High-power cylindrical lithium ion battery and processing technology

A technology of lithium-ion battery and processing technology, which is applied in the direction of secondary battery, battery pack parts, battery box/coating, etc., which can solve problems such as internal corrosion, difficulty in electrolyte absorption, and complicated process of pole pieces, so as to reduce damage, Good for popularization and simple processing technology

Inactive Publication Date: 2021-12-03
DONGGUAN LILONG BATTERY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-power cylindrical lithium-ion battery and its processing technology to solve the problems in the above-mentioned background technology that it is easy to cause internal corrosion, the process is relatively complicated, and the pole piece is difficult to absorb the electrolyte.

Method used

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  • High-power cylindrical lithium ion battery and processing technology
  • High-power cylindrical lithium ion battery and processing technology
  • High-power cylindrical lithium ion battery and processing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Processing process of high power cylindrical lithium ion battery, including steps 1, ingredient; step two, coating; step three, roller pressure; step four, laser die; step five, wound assembly; step six, bottom Welding; step seven, roller groove; step eight, battery baking; step nine, liquid; Step 10, welding the cap; step eleven, chemical form;

[0033] In the above steps, the number of pieces of nano-grade lithium iron phosphate and 15 parts of microtoxium phosphate is mixed, and a positive electrode active material is made, and the number of parts by 80 parts is made of 80 parts. The active substance and 2 parts of the binder, 2 parts of the conductive agent were added to the vacuum stirring tank, and stirring was carried out using an ultrasonic stirring apparatus, and a positive electrode slurry was made; the weight of 80 parts was 80 parts of the negative electrode active substance, 2 parts. The binder and 2 parts of the conductive agent were added to the vacuum stirri...

Embodiment 2

[0045] Processing process of high power cylindrical lithium ion battery, including steps 1, ingredient; step two, coating; step three, roller pressure; step four, laser die; step five, wound assembly; step six, bottom Welding; step seven, roller groove; step eight, battery baking; step nine, liquid; Step 10, welding the cap; step eleven, chemical form;

[0046] Wherein said step a, the nanoscale lithium iron phosphate 4 parts by weight, respectively micrometric mixing lithium iron phosphate and 12 parts of a positive electrode active material, the weight of the parts are made of positive electrode 90 parts 5 parts of active substance and a binder, 5 parts of conductive agent added to the vacuum mixing tank, stirred by ultrasonic mixing equipment to prepare a positive electrode slurry; 90 parts by weight, respectively the negative electrode active material, 5 parts 5 parts of a binder and a conductive agent is added to the vacuum mixing tank, stirred by ultrasonic mixing equipment ...

Embodiment 3

[0058] Processing process of high power cylindrical lithium ion battery, including steps 1, ingredient; step two, coating; step three, roller pressure; step four, laser die; step five, wound assembly; step six, bottom Welding; step seven, roller groove; step eight, battery baking; step nine, liquid; Step 10, welding the cap; step eleven, chemical form;

[0059] Wherein said step a, the nanoscale parts by weight of lithium iron phosphate were 5 parts of lithium iron phosphate micron and mixing 8 parts of a positive electrode active material, the weight of the parts are made of positive electrode 95 parts 8 parts of active substance and a binder, 8 parts of a conductive agent were added to the vacuum mixing tank, stirred by ultrasonic mixing equipment to prepare a positive electrode slurry; 95 parts by weight respectively of the negative electrode active material, 8 parts 8 parts of a binder and a conductive agent is added to the negative electrode slurry was vacuum stirred tank, st...

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Abstract

The invention discloses a high-power cylindrical lithium ion battery and a processing technology. The high-power cylindrical lithium ion battery comprises a shell, an arc groove, a roll core, a positive pole current collector, a negative pole current collector, a positive pole elastic gasket, a negative pole elastic gasket, a positive pole cap and a negative pole cap. The processing technology comprises the following steps of: step 1, burdening; step 2, coating; step 3, rolling and slitting; step 4, laser die cutting; step 5, winding and assembling; step 6, bottom welding; step 7, groove rolling; step 8, battery cell baking; step 9, liquid injection; step 10, cap welding; and step 11, formation. The high-power cylindrical lithium ion battery comprises the shell, the arc groove, the roll core, the positive pole current collector, the negative pole current collector, the positive pole elastic gasket, the negative pole elastic gasket, the positive pole cap and the negative pole cap. The high-power cylindrical lithium ion battery is safe and reliable; the battery cell is stably fixed in the battery shell through cooperative use of the positive pole elastic gasket, the negative pole elastic gasket and the arc groove, and damage caused by collision between the battery cell and the battery shell due to vibration is prevented.

Description

Technical field [0001] The present invention relates to the field of battery technology, and is specifically a high power cylindrical lithium ion battery and a machining process. Background technique [0002] Lithium-ion battery has advantages such as high-proportioned energy, no memory effect, in recent years, high-power lithium-ion batteries belong to a segment of the lithium-ion battery, mainly used in drone, start power, hybrid vehicle , Power UPS and other fields; existing soft bag lithium ion batteries have obvious disadvantages for some environment for long-term high-temperature application scenarios, which is easy to cause internal corrosion due to sealing reasons, and so on due to sealing revenue, so it is much limited. The application; the existing cylindrical multi-poorer process is more complicated, low production efficiency, especially multi-poor eart, can not achieve large-scale automation production, and some manual processes need to be auxiliary to achieve, produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M10/0587H01M50/107H01M50/152H01M50/528H01M50/536
CPCH01M50/107H01M50/152H01M50/528H01M50/536H01M10/0525H01M10/0587Y02E60/10Y02P70/50
Inventor 韩永斌
Owner DONGGUAN LILONG BATTERY TECH CO LTD
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