A battery management redundancy control system for marine lithium battery packs

Abstract

The invention aims to provide a battery management redundancy control system for a marine lithium battery pack. The battery management redundancy control system comprises a main control device, an auxiliary control device, a standby main control device, a battery pack module, a ZIGBEE wireless redundancy module, an upper computer background monitoring module and an independent line redundancy module. When a bus is free of faults, the main control device and the auxiliary control device are in communication through the bus; the main control device and the auxiliary control device are in contact through life signals during the running; when the bus is free of faults, the standby main control device and the auxiliary control device are in communication through the bus; in case of bus faults, the ZIGBEE wireless redundancy module collects battery pack module state key parameters and uploads collected data to the main control device or the standby main control device; the upper computer background monitoring module is used for battery parameter monitoring and control instruction downloading, and the independent line redundancy module is used for direct control or emergency control of the battery pack module by the upper computer background monitoring module.

Description

technical field [0001] The invention relates to a battery management system, in particular to a control system for the battery management system of a marine lithium battery pack. Background technique [0002] In recent years, with the rise of electric vehicles, battery management systems (BMS) have also made great progress. Although the battery management system does not have a very mature and unified set of technical solutions and standards, the current technically mature BMS can already detect the voltage, current, and temperature of the battery in real time, and can also perform leakage detection, thermal management, and battery balance management. , alarm reminder function, calculate remaining capacity (SOC), electric power and other states, and use algorithm to control the maximum output power (current) according to the battery voltage, current and temperature to obtain the maximum mileage, and use the algorithm to control the charger. Charging with the best current, a...

AI Technical Summary

Problems solved by technology

In addition, high humidity, high salinity, mildew and other harsh weather factors will corrode the BMS communication line, as well as the rationality of the cable passing through the cabin and the room, and various factors such as the convenience of inspection, maintenance, and maintenance are all related to the lithium battery of electric vehicles. There are big differences in the management system

[0007] At the same time, the sea conditions of ships are relatively complex, with large uncertainties, wind, waves, and current interference factors have obvious random uncertainties, and ship loads fluctuate frequently and in a large range. Once the power battery fails, it will cause catastrophic consequences.

[0008] Therefore, directly applying the vehicle-mounted BMS to the ship to manage the battery energy has obvious disadvantages: the battery management system (BMS) does not have dual redundancy, low reliability, and it is difficult to repair in time when a fault occurs

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