Integrated vehicle electric air conditioning device

Abstract

The utility model discloses an integrated vehicle electric air-conditioning device, which comprises an air-conditioning main body which comprises a shell, is arranged on the top of a passenger car and is provided with a compressor, a condenser and a main loop pipeline for connection; the driver position refrigerating and heating assembly is connected with the main loop pipeline and used for refrigerating and heating the driver position; the vehicle interior refrigerating and heating assembly is connected with the main loop pipeline, comprises an indoor heat exchanger and a fan which are mounted on a shell, and is used for refrigerating and heating the passenger position; and the battery pack refrigerating and heating assembly is connected with the main loop pipeline, comprises a battery pack heat exchanger and a battery pack heat exchange pipeline and is used for refrigerating and heating the battery pack. The cooling and heating device has the advantages that cooling and heating of the interior of the vehicle, the battery and the driver position are integrated, multiple functions are achieved, the requirements for battery cooling and driver position cooling can be met at the same time, and the battery arrangement position is greatly enlarged. The power-saving mode of the whole vehicle can be improved, the endurance mileage of the whole vehicle is increased, and the energy-saving effect is obvious.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to an integrated vehicle electric air conditioning device. Background Technology

[0002] The air conditioning systems in new energy vehicles are powered by energy storage batteries. Since the optimal operating temperature for the battery pack is 25℃~35℃, and the power battery is one of the key components of a pure electric vehicle, temperature has a significant impact on its overall performance and lifespan. To extend the lifespan of the power battery, improve its chemical performance and energy efficiency, and extend the vehicle's driving range, a properly matched battery cooling management system is necessary. This system cools the battery under high-temperature conditions and heats it under low-temperature conditions to maintain temperature balance, eliminate the risk of thermal runaway, and improve the overall performance of the electric vehicle. In existing technologies, different cooling systems are used for battery cooling, passenger area cooling, and driver area cooling, which occupies a large space and increases costs. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an integrated vehicle electric air conditioning device that can cool and heat the vehicle interior, vehicle battery and driver's seat, while also providing defrosting and defogging functions.

[0004] Specifically, this utility model discloses an integrated vehicle electric air conditioning device, comprising:

[0005] The air conditioning unit, including the housing, is installed on the top of the bus and has a compressor, condenser and main circuit pipes for connection thereon.

[0006] The driver's seat cooling and heating unit is connected to the main circuit piping, including the connecting pipes and the driver's seat heat exchanger, and is used to cool and heat the driver's seat.

[0007] The vehicle interior cooling and heating system, connected to the main circuit piping, includes an interior heat exchanger and a fan mounted on the housing, for cooling and heating of passenger areas;

[0008] A battery pack cooling and heating component, connected to the main circuit pipeline, includes a battery pack heat exchanger and battery pack heat exchange pipeline, used for battery pack cooling and heating;

[0009] The driver's seat cooling and heating components, the vehicle interior cooling and heating components, and the battery pack cooling and heating components are connected in parallel.

[0010] The advantages of adopting the above technical solution are that it integrates the cooling and heating functions of the vehicle interior, battery, and driver's seat, achieving multiple functions simultaneously. It can meet the cooling needs of the battery and driver's seat, and significantly expand the battery placement space. This can improve the vehicle's energy-saving mode, increase the vehicle's driving range, and result in significant energy-saving effects.

[0011] Furthermore, a four-way reversing valve, a pressure relief valve, an oil separator, and a main expansion valve are installed on the main circuit pipeline. The compressor outlet is connected to the pressure relief valve and the oil separator, and the four-way reversing valve is connected to the condenser.

[0012] The advantages of adopting the above technical solution are that the four-way reversing valve can control the refrigerant flow direction in the main circuit pipeline and switch between cooling and heating functions; the expansion valve plays a role in throttling and reducing pressure, and the pressure relief valve has the function of monitoring pressure.

[0013] Furthermore, the battery pack heat exchanger is equipped with a battery pack drain pipe and a battery pack return pipe for connection to the battery pack. The battery pack drain pipe is provided with a branch pipe, which is connected to a water tank. The battery pack drain pipe is also connected to a water pump and a filter.

[0014] The advantage of adopting the above technical solution is that the battery pack is cooled by setting up a battery pack water outlet pipe and a battery pack water return pipe, and the water tank is set up to replenish water through the battery pack water outlet pipe, ensuring that the water volume in the pipeline is normal.

[0015] Furthermore, a high-pressure sensor and a low-pressure sensor are installed on both sides of the compressor.

