WO2021098387A1 - 电池模组和车辆 - Google Patents

电池模组和车辆 Download PDF

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Publication number
WO2021098387A1
WO2021098387A1 PCT/CN2020/118764 CN2020118764W WO2021098387A1 WO 2021098387 A1 WO2021098387 A1 WO 2021098387A1 CN 2020118764 W CN2020118764 W CN 2020118764W WO 2021098387 A1 WO2021098387 A1 WO 2021098387A1
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WO
WIPO (PCT)
Prior art keywords
sampling
thermally conductive
connecting piece
piece
plate
Prior art date
Application number
PCT/CN2020/118764
Other languages
English (en)
French (fr)
Inventor
莫违华
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.)
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 EP20891229.5A priority Critical patent/EP3920310A4/en
Publication of WO2021098387A1 publication Critical patent/WO2021098387A1/zh
Priority to US17/563,883 priority patent/US20220123382A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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]
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the embodiments of the present application relate to the technical field of battery preparation, in particular to a battery module and a vehicle.
  • the temperature of the electrical connection pieces connected to different battery cells is generally collected as the battery temperature. Since the electrical connection piece is connected to the electrode terminal of the battery cell, in most cases, the temperature inside the battery cell can be conducted to the electrical connection piece through the electrode terminal. However, under certain over-current conditions, the sampling temperature collected by this method of collecting temperature will have a relatively large deviation from the actual temperature inside the battery cell.
  • the first aspect of the present application provides a battery module, including:
  • Multiple battery cells including battery top cover
  • the heat-conducting sampling piece is attached to the top cover of the battery
  • Thermally conductive connecting piece one end of the thermally conductive connecting piece is attached to the thermally conductive sampling piece;
  • the circuit board is arranged above the top cover of the battery, and the other end of the thermally conductive connecting piece is connected to the circuit board;
  • the temperature measuring element is electrically connected to the circuit board, and the temperature measuring element is configured to collect the temperature signal of the thermally conductive connecting piece and transmit it to the circuit board.
  • the temperature inside the battery cell can be reflected to the temperature measuring element through the thermally conductive sampling piece and the thermally conductive connecting piece, and the temperature measuring element transmits the measured battery temperature signal to the circuit board to achieve real-time and accurate collection of the battery cell temperature.
  • the thermally conductive sampling member includes a sampling block, the bottom of the sampling block is attached to the top cover of the battery, and the top of the sampling block is attached to the thermally conductive connecting piece.
  • the sampling block has a simple structure and is easy to manufacture and assemble.
  • the thermally conductive sampling member includes a sampling plate, and the sampling plate is fixedly connected to the thermally conductive connecting piece.
  • the sampling board includes a first sampling board attached to the battery top cover, a third sampling board attached to the thermally conductive connecting sheet, and a second sampling board connected to the first sampling board and the third sampling board.
  • the sampling plate is bent, and the first sampling plate and the third sampling plate are respectively located on two sides of the second sampling plate and extend in a direction away from the second sampling plate.
  • the thermally conductive sampling piece includes a bendable sampling piece crimping plate arranged on the sampling plate, and the sampling piece crimping plate is bent to fit the thermally conductive connecting piece to connect the thermally conductive sampling piece and the thermally conductive connecting piece; and/or,
  • the thermally conductive connecting piece includes a thermally conductive connecting piece body and a bendable connecting piece crimping plate provided on the thermally conductive connecting piece body.
  • the connecting piece crimping plate is bent to fit the thermally conductive sampling piece to connect the thermally conductive sampling piece and the thermally conductive connection sheet.
  • the sampling piece crimping plate includes a bendable sampling piece ear plate arranged on the sampling plate; and/or,
  • the connecting piece crimping plate includes a connecting piece lug plate arranged on the main body of the thermally conductive connecting piece.
  • the sampling piece crimping plate includes a bendable sampling piece convex ring extending from the plate surface of the sampling plate away from the plate surface.
  • the thermally conductive connecting piece is provided with sampling piece convex ring perforations for the sampling piece convex ring to penetrate.
  • the convex ring of the sampling piece penetrates the perforation of the convex ring of the sampling piece and is bent to fit with the thermally conductive connecting piece to connect the thermally conductive connecting piece and the thermally conductive sampling piece; and/or,
  • the connecting piece crimping plate includes a bendable connecting piece convex ring extending from the plate surface of the connecting piece body away from the side of the plate surface.
  • the sampling plate is provided with a connecting piece convex ring perforation through which the connecting piece convex ring penetrates.
  • the convex ring of the connecting piece is penetrated into the perforation of the convex ring of the connecting piece and then bent to fit the thermally conductive sampling piece to connect the thermally conductive connecting piece and the thermally conductive sampling piece.
  • the sampling plate and the thermally conductive connecting piece are connected by fasteners and/or adhesives.
  • the thermally conductive connecting piece is a flat connecting piece or a bent connecting piece.
  • the thermally conductive sampling element includes a base and a socket provided on the base, the base is attached to the top cover of the battery, and the thermally conductive connecting piece is inserted into the socket and attached to the side wall of the socket.
  • the thermally conductive sampling member is formed by bending a strip-shaped plate.
  • a strip-shaped plate is used to bend to form a thermally conductive sampling piece, which is easy to manufacture and install, and is convenient and quick to use.
  • the thermally conductive connecting piece is a bent connecting piece, and includes a first connecting portion and a second connecting portion forming an angle with the first connecting portion, the first connecting portion is inserted into the socket, and the second connecting portion Connect to the circuit board.
  • the second aspect of the application provides a vehicle, including:
  • Power source the power source provides power for the vehicle
  • the battery module is configured to supply power to the power source.
  • the battery module arranges the temperature sampling part on the surface of the battery top cover of the battery cell, the heat inside the battery cell can be quickly conducted to the battery top cover, and heat conduction is arranged on the battery top cover.
  • the sampling piece is connected to the thermal sampling piece and the temperature measuring element through a thermally conductive connecting piece attached to the thermally conductive sampling piece.
  • the temperature inside the battery cell can be reflected to the temperature measuring element through the thermally conductive sampling piece and the thermal connecting piece.
  • the measured battery temperature signal is transmitted to the circuit board to realize battery temperature sampling.
  • the temperature of the battery top cover usually does not appear to be inconsistent with the internal temperature of the battery cell with different working conditions, so it is helpful to solve the problem of the sampling temperature collected when the battery temperature is collected through the electrical connection sheet and the actual temperature inside the battery cell The problem of large temperature difference is conducive to real-time and accurate collection of battery cell temperature.
  • FIG. 1 is a schematic structural diagram of a battery module according to an embodiment of the application.
  • FIG. 2 is a schematic diagram of the structure of the battery cells of the battery module of the embodiment shown in FIG. 1.
  • FIG. 3 is a schematic diagram of the structure of the thermally conductive sampling member of the battery module of the embodiment shown in FIG. 1.
  • FIG. 4 is a schematic structural diagram of a combined structure formed by the circuit board of the battery module of the embodiment shown in FIG. 1 and the thermally conductive connecting sheet connected to the circuit board.
  • FIG. 5 is a schematic structural diagram of a battery module according to another embodiment of the application.
  • FIG. 6 is a schematic structural diagram of the thermally conductive sampling member of the battery module of the embodiment shown in FIG. 5.
  • FIG. 7 is a schematic structural diagram of a combined structure formed by the circuit board of the battery module and the thermally conductive connecting sheet connected to the circuit board in the embodiment shown in FIG. 5.
  • FIG. 8 is a schematic structural diagram of a battery module according to another embodiment of the application.
