Drive pump, thermal management system, and vehicle

Abstract

The application discloses a kind of drive pump, heat management system and vehicle, belong to vehicle technical field, drive pump, including drive component and conveying component, drive component includes driving piece and wire harness, driving piece is electrically connected external component by wire harness;Conveying component is connected with driving piece, driving piece is used to drive conveying component to convey heat exchange medium, conveying component is internally provided with relatively independent wiring cavity and medium cavity, wire harness is worn in wiring cavity, heat exchange medium can flow through medium cavity, so that heat exchange medium and wire harness heat exchange.By being provided with relatively independent wiring cavity and medium cavity inside conveying component, let wire harness be worn in wiring cavity and heat exchange medium flow through medium cavity, so that heat exchange medium and wire harness can heat exchange, timely take away heat on wire harness, avoid wire harness to be damaged due to long-term in high temperature environment.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular, to a drive pump, a thermal management system, and a vehicle. Background Art

[0002] A vehicle thermal management system is used to ensure stable operation of a vehicle power system, a battery pack and a cockpit environment. By regulating the flow and temperature of media such as coolant and lubricating oil, it ensures that all key components work under optimal working conditions, which directly affects the power performance, energy consumption level and service life of the vehicle. In the medium delivery link of the system, as a core power component, a gear pump undertakes the important function of driving fluid circulation, while a motor is a key component that provides operating power for the gear pump, and its operation stability directly determines the reliability of the entire delivery link.

[0003] However, under actual working conditions, a gear pump motor will continuously generate a large amount of heat during high-speed operation. In addition, the layout of the thermal management system of some vehicle models is compact, and the heat dissipation space around the motor is limited, resulting in the motor body being in a high temperature environment for a long time. At present, the wire harnesses of the motor are generally led out directly from the motor housing. These wire harnesses not only need to transmit power and control signals, but also need to withstand the high temperature generated by the operation of the motor. Exposed to a high temperature environment for a long time, the insulating layer of the wire harness is prone to aging, cracking and other problems, which in turn causes faults such as wire harness short circuit and poor contact, which will not only lead to interruption or instability of motor power output, but also affect the normal operation of the entire vehicle thermal management system. Utility Model Content

[0004] Embodiments of the present application provide a drive pump, a thermal management system, and a vehicle, so as to at least partially solve the above technical problems.

[0005] To achieve the foregoing purposes, according to a first aspect of the present application, a drive pump is provided, comprising: a drive assembly, comprising a drive member and a wire harness, wherein the drive member is electrically connected to an external component via the wire harness; a delivery assembly connected to the drive member, wherein the drive member is configured to drive the delivery assembly to deliver a heat exchange medium, a relatively independent routing cavity and a medium cavity are arranged inside the delivery assembly, the wire harness passes through the routing cavity, and the heat exchange medium can flow through the medium cavity, so that heat exchange occurs between the heat exchange medium and the wire harness.

[0006] Optionally, the delivery assembly comprises: a transmission member connected to an output end of the drive assembly, wherein at least part of the transmission member is located in the medium cavity, and the drive assembly drives the heat exchange medium in the medium cavity to flow through the transmission member; A supporting component, wherein the medium cavity is formed in the supporting component, the transmission component is rotatably connected to the supporting component, and a ceramic layer is provided on the wall surface of the medium cavity facing the transmission component.

[0007] Optionally, the conveying assembly further includes a housing, which is provided with a first liquid port, a second liquid port, and a cable outlet; the support component is installed inside the housing, and the cable routing cavity is also opened in the support component, the cable routing cavity is connected to the cable outlet, and the two ends of the medium cavity are respectively connected to the first liquid port and the second liquid port, and the support component is used for heat transfer between the wire harness and the heat exchange medium.

[0008] Optionally, along the arrangement direction of the conveying assembly and the driving member, the supporting component sequentially includes: The first support member has a first chamber that communicates with the first liquid inlet; The second support member has a second chamber that communicates with the first chamber. The third support member has a third chamber that communicates with the second chamber and the second liquid outlet; The wiring cavity is located within the third support member; the medium cavity includes a first chamber, a second chamber, and a third chamber; the third support member is used for heat transfer between the wiring harness and the heat exchange medium; and / or, The first support member, the second support member, and the third support member are detachably connected.

[0009] Optionally, the transmission component includes a rotating shaft, a gear, and a gear ring. The rotating shaft is rotatably connected to the first support member and the third support member, respectively. The rotating shaft is connected to the output end of the driving member. The gear is sleeved on the rotating shaft and meshes with the gear ring. The gear and the gear ring are disposed in the second chamber. The first support member has a first limiting surface, and the third support member has a second limiting surface. Along the arrangement direction of the first support member and the third support member, the first limiting surface and the second limiting surface are respectively located at both ends of the gear and the gear ring, and are used to limit the gear and the gear ring axially. The inner wall of the second support member is used to limit the gear ring radially. The first limiting surface, the second limiting surface, and the inner wall of the second support member are respectively provided with a first ceramic layer, a second ceramic layer, and a third ceramic layer.

