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SOC equalization control method in battery box system

A technology of balance control and battery management system, applied in charge balance circuit, arrangement of multiple synchronous batteries, battery circuit devices, etc., can solve the problem of poor SOC value balance effect, etc., to improve automatic balance performance and improve balance effect. Effect

Inactive Publication Date: 2019-01-01
SHENZHEN CLOU ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a SOC balance control method in the battery box system to solve the problem of poor SOC value balance in the battery box system of the existing energy storage system

Method used

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  • SOC equalization control method in battery box system
  • SOC equalization control method in battery box system
  • SOC equalization control method in battery box system

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention, and similar component numbers in the drawings represent similar components. Apparently, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] figure 1 An embodiment of the AGC frequency modulation energy storage system of the present invention is shown. In this embodiment, the AGC-based frequency modulation energy storage system includes an AGC control system layer, an energy storage monitoring system (EMS) layer, a high-voltage ring cage system layer, multiple medium-voltage tank system layers, an...

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Abstract

The invention discloses an SOC equalization control method in a battery box system. The SOC equalization control method comprises: an SOCij of a battery management system BMSij is obtained, wherein the battery management system BMSij is a jth battery management system BMS in an i-th battery box system, the i is larger than or equal to 1 and is less than or equal to M, the j is larger than or equalto 1 and is less than or equal to N, the M expresses the number of the battery box systems, and the N expresses the number of battery management systems in each battery box system; when a received power control command is not a full-power command, SOC values of the N battery management systems in the i-th battery box system are balanced according to a power equalization strategy in an SOCij performing box. According to the invention, the power equalization strategy in the box is performed automatically based on the SOC values, so that the equalization effect is improved and the equalized automatic performance is enhanced.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to an SOC balance control method in a battery box system. Background technique [0002] The existing AGC frequency modulation energy storage system includes multiple battery box systems, each battery box system includes multiple battery stacks, each battery stack has an independent battery management system BMS, due to the battery internal resistance of each battery stack , Inconsistencies in self-discharge capacity, differences in operating temperature ranges, etc. Therefore, after the AGC frequency modulation energy storage system has been in operation for a long time, the SOC values ​​​​of different battery management systems will vary. [0003] In view of this, it is necessary to provide an SOC balance control method that can ensure the balance of the SOC value in the battery box system. Contents of the invention [0004] The purpose of the present invention is to pro...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J3/32
CPCH02J3/32H02J7/0014
Inventor 但助兵王宇翔詹孟兴雷莹
Owner SHENZHEN CLOU ELECTRONICS
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