Air conditioner heat pump system for utilizing waste heat of motor home lower vehicle body battery motor

Abstract

The invention discloses an air conditioner heat pump system for utilizing waste heat of a battery and a motor of a lower car body of a motor home, which belongs to the technical field of heat management of motor homes and comprises four modes of air conditioner refrigeration, battery cooling, motor heat dissipation and in-car air conditioner heating. Battery motor waste heat is utilized, and an air conditioner adopts a heat pump scheme; the comfort can be met, and the endurance mileage of the whole vehicle can be increased; during parking, an outdoor heat exchanger is adopted to absorb a heat source in the environment as a heat source basis of the heat pump; during refrigeration, the battery is separated from the motor; and heat source concentration and effective heat dissipation incapability are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal management of recreational vehicles, and in particular relates to an air-conditioning heat pump system for utilizing waste heat from a battery motor in a lower body of a recreational vehicle. Background Art

[0002] As a means of transportation that integrates living, traveling and entertainment, RVs have developed rapidly in recent years. With the development of electric vehicle technology, electric RVs have gradually become a trend. For RV air conditioners, we also refer to home air conditioners or parking air conditioners.

[0003] Existing solutions:

[0004] ① Directly install household air conditioners. Due to the complex working conditions of RVs, the life and durability of household air conditioners cannot be guaranteed;

[0005] ② Install a parking air conditioner to adjust the temperature in the car through the circulation of refrigerant. The parking air conditioner is independent of the vehicle system and is powered by the vehicle battery. The disadvantage is that the battery will be depleted after working for a long time, and the waste heat of the battery motor of the whole vehicle is not effectively utilized. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an air-conditioning heat pump system for utilizing the waste heat of the battery motor under the body of a motorhome in view of the shortcomings of the background technology.

[0007] The present invention adopts the following technical solutions to solve the above technical problems:

[0008] An air conditioning heat pump system for utilizing waste heat from a battery motor under a motor vehicle comprises a compressor, a three-way valve 1, a three-way valve 2, a three-way valve 3, an electronic expansion valve 0, an air-cooled condenser, an electronic expansion valve 1, an electronic expansion valve 2, an electronic expansion valve 3, an evaporator 1, an evaporator 2, a water pump 1, a WPTC, a four-way valve, a chiller, a battery, an electric drive, a water pump 2, a stop valve 1, a stop valve 2, a stop valve 3, a radiator, an evaporator 1, an evaporator 2, an indoor heat exchanger 1, an indoor heat exchanger 2, a PTC 1, and a PTC 2;

[0009] Among them, the output end of the compressor is connected to the input end of the three-way valve 1, the output end of the three-way valve 1 is respectively connected to the input end of the electronic expansion valve 0 and the input end of the stop valve 1, the output end of the stop valve 1 is respectively connected to the input end of the indoor heat exchanger 1 and the input end of the indoor heat exchanger 2, the output end of the indoor heat exchanger 1 and the output end of the indoor heat exchanger 2 are respectively connected to the input end of the three-way valve 2, the output end of the three-way valve 2 is connected to the input end of the three-way valve 1 and the input end of the electronic expansion valve 0, the three-way valve 2 is respectively connected to the input end of the stop valve 2 and the input end of the electronic expansion valve 3 through the stop valve 3, the output end of the electronic expansion valve 0 is connected to the input end of the air-cooled condenser, and the output end of the air-cooled condenser The ends are respectively connected to the input end of electronic expansion valve 1, the input end of electronic expansion valve 2 and the input end of electronic expansion valve 3, the output end of electronic expansion valve 3 is connected to the input end of Chiller, the output end of Chiller, the output end of evaporator 1, the output end of evaporator 2 and the output end of stop valve 2 are connected to the input end of compressor, the output end of Chiller is connected to the input end of Chiller through battery, water pump 1 and WPTC in sequence, the output end of electric drive is linked to the input end of three-way valve 3 through water pump 2, the output end of three-way valve 3 is respectively connected to the input end of radiator and the input end of electric drive, and the output end of radiator is also connected to the input end of electric drive.

