Method for solving gas expansion failure of lithium titanate battery

A lithium titanate battery, flatulence technology, which is applied in the direction of electrical components, secondary batteries, secondary battery charging/discharging, etc., can solve the problems of flatulence failure of lithium titanate batteries, low probability of defective products, and high probability of defective products. , to achieve the effect of fast charging capability, low probability of defective products, and short processing cycle
CN105449301AActive Publication Date: 2016-03-30DONGFENG COMML VEHICLE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DONGFENG COMML VEHICLE CO LTD
Publication Date
2016-03-30

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Abstract

The invention provides a method for solving gas expansion failure of a lithium titanate battery. The method comprises a formation process and an aging process; the formation process comprises the following steps: firstly, charging for 2 to 20 hours in a constant-current mode by current of 0.01C to 0.1C, charging for 1 to 7 hours in a constant-current mode by current of 0.1C to 0.2C and charging for 0.5 to 1 hour in a constant-current mode by current of 0.2C to 0.5C; secondly, discharging for 3 hours in a constant-current mode by current of 0.5C to 1C, then charging for 3 hours and discharging for 3 hours in a constant-current and constant-voltage mode by current of 0.5C, and repeating the steps of charging for 3 hours and discharging for 3 hours in a constant-current and constant-voltage mode by current of 0.5Cfor 3 to 6 times; and finally, charging for 2 hours and discharging for 2 hours in a constant-current and constant-voltage mode by current of 1C, and repeating final two steps for 3 to 6 times. With such a design, batteries are prevented from expanding, the discharge power of the batteries is increased and a quick charge capacity and good service are realized. The production probability of defective products is low and the process cycle is short.
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Description

technical field

[0001] The invention belongs to the field of battery manufacturing, and in particular relates to a method for solving gas failure of a lithium titanate battery, which is suitable for preventing battery gas, improving battery discharge power, realizing fast charging capability and good service life. Background technique

[0002] Lithium-ion batteries have the advantages of light weight, high specific energy, high working voltage, long life, and relatively low self-discharge. At the same time, due to the relatively small working current of mobile electronic products, general lithium-ion batteries can meet the requirements, so since commercialization Lithium-ion batteries have been rapidly promoted in the field of mobile electronics.

[0003] At present, there are many kinds of negative electrode materials for lithium-ion batteries. According to the functional requirements of batteries, the most commonly used negative electrode materials are natural graphite, ar...

Claims

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