Battery pack

Patent metadata

Field	Value
Publication number	US-12199256-B2
Application number	US-202117345850-A
Country	US
Kind code	B2
Filing date	Jun 11, 2021
Priority date	Dec 29, 2018
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

A battery pack according to this application includes a lower support; a lower fastening member that is fastened onto the lower support and extending upwards along a height direction; an upper support plate provided above the lower fastening member; and a heat exchange plate directly fastened onto the upper support plate. In the battery pack according to this application, the heat exchange plate is directly fastened onto the upper support plate, which eliminates use of a position locking piece to position the heat exchange plate and ensures that flatness and positioning tolerance of the heat exchange plate are not affected.

First claim

What is claimed is:

1. A battery pack, comprising:
a lower support;
a lower fastening member that is fastened onto the lower support and extending upwards along a height direction;
an upper support plate provided above the lower fastening member; and
a heat exchange plate directly fastened onto the upper support plate, and comprising a first plate, a second plate, and a sinking platform, wherein the second plate is provided closer to the upper support plate than the first plate, the second plate is provided with a flow channel portion for forming a flow channel, the flow channel portion is recessed downward from a side facing the first plate and protrudes beyond the other side, and the sinking platform protrudes downwards beyond a lowest position of the flow channel portion along the height direction.

2. The battery pack according to claim 1 , wherein the heat exchange plate is mechanically fastened onto the upper support plate.

3. The battery pack according to claim 1 , wherein the sinking platform is formed by stamping together the first plate and the second plate.

4. The battery pack according to claim 1 , wherein
sinking platforms are provided at four corners of the heat exchange plate.

5. The battery pack according to claim 1 , wherein the upper battery module is fastened to an upper surface of the heat exchange plate by a structural adhesive.

6. The battery pack according to claim 1 , wherein the sinking platform is recessed downward from a side facing away from the upper support plate and protrudes towards the upper support plate, and the sinking platform is provided with a first hole running through the sinking platform in the height direction;
the upper support plate is provided with a second hole running through the upper support plate in the height direction, wherein the second hole is aligned with the first hole; and
the battery pack further comprises a fastener that passes through the first hole of the sinking platform and the second hole of the upper support plate to fasten the heat exchange plate onto the upper support plate.

7. The battery pack according to claim 6 , wherein the fastener does not protrude beyond an upper surface of the heat exchange plate.

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Bai Xueyu
• Gu Yanlong

Classifications

• H01M50/262

  with fastening means, e.g. locks · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M10/647

  Prismatic or flat cells, e.g. pouch cells · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title

• H01M50/204

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