battery 111 has a thermal runaway phenomenon.
  • the battery module 1 of the embodiment of the present application when the single battery 111 is thermally out of control, its explosion-proof valve 1111 explodes so that the thermal cable 13 is heated, and the thermal cable 13 can quickly sense the temperature change signal. When the temperature exceeds the set threshold, the thermal circuit in the thermal cable 13 is short-circuited or open.
  • the short-circuit signal or open-circuit signal is used as a reminder signal, which can accurately and effectively transmit the thermal runaway of the single battery 111 to the outside. Information to improve the safety of the battery module 1 in use.
  • the thermal cable 13 can be electrically connected to the BMS, that is, the thermal circuit formed therein is electrically connected to the BMS.
  • the thermal circuit formed inside the thermal cable 13 has resistance or can be connected in series, and the BMS detects the rated resistance of the thermal cable 13.
  • the single battery 111 is thermally out of control, its explosion-proof valve 1111 explodes to heat the thermal cable 13, and the thermal cable 13 can quickly sense the temperature change signal.
  • the thermal The thermal circuit in the sensitive cable 13 is short-circuited or disconnected.
  • the short-circuit signal or disconnection signal can be used as a reminder signal and can be transmitted to the BMS, which can accurately and effectively transmit the information of the thermal runaway of the single battery 111 to the outside, improving the battery module 1 Safety in use.
  • the battery module 1 and the battery pack are applied to the car as a power source.
  • the thermal cable 13 provides a prompt signal to be transmitted to the BMS, and the BMS can quickly send an alarm signal to the car system . In order to ensure that the people in the car have enough time to stay away from the car, avoid the damage to the people in the car caused by the burning phenomenon caused by the thermal runaway of the battery, and improve the reliability and safety of the battery module 1 and the battery pack in the application.
  • the multiple single cells 111 of the battery module 1 are arranged in two rows, and the explosion-proof valves 1111 of the single cells 111 in each row are arranged in line.
  • the heat-sensitive cable 13 is arranged in a U-shaped extension. The projection of the heat-sensitive cable 13 on the plane where the explosion-proof valves 1111 of the plurality of single batteries 111 are located passes through the explosion-proof valves 1111 of the plurality of single batteries 111.
  • the thermal cable 13 can be arranged immediately above the explosion-proof valve 1111 of the single battery 111, so that when the explosion-proof valve 1111 of any at least one single battery 111 is abnormal and explodes, the thermal cable can be quickly heated. The cable 13 enables the thermal cable 13 to quickly provide the above-mentioned prompt signal.
  • the extension of the thermal cable 13 can also be adjusted accordingly.
  • the thermal cable 13 has a U-shaped extension, and its two ends can be provided with electrical connectors 139.
  • the thermal circuit of the thermal cable 13 is electrically connected to the BMS through the electrical connectors 139. connection.
  • FIG. 5 shows a schematic structural diagram of a part of a thermal cable according to an embodiment of the present application, and a part of the thermal cable 13 is taken as an example in the figure.
  • the thermal cable 13 may be a cable with a twisted pair structure.
  • the thermal cable 13 includes a wire 131 forming a thermal circuit and an insulating layer 132 sheathed on the outer circumference of the wire 131.
  • at least one fixed-value resistor may be connected in series to the thermal circuit formed inside the thermal cable 13.
  • the heat-sensitive cable 13 is configured to melt the insulating layer 132 when the explosion-proof valve 1111 of the single battery 111 explodes, so that the heat-sensitive circuit is short-circuited to be able to provide a prompt signal.
  • the single battery 111 when the single battery 111 is thermally out of control, its explosion-proof valve 1111 explodes to heat the thermal cable 13. After the temperature of the thermal cable 13 exceeds the set threshold, its insulating layer 132 melts, causing heat to form.
  • the wire 131 of the sensitive circuit overlaps and overlaps in some areas and a short circuit occurs.
  • the short circuit signal is used as a reminder signal to accurately and effectively transmit the information that the single battery is thermally out of control to the outside world (for example, a BMS).
  • the battery module 1 further includes a covering block 14.
  • the covering block 14 extends along the first direction X, and the covering block 14 is connected to the circuit board 12.
  • the first direction X is parallel to the stacking direction of each column of single cells 111.
  • FIG. 6 shows a cross-sectional view in the direction of A-A in FIG. 3
  • FIG. 7 shows a cross-sectional view in the direction of B-B in FIG. 4.
  • the covering block 14 is provided with at least a receiving portion 141 penetrating through the first direction X, and the heat-sensitive cable 13 is at least partially received in the receiving portion 141.
  • the covering block 14 is connected to the circuit board 12 to realize the fixation and integration of the thermosensitive cable 13 and the circuit board 12.
  • the covering block 14 is an elastic block, for example, made of foam material, which has certain elasticity and flexibility.
  • the covering block 14 is used as an intermediate connection bridge to provide an assembly platform and space for the circuit board 12 and the thermal cable 13, and at the same time, the unique elasticity and flexibility of the covering block 14 are used to ensure the parts Reliability in the entire module working condition.
  • the receiving portion 141 may be a channel formed in the covering block 14 and extending along the first direction X, or may be a through groove formed in the covering block 14 and extending along the first direction X.
