High pressure housing assembly, electric compressor, air conditioning system and vehicle

Abstract

The application discloses a high-pressure shell assembly, an electric compressor, an air conditioning system and a vehicle. The high-pressure shell assembly comprises a high-pressure shell, a high-pressure cavity and a refrigerant discharge port are formed on the high-pressure shell, a compression component of the electric compressor is adapted to discharge compressed refrigerant to the high-pressure cavity, the high-pressure cavity is adapted to discharge refrigerant outside the high-pressure shell through the refrigerant discharge port, and a refrigerant flowable space from the high-pressure cavity to the refrigerant discharge port, including the high-pressure cavity, in an internal space of the high-pressure shell constitutes an exhaust path; a resonance cavity and a communication channel are further formed on the high-pressure shell, the resonance cavity is communicated with the exhaust path through the communication channel, a first opening formed by machining the resonance cavity is formed on a surface of the high-pressure shell, and the high-pressure shell assembly comprises an end cover arranged on the first opening. According to the high-pressure shell assembly, the exhaust noise and pressure pulsation of the electric compressor can be improved.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a high-pressure housing assembly, an electric compressor, an air conditioning system, and a vehicle. Background Technology

[0002] The electric compressor is a core component of vehicle refrigeration equipment. Its operation generates vibration and noise, affecting vehicle noise levels and creating subjective auditory problems. In related technologies, the high-pressure refrigerant discharged from the electric compressor's compression component enters the high-pressure chamber and then leaves the compressor directly through the refrigerant outlet. The exhaust noise and pressure pulsations generated during the electric compressor's operation can easily trigger resonance in various components of the vehicle's thermal management system, leading to vehicle noise and vibration issues. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a high-pressure housing assembly that can improve exhaust noise and pressure pulsation in electric compressors.

[0004] The present invention also proposes an electric compressor having the above-mentioned high-pressure housing assembly.

[0005] The present invention also proposes an air conditioning system having the above-mentioned electric compressor.

[0006] The present invention also proposes a vehicle having the above-mentioned air conditioning system.

[0007] A high-pressure housing assembly for an electric compressor according to a first aspect of the present invention includes: a high-pressure housing having a high-pressure chamber and a refrigerant outlet formed thereon; a compression component of the electric compressor being adapted to discharge compressed refrigerant into the high-pressure chamber; the high-pressure chamber being adapted to discharge refrigerant out of the high-pressure housing through the refrigerant outlet; an exhaust path being formed in the internal space of the high-pressure housing, including the high-pressure chamber and a refrigerant flow space from the high-pressure chamber to the refrigerant outlet; a resonant cavity and a connecting channel being formed on the high-pressure housing; the resonant cavity communicating with the exhaust path through the connecting channel; a first opening formed by machining the resonant cavity being formed on the surface of the high-pressure housing; and an end cap covering the first opening. The high-pressure housing assembly for an electric compressor according to the present invention can improve the exhaust noise and pressure pulsation of the electric compressor.

[0008] In some embodiments, the resonant cavity is orifice-shaped, the first opening is formed at at least one side of the orifice end of the resonant cavity, and the flow area of ​​the connecting channel is smaller than the flow area of ​​the resonant cavity.

[0009] In some embodiments, the resonant cavity is blind-shaped, and the first opening is formed at the opening side hole end of the resonant cavity.

[0010] In some embodiments, the communication channel includes a first channel, one end of which is configured as a first communication port formed on the closed-side end of the resonant cavity.

[0011] In some embodiments, the centerline of the first channel is located on the extension of the centerline of the resonant cavity.

[0012] In some embodiments, an oil separator is also formed on the high-pressure housing, through which the high-pressure housing exhausts gas to the refrigerant outlet. The centerline of the resonant cavity extends toward the oil separator along a direction from the open side to the closed side. The first channel is located between the resonant cavity and the oil separator, and the other end of the first channel is configured as a second communication port formed on the cavity wall of the oil separator.

[0013] In some embodiments, the communication channel includes a second channel, one end of which is configured as a third communication port formed on the periphery wall of the resonant cavity.

[0014] In some embodiments, the high-pressure housing has a shell end face, the shell end face having a second opening formed by machining the high-pressure cavity, the resonant cavity being located on the side of the high-pressure cavity away from the shell end face, and the other end of the second channel being configured as a fourth communication port formed on the cavity wall of the high-pressure cavity.

[0015] In some embodiments, the high-pressure housing has a shell end face, the shell end face having a second opening formed by machining the high-pressure cavity, and an oil separator is also formed on the high-pressure housing, the high-pressure cavity venting to the refrigerant outlet through the oil separator, and the other end of the second channel being constructed as a fifth connecting port formed on the cavity wall of the oil separator.

[0016] In some embodiments, the resonant cavity and the high-pressure cavity are located on both sides of the oil separator cavity, and the high-pressure housing also has an oil return channel connecting the oil separator cavity and the end face of the housing, wherein the center line of the second channel is located on the extension line of the center line of the oil return channel.

[0017] In some embodiments, at least one of the connecting channels and the resonant cavity satisfy the following relationship: h is less than or equal to 0.3 times H, where h is the distance in the direction of gravity between the highest point of the connecting channel and the resonant cavity in the direction of gravity and the lowest point of the resonant cavity in the direction of gravity, and H is the distance in the direction of gravity between the highest point of the resonant cavity and the lowest point of the resonant cavity in the direction of gravity.

[0018] In some embodiments, the high-pressure housing has a shell end face, the shell end face having a second opening formed by machining the high-pressure cavity, and the resonant cavity being located on the side of the high-pressure cavity away from the shell end face.

[0019] In some embodiments, the communication channel includes at least one direct connection channel that penetrates the cavity wall of the high-pressure cavity to connect the high-pressure cavity with the resonant cavity.

[0020] In some embodiments, an oil separator chamber is also formed on the high-pressure housing, through which the high-pressure housing exhausts gas to the refrigerant outlet. The high-pressure housing assembly also includes an oil separator component disposed in the oil separator chamber, and the communication channel is directly connected to at least one of the high-pressure housing and the oil separator chamber.

[0021] In some embodiments, the high-pressure housing has a shell end face, the shell end face has a second opening formed by machining the high-pressure cavity, the high-pressure housing also has an oil separator cavity formed thereon, the outlet of the oil separator cavity penetrates the high-pressure housing to form the refrigerant outlet, and the resonant cavity and the oil separator cavity are both located on the side of the high-pressure cavity away from the shell end face.

[0022] In some embodiments, the communication channel includes at least one direct connection channel that penetrates the cavity wall of the high-pressure cavity to connect the high-pressure cavity with the resonant cavity.

[0023] In some embodiments, the high-pressure housing also has an oil return channel connecting the oil separator chamber and the end face of the housing. The connecting channel includes at least one indirect channel. The resonant cavity and the high-pressure cavity are located on both sides of the oil separator chamber. The centerline of the indirect channel is located on the extension line of the centerline of the oil return channel and penetrates the cavity wall of the oil separator chamber, so as to indirectly connect the oil separator chamber and the resonant cavity.

[0024] In some embodiments, the oil separator chamber is orifice-shaped, and the centerline of the resonant cavity and the centerline of the oil separator chamber are located on the same cross-section or the same longitudinal section of the electric compressor.

[0025] In some embodiments, the high-pressure housing assembly includes a pressure protection device disposed on the end cap.

[0026] In some embodiments, the housing component further includes: a partition plate, the compression component and the motor body are respectively disposed on both sides of the partition plate, and the drive shaft passes through the partition plate to connect with the compression component;

[0027] A low-pressure housing is formed between the low-pressure housing and the middle partition to accommodate the motor body. A refrigerant inlet communicating with the low-pressure cavity is formed on the low-pressure housing, and the compression component draws refrigerant from the low-pressure cavity.

[0028] In some embodiments, the partition is sandwiched between the low-pressure housing and the compression component, and the high-pressure housing is located on the side of the compression component opposite to the partition.

[0029] In some embodiments, the partition plate is sandwiched between the low-pressure housing and the high-pressure housing, the high-pressure chamber is located between the partition plate and the high-pressure housing, and the compression component is disposed within the high-pressure chamber.

