Electronic oil pump with sealing structure and vehicle

Abstract

The utility model discloses an electronic oil pump with a sealing structure and a vehicle. The electronic oil pump comprises a built-in driving plate, a connector, a first sealing piece and a second sealing piece. The built-in driving plate is arranged in an area defined by a shell of the electronic oil pump and a rear end cover of the electronic oil pump. The connector is electrically connected with the built-in driving board through a wire. The built-in driving plate is connected with a rear end cover of the electronic oil pump through the first sealing piece, the first sealing piece, the built-in driving plate and the rear end cover of the electronic oil pump jointly form a sealing structure which is provided with an internal space and is separated from the outside, and the wire is inserted into the internal space of the sealing structure in a penetrating mode; the shell of the electronic oil pump and the rear end cover of the electronic oil pump are in sealed connection through the second sealing piece. The arrangement position of the connector is designed to be higher than the highest liquid level surface of soaking liquid, and the number of sealing risk points is reduced to three, so that when the electronic oil pump is in a wading or soaking environment, sealing failure and water inlet short circuit are effectively prevented, and normal operation of a vehicle is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of electronic oil pump technology, and in particular relates to an electronic oil pump and vehicle with a sealed structure. Background Technology

[0002] In the field of new energy commercial vehicles, electronic cooling oil pumps used for cooling the main drive motor typically employ a plug-in connection method, as exemplified by existing technology CN117905694A. While this structure facilitates installation, the connectors are mostly made of plastic, and when the vehicle's connector is connected to it, vibrations are transmitted to the connection point between the connector and the vehicle's connector due to the base being fixed in place by screws. This 90-degree angle between the connector and base, coupled with the plastic material itself, makes it highly susceptible to breakage.

[0003] Because the chassis of new energy vehicles are often positioned low, the electronic oil pump is at risk of being submerged in water. The connection structure of the existing technology CN117905694A makes it susceptible to sealing failure and water ingress short circuit when placed in a water-filled or submerged environment, which may lead to the failure of the main drive motor, the cooling device of the electronic oil pump, and the inability of the vehicle to operate normally. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides an electronic oil pump and vehicle with a sealed structure.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] In a first aspect, an electronic oil pump with a sealed structure is provided, the electronic oil pump comprising:

[0007] The built-in drive board is located in the area enclosed by the housing of the electronic oil pump and the rear end cover of the electronic oil pump;

[0008] The connector is electrically connected to the built-in driver board via wires;

[0009] The first seal connects the built-in drive board to the rear end cover of the electronic oil pump. The first seal, the built-in drive board, and the rear end cover of the electronic oil pump together form a sealed structure with an internal space separated from the outside. Wires are inserted into the internal space of the sealed structure.

[0010] The second seal connects the housing of the electronic oil pump to the rear cover of the electronic oil pump in a sealed manner.

[0011] In some embodiments, the first seal includes:

[0012] A groove is provided on the contact surface between the first seal and the built-in drive plate;

[0013] A first boss is located in the middle section of the first seal, and the outer periphery of the first boss is larger than the outer periphery of the front section of the first seal. An end face pressure plate is provided on one side end face of the first boss, and the end face pressure plate is fixedly connected to the rear end cover of the electronic oil pump; and

[0014] The second boss is located at the tail end of the first seal. Its outer periphery is smaller than that of the first boss. One end face of the second boss is sealed and fitted with the end face of the first boss, and the other end face is sealed and fitted with the built-in drive plate.

[0015] In some embodiments, the first seal further includes a plurality of annular grooves, the middle section of the first seal is disposed in the inner hole of the rear end cover, and the plurality of annular grooves are disposed at the sealing point where the middle section of the first seal fits against the inner wall of the inner hole of the rear end cover.

[0016] In some embodiments, the electronic oil pump further includes:

[0017] A protrusion is provided on the housing at the connection point with the rear end cover;

[0018] Grooves are provided at the connection between the rear end cover and the housing; and

[0019] The second seal is disposed between the protrusion of the housing and the groove of the rear end cover. The second seal, the protrusion of the housing, and the groove of the rear end cover together form a sealing structure.

