Pump assembly and vehicle

Abstract

The present application provides a pump assembly and a vehicle. The pump assembly includes a box body, a liquid passage, a housing and a pump rotor. The box body includes a receiving cavity. The liquid passage is arranged on the box body and is communicated with the receiving cavity. The housing is connected to the box body, and there is a pump cavity between the housing and the box body. The pump cavity is communicated with the liquid passage. The pump rotor is located in the pump cavity and can move relative to the housing so that the working medium circulates in the receiving cavity, the liquid passage and the pump cavity. In the pump assembly of the present application, the housing and the box body are connected to form a pump cavity for accommodating the pump rotor. The box body not only has its own basic function, but also can form the function of the pump cavity with the housing, that is, the box body has a dual function, high integration, low cost, and reduces the number of components, thereby simplifying the overall structure of the pump assembly.

Description

Technical Field

[0001] The present application relates to the technical field of pump assemblies, and in particular, to a pump assembly and a vehicle. Background Art

[0002] Currently, a pump includes a housing and a pump cover. The housing and the pump cover are connected together to form a pressurizing chamber. A rotor is provided in the pressurizing chamber, and the rotor operates in the pressurizing chamber to complete the pressurizing process of the working medium. A flow channel communicating with the pressurizing chamber is provided on the pump cover, and the flow channel is used for the circulating flow of the working medium.

[0003] Although the pump cover can be used to form the pressurizing chamber and also play the role of forming the flow channel, however, as an independent component, the pump cover not only increases the production cost, but also leads to low assembly efficiency and slows down the production rhythm due to the assembly requirement between the pump cover and the housing. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] To this end, in the first aspect of the present application, a pump assembly is proposed.

[0006] In the second aspect of the present application, a vehicle is proposed.

[0007] In view of this, according to the first aspect of the present application, a pump assembly is provided, including a box body, a liquid passing channel, a housing, and a pump rotor. The box body includes a receiving cavity. The liquid passing channel is provided on the box body and communicates with the receiving cavity. The housing is connected to the box body, and there is a pump cavity between the housing and the box body. The pump cavity communicates with the liquid passing channel. The pump rotor is located in the pump cavity, and the pump rotor can move relative to the housing so that the working medium circulates in the receiving cavity, the liquid passing channel, and the pump cavity.

[0008] The pump assembly provided by the present application includes a box body, a liquid passing channel, a housing, and a pump rotor. The box body includes a receiving cavity. The liquid passing channel is provided on the box body and communicates with the receiving cavity. The housing is connected to the box body, and there is a pump cavity between the housing and the box body. The pump cavity communicates with the liquid passing channel. The pump rotor is located in the pump cavity, and the pump rotor can move relative to the housing, so that the working medium in the pump cavity is pressurized and then circulates in the pump cavity, the liquid passing channel, and the receiving cavity.

[0009] It should be noted that the box body can be a gearbox, and a speed-changing assembly is accommodated in the receiving cavity of the gearbox, and the working medium is grease. Or, the box body is a water tank, and water is accommodated in the receiving cavity of the water tank, and the working medium is water. The basic function of the box body is the function of its own receiving cavity, which is used to accommodate the speed-changing assembly or hold the working medium.

[0010] In the pump assembly of the present application, the housing and the box body are connected to form a pump cavity for accommodating the pump rotor. The box body not only has its own basic function, but also can form the pump cavity together with the housing, that is, the box body has a dual function, with high integration, low cost, and reduced number of components, thereby simplifying the overall structure of the pump assembly. Compared with the solution in the related art where the housing and the pump cover form a pressurized cavity, in the present application, the pump cover structure is omitted, the number of components is reduced, the weight of the whole machine is reduced, the production cost is lowered, there is no need for the assembly of the pump cover and the housing, and the assembly efficiency can be effectively improved and the production rhythm can be accelerated.

[0011] At the same time, in the related art, after the housing and the pump cover of the pump are assembled and then installed on the component to be assembled, for the whole product, the housing, the pump cover, and the component to be assembled will all occupy a part of the axial height. However, in the pump assembly of the present application, the housing is directly connected to the box body to enclose and form the pump cavity. After removing the pump cover in the related art, the normal operation of the pump rotor can still be realized, and the axial height of the whole product can be effectively reduced, adapting to the development trend of being thinner, lighter, and smaller.

[0012] In a possible design, further, a part of the box body is recessed in a direction away from the housing to form the pump cavity.

[0013] In this design, along the direction away from the housing, a part of the box body is recessed to form the pump cavity, that is to say, the box body deforms alone to form the pump cavity, and the structure of the housing does not need to be changed too much, and only needs to be installed on the box body, so that the original pump product only needs to stop processing the pump cover and can be applied to the new product, with a wide range of applications.

[0014] It can be imagined that since the manufacturing cost of the pump product is high, in this design, the structure of the box body is improved to achieve the purpose of enclosing and forming the pump cavity with the housing, and the structure of the housing is not changed as much as possible or little changed, so that the housing on the original production line can continue to be used.

[0015] In a possible design, further, a part of the housing is recessed in a direction away from the box body to form the pump cavity.

[0016] In this design, along the direction away from the box body, a part of the housing is recessed to form the pump cavity, that is to say, the housing deforms alone to form the pump cavity, and the structure of the box body does not need to be changed too much, and only needs to be fixedly installed with the housing, with relatively low requirements for the structure of the box body, and the applicable range of the box body is improved.

[0017] In a possible design, further, the pump cavity includes a first cavity and a second cavity that are communicated. A part of the box body is recessed in a direction away from the housing to form the first cavity, and a part of the housing is recessed in a direction away from the box body to form the second cavity.

[0018] In this design, the pump chamber includes a first chamber and a second chamber. The first chamber and the second chamber are in communication with each other. The first chamber is provided on the box body, and the second chamber is provided on the casing. That is to say, the box body and the casing each form a part of the pump chamber, enabling the box body and the casing to make adaptive changes for the formation of the pump chamber, avoiding the problem that a relatively high processing requirement may be imposed if only one of the box body and the casing forms the pump chamber alone, which would cause a greater preparation difficulty. At the same time, during the movement of the pump rotor, a part of the box body and a part of the casing may come into contact with the pump rotor to provide a limiting effect on the pump rotor. The combined action of the box body and the casing can further ensure the smooth movement of the pump rotor.

[0019] In a possible design, further, one of the box body and the casing has a limiting groove, and a part of the other of the box body and the casing extends into the limiting groove.

[0020] In this design, considering that the pump rotor rotates in the pump chamber formed by the box body and the casing, in order to ensure the reliable connection performance between the box body and the casing, a limiting groove is provided on one of the box body and the casing. The notch of the limiting groove faces the other of the box body and the casing, and a part of the other of the box body and the casing extends into the limiting groove, so that the box body and the casing are reliably connected. When the pump rotor rotates in the pump chamber, the connection performance between the box body and the casing is excellent, and the two will not undergo relative displacement along with the movement of the pump rotor.

[0021] Specifically, the limiting groove is provided on the box body, and a part of the casing extends into the limiting groove on the box body, and the two cooperate with each other to achieve stable positioning. Or, the limiting groove is provided on the casing, and a part of the box body extends into the limiting groove on the casing, thereby realizing the position determination between the box body and the casing.

[0022] In a possible design, further, the limiting groove is provided on the box body, and a part of the casing extends towards the box body to form a limiting flange, and the limiting flange is located in the limiting groove.

[0023] In this design, the limiting groove is provided on the box body, and the notch of the limiting groove faces the casing, which facilitates the assembly of the casing and the box body. Among them, a part of the casing extends towards the box body to form a limiting flange, and the limiting flange is located in the limiting groove, thereby realizing the positioning and installation of the box body and the casing.

[0024] It should be noted that the setting of the limiting groove and the limiting flange can realize the pre-positioning function between the box body and the casing, and can also realize the locking function. The specific structures of the limiting groove and the limiting flange can be adjusted according to actual needs.

