Battery pack thermal regulation device

Patent metadata

Field	Value
Publication number	US-2016276718-A1
Application number	US-201415022426-A
Country	US
Kind code	A1
Filing date	Sep 11, 2014
Priority date	Sep 18, 2013
Publication date	Sep 22, 2016
Grant date	—

Abstract

The invention relates to a device for the thermal regulation of a motor vehicle battery pack ( 1 ) comprising at least one battery ( 5 ) contained in a housing ( 3 ), the thermal regulation device comprising: at least one heat exchanger ( 9 ) in contact with the battery ( 5 ), at least one elastic element ( 15 ) arranged in the bottom ( 14 ) of the housing ( 3 ) so as to hold the heat exchanger ( 9 ) against the battery ( 5 ). An insulator ( 13 ) is interposed between the elastic element ( 15 ) and the heat exchanger ( 9 ).

First claim

1 . A thermal regulation device for a battery pack for a motor vehicle comprising at least one battery contained in a casing, the thermal regulation device comprising:
at least one heat exchanger in contact with the battery; and at least one elastic element arranged in the bottom of the casing in order to hold the heat exchanger against the battery, wherein an insulant is interposed between the elastic element and the heat exchanger.

2 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 1 , wherein the insulant is a molded plastic component.

3 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 2 , wherein the molded plastic component is made of polypropylene or polyamide reinforced with glass fiber.

4 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 2 , in which the heat exchanger has pipes, wherein the insulant is attached to each pipe of the heat exchanger.

5 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 4 , wherein the insulant covers the surface of the pipe opposite the surface that is in contact with the battery.

6 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 4 , wherein the molded plastic component has elastic hooks for attaching the molded plastic component to the pipe.

7 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 1 , wherein the insulant has spacers used to additional air-gap thermal insulation for the pipe.

8 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 7 , wherein the spacers of the insulant include longitudinal ribs.

9 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 1 , wherein the elastic element includes at least one spring component made of cut and folded sheet metal.

10 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 9 , wherein the spring component has a longitudinal rectangular shape with a U-shaped cross section, comprising a plurality of tapered support legs, the tops of which are parallel to the width of the spring component and form stiffening cross members.

11 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 9 , wherein the U-shaped free extremities of the spring component are folded towards one another to cooperate with the matching lateral grooves in the molded plastic component, thereby enabling a mechanical connection between the spring component and the molded plastic component.

12 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 1 , wherein the cross section of the spring component is tapered.

13 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 1 , wherein the spring component has a longitudinal central trunk with a plurality of elastic support legs oriented towards the bottom of the casing of the battery pack.

14 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 13 , wherein the elastic support legs of the spring component are staggered on either side of the central trunk of said spring component.

15 . The thermal regulation device for a battery pack for a motor vehicle as claimed in claim 1 , wherein the spring component includes assembly means to cooperate with the complementary assembly means of the molded plastic component to which said spring component is attached.

16 . A battery pack for a motor vehicle comprising:
a battery positioned in a casing; and a thermal regulation device as claimed in claim 1 .

Assignees

• Valeo Systems Thermiques
• Valeo Systemes Thermiques

Inventors

• Prevost Jean-Christophe
• Bireau Fabien
• Marchadier Xavier
• Mahe Christian
• Tournois Rèmi

Classifications

• B60L2240/545

  Temperature · CPC title

• B60L3/0046

  relating to electric energy storage systems, e.g. batteries or capacitors · CPC title

• B60K2001/005

  the electric storage means · CPC title

• B60L58/21

  having the same nominal voltage · CPC title

• B60L58/24

  for controlling the temperature of batteries · CPC title