Low pressure housing, compressor, thermal management device and vehicle

Abstract

The application discloses a low-pressure shell, a compressor, a thermal management device and a vehicle. The low-pressure shell has a low-pressure cavity, a suction flow channel, a first evaporator interface, a second evaporator interface, a main valve interface and a low-pressure side valve front flow channel. The low-pressure cavity is communicated with the suction flow channel. The suction flow channel is communicated with the first evaporator interface. The second evaporator interface is communicated with the main valve interface. The main valve interface is communicated with the low-pressure side valve front flow channel. The first evaporator interface and the second evaporator interface are used for connecting evaporators. The main valve interface is used for installing a main throttle valve which can adjust the flow between the low-pressure side valve front flow channel and the second evaporator interface. According to the low-pressure shell of the embodiment of the application, the integration of the compressor and the thermal management device can be improved, so that the energy consumption is reduced, the space utilization is improved and the like.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a low-pressure housing, a compressor, a thermal management device, and a vehicle. Background Technology

[0002] The innovation of thermal management systems for new energy vehicles is the core breakthrough for technological iteration in the industry. With the leap in energy density of power batteries and the popularization of high-voltage fast charging platforms, traditional split thermal management systems are difficult to meet the requirements of both accurately controlling the temperature of the battery cells to keep them within a suitable operating range and taking into account the cooling needs of the electric drive system and the thermal comfort needs of the cabin. The existing architecture has shown technical bottlenecks such as high energy consumption, space redundancy and slow response. Summary of the Invention

[0003] One object of the present invention is to provide a low-pressure housing, compressor, thermal management device and vehicle that can improve the integration of the compressor and thermal management device, thereby reducing energy consumption and improving space utilization.

[0004] According to an embodiment of the present invention, a low-pressure housing is used for a thermal management device. The low-pressure housing has a low-pressure chamber, an intake flow channel, a first evaporator interface, a second evaporator interface, a main valve interface, and a low-pressure side valve pre-flow channel. The low-pressure chamber is connected to the intake flow channel, the intake flow channel is connected to the first evaporator interface, the second evaporator interface is connected to the main valve interface, and the main valve interface is connected to the low-pressure side valve pre-flow channel. The first evaporator interface and the second evaporator interface are used to connect evaporators, and the main valve interface is used to install a main throttling valve that can adjust the flow rate between the low-pressure side valve pre-flow channel and the second evaporator interface.

[0005] According to the low-pressure housing of the present invention, the integration of the compressor and thermal management device can be improved, thereby reducing energy consumption and improving space utilization.

[0006] In addition, the low-pressure housing according to the above embodiments of the present invention may also have the following additional technical features:

[0007] In some embodiments, the intake air passage is configured as a straight channel extending in a direction perpendicular to the axis of the low-pressure chamber, with one end of the intake air passage connected to the low-pressure chamber.

[0008] In some embodiments, the first evaporator inlet extends in a direction parallel to the axis and penetrates the side of the intake channel.

[0009] In some embodiments, the other end of the intake channel is open and configured as a low-pressure side refrigerant charging port.

[0010] In some embodiments, the low-pressure housing also has a low-pressure side sensor interface that penetrates the sidewall of the air intake channel.

[0011] In some embodiments, the low-pressure housing includes a low-pressure side valve pre-flow channel pipe disposed on the outer side of the peripheral wall of the low-pressure chamber, the low-pressure side valve pre-flow channel being disposed in the low-pressure side valve pre-flow channel pipe, and the low-pressure side valve pre-flow channel pipe extending in a direction parallel to the axis of the low-pressure chamber.

[0012] In some embodiments, the outer peripheral surface of the flow channel pipe before the low-pressure side valve is connected to the outer peripheral surface of the peripheral wall of the low-pressure chamber.

[0013] In some embodiments, a reinforcing rib is connected between the flow channel pipe before the low-pressure side valve and the peripheral wall of the low-pressure chamber.

[0014] In some embodiments, the low-pressure housing further includes a low-pressure side communication channel that extends in a direction perpendicular to the axis of the low-pressure chamber and connects the low-pressure side valve pre-channel and the main valve interface.

[0015] In some embodiments, the second evaporator interface is opposite to and communicates with the main valve interface along a direction parallel to the axis of the low-pressure chamber.

[0016] In some embodiments, the low-pressure housing further includes a low-pressure side bypass channel that connects to the intake channel.

[0017] In some embodiments, the low-pressure housing includes a low-pressure side bypass pipe disposed on the outer side of the peripheral wall of the low-pressure cavity, the low-pressure side bypass flow channel is disposed in the low-pressure side bypass pipe, and the low-pressure side bypass pipe extends in a direction parallel to the axis of the low-pressure cavity.

[0018] In some embodiments, the outer peripheral surface of the low-pressure side bypass pipe is connected to the outer peripheral surface of the peripheral wall of the low-pressure cavity.

[0019] In some embodiments, a reinforcing rib is connected between the low-pressure side bypass pipe and the peripheral wall of the low-pressure cavity.

[0020] In some embodiments, the low-pressure side bypass channel, the low-pressure side valve inlet channel, the main valve interface, the first evaporator interface, and the second evaporator interface are located on the same side of the low-pressure chamber.

[0021] In some embodiments, the low-pressure side bypass channel is opposite to and communicates with the first evaporator interface along the axis of the low-pressure chamber.

[0022] In some embodiments, the low-pressure housing further includes an electrical control cavity, wherein the electrical control cavity, the first evaporator interface, and the second evaporator interface are located on the same side of the low-pressure cavity along the axis of the low-pressure cavity, and the electrical control cavity and the low-pressure cavity are separated by a partition.

[0023] In some embodiments, the partition includes an end plate disposed at the end of the low-pressure cavity and an extension plate disposed on the outer side of the peripheral wall of the low-pressure cavity, and the electronic control cavity is disposed on the side of the partition away from the low-pressure cavity.

[0024] In some embodiments, the end plate is provided with a motor wiring port, which connects the electrical control cavity and the low-voltage cavity.

[0025] In some embodiments, the extension plate is provided with a first mounting port for installing a high-voltage connector.

[0026] In some embodiments, the extension plate is provided with a second mounting port for mounting a low-voltage connector.

[0027] In some embodiments, the side of the end plate opposite to the low-pressure cavity is provided with a heat dissipation surface for heat exchange with the power device.

