WO2021259293A1 - Module de batterie, batterie d'alimentation, et véhicule électrique - Google Patents

Module de batterie, batterie d'alimentation, et véhicule électrique Download PDF

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Publication number
WO2021259293A1
WO2021259293A1 PCT/CN2021/101656 CN2021101656W WO2021259293A1 WO 2021259293 A1 WO2021259293 A1 WO 2021259293A1 CN 2021101656 W CN2021101656 W CN 2021101656W WO 2021259293 A1 WO2021259293 A1 WO 2021259293A1
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WO
WIPO (PCT)
Prior art keywords
battery pack
circuit board
flexible circuit
battery
battery module
Prior art date
Application number
PCT/CN2021/101656
Other languages
English (en)
Chinese (zh)
Inventor
冯俊敏
张万财
吴婷婷
Original Assignee
厦门海辰新能源科技有限公司
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 厦门海辰新能源科技有限公司 filed Critical 厦门海辰新能源科技有限公司
Publication of WO2021259293A1 publication Critical patent/WO2021259293A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • This application relates to the technical field of vehicles, and in particular to a battery module, a power battery, and an electric vehicle.
  • Lithium-ion batteries In the development of electric vehicles, the production and safe use of power batteries are an important part of their development. At present and in the future, lithium-ion power batteries will be the mainstream power supply system for electric vehicles. Lithium-ion batteries have the advantages of high energy density and long life, but they also have certain hidden dangers if they are used improperly.
  • the lithium batteries When lithium batteries are used in electric vehicles, the lithium batteries may be subjected to continuous vibration, temperature changes, rain immersion, etc. during the driving process of the electric vehicle. Under the action of external force, the cover of the lithium battery may be deformed, causing the structure in the cover to be damaged by excessive pressure.
  • the application discloses a battery module, a power battery and an electric vehicle, which are convenient for protecting the internal structure of the battery module.
  • a battery module including:
  • a battery pack which includes a plurality of single cells arranged side by side;
  • a flexible circuit board is arranged on the top of the battery pack, and the flexible circuit board is electrically connected to the single cell through a metal sheet;
  • a support the support is arranged on the top of the battery pack, the support is located on the side of the flexible circuit board and/or the metal sheet away from the battery pack, and the support is connected to the There is a certain distance between the flexible circuit board and/or the metal sheet.
  • the support includes:
  • a first elongated portion the first elongated portion extending along the length direction of the battery pack and located on the first side of the top of the battery pack;
  • a second elongated portion the second elongated portion extending along the length direction of the battery pack and located on a second side of the top of the battery pack opposite to the first side;
  • a connecting portion extends along the width direction of the battery pack, and both ends of the connecting portion are respectively connected to the first elongated portion and the second elongated portion.
  • an explosion-proof valve area is provided on the single cell, and the explosion-proof valve area Located at the bottom of the gap.
  • the connecting portion includes two connecting blocks, and the two connecting blocks are respectively connected to the first elongated portion and the second elongated portion.
  • the connecting block is integrally formed with the first elongated portion and the second elongated portion.
  • the battery module further includes a buffer portion, and the buffer portion is disposed on a side of the support member facing away from the battery pack.
  • the buffer portion includes a plurality of EV foams, the plurality of EV foams are arranged at intervals along the length direction of the support, and each of the EV foams Both ends of are respectively connected to the first elongated portion and the second elongated portion.
  • the support includes an EPP foam board.
  • the battery pack further includes a conductive connector, and the positive and negative electrodes of two adjacent single cells are connected by the conductive connector, and the metal sheet The two ends are respectively connected to the conductive connector and the flexible circuit board.
  • the conductive connecting member is provided on the top of the battery pack, and the conductive connecting member is provided with a convex portion, and the convex portion is opposite to the battery pack.
  • the height is higher than the height of the flexible circuit board and the metal sheet relative to the battery pack, and the supporting member is laid on the top of the convex portion.
  • an explosion-proof valve area is provided on the single battery
  • the flexible circuit board extends along the length of the battery pack and is located on the explosion-proof valve area
  • the flexible circuit board is provided with an avoiding through hole for avoiding the explosion-proof valve area
  • the conductive connecting member and the metal sheet are both located on the outer side of the flexible circuit board.
  • the battery module further includes a fixing ring, and the fixing ring is fixedly arranged around the outer periphery of the battery pack.
  • the fixing rings are arranged at intervals along the height direction of the battery pack. .