[0010] Optionally, along the arrangement direction of the first support member and the third support member, the dimensions of the gear and the gear ring are 0.005 mm to 0.02 mm smaller than the dimensions of the second support member; and / or, The teeth of the gear and the gear ring are cycloidal teeth, and the center distance between the gear and the gear ring is between 1.6 mm and 2.4 mm; and / or, The thickness of at least one of the first ceramic layer, the second ceramic layer, and the third ceramic layer is between 0.2 mm and 0.5 mm; and / or, The first support member has a first groove on the side facing the gear and the gear ring for setting the first ceramic layer, the first ceramic layer protruding 0.005mm to 0.025mm from the first groove. The third support member has a second groove on the side facing the gear and the gear ring for setting the second ceramic layer, the second ceramic layer protruding 0.005mm to 0.025mm from the second groove. The minimum distance between the first ceramic layer and the second ceramic layer is 0.003mm to 0.012mm larger than the dimensions of the gear and the gear ring along the height direction of the housing; and / or, The outer diameters of the first ceramic layer and the second ceramic layer are 4mm to 6mm larger than the outer diameter of the gear ring.

[0011] Optionally, the drive pump further includes a pipe connector, one end of which is detachably and sealingly connected to the first liquid port or the second liquid port, and the other end of which is used to connect to an external pipeline.

[0012] Optionally, the drive pump further includes a terminal block sealed to the outlet, the terminal block being electrically connected to the wiring harness.

[0013] Optionally, the drive pump further includes a connector, the connector having a wiring channel for the wire harness to pass through, the wiring channel communicating with the wiring cavity; One end of the connector is sealed to the drive assembly; and / or The other end of the connector is sealed to the conveying assembly; and / or, The drive assembly, the conveying assembly, and the connector are detachably connected; and / or, The drive assembly and / or the conveying assembly are provided with a first positioning part, and the connector is provided with a second positioning part that engages with the first positioning part.

[0014] According to a second aspect of this application, a thermal management system is provided, including the drive pump described above.

[0015] According to a third aspect of this application, a vehicle is also provided, including the aforementioned drive pump or the aforementioned thermal management system.

[0016] In the drive pump of this application embodiment, by setting relatively independent wiring chamber and medium chamber inside the delivery component, the wire harness passes through the wiring chamber and the heat exchange medium flows through the medium chamber, so that the heat exchange medium and the wire harness can exchange heat, and the heat on the wire harness can be removed in time. This avoids the problem of insulation layer aging and cracking of the wire harness due to long-term exposure to high temperature environment, thereby reducing the occurrence of faults such as wire harness short circuit and poor contact, ensuring the stability of the power output of the drive component, and thus ensuring the normal operation of the entire drive pump and even the vehicle thermal management system.

[0017] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0019] Figure 1 This is a schematic diagram of the structure of a first cross-section of a drive pump provided in an exemplary embodiment of this application; Figure 2 yes Figure 1 The structural schematic diagram of the second cross-section of the drive pump provided in the diagram; Figure 3 yes Figure 2 The exploded view of the second cross-section of the drive pump provided in the image; Figure 4 yes Figure 3 Exploded view of the first part of the structure of the second cross section of the drive pump provided in the image; Figure 5 yes Figure 3 Exploded view of the second part of the structure of the second section of the drive pump provided in the image; Figure 6 yes Figure 3 The exploded view of the third part of the second cross-section of the drive pump provided in the image; Figure 7 This is a schematic diagram of the structure of a second type of drive pump provided in an exemplary embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 1. Drive components; 11. Drive elements; 12. Control elements; 13. Wiring harness; 2. Conveying components; 21. Housing; 211. First liquid inlet; 212. Second liquid inlet; 213. Outlet; 22. Supporting components; 221. First support member; 2211. First chamber; 2212. First ceramic layer; 222, Second support member; 2221, Second chamber; 2222, Third ceramic layer; 223. Third support component; 2231. Third chamber; 2232. Wiring cavity; 2233. Second ceramic layer; 23. Shaft; 24. Gear; 25. Gear ring; 26. First locating pin; 27. Second locating pin; 28. First locating part; 29. ​​Medium cavity; 3. Pipe fittings; 4. Wiring terminals; 5. Connector; 51. Cable routing channel; 52. Second positioning part. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0022] According to the first aspect of this application, referring to Figure 1 and Figure 2 This application provides a drive pump, including a drive assembly 1 and a delivery assembly 2. The drive assembly 1 includes a drive element 11 and a wiring harness 13. The drive element 11 is electrically connected to an external component through the wiring harness 13. The delivery assembly 2 is connected to the drive element 11. The drive element 11 is used to drive the delivery assembly 2 to deliver the heat exchange medium. The delivery assembly 2 is provided with relatively independent wiring cavity 2232 and medium cavity 29. The wiring harness 13 passes through the wiring cavity 2232. The heat exchange medium can flow through the medium cavity 29, so that the heat exchange medium and the wiring harness 13 exchange heat.