[0025] For example, when implementing the pre-positioning function, after the limiting flange is inserted into the limiting groove, other locking structures can be used for locking. When the locking structure is not yet locked, the limiting flange can still be disengaged from the limiting groove.

[0026] When the limiting groove and the limiting flange can achieve the locking function, once the limiting flange is inserted into the limiting groove, the limiting flange cannot be disengaged from the limiting groove anymore. The two are engaged with each other to closely combine the box body and the casing, ensuring the overall structural stability of the pump assembly.

[0027] Furthermore, the limiting groove can be an annular groove, and the limiting flange is an annular boss. Or, the limiting groove can be multiple spaced-apart grooves, and correspondingly, the limiting flange is multiple bosses, with each boss corresponding to be installed in one groove body. Among them, the multiple bosses can be arranged asymmetrically, and correspondingly, the limiting groove is also arranged asymmetrically on the box body, which can ensure the precise assembly of the box body and the casing, and there is no possibility of misalignment or incorrect installation.

[0028] In a possible design, further, the box body has a mounting surface that contacts the casing. The pump assembly further includes a seal, and the seal is provided between the mounting surface of the box body and the casing.

[0029] In this design, since the pump chamber is located between the box body and the casing, under the action of the pump rotor, the working medium will complete the pressurization process in the pump chamber. For the working medium, there is a possibility of leaking along the gap between the box body and the casing. Therefore, a seal is provided between the box body and the casing, and the seal can prevent the working medium in the pump chamber from leaking and flowing away, avoiding affecting the pumping efficiency.

[0030] Among them, the seal can be a sealing ring, a sealing gasket, glue sealing, etc.

[0031] In a possible design, further, a part of one of the casing and the box body is recessed in a direction away from the other of the casing and the box body to form a sealing groove, and the seal is located in the sealing groove.

[0032] In this design, the box body has a mounting surface that can contact the casing. A part of the casing is recessed in a direction away from the mounting surface to form a sealing groove, or a part of the mounting surface of the box body is recessed in a direction away from the casing to form a sealing groove. A part of the seal is located in the sealing groove, thereby realizing the precise positioning and installation of the seal, and at the same time, it can also prevent the seal from moving between the casing and the box body and causing seal failure.

[0033] Among them, a part of the casing forms the sealing groove because the casing is relatively smaller in volume than the box body and is convenient for processing.

[0034] It should be noted that a part of the seal is located in the seal groove, and a part of the seal is extruded between the box body and the casing, so as to provide reliable sealing performance, ensure that the working medium in the pump chamber will not leak, and ensure the pumping efficiency.

[0035] In a possible design, further, the mounting surface includes a first mounting surface and a second mounting surface with an included angle. The seal includes a first seal part and a second seal part. The first seal part is located between the first mounting surface and the casing, and the second seal part is located between the second mounting surface and the casing.

[0036] In this design, the mounting surface of the box body includes a first mounting surface and a second mounting surface, and there is an included angle between the first mounting surface and the second mounting surface, that is, the first mounting surface and the second mounting surface are not coplanar. A first seal part is provided between the first mounting surface and the casing, and a second seal part is provided between the second mounting surface and the casing. The first seal part and the second seal part can form a double sealing barrier.

[0037] For example, the first seal part is arranged closer to the pump chamber than the second seal part. When the working medium in the pump chamber leaks along the first mounting surface, the working medium will first encounter the obstruction of the first seal part. When the first seal part fails to block the working medium, the working medium will continue to leak along the first mounting surface. Since there is an included angle between the first mounting surface and the second mounting surface, when the working medium extends from the first mounting surface to the second mounting surface, it first has to overcome the resistance brought by the included angle, and it is very difficult for the working medium to extend to the second mounting surface. At the same time, a second seal part is also provided on the second mounting surface to block the working medium. Then, under the double barrier of the first seal part and the second seal part, it is impossible for the working medium to leak from the gap between the box body and the casing.

[0038] In a possible design, further, the liquid passing channel includes a liquid inlet channel and a liquid outlet channel. The liquid inlet channel is arranged on the box body and is respectively communicated with the pump chamber and the accommodating chamber. The liquid outlet channel is arranged on the box body at an interval from the liquid inlet channel and is respectively communicated with the pump chamber and the accommodating chamber.

[0039] In this design, the liquid passing channel includes a liquid inlet channel and a liquid outlet channel arranged at intervals on the box body. The liquid inlet channel and the liquid outlet channel are respectively communicated with the pump chamber and the accommodating chamber. The working medium can enter the pump chamber through the liquid inlet channel, and after being pressurized by the action of the pump rotor in the pump chamber, the pressurized working medium can return to the accommodating chamber through the liquid outlet channel.

[0040] Among them, when the box body is a gearbox, the low-pressure grease enters the pump chamber through the liquid inlet channel, and after being pressurized under the action of the pump rotor, the pressurized grease is transported from the pump chamber to the accommodating chamber through the liquid outlet channel to lubricate the speed-changing components in the accommodating chamber.

[0041] Among them, when the box body is a water tank, after the low-pressure water enters the pump cavity through the liquid inlet channel, it is pressurized under the action of the pump rotor to form high-pressure water, and the high-pressure water is transported from the pump cavity to the accommodation cavity through the liquid outlet channel.

[0042] In a possible design, further, the extending direction of the liquid inlet channel is the same as that of the liquid outlet channel.

[0043] In this design, the extending direction of the liquid inlet channel is the same as that of the liquid outlet channel, that is, both the liquid inlet channel and the liquid outlet channel are axially extended and provided on the box body, or both the liquid inlet channel and the liquid outlet channel are radially extended and provided on the box body. It can be adaptively adjusted according to the arrangement requirements of the pump cavity formed between the casing and the box body.

[0044] In a possible design, further, there is an included angle between the extending direction of the liquid inlet channel and that of the liquid outlet channel.

[0045] In this design, the extending direction of the liquid inlet channel is different from that of the liquid outlet channel, and there is an included angle between the two. For example, one of the liquid inlet channel and the liquid outlet channel extends axially, and the other extends radially. Specifically, the liquid inlet channel extends axially and the liquid outlet channel extends radially.

[0046] In a possible design, further, the pump assembly further includes a filter, and the filter is provided in the liquid outlet channel and / or the liquid inlet channel.

[0047] In this design, the pump assembly further includes a filter, and the filter is provided in the liquid outlet channel. When the pressurized working medium flows from the pump cavity to the accommodation cavity, the filter can filter the impurities in the pressurized working medium to prevent the impurities from entering the accommodation cavity.

[0048] Further, the filter is also provided in the liquid inlet channel to prevent the impurities in the low-pressure working medium in the accommodation cavity from flowing into the pump cavity through the liquid inlet channel, which may damage the pump rotor and directly affect the normal pressurization process of the working medium.

[0049] Further, the filter is not only provided in the liquid inlet channel but also in the liquid outlet channel. The setting of the filter can make the accommodation cavity and the pump cavity two relatively independent chambers, only allowing the working medium to flow smoothly between the two chambers, while not allowing any other impurities to circulate between the accommodation cavity and the pump cavity. Once impurities are generated in one of the accommodation cavity and the pump cavity due to long-term operation, the impurities will remain in that chamber and will not circulate to the other chamber through the liquid passing channel, which can extend the service life of the pump assembly.

[0050] In a possible design, further, the pump assembly further includes a driving part, which is arranged on the housing. The driving part is located on the side of the pump rotor away from the box body. The driving part is connected to the pump rotor, where the pump rotor includes a gear rotor or an impeller.

[0051] In this design, the pump assembly further includes a driving part, which is arranged on the housing. The driving part is located on the side of the pump rotor away from the box body. The driving part is connected to the pump rotor. The driving part is used to drive the pump rotor to rotate relative to the housing, so as to pressurize the working medium in the pump chamber.

