Electric pump set device

Abstract

The utility model relates to an electric pump set device. The electric pump set device comprises a first electric pump set and a second electric pump set. And a control unit. The control unit is located in a first control unit shell and a second control unit shell which are arranged in a split mode so as to avoid the joint between the first electric pump set and the second electric pump set. The control unit is used for controlling the first electric pump set and the second electric pump set. Wherein a first sealing part is arranged between the first electric pump set and the first control unit shell, a second sealing part is arranged between the second electric pump set and the second control unit shell, and a planar third sealing part is arranged between the first electric pump set and the second electric pump set; any two of the first sealing part, the second sealing part and the third sealing part do not intersect with each other.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sealing, in particular to an electric pump set device. BACKGROUND

[0002] In the traditional electric pump set device, two motor shafts are arranged in axial opposite sealing, a control unit is arranged on the circumferential side of the motor for controlling the two motors, and the control unit shell and the motor are arranged in sealing. The integral control unit shell spans the two motors in the axial direction, at this time, the control unit shell passes through the junction between the two motors, so that the sealing between the two motors and the sealing between the control unit shell and the two motors have mutually perpendicular intersection parts, forming a T-shaped sealing.

[0003] This T-shaped sealing is difficult to seal with a sealing ring and can only be sealed with sealing glue. Even if sealed with sealing glue, the intersection of the T-shaped sealing forms a special non-planar structure, which can easily reduce the sealing effect and complicate the installation and sealing process. SUMMARY

[0004] To solve the above technical problems, the utility model provides an electric pump set device.

[0005] The embodiment of the utility model provides an electric pump set device. The electric pump set device comprises: a first electric pump set, a second electric pump set and a control unit. The control unit is located in the first control unit shell and the second control unit shell arranged in a split manner to avoid the junction between the first electric pump set and the second electric pump set; the control unit is used for controlling the first electric pump set and the second electric pump set. Wherein, the first sealing part is arranged between the first electric pump set and the first control unit shell, the second sealing part is arranged between the second electric pump set and the second control unit shell, and the third sealing part is arranged between the first electric pump set and the second electric pump set; any two of the first sealing part, the second sealing part and the third sealing part do not intersect.

[0006] According to some embodiments of the utility model, the first electric pump set comprises a first pump and a first motor for driving the first pump; the second electric pump set comprises a second pump and a second motor for driving the second pump. Wherein, the first sealing part is arranged between the first motor and the first control unit shell, the second sealing part is arranged between the second motor and the second control unit shell, and the third sealing part is arranged between the first motor and the second motor.

[0007] According to some embodiments of the present application, the first control unit housing is arranged on the circumferential side of the first motor, the second control unit housing is arranged on the circumferential side of the second motor, the first motor and the second motor are arranged in the axial direction, and the first control unit housing and the second control unit housing are arranged correspondingly in the circumferential direction. The first sealing part and the second sealing part are perpendicular to the third sealing part.

[0008] According to some embodiments of the present application, the circumferential side of the first motor is provided with a first motor circumferential side joint part, the first control unit housing is provided with a first housing circumferential side joint part towards the circumferential side of the first motor, and the first motor circumferential side joint part and the first housing circumferential side joint part are mutually jointed and sealed by the planar first sealing part. Similarly, the circumferential side of the second motor is provided with a second motor circumferential side joint part, the second control unit housing is provided with a second housing circumferential side joint part towards the circumferential side of the second motor, and the second motor circumferential side joint part and the second housing circumferential side joint part are mutually jointed and sealed by the planar second sealing part. The first sealing part and the second sealing part are perpendicular to the third sealing part.

[0009] According to some embodiments of the present application, the first motor is provided with a first motor axial side joint part towards the axial side of the second motor, the second motor is provided with a second motor axial side joint part towards the axial side of the first motor, and the first motor axial side joint part and the second motor axial side joint part are mutually jointed and sealed by the planar third sealing part.