[0023] It is understood that the drive component 11 can be a motor for providing power, and the drive assembly 1 can also be equipped with a control component 12, which can be a controller for receiving signals and issuing commands. The wire harness 13 can be a wire harness 13 composed of multiple wires and an insulation layer. The conveying assembly 2 can be a gear 24 pump for conveying the heat exchange medium, which can be coolant or lubricating oil. The wiring cavity 2232 is an independent space for accommodating the wire harness 13, and the medium cavity 29 is an independent space for allowing the heat exchange medium to flow.

[0024] When the drive pump is working, the wiring harness 13 connects to external devices and transmits power to the control unit 12. At the same time, signals are transmitted between the control unit 12 and the external devices. The control unit 12 sends control commands to the drive unit 11 based on the received signals. After receiving the commands, the drive unit 11 starts to operate and drives the conveying assembly 2 to work. The heat exchange medium in the medium cavity 29 inside the conveying assembly 2 flows continuously, and at the same time, the wiring harness 13 in the wiring cavity 2232 exchanges heat with the heat exchange medium in the medium cavity 29.

[0025] In some embodiments, by setting relatively independent wiring cavities 2232 and medium cavities 29 inside the conveying assembly 2, the wire harness 13 is passed through the wiring cavity 2232 and the heat exchange medium flows through the medium cavity 29, so that the heat exchange medium and the wire harness 13 can exchange heat and remove the heat on the wire harness 13 in time. The wire harness 13 is routed through the wiring cavity 2232 on the conveying assembly 2, that is, the wire harness 13 is routed away from the drive component 11, so as to avoid the problem of insulation aging and cracking of the wire harness 13 due to long-term exposure to high temperature environment, thereby reducing the occurrence of faults such as short circuit and poor contact of the wire harness 13, ensuring the stability of the power output of the drive component 11, and thus ensuring the normal operation of the entire drive pump and even the vehicle thermal management system.

[0026] Reference Figure 1 and Figure 2 In some embodiments, the conveying assembly 2 includes a transmission component and a support component 22. The transmission component is connected to the output end of the drive assembly 1. The transmission component is at least partially located in the medium cavity 29. The drive assembly 1 drives the heat exchange medium in the medium cavity 29 to flow through the transmission component. The medium cavity 29 is opened in the support component 22. The transmission component is rotatably connected to the support component 22. A ceramic layer is provided on the wall of the medium cavity 29 facing the transmission component.

[0027] It is understandable that the heat exchange medium is transported through the transmission components. The high wear resistance of the ceramic layer reduces the friction loss between the transmission components and the wall of the medium cavity 29 when the transmission components rotate, extends the service life of the support components 22 and the transmission components, and at the same time ensures the sealing of the medium cavity 29, prevents medium leakage caused by wear, and ensures stable flow of the heat exchange medium and effective heat exchange with the wire harness 13.

[0028] Reference Figure 1 and Figure 2 In some embodiments, the conveying assembly 2 further includes a housing 21, which is provided with a first liquid port 211, a second liquid port 212 and a cable outlet 213; a support member 22 is installed inside the housing 21, and a cable routing cavity 2232 is also opened in the support member 22. The cable routing cavity 2232 is connected to the cable outlet 213. The two ends of the medium cavity 29 are respectively connected to the first liquid port 211 and the second liquid port 212. The support member 22 is used for heat transfer between the wire harness 13 and the heat exchange medium.

[0029] It is understood that the housing 21 is used to accommodate and install the support component 22, which may be a cylindrical member used to divide space. The first liquid port 211 and the second liquid port 212 may be circular interfaces formed on the housing 21 for the inlet and outlet of the heat exchange medium. The cable outlet 213 may be a hole-like structure formed on the housing 21 for the cable harness 13 to pass through and connect to external devices.

[0030] When the drive pump is running, the heat exchange medium enters the medium cavity 29 on the support component 22 from the first liquid port 211 of the housing 21, flows through the medium cavity 29 and flows out from the second liquid port 212. At the same time, the support component 22 transfers the heat of the wire harness 13 to the heat exchange medium in the medium cavity 29, or absorbs the heat of the wire harness 13 through the heat exchange medium in the medium cavity 29.

[0031] In some embodiments, by opening the wiring cavity 2232 and the medium cavity 29 on the support member 22 and installing the support member 22 inside the housing 21, and by connecting the wiring cavity 2232 to the outlet 213 and the medium cavity 29 to the first liquid port 211 and the second liquid port 212, the support member 22 can simultaneously separate the wire harness 13 from the heat exchange medium and guide their paths. The heat transfer through the support member 22 ensures the heat exchange between the wire harness 13 and the heat exchange medium and prevents the wire harness 13 from being damaged due to high temperature aging.

