Lithium battery and formation method thereof

A formation method and lithium battery technology, applied in the direction of lithium storage batteries, secondary batteries, electrochemical generators, etc., can solve the problems of long formation time and too high requirements for battery model limitations, and achieve short formation time, good formation effect, The effect of reducing the cost of formation

Pending Publication Date: 2022-04-22
SHENZHEN TOPBAND NEW ENERGY CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

For the voltage-limited formation method, the limitation of the battery model is too high, the voltage cut-off is not suitable for batteries of various material systems, and the formation time is too long

Method used

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  • Lithium battery and formation method thereof
  • Lithium battery and formation method thereof
  • Lithium battery and formation method thereof

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Embodiment Construction

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] In order to solve the problems existing in the existing lithium battery formation method, the present invention provides a lithium battery formation method with accurate and reliable measurement, simple operation and low investment cost.

[0036] refer to figure 1 , is a schematic flow chart of an alternative embodiment of the lithium battery formation method provided by the present invention.

[0037] Specifically, such as figure 1 Shown, this lithium battery formation method comprises the following steps:

[0038] Step S101 , charging the lithium battery to the first formation stage under the first charging condition.

[0039] Step S102, standing still for a first preset time period.

[0040] Step S103 , af...

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Abstract

The invention relates to a lithium battery and a formation method thereof. The formation method comprises the following steps: charging the lithium battery to a first formation stage under a first charging condition; standing for a first preset time period; after standing for a first preset time period, charging the lithium battery to a second formation stage under a second charging condition; standing for a second preset time period; after standing for a second preset time period, charging the lithium battery to a third formation stage under a third charging condition; standing for a third preset time period; and after standing for a third preset time period, charging the lithium battery to a fourth formation stage under a fourth charging condition. Current charging formation is directly adopted, negative pressure vacuumizing, hot pressing or voltage limiting formation does not need to be carried out on the lithium battery, the formation cost is greatly reduced, the method can be suitable for lithium batteries of various models, the formation time is short, the formation effect is good, and the universality is high.

Description

technical field [0001] The invention relates to the technical field of battery formation, and more specifically, to a lithium battery and a formation method thereof. Background technique [0002] The current lithium battery formation methods mainly include: [0003] 1. Negative pressure formation method: vacuumize the cell to a certain pressure P1 before formation, and then charge it with a small current to a certain voltage. After the pressure is released, vacuumize it to a certain P2 (P2<P1), and then carry out a small current Charge to a certain voltage to complete the formation. [0004] 2. Hot-pressing formation method: After applying a certain pressure P1 to the battery cell, then heating the battery cell to a certain temperature, then charging it with a certain small current to a certain voltage, and finally releasing the pressure and cooling down to complete the formation. [0005] 3. Voltage-limited formation method: charge the cell with a certain current, then...

Claims

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Application Information

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IPC IPC(8): H01M10/052H01M10/058H01M10/44
CPCH01M10/052H01M10/058H01M10/44H01M10/446Y02E60/10Y02P70/50
Inventor 齐朗郑鹏朱强唐少青施朝忠温世森
Owner SHENZHEN TOPBAND NEW ENERGY CO LTD
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