Refrigerant pump, thermal management system and vehicle

Abstract

The invention provides a refrigerant pump, a heat management system and a vehicle, the refrigerant pump comprises a shell, a liquid inlet, a liquid outlet and a driving mechanism, a refrigerant channel is arranged in the shell, the liquid inlet and the liquid outlet are both arranged in the shell, the driving mechanism is used for driving a refrigerant to enter the shell from the liquid inlet and flow to the liquid outlet through the refrigerant channel, the driving mechanism comprises a stator, and the stator is arranged in the shell. The stator is arranged in the refrigerant channel. The stator is arranged in the refrigerant channel, so that the cooling efficiency of the stator can be improved, and the working efficiency of the refrigerant pump is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, specifically to a refrigerant pump, a thermal management system, and a vehicle. Background Technology

[0002] The refrigerant pump's drive mechanism drives a gear set to rotate via a transmission shaft, thereby driving the refrigerant to flow from the inlet to the outlet. The heat dissipation of the drive mechanism directly affects its working efficiency. In related technologies, insufficient cooling of the drive mechanism leads to a reduction in the efficiency of the refrigerant pump. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a refrigerant pump with high cooling efficiency to improve the working efficiency of refrigerant pumps.

[0004] The technical solution of the present invention is as follows:

[0005] A refrigerant pump, characterized in that it comprises: a housing, wherein a refrigerant channel is provided inside the housing; a liquid inlet, wherein the liquid inlet is disposed in the housing; a liquid outlet, wherein the liquid outlet is disposed in the housing; and a drive mechanism, wherein the drive mechanism is used to drive refrigerant to enter the housing from the liquid inlet and flow to the liquid outlet through the refrigerant channel, the drive mechanism including a stator disposed within the refrigerant channel.

[0006] By placing the stator within the refrigerant channel, the large amount of refrigerant entering the casing can efficiently cool the stator as it flows through the channel. This results in effective stator cooling, bringing it to a suitable operating temperature and improving the refrigerant pump's efficiency. Furthermore, the large volume of refrigerant cooling the stator minimizes temperature rise and reduces the likelihood of vaporization. Since the cooled refrigerant flows through the channel to the outlet, any minor vaporization is easily eliminated with the liquid refrigerant, minimizing its impact on the pump's compression function and reducing operating noise.

[0007] In some examples of this application, the stator is located between the inlet and the outlet along the axial direction of the refrigerant pump.

[0008] In some examples of this application, the refrigerant pump further includes a gear set having an inlet and an outlet, the inlet communicating with the liquid inlet, and the stator located on the side of the outlet away from the inlet.

[0009] In some examples of this application, the outlet is adapted to be higher than the inlet.

[0010] In some examples of this application, the outlet is adapted to be located at the highest point of the liquid level inside the housing.

[0011] In some examples of this application, the liquid inlet is located on the end face of the housing along the axial direction of the refrigerant pump, and the liquid outlet is located on the side of the housing.

[0012] In some examples of this application, the stator includes stator slots and windings disposed within the stator slots, and the refrigerant is adapted to flow through cavities within the stator slots to contact the refrigerant with the windings.

[0013] In some examples of this application, at least a portion of the stator outer wall surface is spaced apart from the inner wall of the housing.

[0014] In some examples of this application, an electronic control board is also included, which is attached to the housing, and the refrigerant is adapted to exchange heat with the electronic control board through the housing.

[0015] In some examples of this application, the electronic control board is located between the stator and the liquid outlet along the refrigerant flow direction.

[0016] In some examples of this application, the housing includes a partition that divides the housing into a first chamber and a second chamber, a refrigerant is adapted to flow in the first chamber, and an electronic control board is adapted to be disposed in the second chamber and attached to the partition.

[0017] In some examples of this application, the baffle is arranged perpendicular to the axial direction of the refrigerant pump.

[0018] In some examples of this application, the housing includes a housing body, a pump body, and an end cap. Along the axial direction of the refrigerant pump, the pump body is sealed between the housing body and the end cap. The pump body includes a receiving cavity for accommodating the gear set of the refrigerant pump.

[0019] In some examples of this application, the pump body includes a pump body portion and a fixing portion, the pump body portion including the receiving cavity, the fixing portion extending outward from the pump body portion, the fixing portion being adapted to be sealed to the end cap, and the fixing portion being adapted to be sealed to the housing body.