[0010] As a further preferred embodiment of the air-conditioning heat pump system for utilizing the waste heat of the battery motor in the lower body of a motorhome of the present invention, it includes four modes: air-conditioning refrigeration, battery cooling, motor heat dissipation, and in-vehicle air-conditioning heating.

[0011] As a further preferred embodiment of an air conditioning heat pump system for utilizing waste heat from a battery motor under a motorhome of the present invention, the air conditioning refrigeration mode comprises a compressor, a three-way valve, an electronic expansion valve 0, an air-cooled condenser, an electronic expansion valve 1, an electronic expansion valve 2, an evaporator 1, and an evaporator 2; the specific principles include:

[0012] The compressor controls the electronic expansion valve 0 to be fully open through the three-way valve; releases heat to the environment or the cabin through the air-cooled condenser, controls the opening of the electronic expansion valve 1 and the electronic expansion valve 2 according to the superheat, and reduces the pressure; absorbs the heat in the vehicle through the evaporator 1 and the evaporator 2 to achieve the cooling effect.

[0013] As a further preferred solution of the air conditioning heat pump system for utilizing the waste heat of the battery motor of the lower body of a motorhome of the present invention, the battery cooling mode: includes refrigerant side, coolant side and radiator cooling;

[0014] On the refrigerant side: the compressor controls the electronic expansion valve 0 to be fully open through the three-way valve, releases heat to the environment or the cabin through the air-cooled condenser, and controls the chiller through the electronic expansion valve 3;

[0015] Coolant side: The battery controls WPTC through the water pump, WPTC controls Chiller through the four-way valve, and the battery is controlled through Chiller;

[0016] Radiator cooling: Water pump 2 is controlled by four-way valve. Electric drive control motor water pump control three-way valve control Radiator control four-way valve control Chiller control battery.

[0017] As a further preferred solution of the air-conditioning heat pump system of the present invention for utilizing the waste heat of the battery motor of the lower body of a motorhome, the motor heat dissipation includes a water pump 2, a three-way valve, a radiator, and an electric drive. The three-way valve controls the water pump 2 through the radiator and the electric drive in turn.

[0018] As a further preferred solution of the air conditioning heat pump system for utilizing the waste heat of the battery motor of the lower body of a motorhome of the present invention, the in-vehicle air conditioning heating module comprises an air source heat pump and a battery motor source heat pump;

[0019] Among them, the specific principles of air source heat pump include:

[0020] The compressor opens stop valve 1 through the three-way valve, controls indoor heat exchanger 1 and heat exchanger 2 to release heat into the vehicle, opens electronic expansion valve 0 through the three-way valve, calculates the expansion valve opening according to the superheat, and controls stop valve 2 to open by absorbing ambient heat through the air-cooled condenser;

[0021] Battery motor source heat pump, the specific principles include:

[0022] Refrigerant side: The compressor controls the stop valve 1 to open through the three-way valve, releases heat to the vehicle through the indoor heat exchanger 1 and the heat exchanger 2, controls the stop valve to open through the three-way valve, and calculates the expansion valve opening according to the superheat through the electronic expansion valve 3.

[0023] Coolant side: Water pump 1 controls the electric drive through the four-way valve to control the motor water pump control, three-way valve control, four-way valve control, Chiller control battery.

