Battery management system based on wireless multi-agent

Abstract

The invention relates to a battery management system based on a wireless multi-agent, and belongs to the field of lithium ion battery management systems. The system comprises a middle computer, a sub-battery manager and a battery pack, the middle computer comprises a display module, a first wireless communication module and a database; the middle computer issues a corresponding control instructionaccording to the information fed back by the sub-battery managers; the sub-battery manager comprises an MCU, a collector, a second wireless communication module, a control unit and a Flash memory; the battery pack is formed by sequentially connecting single batteries in series. The problems that in an existing battery management system, temperature measurement is inaccurate, automatic protectioncannot be achieved, unhealthy single batteries cannot be recognized and positioned, the unhealthy batteries cannot be effectively isolated, adaptability is poor, wiring is complex, and circuits are aged are solved. Effective, perfect and reliable protection of the lithium ion battery is realized, the maintainability of the battery pack is improved, the safety of the battery pack is ensured, the service life of the battery is prolonged, and the use cost in the battery life cycle is reduced.

Description

technical field [0001] The invention belongs to the field of lithium ion battery management systems, and relates to a battery management system based on wireless multi-agents. Background technique [0002] Energy crisis and environmental pollution are two major problems facing all countries in the world today. Electric vehicles have the advantages of no emission pollution, low noise, easy operation, low maintenance and operating costs, and have incomparable advantages in environmental protection and energy saving. They are an effective way to solve human energy and environmental pressures. [0003] As we all know, the on-board power battery is not only a technical bottleneck restricting the scale development of electric vehicles, but also a key factor for the high price of electric vehicles, and its cost accounts for 30% to 50% of the cost of a complete vehicle. Therefore, the performance of the battery management system (Battery Management System, BMS) is crucial to the co...

AI Technical Summary

Problems solved by technology

When an individual battery fails in the system, if the faulty battery cannot be isolated automatically, it will affect the working status of the battery pack or even the entire system, making the entire battery pack invalid

At the same time, the existing battery management system cannot measure and store a single data generated during the working process of the battery, such as overvoltage, undervoltage, overcurrent, short circuit current, overtemperature, undertemperature, charge and discharge times

Therefore, the failure of the battery management system will cause major economic losses

[0007] In addition, the existing battery management system uses an acquisition module to collect the performance parameters of a battery pack or multiple battery packs in a battery box, which cannot accurately monitor the performance parameters of a single battery in real time, and the stability and reliability of the battery management system are poor.

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