CN219412911U - Electric compressor and vehicle - Google Patents

Abstract

The utility model discloses an electric compressor and a vehicle, and relates to the technical field of compressors. The pump body housing is internally provided with a pump body cavity, and a pump body assembly is arranged in the pump body cavity; the motor shell is connected with the pump body shell, and a motor cavity is arranged in the motor shell; the connecting pipe is fixedly connected with the motor shell, and an air suction channel is arranged in the connecting pipe; the liquid storage shell is connected with the motor shell, a liquid storage cavity is formed in the liquid storage shell, and the liquid storage cavity is communicated with the air suction port of the pump body component through an air suction channel; part of the wall surface of the liquid storage shell is arranged at intervals with the corresponding wall surface of the motor shell. The liquid storage cavity of the utility model forms a low-temperature low-pressure cavity, and the pump cavity is communicated with the motor cavity to form a high-temperature high-pressure cavity; the part of the wall surface of the liquid storage shell is arranged at intervals with the corresponding wall surface of the motor shell, so that the high-temperature high-pressure cavity and the low-temperature low-pressure cavity can be spaced, a heat insulation layer is formed between the motor cavity and the liquid storage cavity, heat exchange between the two cavities is reduced, and the energy efficiency of the electric compressor is improved.

Description

Electric compressor and vehicle

Technical Field

The utility model relates to the technical field of compressors, in particular to an electric compressor and a vehicle.

Background

In the related art, a high-temperature high-pressure cavity and a low-temperature low-pressure cavity are arranged in the electric compressor for the automobile, the high-temperature high-pressure cavity is located on one side of the pump body component, the low-temperature low-pressure cavity is located on one side of the motor component, and the high-temperature high-pressure cavity is close to the low-temperature low-pressure cavity, so that heat can be dissipated to the low-temperature low-pressure cavity, the temperature of a refrigerant in the low-temperature low-pressure cavity is increased, the suction of the pump body component is overheated, and the energy efficiency of the electric compressor is reduced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the electric compressor, which can enable the high-temperature high-pressure cavity and the low-temperature low-pressure cavity to be arranged at intervals, reduce heat exchange between the two cavities and improve the energy efficiency of the electric compressor.

The utility model also provides a vehicle with the electric compressor.

An electric compressor according to an embodiment of the first aspect of the present utility model includes: the pump comprises a pump body shell, a pump body assembly and a pump body assembly, wherein a pump body cavity is formed in the pump body shell; the motor shell is connected with the pump body shell, and a motor cavity communicated with the pump body cavity is formed in the motor shell; the connecting pipe is fixedly connected with the motor shell, and an air suction channel is formed in the connecting pipe; the liquid storage shell is connected with the motor shell, a liquid storage cavity is formed in the liquid storage shell, and the liquid storage cavity is communicated with the air suction port of the pump body assembly through the air suction channel; and part of the wall surface of the liquid storage shell is arranged at intervals with the corresponding wall surface of the motor shell.

The electric compressor provided by the embodiment of the utility model has at least the following beneficial effects:

the liquid storage cavity forms a low-temperature low-pressure cavity by arranging the liquid storage shell with the liquid storage cavity, and is communicated with the air suction port of the pump body assembly by arranging the air suction channel in the connecting pipe, and the pump cavity of the pump body shell is communicated with the motor cavity of the motor shell to form a high-temperature high-pressure cavity, so that the cavity structure of the electric compressor is optimized; the wall surface of the liquid storage shell is arranged at intervals with the corresponding wall surface of the motor shell, so that the high-temperature high-pressure cavity and the low-temperature low-pressure cavity are spaced apart, a heat insulation layer is formed between the motor cavity and the liquid storage cavity, heat exchange between the two cavities is reduced, the refrigerant in the liquid storage cavity is ensured to be at a lower temperature, the suction overheat phenomenon of the pump body component is avoided, the energy efficiency of the electric compressor is improved, and the running stability of the electric compressor is improved.

According to some embodiments of the utility model, a heat insulating material is filled between a part of the wall surface of the liquid storage shell and the corresponding wall surface of the motor shell.

