Integrated electric compressor and vehicle

Abstract

The utility model discloses an integrated electric compressor. The integrated electric compressor comprises a motor; a first compressor connected to and driven by the motor; the integrated electric compressor is characterized in that the integrated electric compressor comprises a second compressor and a controller; the second compressor is connected to the motor and is driven by the motor; the controller is arranged on the motor and is configured to control starting and stopping of the motor, control the flowing direction of a medium in the first compressor and control the flowing direction of a medium in the second compressor. The utility model further discloses a vehicle. The vehicle comprises the integrated electric compressor.

Description

Technical Field

[0001] This application relates to the field of mechanical engineering, and particularly to an integrated electric compressor for vehicles and a vehicle including the integrated electric compressor. Background Art

[0002] For a long time, the field of electric compressors has been characterized by equipment designed for specific tasks, where each device only compresses one medium and provides a limited pressure range. This specialization results in inefficiencies in applications that require multiple compression functions, such as automotive systems that need both air suspension and refrigeration simultaneously. Using multiple dedicated compressors increases costs, complexity, and space requirements, while also posing challenges for noise, vibration, and electromagnetic compatibility management.

[0003] The limitations of existing compressors have prompted technicians to desire the development of a more comprehensive and highly integrated solution. An ideal compressor should be able to handle multiple media, provide a wider pressure range, and operate in various modes to meet different needs. Such a device can simplify the system, reduce costs, and improve overall efficiency. Integrating multiple functions into one device can also simplify design and manufacturing, thus providing a more compact and reliable solution. Summary of the Utility Model

[0004] To solve the problems in the prior art, this application proposes an integrated electric compressor that integrates multiple compression functions into a compact device, thus solving the above technical problems.

[0005] This application discloses an integrated electric compressor, including: a motor; a first compressor connected to and driven by the motor; characterized in that the integrated electric compressor includes a second compressor and a controller; the second compressor is connected to and driven by the motor; and the controller is disposed on the motor and configured to control the start and stop of the motor, control the flow direction of the medium in the first compressor, and control the flow direction of the medium in the second compressor.

[0006] According to an optional embodiment, the first compressor and the second compressor are disposed on opposite sides of the motor; the motor includes an air inlet, a stator, a rotor, a first crankshaft, and a second crankshaft; the air inlet is disposed on the outer shell of the motor and is in fluid communication with the inner cavity of the motor; the stator and the rotor are respectively disposed in the inner cavity of the motor; the first crankshaft extends from the rotor into the first compressor; and the second crankshaft extends from the rotor into the second compressor.

[0007] According to an alternative embodiment, the first compressor includes a first control valve; and the first control valve is configured to be operably movable between a plurality of positions to change the flow direction of the medium in the first compressor, thereby changing the work done state of the first compressor without changing the operating state of the motor.

[0008] According to an alternative embodiment, the second compressor includes a second control valve; and the second control valve is configured to be operably movable between a plurality of positions to change the flow direction of the medium in the second compressor, thereby changing the work done state of the second compressor without changing the operating state of the motor.

[0009] According to an alternative embodiment, the motor includes a stator, a rotor, a motor shaft, and a low-pressure air inlet; the stator and the rotor are respectively disposed in the inner cavity of the motor; the motor shaft is fixed to the rotor or integrally formed with the rotor; and the low-pressure air inlet is disposed on the outer shell of the motor and connected to the inner cavity of the motor.

[0010] According to an alternative embodiment, the integrated electric compressor includes a compressor section, a diverter, a piston connector, a fourth compression chamber, a fifth compression chamber, a sixth compression chamber, a fourth piston, a fifth piston, and a sixth piston; the piston connector is slidably disposed in the compressor section and connected to the motor via the diverter; the fourth compression chamber, the fifth compression chamber, and the sixth compression chamber are respectively disposed in the fourth compression chamber, the fifth compression chamber, and the sixth compression chamber and respectively connected to the piston connector; the fifth compression chamber and the sixth compression chamber are respectively connected to the fourth compression chamber; the fourth piston and the fourth compression chamber, the fifth piston and the fifth compression chamber constitute the first compressor; and the sixth piston and the sixth compression chamber constitute the second compressor.

[0011] According to an alternative embodiment, the integrated electric compressor includes a third control valve; and the third control valve is configured to be operably movable between a plurality of positions to change the flow direction of the medium in the compressor section, thereby changing the work done state of the first compressor without changing the operating state of the motor.