  • FIG. 9 is a schematic structural diagram of the thermally conductive sampling member of the battery module of the embodiment shown in FIG. 8.
  • FIG. 10 is a schematic structural diagram of a combined structure formed by the circuit board of the battery module in the embodiment shown in FIG. 8, the thermally conductive connecting sheet connected to the circuit board, and the thermally conductive sampling member.
  • FIG. 11 is a schematic structural diagram of a battery module according to another embodiment of the application.
  • FIG. 12 is a schematic structural diagram of the thermally conductive sampling member of the battery module of the embodiment shown in FIG. 11.
  • FIG. 13 is a schematic structural diagram of a combined structure formed by the circuit board of the battery module and the thermally conductive connecting sheet connected to the circuit board in the embodiment shown in FIG. 11.
  • FIG. 14 is a schematic structural view of a combined structure formed by the circuit board of the battery module of the embodiment shown in FIG. 11, the thermally conductive connecting sheet connected to the circuit board, and the thermally conductive sampling member.
  • FIG. 15 is a schematic structural diagram of a battery module according to another embodiment of the application.
  • FIG. 16 is a schematic structural diagram of the thermally conductive sampling member of the battery module of the embodiment shown in FIG. 15.
  • FIG. 17 is a schematic structural diagram of a combined structure formed by the circuit board of the battery module and the thermally conductive connecting sheet connected to the circuit board in the embodiment shown in FIG. 15.
  • FIG. 18 is a schematic structural diagram of a combined structure formed by the circuit board of the battery module in the embodiment shown in FIG. 15, the thermally conductive connecting sheet connected to the circuit board, and the thermally conductive sampling member.
  • FIG. 19 is a schematic structural diagram of a battery module according to another embodiment of the application.
  • FIG. 20 is a schematic structural diagram of the thermally conductive sampling member of the battery module of the embodiment shown in FIG. 19.
  • FIG. 21 is a schematic structural diagram of a combined structure formed by the circuit board of the battery module and the thermally conductive connecting sheet connected to the circuit board in the embodiment shown in FIG. 19.
  • FIG. 22 is a schematic structural diagram of a combined structure formed by the circuit board of the battery module in the embodiment shown in FIG. 19, the thermally conductive connecting sheet connected to the circuit board, and the thermally conductive sampling member.
  • orientation words such as “front, back, up, down, left, right", “horizontal, vertical, vertical, horizontal” and “top, bottom” and other directions indicate the orientation Or positional relationship is usually based on the positional or positional relationship shown in the drawings, which is only used to facilitate the description of the application and simplify the description. Unless otherwise stated, these positional words do not indicate or imply the pointed device or element It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the scope of protection of the present application; the orientation word “inside, outside” refers to the inside and outside relative to the contour of each component itself.
  • an embodiment of the present application provides a battery module.
  • the battery module includes a plurality of battery cells 1, a heat-conducting sampling piece, a heat-conducting connecting piece, a temperature measuring element 18 and a circuit board 4.
  • the battery cell 1 includes a battery top cover 102.
  • the thermally conductive sampling piece is attached to the battery top cover 102.
  • the battery top cover 102 is provided with a temperature sampling area 1021, and the thermally conductive sampling member is attached to the temperature sampling area 1021 on the battery top cover 102.
  • One end of the thermally conductive connecting piece is attached to the thermally conductive sampling piece.
  • the circuit board 4 is arranged above the battery top cover 102.
  • the other end of the thermally conductive connecting piece is connected to the circuit board 4.
  • the temperature measuring element 18 is electrically connected to the circuit board 4, and the temperature measuring element 18 collects the temperature signal of the thermally conductive connecting piece and transmits it to the circuit board 4.
  • the temperature sampling location is arranged on the surface of the battery top cover 102 of the battery cell 1, and the heat inside the battery cell 1 can be quickly conducted to the battery top cover 102.
  • a thermally conductive sampling piece is arranged on the battery top cover 102, and then thermally coupled with the temperature measuring element 18 through a thermally conductive connecting piece attached to the thermally conductive sampling piece, and the temperature inside the battery cell 1 can be connected through the thermally conductive sampling piece and the thermally conductive connection.
  • the chip is reflected to the temperature measuring element 18, and the temperature measuring element 18 transmits the measured temperature signal to the circuit board 4 to realize the temperature sampling of the battery cell 1.
  • the temperature inside the battery cell 1 can be quickly transmitted to the battery top cover 102, and the temperature of the battery top cover 102 usually does not appear to be inconsistent with the internal temperature of the battery cell 1 depending on the working conditions, it is helpful to solve the problem.
  • the problem of a large temperature difference between the sampling temperature collected by the electrical connecting piece when collecting the temperature of the battery cell 1 and the actual temperature inside the battery cell 1 is conducive to real-time and accurate collection of the temperature of the battery cell 1.
  • the relative position of the thermally conductive sampling piece and the thermally conductive connecting piece can be adjusted appropriately, and the corresponding parts of each contact part of the heat transfer path are closely spaced.
  • the bonding also helps to reduce the stress generated by the thermally conductive connecting piece on the circuit board 4.
  • FIGS. 1 to 4 show the structure of a battery module according to an embodiment of the present application.
  • the battery module includes a battery cell 1, a thermally conductive sampling member 2, a thermally conductive connecting piece 3, a circuit board 4, a temperature measuring element 18, a side plate 19, an end plate 20 and an electrical connecting piece 21.
  • the circuit board 4 is a flexible circuit board.
  • a plurality of battery cells 1 are arranged in an array to form a battery pack.
  • 6 battery cells 1 are arranged in an array of 1 column and 6 rows.
  • Two side plates 19 are respectively arranged on the outer sides of two opposite sides of the battery pack;
  • two end plates 20 are respectively arranged on the outer sides of the opposite end faces of the battery pack.
  • the two side plates 19 and the two end plates 20 enclose a accommodating space for accommodating the battery pack.
  • Each electrical connection piece 21 connects different battery cells 1.
  • the battery cell 1 includes a case 101, a battery top cover 102, an electrode assembly (not shown), a top patch 103, a positive terminal 104, a negative terminal 105 and an explosion-proof valve 106.
  • the battery top cover 102 is arranged on the top of the casing 101 and surrounds the casing 101 with a receiving part for accommodating the electrode assembly.
  • the positive electrode terminal 104 and the negative electrode terminal 105 are respectively connected to the positive electrode and the negative electrode of the electrode assembly and protrude from the battery top cover 102.
  • the explosion-proof valve 106 is arranged on the battery top cover 102.
  • a temperature sampling area 1021 is provided on the battery top cover 102.
  • the top patch 103 is attached to the upper surface of the battery top cover 102.
  • a temperature sampling opening is opened on the top patch 103, and the part of the battery top cover 102 exposed at the temperature sampling opening is the temperature sampling area 1021.
  • the temperature sampling area 1021 is a square area provided between the positive terminal 104 and the negative terminal 105.
  • the thermally conductive connecting piece 2 is attached to the temperature sampling area 1021 between the explosion-proof valve 106 and the negative terminal 105.
  • the position and shape of the temperature sampling area can be changed according to actual conditions.
  • the temperature measuring element 18 includes a thermistor.
  • the temperature measuring element 18 is connected to the thermally conductive connecting piece 3 to collect the temperature signal of the thermally conductive connecting piece 3, and the temperature of the thermally conductive connecting piece 3 can represent the temperature of the battery cell 1.
  • the circuit board 4 is arranged above the battery top cover 102 of the plurality of battery cells 1, and the temperature measuring element 18 is electrically connected to the circuit board 4 to transmit the temperature signal of the thermally conductive connecting piece 3 to the circuit board 4.
