CN211404561U

CN211404561U - Battery module, power battery package and vehicle

Info

Publication number: CN211404561U
Application number: CN201922140142.9U
Authority: CN
Inventors: 廖宝文; 王军; 刘丽荣
Original assignee: Farasis Energy Ganzhou Co Ltd; Farasis Energy Zhenjiang Co Ltd
Current assignee: Farasis Energy Ganzhou Co Ltd; Farasis Energy Zhenjiang Co Ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-09-01
Anticipated expiration: 2029-12-03

Abstract

The utility model relates to an electric automobile technical field specifically relates to a battery module, power battery package and vehicle. The battery module comprises a connector, a shell, a body and a printed circuit board, wherein the body and the printed circuit board are packaged in the shell, the printed circuit board comprises a rigid circuit board and a flexible circuit board, the body is electrically connected with the flexible circuit board through the rigid circuit board, the shell is provided with an opening, the connector is installed in the opening and is electrically connected with the flexible circuit board, and the connector comprises an output side arranged towards the outer side of the shell. This battery module is through encapsulating printed circuit board in the casing to and install the connector at the opening part of casing, reduced the connector and received external impact's probability, the connector can also will receive the vibration impact and pass through flexible circuit board transmission for rigid circuit board in addition, makes flexible circuit board can absorb some impact, has reduced the impulsive force effect that rigid circuit board received, has prolonged rigid circuit board's life.

Description

Battery module, power battery package and vehicle

Technical Field

The utility model relates to an electric automobile technical field specifically relates to a battery module, power battery package and vehicle.

Background

At present, a power battery pack usually adopts a rigid Printed Circuit Board (PCB) to perform low-voltage sampling on a cell unit in a battery module, specifically, the battery module further comprises a shell, the cell unit installed in the shell and a connector installed outside the shell, an opening is formed at the top of a module end plate of the shell, a plastic part is installed on an outer plate surface of the module end plate and comprises a protective groove communicated with the opening of the module end plate, the rigid PCB is installed above the cell unit and is electrically connected with the cell unit through a nickel sheet, the rigid PCB is horizontally arranged, one end of the rigid PCB penetrates through the opening of the module end plate and penetrates through the protective groove of the plastic part to extend out of the shell of the battery module, a conductive column of the connector vertically extends upwards and sequentially penetrates through the lower side wall of the protective groove of the plastic part, and the rigid PCB is welded on the top wall of a mounting groove of the, so that the connector is electrically connected with the rigid PCB, and various information of the battery cell unit is conveniently transmitted out through the connector after being collected by the rigid PCB.

However, foretell battery module sets up plastic part and connector outside the casing, the too much installation space between the casing of having occupied power battery package and the casing of battery module, still lead to the connector can't receive the guard action that the casing of battery module played, easily directly receive external impact, and the part of rigid PCB board stretching outside the casing is connected with the connector, when the connector receives the vibration impact, most impact can pass through the plastic column through the conductive pillar transmission of connector and transmit the casing of battery module, and the intensity of casing is higher, cause the plastic part that intensity is weakest to damage easily, even fracture, the part that has caused the rigid PCB board to be located the protecting trough is easily damaged, the security performance is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the power battery package that prior art exists and leading to occuping the problem of too much installation space between the casing of power battery package and the casing of battery module because of setting up plastic part and connector outside the casing of battery module, a battery module is provided, power battery package and vehicle, this battery module is through encapsulating printed circuit board in the casing, and install the opening part at the casing with the connector, the problem of having solved the connector setting and leading to occuping too much installation space between the casing of power battery package and the casing of battery module outside the casing of battery module, it is more reasonable to design.

In order to achieve the above object, an aspect of the present invention provides a battery module, the battery module includes connector, casing and encapsulate in body and printed circuit board in the casing, printed circuit board includes rigid circuit board and flexible circuit board, the body passes through rigid circuit board with the flexible circuit board electricity is connected, the casing is provided with the opening, the connector install in the opening and with the flexible circuit board electricity is connected, the connector includes the orientation the output side that the outside of casing set up.

Alternatively, the end surface on the output side is disposed inside an outer end surface extending outward of the opening.

Optionally, the connector includes an insulating fixing block and a plurality of conductive rods, the insulating fixing block is mounted to the opening and includes a plurality of mounting holes respectively corresponding to the plurality of conductive rods, one end of each conductive rod is flush with an outer side surface of the insulating fixing block to form the output side, and the other end of each conductive rod passes through the mounting hole and extends into the housing to be electrically connected to the flexible circuit board.