[0012] According to an alternative embodiment, the integrated electric compressor includes a fourth control valve; and the fourth control valve is configured to be operably movable between a plurality of positions to change the flow direction of the medium in the compressor section, thereby changing the work done state of the second compressor without changing the operating state of the motor.

[0013] According to an alternative embodiment, the first compressor and the second compressor compress the same medium.

[0014] According to an alternative embodiment, the first compressor and the second compressor compress different media.

[0015] The present application also discloses a vehicle, characterized in that it includes the integrated electric compressor described above.

[0016] The design of sharing a single motor and controller reduces costs and complexity while providing operational flexibility. The ability to compress different media or the same medium simultaneously or independently opens up new possibilities for system design and optimization. The integration of refrigerant flow through the motor for cooling and heat recovery further improves the efficiency and applicability of the present application, making it a promising solution with wide applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The foregoing and other aspects of the present application will be more fully understood from the following detailed description in conjunction with the accompanying drawings below. It should be noted that the scales of the respective drawings may be different for the purpose of clear illustration, but this will not affect the understanding of the present application.

[0018] Figure 1 is a side view of an integrated electric compressor for a vehicle according to a first embodiment of the present application.

[0019] Figure 2 is Figure 1 a top view of the integrated electric compressor of

[0020] Figure 3 is Figure 2 a sectional view of the integrated electric compressor of

[0021] Figure 4 is Figure 2 a sectional view of the integrated electric compressor of

[0022] Figure 5 is Figure 1 a sectional view of the integrated electric compressor of

[0023] Figure 6 is Figure 1 a sectional view of the integrated electric compressor of

[0024] Figure 7 is a top view of an integrated electric compressor for a vehicle according to a second embodiment of the present application.

[0025] Figure 8 is Figure 7 a sectional view of the integrated electric compressor of

[0026] Figure 9 isFigure 8 Partial enlarged view of an integrated electric compressor

[0027] Figure 10 is Figure 7 Cross-sectional view of the integrated electric compressor taken along line C-C.

[0028] Figure 11 is Figure 7 Side view of the integrated electric compressor.

[0029] Figure 12 is Figure 11 Cross-sectional view of the integrated electric compressor taken along line B-B.

[0030] Figure 13 is Figure 7 Side view of the integrated electric compressor.

[0031] Figure 14 is Figure 13 Cross-sectional view of the integrated electric compressor taken along line D-D. Detailed implementation manners

[0032] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be fully conveyed to those skilled in the art.

[0033] It should be noted that the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements.

[0034] Figure 1 is a side view of an integrated electric compressor for a vehicle according to the first embodiment of the present application. As Figure 1 shown, the integrated electric compressor 100 includes a refrigerator compressor 1, an air suspension compressor 2, a motor 3, and a controller 4. The motor 3 is connected to the refrigerator compressor 1 and the air suspension compressor 2 to provide power to the refrigerator compressor 1 and the air suspension compressor 2. In the first embodiment, the refrigerator compressor 1 and the air suspension compressor 2 are respectively arranged on opposite sides of the motor 3. It can be understood that in other embodiments, the refrigerator compressor 1 and the air suspension compressor 2 can also be arranged on the same side of the motor 3. The controller 4 is integrated on the motor 3 to control the start and stop of the motor 3.

[0035] Figure 2 is Figure 1 the top view of an integrated electric compressor of Figure 3 is Figure 2 the sectional view of the integrated electric compressor of Figure 4 is Figure 2 the sectional view of the integrated electric compressor of Figure 2 and Figure 3 shown, the motor 3 includes an air inlet 7, a stator 8, a rotor 56, a first crankcase 9, a first crankshaft 55 and a second crankshaft 52. The air inlet 7 is provided on the outer shell of the motor 3 and is in fluid communication with the inner cavity of the motor 3. The stator 8, the rotor 56 and the first crankcase 9 are provided in the inner cavity of the motor 3. The stator 8 is fixed to the inner wall of the motor 3. The rotor 56 is rotatably provided inside the stator 8. The first crankcase 9 is provided between the rotor 56 and the refrigerator compressor 1 to transfer the power of the rotor 56 to the refrigerator compressor 1. A part of the first crankshaft 55 is provided in the first crankcase 9, and the other part is provided in the refrigerator compressor 1 and is fixed to the rotor 56 at one end. The second crankshaft 52 is provided in the air suspension compressor 2 and is fixed to the rotor 56 at one end.

