CN115320314A

CN115320314A - Dual-drive automobile air conditioning system

Info

Publication number: CN115320314A
Application number: CN202110510013.3A
Authority: CN
Inventors: 李啓明; 王新平
Original assignee: Luteshi Technology Co ltd
Current assignee: Luteshi Technology Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-11-11

Abstract

The invention discloses a dual-drive automobile air conditioning system, which comprises a compressor and a motor, wherein the motor comprises a stator and a rotor which can rotate relatively, the compressor comprises a rotating part, the stator of the motor comprises an iron core and a coil, the coil is connected with an electrode of a high-voltage power supply, the rotor of the motor and the rotating part of the compressor are connected in series through a driving shaft, the driving shaft is in transmission connection with an engine of an automobile when in use, the engine drives the rotating part and the rotor through the driving shaft when the automobile runs, and the motor is used as a generator to charge the high-voltage power supply; when the automobile is parked, the high-voltage power supply is right the coil power supply of stator, the motor is as the motor and passes through the drive shaft drive rotate the piece, and the engine need not idle running during parking, just also can not produce extra oil consumption, can not discharge tail gas pollution ambient air, can not form noise influence user experience for car silence, energy-conservation, environmental protection.

Description

Dual-drive automobile air conditioning system

Technical Field

The invention relates to the technical field of automobile air conditioners, in particular to a dual-drive automobile air conditioning system.

Background

The air conditioner is standard equipment of the automobile, and can refrigerate, heat, ventilate and purify the air in the carriage, so as to provide comfortable environment for drivers and passengers, reduce fatigue strength and improve driving safety.

In the normal running process of the automobile, the engine drives the compressor of the air conditioner to run and refrigerate. If the air conditioner is needed to be used continuously when the automobile is in a parking state, if a driver still needs to refrigerate when the driver has a rest at night and gets on/off a queue for waiting, the engine needs to be in an idling operation state, extra oil consumption and tail gas emission are caused, and meanwhile, the comfort level of a user can be reduced due to waste gas and noise generated by the engine.

Disclosure of Invention

In view of this, a dual-drive air conditioning system for a vehicle is provided to achieve parking cooling without starting an engine.

A dual-drive automobile air conditioning system comprises a compressor and a motor, wherein the motor comprises a stator and a rotor which can rotate relatively, the compressor comprises a rotating part, the stator of the motor comprises an iron core and a coil, the coil is connected with an electrode of a high-voltage power supply, the rotor of the motor and the rotating part of the compressor are connected in series through a driving shaft, the driving shaft is in transmission connection with an engine of an automobile when in use, the engine drives the rotating part and the rotor through the driving shaft when the automobile runs, and the motor is used as a generator to charge the high-voltage power supply; when the automobile is parked, the high-voltage power supply supplies power to the coil of the stator, and the motor serves as a motor and drives the rotating piece through the driving shaft.

Further, the high-voltage power supply is a 48V or above lithium battery pack.

Further, the high-voltage power supply is connected with a DC-DC module, and the DC-DC module is used for connecting a 12/24V system of an automobile.

Furthermore, the compressor is a swash plate type compressor, and comprises a swash plate and a plurality of pistons distributed around the swash plate, wherein the swash plate is used as the rotating piece and is fixedly connected with the driving shaft to synchronously rotate.

Furthermore, the motor is a permanent magnet synchronous motor, the rotor is fixedly sleeved on the driving shaft to rotate synchronously, and the stator is arranged around the rotor.

Further, motor and compressor are acceptd in a casing, the one end of drive shaft is worn out the casing is in order to be connected with a belt pulley, relatively the compressor is close to the belt pulley setting the motor is kept away from the belt pulley setting.

Further, the compressor is provided with bearings at positions of both side ends thereof, respectively, to support rotation of the driving shaft.

Further, the casing includes compressor housing and motor casing, compressor housing and motor casing pass through long screw fixed connection, the motor set up in the motor casing, the compressor set up in the compressor housing.