[0032] Reference Figure 1 and Figure 2 In some embodiments, along the arrangement direction of the conveying assembly 2 and the driving member 11, the support member 22 sequentially includes a first support member 221, a second support member 222, and a third support member 223. The first support member 221 has a first chamber 2211 communicating with the first liquid port 211; the second support member 222 has a second chamber 2221 communicating with the first chamber 2211; and the third support member 223 has a third chamber 2231 communicating with the second chamber 2221 and the second liquid port 212. The wiring cavity 2232 is opened in the third support member 223, and the medium cavity 29 includes the first chamber 2211, the second chamber 2221, and the third chamber 2231. The third support member 223 is used for heat transfer between the wire harness 13 and the heat exchange medium.

[0033] It is understood that the first support member 221, the second support member 222, and the third support member 223 are stacked in a ring structure along the arrangement of the conveying assembly 2 and the driving member 11 (in the height direction of the housing 21). The third support member 223 can be made of thermally conductive metal. The first chamber 2211, the second chamber 2221, and the third chamber 2231 can be channel structures respectively opened on the first support member 221, the second support member 222, and the third support member 223 for the flow of heat exchange medium. The size and shape of the first chamber 2211, the second chamber 2221, and the third chamber 2231 can be designed according to the flow requirements of the heat exchange medium.

[0034] When the pump is running, the heat exchange medium enters the first chamber 2211 of the first support member 221 from the first liquid port 211 of the housing 21, and then flows from the first chamber 2211 into the second chamber 2221 of the second support member 222. After the heat exchange medium flows through the second chamber 2221, it continues to flow into the third chamber 2231 of the third support member 223, and finally flows out from the third chamber 2231 through the second liquid port 212 of the housing 21. At the same time, the third support member 223 transfers the heat of the wire harness 13 in the wiring cavity 2232 to the heat exchange medium flowing through the third chamber 2231.

[0035] In some embodiments, the support component 22 is divided into a first support 221, a second support 222 and a third support 223 along the height direction of the housing 21, and the medium cavity 29 is divided into a first chamber 2211, a second chamber 2221 and a third chamber 2231 that are interconnected. A wiring cavity 2232 is opened in the third support 223. The segmented structure design facilitates the disassembly manufacturing of the support component 22 and its subsequent maintenance and replacement.

[0036] In some examples, refer to Figure 3 and Figure 4 The first support member 221, the second support member 222, and the third support member 223 are detachably connected.

[0037] It is understood that the first support member 221, the second support member 222, and the third support member 223 are each provided with mounting holes. The mounting holes on the first support member 221 are threaded holes, the mounting holes on the second support member 222 are plain holes, and the mounting holes on the third support member 223 are countersunk holes. Bolts are installed in the mounting holes. One end of the bolt is threaded into the threaded hole of the first support member 221, and the head of the other end of the bolt is limited by the countersunk hole of the third support member 223. The first support member 221, the second support member 222, and the third support member 223 are detachably connected by bolts. In practical applications, the setting of bolts and mounting holes can be flexibly set according to needs, or the connection can be achieved by snap-fit ​​and slot engagement.

[0038] In some embodiments, by making the first support member 221, the second support member 222 and the third support member 223 detachably connected, when a support member is damaged (such as a chamber blockage or structural damage), it is not necessary to replace the entire support component 22. Only the faulty support member needs to be disassembled and replaced, which reduces maintenance costs and also facilitates the separate processing of different support members during the production process, thereby improving manufacturing efficiency.

[0039] In some examples, refer to Figure 7 The support component 22 includes only a first support member 221 and a third support member 223. The first support member 221 has a first chamber 2211 that communicates with the first liquid port 211. The third support member 223 has a third chamber 2231 that communicates with the first chamber 2211 and the second liquid port 212. The wiring cavity 2232 is opened in the third support member 223. The medium cavity 29 includes the first chamber 2211 and the third chamber 2231. The third support member 223 is used for heat transfer between the wire harness 13 and the heat exchange medium.

[0040] It is understood that combining the first support member 221 and the second support member 222 in the aforementioned embodiments constitutes the first support member 221 of this embodiment. Similarly, the first support member 221 and the third support member 223 are detachably connected.

[0041] In some examples, refer to Figure 1 and Figure 4 The conveying assembly 2 also includes a first positioning pin 26 and / or a second positioning pin 27. The first positioning pin 26 is inserted into the first support member 221 and the second support member 222; the second positioning pin 27 is inserted into the second support member 222 and the third support member 223.

[0042] In some embodiments, by setting a first positioning pin 26 and / or a second positioning pin 27 in the conveying assembly 2, the first positioning pin 26 is inserted into the first support member 221 and the second support member 222, and the second positioning pin 27 is inserted into the second support member 222 and the third support member 223, positioning the relative positions of adjacent support members, preventing misalignment of the first chamber 2211, the second chamber 2221, and the third chamber 2231 during assembly, which would lead to poor flow of the heat exchange medium. At the same time, it enhances the overall stability of the first support member 221, the second support member 222, and the third support member 223 after connection, reduces the offset of the support members caused by vibration during the operation of the drive pump, ensures the sealing of the medium chamber 29 and the stability of the heat exchange medium delivery, and thus maintains the efficient heat exchange between the wire harness 13 and the heat exchange medium.

