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Battery balancing control device and method

A control method and battery equalization technology, which is applied to battery circuit devices, circuit devices, charge equalization circuits, etc., can solve problems such as low equalization accuracy and overcompensation of single batteries, and achieve an improved level of equalization and fine-tuning , the effect of improving the accuracy

Active Publication Date: 2020-03-17
威海凯瑞电气股份有限公司
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the technical problem of overcompensation phenomenon of single battery due to low balance accuracy of existing active equalization technology, and provides a battery equalization control device and method with high balance accuracy and capable of avoiding overcompensation phenomenon of single battery

Method used

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  • Battery balancing control device and method
  • Battery balancing control device and method
  • Battery balancing control device and method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the examples.

[0023] Such as figure 1 As shown, the battery balancing control device includes a single-chip microcomputer control unit 5, and the single-chip microcomputer control unit 5 is connected to a battery information detection unit, a bidirectional power output unit 4, a power conversion unit 6, a battery pack information upload unit 8 and a parameter storage unit 9 respectively. The battery information detection unit includes a voltage collection unit 1 , a battery pack current collection unit 2 , a single battery internal resistance collection unit 3 and a temperature detection unit 7 .

[0024] The voltage acquisition unit 1 is used to monitor the voltage of the battery pack and the voltage of the single battery, and provide a basic basis for the equalization of the battery pack.

[0025] The battery pack current acquisition unit 2 is used to monitor the charging and discharging curr...

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Abstract

The invention provides a battery equalization control device and method, and solves the technical problem that a single cell battery has an over-compensation phenomenon due to the low equalization accuracy in the existing active equalization technology. The battery equalization control device is provided with a single chip microcomputer control unit, a battery information detection unit and a bidirectional power output unit; the single chip microcomputer control unit is connected with the battery information detection unit and the bidirectional power output unit respectively; and the battery information detection unit is provided with a voltage acquisition unit, a battery pack current acquisition unit and a single battery internal resistance acquisition unit. The battery equalization control device provided by the invention is widely applied to the technical field of battery equalization.

Description

technical field [0001] The present invention relates to a balance control device and method, in particular to a battery balance control device and method. Background technique [0002] A single battery is limited by voltage and capacity. In practical applications, multiple single batteries are often connected in series or in parallel to form a battery pack. There are inconsistencies in the charge-discharge rate and capacity between the individual cells connected in series in the battery pack, resulting in overcharge or over-discharge of individual cells during the charging and discharging process, resulting in premature failure of the entire battery pack. enter the elimination period. Therefore, technologies of passive equalization and active equalization have emerged. [0003] The existing active equalization technology judges whether to equalize it according to the voltage of the single battery during the charging and discharging process; in fact, the voltage of the sing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0014
Inventor 杨彬张杰汤国威刘国锋罗晓龙
Owner 威海凯瑞电气股份有限公司
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