[0030] An electric compressor according to a second aspect of the present invention includes: a housing component, the housing component including a high-pressure housing assembly for an electric compressor as described in a first aspect of the present invention; a compression component, the exhaust port of the compression component communicating with the high-pressure chamber to discharge compressed refrigerant into the high-pressure chamber; and a motor component, the motor component including a motor body and a drive shaft, the motor body driving the compression component to perform compression work via the drive shaft. By providing the high-pressure housing assembly of the first aspect of the present invention, exhaust noise and pressure pulsation can be improved in the electric compressor according to the present invention.

[0031] An air conditioning system according to a third aspect embodiment of the present invention includes an electric compressor according to a second aspect embodiment of the present invention. By incorporating the electric compressor described in the second aspect embodiment, the air conditioning system's noise and pressure pulsation are improved.

[0032] A vehicle according to a fourth aspect embodiment of the present invention includes a vehicle body and an air conditioning system mounted on the vehicle body, wherein the air conditioning system is an air conditioning system according to a third aspect embodiment of the present invention. The vehicle according to the present invention, by providing the air conditioning system of the third aspect embodiment described above, improves the vibration and noise problems of the vehicle.

[0033] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] Figure 1 This is a cross-sectional view of an electric compressor according to Embodiment 1 of the present invention;

[0035] Figure 2 This is a cross-sectional view of an electric compressor according to Embodiment 2 of the present invention;

[0036] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0037] Figure 4 This is a cross-sectional view of an electric compressor according to Embodiment 3 of the present invention;

[0038] Figure 5 yes Figure 4 A magnified view of a portion of the image;

[0039] Figure 6 This is a cross-sectional view of an electric compressor according to Embodiment 4 of the present invention;

[0040] Figure 7 This is a cross-sectional view of an electric compressor according to Embodiment 5 of the present invention;

[0041] Figure 8 This is a cross-sectional view of an electric compressor according to Embodiment Six of the present invention;

[0042] Figure 9 This is a schematic diagram of a vehicle according to an embodiment of the present invention.

[0043] Figure label:

[0044] 100 electric compressors;

[0045] Housing component 10;

[0046] High-voltage housing assembly 101;

[0047] High-pressure casing 1;

[0048] High-pressure chamber 11; Second opening 111; Refrigerant outlet 12;

[0049] Resonance cavity 13; First opening 131; First aperture segment 132; Second aperture segment 133;

[0050] Connecting channel 14; Direct connecting channel 14a; Indirect connecting channel 14b;

[0051] First channel 141; First connecting port 1411; Second connecting port 1412;

[0052] Second channel 142; Third connecting port 1421; Fourth connecting port 1422; Fifth connecting port 1423;

[0053] Oil separator chamber 15; oil separator inlet 151;

[0054] Shell end face 16; oil return channel 17;

[0055] End cap 2; oil separator component 3; oil separator insert 31; first pipe section 311; second pipe section 312;

[0056] Pressure protection device 4;

[0057] Low-pressure housing 102; refrigerant inlet 1021; partition 103; cover plate 104; low-pressure chamber 105;

[0058] Compression component 20; stationary scroll plate 201; exhaust port 2011; moving scroll plate 202;

[0059] Motor component 30; Motor body 301; Rotor 3011; Stator 3012; Drive shaft 302;

[0060] 40 electronic control components;

[0061] Vehicle body 200; air conditioning system 300; vehicle 1000. Detailed Implementation

[0062] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0063] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0064] Hereinafter, with reference to the accompanying drawings, a high-pressure housing assembly 101 for an electric compressor 100 according to a first aspect embodiment of the present invention will be described.

[0065] like Figure 1 As shown, the high-pressure housing assembly 101 includes a high-pressure housing 1, on which a high-pressure chamber 11 and a refrigerant outlet 12 are formed. The compression component 20 of the electric compressor 100 is adapted to discharge compressed refrigerant into the high-pressure chamber 11, and the high-pressure chamber 11 is adapted to discharge refrigerant to the outside of the high-pressure housing 1 through the refrigerant outlet 12. Thus, when the electric compressor 100 is powered on and operating normally, it can draw in low-pressure refrigerant, which is then compressed by the compression component 20 to form high-pressure refrigerant. This high-pressure refrigerant is discharged into the high-pressure chamber 11 through the exhaust port 2011 of the compression component 20, and finally discharged to the outside of the high-pressure housing 1 through the refrigerant outlet 12.

[0066] like Figure 1As shown, the internal space of the high-pressure housing 1 includes the high-pressure chamber 11, and the refrigerant flow space between the high-pressure chamber 11 and the refrigerant outlet 12 constitutes the exhaust path S. For example, when the high-pressure chamber 11 is directly connected to the refrigerant outlet 12, the high-pressure chamber 11 itself constitutes the exhaust path S. As another example, when the high-pressure chamber 11 is indirectly connected to the refrigerant outlet 12 through the oil separator chamber 15 (described later), the high-pressure chamber 11 and the oil separator chamber 15 together constitute the exhaust path S. Of course, the invention is not limited to this. For example, in other embodiments, the high-pressure chamber 11 can also be indirectly connected to the refrigerant outlet 12 through the oil separator chamber 15 and other chambers. In this case, the high-pressure chamber 11, the oil separator chamber 15, and other chambers together constitute the exhaust path S. Further details are omitted here.

[0067] like Figure 1 As shown, a resonant cavity 13 and a connecting channel 14 are also formed on the high-pressure housing 1. The resonant cavity 13 is connected to the exhaust path S through the connecting channel 14. A first opening 131 formed by machining the resonant cavity 13 is formed on the surface of the high-pressure housing 1. The high-pressure housing assembly 101 includes an end cap 2 covering the first opening 131. Thus, a cavity structure that satisfies the Helmholtz resonance principle can be formed, thereby improving the airflow noise and pulsation in the high-pressure housing 1 on the exhaust side of the electric compressor 100.

[0068] For example, electric compressors can be core components of vehicle refrigeration equipment. The operation of an electric compressor generates vibration and noise, affecting vehicle noise and creating subjective auditory problems. In related technologies, the high-pressure refrigerant discharged from the compression component of the electric compressor enters the high-pressure chamber and then leaves the compressor directly through the refrigerant outlet. The exhaust gas noise and pressure pulsations generated during the operation of the electric compressor can easily trigger resonance in various components of the vehicle's thermal management system, leading to vehicle noise and vibration problems.

[0069] According to an embodiment of the present invention, the high-pressure housing assembly 101 for the electric compressor 100, by providing a resonant cavity 13 and a connecting channel 14 on the high-pressure housing 1 and by cooperating with the end cap 2, forms a cavity structure that satisfies the Helmholtz resonance principle, thereby improving the airflow noise and pulsation on the exhaust side of the electric compressor 100, and further improving the noise and pulsation of the refrigerant discharged by the electric compressor 100. When the electric compressor 100 is used in a vehicle 1000, it can improve the resonance problem of various components in the thermal management system of the vehicle 1000 caused by the exhaust airflow noise and pressure pulsation of the electric compressor 100, and improve the noise and vibration caused to the vehicle 1000.

[0070] It should be noted that the "Helmholtz resonance principle" is well known to those skilled in the art. Based on the proposal in this application that "a resonance cavity 13 and a connecting channel 14 can be set on the high-pressure shell 1, and a cavity structure that satisfies the Helmholtz resonance principle can be formed by cooperating with the end cap 2", those skilled in the art can match and calculate the specific dimensions that the resonance cavity 13 and the connecting channel 14 need to meet according to the specific requirements of different working conditions. Therefore, this application does not limit the specific dimensions.

[0071] Furthermore, according to the high-pressure housing assembly 101 of the present invention, since the resonant cavity 13 and the connecting channel 14 are both formed on the high-pressure housing 1, there is no need to add a noise reduction accessory with a noise reduction hole and a noise reduction cavity to the high-pressure housing 1, which saves the investment cost of the noise reduction accessory, eliminates the installation process of assembling the noise reduction accessory to the high-pressure housing 1, improves production efficiency, and avoids the adverse effects on the noise reduction effect caused by unstable installation of the noise reduction accessory and vibration.

