WO2020220570A1 - 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
WO2020220570A1
WO2020220570A1 PCT/CN2019/107257 CN2019107257W WO2020220570A1 WO 2020220570 A1 WO2020220570 A1 WO 2020220570A1 CN 2019107257 W CN2019107257 W CN 2019107257W WO 2020220570 A1 WO2020220570 A1 WO 2020220570A1
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WO
WIPO (PCT)
Prior art keywords
cover
battery
battery module
cover plate
heat
Prior art date
Application number
PCT/CN2019/107257
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
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Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to US16/970,180 priority Critical patent/US11251500B2/en
Priority to PL19912228.4T priority patent/PL3761397T3/pl
Priority to EP19912228.4A priority patent/EP3761397B1/en
Publication of WO2020220570A1 publication Critical patent/WO2020220570A1/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
    • 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
    • H01M50/383—Flame arresting or ignition-preventing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H01M50/143—Fireproof; Explosion-proof
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H01M50/287—Fixing of circuit boards to lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/572—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
    • 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
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • 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
    • H01M50/50—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
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • 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
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • 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
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to the field of batteries, in particular to a battery module and a battery pack.
  • the present disclosure provides a battery module and a battery pack, which can provide a thermal runaway prompt signal of a single battery.
  • an embodiment of the present disclosure 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 cover plate located on the battery pack; The sensitive component is located between the battery pack and the cover plate. The heat sensitive component is connected to the cover plate. The heat sensitive component includes a heat sensitive wire. The heat sensitive wire can provide a warning signal that the explosion-proof valve of the single battery explodes.
  • the thermal wire is configured to be disconnected when the explosion-proof valve of the single battery explodes, so as to be able to provide a prompt signal.
  • the heat-sensitive component further includes a cover, the cover is connected to the cover plate, the cover is provided with a containing cavity, and at least part of the structure of the heat-sensitive wire is located in the containing cavity.
  • the covering includes a first covering layer, and a surface of the first covering layer facing the cover plate is provided with a receiving groove to form at least a part of the receiving cavity.
  • the covering further includes a second covering layer, and the second covering layer and the first covering layer are stacked on each other, so that the receiving groove at least partially encloses the receiving cavity.
  • the cover has a first surface facing the cover plate, and the first surface is thermally and pressure-bonded, bonded, or connected to the cover plate.
  • the cover is connected to the cover plate through a connecting piece.
  • the cover has a first surface facing the cover plate and a second surface facing away from the cover plate.
  • the cover is also provided with connecting holes penetrating through the first surface and the second surface, and the connecting piece passes through
  • the cover is detachably connected to the cover in the connecting hole.
  • the cover extends in a first direction, and the cover has two opposite end faces in the first direction.
  • the thermal wire includes an input end and an output end, and the thermal wire is arranged in a U-shaped structure, And the input end and the output end of the thermal wire extend from one of the end faces of the cover.
  • the thermal component further includes an electrical connector, and the input end and the output end of the thermal wire are connected to the electrical connector.
  • more than two heat-sensitive wires are contained in the containing cavity of each cover.
  • the multiple single cells of the battery pack are arranged in at least one row, so that the explosion-proof valves of each row of single cells are arranged in line; the side where the explosion-proof valves of each row of single cells are arranged At least one heat-sensitive component, wherein the projection of the heat-sensitive wire of each heat-sensitive component on the plane where the explosion-proof valves of the multiple single cells of the battery pack pass through the explosion-proof valves of the corresponding column of single cells.
  • an embodiment of the present disclosure provides a battery pack, which includes the battery module of any of the above embodiments; and a battery management system module, and the thermal wire of the thermal component of the battery module is electrically connected to the battery management system module .
  • the battery module includes a cover plate on the battery pack and a heat-sensitive component disposed between the battery pack and the cover plate.
  • the heat-sensitive component includes a heat-sensitive wire, and in some embodiments the heat-sensitive wire can be connected to the battery management system.
  • a single battery is thermally out of control, its explosion-proof valve explodes to heat the thermal component, and the thermal wire turns into a molten state in the heated part, thereby disconnecting or melting and overlapping, forming an open circuit or short circuit signal, the short circuit
  • the signal or disconnection 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, so that the battery module has the thermal runaway warning performance during use.
  • the cover plate when the single battery is thermally out of control, the cover plate has certain fire and heat insulation capabilities to prevent the flame formed by the single battery from being thermally out of control from spreading to the battery module quickly, and integrate its thermal runaway warning performance to improve the battery module Safety in use.
  • the thermal wire is configured to be disconnected when the explosion-proof valve of the single battery explodes.
  • the explosion-proof valve explodes to heat the heat-sensitive component.
  • the wire turns into a molten state in the heated part, and adsorbs to both sides into spherical breakpoints, so that the path formed by the heat-sensitive wire is turned into an open circuit.