[0024] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0025] The purpose of the present invention is to solve the above disadvantages. The characteristics of the present invention are:

[0026] 1. The present invention provides an air conditioning heat pump system that utilizes the waste heat of the battery motor under the RV. The waste heat of the battery motor is utilized, and the air conditioning adopts a heat pump solution; it can meet the comfort and improve the cruising range of the whole vehicle;

[0027] 2. When the vehicle is parked, an outdoor heat exchanger is used to absorb heat from the environment as the heat source for the heat pump;

[0028] 3. When cooling, separate it from the battery and motor to avoid heat concentration and ineffective heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the principle diagram of the air conditioner thermal management of the present invention;

[0030] Figure 2 This is a schematic diagram of the air conditioning refrigeration principle of the present invention;

[0031] Figure 3 It is a schematic diagram of the battery refrigeration (refrigerant) of the present invention;

[0032] Figure 4 It is the battery cooling (radiator) principle diagram of the present invention;

[0033] Figure 5 This is the principle diagram of the air conditioning heating (air source) of the present invention

[0034] Figure 6 It is the principle diagram of the air conditioning heating (motor battery) of the present invention. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings:

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention is described in detail below based on the drawings and preferred embodiments, and the purpose and effect of the present invention will become clearer. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0037] An air conditioning heat pump system utilizing waste heat from a battery motor under a motor vehicle body, such as Figure 1 As shown, it includes a compressor, a three-way valve 1, a three-way valve 2, a three-way valve 3, an electronic expansion valve 0, an air-cooled condenser, an electronic expansion valve 1, an electronic expansion valve 2, an electronic expansion valve 3, an evaporator 1, an evaporator 2, a water pump 1, a WPTC, a four-way valve, a Chiller, a battery, an electric drive, a water pump 2, a stop valve 1, a stop valve 2, a stop valve 3, a radiator, an evaporator 1, an evaporator 2, an indoor heat exchanger 1, an indoor heat exchanger 2, a PTC1, and a PTC2;

[0038] Among them, the output end of the compressor is connected to the input end of the three-way valve 1, the output end of the three-way valve 1 is respectively connected to the input end of the electronic expansion valve 0 and the input end of the stop valve 1, the output end of the stop valve 1 is respectively connected to the input end of the indoor heat exchanger 1 and the input end of the indoor heat exchanger 2, the output end of the indoor heat exchanger 1 and the output end of the indoor heat exchanger 2 are respectively connected to the input end of the three-way valve 2, the output end of the three-way valve 2 is connected to the input end of the three-way valve 1 and the input end of the electronic expansion valve 0, the three-way valve 2 is respectively connected to the input end of the stop valve 2 and the input end of the electronic expansion valve 3 through the stop valve 3, the output end of the electronic expansion valve 0 is connected to the input end of the air-cooled condenser, and the output end of the air-cooled condenser The ends are respectively connected to the input end of electronic expansion valve 1, the input end of electronic expansion valve 2 and the input end of electronic expansion valve 3, the output end of electronic expansion valve 3 is connected to the input end of Chiller, the output end of Chiller, the output end of evaporator 1, the output end of evaporator 2 and the output end of stop valve 2 are connected to the input end of compressor, the output end of Chiller is connected to the input end of Chiller through battery, water pump 1 and WPTC in sequence, the output end of electric drive is linked to the input end of three-way valve 3 through water pump 2, the output end of three-way valve 3 is respectively connected to the input end of radiator and the input end of electric drive, and the output end of radiator is also connected to the input end of electric drive.

[0039] It includes four modes: air conditioning cooling, battery cooling, motor heat dissipation, and in-car air conditioning heating.

[0040] like Figure 2 As shown, the air conditioning refrigeration mode includes a compressor, a three-way valve, an electronic expansion valve 0, an air-cooled condenser, an electronic expansion valve 1, an electronic expansion valve 2, an evaporator 1, and an evaporator 2; the specific principles include:

[0041] The compressor controls the electronic expansion valve 0 to be fully open through the three-way valve; releases heat to the environment or the cabin through the air-cooled condenser, controls the opening of the electronic expansion valve 1 and the electronic expansion valve 2 according to the superheat, and reduces the pressure; absorbs the heat in the vehicle through the evaporator 1 and the evaporator 2 to achieve the cooling effect.

