Double-acting vane pump and vehicle

Abstract

The invention provides a double-acting vane pump and a vehicle, relates to the technical field of oil pumps, and aims at solving the problems that an existing oil pump for the vehicle is complex in structure, high in assembly precision requirement and large in occupied space to a certain extent. The invention provides a double-acting vane pump. The double-acting vane pump comprises an oil pump mechanism and a driving mechanism, the oil pump mechanism comprises a first shell assembly and an impeller assembly, a first cavity is formed in the first shell assembly, the impeller assembly is arranged in the first cavity, the driving mechanism comprises a driving assembly and a second shell assembly, a second cavity is formed in the second shell assembly, and the driving assembly is arranged in the second cavity. An output shaft of the driving assembly penetrates through the second shell assembly and is connected with the impeller assembly; a first oil inlet part, a liquid passing part, a second oil inlet part and a liquid outlet part are sequentially formed in the first cavity in the rotating direction of the impeller assembly, and the liquid passing part and the liquid outlet part communicate with the second cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pumps, and in particular to a double-acting vane pump and a vehicle. Background Art

[0002] At present, vehicle oil pumps mainly use twin-rotor pumps, that is, two independent rotor systems are used to achieve oil supply under different working conditions.

[0003] The twin-rotor pump has two rotors, which requires a large amount of space for the pump body. In addition, although the two rotors need to operate independently, they need to be integrated into one structure. The assembly space that a vehicle can provide is relatively small, which requires high assembly accuracy for the two structures and makes assembly more difficult.

[0004] Therefore, there is an urgent need to provide a double-acting vane pump and a vehicle to solve the problems existing in the prior art to a certain extent. Summary of the invention

[0005] The object of the present invention is to provide a double-acting vane pump and a vehicle, so as to solve the problems of the existing vehicle oil pump having a complex structure, high assembly precision requirements and large space occupation to a certain extent.

[0006] A double-acting vane pump provided by the present invention comprises an oil pump mechanism and a driving mechanism; the oil pump mechanism comprises a first housing assembly and an impeller assembly, the first housing assembly forms a first cavity, the impeller assembly is arranged in the first cavity, the driving mechanism comprises a driving assembly and a second housing assembly, the second housing assembly forms a second cavity, the driving assembly is arranged in the second cavity, and the output shaft of the driving assembly passes through the second housing assembly and is connected to the impeller assembly; a first oil inlet portion, a liquid passage portion, a second oil inlet portion and a liquid outlet portion are sequentially formed in the first cavity and along the rotation direction of the impeller assembly, the liquid passage portion and the liquid outlet portion are communicated with the second cavity.

[0007] Among them, the first shell assembly includes a first shell body and a first cover plate, the first shell body forms a receiving groove, the first cover plate covers the first shell body and the receiving groove to form the first cavity; the first liquid inlet, the second liquid inlet and the liquid outlet are formed in sequence on the first cover plate along the rotation direction of the impeller assembly, the first shell body forms a first liquid inlet groove, a liquid outlet, a second liquid inlet groove and a positioning outlet in sequence along the rotation direction of the impeller assembly, the first liquid inlet groove corresponds to the first liquid inlet to form the first oil inlet part, the second liquid inlet groove corresponds to the second liquid inlet to form the second oil inlet part, and the positioning outlet corresponds to the liquid outlet to form the liquid outlet part.

[0008] Specifically, the impeller assembly includes an impeller body and a matching piece, the matching piece is ring-mounted, the impeller body is located in the inner ring space of the matching piece, and the impeller body and the matching piece form a first gap and a second gap, the first gap corresponds to connecting the first oil inlet part and the liquid passing part, and the second gap corresponds to connecting the second oil inlet part and the liquid outlet part.

[0009] Furthermore, the contour of the receiving groove is matched with the outer contour of the matching piece, and the matching piece is embedded in the receiving groove.