[0043] In some examples, refer to Figure 1 and Figure 4 The conveying assembly 2 also includes a sealing ring, which is sealed between the second support member 222 and the housing 21.

[0044] In some embodiments, by providing a sealing ring in the conveying assembly 2 and sealing the sealing ring between the second support member 222 and the housing 21, the assembly gap between the second support member 222 and the housing 21 is filled, preventing the heat exchange medium from leaking from the gap, and ensuring the sealing performance of the conveying assembly 2 and the stable operation of the drive pump.

[0045] Reference Figure 1 and Figure 5 In some embodiments, the transmission component further includes a rotating shaft 23, a gear 24, and a gear ring 25. The rotating shaft 23 is rotatably connected to the first support member 221 and the third support member 223, respectively, and is connected to the output end of the drive member 11. The gear 24 is sleeved on the rotating shaft 23 and meshes with the gear ring 25. The gear 24 and the gear ring 25 are disposed in the second chamber 2221. The first support member 221 has a first limiting surface, and the third support member 223 has a second limiting surface. Along the arrangement direction of the first support member 221 and the third support member 223, the first limiting surface and the second limiting surface are located at the two ends of the gear 24 and the gear ring 25, respectively, for axial limiting of the gear 24 and the gear ring 25. The inner wall of the second support member 222 is used for radial limiting of the gear ring 25. The first limiting surface, the second limiting surface, and the inner wall of the second support member 222 are respectively provided with a first ceramic layer 2212, a second ceramic layer 2233, and a third ceramic layer 2222.

[0046] Understandably, the rotating shaft 23 is connected to the output shaft of the drive component 11 via a coupling to transmit power to the drive component 11. The gear 24 can be a cylindrical structure with teeth on its outer circumference, and the gear ring 25 can be a ring-shaped structure with teeth on its inner circumference that mates with the gear 24. The ceramic layer can be a ceramic material coating with high wear resistance formed by spraying or sintering processes.

[0047] When the pump is running, the output end of the drive component 11 drives the rotating shaft 23 to rotate, the rotating shaft 23 drives the gear 24 to rotate, and the gear 24 drives the gear ring 25 to rotate. During the rotation of the gear 24 and the gear ring 25, the first limiting surface restricts the gear 24 and the gear ring 25 to move axially towards the first support component 221, the second limiting surface restricts the gear 24 and the gear ring 25 to move axially towards the third support component 223, and the inner wall of the second support component 222 restricts the gear ring 25 to shift radially. At the same time, the first ceramic layer 2212, the second ceramic layer 2233, and the third ceramic layer 2222 reduce the frictional loss between each limiting surface and the gear 24 and the gear ring 25.

[0048] In some embodiments, the rotating shaft 23, gear 24, and gear ring 25 are configured to limit the movement of the gears by cooperating with the first limiting surface, the second limiting surface, and the inner wall of the second support member 222. A ceramic layer is provided on the limiting surface and the inner wall to ensure stable operation of the gears 24 and gear ring 25 in the second chamber 2221, reduce component wear caused by friction, allow the use of R134a with lower viscosity as the heat exchange medium, and effectively reduce the risk of medium leakage. This enables the conveying assembly 2 to maintain a volumetric efficiency of more than 80% and ensures stable delivery of the heat exchange medium.

[0049] Reference Figure 1 and Figure 2 In some embodiments, along the arrangement direction of the first support member 221 and the third support member 223, the dimensions of the gear 24 and the gear ring 25 are 0.005 mm to 0.02 mm smaller than the dimensions of the second support member 222.

[0050] In some embodiments, by setting the dimensions of gear 24 and gear ring 25 to be 0.005mm to 0.02mm smaller than the dimensions of the second support member 222, a reasonable clearance can be reserved for the rotation of gear 24 and gear ring 25, avoiding jamming between gear 24, gear ring 25 and the second support member 222 due to excessive size, thus ensuring smooth operation of both. At the same time, by controlling the size of the clearance, the amount of heat exchange medium flowing through the second chamber 2221 that leaks from the clearance can be reduced. If low viscosity R134a is used, the volumetric efficiency of the conveying assembly 2 can be further maintained, ensuring the effective delivery of the heat exchange medium.

[0051] In some examples, refer to Figure 1 and Figure 3 The teeth of gear 24 and gear ring 25 are cycloidal teeth, and the center distance between gear 24 and gear ring 25 is between 1.6mm and 2.4mm.

