Electric compressor and vehicle

Abstract

This invention discloses an electric compressor and a vehicle, relating to the field of compressor technology. The electric compressor includes a pump housing, a motor housing, a connecting pipe, and a liquid storage tank. The pump housing contains a pump cavity, within which a pump assembly is installed. The motor housing is connected to the pump housing and contains a motor cavity. The connecting pipe is fixedly connected to the motor housing and contains a suction channel. The liquid storage tank is connected to the motor housing and contains a liquid storage chamber, which communicates with the suction port of the pump assembly via the suction channel. A portion of the wall surface of the liquid storage tank is spaced apart from the corresponding wall surface of the motor housing. In this invention, the liquid storage chamber forms a low-temperature, low-pressure chamber, while the pump cavity and motor cavity are connected to form a high-temperature, high-pressure chamber. The spaced-apart arrangement of the liquid storage tank wall surface with the corresponding wall surface of the motor housing separates the high-temperature, high-pressure chamber from the low-temperature, low-pressure chamber, creating a heat insulation layer between the motor cavity and the liquid storage chamber, reducing heat exchange between the two chambers, and improving the energy efficiency of the electric compressor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to an electric compressor and vehicle. Background Technology

[0002] In related technologies, automotive electric compressors are equipped with a high-temperature high-pressure chamber and a low-temperature low-pressure chamber. The high-temperature high-pressure chamber is located on one side of the pump body assembly, and the low-temperature low-pressure chamber is located on one side of the motor assembly. The high-temperature high-pressure chamber is close to the low-temperature low-pressure chamber, which will dissipate heat to the low-temperature low-pressure chamber, causing the refrigerant temperature in the low-temperature low-pressure chamber to rise. This leads to overheating of the pump body assembly's intake, which in turn reduces the energy efficiency of the electric compressor. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an electric compressor that can set up a high-temperature, high-pressure chamber and a low-temperature, low-pressure chamber separately, thereby reducing heat exchange between the two chambers and improving the energy efficiency of the electric compressor.

[0004] The present invention also proposes a vehicle having the above-mentioned electric compressor.

[0005] An electric compressor according to a first aspect of the present invention includes: a pump housing having a pump cavity formed therein, wherein a pump assembly is installed in the pump cavity; a motor housing connected to the pump housing, wherein a motor cavity communicating with the pump cavity is formed inside the motor housing; a connecting pipe fixedly connected to the motor housing, wherein a suction channel is formed inside the connecting pipe; and a liquid storage housing connected to the motor housing, wherein a liquid storage cavity is formed inside the liquid storage housing, and the liquid storage cavity communicating with the suction port of the pump assembly through the suction channel; wherein a portion of the wall surface of the liquid storage housing is spaced apart from the corresponding wall surface of the motor housing.

[0006] The electric compressor according to embodiments of the present invention has at least the following beneficial effects:

[0007] By incorporating a liquid storage shell with a liquid storage compartment, a low-temperature, low-pressure chamber is formed within the liquid storage compartment. A suction channel within the connecting pipe connects to the suction port of the pump assembly. The pump body chamber of the pump housing is connected to the motor chamber of the motor housing, forming a high-temperature, high-pressure chamber. This optimizes the chamber structure of the electric compressor. Furthermore, the spaced arrangement of a portion of the liquid storage shell's wall surface with the corresponding wall surface of the motor housing separates the high-temperature, high-pressure chamber from the low-temperature, low-pressure chamber, creating a heat insulation layer between the motor chamber and the liquid storage chamber. This reduces heat exchange between the two chambers, ensuring the refrigerant in the liquid storage compartment remains at a lower temperature, preventing overheating of the pump assembly during suction, improving the energy efficiency of the electric compressor, and enhancing its operational stability.

[0008] According to some embodiments of the present invention, a heat-insulating material is filled between a portion of the wall surface of the liquid storage shell and the corresponding wall surface of the motor shell.

[0009] According to some embodiments of the present invention, along the axial direction of the motor housing, the thickness of the first gap between a portion of the wall surface of the liquid storage shell and the corresponding wall surface of the motor housing is greater than or equal to 5 mm.