[0020] In some embodiments, the second seal includes:

[0021] The outer ring has several raised dots, which fit snugly against the outer side of the groove on the rear end cover; and

[0022] The inner ring fits and seals against the inside of the groove on the rear cover.

[0023] Secondly, a vehicle is provided that includes all of the aforementioned electronic oil pumps.

[0024] The beneficial effects of this utility model are as follows: By designing the arrangement position of the connector to be higher than the highest liquid level of the immersion liquid, the sealing risk points are reduced to three. The sealing structure set at the above three sealing risk points can effectively reduce the risk of breakage at the connection. Furthermore, it can effectively prevent the accidental occurrence of sealing failure and water ingress short circuit when the electronic oil pump is in a water-immersed or water-soaked environment, so as to ensure the normal operation of the vehicle. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is an overall structural diagram of an electronic oil pump with a sealing structure provided in one embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram showing the deformation direction of the first sealing element provided in one embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the structure of the first sealing member provided in one embodiment of the present invention from a first perspective;

[0029] Figure 4 This is a schematic diagram of the structure of the first sealing member provided in one embodiment of the present invention from a second perspective;

[0030] Figure 5 This is a structural schematic diagram of the first sealing element provided in one embodiment of the present invention from a third-view perspective;

[0031] Figure 6 This is a schematic diagram of the structure of the rear end cover provided in one embodiment of the present invention from a first perspective;

[0032] Figure 7 This is a schematic diagram of the structure of the rear end cover provided in one embodiment of the present invention from a second perspective;

[0033] Figure 8 This is a schematic diagram of the end face pressure plate provided in one embodiment of the present invention from a first perspective.

[0034] Figure 9 This is a schematic diagram of the end face pressure plate provided in one embodiment of the present invention from a second perspective.

[0035] Figure 10 This is a schematic diagram of the structure of the second sealing element provided in one embodiment of the present invention;

[0036] Figure 11 yes Figure 10 A partially enlarged structural diagram of point C of the provided second seal;

[0037] Figure 12 This is a vehicle installation location diagram of an electronic oil pump with a sealed structure provided in one embodiment of the present invention. Detailed Implementation

[0038] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 As shown, an electronic oil pump 10 with a sealed structure is provided, including a housing 101, a rear end cover 102, a wire 103, a built-in drive board 104, a connector 105, a first seal 106, an end face pressure plate 107, and a second seal 108.

[0040] The built-in drive board 104 is located in the area enclosed by the housing 101 of the electronic oil pump 10 and the rear end cover 102 of the electronic oil pump 10.

[0041] The connector 105 is electrically connected to the built-in driver board 104 via wire 103.

[0042] Understandably, the built-in drive board 104 is located within the area enclosed by the housing 101 and the rear end cover 102. A wire 103 passes through the inner hole 1021 of the rear end cover 102, connecting the built-in drive board 104 to the connector 105 in a separate manner. The connector 105 is positioned above the highest liquid level 20 of the immersion liquid. The wire 103 is also connected to the vehicle power supply 30. The built-in drive board 104 is connected to the vehicle power supply 30 via the wire 103 and connector 105. When the vehicle power supply 30 transmits electrical energy to the built-in drive board 104 via the aforementioned path, the built-in drive board 104 controls and drives the motor inside the electronic oil pump 10 to rotate. Finally, the rotation of the motor drives the pump head of the electronic oil pump 10 to operate, generating oil suction and discharge functions. If water enters the area enclosed by the housing 101 and the rear cover 102, it will cause a short circuit in the built-in drive board 104, which will in turn cause the electronic oil pump 10 to malfunction.