  • the temperature measuring element 18 is arranged on the circuit board 4. For example, it is electrically connected to the circuit board 4 by welding.
  • the thermally conductive connecting piece 3 and the circuit board 4 are connected by welding, and the part of the thermally conductive connecting piece 3 connected with the circuit board 4 has a avoiding hole, and the temperature measuring element 18 is located in the avoiding hole.
  • the thermally conductive connecting piece 3 may directly contact the temperature measuring element 18 to transfer heat to the temperature measuring element 18, or the heat of the thermally conductive connecting piece 3 may be transferred to the temperature measuring element 18 through a thermally conductive glue.
  • the thermally conductive connecting piece 3 and the temperature measuring element 18 are connected to the circuit board 4 at the same time, and the area where the thermally conductive connecting piece 3 and the circuit board 4 are connected is located around the area where the temperature measuring element 18 is connected to the circuit board 4.
  • the above connection method can make the heat transfer path from the battery cell 1 to the temperature measuring element 18 shorter, which is conducive to transmitting the temperature signal of the thermally conductive connecting piece 3 to the circuit board 4 in a timely manner.
  • the thermally conductive sampling member 2 includes a sampling block.
  • the bottom surface of the sampling block is attached to the temperature sampling area 1021, and the top surface of the sampling block is attached to the bottom surface of the thermally conductive connecting piece 3.
  • the sampling block has a simple structure and is easy to manufacture and assemble.
  • the sampling block is a square sampling block. In an embodiment that is not shown, the sampling block may also have other shapes, for example, a cylindrical shape.
  • the material of the sampling block can be metal or thermally conductive non-metallic material.
  • the thermally conductive connecting piece 3 is a flat-plate-shaped connecting piece.
  • the material of the thermally conductive connecting piece 3 may be a metal or a thermally conductive non-metallic material.
  • the thermally conductive sampling element 2 is fixed to the temperature sampling area 1021.
  • the fixing method may be directly bonded to the temperature sampling area 1021 through a thermally conductive sampling member 2 made of a self-adhesive material (such as silicone rubber), or may be connected by thermally conductive adhesive bonding, welding, or the like.
  • the thermally conductive connecting piece 3 is fixed to the thermally conductive sampling member 2.
  • the fixing method can be directly bonded to the thermally conductive connecting sheet 3 through the thermally conductive sampling member 2 made of self-adhesive material (such as silicone rubber), or can be connected through thermally conductive glue bonding, welding, or the like.
  • the heat in the temperature sampling area 1021 on the surface of the battery top cover 102 is conducted to the temperature measuring element 18 on the circuit board 4 through the thermally conductive sampling member 2 and the thermally conductive connecting piece 3, so as to achieve real-time and accurate sampling of the temperature of the battery cell 1 , Monitor the temperature change of the battery cell 1.
  • the thermally conductive sampling member 5 includes a base and a socket 53 provided on the base.
  • the base is attached to the temperature sampling area 1021.
  • the thermally conductive connecting piece 6 is inserted into the socket 53 and is attached to the side wall of the socket 53.
  • the heat-conducting sampling piece 5 with the socket 53 is adopted, which is convenient and quick to assemble.
  • the thermally conductive connecting piece 6 is a bent connecting piece, and the bent connecting piece includes a first connecting portion 61 and a second connecting portion 62 forming an angle with the first connecting portion 61.
  • the first connecting portion 61 is plugged into the socket 53, and the second connecting portion 62 is connected with the temperature measuring element 18.
  • first connecting portion 61 is perpendicular to the battery top cover 102
  • second connecting portion 62 is parallel to the battery top cover 102.
  • the first connecting portion 61 and the second connecting portion 62 form a right angle.
  • the first connecting portion and the second connecting portion may form other angles, and the position and direction of the socket are matched with the first connecting portion.
  • the thermally conductive connecting piece is not limited to the above forms, as long as it cooperates with the socket of the corresponding thermally conductive sampling member to collect the temperature of the battery top cover 102.
  • the thermally conductive connecting piece may be formed by three or more connecting portions to form a bent connecting piece.
  • the thermally conductive sampling member 5 is formed by bending a strip-shaped plate.
  • the strip plate includes a middle plate section 51 and two end plate sections 52 located at both ends of the middle plate section 51.
  • the two end plate sections 52 respectively form a first end plate section 521, a second end plate section 522, and a third end plate section 523 that are sequentially connected starting from the middle plate section 51.
  • the two first end plate sections 521 are located above the middle plate section 51 and fold toward the middle of the middle plate section 51 so as to be folded to fit the upper surface of the middle plate section 51.
  • the two second end plate section parts 522 continue to extend from the respective connected first end plate section parts 521 to the middle part of the middle plate section 51 and are inclined toward the direction away from the upper surface of the middle plate section 51.
  • the two third end plate section parts 523 extend from the respective connected second end plate section parts 522 to both ends of the middle plate section 51 and are inclined in a direction away from the upper surface of the middle plate section 51.
  • the base includes a middle plate section 51 and two first end plate section parts 521.
  • the two second end plate section parts 522 and the two third end plate section parts 523 constitute a socket structure with an X-shaped cross section.
  • the second end plate section portion 522 and the third end plate section portion 523 of one end plate section 52 and the second end plate section portion 522 and the third end plate section portion of the other end plate section 52 The interval between 523 forms the socket 53.
  • Each of the second end plate section portions 522 and each of the third end plate section portions 523 forms a side wall of the socket 53.
  • a strip-shaped plate is used to bend to form the heat-conducting sampling piece 5, which is easy to manufacture and install, and is convenient and quick to use.
  • the thermally conductive sampling piece with socket may be another form of sampling structure with socket that can fulfill the function of the thermally conductive sampling piece, such as a sampling block with socket.
  • the form of the thermally conductive connecting piece is not limited to the bent connecting piece, as long as it can cooperate with the thermally conductive sampling piece and the temperature measuring element, it can also be a flat connecting piece.
  • Figures 8 to 10 show the structure of a battery module according to another embodiment of the present application.
  • the difference between this embodiment and the previous embodiment lies in the structure of the thermally conductive sampling member 7 and the thermally conductive connecting piece 8.
  • the following describes the differences between this embodiment and the foregoing embodiment.
  • the thermally conductive sampling element 7 includes a sampling plate.
  • the sampling board includes a first sampling board 71, a second sampling board 72, and a third sampling board 73 that are sequentially connected. Both the first sampling plate 71 and the third sampling plate 73 extend toward a side away from the surface of the second sampling plate 72. The first sampling plate 71 and the third sampling plate 73 extend in opposite directions.
  • the first sampling plate 71 is attached to the temperature sampling area 1021.
  • the third sampling plate 73 is attached to the thermally conductive connecting sheet 8.
  • the thermally conductive sampling member 7 of this embodiment can adjust the relative angle between the first sampling plate 71, the second sampling plate 72 and the third sampling plate 73 by appropriately adjusting the angle between the first sampling plate 71 and the third sampling plate 73.
  • Position, so as to better adapt to the relative position between the thermally conductive connecting piece 8 and the battery top cover 102, which is conducive to the sampling thermally conductive member 7 and the thermally conductive connecting piece 8 and the battery top cover 102 are closely attached, thereby helping to ensure the temperature measurement effect. It is also beneficial to reduce the stress applied to the circuit board 4 by the thermally conductive connecting piece 8.
  • the extension directions of the first sampling plate and the third sampling plate may be the same.
