CN-122000525-A - Battery pack and electric equipment

Abstract

A battery pack comprises a first shell, a battery cell module, a first circuit board and a second circuit board. The first housing includes a first opening. The battery cell module is accommodated in the first shell, the battery cell module comprises a plurality of battery cell modules, the battery cell modules are arranged along a first direction, a first channel is formed between two adjacent battery cell modules, and the first channel is communicated with the outside of the battery pack through a first opening. The battery cell assembly comprises at least one battery cell, and the battery cell comprises a second shell and electrode terminals, wherein the electrode terminals protrude out of the second shell. The first circuit board is electrically connected to the electrode terminals, and the first circuit board and the cell module are arranged in a second direction perpendicular to the first direction. The second circuit board is electrically connected with the first circuit board, and the second circuit board and the cell module are arranged along a first direction. The first channel extends along a third direction that is perpendicular to the first direction and the second direction.

Inventors

• PENG FANGGUI
• HU LIJUAN
• Nong Wenbin

Assignees

• 厦门新能达科技有限公司

Dates

Publication Date

20260508

Application Date

20241105

Claims (20)

1. 1. A battery pack, comprising: A first housing including a first opening; The battery cell module is accommodated in the first shell and comprises a plurality of battery cell modules, the battery cell modules are arranged along a first direction, a first channel is formed between two adjacent battery cell modules, and the first channel is communicated with the outside of the battery pack through the first opening; The battery cell assembly comprises at least one battery cell, wherein the battery cell comprises a second shell and electrode terminals, and the electrode terminals protrude out of the second shell; A first circuit board electrically connected to the electrode terminals, the first circuit board and the cell module being arranged in a second direction perpendicular to the first direction; the second circuit board is electrically connected with the first circuit board, and the battery core module and the second circuit board are arranged along the first direction; the first channel extends along a third direction that is perpendicular to the first direction and the second direction.
2. 2. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells, The first shell comprises a top cover, a bottom cover, a first side plate and a second side plate, the top cover and the bottom cover are respectively arranged on two sides of the battery cell module along the first direction, and the first side plate and the second side plate are respectively arranged on two sides of the battery cell module along the second direction; the top cover is connected with the first side plate and the second side plate respectively, the bottom cover is connected with the first side plate and the second side plate respectively, and the top cover, the bottom cover, the first side plate and the second side plate form the first opening.
3. 3. The battery pack according to claim 1 or 2, wherein the battery pack comprises: The first structural component is connected to the first shell, and the battery cell module, the first structural component and the second circuit board are arranged along the first direction; along the first direction, the second circuit board is arranged on one side, far away from the battery cell module, of the first structural member and is fixedly connected with the first structural member.
4. 4. The battery pack of claim 3, wherein the battery pack comprises a plurality of battery cells, The first structural member comprises a main body and a bottom connected with the main body, the bottom is arranged on one side, close to the battery cell module, of the first structural member, and the bottom is configured as a radiator; the bottom portion includes a second channel extending in the third direction.
5. 5. The battery pack of claim 3 or 4, wherein, The battery pack comprises a communication wire harness, the first structural member comprises a first through hole, and the communication wire harness penetrates through the first through hole to be electrically connected with the second circuit board.
6. 6. The battery pack of claim 5, wherein the battery pack comprises a plurality of battery cells, The first structural member includes a side portion connected with the main body, and the first through hole is located between the main body and the side portion.
7. 7. The battery pack of claim 6, wherein the battery pack comprises a plurality of battery cells, The battery pack comprises a connector, and the first structural member comprises a mounting part which is arranged on the side part; the connector is fixed on the mounting part and is electrically connected with the second circuit board.
8. 8. The battery pack of claim 7, wherein the battery pack comprises a plurality of battery cells, The first through hole comprises a first sub through hole and a second sub through hole, the side part comprises a first side part and a second side part, the mounting part comprises a first mounting part and a second mounting part, the connector comprises a first connector and a second connector, and the communication wire harness comprises a first communication wire harness and a second communication wire harness; The first side part and the second side part are respectively arranged at two sides of the main body along the second direction, the first sub through hole is positioned between the first side part and the main body, the second sub through hole is positioned between the second side part and the main body, the first communication wire harness passes through the first sub through hole and is electrically connected with the second circuit board, and the second communication wire harness passes through the second sub through hole and is electrically connected with the second circuit board; the first mounting part is arranged on the first side part, and the first connector is fixed on the first mounting part and is electrically connected with the second circuit board; The second mounting part is arranged on the second side part, and the second connector is fixed on the second mounting part and is electrically connected with the second circuit board.