[0072] Furthermore, since the formation of the resonant cavity 13 will form a first opening 131 on the surface of the high-pressure housing 1, and the end cap 2 will cover the first opening 131, the resonant cavity 13 is easy to process. For example, the resonant cavity 13 can be processed by drilling or casting, which reduces the processing difficulty and processing cost of the high-pressure housing 1 and is conducive to mass production and practical application.

[0073] Furthermore, the sealing of the first opening 131 formed by processing the resonant cavity 13 does not rely on other components of the electric compressor 100, such as the compression component 20, thus giving the resonant cavity 13 the advantage of flexible placement, which can meet the noise reduction requirements of different models. Moreover, in some embodiments, the design of the position of the resonant cavity 13 can avoid the resonant cavity 13 occupying the space in the high-pressure chamber 11, ensuring that the resonant cavity 13 and the high-pressure chamber 11 each have sufficient volume.

[0074] Of course, the present invention is not limited thereto. When there is enough space in the high-pressure cavity 11, in some embodiments, at least a portion of the resonant cavity 13 may also be disposed in the high-pressure cavity 11. This is not a limitation.

[0075] In some embodiments of the present invention, such as Figure 1 As shown, the resonant cavity 13 is orifice-shaped, and the first opening 131 is formed at least one side of the orifice of the resonant cavity 13 (it can be understood that the orifice has two sides, both sides of the orifice of the through hole are open, while one side of the orifice of the blind hole is open). The flow area of ​​the connecting channel 14 is smaller than the flow area of ​​the resonant cavity 13.

[0076] It should be noted that in order to form a cavity with a certain volume, the "resonance cavity 13 is hole-shaped" means that it is a three-dimensional hole shape with a certain depth, rather than a planar hole shape. The two ends of the center line of the hole are the two ends of the resonance cavity 13, so at least one end of the resonance cavity 13 at the two ends of the center line of the hole is the first opening 131.

[0077] Therefore, the orifice-shaped resonant cavity 13 has a simple structure and is easy to manufacture. It can be manufactured by various methods such as drilling or casting. Its placement is flexible and meets the design requirements of different models. It also occupies less space, reducing the overall volume and saving space in the vehicle while meeting noise reduction requirements. Moreover, the flow area of ​​the orifice-shaped resonant cavity 13 is easy to design and manufacture, ensuring that the flow area of ​​the connecting channel 14 is smaller than the flow area of ​​the resonant cavity 13. This reliably satisfies the requirement of forming a cavity structure based on the Helmholtz resonance principle.

[0078] In some optional examples, such as Figure 1 As shown, the resonant cavity 13 is blind-shaped, with a first opening 131 formed at the open-side end of the resonant cavity 13, which is covered by the end cap 2. The other end of the resonant cavity 13 is a closed-side end (or simply a closed end) to have a solid structure with the surface of the high-pressure housing 1 (or, in other words, no opening is formed on the surface of the high-pressure housing 1). Of course, the present invention is not limited to this. For example, in some alternative examples, the resonant cavity 13 can also be a through-hole shape (this example is not shown in the figure), with the first opening 131 formed at both ends of the resonant cavity 13, and both ends covered by the end caps 2 on the corresponding sides. Among these, the blind-hole resonant cavity 13 can save the number of end caps 2 used compared to the through-hole resonant cavity 13, save the installation time of one side of the end cap 2, improve production efficiency, and improve the structural strength of the high-pressure housing 1. However, to meet other requirements, the resonant cavity 13 can also be processed into a through-hole shape, which is not limited here.

[0079] In some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, when the resonant cavity 13 is in the shape of a blind hole, the connecting channel 14 may include a first channel 141. One end of the first channel 141 is constructed as a first connecting port 1411 formed on the closed side hole end of the resonant cavity 13, thereby enabling communication between the first channel 141 and the resonant cavity 13 through the first connecting port 1411. Therefore, the first channel 141 is easy to process. For example, after processing the blind hole of the resonant cavity 13 using a drilling process, a relatively small hole can be drilled further to obtain the first channel 141. Of course, the present invention is not limited to this; the resonant cavity 13 and the first channel 141 can also be obtained by casting or other methods.

[0080] Optionally, such as Figure 2 and Figure 3 As shown, the centerline of the first channel 141 is located on the extension line of the centerline of the resonant cavity 13. This design is simple and easy to manufacture, further simplifying the processing steps and improving production efficiency. For example, after drilling a blind hole in the resonant cavity 13, there is no need for repositioning; a relatively small hole can be drilled forward to obtain the first channel 141. Of course, the invention is not limited to this. For example, in other embodiments of the invention, the centerline of the first channel 141 can be set parallel to the centerline of the resonant cavity 13, etc., which will not be elaborated here.

[0081] In some embodiments, such as Figure 2 and Figure 3 As shown, an oil separator chamber 15 is also formed on the high-pressure housing 1. The high-pressure housing 11 exhausts gas to the refrigerant outlet 12 through the oil separator chamber 15. For example, the fifth connecting port 151 is connected to the high-pressure housing 11. The oil separator chamber 15 discharges refrigerant to the outside of the high-pressure housing 1 through the refrigerant outlet 12. In this way, when the electric compressor 100 is powered on and running normally, low-pressure refrigerant can be drawn in and compressed by the compression component 20 to form high-pressure refrigerant. The high-pressure refrigerant is discharged into the high-pressure housing 11 through the exhaust port 2011 of the compression component 20, and then enters the oil separator chamber 15 through the fifth connecting port 151 to achieve gas-liquid separation. The separated gaseous refrigerant is discharged to the outside of the high-pressure housing 1 through the refrigerant outlet 12.

[0082] Optionally, such as Figure 2 and Figure 3 As shown, the high-pressure housing assembly 101 includes an oil separator 3 disposed in the oil separator chamber 15, which can improve the gas-liquid separation effect of the refrigerant. Of course, the present invention is not limited to this. The oil separator 3 may not be disposed in the oil separator chamber 15. In this case, for example, the fifth connecting port 151 can be set as a tangential air intake, thereby using the centrifugal force of the cyclone to perform gas-liquid separation.

[0083] When an oil separator 15 is also formed on the high-pressure housing 1, in some optional examples, for example Figure 2 and Figure 3 As shown, the centerline of the resonant cavity 13 extends towards the oil separator 15 along the direction from the open side to the closed side. The first channel 141 is located between the resonant cavity 13 and the oil separator 15, and the other end of the first channel 141 is constructed as a second connecting port 1412 formed on the cavity wall of the oil separator 15, thereby enabling communication between the first channel 141 and the oil separator 15 through the second connecting port 1412. Therefore, the structure is compact, allowing for miniaturized design of the high-pressure housing 1 and minimizing its footprint within the vehicle.

[0084] Optionally, such as Figure 2 and Figure 3As shown, the oil separation chamber 15 is also orifice-shaped. The center line of the resonant chamber 13 extends along the direction from the open side to the closed side toward the peripheral wall of the oil separation chamber 15. The center line of the resonant chamber 13 intersects the center line of the oil separation chamber 15 at an acute angle. The second connecting port 1412 can be formed on the peripheral wall of the oil separation chamber 15. This can improve the space utilization rate and ensure that the volume of both the resonant chamber 13 and the oil separation chamber 15 is large.

[0085] In some embodiments of the present invention, such as Figure 4 and Figure 5 As shown, when the resonant cavity 13 is hole-shaped, the connecting channel 14 may include a second channel 142. One end of the second channel 142 is constructed as a third connecting port 1421 formed on the peripheral wall of the hole in the resonant cavity 13, thereby enabling communication between the second channel 142 and the resonant cavity 13 through the third connecting port 1421. Therefore, the second channel 142 is easy to process; for example, it can be machined using a drilling process along the radial direction of the resonant cavity 13 or in a direction intersecting the radial direction at an acute angle. Of course, the invention is not limited to this; the resonant cavity 13 and the second channel 142 can also be obtained by casting or other methods.