[0028] According to an embodiment of the present invention, a compressor includes a high-pressure housing and the aforementioned low-pressure housing, the low-pressure housing and the high-pressure housing being distributed and connected along the axis of the compressor, and the high-pressure housing having a high-pressure chamber.

[0029] A thermal management device according to an embodiment of the present invention includes: the aforementioned compressor, condenser, and evaporator, wherein the condenser is arranged along the axis of the compressor outside the high-pressure chamber, and the condenser is configured to heat the heat exchange medium by means of a refrigerant phase change; the evaporator is arranged along the axis of the compressor outside the low-pressure chamber, and the evaporator is configured to cool the heat exchange medium by means of a refrigerant phase change.

[0030] The vehicle according to an embodiment of the present invention includes the aforementioned thermal management device; or includes the aforementioned compressor. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a low-pressure housing according to an embodiment of the present invention.

[0032] Figure 2 This is another schematic diagram of a low-pressure housing according to an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram of an accessory mounted on a low-pressure housing according to an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of a thermal management device according to an embodiment of the present invention.

[0035] Figure 5 This is another schematic diagram of a thermal management device according to an embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram of a high-pressure housing according to an embodiment of the present invention.

[0037] Figure 7 This is another schematic diagram of a high-pressure housing according to an embodiment of the present invention.

[0038] Figure 8 This is a schematic diagram of an accessory mounted on a high-pressure housing according to an embodiment of the present invention.

[0039] Figure label:

[0040] Thermal management device 100, low-pressure housing 11a, low-pressure chamber 1101, suction channel 1102, first evaporator interface 1103, second evaporator interface 1104, main valve interface 1105, low-pressure side valve inlet channel 1106, low-pressure side refrigerant charging port 1107, low-pressure side sensor interface 1108, low-pressure side valve inlet channel pipe 1109, low-pressure side connecting channel 1110, low-pressure side bypass channel 1111, low pressure... Side bypass pipe 1112, reinforcing rib 1113, electrical control cavity 1114, motor wiring port 1115, first mounting port 1116, second mounting port 1117, end plate 1118, extension plate 1119, heat dissipation surface 1120, low-pressure side connection hole 1121, high-pressure housing 11b, exhaust channel 1132, first condenser interface 1133, second condenser interface 1134, high-pressure side valve inlet channel 1135, oil return. 1136, Exhaust port 1137, High-pressure side sensor interface 1138, Inner cavity 1139, Outer cavity 1140, Isolation rib 1141, High-pressure side refrigerant charging port 1142, High-pressure side valve inlet pipe 1143, High-pressure side bypass pipe 1144, Bypass valve interface 1145, High-pressure side bypass pipe 1146, High-pressure side connection hole 1147, High-pressure side connecting pipe 1148, Evaporator 12, First heat exchange inlet 1201, First heat exchange outlet 1202, Condenser 13, Second heat exchange inlet 1301, Second heat exchange outlet 1302, Liquid receiver assembly 14, Subcooler 15, Main throttle valve 16, Bypass throttle valve 17, Low-pressure side sensor 301, High-pressure side sensor 302, Low-pressure side charging valve 303, High-pressure side charging valve 304, Bearing bracket 305, Scroll 306, High-pressure connector 307, Low-pressure connector 308. Detailed Implementation

[0041] This invention employs a more efficient and compact system design, reducing the number of components, system weight and volume, and improving overall vehicle energy efficiency. Meanwhile, under the "dual carbon" context, the use of environmentally friendly flammable refrigerants to replace traditional Freon-based refrigerants in thermal management devices has become a mainstream trend. Developing highly integrated thermal management devices can reduce the amount of flammable refrigerant required and improve system safety. In view of the above needs, this invention provides a highly integrated low-pressure housing, compressor, thermal management device, and vehicle.

[0042] 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.

[0043] like Figures 1 to 3 According to an embodiment of the present invention, a low-pressure housing 11a is used in a thermal management device 100. The low-pressure housing 11a has a low-pressure chamber 1101, an intake channel 1102, a first evaporator interface 1103, a second evaporator interface 1104, a main valve interface 1105, and a low-pressure side valve pre-flow channel 1106. The low-pressure chamber 1101 is connected to the intake channel 1102, the intake channel 1102 is connected to the first evaporator interface 1103, the second evaporator interface 1104 is connected to the main valve interface 1105, and the main valve interface 1105 is connected to the low-pressure side valve pre-flow channel 1106. The first evaporator interface 1103 and the second evaporator interface 1104 are used to connect an evaporator 12, and the main valve interface 1105 is used to install a main throttle valve 16 that can adjust the flow rate between the low-pressure side valve pre-flow channel 1106 and the second evaporator interface 1104.

[0044] According to an embodiment of the present invention, the low-pressure housing 11a integrates the low-pressure chamber 1101, the suction channel 1102, the first evaporator interface 1103, the second evaporator interface 1104, the main valve interface 1105, and the low-pressure side valve inlet channel 1106, thereby improving the integration of the compressor and the thermal management device 100, thus reducing energy consumption and improving space utilization. It can also reduce the amount of refrigerant used, and the highly integrated thermal management system can reduce the amount of combustible refrigerant charged, improving system safety.

[0045] In a compressor with the low-pressure housing 11a, the low-pressure chamber 1101 can be used for the installation and fixation of the motor in the compressor. The low-pressure chamber 1101, the suction channel 1102, the first evaporator interface 1103, the second evaporator interface 1104, the main valve interface 1105, and the low-pressure side valve inlet channel 1106 can be combined to form a refrigerant flow channel, which is used to connect components such as the condenser 13, the main throttle valve 16, and the evaporator 12 to complete the vapor compression refrigeration / heating cycle. The low-pressure side valve inlet channel 1106 is connected to the evaporator 12 through the main throttle valve 16 and the second evaporator interface 1104. The main valve interface 1105 is used for the installation and fixation of the main throttle valve 16, providing a throttling effect on the high-temperature and high-pressure refrigerant at the outlet of the condenser 13, ensuring that the refrigerant becomes a low-temperature and low-pressure two-phase refrigerant and enters the evaporator 12 to absorb heat. The intake channel 1102 is connected to the low-pressure chamber 1101 through the intake port. The intake port can be located on the inner circumferential surface of the low-pressure chamber 1101, and can be formed by the intake channel 1102 penetrating through the inner circumferential surface of the low-pressure chamber 1101. The intake channel 1102 is connected to the evaporator 12 through the first evaporator interface 1103, ensuring that the low-temperature, low-pressure refrigerant gas at the outlet of the evaporator 12 can enter the low-pressure chamber 1101 for compression.

