CN116838569A - Electric compressor, air conditioning system and vehicle - Google Patents

Abstract

The invention discloses an electric compressor, an air conditioning system and a vehicle, wherein the electric compressor comprises: the shell structure is provided with a high-pressure cavity and a refrigerant discharge port, and an exhaust path formed by a refrigerant circulating space between the high-pressure cavity and the refrigerant discharge port is included in the inner space of the shell structure; the compression structure discharges compressed refrigerant to the high-pressure cavity, and the shell structure discharges the refrigerant to the outside of the shell structure through the refrigerant discharge port; the motor is used for driving the compression structure to act so as to compress the refrigerant; a resonant cavity is formed in the shell wall of the shell structure and is respectively communicated with two different positions on the exhaust path; the sliding structure is slidably arranged in the resonant cavity and is positioned between two communication positions of the resonant cavity and the exhaust path, the resonant cavity is divided into sub-resonant cavities positioned on two sides of the sliding structure by the sliding structure, and the volume of each sub-resonant cavity can be adjusted, so that the stability of the exhaust pressure of the electric compressor in one exhaust period is improved.

Description

Electric compressor, air conditioning system and vehicle

Technical Field

The invention relates to the technical field of compressors, in particular to an electric compressor, an air conditioning system and a vehicle.

Background

At present, the electric compressor is a core component of refrigeration equipment, and when the electric compressor works, vibration noise can be generated, so that the refrigeration equipment has high working noise, and the use experience of a user is influenced.

In the related art, after the high-pressure refrigerant discharged from the compression part of the electric compressor enters the high-pressure cavity, the high-pressure refrigerant is directly discharged out of the electric compressor through the discharge hole, so that the noise and pressure pulsation of the exhaust air flow generated during the operation of the electric compressor are large, and the resonance of each component in the refrigeration equipment is easily excited, and the noise and vibration problems are caused.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to propose an electric compressor which has a small exhaust noise.

An object of the present invention is to provide an air conditioning system.

Another object of the invention is to propose a vehicle.

An electric compressor according to an embodiment of the first aspect of the present invention includes: a housing structure, in which a high-pressure chamber and a refrigerant discharge port are formed, and an exhaust path including the high-pressure chamber in an internal space of the housing structure, the exhaust path being formed by a refrigerant flowable space between the high-pressure chamber and the refrigerant discharge port; the compression structure is suitable for discharging compressed refrigerant to the high-pressure cavity, and the shell structure is suitable for discharging the refrigerant to the outside of the shell structure through the refrigerant discharge port; the motor is used for driving the compression structure to act so as to compress the refrigerant; a resonant cavity is formed in the shell wall of the shell structure and is respectively communicated with two different positions on the exhaust path; the sliding structure is arranged in the resonant cavity in a sliding manner and is positioned between two communication positions of the resonant cavity and the exhaust path, the sliding structure is suitable for dividing the resonant cavity into sub resonant cavities positioned on two sides of the sliding structure, and the sliding structure can adjust the volume of each sub resonant cavity.

According to the electric compressor provided by the embodiment of the invention, the air flow noise and pressure pulsation on the exhaust side of the shell structure are improved through the resonant cavity, and the volumes of the two sub-resonant cavities are adjusted through the sliding of the sliding structure in the resonant cavity, so that the pressure amplitude of the sub-resonant cavities is adjusted, the volumes of the sub-resonant cavities can be adjusted according to the pressure fluctuation condition of the air passage, and the exhaust pressure of the electric compressor in one exhaust period is more stable.

According to some embodiments of the invention, the exhaust path further includes a gas passage formed in and penetrating a wall of the housing structure, and the refrigerant discharge port communicates with the high pressure chamber through the gas passage.

According to some embodiments of the invention, two of the sub-resonance chambers located on both sides of the sliding structure are respectively communicated with the high-pressure chamber and the gas passage.

According to some embodiments of the invention, the motor-driven compressor further comprises an elastic member connected between the wall of the resonant cavity and the sliding structure.

According to some embodiments of the invention, the inner wall surface of the resonant cavity is provided with a communication groove, and the communication groove can communicate the sub-resonant cavities positioned at two sides of the sliding structure.

According to some embodiments of the invention, the number of the elastic pieces is two, and the two elastic pieces are respectively arranged at two sides of the sliding structure and respectively supported between the wall surface of the resonant cavity and the sliding structure.

According to some embodiments of the invention, the housing structure comprises: a high-pressure housing formed with the high-pressure chamber and the gas passage; and the partition piece is connected with the high-pressure shell, and the resonant cavity is formed in the high-pressure shell and/or the partition piece.

According to some embodiments of the invention, the end of the high pressure housing is open and the divider is provided at the open end of the high pressure housing.

According to some embodiments of the invention, the partition is provided inside the high pressure housing.

According to some embodiments of the invention, the high pressure housing and the partition are each formed with the resonant cavity therein, and the resonant cavity of the high pressure housing is in communication with the resonant cavity of the partition.

According to some embodiments of the invention, a groove opening toward the partition is formed at an end of a wall surface of the high-pressure housing, and the partition closes the opening of the groove to define the resonant cavity with the high-pressure housing.

According to some embodiments of the invention, the housing structure is provided with a first communication channel communicating the resonance chamber with the high pressure chamber.

According to some embodiments of the invention, the first communication channel is formed on the high pressure housing and/or the partition.

According to some embodiments of the invention, the groove has an inner wall and an outer wall, an end of the outer wall facing the partition is fitted with the partition, a length of the inner wall is smaller than a length of the outer wall, and an end of the inner wall facing the partition is spaced apart from the partition to form the first communication passage.

According to some embodiments of the invention, a surface of the partition facing the groove forms the first communication passage, the first communication passage spans an inner wall of the groove, and a radially outer end of the first communication passage communicates with the groove and a radially inner end communicates with the high pressure chamber.

According to some embodiments of the invention, the housing structure is provided with a second communication channel that communicates the resonance chamber with the gas channel.

According to some embodiments of the invention, the second communication channel is connected between the groove and the gas channel, the groove and the second communication channel extend in an axial direction of the housing structure, and an axial length of the groove is greater than an axial length of the second communication channel.

According to some embodiments of the invention, the second communication channel has a cross-sectional area smaller than a cross-sectional area of the gas channel.

According to some embodiments of the invention, the axial length of the groove is at least half the axial length of the high pressure housing.

