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Energy storage battery management system

A management system and energy storage battery technology, which is applied in battery circuit devices, current collectors, electric vehicles, etc., can solve problems affecting the accuracy of battery life calculation, deterioration of overall battery performance, inconsistent performance of single cells, etc., to achieve complete functions , timely and stable communication, and high reliability

Active Publication Date: 2013-07-31
BEIJING HUADIAN TIANREN ELECTRIC POWER CONTROL TECH +1
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AI Technical Summary

Problems solved by technology

After repeated charging and discharging, the performance of the battery will be inconsistent, which will lead to the deterioration of the overall performance of the battery, affecting the battery life and the SOC calculation accuracy of the battery stack

Method used

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Embodiment Construction

[0040] The present invention will now be described in detail in conjunction with specific embodiments and accompanying drawings.

[0041] as attached figure 1 As shown, the present invention discloses an energy storage battery management system. The system adopts a distributed three-layer management system, and the system includes a bottom layer BMU, a middle layer BCMS and a top layer BAMS.

[0042] In the system, a battery box is used as a battery unit, and the battery unit is managed by the BMU. The BMU at the bottom of the system includes a voltage temperature measurement module and a power supply and discharge equalization module.

[0043] The BMU voltage and temperature measurement module at the bottom of the system is mainly realized by the battery management chip LTC6802. as attached figure 2 As shown, a LTC6802 chip can collect 12 voltage signals and 2 temperature signals. The voltage and temperature information is transmitted to the CPU of the BMU through SPI com...

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Abstract

The invention discloses an energy storage battery management system. A distributed three-layer management system is adopted in the system, wherein the management system comprises a bottom BMU (Battery Measurement Unit), a middle BCMS (Battery Cluster Management System) and a top BAMS (Battery Array Management System). The bottom BMU comprises a voltage and temperature measuring module and a charging / discharging balancing module; the middle BCMS is the core of the battery management system and comprises a voltage temperature treatment module, a balance control module, a relay control module, an AD (Analog and Digital) collecting module and a core parameter calculating module; and the top BAMS comprises a battery information gathering module, a system alarm information treatment module, a BAMS-PCS (Battery Array Management System-Process Control System) communicating module and a BAMS-PCS-upper monitoring system communicating module. Information transmission in the three layers of structures in the system is realized by using a CAN2.0B communication protocol; and the communication between the BAMS and an energy conversion PCS system and an upper monitoring system is realized by using a Modbus TCP (Transmission Control Protocol). On account of the special requirement on the battery management system in the field of energy storage, the invention provides the energy storage battery management system which is high in reliability, complete in function, real-time and stable in communication and relatively complete in management system structure.

Description

technical field [0001] The invention relates to the field of new energy storage systems, in particular to an energy storage battery management system. Background technique [0002] Due to the inherent intermittent and random characteristics of new energy generation such as wind energy and solar energy, it will have adverse effects on the safe and stable operation of the power grid. The development of energy storage technology can improve its operation quality. A reasonable and efficient battery management system plays a vital role in the life of the battery stack and the safety of the entire energy storage system. [0003] Most of the existing battery management systems are directly quoted from the battery management system of electric vehicles. The service battery capacity is small, the function is single, and the real-time performance is poor. The series connection of large-capacity batteries in a megawatt energy storage system puts forward stricter requirements on the c...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 黄振江裴丽娜黄哲董德鑫余康
Owner BEIJING HUADIAN TIANREN ELECTRIC POWER CONTROL TECH
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