[0086] In some optional examples, such as Figure 1 As shown, the high-pressure housing 1 has a shell end face 16, on which a second opening 111 is formed by machining the high-pressure cavity 11. The high-pressure cavity 11 can be machined through this second opening 111. The resonant cavity 13 is located on the side of the high-pressure cavity 11 away from the shell end face 16. The other end of the second channel 142 is constructed as a fourth connecting port 1422 formed on the cavity wall of the high-pressure cavity 11, allowing communication between the second channel 142 and the high-pressure cavity 11. Therefore, machining the second channel 142 is convenient. For example, a drilling process can be used to insert a drilling tool into the high-pressure cavity 11 from the second opening 111 and drill a hole from the cavity wall of the high-pressure cavity 11 towards the resonant cavity 13 to obtain the second channel 142. Of course, the invention is not limited to this; the second channel 142 can also be obtained by casting or other methods.

[0087] Of course, the present invention is not limited thereto; for example, in some other alternative examples of the present invention, such as... Figure 4 and Figure 5As shown, the high-pressure housing 1 has a shell end face 16, on which a second opening 111 is formed by machining the high-pressure chamber 11. The high-pressure chamber 11 can be machined through this second opening 111. An oil separator 15 is also formed on the high-pressure housing 1, through which the high-pressure chamber 11 exhausts refrigerant to the refrigerant outlet 12. For example, the fifth connecting port 151 connects to the high-pressure chamber 11, and the oil separator 15 discharges refrigerant to the outside of the high-pressure housing 1 through the refrigerant outlet 12. Thus, when the electric compressor 100 is powered on and operating normally, low-pressure refrigerant can be drawn in and compressed by the compression component 20 to form high-pressure refrigerant. This high-pressure refrigerant is discharged into the high-pressure chamber 11 through the exhaust port 2011 of the compression component 20, and then enters the oil separator 15 through the fifth connecting port 151 to achieve gas-liquid separation. The separated gaseous refrigerant is discharged to the outside of the high-pressure housing 1 through the refrigerant outlet 12. In addition, in this embodiment, the high-pressure housing assembly 101 may also include an oil separator 3 disposed in the oil separator chamber 15. The oil separator 3 can be referred to the above description and will not be repeated here.

[0088] When the shell end face 16 has a second opening 111 formed by machining the high-pressure chamber 11, and the high-pressure shell 1 also has an oil separator chamber 15, optionally, as follows: Figure 4 and Figure 5 As shown, the other end of the second channel 142 can be constructed as a fifth connecting port 1423 formed on the cavity wall of the oil separator 15, thereby enabling the second channel 142 to connect with the oil separator 15 through the fifth connecting port 1423. This allows for flexible indirect connection between the second channel 142 and the high-pressure cavity 11, facilitating flexible structural design.

[0089] For example, in some optional examples, such as Figure 4 and Figure 5 As shown, the resonant cavity 13 and the high-pressure cavity 11 are located on both sides of the oil separator 15. The high-pressure housing 1 also has an oil return channel 17 connecting the oil separator 15 and the housing end face 16. The centerline of the second channel 142 is located on the extension line of the centerline of the oil return channel 17. Thus, the arrangement of the resonant cavity 13, the high-pressure cavity 11, and the oil separator 15 is indirect, does not interfere with each other, and does not occupy each other's space, and facilitates the processing of the oil return channel 17 and the second channel 142. For example, starting from the housing end face 16, towards the oil separator 15 and the resonant cavity 13, the oil return channel 17 can be opened first, and then the second channel 142 can be opened forward, resulting in high processing efficiency and good feasibility.

[0090] Optionally, when the resonant cavity 13 is a hole-shaped structure with a straight centerline, an orthographic projection is made onto a plane perpendicular to the centerline of the resonant cavity 13. The projection of the resonant cavity 13 is completely located within the first opening 131, which is beneficial for the forming and processing of the resonant cavity 13. For example, the resonant cavity 13 can be processed by drilling.

[0091] Optionally, an orthographic projection is made onto a plane perpendicular to the central axis of the electric compressor 100, and the projection of the high-pressure chamber 11 is completely located within the second opening 111, which is beneficial for the forming and processing of the high-pressure chamber 11. For example, the high-pressure chamber 11 can be processed by casting.

[0092] It should be noted that when the resonant cavity 13 is aperture-shaped, it can be an aperture with a constant cross-section (e.g., Figure 4 and Figure 5 As shown), it can also be a variable cross-section hole (e.g. Figure 6 (As shown). When the oil separator 15 is orifice-shaped, it can be a constant cross-section orifice or a variable cross-section orifice. The connecting channel 14 can be orifice-shaped and can be processed into a constant cross-section or variable cross-section channel as needed. In addition, it should be noted that variable cross-section includes at least one of shape change and size change.

[0093] It should be noted that the number of connecting channels 14 is not limited, and there can be one or more. For example, connecting channel 14 may include only at least one first channel 141, or connecting channel 14 may include only at least one second channel 142, or connecting channel 14 may include both at least one first channel 141 and at least one second channel 142, and so on.

[0094] In some embodiments of the present invention, such as Figure 3 and Figure 5 As shown, at least one connecting channel 14 and the resonant cavity 13 satisfy the following relationship: h is less than or equal to 0.3 times H, i.e., h ≤ 0.3H, where h is the distance in the direction of gravity G between the highest point of the connecting channel 14 and the resonant cavity 13 at the junction with the resonant cavity 13 and the lowest point of the resonant cavity 13 in the direction of gravity G, and H is the distance in the direction of gravity G between the highest point of the resonant cavity 13 and the lowest point of the resonant cavity 13 in the direction of gravity G. Therefore, when oil accumulates in the resonant cavity 13, an oil return effect can be achieved through the connecting channel 14 satisfying the above relationship, improving the problem of oil accumulation occupying volume in the resonant cavity 13 and affecting the noise reduction effect.

[0095] In some embodiments of the present invention, such as Figure 7As shown, the high-pressure housing assembly 101 may further include a pressure protection device 4, which is disposed on the end cap 2. In short, the end cap 2 may be provided with a pressure protection device 4. Thus, since the resonant cavity 13 is directly or indirectly connected to the high-pressure cavity 11, when the internal pressure of the high-pressure housing 1 exceeds the preset threshold of the pressure protection device 4, the pressure protection device 4 will activate the pressure relief function to discharge the gas inside the high-pressure housing 1. Moreover, in the embodiments of the present invention, by placing the pressure protection device 4 on the end cap 2 used to seal the first opening 131, the need to additionally machine a through hole for installing the pressure protection device 4 on the high-pressure housing 1 is eliminated, thereby simplifying the structure, processing, and assembly of the high-pressure housing 1.

[0096] It should be noted that the pressure protection device 4 can be a safety valve, pressure relief valve, etc., the structure and working principle of which are well known to those skilled in the art and will not be described in detail here. Furthermore, it is understood that the connection method between the pressure protection device 4 and the end cap 2 is not limited. For example, it can be a non-detachable integrated structure or a detachable combined structure, etc. When non-detachable, the sealing effect at the pressure protection device 4 can be ensured, improving the reliability and effectiveness of the pressure protection device 4. When detachable, the pressure protection device 4 can be disassembled, repaired, and replaced, etc.

[0097] Furthermore, it is worth noting that the connection method between the end cap 2 and the first opening 131 is not limited. It can be specifically designed according to the structural shape of the first opening 131 and the shape of the end cap 2. For example, the end cap 2 can be assembled by means of threaded connection or welding. For example, in some embodiments, when the resonant cavity 13 is hole-shaped and the first opening 131 is located at the hole end of the resonant cavity 13, an internal thread can be provided at the hole end of the resonant cavity 13, and an external thread can be provided on the end cap 2. The connection can be achieved by directly screwing the end cap 2 into the hole end. The connection is convenient, and compared with the connection of screws, it can reduce the process complexity and avoid considering the sealing problem at the screw.

[0098] In some embodiments of the present invention, such as Figure 1 As shown, the high-pressure housing 1 has a housing end face 16, on which a second opening 111 is formed by machining the high-pressure cavity 11. This second opening 111 allows the high-pressure cavity 11 to be machined. The resonant cavity 13 is located on the side of the high-pressure cavity 11 away from the housing end face 16. Therefore, the resonant cavity 13 does not occupy space within the high-pressure cavity 11, ensuring that the volume of the resonant cavity 13 is not sacrificed in consideration of the volume of the high-pressure cavity 11, thus guaranteeing a noise reduction effect. Furthermore, the arrangement of the resonant cavity 13 does not affect the installation of the compression component 20, etc.