[0052] Specifically, the driving part is a motor. The driving shaft of the motor is connected to the pump rotor, and the driving shaft can drive the pump rotor to rotate. Since the pump rotor is located between the housing and the box body, and the driving part is located inside the housing, that is to say, the pump rotor is located outside the housing. There is a shaft hole provided on the housing for the driving shaft to extend out. The stator and rotor of the motor are located inside the housing. A part of the driving shaft is located inside the housing, and the other part of the driving shaft extends out through the shaft hole and cooperates with the pump rotor, so as to drive the pump rotor to move in the pump chamber. Among them, the housing is an integral structure, and the structural reliability is stronger.

[0053] Specifically, the pump rotor includes a gear rotor, and the working medium is grease. Specifically, the gear rotor includes an internal gear and an external gear. The internal gear cooperates with the driving shaft, and the external gear is arranged outside the internal gear. The internal gear can drive the external gear to rotate, that is, the driving shaft can drive the external gear to rotate through the internal gear. The internal gear and the second gear construct a pressure chamber, and the pressure chamber includes a high-pressure chamber and a low-pressure chamber. The pressure borne by the high-pressure chamber is greater than that borne by the low-pressure chamber. Among them, the low-pressure chamber is communicated with the liquid inlet channel, and the high-pressure chamber is communicated with the liquid outlet channel. Specifically, through the meshing of the conjugate curve tooth profiles of the internal gear and the external gear, each tooth is in contact with each other, and the external gear is driven to rotate in the same direction. The internal gear divides the inner cavity of the external gear into multiple working chambers. Due to the offset of the centers of the internal and external gears, the volumes of the multiple working chambers change with rotation. The area where the volume increases forms a certain vacuum, corresponding to the liquid inlet channel, and the area where the volume decreases has an increased pressure, corresponding to the oil outlet channel.

[0054] Specifically, the pump rotor includes an impeller, and the working medium is water. Specifically, the impeller is arranged on the driving shaft. Under the action of the driving shaft, the impeller rotates, so as to pressurize the water in the pump chamber, so that the pressurized water will flow out through the liquid outlet channel. Among them, the impeller can be of structures such as centrifugal, rotor or scroll.

[0055] Among them, the pump rotor is driven by the driving shaft to rotate, so as to do work on the working medium in the form of a fluid, and further realize the pressurization process. Specifically, the pump rotor can also be a cycloid rotor.

[0056] In a possible design, further, the pump assembly further includes a first assembly hole, a second assembly hole, and a fastener. The first assembly hole is provided on the housing, the second assembly hole is provided on the box body, and the fastener passes through the first assembly hole and the second assembly hole to lock the housing and the box body.

[0057] In this design, the pump assembly further includes a first assembly hole, a second assembly hole, and a fastener. The first assembly hole is provided on the housing, the second assembly hole is provided on the box body, the first assembly hole and the second assembly hole are correspondingly arranged, and the fastener passes through the first assembly hole and the second assembly hole, thereby realizing the locking connection between the box body and the housing.

[0058] It should be noted that the cooperation between the limiting flange and the limiting groove mentioned in the foregoing solution can realize the preliminary pre-positioning function. The fastener, the first assembly hole, and the second assembly hole belong to the locking structure, which can reliably connect the box body and the housing.

[0059] Specifically, the number of the first assembly hole, the second assembly hole, and the fastener is a plurality of corresponding ones. Among them, the plurality of first assembly holes are evenly spaced on the housing, so as to realize all-round positioning and installation, and the structural stability is better.

[0060] According to the second aspect of the present application, a vehicle is provided, including the pump assembly provided by any of the above designs.

[0061] The vehicle provided by the present application includes the pump assembly provided by any of the above designs, so it has all the beneficial effects of this pump assembly, which will not be elaborated here.

[0062] It should be noted that the vehicle can be a new energy vehicle. Among them, new energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc. Of course, the vehicle can also be a traditional fuel vehicle.

[0063] In a possible design, further, the box body of the pump assembly includes a gearbox, the vehicle further includes a speed change assembly, and the speed change assembly is located in the accommodation cavity of the gearbox; and / or, the box body of the pump assembly includes a water tank.

[0064] In this design, the box body of the pump assembly can be a gearbox, a speed change assembly is provided in the accommodation cavity of the gearbox, the housing of the pump assembly is connected to the gearbox, and low-pressure grease enters the pump cavity through the liquid inlet channel. Under the action of the gear rotor, it is compressed into high-pressure grease and then flows into the accommodation cavity through the liquid outlet channel for use by the speed change assembly.

[0065] Among them, the box body of the pump assembly can also be a water tank, water is contained in the accommodation cavity of the water tank, the housing of the pump assembly is connected to the water tank, and low-pressure water enters the pump cavity through the liquid inlet channel. Under the action of the rotating impeller, it is compressed into high-pressure water and then flows into the interior of the water tank through the liquid outlet channel.

[0066] In a possible design, further, the vehicle includes a housing and a main drive motor. The housing is connected to the transmission, the main drive motor is located inside the housing, and the rotating shaft of the main drive motor is connected to the transmission component.

[0067] In this design, the vehicle includes a housing and a main drive motor. The main drive motor is housed inside the housing. The housing is connected to the transmission, and the rotating shaft of the main drive motor is connected to the transmission component. Among them, the housing of the main drive motor, the transmission, and the engine housing are connected to form a three-in-one structure, making the internal structure layout of the vehicle more compact and the layout more reasonable. The additional aspects and advantages of the present application will become apparent in the following description section or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] The above and / or additional aspects and advantages of the present application will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, where:

[0069] Figure 1 shows a schematic structural diagram of a pump assembly according to the first embodiment of the present application;

[0070] Figure 2 shows a schematic structural diagram of a pump assembly according to the second embodiment of the present application;

[0071] Figure 3 shows a schematic structural diagram of a pump assembly according to the third embodiment of the present application;

[0072] Figure 4 shows a schematic structural diagram of a pump assembly according to the fourth embodiment of the present application;

[0073] Figure 5 shows a schematic structural diagram of a pump assembly according to the fifth embodiment of the present application;

[0074] Figure 6 shows a schematic structural diagram of a pump assembly according to the sixth embodiment of the present application;

[0075] Figure 7 shows an exploded schematic diagram of a pump assembly according to an embodiment of the present application.

[0076] Among them, Figures 1 to 7 the corresponding relationship between the reference numerals in the drawings and the component names is:

[0077] 100 pump assembly,

[0078] 110 box body, 111 second assembly hole,

[0079] 120 liquid passage, 121 liquid inlet passage, 122 liquid outlet passage,

[0080] 130 housing, 131 limiting flange, 132 sealing groove, 133 first assembly hole,

[0081] 140 pump chamber,

[0082] 150 pump rotor,

[0083] 160 seal, 161 first sealing portion, 162 second sealing portion,

[0084] 170 drive portion. Detailed implementation manners

[0085] In order to more clearly understand the above objects, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0086] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0087] The following refers to Figures 1 to 7 Describe the pump assembly 100 and the vehicle provided according to some embodiments of the present application.

[0088] According to an embodiment of the first aspect of the present application, a pump assembly 100 is provided, as Figures 1 to 7 shown. The pump assembly 100 includes a box body 110, a liquid passing channel 120, a housing 130 and a pump rotor 150. The box body 110 includes a receiving cavity. The liquid passing channel 120 is provided on the box body 110. The liquid passing channel 120 communicates with the receiving cavity. The housing 130 is connected to the box body 110. There is a pump chamber 140 between the housing 130 and the box body 110. The pump chamber 140 communicates with the liquid passing channel 120. The pump rotor 150 is located in the pump chamber 140. The pump rotor 150 can move relative to the housing 130 so that the working medium circulates in the receiving cavity, the liquid passing channel 120 and the pump chamber 140.