[0016] The advantage of adopting the above technical solution is that the high-pressure sensor and the low-pressure sensor are used to sense the pressure in the pipeline and at the same time play a role in detecting the working status of the compressor.

[0017] Furthermore, a dryer and a sight glass are also connected to the main circuit pipeline.

[0018] The advantage of adopting the above technical solution is that the dryer dries the refrigerant and prevents ice blockage in the pipeline.

[0019] Furthermore, a mounting plate and a condenser fan are provided on the side of the condenser.

[0020] The advantage of adopting the above technical solution is that the condenser fan plays a role in heat dissipation, ensuring the cooling and heating functions of the air conditioner.

[0021] Furthermore, both the driver's seat heat exchanger and the battery pack heat exchanger are connected to a secondary expansion valve.

[0022] Furthermore, the water tank is connected to an exhaust pipe.

[0023] Furthermore, the main circuit pipeline is also connected to a return capillary tube, which is connected to the oil separator.

[0024] The advantage of adopting the above technical solution is that lubricating oil plays a role in lubrication, sealing, cooling, and vibration damping in the compressor. If the oil return is blocked, it will lead to accelerated wear or even cylinder seizure in the compressor due to insufficient oil. The oil return capillary tube ensures the long-term stable operation of the compressor by continuously supplying oil.

[0025] Furthermore, both the indoor heat exchanger and the battery pack heat exchanger are connected to the housing, with the indoor heat exchanger located on both sides of the battery pack heat exchanger, and the fan disposed on the side of the indoor heat exchanger.

[0026] The advantages of adopting the above technical solution are that the structure is compact and the air volume is large. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0028] Figure 1 This is a schematic diagram of the overall installation structure of the integrated vehicle electric air conditioning unit of this utility model.

[0029] Figure 2 This is a schematic diagram of the overall connection of this utility model.

[0030] Figure 3 This is a refrigerant flow diagram of this utility model.

[0031] Figure 4 This is a circulation diagram of the battery pack cooling pipe of this utility model.

[0032] The reference numerals used in the attached figures are as follows:

[0033] Housing 1; Compressor 2; High-pressure sensor 21; Low-pressure sensor 22; Mounting plate 23; Condenser fan 24; Condenser 25; Dryer 26; Sight glass 27; Main circuit piping 3; Four-way reversing valve 31; Pressure relief valve 32; Oil separator 33; Main expansion valve 34; Oil return capillary tube 35; Valve core 36; Valve core two 37; Main return temperature sensor 38; Gas-liquid separator 39; Connecting piping 4; Driver's seat heat exchanger 41 ; Auxiliary expansion valve 42; Indoor heat exchanger 5; Fan 51; Battery pack heat exchanger 6; Battery pack heat exchange pipe 61; Return gas temperature sensor 611; Battery pack water outlet pipe 62; Outlet water temperature sensor 621; Battery pack return water pipe 63; Hydrothermal PTC heater 631; Branch pipe 1 64; Water tank 65; Water pump 1 66; Filter 67; Exhaust pipe 68; Battery cooling pipe 69; Battery pack 7; Three-way valve 71; Water supply pipe 72. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings.

[0035] As shown in the figure, this utility model discloses an integrated vehicle electric air conditioning device, comprising:

[0036] The air conditioning unit includes a housing 1, which is installed on the top of the bus. A compressor 2, a condenser 25 and a main circuit pipe 3 for connection are installed on the housing 1. An electrical control box is also installed on the housing 1.

[0037] The driver's seat cooling and heating unit is connected to the main circuit pipe 3, including the connecting pipe 4 and the driver's seat heat exchanger 41, and is used to cool and heat the driver's seat.

[0038] The vehicle interior cooling and heating components are connected to the main circuit pipe 3, including an indoor heat exchanger 5 and a fan 51 mounted on the housing 1, for cooling and heating of passenger positions;

[0039] The battery pack cooling and heating component is connected to the main circuit pipe 3, including the battery pack heat exchanger 6 and the battery pack heat exchange pipe 61, and is used for cooling and heating of the battery pack 7.

[0040] The driver's seat cooling and heating components, the vehicle interior cooling and heating components, and the battery pack cooling and heating components are connected in parallel.

[0041] The advantages of adopting the above technical solution are that it integrates the cooling and heating functions of the vehicle interior, battery, and driver's seat, achieving multiple functions simultaneously. It can meet the cooling needs of the battery and driver's seat, and significantly expand the battery placement space. This can improve the vehicle's energy-saving mode, increase the vehicle's driving range, and result in significant energy-saving effects.