[0010] According to some embodiments of the present invention, a closed first cavity is formed between the inner wall of the liquid storage cavity and the inner wall of the motor cavity, and the first cavity is in a vacuum state or filled with heat insulation material.

[0011] According to some embodiments of the present invention, a portion of the wall surface of the connecting pipe is spaced apart from the corresponding wall surface of the motor housing.

[0012] According to some embodiments of the present invention, a heat-insulating material is filled between a portion of the wall surface of the connecting pipe and the corresponding wall surface of the motor housing.

[0013] According to some embodiments of the present invention, the thickness of the second gap between a portion of the wall surface of the connecting pipe and the corresponding wall surface of the motor housing along the circumferential direction of the motor housing is greater than or equal to 3 mm.

[0014] According to some embodiments of the present invention, a closed second cavity is formed between the inner wall of the air intake channel and the inner wall of the motor cavity, and the second cavity is in a vacuum state or filled with heat insulation material.

[0015] According to some embodiments of the present invention, the liquid storage shell includes a liquid storage housing and a cover plate, the cover plate being sealed at the end of the liquid storage housing away from the motor housing, and the connecting pipe, the motor housing and the liquid storage housing being integrally formed.

[0016] According to some embodiments of the present invention, the electric compressor further includes a support foot connected between the liquid storage tank and the motor housing.

[0017] According to some embodiments of the present invention, the support feet are provided in multiples, and the multiple support feet are arranged at intervals along the circumference of the motor housing; among the two support feet, one has at least one wire through hole inside, and the other is fixedly connected to the connecting pipe.

[0018] A vehicle according to a second aspect of the present invention includes the electric compressor described in the above embodiments.

[0019] The vehicle according to embodiments of the present invention has at least the following beneficial effects:

[0020] The electric compressor using the first aspect embodiment has a liquid storage shell with a liquid storage chamber, which forms a low-temperature, low-pressure chamber. The liquid storage chamber is connected to the suction port of the pump assembly via a suction channel in a connecting pipe. The pump chamber of the pump housing is connected to the motor chamber of the motor housing to form a high-temperature, high-pressure chamber, thus optimizing the chamber structure of the electric compressor. A portion of the wall surface of the liquid storage shell is spaced apart from the corresponding wall surface of the motor housing, separating the high-temperature, high-pressure chamber from the low-temperature, low-pressure chamber. This creates a heat insulation layer between the motor chamber and the liquid storage chamber, reducing heat exchange between the two chambers, ensuring the refrigerant in the liquid storage chamber is at a lower temperature, preventing overheating of the pump assembly during suction, improving the energy efficiency of the electric compressor, and enhancing its operational stability.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of an electric compressor according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 The exploded view of the electric compressor shown;

[0025] Figure 3 for Figure 1 A cross-sectional schematic diagram of the electric compressor shown;

[0026] Figure 4 for Figure 3 Exploded view of point A in the middle;

[0027] Figure 5 for Figure 1 Schematic diagram of the structure of the liquid storage tank, connecting pipe and motor housing;

[0028] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the liquid storage tank, connecting pipe, and motor housing.

[0029] Figure 7 for Figure 5 A partial sectional view of the liquid storage tank, connecting pipe, and motor housing shown;

[0030] Figure 8 This is a schematic diagram of the structure of a vehicle according to an embodiment of the present invention.

[0031] Icon labels:

[0032] 1000 electric compressor;

[0033] Main housing 100; motor housing 110; motor cavity 111; pump body housing 120; pump body cavity 121; air outlet 122; support frame 130;

[0034] Motor assembly 200; stator 210; rotor 220;

[0035] Pump body assembly 300; crankshaft 310; intake port 320;

[0036] Liquid storage shell 400; liquid storage cavity 410; air inlet 420; liquid storage container shell 430; liquid storage tank 431; first cover plate 440; heat sink 441; base plate 442; surrounding plate 443; mounting groove 444; mounting cavity 445;

[0037] Connecting tube 500; Intake channel 510;