According to some embodiments of the invention, the high pressure housing and the partition are each formed with the resonant cavity therein, and the resonant cavity of the high pressure housing is in communication with the resonant cavity of the partition.

According to some embodiments of the invention, the housing structure comprises a middle partition plate, the body of the motor and the compression structure are respectively arranged at two sides of the middle partition plate, a driving shaft of the motor penetrates through the middle partition plate to be connected with the compression structure, a low-pressure cavity for accommodating the body is further formed in the housing structure, a refrigerant suction inlet communicated with the low-pressure cavity is formed in the housing structure, and the compression structure sucks refrigerant from the low-pressure cavity.

According to some embodiments of the invention, the housing structure further comprises a high pressure housing and a low pressure housing, the middle partition being sandwiched between the high pressure housing and the low pressure housing, the low pressure cavity being formed between the middle partition and the low pressure housing, the high pressure cavity being formed between the middle partition and the high pressure housing.

According to some embodiments of the invention, the housing structure further comprises a high pressure housing and a low pressure housing, the middle barrier is sandwiched between the low pressure housing and the compression structure, and the high pressure housing is provided on a side of the compression structure facing away from the middle barrier.

An air conditioning system according to an embodiment of the second aspect of the present invention includes the above-described electric compressor.

The air conditioner has the same advantages as the electric compressor described above with respect to the prior art, and will not be described in detail herein.

According to an embodiment of the third aspect of the present invention, the vehicle includes the air conditioning system described above.

The vehicle has the same advantages as the air conditioning system described above over the prior art, and will not be described in detail here.

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.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a partial sectional view of a motor-driven compressor according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view II of an electric compressor according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view III of an electric compressor according to an embodiment of the present invention;

FIG. 4 is a partial cross-sectional view of a fourth motor-driven compressor according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a resonant cavity in accordance with an embodiment of the present invention;

FIG. 6 is a second cross-sectional view of a resonant cavity according to an embodiment of the present invention;

FIG. 7 is a third cross-sectional view of a resonant cavity according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a resonant cavity according to an embodiment of the present invention;

FIG. 9 is a fifth cross-sectional view of a resonant cavity according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view of a resonant cavity according to an embodiment of the present invention;

FIG. 11 is a graph of pressure fluctuations of two sub-resonant cavities P1, P2 according to an embodiment of the present invention;

FIG. 12 is a graph of pressure differential between two sub-resonant cavities P1, P2 according to an embodiment of the present invention;

fig. 13 is a schematic view of a vehicle according to an embodiment of the invention.

Reference numerals:

a vehicle 1000; an electric compressor 100; an air conditioning system 200; an exhaust path S;

a housing structure 10; a high-pressure chamber 10a; a gas passage 10b; a resonant cavity 10c; a sub-resonant cavity 101c; a communication groove 102c; a first communication passage 10d; a second communication passage 10e;

A high-pressure housing 11; a groove 111; an inner wall 1111; an outer wall 1112; a refrigerant discharge port 11a;

a partition 12; a middle separator 121; a sealing gasket 122; a low pressure housing 13; a refrigerant suction port 131;

a sliding structure 21; a connection groove 21a; an elastic member 22.

Detailed Description

Embodiments of the present invention 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 invention.

An electric compressor 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 12.

The motor-driven compressor 100 according to the embodiment of the first aspect of the present invention includes a housing structure 10, a compression structure, a motor, and a sliding structure 21, a high-pressure chamber 10a and a refrigerant discharge port 11a are formed on the housing structure 10, and a discharge path S, which is formed by a refrigerant flowable space between the high-pressure chamber 10a and the refrigerant discharge port 11a, is included in an inner space of the housing structure 10, including the high-pressure chamber 10 a.

The compression structure is used for compressing the refrigerant, the compressed refrigerant can be discharged to the high-pressure cavity 10a by the compression structure, the shell structure 10 can discharge the refrigerant to the outside of the shell structure 10 through the refrigerant discharge port 11a, and the motor is arranged on the shell structure 10 and used for driving the compression structure to act so as to compress the refrigerant.

Referring to fig. 1, a resonance chamber 10c is formed inside a wall of the case structure 10, and the resonance chamber 10c communicates with two different positions on the exhaust path S, respectively.

The exhaust path S includes a high-pressure chamber 10a and a space through which the refrigerant can circulate, that is, the resonant chamber 10c may communicate with the high-pressure chamber 10a in the exhaust path S, or may communicate with other spaces through which the refrigerant can circulate in the exhaust path S, that is, one of the two communication positions communicates with the high-pressure chamber 10a, and the other is communicated with other positions on the exhaust path S except the high-pressure chamber 10 a; the two communication positions described above may also both communicate with the high-pressure chamber 10a, but the two communication positions are located at two different positions in the high-pressure chamber 10 a. Since the two communication positions are at different positions in the exhaust path S, the pressures of the two communication positions are different.

The sliding structure 21 is slidably provided in the resonance chamber 10c, and the sliding structure 21 is disposed between two communicating positions of the resonance chamber 10c and the exhaust path S, the sliding structure 21 may partition the resonance chamber 10c into sub-resonance chambers 101c located at both sides of the sliding structure, and the sliding structure 21 may adjust the volume of each sub-resonance chamber 101 c.

It will be appreciated that, since the two sub-resonant cavities 101c are in different communication positions with the exhaust path S of the housing structure 10, a pressure difference exists between the two sub-resonant cavities 101c, so that the sliding structure 21 can be driven to slide in the resonant cavity 10c under the action of the pressure difference. Wherein, by adjusting the volume of the sub-resonant cavity 101c, the pressure amplitude of the exhaust side structure communicating with the sub-resonant cavity 101c can be adjusted, such as: reducing the volume of the sub-resonant cavity 101c can relatively increase its pressure amplitude.

Referring to fig. 1, a resonance chamber 10c communicating with an exhaust path S is formed in a shell wall of a shell structure 10 to form a cavity structure having a principle satisfying helmholtz resonance, thereby improving air flow noise and pulsation of an exhaust side of an electric compressor 100.

Specifically, the electric compressor is a core component of the refrigeration equipment for a vehicle, and vibration noise is generated when the electric compressor works, so that the vehicle noise is influenced, and the subjective hearing problem is generated. In the related art, after a high-pressure refrigerant discharged from a compression component of an electric compressor enters a high-pressure cavity, the high-pressure refrigerant directly leaves the compressor through a refrigerant discharge port, and along with exhaust airflow noise and pressure pulsation generated during operation of the electric compressor, resonance of each component in a thermal management system on a vehicle is easily excited, so that the problems of vehicle noise and vibration are caused.

