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Current collector having built-in sealing means, and bipolar battery including such a collector

一种双极电池、集电体的技术，应用在电极集电体涂层、电极制造、密封材料等方向，能够解决双极电池故障等问题，达到电池有效、改进性能、能量密度大的效果

Inactive Publication Date: 2013-04-24
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

In fact, poor sealing causes bipolar battery failure

Method used

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  • Current collector having built-in sealing means, and bipolar battery including such a collector
  • Current collector having built-in sealing means, and bipolar battery including such a collector
  • Current collector having built-in sealing means, and bipolar battery including such a collector

Examples

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Embodiment Construction

[0080]exist figure 1 A Li-ion bipolar battery according to the prior art is presented in , as it is set forth in patent application WO03 / 047021.

[0081] This battery comprises in its upper part a conductive aluminum substrate (substrate, base material) 13 (positive terminal current collector) and is composed of a positive lithium intercalation material such as Li 1.04 mn 1.96 o 4 The fabricated active layer 14, and in its lower part comprises a conductive aluminum substrate 21 (the negative terminal current collector) and is composed of a positive lithium intercalation material such as Li 4 Ti 5 o 12 Fabricated active layer 20.

[0082] In this cell, a bipolar electrode 1 , also called a bipolar current collector, comprises a positive active layer 18 and a negative active layer 19 on either side of a conductive aluminum substrate 17 in the form of a plate.

[0083] The lower electrode 20 and the upper electrode 14 are separated from the bipolar electrode 1 by two separa...

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Abstract

The invention relates to bipolar lithium batteries. In order to improve the seal with respect to the electrolytes between adjacent electrochemical cells, the invention involves producing novel mixed electrode-supporting current collectors (10), in the form of a metal grate (101) or a raised metal sheet accommodated in a strip (100) made of an electrically insulating material, the periphery (100p) of which has the function of forming the sealing area.

Description

technical field [0001] The invention relates to the field of lithium electrochemical generators, which operate according to the intercalation (intercalation) or deintercalation, or in other words intercalation-deintercalation principle, of lithium in at least one electrode. [0002] More specifically, it relates to lithium electrochemical accumulators comprising at least one current collector (current collector, current collector) having a bipolar function, also known as bipolar cells: in such bipolar cells, in a Each opposing face of the electrode material supports a bipolar current collector, eg, having a cathode (positive electrode) supported by one face and an anode (negative electrode) supported by the other opposing face. [0003] The object of the present invention is to improve the sealing of electrochemical generators against electrolytes and, in particular, of bipolar cells against electrolytes in liquid form. Background technique [0004] The configuration of a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M4/58H01M4/66H01M4/74H01M4/04H01M10/0525H01M4/485H01M50/184H01M50/186
CPCH01M4/5825H01M4/667H01M4/66H01M2/26H01M10/0585H01M10/0525H01M4/0435H01M2/08H01M4/043H01M4/0404H01M4/485H01M4/745Y02E60/122H01M4/668H01M4/661H01M4/72H01M6/005H01M4/136H01M4/131Y10T29/4911Y02P70/50Y02E60/10H01M50/184H01M50/186H01M50/531
Inventor 玛丽安娜·沙米
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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