Iron lithium battery large-current equalizing method based on ARM control

Abstract

The invention discloses an iron lithium battery large-current equalizing method based on ARM control. A set of iron lithium battery control system is arranged. The iron lithium battery control system comprises the components of at least two serially connected iron lithium batteries, first contacts and second contactors of which the number is same with that of the iron lithium batteries, a large-current discharging resistor, an iron lithium battery voltage detecting module, an ARM controller and a protecting device. The ARM controller acquires the voltage of each iron lithium battery through the iron lithium battery voltage detecting module. On the condition that equilibrium between the iron lithium batteries is higher than a preset threshold, discharging is performed on the iron lithium battery with highest voltage according to preset time through the large-current discharging resistor. According to the iron lithium battery large-current equalizing method, the ARM controller is used as the main equalizing controller, thereby improving control speed and stability. According to the iron lithium battery large-current equalizing method, a contactor matrix manner is used for realizing large-current discharging on the iron lithium battery, thereby improving equalizing reliability and realizing large-current discharging. The iron lithium battery large-current equalizing method has advantages of simple operation, high safety, high reliability and high equalizing effect.

Description

technical field [0001] The invention belongs to the technical field of equalization of lithium battery packs, and in particular relates to an ARM-based control-based large-current equalization method for iron-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 activel...

AI Technical Summary

Problems solved by technology

When the capacity of the iron-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 iron-lithium battery is increased, its volume and heat dissipation will face new challenges. Existing methods for balancing resistance have few methods for balancing large currents

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