[0089] The pump assembly 100 provided by the present application includes a box body 110, a liquid passing channel 120, a housing 130 and a pump rotor 150. The box body 110 includes a receiving cavity. The liquid passing channel 120 is provided on the box body 110. The liquid passing channel 120 communicates with the receiving cavity. The housing 130 is connected to the box body 110. There is a pump chamber 140 between the housing 130 and the box body 110. The pump chamber 140 communicates with the liquid passing channel 120. The pump rotor 150 is located in the pump chamber 140. The pump rotor 150 can move relative to the housing 130, so that the working medium in the pump chamber 140 is pressurized and then circulates in the pump chamber 140, the liquid passing channel 120 and the receiving cavity.

[0090] It is worth noting that the housing 110 can be a gearbox, the gearbox housing cavity contains a gearshift component, and the working medium is grease, or the housing 110 is a water tank, the water tank housing cavity contains water, and the working medium is water. The basic function of the housing 110 is that of its own housing cavity, which is used to contain the gearshift component or the working medium.

[0091] The pump assembly 100 in the present application uses a casing 130 and a box body 110 connected to form a pump chamber 140 for accommodating a pump rotor 150. The box body 110 not only has its own basic function, but also can form the pump chamber 140 with the casing 130, that is, the box body 110 has a dual function, high integration, low cost, and reduces the number of parts, thereby simplifying the overall structure of the pump assembly 100. Compared with the scheme of using a casing and a pump cover to form a pressurized chamber in the related art, the pump cover structure is abandoned in the present application, the number of parts is reduced, the weight of the whole machine is reduced, the production cost is reduced, and there is no need to assemble the pump cover and the casing, which can effectively improve the assembly efficiency and speed up the production cycle.

[0092] At the same time, in the related art, the pump casing and pump cover are assembled and then installed on the components to be assembled. Therefore, for the product as a whole, the casing, pump cover, and components to be assembled will occupy a part of the axial height. However, in the pump assembly 100 of the present application, the casing 130 is directly connected to the box body 110 to enclose the pump cavity 140. After removing the pump cover in the related art, the normal operation of the pump rotor 150 can also be achieved, and the overall axial height of the product can be effectively reduced, which is adapted to the development trend of thinness and miniaturization.

[0093] Furthermore, if Figure 1 , Figure 2 and Figure 3 As shown, a portion of the housing 110 is recessed in a direction away from the casing 130 to form a pump chamber 140 .

[0094] In this embodiment, a portion of the case 110 is recessed in a direction away from the casing 130 to form the pump chamber 140. That is to say, the case 110 is deformed alone to form the pump chamber 140. The structure of the casing 130 does not need to be changed too much and only needs to be installed on the case 110. Therefore, the original pump product only needs to stop processing the pump cover and can be applied to the new product, which has a wide range of applicability.

[0095] As can be imagined, due to the high manufacturing cost of pump products, the present design improves the structure of the box body 110 to achieve the purpose of enclosing with the casing 130 to form the pump chamber 140, and tries not to change or change the structure of the casing 130 as little as possible, so that the casing 130 on the original production line can continue to be used.

[0096] Further, as Figure 4 and Figure 5 shown, a part of the housing 130 is recessed away from the box body 110 to form a pump chamber 140.

[0097] In this embodiment, along the direction away from the box body 110, a part of the housing 130 is recessed to form the pump chamber 140. That is to say, the housing 130 deforms alone to form the pump chamber 140, and the structure of the box body 110 does not need to be changed too much. Only the housing 130 needs to be fixedly installed with the box body 110, and the structural requirements for the box body 110 are relatively low, improving the applicable range of the box body 110.

[0098] As Figure 6 shown, further, the pump chamber 140 includes a first cavity and a second cavity that are communicated. A part of the box body 110 is recessed away from the housing 130 to form the first cavity, and a part of the housing 130 is recessed away from the box body 110 to form the second cavity.

[0099] In this embodiment, the pump chamber 140 includes a first cavity and a second cavity. The first cavity and the second cavity are communicated with each other. The first cavity is provided on the box body 110, and the second cavity is provided on the housing 130. That is to say, the box body 110 and the housing 130 each form a part of the pump chamber 140, so that both the box body 110 and the housing 130 make adaptive changes for the formation of the pump chamber 140, avoiding the problem that a relatively high processing requirement may be put forward when one of the box body 110 and the housing 130 forms the pump chamber 140 alone, resulting in a relatively large preparation difficulty. At the same time, during the movement of the pump rotor 150, a part of the box body 110 and a part of the housing 130 may contact the pump rotor 150 to provide a limiting effect on the pump rotor 150. The box body 110 and the housing 130 act together to further ensure the smooth movement of the pump rotor 150.

[0100] Further, as Figure 6 shown, one of the box body 110 and the housing 130 has a limiting groove, and a part of the other of the box body 110 and the housing 130 extends into the limiting groove.

[0101] In this embodiment, considering that the pump rotor 150 rotates within the pump chamber 140 formed by the housing 110 and the casing 130, in order to ensure the reliable connection performance between the housing 110 and the casing 130, a limiting groove is provided on one of the housing 110 and the casing 130, the notch of the limiting groove faces the other of the housing 110 and the casing 130, and a part of the other of the housing 110 and the casing 130 extends into the limiting groove, so that the housing 110 and the casing 130 are reliably connected. When the pump rotor 150 rotates in the pump chamber 140, the connection performance between the housing 110 and the casing 130 is excellent, and the two will not undergo relative displacement along with the movement of the pump rotor 150.

[0102] Specifically, the limiting groove is provided on the housing 110, and a part of the casing 130 extends into the limiting groove on the housing 110, and the two cooperate with each other to achieve stable positioning. Alternatively, the limiting groove is provided on the casing 130, and a part of the housing 110 extends into the limiting groove on the casing 130, thereby realizing the positioning between the housing 110 and the casing 130.

[0103] Furthermore, as Figure 6 shown, the limiting groove is provided on the housing 110, and a part of the casing 130 extends towards the housing 110 to form a limiting flange 131, and the limiting flange 131 is located within the limiting groove.

[0104] In this embodiment, the limiting groove is provided on the housing 110, and the notch of the limiting groove faces the casing 130, which facilitates the assembly of the casing 130 and the housing 110. Among them, a part of the casing 130 extends towards the housing 110 to form a limiting flange 131, and the limiting flange 131 is located within the limiting groove, thereby realizing the positioning and installation of the housing 110 and the casing 130.

[0105] It should be noted that the provision of the limiting groove and the limiting flange 131 can achieve the pre-positioning function between the housing 110 and the casing 130, and can also achieve the locking function. The specific structures of the limiting groove and the limiting flange 131 are adjusted according to actual requirements.

[0106] For example, when realizing the pre-positioning function, after the limiting flange 131 extends into the limiting groove, it can then be locked by other locking structures. When the locking structure has not been locked yet, the limiting flange 131 can still be disengaged from the limiting groove.

[0107] If the limiting groove and the limiting flange 131 can achieve the locking function, then once the limiting flange 131 extends into the limiting groove, the limiting flange 131 cannot be disengaged from the limiting groove anymore, and the two engage with each other to closely combine the housing 110 and the casing 130, ensuring the overall structural stability of the pump assembly 100.

[0108] Further, the limiting groove can be an annular groove, and the limiting flange 131 is an annular boss. Alternatively, the limiting groove can be a plurality of spaced-apart grooves, and correspondingly, the limiting flange 131 is a plurality of bosses, and each boss is correspondingly installed in one groove. Among them, the plurality of bosses can be arranged asymmetrically, and correspondingly, the limiting grooves are also arranged asymmetrically on the box body 110, which can ensure the precise assembly of the box body 110 and the housing 130, and there is no possibility of misalignment or misinstallation.

[0109] Further, as Figures 1 to 6 shown, the box body 110 has a mounting surface that contacts the housing 130. The pump assembly 100 further includes a seal 160, and the seal 160 is provided between the mounting surface of the box body 110 and the housing 130.

