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Refrigeration method and control system capable of eliminating temperature disturbances

A refrigeration method and control system technology, which are applied in battery/fuel cell control devices, electric vehicles, heating/cooling equipment, etc., can solve the problems of low refrigeration accuracy and poor refrigeration effect, and achieve improved use efficiency, accuracy and reliability. Efficient refrigeration control, the effect of reducing production costs

Active Publication Date: 2020-11-24
HUIZHOU DESAY SV AUTOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a cooling method and a control system for eliminating temperature disturbances, which solves the problem of low cooling accuracy and poor cooling effect caused by the battery pack cooling intervention of the passenger compartment air conditioner when the existing new energy vehicles are cooling the passenger compartment and the battery pack at the same time. good technical questions

Method used

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  • Refrigeration method and control system capable of eliminating temperature disturbances
  • Refrigeration method and control system capable of eliminating temperature disturbances
  • Refrigeration method and control system capable of eliminating temperature disturbances

Examples

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Embodiment 1

[0048] A refrigeration method for eliminating temperature disturbance provided by an embodiment of the present invention, such as figure 1 As shown, in this embodiment, steps are included:

[0049] When the passenger compartment and the battery pack enter the initial cooling stage at the same time, the electric compressor is controlled to work at the first preset speed, the first solenoid valve is opened, the second solenoid valve is opened and closed according to the preset control waveform, and the battery water pump is turned on;

[0050] When the passenger compartment and the battery pack enter the refrigeration stabilization period at the same time, the electric compressor is controlled to work at the second preset speed, the first solenoid valve is opened, the second solenoid valve is opened, and the battery water pump is turned on.

[0051] In this embodiment, by controlling the electric compressor and the first electromagnetic valve to work at the first preset speed an...

Embodiment 2

[0079] The reference signs in the accompanying drawings of the description in this embodiment include: air conditioner controller 1, electric compressor 2, first solenoid valve 3, second solenoid valve 4, battery pack cooling module 5, cooling pipeline 51, temperature sensor 52, A battery water pump 53, a condenser 6, a thermal expansion valve 7, a first evaporator 8, and a second evaporator 9.

[0080] see image 3 , Figure 4 , the embodiment of the present invention also provides a control system for eliminating temperature disturbances, running a refrigeration method for eliminating temperature disturbances in Embodiment 1, including an air conditioner controller 1 and an electric compressor 2 electrically connected thereto, and a first solenoid valve 3. The second solenoid valve 4, the battery pack cooling module 5; also includes a condenser 6 connected to the electric compressor 2, a thermal expansion valve 7 and a first evaporator 8 connected to the first solenoid valv...

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Abstract

The invention relates to the technical field of refrigeration control, and provides a refrigeration method and control system capable of eliminating temperature disturbances. By controlling an electric compressor and a first solenoid valve to operate at a first preset speed and conduct in a preset control waveform during the initial stage of refrigeration when a passenger compartment and a batterypack are simultaneously refrigerated, the refrigeration efficiency is improved through the support of the electric compressor at the first preset speed, a second solenoid valve is further adopted todynamically control the connection and disconnection of a refrigeration circuit of the battery pack, the refrigerant pressure in the passenger compartment is lowered, then the interference disturbancedegree of the simultaneous refrigeration of the battery pack is effectively lowered, a smooth transition from high temperature to low temperature in the passenger compartment at the initial stage ofrefrigeration (a smooth transition from the initial stage of refrigeration to the stable period of refrigeration) is ensured, and a control valve of a vehicle system is used to provide comfortable user experience.

Description

technical field [0001] The invention relates to the technical field of refrigeration control, in particular to a refrigeration method and a control system for eliminating temperature disturbances. Background technique [0002] At present, most electric vehicles only use one compressor to cool the battery pack and the passenger compartment at the same time, and control the circuit of the refrigerant through the Chiller (cooler) solenoid valve and Evap (fuel evaporation control) battery valve respectively to achieve cooling of the battery pack or evaporation. for heat exchange purposes. Its control process mainly includes the following four states: [0003] 1. When only the passenger cabin sends a cooling request, the control compressor is turned on, the EVAP solenoid valve is turned on, the Chiller solenoid valve is turned off, and the battery water pump is turned off, so that all the refrigerant passes through the evaporator for heat exchange; [0004] 2. When only the bat...

Claims

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Application Information

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IPC IPC(8): B60H1/00B60H1/32B60L58/26
CPCB60H1/00392B60H1/00642B60H1/3205B60H1/00278B60L58/26Y02T10/70
Inventor 郑健师黎家业吴家明
Owner HUIZHOU DESAY SV AUTOMOTIVE
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