  • the thermally conductive connecting piece 8 is a flat-plate-shaped connecting piece.
  • the third sampling plate 73 of the thermally conductive sampling member 7 is fixedly connected to the thermally conductive connecting piece 8.
  • the thermally conductive sampling element 7 includes a bendable sampling element ear plate 74 arranged on the edge of the third sampling plate 73.
  • the third sampling plate 73 and the thermally conductive connecting piece 8 are connected by bending the sampling piece ear plate 74 to fit the surface of the thermally conductive connecting piece 8.
  • a sampling piece ear plate 74 is respectively provided on opposite sides of the third sampling plate 73.
  • the sampling piece ear plate 74 is bent and located above the thermally conductive connecting piece 8, and the third sampling plate 73 is located on the thermally conductive connecting piece. 8 below.
  • the sampling piece ear plate 74 is provided as a sampling piece crimping plate on the sampling plate, and the sampling piece crimping plate is bent to fit the thermally conductive connecting piece to connect the thermally conductive sampling piece and the thermally conductive connecting piece.
  • the thermally conductive connecting piece may include a thermally conductive connecting piece body and a bendable connecting piece crimping plate provided on the thermally conductive connecting piece body. The connecting piece crimping plate is bent to contact the thermally conductive sampling piece. Fit to connect the thermally conductive sampling piece and the thermally conductive connecting piece.
  • a connecting piece lug plate can be provided on the thermally conductive connecting piece as a connecting piece crimping plate.
  • the thermally conductive connecting piece includes a thermally conductive connecting piece body and a bendable connecting piece ear plate arranged on the edge of the thermally conductive connecting piece body.
  • the connecting piece ear plate is bent to fit the plate surface of the thermally conductive sampling piece to connect to the thermally conductive connecting piece.
  • a connecting piece ear plate may also be provided on the thermally conductive connecting piece, and a sampling piece ear plate may be provided on the thermally conductive sampling piece at the same time.
  • the position of the sampling piece ear plate is not limited to being set on the edge of the corresponding sampling plate, but can also be set at the middle of the corresponding sampling plate. Accordingly, a socket can be provided on the thermally conductive connecting piece. The sampling piece ear plate is inserted to connect the thermally conductive sampling piece and the thermally conductive connecting piece.
  • the connecting piece ear plate can also be arranged in the middle of the thermally conductive connecting piece, and a socket is opened on the thermally conductive sampling piece for the connecting piece ear plate to be inserted to connect the thermally conductive sampling piece and the thermally conductive connecting piece .
  • 11 to 14 show the structure of a battery module according to another embodiment of the present application.
  • the difference between this embodiment and the previous embodiment lies in the structure of the thermally conductive sampling member 9 and the thermally conductive connecting piece 10.
  • the following describes the differences between this embodiment and the foregoing embodiment.
  • the thermally conductive sampling member 9 includes a sampling plate.
  • the sampling board includes a first sampling board 91, a second sampling board 92, and a third sampling board 93 connected in sequence. Both the first sampling plate 91 and the third sampling plate 93 extend toward a side away from the surface of the second sampling plate 92. The first sampling plate 91 and the third sampling plate 93 extend in opposite directions.
  • the first sampling plate 91 is attached to the temperature sampling area 1021.
  • the third sampling plate 93 is attached to the thermally conductive connecting sheet 10.
  • the third sampling plate 93 is provided with a first connecting hole 931.
  • the thermally conductive connecting piece 10 is a flat-shaped connecting piece; the thermally conductive connecting piece 10 is provided with a second connecting hole 1011.
  • the third sampling plate 94 and the thermally conductive connecting sheet 10 are connected by rivets 12 passing through the first connecting hole 931 and the second connecting hole 1011.
  • Figures 15 to 18 show the structure of a battery module according to another embodiment of the present application.
  • the difference between this embodiment and the previous embodiment lies in the structure of the thermally conductive sampling member 13 and the thermally conductive connecting piece 14.
  • the following describes the differences between this embodiment and the foregoing embodiment.
  • the thermally conductive sampling member 13 includes a sampling plate.
  • the sampling board includes a first sampling board 131, a second sampling board 132, and a third sampling board 133 connected in sequence. Both the first sampling plate 131 and the third sampling plate 133 extend toward a side away from the surface of the second sampling plate 132. The first sampling plate 131 and the third sampling plate 133 extend in opposite directions.
  • the first sampling plate 131 is attached to the temperature sampling area 1021.
  • the third sampling plate 133 is attached to the thermally conductive connecting sheet 14.
  • a third connecting hole 1331 is provided on the third sampling plate 133.
  • the thermally conductive connecting piece 14 is a flat connecting piece; the thermally conductive connecting piece 14 is provided with a fourth connecting hole 141.
  • the third sampling plate 133 and the thermally conductive connecting sheet 14 are connected by a screw 15 passing through the fourth connecting hole 141 and threadedly fitting with the third connecting hole 1331.
  • the fourth connecting hole 141 may be a threaded hole that fits with the screw 15, and the fourth connecting hole 141 may also be a light hole.
  • a self-tapping screw can be used to connect the third sampling plate 133 to the thermally conductive connecting piece 14, or the cooperation of a screw and a nut can be used to connect the third sampling plate 13 to the thermally conductive connecting piece 14 .
  • the third sampling plate 133 is provided at a position corresponding to the third connecting hole 1331 There is an annular protrusion protruding downward from the lower surface of the third sampling plate 133, so that the screw 15 is also threadedly fitted with the annular protrusion, so as to increase the connection length with the thermally conductive sampling member 13.
  • the thermally conductive sampling member 16 includes a sampling plate.
  • the sampling board includes a first sampling board 161, a second sampling board 162, and a third sampling board 163 connected in sequence. Both the first sampling plate 161 and the third sampling plate 163 extend toward a side away from the surface of the second sampling plate 162.
  • the first sampling plate 161 and the third sampling plate 163 extend in opposite directions.
  • the first sampling plate 161 is attached to the temperature sampling area 1021.
  • the third sampling plate 163 is attached to the thermally conductive connecting sheet 17.
  • the third sampling plate 163 is provided with a bendable sampling member convex ring 1631 extending from the plate surface of the third sampling plate 163 away from the plate surface.
  • the thermally conductive connecting piece 17 is a flat connecting piece; the thermally conductive connecting piece 17 is provided with a sampling piece convex ring perforation 171 through which the sampling piece convex ring 1631 penetrates.
  • the convex ring 1631 of the sampling member is inserted into the convex ring perforation 171 of the sampling member and then bent to fit the surface of the thermally conductive connecting piece 17 of the sampling plate to connect the thermally conductive connecting piece 17 and the third sampling plate 163.
  • the sampling piece convex ring 1631 is a flat cylindrical sampling piece convex ring.
  • the thermally conductive connecting sheet 17 is attached to the third sampling plate 163, a tool needs to be used to roll the flat cylindrical sampling piece convex ring radially outward.
  • the third sampling plate 163 and the thermally conductive connecting sheet 17 are attached and fixedly connected together.
  • the sampling piece convex ring 1631 is used as an implementation form of the sampling piece crimping plate, which is arranged on the sampling plate, and the sampling piece convex ring 1631 is bent to fit the thermally conductive connecting piece to connect the thermally conductive sampling piece and Thermal connection sheet.
  • the thermally conductive connecting piece may include a connecting piece convex ring.
  • the thermally conductive connecting piece is provided with a connecting piece body and a bendable connecting piece convex ring arranged on the connecting piece body and extending from the side of the connecting piece body away from the board surface.