[0052] In some embodiments, by setting the teeth of gear 24 and gear ring 25 as cycloidal teeth and controlling the center distance between them to be between 1.6mm and 2.4mm, the tooth profile characteristics of cycloidal teeth can reduce the impact and wear when gear 24 and gear ring 25 mesh, and improve transmission stability. The center distance range of 1.6mm to 2.4mm can adapt to the meshing requirements of cycloidal teeth, ensuring precise meshing between the two to reduce media leakage. At the same time, combined with the high-efficiency transmission characteristics of cycloidal teeth, the volumetric efficiency of the conveying component 2 when conveying low-viscosity media such as R134a is further guaranteed, and the stable conveying capacity of the drive pump is maintained.

[0053] In some examples, refer to Figure 1 and Figure 5 The thickness of at least one of the first ceramic layer 2212, the second ceramic layer 2233, and the third ceramic layer 2222 is between 0.2 mm and 0.5 mm.

[0054] In some embodiments, by controlling the thickness of at least one of the first ceramic layer 2212, the second ceramic layer 2233, and the third ceramic layer 2222 to be between 0.2 mm and 0.5 mm, this thickness range can ensure that the ceramic layer has sufficient hardness and wear resistance to effectively resist frictional loss between the gear 24, the gear ring 25 and the limiting surface and the inner wall of the second support member 222, thus extending the service life of the component. It can also prevent the risk of cracking and falling off due to excessive thickness of the ceramic layer, while not excessively increasing the overall volume of the support member, thus ensuring the compactness of the internal structure of the conveying component 2.

[0055] In some examples, refer to Figure 1 and Figure 5 The first support member 221 has a first groove on the side facing the gear 24 and the gear ring 25 for setting the first ceramic layer 2212. The first ceramic layer 2212 protrudes from the first groove by 0.005mm to 0.025mm. The third support member 223 has a second groove on the side facing the gear 24 and the gear ring 25 for setting the second ceramic layer 2233. The second ceramic layer 2233 protrudes from the second groove by 0.005mm to 0.025mm. The minimum distance between the first ceramic layer 2212 and the second ceramic layer 2233 is 0.003mm to 0.012mm larger than the dimensions of the gear 24 and the gear ring 25 along the height direction of the housing 21.

[0056] In some embodiments, by making the first ceramic layer 2212 and the second ceramic layer 2233 protrude from the first groove and the second groove by 0.005mm to 0.025mm respectively, and making the minimum distance between them 0.003mm to 0.012mm larger than the dimensions of the gear 24 and the gear ring 25 along the height direction of the housing 21, the protruding ceramic layer can preferentially contact the gear 24 and the gear ring 25, avoiding direct wear of the support body. The reasonable spacing design can not only reserve space for the axial movement of the gear 24 and the gear ring 25 to prevent jamming during operation, but also reduce the gap to reduce heat exchange medium leakage. Especially when conveying low viscosity media such as R134a, it can further ensure the volumetric efficiency of the conveying component 2, while extending the service life of the support and transmission components.

[0057] In some examples, refer to Figure 1 and Figure 5 The outer diameters of the first ceramic layer 2212 and the second ceramic layer 2233 are 4mm to 6mm larger than the outer diameter of the gear ring 25.

[0058] In some embodiments, by setting the outer diameter of the first ceramic layer 2212 and the second ceramic layer 2233 to be 4mm to 6mm larger than the outer diameter of the gear ring 25, the ceramic layers can completely cover the two end faces of the gear ring 25 in the radial direction. This ensures that during operation, the contact area between the end face of the gear ring 25 and the limiting surface is always within the protection range of the ceramic layers, preventing the gear ring 25 from directly rubbing against the first and second limiting surfaces and causing wear on the support component. At the same time, this dimensional difference will not excessively occupy the internal space of the conveying assembly 2, which can be adapted to a compact structural layout, further extending the service life of the support component and the gear ring 25, and ensuring transmission stability.

[0059] Reference Figure 1 and Figure 5 In some embodiments, the drive pump further includes a pipe connector 3, one end of which is detachably and sealed to the first liquid port 211 or the second liquid port 212, and the other end of which is used to connect to an external pipeline.

[0060] It is understood that the pipe fitting 3 includes a connecting pipe, a sealing element fitted onto the connecting pipe, and a connecting flange connected to the connecting pipe. The connecting pipe can be inserted into the first liquid port 211 or the second liquid port 212. The connecting pipe is sealed to the first liquid port 211 or the second liquid port 212 through the sealing element. The connecting flange is connected to the housing 21 by screws.

[0061] In some embodiments, by providing a pipe connector 3 with one end detachably and sealed to the first liquid port 211 or the second liquid port 212 and the other end connected to an external pipeline, the detachable structure facilitates the individual disassembly and maintenance of the drive pump, while the sealed connection prevents leakage of the heat exchange medium at the interface, ensuring the sealing and stability of the medium delivery in the heat management system. Furthermore, different specifications of pipe connectors 3 can be replaced according to usage requirements, thus expanding the application range of the drive pump.

