A thermal management device, a thermal management system, and a new energy vehicle

Abstract

The embodiment of the present application discloses a thermal management device, a thermal management system and a new energy vehicle, which are used for thermal management of electronic devices, taking into account the heat dissipation and heat preservation requirements of the electronic devices. The thermal management device includes a first loop connected in series by a first solenoid valve, a first liquid cold plate, a second solenoid valve, and a second liquid cold plate, and a thermal insulation structure; wherein, the second liquid cold plate, the thermal insulation structure, and the second One liquid cold plate is stacked in sequence; the first liquid cold plate can conduct heat transfer with the electronic device; when the first electromagnetic valve and the second electromagnetic valve are closed, the first liquid cold plate and the second liquid cold plate are connected, and the first electromagnetic valve and the When the second solenoid valve is turned off, the first liquid cold plate and the second liquid cold plate are isolated.

Description

technical field [0001] The present application relates to the field of new energy technology, in particular to a heat management device, a heat management system and a new energy vehicle. Background technique [0002] With the development of the new energy field, power batteries are used more and more frequently, and the safety performance requirements for power batteries are also getting higher and higher. Among them, temperature is one of the important factors affecting the safety of power batteries. [0003] During the use of the power battery, the temperature has a double impact on the power battery. On the one hand, as the temperature increases, the activity of the electrolyte increases and the internal resistance of the battery decreases, which can improve the performance of the power battery; however, higher temperatures will lead to harmful reactions such as electrode degradation and decomposition, which will affect the performance of the battery. Therefore, it is ...

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Problems solved by technology

On the one hand, as the temperature increases, the activity of the electrolyte increases and the internal resistance of the battery decreases, which can improve the performance of the power battery; however, higher temperatures will lead to harmful reactions such as electrode degradation and decomposition, which will affect the performance of the battery. Therefore, it is necessary to dissipate heat from the power battery when the temperature is high

In addition, using the power battery under low temperature conditions will not only reduce the charge and discharge capacity and service life of the battery, but also cause danger in extreme cases.

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