Battery management system and method

A battery management system and management system technology, applied in the field of battery management systems, can solve problems such as complex balance strategy structure, battery attenuation, decommissioning, etc., and achieve the effects of perfect system structure and functions, reliable and stable operation, and wide practicability

Pending Publication Date: 2019-07-26
南通国轩新能源科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] Most of the balancing strategies adopted by the existing battery management systems are complex in structure, and have a high failure rate, which is no...

Method used

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  • Battery management system and method

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] figure 1 The shown battery management system includes a three-layer management structure, which are BAMS battery stack management system, MBMS monitoring management system, and BMU battery management unit; , health status, so as to centrally manage the entire energy storage battery to make it safe and reliable; the BAMS battery stack management system is the highest level of the battery management system, and is used for overall control of the entire battery management system; BAMS battery stack The management system is connected with the PCS energy storage converter through RS-485 bus or Modbus-TCP / IP communication protocol;

[0021] MBMS monitoring and management system, as the middle management layer of the battery management system, is used to manage the charging and discharging process of the battery pack, and perform f...

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Abstract

The invention discloses a battery management system and method. The battery management system comprises three layers of management structures, namely a BAMS, an MBMS and a BMU, wherein the BAMS battery pile management system is used for collecting subordinate MBMS information, and is connected with a PCS energy storage converter through a communication protocol; the MBMS monitoring management system is used as a middle management layer of the battery management system, and one end of the MBMS monitoring management system is connected with the BAMS battery pile management system through a CAN bus, and the other end is used for managing a plurality of BMU battery management units through the CAN bus; and the BMU battery management unit is used for monitoring the voltage and temperature of the single batteries, and is a minimum composition unit. According to the voltage balancing method of the battery management system, the battery voltages in the battery pack tend to be consistent through the discharging balancing method. According to the system and the method, the adopted voltage balance strategy is simple in configuration, so that the fault rate is relatively low and the maintenance is convenient.

Description

technical field [0001] The present invention relates to a management system and method, in particular to a battery management system and method. Background technique [0002] With the popularization of power system applications, energy storage devices have been more and more widely used. Due to the large size of lithium batteries in energy storage devices, battery management systems are usually required to monitor and optimize them to maintain their safety, durability and power. BMS (Battery Management System, battery management system) is a system for managing batteries. It usually has the function of measuring battery voltage to prevent or avoid abnormal conditions such as battery over-discharge, over-charge, and over-temperature. In addition, the equalization function is a very important function in the battery management system, which can maintain the consistency of the battery pack, thereby ensuring the service life and usable capacity of the battery pack. [0003] Mo...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCH02J7/0016H01M10/441Y02E60/10
Inventor 邱卫东徐兵蒋仇明姚映青樊继玲罗林梁海燕
Owner 南通国轩新能源科技有限公司
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