[0020] In some examples of this application, the fixing part includes a first flange and a second flange, which are respectively disposed at both axial ends of the pump body. The first flange is adapted to be sealed to the end cover, and the second flange is adapted to be sealed to the housing body.

[0021] In some examples of this application, the fixing part further includes a reinforcing part connected between the first flange and the second flange, the reinforcing part having a through hole, and fasteners adapted to pass through the first flange, the through hole and the second flange.

[0022] In some examples of this application, the end cap is provided with mounting holes, and fasteners are adapted to pass through the mounting holes, the first flange, and the second flange.

[0023] In some examples of this application, the housing body includes a third flange, and the second flange is adapted to be fixedly connected to the third flange.

[0024] In some examples of this application, the end cap is provided with a mounting hole, the housing body includes a third flange, and fasteners are adapted to pass through the mounting hole, the first flange, the second flange, and the third flange.

[0025] In some examples of this application, the fixing part includes a positioning part for positioning the connection between the fixing part and the end cap, and / or, the positioning part for positioning the connection between the fixing part and the housing body.

[0026] In some examples of this application, the pump body is a one-piece molded part.

[0027] In some examples of this application, the outer contour of the pump body projection along the axial direction of the refrigerant pump is a polygonal structure.

[0028] In some examples of this application, the outer contour of the projected pump body along the axial direction of the refrigerant pump is a regular polygonal structure.

[0029] In some examples of this application, the refrigerant pump further includes a drive shaft, the drive mechanism is adapted to drive the gear set to rotate via the drive shaft, and the refrigerant pump further includes a first bearing and a second bearing, with both ends of the drive shaft rotatably connected to the housing via the first bearing and the second bearing, respectively.

[0030] In some examples of this application, the drive shaft has a first end and a second end that are axially opposite each other, the first bearing is disposed at the first end, the second bearing is disposed at the second end, and the gear set is disposed on the side of the first bearing opposite to the second bearing.

[0031] In some examples of this application, the first bearing is a sliding bearing and the second bearing is a rolling bearing.

[0032] Secondly, a thermal management system is proposed, including the refrigerant pump as described above.

[0033] Thirdly, a vehicle is proposed that includes the aforementioned refrigerant pump or the aforementioned thermal management system.

[0034] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0036] Figure 1 This is a schematic diagram of the first structure of a refrigerant pump according to an exemplary embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of the second structure of the refrigerant pump according to an exemplary embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of the stator structure of a refrigerant pump according to an exemplary embodiment of the present invention.

[0039] Figure 4 This is a schematic diagram of the third structure of the refrigerant pump according to an exemplary embodiment of the present invention.

[0040] Figure 5 This is a partial structural diagram of a refrigerant pump according to an exemplary embodiment of the present invention.

[0041] Figure 6 This is a schematic diagram of the fourth structure of the refrigerant pump according to an exemplary embodiment of the present invention.

[0042] Figure 7 This is a schematic diagram of the first structure of the pump body of the refrigerant pump according to an exemplary embodiment of the present invention.

[0043] Figure 8 This is a schematic diagram of the second structure of the pump body of the refrigerant pump according to an exemplary embodiment of the present invention.

[0044] Figure 9 This is a schematic diagram of the end cover of the refrigerant pump according to an exemplary embodiment of the present invention.

[0045] Figure 10 This is a schematic diagram of the main body structure of the refrigerant pump housing according to an exemplary embodiment of the present invention.

[0046] Figure label:

[0047] 1000, Refrigerant pump; 2000, Housing; 2100, Liquid inlet; 2200, Liquid outlet; 2400, Refrigerant passage; 2500, Baffle; 2600, First chamber; 2700, Second chamber;

[0048] 100. Pump body;

[0049] 12. Fixing part; 121. First flange; 122. Second flange; 123. Reinforcing part; 1231. Through hole; 13. Sealing groove; 124. Positioning groove; 125. Positioning pin;

[0050] 20. Pump body; 211. Receiving cavity; 212. First bearing groove;

[0051] 200. Gear set; 210. Internal gear; 220. External gear; 230. Inlet; 240. Outlet;

[0052] 300. Shell body; 310. Third flange;

[0053] 400. End cap; 410. Mounting hole;

[0054] 500. Fasteners;