Compared with the prior art, the dual-drive automobile air conditioning system has the advantages that the compressor and the motor are connected in series through the driving shaft, the compressor is driven to refrigerate when the engine operates normally, and the motor is used as the generator to charge the high-voltage power supply; when the engine stalls, high voltage power supply is to the motor reverse power supply, and the motor refrigerates as motor drive compressor, and the engine need not idle running during the parking, just also can not produce extra oil consumption, can not discharge tail gas polluted environment air, can not form noise and influence user experience for car silence, energy-conservation, environmental protection.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a dual drive automotive air conditioning system according to the present invention.

Fig. 2 is an exploded view of the air conditioning system shown in fig. 1.

Fig. 3 is a cross-sectional view of the air conditioning system shown in fig. 1.

Fig. 4 is a circuit diagram of the air conditioning system shown in fig. 1.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. One or more embodiments of the present invention are illustrated in the accompanying drawings to provide a more accurate and thorough understanding of the disclosed embodiments. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein.

The same or similar reference numbers in the drawings correspond to the same or similar parts; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

The invention provides a dual-drive automobile air conditioning system which effectively solves the problem that an engine needs to run at an idle speed during parking refrigeration. As shown in fig. 1 to 3, the dual drive air conditioning system for vehicles according to an embodiment of the present invention includes a housing 10, a compressor 20, a motor 30, and a high voltage power supply 50. When the automobile runs normally, the engine drives the compressor 20 to refrigerate; when the automobile is parked, the motor 30 drives the compressor 20 to cool. The housing 10 is used for carrying the compressor 20 and the motor 30, and the compressor 20 and the motor 30 are sequentially arranged in the housing 10 along the axial direction and are connected in series through a driving shaft 40. The outer wall surface of the housing 10 is provided with a mounting portion 12 which can be fitted to other components in the automobile. In this embodiment, the casing 10 includes a compressor casing 22 and a motor casing 32, which are connected together by a long screw or the like.

The compressor 20 includes a swash plate 24 and pistons 26 mounted in a compressor housing 22, the pistons 26 being plural and disposed around the swash plate 24 to integrally constitute a swash plate type compressor. The compressor 20 is connected in series with an evaporator, a condenser, a throttle valve, etc. through pipelines to form a refrigerant circulation loop of the air conditioning system. The refrigerant is evaporated in the evaporator by heat absorption and is changed into low-temperature steam and is conveyed to the air inlet of the compressor 20; the compressor 20 applies work to the low-temperature steam to change the low-temperature steam into high-temperature gas and outputs the high-temperature gas from an exhaust port of the compressor; the output high-temperature gas is subjected to heat release condensation in the process of passing through the condenser and is changed into medium-temperature liquid; the medium temperature liquid is reduced in pressure through the throttle valve and changed into low temperature liquid, and the low temperature liquid returns to the evaporator to absorb heat again for evaporation, so that refrigeration is realized by continuous circulation. The evaporator, condenser, throttle valve, etc. may be selected from the existing devices on the market, and the specific structure thereof will not be described in detail herein.

The swash plate 24 of the compressor 20, as a rotating member thereof, is fixedly secured to the drive shaft 40 and rotates synchronously therewith, and the swash plate 24 reciprocates the pistons 26 in the axial direction during rotation thereof to apply work to the air in the cylinders. During the suction stroke of the piston 26, the pressure inside the cylinder decreases and the inlet port opens to suck in the low-temperature vapour delivered by the evaporator; during the exhaust stroke of the piston 26, the pressure within the cylinder increases and the exhaust port opens to output the hot gas to the condenser. Preferably, the angle of inclination of the swash plate 24 is variable, whereby the displacement of the compressor 20 can be adjusted. In the illustrated embodiment, the compressor housing 22 is provided with bearings 28 near both axial ends thereof, and the driving shaft 40 is rotatably inserted into the bearings 28, so that the rotation is smoother and the noise is less.

