Module having a plurality of removable cells, battery comprising such a module and vehicle comprising such a battery

Patent metadata

Field	Value
Publication number	US-2016149256-A1
Application number	US-201414903498-A
Country	US
Kind code	A1
Filing date	Jul 4, 2014
Priority date	Jul 11, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

A module includes a plurality of flexible prismatic cells for storing electricity. Each cell includes, on at least one of the edges thereof, a flexible and flat electrical terminal. The cells are arranged against one another in order to form a stack and the electrical terminals of the cells are aligned in the stack. The flexible and flat terminals of a pair of two adjacent cells in the stack, one being a positive terminal and the other being a negative terminal, are folded between the two cells. Two spacers are inserted in the fold of each of the two flexible terminals, respectively. A compressive force is exerted on the stack of cells such that at least a portion of the two flexible terminals are compressed against one another between the two spacers.

First claim

1 - 9 . (canceled)

10 . A module, comprising:
a plurality of flexible prismatic cells for storing electricity, each cell comprising, on at least one of the edges thereof, a flexible and flat electrical terminal, the cells being arranged against one another in order to form a stack, the electrical terminals of the cells being aligned in the stack, wherein the flexible and flat terminals of a pair of two adjacent cells in the stack, one being a positive terminal and the other being a negative terminal, are folded between said two cells, two spacers are inserted in the fold of each of said two flexible terminals, respectively, and the module includes means for exerting a compressive force of the stack of cells disposed so as to compress at least a portion of said two flexible terminals against one another between said two spacers.

11 . The module as claimed in claim 10 , wherein each prismatic cell comprises a positive terminal and a negative terminal disposed on opposite edges of said cell, the cells being disposed in the stack such that each pair of adjacent cells has a positive terminal and a negative terminal compressed at least in part against one another between two spacers.

12 . The module as claimed in claim 10 , wherein the negative terminal of a first cell of the stack is connected to a negative terminal of said module, and the positive terminal of a last cell of the stack is connected to a positive terminal of said module.

13 . The module as claimed in claim 11 , wherein the means for exerting the compressive force include:
at least one clamp, and at least one spacer made of an electrically insulating material disposed between two of the cells in order to transmit the compressive force to the stack of cells as a whole.

14 . The module as claimed in claim 13 , wherein the clamp is made at least in part of a deformable material, such that a restoring force, exerted by the material in order to return the clamp to a starting form, compresses the stack.

15 . The module as claimed in claim 10 , wherein the spacers are made at least in part of a material having an increased resistance to compression.

16 . The module as claimed in claim 10 , wherein the means for exerting the compressive force include a receptacle containing the stack of cells, a cover of said receptacle exerting, in a closed configuration of said receptacle, a compressive force on the stack.

17 . A battery, comprising:
at least one module as claimed in claim 10 .

18 . An electric or hybrid vehicle, comprising:
a battery as claimed in claim 17 .

Assignees

• Renault Sas
• Renault Sas

Inventors

• Leroux Thierry

Classifications

• B60L50/64

  Constructional details of batteries specially adapted for electric vehicles · CPC title

• H01M2220/20

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

• H01M10/0413

  Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes · CPC title

• H01M10/0468 Primary

  Compression means for stacks of electrodes and separators · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title