[0055] 600. Drive mechanism; 610. Stator; 611. Stator slot; 612. Winding;

[0056] 700, Drive shaft; 710, First end; 720, Second end; 800, First bearing; 900, Second bearing;

[0057] 3000, Electronic control board. Detailed Implementation

[0058] In the embodiments 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. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0059] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0060] The drive mechanism includes a stator 610 and a rotor. The stator 610 includes a stator core and a winding 612 wound around the stator core. The winding 612 is the main heat-generating component in the drive mechanism. Therefore, the stator is the component in the drive mechanism that most needs cooling. In order to cool the drive mechanism in the refrigerant pump, some related technologies have installed a conduit at the gear set outlet of the refrigerant pump to lead a small portion of refrigerant into the internal cavity of the motor for cooling the motor, and then the refrigerant flows back to the gear set inlet of the refrigerant pump through the flow path. The inventors of this application have found that, firstly, using only a small portion of the returned liquid to cool the motor results in low cooling efficiency and fails to cool the motor to a suitable operating temperature; secondly, the small portion of refrigerant used for cooling is very easy to vaporize after passing through the heated motor. The vaporized refrigerant flows back to the gear set inlet of the refrigerant pump, which causes poor compression, thereby reducing the delivery efficiency and increasing noise. In other related technologies, refrigerant leaking from the tiny gap between the end face and end cover of the refrigerant pump gear set is directed to the motor for cooling. However, the inventors found that because the leakage between the end face and end cover is relatively small, the cooling effect is poor, making it difficult to cool the motor to a suitable operating temperature.

[0061] Based on this, the present invention provides a refrigerant pump 1000, which is described below in conjunction with... Figures 1 to 10 The refrigerant pump 1000 of the present invention is described as follows: Figure 1 As shown, the device includes a housing 2000, an inlet 2100, and an outlet 2200. The housing 2000 is provided with a refrigerant channel 2400. The inlet 2100 and the outlet 2200 are both located in the housing 2000. The refrigerant pump 1000 also includes a drive mechanism 600. The drive mechanism 600 is used to drive the refrigerant from the inlet 2100 into the housing 2000 and through the refrigerant channel 2400 to the outlet 2200. The drive mechanism 600 includes a stator 610, which is located within the refrigerant channel 2400.

[0062] It is understood that the refrigerant enters the housing 2000 through the inlet 2100, flows through the refrigerant channel 2400, and then flows out through the outlet 2200. Unlike related technologies, where the stator 610 is located inside the housing 2000 but isolated from the refrigerant, the stator 610 of this invention is directly located inside the refrigerant channel 2400. Thus, a large amount of refrigerant entering the housing 2000 can efficiently cool the stator 610 as it flows through the refrigerant channel 2400. Therefore, the cooling effect on the stator 610 is good, and the stator 610 can be cooled to a suitable operating temperature, thereby improving the working efficiency of the refrigerant pump 1000. Furthermore, since the amount of refrigerant used to cool the stator 610 is large, the temperature rise of the refrigerant is small, making it less prone to vaporization. Moreover, since the refrigerant after cooling the stator 610 flows to the liquid outlet 2200 through the refrigerant channel 2400, even if a small amount of vaporization occurs, it will easily flow out of the liquid outlet 2200 along with the liquid refrigerant, reducing the impact of vaporization on the compression function of the refrigerant pump 1000 and also reducing the noise of the refrigerant pump 1000 during operation.

[0063] It is understandable that the refrigerant channel 2400 here refers to the refrigerant channel 2400 from the liquid inlet 2100 to the liquid outlet 2200. That is, the refrigerant flows from the liquid inlet 2100 to the liquid outlet 2200 in the refrigerant channel 2400.

[0064] In some alternative implementations, such as Figure 1 As shown, along the axial direction of the refrigerant pump 1000, the stator 610 is located between the inlet 2100 and the outlet 2200. In this way, the refrigerant flows from the inlet 2100 to the outlet 2200 approximately in the axial direction. This reduces the resistance to refrigerant flow and facilitates the arrangement of the refrigerant channel 2400 and the stator 610, thus simplifying the structure of the refrigerant pump 1000.

