Pouch Battery Cell Assembly for Traction Battery

Patent metadata

Field	Value
Publication number	US-2018114955-A1
Application number	US-201615298517-A
Country	US
Kind code	A1
Filing date	Oct 20, 2016
Priority date	Oct 20, 2016
Publication date	Apr 26, 2018
Grant date	—

Abstract

A pouch battery cell assembly for a traction battery includes a housing, a first intermediate terminal member, and a first terminal tab. The housing defines a cavity. The first intermediate terminal member is disposed at least partially within the housing and defines an access port open to an exterior of the housing and the cavity which may be sized for electrolyte injection. The first terminal tab is embedded within the first intermediate terminal member. A pressure sensitive release mechanism may be disposed within the access port to selectively vent gases from the cavity. A second intermediate terminal member may be at least partially disposed within the housing and a second terminal tab may be embedded within the second intermediate terminal member.

First claim

What is claimed is:

1 . A pouch battery cell assembly for a traction battery comprising:
a housing defining a cavity; a first intermediate terminal member disposed at least partially within the housing and defining an access port open to an exterior of the housing and the cavity; and a first terminal tab embedded within the first intermediate terminal member.

2 . The assembly of claim 1 further comprising a pressure sensitive release mechanism disposed within the access port to selectively vent gases from the cavity.

3 . The assembly of claim 1 further comprising a second intermediate terminal member at least partially disposed within the housing and a second terminal tab embedded within the second intermediate terminal member.

4 . The assembly of claim 3 , wherein the first intermediate terminal member and the second intermediate terminal member are a single component.

5 . The assembly of claim 1 , wherein the access port is sized for venting gases from the cavity.

6 . The assembly of claim 1 , wherein the access port is sized to receive electrolyte injection to deliver electrolyte within the cavity.

7 . The assembly of claim 1 further comprising a seal between the first intermediate terminal member and the housing.

8 . A pouch battery cell assembly comprising:
a housing defining a cavity; an intermediate terminal structure at least partially disposed within the housing, including first and second members, and including a central portion connecting the members and defining an access port open to an exterior of the housing and the cavity; and a pair of terminal tabs, one of each of the terminal tabs embedded within one of the members and extending from the cavity to a location external to the housing.

9 . The assembly of claim 8 , wherein the terminal tabs and the intermediate terminal structure are arranged with one another such that each of the terminal tabs is spaced equidistant from the access port.

10 . The assembly of claim 8 , wherein the intermediate terminal structure is injection molded.

11 . The assembly of claim 8 further comprising a vent mechanism disposed within the access port to selectively vent gases from the cavity.

12 . The assembly of claim 8 , wherein the access port is sized to receive electrolyte injection to deliver electrolyte within the cavity.

13 . The assembly of claim 8 , wherein each of the first and second members is almond shaped, tear-drop shaped, or elongated diamond shaped.

14 . The assembly of claim 8 , wherein the housing is made of a conformal polymer/aluminum laminate vacuum sealed.

15 . A vehicle comprising:
a traction battery to selectively power components of the vehicle and including an array of pouch battery cell assemblies each including
a housing defining a cavity,
an intermediate terminal structure at least partially disposed within the housing and defining an access port,
a pair of terminal tabs each embedded within the intermediate terminal structure,
wherein the intermediate terminal structure and the housing are arranged with one another such that the access port is open to the cavity and a location outside the housing.

16 . The vehicle of claim 15 , wherein the intermediate terminal structure comprises a first member injection molded to receive one of the pair of terminal tabs and a second member injection molded to receive another of the pair of terminal tabs.

17 . The vehicle of claim 15 further comprising a seal disposed between the intermediate terminal structure and the housing.

18 . The vehicle of claim 15 , wherein the intermediate terminal structure and the housing are further arranged with one another such that each of the pair of terminal tabs extends from the cavity to a location outside of the housing.

19 . The vehicle of claim 15 further comprising a vent mechanism disposed within the access port to selectively release gases from the cavity.

20 . The vehicle of claim 15 , wherein the housing is made of a conformal polymer/aluminum laminate vacuum sealed.

Assignees

• Ford Global Tech Llc

Inventors

• Robert Brian Joseph
• Drews Andrew Robert
• Karulkar Mohan

Classifications

• B60K1/04 Primary

  of the electric storage means for propulsion · CPC title

• H01M50/618

  Pressure control · CPC title

• H01M50/178

  for pouch or flexible bag cells · CPC title

• H01M50/105

  Pouches or flexible bags · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title