[0010] Furthermore, the first shell assembly also includes a connecting piece, and the connecting piece passes through the first cover plate and is connected to the first shell body.

[0011] Furthermore, the first shell component also includes a sealing member, and the sealing member is located between the first shell body and the second shell component.

[0012] Wherein, the driving assembly includes a stator, a rotor and an output shaft, the stator and the rotor are both located in the second cavity, and one end of the output shaft is connected to the rotor, and the other end is connected to the impeller assembly.

[0013] Specifically, the second shell assembly includes a second shell body and a second cover plate, the second cover plate is connected to a first position of the second shell body to form the second cavity, and the first shell body is connected to a second position of the second shell body to connect the first cavity with the second cavity.

[0014] Furthermore, the drive assembly also includes a control component and a sealing layer; the second cover plate forms a bearing space, the control component is arranged in the bearing space, the control component includes a main body and a first connecting part, the sealing layer covers the main body, and the sealing layer is sealed and connected to the second cover plate; the stator is connected to the second connecting part, and the first connecting part is plugged into the second connecting part.

[0015] Compared with the prior art, the double-acting vane pump provided by the present invention has the following advantages:

[0016] The double-acting vane pump provided by the present invention comprises an oil pump mechanism and a driving mechanism; the oil pump mechanism comprises a first housing assembly and an impeller assembly, the first housing assembly forms a first cavity, the impeller assembly is arranged in the first cavity, the driving mechanism comprises a driving assembly and a second housing assembly, the second housing assembly forms a second cavity, the driving assembly is arranged in the second cavity, and the output shaft of the driving assembly passes through the second housing assembly and is connected to the impeller assembly; a first oil inlet portion, a liquid passing portion, a second oil inlet portion and a liquid outlet portion are sequentially formed in the first cavity and along the rotation direction of the impeller assembly, and the liquid passing portion and the liquid outlet portion are communicated with the second cavity.

[0017] From this analysis, it can be seen that the first cavity formed by the first shell assembly can provide assembly space for the impeller assembly, and since the oil pump mechanism in the present application adopts an impeller assembly, the flow of oil can be achieved by using a driving assembly to drive the impeller assembly, that is, the flow of oil is achieved by the rotation of the impeller assembly in the first cavity.

[0018] Since the first cavity in the present application is sequentially formed with a first oil inlet, a liquid passage, a second oil inlet and a liquid outlet along the rotation direction of the impeller assembly, and the liquid passage and the liquid outlet are connected to the second cavity, when the oil enters the first cavity from the first oil inlet, it will flow along the rotation direction of the impeller assembly, so that it can enter the second cavity through the liquid passage to cool the drive assembly in the second cavity. Since the liquid outlet is connected to the second cavity, the oil can flow out from the liquid outlet.

[0019] It can be understood that, since the second oil inlet in the present application is at the next position of the liquid portion in the direction of rotation of the impeller, the oil entering from the second oil inlet can only flow toward the oil outlet, and therefore, the oil entering from the second oil inlet does not participate in the cooling of the drive assembly. That is, when the vehicle is in a state where a high oil supply is required, the first oil inlet and the second oil inlet simultaneously supply oil, and the oil entering from the first oil inlet cools the drive assembly while being able to supply oil to the vehicle together with the oil entering from the second oil inlet. When the vehicle is in a state where a high oil supply is not required, the second oil inlet can be closed, and only the first oil inlet is used to supply oil to the vehicle while cooling the drive assembly.

[0020] Since the present application only uses one impeller assembly to achieve adaptation to two working conditions, there is neither high-precision assembly requirement nor high space occupancy. While reducing the size and manufacturing cost of the overall oil pump, the oil supply demand is guaranteed.

[0021] In addition, the present invention also provides a vehicle, comprising the double-acting vane pump described above.