[0065] In some alternative implementations, combined with Figure 1 , Figure 5 and Figure 6 As shown, the refrigerant pump 1000 also includes a gear set 200, which includes a suction port 230 and a discharge port 240. The suction port 230 is connected to the liquid inlet 2100, and the stator 610 is located on the side of the discharge port 240 away from the suction port 230. By placing the stator 610 downstream of the discharge port 240 of the gear set 200, the refrigerant can flow more smoothly through the stator 610. The gear set 200 includes an internal gear 210 and an external gear 220 that mesh internally.

[0066] In some alternative implementations, such as Figure 2As shown, the liquid outlet 2200 is adapted to be higher than the liquid inlet 2100. In this way, the bubbles that may be generated when the refrigerant vaporizes while cooling the stator 610 are more likely to flow to the liquid outlet 2200, and thus more easily flow out of the liquid outlet 2200 with the liquid refrigerant. This further reduces the impact of vaporization on the compression function of the refrigerant pump 1000, and at the same time further reduces the noise of the refrigerant pump 1000 during operation.

[0067] In some alternative implementations, such as Figure 2 As shown, the liquid outlet 2200 is adapted to be located at the highest point of the liquid level inside the housing 2000. By positioning the liquid outlet 2200 at the highest point of the liquid level inside the housing 2000, when the refrigerant vaporizes, the bubbles will automatically flow to the liquid outlet 2200 and be discharged from the refrigerant pump 1000, further reducing the impact of vaporization on the compression function of the refrigerant pump 1000.

[0068] In some alternative implementations, such as Figure 2 As shown, the liquid inlet 2100 is located on the end face of the housing 2000 along the axial direction of the refrigerant pump 1000, and the liquid outlet 2200 is located on the side of the housing 2000. This design allows the liquid outlet 2200 to be positioned higher than the liquid inlet 2100 by adjusting the installation orientation of the refrigerant pump 1000. Furthermore, the housing 2000 typically includes an end cap 400 located at the axial end of the refrigerant pump 1000; placing the liquid inlet 2100 on the end cap 400 further facilitates machining.

[0069] In some alternative implementations, combined with Figure 1 and Figure 3 As shown, the stator 610 includes stator slots 611 and windings 612 disposed within the stator slots 611. Refrigerant is adapted to flow through the cavities within the stator slots 611 to allow the refrigerant to contact the windings 612. It is understood that while the stator slots 611 contain windings 612, the cavities within the stator slots 611 without windings 612 can be used for refrigerant flow. This allows the refrigerant to more fully contact the windings 612, resulting in more efficient cooling of the windings 612, and consequently, more effective cooling of the stator 610. Furthermore, this arrangement allows for a more rational spatial layout, facilitating the miniaturization of the refrigerant pump 1000.

[0070] In some alternative implementations, such as Figure 1 As shown, at least a portion of the outer wall surface of the stator 610 is spaced apart from the inner wall of the housing 2000. This allows for a larger flow area for the refrigerant as it flows through the stator 610, resulting in lower flow resistance.

[0071] In some alternative implementations, such as Figure 1As shown, the system also includes an electronic control board 3000, which is attached to the housing 2000. The refrigerant is adapted to exchange heat with the electronic control board 3000 through the housing 2000. It is understood that the refrigerant in this application is in contact with at least a portion of the inner wall of the housing 2000. By attaching the electronic control board 3000 to the housing 2000, the refrigerant can exchange heat with the electronic control board 3000 through the housing 2000, thereby dissipating heat from the electronic control board 3000 and improving the operational reliability of the refrigerant pump 1000. It is understood that the refrigerant dissipating heat from the electronic control board 3000 also dissipates heat from the heat-generating electronic components on the electronic control board 3000, thus keeping the electronic components at a suitable operating temperature.

[0072] In some alternative implementations, such as Figure 1 As shown, along the refrigerant flow direction, the control board 3000 is located between the stator 610 and the liquid outlet 2200. It can be understood that the control board 3000 being located between the stator 610 and the liquid outlet 2200 means that the control board 3000 is attached to the housing 2000 between the stator 610 and the liquid outlet 2200. In this way, the refrigerant first flows through the stator 610, cooling it, and then dissipates heat through the housing 2000 to the control board 3000. The temperature of the control board 3000 is typically higher than that of the stator 610. This arrangement allows for better heat dissipation for both the motor stator 610 and the control board 3000, ensuring that both the motor and the control board 3000 operate at their optimal temperatures, thus making the operation of the refrigerant pump 1000 more reliable.