[0036] As Figure 4As shown, the refrigerator compressor 1 includes a first control valve 5, an intake passage 10, a suction chamber 11, a first suction valve 12, a first compression chamber 13, a first piston 14, an exhaust hole 15, an exhaust chamber 16, an exhaust pipe 17, a first control pin 18, a bypass pipe 19, a bypass hole 20, a bypass valve 21, and a balance weight 57. The first control valve 5 is embedded in the housing of the refrigerator compressor 1 to change the flow direction of the refrigerant in the refrigerator compressor 1 based on a signal from the controller 4. The intake passage 10 is provided inside the housing of the refrigerator compressor 1 and is connected to the first crankcase 9. The suction chamber 11 is provided inside the housing of the refrigerator compressor 1 and is connected to the intake passage 10. The first compression chamber 13 is provided inside the housing of the refrigerator compressor 1 and is connected to the suction chamber 11. The first suction valve 12 is provided between the suction chamber 11 and the first compression chamber 13. The first piston 14 is slidably provided in the first compression chamber 13. The exhaust hole 15 is connected to the first compression chamber 13 to discharge the compressed refrigerant. The exhaust chamber 16 is connected to the exhaust hole 15. The exhaust pipe 17 is connected between the exhaust chamber 16 and the refrigeration pipe (not shown) of the refrigerator system to deliver the compressed refrigerant into the refrigeration pipe. The bypass pipe 19 is connected to the first compression chamber 13. The bypass hole 20 is connected between the bypass pipe 19 and the first crankcase 9. The first control pin 18 is connected to the first control valve 5 and selectively blocks the bypass hole 20. The bypass valve 21 is provided in the bypass pipe 19 to prevent the refrigerant in the bypass pipe 19 and the bypass hole 20 from flowing back into the first compression chamber 13. The balance weight 57 is provided on the second crankshaft 52 to balance the inertia of the first piston 14 and reduce the vibration generated when the first piston 14 reciprocates.

[0037] The working principle of the integrated electric compressor 100 is described below.

[0038] After the refrigerator compressor 1 is started, the refrigerant enters the inner cavity of the motor 3 through the intake port 7, exchanges heat with the stator 8, and then enters the first crankcase 9. The refrigerant enters the suction chamber 11 from the first crankcase 9 through the intake passage 10, and then enters the first compression chamber 13 through the first suction valve 12. The refrigerant is compressed by the first piston 14 in the first compression chamber 13, and then enters the exhaust chamber 16 through the exhaust hole 15. The compressed refrigerant enters the refrigeration pipe of the refrigerator system from the exhaust chamber 16 through the exhaust pipe 17 for refrigeration.

[0039] When the refrigerator compressor 1 does not need to work, if the air suspension compressor 2 still needs to work, the integrated electric compressor 100 enters the single air suspension compressor mode. In the single air suspension compressor mode, the first control valve 5 is opened (at Figure 4(Moving to the right in the figure). At this time, the first control pin 18 connected to the first control valve 5 moves to the right, opening the bypass hole 20. When the first piston 14 moves downward, the refrigerant directly returns to the crank chamber 9 through the bypass pipe 19 and the bypass hole 20. In this case, there is no pressure difference between the suction and discharge of the refrigerator compressor 1, so no work is done.

