Lithium ion battery low-temperature heating device and using method

Abstract

The invention discloses a lithium ion battery low-temperature heating device and a using method, and relates to the technical field of lithium ion battery low-temperature heating. The device comprisesa plurality of first limiting plates and second limiting plates which are spliced with one another, a plurality of first air pipes and a plurality of second air pipes are installed between the upperlimiting plate and the lower limiting plate through connecting circular pipes and connecting pipes respectively. The multiple first limiting plates and the multiple second limiting plates which are spliced with one another are installed on the bottom plate and the partition plate, the limiting strips on the first limiting plates and the limiting strips on the second limiting plates are used for limiting unit batteries of the battery pack correspondingly, shifting of the battery pack is effectively prevented, and the stability of the battery pack is guaranteed; the multiple first air pipes andthe multiple second air pipes are installed between the upper limiting plate and the lower limiting plate through the connecting circular pipes and the connecting pipes correspondingly, the first airpipes and the second air pipes are all special-shaped air pipes, hot air is guided into gaps between unit batteries of the battery pack, the uniformity of the heating effect is guaranteed, and the temperature gradient generated in the batteries is reduced.

Description

technical field [0001] The invention belongs to the technical field of low-temperature heating of lithium-ion batteries, and in particular relates to a low-temperature heating device and a use method of lithium-ion batteries. Background technique [0002] As the power source of new energy vehicles, the power battery directly affects the power performance of the vehicle. Lithium-ion batteries have different charge and discharge performance at different temperatures. In high temperature and high cold, the performance of the battery decreases, which affects the instantaneous charge and discharge power of the battery and its charge and discharge capacity, thereby affecting the instantaneous power of the vehicle and its final performance. In addition, the long-term operation of the battery in a high-temperature and high-cold environment will greatly affect the life of the battery itself. [0003] Charging at low temperature will also lead to the occurrence of lithium precipitati...

AI Technical Summary

Problems solved by technology

Lithium-ion batteries have different charging and discharging performance at different temperatures. In high temperature and high cold, the performance of the battery decreases, which affects the instantaneous charging and discharging power of the battery and its charging and discharging capacity, thereby affecting the instantaneous power of the vehicle and its final performance. In

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