[0073] In some alternative implementations, such as Figure 1 As shown, the housing 2000 includes a partition 2500, which divides the housing 2000 into a first chamber 2600 and a second chamber 2700. The refrigerant is adapted to flow in the first chamber 2600, and the electronic control board 3000 is adapted to be disposed in the second chamber 2700 and attached to the partition 2500.

[0074] By dividing the housing 2000 into a first chamber 2600 and a second chamber 2700, the refrigerant and the control board 3000 are adapted to be disposed in the two chambers respectively, thus avoiding contact between the control board 3000 and the refrigerant. The control board 3000 is attached to one side of the partition 2500, while the other side of the partition 2500 is in contact with the refrigerant. In this way, the refrigerant can exchange heat with the control board 3000 through the partition 2500.

[0075] In some alternative implementations, such as Figure 1 As shown, the baffle 2500 is arranged perpendicular to the axial direction of the refrigerant pump 1000. With the baffle 2500 arranged perpendicular to the axial direction of the refrigerant pump 1000, the area of ​​the baffle 2500 is minimized, the structure of the outer casing is simpler, and the installation of the electrical control board 3000 is more convenient.

[0076] In some alternative implementations, combined with Figure 1 , Figure 2 as well as Figures 7 to 10 As shown, the housing 2000 includes a housing body 300, a pump body 100, and an end cover 400. Along the axial direction of the refrigerant pump 1000, the pump body 100 is sealed between the housing body 300 and the end cover 400. The pump body 100 includes a receiving cavity 211 for accommodating the gear set 200 of the refrigerant pump 1000. That is, the pump body 100 is sealed to the end cover 400 and the housing body 300 at both ends along the axial direction of the refrigerant pump 1000, respectively. This axial sealing connection prevents deformation of the connection points, improves sealing reliability, and enhances the pressure resistance of the refrigerant pump 1000.

[0077] In some alternative implementations, combined with Figure 1 and Figure 7 The pump body 100 includes a pump body portion 20 and a fixing portion 12. The pump body portion 20 includes a receiving cavity 211. The fixing portion 12 extends outward from the pump body portion 20 and is adapted to be sealed to the end cover 400 and the housing body 300. By providing a fixing portion 12 located outside the pump body portion 20 for sealed connection with the end cover 400 and the housing body 300 of the refrigerant pump 1000, assembly is more convenient.

[0078] In some alternative implementations, combined with Figure 2 and Figure 7 As shown, the fixing part 12 includes a first flange 121 and a second flange 122. The first flange 121 and the second flange 122 are respectively provided at both ends of the pump body 100. The first flange 121 is adapted to be sealed to the end cover 400, and the second flange 122 is adapted to be sealed to the housing body 300.

[0079] Since the axial ends of the pump body 100 are respectively sealed and connected to the end cover 400 of the refrigerant pump 1000 and the housing body 300, the fixing part 12 includes a first flange 121 and a second flange 122 located at both axial ends of the pump body 100, which facilitates the connection of the pump body 100. It is understood that both the first flange 121 and the second flange 122 are flanges, and both have multiple bolt through holes. During connection, the first flange 121 and the second flange 122 respectively mate with flanges on other components, and are fixedly connected by multiple bolts passing through the multiple bolt through holes.

[0080] In some alternative implementations, such as Figure 7As shown, the fixing part 12 also includes a reinforcing part 123 connected between the first flange 121 and the second flange 122. The reinforcing part 123 is provided with a through hole 1231. The fastener 500 is adapted to pass through the first flange 121, the through hole and the second flange 122.

[0081] It is understood that the reinforcing part 123 can be located axially between the first flange 121 and the second flange 122. The through hole passes through the reinforcing part 123 along the axial direction of the pump body 100. When the pump body 100 is sealed and connected to the end cover 400 and the housing body 300 through the fixing part 12, the fasteners 500 can pass through the mounting hole 410 of the end cover 400, the bolt through hole of the first flange 121, the through hole of the reinforcing part 123, the bolt through hole of the second flange 122, and the bolt through hole of the third flange 310 of the housing in sequence, so as to fix the end cover 400, the pump body 100 and the housing body 300. By setting the reinforcing part 123, the connection strength between the pump body 100 and other components can be further improved, thereby further improving the pressure resistance of the refrigerant pump 1000.