[0010] According to some embodiments of the present application, the first motor axial side joint part extends radially outward to form a first joint convex part corresponding to the circumferential side of the first control unit housing, and the second motor axial side joint part extends radially outward to form a second joint convex part corresponding to the circumferential side of the second control unit housing.

[0011] According to some embodiments of the present application, the circumferential side of the first motor is provided with a first motor circumferential side joint part, the first control unit housing is provided with a first housing circumferential side joint part towards the circumferential side of the first motor and a first housing axial joint part towards the axial side of the first joint convex part, and the first sealing part includes a first circumferential sealing part and a first axial sealing part. The first motor circumferential side joint part and the first housing circumferential side joint part are mutually jointed and sealed by the first circumferential sealing part, and the first joint convex part and the first housing axial joint part are mutually jointed and sealed by the first axial sealing part.

[0012] Similarly, the second motor is provided with a second motor peripheral side joint portion; the second control unit housing is provided with a second housing peripheral side joint portion towards the peripheral side of the second motor and a second housing axial joint portion towards the axial side of the second joint convex portion; the second sealing portion comprises a second peripheral side sealing portion and a second axial sealing portion; wherein the second motor peripheral side joint portion and the second housing peripheral side joint portion are mutually jointed and jointed and sealed by the second peripheral side sealing portion; the second joint convex portion and the second housing axial joint portion are mutually jointed and jointed and sealed by the second axial sealing portion.

[0013] According to some embodiments of the utility model, the control unit comprises a first control unit part and a second control unit part, which are respectively arranged in the first control unit housing and the second control unit housing; the first housing axial joint portion, the first joint convex portion, the second joint convex portion and the second housing axial joint portion are provided with an axial through opening; the first control unit part and the second control unit part are electrically connected through a line or a plug passing through the axial through opening, and jointly control the first electric pump group and the second electric pump group.

[0014] According to some embodiments of the utility model, the first motor peripheral side joint portion and the first housing peripheral side joint portion, the second motor peripheral side joint portion and the second housing peripheral side joint portion and the first motor axial side joint portion and the second motor axial side joint portion are mutually jointed by bolts.

[0015] According to some embodiments of the utility model, the first sealing portion, the second sealing portion and the third sealing portion are sealing glue or sealing rings.

[0016] Through the electric pump group device of the utility model, the control unit housing is divided into two parts: the first control unit housing and the second control unit housing, so that the sealing between the control unit housing and the motor is also divided into two independent sealing structures, that is, the first sealing portion and the second sealing portion, to avoid the third sealing portion between the first motor and the second motor, thereby avoiding the mutual crossing of the sealing between the components of the electric pump group device, and avoiding the poor sealing effect caused by the special structure at the crossing point. The sealing portion of the utility model is a plane sealing or a relatively simple L-shaped structure, and there is no special structure of mutual crossing, which is beneficial to improve the sealing effect of the electric pump group device. In addition, this structure makes the sealing of the electric pump group device can adopt sealing glue sealing, and can also adopt sealing ring sealing, which is more flexible in form; and the plane sealing of each sealing portion makes the electric pump group device more convenient to assemble and seal, and reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0018] Figure 1 A side view of the electric pump set device according to an embodiment of the present application is shown;

[0019] Figure 2 An exploded view of the electric pump set device according to an embodiment of the present application is shown;

[0020] Figure 3 A side view of the electric pump set device according to another embodiment of the present application is shown; and

[0021] Figure 4 An exploded view of the electric pump set device according to another embodiment of the present application is shown. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be clearly and completely described below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0023] According to an embodiment of the present application, an electric pump set device is provided, which can be applied in a hydraulic damping system, for example, in a hydraulic damping system of a vehicle chassis, but is not limited thereto. The hydraulic damping system needs an electric pump set device capable of providing hydraulic power.

