A laminated secondary battery based on cross-stacking and its preparation method

A secondary battery, laminated technology, applied in the direction of secondary battery manufacturing, secondary batteries, battery components, etc.

Active Publication Date: 2021-06-08
李嫊罗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems existing in the above-mentioned technologies. The present invention provides a lamination based on cross-stacking in which a complete battery electrode assembly is formed by adding unipolar sheets between unipolar groups and unipolar groups. Type secondary battery, the battery can reduce the situation that the battery performance does not meet the requirements due to the bad unipolar sheet

Method used

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  • A laminated secondary battery based on cross-stacking and its preparation method
  • A laminated secondary battery based on cross-stacking and its preparation method
  • A laminated secondary battery based on cross-stacking and its preparation method

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Embodiment Construction

[0033] The advantages, features and implementation methods of the present invention can be seen in the specific embodiments in the detailed description of the drawings. However, it does not mean that the present invention is not limited to the embodiments mentioned below, and will be presented in various forms. The embodiments mentioned herein are to make the present invention more complete, and also to make other persons skilled in the art more clearly understand the technical scope of the present invention. The present invention is based on the scope of the contents covered by the claims.

[0034] The terminology used in this specification is only for the purpose of describing the embodiments, and does not mean that the present invention is limited to the content involved in this document. Even if not stated separately, the original electrode group referred to in the present invention may be single or multiple. "Include" used in this specification does not exclude the exis...

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Abstract

The invention discloses a laminated secondary battery based on cross-stacking and a preparation method thereof. The disclosed secondary battery is formed by cross-stacking unipolar groups and positive and negative unipolar sheets, and the unipolar groups are integrally formed. It effectively reduces the situation that the performance of the battery does not meet the requirements due to poor positive and negative unipolar sheets. Manufacturing laminated secondary batteries according to the preparation method provided by the present invention can effectively solve existing problems. The monopole group and pole pieces are alternately stacked. The production process of the monopole group and pole pieces is relatively simple. During this process, defective products can be effectively screened out in advance, and the frequency of rework can be significantly reduced. Moreover, the invention adopts the method of stacking the monopole group and the monopole sheet, which can effectively reduce the initial investment cost of the monopole group and the monopole sheet manufacturing equipment.

Description

technical field [0001] The invention relates to a secondary battery and a preparation method thereof, in particular to a cross-stacked secondary battery and a preparation method thereof. Background technique [0002] Secondary batteries, also known as rechargeable batteries or storage batteries, refer to batteries that can be activated by charging the active material after the battery is discharged and continue to be used. Using the reversibility of chemical reactions, a new battery can be assembled, that is, after a chemical reaction is converted into electrical energy, the chemical system can be repaired with electrical energy, and then converted into electrical energy by chemical reaction, so it is called a secondary battery (rechargeable battery). Rechargeable Battery). The main rechargeable batteries on the market are "nickel metal hydride", "nickel cadmium", "lead acid (lead battery)", "lithium ion (including lithium battery and lithium ion polymer battery)" and so on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04
CPCH01M10/0472H01M10/0463Y02E60/10Y02P70/50H01M10/0413H01M10/0436H01M10/045H01M10/0459H01M10/049H01M50/46
Inventor 李嫊罗
Owner 李嫊罗
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