[0043] like Figure 12As shown, the length of the wire 103 can be increased or decreased according to actual needs, and the extent of the increase or decrease depends on the overall vehicle layout. By adjusting the length of the wire 103, the connector 105 can be connected and positioned at a high position. The feasibility of this method lies in the fact that the basic distance between the vehicle-side power supply 30 and the built-in drive board 104 is fixed, and the two are mainly connected by the wire 103. The connector 105 mainly serves as an end-to-end joint, so this joint point can be set at any position on the wire 103 formed by the vehicle-side power supply 30 and the power-requiring built-in drive board 104. By setting the connector 105 at a position higher than the highest liquid level 20 of the immersion liquid (the height varies depending on the specific vehicle model), the sealing risk points are reduced to three points: the seal between the wire 103 and the first seal 106, the seal between the first seal 106 and the rear end cover 102, and the seal between the housing 101 and the rear end cover 102.

[0044] The first seal 106 connects the built-in drive plate 104 to the rear end cover 102 of the electronic oil pump 10. The first seal 106, the built-in drive plate 104 and the rear end cover 102 of the electronic oil pump 10 together form a sealed structure with an internal space that is separated from the outside. The wire 103 is inserted in the internal space of the sealed structure.

[0045] like Figure 3-5 As shown, in one embodiment, the first sealing member 106 includes a groove 1066, a first boss 1064, and a second boss 1065. The groove 1066 is disposed on the contact surface between the first sealing member 106 and the built-in drive plate 104; the first boss 1064 is disposed in the middle section 1062 of the first sealing member 106, and the outer peripheral contour of the first boss 1064 is larger than the outer peripheral contour of the front section of the first sealing member 106. An end face pressure plate 107 is provided on one side end face of the first boss 1064, and the end face pressure plate 107 is fixedly connected to the rear end cover 102 of the electronic oil pump 10; the second boss 1065 is disposed in the tail section of the first sealing member 106, and the outer peripheral contour is smaller than the outer peripheral contour of the first boss 1064. One side end face of the second boss 1065 is sealed and fitted with the end face of the first boss 1064, and the other side end face is sealed and fitted with the built-in drive plate 104.

[0046] It is understood that the middle section 1062 of the first seal 106 is located inside the inner hole 1021 of the rear cover 102. The first seal 106 encloses the wire 103 inside it. The wire 103 passes through the inner hole 1021 of the rear cover 102 and connects to the right-side built-in drive board 104. The connection method is the industry-standard through-hole welding, which will not be described in detail here. To ensure that the wire 103 and the built-in drive board 104 can function normally without water ingress, the first seal 106 is provided between the inner hole 1021 of the rear cover 102 and the wire 103. This is to prevent conductive liquid on the left side of the first seal 106, which is in communication with the environment, from entering the right side of the first seal 106 and causing a short circuit in the built-in drive board 104.

[0047] In one embodiment, a plurality of screws 40 are screwed and fastened through the through holes 1071 on the end face pressure plate 107 and the screw holes 1024 on the rear end cover 102.

[0048] like Figure 3-5 As shown, in one embodiment, in order to ensure the sealing between the wire 103 and the first seal 106, the wire 103 is specifically an assembly of several dispersed single wires. The first seal 106 is provided with through holes 1061, which are the same number as the dispersed single wires. The inner diameter of the through holes 1061 is smaller than the outer diameter of the dispersed single wires. Each dispersed single wire passes through each through hole 1061 and forms an interference fit with the first seal 106.

[0049] It is understandable that there are many types of dispersed single wires, which can be completely dispersed individual wire segments or dispersed individual wire segments forming a multi-core cable. Here, completely dispersed individual wire segments are preferred. The inner diameter of the through hole 1061 is smaller than the outer diameter of the conductor 103, so that the two form an interference fit. Since the first seal 106 is made of rubber, the insulation layer in contact between the conductor 103 and the first seal 106 is also made of rubber. The relative interference fit between the two remains unchanged only when they are in contact and under high and low temperature conditions.