The drive shaft 40 includes opposite first and second link ends 42, 44, the first and second link ends 42, 44 respectively extending outwardly from opposite side ends of the compressor shell 22. The first connection end 42 is extended out from the side end of the compressor 20 opposite to the motor 30, and is in transmission connection with the engine through a pulley or the like for power transmission, so that the engine can drive the driving shaft 40 to rotate. The second connecting end 44 extends toward the motor 30 and is drivingly connected to the rotor 34 of the motor 30 such that rotation of the rotor 34 causes the drive shaft 40 to rotate therewith, or rotation of the drive shaft 40 causes the rotor 34 to rotate therewith. The compressor 20 can be driven by the engine or the motor 30 according to the state of the vehicle, and a parking air-conditioning switch interlocked with an air-conditioning switch (such as an a/C) can be added on the control panel of the vehicle to start the motor 30, ensuring good compatibility.

The motor 30 is preferably a Permanent Magnet Synchronous Motor (PMSM) mounted within a motor housing 32. The rotor 34 of the motor 30 is fixedly secured to the drive shaft 40 and the stator 36 is disposed around the rotor 34. The stator 36 includes a stator core and a coil wound on the stator core; the rotor 34 includes a rotor core 37 and a permanent magnet 38, and a shaft hole 39 is formed in the center of the rotor core 37 for passing a driving shaft 40. In the illustrated embodiment, the permanent magnet 38 has an Interior Permanent Magnet (IPM) structure, that is, the permanent magnet 38 is inserted into the rotor core 37. It should be understood that the permanent magnet 38 may also be a surface mount type (SPM) structure, i.e., the permanent magnet 38 is attached to the outer circumferential surface of the rotor core 37. The motor 30 can be used as a motor or a generator, the rotor 34 rotates under the action of external force, and forms relative motion of cutting magnetic lines with the stator 36, so that the coil of the stator 36 generates induction potential to form a generator; the coils are energized to generate a magnetic field which is acted with the magnetic field of the permanent magnet 38 of the rotor 34, and the rotor 34 is pushed to rotate continuously to form the motor. When the motor 30 is used as a motor, the compressor 20 can be driven to operate and refrigerate; the high voltage power supply 50 may be charged when the motor 30 is acting as a generator.

Referring to fig. 4, the high voltage power source 50 may be a lithium battery pack or the like, and the standard voltage is 48V or more. The high voltage power supply 50 is disposed outside the housing 10 and electrically connected to the coil of the motor 30 through a wire or the like. During normal driving of the vehicle, the motor 30 serves as a generator to charge the high voltage power supply 50. Specifically, the motor drives the compressor 20 through the driving shaft 40 to perform cooling operation, and at this time, the rotor 34 fixedly connected to the driving shaft 40 cuts magnetic lines as the driving shaft 40 rotates, and an induced potential is generated in the coil of the stator 36 to charge the high voltage power supply 50 connected thereto. When the automobile is parked, the engine is turned off, the high-voltage power supply 50 is used as a power supply to reversely supply power to the coil of the motor 30, the coil is electrified to generate a magnetic field to push the rotor 34 to rotate, and then the compressor 20 is driven to refrigerate through the driving shaft 40.

Preferably, the high voltage power supply 50 is electrically connected to a 12/24V system (including a 12/24V battery, a starter, an ignition system, a lighting system, etc.) of the vehicle through a DC-DC module 52, etc., so that the high voltage power supply 50 can be used as an auxiliary power supply of the 12/24V system, and the voltage is reduced through the DC-DC module, and the auxiliary power supply is charged when the 12/24V system is in a power failure state, thereby improving the redundancy of the vehicle power supply system. According to the invention, through the bidirectional action of the motor 30 and the high-voltage power supply 50, a generator is not additionally arranged to charge the 12/24V battery, and the high-voltage power supply 50 is charged and discharged with a smaller multiplying power, so that the working condition of the battery is improved, and the service life of the battery is prolonged. In addition, the power system formed by the 48V high-voltage power supply 50 belongs to a safer system, can be directly short-circuited by fingers without electric shock, and is convenient for a vehicle owner to change the power by himself.

