Ternary lithium battery heavy-current equalization ARM control system

Abstract

The present invention discloses a ternary lithium battery heavy-current equalization ARM control system. The system comprises at least two serial ternary lithium batteries, a first contactor and a second contactor having the same number as the ternary lithium batteries, a heavy-current discharge resistor, a ternary lithium battery voltage detection module, an ARM controller and a protective device. The ARM controller obtains the voltage of each ternary lithium battery through the ternary lithium battery voltage detection module, and when the equalization degree between the ternary lithium batteries is larger than a setting threshold value, the ternary lithium battery with the maximum voltage is discharged through the heavy-current discharge resistor according to the setting time. The ARM is taken as a main equalization controller to improve the control speed. The contactor matrix mode is employed to realize the heavy-current discharge of the ternary lithium battery so as to realize the equalization reliability and realize the heavy-current discharge. Ternary lithium battery heavy-current equalization ARM control system is simple in structure, convenient to operate, safe and reliable and good in equalization effect.

Description

technical field [0001] The invention belongs to the technical field of equalization of lithium battery packs, in particular to an ARM control system for high-current equalization of ternary lithium batteries. Background technique [0002] The development of fuel vehicles has caused a huge consumption of oil resources, the deepening of the global energy crisis, and at the same time aggravated the harm of the greenhouse effect and air pollution. Most countries, governments and automobile companies in the world generally recognize that energy saving and emission reduction is the future development direction of the automobile industry, and the development of electric vehicles will be the best way to solve this difficulty. Electric vehicles have the advantages of low noise, no exhaust emissions, environmental friendliness, high thermal efficiency, low emissions, recyclable utilization, and improved energy structure. Various automobile manufacturers are actively developing electr...

AI Technical Summary

Problems solved by technology

When the capacity of the ternary lithium battery is relatively large, the discharge current of the discharge resistor will hardly meet the requirements of fast equalization

If the power of the discharge resistor corresponding to each ternary lithium battery is increased, its volume and heat dissipation will face new challenges. Existing systems that use resistance balancing rarely have large current balancing systems

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