  • the accommodating portion 141 is a channel extending along the first direction X
  • the covering block 14 has a fifth surface S5 facing the circuit board 12
  • the slot of the channel is located on the fifth surface S5, and the inner wall surface of the channel
  • the shape matches the shape of the outer peripheral surface of the thermosensitive cable 13 so that the thermosensitive cable 13 can be more stably accommodated in the channel.
  • the slot of the channel is located on the fifth surface S5 facing the circuit board 12. After the covering block 14 is connected and fixed to the circuit board 12, the slot of the channel can be closed, avoiding the use of the thermal cable 13 and the covering block 14 Separate.
  • the heat-sensitive cable 13 and the accommodating portion 141 have an interference fit to realize the fixation of the heat-sensitive cable 13 and at the same time ensure the requirements of various working conditions of the heat-sensitive cable 13 in a vibration environment.
  • the battery module 1 further includes a connector 15.
  • FIG. 8 shows a perspective view of a connecting piece in the battery module 1 according to an embodiment of the present application.
  • the connecting piece 15 includes an abutting portion 151 and a clamping portion 152 connected to each other.
  • the connecting member 15 may be made of plastic material.
  • FIG. 9 shows a schematic cross-sectional view in the direction of C-C in Fig. 3.
  • FIG. 10 shows a partial enlarged schematic diagram of the area D in FIG. 3, in which to clearly show the structure of the components, the viewing angle of FIG. 10 is adjusted relative to FIG. 3.
  • FIG. 11 shows a partial enlarged schematic diagram of the E area in FIG. 4.
  • the circuit board 12 includes a first surface S1 facing away from the battery pack 11 and a second surface S2 facing the battery pack 11. As shown in FIG. 11, the circuit board 12 is provided with an opening 12h penetrating through the first surface S1 and the second surface S2. In some embodiments, the opening 12h is opened on the body 121.
  • the abutting portion 151 of the connecting member 15 abuts the first surface S1 of the circuit board 12, and the clamping portion 152 of the connecting member 15 passes through the opening 12 h and clamps the covering block 14.
  • the abutting portion 151 has a third surface S3 facing the circuit board 12, and the clamping portion 152 includes a first protrusion 1521 and a second protrusion 1522 protruding from the third surface S3. 1521 and the second protrusion 1522 are arranged at intervals, the interval area forms a clamping space 1523, and the covering block 14 is located in the clamping space 1523. In some embodiments, when the covering block 14 is clamped in the clamping space 1523, the covering block 14 abuts against the second surface S2 of the circuit board 12.
  • the abutting portion 151 has a fourth surface S4 facing away from the circuit board 12, and the third surface S3 is provided with a groove 1511 recessed toward the fourth surface S4 of the abutting portion 151, and the groove 1511 can accommodate Part of the circuit board 12.
  • the groove 1511 By providing the groove 1511 to accommodate part of the circuit board 12, the thickness of the connecting structure formed by the connecting member 15 and the circuit board 12, the covering block 14 and the thermal cable 13 is reduced, and the space utilization rate in the battery module is improved.
  • the abutting portion 151 extends along the second direction Y, where the second direction Y intersects the first direction X. In some embodiments, the second direction Y may be perpendicular to the first direction X.
  • the abutting portion 151 has two end portions 151a opposite to each other in the second direction Y, and the two end portions 151a are respectively provided with a clamping structure 153 on the third surface S3, and the clamping structure 153 can be connected to the battery module 1 The body battery 111 and/or the bus 16 are clamped.
  • the circuit board 12, the covering block 14 and the thermal cable 13 are connected through the connecting member 15, and the formed connection structure is clamped and fixed to the battery pack 11 and/or the bus 16 Therefore, there is no need to set up structures such as wire harness isolation plates and insulating sheets, which improves space utilization, reduces the cost of raw materials for the circuit board 12, and its connection structure is more concise and convenient, reducing the number of factory assembly processes and parts, thereby effectively reducing the design plan the cost of.
  • the clamping structure 153 includes a clamping slot 1531 that is engaged with the single battery 111 and/or the bus 16 and the slot 1531 has a clamping connection that abuts against the single battery 111 and/or the bus 16 ⁇ S6.
  • the distance L from the clamping surface S6 to the second surface S2 of the circuit board 12 is less than the thickness of the coating block 14, wherein the thickness of the coating block 14 means that the coating block 14 is perpendicular to the Dimensions in the S2 direction of the two surfaces.
  • the covering block 14 When the clamping structure 153 is clamped and fitted with the single battery 111 and/or the busbar 16, the covering block 14 has a certain degree of compression in the thickness direction, and the covering block 14 may have elasticity, so that the connecting piece 15, the circuit board 12, The clamping structure formed by the covering block 14, the thermal cable 13 and the single battery 111 and/or the bus 16 is more stable, and has better shockproof performance.
  • the heat-sensitive cable 13 can be pre-assembled in the accommodating portion 141 of the covering block 14, and then the covering block 14 containing the heat-sensitive cable 13 is set on the single battery 111. Then, the circuit board 12 is correspondingly arranged on the covering block 14 on the top cover assembly, and then the circuit board 12, the covering block 14 are fixed to the single battery 111 and/or the bus 16 through the connecting member 15.