[0099] In some embodiments of the present invention, such as Figure 1As shown, the connecting channel 14 includes at least one direct connecting channel 14a, which penetrates the cavity wall of the high-pressure cavity 11 to connect the high-pressure cavity 11 and the resonant cavity 13. Therefore, the direct connecting channel 14a is easy to process and readily available for manufacturing. For example, the second channel 142 described above, which connects the high-pressure cavity 11 and the resonant cavity 13 and has a fourth connecting port 1422, can be a direct connecting channel 14a in a specific embodiment.

[0100] In some embodiments of the present invention, an oil separator chamber 15 is also formed on the high-pressure housing 1. The high-pressure housing 11 exhausts refrigerant through the oil separator chamber 15 to the refrigerant outlet 12. The high-pressure housing assembly 101 also includes an oil separator 3 disposed in the oil separator chamber 15. For example, the fifth connecting port 151 is connected to the high-pressure housing 11. The oil separator chamber 15 discharges refrigerant to the outside of the high-pressure housing 1 through the refrigerant outlet 12. Thus, when the electric compressor 100 is powered on and running normally, low-pressure refrigerant can be drawn in and compressed by the compression component 20 to form high-pressure refrigerant. This high-pressure refrigerant is discharged into the high-pressure housing 11 through the exhaust port 2011 of the compression component 20, and then enters the oil separator chamber 15 through the fifth connecting port 151. The oil separator 3 achieves relatively effective gas-liquid separation, and the separated gaseous refrigerant is discharged to the outside of the high-pressure housing 1 through the refrigerant outlet 12.

[0101] In this embodiment, the connecting channel 14 is directly connected to at least one of the high-pressure chamber 11 and the oil separator 15. It should be noted that the number of connecting channels 14 is not limited, and there can be one or more.

[0102] For example, in some embodiments, such as Figure 1 As shown, at least one connecting channel 14 is a direct connection channel 14a. The resonant cavity 13 can be connected to the high-pressure cavity 11 through at least one direct connection channel 14a, thereby at least a portion of the noise in the refrigerant entering the high-pressure cavity 11 can be weakened or eliminated by entering the resonant cavity 13 through the direct connection channel 14a. For example, the direct connection channel 14a may have a first port and a second port. The first port is formed on the cavity wall of the high-pressure cavity 11 to communicate with the high-pressure cavity 11, and the second port is formed on the cavity wall of the resonant cavity 13 to communicate with the resonant cavity 13, thereby connecting the high-pressure cavity 11 and the resonant cavity 13 through the direct connection channel 14a.

[0103] For example, in some embodiments, such as Figure 2As shown, at least one connecting channel 14 is an indirect connecting channel 14b. The resonant cavity 13 can also be connected to the oil separator 15 only through at least one indirect connecting channel 14b. Thus, at least a portion of the noise in the refrigerant entering the oil separator 15 can be weakened or eliminated by entering the resonant cavity 13 through the indirect connecting channel 14b. For example, the indirect connecting channel 14b can have a third port and a fourth port. The third port is formed on the cavity wall of the oil separator 15 to communicate with the oil separator 15, and the fourth port is formed on the cavity wall of the resonant cavity 13 to communicate with the resonant cavity 13. Thus, the oil separator 15 and the resonant cavity 13 can be connected through the indirect connecting channel 14b.

[0104] For example, in some embodiments, there are multiple connecting channels 14, with at least one connecting channel 14 being a direct connection channel 14a and at least one connecting channel 14 being an indirect connection channel 14b. The resonant cavity 13 can then be connected to the high-pressure cavity 11 via at least one direct connection channel 14a, and to the oil separator cavity 15 via at least one indirect connection channel 14b. This allows at least a portion of the noise in the refrigerant entering the high-pressure cavity 11 and at least a portion of the noise in the refrigerant entering the oil separator cavity 15 to be weakened or eliminated by entering the resonant cavity 13 through the connecting channels 14. This allows for flexible design.

[0105] In some embodiments of the present invention, the high-pressure housing 1 has a shell end face 16, on which a second opening 111 is formed by machining the high-pressure chamber 11. The high-pressure chamber 11 can be machined through this second opening 111. An oil separator 15 is also formed on the high-pressure housing 1. The outlet of the oil separator 15 penetrates the high-pressure housing 1 to form a refrigerant discharge outlet 12, thereby enabling direct exhaust from the oil separator 15 to the refrigerant discharge outlet 12, shortening the exhaust path. For example, Figure 1 As shown, the resonant cavity 13 and the oil separation cavity 15 can both be located on the side of the high-pressure cavity 11 away from the shell end face 16. Therefore, neither the resonant cavity 13 nor the oil separation cavity 15 occupies space within the high-pressure cavity 11. This ensures that the volume of the resonant cavity 13 and the oil separation cavity 15 is not sacrificed due to the volume of the high-pressure cavity 11, guaranteeing both noise reduction and oil separation effects.

[0106] In some embodiments of the present invention, such as Figure 1 As shown, the connecting channel 14 includes at least one direct connecting channel 14a, which penetrates the cavity wall of the high-pressure cavity 11 to connect the high-pressure cavity 11 and the resonant cavity 13. Therefore, the direct connecting channel 14a is easy to process and readily available for manufacturing. For example, the second channel 142 described above, which connects the high-pressure cavity 11 and the resonant cavity 13 and has a fourth connecting port 1422, can be a direct connecting channel 14a in a specific embodiment.

[0107] In some embodiments of the present invention, such as Figure 2As shown, the high-pressure housing 1 also has an oil return channel 17 connecting the oil separator 15 and the housing end face 16. The connecting channel 17 includes at least one indirect channel 14b. The resonant cavity 13 and the high-pressure cavity 11 are located on both sides of the oil separator 15. The centerline of the indirect channel 14b is located on the extension line of the centerline of the oil return channel 17 and penetrates the cavity wall of the oil separator 15, so as to indirectly connect the oil separator 15 and the resonant cavity 13. Therefore, the indirect channel 14b is easy to process and easy to produce embodiments. For example, the second channel 142 described above, which connects the oil separator 15 and the resonant cavity 13 and has a fifth connecting port 1423, can be the indirect channel 14b of a specific embodiment, and the first channel 141 described above, which connects the oil separator 15 and the resonant cavity 13, can be the indirect channel 14b of another specific embodiment.

[0108] For example in Figure 2 and Figure 3 In the example shown, the resonant cavity 13 is in the shape of a blind hole and extends toward the oil separator 15 along the direction from the open side end of the resonant cavity 13 to the closed side end. The connecting channel 14b includes a first channel 141 that connects the oil separator 15 and the resonant cavity 13. The first channel 141 continues to extend toward the oil separator 15 along the extension direction of the resonant cavity 13 to connect the closed side end of the resonant cavity 13 and the peripheral wall of the oil separator 15.

[0109] For example in Figure 4 and Figure 5 In the example shown, the resonant cavity 13 is located on the side of the oil separator 15 away from the high-pressure cavity 11. The connecting channel 14b includes a second channel 142 with a fifth connecting port 1423. A hole is drilled from the shell end face 16 to the resonant cavity 13 to sequentially obtain the oil outlet port of the oil return channel 17 formed on the shell end face 16, the oil inlet port of the oil return channel 17 formed on the cavity wall of the oil separator 15, the fifth connecting port 1423 of the second channel 142 formed on the cavity wall of the oil separator 15, and the third connecting port 1421 formed on the hole peripheral wall of the resonant cavity 13.

[0110] For example, in some alternative examples, the oil separator 15 is orifice-shaped, and the centerline of the resonant cavity 13 and the centerline of the oil separator 15 can be located on the same cross-section of the electric compressor 100 (i.e., a cross-section through a plane perpendicular to the central axis of the electric compressor 100) or on the same longitudinal cross-section of the electric compressor 100 (i.e., a cross-section through a plane passing through the central axis of the electric compressor 100). This facilitates processing and positioning.