[0038] Second cover plate 600;

[0039] Control board 700; High-heat-generating component 710;

[0040] Heat sink 800;

[0041] Support feet 900; cable guide holes 910. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0044] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0045] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0046] Reference Figure 1 and Figure 8 As shown, the electric compressor 1000 of this invention is applied to a vehicle's air conditioning system. The electric compressor 1000 is the core component of the air conditioning system. After compressing the refrigerant, the electric compressor 1000 discharges it. The refrigerant then passes through the condenser, throttling device, and evaporator in sequence, and finally re-enters the electric compressor 1000, thus achieving refrigerant circulation. The refrigerant regulates the air quality inside the vehicle through heat absorption during evaporation and heat release during condensation.

[0047] Reference Figure 1 , Figure 2 and Figure 3 As shown, the electric compressor 1000 of this embodiment includes a main housing 100, a motor assembly 200, and a pump assembly 300. The main housing 100 includes a motor housing 110, a pump housing 120, and a support frame 130. The motor housing 110 is fixedly connected to the pump housing 120 via the support frame 130, which is sandwiched between the motor housing 110 and the pump housing 120. For example, the support frame 130, the motor housing 110, and the pump housing 120 can be fixedly connected by bolts. A pump cavity 121 is formed inside the pump housing 120, and the pump assembly 300 is fixedly installed on the support frame 130 and located inside the pump cavity 121. A motor cavity 111 is formed inside the motor housing 110, and the motor assembly 200 is installed inside the motor cavity 111. The motor assembly 200 includes a stator 210 and a rotor 220, and the stator 210 can be fixedly connected to the inner wall of the motor cavity 111. The pump body assembly 300 includes a crankshaft 310 that extends into the motor cavity 111 and is rotatably fixedly connected thereto. Under the drive of the motor assembly 200, the crankshaft 310 rotates and realizes the processes of air intake, compression and exhaust of the pump body assembly 300.

[0048] Reference Figure 1 and Figure 3As shown, the electric compressor 1000 of this embodiment further includes a liquid storage tank 400 and a connecting pipe 500. The liquid storage tank 400 is fixedly connected to the motor housing 110, and a liquid storage cavity 410 is formed inside the liquid storage tank 400. The connecting pipe 500 is fixedly connected to the motor housing 110, and a suction channel 510 is formed inside the connecting pipe 500. One end of the suction channel 510 is connected to the liquid storage cavity 410, and the other end of the suction channel 510 is connected to the suction port 320 of the pump body assembly 300. Low-temperature and low-pressure refrigerant enters the liquid storage cavity 410 from the inlet 420 of the liquid storage tank 400, and then enters the suction port 320 of the pump body assembly 300 through the suction channel 510. After the pump body assembly 300 compresses the low-temperature and low-pressure refrigerant, the high-temperature and high-pressure refrigerant is discharged to the pump body cavity 121 through the exhaust port of the pump body assembly 300, and finally discharged through the outlet 122 of the pump body housing 120. Therefore, the liquid storage chamber 410 is formed as a low temperature and low pressure chamber; since the pump body chamber 121 and the motor chamber 111 are connected, the pump body chamber 121 and the motor chamber 111 in the main housing 100 are formed as a high temperature and high pressure chamber, thereby optimizing the chamber structure of the electric compressor 1000.

[0049] Reference Figure 3 , Figure 4 and Figure 5 As shown, it can be understood that the motor cavity 111 is a high-temperature, high-pressure cavity with a high temperature, while the liquid storage cavity 410 is a low-temperature, low-pressure cavity with a low temperature. Therefore, heat exchange between the motor cavity 111 and the liquid storage cavity 410 can cause the pump assembly 300 to overheat during suction, thereby reducing the energy efficiency of the electric compressor 1000. To solve the above problem, in this embodiment of the electric compressor 1000, a portion of the wall surface of the liquid storage housing 430 is spaced apart from the corresponding wall surface of the motor housing 110. That is, by forming a heat insulation layer between the motor cavity 111 and the liquid storage cavity 410, heat conduction between the motor cavity 111 and the liquid storage cavity 410 is effectively limited, heat exchange between the two chambers is reduced, the refrigerant in the liquid storage cavity 410 is kept at a lower temperature, the pump assembly 300 is prevented from overheating during suction, the energy efficiency of the electric compressor 1000 is improved, and the operational stability of the electric compressor 1000 is enhanced.