[0024] Figure 1 A structural schematic view of the electric pump set device according to an embodiment of the present application is shown;

[0025] Figure 2 An exploded view of the electric pump set device according to an embodiment of the present application is shown. As shown in Figure 1 and Figure 2 The electric pump set device comprises a first electric pump set 1, a second electric pump set 2 and a control unit. The control unit is located in a first control unit housing 3 and a second control unit housing 4 which are separately arranged, so as to avoid the joint between the first electric pump set 1 and the second electric pump set 2; the control unit is used for controlling the first electric pump set 1 and the second electric pump set 2.

[0026] A first sealing portion A is arranged between the first electric pump group 1 and the first control unit housing 3 to seal the first electric pump group 1 and the first control unit housing 3; a second sealing portion B is arranged between the second electric pump group 2 and the second control unit housing 4 to seal the second electric pump group 2 and the second control unit housing 4; and a third sealing portion C in the shape of a plane is arranged between the first electric pump group 1 and the second electric pump group 2 to seal the first electric pump group 1 and the second electric pump group 2; and any two of the first sealing portion A, the second sealing portion B, and the third sealing portion C do not intersect.

[0027] According to the above embodiment, the control unit housing is divided into two parts: the first control unit housing 3 and the second control unit housing 4, and the control unit housing avoids the joint between the first electric pump group 1 and the second electric pump group 2, so that the sealing between the control unit housing and the electric pump group is divided into two independent sealing structures, i.e., the first sealing portion A and the second sealing portion B; and the first sealing portion A and the second sealing portion B can be arranged to avoid the joint between the first electric pump group 1 and the second electric pump group 2, i.e., to avoid the third sealing portion C.

[0028] Through the above arrangement, the first sealing portion A, the second sealing portion B, and the third sealing portion C form three independent sealing structures that do not intersect, thereby avoiding the sealing of the electric pump group device forming a T-shaped cross seal, and the sealing structure without intersection is beneficial to improve the sealing effect of the electric pump group device.

[0029] Specifically, as shown in Figure 1 and Figure 2 , the first electric pump group includes a first pump 11 and a first motor 12 for driving the first pump 11; and the second electric pump group includes a second pump 21 and a second motor 22 for driving the second pump 21. The first pump 11 and the second pump 21 can be hydraulic pumps, and the control unit can control the first motor 12 and the second motor 22 to provide hydraulic energy for the first pump 11 and the second pump 21.

[0030] Further, as shown in Figure 1 and Figure 2 , the first motor 12 and the second motor 22 are arranged adjacent to each other, and the first pump 11 and the second pump 21 are respectively directed in different directions, facilitating the first pump 11 and the second pump 21 to output hydraulic energy outward. The control unit is arranged adjacent to the first motor 12 and the second motor 22, facilitating the control unit to control the first motor 12 and the second motor 22, and further control the first pump 11 and the second pump 21 to output hydraulic energy.

[0031] In this way, the first motor 12 and the first control unit housing 3 are provided with the first sealing portion A, the second motor 22 and the second control unit housing 4 are provided with the second sealing portion B, and the first motor 12 and the second motor 22 are provided with the third sealing portion C.

[0032] More specifically, referring further to Figure 1 and Figure 2 , the first control unit housing 3 is arranged at the periphery of the first motor 12, the second control unit housing 4 is arranged at the periphery of the second motor 22, the first motor 12 and the second motor 22 are arranged in the axial direction, and the first pump 11 and the second pump 21 are arranged at positions away from each other in the axial direction, so as to output hydraulic energy to the two sides of the axial direction. In this way, the first sealing portion A and the second sealing portion B are both perpendicular to the third sealing portion C, and the three sealing portions do not intersect with each other, forming three independent sealing portions.

[0033] It should be understood that the "axial direction" mentioned above refers to the extension direction of the motor shaft, i.e. the output direction of the first motor 12 and the second motor 22, for example, in Figure 1 , the horizontal direction is the "axial direction"; accordingly, the "radial direction" mentioned below is the direction perpendicular to the "axial direction", for example, the vertical direction in Figure 1 .

