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Dual multi-level power limit protection system based on frequency modulation energy storage system

A technology of power limitation and energy storage system, which is applied in the direction of safety/protection battery circuit, secondary battery repair/maintenance, arrangement of multiple synchronous batteries, etc. It can solve problems such as high maintenance cost, long maintenance time, and easy disconnection , to achieve the effect of reducing the number of manual maintenance, improving the stability of operation, reducing maintenance costs and the number of trips

Active Publication Date: 2022-06-03
SHENZHEN CLOU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a dual multi-level power limiting protection system based on a frequency modulation energy storage system to solve the technical problems of long maintenance time, high maintenance cost and easy tripping of the existing frequency modulation energy storage system

Method used

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  • Dual multi-level power limit protection system based on frequency modulation energy storage system
  • Dual multi-level power limit protection system based on frequency modulation energy storage system
  • Dual multi-level power limit protection system based on frequency modulation energy storage system

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Embodiment Construction

[0051] Further, the battery management system BMSij determines the target corresponding to the battery parameter in a plurality of preset alarm levels

[0052] On the basis of this embodiment, in other embodiments, a plurality of preset alarm levels include A alarm level, B alarm, etc.

[0054] Wherein, the waiting duration confirmation module 10 is used to time from the current moment, and confirm the target corresponding to the target alarm

[0055] In this embodiment, after the alarm is initially confirmed, verification is performed within the preset power limit waiting time to avoid

[0060] SOCi=(SOCi1+SOCi2+...+SOCij+...+SOCiN) / N (1).

[0062] Then SOC1=(SOC11+SOC12+SOC13+SOC14) / 4.

[0067] Then SOC=(SOC1+SOC2+SOC3+SOC4) / 4.

[0071] The present embodiment can perform synchronous power control on the entire battery box system layer, thereby improving the power limiting effect.

[0082] The battery management system of the present embodiment performs hierarchical power within ...

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Abstract

The invention discloses a dual multi-level power limiting protection system based on a frequency modulation energy storage system, which includes: a battery box system layer, which includes a plurality of battery box systems, each battery box system includes a plurality of battery management systems, battery management systems The system BMSij obtains the battery parameters, the battery parameters include SOCij, the battery management system BMSij determines the target alarm, and acquires and executes the preset alarm power limit strategy corresponding to the target alarm; the medium voltage box system layer includes multiple medium voltage box systems, Each medium voltage box system includes multiple energy storage converters and a centralized control device; the energy storage monitoring system layer, which includes an energy storage monitoring system; when the SOC exceeds A1, or when the SOC does not exceed A1 and the SOCi exceeds A2 , or when the SOCi does not exceed A2 and the SOCij exceeds A3, or when the SOCij does not exceed A3 and the SOCij exceeds A4, execute the preset power limit processing strategy.

Description

Dual multi-level power limiting protection system based on frequency modulation energy storage system technical field The present invention relates to the technical field of power battery, in particular to a kind of dual multi-level power based on frequency modulation energy storage system Limit protection system. Background technique [0002] The existing frequency modulation energy storage system is in the process of frequently and repeatedly charging and discharging the battery stack of the battery management system. During the process, especially in the final stage of charging or discharging, the battery parameters of the battery stack in the battery management system are The rate of change of the number is very fast, for example, the rate of change of the voltage is very fast, so it is prone to overvoltage or undervoltage, overcurrent and so on. [0003] In order to prevent the battery stack from being in overvoltage, undervoltage or overcurrent conditions, it is ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/42H01M10/44
CPCH02J7/0026H02J7/0077H02J7/0091H01M10/4207H01M10/4257H01M10/441H01M10/443H02J7/0014H01M2010/4278H01M2010/4271Y02E60/10
Inventor 但助兵邓荣钦袁虎容海林
Owner SHENZHEN CLOU ELECTRONICS