[0046] In the compressor with the low-pressure housing 11a, the refrigerant discharged from the high-pressure chamber of the compressor flows to the main valve port 1105 through the low-pressure side valve pre-flow channel 1106, then flows to the second evaporator port 1104 after passing through the main throttle valve 16 installed on the main valve port 1105, and flows into the evaporator 12 from the second evaporator port 1104. After heat exchange in the evaporator 12, it flows back to the low-pressure chamber 1101 through the first evaporator port 1103 and the suction channel 1102, and after being compressed by the compressor, it flows to the high-pressure chamber, completing the refrigerant cycle.

[0047] like Figure 1 In some embodiments, the suction channel 1102 can be configured as a straight channel extending in a direction perpendicular to the axis of the low-pressure chamber 1101, and one end of the suction channel 1102 can be connected to the low-pressure chamber 1101. By making the suction channel 1102 a straight channel, it is convenient to form and process the suction channel 1102 on the low-pressure housing 11a, and it is possible to reduce the flow resistance of the refrigerant during the flow of the refrigerant along the suction channel 1102, thereby improving the energy efficiency of the compressor having the low-pressure housing 11a.

[0048] Additionally, the suction channel 1102 can be configured to penetrate the inner circumferential surface of the low-pressure chamber 1101, so that the suction channel 1102 connects to the suction port of the low-pressure chamber 1101, facilitating fluid entry into the low-pressure chamber 1101. Furthermore, the motor in the compressor can be located within the low-pressure chamber 1101. Additionally, the extension direction of the suction channel 1102 can deviate from the axis of the low-pressure chamber 1101, facilitating the refrigerant to enter the low-pressure chamber 1101 through the suction channel 1102 in a direction deviating from the axis of the low-pressure chamber 1101. The axis of the low-pressure chamber 1101 can be coaxial with the axis of the compressor or the axis of the motor, etc.

[0049] Combination Figure 1 and Figure 2 The first evaporator inlet 1103 can extend in a direction parallel to the axis, and the first evaporator inlet 1103 can penetrate the side of the suction channel 1102. This facilitates the formation of the first evaporator inlet 1103 in the low-pressure housing 11a, as well as the connection of the low-pressure housing 11a to the evaporator 12 and the connection of the first evaporator inlet 1103 to the evaporator 12. The first evaporator inlet 1103 can be positioned facing away from the low-pressure chamber 1101, and the evaporator 12 can be installed in the low-pressure housing 11a on the side facing away from the low-pressure chamber 1101.

[0050] Combination Figure 1 and Figure 2 The low-pressure housing 11a also has a low-pressure side refrigerant filling port 1107. The other end of the suction channel 1102 passes through and forms the low-pressure side refrigerant filling port 1107. That is, the suction channel 1102 extends in a straight line, and both ends of the suction channel 1102 pass through in this straight line. One end of the suction channel 1102 passes through the inner circumferential surface of the suction chamber to form a suction port, and the other end of the suction channel 1102 passes through to form the low-pressure side refrigerant filling port 1107. The low-pressure side refrigerant filling port 1107 can be equipped with a low-pressure side charging valve 303 to facilitate the injection of refrigerant into the low-pressure chamber 1101 through the low-pressure side refrigerant filling port 1107. This also simplifies the structure and manufacturing process of the low-pressure housing 11a.

[0051] Combination Figure 1 and Figure 2 The low-pressure housing 11a may also have a low-pressure side sensor interface 1108, which penetrates the side wall of the intake air passage 1102. The low-pressure side sensor interface 1108 is used to install and fix the low-pressure side sensor 301 to obtain the temperature and pressure of the refrigerant at the compressor intake port and monitor the operating conditions of the vehicle's thermal management system.

[0052] Combination Figure 1 and Figure 2In some embodiments, the low-pressure housing 11a may include a low-pressure side valve inlet pipe 1109, which may be located on the outer side of the peripheral wall of the low-pressure chamber 1101. A low-pressure side valve inlet channel 1106 is located on the low-pressure side valve inlet pipe 1109, and the low-pressure side valve inlet pipe 1109 extends in a direction parallel to the axis of the low-pressure chamber 1101. This simplifies the structure of the low-pressure housing 11a and facilitates the flow of refrigerant after heat exchange in the condenser 13 into the main throttle valve 16 via the low-pressure side valve inlet pipe 1109.

[0053] Optionally, the outer peripheral surface of the flow channel pipe 1109 before the low-pressure side valve can be connected to the outer peripheral surface of the peripheral wall of the low-pressure chamber 1101. Additionally, in conjunction with... Figure 1 and Figure 2 The flow channel pipe 1109 before the low-pressure side valve can also be connected to the peripheral wall of the low-pressure chamber 1101 by a reinforcing rib 1113. This can improve the strength of the connection structure between the flow channel pipe 1109 before the low-pressure side valve and the peripheral wall of the low-pressure chamber 1101, thereby improving the structural strength and stability of the low-pressure housing 11a.

[0054] Combination Figure 1 and Figure 2 In some embodiments, the low-pressure housing 11a may further include a low-pressure side connecting channel 1110, which extends in a direction perpendicular to the axis of the low-pressure chamber 1101. The low-pressure side connecting channel 1110 connects the low-pressure side valve pre-flow channel 1106 and the main valve interface 1105. This allows the refrigerant to flow from the low-pressure side connecting channel 1110 to the main valve interface 1105 after passing through the low-pressure side valve pre-flow channel 1106, facilitating the regulation of the refrigerant flow rate in the refrigerant circuit using the main throttle valve 16, thereby achieving the regulation of the refrigerant flow rate in the thermal management device 100 and facilitating temperature regulation using the thermal management device 100.

[0055] The low-pressure side connecting flow channel 1110 can be configured as a straight flow channel. One end of the low-pressure side connecting flow channel 1110 can penetrate the inner circumferential surface of the low-pressure side valve inlet flow channel 1106 and connect to the low-pressure side valve inlet flow channel 1106. The other end of the low-pressure side connecting flow channel 1110 can penetrate and be sealed with a plugging component.

