Battery pack cooling system and battery pack

Patent metadata

Field	Value
Publication number	US-11283123-B2
Application number	US-202017133564-A
Country	US
Kind code	B2
Filing date	Dec 23, 2020
Priority date	Nov 20, 2018
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

Disclosed are a battery pack cooling system and a battery pack. The battery pack cooling system includes: a cooling pipeline, which is provided inside the battery pack, provided with an inlet and an outlet, and configured to cool a battery module; an inlet connecting pipe, which extends into the battery pack and is connected to the inlet, and is provided with a first fool-proofing structure; and an outlet connecting pipe, which extends into the battery pack and is connected to the outlet, and is provided with a second fool-proofing structure, the second fool-proofing structure being different from the first fool-proofing structure.

First claim

What is claimed is:

1. A battery pack cooling system, comprising: a cooling pipeline provided inside a battery pack, the cooling pipeline being provided with an inlet and an outlet and configured to cool a battery module;
an inlet connecting pipe, which extends into the battery pack and is connected to the inlet, and is provided with a first fool-proofing structure; and
an outlet connecting pipe, which extends into the battery pack and is connected to the outlet, and is provided with a second fool-proofing structure, the second fool-proofing structure being different from the first fool-proofing structure;
wherein the first fool-proofing structure comprises a first matching member, a case of the battery pack is provided with a first assembly hole adapted to the first matching member, and the first matching member is assembled in the first assembly hole, an outer side of the first assembly hole is provided with a first cover plate and a first dust-proof pad, the first dust-proof pad being provided between the first cover plate and the first assembly hole, and the inlet connecting pipe passing through the first cover plate and the first dust-proof pad and being connected to the inlet; and
wherein the second fool-proofing structure comprises a second matching member, the case of the battery pack is provided with a second assembly hole adapted to the second matching member, and the second matching member is assembled in the second assembly hole, an outer side of the second assembly hole is provided with a second cover plate and a second dust-proof pad, the second dust-proof pad being provided between the second cover plate and the second assembly hole, and the outlet connecting pipe passing through the second cover plate and the second dust-proof pad and being connected to the outlet.

2. The cooling system according to claim 1 , wherein the first matching member is fixed to an outer wall of the inlet connecting pipe and is connected to the battery pack via a fixing member; and
the second matching member is fixed to an outer wall of the outlet connecting pipe and is connected to the battery pack via a fixing member.

3. The cooling system according to claim 2 , wherein a nonmetal protective pad is provided between each of the outer wall of the inlet connecting pipe and the outer wall of the outlet connecting pipe and the respective cover plate.

4. The cooling system according to claim 1 , wherein the first matching member and the second matching member each comprise an oval disk and a protrusion, the protrusion being provided on a side face of the oval disk; and
positions of the protrusions of the first matching member and the second matching member on the respective oval disks are different.

5. The cooling system according to claim 1 , wherein a first sealing component is provided between the first matching member and the first assembly hole; and a second sealing component is provided between the second matching member and the second assembly hole.

6. The cooling system according to claim 1 , wherein one end of the inlet connecting pipe or the outlet connecting pipe is provided with a first connector, the first connector being configured to be connected to the inlet or the outlet, and the other end of each of the inlet connecting pipe and the outlet connecting pipe is provided with a second connector, an outer wall of the second connector being provided with a first rib protruding toward an outer side thereof; and
a circumferential position of the first rib on the outer wall of the second connector of the inlet connecting pipe is a first position, a circumferential position of the first rib on the outer wall of the second connector of the outlet connecting pipe is a second position; the first position and the second position are different.

7. The cooling system according to claim 6 , wherein the outer wall of the second connector of each of the inlet connecting pipe and the outlet connecting pipe is further provided with a second rib; and
a circumferential position of the second rib on the outer wall of the second connector of the inlet connecting pipe is a third position, a circumferential position of the second rib on the outer wall of the second connector of the outlet connecting pipe is a fourth position, the third position and the fourth position are different.

8. The cooling system according to claim 1 , wherein one end of the inlet connecting pipe is provided with a first connector, the first connector being configured to be connected to the inlet, and the other end of the inlet connecting pipe is provided with a second connector, an outer wall of the second connector being provided with a first rib protruding toward an outer side thereof.

9. The cooling system according to claim 8 , wherein the outer wall of the second connector of the inlet connecting pipe is further provided with a second rib.

10. The cooling system according to claim 1 , wherein one end of the outlet connecting pipe is provided with a first connector, the first connector being configured to be connected to the outlet, and the other end of the outlet connecting pipe is provided with a second connector, an outer wall of the second connector being provided with a first rib protruding toward an outer side thereof.

11. The cooling system according to claim 10 , wherein the outer wall of the second connector of the outlet connecting pipe is further provided with a second rib.

12. The cooling system according to claim 1 , wherein one end of the inlet connecting pipe is provided with a first connector, the first connector being configured to be connected to the inlet, and the other end of the inlet connecting pipe is provided with a second connector, an outer wall of the second connector being provided with a first rib protruding towards an outer side thereof;
one end of the outlet connecting pipe is provided with a first connector, the first connector being configured to be connected to the outlet, and the other end of the outlet connecting pipe is provided with a second connector, an outer wall of the second connector being provided with a first rib protruding towards an outer side thereof; and
a position of the first rib on one of the second connectors and a position of the first rib on the other one of the second connectors are different.

13. The cooling system according to claim 12 , wherein the outer wall of the second connector of the inlet connecting pipe is further provided with a second rib, and the outer wall of the second connector of the outlet connecting pipe is further provided with a second rib; and
a position of the second rib on one of the second connectors and a position of the second rib on the other one of the second connectors are different.

14. A battery pack, comprising:
two or more battery modules; and
a cooling system configured to cool the battery modules, the cooling system comprising:
a cooling pipeline provided inside the battery pack, the cooling pipeline being provided with an inlet and an outlet and configured to cool a battery module;
an inlet connecting pipe, which extends into the battery pack and is connected to the inlet, and is provided with a first fool-proofing structure; and
an outlet connecting pipe, which extends into the battery pack and is connected to the outlet, and is provided with a second fool-proofing structure, the second fool-proofing structure being different from the first fool-proofing structure;
wherein the first fool-proofing structure comprises a first matching member, a case of the battery pack is provided with a first assembly hole adapted to the first matching member, and the first matching member is a

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Gu Yanlong
• Huang Xiaoteng

Classifications

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M50/271

  Lids or covers for the racks or secondary casings · CPC title

• H01M10/6552

  Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/6567

  Liquids · CPC title