9. 9. The battery pack according to any one of claim 2 to 8, The electrode terminal comprises a first electrode terminal and a second electrode terminal, the second shell comprises a first end face and a second end face which are oppositely arranged along the second direction, the first electrode terminal protrudes from the first end face, and the second electrode terminal protrudes from the second end face; the first circuit board comprises a first connecting circuit board and a second connecting circuit board, the first connecting circuit board is electrically connected with the first electrode terminal, and the second connecting circuit board is electrically connected with the second electrode terminal; the second connection circuit board, the battery core module and the first connection circuit board are arranged along the second direction.
10. 10. The battery pack of claim 9, further comprising a first thermally conductive member and a second thermally conductive member; the first heat conduction piece covers the first electrode terminal and is connected with the first side plate, and the second heat conduction piece covers the second electrode terminal and is connected with the second side plate.
11. 11. The battery pack of claim 10, wherein a first insulating layer is disposed on the first side plate and a second insulating layer is disposed on the second side plate; The first heat conduction piece is in contact connection with the first insulating layer, and the second heat conduction piece is in contact connection with the second insulating layer.
12. 12. The battery pack of any one of claims 9 to 11, further comprising a first seal and a second seal; the first sealing piece is filled in a gap between the first connecting circuit board and the first side plate, and the second sealing piece is filled in a gap between the second connecting circuit board and the second side plate.
13. 13. The battery pack of claim 12, wherein the second housing includes a first top seal portion and a second top seal portion, the first top seal portion and the second top seal portion being disposed on opposite sides of the main body portion, respectively, along the second direction; the first seal wraps around a portion of the first top seal and the second seal wraps around a portion of the second top seal.
14. 14. The battery pack as claimed in any one of claims 9 to 13, wherein, The battery cell assembly comprises a protective structure, wherein the protective structure is arranged around the battery cell and wraps a part of the battery cell.
15. 15. The battery pack of claim 14, wherein the battery pack comprises a plurality of battery cells, The protective structure comprises a protective plate and a wrapping piece; The second case includes a main body part and a first sealing part connected to the main body part, the first sealing part and the first and second electrode terminals being located at different sides of the main body part, the sheathing member sheathing the main body part and the first sealing part; the protection plate is fixed to the wrapping member, and/or the protection plate is fixed to the first sealing portion.
16. 16. The battery pack of claim 15, wherein the wrap comprises a film, a metal housing, or an injection molded housing.
17. 17. The battery pack of claim 15 or 16, wherein the battery pack comprises a plurality of battery cells, The protection plate is arranged between the wrapping piece and the battery cell; The first sealing part comprises a first side sealing part and a second side sealing part, and the first side sealing part and the second side sealing part are respectively arranged at two sides of the main body part along the third direction; the protection plates comprise a first protection plate and a second protection plate; the first protection plate, the second protection plate, the first side seal part, the second side seal part and the wrapping piece satisfy the following conditions: a) The first protection plate is fixed on the first side sealing part, and/or the first protection plate is fixed on the wrapping piece; b) The second protection plate is fixed on the second side sealing part and/or the second protection plate is fixed on the wrapping piece.
18. 18. The battery pack of claim 17, wherein the battery pack comprises a plurality of battery cells, The main body part comprises a first surface and a second surface, and the first surface is opposite to the second surface along the first direction; in the first direction, the shield plate is located between the first surface and the second surface.
19. 19. The battery pack of any one of claim 15 to 18, The second shell further comprises a second sealing part, the second sealing part comprises a first top sealing part and a second top sealing part, and the first top sealing part and the second top sealing part are respectively arranged at two sides of the main body part along the second direction; Along the third direction, the projection of the shield plate covers the projection of the first seal portion and the projection of the second seal portion.
20. 20. The battery pack as claimed in any one of claim 2 to 19, The first side plate comprises a first substrate and a first heat dissipation part connected with the first substrate, the first heat dissipation part is arranged on one side of the first substrate far away from the battery cell module along the second direction, the first heat dissipation part comprises a third channel, the third channel extends along the first direction, and/or The second side plate comprises a second substrate and a second heat dissipation piece connected with the second substrate, the second heat dissipation piece is arranged on one side, far away from the battery cell module, of the second substrate along the opposite direction of the second direction, the second heat dissipation piece comprises a fourth channel, and the fourth channel extends along the first direction.