  • the thermally conductive sampling piece is provided with a connecting piece convex ring. The convex ring of the sampling piece penetrated by the ring is perforated, and the convex ring of the connecting piece is penetrated into the convex ring of the sampling piece and then bent to fit the thermally conductive sampling piece to connect the thermally conductive connecting piece and the thermally conductive sampling piece.
  • the connecting piece convex ring is an implementation form of the connecting piece crimping plate, which is arranged on the connecting piece body, and the connecting piece convex ring is bent to fit the thermally conductive sampling piece to connect.
  • Thermally conductive sampling piece and thermally conductive connecting piece are shown in the figure.
  • the convex ring of the sampling piece is provided on the thermally conductive sampling piece
  • the convex ring of the connecting piece may be provided on the main body of the thermally conductive connecting piece.
  • the thermally conductive connecting pieces may also be bent connecting pieces according to actual needs.
  • the third sampling plate is related to the third sampling plate.
  • the third sampling plate is located below the thermally conductive connecting piece.
  • the third sampling plate may also be located above the thermally conductive connecting piece.
  • the connection between the third sampling plate and the thermally conductive connecting piece is involved, and various connection forms thereof can be used for the connection between sampling plates of other shapes and the thermally conductive connecting piece.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池模组和车辆。电池模组包括：多个电池单体（1），所述电池单体（1）包括电池顶盖（102）；导热采样件（2），与所述电池顶盖（102）贴合；导热连接片（3），所述导热连接片（3）的一端与所述导热采样件（2）贴合；电路板（4），设置于所述电池顶盖（102）上方，所述导热连接片（3）的另一端连接于所述电路板（4）；和测温元件（18），电连接于所述电路板（4），所述测温元件（18）被配置为采集所述导热连接片（3）的温度信号并传递至所述电路板（4）。电池模组利于实现对电池温度的实时准确采集。

Description

电池模组和车辆
本申请要求于2019年11月19日提交中国专利局、申请号为201922000319.5、发明名称为“电池模组和车辆”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
本申请实施例涉及电池制备技术领域，特别涉及一种电池模组和车辆。
背景技术
硬壳电池模组中一般通过采集连接不同的电池单体的电连接片的温度作为电池温度。由于电连接片与电池单体的电极端子相连，因此大部分情况下，电池单体内部的温度可通过电极端子传导到电连接片。但是在特定过流工况下，这种采集温度的方式采集到的采样温度与电池单体内部的实际温度会有比较大的偏差。比如，在短时间大脉冲电流作用下，由于电池单体内部质量大，温度上升慢，而电连接片质量小，自身会产生大量的焦耳热，短时间内无法快速散发出去，导致电连接片和电池单体内部温度差异非常大，此时采集电连接片的温度并不能实时反馈电池单体内部的实际温度。
发明内容
本申请第一方面提供一种电池模组，包括：
多个电池单体，电池单体包括电池顶盖；
导热采样件，与电池顶盖贴合；
导热连接片，导热连接片的一端与导热采样件贴合；
电路板，设置于电池顶盖上方，导热连接片的另一端连接于电路板；和
测温元件，电连接于电路板，测温元件被配置为采集导热连接片的温度信号并传递至电路板。
因此，电池单体内部的温度可以通过导热采样件和导热连接片反映到测温元件，测温元件将测得的电池温度信号传递到电路板，实现对电池单体温度的实时准确采集。
在一些实施例中，导热采样件包括采样块，采样块的底部与电池顶盖贴合，采样块的顶部与导热连接片贴合。采样块结构简单，易于制造和组装。
在一些实施例中，导热采样件包括采样板，采样板与导热连接片固定连接。
在一些实施例中，采样板包括与电池顶盖贴合的第一采样板、与导热连接片贴合的第三采样板以及连接第一采样板和第三采样板的第二采样板。
在一些实施例中，采样板呈弯折状，第一采样板和第三采样板分别位于第二采样板的两侧，并朝向远离第二采样板的方向延伸。
在一些实施例中，
导热采样件包括设置于采样板的可弯折的采样件压接板，通过将采样件压接板弯折至与导热连接片贴合以连接导热采样件与导热连接片；和/或，
导热连接片包括导热连接片主体和设置于导热连接片主体的可弯折的连接片压接板，通过将连接片压接板弯折至与导热采样件贴合以连接导热采样件与导热连接片。
在一些实施例中，
采样件压接板包括设置于采样板的可弯折的采样件耳板；和/或，
连接片压接板包括设置于导热连接片主体的连接片耳板。
在一些实施例中，
采样件压接板包括从采样板的板面向远离该板面一侧延伸的可弯折的采样件凸环，导热连接片上设有供采样件凸环穿入的采样件凸环穿孔，通过将采样件凸环穿入采样件凸环穿孔后并弯折至与导热连接片贴合以连接导热连接片与导热采样件；和/或，
连接片压接板包括从连接片主体的板面向远离该板面一侧延伸的可弯折的连接片凸环，采样板上设有供连接片凸环穿入的连接片凸环穿孔，通过将连接片凸环穿入连接片凸环穿孔后并弯折至与导热采样件贴合以连接导热连接片与导热采样件。
在一些实施例中，采样板与导热连接片通过紧固件和/或粘合剂连接。
在一些实施例中，导热连接片为平板状连接片或弯折状连接片。
在一些实施例中，导热采样件包括底座和设置于底座上的插口，底座与电池顶盖贴合，导热连接片与插口插接并与插口的侧壁贴合。
在一些实施例中，导热采样件由一块条形板弯折形成。采用一块条形板弯折形成导热采样件，制造安装容易，使用方便快捷。
在一些实施例中，导热连接片为弯折状连接片，且包括第一连接部和与第一连接部形成夹角的第二连接部，第一连接部与插口插接，第二连接部连接于电路板。