[0082] In some alternative implementations, such as Figure 8 As shown, the end cover 400 is provided with a mounting hole 410, and the fastener 500 is adapted to pass through the mounting hole 410, the first flange 121, and the second flange 122. By having the fastener 500 pass through the mounting hole 410 of the end cover 400, the bolt through hole of the first flange 121, and the bolt through hole of the second flange 122 along the axial direction of the refrigerant pump 1000, the connection between the pump body 100 and the end cover 400 is less prone to deformation, which can improve the connection strength between the pump body 100 and the end cover 400, thereby improving the pressure resistance of the refrigerant pump 1000.

[0083] In some alternative implementations, such as Figure 2 As shown, the housing body 300 includes a third flange 310, and the second flange 122 is adapted to be fixedly connected to the third flange 310. The housing body 300 and the pump body 100 are fixedly connected by flanges, so the connection part between the housing body 300 and the pump body 100 is not easily deformed, which can improve the connection strength between the housing and the pump body 100, thereby improving the pressure resistance of the refrigerant pump 1000.

[0084] In some alternative implementations, such as Figure 9 As shown, the end cap 400 is provided with a mounting hole 410, the housing body 300 includes a third flange 310, and the fastener 500 is adapted to pass through the mounting hole 410, the first flange 121, the second flange 122 and the third flange 310.

[0085] That is, the end cover 400, pump body 100 and housing body 300 are fixed with the same fastener 500 and all are fixed with flanges. This not only ensures the connection strength, but also improves the integrity of the end cover 400, pump body 100 and housing body 300 as well as the accuracy of their relative positions, and further improves the operational stability and pressure resistance of the entire refrigerant pump 1000.

[0086] It is understandable that the bolt through holes of the first flange 121 and the second flange 122 are both smooth holes. One of the mounting holes 410 of the end cover 400 and the bolt through holes of the third flange 310 is a threaded hole and the other is a smooth hole. The fastener 500 includes bolts, which facilitates the installation and tightening of the fastener 500.

[0087] It is understood that the fastener 500 may protrude from the mounting hole 410 on the side opposite to the pump body 100, and / or the fastener 500 may protrude from the third flange 310 on the side opposite to the pump body 100. That is, one end of the fastener 500 may extend out of the mounting hole 410 and protrude from the side opposite to the pump body 100; the other end may extend out of the bolt through-hole of the third flange 310 and protrude from the side opposite to the pump body 100; or one end may extend out of the mounting hole 410 and protrude from the side opposite to the pump body 100, and the other end may extend out of the bolt through-hole of the third flange 310 and protrude from the side opposite to the pump body 100. This can further improve the connection strength. The portion protruding from the mounting hole 410 or the third flange 310 can be tightened with a nut.

[0088] In some alternative implementations, such as Figure 7 and Figure 8 As shown, the fixing part 12 includes a positioning part, which is used to position the connection between the fixing part 12 and the end cover 400, and / or to position the connection between the fixing part 12 and the housing body 300. By providing the positioning part, the positioning of the fixing part 12 and the end cover 400 can be made more convenient and accurate, and / or the positioning of the fixing part 12 and the housing body 300 can be made more convenient and accurate. It is understood that the positioning part can be provided on the end face of the pump body 100 near the end cover 400, for example, as... Figure 7 As shown, the positioning part is a positioning groove 124 provided on the end face of the pump body 100 near the end cover 400, and / or, the positioning part can be provided on the end face of the pump body 100 near the housing body 300, for example, as Figure 8 As shown, the positioning part is a positioning post 125 provided on the end face of the pump body 100 near the housing body 300. Correspondingly, the end cover 400 or the housing body 300 is provided with a structure that is adapted to the positioning groove or positioning post.

[0089] In some alternative implementations, such as Figure 7 As shown, at least one end face of the pump body 100 in the axial direction is provided with a sealing groove 13, which is used to accommodate the sealing element. By providing the sealing groove 13, the installation position of the sealing element can be positioned, making assembly more convenient and ensuring a better sealing effect.