According to some embodiments of the utility model, a thickness of the first gap between a portion of the wall surface of the liquid storage case and a corresponding wall surface of the motor case is 5mm or more along an axial direction of the motor case.

According to some embodiments of the utility model, a closed first compartment is formed between the inner wall of the liquid storage cavity and the inner wall of the motor cavity, and the first compartment is in a vacuum state or is filled with heat insulation materials.

According to some embodiments of the utility model, a portion of the wall surface of the connecting tube is spaced from a corresponding wall surface of the motor casing.

According to some embodiments of the utility model, a thermal insulation material is filled between a part of the wall surface of the connecting pipe and a corresponding wall surface of the motor casing.

According to some embodiments of the utility model, a thickness of the second gap between a part of the wall surface of the connection pipe and the corresponding wall surface of the motor case is 3mm or more in a circumferential direction of the motor case.

According to some embodiments of the utility model, a closed second compartment is formed between the inner wall of the suction channel and the inner wall of the motor cavity, and the second compartment is in a vacuum state or is filled with heat insulation materials.

According to some embodiments of the utility model, the liquid storage shell comprises a liquid storage shell and a cover plate, the cover plate is sealed at one end of the liquid storage shell far away from the motor shell, and the connecting pipe, the motor shell and the liquid storage shell are integrated into a whole.

According to some embodiments of the utility model, the motor-driven compressor further comprises a support leg connected between the reservoir housing and the motor housing.

According to some embodiments of the utility model, the plurality of support legs are arranged at intervals along the circumferential direction of the motor casing; at least one wire through hole is formed in one of the two supporting feet, and the other supporting foot is fixedly connected with the connecting pipe.

A vehicle according to an embodiment of the second aspect of the utility model includes the electric compressor described in the above embodiment.

The vehicle provided by the embodiment of the utility model has at least the following beneficial effects:

by adopting the electric compressor of the embodiment of the first aspect, the electric compressor enables the liquid storage cavity to form a low-temperature low-pressure cavity by arranging the liquid storage shell with the liquid storage cavity, and is communicated with the air suction port of the pump body assembly by arranging the air suction channel in the connecting pipe, and the pump cavity of the pump body shell is communicated with the motor cavity of the motor shell to form a high-temperature high-pressure cavity, so that the cavity structure of the electric compressor is optimized; the wall surface of the liquid storage shell is arranged at intervals with the corresponding wall surface of the motor shell, so that the high-temperature high-pressure cavity and the low-temperature low-pressure cavity are spaced apart, a heat insulation layer is formed between the motor cavity and the liquid storage cavity, heat exchange between the two cavities is reduced, the refrigerant in the liquid storage cavity is ensured to be at a lower temperature, the suction overheat phenomenon of the pump body component is avoided, the energy efficiency of the electric compressor is improved, and the running stability of the electric compressor is improved.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic view showing a structure of an electric compressor according to an embodiment of the present utility model;

fig. 2 is an exploded view of the motor-driven compressor shown in fig. 1;

FIG. 3 is a schematic cross-sectional view of the motor-driven compressor shown in FIG. 1;

FIG. 4 is an exploded view of FIG. 3 at A;

FIG. 5 is a schematic diagram of the structure of the liquid storage case, the connecting tube and the motor case in FIG. 1;

FIG. 6 is a schematic cross-sectional view of the reservoir housing, connecting tube, and motor housing shown in FIG. 5;

FIG. 7 is a partial cross-sectional view of the reservoir housing, connecting tube and motor housing shown in FIG. 5;

fig. 8 is a schematic structural view of a vehicle according to an embodiment of the present utility model.

