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Non-metal case lithium ion battery

A lithium-ion battery, non-metallic technology, applied in the direction of secondary batteries, battery pack parts, circuits, etc., can solve the problems of difficult recycling, low pass rate, etc., to ensure safety performance, low manufacturing cost, and good reproducibility Effect

Inactive Publication Date: 2009-07-29
桐乡市众胜能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of the above-mentioned metal-shell lithium-ion battery and polymer lithium-ion battery in production cost, low pass rate, and difficulty in recycling, the inventors of the present invention have carried out extensive research in this field, and adopted non-metallic shells as lithium batteries. ion battery shell, it was found that the non-metal shell lithium ion battery has good stability, on the one hand has good electrochemical performance, on the other hand has good safety performance; and the production cost of the battery shell is low, energy consumption is less, Recycling is very convenient, and on the other hand, the color of the appearance can be adjusted as needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A polyvinyl chloride shell with titanium dioxide filler is used as the shell of the lithium-ion battery, and the model is cylindrical 18650 (18 mm in diameter and 65 mm in height). The composition of the battery cell is the same as that of Comparative Example 1. Put the battery core into the above-mentioned cylindrical 18650 plastic shell, and add a PTC terminal with safety performance, then add electrolyte, form, shelve, and seal. The appearance of the battery is opaque white.

[0021] Safety test: The above-mentioned fully charged cylindrical 18650 lithium-ion battery was placed in a hot box at 80°C, and it was found that the battery was obviously deformed after 1 hour; no explosion occurred after 10 hours.

[0022] The electrochemical performance test is the same as that of Comparative Example 1. The results showed that after 500 cycles, the same as Comparative Example 1, the residual capacity was 92%.

Embodiment 2

[0028] A polypropylene shell with glass fiber reinforcement and blue masterbatch is used as the shell of the lithium-ion battery, the model is square 356080 (35mm wide, 60mm long, and 80mm high). The composition of the battery cell is the same as that of Comparative Example 2. Put the battery core into the above-mentioned square 356080 plastic shell, then add electrolyte, form, set aside, and seal. The appearance of the battery is blue.

[0029] Safety test: The above-mentioned fully charged cylindrical 18650 lithium-ion battery was placed in a hot box at 80°C, and it was found that the battery was slightly deformed after 0.5 hours; after 10 hours, no explosion occurred.

[0030] The electrochemical performance test is the same as that of Comparative Example 1. The results showed that after 500 cycles, the same as Comparative Example 2, the residual capacity was 87%.

Embodiment 3

[0036] A blend shell added with polysiloxane and poly(ethylene terephthalate) was used as the shell of the lithium-ion battery, and the model was square 045090 (thickness: 4.0mm, width: 50mm, length: 90mm). The composition of the battery cell is the same as that of Comparative Example 3. Put the battery core into the above-mentioned square 356080 plastic shell, then add electrolyte, form, set aside, and seal. It was found that the qualified rate of the product was 99%, obviously higher than that of Comparative Example 3, and the appearance of the battery was milky white.

[0037] Safety test: The above-mentioned fully charged square 045090 lithium-ion battery was placed in a hot box at 80°C, and it was found that the battery was slightly deformed after 0.5 hours; after 10 hours, no explosion occurred.

[0038] The electrochemical performance test is the same as that of Comparative Example 3. The results showed that after 500 cycles, the same as Comparative Example 3, the res...

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Abstract

The invention relates to the technique field of battery, in particular to a nonmetallic shell lithium ion battery which comprises a battery cell and a nonmetallic shell. The nonmetallic shell ensures the safety performance and electrochemical property of the lithium ion battery effectively; in addition, the nonmetallic shell lithium ion battery has the advantages of low manufacturing cost, convenient recycling, little energy consumption, various apparent colors which can be adjusted according to actual needs, strong operability, good repeatability and products with stable quality and good performance.

Description

technical field [0001] The invention belongs to the technical field of batteries, and relates to a lithium-ion battery. More specifically, the invention relates to a non-metallic lithium-ion battery. The non-metallic lithium-ion battery contains a battery cell and a non-metallic shell. [0002] The non-metal shell effectively guarantees the safety performance and electrochemical performance of the lithium-ion battery; in addition, the non-metal shell lithium-ion battery has low manufacturing cost, is convenient to recycle, consumes less energy, and has various appearance colors. The invention has strong operability and good reproducibility, and the obtained product has stable quality and excellent performance. Background technique [0003] As we all know, lithium-ion batteries and polymer lithium-ion batteries have the characteristics of high energy density, high specific power, good cycle performance, no memory effect, and no pollution (see: Wu Yuping, Dai Xiaobing, Ma Junq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/40H01M50/121
CPCY02E60/12Y02E60/10
Inventor 张汉平蒋曰超钟传来金祖强晋雁吴宇平
Owner 桐乡市众胜能源科技有限公司
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