本申请第二方面提供一种车辆，包括：
动力源，动力源为车辆提供动力；
以及本申请第一方面的电池模组，电池模组被配置为向动力源供电。
上述描述的电池模组和车辆，电池模组将温度采样部位布置在电池单体的电池顶盖的表面，电池单体内部的热量可快速传导到电池顶盖，在电池 顶盖贴合布置导热采样件，再通过一个与导热采样件贴合的导热连接片连接导热采样件和测温元件，电池单体内部的温度即可以通过导热采样件和导热连接片反映到测温元件，测温元件将测得的电池温度信号传递到电路板，实现电池温度采样。电池顶盖的温度通常不会随着工况的不同而呈现与电池单体内部温度不一致的现象，因此利于解决通过电连接片采集电池温度时所采集的采样温度与电池单体内部的实际温度温差较大的问题，利于实现对电池单体温度的实时准确采集。
通过以下参照附图对本申请的示例性实施例的详细描述，本申请的其它特征及其优点将会变得清楚。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。
图1为本申请一实施例的电池模组的结构示意图。
图2为图1所示实施例的电池模组的电池单体的结构示意图。
图3为图1所示实施例的电池模组的导热采样件的结构示意图。
图4为图1所示实施例的电池模组的电路板及与电路板连接的导热连接片等形成的组合结构的结构示意图。
图5为本申请另一实施例的电池模组的结构示意图。
图6为图5所示实施例的电池模组的导热采样件的结构示意图。
图7为图5所示实施例的电池模组的电路板及与电路板连接的导热连接片等形成的组合结构的结构示意图。
图8为本申请又一实施例的电池模组的结构示意图。
图9为图8所示实施例的电池模组的导热采样件的结构示意图。
图10为图8所示实施例的电池模组的电路板及与电路板连接的导热连接片等以及导热采样件形成的组合结构的结构示意图。
图11为本申请又一实施例的电池模组的结构示意图。
图12为图11所示实施例的电池模组的导热采样件的结构示意图。
图13为图11所示实施例的电池模组的电路板及与电路板连接的导热连接片等形成的组合结构的结构示意图。
图14为图11所示实施例的电池模组的电路板及与电路板连接的导热连接片等以及导热采样件形成的组合结构的结构示意图。
图15为本申请又一实施例的电池模组的结构示意图。
图16为图15所示实施例的电池模组的导热采样件的结构示意图。
图17为图15所示实施例的电池模组的电路板及与电路板连接的导热连接片等形成的组合结构的结构示意图。
图18为图15所示实施例的电池模组的电路板及与电路板连接的导热连接片等以及导热采样件形成的组合结构的结构示意图。
图19为本申请又一实施例的电池模组的结构示意图。
图20为图19所示实施例的电池模组的导热采样件的结构示意图。
图21为图19所示实施例的电池模组的电路板及与电路板连接的导热连接片等形成的组合结构的结构示意图。
图22为图19所示实施例的电池模组的电路板及与电路板连接的导热连接片等以及导热采样件形成的组合结构的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本申请及其应用或使用的任何限制。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本申请的范围。同时，应当明白，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，上述技术、方法和设备应当被视为授权说明书的一部分。在这里示出和讨论的所有示例中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以具有不同的值。应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
在本申请的描述中，需要理解的是，使用“第一”、“第二”等词语来限定零部件，仅仅是为了便于对相应零部件进行区别，如没有另行声明，上述词语并没有特殊含义，因此不能理解为对本申请保护范围的限制。
在本申请的描述中，需要理解的是，方位词如“前、后、上、下、左、右”、“横向、竖向、垂直、水平”和“顶、底”等所指示的方位或位置关系通常是基于附图所示的方位或位置关系，仅是为了便于描述本申请和 简化描述，在未作相反说明的情况下，这些方位词并不指示和暗示所指的装置或元件必须具有特定的方位或者以特定的方位构造和操作，因此不能理解为对本申请保护范围的限制；方位词“内、外”是指相对于各部件本身的轮廓的内外。
如图1至图22所示，本申请实施例提供了一种电池模组。该电池模组包括多个电池单体1、导热采样件、导热连接片、测温元件18和电路板4。
电池单体1包括电池顶盖102。导热采样件与电池顶盖102贴合。电池顶盖102上设置有温度采样区1021，导热采样件与电池顶盖102上的温度采样区1021贴合。导热连接片的一端与导热采样件贴合。电路板4设置于电池顶盖102上方。导热连接片的另一端连接于电路板4。测温元件18电连接于电路板4，测温元件18采集导热连接片的温度信号并传递至电路板4。
本申请实施例的电池模组中，将温度采样部位布置在电池单体1的电池顶盖102的表面，电池单体1内部的热量可快速传导到电池顶盖102。在电池顶盖102上贴合布置导热采样件，再通过一个与导热采样件贴合的导热连接片与测温元件18热耦合，电池单体1内部的温度即可以通过导热采样件和导热连接片反映到测温元件18，测温元件18将测得的温度信号传递至电路板4，实现电池单体1温度采样。
由于电池单体1内部的温度可快速传导到电池顶盖102，且电池顶盖102的温度通常不会随着工况的不同而呈现与电池单体1内部温度不一致的现象，因此利于解决通过电连接片采集电池单体1温度时所采集的采样温度与电池单体1内部的实际温度温差较大的问题，利于实现对电池单体1温度的实时准确采集。
由于通过导热采样件和导热连接片将电池顶盖102的热量传递给测温元件18，可以适当调节导热采样件与导热连接片的相对位置，在实现传热路径各接触部位相应部件之间紧密贴合的同时利于减少导热连接片对电路板4 产生应力。
以下结合图1至图22进一步说明本申请各实施方式。
图1至图4示出了本申请一实施例的电池模组的结构。
如图1所示，电池模组包括电池单体1、导热采样件2、导热连接片3、电路板4、测温元件18、侧板19、端板20和电连接片21。电路板4为柔性电路板。
多个电池单体1成阵列排布，形成电池组。例如，在图1中由6个电池单体1排布成1列、6行的阵列。两块侧板19分别设置于电池组相对的两侧面外侧；两块端板20分别设置于电池组的相对的两端面外侧。两块侧板19和两块端板20围成容纳电池组的容纳空间。各电连接片21连接不同的电池单体1。
如图2所示，电池单体1包括壳体101、电池顶盖102、电极组件(未图示)、顶贴片103、正极端子104、负极端子105和防爆阀106。电池顶盖102设置于壳体101的顶部，与壳体101围成容纳电极组件的容纳部。正极端子104和负极端子105与电极组件的正极和负极分别连接并凸出于电池顶盖102。防爆阀106设置于电池顶盖102上。电池顶盖102上设有温度采样区1021。
顶贴片103贴合于电池顶盖102的上表面。在顶贴片103上开设采温开口，采温开口处露出的电池顶盖102部分即为温度采样区1021。
如图1和图2所示，在一些实施例的电池模组中，温度采样区1021为设置于正极端子104和负极端子105之间的方形区域。本实施例中，导热连接片2与防爆阀106和负极端子105之间的温度采样区1021贴合。在未图示的实施例中，温度采样区的位置和形状可以根据实际情况作出变化。
测温元件18包括热敏电阻。测温元件18与导热连接片3连接以采集 导热连接片3的温度信号，导热连接片3的温度可以代表电池单体1的温度。电路板4设置于多个电池单体1的电池顶盖102上方，测温元件18与电路板4电连接，以将导热连接片3的温度信号传递至电路板4。
如图1所示，测温元件18设置于电路板4上。例如通过焊接方式电连接于电路板4上。导热连接片3与电路板4通过焊接方式连接，且导热连接片3的与电路板4连接的部位具有避让孔，测温元件18位于避让孔内。导热连接片3可以与测温元件18直接接触以将热量传递给测温元件18，也可以通过导热胶将导热连接片3的热量传递给测温元件18。
