Battery module charging and discharging control method

A charging and discharging control and battery module technology, which is applied in the direction of secondary battery charging/discharging, battery circuit devices, safety/protection battery circuits, etc., can solve problems such as dangerous use, user experience degradation, etc., to prolong service life and improve User experience, the effect of avoiding the use of the dangerous state of the battery

Active Publication Date: 2020-12-25
桑德新能源技术开发有限公司 +1
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Problems solved by technology

[0005] The invention solves the technical problem that the user experience declines after the battery is used for a long time and the battery is still dangerous to use when it has reached the scrapping period

Method used

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  • Battery module charging and discharging control method

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Embodiment Construction

[0018] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0019] This embodiment provides a charging and discharging control method for a battery module. Specifically, the use of the battery module is divided into a first stage and a second stage, and the first stage is prior to the second stage. In the first stage of battery module use, the SOC value is used as the judgment condition for charging and discharging, and in the second stage of battery module use, the extreme voltage of the single cell after equalization in the battery module is used as the charging and discharging condition. The judgment condition of whether to stop. It should be noted that in the prior art, during the use of the battery module, all the single cells in the battery module will be equalized. In theory, the voltage value of each cell should...

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Abstract

The invention relates to the technical field of battery charging and discharging control, in particular to a battery module charging and discharging control method, in order to solve the technical problem that the user experience of a battery is reduced after a long time of use and the battery is still in dangerous use even after the end-of-life is reached. In the battery module charging and discharging control method of the present invention, the SOC value is used as a condition for determining whether to stop charging and discharging in a first stage of use of the battery module, and the extreme value voltage of the cell after the equalization processing in the battery module is used as a condition for determining whether to stop charging and discharging in a second stage of use of the battery module, wherein the first stage is earlier than the second stage.

Description

technical field [0001] The invention relates to the technical field of battery charge and discharge control, in particular to a battery module charge and discharge control method. Background technique [0002] During the use of the lithium battery, the lithium battery is used in the form of a battery module, and the battery module includes a plurality of single cells. In the charging and discharging process of the lithium battery battery module, the control and management of the battery module is very critical. If it is not handled properly, it will easily cause problems such as overcharging, overdischarging or combustion explosion of the battery. Since the battery module is sensitive to temperature, voltage, over-current and over-discharge, all battery control boards are integrated with various protection circuits to prevent abnormal conditions, and the reasonable design of battery charging and discharging strategies through the control board will Greatly reduce the possib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44H02J7/00
CPCH02J7/0026H01M10/441H02J7/0013Y02E60/10
Inventor 李杨娄忠良
Owner 桑德新能源技术开发有限公司
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