[0090] In some alternative implementations, such as Figure 7 and Figure 8 As shown, the pump body 100 is a one-piece molded part. By making the pump body 100 a one-piece molded part, the problem of difficulty in ensuring the assembly accuracy of the pump body 100 and the housing in related technologies can be solved. In related technologies, the machining accuracy of the housing and the pump body is superimposed and affects the positional accuracy of the gear set 200. Therefore, it is necessary to ensure the machining accuracy of the housing and the pump body. However, since the pump body 100 of this invention is a one-piece molded part, it is only necessary to ensure the machining accuracy of the pump body 100 to improve the positional accuracy of the gear set 200. The machining accuracy control is simpler. Furthermore, since the pump body 100 is a one-piece molded part, the impact of thermal expansion and contraction on the positional accuracy of the gear set 200 can be reduced, further improving the positional accuracy of the gear set 200, thereby improving the working efficiency of the refrigerant pump 1000.

[0091] In some alternative implementations, such as Figure 7 and Figure 8 As shown, along the axial direction of the refrigerant pump 1000, the projected outer contour of the pump body 100 is a polygonal structure. This reduces the space occupied by the pump body 100 compared to a circular projected outer contour, improving the overall lightweight design of the refrigerant pump 1000 while maintaining connection strength.

[0092] In some alternative implementations, such as Figure 7 and Figure 8 As shown, along the axial direction of the refrigerant pump 1000, the outer contour of the pump body 100's projection is a regular polygon structure. It can be understood that the multiple bolt holes used for connection are appropriately distributed at multiple corner positions of the polygon structure. Because the outer contour is a regular polygon structure, the connection points are more evenly distributed circumferentially around the pump body 100, resulting in a more uniform distribution of connection strength in the circumferential direction. This further ensures the connection strength and sealing performance of the refrigerant pump 1000.

[0093] Along the axial direction of the refrigerant pump 1000, the projected outer contour of the pump body 100 is one of a square, a regular hexagon, or a regular octagon. It can be understood that when the pump body 100 is small, and four connection points are sufficient to ensure its connection strength, the projected outer contour of the pump body 100 along the axial direction is suitable as a square structure, ensuring connection strength while facilitating manufacturing. When the pump body 100 is large, and four connection points are insufficient to ensure its connection strength, the projected outer contour of the pump body 100 along the axial direction is suitable as a regular hexagon, with six connection points circumferentially. When the pump body 100 is very large, the projected outer contour of the pump body 100 along the axial direction must be a regular octagon, with eight connection points circumferentially. Of course, this is not the only possible design; the design can be tailored to the specific connection strength requirements and manufacturing complexity.

[0094] In some alternative implementations, such as Figure 4 As shown, the refrigerant pump 1000 also includes a drive shaft 700. The drive mechanism 600 is adapted to drive the gear set 200 to rotate via the drive shaft 700. The refrigerant pump 1000 also includes a first bearing 800 and a second bearing 900. Both ends of the drive shaft 700 are rotatably connected to the housing 2000 via the first bearing 800 and the second bearing 900, respectively. The support from the first bearing 800 and the second bearing 900 makes the rotation of the drive shaft 700 smoother.

[0095] In some alternative implementations, such as Figure 4 As shown, the drive shaft 700 has a first end 710 and a second end 720 that are axially opposite each other. The first end 710 is located on the first end 710, the second bearing 900 is located on the second end 720, and the gear set 200 is located on the side of the first bearing 800 away from the second bearing 900.

[0096] It is understandable that, such as Figure 8 As shown, the pump body 100 may be provided with a first bearing groove 212, and the first bearing 800 is disposed in the first bearing groove 212. The gear set 200 is disposed in the receiving cavity 211 of the pump body 100. The gear set 200 is disposed on the side of the first bearing 800 away from the second bearing 900. Thus, the groove opening of the first bearing groove 212 and the opening of the receiving cavity 211 face opposite directions. This facilitates the assembly of the gear set 200 and the first bearing 800 into the pump body 100. Since the pump body 100 is a one-piece molded part, the relative positional relationship between the gear set 200 and the first bearing 800 can be guaranteed. This makes it easy to guarantee the relative positional relationship between the drive shaft 700 and the gear set 200, as well as between the drive shaft 700 and the first bearing 800. This ensures the stable and reliable operation of the refrigerant pump 1000.