[0040] Figure 5 is Figure 1 A sectional view of the integrated electric compressor along the C-C line. Figure 6 is Figure 1 A sectional view of the integrated electric compressor along the D-D line. As Figure 1 、 3As shown in FIGS. 5 and 6, the air suspension compressor 2 includes a second control valve 6, an air filter 28, a first intake hole 29, a second crankcase 30, a second piston 31, a second intake hole 32, a second suction valve 33, a second compression chamber 34, a first exhaust valve 35, a first exhaust passage 36, a third suction valve 37, a third compression chamber 38, a third piston 39, a second exhaust passage 40, a second exhaust valve 41, a dryer 42, a high-pressure gas passage 43, an adapter 44, a second control pin 45, a third control pin 46, a third exhaust passage 47, a fourth exhaust passage 48, a muffler 49, a fifth exhaust passage 50, a sixth exhaust passage 51, and a bearing 53. The second control valve 6 is embedded in the housing of the air suspension compressor 2 to change the flow direction of the air in the air suspension compressor 2 based on the signal from the controller 4. The air filter 28 is provided on the housing of the air suspension compressor 2. The first intake hole 29 is connected between the air filter 28 and the inner cavity of the air suspension compressor 2. The second crankcase 30, the second compression chamber 34, and the third compression chamber 38 are provided in the inner cavity of the air suspension compressor 2. The second crankcase 30 is connected to the first intake hole 29. The second compression chamber 34 and the third compression chamber 38 are respectively connected to opposite sides of the second crankcase 30. A part of the second piston 31 is slidably provided in the second compression chamber 34, and another part is provided in the second crankcase 30. A part of the third piston 39 is slidably provided in the third compression chamber 38, and another part is provided in the second crankcase 30 and is connected to the part of the second piston 31 provided in the second crankcase 30. The second piston 31 and the third piston 39 jointly define an elongated piston inner hole 54. The second intake hole 32 is provided on the second piston 31 and is connected to the second crankcase 30. The second suction valve 33 is provided at the end of the second intake hole 32. The second compression chamber 34 is connected to the second crankcase 30. The first exhaust passage 36 is connected between the second compression chamber 34 and the third compression chamber 38. The first exhaust valve 35 is provided between the first exhaust passage 36 and the second compression chamber 34. The third suction valve 37 is provided between the first exhaust passage 36 and the third compression chamber 38. The dryer 42 is connected to the main body of the air suspension compressor 2. The second exhaust passage 40 is connected between the third compression chamber 38 and the intake port of the dryer 42. The second exhaust valve 41 is provided between the second exhaust passage 40 and the dryer 42. The high-pressure gas passage 43 is connected to an exhaust port of the dryer 42. The adapter 44 is connected between the high-pressure gas passage 43 and the air suspension system (not shown). The third control pin 46 is connected to one end of the second control pin 45. The second control pin 45 is connected to the second control valve 6 at the other end.

[0041] The third exhaust passage 47 is connected to another exhaust port of the dryer 42. The fourth exhaust passage 48 is connected to the third exhaust passage 47. The fifth exhaust passage 50 is connected between the first exhaust passage 36 and the second exhaust passage 40. One end of the sixth exhaust passage 51 is connected to the junction of the first exhaust passage 36 and the fifth exhaust passage 50, and the other end is connected to the second crankcase 30. The bearing 53 is fixed on the second crankshaft 52 and is slidably disposed in the piston inner bore 54. Due to the presence of the bearing 53, the rotation of the second crankshaft 52 can be converted into the reciprocating motion of the bearing 53 in the piston inner bore 54 in the first direction, the reciprocating motion of the second piston 31 in the second compression chamber 34, and the reciprocating motion of the third piston 39 in the third compression chamber 38. The second control pin 45 is disposed at the junction of the third exhaust passage 47 and the fourth exhaust passage 48 to selectively block the connection therebetween. The third control pin 46 is disposed at the junction of the first exhaust passage 36, the fifth exhaust passage 50, and the sixth exhaust passage 51 to selectively block the connection therebetween.

[0042] The second control valve 6 has three positions. In the first position, the second control pin 45 connected to the second control valve 6 blocks the connection between the third exhaust passage 47 and the fourth exhaust passage 48, and the third control pin 46 connected to the second control pin 45 enables the first exhaust passage 36, the fifth exhaust passage 50, and the sixth exhaust passage 51 to communicate. In the second position, the second control pin 45 connected to the second control valve 6 blocks the connection between the third exhaust passage 47 and the fourth exhaust passage 48, and the third control pin 46 connected to the second control pin 45 blocks the connection between the first exhaust passage 36, the fifth exhaust passage 50, and the sixth exhaust passage 51. In the third position, the second control pin 45 connected to the second control valve 6 enables the third exhaust passage 47 and the fourth exhaust passage 48 to communicate, and the third control pin 46 connected to the second control pin 45 enables the first exhaust passage 36, the fifth exhaust passage 50, and the sixth exhaust passage 51 to communicate.

[0043] The working principle of the integrated electric compressor 100 is described below.

