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Battery charging method and system

A charging method and charging system technology, applied in the field of battery charging method and system, can solve the problems of reducing the charging speed of the battery, and achieve the effects of increasing the charging speed, avoiding lithium precipitation, and reducing capacity attenuation

Pending Publication Date: 2022-04-05
SHANGHAI RUIPU ENERGY CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that in the process of charging with a constant current, the polarization accumulation phenomenon of the battery becomes more and more serious, which reduces the charging speed of the battery. The key to fast and efficient charging

Method used

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  • Battery charging method and system
  • Battery charging method and system

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] The embodiment of the invention discloses a battery charging method, such as figure 1 As shown, it includes the following steps: Step S1: Set the charging parameters according to the pulse cycle of the battery, and use the charging parameters to pulse charge the battery until the battery reaches the predetermined charging time or the battery voltage reaches the charging cut-off voltage.

[0039] Set N groups of charging parameters according to N pulse periods, the charging parameters include puls...

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Abstract

The invention provides a battery charging method and system, and the method comprises the following steps: S1, setting a charging parameter according to the pulse period of a battery, and carrying out the pulse charging of the battery through the charging parameter; s2, setting a discharge parameter according to the pulse period of the battery, and performing pulse discharge on the battery by using the discharge parameter; and S3, circularly executing the pulse charging in the step S1 and the pulse discharging in the step S2 until the charging amount of the battery reaches a predetermined target. According to the current charging mode, the charging speed can be increased, lithium precipitation, especially lithium precipitation in a low SOC section, can be avoided, battery polarization can be effectively controlled, and capacity attenuation in the battery charging process can be reduced.

Description

technical field [0001] The present invention relates to the technical field of battery charging, in particular to a battery charging method and system. Background technique [0002] At present, the most widely used charging technology is constant current and constant voltage charging. That is, after the battery is charged to the cut-off voltage with a constant current, it is then charged at a constant voltage at the cut-off voltage. However, due to the internal resistance of the battery itself, constant current and constant voltage charging will cause the battery polarization to accumulate continuously. Battery polarization refers to the phenomenon that the battery has a current passing through it, which makes the battery deviate from the equilibrium electrode potential. Battery polarization affects how quickly a battery charges. [0003] The Chinese invention patent document with the publication number CN113571790A discloses a charging method for a lithium-ion battery. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H02J7/00
CPCY02E60/10
Inventor 曹辉聂荣荣侯敏刘婵
Owner SHANGHAI RUIPU ENERGY CO LTD
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