[0050] Understandably, in order to ensure the sealing between the first seal 106 and the rear cover 102, a groove 1066 is provided on the right side of the contact surface between the first seal 106 and the built-in drive plate 104. The groove 1066 is specifically located inside the first protrusion 1064 of the first seal 106, in order to reduce the area of ​​the first protrusion 1064 abutting against the built-in drive plate 104.

[0051] like Figure 6-7As shown, in order to ensure the sealing between the first sealing member 106 and the rear end cover 102, in one embodiment, the rear end cover 102 is provided with a recessed platform 1023, the first sealing member 106 is provided with a first boss 1064 protruding to both sides along the middle section 1062 of the first sealing member 106 and a second boss 1065 located on the first boss 1064. The left end face of the first boss 1064 is higher than the end face pressure plate 107 and its bottom edge is higher than the end face of the recessed platform 1023; the right side of the second boss 1065 is in contact with the end face of the built-in drive plate 104.

[0052] During the tightening process of screw 40, the end face pressure plate 107 first abuts against the bottom edge of the first boss 1064 of the first seal 106. After further tightening, the portion of the bottom edge of the first boss 1064 that protrudes above the end face of the countersunk 1023 on the rear end cover 102 is gradually squeezed until the end face pressure plate 107 abuts against the countersunk 1023 on the rear end cover 102. The bottom edge of the first boss 1064 of the first seal 106 is also almost squeezed to be flush with the end face of the countersunk 1023 on the rear end cover 102. This is due to the deformation characteristics of the rubber material of the first seal 106. Because the right side of the second boss 1065 in the first seal 106 abuts against the built-in drive plate 104, the deformation of the left side of the first seal 106 will be towards the [see reference]. Figure 2 Deformation in the AB direction.

[0053] like Figure 4 As shown, in order to enhance the sealing effect, in one embodiment, the middle section 1062 of the first sealing member 106 and the inner hole 1021 of the rear end cover 102 are provided with a plurality of annular grooves 1063.

[0054] It is understandable that even if a gap is created between the inner hole 1021 of the rear cover 102 and the first seal 106 due to deformation caused by processing and manufacturing, the annular groove 1063 can still act as a water-blocking groove.

[0055] The second seal 108 seals the housing 101 of the electronic oil pump 10 to the rear end cover 102 of the electronic oil pump 10.

[0056] like Figure 6-9 As shown, in one embodiment, the electronic oil pump 10 further includes a protrusion 1011 and a groove 1022. The protrusion 1011 is disposed on the housing 10 at the connection point with the rear end cover 102; the groove 1022 is disposed on the rear end cover 102 at the connection point with the housing 101. A second seal 108 is disposed between the protrusion 1011 of the housing 101 and the groove 1022 of the rear end cover 102, and the second seal 108, the protrusion 1011 of the housing 101, and the groove 1022 of the rear end cover 102 together form a sealing structure.

[0057] like Figure 10-11As shown, in one embodiment, the second seal 108 includes an outer ring 1082 and an inner ring 1081. The inner ring 1081 is spread open by the inner side of the groove 1022 and is press-fitted to it. The outer ring 1082 is provided with a plurality of protrusions 1083, which are tightly fitted to the outer side of the groove 1022.

[0058] It is understandable that if there is a gap between the second seal 108 and the inner side of the groove 1022, the second seal 108 will deform, making it easy for liquid to infiltrate and form a passage with the inner side of the groove 1022. This would cause the liquid to enter the area enclosed by the rear cover 102 and the housing 101 along the inner side of the groove 1022, ultimately causing a short circuit in the built-in drive board 104. The above arrangement ensures that the inner ring 1081 of the second seal 108 fits snugly with the inner side of the groove 1022 of the rear cover 102, while the outer ring 1082 of the second seal 108 has a gap with the outer side of the groove 1022 of the rear cover 102. The outer ring 1082 of the second seal 108 has multiple protrusions 1083 that fit snugly with the outer side of the groove 1022 of the rear cover 102. The deformation force generated by this fit counteracts the deformation of the inner ring 1081 and the inability to fit snugly with the inner side of the groove 1022. The right side of the second seal 108 abuts against the protrusion 1011 of the housing 101, and the gap between the groove 1022 and the protrusion 1011 is smaller than the width of the second seal 108, forcing the left side of the second seal 108 to fully fit with the left side of the groove 1022. After the rear end cover 102 and the connecting surface 50 of the housing 101 are preferentially fitted, the second seal 108 is fully fitted and sealed in the area between the groove 1022 and the protrusion 1011.