[0034] Further, the first control unit housing 3 and the second control unit housing 4 are arranged adjacent in the circumferential direction, i.e. the first control unit housing 3 and the second control unit housing 4 are arranged on the same side of the two motors in the circumferential direction, so that the first control unit housing 3 and the second control unit housing 4 can be closer, and the control unit can be arranged in the first control unit housing 3 and the second control unit housing 4. The arrangement of the control unit in the first control unit housing 3 and the second control unit housing 4 will be described below.

[0035] The control unit can include a first control unit part and a second control unit part arranged in the first control unit housing 3 and the second control unit housing 4 respectively; the first control unit part and the second control unit part are electrically connected through a wire or a plug-in connector, and jointly control the first motor 12 and the second motor 22. In this way, the control unit can be arranged in the first control unit housing 3 and the second control unit housing 4, and the first control unit part and the second control unit part form a whole control unit through electrical connection, which can control the first motor 12 and the second motor 22 at the same time, so that under the condition of the control unit housing being arranged in two parts, one control unit can still control two motors.

[0036] In some optional embodiments, referring to Figure 1 and Figure 2As shown, the first motor 12 is provided with a first motor peripheral side joint 121, and the first control unit housing 3 is provided with a first housing peripheral side joint 31 facing the first motor 12, the first motor peripheral side joint 121 and the first housing peripheral side joint 31 are jointed with each other and sealed by the first sealing part A. By providing the first motor peripheral side joint 121 and the first housing peripheral side joint 31, the connection and fixation between the first motor 12 and the first control unit housing 3 can be facilitated. Figure 2 As shown, the first motor peripheral side joint 121 and the first housing peripheral side joint 31 can be provided with a plurality of screw holes, and the first motor 12 and the first control unit housing 3 can be jointed with each other by bolts to be connected and fixed.

[0037] Similarly, the second motor 22 is provided with a second motor peripheral side joint 221, and the second control unit housing 4 is provided with a second housing peripheral side joint 41 facing the second motor 22, the second motor peripheral side joint 221 and the second housing peripheral side joint 41 are jointed with each other and sealed by the second sealing part B. By providing the second motor peripheral side joint 221 and the second housing peripheral side joint 41, the connection and fixation between the second motor 22 and the second control unit housing 4 can be facilitated. Figure 2 As shown, the second motor peripheral side joint 221 and the second housing peripheral side joint 41 can be provided with a plurality of screw holes, and the second motor 22 and the second control unit housing 4 can be jointed with each other by bolts to be connected and fixed.

[0038] As shown, Figure 1 As shown, the first sealing part A, the second sealing part B and the third sealing part C are all planar sealing, and the first sealing part A and the second sealing part B are perpendicular to the third sealing part C.

[0039] Through the above arrangement, the first sealing part A, the second sealing part B and the third sealing part C form three independent sealing structures of non-intersecting planes, which not only can avoid the intersection problem of the sealing between the components of the electric pump set device, but also each sealing part is planar sealing, so that the electric pump set device is more convenient to assemble and seal, reduces the cost, and at the same time can improve the sealing effect of the electric pump set device.

[0040] In addition, the first sealing part A, the second sealing part B and the third sealing part C are three independent planar sealing structures, and there is no special sealing structure area intersecting between them, so the first sealing part A, the second sealing part B and the third sealing part C can be sealed by sealant or sealing ring, and the form is more flexible.

[0041] In some optional embodiments, the first motor 12 is provided with a first motor shaft side joint 122 towards the axial side of the second motor 22, the second motor 22 is provided with a second motor shaft side joint 222 towards the axial side of the first motor 12, the first motor shaft side joint 122 and the second motor shaft side joint 222 are mutually jointed and jointed and sealed by the planar third sealing part C.