导热连接片3和测温元件18与电路板4同时连接，导热连接片3与电路板4连接的区域位于测温元件18与电路板4连接的区域周围。以上连接方式可以使从电池单体1至测温元件18的热量传递路径更短，利于将导热连接片3的温度信号更及时地传递至电路板4。
如图1和图3所示，在一些实施例的电池模组中，导热采样件2包括采样块。采样块的底面与温度采样区1021贴合，采样块的顶面与导热连接片3的底面贴合。采样块结构简单，易于制造和组装。
本实施例中，采样块为方形采样块。在未图示的实施例中，采样块也可以为其它形状，例如为圆柱形。采样块的材料可以为金属或导热非金属材料。
如图1和图3所示，本实施例中，导热连接片3为平板形连接片。导热连接片3的材料可以为金属或导热非金属材料。
本实施例中，导热采样件2与温度采样区1021固定。固定方式例如可以通过由自带粘性材料(例如硅橡胶)制成的导热采样件2直接粘合于温度采样区1021，也可以通过导热胶粘合、焊接等方式连接。
本实施例中，导热连接片3与导热采样件2固定。固定方式例如可以 通过由自带粘性材料(例如硅橡胶)制成的导热采样件2直接粘合于导热连接片3，也可以通过导热胶粘合、焊接等方式连接。
本实施例中，电池顶盖102表面的温度采样区1021的热量通过导热采样件2和导热连接片3传导到电路板4上的测温元件18，实现对电池单体1的温度实时准确采样，监测电池单体1的温度变化。
图5至图7示出了本申请另一实施例的电池模组的结构。本实施例与其它实施例的不同之处在于其导热采样件5和导热连接片6的结构不同。以下就本实施例与前述实施例的不同之处进行描述。
如图5和图6所示，本实施例中，导热采样件5包括底座和设置于底座上的插口53。底座与温度采样区1021贴合。导热连接片6与插口53插接并与插口53的侧壁贴合。采用带有插口53的导热采样件5，组装方便快速。
如图7所示，导热连接片6为弯折状连接片，弯折状连接片包括第一连接部61和与第一连接部61形成夹角的第二连接部62。第一连接部61与插口53插接，第二连接部62与测温元件18连接。
本实施例中，第一连接部61与电池顶盖102垂直，第二连接部62与电池顶盖102平行。第一连接部61与第二连接部62形成直角。
在未图示的实施例中，第一连接部与第二连接部可形成其它角度，插口的位置与方向与第一连接部配合设置。并且，导热连接片也不限于以上形式，只要其与对应的导热采样件的插口实现配合采集电池顶盖102的温度，例如，导热连接片可以由三个以上连接部形成弯折状连接片。
如图6所示，导热采样件5由一块条形板弯折形成。该条形板包括中部板段51和位于中部板段51两端的两个端部板段52。两个端部板段52从中部板段51开始各自形成顺次相连接的第一端部板段部分521、第二端部板段部分522和第三端部板段部分523。两个第一端部板段部分521位于中部 板段51上方并向中部板段51的中间部位折叠，可折叠至与中部板段51的上表面贴合。两个第二端部板段部分522从各自连接的第一端部板段部分521继续向中部板段51的中间部位延伸并朝向远离中部板段51的上表面的方向倾斜。两个第三端部板段部分523从各自连接的第二端部板段部分522向中部板段51的两端延伸并朝向远离中部板段51的上表面的方向倾斜。
本实施例中，底座包括中部板段51和两个第一端部板段部分521。两个第二端部板段部分522和两个第三端部板段部分523构成截面为X形的插口结构。其中一个端部板段52的第二端部板段部分522与第三端部板段部分523和另一个端部板段52的第二端部板段部分522与第三端部板段部分523之间的间隔形成插口53。各第二端部板段部分522与各第三端部板段部分523均形成插口53的侧壁。
采用一块条形板弯折形成导热采样件5，制造安装容易，使用方便快捷。
在未图示的实施例中，带插口的导热采样件可以为其它形式的能完成导热采样件的功能且带插口的采样结构，例如带插口的采样块。导热连接片的形式也不限于弯折状连接片，只要能实现与导热采样件和测温元件的配合，也可以为平板状连接片。
本实施例中未描述的内容可以参考本申请其余部分的相关描述。
图8至图10示出了本申请又一实施例的电池模组的结构。本实施例与前述实施例的不同之处在于其导热采样件7和导热连接片8的结构不同。以下就本实施例与前述实施例的不同之处进行描述。
如图8至图10所示，本实施例中，导热采样件7包括采样板。采样板包括顺次连接的第一采样板71、第二采样板72和第三采样板73。第一采样板71和第三采样板73均朝向远离第二采样板72的板面的一侧延伸。第一采样板71和第三采样板73延伸方向相反。第一采样板71与温度采样区1021 贴合。第三采样板73与导热连接片8贴合。
本实施例的导热采样件7可以通过适当调节第一采样板71、第二采样板72和第三采样板73之间的角度，调节第一采样板71和第三采样板73之间的相对位置，从而较好地适应导热连接片8与电池顶盖102之间的相对位置，利于采样导热件7与导热连接片8与电池顶盖102均紧密地贴合，从而利于保证测温效果，也利于减少导热连接片8施加于电路板4上的应力。
在一些未图示的实施例中，第一采样板和第三采样板的延伸方向可以相同。
如图8和图10所示，导热连接片8为平板形连接片。导热采样件7的第三采样板73与导热连接片8固定连接。
如图8至图10所示，导热采样件7包括设置于第三采样板73边缘的可弯折的采样件耳板74。通过将采样件耳板74弯折至与导热连接片8的板面贴合以连接第三采样板73与导热连接片8。
本实施例中，在第三采样板73的相对的两侧各自设置一个采样件耳板74，采样件耳板74弯折后位于导热连接片8的上方，第三采样板73位于导热连接片8的下方。
本实施例中，采样件耳板74作为采样件压接板设置于采样板上，通过将采样件压接板弯折至与导热连接片贴合以连接导热采样件与导热连接片。在未图示的实施例中，导热连接片可以包括导热连接片主体和设置于导热连接片主体的可弯折的连接片压接板，通过将连接片压接板弯折至与导热采样件贴合以连接导热采样件与导热连接片。例如，可以在导热连接片上设置连接片耳板作为连接片压接板。导热连接片包括导热连接片主体和设置于导热连接片主体边缘的可弯折的连接片耳板，通过将连接片耳板弯折至与导热采样件的板面贴合以连接与导热连接片。
在一些未图示的实施例中，也可以在导热连接片上设置连接片耳板，同时在导热采样件上设置采样件耳板。
在一些未图示的实施例中，采样件耳板的位置不限于设置于对应的采样板的边缘，也可以设置于对应的采样板的中部，相应地，在导热连接片上可以开设插孔供采样件耳板插入，以连接导热采样件与导热连接片。在导热接片主体上设置连接片耳板时，也可以将连接片耳板设置于导热连接片的中部，而在导热采样件上开设插孔供连接片耳板插入，以连接导热采样件与导热连接片。
本实施例中未描述的内容可以参考本申请其余部分的相关描述。
图11至图14示出了本申请又一实施例的电池模组的结构。本实施例与前述实施例的不同之处在于其导热采样件9和导热连接片10的结构不同。以下就本实施例与前述实施例的不同之处进行描述。
如图11至图14所示，本实施例中，导热采样件9包括采样板。采样板包括顺次连接的第一采样板91、第二采样板92和第三采样板93。第一采样板91和第三采样板93均朝向远离第二采样板92的板面的一侧延伸。第一采样板91和第三采样板93延伸方向相反。第一采样板91与温度采样区1021贴合。第三采样板93与导热连接片10贴合。
如图12所示，第三采样板93上设有第一连接孔931。如图13所示，导热连接片10为平板形连接片；导热连接片10上设有第二连接孔1011。
如图11和图14所示，第三采样板94与导热连接片10通过穿过第一连接孔931和第二连接孔1011的铆钉12连接。
本实施例中未描述的内容可以参考本申请其余部分的相关描述。
图15至图18示出了本申请又一实施例的电池模组的结构。本实施例与前述实施例的不同之处在于导热采样件13和导热连接片14的结构不同。 以下就本实施例与前述实施例的不同之处进行描述。