[0050] Reference Figure 2 , Figure 4 and Figure 5As shown, the liquid storage shell 400 includes a liquid storage shell 430 and a first cover plate 440. The liquid storage shell 430 forms a liquid storage tank 431, and the first cover plate 440 seals the opening of the liquid storage tank 431. The liquid storage shell 430, the connecting pipe 500, and the motor shell 110 can be integrally cast or fixedly connected by welding or other methods. A heat sink 441 is provided on the side of the first cover plate 440 facing the liquid storage cavity 410. The heat sink 441 can be integrally manufactured with the first cover plate 440 or fixedly connected to the first cover plate 440 by welding or other methods. The heat sink 441 is made of a material with good thermal conductivity. The first cover plate 440 includes a base plate 442 and a surrounding plate 443 surrounding the outer periphery of the base plate 442. The base plate 442 is used to cover the opening of the liquid storage tank 431. The surrounding plate 443 is located on the side of the base plate 442 away from the liquid storage cavity 410. The surrounding plate 443 and the base plate 442 form an installation groove 444.

[0051] Reference Figure 2 , Figure 3 and Figure 4 As shown, the electric compressor 1000 of this embodiment further includes a second cover plate 600 and a control plate 700. The second cover plate 600 covers the opening of the mounting groove 444, forming a mounting cavity 445 between the second cover plate 600 and the first cover plate 440. The control plate 700 is installed in the mounting cavity 445. The controller of the electric compressor 1000 is integrated into the control plate 700. Integrating the controller into the overall structure of the electric compressor 1000 makes the structure more compact and the assembly simpler and more convenient. The heat generated by the control plate 700 can be conducted to the heat sink 441. When the low-temperature and low-pressure refrigerant passes through the liquid storage cavity 410, it can promptly and fully remove the heat from the heat sink 441, achieving effective cooling of the control plate 700, ensuring the reliability of the control plate 700, and improving the operational stability of the electric compressor 1000.

[0052] Reference Figure 4 As shown, it can be understood that, in order to achieve more efficient cooling of the control board 700 and to conduct the heat of the control board 700 to the heat sink 441 more quickly, the electric compressor 1000 of the present invention also includes a heat dissipation substrate 800. The heat dissipation substrate 800 is installed in the mounting cavity 445 and connects the control board 700 and the heat sink 441. The heat dissipation substrate 800 can be made of a metal material or a non-metal material with good heat dissipation properties, such as aluminum.

[0053] Reference Figure 4As shown, it can be understood that in order to accelerate the heat exchange efficiency between the heat sink 441 and the refrigerant in the liquid storage chamber 410, multiple heat sinks 441 are provided, and the multiple heat sinks 441 are arranged at intervals, thereby increasing the heat dissipation area. The multiple heat sinks 441 extend along the airflow direction of the refrigerant in the liquid storage chamber 410, which facilitates the refrigerant to quickly carry away the heat from the heat sinks 441 during the flow process, while the heat sinks 441 do not obstruct the flow of the refrigerant.

[0054] Reference Figure 4 As shown, it can be understood that on the end face of the first cover plate 440, the area occupied by the heat sink 441 is greater than or equal to the area occupied by the heat sink substrate 800, thereby allowing the heat from the heat sink substrate 800 to be quickly diffused to the heat sink 441 through direct contact. For example, on the plane where the base plate 442 is located, the projection of the heat sink substrate 800 is located within the outer contour line of the projection of the heat sink 441.

