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In-vehicle device temperature adjusting device and vehicle air conditioning device provided with same

A technology for carrying equipment and adjusting devices, applied in mechanical equipment, control devices, vehicle components, etc., can solve the problem of not returning to the compressor, and achieve the effect of improving reliability

Pending Publication Date: 2021-12-31
SANDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the refrigerant circuit is closed, the refrigerant discharged from the compressor enters the outdoor heat exchanger (outdoor heat exchanger) and accumulates, so there are problems as follows: the refrigerant and oil will not return to the compressor, and the Burning occurs soon and failure occurs

Method used

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  • In-vehicle device temperature adjusting device and vehicle air conditioning device provided with same
  • In-vehicle device temperature adjusting device and vehicle air conditioning device provided with same
  • In-vehicle device temperature adjusting device and vehicle air conditioning device provided with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] figure 1 A block diagram of a vehicle air conditioner 1 including an embodiment of the temperature adjustment device of a vehicle-mounted device of the present invention is shown. The vehicle to which the embodiment of the present invention is applied is an electric vehicle (EV) not equipped with an engine (internal combustion engine). Electric power charged to a battery 55 (for example, a lithium ion battery) mounted on the vehicle is supplied to a travel motor (electric motor. Not shown). ) is supplied to drive the vehicle air conditioner 1 according to the present invention, and the electric compressor 2 of the refrigerant circuit R to be described later and the equipment temperature adjusting device 61 are also driven by the electric power supplied from the battery 55 .

[0054] That is, the vehicle air conditioner 1 according to the embodiment switches the heating mode, the dehumidifying and heating mode, the dehumidifying and cooling mode, the cooling mode, and th...

Embodiment 2

[0205] (13-6) Compressor protection control when the refrigerant circuit is blocked (Part 2)

[0206] Next, refer to Figure 16 At the same time, another example of the protection control of the compressor 2 when the refrigerant circuit R is blocked will be described. In this embodiment, the heat pump controller 32 blocks the refrigerant circuit R caused by closing the solenoid valve 35 (cabin) in the battery cooling (individual) mode and in the battery cooling (priority) + air conditioning mode based on the refrigerant-heating medium The degree of decrease in the temperature of the heat medium before and after the heat exchange between the heat exchanger 64 and the refrigerant is determined, and protection control for stopping the compressor 2 is executed.

[0207] Figure 16 It is a flowchart showing the blockage determination of the refrigerant circuit R by the heat pump controller 32 in this embodiment, and the protection control of the compressor 2 in the case of blocka...

Embodiment 3

[0214] (13-7) Compressor protection control when the refrigerant circuit is blocked (Part 3)

[0215] Next, refer to Figure 17 At the same time, another example of the protection control of the compressor 2 when the refrigerant circuit R is blocked will be described. In this embodiment, the heat pump controller 32 will block the refrigerant circuit R generated when the solenoid valve 35 (cabin) is closed in the battery cooling (independent) mode and in the battery cooling (priority) + air conditioning mode, and adjust the temperature based on the equipment. The degree of deviation of the cooling capacity Pchiller of the device 61 (having the heat medium circulation device) from the cooling capacity Pcomp of the compressor 2 is determined, and protection control for stopping the compressor 2 is executed.

[0216] Figure 17 It is a flowchart showing the blockage determination of the refrigerant circuit R by the heat pump controller 32 in this embodiment, and the protection con...

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PUM

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Abstract

To improve the reliability of a temperature adjusting device for cooling an in-vehicle device, such as a battery, by using a refrigerant. This device temperature adjusting device 61 that is a temperature adjusting device for an in-vehicle device adjusts the temperature of a battery 55 mounted on a vehicle and is provided with: a refrigerant circuit R having a compressor 2 for compressing a refrigerant, an outdoor heat exchanger 7 for heat-dissipating the refrigerant, and a refrigerant-heat medium heat exchanger 64 for cooling the battery 55 by making the refrigerant absorb heat; and a control device 11. The control device 11 stops the compressor 2 on the basis of the fact that the refrigerant circuit R is blocked.

Description

technical field [0001] The present invention relates to a temperature adjustment device for a vehicle-mounted device that adjusts the temperature of a device mounted on a vehicle, and a heat pump-type vehicle air conditioner equipped with the device to air-condition a vehicle interior. Background technique [0002] In recent years, environmental problems have become prominent, and vehicles such as electric vehicles and plug-in hybrid vehicles, which drive a travel motor with electric power supplied from a battery mounted on the vehicle, have been popularized. Then, as an air conditioner applicable to such a vehicle, an air conditioner including an electric compressor driven by power supply from a battery, a heat radiator, a heat absorber, and a refrigerant to which an outdoor heat exchanger is connected has been developed. A circuit in which heat is generated by causing the refrigerant discharged from the compressor to release heat at the radiator and the refrigerant that ha...

Claims

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Application Information

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IPC IPC(8): B60L1/00B60H1/00B60H1/22B60H1/32F24F11/32B60L50/60B60L58/26
CPCB60L58/26B60H1/00278B60H2001/00307B60H1/00921B60H2001/00949B60H2001/327B60H1/3225B60H2001/3242B60H2001/3267B60L1/003B60L1/02B60L58/27B60L2240/36B60L2240/34B60L58/12B60L58/16B60L2240/545B60L2240/622B60L2240/662B60L2250/16B60H1/3205B60H1/3227B60H2001/3257B60H2001/3272
Inventor 宫腰龙户山贵司
Owner SANDEN CORP