[0110] In this embodiment, since the pump chamber 140 is located between the box body 110 and the housing 130, under the action of the pump rotor 150, the working medium will complete the pressurization process in the pump chamber 140. For the working medium, there is a possibility of leaking along the gap between the box body 110 and the housing 130. Therefore, a seal 160 is provided between the box body 110 and the housing 130, and the seal 160 can prevent the working medium in the pump chamber 140 from leaking and flowing away, avoiding affecting the pumping efficiency.

[0111] Among them, the seal 160 can be an O-ring, a gasket, glue sealing, etc.

[0112] Further, as Figure 2 shown, a part of one of the housing 130 and the box body 110 is recessed in a direction away from the other of the housing 130 and the box body 110 to form a sealing groove 132, and the seal 160 is located in the sealing groove 132.

[0113] In this embodiment, the box body 110 has a mounting surface that can contact the housing 130. A part of the housing 130 is recessed in a direction away from the mounting surface, thereby forming a sealing groove 132, or a part of the mounting surface of the box body 110 is recessed in a direction away from the housing 130 to form a sealing groove 132. A part of the seal 160 is located in the sealing groove 132, thereby realizing the precise positioning and installation of the seal 160, and at the same time, it can also prevent the seal 160 from moving between the housing 130 and the box body 110 and causing seal failure.

[0114] Among them, a part of the housing 130 forms the sealing groove 132 because the housing 130 is relatively small in volume compared to the box body 110, which is convenient for processing.

[0115] It should be noted that a part of the seal 160 is located in the seal groove 132, and a part of the seal 160 is pressed between the box body 110 and the housing 130, so as to provide reliable sealing performance, ensure that the working medium in the pump chamber 140 does not leak, and ensure the pumping efficiency.

[0116] Furthermore, as Figure 1 and Figure 4 shown, the mounting surface includes a first mounting surface and a second mounting surface with an included angle. The seal 160 includes a first seal portion 161 and a second seal portion 162. The first seal portion 161 is located between the first mounting surface and the housing 130, and the second seal portion 162 is located between the second mounting surface and the housing 130.

[0117] In this embodiment, the mounting surface of the box body 110 includes a first mounting surface and a second mounting surface, and there is an included angle between the first mounting surface and the second mounting surface, that is, the first mounting surface and the second mounting surface are not coplanar. A first seal portion 161 is provided between the first mounting surface and the housing 130, and a second seal portion 162 is provided between the second mounting surface and the housing 130. The first seal portion 161 and the second seal portion 162 can form a double sealing barrier.

[0118] For example, the first seal portion 161 is arranged closer to the pump chamber 140 than the second seal portion 162. When the working medium in the pump chamber 140 leaks along the first mounting surface, the working medium will first encounter the obstruction of the first seal portion 161. When the first seal portion 161 fails to obstruct the working medium, the working medium will continue to leak along the first mounting surface. Since there is an included angle between the first mounting surface and the second mounting surface, when the working medium extends from the first mounting surface to the second mounting surface, it first has to overcome the resistance brought by the included angle, and it is difficult for the working medium to extend to the second mounting surface. At the same time, a second seal portion 162 is also provided on the second mounting surface to block the working medium. Then, under the double barrier of the first seal portion 161 and the second seal portion 162, it is impossible for the working medium to leak from the gap between the box body 110 and the housing 130.

[0119] Furthermore, as Figures 1 to 6 shown, the liquid passing channel 120 includes a liquid inlet channel 121 and a liquid outlet channel 122. The liquid inlet channel 121 is provided on the box body 110, and the liquid inlet channel 121 is respectively communicated with the pump chamber 140 and the accommodation chamber. The liquid outlet channel 122 is arranged on the box body 110 at an interval from the liquid inlet channel 121, and the liquid outlet channel 122 is respectively communicated with the pump chamber 140 and the accommodation chamber.

[0120] In this embodiment, the liquid passing channel 120 includes a liquid inlet channel 121 and a liquid outlet channel 122 that are spaced apart on the box body 110. The liquid inlet channel 121 and the liquid outlet channel 122 are respectively communicated with the pump chamber 140 and the accommodation chamber. The working medium can enter the pump chamber 140 through the liquid inlet channel 121, and after being pressurized by the action of the pump rotor 150 in the pump chamber 140, the pressurized working medium can return to the accommodation chamber through the liquid outlet channel 122.

[0121] Wherein, when the box body 110 is a gearbox, after the low-pressure grease enters the pump chamber 140 through the liquid inlet channel 121, the pressurization process is completed under the action of the pump rotor 150 to form pressurized grease, and the pressurized grease is conveyed from the pump chamber 140 to the accommodation chamber through the liquid outlet channel 122 to lubricate the transmission components in the accommodation chamber.

[0122] Wherein, when the box body 110 is a water tank, after the low-pressure water enters the pump chamber 140 through the liquid inlet channel 121, the pressurization process is completed under the action of the pump rotor 150 to form high-pressure water, and the high-pressure water is conveyed from the pump chamber 140 to the accommodation chamber through the liquid outlet channel 122.

[0123] Further, as Figure 3 、 Figure 4 and Figure 5 shown, the extending directions of the liquid inlet channel 121 and the liquid outlet channel 122 are the same.

[0124] In this embodiment, the extending directions of the liquid inlet channel 121 and the liquid outlet channel 122 are the same, that is, both the liquid inlet channel 121 and the liquid outlet channel 122 are axially extended and provided on the box body 110, or both the liquid inlet channel 121 and the liquid outlet channel 122 are radially extended and provided on the box body 110. It can be adaptively adjusted according to the layout requirements of the pump chamber 140 formed between the housing 130 and the box body 110.

[0125] Further, as Figure 1 、 Figure 2 and Figure 6 shown, there is an included angle between the extending directions of the liquid inlet channel 121 and the liquid outlet channel 122.

[0126] In this embodiment, the extending directions of the liquid inlet channel 121 and the liquid outlet channel 122 are different, and there is an included angle between them. For example, one of the liquid inlet channel 121 and the liquid outlet channel 122 extends axially, and the other extends radially. Specifically, the liquid inlet channel 121 extends axially, and the liquid outlet channel 122 extends radially.

[0127] Further, the pump assembly 100 further includes a filter, and the filter is disposed in the liquid outlet channel 122 and / or the liquid inlet channel 121.

[0128] In this embodiment, the pump assembly 100 also includes a filter, which is arranged in the liquid outlet channel 122. When the pressurized working medium flows from the pump chamber 140 to the containing chamber, the filter can filter impurities in the pressurized working medium to prevent the impurities from entering the containing chamber.

[0129] Furthermore, a filter is also provided in the liquid inlet channel 121 to prevent impurities in the low-pressure working medium in the accommodating chamber from flowing into the pump chamber 140 through the liquid inlet channel 121 and causing damage to the pump rotor 150 and directly affecting the normal pressurization process of the working medium.

[0130] Furthermore, the filter is not only arranged in the liquid inlet channel 121, but also in the liquid outlet channel 122. The setting of the filter can make the accommodating chamber and the pump chamber 140 as two relatively independent chambers, and only allow the working medium to flow smoothly in the two chambers, while all other impurities are not allowed to circulate between the accommodating chamber and the pump chamber 140. Once impurities are generated in one of the accommodating chamber and the pump chamber 140 due to long-term operation, the impurities will remain in the chamber and will not circulate to the other chamber through the liquid passage 120, thereby extending the service life of the pump assembly 100.

[0131] Furthermore, if Figures 1 to 6 As shown, the pump assembly 100 also includes a driving portion 170, which is disposed on the casing 130. The driving portion 170 is located on the side of the pump rotor 150 that is away from the casing 110. The driving portion 170 is connected to the pump rotor 150, wherein the pump rotor 150 includes a cycloidal rotor or an impeller or a gear or a vortex disk.