According to the electric compressor 100 of the embodiment of the present invention, the resonance chamber 10c communicating with the discharge path S is provided on the housing structure 10 to form a chamber structure having a resonance principle satisfying helmholtz, thereby improving the air flow noise and pulsation of the electric compressor 100 on the discharge side, and improving the noise and pulsation of the refrigerant discharged from the electric compressor 100. When the motor-driven compressor 100 is used for the vehicle 1000, resonance problems of various components in the thermal management system of the vehicle 1000 due to exhaust gas flow noise and pressure pulsation of the motor-driven compressor 100 can be improved, and noise and vibration caused to the vehicle 1000 can be improved. Meanwhile, the sliding structure 21 slides in the resonant cavity 10c to adjust the volumes of the two sub-resonant cavities 101c to adjust the pressure amplitude of the sub-resonant cavities 101c, so that the volumes of the sub-resonant cavities 101c can be adjusted according to the pressure fluctuation condition at the exhaust path S, and the exhaust pressure of the compressor 100 in one exhaust cycle is more stable.

It should be noted that, the "helmholtz resonance principle" is well known to those skilled in the art, and on the basis of the present disclosure that "the resonance cavity 10c communicating with the exhaust path S may be provided on the housing structure 10 to form a cavity structure satisfying the helmholtz resonance principle", those skilled in the art may calculate the specific size that needs to be satisfied by the resonance cavity 10c according to the specific requirements of different working conditions, so the present disclosure does not limit the specific size.

Further, in some embodiments, the electric compressor 100 may be a horizontal compressor, and the motor and compression structure in the electric compressor 100 may be arranged in a lateral direction.

The compression structure in the application can be configured as an dynamic and static vortex disc type electric compression mechanism, and the compression structure can also be configured as a spiral type electric compression mechanism and the like, and is not particularly limited herein, that is, the compression structure can meet the compression requirement of refrigerant media. Correspondingly, the driving structure is a driving device which is suitable for driving the compression structure to execute the compression action.

In some embodiments of the present application, as shown in fig. 1, the exhaust path S further includes a gas passage 10b formed on and penetrating the wall of the housing structure 10, and the refrigerant discharge port 11a communicates with the high pressure chamber 10a through the gas passage 10 b.

After the compressed refrigerant is discharged to the high pressure chamber 10a by the compression structure, the high pressure refrigerant in the high pressure chamber 10a can be discharged to the refrigerant discharge port 11a through the gas passage 10b, and the housing structure is discharged from the refrigerant discharge port 11 a.

Wherein the resonance chamber 10c communicates with the gas passage 10b and the high-pressure chamber 10a, respectively, to improve noise and pulsation at the gas discharge passage 10b and the high-pressure chamber 10a, and the two sub-resonance chambers 101c located at both sides of the sliding structure 21 communicate with the high-pressure chamber 10a and the gas passage 10b, respectively.

Referring to fig. 7 and 8, the sliding structure 21 may slide within the resonant cavity 10c, and the sliding structure 21 may partition the resonant cavity 10c into two sub-resonant cavities 101c that do not communicate with each other. Wherein one sub-resonance chamber 101c communicates with the high-pressure chamber 10a and the other sub-resonance chamber 101c communicates with the gas passage 10b, i.e. the two sub-resonance chambers 101c communicate with the exhaust side of the housing structure 10 (including the high-pressure chamber 10a and the gas passage 10 b), respectively, so that the pressure of the two sub-resonance chambers 101c can be adjusted by the sliding action of the sliding structure 21 within the resonance chamber 10 c.

Specifically, when the sliding structure 21 slides to the side where the resonance chamber 10c communicates with the gas passage 10b, the volume of the sub-resonance chamber 101c between the sliding structure 21 and the gas passage 10b decreases, and accordingly, the volume of the sub-resonance chamber 101c between the sliding structure 21 and the high-pressure chamber 10a increases, at which time the pressure amplitude of the high-pressure chamber 10a can be reduced; when the sliding structure 21 slides to the side where the resonance chamber 10c communicates with the high-pressure chamber 10a, the volume of the sub-resonance chamber 101c between the sliding structure 21 and the gas passage 10b increases, and accordingly, the volume of the sub-resonance chamber 101c between the sliding structure 21 and the high-pressure chamber 10a decreases, at which time the pressure amplitude at the gas passage 10b can be reduced.

Thereby, the sliding movement is performed in the resonance chamber 10c by the sliding structure 21 according to the pressure fluctuation conditions of the high pressure chamber 10a and the gas passage 10b to adjust the volumes of the sub-resonance chambers 101c located at both sides of the sliding structure 21, thereby making the discharge pressure of the motor-driven compressor 100 more stable in one discharge cycle.

It should be noted that, the electric compressor 100 is configured to compress a refrigerant medium, the refrigerant medium compressed by the compression structure may be discharged to the high pressure chamber 10a, the medium in the high pressure chamber 10a may be discharged from the housing structure 10 through the gas channel 10b, and in the process of discharging the refrigerant medium by the compression structure, airflow noise and pressure pulsation will be generated.

The present application is capable of improving noise and pressure pulsation of gas flowing out through the gas passage 10b by providing the resonance chamber 10c in the housing structure 10, and since the resonance chamber 10c is communicated with a space filled with a gaseous medium (e.g., the high pressure chamber 10a, the gas passage 10 b), co-vibration of gas inside the resonance chamber 10c can be generated. Since the resonance chamber 10c in the present application is divided into two sub-resonance chambers 101c by the sliding structure 21, the two sub-resonance chambers 101c can improve the flow noise and pressure pulsation in the gas passage 10b and the high-pressure chamber 10a, respectively.

It can be appreciated that the two sub-resonance chambers 101c in the present application are respectively communicated with one of the gas passage 10b and the high-pressure chamber 10a to form a cavity structure having a principle of helmholtz resonance, so that the flow noise and pressure pulsation in the high-pressure chamber 10a and at the gas passage 10b of the electric compressor 100 are improved by the cavity structure.