The dual-drive automobile air conditioning system is connected with the compressor 20 and the motor 30 in series through the driving shaft 40, when an automobile normally runs, the compressor 20 is driven by the engine to refrigerate, and meanwhile, the motor 30 is used as a generator to charge the high-voltage power supply 50; when the automobile is parked, the engine can be directly shut off, and at this time, the motor 30 is rotated under the power supplied by the high-voltage power supply 50 to drive the compressor 20 to operate and refrigerate. Therefore, the automobile can be refrigerated by the compressor 20 driven by the high-voltage power supply 50 under the condition that the automobile is not parked, and the refrigeration requirements under the conditions that a driver has a rest at night, gets in/out of a queue and waits are met. The compressor 20 is driven to operate by the high-voltage power supply 50, the automobile does not need to operate at an idle speed, extra oil consumption is not generated, tail gas cannot be discharged to pollute the ambient air, noise cannot be generated to influence the user experience, and the automobile is silent, energy-saving and environment-friendly.

In the above embodiment, the present invention is described by taking a swash plate type compressor as an example, and it should be understood that the compressor 20 may be any conventional compressor, such as a scroll compressor, and the like, as long as the rotary member thereof is connected to the drive shaft 40. In addition, in the above embodiment, the compressor 20 is disposed near the pulley between the motor 30 and the pulley, and in other embodiments, the motor 30 may be disposed between the compressor 20 and the pulley. According to the invention, through the serial connection of the driving shaft 40, the compressor 20 can be driven by an engine, a belt pulley and the like to refrigerate and the motor 30 to generate electricity, the compressor 20 can also be driven by the motor 30 to refrigerate, two operation modes of engine belt driving and built-in motor driving are integrated, the parking refrigeration is realized, the existing automobile air conditioner refrigeration is compatible, the whole structure is compact, the energy is saved, and the environment is protected.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.

Claims

1. A dual-drive automobile air conditioning system comprises a compressor and a motor, wherein the motor comprises a stator and a rotor which can rotate relatively, and the compressor comprises a rotating part; when the automobile is parked, the high-voltage power supply supplies power to the coil of the stator, and the motor serves as a motor and drives the rotating piece through the driving shaft.

2. The dual drive automotive air conditioning system of claim 1, wherein the high voltage power supply is a 48V or higher lithium battery pack.

3. The dual drive automotive air conditioning system of claim 1, wherein the high voltage power supply is connected to a DC-DC module, the DC-DC module being adapted to connect to a 12/24V system of an automotive vehicle.

4. The dual drive automotive air conditioning system according to claim 1, wherein said compressor is a swash plate type compressor comprising a swash plate and a plurality of pistons distributed around said swash plate, said swash plate serving as said rotating member and being fixedly connected to said drive shaft so as to rotate synchronously.

5. The dual-drive automobile air conditioning system according to claim 1, wherein the motor is a permanent magnet synchronous motor, the rotor is fixedly sleeved on the driving shaft to synchronously rotate, and the stator is arranged around the rotor.

6. The dual-drive automobile air conditioning system according to claim 4 or 5, wherein the motor and the compressor are housed in a housing, one end of the driving shaft penetrates out of the housing to be connected with a belt pulley, and the compressor is disposed close to the belt pulley and the motor is disposed away from the belt pulley.

7. The dual drive air conditioning system for vehicles according to claim 6, wherein said compressor is provided with bearings at both side ends thereof to support the rotation of said driving shaft.

8. The dual drive automotive air conditioning system of claim 7, wherein the housing includes a compressor housing and a motor housing, the compressor housing and the motor housing being fixedly connected by a long screw, the motor being disposed within the motor housing, the compressor being disposed within the compressor housing.