  • the abutting portion 151 of the connecting member 15 abuts the first surface S1 of the circuit board 12, and the clamping portion 152 of the connecting member 15 passes through the opening 12h and clamps the covering block 14, thereby realizing the connecting member 15, the circuit board 12.
  • the connecting piece 15 is snap-fitted with the single battery 111 and/or the bus 16 through the clamping structure 153 to realize the connecting piece 15, the circuit board 12, and the covering block 14 and the fixing of the thermal cable 13 and the single battery 111.
  • the cover plate 17 can be assembled on the circuit board 12, and the cover plate 17 can be fixedly connected to the battery pack 11 through the cover plate connector 171 to realize the assembly of the battery module 1.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

本申请公开了一种电池模组及电池包，电池模组包括：电池组，包括阵列排布的多个单体电池，每个单体电池包括防爆阀；电路板，包括多个采样端子，采样端子与单体电池连接，能够采集单体电池的电气参数和/或温度参数；以及热敏线缆，位于电池组与电路板之间，热敏线缆与电路板固定连接，热敏线缆内部形成有热敏电路，能够提供单体电池的防爆阀发生爆喷的提示信号。

Description

电池模组及电池包
相关申请的交叉引用
本申请要求2019年4月30日提交的、申请号为201920620796.9、发明名称为“电池模组及电池包”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池领域，具体涉及一种电池模组及电池包。
背景技术
随着在动力电池以及储能电池中的能量密度越来越高，对电池安全性要求也越来越高。电池包中，单体电池在发生滥用时会发生热失控，进而会快速的形成高温以及火苗，其破坏力极强，容易引发极大的安全事故。
现有的动力电池及储能电池的模组设计方案中，单体电池的采样仅单纯对电压、以及部分单体电池的温度信号进行采集和传输，无法有效、准确地向外界提供和传递热失控提示信号。
发明内容
本申请提供一种电池模组及电池包，能够提供单体电池的热失控信号。
一方面，本申请实施例提供一种电池模组，其包括：电池组，包括阵列排布的多个单体电池，每个单体电池包括防爆阀；电路板，包括多个采样端子，采样端子与单体电池连接，能够采集单体电池的电气参数和/或温度参数；以及热敏线缆，位于电池组与电路板之间，热敏线缆与电路板固定连接，热敏线缆内部形成有热敏电路，能够提供单体电池的防爆阀发生爆喷的提示信号。
根据本申请一方面的前述实施方式，热敏线缆包括形成热敏电路的导 线以及套设在导线外周的绝缘层，热敏线缆配置为在单体电池的防爆阀发生爆喷时熔化绝缘层，使得热敏电路短路，以能够提供提示信号。
根据本申请一方面的前述任一实施方式，电池模组还包括：包覆块，沿第一方向延伸，包覆块上至少设有贯穿于第一方向的容纳部，热敏线缆至少部分容纳于容纳部，包覆块与电路板连接。
根据本申请一方面的前述任一实施方式，电池模组还包括：连接件，连接件包括相互连接的抵接部和夹持部；电路板包括背向电池组的第一表面以及朝向电池组的第二表面，电路板开设有贯穿第一表面、第二表面的开口，抵接部与第一表面相抵，夹持部穿过开口，并夹持包覆块。
根据本申请一方面的前述任一实施方式，抵接部具有朝向电路板的第三表面，夹持部包括相对第三表面凸起的第一凸起和第二凸起，第一凸起和第二凸起间隔设置，间隔区域形成夹持空间，包覆块位于夹持空间内；包覆块与第二表面相抵。
根据本申请一方面的前述任一实施方式，抵接部具有背向电路板的第四表面，第三表面设有向抵接部的第四表面凹陷的凹槽，凹槽能够容纳部分电路板。
根据本申请一方面的前述任一实施方式，单体电池包括电极，电池模组还包括：汇流件，连接单体电池的电极，电路板的采样端子通过汇流件与单体电池连接；抵接部沿第二方向延伸，第二方向与第一方向相交，抵接部具有在第二方向上相对的两个端部，两个端部分别在第三表面设有卡接结构，卡接结构能够与单体电池和/或汇流件卡接。
根据本申请一方面的前述任一实施方式，卡接结构包括与单体电池和/或汇流件卡接配合的卡槽，卡槽具有与单体电池和/或汇流件抵靠的卡接面，卡接面到电路板的第二表面的距离小于包覆块的厚度。