[0111] Optionally, such as Figure 2 and Figure 3As shown, any one of the center lines of the resonant cavity 13, the oil separator 15, the first channel 141, the second channel 142, and the return oil channel 17 can extend along a straight line, thereby simplifying the structure and facilitating design and manufacturing. For example, it can be machined by drilling. Of course, it is understood that regardless of whether the center line is straight or curved, it can be machined by casting, which will not be elaborated here. In addition, the cross-sectional shape of any one of the resonant cavity 13, the oil separator 15, the first channel 141, the second channel 142, and the return oil channel 17 is not limited. When it is a hole-shaped structure, the cross-sectional shape can be circular, elliptical, oblong, polygonal, irregular, etc.

[0112] It should be noted that the specific composition of the oil separator 3 is not limited, and may include, for example, an oil separator tube 31, an oil separator filter, etc. For example, in some embodiments, the oil separator tube 31 includes a first tube segment 311 and a second tube segment 312. The outer peripheral wall of the first tube segment 311 is sealed to the oil separator cavity 15, and there is a gap between the outer peripheral wall of the second tube segment 312 and the oil separator cavity 15 to form a cyclone separation space surrounding the second tube segment 312. The fifth connecting port 151 is provided corresponding to the cyclone separation space, and allows the refrigerant to enter the cyclone separation space tangentially. Thus, gas-liquid separation can be achieved simply and effectively.

[0113] Optionally, such as Figure 1 As shown, the shell end face 16 in any of the above embodiments can be one side surface of the high-pressure shell 1 along the axial direction of the electric compressor 100, so that the axial side of the high-pressure shell 1 can have a second opening 111 that opens toward the compression component 20. In this case, "the resonant cavity 13 and the oil separator 15 are both located on the side of the high-pressure cavity 11 away from the shell end face 16" means that along the axial direction of the electric compressor 100, the resonant cavity 13 and the oil separator 15 are both located on the side of the high-pressure cavity 11 away from the shell end face 16. "The resonant cavity 13 is located on the side of the high-pressure cavity 11 away from the shell end face 16" means that along the axial direction of the electric compressor 100, the resonant cavity 13 is located on the side of the high-pressure cavity 11 away from the shell end face 16. "The resonant cavity 13 and the high-pressure cavity 11 are located on both sides of the oil separator 15" means that along the axial direction of the electric compressor 100, the resonant cavity 13 is located on the side of the oil separator 15 away from the high-pressure cavity 11.

[0114] Hereinafter, with reference to the accompanying drawings, an electric compressor 100 according to a second aspect embodiment of the present invention will be described.

[0115] like Figure 1As shown, the electric compressor 100 may include a housing component 10, a compression component 20, and a motor component 30. The housing component 10 includes a high-pressure housing assembly 101 for the electric compressor 100 according to any embodiment of the first aspect described above. The exhaust port 2011 of the compression component 20 is connected to the high-pressure chamber 11 to discharge compressed refrigerant into the high-pressure chamber 11. The motor component 30 includes a motor body 301 and a drive shaft 302. The motor body 301 drives the compression component 20 to perform compression work through the drive shaft 302. Therefore, by providing the high-pressure housing assembly 101, the exhaust airflow noise and pressure pulsation generated during the operation of the electric compressor 100 can be effectively improved.

[0116] It should be noted that the specific type of electric compressor 100 is not limited. For example, it can be a horizontal compressor with its central axis extending laterally or slightly inclined to the horizontal line, or a vertical compressor with its central axis extending vertically or slightly inclined to the vertical line, etc.

[0117] It is worth noting that the specific type of electric compressor 100 is not limited. For example, it can be a rotary compressor or a scroll compressor, etc. When the electric compressor 100 is a rotary compressor (this example is not shown in the figure), the compression component 20 can include a cylinder, piston, vanes, etc., and the drive shaft 302 drives the piston to roll in the cylinder. When the electric compressor 100 is a scroll compressor (e.g. Figure 1 (As shown in the example), the compression component 20 may include a stationary scroll 201, a moving scroll 202, and a drive shaft 302 that drives the moving scroll 202 to rotate, etc.

[0118] It should be noted that the relative positional relationship between the high-pressure housing 1 and the compression component 20 is not limited. For example, the compression component 20 can be located completely outside the high-pressure housing 1, or the compression component 20 can be located at least partially outside the high-pressure housing 1, etc., so as to meet the different design requirements of different models.

[0119] In some embodiments, such as Figure 1 As shown, the housing component 10 also includes: a middle partition 103 and a low-pressure housing 102. The compression component 20 and the motor body 301 are respectively placed on both sides of the middle partition 103. The drive shaft 302 passes through the middle partition 103 to connect with the compression component 20. A low-pressure cavity 105 is formed between the low-pressure housing 102 and the middle partition 103 to accommodate the motor body 301. A refrigerant suction port 1021 communicating with the low-pressure cavity 105 is formed on the low-pressure housing 102. The compression component 20 draws in refrigerant from the low-pressure cavity 105.

[0120] Therefore, the electric compressor 100 can be a low back pressure compressor. This type of compressor is beneficial for the application of new energy vehicles 1000 such as pure electric vehicles and hybrid vehicles. When used in these vehicles 1000, it can improve the exhaust airflow noise and pressure pulsation caused by the electric compressor 100, improve the resonance problem of the vehicle 1000's thermal management system, and improve the noise and vibration caused to the vehicle 1000.

[0121] In some embodiments, such as Figure 1 As shown, the partition 103 is sandwiched between the low-pressure housing 102 and the compression component 20, while the high-pressure housing 1 is located on the side of the compression component 20 opposite to the partition 103. This simplifies the structure, simplifies assembly, reduces size, improves production efficiency, and enhances connection reliability. For example, this structure can be applied to scroll compressors, but the structure of scroll compressors is not limited to this.

[0122] Furthermore, such as Figure 1 As shown, the high-pressure housing 1 has a housing end face 16, and a second opening 111 formed by machining the high-pressure chamber 11 on the housing end face 16. The second opening 111 is disposed facing the compression component 20. The compression component 20 covers the second opening 111 and is sealed with the housing end face 16. The exhaust port 2011 of the compression component 20 is open towards the high-pressure chamber 11, thereby enabling communication between the exhaust port 2011 and the high-pressure chamber 11.

[0123] In some embodiments, such as Figure 8 As shown, a partition 103 is sandwiched between the low-pressure housing 102 and the high-pressure housing 1, and a high-pressure chamber 11 is located between the partition 103 and the high-pressure housing 1. The compression component 20 is disposed within the high-pressure chamber 11. This simplifies the structure, simplifies assembly, improves production efficiency, and enhances connection reliability. For example, this structure can be applied to rotary compressors, but the structure of rotary compressors is not limited to this. Furthermore, this structure is also applicable to scroll compressors, but the structure of scroll compressors is not limited to this.

[0124] Hereinafter, with reference to the accompanying drawings, an air conditioning system 300 according to a third aspect embodiment of the present invention will be described.

[0125] like Figure 7 As shown, the air conditioning system 300 may include an electric compressor 100 according to any embodiment of the second aspect of the present invention. Since the exhaust noise and pulsation of the electric compressor 100 according to any embodiment of the second aspect of the present invention can be improved, when the electric compressor 100 is used in the air conditioning system 300, the pressure pulsation and noise problems caused to the air conditioning system 300 due to the exhaust airflow noise and pressure pulsation of the electric compressor 100 can be improved.

[0126] It should be noted that the specific application scenarios of the air conditioning system 300 according to the embodiments of the present invention are not limited, such as indoor air conditioning, indoor refrigerator, vehicle air conditioning, etc. Once the application scenario is determined, those skilled in the art can know other components of the air conditioning system 300. For example, when used for indoor air conditioning or indoor refrigerator, it may also include an evaporator, a condenser, a throttling element, etc. For example, when used for vehicle air conditioning, it may also include at least one of an in-vehicle condenser, an in-vehicle evaporator, an external condenser, an external evaporator, a throttling component, etc., which will not be elaborated here.

[0127] Hereinafter, a vehicle 1000 according to a fourth aspect embodiment of the present invention will be described with reference to the accompanying drawings.