Further, referring to fig. 1 to 4, the resonant cavity 10c in the present application is formed inside the wall of the housing structure 10, so that the resonant cavity 10c can be defined based on the housing structure 10 alone, without separately providing a silencer on the high pressure cavity 10a, the gas passage 10b, the compression structure, etc., so that the number of components in the electric compressor 100 can be reasonably reduced while ensuring the noise reduction effect, and the structural complexity of the electric compressor 100 can be reduced.

As shown in fig. 1 to 4, in some embodiments of the present application, an elastic member 22 is further disposed in the resonant cavity 10c, and the elastic member 22 is connected between a wall surface of the resonant cavity 10c and the sliding structure 21 to support the sliding structure 21 in the sliding direction.

It can be understood that the elastic member 22 can play a good role in limiting the sliding stroke of the sliding structure 21 in the sliding direction of the sliding structure 21, so as to prevent the problem of overlarge sliding distance of the sliding structure 21 caused by overlarge pressure transient variation of the exhaust side of the housing structure 10, avoid the communication structure of the sliding structure 21 blocking the resonant cavity 10c and the gas channel 10b or the high-pressure cavity 10a, and improve the reliability of the sliding structure 21 in adjusting the volumes of the two sub-resonant cavities 101 c. Wherein, when the motor-driven compressor 100 is in the non-operating state, the elastic member 22 may also reset the sliding structure 21.

As shown in fig. 1 to 4, in some embodiments of the present invention, the elastic member 22 is configured as a spring, both ends of which are respectively connected to the wall surface of the resonant cavity 10c and the sliding structure 21, the spring being supported between the wall surface of the resonant cavity 10c and the sliding structure 21, the sliding structure 21 compressing the spring and accumulating the spring when the sliding structure 21 slides to one side of the spring, and the spring driving the sliding structure 21 to slide to a side away from the spring when the force of driving the sliding structure 21 to compress the spring decreases.

In some embodiments of the present invention, two elastic members 22 are respectively disposed in the two sub-resonant cavities 101c, and each elastic member 22 is supported between a wall surface of the sub-resonant cavity 101c and the sliding structure 21, so that stability of the sliding process of the sliding structure 21 can be further improved, and limiting and resetting effects of the elastic members 22 on the sliding structure 21 can be improved.

Referring to fig. 1, the sliding structure 21 divides the resonant cavity 10c into two sub-resonant cavities 101c disposed at left and right intervals, and an elastic member 22 is disposed in each sub-resonant cavity 101 c. When the sliding structure 21 slides to the left, the volume of the sub-resonant cavity 101c located at the left side of the sliding structure 21 decreases, the volume of the sub-resonant cavity 101c located at the right side of the sliding structure 21 increases, and during the sliding of the sliding structure 21, the sliding structure 21 compresses the elastic member 22 at the left side and stretches the elastic member 22 at the right side.

It should be noted that the number of the elastic members 22 is at least one, and the number of the elastic members 22 is not limited to two, and the number of the elastic members 22 in the sub-resonant cavity 101c may be adjusted according to design requirements to ensure stability of the sliding process of the sliding structure 21. Such as: one or more elastic members 22 are provided in only one of the sub-resonant cavities 101c, and one or more elastic members 22 are provided in both of the sub-resonant cavities 101c.

In some embodiments of the present invention, the elastic coefficients of the two elastic members 22 are the same, so that stability during sliding of the sliding structure 21 can be improved.

In other embodiments of the present invention, the spring rate of the two spring elements 22 may also be different. The elastic coefficients of the two elastic members 22 can be adjusted according to design requirements to meet different sliding requirements of the sliding structure 21.

Referring to fig. 1, in some embodiments of the present invention, the sliding structure 21 is configured as a slider, and the cross-sectional shape of the slider is adapted to the cross-sectional shape of the resonant cavity 10c, so as to divide the resonant cavity 10c into two sub-resonant cavities 101c located at both sides of the slider by the fit of the slider with the wall surface of the resonant cavity 10 c.

As shown in fig. 3, in some embodiments of the present invention, the inner wall surface of the resonant cavity 10c is provided with a communication groove 102c, and the communication groove 102c may communicate the sub-resonant cavities 101c located at both sides of the sliding structure 21.

Wherein the sliding structure 21 is limited to sliding between the first position and the second position by the elastic member 22. Referring to fig. 7 and 8, when the sliding structure 21 is located at the first position, the sub-resonance chambers 101c located at both sides of the sliding structure 21 communicate; when the slide structure 21 is located at the second position, the sub-resonance chambers 101c located at both sides of the slide structure 21 are not communicated.

It will be appreciated that when the slider structure is slid from the second position to the first position, the two sub-resonant cavities 101c are switched from the non-communication state to the communication state, and the pressure fluctuation in the two sub-resonant cavities 101c will be abrupt. When the two sub-resonant cavities 101c are switched to the communication state, the volumes of the two sub-resonant cavities 101c are instantaneously increased to the sum of the volumes of the two sub-resonant cavities 101c, and at this time, the pressure in the resonant cavity 10c will be suddenly changed to meet various pressure adjustment requirements.

In some embodiments of the present invention, the communication groove 102c is configured as a groove structure, and the communication groove 102c is further recessed from the inner wall surface of the resonance chamber 10c in the thickness direction to be avoided. Wherein the communication groove 102c is provided at the side of the sub-resonance chamber 101c communicating with the high pressure chamber 10a, and when the pressure in the gas passage 10b is excessively large, the sliding structure 21 slides toward the side of the sub-resonance chamber 101c communicating with the high pressure chamber 10a to adjust the pressure in the gas passage 10 b. If the sliding structure 21 still cannot meet the requirement of adjusting the pressure in the gas channel 10b, the sliding structure 21 will further slide to the first position toward the side of the sub-resonant cavity 101c communicating with the high-pressure cavity 10a, and at this time, the two sub-resonant cavities 101c communicate with each other, so that the pressure in the gas channel 10b can be quickly adjusted, and the excessive pressure in the gas channel 10b can be avoided.

The extension length and the installation position of the communication groove 102c may be adaptively adjusted according to the requirements of the pressure adjustment of the high pressure chamber 10a and the gas passage 10b, the length dimension of the resonant chamber 10c, and the like.

As shown in fig. 4, in a further embodiment of the present invention, the slider is provided with a connection groove 21a, the connection groove 21a is provided on a side surface of the slider opposite to the communication groove 102c, and the communication groove 102c is formed at an end of the slider remote from the communication groove 102c, and the connection groove 21a communicates with the sub-resonance chamber 101c communicating with the gas passage 10 b.

