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Laminated battery cell structure, composite pole piece belt and battery

A pole piece and cell technology, applied in the field of batteries, can solve the problems of large overall volume and affect the energy density of the battery, and achieve the effect of improving the energy density

Pending Publication Date: 2022-07-05
GEESUN AUTOMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All the pole pieces have tabs protruding and are connected in parallel externally. The overall volume is relatively large, which affects the overall energy density of the battery.

Method used

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  • Laminated battery cell structure, composite pole piece belt and battery
  • Laminated battery cell structure, composite pole piece belt and battery

Examples

Experimental program
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no. 2 example

[0048] see figure 2 , figure 2 It is a schematic structural diagram of the composite pole piece belt 20 provided by the second embodiment of the present invention.

[0049] The second embodiment of the present invention provides a composite pole piece strip 20 , which is used to fold to form the laminated cell structure 10 in the above-mentioned embodiment. The basic principle and the resulting technical effect are the same as the above-mentioned embodiment. , for a brief description, for the parts not mentioned in this embodiment, reference may be made to the corresponding content in the above-mentioned embodiments.

[0050] In the composite pole piece belt 20 , the plurality of first pole pieces 11 are sequentially arranged between the two diaphragms 13 .

[0051] A plurality of second pole pieces 12 are alternately arranged on the sides of the two diaphragms 13 respectively facing away from the first pole piece 11, and are all corresponding to one first pole piece 11. I...

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PUM

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Abstract

The invention discloses a laminated battery cell structure, a composite pole piece belt and a battery, and relates to the field of batteries. The laminated battery cell structure comprises a diaphragm, a plurality of first pole pieces and a plurality of second pole pieces, the first pole pieces and the second pole pieces are alternately stacked, and the diaphragms are positioned between the adjacent first pole pieces and second pole pieces so as to separate the first pole pieces from the second pole pieces. The first pole piece comprises two first active material layers and a first current collector located between the two first active material layers. The first pole piece further comprises a first connecting current collector, and the first connecting current collector is electrically connected with two adjacent first current collectors. The laminated cell structure, the composite pole piece belt and the battery all have the characteristics of compact structure and relatively high energy density.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular, to a laminated battery core structure, a composite pole piece belt and a battery. Background technique [0002] An existing battery cell structure such as a lithium battery is composed of a positive electrode sheet, a negative electrode sheet and a separator, and the positive electrode sheet and the negative electrode sheet are separated by the separator to form a cell structure. Its brother pole pieces all have pole ears protruding, and are connected in an external parallel way, and their overall volume is relatively large, which affects the overall energy density of the battery. [0003] In view of this, it is particularly important to develop and design a laminated cell structure, a composite pole strip and a battery that can solve the above-mentioned technical problems. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a laminated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/04H01M10/0525H01M50/54
CPCH01M10/058H01M50/54H01M10/0525H01M10/0459Y02E60/10Y02P70/50
Inventor 左龙龙阳如坤刘作才李攀攀
Owner GEESUN AUTOMATION TECH