CN-122000526-A - Battery pack and electric equipment

Abstract

A battery pack comprises a first shell and a battery cell module accommodated in the first shell. The first housing includes a first opening. The cell module comprises a plurality of cell modules arranged along a first direction. A first channel is formed between two adjacent cell assemblies and is communicated with the outside of the battery pack through a first opening. The cell assembly includes at least one cell. The battery cell comprises a second shell, a first electrode terminal and a second electrode terminal, wherein the second shell comprises a first end face and a second end face, and the first end face and the second end face are oppositely arranged along a second direction perpendicular to the first direction. The first electrode terminal protrudes from the first end face, and the second electrode terminal protrudes from the second end face. The first channel extends along a third direction that is perpendicular to the first direction and the second direction.

Inventors

• PENG FANGGUI
• LI LUMING
• 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, the battery cell comprises a second shell, a first electrode terminal and a second electrode terminal, the second shell comprises a first end face and a second end face, the first end face and the second end face are arranged opposite to each other along a second direction perpendicular to the first direction, the first electrode terminal protrudes from the first end face, and the second electrode terminal protrudes from the second end face; 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 cell assembly comprises a protective structure, wherein the protective structure is arranged around the battery cell and wraps a part of the battery cell.
4. 4. The battery pack of claim 3, 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.
5. 5. The battery pack of claim 4, wherein the wrap comprises a film, a metal housing, or an injection molded housing.
6. 6. The battery pack of claim 4 or 5, wherein, 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.
7. 7. The battery pack of claim 6, 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.
8. 8. The battery pack according to any one of claim 4 to 7, 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.
9. 9. The battery pack of any one of claims 2 to 8, wherein the battery pack comprises a first circuit board and a second circuit board electrically connected to the first circuit board; 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 connecting circuit board, the battery core module and the first connecting circuit board are arranged along the second direction, and the battery core module and the second circuit board are arranged along the first 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 according to any one of claims 9 to 13, further comprising: 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.
15. 15. The battery pack of claim 14, 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.
16. 16. The battery pack of claim 14 or 15, wherein the battery pack comprises a plurality of battery cells, 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.
17. 17. The battery pack of claim 16, 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.
18. 18. The battery pack of claim 17, 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.
19. 19. The battery pack of claim 18, 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.
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 and a battery cell module accommodated in the first shell. The first housing includes a first opening. The cell module comprises a plurality of cell modules arranged along a first direction. A first channel is formed between two adjacent cell assemblies and is communicated with the outside of the battery pack through a first opening. The cell assembly includes at least one cell. The battery cell comprises a second shell, a first electrode terminal and a second electrode terminal, wherein the second shell comprises a first end face and a second end face, and the first end face and the second end face are oppositely arranged along a second direction perpendicular to the first direction. The first electrode terminal protrudes from the first end face, and the second electrode terminal protrudes from the second end face. The first channel extends along a third direction that is perpendicular to the first direction and the second direction. In the application, the first electrode terminal and the second electrode terminal are respectively arranged at two sides of the battery core along the second direction, so that the design size of the first electrode terminal and the second electrode terminal is larger, and the battery core is favorable for realizing high-rate discharge. When the battery core discharges at a high multiplying power, the temperature of the first electrode terminal and the second electrode terminal can rise rapidly, the application can lead the first channel formed between the adjacent battery core components and the space outside the first shell to form air convection by arranging the first opening, the heat dissipation efficiency of the battery pack is improved, the temperature rise of the first electrode terminal and the second electrode terminal during high-rate discharge is reduced, and the safety performance and the service life of the battery pack are 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 cell assembly includes a guard structure disposed about the cell and surrounding a portion of the cell. The protection structure can protect the battery cell and can limit disordered expansion of the battery cell. In one or more alternative embodiments, the protective structure includes a protective plate and a sheathing member, the second case includes a body portion and a first sealing portion connected to the body portion, the first sealing portion being located at different sides of the body portion from the first electrode terminal and the second electrode terminal, the sheathing member sheathing the body portion and the first sealing portion, and/or the protective plate is fixed to the sheathing member and/or the protective plate is fixed to the first sealing portion. In one or more alternative embodiments above, the wrap comprises a film, a metal shell, or an injection molded shell. In one or more alternative embodiments, the protection plate is arranged between the wrapping piece and the battery core, the first sealing part comprises a first side sealing part and a second side sealing part, the first side sealing part and the second side sealing part are respectively arranged on two sides of the main body part along the third direction, the protection plat