  • the open circuit signal can be used as a reminder signal to quickly transfer the single battery to the outside world Information that thermal runaway has occurred.
  • Fig. 1 shows a perspective view of a battery module according to a first embodiment of the present disclosure
  • FIG. 2 shows a perspective exploded view of the battery module according to the first embodiment of the present disclosure
  • Fig. 3 shows a perspective exploded view of a cover plate and a thermal component according to the first embodiment of the present disclosure
  • FIGS. 6 and 7 show a perspective exploded view of a heat-sensitive component according to a second embodiment of the present disclosure.
  • 11-battery pack 111-single cell; 1111-explosion valve; 1112-electrode;
  • 131-thermal wire 131a-input terminal; 131b-output terminal;
  • 132-cover 132a-first surface; 132b-second surface; 132c-end surface; 1321-first cover layer; 1321s-accommodating groove; 1322-second cover layer;
  • 16-circuit board 161-body; 162-sampling terminal;
  • the embodiments of the present disclosure 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 the battery module according to the first embodiment of the present disclosure.
  • the battery module 1 may include a battery pack 11, a cover plate 12, and the like.
  • the battery module 1 may also include a wiring harness isolation plate 14, a bus 15 and a circuit board 16, etc.
  • the battery module 1 further includes a heat-sensitive component 13 that is used to provide a reminder when the single battery is thermally out of control.
  • the battery pack 11 includes a plurality of single cells 111 arranged in an array.
  • Each single cell 111 includes an explosion-proof valve 1111 and an electrode 1112; wherein, the single cell 111 may be a square battery with a top cover assembly, an explosion-proof valve 1111, The electrode 1112 may be provided 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 wiring harness isolation board 14 is located on the battery pack 11 and is used to install components such as the circuit board 16 and isolate the components such as the circuit board 16 from the battery pack 11.
  • the wire harness isolation plate 14 is provided with a plurality of electrode openings 141 such that the electrodes 1112 of the plurality of unit cells 111 of the battery pack 11 are exposed at the electrode openings 141.
  • the circuit board 16 can be installed on the wire harness isolation board 14.
  • the circuit board 16 includes a body 161 and a plurality of sampling terminals 162.
  • the sampling terminals 162 are connected to the single battery 111 and can collect electrical parameters and/or temperature parameters of the single battery 111.
  • the circuit board 16 is a flexible printed circuit (FPC), and the sampling terminal 162 may extend from the main body 161 to facilitate connection with the single battery 111.
  • the number of the circuit board 16 may be single, or two or more.
  • one circuit board 16 is provided on the side where the electrode 1112 of each column of the single battery 111 is arranged.
  • the circuit board 16 can be electrically connected to the BMS of the battery pack.
  • the circuit board 16 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 162 may be connected to the electrode 1112 of the single battery 111.
  • the battery module 1 further includes a bus 15 connected to the electrode 1112 of the single battery 111, and the sampling terminal 162 of the circuit board 16 is connected to the single battery 111 through the bus 15.
  • the above-mentioned fixed installation manner of the circuit board 16 in the battery module 1 and the electrical connection manner of the circuit board 16 and the single battery 111 are just examples.
  • the circuit board 16 is not limited to be installed and fixed in the battery module 1 through the wire harness isolation plate 14, and the sampling terminal 162 of the circuit board 16 is not limited to be electrically connected to the single battery 111 through the bus 15, either.
  • the installation method and electrical connection method can be adjusted according to the module structure design.
  • the cover plate 12 is located on the battery pack 11. In this embodiment, the cover plate 12 is located on the circuit board 16. In some embodiments, the cover plate 12 may be connected to the battery pack 11 and/or the wire harness isolation plate 14 through a cover plate connector 121, which is, for example, a snap connector.
  • the cover plate 12 may be made of mica, which has certain fire-proof and heat-insulation properties, and can slow the spread of fire when the single battery 111 is out of control.
  • FIG. 3 shows a perspective exploded view of the cover plate and the thermal component according to the first embodiment of the present disclosure.
  • the thermal component 13 of this embodiment is located between the battery pack 11 and the cover plate 12, and the thermal component 13 and the cover plate 12 connection.
  • the heat-sensitive component 13 is connected to the surface of the cover plate 12 facing the battery pack 11, and the number of the heat-sensitive components 13 connected to the cover plate 12 may be a single one, or two or more.
  • the heat-sensitive component 13 includes a heat-sensitive wire 131 that can provide the explosion-proof valve 1111 of the single battery 111 to explode. Reminder signal.
  • 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 heat is out of control, and ejects high-temperature gas, high-temperature electrolyte or sparks, and releases a large amount of heat to its upper and surrounding areas.