[0042] like Figure 3 As shown, the battery cooling mode includes refrigerant side, coolant side and radiator cooling;

[0043] On the refrigerant side: the compressor controls the electronic expansion valve 0 to be fully open through the three-way valve, releases heat to the environment or the cabin through the air-cooled condenser, and controls the chiller through the electronic expansion valve 3;

[0044] Coolant side: The battery controls WPTC through the water pump, WPTC controls Chiller through the four-way valve, and the battery is controlled through Chiller;

[0045] Radiator cooling: Water pump 2 is controlled by four-way valve. Electric drive control motor water pump control three-way valve control Radiator control four-way valve control Chiller control battery.

[0046] like Figure 4 As shown, the motor heat dissipation includes a water pump 2, a three-way valve, a radiator, and an electric drive. The three-way valve controls the water pump 2 through the radiator and the electric drive in turn.

[0047] like Figure 5 As shown, the in-vehicle air conditioning heating module includes an air source heat pump and a battery motor source heat pump;

[0048] Among them, the specific principles of air source heat pump include:

[0049] The compressor opens stop valve 1 through the three-way valve, controls indoor heat exchanger 1 and heat exchanger 2 to release heat into the vehicle, opens electronic expansion valve 0 through the three-way valve, calculates the expansion valve opening according to the superheat, and controls stop valve 2 to open by absorbing ambient heat through the air-cooled condenser;

[0050] Battery motor source heat pump, the specific principles include:

[0051] Refrigerant side: The compressor controls the stop valve 1 to open through the three-way valve, releases heat to the vehicle through the indoor heat exchanger 1 and the heat exchanger 2, controls the stop valve to open through the three-way valve, and calculates the expansion valve opening according to the superheat through the electronic expansion valve 3.

[0052] Coolant side: Water pump 1 is controlled by four-way valve, electric drive control motor, water pump control, three-way valve control, four-way valve control, Chiller control battery. Air conditioning heating (motor battery) Figure 6 shown.

[0053] The present invention discloses an air-conditioning heat pump system for utilizing the waste heat of a battery and a motor under a motorhome body. The waste heat of the battery and the motor is utilized, and a heat pump solution is adopted for the air-conditioning. Comfort can be met and the cruising range of the whole vehicle can be improved. When the vehicle is parked, an outdoor heat exchanger is adopted to absorb heat sources in the environment as a basis for the heat source of the heat pump. When cooling, the heat exchanger is separated from the battery and the motor to avoid the concentration of heat sources and the inability to effectively dissipate heat.

[0054] Those skilled in the art can understand that the above are only preferred examples of the invention and are not intended to limit the invention. Although the invention is described in detail with reference to the above examples, those skilled in the art can still modify the technical solutions recorded in the above examples or replace some of the technical features with equivalents. Any modification, equivalent replacement, etc. made within the spirit and principle of the invention should be included in the protection scope of the invention. All technical features in this embodiment can be freely combined according to actual needs.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air conditioning heat pump system utilizing waste heat from the battery motor under the motor vehicle, characterized in that: Including compressor, three-way valve 1, three-way valve 2, three-way valve 3, electronic expansion valve 0, air-cooled condenser, electronic expansion valve 1, electronic expansion valve 2, electronic expansion valve 3, evaporator 1, evaporator 2, water pump 1, WPTC, four-way valve, Chiller, battery, electric drive, water pump 2, stop valve 1, stop valve 2, stop valve 3, radiator, evaporator 1, evaporator 2, indoor heat exchanger 1, indoor heat exchanger 2, PTC1, PTC2; Among them, the output end of the compressor is connected to the input end of the three-way valve 1, the output end of the three-way valve 1 is respectively connected to the input end of the electronic expansion valve 0 and the input end of the stop valve 1, the output end of the stop valve 1 is respectively connected to the input end of the indoor heat exchanger 1 and the input end of the indoor heat exchanger 2, the output end of the indoor heat exchanger 1 and the output end of the indoor heat exchanger 2 are respectively connected to the input end of the three-way valve 2, the output end of the three-way valve 2 is connected to the input end of the three-way valve 1 and the input end of the electronic expansion valve 0, the three-way valve 2 is respectively connected to the input end of the stop valve 2 and the input end of the electronic expansion valve 3 through the stop valve 3, the output end of the electronic expansion valve 0 is connected to the input end of the air-cooled condenser, and the output end of the air-cooled condenser The ends are respectively connected to the input end of electronic expansion valve 1, the input end of electronic expansion valve 2 and the input end of electronic expansion valve 3, the output end of electronic expansion valve 3 is connected to the input end of Chiller, the output end of Chiller, the output end of evaporator 1, the output end of evaporator 2 and the output end of stop valve 2 are connected to the input end of compressor, the output end of Chiller is connected to the input end of Chiller through battery, water pump 1 and WPTC in sequence, the output end of electric drive is linked to the input end of three-way valve 3 through water pump 2, the output end of three-way valve 3 is respectively connected to the input end of radiator and the input end of electric drive, and the output end of radiator is also connected to the input end of electric drive.