Reference numerals:

an electric compressor 1000;

a main housing 100; a motor housing 110; a motor cavity 111; a pump body housing 120; a pump chamber 121; an air outlet 122; a support 130;

a motor assembly 200; a stator 210; a rotor 220;

a pump body assembly 300; a crankshaft 310; the suction port 320;

a liquid storage case 400; a reservoir 410; an air inlet 420; a reservoir housing 430; a liquid storage tank 431; a first cover plate 440; a heat sink 441; a bottom plate 442; the shroud 443; a mounting groove 444; a mounting cavity 445;

a connection pipe 500; a suction channel 510;

a second cover plate 600;

a control panel 700; a high heat generating part 710;

a heat dissipation substrate 800;

support feet 900; and a via 910.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 8, an electric compressor 1000 according to an embodiment of the present utility model is applied to an air conditioning system of a vehicle. The electric compressor 1000 is a core component of an air conditioning system, the electric compressor 1000 compresses a refrigerant and discharges the refrigerant, the refrigerant sequentially passes through a condenser, a throttling device and an evaporator, and finally the refrigerant reenters the electric compressor 1000 to realize refrigerant circulation. The refrigerant realizes the air conditioning of the environment in the vehicle through evaporation heat absorption and condensation heat release.

Referring to fig. 1, 2 and 3, an electric compressor 1000 according to an embodiment of the present utility model includes a main housing 100, a motor assembly 200 and a pump body assembly 300. The main housing 100 includes a motor housing 110, a pump housing 120, and a support bracket 130. The motor casing 110 is fixedly connected with the pump casing 120 through the support 130, the support 130 is clamped between the motor casing 110 and the pump casing 120, for example, the support 130, the motor casing 110 and the pump casing 120 can be fixedly connected through bolts. The pump body housing 120 has a pump body cavity 121 formed therein, and the pump body assembly 300 is fixedly mounted to the supporting frame 130 and is positioned in the pump body cavity 121. A motor chamber 111 is formed in the motor housing 110, and the motor assembly 200 is installed in the motor chamber 111. The motor assembly 200 includes a stator 210 and a rotor 220, the stator 210 being fixedly coupled to an inner wall of the motor cavity 111. The pump body assembly 300 includes a crankshaft 310, the crankshaft 310 extending to the motor cavity 111 and being fixedly connected with rotation; under the driving action of the motor assembly 200, the crankshaft 310 rotates and performs the suction, compression and discharge processes of the pump body assembly 300.

Referring to fig. 1 and 3, the motor-driven compressor 1000 according to the embodiment of the present utility model further includes a liquid storage case 400 and a connection pipe 500. The liquid storage case 400 is fixedly connected to the motor case 110, and a liquid storage chamber 410 is formed in the liquid storage case 400. The connection pipe 500 is fixedly connected to the motor case 110, and an air suction passage 510 is formed in the connection pipe 500. One end of the suction channel 510 communicates with the liquid storage chamber 410, and the other end of the suction channel 510 communicates with the suction port 320 of the pump body assembly 300. The low-temperature and low-pressure refrigerant enters the liquid storage cavity 410 from the air inlet 420 of the liquid storage shell 400, then enters the air suction port 320 of the pump body assembly 300 through the air suction channel 510, the pump body assembly 300 compresses the low-temperature and low-pressure refrigerant, then discharges the high-temperature and high-pressure refrigerant to the pump body cavity 121 through the air outlet 122 of the pump body assembly 300, and finally discharges the refrigerant through the air outlet 122 of the pump body shell 120. Thus, 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 communicated, the pump body chamber 121 and the motor chamber 111 in the main housing 100 are formed as high temperature and high pressure chambers, thereby optimizing the chamber structure of the motor-driven compressor 1000.

Referring to fig. 3, 4 and 5, it can be understood that the motor chamber 111 is a high-temperature and high-pressure chamber, and has a high temperature; the liquid storage chamber 410 is a low temperature and low pressure chamber, and has a low temperature. The heat exchange between the motor chamber 111 and the reservoir chamber 410 may cause the pump body assembly 300 to suck air to overheat, thereby reducing the energy efficiency of the motor-driven compressor 1000. In order to solve the above-mentioned problems, in the electric compressor 1000 of the embodiment of the present utility model, a part of the wall surface of the reservoir housing 430 is spaced from the corresponding wall surface of the motor housing 110, that is, a heat insulation layer is formed between the motor cavity 111 and the reservoir cavity 410, so as to effectively limit heat conduction between the motor cavity 111 and the reservoir cavity 410, reduce heat exchange between the two cavities, ensure that the refrigerant in the reservoir cavity 410 is at a lower temperature, avoid the suction overheat phenomenon of the pump body assembly 300, improve the energy efficiency of the electric compressor 1000, and improve the operation stability of the electric compressor 1000.