[0042] The main circuit pipeline 3 is sequentially equipped with a compressor 2, a pressure relief valve 32, an oil separator 33, a valve core 36, a four-way reversing valve 31, a condenser 25, and a main expansion valve 34. The outlet of the compressor 2 is connected to the pressure relief valve 32 and the oil separator 33. The four-way reversing valve 31 is connected to the condenser 25. The main expansion valve 34 is connected to the indoor heat exchanger 5. Low pressure sensors 22 are installed on both sides of the compressor 2. A dryer 26 and a sight glass 27 are also connected to the main circuit pipeline 3.

[0043] The refrigerant in the main pipeline passes through compressor 2, pressure relief valve 32, high pressure sensor 21, oil separator 33, valve core 36, four-way reversing valve 31, condenser 25, dryer 26, sight glass 27, main expansion valve 34, and then returns through indoor heat exchanger 5, valve core 2 37, main return temperature sensor 38, low pressure sensor 22, and gas-liquid separator 39. The entire pipeline completes the heating or cooling function of the vehicle interior.

[0044] Furthermore, the main circuit pipeline 3 is also connected to an oil return capillary tube 35, which is connected to the oil separator 33. Lubricating oil in the compressor 2 performs functions such as lubrication, sealing, cooling, and vibration damping. If the oil return is obstructed, the compressor 2 will experience increased wear or even seizure due to insufficient oil. The oil return capillary tube 35 ensures the long-term stable operation of the compressor 2 by continuously supplying oil.

[0045] Furthermore, both the indoor heat exchanger 5 and the battery pack heat exchanger 6 are connected to the housing 1, which is locked to the roof of the vehicle. The indoor heat exchanger 5 is located on both sides of the battery pack heat exchanger 6. Fans 51 are fixedly installed on the side of the indoor heat exchanger 5, arranged symmetrically, with a quantity of 6-8. The air outlets of the fans 51 face the interior of the vehicle. Multiple fans 51 enable rapid cooling and heating of the passenger area inside the vehicle. The entire housing 1 is compactly arranged and occupies little space.

[0046] In some implementations, the entire battery pack heat exchanger 6 is connected to a secondary expansion valve 42 via a battery pack heat exchange pipe 61, which is connected in parallel with the indoor heat exchanger 5 and the main expansion valve. The battery pack heat exchanger 6 is equipped with a battery pack drain pipe 62 and a battery pack return pipe 63, forming a complete battery water-cooled pipeline for heat exchange within the battery pack heat exchanger 6. The battery pack drain pipe 62 and the battery pack return pipe 63 contain cooling water for connection to the battery pack 7. The battery pack drain pipe 62 is equipped with a branch pipe 64, which connects to a water tank 65. 5 is an expansion tank connected to an exhaust pipe 68, serving both water replenishment and venting functions. The battery pack drain pipe 62 connects to a water pump 66 and a filter 67. Both the water pump 66 and the water tank 65 are fixedly installed on the outside of the housing 1, not occupying internal space within the battery pack 7. The battery pack 7 contains multiple battery cooling pipes 69, including upper and lower cooling pipes, and is equipped with multiple three-way valves 71 and four-way valves for connection. A water replenishment pipe 72 is also provided for external water replenishment, and valves are also installed on the water replenishment pipe 72. Both the main expansion valve 34 and the auxiliary expansion valve 42 are electronic expansion valves, capable of precisely adjusting the cooling capacity according to changes in battery load, achieving constant water temperature control, and ensuring the battery remains at its optimal operating temperature.

[0047] The battery pack drain pipe 62 is equipped with a water outlet temperature sensor 621 and a valve core to sense the water outlet temperature and remove air from the cooling water. The battery pack return pipe 63 is also equipped with a water-heating PTC heater 631, which is fixedly installed on the side of the housing 1 to provide auxiliary heating and enable rapid heating of the battery pack 7 in cold weather.

[0048] In addition, a return gas temperature sensor 611 is installed on the battery pack heat exchange pipe 61. The return gas temperature sensor 611 is installed between the battery pack heat exchanger 6 and the four-way reversing valve 31 to monitor the temperature of the battery pack heat exchange pipe 61.

[0049] In some implementations, the condenser 25 is provided with a mounting plate 23 and a condensing fan 24 on its side. There are five condensing fans 24, which are locked onto the mounting plate 23. The mounting plate 23 is located on the outer side of the top of the vehicle body, so that the condenser 25 can exchange heat with the external environment.