[0132] In this embodiment, the pump assembly 100 also includes a driving portion 170, which is disposed in the casing 130. The driving portion 170 is located on the side of the pump rotor 150 that is away from the casing 110. The driving portion 170 is connected to the pump rotor 150. The driving portion 170 is used to drive the pump rotor 150 to rotate relative to the casing 130, thereby pressurizing the working medium in the pump chamber 140.

[0133] Specifically, the driving unit 170 is a motor, a driving shaft of the motor is connected to the pump rotor 150 , and the driving shaft can drive the pump rotor 150 to rotate.

[0134] Specifically, the pump rotor 150 includes a cycloid rotor, and the working medium is grease. Specifically, the cycloid rotor includes a cycloid inner rotor (inner rotor) and a cycloid outer rotor (outer rotor). The inner rotor is engaged with the drive shaft, and the outer rotor is disposed outside the inner rotor. The inner rotor and the outer rotor are meshed with each other, and the inner rotor can drive the outer rotor to rotate, that is, the drive shaft can drive the outer rotor to rotate through the inner rotor. The inner rotor and the outer rotor construct a pressure chamber, and the pressure chamber includes a high-pressure chamber and a low-pressure chamber. The pressure borne by the high-pressure chamber is greater than that borne by the low-pressure chamber. Among them, the low-pressure chamber is communicated with the liquid inlet passage 121, and the high-pressure chamber is communicated with the liquid outlet passage 122.

[0135] Specifically, the pump rotor 150 includes an impeller, and the working medium is water. Specifically, the impeller is disposed on the drive shaft, and under the action of the drive shaft, the impeller rotates, thereby pressurizing the water in the pump chamber 140, so that the pressurized water will flow out through the liquid outlet passage 122. Among them, the impeller can be of a centrifugal, rotor or vortex structure, etc.

[0136] Among them, the pump rotor 150 is driven by the drive shaft to rotate, so as to perform work on the working medium in the form of a fluid, and thus realize the pressurization process.

[0137] Further, as Figure 7 shown, the pump assembly 100 further includes a first assembly hole 133, a second assembly hole 111 and a fastener. The first assembly hole 133 is provided on the housing 130, the second assembly hole 111 is provided on the box body 110, and the fastener passes through the first assembly hole 133 and the second assembly hole 111 to lock the housing 130 and the box body 110.

[0138] In this embodiment, the pump assembly 100 further includes a first assembly hole 133, a second assembly hole 111 and a fastener. The first assembly hole 133 is provided on the housing 130, the second assembly hole 111 is provided on the box body 110. The first assembly hole 133 and the second assembly hole 111 are correspondingly arranged, and the fastener passes through the first assembly hole 133 and the second assembly hole 111, thereby realizing the locking connection between the box body 110 and the housing 130.

[0139] It is worth noting that the cooperation between the limiting flange 131 and the limiting groove mentioned in the foregoing solution can realize the preliminary pre-positioning function, and the fastener, the first assembly hole 133 and the second assembly hole 111 belong to the locking structure, which can reliably connect the box body 110 and the housing 130.

[0140] Specifically, the number of the first assembly hole 133, the second assembly hole 111 and the fastener is multiple and in one-to-one correspondence. Among them, the multiple first assembly holes 133 are evenly spaced on the housing 130, so as to realize all-round positioning and installation, and the structural stability is better.

[0141] According to an embodiment of the second aspect of the present application, a vehicle is provided, which includes the pump assembly 100 provided by any of the above designs.

[0142] The vehicle provided by the present application includes the pump assembly 100 provided by any of the above designs, and thus has all the beneficial effects of the pump assembly 100, which will not be elaborated here.

[0143] It is worth noting that the vehicle can be a new energy vehicle. Among them, new energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc. Of course, the vehicle can also be a traditional fuel vehicle.

[0144] Furthermore, the housing 110 of the pump assembly 100 includes a gearbox, and the vehicle further includes a speed-changing assembly located in the accommodating cavity of the gearbox; and / or, the housing 110 of the pump assembly 100 includes a water tank.

[0145] In this embodiment, the housing 110 of the pump assembly 100 can be a gearbox, and a speed-changing assembly is provided in the accommodating cavity of the gearbox. The housing 130 of the pump assembly 100 is connected to the gearbox. Low-pressure grease enters the pump chamber 140 through the liquid inlet channel 121, and is compressed into high-pressure grease under the action of the gear rotor, and then flows into the accommodating cavity through the liquid outlet channel 122 for use by the speed-changing assembly.

[0146] Wherein, the housing 110 of the pump assembly 100 can also be a water tank, and water is contained in the accommodating cavity of the water tank. The housing 130 of the pump assembly 100 is connected to the water tank. Low-pressure water enters the pump chamber 140 through the liquid inlet channel 121, and is compressed into high-pressure water under the action of the rotating impeller, and then flows into the interior of the water tank through the liquid outlet channel 122.

[0147] Furthermore, the vehicle includes a housing and a main drive motor. The housing is connected to the gearbox, the main drive motor is located in the housing, and the rotating shaft of the main drive motor is connected to the speed-changing assembly.

[0148] In this embodiment, the vehicle includes a housing and a main drive motor. The main drive motor is housed in the housing, the housing is connected to the gearbox, and the rotating shaft of the main drive motor is connected to the speed-changing assembly. Among them, the housing of the main drive motor, the gearbox and the housing 130 are connected to form a three-in-one structure, making the internal structure layout of the vehicle more compact and the layout more reasonable.

[0149] It is worth noting that, as Figures 1 to 7As shown, the pump assembly 100 includes a housing 110, a liquid passage 120, a casing 130, and a pump rotor 150. The housing 110 includes a receiving cavity. The liquid passage 120 is provided on the housing 110 and is in communication with the receiving cavity. The casing 130 is connected to the housing 110, and there is a pump chamber 140 between the casing 130 and the housing 110. The pump chamber 140 is in communication with the liquid passage 120. The pump rotor 150 is located in the pump chamber 140 and can move relative to the casing 130, so that the working medium in the pump chamber 140 is pressurized and then circulates in the pump chamber 140, the liquid passage 120, and the receiving cavity.

[0150] It should be noted that the housing 110 can be a gearbox, and a speed-changing assembly is accommodated in the receiving cavity of the gearbox, and the working medium is grease. Or, the housing 110 is a water tank, and water is accommodated in the receiving cavity of the water tank, and the working medium is water. The basic function of the housing 110 is the function of its own receiving cavity, which is used to accommodate the speed-changing assembly or hold the working medium.

[0151] In the pump assembly 100 of the present application, the casing 130 and the housing 110 are connected to form a pump chamber 140 for accommodating the pump rotor 150. The housing 110 not only has its own basic function, but also can form the function of the pump chamber 140 with the casing 130, that is, the housing 110 has a dual function, high integration, low cost, and reduces the number of components, thereby simplifying the overall structure of the pump assembly 100. Compared with the related art in which a pressure chamber is formed by a casing and a pump cover, in the present application, the pump cover structure is omitted, the number of components is reduced, the weight of the whole machine is reduced, the production cost is reduced, there is no assembly requirement for the pump cover and the casing, and the assembly efficiency can be effectively improved and the production rhythm can be accelerated.

[0152] At the same time, in the related art, after the casing and the pump cover of the pump are assembled, they are then installed on the component to be assembled. For the whole product, the casing, the pump cover, and the component to be assembled will all occupy a part of the axial height. However, in the pump assembly 100 of the present application, the casing 130 is directly connected to the housing 110 to enclose and form the pump chamber 140. After removing the pump cover in the related art, the normal operation of the pump rotor 150 can still be realized, and the overall axial height of the product can be effectively reduced, adapting to the development trend of being thinner, lighter, and smaller.

