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Optimization method for frosting critical point of air-conditioning system of pure electric car

A pure electric vehicle and optimization method technology, which is applied in the field of optimization of the frosting critical point of the air-conditioning system of the pure electric vehicle, can solve the problems such as the long restart time of the compressor, achieve simple and effective frosting, protect the frosting, and reduce the frosting of the electric vehicle The effect of energy consumption

Inactive Publication Date: 2017-11-07
BONAIRE AUTOMOTIVE ELECTRICAL SYST
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for optimizing the frosting critical point of the air-conditioning system of pure electric vehicles, which can effectively solve the problem of too long restart time after the compressor stops

Method used

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  • Optimization method for frosting critical point of air-conditioning system of pure electric car

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Embodiment Construction

[0012] The present invention is specifically aimed at the frosting protection performance of the air conditioner of the electric vehicle, and proposes a logical design method through the air conditioner controller, so as to protect the compressor from frosting, ensure the normal operation of the air conditioning system, and also improve the energy saving of the electric vehicle Effect.

[0013] The invention simply and effectively solves the problem of too long downtime of the compressor for anti-frost by adjusting the secondary rotational speed of the compressor, and effectively reduces the energy consumption of the electric vehicle.

[0014] like figure 1 Shown, concrete method of the present invention comprises:

[0015] 1. Level one speed reduction. When the temperature of the evaporator temperature sensor drops to T1, the compressor reaches the speed S1rpm. To ensure the stability of the air conditioning system, the temperature value of the evaporator temperature senso...

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Abstract

The invention discloses an optimization method for a frosting critical point of an air-conditioning system of a pure electric car. The optimization method is characterized by comprising the steps that when the temperature of an evaporator temperature sensor is decreased to T1, the rotating speed of a compressor reaches S1 rpm, the stability of the air-conditioning system is ensured, and the temperature value of the evaporator temperature sensor is slowly decreased; when the temperature of the evaporator temperature sensor is decreased to T2, the rotating speed of the compressor reaches S2 rpm; and when the rotating speed of the compressor reaches S2 rpm, the evaporator temperature sensor is in a stable temperature value. Through the adopted method, the rotating speed of the compressor is controlled through grading adjusting of an air-condition controller, frosting is precisely and effectively protected, and energy consumption of the electric car is reduced.

Description

technical field [0001] The invention relates to the improvement of the pure electric vehicle air conditioner, in particular to a method for optimizing the frosting critical point of the pure electric vehicle air conditioner system. Background technique [0002] New energy vehicles are different from the fixed-displacement compressors of traditional vehicles. Electric compressors change the output of cooling capacity through speed adjustment, and electric compressors generally have a fixed characteristic. After stopping work, the recovery time takes more than 45s. In this way, when the evaporator temperature sensor is protecting the operation of the compressor, after the surface temperature of the evaporator rises to the opening point of the compressor, the compressor may not be restarted, resulting in a decrease in comfort and a decrease in the effect of the air conditioning system. [0003] In view of the above problems, a new method for optimizing the frosting critical poi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60H1/32
CPCB60H1/00735B60H1/00792B60H1/00878B60H1/3205
Inventor 曹飞
Owner BONAIRE AUTOMOTIVE ELECTRICAL SYST
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