Thermal management system of battery pack

Patent metadata

Field	Value
Publication number	US-2017256830-A1
Application number	US-201615336169-A
Country	US
Kind code	A1
Filing date	Oct 27, 2016
Priority date	Mar 7, 2016
Publication date	Sep 7, 2017
Grant date	—

Abstract

The present application relates to a thermal management system of a battery pack, which includes a battery pack and a cooling device of the battery pack, the battery pack includes a plurality of single batteries, the cooling device of the battery pack includes cooling fins and uniform temperature plates, the uniform temperature plates are arranged outside the batteries. This application has the following beneficial effect: uniform temperature plates are arranged between single batteries, cooling fin in accordance with the single batteries are arranged on outer surfaces of two sides of the uniform temperature plate, such cooling structure adopts the existing module structure and volume of battery pack, meanwhile improving the heat dissipation effect of the battery pack, and reducing the battery temperature to a lower level than that of the existing wind cooling module, which is cost and time efficient with simple structure and simple procedure.

First claim

What is claimed is:

1 . A thermal management system of a battery pack, comprising a battery pack and a cooling device of the battery pack, the battery pack comprises a plurality of single batteries, characterized in that: the cooling device of the battery pack comprises cooling fins and uniform temperature plates, the uniform temperature plates are arranged between the batteries, the cooling fins are defined outside the batteries.

2 . The thermal management system of the battery pack according to claim 1 , characterized in that: the cooling fins are arranged on the batteries, and the cooling fins are arranged on surfaces of two sides along thickness direction of the batteries on the uniform temperature plate.

3 . The thermal management system of the battery pack according to claim 1 , characterized in that: the plurality of single batteries are transversely arranged in parallel arrangement along thickness direction, and the single batteries are arranged separately along the thickness direction, so that a gap existing between the single batteries is obtained to embed the uniform temperature plate therein.

4 . The thermal management system of the battery pack according to claim 1 , characterized in that: thermal conductive adhesive is provided between the single battery and the uniform temperature plate, and a bonding connection is achieved between the uniform temperature plate and the single battery through the thermal conductive adhesive.

5 . The thermal management system of the battery pack according to claim 1 , characterized in that: fins are arranged on the cooling fin which extend along thickness direction and are arranged along length direction, the fins are arranged separately, and a gap exists between the adjacent fins.

6 . The thermal management system of the battery pack according to claim 1 , characterized in that: the cooling fin and the uniform temperature plate cooperate with each other through a manner of welding, bonding or threaded connection.

7 . The thermal management system of the battery pack according to claim 1 , characterized in that: the uniform temperature plate is a hollow metal plate, an inner wall surface of the metal plate of the uniform temperature plate is capillarity structure, and a supporting structure is provided between the metal plates for structural strengthening.

8 . The thermal management system of the battery pack according to claim 7 , characterized in that: the capillarity structure is formed by welding or bonding on the inner surface of the metal plate, or machined on the inner surface of the metal plate.

9 . The thermal management system of the battery pack according to claim 8 , characterized in that: interior of the metal plate of the uniform temperature plate is filled with liquid working medium after being vacuumed.

10 . The thermal management system of the battery pack according to claim 1 , characterized in that: the battery pack also comprises an end plate arranged outside the single battery along thickness direction of the battery pack, structural adhesive is applied between the end plate and its adjacent single battery, and the end plate cooperate with the single battery through the structural adhesive.

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Qiu Zhijun
• You Ruobo

Classifications

• H01M10/6557

  arranged between the cells · CPC title

• H01M10/6551

  Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings · CPC title

• B60K2001/005

  the electric storage means · CPC title

• H01M10/625

  Vehicles · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title