Referring to fig. 2, 4 and 5, it can be appreciated that the liquid storage case 400 includes a liquid storage case 430 and a first cover plate 440, the liquid storage case 430 is formed with a liquid storage groove 431, and the first cover plate 440 is capped at an opening of the liquid storage groove 431. The reservoir housing 430, the connection tube 500, and the motor housing 110 may be formed by an integral casting process, or may be fixedly connected by welding or the like. The side of the first cover plate 440 facing the liquid storage cavity 410 is provided with a heat dissipation plate 441, the heat dissipation plate 441 and the first cover plate 440 can be integrally manufactured and formed, and can also be fixedly connected to the first cover plate 440 by adopting a welding mode and the like, and the heat dissipation plate 441 is made of a material with good heat conduction effect. The first cover plate 440 includes a bottom plate 442 and a shroud 443 surrounding the bottom plate 442, and the bottom plate 442 is used for covering the opening of the liquid storage tank 431; the shroud 443 is positioned on a side of the bottom plate 442 remote from the reservoir 410, and the shroud 443 and the bottom plate 442 form a mounting slot 444.

Referring to fig. 2, 3 and 4, it can be appreciated that the motor-driven compressor 1000 according to the embodiment of the present utility model further includes a second cover plate 600 and a control plate 700, the second cover plate 600 is sealed at the opening of the mounting groove 444, a mounting cavity 445 is formed between the second cover plate 600 and the first cover plate 440, and the control plate 700 is mounted in the mounting cavity 445. The controller of the electric compressor 1000 is integrated in the control board 700, and the controller is integrated in the whole structure of the electric compressor 1000, so that the structure is more compact, and the assembly is simpler and more convenient. The heat generated by the control panel 700 can be conducted to the cooling fins 441, and the low-temperature and low-pressure refrigerant can timely and fully take away the heat of the cooling fins 441 when passing through the liquid storage cavity 410, so that the effective cooling of the control panel 700 is realized, the reliability of the control panel 700 is ensured, and the running stability of the electric compressor 1000 is improved.

Referring to fig. 4, it can be appreciated that, in order to achieve more efficient cooling of the control board 700, the heat of the control board 700 is more rapidly transferred to the heat sink 441, and the motor-driven compressor 1000 of the present utility model further includes a heat dissipating substrate 800, wherein the heat dissipating substrate 800 is mounted in the mounting cavity 445, and the heat dissipating substrate 800 connects the control board 700 and the heat sink 441. The heat dissipation substrate 800 may be made of a metallic material or a non-metallic material having good heat dissipation properties, such as aluminum.

Referring to fig. 4, it can be understood that in order to increase the heat exchange efficiency of the cooling medium in the cooling fin 441 and the liquid storage chamber 410, the cooling fin 441 is provided in plurality, and the plurality of cooling fins 441 are spaced apart, thereby increasing the heat dissipation area. The plurality of cooling fins 441 extend along the air flow direction of the cooling medium in the liquid storage cavity 410, so that the cooling medium can quickly take away the heat of the cooling fins 441 in the flowing process, and meanwhile, the cooling fins 441 cannot block the flowing of the cooling medium.

Referring to fig. 4, it can be understood that the area occupied by the heat dissipation fins 441 is greater than or equal to the area occupied by the heat dissipation substrate 800 on the end surface of the first cover plate 440, so that the heat of the heat dissipation substrate 800 can be rapidly diffused to the heat dissipation fins 441 by direct contact. For example, in the plane of the bottom plate 442, the projection of the heat dissipating substrate 800 is located within the outer contour of the projection of the heat dissipating fins 441.