[0153] Furthermore, as Figure 1 、 Figure 2 and Figure 3 shown, along the direction away from the casing 130, a part of the housing 110 is recessed to form the pump chamber 140. That is to say, the housing 110 is deformed alone to form the pump chamber 140, and the structure of the casing 130 does not need to be changed too much, and only needs to be installed on the housing 110, so that the original pump product only needs to stop processing the pump cover and can be applied to the new product, and the general application range is relatively wide.

[0154] As can be imagined, due to the high manufacturing cost of pump products, the present design improves the structure of the box body 110 to achieve the purpose of enclosing with the casing 130 to form the pump chamber 140, and tries not to change or change the structure of the casing 130 as little as possible, so that the casing 130 on the original production line can continue to be used.

[0155] Furthermore, if Figure 4 and Figure 5 As shown, along the direction away from the box body 110, a portion of the casing 130 is recessed to form the pump chamber 140. That is to say, the casing 130 is deformed alone to form the pump chamber 140, and the structure of the box body 110 does not need to be changed too much. It only needs to be fixedly installed with the casing 130, which has low requirements on the structure of the box body 110 and improves the scope of application of the box body 110.

[0156] like Figure 6 As shown, further, the pump chamber 140 includes a first cavity and a second cavity, the first cavity and the second cavity are interconnected, the first cavity is arranged on the housing 110, and the second cavity is arranged on the casing 130, that is, the housing 110 and the casing 130 each form a part of the pump chamber 140, so that the housing 110 and the casing 130 are both adapted to the formation of the pump chamber 140, avoiding that one of the housing 110 and the casing 130 forms the pump chamber 140 alone, which may put forward higher requirements on the processing technology and cause the problem of greater difficulty in preparation. At the same time, during the movement of the pump rotor 150, a part of the housing 110 and a part of the casing 130 may contact the pump rotor 150 to provide a limiting effect on the pump rotor 150, and the housing 110 and the casing 130 work together to further ensure the smooth movement of the pump rotor 150.

[0157] Furthermore, if Figure 6 As shown, considering that the pump rotor 150 rotates in the pump cavity 140 formed by the case 110 and the casing 130, in order to ensure the reliable connection performance between the case 110 and the casing 130, a limiting groove is provided on one of the case 110 and the casing 130, and the notch of the limiting groove faces the other of the case 110 and the casing 130, and a part of the other of the case 110 and the casing 130 will extend into the limiting groove, so that the case 110 and the casing 130 are reliably connected. When the pump rotor 150 rotates in the pump cavity 140, the connection performance between the case 110 and the casing 130 is excellent, and the two will not be relatively displaced with the movement of the pump rotor 150.

[0158] Specifically, the limiting groove is provided on the box body 110, and a part of the casing 130 extends into the limiting groove on the box body 110, and the two cooperate with each other to achieve stable positioning. Or, the limiting groove is provided on the casing 130, and a part of the box body 110 extends into the limiting groove on the casing 130, so as to determine the position between the box body 110 and the casing 130.

[0159] Furthermore, as Figure 6 shown, the limiting groove is provided on the box body 110, and the notch of the limiting groove faces the casing 130, so as to facilitate the assembly of the casing 130 and the box body 110. Wherein, a part of the casing 130 extends towards the box body 110 to form a limiting flange 131, and the limiting flange 131 is located in the limiting groove, so as to realize the positioning and installation of the box body 110 and the casing 130.

[0160] It should be noted that the setting of the limiting groove and the limiting flange 131 can realize the pre-positioning function between the box body 110 and the casing 130, and can also realize the locking function, and the specific structures of the limiting groove and the limiting flange 131 are adjusted according to actual needs.

[0161] For example, when realizing the pre-positioning function, after the limiting flange 131 extends into the limiting groove, it can be locked by other locking structures. When the locking structure is not locked yet, the limiting flange 131 can still be disengaged from the limiting groove.

[0162] When the limiting groove and the limiting flange 131 can realize the locking function, once the limiting flange 131 extends into the limiting groove, the limiting flange 131 cannot be disengaged from the limiting groove anymore, and the two bite each other to make the box body 110 and the casing 130 closely combined, ensuring the overall structural stability of the pump assembly 100.

[0163] Furthermore, the limiting groove can be an annular groove, and the limiting flange 131 is an annular boss. Or, the limiting groove can be a plurality of spaced-apart grooves, and correspondingly, the limiting flange 131 is a plurality of bosses, and each boss is correspondingly installed in a groove body. Among them, the plurality of bosses can be arranged asymmetrically, and correspondingly, the limiting groove is also arranged asymmetrically on the box body 110, which can ensure the precise assembly of the box body 110 and the casing 130, and there is no possibility of misalignment or wrong installation.

[0164] Furthermore, as Figures 1 to 6 shown, since the pump chamber 140 is located between the box body 110 and the casing 130, under the action of the pump rotor 150, the working medium will complete the pressurization process in the pump chamber 140. For the working medium, there is a possibility of leaking along the gap between the box body 110 and the casing 130. Therefore, a seal 160 is provided between the box body 110 and the casing 130, and the seal 160 can prevent the working medium in the pump chamber 140 from leaking and flowing away, avoiding affecting the pumping efficiency.

[0165] Among them, the seal 160 can be an O-ring, a gasket, a sealed joint with glue, etc.

[0166] Furthermore, as Figure 2 shown, the housing 110 has a mounting surface that can contact the casing 130. A part of the casing 130 is recessed away from the mounting surface to form a sealing groove 132. A part of the seal 160 is located in the sealing groove 132, thereby realizing the precise positioning and installation of the seal 160. At the same time, it can also prevent the seal 160 from moving between the casing 130 and the housing 110, which may cause sealing failure.

[0167] Among them, a part of the casing 130 forms the sealing groove 132 because the casing 130 is relatively small in volume compared to the housing 110, which is convenient for processing.

[0168] It should be noted that a part of the seal 160 is located in the sealing groove 132, and a part of the seal 160 is extruded between the housing 110 and the casing 130, thereby being able to provide reliable sealing performance, ensuring that the working medium in the pump chamber 140 does not leak, and ensuring the pumping efficiency.

[0169] Furthermore, as Figure 1 and Figure 4 shown, the first sealing portion 161 is arranged closer to the pump chamber 140 than the second sealing portion 162. When the working medium in the pump chamber 140 leaks along the first mounting surface, the working medium will first encounter the obstruction of the first sealing portion 161. When the first sealing portion 161 fails to obstruct the working medium, the working medium will continue to leak along the first mounting surface. Since there is an included angle between the first mounting surface and the second mounting surface, when the working medium extends from the first mounting surface to the second mounting surface, it first has to overcome the resistance brought by the included angle, and it is very difficult for the working medium to extend to the second mounting surface. At the same time, the second sealing portion 162 is also provided on the second mounting surface to block the working medium. Therefore, under the double barriers of the first sealing portion 161 and the second sealing portion 162, it is impossible for the working medium to leak from the gap between the housing 110 and the casing 130.

[0170] Furthermore, as Figures 1 to 6 shown, the liquid passing channel 120 includes a liquid inlet channel 121 and a liquid outlet channel 122 that are spaced apart on the housing 110. The liquid inlet channel 121 and the liquid outlet channel 122 are respectively communicated with the pump chamber 140 and the accommodation chamber. The working medium can enter the pump chamber 140 through the liquid inlet channel 121, and after being pressurized by the action of the pump rotor 150 in the pump chamber 140, the pressurized working medium can return to the accommodation chamber through the liquid outlet channel 122.

[0171] Among them, when the housing 110 is a transmission, after the low-pressure grease enters the pump chamber 140 through the liquid inlet channel 121, the pressurization process is completed under the action of the pump rotor 150 to form pressurized grease. The pressurized grease is conveyed from the pump chamber 140 to the accommodation chamber through the liquid outlet channel 122 to lubricate the transmission components in the accommodation chamber.