[0055] Reference Figure 4 As shown, it can be understood that the control board 700 includes a high-heat-generating component 710, which is the main heat-generating element of the control board 700. The high-heat-generating component 710 abuts against the heat dissipation substrate 800, and the area of ​​the heat dissipation substrate 800 is greater than or equal to the end face area of ​​the high-heat-generating component 710, so that the heat of the high-heat-generating component 710 can be quickly diffused to the heat dissipation substrate 800 through direct contact, thereby achieving rapid cooling of the control board 700. For example, on the plane where the base plate 442 is located, the projection of the high-heat-generating component 710 is located within the outer contour line of the projection of the heat dissipation substrate 800.

[0056] Reference Figure 6 As shown, in another embodiment, to reduce heat exchange between the liquid storage chamber 410 and the motor chamber 111, a heat-insulating material is filled between a portion of the wall surface of the liquid storage tank 430 and the corresponding wall surface of the motor chamber 110. The heat-insulating material further restricts heat conduction between the motor chamber 111 and the liquid storage chamber 410, ensuring that the refrigerant in the liquid storage chamber 410 is at a lower temperature, thus improving the energy efficiency of the electric compressor 1000. The heat-insulating material can be made of a material with low thermal conductivity, such as plastic; it can also be made of porous materials, heat-reflective materials, or vacuum materials.

[0057] Reference Figure 6 As shown, it can be understood that, along the axial direction of the motor housing 110, the thickness L1 of the first gap between a portion of the wall surface of the reservoir housing 430 and the corresponding wall surface of the motor housing 110 is greater than or equal to 5 mm. Meeting the above parameter range ensures good thermal insulation between the motor cavity 111 and the reservoir cavity 410, effectively reducing heat exchange between the high-temperature, high-pressure motor cavity 111 and the low-temperature, low-pressure reservoir cavity 410. Furthermore, the motor housing 110 and the reservoir housing 400 are easier to process, making demolding less difficult.

[0058] Understandably, as another embodiment, the gap between the reservoir housing 430 and the motor housing 110 can be constructed as a closed first cavity, that is, a first cavity is formed between the inner wall of the reservoir cavity 410 and the inner wall of the motor cavity 111. The first cavity can be in a vacuum state, thereby limiting heat conduction between the motor cavity 111 and the reservoir cavity 410, achieving a better heat insulation effect. The first cavity can also be filled with heat insulation material, which can be made of a material with poor thermal conductivity. The heat insulation material can further limit heat conduction between the motor cavity 111 and the reservoir cavity 410, achieving a better heat insulation effect.

[0059] It is understood that the thickness of the first cavity along the axial direction of the motor housing 110 is greater than or equal to 5 mm. Meeting the above parameter range provides better thermal insulation between the motor cavity 111 and the liquid storage cavity 410, effectively reducing heat exchange between the high-temperature, high-pressure motor cavity 111 and the low-temperature, low-pressure liquid storage cavity 410, and also facilitating processing.

[0060] Reference Figure 5 and Figure 6 As shown, it can be understood that a portion of the wall surface of the connecting pipe 500 is spaced apart from the corresponding wall surface of the motor housing 110, i.e., an air insulation layer is formed between the motor cavity 111 and the suction channel 510. Since the motor cavity 111 is a high-temperature and high-pressure cavity, and the suction channel 510 is a low-temperature and low-pressure cavity, the air insulation layer can effectively limit the heat conduction between the motor cavity 111 and the suction channel 510, ensuring that the refrigerant in the suction channel 510 is at a lower temperature, thereby improving the energy efficiency of the electric compressor 1000.

[0061] Reference Figure 6 As shown, it can be understood that a portion of the wall surface of the connecting pipe 500 is filled with thermal insulation material between it and the corresponding wall surface of the motor housing 110. This thermal insulation material further restricts heat conduction between the motor cavity 111 and the suction channel 510, ensuring that the refrigerant entering the suction port 320 of the pump body assembly 300 is at a lower temperature, thus improving the energy efficiency of the electric compressor 1000. The thermal insulation material can be made of a material with low thermal conductivity, such as plastic; it can also be made of porous materials, heat-reflective materials, or vacuum materials.