[0042] It can be understood that by providing the first motor shaft side joint 122 and the second motor shaft side joint 222, the connection and fixation between the first electric pump group 1 and the second electric pump group 2 can be facilitated. Figure 2 As shown, the first motor shaft side joint 122 and the second motor shaft side joint 222 can be correspondingly provided with a plurality of screw holes, the first motor shaft side joint 122 and the second motor shaft side joint 222 are mutually jointed by bolts, and then the first electric pump group 1 and the second electric pump group 2 are connected and fixed.

[0043] In addition, by providing the first motor shaft side joint 122 and the second motor shaft side joint 222, it is also beneficial to provide the third sealing part C between the first motor 12 and the second motor 22, for example, to facilitate the provision of sealing glue between the first motor shaft side joint 122 and the second motor shaft side joint 222, or to correspondingly provide a sealing groove on the first motor shaft side joint 122 and the second motor shaft side joint 222 for providing a sealing ring.

[0044] In some optional embodiments, as shown in Figure 1 and Figure 2 The first motor shaft side joint 122 extends radially outward to form a first joint protrusion 123 corresponding to the circumferential side of the first control unit housing 3, and the second motor shaft side joint 222 extends radially outward to form a second joint protrusion 223 corresponding to the circumferential side of the second control unit housing 4. The screw holes on the first motor shaft side joint 122 and the second motor shaft side joint 222 can be respectively provided on the first joint protrusion 123 and the second joint protrusion 223, facilitating the assembly of the bolts to the first motor shaft side joint 122 and the second motor shaft side joint 222.

[0045] In addition, the provision of the first joint protrusion 123 and the second joint protrusion 223 can also facilitate the electrical connection between the first control unit part and the second control unit part through a wire or a plug-in connector, which will be described below. Figure 3 shows a side view of an electric pump group device according to another embodiment of the present application; and Figure 4 shows an exploded view of an electric pump group device according to another embodiment of the present application. In combination Figure 3 and Figure 4As shown, in some optional embodiments, the first motor 12 is provided with a first motor peripheral engagement portion 121 on its periphery; the first control unit housing 3 is provided with a first housing peripheral engagement portion 31 on its periphery facing the first motor 12, and also with a first housing axial engagement portion 32 on its axial side facing the first engagement protrusion 123; the first sealing portion A includes a first peripheral sealing portion A1 and a first axial sealing portion A2; wherein, the first motor peripheral engagement portion 121 and the first housing peripheral engagement portion 31 are engaged with each other and sealed by the first peripheral sealing portion A1; the first engagement protrusion 123 and the first housing axial engagement portion 32 are engaged with each other and sealed by the planar first axial sealing portion A2.

[0046] With the above settings, as Figure 3 As shown, compared to Figure 1 and Figure 2 In the embodiment shown, the first circumferential sealing part A1 is perpendicular to the first axial sealing part A2. The side view of the first sealing part A is generally L-shaped, and the first sealing part A in this embodiment does not intersect with other sealing parts, so good sealing performance can still be guaranteed.

[0047] Similarly, the second motor 22 is provided with a second motor peripheral engagement portion 221 on its periphery; the second control unit housing 4 is provided with a second housing peripheral engagement portion 41 on its periphery facing the second motor 22, and a second housing axial engagement portion 42 on its axial side facing the second engagement protrusion 223; the second sealing portion B includes a second peripheral sealing portion B1 and a second axial sealing portion B2; wherein the second motor peripheral engagement portion 221 and the second housing peripheral engagement portion 41 are engaged with each other and sealed by the second peripheral sealing portion B1; the second engagement protrusion 223 and the second housing axial engagement portion 42 are engaged with each other and sealed by the planar second axial sealing portion B2.

[0048] With the above settings, as Figure 3 As shown, compared to Figure 1 and Figure 2 In the embodiment shown, the second circumferential sealing part B1 is perpendicular to the second axial sealing part B2. The side view of the second sealing part B is generally L-shaped, and the second sealing part B in this embodiment does not intersect with other sealing parts, so good sealing performance can still be guaranteed.