  • the present application also discloses a power battery, the power battery includes at least one battery module, and the battery module is the above-mentioned battery module.
  • the application also discloses an electric vehicle, which includes the above-mentioned power battery.
  • the top support of the battery pack in this application is provided with a support, and there is a certain distance between the support and the flexible circuit board and/or the metal sheet, when the top of the battery module is subjected to an external force, the support may take precedence over
  • the flexible circuit board and/or the metal sheet is in contact with the structure for applying external force, even if the support is deformed by the external force, it is not easy to contact the flexible circuit board and/or the metal sheet, that is, the support can be
  • the flexible circuit board and/or the metal sheet are protected to prevent the flexible circuit board and/or the metal sheet from being damaged by external forces.
  • FIG. 1 is a schematic diagram of the structure of the power battery disclosed in the present application.
  • FIG. 2 is a schematic diagram of the structure of the battery module disclosed in the present application.
  • FIG. 3 is an exploded view of the battery module disclosed in the present application.
  • FIG. 4 is an enlarged view of the M area in FIG. 3;
  • FIG. 5 is a top view of the battery module disclosed in the present application.
  • Fig. 6 is a schematic structural diagram of the support part disclosed in the present application from a first perspective
  • FIG. 7 is a schematic structural diagram of the support part disclosed in the present application from a second perspective
  • Fig. 8 is a front view of the electric vehicle disclosed in the present application.
  • Icon 100, battery module; 110, battery pack; 111, single cell; 1111, explosion-proof valve area; 120, flexible circuit board; 121, avoidance through hole; 130, support member; 131, first strip part; 132 , Second long section; 133, connecting section; 1331, first connecting block; 1332, second connecting block; 1301, gap; 1302, positioning groove; 140, metal sheet; 150, buffer section; 151, EV foam Cotton; 160, conductive connector; 161, convex part; 170, fixed ring; 200, power battery; 210, shell; 300, electric car; 310, body.
  • the terms “installed”, “set”, “provided”, “connected”, and “connected” should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediary, or between two devices, elements, or components. Connectivity within the room.
  • installed can be a fixed connection, a detachable connection, or an integral structure
  • it can be a mechanical connection or an electrical connection
  • it can be directly connected, or indirectly connected through an intermediary, or between two devices, elements, or components. Connectivity within the room.
  • the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.
  • first means two or more.
  • FIG. 1 is a schematic diagram of the structure of the power battery disclosed in the present application
  • FIG. 2 is a schematic diagram of the structure of the battery module disclosed in the present application
  • FIG. 3 is an exploded view of the battery module disclosed in the present application
  • Fig. 4 is an enlarged view of the M area in Fig. 3.
  • the power battery 200 in the present application includes a cover (not shown in the figure), a casing 210 and at least one battery module 100.
  • FIG. 1 shows a case where there are multiple battery modules 100, and the above-mentioned multiple battery modules 100 are installed in the casing 210 side by side.
  • the cover is set on the housing 210.
  • the power battery 200 will be subjected to external force during use, which is specifically embodied in that the cover body is deformed by the downward pressing force.
  • the battery module 100 will be subjected to external force, resulting in the internal structure of the battery module 100.
  • the flexible circuit board 120 and the metal sheet 140 are damaged.
  • the structure of the battery module 100 is innovatively improved in the present application.
  • the battery module 100 in the present application includes a battery pack 110, a flexible circuit board 120, and a support 130.
  • the battery pack 110 includes a plurality of single cells 111 arranged side by side; the flexible circuit board 120 is arranged on the top of the battery pack 110, and the flexible circuit board 120 is electrically connected to the single cells 111 through a metal sheet 140; the support 130 is arranged on the battery pack 110 At the top, the support 130 is located on the side of the flexible circuit board 120 and/or the metal sheet 140 away from the battery pack 110, and there is a certain distance between the support 130 and the flexible circuit board 120 and/or the metal sheet 140.
  • a certain distance between the support 130 and the flexible circuit board 120 and/or the metal sheet 140 means that the support 130 and the flexible circuit board 120 have a certain distance, or the support 130 and the metal sheet 140 have a certain distance. A certain distance, or a certain distance between the support 130, the flexible circuit board 120 and the metal sheet 140.
  • the top support of the battery pack 110 in the present application is provided with a support 130, and there is a certain distance between the support 130 and the flexible circuit board 120 and/or the metal sheet 140, when the cover of the power battery 200 is subjected to external force , The top of the battery module 100 will also be subjected to a corresponding external force.