[0097] In some alternative implementations, such as Figure 4 As shown, the first bearing 800 is a sliding bearing, and the second bearing 900 is a rolling bearing. Since the first bearing 800 is located close to the gear set 200, to ensure the smooth operation of the drive shaft 700, it is necessary to ensure the relative positional relationship between the first bearing 800 and the gear set 200. By making the first bearing 800 a rolling bearing, it is easy to ensure the relative positional relationship between the first bearing 800 and the gear set 200. On the other hand, the second bearing 900 is located far from the gear set 200, and the positional accuracy requirement of the second bearing 900 is lower than that of the first bearing 800. By making the second bearing 900 a sliding bearing, it is easier to assemble the drive shaft 700.

[0098] According to a second aspect of the present invention, the present invention also provides a thermal management system including the refrigerant pump 1000 described above. Therefore, the thermal management system includes all the technical effects of the refrigerant pump 1000 in the above embodiments. Since the technical effects of the refrigerant pump 1000 have been described in detail above, they will not be repeated here.

[0099] According to a third aspect of the present invention, the present invention also provides a vehicle including the above-described refrigerant pump 1000, or including the above-described thermal management system. Therefore, the vehicle includes all the technical effects of the refrigerant pump 1000 or the thermal management system in the above embodiments. Since the technical effects of the refrigerant pump 1000 have been described in detail above, they will not be repeated here.

[0100] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "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 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.

[0101] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A coolant pump characterized by comprising: The application relates to a refrigerant pump. The application relates to a refrigerant pump. The application relates to a refrigerant pump. The application relates to a refrigerant pump. The application relates to a refrigerant pump. The application relates to a refrigerant pump.

2. The refrigerant pump according to claim 1, characterized by The application relates to a refrigerant pump.

3. The refrigerant pump according to claim 1, wherein The application relates to a refrigerant pump.

4. The coolant pump according to any one of claims 1 to 3, characterized in that The application relates to a refrigerant pump.

5. The refrigerant pump according to claim 4, wherein The application relates to a refrigerant pump.

6. The refrigerant pump according to claim 4, wherein The application relates to a refrigerant pump.

7. The refrigerant pump of claim 1, wherein The application relates to a refrigerant pump.

8. The refrigerant pump of claim 1, wherein The application relates to a refrigerant pump.

9. The refrigerant pump of claim 1, wherein The application relates to a refrigerant pump.

10. The refrigerant pump of claim 9, wherein The application relates to a refrigerant pump.

11. The refrigerant pump of claim 9, wherein The application relates to a refrigerant pump.

12. The refrigerant pump of claim 11, wherein, The application relates to a refrigerant pump.

13. The refrigerant pump of claim 1, wherein The application relates to a refrigerant pump.

14. The refrigerant pump of claim 13, wherein The application relates to a refrigerant pump.

15. The refrigerant pump of claim 14, wherein, The application relates to a refrigerant pump.

16. The cryogen pump of claim 15, wherein The application relates to a refrigerant pump.

17. The cryogen pump of claim 15, wherein The application relates to a refrigerant pump.

18. The cryogen pump of claim 15, wherein, The application relates to a refrigerant pump.

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The refrigerant pump of claim 14, wherein, The fixing part comprises a positioning part for positioning the connection between the fixing part and the end cover, and / or for positioning the connection between the fixing part and the main body of the shell.

21. The refrigerant pump of claim 13, wherein, The pump body is an integral molding.

22. The refrigerant pump of claim 13, wherein, The outer contour of the projection of the pump body along the axial direction of the refrigerant pump is a polygonal structure.

23. The cryogen pump of claim 22, wherein, The outer contour of the projection of the pump body along the axial direction of the refrigerant pump is a regular polygonal structure.

24. The refrigerant pump of claim 3, wherein, The refrigerant pump further comprises a transmission shaft, the driving mechanism is adapted to drive the gear set to rotate through the transmission shaft, and the refrigerant pump further comprises a first bearing and a second bearing, both ends of the transmission shaft are rotatably connected with the shell through the first bearing and the second bearing respectively.

25. The cryogen pump of claim 24, wherein, The transmission shaft has a first end and a second end opposite to each other along the axial direction, the first bearing is arranged at the first end, the second bearing is arranged at the second end, and the gear set is arranged at the side of the first bearing away from the second bearing.

26. The cryogen pump of claim 25, wherein, The first bearing is a sliding bearing, and the second bearing is a rolling bearing.

27. A thermal management system, characterized by, The refrigerant pump according to any one of claims 1-26.

28. A vehicle characterized by The refrigerant pump according to any one of claims 1-26, or the thermal management system according to claim 27.

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