  • the battery module 1 includes a cover plate 12 on the battery pack 11 and a heat-sensitive component 13 disposed between the battery pack 11 and the cover plate 12, and the heat-sensitive component 13 includes a heat-sensitive wire 131.
  • the single battery 111 is thermally out of control, its explosion-proof valve 1111 explodes to heat the thermal component 13, and the thermal wire 131 transforms into a molten state at the heated part, thereby disconnecting or melting and overlapping, forming an open circuit or short circuit.
  • the signal, the short circuit signal or the open circuit signal as a reminder signal can accurately and effectively transmit the information of the thermal runaway of the single battery 111 to the outside, so that the battery module 1 has a thermal runaway warning performance during use.
  • the cover plate 12 has certain fireproof and heat insulation capabilities to prevent the flame formed by the thermal runaway of the single battery 111 from spreading to the battery module 1 quickly, and comprehensive its thermal runaway early warning performance , Improve the safety of the battery module 1 in use.
  • the thermosensitive component 13 may be electrically connected to the BMS, that is, the thermosensitive wire 131 thereof may be electrically connected to the BMS.
  • the BMS detects the path signal of the thermal wire 131 in the normal operating condition.
  • the single battery 111 is thermally out of control, its explosion-proof valve 1111 explodes to heat the thermal wire 131.
  • the thermal wire 131 can quickly sense the temperature change signal.
  • the thermal wire 131 turns into a molten state in the heated part, making the line short-circuited or disconnected, and short-circuit or open circuit occurs.
  • the short-circuit signal or open circuit signal can be transmitted to the BMS as a reminder signal, which can accurately and effectively transmit the single battery 111 to the outside world.
  • the information that thermal runaway occurs can improve the safety of the battery module in use.
  • the battery module 1 and the battery pack are applied to a car as a power source.
  • the thermal wire 131 provides a prompt signal and transmits it to the BMS.
  • 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 combustion phenomenon caused by the thermal runaway of the battery, and improve the reliability and safety of the battery module and battery pack in the application.
  • the explosion-proof valve 1111 is located in the central area determined by its top cover assembly.
  • the multiple single cells 111 of the battery pack 11 are arranged in at least one row, so that the explosion-proof valves 1111 of the single cells 111 in each row are arranged in line.
  • At least one heat-sensitive component 13 is provided on the side where the explosion-proof valve 1111 of each row of single cells 111 is provided. The projection of the heat-sensitive wire 131 of each heat-sensitive component 13 on the plane where the explosion-proof valves 1111 of the multiple single cells 111 of the battery pack 11 pass through the explosion-proof valves 1111 of the corresponding column of single cells 111.
  • each row of single cells 111 (that is, the side of each row of single cells 111 where the explosion-proof valve 1111 is provided) is correspondingly provided with a heat-sensitive component 13, and the heat-sensitive wire 131 of the heat-sensitive component 13 is The projection of the plane where the explosion-proof valve 1111 is located passes through the explosion-proof valve 1111 of the corresponding column of single cells 111.
  • the thermal component 13 can be quickly heated, so that the thermal wire 131 of the thermal component 13 can be quickly provided The above reminder signal.
  • the thermal wire 131 may be a tin wire, and in some embodiments, a tin wire containing rosin flux.
  • the thermal wire 131 includes an input terminal 131a and an output terminal 131b. In some embodiments, both the input terminal 131a and the output terminal 131b of the thermal wire 131 are connected to the BMS, and the BMS detects that the thermal wire 131 is a path under normal operating conditions.
  • the single battery 111 When the single battery 111 is thermally out of control, its explosion-proof valve 1111 explodes, the tin wire in the upper area senses a high temperature, it immediately becomes a molten state, and is adsorbed into a spherical shape on both sides and disconnected, and the thermal wire 131 is disconnected from The original path is transformed into an open circuit, and the signal of the open circuit can be used as a reminder signal to quickly transmit to the outside world (for example, to the BMS) that the single battery 111 is thermally out of control.
  • the thermosensitive component 13 further includes a cover 132, and the cover 132 is connected to the cover plate 12.
  • a containing cavity may be provided inside the cover 132, and at least a part of the structure of the thermal wire 131 is located in the containing cavity.
  • the cover 132 accommodates the heat-sensitive wire 131 and is connected to the cover plate 12 to realize the integration of the heat-sensitive wire 131 and the cover plate 12.
  • the covering 132 includes a first covering layer 1321, and the first covering layer 1321 may be an insulating material such as mica or polyamide 6 (PA6).
  • the surface of the first covering layer 1321 facing the cover 12 is provided with a receiving groove 1321s, and the receiving groove 1321s forms at least a part of the receiving cavity.
  • the receiving groove 1321s matches the winding shape of the thermal wire 131.
  • the first covering layer 1321 may be directly or indirectly connected to the cover plate 12.