[0056] In addition, the main valve interface 1105 and the second evaporator interface 1104 can be respectively located on both sides of the low-pressure side connecting channel 1110 in a direction parallel to the axis. The main valve interface 1105 is located on the side closer to the low-pressure chamber 1101, and the second evaporator interface 1104 is located on the side away from the low-pressure chamber 1101.

[0057] Combination Figure 1 and Figure 2The second evaporator interface 1104 can be opposite to and communicate with the main valve interface 1105 along a direction parallel to the axis of the low-pressure chamber 1101. A partition can be provided at the end of the low-pressure housing 11a, and the partition can be configured to extend at least partly beyond the peripheral wall of the low-pressure chamber 1101. The second evaporator interface 1104 and the main valve interface 1105 can be located on the partition and on the outer side of the peripheral wall of the low-pressure chamber 1101, so as to facilitate the connection of the low-pressure housing 11a to the evaporator 12 and the main throttle valve 16, and also to facilitate the forming of the low-pressure housing 11a.

[0058] In addition, the second evaporator interface 1104 and the main valve interface 1105 are located on the outer side of the peripheral wall of the low-pressure chamber 1101.

[0059] Combination Figure 1 and Figure 2 In some embodiments, the low-pressure housing 11a may further include a low-pressure side bypass channel 1111, which connects to the suction channel 1102. The low-pressure side bypass channel 1111 can guide the refrigerant discharged from the high-pressure chamber of the compressor to the suction channel 1102 and then to the low-pressure chamber 1101, thereby achieving hot gas bypass of the refrigerant. The low-pressure side bypass channel 1111 and the suction channel 1102 are connected to introduce the high-temperature, high-pressure refrigerant from the compressor outlet into the compressor suction port in hot gas bypass mode, where it mixes with the low-temperature, low-pressure two-phase refrigerant after passing through the main throttle valve 16 and the evaporator 12, and then enters the compressor.

[0060] Combination Figure 1 and Figure 2 The low-pressure housing 11a may include a low-pressure side bypass pipe 1112, which may be located on the outer side of the peripheral wall of the low-pressure chamber 1101. A low-pressure side bypass channel 1111 is located on the low-pressure side bypass pipe 1112, and the low-pressure side bypass pipe 1112 extends in a direction parallel to the axis of the low-pressure chamber 1101. This simplifies the structure of the low-pressure housing 11a and facilitates the flow of refrigerant to the low-pressure chamber 1101 via hot gas bypass.

[0061] Optionally, the outer peripheral surface of the low-pressure side bypass pipe 1112 can be connected to the outer peripheral surface of the peripheral wall of the low-pressure cavity 1101. Additionally, in conjunction with... Figure 1 and Figure 2 A reinforcing rib 1113 connects the low-pressure side bypass pipe 1112 to the peripheral wall of the low-pressure cavity 1101. This can improve the strength of the connection structure between the low-pressure side bypass pipe 1112 and the peripheral wall of the low-pressure cavity 1101, thereby improving the structural strength and stability of the low-pressure shell 11a.

[0062] Combination Figure 1 and Figure 2In some embodiments, at least one of the low-pressure side bypass channel 1111, the low-pressure side inlet valve channel 1106, the main valve interface 1105, the first evaporator interface 1103, and the second evaporator interface 1104 may be located on the outer side of the peripheral wall of the low-pressure chamber 1101. Optionally, the low-pressure side bypass channel 1111, the low-pressure side inlet valve channel 1106, the main valve interface 1105, the first evaporator interface 1103, and the second evaporator interface 1104 may be located on the same side of the low-pressure chamber 1101. Referring to the accompanying drawings, the axis of the low-pressure chamber 1101 is arranged to extend in the left-right direction, and at least one of the low-pressure side bypass channel 1111, the low-pressure side inlet valve channel 1106, the main valve interface 1105, the first evaporator interface 1103, and the second evaporator interface 1104 may be located on the front side of the peripheral wall of the low-pressure chamber 1101.

[0063] Combination Figure 1 and Figure 2 The low-pressure side bypass channel 1111 can be opposite to and communicate with the first evaporator interface 1103 along the axis of the low-pressure chamber 1101. This allows the low-pressure side bypass channel 1111 and the first evaporator interface 1103 to be easily combined into a through channel extending parallel to the axis, thus facilitating the fabrication of the low-pressure housing 11a and the first evaporator interface 1103, simplifying the structure and manufacturing process of the low-pressure housing 11a. Furthermore, it allows refrigerant that has passed through the evaporator 12 and refrigerant that has not passed through the evaporator 12 to easily enter the low-pressure chamber 1101 after converging in the suction channel 1102.

[0064] Combination Figure 1 and Figure 2 In some embodiments, the low-pressure housing 11a further includes an electrical control cavity 1114. The electrical control cavity 1114, the first evaporator interface 1103, and the second evaporator interface 1104 are located on the same side of the low-pressure cavity 1101 along its axis. The electrical control cavity 1114 and the low-pressure cavity 1101 are separated by a partition. At least a portion of the electrical control components can be disposed within the electrical control cavity 1114, thereby allowing the refrigerant within the low-pressure cavity 1101 to dissipate heat from the electrical control components, thus improving the operational stability of the compressor.

[0065] The electrical control chamber 1114 is used to mount the electrical control board, which receives, converts, and transmits high and low voltage electricity to ensure that the compressor can operate stably at the set speed and torque, while providing over-temperature and over-current protection for the compressor. The electrical control chamber 1114 and the evaporator 12 are located on the same side and connected by a partition, which can be used to reduce the temperature of the compressor's electrical control board, while reducing the flow resistance and ineffective overheating of the refrigerant at the evaporator 12 outlet in the suction channel 1102, which is beneficial to improving system performance.

[0066] Combination Figure 1 and Figure 2The partition may include an end plate 1118 disposed at the end of the low-pressure chamber 1101 and an extension plate 1119 disposed on the outer side of the peripheral wall of the low-pressure chamber 1101. The electrical control chamber 1114 is disposed on the side of the partition away from the low-pressure chamber 1101. This can increase the volume and space utilization of the low-pressure chamber 1101. The extension plate 1119 may be disposed above the end plate 1118, and the extension plate 1119 extends beyond the upper wall of the low-pressure chamber 1101.