如图15、图16和图18所示，本实施例中，导热采样件13包括采样板。采样板包括顺次连接的第一采样板131、第二采样板132和第三采样板133。第一采样板131和第三采样板133均朝向远离第二采样板132的板面的一侧延伸。第一采样板131和第三采样板133延伸方向相反。第一采样板131与温度采样区1021贴合。第三采样板133与导热连接片14贴合。
如图16所示，第三采样板133上设有第三连接孔1331。如图17所示，导热连接片14为平板形连接片；导热连接片14上设有第四连接孔141。
如图15和图18所示，第三采样板133与导热连接片14通过穿过第四连接孔141与第三连接孔1331螺纹配合的螺钉15连接。第四连接孔141可以为与螺钉15配合的螺纹孔，第四连接孔141也可以为光孔。第四连接孔141为光孔时，可以采用自攻螺钉实现第三采样板133与导热连接片14的连接，也可以采用螺钉与螺母的配合实现第三采样板13与导热连接片14的连接。
在螺钉15与导热采样件13直接螺纹配合时，为了使螺钉15与导热采样件13更稳定的连接，如图16所示，在第三采样板133的与第三连接孔1331对应的位置设置有向下凸出于第三采样板133的下表面的环形凸起，以使螺钉15亦与该环形凸起螺纹配合，以与导热采样件13增加连接长度。
本实施例中未描述的内容可以参考本申请其余部分的相关描述。
图19至图22示出了本申请又一实施例的电池模组的结构。本实施例与前述实施例的不同之处在于其导热采样件16和导热连接片17的结构不同。以下就本实施例与前述实施例的不同之处进行描述。如图19、图20和图22所示，本实施例中，导热采样件16包括采样板。采样板包括顺次连接的第一采样板161、第二采样板162和第三采样板163。第一采样板161和第三采样板163均朝向远离第二采样板162的板面的一侧延伸。第一采样板161 和第三采样板163延伸方向相反。第一采样板161与温度采样区1021贴合。第三采样板163与导热连接片17贴合。
如图20所示，第三采样板163上设有从第三采样板163的板面向远离该板面一侧延伸的可弯折的采样件凸环1631。如图21所示，导热连接片17为平板形连接片；导热连接片17上设有供采样件凸环1631穿入的采样件凸环穿孔171。通过将采样件凸环1631穿入采样件凸环穿孔171后并弯折至与采样板导热连接片17的板面贴合以连接导热连接片17与第三采样板163。
本实施例中，采样件凸环1631为扁筒状采样件凸环，当导热连接片17与第三采样板163贴合后，需使用工具将扁筒状采样件凸环向径向外侧翻卷成卷边结构，使第三采样板163与导热连接片17贴合并固定连接在一起。
本实施例中，采样件凸环1631作为采样件压接板的一种实现形式，设置于采样板上，通过将采样件凸环1631弯折至与导热连接片贴合以连接导热采样件与导热连接片。
在一些未图示的实施例中，导热连接片可以包括连接片凸环。导热连接片设有连接片主体和设置于连接片主体上的从连接片主体的板面向远离该板面一侧延伸的可弯折的连接片凸环，导热采样件上设有供连接片凸环穿入的采样件凸环穿孔，通过将连接片凸环穿入采样件凸环穿孔后并弯折至与导热采样件贴合以连接导热连接片与导热采样件。
在该未图示的实施例中，连接片凸环作为连接片压接板的一种实现形式，设置于连接片主体上，通过将连接片凸环弯折至与导热采样件贴合以连接导热采样件与导热连接片。
在一些未图示的实施例中，在导热采样件上设置采样件凸环的同时，可以在导热连接片主体上设置连接片凸环。
本实施例中未描述的内容可以参考本申请其余部分的相关描述。
本申请不限于以上实施例。例如，在以上各实施例中涉及平板形连接片的，在一些未图示的实施例中，根据实际需要，导热连接片也可以采用弯折形连接片。再例如，在上述各实施例中，涉及第三采样板的，第三采样板均位于导热连接片下方，在一些未图示的实施例中，第三采样板也可以位于导热连接片的上方。又例如，以上各实施例中涉及第三采样板与导热连接片连接的，其各种连接形式均可用于其它形状的采样板与导热连接片之间连接。
最后应当说明的是：以上实施例仅用以说明本申请的技术方案而非对其限制；尽管参照较佳实施例对本申请进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本申请的具体实施方式进行修改或者对部分技术特征进行等同替换，其均应涵盖在本申请请求保护的技术方案范围当中。

Claims (14)

  1. 一种电池模组，包括：
    多个电池单体，所述电池单体包括电池顶盖；
    导热采样件，与所述电池顶盖贴合；
    导热连接片，所述导热连接片的一端与所述导热采样件贴合；
    电路板，设置于所述电池顶盖上方，所述导热连接片的另一端连接于所述电路板；和
    测温元件，电连接于所述电路板，所述测温元件被配置为采集所述导热连接片的温度信号并传递至所述电路板。
  2. 根据权利要求1所述的电池模组，其中，所述导热采样件包括采样块，所述采样块的底部与所述电池顶盖贴合，所述采样块的顶部与所述导热连接片贴合。
  3. 根据权利要求1或2所述的电池模组，其中，所述导热采样件包括采样板，所述采样板与所述导热连接片固定连接。
  4. 根据权利要求3所述的电池模组，其中，所述采样板包括与所述电池顶盖贴合的第一采样板、与所述导热连接片贴合的第三采样板以及连接第一采样板和第三采样板的第二采样板。
  5. 根据权利要求4所述的电池模组，其中，所述采样板呈弯折状，所述第一采样板和所述第三采样板分别位于所述第二采样板的两侧，并朝向远离所述第二采样板的方向延伸。
  6. 根据权利要求3-5中任意一项所述的电池模组，其中，
    所述导热采样件包括设置于所述采样板的可弯折的采样件压接板，通过将所述采样件压接板弯折至与导热连接片贴合以连接所述导热采样件与所述导热连接片；和/或，
    所述导热连接片包括导热连接片主体和设置于所述导热连接片主体的可弯折的连接片压接板，通过将所述连接片压接板弯折至与导热采样件贴合以 连接所述导热采样件与所述导热连接片。
  7. 根据权利要求6所述的电池模组，其中，
    所述采样件压接板包括设置于所述采样板的可弯折的采样件耳板；和/或，
    所述连接片压接板包括设置于所述导热连接片主体的连接片耳板。
  8. 根据权利要求6或7所述的电池模组，其中，
    所述采样件压接板包括从所述采样板的板面向远离该板面一侧延伸的可弯折的采样件凸环，所述导热连接片上设有供所述采样件凸环穿入的采样件凸环穿孔，通过将所述采样件凸环穿入所述采样件凸环穿孔后并弯折至与所述导热连接片贴合以连接所述导热连接片与所述导热采样件；和/或，
    所述连接片压接板包括从所述连接片主体的板面向远离该板面一侧延伸的可弯折的连接片凸环，所述采样板上设有供所述连接片凸环穿入的连接片凸环穿孔，通过将所述连接片凸环穿入所述连接片凸环穿孔后并弯折至与所述导热采样件贴合以连接所述导热连接片与所述导热采样件。
  9. 根据权利要求3-8中任意一项所述的电池模组，其中，所述采样板与所述导热连接片通过紧固件和/或粘合剂连接。
  10. 根据权利要求1-9中任意一项所述的电池模组，其中，所述导热连接片为平板状连接片或弯折状连接片。
  11. 根据权利要求1-10中任意一项所述的电池模组，其中，所述导热采样件包括底座和设置于底座上的插口，所述底座与所述电池顶盖贴合，所述导热连接片与所述插口插接并与所述插口的侧壁贴合。
  12. 根据权利要求11所述的电池模组，其中，所述导热采样件由一块条形板弯折形成。
  13. 根据权利要求11或12所述的电池模组，其中，所述导热连接片为弯折状连接片，且包括第一连接部和与所述第一连接部形成夹角的第二连接部，所述第一连接部与所述插口插接，所述第二连接部连接于所述电路板。
  14. 一种车辆，包括：
    动力源，所述动力源为所述车辆提供动力；
    以及如权利要求1-13中任意一项所述的电池模组，所述电池模组被配置为向所述动力源供电。
PCT/CN2020/118764 2019-11-19 2020-09-29 电池模组和车辆 WO2021098387A1 (zh)

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