根据本申请一方面的前述任一实施方式，容纳部为沿第一方向延伸的槽道，包覆块具有朝向电路板的第五表面，槽道的槽口位于第五表面，槽道的内壁面形状与热敏线缆的外周面形状匹配。
根据本申请一方面的前述任一实施方式，热敏线缆与容纳部过盈配合。
根据本申请一方面的前述任一实施方式，包覆块为弹性块。
根据本申请一方面的前述任一实施方式，热敏线缆在多个单体电池的防爆阀所在平面的投影穿过多个单体电池的防爆阀。
另一方面，本申请实施例还提供一种电池包，其包括：根据上述任一实施方式的电池模组，以及电池管理系统模块，电池模组的热敏线缆与电池管理系统模块电连接。
根据本申请实施例的电池模组，其包括与电路板固定连接的热敏线缆，该热敏线缆内部形成有热敏电路，能够提供单体电池的防爆阀发生爆喷的提示信号。热敏线缆可以与电池管理系统连接，在单体电池未发生热失控而处于正常工况时，热敏线缆内部形成的热敏电路具有电阻或可以串接电阻，电池管理系统检测到的是热敏线缆的额定电阻。当单体电池发生热失控时，其防爆阀爆喷使得热敏线缆加热，热敏线缆可以迅速感测到温度变化的信号，当温度超过设定的阀值后，热敏线缆内的热敏电路发生短路或断路，该短路信号或者断路信号作为提示信号，能够准确有效地向外界传递单体电池发生热失控的信息，提高电池模组在使用中的安全性。
在一些可选的实施例中，热敏线缆包括形成热敏电路的导线以及套设在导线外周的绝缘层，当单体电池发生热失控时，其防爆阀爆喷使得热敏线缆加热，热敏线缆温度超过设定的阀值后，其绝缘层熔化，使得形成热敏电路的导线在部分区域重叠搭接，发生短路，该短路信号作为提示信号，能够准确有效地向外界传递单体电池发生热失控的信息。
附图说明
通过阅读以下参照附图对非限制性实施例所作的详细描述，本申请的其它特征、目的和优点将会变得更明显，其中，相同或相似的附图标记表示相同或相似的特征。
图1示出根据本申请实施例的电池模组的立体图；
图2示出根据本申请实施例的电池模组的立体分解图；
图3示出根据本申请实施例的电池模组隐去电池组及盖板的立体图；
图4示出根据本申请实施例的电池模组隐去电池组及盖板的立体分解图；
图5示出根据本申请实施例的部分热敏线缆的结构示意图；
图6示出图3中A-A向的截面图；
图7示出图4中B-B向的截面图；
图8示出根据本申请实施例的电池模组中连接件的立体图；
图9示出图3中C-C向的截面示意图；
图10示出图3中D区域的局部放大示意图；
图11示出图4中E区域的局部放大示意图。
图中：
1-电池模组
11-电池组；111-单体电池；1111-防爆阀；1112-电极；
12-电路板；S1-第一表面；S2-第二表面；121-本体；122-采样端子；12h-开口；
13-热敏线缆；131-导线；132-绝缘层；139-电连接件；
14-包覆块；S5-第五表面；141-容纳部；
15-连接件；
151-抵接部；S3-第三表面；S4-第四表面；151a-端部；1511-凹槽；
152-夹持部；1521-第一凸起；1522-第二凸起；1523-夹持空间；
153-卡接结构；1531-卡槽；S6-卡接面；
16-汇流件；
17-盖板；171-盖板连接件；
X-第一方向；Y-第二方向；
L-卡接面到电路板的第二表面的距离。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及具体实施例，对本申请进行进一步详细描述。应理解，此处所描述的具体实施例仅被配置为解释本申请，并不被配置为限定本申请。对于本领域技术人员来说，本申请可以在不需要这些具体细节中的一些细节的情况下实施。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
应当理解，在描述部件的结构时，当将一层、一个区域称为位于另一层、另一个区域“上面”或“上方”时，可以指直接位于另一层、另一个区域上面，或者在其与另一层、另一个区域之间还包含其它的层或区域。并且，如果将部件翻转，该一层、一个区域将位于另一层、另一个区域“下面”或“下方”。
本申请实施例提供一种电池模组以及一种电池包，其中电池包可以包括电池模组以及电池管理系统模块(Battery Management System，BMS)，BMS用于对电池模组及其内部单体电池进行管理，检测电池模组及其内部单体电池的工作状态。
以下将结合附图对本申请的一种实施例的电池模组进行详细说明。
图1、图2分别示出根据本申请实施例的电池模组的立体图、立体分解图。电池模组1包括电池组11、电路板12等。
电池组11包括阵列排布的多个单体电池111，每个单体电池111包括防爆阀1111、电极1112。其中，单体电池111可以是方形电池，其具有顶盖组件，防爆阀1111、电极1112可以设置在该顶盖组件上。多个单体电池111可以排列为至少一列，本实施例中以多个单体电池111排列为2列为例进行说明。每列中，多个单体电池111沿厚度方向堆叠。
电路板12包括本体121以及多个采样端子122，采样端子122与单体电池111连接，能够采集单体电池111的电气参数和/或温度参数。在一些实施例中，电路板12为柔性电路板(Flexible Printed Circuit，FPC)，在 一些实施例中，采样端子122可以自本体121向外伸出，以便于与单体电池111连接。电路板12的数量可以是单个，也可以是两个或多个，在一些实施例中，每列单体电池111的设置电极1112的一侧对应设置一个电路板12。