Optionally, the battery module includes a mounting plate mounted on the housing, the flexible circuit board is inserted into a gap formed between the mounting plate and the housing, and the other ends of the plurality of conductive rods respectively penetrate through the plurality of openings of the flexible circuit board and are mounted on the mounting plate.

Optionally, one of the outer periphery of the insulating fixed block and the circumferential hole wall of the opening is provided with a groove structure, and the other is provided with a protrusion structure adapted to the groove structure.

Optionally, the housing includes a modular end plate and a mounting member, the mounting member being assembled with the mounting plate and having the opening, the modular end plate having a top slot to mount the mounting member.

Optionally, one of the top slotted inner side wall of the module end plate and the outer side wall of the mounting member is provided with the sliding groove, and the other is provided with a mounting protrusion adapted to the sliding groove.

Optionally, the flexible circuit board is provided with a bending portion capable of deforming under the action of an external force.

The utility model discloses another aspect provides a power battery package, power battery package includes the battery module.

The utility model discloses another aspect provides a vehicle, the vehicle includes power battery package.

Through the technical scheme, the utility model provides a battery module, power battery package and vehicle, this battery module is through encapsulating printed circuit board in the casing, and install the connector at the opening part of casing, the problem of setting up the connector outside the casing of battery module and leading to occuping the too much installation space between the casing of power battery package and the casing of battery module has been solved, it is more reasonable to design, the probability that the connector received external impact has been reduced, and the connector can also transmit the vibration impact for rigid circuit board through flexible circuit board, make flexible circuit board can absorb some impact, the impulsive force effect that rigid circuit board received has been reduced, the life of rigid circuit board has been prolonged, and the security performance is better.

Drawings

Fig. 1 is a schematic structural diagram of a battery module according to the present invention;

fig. 2 is a partial structural exploded view of the battery module shown in fig. 1;

fig. 3 is an assembly relationship view illustrating a partial structure of the battery module shown in fig. 2;

fig. 4 is a schematic view illustrating an assembly relationship of a partial structure of the battery module shown in fig. 3 at different viewing angles.

Description of the reference numerals

1. A connector; 2. a housing; 3. a body; 4. a rigid circuit board; 5. a flexible circuit board; 6. an output side; 7. insulating fixed blocks; 8. a conductive rod; 9. mounting a plate; 10. a module end plate; 11. a mounting member; 12. a bending section; 13. a chute; 14. mounting a boss; 15. a raised structure; 16. a groove structure; 17. and (4) opening.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The utility model provides a battery module, as shown in fig. 1-4, battery module include connector 1, casing 2 and encapsulate in body 3 and printed circuit board in casing 2, printed circuit board includes rigid circuit board 4 and flexible circuit board 5, body 3 passes through rigid circuit board 4 with flexible circuit board 5 electricity is connected, casing 2 is provided with opening 17, connector 1 install in opening 17 and with flexible circuit board 5 electricity is connected, connector 1 includes the orientation output side 6 that the outside of casing 2 set up. It is understood that the body 3 includes a cell unit and a bus bar electrically connected to the cell unit, the rigid circuit board 5 is mounted on the bus bar and electrically connected to the bus bar through a nickel plate to collect various parameter information (e.g., voltage signal and temperature signal) of the cell unit, the rigid circuit board 5 transmits the collected parameter information to the connector 1 through the flexible circuit board 5, and the connector 1 can be connected to other electrical members provided outside the housing through the output side 6 to transmit the parameter information to the outside of the housing.

Through the technical scheme, the utility model provides a battery module, power battery package and vehicle, this battery module is through encapsulating printed circuit board in casing 2, and install connector 1 at the opening part of casing 2, solved and set up connector 1 outside casing 2 of battery module and lead to taking up the problem of too much installation space between casing of power battery package and the casing of battery module, the design is more reasonable, reduced the probability that the connector receives external impact, and connector 1 can also transmit the vibration impact to rigid circuit board 4 through flexible circuit board 5, make flexible circuit board 5 can absorb some impact, compared with the impact that the rigid circuit board directly receives the external impact because of extending to the casing in the prior art, reduced the impulsive force effect that rigid circuit board 5 received, the service life of the rigid circuit board 5 is prolonged, and the safety performance is better.

In order to reduce the chance of connector 1 being subjected to vibration shocks, the end face of output side 6 may be flush with the outwardly extending outer end face of opening 17; in order to further reduce the possibility of the connector 1 being subjected to vibration impact, the end face of the output side 6 is arranged inside the outer end face of the opening 17 extending outwards, so that the protection effect of the housing is improved, the output side 6 can be hidden in the opening 17 as shown in fig. 4, water can be prevented, and the safety effect is better.