[0062] Reference Figure 1 and Figure 5 In some embodiments, the drive pump also includes a terminal 4 sealed to the outlet 213, the terminal 4 being electrically connected to the wiring harness 13.

[0063] In some embodiments, by sealing and connecting the terminal 4 at the outlet 213 and electrically connecting the terminal 4 to the wire harness 13, the wire harness 13 can be stably connected to the external circuit through the terminal 4. The sealing structure isolates external impurities from the inside of the conveying component 2, preventing impurities from affecting the purity of the heat exchange medium or damaging internal components, while ensuring the stability of signal transmission and power supply of the wire harness 13.

[0064] Reference Figure 1 and Figure 6In some embodiments, the drive pump further includes a connector 5, which has a wiring channel 51 for the wire harness 13 to pass through, and the wiring channel 51 communicates with the wiring cavity 2232; one end of the connector 5 is sealed to the drive assembly 1; and / or, the other end of the connector 5 is sealed to the delivery assembly 2.

[0065] It is understandable that the wiring channel 51 on the connector 5 is a hole-like structure that passes through the connector 5. The connector 5 includes a first connecting part and a second connecting part. The first connecting part extends into the housing of the drive assembly 1, and a sealing ring is provided between the walls. The second connecting part extends into the housing 21, and a sealing ring is also provided between the walls.

[0066] In some embodiments, by providing a connector 5 with a wiring channel 51, and sealing one end of the connector 5 with the drive assembly 1 and the wiring channel 51 communicating with the wiring cavity 2232, a closed transmission path is provided for the wire harness 13 from the drive assembly 1 to the wiring cavity 2232, preventing the wire harness 13 from being exposed and damaged. At the same time, the sealed connection can prevent external dust and moisture from entering the drive assembly 1 and the transmission assembly 2 through the gaps in the wire harness 13, ensuring the safety of the internal circuit of the drive assembly 1, maintaining the stability of the signal and power transmission of the wire harness 13, and ensuring the stable operation of the transmission assembly 2.

[0067] In some examples, refer to Figure 1 and Figure 3 The drive assembly 1, the conveying assembly 2, and the connector 5 are detachably connected.

[0068] It is understood that the connector 5 includes a first connecting part, a second connecting part, and a connecting flange, which is detachably connected to the drive assembly 1 and the conveying assembly 2 by bolts.

[0069] In some embodiments, the drive assembly 1, the conveying assembly 2, and the connector 5 are configured to be detachably connected. This reduces maintenance difficulty. When a component malfunctions (such as damage to the control component 12 of the drive assembly 1 or wear of the gear 24 of the conveying assembly 2), the faulty component can be replaced individually by disassembling the corresponding connection, without replacing the entire drive pump. This reduces maintenance costs and time, and also facilitates separate processing of the three components during production, improving production efficiency.

[0070] In some examples, refer to Figure 1 and Figure 4 The drive assembly 1 and / or the conveying assembly 2 are provided with a first positioning part 28, and the connector 5 is provided with a second positioning part 52 that engages with the first positioning part 28.

[0071] In some embodiments, by providing a first positioning part 28 in the drive assembly 1 and / or the conveying assembly 2, and providing a second positioning part 52 in the connector 5 that engages with the first positioning part 28, the relative positions of the three components can be quickly determined by the engagement of the first positioning part 28 and the second positioning part 52 when assembling the drive assembly 1, the conveying assembly 2 and the connector 5, thus avoiding misalignment during assembly, improving assembly accuracy and efficiency. At the same time, the engagement structure can also help enhance the stability of the connection after the three components are connected, reduce connection loosening caused by vibration during the operation of the drive pump, and ensure the stability of the wiring path of the wiring harness 13 and the smooth delivery of the heat exchange medium.

[0072] According to a second aspect of this application, a thermal management system is provided, including the aforementioned drive pump. This thermal management system has all the beneficial effects of the aforementioned drive pump, which will not be elaborated further here.

[0073] In some examples, thermal management systems mainly include three operating modes: Compressor mode: When the ambient temperature is >25℃, the compressor operates at medium to high speed, and the drive pump is turned off. In this mode, the system mainly relies on the compressor to meet cooling / heat dissipation needs.

[0074] Hybrid mode: When the ambient temperature is between 10℃ and 25℃, the compressor operates at a low speed while the drive pump is turned on. Through the coordinated work of the compressor and drive pump, energy consumption and heat dissipation efficiency are balanced.

[0075] Natural cooling mode for the drive pump: When the ambient temperature is <10℃, the compressor shuts off, and only the drive pump operates. Utilizing the low-temperature environment combined with the media delivery via the drive pump, natural cooling / heat dissipation is achieved, saving energy.

[0076] According to a third aspect of this application, a vehicle is provided that includes the aforementioned drive pump or thermal management system, the vehicle having all the beneficial effects of the aforementioned drive pump or thermal management system, which will not be elaborated further herein.

