Battery pack cooling system arrangement structure with four-way valve

Abstract

The invention discloses a battery pack cooling system arrangement structure with a four-way valve. The battery pack cooling system arrangement structure comprises a battery cell, a battery module liquid-cooling plate, a battery pack internal liquid-cooling pipeline, a battery pack external liquid-cooling pipeline, a battery pack plate via connector first liquid inlet, a battery pack plate via connector second liquid inlet, the four-way valve, a plate-type heat exchanger, an air conditioner unit assembly and a water pump, wherein the battery cell is contacted with the battery module liquid-cooling plate, the battery module liquid-cooling plate is connected in series and parallel by the battery pack internal liquid-cooling pipeline, the battery pack internal liquid-cooling pipeline is connected with the battery pack plate via connector first liquid inlet and the battery pack plate via connector second liquid inlet and is connected to the battery pack external liquid-cooling pipeline by aplate via connector, the battery pack external pipeline is connected with the four-way valve and then is connected in series with the plate-type heat exchanger, the plate-type heat exchanger is connected in series with an air conditioner set, and the water pump is connected in series with a liquid-cooling loop and is arranged at an upstream of the four-way valve.

Description

[0001] Technical field: [0002] The invention relates to an arrangement structure of a battery pack cooling system with a four-way valve, which belongs to the technical field of new energy vehicles. [0003] Background technique: [0004] As a new energy vehicle technology, electric vehicles have attracted more and more attention due to their low energy consumption, comfortable riding experience and zero emissions. Among them, the power battery is the core of the electric vehicle, which mainly provides energy for the vehicle. [0005] As the energy source of electric vehicles, power batteries are the key link to improve vehicle performance and reduce costs. Lithium-ion batteries are the preferred power batteries for electric vehicles because of their advantages such as large specific energy, long cycle life, low self-discharge rate, wide allowable operating temperature range and good low temperature effect. However, since the lithium-ion battery itself will generate a lot of...

AI Technical Summary

Problems solved by technology

[0010] The present invention has the following beneficial effects: the present invention connects a four-way valve into the coolant pipeline between the water-cooling unit and the battery pack, which solves the problem of changing the flow direction of the coolant, and further solves the problem of water inlet and outlet through the conversion of the water inlet and outlet. The problem of large temperature difference between the surrounding cells; by controlling the multiple conversions of the four-way valve, the temperature uniformity function inside the battery pack is realized; the power consumption of the cooling system is reduced, and the intelligent control of the battery pack temperature is realized

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