Further, connector 1 includes insulating fixed block 7 and a plurality of conducting rod 8, insulating fixed block 7 install in opening 17 and including respectively with a plurality of conducting rod 8 corresponds a plurality of the mounting hole that sets up, conducting rod 8's one end with insulating fixed block 7's lateral surface flushes in order to form output side 6, conducting rod 8's the other end passes the mounting hole and the orientation extend in casing 2 in with be connected with flexible circuit board 5 electricity, the structure is more neat, avoided because of the conducting rod 8 of output side 6 department extend the easy other parts that lead to of insulating fixed block 7 take place to interfere the scheduling problem with the casing outside other parts, and is safer, has still practiced thrift occupation space, is favorable to the structure compacter.

As shown in fig. 2 and 3, the battery module includes a mounting plate 9 mounted on the housing 2, the flexible circuit board 5 is inserted into a gap formed between the mounting plate 9 and the housing 2, and the other ends of the conductive rods 8 are respectively inserted into a plurality of holes of the flexible circuit board 5 and assembled to the mounting plate 9, so that the flexible circuit board and the connector can be simultaneously fixed at a certain mounting position of the housing without displacement due to the arrangement of the mounting plate 9, thereby facilitating the assembly operation between the connector 1 and the flexible circuit board 5, improving the assembly firmness between the flexible circuit board and the connector, and optimizing the impact resistance of the connector. For example, the two ends of the mounting plate 9 are fixed on the shell 2, the middle part of the mounting plate and the shell are arranged at intervals to form the gap, the structure is simple, and the processing and the assembly are convenient. The mounting plate 9 may be made of various reasonable materials, for example, an insulating material that is the same as the material of the plate body of the rigid circuit board, so as to improve the insulating protection effect.

In order to reduce the assembly degree of difficulty between connector 1 and the casing 2, the outer peripheral edges of insulating fixed block 7 and one of them is provided with groove structure 16 in the circumference pore wall of opening 17, another be provided with the protruding structure 15 of groove structure 16 adaptation for can assemble through the mode of joint between connector 1 and the casing 2, convenient to detach and installation, easy operation. For example, the outer periphery of the insulating fixing block 7 is provided with a groove structure 16, and the circumferential hole wall of the opening 17 is provided with a convex structure 15, or vice versa.

As shown in fig. 2-4, the housing 2 comprises a module end plate 10 and a mounting member 11, the mounting member 11 is assembled with the mounting plate 9 and has the opening 17, the module end plate 10 has a top slot for mounting the mounting member 11, and the structure is simpler and is convenient to process and assemble. Wherein, the both ends of mounting panel 9 are fixed on installed part 11, and the interval sets up in order to form between the middle part of mounting panel and the installed part 11 the clearance, then flexible circuit board 5 and connector 1 all assemble on installed part 11, are convenient for concentrate and assemble the operation, have still simplified the structure of module end plate 10, are convenient for process. Further, the mounting member 11 may be provided with a plurality of lightening holes that escape from the opening 17 to lighten the overall weight of the battery module.

Further, in order to simplify the assembly operation between the module end plate 10 and the mounting member 11, one of the inner side wall of the top slot of the module end plate 10 and the outer side wall of the mounting member 11 is provided with the sliding groove 13, and the other one is provided with the mounting protrusion 14 matched with the sliding groove 13, so that the assembly and disassembly are convenient, and the operation is convenient. For example, the inner side wall of said top slot of the module end plate 10 is provided with said sliding groove 13 and the outer side wall of the mounting 11 is provided with a mounting protrusion 14, or vice versa. When the connector is used, the flexible circuit board 5 is connected with the rigid circuit board, then the connector is assembled with the flexible circuit board 5 and the mounting plate (the middle part) through the conductive columns, the insulating fixing block 7 of the connector 1 is inserted into the opening of the mounting piece 11, and the two ends of the mounting plate are assembled on the mounting piece 11 (at the moment, the middle part of the mounting plate is arranged corresponding to the opening of the mounting piece 11, and the flexible circuit board 5 is inserted into the gap between the mounting plate and the mounting piece), so that the flexible circuit board and the connector are assembled on the mounting piece 11 at the same time; finally, insert above-mentioned installed part 11 in the top fluting of module end plate and with module end plate assembly together, easy operation, the installation is swift, has improved assembly efficiency. Certainly, can also bond fixed connector 1's insulating fixed block 7 and installed part 11 through UV glue, so that connector 1 can encapsulate the opening part at the casing more tightly, holistic sealed effect has been optimized, also can bond installed part 11 and module end plate through UV glue, holistic safe fastness and leakproofness have more been optimized, waterproof fireproof performance is better, still be favorable to carrying out the encapsulating operation in the inside of battery module in order to form overall structure, the overall stability of battery module has been improved, shock resistance is stronger.