电路板12可以与电池包的BMS电连接，电路板12例如是采集单体电池111的电压信号以及温度信号，并将该电压信号、温度信号传输至BMS。
在一些实施例中，采样端子122可以与单体电池111的电极1112连接。此外在一些实施例中，电池模组1还包括汇流件16，汇流件16连接单体电池111的电极1112。其中电路板12的采样端子122通过汇流件16与单体电池111连接。
在一些实施例中，电池模组1可以包括框架组件，以提供容纳多个单体电池111的空间，并且能够为容纳的单体电池111及其它部件提供保护。在本实施例中，电池模组1包括盖板17，其可以作为框架组件的至少一部分，设置在电池组11的设有电极1112的一侧。
图3、图4分别示出根据本申请实施例的电池模组1隐去电池组及盖板的立体图、立体分解图。
本实施例中，电池模组1还包括热敏线缆13。热敏线缆13位于电池组11与电路板12之间，其中热敏线缆13与电路板12固定连接。热敏线缆13内部形成有热敏电路，能够提供单体电池111的防爆阀1111发生爆喷的提示信号。
电池模组1在使用过程中，其包括的单体电池111在一些情形下可能会出现热失控现象，热失控发生时，单体电池111的防爆阀1111发生爆喷。本文中，防爆阀1111发生爆喷指在单体电池111热失控时防爆阀1111打开，并且喷出高温气体、高温电解液或者火花等，向其上方及周边释放大量的热。通过检测防爆阀1111是否发生爆喷现象，能够获知对应的单体电池111是否出现热失控现象。
根据本申请实施例的电池模组1，当单体电池111发生热失控时，其防爆阀1111爆喷使得热敏线缆13加热，热敏线缆13可以迅速感测到温度变化的信号，当温度超过设定的阀值后，热敏线缆13内的热敏电路发生短 路或断路，该短路信号或者断路信号作为提示信号，能够准确有效地向外界传递单体电池111发生热失控的信息，提高电池模组1在使用中的安全性。
在包括本申请实施例的电池模组1的电池包中，热敏线缆13可以与BMS电连接，即将其内形成的热敏电路与BMS电连接。在单体电池111未发生热失控而处于正常工况时，热敏线缆13内部形成的热敏电路具有电阻或可以串接电阻，BMS检测到的是热敏线缆13的额定电阻。当单体电池111发生热失控时，其防爆阀1111爆喷使得热敏线缆13加热，热敏线缆13可以迅速感测到温度变化的信号，当温度超过设定的阀值后，热敏线缆13内的热敏电路发生短路或断路，该短路信号或者断路信号作为提示信号，可以传输至BMS，能够准确有效地向外界传递单体电池111发生热失控的信息，提高电池模组1在使用中的安全性。
在一些实施例中，电池模组1及电池包应用于汽车作为动力电源，单体电池111发生热失控时，热敏线缆13提供提示信号传输至BMS，BMS可以迅速向汽车系统发送报警信号，以保证车内人员具有足够的时间远离汽车，避免电池热失控产生的燃烧现象对车内人员造成的伤害，提高电池模组1及电池包在应用中的可靠性和安全性。
本实施例中，电池模组1的多个单体电池111排列为两列，每列单体电池111的防爆阀1111共线设置。本实施例中，热敏线缆13呈U型延伸设置，热敏线缆13在多个单体电池111的防爆阀1111所在平面的投影穿过多个单体电池111的防爆阀1111，在一些实施例中热敏线缆13可以紧邻设置在单体电池111的防爆阀1111的上方，使得任意至少一个单体电池111的防爆阀1111出现异常而爆喷时，都能迅速加热热敏线缆13，使得热敏线缆13能够迅速提供上述的提示信号。
可以理解的是，在其它实施例中，根据多个单体电池111的排列方式不同，热敏线缆13的延伸方式也可以作相应地调整。
本实施例中，热敏线缆13呈U型延伸设置，其两端可以设置有电连接件139，在一些实施例中，热敏线缆13的热敏电路通过电连接件139与BMS电连接。
图5示出根据本申请实施例的部分热敏线缆的结构示意图，图中示例截取了一部分片段的热敏线缆13。热敏线缆13可以是双绞线结构的线缆，热敏线缆13包括形成热敏电路的导线131以及套设在导线131外周的绝缘层132。在一些实施例中，热敏线缆13内部形成的热敏电路上可以串接至少一个定值电阻。在本实施例中，热敏线缆13配置为在单体电池111的防爆阀1111发生爆喷时熔化绝缘层132，使得热敏电路短路，以能够提供提示信号。
具体地，当单体电池111发生热失控时，其防爆阀1111爆喷使得热敏线缆13加热，热敏线缆13温度超过设定的阀值后，其绝缘层132熔化，使得形成热敏电路的导线131在部分区域重叠搭接，发生短路，该短路信号作为提示信号，能够准确有效地向外界(例如是BMS)传递单体电池发生热失控的信息。
如图1至图4，在一些实施例中，电池模组1还包括包覆块14。包覆块14沿第一方向X延伸，包覆块14与电路板12连接。在一些实施例中，第一方向X平行于每列单体电池111的堆叠方向。
图6示出图3中A-A向的截面图，图7示出图4中B-B向的截面图。包覆块14上至少设有贯穿于第一方向X的容纳部141，热敏线缆13至少部分容纳于容纳部141。包覆块14与电路板12连接，从而实现热敏线缆13与电路板12的固定以及集成。
在一些实施例中，包覆块14为弹性块，例如是泡棉材料制成，其具有一定的弹性和柔性。本实施例采用包覆块14作为中间连接的桥梁，提供了电路板12和热敏线缆13的装配平台和空间，同时利用了包覆块14本身特有的弹性、柔软性，保证了零部件在整个模组工况中的可靠性。