[0128] like Figure 9 As shown, vehicle 1000 may include vehicle body 200 and air conditioning system 300 mounted on vehicle body 200. Air conditioning system 300 includes an air conditioning system 300 according to any embodiment of the third aspect of the present invention. Since the exhaust noise and pulsation of the electric compressor 100 included in the air conditioning system 300 according to any embodiment of the third aspect of the present invention can be improved, when the air conditioning system 300 is used in vehicle 1000, the resonance problem of various components in the thermal management system of vehicle 1000 caused by the exhaust airflow noise and pressure pulsation of electric compressor 100 can be improved, thereby reducing the noise and vibration caused to vehicle 1000. Optionally, electric compressor 100 is used to compress at least one refrigerant selected from R134a, R744, R290 and R1234yf, thereby meeting the requirements for vehicle use.

[0129] It should be noted that the specific type of vehicle 1000 according to the embodiments of the present invention is not limited. For example, it can be a new energy vehicle, which may include pure electric vehicles, hybrid vehicles, etc., which will not be elaborated here. In addition, once the type of vehicle 1000 is specifically determined, those skilled in the art will know the other components of vehicle 1000, which will not be elaborated here.

[0130] The electric compressor 100 for a vehicle 1000 according to some specific embodiments of the present invention will now be described.

[0131] Example 1

[0132] like Figure 1As shown, the electric compressor 100 includes a housing component 10, a motor component 30, a compression component 20, and an electrical control component 40. The housing component 10 includes a high-pressure housing 1, a low-pressure housing 102, a partition plate 103, and a cover plate 104. The motor component 30 includes a motor body 301 and a drive shaft 302. The motor body 301 includes a rotor 3011 and a stator 3012. The rotor 3011 is connected to the drive shaft 302. The compression component 20 includes a stationary scroll 201 and a moving scroll 202. The drive shaft 302 is connected to the moving scroll 202.

[0133] like Figure 1 As shown, the low-pressure housing 102 and the high-pressure housing 1 are located on opposite sides of the compression component 20. The high-pressure housing 1 has a high-pressure chamber 11, which is sandwiched between the high-pressure housing 1 and the stationary scroll 201 and communicates with the exhaust port 2011 on the stationary scroll 201. A partition plate 103 is sandwiched between the low-pressure housing 102 and the stationary scroll 201, forming a low-pressure chamber between the partition plate 103 and the low-pressure housing 102. A refrigerant suction port 1021 communicating with the low-pressure chamber is formed on the low-pressure housing 102. A cover plate 104 is located on the side of the low-pressure housing 102 away from the partition plate 103, forming a mounting cavity between the cover plate 104 and the low-pressure housing 102. The electrical control component 40 is disposed in the mounting cavity.

[0134] The refrigerant inlet 1021 is used to draw refrigerant from outside the electric compressor 100. The motor component 30 is used to generate torque. The compression component 20 and the motor body 301 are respectively placed on both sides of the partition 103. The drive shaft 302 passes through the partition 103 and is supported by the partition 103. Thus, the motor body 301 can transmit torque to the scroll 202 through the drive shaft 302, so that the compression component 20 can compress the drawn-in refrigerant.

[0135] The high-pressure housing 1 also has a refrigerant outlet 12 and an oil separator 15. The fifth connecting port 151 is connected to the high-pressure chamber 11 so that the high-pressure refrigerant can enter the oil separator 15 from the high-pressure chamber 11. The outlet of the oil separator 15 is shared with or connected to the refrigerant outlet 12. An oil separator tube 31 is provided inside the oil separator 15. The oil separator 15, the oil separator tube 31, and the fifth connecting port 151 together form a cyclone gas-liquid separator that separates the refrigeration oil in the high-pressure refrigerant. The centerline of the oil separator 15, the centerline of the resonant chamber 13, and the centerline of the drive shaft 302 are coplanar so that the centerline of the resonant chamber 13 and the centerline of the oil separator 15 are located on the same longitudinal section of the electric compressor 100. The resonant chamber 13 and the high-pressure chamber 11 are located on opposite sides of the oil separator 15.

[0136] When the electric compressor 100 is running normally, the rotor 3011 drives the drive shaft 302 to rotate, and the drive shaft 302 drives the rotating scroll 202 to rotate. The gaseous refrigerant enters the low-pressure chamber from the refrigerant inlet 1021 and flows through the motor component 30 and the middle partition 103 into the compression component 20 to be compressed. The high-pressure gas formed after the refrigerant is compressed by the compression component 20 is discharged into the high-pressure chamber 11 sandwiched between the high-pressure housing 1 and the stationary scroll 201. Then, it enters the cyclone gas-liquid separator through the fifth connecting port 151. After being separated into gas and liquid, it leaves the electric compressor 100 through the refrigerant outlet 12.

[0137] A resonant cavity 13 and a connecting channel 14 are provided on the high-pressure housing 1. The resonant cavity 13 is connected to the high-pressure cavity 11 through the connecting channel 14 to form a cavity structure that satisfies the Helmholtz resonance principle, thereby improving the airflow noise and pulsation in the high-pressure cavity 11 on the exhaust side of the electric compressor 100, and further improving the noise and pulsation of the refrigerant flowing out through the refrigerant exhaust port 2011.

[0138] like Figure 1 As shown, the resonant cavity 13 can be a blind hole structure machined on the high-pressure housing 1. The cross-section of the resonant cavity 13 can be circular and of uniform diameter. The end cap 2 is fixed to the open side hole end of the resonant cavity 13 by threaded connection to cover the open side hole end of the resonant cavity 13. A direct connection channel 14a communicating with the high-pressure cavity 11 is provided on the peripheral wall side of the resonant cavity 13. The cross-sectional area of ​​the direct connection channel 14a is smaller than the cross-sectional area of ​​the resonant cavity 13. The spatial position between the direct connection channel 14a and the resonant cavity 13 satisfies: h ≤ 0.3H, where h is the distance in the direction of gravity G between the highest point of the direct connection channel 14a in the direction of gravity G at the interface inside the resonant cavity 13 and the lowest point in the direction of gravity G of the resonant cavity 13; H is the distance in the direction of gravity G between the highest point and the lowest point in the direction of gravity G inside the resonant cavity 13.

[0139] Example 2

[0140] like Figure 2 and Figure 3 As shown, the differences between this second embodiment and the first embodiment are as follows: the centerline of the oil separator 15 and the centerline of the resonant cavity 13 are both perpendicular to the centerline of the drive shaft 302, and the centerline of the resonant cavity 13 and the centerline of the oil separator 15 are located on the same cross-section of the electric compressor 100. Both the resonant cavity 13 and the oil separator 15 are located on the side of the high-pressure cavity 11 away from the compression component 20. The closed-end end of the resonant cavity 13 is provided with an indirect channel 14b communicating with the oil separator 15, so that the indirect channel 14b is located on the axial bottom wall side of the resonant cavity 13.

[0141] Example 3

[0142] like Figure 4 and Figure 5 As shown, the difference between this embodiment three and the above embodiment one includes: an indirect channel 14b communicating with the oil separator 15 is provided on the peripheral wall side of the resonant cavity 13. The high-pressure housing 1 is also provided with a return oil channel 17 communicating with the oil separator 15. The return oil channel 17 passes through the housing end face 16 that is sealed with the compression component 20, so that the accumulated oil in the oil separator 15 can flow back to the compression component 20 through the return oil channel 17. The indirect channel 14b is collinear with the centerline of the return oil channel 17.

[0143] Example 4

[0144] like Figure 6 As shown, the difference between this embodiment four and the above embodiment three is that the resonant cavity 13 is a variable diameter structure, for example, it may include two hole segments with different diameters, wherein the first hole segment 132 with a relatively larger diameter is set closer to the opening side hole end than the second hole segment 133 with a relatively smaller diameter, thereby facilitating processing.

[0145] Example 5

[0146] like Figure 7 As shown, the difference between this fifth embodiment and the third embodiment mentioned above includes: a pressure protection device 4 is provided on the end cap 2. When the internal pressure of the high-pressure housing 1 exceeds the preset threshold of the pressure protection device 4, the pressure protection device 4 will activate the pressure relief function to release the gas inside the high-pressure housing 1. The pressure protection device 4 and the end cap 2 can be an integral structure or a combined structure.