[0067] Combination Figure 1 and Figure 2 The end plate 1118 may be provided with a motor wiring port 1115, which connects the electrical control cavity 1114 and the low-pressure cavity 1101. At least a portion of the compressor's electrical control components are located in the electrical control cavity 1114. The electrical control components may include an electrical control board and a high-voltage cable. The high-voltage cable may pass through the motor wiring port 1115 and be electrically connected to the compressor's motor stator and electrical control board.

[0068] like Figure 1 The extension plate 1119 may be provided with a first mounting port 1116, which is used to install the high-pressure connector 307. The high-pressure connector 307 can provide high-voltage electricity to the compressor to drive the motor to run and complete the intake, compression and exhaust processes.

[0069] Combination Figure 1 and Figure 2 The extension plate 1119 may be provided with a second mounting port 1117, which is used to install the low-pressure connector 308. The low-pressure connector 308 can ensure the transmission of signals such as compressor speed, power, voltage, current and temperature between the compressor and the host computer, providing control and protection for the compressor.

[0070] High-voltage connector 307 connects to the vehicle's high-voltage wiring harness, providing high-voltage electricity to the compressor and enabling the interlock function of the high-voltage system. Low-voltage connector 308 connects to the vehicle's low-voltage wiring harness, providing low-voltage control signals to the compressor. The vehicle controls the compressor and receives feedback signals from the compressor through low-voltage connector 308.

[0071] The control board receives the control signal from the low-voltage connector 308 and converts the DC power from the high-voltage connector 307 into AC power with adjustable frequency and voltage, generating a rotating magnetic field through the stator coils. The motor rotor rotates under the influence of this magnetic field. The compressor's moving scroll and the motor rotor are connected via the motor shaft, and the moving scroll undergoes helical translational motion driven by the motor rotor.

[0072] Combination Figure 1 and Figure 2The side of the end plate 1118 facing away from the low-pressure chamber 1101 is provided with a heat dissipation surface 1120 for heat exchange with the power device. Specifically, the wall between the intake chamber and the control chamber 1114 has a heat dissipation surface 1120 facing the control chamber 1114. The control component includes a power device disposed in the control chamber 1114. The power device and the heat dissipation surface 1120 are used for heat exchange between the power device and the refrigerant in the intake chamber. The heat generated by the power module (IGBT module) on the control board is efficiently conducted through the heat dissipation surface 1120. The heat conducted to the low-pressure housing 11a is released into the refrigerant through convection heat exchange between the low-pressure housing 11a and the refrigerant.

[0073] Combination Figure 1 and Figure 2 The low-pressure chamber 1101 has multiple low-pressure side connection holes 1121 on its peripheral wall, which are distributed along the axis of the cylinder. This facilitates the connection between the low-pressure housing 11a and the high-pressure housing 11b, thereby improving the compressor's stability and simplifying its manufacturing process. The low-pressure side connection holes 1121 are used for connecting and securing the low-pressure housing 11a and the high-pressure housing 11b of the compressor.

[0074] The low-pressure housing 11a can not only realize conventional cooling and heating cycles to meet the cooling / heating needs of the automotive thermal management system, but also realize hot gas bypass circulation in low-temperature environments, improving the problem of conventional heat pumps having low capacity and slow start-up in low-temperature environments.

[0075] The low-pressure housing 11a of the present invention relates to the field of thermal management technology. The low-pressure housing 11a may have a low-pressure chamber 1101, an electrical control chamber 1114, an intake air passage 1102, a low-pressure side valve pre-flow passage 1106, a low-pressure side bypass flow passage 1111, a first mounting port 1116, a second mounting port 1117, an intake port, a main valve interface 1105, a low-pressure side sensor interface 1108, a low-pressure side refrigerant charging port 1107, a first evaporator interface 1103, a second evaporator interface 1104, multiple low-pressure side connection holes 1121, and other accessory mounting holes, etc.

[0076] The low-pressure housing 11a can be connected to components such as the high-pressure connector 307, electronic control board, motor stator, motor rotor, crankshaft, scroll 306, bearing bracket 305, high-pressure housing 11b, evaporator 12, main throttle valve 16, condenser 13, and receiver to form an automotive thermal management system, realizing cooling and heating functions. The low-pressure housing 11a is equipped with a refrigerant circuit channel and a refrigerant bypass channel, which can accommodate both normal heat pump heating and hot gas bypass heating in low-temperature environments. The low-pressure housing 11a achieves a high degree of integration of the low-pressure components of the thermal management system, which can significantly reduce the size and weight of the thermal management system and reduce the refrigerant charge.

[0077] The high and low voltage power supplies control the motor via an electronic control board. Inside the low-pressure chamber 1101, the compressor stator generates a magnetic field under the influence of alternating current. The stator drives the crankshaft to rotate, which in turn drives the moving scroll to perform planar eccentric motion relative to the stationary scroll. As the moving scroll moves along its orbit, the refrigerant enters the low-pressure chamber 1101 from the intake port, passes through the stator and rotor, and enters the gradually narrowing chamber. It is compressed during the swirling motion of the scroll, and finally, the high-pressure gas is discharged from the central exhaust port 1137. This cycle repeats continuously, realizing the refrigerant intake, compression, and exhaust processes in the thermal management system.

[0078] In normal cooling / heating mode, the bypass throttle valve 17 is closed. The high-temperature, high-pressure liquid refrigerant from the outlet of the condenser 13 reaches the main throttle valve 16 through the normal circulating refrigerant channel. After throttling, the refrigerant becomes a low-temperature, low-pressure two-phase state and enters the evaporator 12. After absorbing heat in the evaporator 12, the refrigerant becomes a low-pressure superheated gas and enters the low-pressure chamber 1101 of the compressor through the suction port. After being compressed by the compressor, it becomes a high-temperature, high-pressure refrigerant gas and enters the condenser 13 through the exhaust channel 1132. After releasing heat in the condenser 13 and becoming a high-pressure liquid phase, the refrigerant returns to the evaporator 12 through the refrigerant channel, completing the vapor compression cycle.