As shown in fig. 3 and 4, the flexible circuit board 5 is provided with a bending portion 12 capable of deforming under the action of external force, so that the flexible circuit board 5 deforms slightly under the action of expansion deformation of the battery cell to adapt to expansion change of the battery cell, thereby avoiding breakage of the flexible circuit board 5, prolonging the service life of the flexible circuit board, and further enabling the flexible circuit board 5 to deform slightly under the action of vibration impact transmitted by the connector 1 to absorb partial energy, reducing the impact force action on the rigid circuit board, prolonging the service life of the rigid circuit board, and achieving better safety performance. It is worth mentioning that the flexible circuit board can be configured as a bent plate structure, which makes full use of the characteristics of flexibility and easy deformation of the flexible circuit board, for example, the main body portion of the flexible circuit board located in the middle extends along the horizontal direction, and one side of the flexible circuit board bends downward to be assembled with the rigid circuit board, and the other side of the flexible circuit board bends downward to be assembled with the connector (for example, bends downward by 90 ° to make the bent side plate surface perpendicular to the plate surface of the main body portion); further, the deformation portion is arranged on the main body portion of the flexible circuit board and is arranged to be bent downwards, the upper portion of the rigid circuit board comprises an insulating support, the main body portion of the flexible circuit board is located above the insulating support, and the deformation portion is clamped in a groove of the insulating support, so that the flexible circuit board is convenient to fix the mounting position of the flexible circuit board, short circuit of the flexible circuit board and the battery cell unit due to easy deformation can be avoided, the insulation effect is better, and the fireproof performance is optimized.

The utility model also provides a power battery package, power battery package includes the battery module.

The utility model also provides a vehicle, the vehicle includes power battery package.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The battery module is characterized by comprising a connector (1), a shell (2), a body (3) and a Printed Circuit Board (PCB), wherein the body (3) and the PCB are packaged in the shell (2), the PCB comprises a rigid circuit board (4) and a flexible circuit board (5), the body (3) is electrically connected with the flexible circuit board (5) through the rigid circuit board (4), the shell (2) is provided with an opening (17), the connector (1) is installed in the opening (17) and is electrically connected with the flexible circuit board (5), and the connector (1) comprises an output side (6) facing the outer side of the shell (2).

2. The battery module according to claim 1, wherein an end face of the output side (6) is provided inside an outer end face of the opening (17) extending outward.

3. The battery module according to claim 2, wherein the connector (1) comprises an insulating fixing block (7) and a plurality of conductive rods (8), the insulating fixing block (7) is mounted to the opening (17) and includes a plurality of mounting holes respectively provided corresponding to the plurality of conductive rods (8), one end of the conductive rod (8) is flush with an outer side surface of the insulating fixing block (7) to form the output side (6), and the other end of the conductive rod (8) passes through the mounting hole and extends toward the inside of the housing (2) to be electrically connected with the flexible circuit board (5).

4. The battery module according to claim 3, wherein the battery module comprises a mounting plate (9) mounted to the housing (2), and the flexible circuit board (5) is inserted into a gap formed between the mounting plate (9) and the housing (2), and the other ends of the plurality of conductive rods (8) are respectively inserted through the plurality of openings of the flexible circuit board (5) and fitted to the mounting plate (9).

5. The battery module according to claim 3, wherein one of the outer periphery of the insulating fixing block (7) and the circumferential hole wall of the opening (17) is provided with a groove structure (16), and the other is provided with a protrusion structure (15) fitting with the groove structure (16).

6. The battery module according to claim 4, wherein the housing (2) comprises a module end plate (10) and a mounting member (11), the mounting member (11) being assembled with the mounting plate (9) and having the opening (17), the module end plate (10) having a top slot to mount the mounting member (11).

7. The battery module according to claim 6, wherein one of the top slotted inner side wall of the module end plate (10) and the outer side wall of the mounting member (11) is provided with a sliding groove (13), and the other is provided with a mounting protrusion (14) fitted with the sliding groove (13).

8. The battery module according to any one of claims 1 to 7, wherein the flexible circuit board (5) is provided with a bent portion (12) that can be deformed by an external force.

9. A power battery pack, characterized in that, the power battery pack comprises the battery module according to any one of claims 1-8.

10. A vehicle characterized in that the vehicle comprises the power battery pack according to claim 9.