[0147] Example 6

[0148] like Figure 8 As shown, the difference between this sixth embodiment and the first embodiment above includes: the compression component 20 is a rotary compression mechanism, the middle partition 103 is sandwiched between the low-pressure housing 102 and the high-pressure housing 1, the high-pressure chamber 11 is located between the middle partition 103 and the high-pressure housing 1, and the compression component 20 is located in the high-pressure chamber 11.

[0149] Other components of the vehicle 1000 according to embodiments of the present invention, such as the power system, braking system, etc., and its operation, are known to those skilled in the art and will not be described in detail here.

[0150] In the description of this invention, it should be understood that the terms "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0151] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0152] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0153] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0154] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0155] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-pressure housing assembly for an electric compressor, characterized in that, include: A high-pressure housing has a high-pressure chamber and a refrigerant outlet. The compression component of the electric compressor is adapted to discharge compressed refrigerant into the high-pressure chamber. The high-pressure chamber is adapted to discharge refrigerant to the outside of the high-pressure housing through the refrigerant outlet. The internal space of the high-pressure housing, including the high-pressure chamber, forms a refrigerant flow space from the high-pressure chamber to the refrigerant outlet, constituting an exhaust path. The high-pressure housing also has a resonant cavity and a connecting channel. The resonant cavity is connected to the exhaust path through the connecting channel. A first opening formed by machining the resonant cavity is formed on the surface of the high-pressure housing. The high-pressure housing assembly includes an end cap covering the first opening. The high-pressure housing assembly includes a pressure protection device disposed on the end cap. The connecting channel includes a second channel. One end of the second channel is configured as a third connecting port formed on the periphery wall of the resonant cavity. The high-pressure housing has a shell end face. The shell end face has a second opening formed by machining the high-pressure cavity. The high-pressure housing also has an oil separator chamber. The high-pressure cavity exhausts gas to the refrigerant outlet through the oil separator chamber. The other end of the second channel is configured as a fifth connecting port formed on the cavity wall of the oil separator chamber. The resonant cavity and the high-pressure cavity are located on opposite sides of the oil separator chamber. The high-pressure housing also has an oil return channel connecting the oil separator chamber and the shell end face. The centerline of the second channel is located on the extension line of the centerline of the oil return channel.

2. The high-pressure housing assembly for an electric compressor according to claim 1, characterized in that, The resonant cavity is hole-shaped, with the first opening formed at at least one side of the hole end of the resonant cavity, and the flow area of ​​the connecting channel is smaller than the flow area of ​​the resonant cavity.

3. The high-pressure housing assembly for an electric compressor according to claim 2, characterized in that, The resonant cavity is blind-shaped, and the first opening is formed at the opening side hole end of the resonant cavity.

4. The high-pressure housing assembly for an electric compressor according to claim 3, characterized in that, The communication channel includes a first channel, one end of which is configured as a first communication port formed on the closed side hole end of the resonant cavity.

5. The high-pressure housing assembly for an electric compressor according to claim 4, characterized in that, The centerline of the first channel is located on the extension of the centerline of the resonant cavity.

6. The high-pressure housing assembly for an electric compressor according to claim 4, characterized in that, An oil separator is also formed on the high-pressure housing. The high-pressure housing exhausts gas to the refrigerant outlet through the oil separator. The centerline of the resonant cavity extends toward the oil separator along the direction from the open side to the closed side. The first channel is located between the resonant cavity and the oil separator, and the other end of the first channel is constructed as a second communication port formed on the cavity wall of the oil separator.

7. The high-pressure housing assembly for an electric compressor according to claim 1, characterized in that, The high-pressure housing has a shell end face, and the shell end face has a second opening formed by machining the high-pressure cavity. The resonant cavity is located on the side of the high-pressure cavity away from the shell end face. The other end of the second channel is constructed as a fourth communication port formed on the cavity wall of the high-pressure cavity.

8. The high-pressure housing assembly for an electric compressor according to claim 1, characterized in that, At least one of the connecting channels and the resonant cavity satisfies the following relationship: h is less than or equal to 0.3 times H, where h is the distance in the direction of gravity between the highest point of the connecting channel and the resonant cavity in the direction of gravity and the lowest point of the resonant cavity in the direction of gravity, and H is the distance in the direction of gravity between the highest point of the resonant cavity and the lowest point of the resonant cavity in the direction of gravity.

9. The high-pressure housing assembly for an electric compressor according to claim 1, characterized in that, The high-pressure housing has a shell end face, and the shell end face has a second opening formed by machining the high-pressure cavity. The resonant cavity is located on the side of the high-pressure cavity away from the shell end face.

10. The high-pressure housing assembly for an electric compressor according to claim 9, characterized in that, The communication channel includes at least one direct connection channel that penetrates the cavity wall of the high-pressure cavity to connect the high-pressure cavity with the resonant cavity.

11. The high-pressure housing assembly for an electric compressor according to claim 1, characterized in that, The high-pressure housing also has an oil separator chamber, through which the high-pressure housing exhausts gas to the refrigerant outlet. The high-pressure housing assembly also includes an oil separator component disposed in the oil separator chamber, and the communication channel is directly connected to at least one of the high-pressure housing and the oil separator chamber.

12. The high-pressure housing assembly for an electric compressor according to claim 11, characterized in that, The high-pressure housing has a shell end face, and the shell end face has a second opening formed by machining the high-pressure cavity. An oil separator is also formed on the high-pressure housing. The outlet of the oil separator passes through the high-pressure housing to form the refrigerant outlet. The resonant cavity and the oil separator are both located on the side of the high-pressure cavity away from the shell end face.

13. The high-pressure housing assembly for an electric compressor according to claim 12, characterized in that, The communication channel includes at least one direct connection channel that penetrates the cavity wall of the high-pressure cavity to connect the high-pressure cavity with the resonant cavity.

14. The high-pressure housing assembly for an electric compressor according to claim 12, characterized in that, The high-pressure housing also has an oil return channel connecting the oil separator chamber and the end face of the housing. The connecting channel includes at least one indirect channel. The resonant cavity and the high-pressure cavity are located on both sides of the oil separator chamber. The center line of the indirect channel is located on the extension line of the center line of the oil return channel and passes through the cavity wall of the oil separator chamber, so as to indirectly connect the oil separator chamber and the resonant cavity.

15. The high-pressure housing assembly for an electric compressor according to claim 11, characterized in that, The oil separator chamber is orifice-shaped, and the centerline of the resonant cavity and the centerline of the oil separator chamber are located on the same cross-section or the same longitudinal section of the electric compressor.

16. An electric compressor, characterized in that, include: A housing component, the housing component comprising a high-pressure housing assembly for an electric compressor according to any one of claims 1-15; A compression component, wherein the exhaust port of the compression component is connected to the high-pressure chamber to discharge compressed refrigerant into the high-pressure chamber; The motor component includes a motor body and a drive shaft, wherein the motor body drives the compression component to perform compression work through the drive shaft.

17. The electric compressor according to claim 16, characterized in that, The housing component also includes: A partition plate is provided, with the compression component and the motor body placed on opposite sides of the partition plate, and the drive shaft passing through the partition plate to connect with the compression component. A low-pressure housing is formed between the low-pressure housing and the middle partition to accommodate the motor body. A refrigerant inlet communicating with the low-pressure cavity is formed on the low-pressure housing, and the compression component draws refrigerant from the low-pressure cavity.

18. The electric compressor according to claim 17, characterized in that, The partition plate is sandwiched between the low-pressure housing and the compression component, and the high-pressure housing is located on the side of the compression component opposite to the partition plate.

19. The electric compressor according to claim 17, characterized in that, The partition plate is sandwiched between the low-pressure housing and the high-pressure housing, the high-pressure chamber is located between the partition plate and the high-pressure housing, and the compression component is located inside the high-pressure chamber.

20. An air conditioning system, characterized in that, Includes the electric compressor according to any one of claims 16-19.

21. A vehicle, characterized in that, include: The vehicle body and the air conditioning system mounted on the vehicle body, wherein the air conditioning system is the air conditioning system according to claim 20.

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