[0044] After the air suspension compressor 2 starts, air passes through the air filter 28 and enters the second crankcase 30 from the first air inlet hole 29. The air enters the second compression chamber 34 from the second crankcase 30 via the second air inlet hole 32 and the second suction valve 33. The air is compressed to medium pressure in the second compression chamber 34, and then enters the third compression chamber 38 via the first exhaust valve 35, the first exhaust passage 36 and the third suction valve 37. The medium-pressure air is compressed to a high-pressure state in the third compression chamber 38 by the third piston 39. The high-pressure gas enters the dryer 42 from the third compression chamber 38 via the second exhaust passage 40 and the second exhaust valve 41. The gas is dried in the dryer 42 and then transported to the air suspension system via the high-pressure gas passage 43 and the adapter 44.

[0045] When the pressure in the air suspension system is sufficient, the air suspension compressor 2 should stop working. At this time, if the refrigerator compressor 1 still needs to continue working, the integrated electric compressor 100 enters the single refrigerator compressor working mode. When there is too much moisture in the dryer 42, the second control valve 6 moves to the third position. In the third position, the third exhaust passage 47 and the fourth exhaust passage 48 are connected, so that the high-pressure and dry gas in the air suspension system is back blown into the dryer 42 via the high-pressure gas passage 43 to take away the moisture in the dryer 42, and then enters the fourth exhaust passage 48 via the third exhaust passage 47, and finally is discharged into the atmosphere through the silencer 49. After the back blowing of the dryer 42 is completed, the second control valve 6 moves to the first position to block the connection between the third exhaust passage 47 and the fourth exhaust passage 48, and makes the first exhaust passage 36, the fifth exhaust passage 50 and the sixth exhaust passage 51 remain connected. In this way, the pressure in the second exhaust passage 40 is the same as that in the first exhaust passage 36, and there is no pressure difference between suction and exhaust, which is equivalent to the third compression chamber 38 not doing work. Since the sixth exhaust passage 51 is connected to the second crankcase 30, and at this time the first exhaust passage 36 is also connected to the second crankcase 30, there is no pressure difference between suction and exhaust in the second compression chamber 34, which is equivalent to the second compression chamber 34 not doing work either.

[0046] Figure 7 is a top view of an integrated electric compressor for a vehicle according to a second embodiment of the present application. Figure 8 is Figure 7 a sectional view of the integrated electric compressor along line A-A. Figure 9 is Figure 8 a partial enlarged view of the integrated electric compressor. Figure 10 is Figure 7 a sectional view of the integrated electric compressor along line C-C. As Figure 7 - 10As shown, the integrated electric compressor 200 includes a compressor section 60, an electric motor 61, and a controller 85. The compressor section 60 is connected to the electric motor 61 and includes a first compressor 60a and a second compressor 60b integrated in the same housing. In this way, the first compressor 60a and the second compressor 60b can be regarded as being arranged on the same side of the electric motor 61. The controller 85 is integrated on the electric motor 61 to control the start and stop of the electric motor 61.

[0047] The electric motor 61 includes a stator 93a, a rotor 93b, a motor shaft 65, and a low-pressure air inlet 59. The stator 93a, the rotor 93b, and the motor shaft 65 are arranged in the inner cavity of the electric motor 61. The stator 93a is fixed to the inner wall of the electric motor 61. The rotor 93b is rotatably arranged inside the stator 93a. The motor shaft 65 is fixed to the rotor 93b or integrally formed with the rotor 93b. The low-pressure air inlet 59 is arranged on the outer shell of the electric motor 61 and is connected to the inner cavity of the electric motor 61.

[0048] The integrated electric compressor 200 further includes a fourth piston 62, a fifth piston 63, a sixth piston 64, a reversing device 66, a piston connector 67, a sliding ball 68, a sliding groove 69, an intake pipe 70, a connector 71, a rear cover 72, a valve plate 73, a fourth intake valve 74, a fourth compression chamber 75, a third exhaust valve 76, a medium-pressure passage 77, a fifth intake valve 78, a fifth compression chamber 79, a seventh exhaust passage 80, a fourth exhaust valve 81, a dryer 82, an eighth exhaust passage 83, a adapter 84, a sixth compression chamber 96, and an exhaust pipeline 97. The fourth piston 62, the fourth compression chamber 75, the fifth piston 63, and the fifth compression chamber 79 together constitute the first compressor 60a. The sixth piston 64 and the sixth compression chamber 96 constitute the second compressor 60b.

