Lithium battery pack control system, lithium battery and control method

Abstract

The invention relates to a lithium battery pack control system, a lithium battery and a control method, and belongs to the field of lithium batteries. The adopted technical scheme is that the lithium battery pack control system comprises a micro control unit, the lithium battery pack is internally provided a temperature acquisition circuit, an equalization circuit, a voltage acquisition front-end circuit and a heating film temperature acquisition circuit, the lithium battery pack is sequentially connected to a discharge overcurrent and short circuit acquisition circuit, a discharge MOSFET switch, a charge MOSFET switch and a charge overcurrent detection circuit in series from the negative electrode end to the load end, the temperature acquisition circuit, the equalization circuit and the voltage acquisition front-end circuit are connected to a signal input end of the micro control unit, and a signal output end of the micro control unit is connected to a communication circuit, an electric quantity state circuit, an RS485 communication circuit, a UART communication circuit and a heating control circuit. The lithium battery pack control system can realize a bluetooth (or Internet of Things) function, a low temperature protection function, a low temperature heating function, a low voltage protection function and a charging current limiting function of the battery pack, and can improve the service life of the lithium battery.

Description

technical field [0001] The invention relates to a lithium battery pack control system, a lithium battery and a control method, belonging to the field of lithium batteries. Background technique [0002] In recent years, the country has listed the new energy-lithium battery as a strategic emerging industry. China's lithium battery industry has developed by leaps and bounds, and the lithium battery market has also brought diversified development and increasing demand. The batteries used in electric tools, electric forklifts, electric bicycles, and electric vehicles are gradually being replaced by lithium batteries. However, lithium-ion batteries currently on the market can only be used blindly, without knowing the state of the battery at all. At present, the so-called lithium-ion batteries on the market basically use hardware protection boards. This type of lithium-ion batteries cannot meet the diversified needs of the market and cannot perfectly realize the replacement needs...

AI Technical Summary

Problems solved by technology

At present, the so-called lithium-ion batteries on the market basically use hardware protection boards. This type of lithium-ion batteries cannot meet the diversified needs of the market and cannot perfectly realize the replacement needs of various uses.

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