It is understood that when the communication groove 102c corresponds at least partially to the connection groove 21a in the sliding direction of the slider, the communication groove 102c communicates with the connection groove 21a to communicate the two sub-resonance chambers 101c. With further reference to fig. 3, by providing the connecting groove 21a in the slider, the sliding stroke of the slider can be reasonably shortened, that is, the slider can slide for a shorter distance to realize the communication between the two sub-resonance cavities 101c.

Note that, the "communication groove" may be formed on the slider, such as: the "communication groove" is provided through the slider in the sliding direction, and the wall surface of the resonant cavity 10c is formed with a ridge structure that is adapted to the cross-sectional shape of the "communication groove" on the slider, and the ridge structure may be embedded in the "communication groove" to partition the resonant cavity 10c into two sub-resonant cavities 101c by the slider. Wherein, when the slider slides to a position where the ridge structure is disengaged from the "communicating groove", the two sub-resonance chambers 101c can communicate through the "communicating groove".

As shown in fig. 1-4, in some embodiments of the present invention, a housing structure 10 includes: a high-pressure housing 11 and a partition 12, and a gas passage 10b is formed in the high-pressure housing 11. Wherein the partition 12 is connected to the high-pressure housing 11 and defines a high-pressure chamber 10a.

Wherein the resonance chamber 10c is formed in the high-pressure housing 11 and/or the partition 12. That is, the resonance chamber 10c may be formed only in the high-pressure housing 11; the resonance chamber 10c may be formed only in the partition 12; the resonance chamber 10c may be formed in the high-pressure housing 11 and the partition 12.

Further, the resonance chamber 10c may be defined by the high-pressure housing 11; the resonant cavity 10c may be defined by a partition 12; the resonance chamber 10c may also be defined by the high-pressure housing 11 and the partition 12 together. When the resonance chamber 10c is defined solely by the high-pressure casing 11 or the partition 12, the resonance chamber 10c may be formed in the casing wall of the high-pressure casing 11 or the partition 12.

1-4, when the chamber structure of the resonant cavity 10c is defined by the partition 12 and the high-pressure casing 11 together, the high-pressure casing 11 and the partition 12 each have a portion constituting a wall surface of the resonant cavity 10c, and the resonant cavity 10c communicating with the high-pressure cavity 10a is defined by connection cooperation of the high-pressure casing 11 and the partition 12. It will be appreciated that configuring the resonant cavity 10c as a chamber structure defined by the partition 12 and the high-pressure housing 11 together can reduce the difficulty of processing the resonant cavity 10c.

In some embodiments of the present invention, the number of the resonant cavities 10c is plural, and the arrangement of the resonant cavities 10c can further enhance the effect of improving the air flow noise and pressure pulsation on the exhaust side of the housing structure 10.

Wherein a plurality of resonance chambers 10c may be formed on the high-pressure housing 11; a plurality of resonance chambers 10c may be formed on the high-pressure housing 11; the high-pressure housing 11 and the partition 12 are each formed with a resonance chamber 10c, and each resonance chamber 10c is relatively independent and does not communicate with each other.

In some embodiments of the present invention, the high-pressure housing 11 and the partition 12 are each formed with a resonance chamber 10c therein, each resonance chamber 10c communicates with the high-pressure chamber 10a or the gas passage 10b, and the resonance chamber 10c of the high-pressure housing 11 is disposed in communication with the resonance chamber 10c of the partition 12, and the sliding structure 21 may be optionally disposed in the resonance chamber 10c of the high-pressure housing 11 and/or the partition 12 according to the disposition requirement. Wherein the resonance chamber 10c of the high-pressure housing 11 and the resonance chamber 10c of the partition 12 may communicate with each other through a communication structure such as a communication hole. It will be appreciated that the provision of the sliding structure 21 within at least one of the resonant cavities 10c also enables pressure regulation at the gas channel 10b due to the communication between the plurality of resonant cavities 10 c.

As shown in fig. 1 to 4, in some embodiments of the present invention, an end surface of the high-pressure housing 11 connected to the partition 12 is formed with a groove 111 open toward the partition 12, and the partition 12 shields the opening of the groove 111 to define a resonant cavity 10c with the high-pressure housing 11.

Referring to fig. 1, a groove 111 is formed in a wall surface of the high-pressure casing 11, and the groove 111 is recessed in an axial direction of the high-pressure casing 11 from an end surface of the high-pressure casing 11 against which the partition 12 abuts, the partition 12 may block an opening of the groove 111 to define a resonance chamber 10c with the groove 111 when the partition 12 is in coupling engagement with the high-pressure casing 11.

Wherein the recessed direction of the groove 111 is the axial direction of the high-pressure casing 11, and the wall surface of the high-pressure casing 11 also extends in the axial direction, so that the recessed depth of the groove 111 can be increased. It will be appreciated that the depth of recess 111 will affect the size of the resonant cavity 10c, and that the greater the depth of recess 111, and correspondingly the longer the size of the resonant cavity 10c, thereby enhancing the damping effect of the resonant cavity 10c on noise and pressure pulsations on the discharge side of the motor-driven compressor 100, while increasing the sliding travel of the sliding structure 21, further increasing the range of volume variation of the sub-resonant cavity 101c, to enhance the ability to regulate the pressure at the gas passage 10 b.

As shown in fig. 1 to 4, in some embodiments of the present invention, the groove 111 is configured as a concave structure with a uniform cross section, that is, the cross section shape and size of the groove 111 are uniform at any position in the concave direction of the groove 111 (i.e., the axial direction of the high pressure housing 11), so that the processing difficulty of the groove 111 can be reduced.

In some embodiments of the present invention, the resonance chamber 10c extends in the axial direction of the high-pressure casing 11, and the gas passage 10b extends in the radial direction of the high-pressure casing 11, i.e., the extending direction of the gas passage 10b is perpendicular to the extending direction of the resonance chamber 10c, thereby facilitating the processing of the resonance chamber 10c, the gas passage 10b, and the communication of the resonance chamber 10c with the gas passage 10 b.

