Battery cell venting system for electrified vehicle batteries

Patent metadata

Field	Value
Publication number	US-10707464-B2
Application number	US-201514859693-A
Country	US
Kind code	B2
Filing date	Sep 21, 2015
Priority date	Sep 21, 2015
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A battery cell according to an exemplary aspect of the present disclosure includes, among other things, a can assembly, an electrode assembly housed inside the can assembly and a venting system including a vent port and at least one of a vent tube inside the can assembly or a spacer plate mounted between the vent port and the electrode assembly.

First claim

What is claimed is:

1. A battery cell, comprising:
a can assembly;
an electrode assembly housed inside said can assembly; and
a venting system including a vent port, at least one of a vent tube extending completely inside said can assembly, and a spacer plate mounted between said vent port and said electrode assembly, wherein said spacer plate is spaced from and unconnected to said at least one vent tube,
wherein said spacer plate is mounted to an underside of a top plate of said can assembly.

2. The battery cell as recited in claim 1 , wherein said can assembly includes a casing and said top plate.

3. The battery cell as recited in claim 2 , wherein said vent tube is attached to an interior wall of said casing.

4. The battery cell as recited in claim 2 , wherein said vent tube is secured within a corner of said casing.

5. The battery cell as recited in claim 2 , wherein said vent tube includes a first height that is less than a second height of a wall of said casing.

6. The battery cell as recited in claim 2 , wherein said vent port is disposed in said top plate.

7. The battery cell as recited in claim 1 , wherein said vent tube establishes a flow pathway between different portions of said can assembly.

8. The battery cell as recited in claim 1 , wherein said spacer plate is an arched sheet of material.

9. The battery cell as recited in claim 1 , wherein at least one of said vent tube and said spacer plate includes a plurality of perforations.

10. The battery cell as recited in claim 1 , wherein said battery cell is a prismatic, lithium-ion cell.

11. The battery cell as recited in claim 1 , wherein said electrode assembly includes a jelly roll.

12. The battery cell as recited in claim 1 , wherein said vent port is covered with a membrane.

13. A battery cell, comprising:
a can assembly;
an electrode assembly housed inside said can assembly; and
a venting system including a vent port, at least one of a vent tube extending completely inside said can assembly, and a spacer plate mounted between said vent port and said electrode assembly, wherein said spacer plate is spaced from and unconnected to said at least one vent tube,
wherein said at least one vent tube includes a plurality of vent tubes mounted inside said can assembly and each establishing a flow pathway configured to communicate gaseous byproducts toward said vent port.

14. A battery cell, comprising:
a can assembly;
an electrode assembly housed inside said can assembly; and
a venting system including a vent port, at least one of a vent tube extending completely inside said can assembly, and a spacer plate mounted between said vent port and said electrode assembly, wherein said spacer plate is spaced from and unconnected to said at least one vent tube,
wherein said spacer plate includes a width that is less than a width of the electrode assembly.

15. A battery cell, comprising:
a can assembly;
a lithium-ion electrode assembly housed inside said can assembly; and
a venting system including:
a vent port;
a plurality of vent tubes mounted inside said can assembly and each establishing a vertical flow pathway configured to communicate gaseous byproducts toward said vent port; and
a spacer plate mounted between said vent port and said electrode assembly and establishing a lateral flow pathway for the gaseous byproducts.

Assignees

• Ford Global Tech Llc

Inventors

• Freiman Joseph F
• Chikkannanavar Satish B
• Boddakayala Bhaskara

Classifications

• H01M50/474

  characterised by their position inside the cells · CPC title

• H01M50/35 Primary

  Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages · CPC title

• H01M50/367 Primary

  Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems · CPC title

• H01M50/30 Primary

  Arrangements for facilitating escape of gases · CPC title

• H01M50/342

  Non-re-sealable arrangements · CPC title