[0079] In ultra-low temperature environments, conventional heat pumps suffer from limited capacity and slow start-up. Hot gas bypass circulation can significantly alleviate these limitations. Compared to positive temperature coefficient thermistor heating systems (WPTC), hot gas bypass circulation also offers a significant cost advantage. In hot gas bypass circulation mode, the high-temperature, high-pressure refrigerant gas discharged from the compressor is divided into two parts. One part enters the condenser 13 to release heat, then flows through the conventional refrigerant circulation channel, is throttled by the main expansion valve 16, and enters the evaporator 12 before returning to the compressor suction port. The other part of the discharged high-temperature, high-pressure refrigerant gas flows through the hot gas bypass channel, passes through the bypass expansion valve 17, and enters the compressor suction port. It mixes with the refrigerant at the evaporator 12 outlet and then enters the compressor suction chamber. The bypass expansion valve 17 adjusts the refrigerant flow rate in the bypass channel by changing its opening, thereby controlling the refrigerant pressure at the compressor suction port. The main expansion valve 16 controls the superheat of the refrigerant at the compressor suction port.

[0080] like Figures 1 to 5According to an embodiment of the present invention, the compressor includes a high-pressure housing 11b and the aforementioned low-pressure housing 11a. The low-pressure housing 11a and the high-pressure housing 11b are distributed and connected along the axis of the compressor, and the high-pressure housing 11b has a high-pressure chamber. By using the aforementioned low-pressure housing 11a, the low-pressure chamber 1101, the suction flow channel 1102, the first evaporator interface 1103, the second evaporator interface 1104, the main valve interface 1105, and the low-pressure side valve inlet flow channel 1106 are integrated into the low-pressure housing 11a, thereby improving the integration of the compressor and the thermal management device 100, thereby reducing energy consumption and improving space utilization. The amount of refrigerant used can be reduced, and the highly integrated thermal management system can reduce the amount of combustible refrigerant charged, improving system safety.

[0081] In addition, such as Figures 6 to 8 According to an embodiment of the present invention, the high-pressure housing 11b has a high-pressure chamber, an exhaust channel 1132, a first condenser interface 1133, a second condenser interface 1134, and a high-pressure side valve inlet channel 1135. The high-pressure chamber is connected to the exhaust channel 1132, the exhaust channel 1132 is connected to the first condenser interface 1133, and the second condenser interface 1134 is connected to the high-pressure side valve inlet channel 1135. The first condenser interface 1133 and the second condenser interface 1134 are used to connect the condenser 13.

[0082] The high-pressure housing 11b may include a high-pressure side valve inlet flow channel 1143, which may be located on the outer side of the peripheral wall of the high-pressure chamber. A high-pressure side valve inlet flow channel 1135 is located on the high-pressure side valve inlet flow channel 1143, and the high-pressure side valve inlet flow channel 1143 extends in a direction parallel to the axis of the high-pressure chamber. This simplifies the structure of the high-pressure housing 11b and facilitates the flow of refrigerant after heat exchange in the condenser 13 into the main throttle valve 16 via the high-pressure side valve inlet flow channel 1143.

[0083] Optionally, the exhaust channel 1132 can be configured as a straight channel extending in a direction perpendicular to the axis of the high-pressure chamber, and the exhaust channel 1132 is provided with an exhaust port communicating with the high-pressure chamber. The exhaust channel 1132 can be configured to extend in a vertical direction and be inclined forward in an upward direction. By setting the exhaust channel 1132 at an incline, it is possible to facilitate the flow of refrigerant and optimize the separation effect of lubricating oil carried in the refrigerant, thereby improving the performance of the compressor with the high-pressure housing 11b. The lower end of the exhaust channel 1132 is provided with an oil return port 1136. This can further optimize the separation effect of lubricating oil carried in the refrigerant, facilitate the lubricating oil to lubricate the internal components of the compressor, and improve the performance of the compressor with the high-pressure housing 11b. The exhaust port is located on the side wall of the exhaust channel 1132. This allows the refrigerant in the high-pressure chamber to easily enter the exhaust channel 1132 and achieve effective gas-liquid separation.

[0084] Furthermore, the high-pressure housing 11b also includes a high-pressure side bypass channel 1144 and a bypass valve interface 1145. The exhaust channel 1132 is connected to the bypass valve interface 1145, and the bypass valve interface 1145 is connected to the high-pressure side bypass channel 1144. The bypass valve interface 1145 is used to install a bypass throttle valve 17 that can adjust the flow rate between the high-pressure side bypass channel 1144 and the exhaust channel 1132. The high-pressure side bypass channel 1144 can guide the refrigerant discharged from the high-pressure chamber of the compressor to the suction channel 1102 and then to the low-pressure chamber 1101, thereby realizing hot gas bypass of the refrigerant. The high-pressure side bypass channel 1144 and the suction channel 1102 are connected to introduce the high-temperature and high-pressure refrigerant from the compressor outlet into the compressor suction port in the hot gas bypass mode, where it mixes with the low-temperature and high-pressure two-phase refrigerant after passing through the main throttle valve 16 and the evaporator 12, and then enters the compressor.

[0085] The high-pressure housing 11b includes a high-pressure side bypass pipe 1146 located on the outer side of the peripheral wall of the high-pressure chamber, and a high-pressure side bypass channel 1144 located on the high-pressure side bypass pipe 1146. The high-pressure side bypass pipe 1146 extends in a direction parallel to the axis of the high-pressure chamber. This simplifies the structure of the high-pressure housing 11b and facilitates the flow of refrigerant to the high-pressure chamber via hot gas bypass.

[0086] The low-pressure housing 11a and the high-pressure housing 11b are distributed along the compressor axis and connected to each other. The low-pressure housing 11a has a low-pressure side connection hole 1121, and the high-pressure housing 11b has a high-pressure side connection hole 1147. The low-pressure side connection hole 1121 and the high-pressure side connection hole 1147 are opposite to each other along the compressor axis, and the stationary scroll is located between the low-pressure housing 11a and the high-pressure housing 11b. The low-pressure side valve inlet flow channel 1106 and the high-pressure side valve inlet flow channel 1135 are opposite to each other along the axial direction and connected. The low-pressure side bypass flow channel 1111 and the high-pressure side bypass flow channel 1144 are opposite to each other along the axial direction and connected. The end of the high-pressure side bypass pipe 1146 can be inserted into the end of the low-pressure side bypass pipe 1112; the end of the high-pressure side valve inlet flow channel 1135 can be inserted into the interior of the low-pressure side bypass pipe 1112.

