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Power supply protection circuit and application device thereof

A power protection and protection circuit technology, applied in emergency protection circuit devices, battery circuit devices, circuit devices, etc., can solve problems such as BMS power supply damage, high bus voltage, threats to BMS operation safety, etc., to achieve the effect of ensuring safe operation

Pending Publication Date: 2021-06-29
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, during the process of charging the energy storage battery by the charging and discharging equipment, if the main control switch K1 is suddenly disconnected due to an abnormal fault, the charging load of the charging and discharging equipment is canceled instantly, and a fault occurs on the bus between the charging and discharging equipment and the main control switch K1. Higher bus voltage can easily cause damage to the BMS power supply due to overvoltage, and even threaten the operation safety of the entire BMS

Method used

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  • Power supply protection circuit and application device thereof
  • Power supply protection circuit and application device thereof
  • Power supply protection circuit and application device thereof

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Embodiment Construction

[0108] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0109] see figure 2 , figure 2 It is a schematic structural diagram of the first type of power supply protection circuit provided by the embodiment of the present invention. The power supply protection circuit provided by this embodiment includes: a main control switch K1 and a protection circuit, wherein,

[0110] The main control switch K1 is connected in series between the energy storage battery and the charge-discharge device, that is, the energy storage battery, the main control swi...

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Abstract

The invention provides a power supply protection circuit and the application device thereof and relates to the technical field of power electronics, the protection circuit comprises a main control switch and a protection circuit, the main control switch is connected between an energy storage battery and charging and discharging equipment in series to form a charging and discharging main loop, and a BMS power supply is connected with the protection circuit and the charging and discharging main loop. And when the main control switch is switched off, the protection circuit can control the input voltage of the BMS power supply to be within a preset safety range. According to the power supply protection circuit provided by the invention, when the main control switch is switched off, the input voltage of the BMS power supply is controlled within the preset safety range through the protection circuit, so that the BMS power supply is ensured not to bear over-high voltage, and the safe operation of the BMS power supply and the whole BMS is ensured.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a power supply protection circuit and an application device thereof. Background technique [0002] In the existing energy storage system, the working power of BMS (Battery Management System, battery management system) can be obtained from the charging and discharging main circuit in the system, see figure 1 , figure 1 It is a structural block diagram of the energy storage system in the prior art. The main control switch K1 in the BMS is connected in series between the energy storage battery and the charging and discharging equipment. The charging and discharging equipment or the energy storage battery outputs electric energy and transmits it to the control module in the BMS to realize the power supply for the entire BMS. [0003] In the practical application of the energy storage system, the energy storage battery includes two working conditions of charging and discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02H9/04
CPCH02J7/00308H02H9/04
Inventor 陈飞贺伟曹承锐
Owner SUNGROW POWER SUPPLY CO LTD