在一些实施例中，容纳部141可以是形成在包覆块14内并且沿第一方向X延伸的通道，也可以是形成在包覆块14内并且沿第一方向X延伸的通槽。
本实施例中，容纳部141为沿第一方向X延伸的槽道，包覆块14具有朝向电路板12的第五表面S5，槽道的槽口位于第五表面S5，槽道的内壁面形状与热敏线缆13的外周面形状匹配，使得热敏线缆13能够更稳固容 纳于槽道内。通过将容纳部141设置为具有槽口的槽道，方便热敏线缆13与包覆块的组装和拆卸。槽道的槽口位于朝向电路板12的第五表面S5，包覆块14与电路板12连接固定后，能够将槽道的槽口封闭，避免使用中热敏线缆13与包覆块14分离。
在一些实施例中，热敏线缆13与容纳部141过盈配合，实现热敏线缆13的固定的同时，能够保证热敏线缆13在振动环境下的多种工况要求。
如图1至图4，在一些实施例中，电池模组1还包括连接件15。图8示出根据本申请实施例的电池模组1中连接件的立体图，连接件15包括相互连接的抵接部151和夹持部152。在一些实施例中，连接件15可以是塑料材质。
图9示出图3中C-C向的截面示意图。图10示出图3中D区域的局部放大示意图，其中为清楚示出部件的结构，图10相对图3进行了视角的调整。图11示出图4中E区域的局部放大示意图。
在本实施例中，电路板12包括背向电池组11的第一表面S1以及朝向电池组11的第二表面S2。如图11，电路板12开设有贯穿第一表面S1、第二表面S2的开口12h。在一些实施例中，开口12h开设在本体121上。
在一些实施例中，连接件15的抵接部151与电路板12的第一表面S1相抵，连接件15的夹持部152穿过开口12h，并夹持包覆块14。
在一些实施例中，抵接部151具有朝向电路板12的第三表面S3，夹持部152包括相对第三表面S3凸起的第一凸起1521和第二凸起1522，第一凸起1521和第二凸起1522间隔设置，间隔区域形成夹持空间1523，包覆块14位于夹持空间1523内。在一些实施例中，包覆块14夹持于夹持空间1523时，包覆块14与电路板12的第二表面S2相抵。
在一些实施例中，抵接部151具有背向电路板12的第四表面S4，第三表面S3设有向抵接部151的第四表面S4凹陷的凹槽1511，该凹槽1511能够容纳部分电路板12。通过设置凹槽1511以容纳部分电路板12，使得连接件15与电路板12、包覆块14及热敏线缆13形成的连接结构厚度降低，提高电池模块内的空间利用率。
在一些实施例中，抵接部151沿第二方向Y延伸，其中第二方向Y与 第一方向X相交，在一些实施例中，第二方向Y可以与第一方向X垂直。抵接部151具有在第二方向Y上相对的两个端部151a，两个端部151a分别在第三表面S3设有卡接结构153，卡接结构153能够与电池模组1中的单体电池111和/或汇流件16卡接。
根据本申请实施例的电池模组1，通过连接件15连接电路板12、包覆块14及热敏线缆13，并将形成的连接结构与电池组11和/或汇流件16卡接固定，从而无需设置线束隔离板和绝缘片等结构，提高空间利用率，降低电路板12原材料成本，其连接结构更加简洁方便，减少了厂线装配的工序以及零部件数量，从而有效降低了设计方案的成本。
在一些实施例中，卡接结构153包括与单体电池111和/或汇流件16卡接配合的卡槽1531，卡槽1531具有与单体电池111和/或汇流件16抵靠的卡接面S6。如图9，在一些实施例中，卡接面S6到电路板12的第二表面S2的距离L小于包覆块14的厚度，其中包覆块14的厚度指包覆块14在垂直于第二表面S2方向上的尺寸。卡接结构153与单体电池111和/或汇流件16卡接配合时，包覆块14在厚度方向上具有一定程度压缩，包覆块14可以具有弹性，使得连接件15、电路板12、包覆块14、热敏线缆13与单体电池111和/或汇流件16形成的卡接结构更加稳固，同时具有较好的防震性能。
上述电池模组1在组装过程中，可以预先将热敏线缆13装配于包覆块14的容纳部141中，接着将容纳有热敏线缆13的包覆块14设置在单体电池111的顶盖组件上，然后将电路板12对应设置在包覆块14上，再然后通过连接件15将电路板12、包覆块14与单体电池111和/或汇流件16固定。其中，连接件15的抵接部151与电路板12的第一表面S1相抵，连接件15的夹持部152穿过开口12h，并夹持包覆块14，从而实现连接件15、电路板12、包覆块14以及热敏线缆13的固定；连接件15通过卡接结构153与单体电池111和/或汇流件16卡接配合，实现连接件15、电路板12、包覆块14以及热敏线缆13与单体电池111的固定。之后，可以将盖板17装配在电路板12上，并通过盖板连接件171将盖板17与电池组11固定连接，实现电池模组1的组装。
依照本申请如上文所述的实施例，这些实施例并没有详尽叙述所有的细节，也不限制该申请仅为所述的具体实施例。显然，根据以上描述，可作很多的修改和变化。本说明书选取并具体描述这些实施例，是为了更好地解释本申请的原理和实际应用，从而使所属技术领域技术人员能很好地利用本申请以及在本申请基础上的修改使用。本申请仅受权利要求书及其全部范围和等效物的限制。

Claims (13)

  1. 一种电池模组(1)，包括：
    电池组(11)，包括阵列排布的多个单体电池(111)，每个所述单体电池(111)包括防爆阀(1111)；
    电路板(12)，包括多个采样端子(122)，所述采样端子(122)与所述单体电池(111)连接，能够采集所述单体电池(111)的电气参数和/或温度参数；以及
