Battery pack

Patent metadata

Field	Value
Publication number	US-10056658-B2
Application number	US-201615060646-A
Country	US
Kind code	B2
Filing date	Mar 4, 2016
Priority date	Mar 12, 2015
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A battery pack including a housing; at least one battery module arranged in the housing; and a cooling plate coupled to the housing and cooling the at least one battery module, wherein the cooling plate includes a first cooling plate that contacts the at least one battery module; a second cooling plate coupled to the first cooling plate, the second cooling plate including a flow path therein; and a container on the second cooling plate, the container having an inner space that is connected to the flow path.

First claim

What is claimed is:

1. A battery pack, comprising:
a housing;
at least one battery module arranged in the housing; and
a cooling plate coupled to the housing and cooling the at least one battery module,
wherein the cooling plate includes:
a first cooling plate that contacts the at least one battery module;
a second cooling plate coupled to the first cooling plate, the second cooling plate including a flow path therein; and
a container on the second cooling plate, the container having an inner space that is connected to the flow path, and
wherein, when the cooling plate is operated, a coolant enters the container in a first direction and exits the container in a second direction, the second direction being orthogonal to the first direction,
wherein the inner space of the container has a stair-step structure such that a volume of a flat-bottomed region of the inner space of the container into which the coolant flows from an inlet is larger than a volume of a flat-bottomed region of the inner space of the container out of which the coolant exits the container, the flat bottoms of the flat-bottomed regions of the inner space being parallel with one another, and the second direction being orthogonal to flat-bottomed surfaces of the flat-bottomed regions of the inner space.

2. The battery pack as claimed in claim 1 , wherein a surface of the first cooling plate is uneven.

3. The battery pack as claimed in claim 2 , wherein the at least one battery module is mounted on a protruding portion of the first cooling plate.

4. The battery pack as claimed in claim 1 , wherein the second cooling plate includes a projection that protrudes toward the first cooling plate.

5. The battery pack as claimed in claim 4 , wherein the projection is uneven.

6. The battery pack as claimed in claim 1 , wherein:
the at least one battery module includes a plurality of battery modules, and
a direction of the flow path and a direction in which the plurality of battery modules is arranged to form an angle or are parallel to each other.

7. The battery pack as claimed in claim 1 , wherein the cooling plate further includes a buffer that is connected to the flow path of the second cooling plate, the buffer having a space to temporarily store the coolant.

8. The battery pack as claimed in claim 1 , wherein the cooling plate includes a guide plate that directs the coolant toward the flow path in a third direction, the third direction being orthogonal to the first direction and to the second direction.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Park Juyong
• Yang Seungwoo
• Kim Hyun
• Ryu Jaelim

Classifications

• H01M50/209

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

• H01M10/6567

  Liquids · CPC title

• H01M10/6568

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

• H01M10/613

  Cooling or keeping cold · CPC title

• H01M10/625

  Vehicles · CPC title