  • the covering 132 further includes a second covering layer 1322, and the second covering layer 1322 may be an insulating material such as mica or polyamide 6 (PA6).
  • the second covering layer 1322 and the first covering layer 1321 are stacked on each other, thereby at least partially enclosing the receiving groove 1321s to form a receiving cavity.
  • the cover 132 may be connected to the cover plate 12 through the second cover layer 1322, and the heat-sensitive wire 131 is at least partially accommodated in the cavity formed by the second cover layer 1322 and the first cover layer 1321. , So as to realize the integration of the thermal wire 131 and the cover 12.
  • the cover 132 has a first surface 132a facing the cover 12, and the first surface 132a is thermally and pressure-bonded, bonded, or suction-connected with the cover 12, so that the cover 132 is integrated with the cover 12 Become one.
  • the cover 132 extends along the first direction X.
  • the first direction X is parallel to the stacking direction of each row of single cells 111.
  • the cover 132 has two opposite end surfaces 132c in the first direction X.
  • the thermal wire 131 includes an input terminal 131a and an output terminal 131b.
  • the thermal wire 131 of this embodiment is arranged in a U-shaped structure, and the input terminal 131a and the output terminal 131b of the thermal wire 131 extend from one end surface 132c of the cover 132 Out.
  • the thermal component 13 further includes an electrical connector 134.
  • the input end 131a and the output end 131b of each thermal wire 131 are connected to the electrical connector 134 to facilitate the connection of the thermal wire 131 with BMS and other systems. Electric connection.
  • two heat-sensitive wires 131 are contained in the containing cavity of each cover 132, and the two heat-sensitive wires 131 are extended in a U-shaped structure.
  • the containing groove 1321s on the first covering layer 1321 It can also be arranged in a U-shaped extension so as to accommodate two heat-sensitive wires 131 at the same time.
  • the heat-sensitive component 13 is thermocompression bonded, bonded, or suction-connected to the cover 12 through its own cover 132, so that the heat-sensitive component 13 and the cover 12 It is integrated as a whole, but the integrated connection mode of the thermal sensitive component 13 and the cover 12 may not be limited to this.
  • FIGS. 6 and 7 show a perspective exploded view of a heat-sensitive component according to a second embodiment of the present disclosure.
  • the heat-sensitive component 13 of the second embodiment is mostly similar in structure to the heat-sensitive component 13 of the first embodiment. No more details.
  • the difference from the first embodiment is that in this embodiment, the heat-sensitive component 13 includes a cover 132, and the cover 132 is connected to the cover plate 12 through a connecting piece 19.
  • the connecting piece 19 is, for example, a bolt connecting piece, so as to realize the detachable integration of the heat-sensitive component 13 and the cover plate 12.
  • the cover 132 has a first surface 132a facing the cover plate 12 and a second surface 132b facing the cover plate 12, and the cover 132 is further provided with a connecting hole 13h penetrating the first surface 132a and the second surface 132b.
  • the connecting piece 19 is inserted into the connecting hole 13h and connects the cover 132 to the cover 12 detachably.
  • the number of connecting holes 13h provided on the cover 132 can be adjusted according to actual needs.
  • the cover 132 is provided with two connecting holes 13h, and the two connecting holes 13h are respectively located on the cover 132 along the first direction. Both ends of X.
  • the connecting hole 13h and the accommodating cavity are arranged to avoid each other, so as to avoid interference of the connecting member 19 on the thermal wire 131 in the accommodating cavity.
  • different integration schemes can be selected according to the actual structure of the battery module 1 to realize the thermal assembly 13 and the cover 12 It is integrated to provide a warning signal that the single battery 111 is thermally out of control.
  • the introduction and integration of the thermal component 13 does not conflict with other structures inside the battery module 1, so there is no need to design additional structures in the battery module 1 except for the cover plate 12, which can ensure the original battery to a greater extent.
  • a modular integrated design is formed between the thermal component 13 and the cover plate 12.
  • the standard modular design can achieve greater production versatility, assembly consistency, and ensure the operability of different design solutions. Due to standardization and modularization, the design cost of battery module products is reduced, and the production efficiency of a single product is accelerated, which can effectively reduce the cost of materials.