    热敏线缆(13)，位于所述电池组(11)与所述电路板(12)之间，所述热敏线缆(13)与所述电路板(12)固定连接，所述热敏线缆(13)内部形成有热敏电路，能够提供所述单体电池(111)的所述防爆阀(1111)发生爆喷的提示信号。
  2. 根据权利要求1所述的电池模组(1)，其中，所述热敏线缆(13)包括形成所述热敏电路的导线(131)以及套设在所述导线(131)外周的绝缘层(132)，所述热敏线缆(13)配置为在所述单体电池(111)的所述防爆阀(1111)发生爆喷时熔化所述绝缘层(132)，使得所述热敏电路短路，以能够提供所述提示信号。
  3. 根据权利要求1所述的电池模组(1)，还包括：
    包覆块(14)，沿第一方向(X)延伸，所述包覆块(14)上至少设有贯穿于所述第一方向(X)的容纳部(141)，所述热敏线缆(13)至少部分容纳于所述容纳部(141)，所述包覆块(14)与所述电路板(12)连接。
  4. 根据权利要求3所述的电池模组(1)，还包括：
    连接件(15)，所述连接件(15)包括相互连接的抵接部(151)和夹持部(152)；
    所述电路板(12)包括背向所述电池组(11)的第一表面(S1)以及朝向所述电池组(11)的第二表面(S2)，所述电路板(12)开设有贯穿所述第一表面(S1)、所述第二表面(S2)的开口(12h)，所述抵接部(151)与所述第一表面(S1)相抵，所述夹持部(152)穿过所述开口 (12h)，并夹持所述包覆块(14)。
  5. 根据权利要求4所述的电池模组(1)，其中，所述抵接部(151)具有朝向所述电路板(12)的第三表面(S3)，所述夹持部(152)包括相对所述第三表面(S3)凸起的第一凸起(1521)和第二凸起(1522)，所述第一凸起(1521)和所述第二凸起(1522)间隔设置，间隔区域形成夹持空间(1523)，所述包覆块(14)位于所述夹持空间(1523)内；
    所述包覆块(14)与所述第二表面(S2)相抵。
  6. 根据权利要求5所述的电池模组(1)，其中，所述抵接部(151)具有背向所述电路板(12)的第四表面(S4)，所述第三表面(S3)设有向所述抵接部(151)的所述第四表面(S4)凹陷的凹槽(1511)，所述凹槽(1511)能够容纳部分所述电路板(12)。
  7. 根据权利要求4所述的电池模组(1)，其中，所述单体电池(111)包括电极(1112)，
    所述电池模组(1)还包括：
    汇流件(16)，连接所述单体电池(111)的所述电极(1112)，所述电路板(12)的采样端子(122)通过所述汇流件(16)与所述单体电池(111)连接；
    所述抵接部(151)沿第二方向(Y)延伸，所述第二方向(Y)与所述第一方向(X)相交，所述抵接部(151)具有在所述第二方向(Y)上相对的两个端部(151a)，两个所述端部(151a)分别在所述第三表面(S3)设有卡接结构(153)，所述卡接结构(153)能够与所述单体电池(111)和/或所述汇流件(16)卡接。
  8. 根据权利要求7所述的电池模组(1)，其中，所述卡接结构(153)包括与所述单体电池(111)和/或所述汇流件(16)卡接配合的卡槽(1531)，所述卡槽(1531)具有与所述单体电池(111)和/或所述汇流件(16)抵靠的卡接面(S6)，所述卡接面(S6)到所述电路板(12)的所述第二表面(S2)的距离小于所述包覆块(14)的厚度。
  9. 根据权利要求3所述的电池模组(1)，其中，所述容纳部(141)为沿所述第一方向(X)延伸的槽道，所述包覆块(14)具有朝向所述电 路板(12)的第五表面(S5)，所述槽道的槽口位于所述第五表面(S5)，所述槽道的内壁面形状与所述热敏线缆(13)的外周面形状匹配。
  10. 根据权利要求3所述的电池模组(1)，其中，所述热敏线缆(13)与所述容纳部(141)过盈配合。
  11. 根据权利要求3所述的电池模组(1)，其中，所述包覆块(14)为弹性块。
  12. 根据权利要求1所述的电池模组(1)，其中，所述热敏线缆(13)在多个所述单体电池(111)的防爆阀(1111)所在平面的投影穿过多个所述单体电池(111)的防爆阀(1111)。
  13. 一种电池包，包括：
    根据权利要求1至12任一项所述的电池模组(1)，以及
    电池管理系统模块，所述电池模组(1)的热敏线缆(13)与所述电池管理系统模块电连接。
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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110967643B (zh) * 2019-04-30 2021-01-22 宁德时代新能源科技股份有限公司 热失控检测电路及方法
CN209860056U (zh) * 2019-04-30 2019-12-27 宁德时代新能源科技股份有限公司 电池模组及电池包
CN111864292A (zh) 2019-04-30 2020-10-30 宁德时代新能源科技股份有限公司 电池模组以及电池包
CN111293266B (zh) 2020-02-26 2022-09-02 中创新航科技股份有限公司 电池模组