[0022] The double-acting vane pump provided in the present application can be adapted to different power consumption requirements within a limited space, and the manufacturing cost and assembly difficulty of the oil pump used are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 An exploded schematic diagram of an oil pump mechanism in a double-acting vane pump provided in an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of an exploded view of a drive mechanism in a double-acting vane pump provided in an embodiment of the present invention.

[0026] In the figure: 1-first shell body; 101-receiving tank; 1011-first liquid inlet tank; 1012-liquid outlet; 1013-second liquid inlet tank; 1014-alignment outlet; 2-first cover plate; 201-first liquid inlet; 202-second liquid inlet; 203-liquid outlet; 3-connecting piece; 4-impeller body; 5-matching piece; 6-second shell body; 7-second cover plate; 8-stator; 801-second connecting part; 9-rotor; 10-output shaft; 11-control component; 1101-first connecting part; 12-sealing layer; 13-sealing piece. DETAILED DESCRIPTION

[0027] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0028] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0032] For ease of description, spatial relative terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the drawings. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0033] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0034] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0035] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection required by the present application.

[0036] like Figure 1 Combination Figure 2 As shown, the present invention provides a double-acting vane pump, including an oil pump mechanism and a driving mechanism; the oil pump mechanism includes a first housing assembly and an impeller assembly, the first housing assembly forms a first cavity, the impeller assembly is arranged in the first cavity, the driving mechanism includes a driving assembly and a second housing assembly, the second housing assembly forms a second cavity, the driving assembly is arranged in the second cavity, and the output shaft 10 of the driving assembly passes through the second housing assembly and is connected to the impeller assembly; a first oil inlet portion, a liquid passing portion, a second oil inlet portion and a liquid outlet portion are sequentially formed in the first cavity and along the rotation direction of the impeller assembly, and the liquid passing portion and the liquid outlet portion are connected to the second cavity.

[0037] Compared with the prior art, the double-acting vane pump provided by the present invention has the following advantages:

[0038] The double-acting vane pump provided by the present invention can provide an assembly space for the impeller assembly through the first cavity formed by the first housing assembly, and since the oil pump mechanism in the present application adopts the impeller assembly, the flow of oil can be achieved by utilizing the driving assembly to drive the impeller assembly, that is, the flow of oil is achieved by the rotation of the impeller assembly in the first cavity.

[0039] Since the first cavity in the present application is sequentially formed with a first oil inlet, a liquid passage, a second oil inlet and a liquid outlet along the rotation direction of the impeller assembly, and the liquid passage and the liquid outlet are connected to the second cavity, when the oil enters the first cavity from the first oil inlet, it will flow along the rotation direction of the impeller assembly, so that it can enter the second cavity through the liquid passage to cool the drive assembly in the second cavity. Since the liquid outlet is connected to the second cavity, the oil can flow out from the liquid outlet.

[0040] It can be understood that, since the second oil inlet in the present application is at the next position of the liquid portion in the direction of rotation of the impeller, the oil entering from the second oil inlet can only flow toward the oil outlet, and therefore, the oil entering from the second oil inlet does not participate in the cooling of the drive assembly. That is, when the vehicle is in a state where a high oil supply is required, the first oil inlet and the second oil inlet simultaneously supply oil, and the oil entering from the first oil inlet cools the drive assembly while being able to supply oil to the vehicle together with the oil entering from the second oil inlet. When the vehicle is in a state where a high oil supply is not required, the second oil inlet can be closed, and only the first oil inlet is used to supply oil to the vehicle while cooling the drive assembly.

[0041] Since the present application only uses one impeller assembly to achieve adaptation to two working conditions, there is neither high-precision assembly requirement nor high space occupancy. While reducing the size and manufacturing cost of the overall oil pump, the oil supply demand is guaranteed.