  • the support 130 may have priority over the flexible circuit board 120 and/or the metal sheet 140 to contact the structure applying the external force, even if the support 130 is deformed by the external force , It is not easy to contact the flexible circuit board 120 and/or the metal sheet 140, that is, the support 130 can protect the flexible circuit board 120 and/or the metal sheet 140, and avoid the flexible circuit board 120 and/or the metal sheet 140.
  • the sheet 140 is damaged by external force.
  • the support 130 is arranged on the top of the battery pack 110 and is located on the side of the flexible circuit board 120 and the metal sheet 140 away from the battery pack 110.
  • the support 130 can specifically pass through a support column. It is supported on the top of the battery pack 110 and fixed on the battery pack 110 by means of screws, pins, rivets or welding. After the support 130 is installed, there is a certain distance between the support 130 and the flexible circuit board 120 and the metal sheet 140, which is convenient for protecting the flexible circuit board 120 and the metal sheet 140 at the same time.
  • the supporting member 130 may also only have a certain distance from one of the flexible circuit board 120 and the metal sheet 140. In this way, the support member 130 can also be used to protect the flexible circuit board 120 and the metal sheet to a certain extent. One of the sheets 140 protects.
  • the support 130 includes a first elongated portion 131, a second elongated portion 132, and a connecting portion 133, wherein the first elongated portion 131 extends along the length direction of the battery pack 110 and is located on the first side of the top of the battery pack 110;
  • the second elongated portion 132 extends along the length direction of the battery pack 110 and is located on the top of the battery pack 110 on the second side opposite to the first side;
  • the connecting portion 133 extends along the width direction of the battery pack 110, and two sides of the connecting portion 133
  • the ends are connected to the first elongated portion 131 and the second elongated portion 132 respectively.
  • the supporting member 130 is generally arranged in a plate shape to cover the top of the battery pack 110, which facilitates all-round protection
  • the connecting part 133 in the present application includes two connecting blocks.
  • the above two connecting blocks are respectively identified as the first connecting block 1331 and the second connecting block 1332.
  • the two connecting blocks are connected The blocks are respectively connected to the corresponding two ends of the first elongated portion 131 and the second elongated portion 132.
  • one end of the first connecting block 1331 is connected to the first end of the first elongated portion 131
  • the other end is connected to the first end of the second elongated portion 132
  • one end of the second connecting block 1332 is connected to the first end of the first elongated portion 132.
  • the second end of the portion 131 is connected, and the other end is connected to the second end of the second elongated portion 132.
  • the first end of the first long portion 131 corresponds to the first end of the second long portion 132
  • the second end of the second long portion 132 corresponds to the second end of the second long portion 132
  • the first connecting block 1331 and the second connecting block 1332 are integrally formed with the first elongated portion 131 and the second elongated portion 132, which can further improve the structural stability of the support 130 in the present application.
  • first connecting block 1331 and the second connecting block 1332 and the first elongated portion 131 and the second elongated portion 132 may also be separately provided, and then used by buckles, screws, and pins. And other structures are connected together.
  • an explosion-proof valve area 1111 is provided on the top of the single cell 111 of the present application.
  • the explosion-proof valve area 1111 is used to discharge the gas generated inside the single cell 111.
  • this There is a gap 1301 between the second elongated portion 132 and the first elongated portion 131 in the application.
  • the explosion-proof valve area 1111 is located at the bottom of the gap 1301. This arrangement makes the gas generated inside the single cell 111 It can be discharged from the explosion-proof valve area 1111 and then discharged from the gap 1301, and the support 130 will not hinder the discharge of gas.
  • the support 130 is an EPP (polypropylene foamed material) foam board, which is a low-density, high-strength hard material.
  • EPP foam board has the advantages of light weight and not easy to deform, can effectively protect the flexible circuit board 120 and the metal sheet 140, and is convenient for transportation.
  • the support 130 may also be a hard metal material, such as iron, alloy, etc., as long as it is other deformation methods under the concept of the present application, they are all within the scope of protection of the present application.
  • the battery module 100 in the present application further includes a buffer portion 150, which is arranged on the side of the support 130 away from the battery pack 110, by providing a buffer on the side of the support 130 away from the battery pack 110
  • the part 150 can play a role of buffering and sound absorption, and can reduce the impact sound of the battery module 100 during use.
