Battery module and battery pack

Abstract

Provided in the present application are a battery module and a battery pack. In the battery module, a spacer and a vapor chamber are arranged between adjacent battery cells, wherein the vapor chamber is used for equalizing the temperatures of a high-temperature region and a low-temperature region of each battery cell, so as to achieve a uniform temperature over the surface of the battery cell, thereby overcoming the problem in the prior art of the service life of a battery cell being impacted by a large temperature difference within the battery cell.

Description

Battery module and battery pack

[0001]

[0002] The present application claims priority to the Chinese patent application No. 202422309342.3 filed on September 20, 2024 with the China Patent Office, the whole content of which is incorporated herein by reference.

[0003] TECHNICAL FIELD

[0004] The present application relates to the technical field of batteries, in particular to a battery module and a battery pack.

Claims

1. A battery module, wherein, The battery module comprises: a plurality of electric cores (10), the plurality of electric cores (10) are stacked along a first direction; a gasket (20) abutting between two adjacent electric cores (10), forming an installation gap (110) between the two adjacent electric cores (10); a heat plate (30), at least a part of the heat plate (30) is installed inside the installation gap (110) and is attached to the side of the electric core (10), and the gasket (20) and the heat plate (30) are at least partially non-overlapping along the first direction.

2. The battery module of claim 1, wherein, The side of the two adjacent electric cores (10) facing each other is respectively attached with the heat plate (30), and the two heat plates (30) located in the same installation gap (110) are spaced apart along the first direction.

3. The battery module of claim 1, wherein, The gasket (20) and the heat plate (30) are completely non-overlapping along the first direction, and the thickness of the gasket (20) is greater than the thickness of at least two heat plates (30) along the first direction.

4. The battery module according to claim 1, wherein The gasket (20) is arranged on the lower side of the heat plate (30) along the height direction of the electric core (10).

5. The battery module of claim 1, wherein, The gasket (20) comprises a plurality of sub-gaskets (210), and the plurality of sub-gaskets (210) are arranged along the outer circumferential side of the heat plate (30).

6. The battery module of claim 5, wherein, The gasket (20) comprises two sub-gaskets (210), and the two sub-gaskets (210) are symmetrically arranged on both sides of the heat plate (30).

7. The battery module of claim 5, wherein, The gasket (20) comprises three sub-gaskets (210), two of which are symmetrically arranged on both sides of the heat plate (30), and the other is arranged on the bottom side of the heat plate (30).

8. The battery module of claim 1, wherein, The gasket (20) is formed with a recess, and at least a part of the heat plate (30) is arranged inside the recess.

9. The battery module of any one of claims 1 to 8, wherein, The battery module further comprises: an outer shell; a heat dissipation member, the heat dissipation member, the electric core (10), the gasket (20) and the heat plate (30) are all arranged inside the outer shell, the heat dissipation member is arranged on the top side of the electric core (10), and a part of the heat plate (30) protrudes out of the gap (110) and contacts the heat dissipation member for heat dissipation.

10. The battery module of claim 9, wherein, The part of the two heat plates (30) exposed outside the gap (110) between the two adjacent electric cores (10) is bent in the opposite direction along the first direction to form two coplanar support surfaces (310), and the heat dissipation member is supported on the support surfaces (310).

11. The battery module of claim 10, wherein, The heat plate (30) is arranged one-to-one corresponding to the electric core (10), and the part of the heat plate (30) exposed outside the gap (110) is bent towards one side of the corresponding electric core (10).

12. The battery module according to claim 9, wherein The heat dissipation member is a plate structure (80), and a plurality of fins (810) are arranged on the side of the plate structure (80) away from the electric core (10).

13. The battery module of claim 9, wherein, The heat dissipation member is a heat-conductive adhesive coating arranged on the top of the uniform heating plate (30).

14. The battery module of claim 9, wherein, The heat dissipation member is a liquid cooling plate (70), and a liquid cooling medium flows inside the liquid cooling plate (70).

15. The battery module of any one of claims 1-8, wherein, The battery module further comprises a connecting piece (60), and two adjacent battery cells (10) are electrically connected through the connecting piece (60). In a second direction perpendicular to the first direction, one end of the connecting piece (60) is connected with the battery cell (10), and the other end of the connecting piece (60) is bent towards one side of the bottom or the top of the battery cell (10).

16. The battery module of claim 15, wherein, The connecting piece (60) comprises a first bending section (610) and a second bending section (620), the first bending section (610) has an avoiding hole (611) for avoiding the gap (110), and the first bending section (610) is divided into two parts connected with two battery cells (10) respectively by the avoiding hole (611), and the uniform heating plate (30) is located in the avoiding hole (611).

17. The battery module of claim 16, wherein, The first bending section (610) and the second bending section (620) are integrally formed.

18. The battery module of claim 16, wherein, The first bending section (610) and the second bending section (620) are arranged perpendicularly.

19. A battery pack, wherein, The battery pack comprises a battery module, and the battery module comprises: A plurality of battery cells (10) are arranged, and the plurality of battery cells (10) are stacked in a first direction. A gasket (20) is arranged between two adjacent battery cells (10), and an installation gap (110) is formed between the two adjacent battery cells (10). A uniform heating plate (30) is arranged at least partially in the installation gap (110) and is attached to the side surface of the battery cell (10), and the gasket (20) and the uniform heating plate (30) are at least partially not overlapped in the first direction.

20. The battery pack of claim 19, wherein, The side surfaces of two adjacent battery cells (10) are respectively attached with the uniform heating plate (30), and two uniform heating plates (30) located in the same installation gap (110) are arranged in the first direction.

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