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Bipolar electrochemical battery with an improved casing

A chemical battery and electrochemical technology, applied in the field of pools, can solve the problems of heavy rigid shells and low specific energy of Li-ion batteries.

Inactive Publication Date: 2013-05-01
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Therefore, the rigid casing currently used may be heavy, and the resulting Li-ion battery also has a low specific energy

Method used

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  • Bipolar electrochemical battery with an improved casing
  • Bipolar electrochemical battery with an improved casing
  • Bipolar electrochemical battery with an improved casing

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Embodiment Construction

[0076] For clarity, the terms "conductive (electrically conductive)" and "nonconductive (non-conductive)" are used in terms of electrical conductivity.

[0077] Li-ion bipolar batteries according to the prior art have been figure 1 As shown in patent application WO03 / 047021, it has no housing.

[0078] The battery comprises in its upper part a conductive aluminum substrate 13 (positive terminal current collector) and a positive lithium insertion material (such as Li 1.04 mn 1.96 o 4) made of the active layer 14, and includes a conductive aluminum substrate 21 (negative terminal current collector) and a negative lithium intercalation material (such as Li 4 Ti 5 o 12 ) made of the active layer 20.

[0079] Inside the cell, a bipolar element 1 (also referred to as a bipolar current collector) with bipolar electrodes 10 on either side of a conductive aluminum substrate 17 in the form of plates comprises a positive active layer 18 and a negative active Layer 16.

[0080] Th...

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Abstract

The invention relates to novel casing for a lithium bipolar electrochemical battery (A) including a bipolar element. According to the invention, the casing is formed by a composite material including a matrix and at least one porous reinforcement, the matrix of which includes at least one hardened polymer with which the porous reinforcement(s) are impregnated. The porous reinforcement(s) (4) and the hardened polymer(s) (5) encase the bipolar element (1) and maintain a predetermined pressure on either side of the latter, so as to maintain a predetermined contact between the components thereof.

Description

technical field [0001] The invention relates to the field of lithium electrochemical generators based on the principle of insertion or deinsertion of lithium, or in other words intercalation-deintercalation of lithium, in at least one electrode operate on principle. [0002] More specifically, it relates to lithium electrochemical cells comprising at least one current collector (current collector) with bipolar function, also known as bipolar cells: in such bipolar cells, the bipolar current collector (also known as a bipolar electrode) supports each of the electrode materials with different signs on its opposite faces, i.e. has a cathode (positive electrode) supported by one of the faces and a cathode (positive electrode) supported by the other of the opposite faces A supported anode (negative pole). [0003] The purpose of the present invention is to produce a new casing for electrochemical cells, more specifically a casing for bipolar batteries, and to replace casings of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M2/30H01M10/04H01M50/103H01M50/121H01M50/547H01M50/55H01M50/557
CPCH01M2/029H01M2/0212H01M2/18H01M2/1606H01M10/0418H01M2/0275H01M2/30H01M2/0207H01M2/0292H01M2/021H01M2004/029H01M2/0282Y02E60/12H01M10/0413H01M2/164H01M10/0525H01M2/0295H01M2002/0297Y02T10/7011H01M2/0285H01M10/0468H01M10/044H01M2/0267H01M2/0277H01M2/0262H01M2/0245Y02E60/10H01M50/557H01M50/258H01M50/131H01M50/124H01M50/1245H01M50/44Y02P70/50H01M50/547H01M50/103H01M50/121H01M50/55H01M50/116
Inventor 玛丽安娜·沙米利昂内尔·皮卡尔
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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