CN112259900A (zh) * 2020-10-27 2021-01-22 远景动力技术(江苏)有限公司 电池模组、电池包及其电池热失控检测方法
CN112687992B (zh) * 2020-12-28 2021-11-05 江苏塔菲尔动力系统有限公司 一种具有防火结构的电池模组
CN112652858B (zh) * 2021-01-18 2022-06-10 中国第一汽车股份有限公司 一种延缓热失控的电池模组、电池总成及电动车
CN116368659A (zh) * 2021-02-09 2023-06-30 宁德时代新能源科技股份有限公司 电池、用电装置、制备电池的方法和制备电池的装置
DE102021203310A1 (de) * 2021-03-31 2022-10-06 Rolls-Royce Deutschland Ltd & Co Kg Batteriezellenmodul mit Temperatursensorelement
JP2023017321A (ja) * 2021-07-26 2023-02-07 日本メクトロン株式会社 接続端子を備えるフレキシブルプリント配線板及びその製造方法
CN216720116U (zh) * 2021-11-24 2022-06-10 比亚迪股份有限公司 电芯单元、电池及车辆
CN216903165U (zh) * 2022-01-27 2022-07-05 宁德时代新能源科技股份有限公司 柔性电路板组件、电池及用电装置
CN115498345A (zh) * 2022-09-09 2022-12-20 海南小鹏汽车科技有限公司 线束隔离板、电池包和汽车
CN115441121B (zh) * 2022-11-08 2023-02-07 楚能新能源股份有限公司 一种延缓热失控的电池模组、电池包及电动车

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009043592A (ja) * 2007-08-09 2009-02-26 Toshiba Corp バッテリモジュール
CN105762432A (zh) * 2016-04-26 2016-07-13 华霆（合肥）动力技术有限公司 一种电池模组爆喷状态的检测方法和装置
CN207399614U (zh) * 2017-11-08 2018-05-22 宁德时代新能源科技股份有限公司 Fpc固定组件
CN108565515A (zh) * 2018-04-10 2018-09-21 华霆（合肥）动力技术有限公司 电池失稳抑制机构和系统
CN207967147U (zh) * 2018-03-08 2018-10-12 宁德时代新能源科技股份有限公司 电池模组
CN209730085U (zh) * 2019-04-30 2019-12-03 宁德时代新能源科技股份有限公司 电池模组
CN209822756U (zh) * 2019-04-30 2019-12-20 宁德时代新能源科技股份有限公司 电池模组及电池包
CN209860056U (zh) * 2019-04-30 2019-12-27 宁德时代新能源科技股份有限公司 电池模组及电池包

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4641744B2 (ja) * 2004-05-31 2011-03-02 三洋電機株式会社 パック電池、パック電池に用いる感熱体及び感熱体
JP5173226B2 (ja) * 2007-03-30 2013-04-03 三洋電機株式会社 パック電池
JP6279834B2 (ja) * 2013-02-20 2018-02-14 ホーチキ株式会社 蓄電装置及びそれを使用する移動体又は施設

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009043592A (ja) * 2007-08-09 2009-02-26 Toshiba Corp バッテリモジュール
CN105762432A (zh) * 2016-04-26 2016-07-13 华霆（合肥）动力技术有限公司 一种电池模组爆喷状态的检测方法和装置
CN207399614U (zh) * 2017-11-08 2018-05-22 宁德时代新能源科技股份有限公司 Fpc固定组件
CN207967147U (zh) * 2018-03-08 2018-10-12 宁德时代新能源科技股份有限公司 电池模组
CN108565515A (zh) * 2018-04-10 2018-09-21 华霆（合肥）动力技术有限公司 电池失稳抑制机构和系统
CN209730085U (zh) * 2019-04-30 2019-12-03 宁德时代新能源科技股份有限公司 电池模组
CN209822756U (zh) * 2019-04-30 2019-12-20 宁德时代新能源科技股份有限公司 电池模组及电池包
CN209860056U (zh) * 2019-04-30 2019-12-27 宁德时代新能源科技股份有限公司 电池模组及电池包

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