Lithium battery protection plate based on photomos array

Abstract

The invention relates to a lithium battery protection plate based on a photomos array, belonging to the technical field of a lithium battery. A battery pack is equipped with an anode and a cathode; the anode of the battery pack is connected with a voltage sampling array; the cathode of the battery pack is connected with a battery balancing array; a voltage collecting array is composed of a plurality of photomos tubes; the battery balancing array is also composed of a plurality of photomos tubes; the voltage collecting array is connected with a 16-path sampling channel; the battery balancing array is connected with a 16-path balancing channel; the 16-path sampling channel and the 16-path balancing channel are both connected with an AD conversion circuit. The invention has the beneficial effects that the voltage sampling array and the battery balancing array are used for collecting voltage of the battery pack and balancing the function of the battery pack; an NTC (Negative Temperature Coefficient Thermistor) temperature sensor is used for collecting the temperature of the battery pack, so as to achieve the purpose of protecting the lithium battery. The lithium battery protection plate has the advantages of simple structure, convenience in operation and low cost.

Description

Technical field: [0001] The invention relates to a lithium battery protection board based on a photomos array, belonging to the technical field of lithium batteries. Background technique: [0002] With the development of the new energy industry, more and more attention has been paid to energy such as wind energy and photovoltaics. The rapid development of related industries has also led to the rapid development of series lithium battery packs. Due to industry limitations, lithium battery pack protection boards are required to have BMS Most of the functions of BMS, but cannot withstand the high price of BMS, so low-cost lithium battery protection boards have become the development trend of the industry. Photomos is a photocoupler that uses LEDs in the input components and MOSFETs in the output components. The cost of photomos is low and the performance is excellent. How to integrate photomos into the lithium battery protection board to meet the requirements of the lithium battery ...

AI Technical Summary

Problems solved by technology

[0002] With the development of the new energy industry, more and more attention has been paid to energy such as wind energy and photovoltaics. The rapid development of related industries has also led to the rapid development of series lithium battery packs. Due to industry attribute restrictions, lithium battery pack protection boards are required to have BMS Most of the functions, but can not bear the high price of BMS, so the low-cost lithium battery protection board has become the development trend of the industry, Photomos is a photocoupler that uses LED in the input element and MOSFET in the output element, The cost of photomos is low and the performance is excellent. How to integrate photomos into the lithium battery protection board to meet the requirements of the lithium battery industry has become a problem faced by the industry

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