  • the buffer portion 150 includes a plurality of EV (ethylene-vinyl acetate copolymer foam) foams 151, the plurality of EV foams 151 are arranged at intervals along the length direction of the support 130, and each EV Two ends of the foam 151 are respectively connected to the first long portion 131 and the second long portion 132. Since the EV foam 151 is easily deformed, it can play a role in cushioning and sound absorption, avoiding impact sound.
  • EV foam 151 ethylene-vinyl acetate copolymer foam
  • the three EV foams 151 are arranged at intervals along the length of the support 130 and are connected between the first elongated portion 131 and the second elongated portion 132. To improve the strength of the support 130 to a certain extent, it can also have a good cushioning and sound absorption effect.
  • the EV foam 151 can be fixedly connected to the first elongated portion 131 and the second elongated portion 132 by means of bonding, clamping, etc., with a simple structure and good stability.
  • the buffer portion 150 may also be a structure such as a foam board, a flexible plastic board, etc., as long as it is other deformation methods under the concept of the present application, they are all within the protection scope of the present application.
  • FIG. 7 is a schematic structural diagram of the support part disclosed in the present application from a second perspective.
  • the battery pack 110 in the present application further includes a conductive connector 160.
  • the positive and negative electrodes of two adjacent single cells 111 are connected by the conductive connector 160.
  • the two ends of the metal sheet 140 are respectively connected to the conductive connector 160 and the flexible circuit.
  • the board 120 can further electrically connect the single battery 111 and the flexible circuit board 120 together.
  • the metal sheet 140 in the present application is a nickel sheet, a copper sheet, or the like.
  • the support 130 Since the support 130 is a long strip structure, it is mainly fixed by the two ends of the support 130. When the middle position of the support 130 is subjected to a large external force, the middle position of the support 130 is likely to be pressed down, and the flexible circuit The plate 120 and the metal sheet 140 cause damage.
  • the conductive connecting member 160 in the present application is provided on the top of the battery pack 110, and the conductive connecting member 160 is provided with a convex portion 161.
  • the height of the convex portion 161 relative to the battery pack 110 is higher than
  • the height of the flexible circuit board 120 and the metal sheet 140 relative to the battery pack 110 is when the support 130 is placed on the top of the convex portion 161.
  • the convex portion 161 can support the supporting member 130. After installation, there is a certain distance between the supporting member 130 and the flexible circuit board 120 and the metal sheet 140. When the battery module 100 is subjected to an external force, the support 130 can protect the flexible circuit board 120 and the metal sheet 140.
  • the convex portion 161 is disposed at the middle position of the conductive connecting member 160, that is, above the junction of two adjacent single cells 111.
  • This structure enables the support 130 to have multiple support points, which improves the ability of the support 130 to withstand external forces. Since the conductive connecting members 160 are arranged at intervals, the supporting member 130 is evenly supported after being laid on the conductive connecting member 160, which helps to improve the ability of the supporting member 130 to withstand external forces.
  • the side of the support 130 in the present application close to the convex portion 161 is provided as a positioning groove 1302.
  • the support 130 When the support 130 is installed on the battery pack 110, the support 130 The upper positioning groove 1302 fits exactly at the convex portion 161 to facilitate the positioning of the support 130 and further facilitate the support and installation of the support 130 on the battery pack 110.
  • the conductive connecting member 160 in the present application is a conductive sheet
  • the conductive sheet may be, for example, a conductive structure such as a copper sheet, a nickel sheet, or the like.
  • the flexible circuit board 120 in the present application extends along the length of the battery pack 110 and is located on the explosion-proof valve area 1111.
  • the flexible circuit board 120 is provided with an avoidance through hole 121 that avoids the explosion-proof valve area 1111, and a conductive connector 160 and the metal sheet 140 are located on the outside of the flexible circuit board 120, that is to say, the flexible circuit board 120, the conductive connector 160 and the metal sheet 140 are laid on the top of the battery pack 110 in a sheet shape, which can reduce the battery to a certain extent.
  • the height of the module 100 facilitates the miniaturization of the battery module 100.
  • the multiple metal sheets 140 may be located on the same side of the flexible circuit board 120, or may be located on both sides of the flexible circuit board 120, respectively.
  • the battery pack 110 in the present application includes a plurality of single cells 111, and the single cells 111 may be two, three, or more than three.
  • FIG. 1 in the present application shows that the battery pack 110 has six cells.
  • the single cells 111 in the present application may be arranged in a cylindrical shape, may also be arranged in a prismatic shape, or may be arranged in other special-shaped columnar structures.