[0049] Furthermore, such as Figure 4As shown, the first housing axial joint 32, the first joint protrusion 123, the second joint protrusion 223 and the second housing axial joint 42 are provided with axial through openings; the first control unit part and the second control unit part are electrically connected through a wire or a plug passing through the axial through openings, and jointly control the first electric pump set 1 and the second electric pump set 2.

[0050] In Figure 1 and Figure 2 Embodiments, because the first control unit housing 3 and the second control unit housing 4 are not communicated in the axial direction, the wire or plug between the first control unit part and the second control unit part needs to enter the housing of the first motor 12 and the second motor 22, bypassing the interval area between the first control unit housing 3 and the second control unit housing 4. While in the embodiments as shown in Figure 3 and Figure 4 The first control unit housing 3 and the second control unit housing 4 are provided with axial through openings, so the wire or plug between the first control unit part and the second control unit part can directly pass through the opening area, without the need to bypass the interval area, so the assembly of the product is more convenient, and the arrangement of the control unit is simplified.

[0051] It should be noted that the utility model is aimed at improving the structural layout of the electric pump set device, so the technical scheme of the utility model can be applied to various application scenarios requiring pump sets. The number and arrangement of the electric pump set and the motor and pump included therein can not be limited to the above description.

[0052] Although the possible embodiments are described in the above description by way of example, it should be understood that there are still a large number of variations of the embodiments through the combination of all known and otherwise easily conceivable technical features and embodiments. Furthermore, it should be understood that the exemplary embodiments are merely examples, and such embodiments are by no means limiting the scope of protection, application and construction of the utility model in any form. The foregoing description is more to provide technical guidance for the skilled person to transform at least one exemplary embodiment, wherein various changes can be made as long as they do not deviate from the scope of protection of the claims, especially changes regarding the functions and structures of the components.

[0053] Reference sign number

[0054] 1. First electric pump unit; 11. First pump; 12. First motor; 121. First motor circumferential joint; 122. First motor axial joint; 123. First joint protrusion; 2. Second electric pump unit; 21. Second pump; 22. Second motor; 221. Second motor circumferential joint; 222. Second motor axial joint; 223. Second joint protrusion; 3. First control unit housing; 31. First housing circumferential joint; 32. First housing axial joint; 4. Second control unit housing; 41. Second housing circumferential joint; 42. Second housing axial joint; A. First seal; A1. First circumferential seal; A2. First axial seal; B. Second seal; B1. Second circumferential seal; B2. Second axial seal; C. Third seal.

Claims

1. An electric pump pack arrangement, characterized by Comprising: a first electric pump group (1); a second electric pump group (2); and a control unit located in a first control unit housing (3) and a second control unit housing (4) arranged separately to avoid the joint between the first electric pump group (1) and the second electric pump group (2); the control unit is used to control the first electric pump group (1) and the second electric pump group (2); wherein the first electric pump group (1) and the first control unit housing (3) are provided with a first sealing part (A), the second electric pump group (2) and the second control unit housing (4) are provided with a second sealing part (B), and the first electric pump group (1) and the second electric pump group (2) are provided with a planar third sealing part (C); any two of the first sealing part (A), the second sealing part (B) and the third sealing part (C) do not intersect.

2. The electric pump group device according to claim 1, wherein the first electric pump group (1) comprises a first pump (11) and a first motor (12) for driving the first pump (11); the second electric pump group (2) comprises a second pump (21) and a second motor (22) for driving the second pump (21); wherein the first motor (12) and the first control unit housing (3) are provided with the first sealing part (A), the second motor (22) and the second control unit housing (4) are provided with the second sealing part (B), and the first motor (12) and the second motor (22) are provided with the third sealing part (C). The first control unit housing (3) is arranged on the periphery of the first motor (12), the second control unit housing (4) is arranged on the periphery of the second motor (22), and the first control unit housing (3) and the second control unit housing (4) are correspondingly arranged in the circumferential direction; the first motor (12) and the second motor (22) are arranged in the axial direction.