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Abstract

一种电池模组（1）及电池包，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），每个单体电池（111）包括防爆阀（1111）；盖板（12），位于电池组（11）上；以及热敏组件（13），位于电池组（11）与盖板（12）之间，热敏组件（13）与盖板（12）连接，热敏组件（13）包括热敏导线（131），热敏导线（131）能够提供单体电池（111）的防爆阀（1111）发生爆喷的提示信号。该电池模组（1），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，使得电池模组（1）具有热失控预警性能。

Description

电池模组及电池包
本申请要求了2019年4月30日提交的、申请号为201920615109.4、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
本公开涉及电池领域，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。电池模组中，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。
申请内容
本公开提供一种电池模组及电池包，能够提供单体电池的热失控提示信号。
一方面，本公开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；盖板，位于电池组上；以及热敏组件，位于电池组与盖板之间，热敏组件与盖板连接，热敏组件包括热敏导线，热敏导线能够提供单体电池的防爆阀发生爆喷的提示信号。
根据本公开实施例的一个方面，热敏导线配置为在单体电池的防爆阀发生爆喷时断开，以能够提供提示信号。
根据本公开实施例的一个方面，热敏组件还包括覆盖物，覆盖物与盖 板连接，覆盖物内部设有容纳腔，热敏导线的至少部分结构位于容纳腔内。
根据本公开实施例的一个方面，覆盖物包括第一覆盖层，第一覆盖层的朝向盖板的表面设有容纳槽，形成至少部分容纳腔。
根据本公开实施例的一个方面，覆盖物还包括第二覆盖层，第二覆盖层与第一覆盖层相互层叠设置，使得容纳槽至少部分围合形成容纳腔。
根据本公开实施例的一个方面，覆盖物具有朝向盖板的第一表面，第一表面与盖板热压接合、或粘接、或吸附连接。
根据本公开实施例的一个方面，覆盖物通过连接件与盖板连接。
根据本公开实施例的一个方面，覆盖物具有朝向盖板的第一表面和背向盖板的第二表面，覆盖物还设有贯穿第一表面、第二表面的连接孔，连接件穿设在连接孔内并将覆盖物与盖板可拆卸连接。
根据本公开实施例的一个方面，覆盖物沿第一方向延伸，覆盖物在第一方向上具有相对的两个端面，热敏导线包括输入端和输出端，热敏导线呈U型结构设置，并且热敏导线的输入端和输出端自覆盖物的其中一个端面伸出。
根据本公开实施例的一个方面，热敏组件还包括电连接器，热敏导线的输入端、输出端与电连接器连接。
根据本公开实施例的一个方面，每个覆盖物的容纳腔内容纳有两条以上热敏导线。
根据本公开实施例的一个方面，电池组的多个单体电池排布为至少一列，使得每列单体电池的防爆阀共线设置；每列单体电池的设置防爆阀的一侧设有至少一个热敏组件，其中，每个热敏组件的热敏导线在电池组的多个单体电池的防爆阀所在平面的投影穿过对应列单体电池的防爆阀。
另一方面，本公开实施例提供一种电池包，其包括上述任一实施方式的电池模组；以及电池管理系统模块，电池模组的热敏组件的热敏导线与电池管理系统模块电连接。
根据本公开实施例的电池模组，其包括位于电池组上的盖板以及设置在电池组与盖板之间的热敏组件。热敏组件包括热敏导线，在一些实施例中热敏导线可以与电池管理系统连接。当单体电池发生热失控时，其防爆 阀爆喷使得热敏组件加热，热敏导线在受到加热的部分转变为熔融状态，从而断开或熔融搭接，形成断路或短路的信号，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，使得电池模组在使用中具有热失控预警性能。此外，当单体电池发生热失控时，盖板具有一定的防火和隔热能力，避免单体电池热失控形成的火苗快速蔓延至电池模组外，综合其热失控预警性能，提高电池模组在使用中的安全性。
在一些可选的实施例中，热敏导线配置为在单体电池的防爆阀发生爆喷时断开，当单体电池发生热失控时，其防爆阀爆喷使得热敏组件加热，热敏导线在受到加热的部分转变为熔融状态，并向两侧吸附为球状的断点，使得原本热敏导线能够形成的通路转变为断路，该断路信号能够作为提示信号，迅速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，本公开的其它特征、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示出根据本公开第一实施例的电池模组的立体图；
图2示出根据本公开第一实施例的电池模组的立体分解图；
图3示出根据本公开第一实施例的盖板及热敏组件的立体分解图；
图4和图5示出根据本公开第一实施例的热敏组件的立体分解图；
图6和图7示出根据本公开第二实施例的热敏组件的立体分解图。
图中：
1-电池模组；
11-电池组；111-单体电池；1111-防爆阀；1112-电极；
12-盖板；121-盖板连接件；
13-热敏组件；
131-热敏导线；131a-输入端；131b-输出端；
132-覆盖物；132a-第一表面；132b-第二表面；132c-端面；1321-第一 覆盖层；1321s-容纳槽；1322-第二覆盖层；