  • Figure 1 in this application shows the case where the single cells 111 are arranged in a rectangular parallelepiped. In actual arrangement, the single cells 111 are arranged in sequence along the width direction of the single cells 111 to form a battery pack 110. The structure is neat and easy to realize the battery module. Miniaturized design of group 100.
  • the metal sheet 140 is disposed between the conductive connection member 160 and the flexible circuit board 120, when one side of the support member 130 is laid on the convex portion 161 of the conductive connection member 160, the remaining part of the support member 130 is suspended.
  • the supporting member 130 is subjected to a large external force, the side of the supporting member 130 close to the flexible circuit board 120 may be pressed down, and the supporting member 130 may be pressed down to the flexible circuit board 120. This causes damage to the flexible circuit board 120.
  • the thickness of the supporting member 130 gradually decreases from the side close to the conductive connection member 160 to the side close to the flexible circuit board 120.
  • the side of the supporting member 130 close to the conductive connecting member 160 (that is, the thicker side) is first subjected to the external force, which reduces the probability of the supporting member 130 and strengthens the supporting member 130 Protection of the flexible circuit board 120 and the metal sheet 140.
  • the side of the support 130 close to the flexible circuit board 120 is pressed down by an external force, since the thickness of the flexible circuit board 120 of this part is reduced, the distance between it and the flexible circuit board 120 is increased, which can reduce the support.
  • the probability of the side of 130 close to the flexible circuit board 120 being subjected to an external force.
  • the battery module 100 in the present application further includes a fixing ring 170, which is fixedly arranged around the outer periphery of the battery pack 110, so that it is convenient to fasten the multiple cells 111 of the battery pack 110 together, and can improve The structural stability of the battery module 100 in this application is convenient for installation and transportation.
  • fixing rings 170 there may be one or more fixing rings 170.
  • the fixing rings 170 are arranged at intervals along the height direction of the battery pack 110.
  • FIG. 3 in the present application shows a situation where there are two fixing rings 170, and the battery pack 110 is fixed from the top and bottom ends of the battery pack 110 respectively, and the structure is stable and reliable.
  • the battery module 100 provided by the present application is provided with a support 130 on the top of the flexible circuit board 120 and the metal sheet 140 to improve the protection of the flexible circuit board 120 and the metal sheet 140 and avoid damage to them under external force. , Can extend the life of the battery.
  • the buffer 150 is provided on the top of the support 130 to play a role of buffering and sound absorption, and to a large extent avoid the impact sound of the power battery during use.
  • the present application also provides an electric vehicle 300, which includes a vehicle body 310 and a power battery 200 arranged at the bottom of the vehicle body 310.
  • the power battery 200 is the power battery 200 in the first embodiment. It is understandable that the electric vehicle 300 in the present application has the power battery 200 described above. Therefore, the electric vehicle 300 in the present application has all the technical effects of the power battery 200 described above. The technical effects of the are fully explained, so I won’t repeat them here.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne un module de batterie (100), une batterie d'alimentation (200) et un véhicule électrique (300). Le module de batterie (100) comprend un bloc-batterie (110), une carte de circuit imprimé souple (120), et un élément de support (130). Le bloc-batterie (110) comprend de multiples blocs de batteries uniques (111) disposés côte à côte. La carte de circuit imprimé souple (120) est disposée au niveau de la partie supérieure du bloc-batterie (110) et est électriquement connectée aux batteries uniques (111) au moyen d'une feuille métallique (140). L'élément de support (130) est disposé au niveau de la partie supérieure du bloc-batterie (110), est situé sur un côté de la carte de circuit imprimé souple (120) et/ou sur le côté de la feuille métallique (140) à l'opposé du bloc-batterie (110), et une certaine distance existe entre l'élément de support (130) et la carte de circuit souple (120) et/ou la feuille métallique (140).
PCT/CN2021/101656 2020-06-23 2021-06-22 Module de batterie, batterie d'alimentation, et véhicule électrique WO2021259293A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021210712.3U CN212517365U (zh) 2020-06-23 2020-06-23 电池模组和电池
CN202021210712.3 2020-06-23

Publications (1)

Publication Number Publication Date
WO2021259293A1 true WO2021259293A1 (fr) 2021-12-30

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CN212517365U (zh) * 2020-06-23 2021-02-09 厦门海辰新能源科技有限公司 电池模组和电池
CN115295951A (zh) * 2022-08-25 2022-11-04 中国第一汽车股份有限公司 一种ctc动力电池系统、电池包及电动车辆

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