2. The air conditioning heat pump system for utilizing the waste heat of the battery motor under the motor vehicle according to claim 1 is characterized in that: It includes four modes: air conditioning cooling, battery cooling, motor heat dissipation, and in-car air conditioning heating.

3. The air conditioning heat pump system for utilizing the waste heat of the battery motor under the motor vehicle according to claim 2 is characterized in that: The air conditioning refrigeration mode includes a compressor, a three-way valve, an electronic expansion valve 0, an air-cooled condenser, an electronic expansion valve 1, an electronic expansion valve 2, an evaporator 1, and an evaporator 2; The specific principles include: The compressor controls the electronic expansion valve 0 to be fully open through the three-way valve; releases heat to the environment or the cabin through the air-cooled condenser, controls the opening of the electronic expansion valve 1 and the electronic expansion valve 2 according to the superheat, and reduces the pressure; absorbs the heat in the vehicle through the evaporator 1 and the evaporator 2 to achieve the cooling effect.

4. The air conditioning heat pump system for utilizing the waste heat of the battery motor under the motor vehicle according to claim 2 is characterized in that: The battery cooling mode includes refrigerant side, coolant side and radiator cooling; On the refrigerant side: the compressor controls the electronic expansion valve 0 to be fully open through the three-way valve, releases heat to the environment or the cabin through the air-cooled condenser, and controls the chiller through the electronic expansion valve 3; Coolant side: The battery controls WPTC through the water pump, WPTC controls Chiller through the four-way valve, and the battery is controlled through Chiller; Radiator cooling: Water pump 2 is controlled by four-way valve. Electric drive control motor water pump control three-way valve control Radiator control four-way valve control Chiller control battery.

5. The air conditioning heat pump system for utilizing the waste heat of the battery motor under the motor vehicle according to claim 2 is characterized in that: The motor heat dissipation includes a water pump 2, a three-way valve, a radiator, and an electric drive. The three-way valve controls the water pump 2 through the radiator and the electric drive in turn.

6. The air conditioning heat pump system for utilizing the waste heat of the battery motor under the motor vehicle according to claim 2, characterized in that: The in-vehicle air conditioning heating module includes an air source heat pump and a battery motor source heat pump; Among them, the specific principles of air source heat pump include: The compressor opens stop valve 1 through the three-way valve, controls indoor heat exchanger 1 and heat exchanger 2 to release heat into the vehicle, opens electronic expansion valve 0 through the three-way valve, calculates the expansion valve opening according to the superheat, and controls stop valve 2 to open by absorbing ambient heat through the air-cooled condenser; Battery motor source heat pump, the specific principles include: Refrigerant side: The compressor controls the stop valve 1 to open through the three-way valve, releases heat to the vehicle through the indoor heat exchanger 1 and the heat exchanger 2, controls the stop valve to open through the three-way valve, and calculates the expansion valve opening according to the superheat through the electronic expansion valve 3. Coolant side: Water pump 1 controls the electric drive through the four-way valve to control the motor water pump control, three-way valve control, four-way valve control, Chiller control battery.

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