Power battery cooling system and electric vehicle using same

Abstract

The invention provides a power battery cooling system and an electric vehicle using the same. The electric vehicle comprises the power battery cooling system; the power battery cooling system comprises a vehicle-mounted air conditioner and cold plates for dissipating heat for power batteries; water inlets of the cold plates are connected with a condensed water outlet of the vehicle-mounted air conditioner by a water pipe; the cold plates comprise upper and lower cold plates; the upper and lower cold plates are connected in series and side by side by a flow diversion pipe; the upper parts of the cold plates are used for placing the power batteries; and a drainage pipe for draining cooling water out of the vehicle is arranged at a water outlet of the lower cold plate. The power battery cooling system and the electric vehicle using the same have the beneficial effects that the cooling system directly uses condensed water generated by the vehicle-mounted air conditioner as the cooling liquid; and the temperature of the condensed water is far lower than the normal temperature, and thus, the cooling system has a good heat dissipation effect on the power batteries. Meanwhile, the air conditioner continuously generates the condensed water in the using process and after dissipating heat for battery packs, cooling water can be directly drained out of the vehicle without being recycled, so that arrangement of a cooling water heat dissipation apparatus is avoided, thereby simplifying the system structure.

Description

technical field [0001] The invention relates to a power battery cooling system and an electric vehicle using the system. Background technique [0002] With the continuous development of the new energy industry, electric vehicles are occupying more and more market advantages due to their energy-saving and environmental protection features. As one of the core components of electric vehicles, power batteries have higher requirements for the working environment temperature. Generally, it is required to be between -20°C and 60°C in the discharge state, so it is inevitable to dissipate heat for the power battery. The traditional air-cooled heat dissipation has been gradually eliminated due to its poor effect. At present, most of them use liquid cooling systems. The application publication number is CN103490117A, and the Chinese invention patent application publication date is 2014.01.01 discloses a battery pack cooling system for electric vehicles, including water tanks, water pum...

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