A device and method for adjusting the temperature of power battery and automobile

Abstract

The embodiment of the invention discloses a device for regulating the temperature of a power cell. The device comprises a box body provided with the power cell, a circulating water pump, a heat capacity device and a control mechanism, wherein the box body and the heat capacity device form a communicated loop by a pipeline; the circulating water pump is arranged on the pipeline; the heat capacity device comprises a heat capacity box body, coolants stored in the heat capacity box body, an air conditioner coil pipe in an upper space of the heat capacity box body, an electric heater in a lower space of the heat capacity box body and a water temperature sensor on the heat capacity box body; and the control mechanism is connected with the box body, the circulating water pump and the heat capacity device by pipelines, and used for controlling the circulating water pump to drive the coolants to perform temperature regulation on the power cell at least according to different temperatures. The embodiment of the invention further discloses a method for regulating the temperature of the power cell, and an automobile. With the adoption of the device, the method and the automobile, temperature control of the power cell can be conveniently realized, and frequent switching of different heat dissipation modes is avoided.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a device and method for adjusting the temperature of a power battery and an automobile. Background technique [0002] The power battery of a new energy vehicle will generate a certain amount of heat when it is charging and discharging, and it needs to actively or passively dissipate the heat through a certain cooling channel, so as to maintain the normal use of the battery. The heating method increases the temperature of the battery core. [0003] In the traditional air-cooled system of the power battery, the power battery is generally cooled by extracting the cold air in the passenger compartment, but when the weather is low, the power battery cannot be heated. If the power battery needs to be cooled and heated , need to add liquid-liquid heat exchanger, high-pressure liquid heater, battery radiator, connecting pipelines and valves and other components, and also need a set of...

AI Technical Summary

Problems solved by technology

[0004] Similarly, in the traditional liquid cooling system of the power battery, although the power battery can be cooled and heated, the system can directly dissipate heat when the ambient temperature is low because it has no fixed cooling source during the cooling process. To the outside world, when the ambient temperature is high, it can dissipate heat through the air conditioner, which will cause the cooling mode to switch back and forth between different heat dissipation methods when the ambient temperature is different, and increase the difficulty of cooling control, which will affect the use of the air conditioner in the passenger compartment under certain conditions

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