[0062] Reference Figure 6 As shown, it can be understood that, along the radial direction of the motor housing 110, the thickness L2 of the second gap between a portion of the wall surface of the connecting pipe 500 and the corresponding wall surface of the motor housing 110 is greater than or equal to 3mm. Meeting the above parameter range ensures good heat insulation between the motor cavity 111 and the suction channel 510, effectively reducing heat exchange between the high-temperature, high-pressure motor cavity 111 and the low-temperature, low-pressure suction channel 510. Furthermore, the motor housing 110 and the connecting pipe 500 are easier to process, making demolding less difficult.

[0063] Understandably, as another embodiment, the motor housing 110 and the connecting pipe 500 can be integrally molded, and a closed second cavity can be constructed between the motor housing 110 and the connecting pipe 500, that is, a second cavity can be formed between the inner wall of the intake channel 510 and the inner wall of the motor cavity 111. The second cavity can be in a vacuum state, thereby limiting the heat conduction between the motor cavity 111 and the intake channel 510, achieving a better heat insulation effect. The second cavity can also be filled with heat insulation material, which can be made of a material with poor thermal conductivity. The heat insulation material can further limit the heat conduction between the motor cavity 111 and the intake channel 510, achieving a better heat insulation effect.

[0064] It is understood that the thickness of the second cavity along the radial direction of the motor housing 110 is greater than or equal to 3 mm. Meeting the above parameter range provides better heat insulation between the motor housing 111 and the intake channel 510, effectively reducing heat exchange between the high-temperature, high-pressure motor housing 111 and the low-temperature, low-pressure intake channel 510, and also facilitating processing.

[0065] Reference Figure 5 As shown, it can be understood that the connecting pipe 500, the motor housing 110 and the liquid reservoir housing 430 are integrally molded parts, which makes the structure more stable, the processing cost lower and the assembly faster.

[0066] Reference Figure 6 and Figure 7 As shown, to improve the stability of the connection between the reservoir housing 430 and the motor housing 110, the electric compressor 1000 also includes a support foot 900. The support foot 900 is connected between the reservoir housing 430 and the motor housing 110, increasing the connection strength between them. It is understood that the support foot 900 can be welded to the reservoir housing 430 and the motor housing 110, or it can be integrally cast with the reservoir housing 430 and the motor housing 110.

[0067] Reference Figure 7 As shown, it can be understood that there are multiple support feet 900, such as two, three, or four. The multiple support feet 900 are spaced apart circumferentially along the motor housing 110, which makes the force between them more even and the connection more stable.

[0068] Reference Figure 7As shown, it can be understood that the support foot 900 of this embodiment of the invention has at least two. One of the support feet 900 has a wire-passing hole 910, which can be one, two, or more, for the cable of the power supply assembly 200 to pass through. The wire-passing hole 910 in the support foot 900 can effectively utilize space and is beneficial to the protection of the cable. The other support foot 900 is fixedly connected to the connecting pipe 500, for fixing the connecting pipe 500 to the motor housing 110 and the liquid reservoir housing 430. The support foot 900 has a partial structure with an air intake channel 510, which can achieve more rational use of space.

[0069] Reference Figure 8 As shown, a vehicle according to one embodiment of the present invention includes the electric compressor 1000 of the above embodiments. It is understood that the vehicle of this embodiment can be a new energy vehicle such as an electric vehicle or a hybrid vehicle, or a fuel vehicle such as a gasoline vehicle, and is not specifically limited thereto.

[0070] The electric compressor 1000 can be applied to a vehicle's air conditioning system to provide cooling or heating for the vehicle's interior environment. In this embodiment, the electric compressor 1000 can be a rotary compressor.