[0077] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions.

[0078] In the description of this application, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0080] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0081] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A drive pump, characterized in that, include: A drive assembly includes a drive element and a wiring harness, wherein the drive element is electrically connected to an external component via the wiring harness; A conveying assembly is connected to the driving component. The driving component is used to drive the conveying assembly to convey the heat exchange medium. The conveying assembly has relatively independent wiring cavity and medium cavity. The wire harness passes through the wiring cavity. The heat exchange medium can flow through the medium cavity to exchange heat with the wire harness.

2. The drive pump according to claim 1, characterized in that, The conveying assembly includes: A transmission component is connected to the output end of the drive assembly. The transmission component is at least partially located in the medium cavity. The drive assembly drives the heat exchange medium in the medium cavity to flow through the transmission component. A supporting component, wherein the medium cavity is formed in the supporting component, the transmission component is rotatably connected to the supporting component, and a ceramic layer is provided on the wall surface of the medium cavity facing the transmission component.

3. The drive pump according to claim 2, characterized in that, The conveying assembly further includes a housing, which is provided with a first liquid port, a second liquid port, and a cable outlet; the support component is installed inside the housing, and the cable routing cavity is also opened in the support component. The cable routing cavity is connected to the cable outlet, and the two ends of the medium cavity are respectively connected to the first liquid port and the second liquid port. The support component is used for heat transfer between the wire harness and the heat exchange medium.

4. The drive pump according to claim 3, characterized in that, Along the arrangement direction of the conveying assembly and the driving component, the supporting component sequentially includes: The first support member has a first chamber that communicates with the first liquid inlet; The second support member has a second chamber that communicates with the first chamber. The third support member has a third chamber that communicates with the second chamber and the second liquid outlet; The wiring cavity is located within the third support member; the medium cavity includes the first chamber, the second chamber, and the third chamber; the third support member is used for heat transfer between the wiring harness and the heat exchange medium; and / or, The first support member, the second support member, and the third support member are detachably connected.

5. The drive pump according to claim 4, characterized in that, The transmission component includes a rotating shaft, a gear, and a gear ring. The rotating shaft is rotatably connected to the first support member and the third support member, respectively. The rotating shaft is connected to the output end of the driving member. The gear is sleeved on the rotating shaft and meshes with the gear ring. The gear and the gear ring are disposed in the second chamber. The first support member has a first limiting surface, and the third support member has a second limiting surface. Along the arrangement direction of the first support member and the third support member, the first limiting surface and the second limiting surface are respectively located at both ends of the gear and the gear ring, and are used to limit the gear and the gear ring axially. The inner wall of the second support member is used to limit the gear ring radially. The first limiting surface, the second limiting surface, and the inner wall of the second support member are respectively provided with a first ceramic layer, a second ceramic layer, and a third ceramic layer.

6. The drive pump according to claim 5, characterized in that, Along the arrangement direction of the first and third supports, the dimensions of the gear and the gear ring are 0.005 mm to 0.02 mm smaller than the dimensions of the second support; and / or, The teeth of the gear and the gear ring are cycloidal teeth, and the center distance between the gear and the gear ring is between 1.6 mm and 2.4 mm; and / or, The thickness of at least one of the first ceramic layer, the second ceramic layer, and the third ceramic layer is between 0.2 mm and 0.5 mm; and / or, The first support member has a first groove on the side facing the gear and the gear ring for setting the first ceramic layer, the first ceramic layer protruding 0.005mm to 0.025mm from the first groove. The third support member has a second groove on the side facing the gear and the gear ring for setting the second ceramic layer, the second ceramic layer protruding 0.005mm to 0.025mm from the second groove. The minimum distance between the first ceramic layer and the second ceramic layer is 0.003mm to 0.012mm larger than the dimensions of the gear and the gear ring along the height direction of the housing; and / or, The outer diameters of the first ceramic layer and the second ceramic layer are 4mm to 6mm larger than the outer diameter of the gear ring.

7. The drive pump according to claim 3, characterized in that, The drive pump also includes: A pipe fitting, one end of which is detachably and sealingly connected to the first liquid port or the second liquid port, and the other end of which is used to connect to an external pipeline; and / or, A terminal block is sealed and connected to the outlet, and the terminal block is electrically connected to the wire harness.

8. The drive pump according to any one of claims 1-7, characterized in that, The drive pump also includes a connector, which has a wiring channel for the wire harness to pass through, and the wiring channel is in communication with the wiring cavity; One end of the connector is sealed to the drive assembly; and / or The other end of the connector is sealed to the conveying assembly; and / or, The drive assembly, the conveying assembly, and the connector are detachably connected; and / or, The drive assembly and / or the conveying assembly are provided with a first positioning part, and the connector is provided with a second positioning part that engages with the first positioning part.

9. A thermal management system, characterized in that, The drive pump included in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the drive pump according to any one of claims 1-8 or the thermal management system according to claim 9.

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