Graphene intelligent temperature-controlled lithium battery pack device

Abstract

The invention discloses a graphene intelligent temperature-controlled lithium battery pack device, which comprises a water pump, a fan, a temperature sensor, an intelligent temperature control module, an air heater and a lithium battery graphene fixing base. The lithium battery graphene fixing base is internally provided with heat dissipation medium circulation channels, which include a water heat dissipation medium circulation channel and an air heat dissipation medium circulation channel. The temperature sensor senses the temperature of the lithium battery graphene fixing base and feeds the temperature back to the intelligent temperature control module. The intelligent temperature control module controls the operation of the air heater and the rotation speeds of the water pump and the fan according to the numerical value of temperature, so as to control the flow speed of the heat dissipation mediums. Thus, the heat dissipation and heating are efficient and stable, and the temperature can be controlled. The temperature can be accurately controlled within the optimal temperature range for charging and discharging of lithium iron phosphate batteries, and the service life of lithium iron phosphate batteries can be increased.

Description

technical field [0001] The invention relates to the field of temperature control of lithium batteries, in particular to a graphene heat dissipation device with fast and stable heat dissipation and heating efficiency and controllable temperature. Background technique [0002] The normal charge and discharge temperature range of lithium iron phosphate batteries is between -20°C and 60°C, but when the temperature is lower than 25°C, the charging performance and discharge performance of lithium batteries will decrease as the temperature gradually decreases. The capacity of the battery is reduced and the service life is reduced. When the temperature is higher than 50°C, the discharge performance will be over-discharged and the electrode polarization of the lithium battery will reduce the capacity of the battery. The temperature is too high or too low to affect the performance of the lithium iron phosphate battery. Charging and discharging performance, currently on the market for ...

AI Technical Summary

Problems solved by technology

[0002] The normal charge and discharge temperature range of lithium iron phosphate batteries is between -20°C and 60°C, but when the temperature is lower than 25°C, the charging performance and discharge performance of lithium batteries will decrease as the temperature gradually decreases. The capacity of the battery is reduced and the service life is reduced. When the temperature is higher than 50°C, the discharge performance will be over-discharged and the electrode polarization of the lithium battery will reduce the capacity of the battery. The temperature is too high or too low to affect the performance of the lithium iron phosphate battery. Charging and discharging performance, currently on the market for lithium battery pack heat dissipation system devices, there is unstable heat dissipation, which makes the working environment temperature of lithium iron phosphate battery fluctuate greatly and frequently, and the degree of heat dissipation cannot be controlled so that the working environment temperature of lithium iron phosphate battery cannot be controlled. Gentle control is within the optimum operating temperature range of lithium batteries. If the temperature is too high or too low, medium and long-term use will reduce the capacity of lithium iron phosphate batteries, thus affecting the service life of lithium iron phosphate batteries

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