Energy storage system BMS control system

Abstract

The invention discloses an energy storage system BMS control system which comprises a system detection module, a system evaluation module, a system equalization module, a system analysis module and alogic control module. The system detection module detects an energy storage system and a control system in a BMS system. The detection results are respectively sent to other modules in the system; thesystem evaluation module is used for evaluating the BMS system according to the detection results provided by the system detection module; the system equalization module performs equalization mode selection according to the detection result of the system detection module and the evaluation result of the system evaluation module; the energy storage system and the control module in the control system are dynamically analyzed by the system analysis module to obtain a control strategy of the BMS system, and various devices in the BMS system are controlled by the logic control module according tothe control strategy obtained by the system analysis module. The beneficial effects of the system are that high efficiency and accuracy can be realized, and good reference value can be provided for the application and popularization of the BMS system in new energy.

Description

technical field [0001] The invention relates to the technical field of BMS control, in particular to an energy storage system BMS control system. Background technique [0002] The battery management system (BMS) mainly manages and controls the battery pack, improves the utilization rate of the battery, and avoids battery damage caused by excessive charging and discharging of the battery. The wide application of the BMS system greatly improves the life of the battery. The BMS system is used in new energy electric vehicle energy storage It is widely used in the system. While managing the battery pack, it controls the working status of the battery pack by balancing the battery pack. In the BMS control system, the existing technology also realizes the locking and unlocking functions through the control logic, but the existing There are following problems in technology: [0003] 1. When balancing the battery pack in the prior art, the balancing efficiency of the battery is diffe...

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Problems solved by technology

[0003] 1. When balancing the battery pack in the prior art, the balancing efficiency of the battery is different under different usage conditions. During the process of battery balancing, there is a certain dependence on the system chip. If there is no chip, the efficiency of system balancing will be affected;

[0004] 2. During the balance control process of the system, the control range cannot be limited. Excessive charging and discharging of the battery will damage the health of the battery, shorten the battery life, and reduce the efficiency of the battery;

[0005] 3. In the prior art, the SOC value of the battery is usually used to predict the health status of the battery, and the health of the battery is reflected by the battery power. When evaluating the battery, a single evaluation factor cannot accurately reflect the health of the battery, which is prone to errors As a result, it is impossible to correctly and timely grasp and judge the health of the battery;

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