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Thermal management method and system for electric vehicle and vehicle

An electric vehicle and thermal management technology, applied in electric vehicles, vehicle energy storage, vehicle components, etc., can solve the problem of considering energy consumption optimization, failing to meet the heating or cooling needs of the power battery and passenger compartment, and unable to adjust thermal management strategies, etc. problem to achieve the effect of meeting heating or cooling needs

Active Publication Date: 2019-12-20
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the existing technical solutions is that different thermal management strategies cannot be adjusted according to different ambient temperatures and vehicle operating conditions, and energy consumption optimization and thermal shock to the battery are not considered while meeting the heating or cooling requirements of the power battery and the passenger compartment. avoid

Method used

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  • Thermal management method and system for electric vehicle and vehicle
  • Thermal management method and system for electric vehicle and vehicle
  • Thermal management method and system for electric vehicle and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] figure 1 It is a schematic flow chart of a thermal management method for an electric vehicle provided in Embodiment 1 of the present invention. This embodiment is applicable to heating or In case of cooling, the method may be executed by the thermal management controller in the embodiment of the present invention.

[0030] It is understandable that the power battery needs to be cooled accurately during the daily discharge and charging process to prevent the temperature from being too high; at the same time, in the colder environment in the northern region, there are still working conditions where the power battery needs to be heated. In addition, the heating temperature and heating rate should be controlled more precisely to prevent the life of the battery from attenuating due to excessive temperature rise impact. The current battery heating method mainly uses high-power PTC to heat the coolant and perform direct heat exchange with the power battery. Air-conditioning h...

Embodiment 2

[0063] image 3 It is a schematic flowchart of a thermal management method for an electric vehicle provided in Embodiment 2 of the present invention. This embodiment is further optimized on the basis of Embodiment 1. In this embodiment, the thermal management controller controls the corresponding thermal management components to complete the thermal management tasks of the vehicle under the corresponding thermal management conditions according to each of the thermal management conditions, which is embodied as: if the thermal management conditions is the first thermal management condition, the thermal management controller controls the PTC heating component and / or the first air-conditioning heat pump component to heat the power battery and the passenger compartment; if the thermal management condition is the second thermal management working condition, the thermal management controller controls the second air-conditioning heat pump assembly to cool the power battery and the pas...

Embodiment 3

[0138] Figure 7 It is a schematic structural diagram of an electric vehicle thermal management system provided by Embodiment 3 of the present invention. This embodiment is applicable to adopting different thermal management strategies for heating or In case of cooling, the system includes: thermal management controller 301, power battery thermal management component 302, first air conditioner heat pump component 303, second air conditioner heat pump component 304, PTC heating component 305, power motor component 306 and power motor cooling component 307 ,

[0139] Wherein, the thermal management controller 301 is respectively connected with the power battery thermal management component 302 , the first air conditioner heat pump component 303 , the second air conditioner heat pump component 304 , the PTC heating component 305 , the power motor component 306 and the power motor cooling component 307 .

[0140] The thermal management controller 301 is used to determine at least...

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Abstract

The invention discloses a thermal management method and system for an electric vehicle and the vehicle. The method comprises the following steps that at least one thermal management condition of the vehicle is determined by a thermal management controller according to thermal management request of a power battery and a crew compartment, the thermal management controller controls the correspondingthermal management components to complete the thermal management task of the vehicle in the corresponding thermal management condition according to each thermal management condition, and the thermal management components include a positive temperature coefficient PTC heating assembly, a first air conditioning heat pump assembly and a second air conditioning heat pump assembly. By means of the method, the joint action of the air conditioning heat pump assemblies and the PTC heating assembly is adopted, and different thermal management strategies are determined according to the different thermalmanagement requests of the power battery and the crew compartment, thus heating or cooling needs of the power battery and the crew compartment are met.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of thermal management of automobiles, and in particular to a thermal management method, system and vehicle of electric vehicles. Background technique [0002] The thermal management performance level of pure electric vehicles has an important impact on the overall performance and safety of electric vehicles. Among them, the power battery is the most important part of the entire electric vehicle thermal management system. The power battery needs to be cooled accurately during the daily discharge and charging process to prevent the temperature from being too high; at the same time, in the colder environment in the northern region, there is also a working condition where the power battery needs to be heated, and the heating temperature and The heating rate should be controlled more precisely to prevent the life of the battery from decaying due to excessive temperature rise. In addition, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60H1/22B60L58/26B60L58/27B60L58/10H01M10/42H01M10/44H01M10/613H01M10/615H01M10/625H01M10/633H01M10/635H01M10/663
CPCB60H1/00271B60H1/00278B60H1/00392B60H1/00735B60H1/00878B60H1/2218B60L58/10B60L58/26B60L58/27H01M10/425H01M10/443H01M2010/4271H01M2010/4278H01M2220/20H01M10/613H01M10/615H01M10/625H01M10/633H01M10/635H01M10/663Y02E60/10Y02T10/70
Inventor 王文帅霍云龙杨振夏弋茹冯冶冰
Owner CHINA FIRST AUTOMOBILE
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