In some embodiments of the present invention, the groove 111 includes a first section transition section 111b and a second section connected in sequence in a concave direction, the first section having a larger cross-sectional dimension than the second section, and the cross-sectional dimension of the transition section 111b gradually decreases from an end of the transition section 111b connected to the first section to an end of the transition section 111b connected to the second section. It can be understood that when the groove 111 is configured as a multi-stage concave structure having a varying cross-sectional dimension, it is equivalent to opening the communication groove 102c in the radial direction of the first stage having a larger cross-sectional dimension than the second stage.

It should be noted that, the structure of the groove 111 is not limited to the multi-stage concave structure and the concave structure with uniform cross section, but may be a concave structure with gradually changed cross section, that is, the shape and size of the groove 111 may be designed according to the design requirement.

As shown in fig. 1 and 2, in some embodiments of the present invention, the resonance chamber 10c is formed with a first communication passage 10d communicating with the high-pressure chamber 10a, thereby communicating the resonance chamber 10c with the high-pressure chamber 10 a. The sound wave and the air flow in the high-pressure chamber 10a can enter the resonance chamber 10c through the first communication passage 10d and cause resonance, thereby improving the air flow noise and the pressure pulsation in the high-pressure chamber 10a through the resonance chamber 10 c.

In some embodiments of the present invention, the first communication channel 10d is provided on the wall surface of the recess 111 and/or the partition 12. Wherein the first communication passage 10d may be provided only on the wall surface of the groove 111; the first communication passage 10d may be provided only on the partition 12; the first communication passage 10d is defined by the wall surface of the groove 111 and the partition 12 together.

In a further embodiment of the present invention, as shown in fig. 1, the groove 111 has an inner wall 1111 and an outer wall 1112, an end of the outer wall 1112 facing the partition 12 is fitted to the partition 12, a length of the inner wall 1111 is smaller than a length of the outer wall 1112, and an end of the inner wall 1111 facing the partition 12 is spaced apart from the partition 12 to form the first communication passage 10d.

Here, "inner wall 1111" refers to a wall surface on the inner side of the groove 111 in the radial direction, that is, a wall surface of the groove 111 adjacent to the high-pressure chamber 10a, and "outer wall 1112" refers to a wall surface on the outer side of the groove 111 in the radial direction, that is, a wall surface of the groove 111 away from the high-pressure chamber 10a.

Specifically, referring to fig. 1, the partition 12 is provided at an end of the high-pressure housing 11 in the axial direction and opposite to the opening of the groove 111, and when the length of the inner wall 1111 in the axial direction is smaller than that of the outer wall 1112 in the axial direction, a gap may be reserved between the inner wall 1111 and the partition 12 to form the first communication passage 10d described above. The first communication passage 10d is formed in a simple manner, that is, the first communication passage 10d described above can be formed only by processing the end portion of the groove 111.

As shown in fig. 2, in some embodiments of the present invention, the surface of the partition 12 facing the groove 111 forms a first communication passage 10d, the first communication passage 10d spans the inner wall 1111 of the groove 111, and the radially outer end of the first communication passage 10d communicates with the groove 111 and the radially inner end communicates with the high pressure chamber 10a.

Wherein the groove 111 is provided on the radially outer side of the high-pressure chamber 10a so that the radially outer end of the first communication passage 10d formed on the partition 12 communicates with the groove 111 and the radially inner end communicates with the high-pressure chamber 10a, whereby the first communication passage 10d can be formed by merely opening a groove structure, a hole structure, or the like in the partition 12, and the inner wall 1111 of the groove 111 and the end of the outer wall 1112 of the groove adjacent to the side of the partition 12 can be held flush to reduce the difficulty in processing the high-pressure housing 11.

Referring to fig. 2, the surface of the partition 12 facing the groove 111 is provided with a groove structure recessed from the surface of the partition 12 opposite to the groove 111 to the side away from the groove 111, and the groove structure corresponds at least partially to the open end port of the groove 111 in the radial direction.

As shown in fig. 1, a first communication passage 10d is formed on the wall surface of the recess 111, the first communication passage 10d penetrating in the thickness direction of the wall surface of the recess 111 to communicate the resonance chamber 10c with the high-pressure chamber 10 a.

Further, the first communication passage 10d is formed at the end of the groove 111, so that the difficulty in processing the first communication passage 10d can be reduced, such as: the end of the wall surface of the groove 111 may be notched. When the partition 12 is coupled to the high pressure housing 11, the partition 12 may define a first communication passage 10d at a gap of the groove 111.

As shown in fig. 2, a first communication passage 10d is formed on the partition 12, the first communication passage 10d being provided on a surface of the partition 12 that is disposed opposite to the high-pressure casing 11, and being configured as a groove structure that opens toward the high-pressure casing 11 side, a portion of the opening of the groove structure being opposed to the opening of the groove 111, and a portion of the opening of the groove structure being in correspondence with the high-pressure chamber 10a, so that the high-pressure chamber 10a is communicated with the groove 111 through the first communication passage 10d.

As shown in fig. 1, in some embodiments of the present application, a wall surface of the groove 111 is formed with a second communication passage 10e communicating with the gas passage 10b, thereby communicating the resonance chamber 10c with the gas passage 10 b. The sound wave and the gas flow at the gas passage 10b can enter the resonance chamber 10c through the second communication passage 10e and cause resonance, thereby improving the gas flow noise and the pressure pulsation at the gas passage 10b through the resonance chamber 10 c.

As shown in fig. 1, in some embodiments of the present application, the second communication passage 10e is connected between the groove 111 and the gas passage 10b, the groove 111 and the second communication passage 10e extend in the axial direction of the housing structure 10, and the axial length of the groove 111 is greater than the axial length of the second communication passage 10 e.

Among them, the second communication passage 10e in the present application is formed on a wall surface of the groove 111 provided adjacent to the gas passage 10b, and the second communication passage 10e penetrates the wall surface to communicate the resonance chamber 10c with the gas passage 10 b.

It will be appreciated that, in order to reasonably increase the volume of the resonant cavity 10c, the thickness of the wall surface between the groove 111 and the gas channel 10b may be reduced, and accordingly the axial length of the second communication channel 10e may be reduced, whereby configuring the axial length of the groove 111 to be greater than the axial length of the second communication channel 10e may ensure the volume of the resonant cavity 10c formed, further enhancing the effect of the resonant cavity 10c in improving noise and turbulence.

As shown in fig. 1, in some embodiments of the present invention, the axial length of the groove 111 is at least half of the axial length of the high-pressure housing 11, so that the length of the groove 111 in the axial direction can be increased as much as possible to increase the volume of the resonant cavity 10a, thereby improving the noise and pulsation effects of the resonant cavity 10 a.