[0042] Alternatively, if Figure 1 As shown, the first shell assembly includes a first shell body 1 and a first cover plate 2, the first shell body 1 forms a receiving groove 101, and the first cover plate 2 covers the first shell body 1 and the receiving groove 101 to form a first cavity; the first cover plate 2 forms a first liquid inlet 201, a second liquid inlet 202 and a liquid outlet 203 in sequence along the rotation direction of the impeller assembly, and the first shell body 1 forms a first liquid inlet groove 1011, a liquid outlet 1012, a second liquid inlet groove 1013 and a positioning outlet 1014 in sequence along the rotation direction of the impeller assembly, the first liquid inlet groove 1011 corresponds to the first liquid inlet 201 to form a first oil inlet part, the second liquid inlet groove 1013 corresponds to the second liquid inlet 202 to form a second oil inlet part, and the positioning outlet 1014 corresponds to the liquid outlet 203 to form a liquid outlet part.

[0043] like Figure 1 As shown, the first liquid inlet 1011 and the second liquid inlet 1013 in the present application are both trough structures, which are not connected to the second cavity, and the position corresponding to the liquid port 1012 on the first cover plate 2 is in a closed state. Therefore, when the oil enters the first cavity from the first liquid inlet 201 and the second liquid inlet 202, it can flow along with the impeller assembly, and Figure 1 Based on the perspective, the impeller in the present application rotates in a clockwise direction, so that the oil can flow from the first liquid inlet groove 1011 to the liquid outlet 1012 in the first cavity, and the liquid outlet 1012 can prevent the oil from following the impeller assembly to flow to the second liquid inlet groove 1013. Accordingly, the oil entering from the second liquid inlet 202 flows from the second liquid inlet groove 1013 to the counter-position outlet 1014, and the oil flows out from the liquid outlet 203. It can be understood that since the impeller assembly rotates clockwise, the oil rotates clockwise, thereby preventing the oil in the second liquid inlet groove 1013 from flowing back to the liquid outlet 1012, ensuring the stable flow of the oil.

[0044] Since the first liquid inlet is fully involved in the cooling of the drive assembly, when the vehicle does not need a higher oil output, the second liquid inlet 202 can be closed by using a solenoid valve or other structure that can control the closing or opening of the opening to achieve a single supply and flow of oil.

[0045] Alternatively, if Figure 1 As shown, the impeller assembly in the present application includes an impeller body 4 and a fitting 5, the fitting 5 is ring-mounted, the impeller body 4 is located in the inner ring space of the fitting 5, and the impeller body 4 and the fitting 5 form a first gap and a second gap, the first gap corresponds to connecting the first oil inlet part and the liquid passing part, and the second gap corresponds to connecting the second oil inlet part and the liquid outlet part.

[0046] The matching piece 5 in the present application is approximately of a waist-shaped structure, and the impeller body 4 includes a rotating wheel and a plurality of blades evenly distributed along the circumference of the rotating wheel, and the overall outer contour of the impeller body 4 is circular, so that it can form a first gap and a second gap with the matching piece 5. Accordingly, through the formed first gap and second gap, and the first gap in the present application corresponds to connecting the first oil inlet part and the liquid passing part, and the second gap corresponds to connecting the second oil inlet part and the oil outlet part, therefore, the pressurization and flow of the oil can be achieved.

[0047] It should be noted that the first gap and the second gap in the present application are arranged opposite to each other, and the impeller body 4 and the fitting 5 are sealed except for the positions where the first gap and the second gap are formed, so that the oil in the first gap and the oil in the second gap can be prevented from flowing into each other to a certain extent. Therefore, when the second liquid inlet 202 is closed, the second gap is equivalent to an idling state without oil.

[0048] It is understandable that if Figure 1 As shown, the contour of the receiving groove 101 in the present application is adapted to the outer contour of the matching component 5, and the matching component 5 is embedded in the receiving groove 101, thereby preventing the matching component 5 from moving during the rotation of the impeller assembly and causing leakage.

[0049] Alternatively, if Figure 1 As shown, the first shell assembly in the present application further includes a connecting member 3 , and the connecting member 3 passes through the first cover plate 2 and is connected to the first shell body 1 .

