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Bipolar electrode, laminated battery and preparation method of laminated battery

A bipolar electrode and battery technology, applied in the direction of electrode manufacturing, primary batteries, active material electrodes, etc., can solve the problems of reducing the service life of laminated batteries, reducing the energy density of laminated batteries, and failure of laminated batteries , to achieve the effects of avoiding micro-short circuit, good high-current discharge characteristics, and reducing processing costs

Active Publication Date: 2022-02-25
深圳市睿赛新能源科技有限公司 +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, on the one hand, the arrangement of the tabs occupies the positions of the positive and negative electrodes, which reduces the energy density of the stacked battery; high, and it is easy to cause the stacked battery to fail due to the tab falling off, reducing the service life of the stacked battery. Therefore, there is an urgent need for a bipolar electrode, a stacked battery and a preparation method for the stacked battery to solve The above technical issues

Method used

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  • Bipolar electrode, laminated battery and preparation method of laminated battery
  • Bipolar electrode, laminated battery and preparation method of laminated battery
  • Bipolar electrode, laminated battery and preparation method of laminated battery

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Embodiment Construction

[0054] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings but not all of them.

[0055] Some orientation words are limited in the present invention, and under the situation of not making contrary description, the orientation words used are as " upper ", " lower ", " left ", " right ", " inner ", " outer " these orientation words It is adopted for easy understanding, and thus does not constitute a limitation to the protection scope of the present invention.

[0056]In the present invention, unless otherwise clearly specified and limited, a first feature being...

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Abstract

The invention relates to a bipolar electrode, a laminated battery and a preparation method of the laminated battery, the bipolar electrode comprises a flexible conductive substrate, an insulating strip and an insulating layer, the flexible conductive substrate has a first surface and a second surface which are oppositely arranged, each of the first surface and the second surface comprises a positive electrode region, a bending region and a negative electrode region which are sequentially arranged, the positive electrode region is coated with a positive electrode active material, and the negative electrode region is coated with a negative electrode active material; the positive electrode region of the first surface is opposite to the positive electrode region of the second surface, and the negative electrode region of the first surface is opposite to the negative electrode region of the second surface; the bending region of the first surface is opposite to the bending region of the second surface; the bending region can be bent, so that the flexible conductive substrate is bent from an unfolded state to a folded state, and the folded state is that the positive electrode region and the negative electrode region are arranged oppositely; an insulating strip is arranged in the bending region; and the insulating layer is interposed between the positive electrode active material and the negative electrode active material. The bipolar electrode is simple in processing technology and low in processing cost, the energy density of the laminated battery is improved, and the service life of the laminated battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a bipolar electrode, a stacked battery and a preparation method for the stacked battery. Background technique [0002] In the prior art, a stacked battery includes a separator, a positive electrode sheet and a negative electrode sheet. The positive electrode sheet and the negative electrode sheet are stacked alternately. The separator is arranged between the positive electrode sheet and the negative electrode sheet to form a battery cell with the positive electrode sheet and the negative electrode sheet. Both the positive electrode sheet and the negative electrode sheet need to be connected with tabs, and two adjacent tabs are connected to realize the series connection of the battery cells. [0003] However, on the one hand, the arrangement of the tabs occupies the positions of the positive and negative electrodes, which reduces the energy density of the stacked battery; high,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/70H01M4/02H01M4/04H01M6/00H01M10/04
CPCH01M4/70H01M4/02H01M4/04H01M6/00H01M10/045Y02P70/50Y02E60/10
Inventor 朱希平兰丽菊
Owner 深圳市睿赛新能源科技有限公司
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