Specifically, the high-pressure casing 11 is formed with the high-pressure chamber 10a, and the groove 111 is formed in the wall surface of the high-pressure casing 11, and when the opening size of the groove 111 is constant, the volume of the resonance chamber 10c formed by the groove 111 can be reasonably increased by increasing the recessed depth of the groove 111 in the axial direction, so that the resonance chamber 10c can be further lifted, and the noise and turbulence effect of the electric compressor 1000 on the exhaust side can be improved.

It will be appreciated that, with reference to fig. 1, when it is desired to keep the resonance chamber 10c in communication with the gas passage 10b, the resonance chamber 10c and the gas passage 10b are simultaneously arranged on the same side of the high-pressure chamber 10a, thereby ensuring the communication effect of the resonance chamber 10c with the gas passage 10 b. Thus, a space for forming the gas passage 10b needs to be reserved on the wall of the high-pressure housing 11 where the groove 111 is formed, to form the gas passage 10b at a position suitable for communication with the high-pressure chamber 10 a.

Referring to fig. 1, in some embodiments of the present invention, the cross-sectional area of the second communication channel 10e is smaller than the cross-sectional area of the gas channel 10b, so that a large amount of gaseous medium can be prevented from entering the resonant cavity 10c through the second communication channel 10e, and the discharge effect of the gaseous refrigerant medium from the gas channel 10b is ensured. It is understood that if the cross-sectional size of the second communication passage 10e is excessively large, the effect of the resonance chamber 10c on improving the air flow noise and the pressure pulsation will be affected.

In some embodiments of the present invention, the partition 12 is configured as a partition plate, the housing structure 10 further includes a low pressure housing 13, an inlet of the refrigerant medium is formed on the low pressure housing 13, the partition plate is disposed between the low pressure housing 13 and the high pressure housing 11, and the compression structure is mounted to the partition plate, and the refrigerant medium entering the housing structure 10 through the inlet can enter the compression structure. The low pressure housing 13 and the high pressure housing 11 are provided with two openings which are oppositely arranged, and the partition plates are arranged at the end parts of the low pressure housing 13 and the high pressure housing 11 and respectively fit with the end surfaces of the low pressure housing 13 and the high pressure housing 11 in a fitting way.

In some embodiments of the present invention, the housing structure 10 may be coupled to and cooperate with a tube structure, and the refrigerant medium is delivered to the compression structure via the tube structure, and compressed by the compression structure.

In some embodiments of the present application, the partition 12 is provided inside the high-pressure casing 11, the high-pressure casing 11 is formed with an open chamber structure, and the partition 12 is disposed inside the high-pressure casing 11.

In other embodiments of the present application, the end of the high pressure housing 11 is open, and the partition 12 is provided at the open end of the high pressure housing, the partition 12 being provided at the end of the high pressure housing 11.

In some embodiments of the present application, the partition 12 may include only the middle partition 121, and in this case, if the resonance chamber 10c is formed on the high-pressure housing 11, an end of the resonance chamber 10c that is open toward the partition 12 may be sealed by the middle partition 121; alternatively, the partition 12 may also include both the middle partition 121 and the sealing gasket 122, and the sealing gasket 122 is provided between the middle partition 121 and the high-pressure casing 11, in which case, if the resonance chamber 10c is formed on the high-pressure casing 11, the end of the resonance chamber 10c that is open toward the partition 12 may be sealed by the sealing gasket 122 to promote sealability between the partition 12 and the high-pressure casing 11.

In some embodiments of the present application, the refrigerant medium is one of R134a, R744, R290, and R1234yf, and the motor-driven compressor 100 of the present application is suitable for use in one of the above-mentioned refrigerant mediums.

In some embodiments of the application, the compression structure is configured as one of a scroll-type electric compression mechanism, a rotor-type electric compression mechanism, and a piston-type electric compression mechanism. Thus, the electric compressor 100 in the present application may be configured as one of a scroll type electric compressor, a piston type electric compressor, and a rotor type electric compressor.

In some embodiments, the housing structure 10 includes a middle partition plate 121, the body and the compression structure of the motor are disposed on two sides of the middle partition plate 121, the driving shaft of the motor is disposed through the middle partition plate 121 to be connected with the compression structure, a low pressure chamber for accommodating the body of the motor is further formed in the housing structure 10, a refrigerant suction port 131 communicating with the low pressure chamber is formed on the housing structure 10, and the compression structure sucks the refrigerant from the low pressure chamber.

Thus, the electric compressor 100 may be a low back pressure compressor, which is advantageous for new energy vehicles such as electric vehicles and hybrid vehicles, and when used in these vehicles 1000, it is possible to improve the noise and pressure pulsation of the exhaust air flow due to the electric compressor 100, improve the resonance problem of the thermal management system of the vehicle 1000, and improve the noise and vibration caused to the vehicle 1000.

In a further embodiment, the housing structure 10 further comprises a high pressure housing 11 and a low pressure housing 13, the middle partition 121 being sandwiched between the high pressure housing 11 and the low pressure housing 13, the low pressure cavity being formed between the middle partition 121 and the low pressure housing 13, the high pressure cavity 10a being formed between the middle partition 121 and the high pressure housing 11.

In some embodiments, the middle partition 121 is sandwiched between the low pressure casing 13 and the high pressure casing 11, the high pressure chamber 10a is located between the middle partition 121 and the high pressure casing 11, and the compression structure is disposed within the high pressure chamber 10 a. Therefore, the structure can be simplified, the assembly is simplified, the production efficiency is improved, and the connection reliability is improved. For example, such a structure may be applied to a rotary compressor, but the structure of the rotary compressor is not limited thereto. Further, such a structure is also applicable to a scroll compressor, but the structure of the scroll compressor is not limited thereto.

The air conditioning system 200 according to the embodiment of the second aspect of the present invention may include the electric compressor according to any of the embodiments of the first aspect of the present invention, since the exhaust noise and pulsation of the electric compressor 100 according to any of the embodiments of the first aspect of the present invention may be improved, the pressure pulsation and noise problem caused to the air conditioning system 200 due to the exhaust air flow noise and pressure pulsation of the electric compressor 100 may be improved when the electric compressor 100 is used in the air conditioning system 200.