13h-连接孔；
134-电连接器；
14-线束隔离板；141-电极开口；
15-汇流件；
16-电路板；161-本体；162-采样端子；
19-连接件；
X-第一方向。
具体实施方式
下面将详细描述本公开的各个方面的特征和示例性实施例，为了使本公开的目的、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，对本公开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公开，并不被配置为限定本公开。对于本领域技术人员来说，本公开可以在不需要这些具体细节中的一些细节的情况下实施。下面对实施例的描述仅仅是为了通过示出本公开的示例来提供对本公开更好的理解。
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”。
本公开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公开的一些可选实施例的电池模组进行详细说明。
图1、图2分别示出根据本公开第一实施例的电池模组的立体图、立体分解图。电池模组1可以包括电池组11、盖板12等，在一些实施例中，电池模组1还可以包括线束隔离板14、汇流件15以及电路板16等。此外，在本实施例中，电池模组1还包括热敏组件13，热敏组件13用于在单体电池发生热失控时提供提示。
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。
线束隔离板14位于电池组11上，用于安装电路板16等部件以及将电路板16等部件与电池组11隔离。在一些实施例中，线束隔离板14设有多个电极开口141，使得电池组11的多个单体电池111的电极1112在电极开口141处暴露。
电路板16可以安装在线束隔离板14上，电路板16包括本体161以及多个采样端子162，采样端子162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16为柔性电路板(Flexible Printed Circuit，FPC)，采样端子162可以自本体161向外伸出，以便于与单体电池111连接。电路板16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16。
电路板16可以与电池包的BMS电连接，电路板16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162可以与单体电池111的电极1112连接。在本实施例中，电池模组1还包括汇流件15，汇流件15连接单体电池111的电极1112，电路板16的采样端子162通过汇流件15与单体电池111连接。
可以理解的是，上述电路板16在电池模组1中的固定安装方式、以及电路板16与单体电池111连接的电连接方式只是一种示例。在其它一些实施例中，电路板16不限于是通过线束隔离板14在电池模组1中的安装固定，电路板16的采样端子162也不限于通过汇流件15与单体电池111电连接，安装方式以及电连接方式可以根据模组结构设计进行调整。
盖板12位于电池组11上，本实施例中，盖板12位于电路板16上。在一些实施例中，盖板12可以通过盖板连接件121与电池组11和/或线束隔离板14连接，盖板连接件121例如是卡扣连接件。
盖板12可以是云母材质，具有一定的防火、隔热性能，在单体电池111发生热失控时能够减缓火势的蔓延。
图3示出根据本公开第一实施例的盖板及热敏组件的立体分解图，本实施例的热敏组件13位于电池组11与盖板12之间，热敏组件13与盖板12连接。在一些实施例中，热敏组件13连接于盖板12的朝向电池组11的表面，盖板12连接的热敏组件13的数量可以是单个，也可以是两个或多个。
图4和图5示出根据本公开第一实施例的热敏组件的立体分解图，热敏组件13包括热敏导线131，热敏导线131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。
根据本公开实施例的电池模组1，其包括位于电池组11上的盖板12以 及设置在电池组11与盖板12之间的热敏组件13，热敏组件13包括热敏导线131。当单体电池111发生热失控时，其防爆阀1111爆喷使得热敏组件13加热，热敏导线131在受到加热的部分转变为熔融状态，从而断开或熔融搭接，形成断路或短路的信号，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，使得电池模组1在使用中具有热失控预警性能。
此外，当单体电池111发生热失控时，由于盖板12具有一定的防火和隔热能力，避免单体电池111热失控形成的火苗快速蔓延至电池模组1外，综合其热失控预警性能，提高电池模组1在使用中的安全性。
在包括本公开实施例的电池模组的电池包中，热敏组件13可以与BMS电连接，即将其热敏导线131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，BMS检测到的是热敏导线131在正常工况的通路信号。当单体电池111发生热失控时，其防爆阀1111爆喷使得热敏导线131加热，热敏导线131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，热敏导线131在受到加热的部分转变为熔融状态，使得线路短接或断开，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，热敏导线131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，提高电池模组及电池包在应用中的可靠性和安全性。
