Polymer battery lug and surface processing method thereof

A technology of battery tabs and polymers, applied in battery pack parts, circuits, electrical components, etc., can solve the problems of unsatisfactory electrolyte resistance and HF resistance, low battery safety, etc., and achieve excellent electrolyte resistance and HF resistance, sealing performance, high melting point effect

Inactive Publication Date: 2010-03-10
深圳世纪新能源电池有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polymer battery tabs have unsatisfactory electrolyte and HF resistance, and the safety of the battery is not high.

Method used

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Effect test

Embodiment Construction

[0014] The present invention is further described below:

[0015] A polymer battery tab, including Ni, Al and insulating tape, characterized in that: the surface of the tab is coated with ammonium bifluoride, chromium oxide, sodium phosphate and boric acid, and its weight is respectively ammonium bifluoride: 3-3.5g , chromium oxide: 20-26g, sodium phosphate: 2-2.5g, boric acid: 0.4-0.6g.

[0016] The Ni is a nickel strip made of a nickel material with a purity of more than 99.5%, with a thickness of 0.1-0.3mm, a width of 2-20mm, and a length of 10-150mm.

[0017] The Al is a nickel strip made of an aluminum material with a purity of more than 99.5%, with a thickness of 0.1-0.3mm, a width of 2-20mm, and a length of 10-150mm.

[0018] The insulating tape is made of PP or PE, melting point: PE=120-125°C, PP=140-145°C, thickness: 0.1-0.3mm, width: 4-30mm, length: 4-30mm .

[0019] The total thickness of the tab is the thickness of the nickel strip plus the thickness of the insu...

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Abstract

The invention discloses a polymer battery lug and a surface processing method thereof, which comprises Ni, Al and insulating tape; the invention is characterized in that: the surface of the lug is coated with ammonium bifluoride, chromic oxide, sodium phosphate and boric acid; and the weight thereof are as follows respectively: 3 to 3.5g of ammonium bifluoride, 20 to 26g of chromic oxide, 2 to 2.5g of sodium phosphate and 0.4 to 0.6g of boric acid. The invention fundamentally solves the weakest link of electrolyte non-resistance of a normal lug, thus guaranteeing the long-term tightness of encapsulated cell in subsequent storage and use processes. The invention improves the safety of the battery and electric equipment.

Description

technical field [0001] The invention provides a polymer battery tab and a surface treatment method thereof. Background technique [0002] Rechargeable batteries are an important part of various portable electronic devices and communication devices, such as portable audio equipment, portable phones, camcorders and notebooks, etc., so the demand for rechargeable batteries that are small in size, light in weight and capable of charging and discharging continues to increase, thus These devices and devices are powered by batteries. However, the existing polymer battery tabs have unsatisfactory electrolyte and HF resistance, and the safety of the battery is not high. Contents of the invention [0003] The object of the present invention is to provide a polymer battery tab with good safety, good electrolyte resistance and HF resistance and its surface treatment method. [0004] The purpose of the present invention is achieved through the following technical solutions: [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M50/528H01M50/531
CPCY02E60/12Y02E60/10
Inventor 崔明刘才胜朱罗泉陈亚忠徐国强王明均
Owner 深圳世纪新能源电池有限公司
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