Description

Battery pack and electric equipment Technical Field The application relates to the technical field of batteries, in particular to a battery pack and electric equipment. Background At present, the battery pack is widely applied to the fields of unmanned aerial vehicles, electric vehicles, energy storage equipment and the like. The battery pack can appear the too high problem of electric temperature in the use, when battery pack discharge is accomplished and is needed the charging, need make the temperature of electric core reduce to the safe range. Therefore, it is necessary to improve the heat dissipation efficiency of the battery pack. Disclosure of Invention The application aims to provide a battery pack with a good heat dissipation effect and electric equipment. The first aspect of the application provides a battery pack, which comprises a first shell, a battery cell module, a first circuit board and a second circuit board. The first housing includes a first opening. The battery cell module is accommodated in the first shell, the battery cell module comprises a plurality of battery cell modules, the battery cell modules are arranged along a first direction, a first channel is formed between two adjacent battery cell modules, and the first channel is communicated with the outside of the battery pack through a first opening. The battery cell assembly comprises at least one battery cell, and the battery cell comprises a second shell and electrode terminals, wherein the electrode terminals protrude out of the second shell. The first circuit board is electrically connected to the electrode terminals, and the first circuit board and the cell module are arranged in a second direction perpendicular to the first direction. The second circuit board is electrically connected with the first circuit board, and the battery core module and the second circuit board are arranged along the first direction. The first channel extends along a third direction that is perpendicular to the first direction and the second direction. The first opening is arranged, so that the first channel formed between the adjacent cell assemblies and the space outside the first shell can form air convection, the heat dissipation effect of the battery pack is improved, and the first circuit board and the second circuit board are arranged on different sides of the cell module, so that heat generated by the first circuit board and heat generated by the second circuit board can be prevented from accumulating together, the mutual influence of the heat generated by the first circuit board and the heat generated by the second circuit board is reduced, and the heat dissipation effect is further improved. In one or more alternative embodiments, the first housing includes a top cover, a bottom cover, a first side plate and a second side plate, the top cover and the bottom cover are respectively arranged at two sides of the battery cell module along a first direction, the first side plate and the second side plate are respectively arranged at two sides of the battery cell module along a second direction, the top cover is respectively connected with the first side plate and the second side plate, the bottom cover is respectively connected with the first side plate and the second side plate, and the top cover, the bottom cover, the first side plate and the second side plate form a first opening, so that the whole battery cell module can be exposed to the outside of the first housing through the first opening, the heat dissipation area is large, and the heat dissipation effect is good. In one or more alternative embodiments, the battery pack includes a first structural member connected to the first housing, and the battery module, the first structural member, and the second circuit board are arranged along a first direction, and the second circuit board is disposed on a side of the first structural member away from the battery module along the first direction and is fixedly connected with the first structural member. Through setting up fixed second circuit board of first structure, can improve the steadiness of second circuit board. In one or more of the above alternative embodiments, the first structural member includes a main body and a bottom connected to the main body, the bottom being disposed on a side of the first structural member adjacent to the cell module, the bottom being configured as a heat sink, the bottom including a second channel extending in a third direction. The bottom of the radiator can radiate heat on one side, close to the first structural member, of the second circuit board and the cell module, so that the radiating effect is further improved. In one or more alternative embodiments, the battery pack includes a communication harness, the first structural member includes a first through hole, and the communication harness is electrically connected to the second circuit board through the first through hole. In one or more alternative e