[0049] The fourth compression chamber 75, the fifth compression chamber 79, and the sixth compression chamber 96 are respectively arranged in the compressor section 60. The fifth compression chamber 79 and the sixth compression chamber 96 are respectively connected to the fourth compression chamber 75. The fourth piston 62 is slidably arranged in the fourth compression chamber 75. The fifth piston 63 is slidably arranged in the fifth compression chamber 79. The sixth piston 64 is slidably arranged in the sixth compression chamber 96. The reverser 66 is connected to the motor shaft 65 and is provided with a curved and extended chute 69. The piston connector 67 is connected to the fourth piston 62, the fifth piston 63, and the sixth piston 64 and is connected to the reverser 66 via the sliding ball 68. A part of the sliding ball 68 is embedded in the piston connector 67, and the other part is slidably arranged in the chute 69. The rear cover 72 is arranged at the end of the compressor section 60. The valve plate 73 is arranged between the rear cover 72 and the fourth compression chamber 75 to enclose the fourth compression chamber 75. The connector 71 is arranged on the rear cover 72. The suction pipe 70 is connected between the connector 71 and the external environment. The fourth suction valve 74 is arranged on the valve plate 73 and is connected to the connector 71. The medium-pressure passage 77 is connected between the fourth compression chamber 75 and the fifth compression chamber 79. The third exhaust valve 76 is arranged at the connection of the medium-pressure passage 77 and the fourth compression chamber 75. The fifth suction valve 78 is arranged at the connection of the medium-pressure passage 77 and the fifth compression chamber 79. The dryer 82 is connected to the compressor section 60. The seventh exhaust passage 80 is connected between the dryer 82 and the fifth compression chamber 79. The fourth exhaust valve 81 is arranged at the connection of the seventh exhaust passage 80 and the dryer 82. The eighth exhaust passage 83 is connected between the air suspension system (not shown) and the dryer 82. The adapter 84 is arranged at the connection of the eighth exhaust passage 83 and the air suspension system. The exhaust pipeline 97 is connected between the sixth compression chamber 96 and the refrigerant pipeline of the refrigerator system (not shown).

[0050] The working principle of the integrated electric compressor 200 is described below.

[0051] After the motor 61 is started, the motor shaft 65 drives the reverser 66 to rotate, causing the sliding ball 68 on the piston connector 67 to slide in the chute 69 on the reverser 66, so as to convert the rotational motion of the motor shaft 65 into the reciprocating motion of the piston connector 67.

[0052] When the second compressor 60b does not need to operate, if the first compressor 60a still needs to operate, the integrated electric compressor 200 enters the single air suspension compressor mode. In the single air suspension compressor mode, air passes through the suction pipe 70 and the connector 71, passes through the rear cover 72, and is then sucked into the fourth compression chamber 75 through the fourth suction valve 74 on the valve plate 73. The air is compressed to a medium pressure state in the fourth compression chamber 75, then enters the medium pressure passage 77 through the third exhaust valve 76, and then enters the fifth compression chamber 79 through the fifth suction valve 78. The air is compressed to a high pressure state in the fifth compression chamber 79, and then enters the dryer 82 through the seventh exhaust passage 80 and the fourth exhaust valve 81. The gas is dried in the dryer 82, and then enters the air suspension system through the eighth exhaust passage 83 and the adapter 84.

[0053] Figure 11 is Figure 7 The side view of the integrated electric compressor. Figure 12 is Figure 11 The sectional view of the integrated electric compressor along line B-B. As Figure 11 and Figure 12 shown, the integrated electric compressor 200 further includes a third control valve 86, a fourth control pin 87, an eighth exhaust passage 88, a ninth exhaust passage 89, a fifth control pin 90, a tenth exhaust passage 91, a muffler 92, a refrigerant passage 94, and a refrigerant valve plate 95. The third control valve 86 is embedded in the housing of the compressor section 60. The fourth control pin 87 is connected to one end of the fifth control pin 90. The fifth control pin 90 is connected to the third control valve 86 at the other end. The eighth exhaust passage 88 is connected to the suction pipe 70. The ninth exhaust passage 89 is connected to the medium pressure passage 77. The fourth control pin 87 is disposed at the intersection of the seventh exhaust passage 80, the eighth exhaust passage 88, and the ninth exhaust passage 89 to selectively block the connection between the three. The muffler 92 is connected to the dryer 82 through the tenth exhaust passage 91. The fifth control pin 90 is disposed at the connection between the dryer 82 and the tenth exhaust passage 91 to selectively block the connection between the two. The refrigerant passage 94 is connected to the sixth compression chamber 96. The refrigerant valve plate 95 is disposed at the connection between the refrigerant passage 94 and the sixth compression chamber 96.

