Air cooling and liquid cooling combined battery heat dissipation device and method

A heat-dissipating device and a combined technology, applied in battery circuit devices, circuit devices, secondary batteries, etc., can solve the problems of inability to control the maximum temperature of the battery pack at 50°C, decrease in charge and discharge capacity, and low thermal conductivity, so as to make up for it. The effect of uneven heat dissipation, energy saving and low cost
CN111244569AActive Publication Date: 2020-06-05JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2020-06-05

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Abstract

The invention provides an air cooling and liquid cooling combined battery heat dissipation device and method, and belongs to the technical field of automobile battery heat management. According to thewhole heat dissipation device, a bidirectional surrounding liquid cooling pipe is arranged at the periphery of a battery module, and a cooling fan is arranged at the bottom of a battery box body, sothat air cooling and liquid cooling are combined to dissipate heat of the battery module; meanwhile, the cooling fan driving motor and the electronic water pump are controlled through the BMS, different heat dissipation modes can be selected according to the battery module temperature detected in real time, the rotating speed of the cooling fan and the flow of a cooling liquid inlet can be controlled in real time according to the temperature, energy is saved, and heat dissipation is efficient; and the heat dissipation device is further provided with a wind pendulum and an exhaust fan for auxiliary heat dissipation, and the heat dissipation effect is further improved.
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Description

technical field

[0001] The invention belongs to the technical field of thermal management of automobile batteries, and in particular relates to a battery cooling device and method combining air cooling and liquid cooling. Background technique

[0002] As the main power source of new energy vehicles, lithium-ion batteries have the advantages of high working voltage, high energy density, long cycle life and environmental friendliness, but at the same time, lithium-ion batteries are very sensitive to temperature. Studies have shown that the optimal operating temperature of lithium-ion batteries is 20-40°C, and the temperature difference (ΔT) in the battery pack should be controlled below 5°C. When the ambient temperature is too low, the movement rate of conductive ions will decrease, the internal resistance of the lithium-ion battery will increase rapidly, and the charge and discharge capacity will drop significantly. When the temperature is high, a series of chemical reaction...

Claims

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