Referring to fig. 4, it can be appreciated that the control board 700 includes a high heat generating component 710, and the high heat generating component 710 is the main heat generating element of the control board 700. The high heat generating component 710 is abutted with the heat dissipating substrate 800, and the area of the heat dissipating substrate 800 is larger than or equal to the end surface area of the high heat generating component 710, so that the heat of the high heat generating component 710 can be rapidly diffused to the heat dissipating substrate 800 in a direct contact manner, and rapid cooling of the control board 700 is realized. For example, in the plane of the base plate 442, the projection of the high heat generating component 710 is located within the outer contour of the projection of the heat dissipating substrate 800.

Referring to fig. 6, as another embodiment, in order to reduce heat exchange between the reservoir chamber 410 and the motor chamber 111, a thermal insulation material is filled between a portion of the wall surface of the reservoir housing 430 and a corresponding wall surface of the motor housing 110. The heat insulating material can further limit heat conduction between the motor cavity 111 and the liquid storage cavity 410, ensure that the refrigerant in the liquid storage cavity 410 is at a lower temperature, and improve the energy efficiency of the electric compressor 1000. The heat insulating material can be made of a material with low heat conductivity coefficient, such as plastic and the like; porous materials, heat reflective materials, or vacuum materials may also be used.

Referring to fig. 6, it can be understood that a thickness L1 of the first gap between a portion of the wall surface of the reservoir case 430 and the corresponding wall surface of the motor case 110 is 5mm or more in the axial direction of the motor case 110. The parameter range is met, the heat insulation effect between the motor cavity 111 and the liquid storage cavity 410 is good, heat exchange between the motor cavity 111 with high temperature and high pressure and the liquid storage cavity 410 with low temperature and low pressure is effectively reduced, and the die drawing difficulty is small when the motor shell 110 and the liquid storage shell 400 are processed, so that the processing is more convenient.

It will be appreciated that as another example, the gap between the reservoir housing 430 and the motor housing 110 may be configured as a closed first compartment, i.e., a first compartment formed between the inner wall of the reservoir chamber 410 and the inner wall of the motor chamber 111. The first compartment may be evacuated to limit heat transfer between the motor compartment 111 and the reservoir compartment 410 for better thermal isolation. The first compartment may be further filled with a heat insulating material, which may be made of a material with poor heat conducting effect, and the heat insulating material may further limit heat conduction between the motor cavity 111 and the liquid storage cavity 410, so as to achieve a better heat insulating effect.

It is understood that the thickness of the first compartment is greater than or equal to 5mm in the axial direction of the motor housing 110. The above parameter range is satisfied, the heat insulation effect between the motor cavity 111 and the liquid storage cavity 410 is better, the heat exchange between the high-temperature high-pressure motor cavity 111 and the low-temperature low-pressure liquid storage cavity 410 is effectively reduced, and the processing is convenient.

Referring to fig. 5 and 6, it can be understood that a portion of the wall surface of the connection pipe 500 is spaced apart from the corresponding wall surface of the motor case 110, i.e., by forming an air insulating layer between the motor chamber 111 and the suction passage 510. Because the motor cavity 111 is a high-temperature high-pressure cavity and the air suction channel 510 is a low-temperature low-pressure cavity, the air heat insulation layer can effectively limit heat conduction between the motor cavity 111 and the air suction channel 510, ensure that the refrigerant in the air suction channel 510 is at a lower temperature, and improve the energy efficiency of the electric compressor 1000.

Referring to fig. 6, it can be understood that a thermal insulation material is filled between a portion of the wall surface of the connection pipe 500 and the corresponding wall surface of the motor case 110. The heat insulating material can further limit heat conduction between the motor cavity 111 and the suction channel 510, ensure that the refrigerant entering the suction port 320 of the pump body assembly 300 is at a lower temperature, and improve the energy efficiency of the electric compressor 1000. The heat insulating material can be made of a material with low heat conductivity coefficient, such as plastic and the like; porous materials, heat reflective materials, or vacuum materials may also be used.

