Battery thermal management method and system based on phase change latent heat of refrigerant

A battery thermal management and phase change latent heat technology, which is applied in the field of battery thermal management methods and systems based on refrigerant phase change latent heat, can solve problems such as difficult consistent management, affecting battery thermal safety performance, insufficient cooling speed and cooling intensity, etc. Achieve high cooling intensity, solve insufficient cooling speed and cooling intensity, and improve battery temperature uniformity

Pending Publication Date: 2022-03-08
HEBEI AGRICULTURAL UNIV.
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a battery heat management method and system based on refrigerant phase change latent heat, which has the advantages of reliable battery cooling speed and cooling intensity, and can

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  • Battery thermal management method and system based on phase change latent heat of refrigerant
  • Battery thermal management method and system based on phase change latent heat of refrigerant
  • Battery thermal management method and system based on phase change latent heat of refrigerant

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0034] see Figure 1-2 , a battery heat management method based on refrigerant phase change latent heat in this embodiment, comprising the following steps:

[0035] S1. Read system sensor information;

[0036] S2. According to the read sensor signal, use an algorithm to calculate the target compressor speed, the target opening of the electronic throttle valve and the switch signal of the pressure relief valve, and include the following steps:

[0037] ...

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Abstract

The invention relates to a battery thermal management method and system based on refrigerant phase change latent heat, and the method comprises the following steps: reading system sensor information, calculating a target compressor rotating speed, an electronic throttle valve target opening degree and a pressure release valve switching signal through an algorithm according to a read sensor signal, and driving a compressor fan according to a target control signal, the system comprises a compressor driver, a condenser fan, a gas-liquid phase change refrigeration plate, a control unit, a pressure sensor and a temperature sensor, the compressor is connected with the condenser through a pipeline, and the condenser is connected with the gas-liquid phase change refrigeration plate. According to the battery thermal management method and system based on the phase change latent heat of the refrigerant, the control targets of high refrigeration speed, high refrigeration intensity and high temperature uniformity are achieved, the requirement of high power charging and discharging heat generation power can be met, and therefore the thermal safety performance of an electric vehicle is guaranteed.

Description

technical field [0001] The invention relates to the technical field of battery thermal management, in particular to a battery thermal management method and system based on refrigerant phase change latent heat. Background technique [0002] Electric vehicles have become an effective way to solve energy and environmental problems, so they have been widely promoted and applied. Batteries are the power source of electric vehicles, but the performance, life and safety of power batteries and battery packs are closely related to temperature. When the battery is low, the available power and capacity of the battery will be significantly reduced, and the battery capacity will be irreversibly attenuated, and the lithium precipitation caused by the battery overcharge may form lithium dendrites to puncture the diaphragm, causing internal short circuits and burying safety hazards. When the temperature of the battery When it is too high, it will accelerate the progress of battery side reac...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/0525H01M10/617H01M10/625H01M10/633H01M10/6554H01M10/6563H01M10/6569
CPCH01M10/613H01M10/0525H01M10/633H01M10/617H01M10/6563H01M10/625H01M10/6569H01M10/6554Y02E60/10
Inventor 张玉龙赵树朋周玉宏袁永伟张世芳
Owner HEBEI AGRICULTURAL UNIV.
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