在本实施例中的每个单体电池111中，防爆阀1111位于其顶盖组件而定中心区域。在一些实施例中，电池组11的多个单体电池111排布为至少一列，使得每列单体电池111的防爆阀1111共线设置。每列单体电池111的设置防爆阀1111的一侧设有至少一个热敏组件13。其中，每个热敏组件13的热敏导线131在电池组11的多个单体电池111的防爆阀1111所在平面的投影穿过对应列单体电池111的防爆阀1111。
本实施例中，每列单体电池111上(即每列单体电池111设置防爆阀1111的一侧)对应设有一个热敏组件13，且该热敏组件13的热敏导线131在上述防爆阀1111所在平面的投影穿过对应列单体电池111的防爆阀1111。根据本实施例的电池模组1，任意至少一个单体电池111的防爆阀1111出现异常而爆喷时，都能迅速加热热敏组件13，使得热敏组件13的热敏导线131能够迅速提供上述的提示信号。
在本实施例中，热敏导线131可以是锡线，在一些实施例中为含有松香助焊剂的锡线。热敏导线131包括输入端131a和输出端131b，在一些实施例中，热敏导线131的输入端131a和输出端131b均连接至BMS，正常工况下BMS检测到热敏导线131是通路。当单体电池111发生热失控时其防爆阀1111爆喷时，其上方区域的锡线感测到高温，会立即变成熔融状态，且向两边吸附成球形而断开，热敏导线131从原本的通路转变为断路，该断路的信号能够作为提示信号，迅速向外界(例如向BMS)传递单体电池111发生热失控的信息。
如图4、图5，在一些实施例中，热敏组件13还包括覆盖物132，覆盖物132与盖板12连接。覆盖物132内部可以设有容纳腔，热敏导线131的至少部分结构位于容纳腔内。覆盖物132容纳热敏导线131，并且与盖板12连接，能够实现热敏导线131与盖板12的集成。
在一些实施例中，覆盖物132包括第一覆盖层1321，第一覆盖层1321可以是云母、聚酰胺6(PA6)等绝缘材料。第一覆盖层1321的朝向盖板12的表面设有容纳槽1321s，该容纳槽1321s形成至少部分容纳腔。在一些实施例中，容纳槽1321s与热敏导线131的绕制形状匹配。第一覆盖层1321可以直接或间接与盖板12连接。
在一些实施例中，覆盖物132还包括第二覆盖层1322，第二覆盖层1322可以是云母、聚酰胺6(PA6)等绝缘材料。第二覆盖层1322与第一覆盖层1321相互层叠设置，从而将容纳槽1321s至少部分围合形成容纳腔。在本实施例中，覆盖物132可以通过第二覆盖层1322与盖板12连接，热敏导线131至少部分容纳于第二覆盖层1322与第一覆盖层1321共同围合形成的容纳腔腔内，从而实现热敏导线131与盖板12的集成。
在本实施例中，覆盖物132具有朝向盖板12的第一表面132a，该第一表面132a与盖板12热压接合、或粘接、或吸附连接，使得覆盖物132与盖板12集成为一体。
覆盖物132沿第一方向X延伸，在一些实施例中，第一方向X为平行于每列单体电池111的堆叠方向。覆盖物132在第一方向X上具有相对的两个端面132c。热敏导线131包括输入端131a和输出端131b，本实施例的热敏导线131呈U型结构设置，并且热敏导线131的输入端131a和输出端131b自覆盖物132的其中一个端面132c伸出。
在一些实施例中，热敏组件13还包括电连接器134，每条热敏导线131的输入端131a、输出端131b与电连接器134连接，以方便将热敏导线131与BMS等系统进行电连接。
在一些实施例中，每个覆盖物132的容纳腔内容纳有两条以上热敏导线131。例如在本实施例中，每个覆盖物132的容纳腔内容纳有两条热敏导线131，其中两条热敏导线131均呈U型结构延伸设置，第一覆盖层1321上的容纳槽1321s也可以呈U型延伸设置，从而同时容纳两条热敏导线131。通过在每个覆盖物132的容纳腔内设置两条以上热敏导线131，能够有效提高检测防爆阀1111爆喷现象的准确度，从而有效降低误报现象的出现，降低误报的百万分率缺陷率(Parts per million，PPM)。
在上述本公开第一实施例的电池模组1中，热敏组件13通过自身的覆盖物132与盖板12热压接合、或粘接、或吸附连接，使得热敏组件13与盖板12集成为一体，然而热敏组件13与盖板12的集成连接方式可以不限于此。
图6和图7示出根据本公开第二实施例的热敏组件的立体分解图，第二实施例的热敏组件13与第一实施例的热敏组件13的结构大部分相似，在此不再详述。与第一实施例不同的是，在本实施例中，热敏组件13包括覆盖物132，覆盖物132通过连接件19与盖板12连接。其中，连接件19例如是螺栓连接件，从而实现热敏组件13与盖板12的可拆卸集成。
进一步地，覆盖物132具有朝向盖板12的第一表面132a和背向盖板12的第二表面132b，覆盖物132还设有贯穿第一表面132a、第二表面132b 的连接孔13h。连接件19穿设在连接孔13h内并将覆盖物132与盖板12可拆卸连接。
覆盖物132上设置的连接孔13h的数量可以根据实际需要调整设置，在一些实施例中，覆盖物132上设有两个连接孔13h，两个连接孔13h分别位于覆盖物132沿第一方向X的两端。在一些实施例中，连接孔13h与容纳腔相互避位设置，以避免连接件19对容纳腔内热敏导线131的干涉。
