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Production method of chargeable lithium polymer battery for simultaneously low-temperature discharge and heavy-current discharge

A high-current discharge and production method technology, which is applied in the direction of secondary batteries, electrochemical generators, circuits, etc., can solve the problem that military equipment is not well used, and achieve the goal of increasing discharge power and service life and reducing weight Effect

Inactive Publication Date: 2010-01-13
江西中投新能源有限公司
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AI Technical Summary

Problems solved by technology

[0002] In the existing low-temperature lithium polymer rechargeable battery manufacturing technology and the high-current discharge lithium polymer rechargeable battery manufacturing technology that have been published or used, the products produced often can only highlight one side, and there is no way to simultaneously operate at low temperature. It is used under the conditions of discharge and high current discharge, so it is not used well in some military equipment.

Method used

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  • Production method of chargeable lithium polymer battery for simultaneously low-temperature discharge and heavy-current discharge
  • Production method of chargeable lithium polymer battery for simultaneously low-temperature discharge and heavy-current discharge
  • Production method of chargeable lithium polymer battery for simultaneously low-temperature discharge and heavy-current discharge

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Embodiment Construction

[0058] A method for producing a lithium polymer rechargeable battery for both low-temperature discharge and high-current discharge. Specifically adopt following technical scheme, it comprises the steps:

[0059] 1. Preparation of positive electrode:

[0060] A. After mixing the raw materials according to the following weight ratio, dissolve the polyvinylidene fluoride binder with N-methylpyrrolidone as the colloidal masterbatch to prepare the positive electrode slurry,

[0061]B. The powder is obtained according to the following weight ratio, wherein the doped and modified lithium manganate through secondary purification accounts for 6.8 parts and nickel-cobalt-manganese oxide accounts for 3 parts, and the above-mentioned mixture accounts for the total powder weight: 97.4%, Conductive carbon black accounts for 2.1% of the total powder weight, and nanometer ultra-long carbon fiber accounts for 0.5% of the total powder weight.

[0062] C. First disperse and mix the above powde...

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Abstract

The invention relates to a production method of a chargeable battery for simultaneously low-temperature discharge and heavy-current discharge. In the method, the characteristics of materials, excellent low temperature performance and matching means between lithium manganate and low-temperature electrolyte and excellent electric conduction performance of nano ultralong carbon fibers are utilized to satisfy requirements on low temperature; a technical processing method, a structure with double-rolling cores and double pole lugs as well as nickel-plated copper lugs are utilized to reduce the internal resistance of the battery; and the advantages and disadvantages of all materials are balanced so that the battery produced by the method can simultaneously satisfy low-temperature discharge and heavy-current discharge as required by arsenal equipment. Therefore, the chargeable battery with both of the advantages can be used for starting equipment well in arctic and antarctic areas or in the high altitude of 5000m.

Description

technical field [0001] The invention relates to a lithium polymer rechargeable battery and a production method. technical background [0002] In the existing low-temperature lithium polymer rechargeable battery manufacturing technology and the high-current discharge lithium polymer rechargeable battery manufacturing technology that have been published or used, the products produced often can only highlight one side, and there is no way to simultaneously operate at low temperature. It is used under the conditions of discharge and high current discharge, so it is not used well in some military equipment. Contents of the invention [0003] The object of the present invention is to provide a method for producing a lithium polymer rechargeable battery that is simultaneously used for low-temperature discharge and high-current discharge. [0004] The technical scheme that the present invention specifically adopts comprises the steps: [0005] 1. Preparation of positive electrod...

Claims

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Application Information

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IPC IPC(8): H01M10/38
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 梁剑雄
Owner 江西中投新能源有限公司
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