[0087] The high-pressure housing 11b also has a high-pressure side sensor interface 1138, which is formed by the upper end of the exhaust channel 1132. The high-pressure side sensor interface 1138 is provided in the exhaust channel 1132 for mounting and fixing the high-pressure side sensor 302 to collect the compressor exhaust temperature and pressure. The high-pressure side sensor interface 1138 is used to mount and fix the high-pressure side sensor, obtain the temperature and pressure of the refrigerant at the compressor suction port, and monitor the operating condition of the vehicle's thermal management system.

[0088] The high-pressure chamber includes an inner cavity 1139 and an outer cavity 1140. An insulating rib 1141 is provided between the inner cavity 1139 and the outer cavity 1140. The outer cavity 1140 is located outside the inner cavity 1139, and the insulating rib 1141 has a notch to allow communication between the inner cavity 1139 and the outer cavity 1140. An exhaust port connects to the inner cavity 1139. The insulating rib 1141 can be used to optimize the pressure and temperature of the refrigerant discharged from the compressor, thereby improving the operational stability of the compressor with this high-pressure housing 11b.

[0089] The isolation rib 1141 can be disposed on the inner side of the peripheral wall of the high-pressure chamber, forming an inner cavity 1139 on the inner side of the isolation rib 1141, and the space between the isolation rib 1141 and the interior of the high-pressure chamber forms an outer cavity 1140. The high-pressure housing 11b also has a high-pressure side refrigerant filling port 1142, and a high-pressure side connecting channel 1148 extends in the front-rear direction. The rear end of the high-pressure side connecting channel 1148 penetrates the inner wall of the exhaust channel 1132, and the front end penetrates and forms the high-pressure side refrigerant filling port 1142. That is, the exhaust channel 1132 extends in a straight line, and both ends of the exhaust channel 1132 extend in this straight line. One end (lower end) of the exhaust channel 1132 can be connected to the oil return port 1136, and the other end (upper end) of the exhaust channel 1132 penetrates to form the high-pressure side refrigerant filling port 1142. The high-pressure side refrigerant filling port 1142 can be equipped with a high-pressure side charging valve 304 to facilitate the injection of refrigerant into the high-pressure chamber through the high-pressure side refrigerant filling port 1142, and can also simplify the structure of the high-pressure housing 11b and simplify the manufacturing process of the high-pressure housing 11b.

[0090] like Figure 4 and Figure 5 According to an embodiment of the present invention, a thermal management device 100 includes: the aforementioned compressor, condenser 13 and evaporator 12. The condenser 13 is arranged along the axis of the compressor on the outside of the high-pressure chamber and is configured to heat the heat exchange medium by means of a refrigerant phase change. The evaporator 12 is arranged along the axis of the compressor on the outside of the low-pressure chamber 1101 and is configured to cool the heat exchange medium by means of a refrigerant phase change.

[0091] Specifically, the high-pressure chamber and low-pressure chamber 1101 are distributed along the axis of the compressor, which extends in a left-right direction. The condenser 13 is arranged along the axis outside the high-pressure chamber, and is configured to heat the heat exchange medium using a refrigerant phase change. The evaporator 12 is arranged along the axis outside the low-pressure chamber 1101, and is configured to cool the heat exchange medium using a refrigerant phase change. In other words, the compressor has a low-pressure chamber 1101 and a high-pressure chamber distributed along the axis, and has an intake side and an exhaust side opposite each other along the axis. The heat exchanger assembly includes an evaporator 12 and a condenser 13. The evaporator 12 is arranged on the intake side of the compressor and connects to the low-pressure chamber 1101, while the condenser 13 is arranged on the exhaust side of the compressor and connects to the high-pressure chamber. The compressor is located between the condenser 13 and the evaporator 12, and the compressor, condenser 13, and evaporator 12 are connected to form a refrigerant circulation loop. After being compressed by the compressor, the refrigerant flows into the condenser 13 for heat exchange. After heat exchange, the refrigerant flows out of the condenser 13 and into the evaporator 12 for a second heat exchange. After the second heat exchange, the refrigerant flows back into the compressor and is compressed again, re-entering a new cycle of cooling and heating. Compared to placing the condenser 13 and evaporator 12 on the same side of the compressor, placing them on opposite sides simplifies the assembly structure of the thermal management device 100, facilitates individual installation and disassembly of the condenser 13 and evaporator 12, reduces their size, and improves the integration of the thermal management device 100. Since the condenser 13 and evaporator 12 have different operating states and environments, their separate placement avoids mutual interference between their operating environments, such as temperature factors, thereby improving the operational stability of the thermal management device 100.

[0092] In this invention, the evaporator 12 may have a first heat exchange inlet 1201 and a first heat exchange outlet 1202, and the condenser 13 may have a second heat exchange inlet 1301 and a second heat exchange outlet 1302. Through liquid circulation, the evaporator 12 can provide low-temperature liquid to external parts to achieve refrigeration; the condenser 13 can provide high-temperature liquid to external parts to achieve heating. The heat exchange medium passing through the evaporator 12 and the condenser 13 can be introduced into the vehicle's heat exchange channels. For example, the heat exchange medium can be introduced into the vehicle's battery heat exchange path, engine heat exchange path, electronic control heat exchange path, outdoor heat exchanger path, and air conditioning path. The heat exchange medium can be water or other media. Taking the air conditioning path as an example, when the refrigerant output by the compressor passes through the condenser 13, it will condense and release heat. The condensation and heat release of the refrigerant can heat the heat exchange medium and heat the vehicle interior space when the heat exchange medium passes through the air conditioning path. When it passes through the evaporator 12, it will evaporate and absorb heat. The evaporation and heat absorption of the refrigerant can cool the heating medium and cool the vehicle interior space when the heat exchange medium passes through the air conditioning path.

[0093] In addition, the thermal management device 100 may also include a liquid receiver assembly 14 and a subcooler 15, etc.

[0094] The vehicle according to an embodiment of the present invention includes the aforementioned thermal management device 100; or includes the aforementioned compressor. By providing the aforementioned thermal management device 100 or compressor, thermal management of the vehicle can be conveniently achieved.

[0095] In the description of this 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0096] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0097] 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 mechanical connection or an electrical connection; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0098] 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.

[0099] 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.