[0050] The connecting member 3 in the present application is a threaded connection structure such as a bolt or a screw. Accordingly, a through hole is formed on the first cover plate 2, and a positioning screw hole is formed at the corresponding position of the through hole on the first shell body 1. Through the connection between the connecting member 3 and the positioning screw hole, a stable connection between the first cover plate 2 and the first shell body 1 is achieved.

[0051] Alternatively, if Figure 1 Combination Figure 2 As shown, the first shell assembly in the present application further includes a seal 13, and the seal 13 is located between the first shell body 1 and the second shell assembly.

[0052] The sealing member 13 in the present application is a sealing ring, which is actually sleeved on the second shell body 6 , so as to achieve a sealed connection between the first shell body 1 and the second shell body 6 .

[0053] Alternatively, if Figure 2 As shown, the driving assembly in the present application includes a stator 8, a rotor 9 and an output shaft 10. The stator 8 and the rotor 9 are both located in the second cavity, and one end of the output shaft 10 is connected to the rotor 9, and the other end is connected to the impeller assembly.

[0054] During actual operation, the stator 8 is fixedly connected to the second shell body 6, the rotor 9 can rotate relative to the stator 8, and the output shaft 10 is connected to the rotor 9 and the impeller assembly, so that when the rotor 9 rotates, it can drive the output shaft 10 to rotate, thereby realizing the rotation of the impeller assembly.

[0055] Alternatively, if Figure 2 As shown, the second shell assembly in the present application includes a second shell body 6 and a second cover plate 7. The second cover plate 7 is connected to a first position of the second shell body 6 to form a second cavity. The first shell body 1 is connected to a second position of the second shell body 6 to connect the first cavity with the second cavity.

[0056] Preferably, a threaded portion is formed on the outer wall of the second shell body 6 in the present application, and correspondingly, threads are formed on the second cover plate 7 and the first shell body 1, and the diameter of the second shell body 6 is smaller than the diameters of the second cover plate 7 and the first shell body 1. Therefore, during assembly, the first shell body 1 and the second cover plate 7 are both sleeved on the outside of the second shell body 6, thereby realizing the connection between the three through threaded cooperation.

[0057] It can be understood that the first position of the second shell body 6 in the present application refers to the end of the second shell body 6 facing the second cover plate 7, and the second position is the end facing the first shell body 1. After assembly, the end of the first shell body 1 can abut against the end of the second cover plate 7, so that the overall structure fits more tightly.

[0058] Alternatively, if Figure 2 As shown, the driving assembly in the present application also includes a control component 11 and a sealing layer 12; the second cover plate 7 forms a bearing space, the control component 11 is arranged in the bearing space, the control component 11 includes a main body and a first connecting part 1101, the sealing layer 12 is arranged to cover the main body, and the sealing layer 12 is sealed and connected to the second cover plate 7; the stator 8 is connected to the second connecting part 801, and the first connecting part 1101 is plugged into the second connecting part 801.

[0059] The control member 11 in the present application is a control board, which can be a PCB and connected to the main controller of the vehicle to control the start and stop of the drive assembly. Accordingly, in the present application, a first connection part 1101 is formed on the control member 11, and a second connection part 801 is connected to the stator 8, and the first connection part 1101 is a pin, and the second connection part 801 is a socket, so that the connection between the control member 11 and the stator 8 is achieved through plugging, and the start and stop control of the entire drive assembly is achieved.

[0060] Furthermore, the present application disposes the control component 11 in the second cover plate 7 and seals the main body of the control component 11 by injection molding. On the one hand, it is possible to improve the service life of the control component 11. On the other hand, since the sealing layer 12 covers the main body and is sealed with the second cover plate 7, when the second cover plate 7 is connected to the second shell body 6, the sealing layer 12 can be used in conjunction with the second shell body 6 to form a second cavity, thereby realizing the storage and flow of oil.