[0054] Figure 13 is Figure 7 The side view of the integrated electric compressor. Figure 14 is Figure 13 The sectional view of the integrated electric compressor along line D-D. As Figure 13 and Figure 14As shown, the integrated electric compressor 200 further includes a fourth control valve 98 and a sixth control pin 99. The fourth control valve 98 is embedded in the housing of the compressor section 60. The sixth control pin 99 is connected to the fourth control valve 98. The sixth control pin 99 is disposed at the connection between the inner cavity of the motor 61 and the sixth compression chamber 96 to selectively block the connection between the inner cavity of the motor 61 and the sixth compression chamber 96.

[0055] The working principle of the integrated electric compressor 200 is described below.

[0056] When the pressure in the air suspension system is sufficient, the first compressor 60a should stop working. The controller 85 controls the motor 61 to stop or continue running according to whether the second compressor 60b needs to continue running. When it is necessary for the motor 61 to continue running, the controller 85 drives the fourth control pin 87 on the third control valve 86 to move to connect the seventh exhaust passage 80, the eighth exhaust passage 88, and the ninth exhaust passage 89. Since the ninth exhaust passage 89 is connected to the medium-pressure passage 77, the gas compressed in the fourth compression chamber 75 returns to the suction pipe 70 via the eighth exhaust passage 88, so that there is no pressure difference between the suction and exhaust of the fourth compression chamber 75. Similarly, there is no pressure difference between the suction and exhaust of the fifth compression chamber 79. The first compressor 60a does not work.

[0057] In the case of excessive moisture in the dryer 82, the controller 85 drives the fifth control pin 90 on the third control valve 86 to move to connect the dryer 82 and the tenth exhaust passage 91. The high-pressure and dry gas in the air suspension is blown back into the dryer 82 via the eighth exhaust passage 83 to remove the moisture in the dryer 82, and then discharged into the atmosphere via the tenth exhaust passage 91 and the silencer 92. After the back blowing is completed, the controller 85 drives the fifth control pin 90 on the third control valve 86 to move to block the connection between the dryer 82 and the tenth exhaust passage 91. At this time, the fourth control pin 87 does not block the seventh exhaust passage 80, the eighth exhaust passage 88, and the ninth exhaust passage 89, so the first compressor 60a does not work.

[0058] After the second compressor 60b is started, the refrigerant enters the inner cavity of the motor 61 through the low-pressure air inlet 59 provided on the housing of the motor 61 to cool the stator 93a. The refrigerant after heat exchange with the stator 93a enters the sixth compression chamber 96 through the refrigerant passage 94 and the refrigerant valve plate 95. The refrigerant is compressed by the sixth piston 64 in the sixth compression chamber 96, and then enters the refrigeration pipeline of the refrigerator system through the exhaust pipeline 97 for refrigeration.

[0059] When the second compressor 60b stops working, if the first compressor 60a still needs to work, the controller 85 drives the sixth control pin 99 on the fourth control valve 98 to move, so as to connect the sixth compression chamber 96 and the inner cavity of the motor 61. In this way, there is no pressure difference between the suction and exhaust of the second compressor 60b, so it does not do work.

[0060] When it is necessary to cool the stator 93a, the refrigerant can also absorb heat from the stator 93a.

[0061] The compressor section 60 can compress the same medium or different media in the first compressor 60a and the second compressor 60b. For example, the suction medium of the first compressor 60a can be changed to refrigerant, so that the first compressor 60a and the second compressor 60b will compress the same medium to different pressures. In this case, the dryer 82 is bypassed.

[0062] The compressor section 60 can also be used as a three-stage compressor. In this case, the integrated electric compressor 200 further includes a pipeline connected between the refrigerant channel 94 and the seventh exhaust channel 80. In this way, the gas or other medium discharged from the first compressor 60a via the seventh exhaust channel 80 can enter the second compressor 60b via the refrigerant channel 94 and be further compressed.

[0063] The integrated electric compressor according to the present application can compress two media simultaneously in two parts. These two parts share a motor and a controller, which helps to reduce costs, reduce volume, solve the compressor noise problem and the EMC problem. The controller can control the two parts of the integrated electric compressor to work simultaneously or separately, which helps to reduce the number of control valves and achieve multi-functional integrated control.