[0071] The vehicle of this embodiment of the invention uses the electric compressor 1000 of the first aspect embodiment. The electric compressor 1000 is provided with a liquid storage shell 400 having a liquid storage chamber 410, so that the liquid storage chamber 410 forms a low temperature and low pressure chamber. It is connected to the air intake 320 of the pump body assembly 300 through the air intake channel 510 in the connecting pipe 500. The pump body cavity 121 of the pump body shell 120 is connected to the motor cavity 111 of the motor shell 110 to form a high temperature and high pressure chamber, thus optimizing the chamber structure of the electric compressor 1000. Part of the wall surface of the liquid storage shell 400 is spaced apart from the corresponding wall surface of the motor shell 110, which can separate the high temperature and high pressure chamber from the low temperature and low pressure chamber, so that a heat insulation layer is formed between the motor cavity 111 and the liquid storage chamber 410, reducing the heat exchange between the two chambers, ensuring that the refrigerant in the liquid storage chamber 410 is at a lower temperature, avoiding the phenomenon of overheating of the pump body assembly 300 during air intake, improving the energy efficiency of the electric compressor 1000, and improving the operational stability of the electric compressor 1000.

[0072] Since the vehicle adopts all the technical solutions of the electric compressor 1000 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An electric compressor, characterized in that, include: The pump housing has a pump cavity inside, and the pump assembly is installed inside the pump cavity; A motor housing is connected to the pump body housing, and a motor cavity communicating with the pump body cavity is formed inside the motor housing; A connecting pipe is fixedly connected to the motor housing, and an air intake channel is formed inside the connecting pipe; A liquid storage shell is connected to the motor housing. A liquid storage cavity is formed inside the liquid storage shell. The liquid storage cavity is connected to the air intake of the pump body assembly through the air intake channel. Part of the wall surface of the liquid storage shell is spaced apart from the corresponding wall surface of the motor housing. The liquid storage shell includes a liquid storage housing and a first cover plate. A portion of the wall surface of the liquid storage housing is spaced apart from the corresponding wall surface of the motor housing. The first cover plate has a mounting groove, and a second cover plate is used to seal the opening of the mounting groove. The control board is installed in the mounting cavity formed between the first cover plate and the second cover plate. A heat sink is provided on the side of the first cover plate facing the liquid storage cavity. The heat of the control board can be conducted to the heat sink and carried away by the refrigerant passing through the liquid storage cavity.

2. The electric compressor according to claim 1, characterized in that: A heat-insulating material is filled between a portion of the wall of the liquid storage tank and the corresponding wall of the motor housing.

3. The electric compressor according to claim 1 or 2, characterized in that: Along the axial direction of the motor housing, the thickness of the first gap between a portion of the wall surface of the liquid storage tank and the corresponding wall surface of the motor housing is greater than or equal to 5 mm.

4. The electric compressor according to claim 1, characterized in that: A closed first cavity is formed between the inner wall of the liquid storage cavity and the inner wall of the motor cavity. The first cavity is either in a vacuum state or filled with heat insulation material.

5. The electric compressor according to claim 1, characterized in that: A portion of the wall surface of the connecting pipe is spaced apart from the corresponding wall surface of the motor housing.

6. The electric compressor according to claim 5, characterized in that: The space between a portion of the wall of the connecting pipe and the corresponding wall of the motor housing is filled with heat-insulating material.

7. The electric compressor according to claim 5 or 6, characterized in that: Along the circumference of the motor housing, the thickness of the second gap between a portion of the wall surface of the connecting pipe and the corresponding wall surface of the motor housing is greater than or equal to 3 mm.

8. The electric compressor according to claim 5, characterized in that: A closed second cavity is formed between the inner wall of the air intake channel and the inner wall of the motor cavity. The second cavity is either in a vacuum state or filled with heat insulation material.

9. The electric compressor according to claim 1, characterized in that: The liquid storage shell includes a liquid storage housing and a cover plate. The cover plate covers the end of the liquid storage housing away from the motor housing. The connecting pipe, the motor housing, and the liquid storage housing are integrally formed.

10. The electric compressor according to claim 1, characterized in that: The electric compressor also includes a support foot, which is connected between the liquid storage tank and the motor housing.

11. The electric compressor according to claim 10, characterized in that: The support feet are provided in multiple ways, and the multiple support feet are arranged at intervals along the circumference of the motor housing; among the two support feet, one has at least one wire hole inside, and the other is fixedly connected to the connecting pipe.

12. A vehicle, characterized in that: Includes the electric compressor as described in any one of claims 1 to 11.

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