[0050] In some implementations, the driver's seat heat exchanger 41 is connected to a secondary expansion valve 42. The driver's seat heat exchanger 41 is installed in the driver's cab and also has a fan for air outlet. It is also provided with air outlets facing the driver and facing the windows to realize the cooling and heating functions of the driver's seat and the defrosting and defogging functions of the windows.

[0051] During operation, when cooling or heating is needed inside the vehicle, the refrigerant circulates throughout the main circuit pipe 3, cooling or heating the vehicle interior through the indoor plate heat exchanger and fan 51. Simultaneously, when the vehicle battery needs cooling, the refrigerant flows to the battery pack heat exchange pipe 61, exchanging heat with the battery pack heat exchanger 6 to cool or heat the battery pack 7. Additionally, the refrigerant can reach the driver's cab through connecting pipe 4 to cool or heat the driver's seat and defrost the windows. This application reduces the space required for the battery cooling system, increasing the overall battery placement space and significantly reducing the overall vehicle procurement cost. It also integrates the needs for heat dissipation in the driver's seat during summer and heating in winter. Furthermore, it can defrost the windows.

[0052] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An integrated electric vehicle air conditioning unit, characterized by, The utility model relates to an air conditioner for passenger car, which comprises a shell (1) installed on the top of the passenger car, a compressor (2), a condenser (25) and a main circuit pipeline (3) for connection installed on the shell (1). The driver position refrigeration and heating assembly is connected with the main circuit pipeline (3) and comprises a connecting pipeline (4) and a driver position heat exchanger (41) for refrigeration and heating for the driver position. The vehicle interior refrigeration and heating assembly is connected with the main circuit pipeline (3) and comprises an indoor heat exchanger (5) and a fan (51) installed on the shell (1) for refrigeration and heating for the passenger position. The battery pack refrigeration and heating assembly is connected with the main circuit pipeline (3) and comprises a battery pack heat exchanger (6) and a battery pack heat exchange pipeline (61) for refrigeration and heating for the battery pack (7). The driver position refrigeration and heating assembly, the vehicle interior refrigeration and heating assembly and the battery pack refrigeration and heating assembly are connected in parallel. The main circuit pipeline (3) is provided with a four-way reversing valve (31), a pressure relief valve (32), an oil separator (33) and a main expansion valve (34), the outlet of the compressor (2) is connected with the pressure relief valve (32) and the oil separator (33), and the four-way reversing valve (31) is connected with the condenser (25).

2. The integrated vehicle electric air conditioning unit of claim 1, wherein, The battery pack heat exchanger (6) is provided with a battery pack water outlet pipe (62) and a battery pack water return pipe (63) for being connected with the battery pack (7), the battery pack water outlet pipe (62) is provided with a branch pipe (64), the branch pipe (64) is connected with a water tank (65), and the battery pack water outlet pipe (62) is connected with a water pump (66) and a filter (67).

3. The integrated vehicle electric air conditioning unit of claim 1, wherein, High-pressure sensors (21) and low-pressure sensors (22) are arranged on both sides of the compressor (2).

4. The integrated vehicle electric air conditioning unit of claim 1, wherein, The main circuit pipeline (3) is further connected with a dryer (26) and a sight glass (27).

5. The integrated vehicle electric air conditioning unit of claim 1, wherein, The condenser (25) is provided with a mounting plate (23) and a condenser fan (24) on the side.

6. The integrated vehicle electric air conditioning unit of claim 1, wherein, The driver position heat exchanger (41) and the battery pack heat exchanger (6) are both connected with a sub-expansion valve (42).

7. The integrated vehicle electric air conditioning unit of claim 1, wherein, The water tank (65) is connected with an exhaust pipe (68).

8. The integrated vehicle electric air conditioning unit of claim 3, wherein, The main circuit pipeline (3) is further connected with an oil return capillary tube (35), and the oil return capillary tube (35) is connected with the oil separator (33).

9. The integrated vehicle electric air conditioning unit of claim 2, wherein, The indoor heat exchanger (5) and the battery pack heat exchanger (6) are both connected with the shell (1), the indoor heat exchanger (5) is located on both sides of the battery pack heat exchanger (6), and the fan (51) is arranged on the side of the indoor heat exchanger (5).

10. The integrated vehicle electric air conditioning unit of claim 1, wherein, ​

Images