[0064] The integrated electric compressor according to the present application can be used in both a dual-medium system and a single-medium system.

[0065] The integrated electric compressor according to the present application is configured such that the refrigerant flows through the motor to realize the refrigeration of the motor, effectively solving the problem of overheat protection of the motor in a high-temperature environment (such as in summer). In a low-temperature environment (such as in winter), the refrigerant can effectively recover the heat generated by the rotation of the motor, realizing the recovery and utilization of the motor heat.

[0066] The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the embodiments to the variants described. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best illustrate the principles and practical applications, so as to enable others of ordinary skill in the art to understand the embodiments in various embodiments and various modifications suitable for their intended use. Within the framework of the embodiments, the above components and features can be combined between different embodiments.

Claims

1. An integrated electric compressor, comprising: Motor; a first compressor connected to and driven by the motor; It is characterized in that The integrated electric compressor includes a second compressor and a controller; the second compressor is connected to and driven by the motor; The controller is disposed on the motor and is configured to control start and stop of the motor, control a flow direction of a medium in the first compressor, and control a flow direction of a medium in the second compressor.

2. The integrated electric compressor according to claim 1, characterized in that: The first compressor and the second compressor are disposed on opposite sides of the motor; The motor includes an air intake, a stator, a rotor, a first crankshaft and a second crankshaft; The air inlet is disposed on the housing of the motor and is fluidically connected to the inner cavity of the motor; The stator and the rotor are respectively arranged in the inner cavity of the motor; The first crankshaft extends from the rotor into the first compressor; and The second crankshaft extends from the rotor into the second compressor.

3. The integrated electric compressor according to claim 2, characterized in that: The first compressor includes a first control valve; and The first control valve is configured to be operably moved between a plurality of positions to change a flow direction of a medium in the first compressor and to change a working state of the first compressor without changing an operating state of the motor.

4. The integrated electric compressor according to claim 3, characterized in that: The second compressor includes a second control valve; and The second control valve is configured to be operably moved between a plurality of positions to change a flow direction of a medium in the second compressor and to change a working state of the second compressor without changing an operating state of the motor.

5. The integrated electric compressor according to claim 1, characterized in that: The motor comprises a stator, a rotor, a motor shaft and a low-pressure air inlet; The stator and the rotor are respectively arranged in the inner cavity of the motor; The motor shaft is fixed to the rotor or is integrally formed with the rotor; and The low-pressure air inlet is arranged on the housing of the motor and connected to the inner cavity of the motor.

6. The integrated electric compressor according to claim 5, characterized in that: The integrated electric compressor comprises a compressor section, a direction changer, a piston connector, a fourth compression chamber, a fifth compression chamber, a sixth compression chamber, a fourth piston, a fifth piston and a sixth piston; The piston connector is slidably disposed in the compressor section and is connected to the motor via the inverter; The fourth compression chamber, the fifth compression chamber, and the sixth compression chamber are respectively disposed in the fourth compression chamber, the fifth compression chamber, and the sixth compression chamber, and are respectively connected to the piston connector; The fifth compression chamber and the sixth compression chamber are respectively connected to the fourth compression chamber; The fourth piston, the fourth compression chamber, the fifth piston and the fifth compression chamber constitute the first compressor; and The sixth piston and the sixth compression chamber constitute the second compressor.

7. The integrated electric compressor according to claim 6, characterized in that: The integrated electric compressor includes a third control valve; and The third control valve is configured to be operably moved between a plurality of positions to change a flow direction of a medium in the compressor section to change a working state of the first compressor without changing an operating state of the motor.

8. The integrated electric compressor according to claim 7, characterized in that: The integrated electric compressor includes a fourth control valve; and The fourth control valve is configured to be operably moved between a plurality of positions to change a flow direction of a medium in the compressor section to change a working state of the second compressor without changing an operating state of the motor.

9. The integrated electric compressor according to any one of claims 1 to 8, characterized in that: The first compressor and the second compressor compress the same medium.

10. The integrated electric compressor according to any one of claims 1 to 8, characterized in that: The first compressor and the second compressor compress different media.

11. A vehicle, characterized in that: Comprising an integrated electric compressor according to any one of claims 1-10.

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