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Water pump fault processing method and system in power battery thermal management system

A thermal management system and power battery technology, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as energy waste, heating or cooling devices cannot effectively dissipate heat, and failures

Active Publication Date: 2020-07-07
GAC AION NEW ENERGY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of heating or cooling the power battery, if the water pump fails to work normally, continuing to heat or cool the power battery at this time will cause waste of energy, and may cause the heating or cooling device to fail to dissipate heat effectively. Fault

Method used

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  • Water pump fault processing method and system in power battery thermal management system
  • Water pump fault processing method and system in power battery thermal management system
  • Water pump fault processing method and system in power battery thermal management system

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] Such as figure 1 As shown, in this embodiment, in the power battery thermal management system, the power battery can be switched between the cooling circuit and the heating circuit. The water pump fault handling method S6 is as follows:

[0023] When the temperature control state of the power battery is heating, if it is judged that the water pump has a shutdown fault at this time, put the power battery in the heating circuit, and perform the accessory control S7 of the power battery thermal management system, that is: turn off the heating device; the power battery is in the heating circuit at this time , when the water pump fault recovers, the heating device is e...

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Abstract

According to the water pump fault processing method and system in the power battery thermal management system, a power battery can be switched between a cooling loop and a heating loop, and the processing method comprises the steps that when the temperature control state of the power battery is heating, if it is judged that a water pump has a shutdown fault at the moment, the power battery is located in the heating loop, and a heating device is turned off; the power battery is in a heating loop at the moment, and when the water pump fails and recovers, the heating device is enabled to quicklyheat the power battery; when the temperature control state of the power battery is cooling, if it is judged that the water pump has a shutdown fault at the moment, the power battery is located in a cooling loop, and the cooling device is closed; and the power battery is in a cooling loop at the moment, and the cooling device is enabled to quickly cool the power battery when the water pump fails and recovers. According to the scheme, in the heating or cooling process of the power battery, if the water pump breaks down, through coordination control of accessories, the effects that energy is saved, and the heating or cooling device is prevented from breaking down due to ineffective heat dissipation are achieved.

Description

technical field [0001] The invention relates to the technical field of thermal management systems for power batteries of new energy vehicles, and in particular to a method and system for handling water pump failures in the thermal management system of power batteries. Background technique [0002] Among new energy vehicles, power batteries are closely related to the power and economy of the vehicle. [0003] In order to ensure the good performance of the power battery, it is necessary to make the power battery work in a suitable temperature range, that is, it needs to be heated by a heating device when the temperature of the power battery is low or cooled by a cooling device when the temperature is high. The heating or cooling of the power battery requires the coolant to circulate in the power battery thermal management system, that is, the water pump needs to work normally to drive the coolant to flow. In the process of heating or cooling the power battery, if the water pu...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/615H01M10/625H01M10/633H01M10/6568
CPCH01M10/613H01M10/615H01M10/625H01M10/633H01M10/6568Y02E60/10
Inventor 马香明岳彬彬赵继岭高天一潜磊
Owner GAC AION NEW ENERGY AUTOMOBILE CO LTD
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