Referring to fig. 6, it can be understood that a thickness L2 of the second gap between a portion of the wall surface of the connection pipe 500 and the corresponding wall surface of the motor case 110 is 3mm or more in the radial direction of the motor case 110. The heat insulation effect between the motor cavity 111 and the air suction channel 510 is good, the heat exchange between the high-temperature and high-pressure motor cavity 111 and the low-temperature and low-pressure air suction channel 510 is effectively reduced, and the difficulty in drawing the die during processing of the motor shell 110 and the connecting pipe 500 is small, so that the processing is more convenient.

It will be appreciated that, as another embodiment, the motor housing 110 and the connection pipe 500 may be integrally formed, and a closed second compartment is configured between the motor housing 110 and the connection pipe 500, i.e., between the inner wall of the suction channel 510 and the inner wall of the motor chamber 111. The second compartment may be evacuated to limit heat transfer between the motor compartment 111 and the suction channel 510 for better thermal insulation. The second compartment may be further filled with a heat insulating material, which may be made of a material having a poor heat conducting effect, and the heat insulating material may further limit heat conduction between the motor compartment 111 and the air suction channel 510, so as to achieve a better heat insulating effect.

It is understood that the thickness of the second compartment is greater than or equal to 3mm in the radial direction of the motor housing 110. The above parameter ranges are satisfied, the motor cavity 111 and the air suction channel 510 have better heat insulation effect, heat exchange between the high-temperature high-pressure motor cavity 111 and the low-temperature low-pressure air suction channel 510 is effectively reduced, and the processing is convenient.

Referring to fig. 5, it can be appreciated that the connection pipe 500, the motor case 110, and the reservoir case 430 are integrally formed, so that the structure is more stable, the processing cost is lower, and the assembly is faster.

Referring to fig. 6 and 7, in order to improve the stability of the connection between the reservoir housing 430 and the motor housing 110, the motor-driven compressor 1000 further includes supporting legs 900, and the supporting legs 900 are connected between the reservoir housing 430 and the motor housing 110, increasing the connection strength therebetween. It is understood that the supporting leg 900 may be welded to the reservoir housing 430 and the motor housing 110, or may be integrally cast with the reservoir housing 430 and the motor housing 110.

Referring to fig. 7, it is understood that the supporting foot 900 is provided with a plurality, for example, two, three, or four, etc. The supporting feet 900 are arranged at intervals along the circumferential direction of the motor casing 110, so that the stress between the supporting feet and the motor casing is more uniform, and the connection is more stable.

Referring to fig. 7, it will be appreciated that the support foot 900 according to the embodiment of the present utility model is provided with at least two. One of the support legs 900 has a wire through hole 910 formed therein, and one, two, or more wire through holes 910 may be provided in the wire through hole 910 for the cable of the motor assembly 200 to pass through. The wire passing holes 910 are provided in the supporting legs 900 to effectively use space and facilitate the protection of the cables. The other supporting leg 900 is fixedly connected with the connecting pipe 500, and is used for fixedly connecting the connecting pipe 500 with the motor casing 110 and the liquid storage device casing 430, and the space can be more reasonably utilized due to the partial structure of the air suction channel 510 arranged in the supporting leg 900.

Referring to fig. 8, a vehicle of an embodiment of the present utility model includes the motor-driven compressor 1000 of the above embodiment. It can be appreciated that the vehicle according to the embodiment of the present utility model may be a new energy vehicle such as an electric vehicle, a hybrid vehicle, or a fuel vehicle such as a gasoline vehicle, which is not particularly limited herein.

The motor-driven compressor 1000 may be applied to an air conditioning system of a vehicle to provide air conditioning for cooling or heating an environment within the vehicle. The electric compressor 1000 of the embodiment of the present utility model may be a rotary compressor.