[0100] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A low-pressure housing (11a) for a thermal management device (100), characterized in that, The low-pressure housing (11a) has a low-pressure chamber (1101), an intake channel (1102), a first evaporator interface (1103), a second evaporator interface (1104), a main valve interface (1105), and a low-pressure side valve inlet channel (1106). The low-pressure chamber (1101) is connected to the intake channel (1102), the intake channel (1102) is connected to the first evaporator interface (1103), the second evaporator interface (1104) is connected to the main valve interface (1105), and the main valve interface (1105) is connected to the low-pressure side valve inlet channel (1106). The first evaporator interface (1103) and the second evaporator interface (1104) are used to connect the evaporator (12), and the main valve interface (1105) is used to install a main throttle valve (16) that can adjust the flow rate between the low-pressure side valve inlet channel (1106) and the second evaporator interface (1104).

2. The low-pressure housing (11a) according to claim 1, characterized in that, The air intake channel (1102) is configured as a straight channel extending in a direction perpendicular to the axis of the low-pressure chamber (1101), and one end of the air intake channel (1102) is connected to the low-pressure chamber (1101).

3. The low-pressure housing (11a) according to claim 2, characterized in that, The first evaporator interface (1103) extends in a direction parallel to the axis and penetrates the side of the suction channel (1102); and / or, the low-pressure housing (11a) also has a low-pressure side refrigerant charging port (1107), the other end of the suction channel (1102) penetrates and forms the low-pressure side refrigerant charging port (1107); and / or, the low-pressure housing (11a) also has a low-pressure side sensor interface (1108), the low-pressure side sensor interface (1108) penetrates the side wall of the suction channel (1102).

4. The low-pressure housing (11a) according to claim 1, characterized in that, The low-pressure housing (11a) includes a low-pressure side valve inlet flow channel pipe disposed on the outer side of the peripheral wall of the low-pressure chamber (1101), the low-pressure side valve inlet flow channel (1106) is disposed on the low-pressure side valve inlet flow channel pipe, and the low-pressure side valve inlet flow channel pipe extends in a direction parallel to the axis of the low-pressure chamber (1101). Wherein, the outer peripheral surface of the flow channel pipe before the low-pressure side valve is connected to the outer peripheral surface of the peripheral wall of the low-pressure cavity (1101); or, a reinforcing rib (1113) is connected between the flow channel pipe before the low-pressure side valve and the peripheral wall of the low-pressure cavity (1101).

5. The low-pressure housing (11a) according to claim 1, characterized in that, The low-pressure housing (11a) further includes a low-pressure side connecting flow channel (1110), which extends in a direction perpendicular to the axis of the low-pressure chamber (1101) and connects the low-pressure side valve inlet flow channel (1106) and the main valve interface (1105). And / or, the second evaporator port (1104) is opposite to and communicates with the main valve port (1105) in a direction parallel to the axis of the low-pressure chamber (1101).

6. The low-pressure housing (11a) according to claim 1, characterized in that, The low-pressure housing (11a) further includes a low-pressure side bypass channel (1111), which is connected to the intake channel (1102).

7. The low-pressure housing (11a) according to claim 6, characterized in that, The low-pressure housing (11a) includes a low-pressure side bypass pipe (1112) disposed on the outer side of the peripheral wall of the low-pressure cavity (1101), the low-pressure side bypass channel (1111) is disposed on the low-pressure side bypass pipe (1112), and the low-pressure side bypass pipe (1112) extends in a direction parallel to the axis of the low-pressure cavity (1101); Wherein, the outer peripheral surface of the low-pressure side bypass pipe (1112) is connected to the outer peripheral surface of the peripheral wall of the low-pressure cavity (1101); or, a reinforcing rib (1113) is connected between the low-pressure side bypass pipe (1112) and the peripheral wall of the low-pressure cavity (1101).

8. The low-pressure housing (11a) according to claim 6, characterized in that, The low-pressure side bypass channel (1111), the low-pressure side valve inlet channel (1106), the main valve interface (1105), the first evaporator interface (1103), and the second evaporator interface (1104) are located on the same side of the low-pressure chamber (1101); Alternatively, the low-pressure side bypass channel (1111) is opposite to and communicates with the first evaporator interface (1103) along the axis of the low-pressure chamber (1101).

9. The low-pressure housing (11a) according to claim 1, characterized in that, The low-pressure housing (11a) also has an electrical control cavity (1114), the electrical control cavity (1114), the first evaporator interface (1103) and the second evaporator interface (1104) are located on the same side of the low-pressure cavity (1101) along the axis of the low-pressure cavity (1101), and the electrical control cavity (1114) and the low-pressure cavity (1101) are separated by a partition.

10. The low-pressure housing (11a) according to claim 9, characterized in that, The partition includes an end plate (1118) disposed at the end of the low-pressure cavity (1101) and an extension plate (1119) disposed on the outer side of the peripheral wall of the low-pressure cavity (1101). The electrical control cavity (1114) is disposed on the side of the partition away from the low-pressure cavity (1101).

11. The low-pressure housing (11a) according to claim 10, characterized in that, The end plate (1118) is provided with a motor wiring port (1115), which connects the electrical control cavity (1114) and the low-pressure cavity (1101); And / or, the extension plate (1119) is provided with a first mounting port (1116), the first mounting port (1116) being used to install a high-voltage connector (307); And / or, the extension plate (1119) is provided with a second mounting port (1117) for mounting a low-voltage connector (308); And / or, the side of the end plate (1118) facing away from the low-pressure cavity (1101) is provided with a heat dissipation surface (1120) for heat exchange with the power device.

12. A compressor, characterized in that, It includes a high-pressure housing (11b) and a low-pressure housing (11a) according to any one of claims 1-11, the low-pressure housing (11a) and the high-pressure housing (11b) being distributed and connected along the axis of the compressor, the high-pressure housing (11b) having a high-pressure chamber (1131).

13. A thermal management device (100), characterized in that, include: The compressor of claim 12; A condenser (13) is arranged along the axis of the compressor on the outside of the high-pressure chamber (1131), and the condenser (13) is configured to heat the heat exchange medium by means of a refrigerant phase change. An evaporator (12) is arranged along the axis of the compressor outside the low-pressure chamber (1101), and the evaporator (12) is configured to use a refrigerant phase change to refrigerate the heat exchange medium.

14. A vehicle, characterized in that, It includes the thermal management device (100) of claim 13; or includes the compressor of claim 12.

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