3. The electric pump pack arrangement of claim 2, wherein, The periphery of the first motor (12) is provided with a first motor periphery engaging part (121), the first control unit housing (3) is provided with a first housing periphery engaging part (31) towards the periphery of the first motor (12), the first motor periphery engaging part (121) and the first housing periphery engaging part (31) are engaged with each other and sealed by the planar first sealing part (A); 4. The electric pump pack arrangement of claim 3, wherein, The periphery of the second motor (22) is provided with a second motor periphery engaging part (221), the second control unit housing (4) is provided with a second housing periphery engaging part (41) towards the periphery of the second motor (22), the second motor periphery engaging part (221) and the second housing periphery engaging part (41) are engaged with each other and sealed by the planar second sealing part (B); wherein the first sealing part (A) and the second sealing part (B) are perpendicular to the third sealing part (C). ​ 5. The electric pump pack arrangement of claim 3, wherein, The first motor (12) is provided with a first motor shaft side joint (122) towards the axial side of the second motor (22), the second motor (22) is provided with a second motor shaft side joint (222) towards the axial side of the first motor (12), the first motor shaft side joint (122) and the second motor shaft side joint (222) are mutually jointed and joint sealed by the planar third sealing part (C).

6. The electric pump pack arrangement of claim 5, wherein, The first motor shaft side joint (122) extends radially outward to form a first joint protrusion (123) corresponding to the circumferential side of the first control unit housing (3), and the second motor shaft side joint (222) extends radially outward to form a second joint protrusion (223) corresponding to the circumferential side of the second control unit housing (4).

7. The electric pump pack arrangement of claim 6, wherein, The circumferential side of the first motor (12) is provided with a first motor circumferential side joint (121); the first control unit housing (3) is provided with a first housing circumferential side joint (31) towards the circumferential side of the first motor (12), and a first housing axial joint (32) towards the axial side of the first joint protrusion (123); the first sealing part (A) comprises a first circumferential side sealing part (A1) and a first axial sealing part (A2); wherein the first motor circumferential side joint (121) and the first housing circumferential side joint (31) are mutually jointed and joint sealed by the first circumferential side sealing part (A1); the first joint protrusion (123) and the first housing axial joint (32) are mutually jointed and joint sealed by the first axial sealing part (A2); The circumferential side of the second motor (22) is provided with a second motor circumferential side joint (221); the second control unit housing (4) is provided with a second housing circumferential side joint (41) towards the circumferential side of the second motor (22), and a second housing axial joint (42) towards the axial side of the second joint protrusion (223); the second sealing part (B) comprises a second circumferential side sealing part (B1) and a second axial sealing part (B2); wherein the second motor circumferential side joint (221) and the second housing circumferential side joint (41) are mutually jointed and joint sealed by the second circumferential side sealing part (B1); the second joint protrusion (223) and the second housing axial joint (42) are mutually jointed and joint sealed by the second axial sealing part (B2).

8. The electric pump pack arrangement of claim 7, wherein, The control unit comprises a first control unit part and a second control unit part, which are respectively arranged in the first control unit shell (3) and the second control unit shell (4); the first shell axial joint (32), the first joint convex part (123), the second joint convex part (223) and the second shell axial joint (42) are provided with axial through openings; the first control unit part and the second control unit part are electrically connected through lines or connectors via the axial through openings, and jointly control the first electric pump group (1) and the second electric pump group (2).

9. The electric pump pack arrangement of claim 7, wherein, The first motor circumferential joint (121) and the first shell circumferential joint (31), the second motor circumferential joint (221) and the second shell circumferential joint (41), and the first motor shaft joint (122) and the second motor shaft joint (222) are mutually jointed through bolts.

10. The electric pump pack arrangement of claim 1, wherein, The first sealing part (A), the second sealing part (B) and the third sealing part (C) are sealing glue or sealing rings.

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