The vehicle 1000 according to the third embodiment of the present invention includes the air conditioning system 200 described in any of the above embodiments. Here, the vehicle 1000 may be a new energy vehicle.

In some embodiments, the new energy vehicle may be a pure electric vehicle having an electric motor as a main driving force, and in other embodiments, the new energy vehicle may be a hybrid vehicle having an internal combustion engine and an electric motor as main driving forces at the same time.

Regarding the internal combustion engine and the motor that supply driving power to the new energy vehicle mentioned in the above embodiments, the internal combustion engine may use gasoline, diesel oil, hydrogen gas, or the like as fuel, and the manner of supplying electric power to the motor may use a power battery, a hydrogen fuel cell, or the like, without being particularly limited thereto. The present invention is not limited to the structure of the new energy vehicle and the like.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "plurality" means two or more.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (25)

1. An electric compressor, comprising:

a housing structure, in which a high-pressure chamber and a refrigerant discharge port are formed, and an exhaust path including the high-pressure chamber in an internal space of the housing structure, the exhaust path being formed by a refrigerant flowable space between the high-pressure chamber and the refrigerant discharge port;

The compression structure is suitable for discharging compressed refrigerant to the high-pressure cavity, and the shell structure is suitable for discharging the refrigerant to the outside of the shell structure through the refrigerant discharge port;

the motor is used for driving the compression structure to act so as to compress the refrigerant;

a resonant cavity is formed in the shell wall of the shell structure and is respectively communicated with two different positions on the exhaust path;

the sliding structure is arranged in the resonant cavity in a sliding manner and is positioned between two communication positions of the resonant cavity and the exhaust path, the sliding structure is suitable for dividing the resonant cavity into sub resonant cavities positioned on two sides of the sliding structure, and the sliding structure can adjust the volume of each sub resonant cavity.

2. The motor-driven compressor according to claim 1, wherein the discharge path further includes a gas passage formed in and penetrating a shell wall of the housing structure, the refrigerant discharge port being in communication with the high-pressure chamber through the gas passage.

3. The motor-driven compressor according to claim 2, wherein two of the sub-resonance chambers located at both sides of the sliding structure are respectively communicated with the high-pressure chamber and the gas passage.

4. The motor-driven compressor of claim 1, further comprising an elastic member connected between a wall surface of the resonant cavity and the sliding structure.

5. The motor-driven compressor according to claim 4, wherein an inner wall surface of the resonance chamber is provided with a communication groove, and the communication groove communicates the sub-resonance chambers located at both sides of the sliding structure.

6. The motor-driven compressor of claim 4, wherein the number of the elastic members is two, and the two elastic members are respectively disposed at both sides of the sliding structure and are respectively supported between the wall surface of the resonant cavity and the sliding structure.

7. The motor-driven compressor according to claim 1, wherein the housing structure includes:

a high-pressure housing formed with the high-pressure chamber and the gas passage;

and the partition piece is connected with the high-pressure shell, and the resonant cavity is formed in the high-pressure shell and/or the partition piece.

8. The motor-driven compressor according to claim 7, wherein an end of the high-pressure housing is opened, and the partition is provided at the opened end of the high-pressure housing.

9. The motor-driven compressor according to claim 7, wherein the partition is provided inside the high-pressure housing.

10. The motor-driven compressor according to claim 7, wherein the high-pressure housing and the partition are each formed with the resonance chamber therein, and the resonance chamber of the high-pressure housing communicates with the resonance chamber of the partition.

11. The motor-driven compressor according to claim 7, wherein a wall end of the discharge casing high-pressure casing is formed with a groove opening toward the partition closing the opening of the groove to define the resonance chamber with the discharge casing high-pressure casing.

12. The motor-driven compressor according to claim 7, wherein the housing structure is provided with a first communication passage that communicates the resonance chamber with the high-pressure chamber.

13. The motor-driven compressor according to claim 12, wherein the first communication passage is formed on the high-pressure housing and/or the partition.

14. The motor-driven compressor of claim 13, wherein the groove has an inner wall and an outer wall, an end of the outer wall facing the partition is fitted with the partition, a length of the inner wall is smaller than a length of the outer wall, and an end of the inner wall facing the partition is spaced apart from the partition to form the first communication passage.

15. The motor-driven compressor according to claim 13, wherein a surface of the partition facing the groove forms the first communication passage, the first communication passage spans an inner wall of the groove, and a radially outer end of the first communication passage communicates with the groove and a radially inner end communicates with the high-pressure chamber.

16. The motor-driven compressor according to claim 1, wherein the housing structure is provided with a second communication passage that communicates the resonance chamber with the gas passage.

17. The motor-driven compressor according to claim 16, wherein the second communication passage is connected between the groove and the gas passage, the groove and the second communication passage extend in an axial direction of the housing structure, and an axial length of the groove is greater than an axial length of the second communication passage.

18. The motor-driven compressor of claim 16, wherein a cross-sectional area of the second communication passage is smaller than a cross-sectional area of the gas passage.

19. The electric compressor of claim 11, wherein an axial length of the groove is at least half an axial length of the high pressure housing.

20. The motor-driven compressor according to claim 11, wherein the high-pressure housing and the partition are each formed with the resonance chamber therein, and the resonance chamber of the high-pressure housing communicates with the resonance chamber of the partition.

21. The motor-driven compressor according to claim 1, wherein the housing structure includes a middle partition plate, the body of the motor and the compression structure are disposed on both sides of the middle partition plate, a driving shaft of the motor is disposed through the middle partition plate to be connected with the compression structure, a low pressure chamber accommodating the body is further formed in the housing structure, a refrigerant suction port communicating with the low pressure chamber is formed in the housing structure, and the compression structure sucks refrigerant from the low pressure chamber.

22. The motor-driven compressor of claim 21, wherein the housing structure further comprises a high pressure housing and a low pressure housing, the middle partition being interposed between the high pressure housing and the low pressure housing, the low pressure chamber being formed between the middle partition and the low pressure housing, the high pressure chamber being formed between the middle partition and the high pressure housing.

23. The motor-driven compressor of claim 21, wherein the housing structure further comprises a high pressure housing and a low pressure housing, the middle barrier being sandwiched between the low pressure housing and the compression structure, the high pressure housing being disposed on a side of the compression structure facing away from the middle barrier.

24. An air conditioning system comprising an electric compressor according to any one of claims 1-23.

25. A vehicle comprising an air conditioning system according to claim 24.