[0172] Among them, when the housing 110 is a water tank, after the low-pressure water enters the pump chamber 140 through the liquid inlet channel 121, the pressurization process is completed under the action of the pump rotor 150 to form high-pressure water. The high-pressure water is conveyed from the pump chamber 140 to the accommodation chamber through the liquid outlet channel 122.

[0173] Further, as Figure 3 、 Figure 4 and Figure 5 shown, the extending direction of the liquid inlet channel 121 is the same as that of the liquid outlet channel 122, that is, both the liquid inlet channel 121 and the liquid outlet channel 122 are axially extended and arranged on the housing 110, or both the liquid inlet channel 121 and the liquid outlet channel 122 are radially extended and arranged on the housing 110. It can be adaptively adjusted according to the arrangement requirements of the pump chamber 140 formed between the housing 130 and the housing 110.

[0174] Further, as Figure 1 、 Figure 2 and Figure 6 shown, the extending direction of the liquid inlet channel 121 is different from that of the liquid outlet channel 122, and there is an included angle between them. For example, one of the liquid inlet channel 121 and the liquid outlet channel 122 extends axially, and the other extends radially. Specifically, the liquid inlet channel 121 extends axially, and the liquid outlet channel 122 extends radially.

[0175] Further, as Figures 1 to 6 shown, the pump assembly 100 further includes a driving part 170. The driving part 170 is arranged in the housing 130. The driving part 170 is located on the side of the pump rotor 150 away from the housing 110. The driving part 170 is connected to the pump rotor 150. The driving part 170 is used to drive the pump rotor 150 to rotate relative to the housing 130, so as to pressurize the working medium in the pump chamber 140.

[0176] Specifically, the driving part 170 is a motor. The driving shaft of the motor is connected to the pump rotor 150, and the driving shaft can drive the pump rotor 150 to rotate.

[0177] Specifically, the pump rotor 150 includes a cycloidal rotor, and the working medium is grease. Specifically, the gear rotor includes a cycloidal inner rotor (hereinafter referred to as the inner rotor) and a cycloidal outer rotor (hereinafter referred to as the outer rotor). The inner rotor is engaged with the drive shaft. The outer rotor is arranged outside the inner rotor. The inner rotor and the outer rotor mesh with each other. The inner rotor can drive the outer rotor to rotate, that is, the drive shaft can drive the outer rotor to rotate through the inner rotor. The inner rotor and the outer rotor construct a pressure chamber, which includes a high-pressure chamber and a low-pressure chamber. The pressure borne by the high-pressure chamber is greater than that borne by the low-pressure chamber. Among them, the low-pressure chamber is communicated with the liquid inlet channel 121, and the high-pressure chamber is communicated with the liquid outlet channel 122.

[0178] Specifically, the pump rotor 150 includes an impeller, and the working medium is water. Specifically, the impeller is arranged on the drive shaft. Under the action of the drive shaft, the impeller rotates, thereby pressurizing the water in the pump chamber 140, so that the pressurized water will flow out through the liquid outlet channel 122.

[0179] Among them, the pump rotor 150 is driven by the drive shaft to rotate, so as to perform work on the working medium in the form of fluid, and further realize the pressurization process. Specifically, the pump rotor 150 can also be of gear type, centrifugal type, vane type, scroll type, etc.

[0180] Further, as Figure 7 shown, the pump assembly 100 further includes a first assembly hole 133, a second assembly hole 111 and a fastener. The first assembly hole 133 is provided on the housing 130, and the second assembly hole 111 is provided on the box body 110. The first assembly hole 133 and the second assembly hole 111 are correspondingly arranged. The fastener passes through the first assembly hole 133 and the second assembly hole 111, thereby realizing the locking connection between the box body 110 and the housing 130.

[0181] It should be noted that the cooperation between the limiting flange 131 and the limiting groove mentioned in the foregoing solution can realize the preliminary pre-positioning function. The fastener, the first assembly hole 133 and the second assembly hole 111 belong to the locking structure, which can reliably connect the box body 110 and the housing 130.

[0182] Specifically, the number of the first assembly hole 133, the second assembly hole 111 and the fastener is a plurality of corresponding ones. Among them, the plurality of first assembly holes 133 are evenly spaced on the housing 130, so as to realize all-round positioning and installation, and the structural stability is better.

[0183] In this application, the term "a plurality of" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "coupled" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0184] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0185] The foregoing are only the preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, various modifications and variations can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A pump assembly, characterized in that, Comprising: A box body, the box body including a receiving cavity; A liquid passage, provided on the box body, the liquid passage communicating with the receiving cavity; A housing, connected to the box body, there being a pump cavity between the housing and the box body, the pump cavity communicating with the liquid passage; A pump rotor, located in the pump cavity, the pump rotor being capable of moving relative to the housing so that the working medium circulates in the receiving cavity, the liquid passage and the pump cavity; The box body includes a gearbox or a water tank; The box body has a mounting surface in contact with the housing; A seal, provided between the mounting surface of the box body and the housing; The mounting surface includes a first mounting surface and a second mounting surface having an included angle; The seal includes a first seal portion and a second seal portion, the first seal portion being located between the first mounting surface and the housing, and the second seal portion being located between the second mounting surface and the housing; One of the box body and the housing has a limiting groove, and a part of the other of the box body and the housing extends into the limiting groove; The pump assembly further includes: A first assembly hole, provided on the housing; A second assembly hole, provided on the box body; A fastener, the fastener passing through the first assembly hole and the second assembly hole to lock the housing and the box body; Wherein, the number of the first assembly holes, the second assembly holes and the fasteners is a plurality of corresponding ones, and the plurality of first assembly holes are evenly spaced on the housing.

2. The pump assembly according to claim 1, wherein A part of the box body is recessed in a direction away from the housing to form the pump cavity.

3. The pump assembly according to claim 1, wherein A part of the housing is recessed in a direction away from the box body to form the pump cavity.

4. The pump assembly according to claim 1, wherein The pump cavity includes a first cavity and a second cavity that communicate with each other. A part of the box body is recessed in a direction away from the housing to form the first cavity, and a part of the housing is recessed in a direction away from the box body to form the second cavity.

5. The pump assembly according to any one of claims 1 to 4, wherein The limiting groove is provided on the box body, and a part of the housing extends towards the box body to form a limiting flange, and the limiting flange is located in the limiting groove.

6. The pump assembly according to any one of claims 1 to 4, wherein A part of one of the housing and the box body is recessed in a direction away from the other of the housing and the box body to form a sealing groove, and the seal is located in the sealing groove.

7. The pump assembly according to any one of claims 1 to 4, characterized in that, The liquid passage includes: An inlet passage, provided on the box body and communicating with the pump cavity and the receiving cavity respectively; An outlet passage, provided on the box body at an interval from the inlet passage, the outlet passage communicating with the pump cavity and the receiving cavity respectively.

8. The pump assembly according to claim 7, wherein The extending direction of the inlet passage is the same as the extending direction of the outlet passage.

9. The pump assembly according to claim 7, wherein There is an included angle between the extending direction of the liquid inlet channel and the extending direction of the liquid outlet channel.

10. The pump assembly according to claim 7, characterized in that, The pump assembly further includes: A filter disposed in the liquid outlet channel and / or the liquid inlet channel.

11. The pump assembly according to any one of claims 1 to 4, characterized in that, The pump assembly further includes: A driving part disposed on the housing and located on the side of the pump rotor away from the box body, and the driving part is connected to the pump rotor.

12. A vehicle, characterized in that, Comprising: The pump assembly according to any one of claims 1 to 11.

13. The vehicle according to claim 12, wherein The box body of the pump assembly includes a gearbox, and the vehicle further includes a speed change assembly, and the speed change assembly is located in the accommodating cavity of the gearbox; and / or The box body of the pump assembly includes a water tank.

14. The vehicle according to claim 13, characterized in that, The vehicle includes: A housing, and the housing is connected to the gearbox; A main drive motor located in the housing, and a rotating shaft of the main drive motor is connected to the speed change assembly.

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