根据本公开实施例的电池模组1及包括该电池模组1的电池包，在一些实施例中可以根据实际电池模组1的结构选择不同的集成方案实现热敏组件13与盖板12的集成，以提供提供单体电池111发生热失控的提示信号。同时，热敏组件13的引入集成不与电池模组1内部其它结构形成冲突，从而无需对电池模组1内除盖板12外的其它结构进行额外设计，能够较大限度的保证原有电池模组1的生产进度。
同时，热敏组件13与盖板12之间形成模块化集成设计，标准模块化的设计能够更大程度的实现生产通用性、装配一致性，以及保证不同设计方案的可操作性。由于标准化、模块化，故减小了电池模组产品的设计成本，以及加快了单一产品的生产效率，可以有效降低物料的成本。
依照本公开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，也不限制该公开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公开的原理和实际应用，从而使所属技术领域技术人员能很好地利用本公开以及在本公开基础上的修改使用。本公开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)；
    盖板(12)，位于所述电池组(11)上；以及
    热敏组件(13)，位于所述电池组(11)与所述盖板(12)之间，所述热敏组件(13)与所述盖板(12)连接，所述热敏组件(13)包括热敏导线(131)，所述热敏导线(131)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，所述热敏导线(131)配置为在所述单体电池(111)的所述防爆阀(1111)发生爆喷时断开，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)，其中，所述热敏组件(13)还包括覆盖物(132)，所述覆盖物(132)与所述盖板(12)连接，所述覆盖物(132)内部设有容纳腔，所述热敏导线(131)的至少部分结构位于所述容纳腔内。
  4. 根据权利要求3所述的电池模组(1)，其中，所述覆盖物(132)包括第一覆盖层(1321)，所述第一覆盖层(1321)的朝向所述盖板(12)的表面设有容纳槽(1321s)，形成至少部分所述容纳腔。
  5. 根据权利要求4所述的电池模组(1)，其中，所述覆盖物(132)还包括第二覆盖层(1322)，所述第二覆盖层(1322)与所述第一覆盖层(1321)相互层叠设置，使得所述容纳槽(1321s)至少部分围合形成所述容纳腔。
  6. 根据权利要求3所述的电池模组(1)，其中，所述覆盖物(132)具有朝向所述盖板(12)的第一表面(132a)，所述第一表面(132a)与所述盖板(12)热压接合、或粘接、或吸附连接。
  7. 根据权利要求3所述的电池模组(1)，其中，所述覆盖物(132)通过连接件(19)与所述盖板(12)连接。
  8. 根据权利要求7所述的电池模组(1)，其中，所述覆盖物(132)具有朝向所述盖板(12)的第一表面(132a)和背向所述盖板(12)的第二表面(132b)，所述覆盖物(132)还设有贯穿所述第一表面(132a)、所述第二表面(132b)的连接孔(13h)，所述连接件(19)穿设在所述连接孔(13h)内并将所述覆盖物(132)与所述盖板(12)可拆卸连接。
  9. 根据权利要求3所述的电池模组(1)，其中，所述覆盖物(132)沿第一方向(X)延伸，所述覆盖物(132)在所述第一方向(X)上具有相对的两个端面(132c)，所述热敏导线(131)包括输入端(131a)和输出端(131b)，所述热敏导线(131)呈U型结构设置，并且所述热敏导线(131)的所述输入端(131a)和所述输出端(131b)自所述覆盖物(132)的其中一个所述端面(132c)伸出。
  10. 根据权利要求9所述的电池模组(1)，其中，所述热敏组件(13)还包括电连接器(134)，所述热敏导线(131)的所述输入端(131a)、所述输出端(131b)与所述电连接器(134)连接。
  11. 根据权利要求3所述的电池模组(1)，其中，每个所述覆盖物(132)的所述容纳腔内容纳有两条以上所述热敏导线(131)。
  12. 根据权利要求1所述的电池模组(1)，其中，所述电池组(11)的多个所述单体电池(111)排布为至少一列，使得每列所述单体电池(111)的所述防爆阀(1111)共线设置；
    每列所述单体电池(111)的设置所述防爆阀(1111)的一侧设有至少一个所述热敏组件(13)，其中，每个所述热敏组件(13)的所述热敏导线(131)在所述电池组(11)的多个所述单体电池(111)的防爆阀(1111)所在平面的投影穿过对应列所述单体电池(111)的所述防爆阀(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)的热敏组件(13)的热敏导线(131)与所述电池管理系统模块电连接。
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EP3761397A1 (en) 2021-01-06
EP3761397A4 (en) 2021-10-13
CN209822756U (zh) 2019-12-20
US11251500B2 (en) 2022-02-15
US20210242530A1 (en) 2021-08-05
PL3761397T3 (pl) 2023-04-17
EP3761397B1 (en) 2023-02-22

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