In the vehicle according to the embodiment of the present utility model, with the electric compressor 1000 according to the embodiment of the first aspect, the electric compressor 1000 is provided with the liquid storage housing 400 having the liquid storage cavity 410, so that the liquid storage cavity 410 forms a low-temperature low-pressure cavity, and is communicated with the air suction port 320 of the pump body assembly 300 through the air suction channel 510 provided in the connecting pipe 500, and the pump body cavity 121 of the pump body housing 120 is communicated with the motor cavity 111 of the motor housing 110 to form a high-temperature high-pressure cavity, so that the cavity structure of the electric compressor 1000 is optimized; the wall surface of the liquid storage shell 400 is spaced from the corresponding wall surface of the motor shell 110, so that the high-temperature high-pressure cavity and the low-temperature low-pressure cavity can be spaced, a heat insulation layer is formed between the motor cavity 111 and the liquid storage cavity 410, heat exchange between the two cavities is reduced, the refrigerant in the liquid storage cavity 410 is ensured to be at a lower temperature, the suction overheat phenomenon of the pump body assembly 300 is avoided, the energy efficiency of the electric compressor 1000 is improved, and the running stability of the electric compressor 1000 is improved.

Since the vehicle adopts all the technical solutions of the electric compressor 1000 of the above embodiment, at least all the beneficial effects brought by the technical solutions of the above embodiment are provided, and will not be described in detail herein.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (12)

1. An electric compressor, comprising:

the pump comprises a pump body shell, a pump body assembly and a pump body assembly, wherein a pump body cavity is formed in the pump body shell;

the motor shell is connected with the pump body shell, and a motor cavity communicated with the pump body cavity is formed in the motor shell;

the connecting pipe is fixedly connected with the motor shell, and an air suction channel is formed in the connecting pipe;

the liquid storage shell is connected with the motor shell, a liquid storage cavity is formed in the liquid storage shell, and the liquid storage cavity is communicated with the air suction port of the pump body assembly through the air suction channel; and part of the wall surface of the liquid storage shell is arranged at intervals with the corresponding wall surface of the motor shell.

2. The motor-driven compressor according to claim 1, wherein: and heat insulation materials are filled between part of wall surfaces of the liquid storage shell and corresponding wall surfaces of the motor shell.

3. The motor-driven compressor according to claim 1 or 2, characterized in that: and along the axial direction of the motor casing, the thickness of a first gap between part of the wall surface of the liquid storage casing and the corresponding wall surface of the motor casing is more than or equal to 5mm.

4. The motor-driven compressor according to claim 1, wherein: a closed first separation cavity is formed between the inner wall of the liquid storage cavity and the inner wall of the motor cavity, and the first separation cavity is in a vacuum state or is filled with heat insulation materials.

5. The motor-driven compressor according to claim 1, wherein: and part of wall surfaces of the connecting pipes are arranged at intervals with corresponding wall surfaces of the motor casing.

6. The motor-driven compressor according to claim 5, wherein: and heat insulation materials are filled between part of wall surfaces of the connecting pipes and corresponding wall surfaces of the motor casing.

7. The motor-driven compressor according to claim 5 or 6, wherein: and along the circumferential direction of the motor casing, the thickness of a second gap between part of the wall surface of the connecting pipe and the corresponding wall surface of the motor casing is more than or equal to 3mm.

8. The motor-driven compressor according to claim 5, wherein: a closed second separation cavity is formed between the inner wall of the air suction channel and the inner wall of the motor cavity, and the second separation cavity is in a vacuum state or is filled with a heat insulation material.

9. The motor-driven compressor according to claim 1, wherein: the liquid storage shell comprises a liquid storage shell body and a cover plate, wherein the cover plate is covered at one end, far away from the motor shell body, of the liquid storage shell body, and the connecting pipe, the motor shell body and the liquid storage shell body are integrally formed pieces.

10. The motor-driven compressor according to claim 1, wherein: the electric compressor further comprises supporting feet, and the supporting feet are connected between the liquid storage shell and the motor shell.

11. The motor-driven compressor according to claim 10, wherein: the plurality of supporting legs are arranged and are arranged at intervals along the circumferential direction of the motor casing; at least one wire through hole is formed in one of the two supporting feet, and the other supporting foot is fixedly connected with the connecting pipe.

12. The vehicle is characterized in that: comprising an electric compressor according to any one of claims 1 to 11.