Battery pack and energy storage device

Patent metadata

Field	Value
Publication number	US-12199299-B1
Application number	US-202418748854-A
Country	US
Kind code	B1
Filing date	Jun 20, 2024
Priority date	Aug 14, 2023
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

Disclosed are a battery pack and an energy storage device. The battery pack includes a box, a battery module, a liquid cooling plate, a connection valve, a liquid supply pipe and a protection structure. The box is provided with an accommodation cavity and a mounting hole communicating with the accommodation cavity. The battery module is provided in the accommodation cavity. The liquid cooling plate is provided in the accommodation cavity and configured for cooling the battery module. The connection valve is provided in the mounting hole, and one end of the connection valve located outside the accommodation cavity is configured for connecting to a cooling cabinet. The liquid supply pipe is communicated with the liquid cooling plate and one end of the connection valve facing the accommodation cavity. The protection structure is detachably provided in the box, is located outside the accommodation cavity, and covers the connection valve.

First claim

What is claimed is:

1. A battery pack, comprising:
a box, wherein the box is provided with an accommodation cavity and a mounting hole, and the mounting hole is communicated with the accommodation cavity;
a battery module, wherein the battery module is provided in the accommodation cavity;
a liquid cooling plate, wherein the liquid cooling plate is provided in the accommodation cavity, and the liquid cooling plate is configured for cooling the battery module;
a connection valve, wherein the connection valve is provided in the mounting hole, and one end of the connection valve that is located outside the accommodation cavity is configured for connecting to a cooling cabinet;
a liquid supply pipe, wherein the liquid supply pipe is communicated with the liquid cooling plate and one end of the connection valve facing the accommodation cavity; and
a protection structure, wherein the protection structure comprises a first protection member and a second protection member, the first protection member is connected to the box, the first protection member is arranged around a periphery of the connection valve, the first protection member is provided with an open end corresponding to the connection valve, and the second protection member is detachably connected to the first protection member and closes the open end.

2. The battery pack according to claim 1 , wherein an outer peripheral surface of the second protection member is detachably connected to an inner peripheral surface of the first protection member, and the second protection member is located between the first protection member and the connection valve and covers the connection valve.

3. The battery pack according to claim 1 , wherein an inner peripheral surface of the second protection member is detachably connected to an outer peripheral surface of the first protection member, and the second protection member covers the open end.

4. The battery pack according to claim 1 , wherein the first protection member is provided with a first clamping part, the second protection member is provided with a second clamping part, and the second clamping part is detachably connected to the first clamping part.

5. The battery pack according to claim 2 , wherein the first protection member is provided with a first clamping part, the second protection member is provided with a second clamping part, and the second clamping part is detachably connected to the first clamping part.

6. The battery pack according to claim 3 , wherein the first protection member is provided with a first clamping part, the second protection member is provided with a second clamping part, and the second clamping part is detachably connected to the first clamping part.

7. The battery pack according to claim 4 , wherein one of the first clamping part and the second clamping part is provided with a convex portion, the other of the first clamping part and the second clamping part is provided with a concave portion, and the second protection member can rotate relative to the first protection member to engage the convex portion with or separate the convex portion from the concave portion.

8. The battery pack according to claim 7 , wherein one end of the second protection member facing away from the box is provided with a handle portion, and the handle portion is configured for a user to rotate the second protection member.

9. The battery pack according to claim 1 , wherein the battery pack further comprises a connector, the connector is provided in the mounting hole, one end of the connector protrudes into the accommodation cavity and is connected to the liquid supply pipe, and the other end of the connector protrudes out of the mounting hole and is connected to the connection valve.

10. The battery pack according to claim 2 , wherein the battery pack further comprises a connector, the connector is provided in the mounting hole, one end of the connector protrudes into the accommodation cavity and is connected to the liquid supply pipe, and the other end of the connector protrudes out of the mounting hole and is connected to the connection valve.

11. The battery pack according to claim 3 , wherein the battery pack further comprises a connector, the connector is provided in the mounting hole, one end of the connector protrudes into the accommodation cavity and is connected to the liquid supply pipe, and the other end of the connector protrudes out of the mounting hole and is connected to the connection valve.

12. The battery pack according to claim 1 , wherein a sealing member is provided between the connection valve and the liquid supply pipe, and the sealing member is configured for sealing a connection between the connection valve and the liquid supply pipe.

13. The battery pack according to claim 2 , wherein a sealing member is provided between the connection valve and the liquid supply pipe, and the sealing member is configured for sealing a connection between the connection valve and the liquid supply pipe.

14. The battery pack according to claim 3 , wherein a sealing member is provided between the connection valve and the liquid supply pipe, and the sealing member is configured for sealing a connection between the connection valve and the liquid supply pipe.

15. The battery pack according to claim 1 , wherein a limiting portion is provided on a peripheral side of the connection valve, and the limiting portion abuts against an outer surface of the box along an extension direction of the mounting hole.

16. The battery pack according to claim 2 , wherein a limiting portion is provided on a peripheral side of the connection valve, and the limiting portion abuts against an outer surface of the box along an extension direction of the mounting hole.

17. The battery pack according to claim 1 , wherein the box comprises a base and a cover, the cover covers and is connected to the base to form the accommodation cavity, the mounting hole is provided in the base, the liquid cooling plate is provided in the base, and the battery module is carried on the liquid cooling plate.

18. The battery pack according to claim 17 , wherein the base comprises a bottom plate and a plurality of side plates, the plurality of side plates are provided on the bottom plate, and are connected end to end to form a positioning groove with the bottom plate, the liquid cooling plate is provided in the positioning groove, the battery module is partially located in the positioning groove for positioning, the cover covers and is connected to the plurality of side plates, and the accommodation cavity is formed between the cover and the positioning groove.

19. The battery pack according to claim 18 , wherein the bottom plate and the liquid cooling plate are an integrally molded piece, or the bottom plate and the liquid cooling plate are two independent pieces connected to each other.

20. An energy storage device, comprising the battery pack according to claim 1 .

Assignees

• Shenzhen Hithium Energy Storage Control Tech Co Ltd
• Xiamen Hithium Energy Storage Tech Co Ltd
• Shenzhen Hithium Energy Storage Technology Co Ltd

Inventors

• Li Yongqiang
• Zhong Deliang

Classifications

• H01M50/244

  Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method · CPC title

• H01M10/6568

  characterised by flow circuits, e.g. loops, located externally to the cells or cell casings · CPC title

• H01M10/6556

  Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) · CPC title

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title