[0061] Furthermore, since the sealing layer 12 is in direct contact with the oil, it can also dissipate heat from the control component 11 during use, thereby ensuring the temperature stability of the overall structure.

[0062] In addition, the present invention also provides a vehicle, comprising the double-acting vane pump described above.

[0063] The double-acting vane pump provided in the present application can be adapted to different power consumption requirements within a limited space, and the manufacturing cost and assembly difficulty of the oil pump used are greatly reduced.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-acting vane pump, characterized in that: It includes an oil pump mechanism and a driving mechanism; The oil pump mechanism comprises a first housing assembly and an impeller assembly, wherein the first housing assembly forms a first cavity, and the impeller assembly is disposed in the first cavity; the drive mechanism comprises a drive assembly and a second housing assembly, wherein the second housing assembly forms a second cavity, and the drive assembly is disposed in the second cavity, and an output shaft of the drive assembly passes through the second housing assembly and is connected to the impeller assembly; A first oil inlet, a liquid passage, a second oil inlet and a liquid outlet are sequentially formed in the first cavity and along the rotation direction of the impeller assembly. The liquid passage and the liquid outlet are communicated with the second cavity.

2. The double-acting vane pump according to claim 1, characterized in that: The first housing assembly includes a first housing body and a first cover plate, the first housing body forms a receiving groove, and the first cover plate covers the first housing body and the receiving groove to form the first cavity; A first liquid inlet, a second liquid inlet and a liquid outlet are formed in sequence on the first cover plate along the rotation direction of the impeller assembly, and a first liquid inlet groove, a liquid outlet, a second liquid inlet groove and a counter-position outlet are formed in sequence on the first shell body along the rotation direction of the impeller assembly, the first liquid inlet groove corresponds to the first liquid inlet to form the first oil inlet part, the second liquid inlet groove corresponds to the second liquid inlet to form the second oil inlet part, and the counter-position outlet corresponds to the liquid outlet to form the liquid outlet part.

3. The double-acting vane pump according to claim 2, characterized in that: The impeller assembly includes an impeller body and a matching piece, wherein the matching piece is ring-mounted, the impeller body is located in the inner ring space of the matching piece, and the impeller body and the matching piece form a first gap and a second gap, the first gap correspondingly connects the first oil inlet part and the liquid passing part, and the second gap correspondingly connects the second oil inlet part and the liquid outlet part.

4. The double-acting vane pump according to claim 3, characterized in that: The contour of the receiving groove is matched with the outer contour of the matching piece, and the matching piece is embedded in the receiving groove.

5. The double-acting vane pump according to claim 2, characterized in that: The first shell assembly also includes a connecting piece, and the connecting piece passes through the first cover plate and is connected to the first shell body.

6. The double-acting vane pump according to claim 2, characterized in that: The first housing assembly further includes a seal located between the first housing body and the second housing assembly.

7. The double-acting vane pump according to claim 2, characterized in that: The driving assembly includes a stator, a rotor and an output shaft. The stator and the rotor are both located in the second cavity, and one end of the output shaft is connected to the rotor, and the other end is connected to the impeller assembly.

8. The double-acting vane pump according to claim 7, characterized in that: The second shell assembly includes a second shell body and a second cover plate, the second cover plate is connected to a first position of the second shell body to form the second cavity, and the first shell body is connected to a second position of the second shell body to communicate with the first cavity.

9. The double-acting vane pump according to claim 8, characterized in that: The drive assembly also includes a control member and a sealing layer; The second cover plate is formed with a bearing space, the control member is arranged in the bearing space, the control member includes a main body and a first connecting part, the sealing layer covers the main body, and the sealing layer is sealed and connected to the second cover plate; The stator is connected with a second connection portion, and the first connection portion is plugged into the second connection portion.

10. A vehicle, characterized in that: A double-acting vane pump comprising any one of claims 1 to 9.

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