[0059] In one embodiment, the shape and number of the protrusions 1083 can be set according to specific requirements.

[0060] In one embodiment, both the rear end cover 102 and the end face pressure plate 107 are made of metal; both the first seal 106 and the second seal 108 are made of rubber. In one embodiment, the rear end cover 102 is preferably made of aluminum alloy; in one embodiment, the end face pressure plate 107 is preferably made of stainless steel; in one embodiment, the end face pressure plate 107 is made of other easily oxidized metals with anti-oxidation treatment on the surface.

[0061] It is understandable that metal and rubber materials expand and contract differently at high and low temperatures. The above design can ensure that this invention achieves a better sealing effect at different temperatures.

[0062] The sealing states of this utility model at different temperatures are as follows:

[0063] At room temperature, the first seal 106 and the wire 103 form an interference fit. The bottom edge of the first boss 1064 in the first seal 106 is squeezed and assembled by the end face pressure plate 107 to form an end face fit compression seal. The middle section 1062 of the first seal 106 forms an interference fit with the inner hole 1021 of the rear end cover 102, and the middle section 1062 of the first seal 106 is provided with multiple annular grooves 1063 to enhance the seal. This forms an absolute seal of the first seal 106 against the intrusion of external liquid.

[0064] At high temperatures, the first seal 106 expands in both the radial and axial directions, further enhancing the sealing effect. Specifically, after the first seal 106 comes into contact with the inner hole 1021 of the rear cover 102 in the radial direction, it can no longer expand, and the expanded portion will move towards... Figure 1 The expansion transfer is shown in directions A, B, and the through hole 1061 containing the wire 103, as shown in Figure 1-2. For the expansion transfer in direction A, the sealing effect between the bottom edge of the first boss 1064 in the first seal 106 and the end face pressure plate 107 is enhanced. For the expansion transfer in direction B, the axial contact area between the first seal 106 and the inner hole 1021 of the rear end cover 102 is enhanced. For the expansion transfer in the through hole 1061, the sealing effect is further strengthened, and the excess expansion volume will extend along both sides of the wire 103 axially. It should be noted that the rear end cover 102 will also experience thermal expansion at high temperatures, but because it is made of metal, its total thermal expansion is less than that of the rubber-made first seal 106. In the axial direction, the expansion of the first seal 106 will also increase the end face pressure on the built-in drive plate 104. Since the first seal 106 is provided with a groove 1066, the contact area is reduced. The end face pressure on the built-in drive plate 104 caused by the thermal expansion of the first seal 106 is partially controlled within an acceptable range and will not cause damage to the built-in drive plate 104.

[0065] At low temperatures, the fluidity of the liquid is lower than at high temperatures, resulting in a decrease in sealing pressure. The first seal 106 experiences volume shrinkage in both the radial and axial directions. Specifically, in the radial direction, the shrinkage of the first seal 106 is greater than that of the inner hole 1021 of the rear end cover 102. To prevent gaps that could lead to external liquid leakage, the relative interference fit between the first seal 106 and the inner hole 1021 of the rear end cover 102 is designed to sufficiently compensate for the gap caused by the shrinkage. This is a mature application and will not be elaborated further. Since both the first seal 106 and the wire 103 with the interference fit are made of rubber, their shrinkage ratios are similar, and the volume shrinkage will not reduce the sealing effect. In the axial direction, the interference fit at the point where the first seal 106 abuts against the end face pressure plate 107 is set to sufficiently offset the separation caused by the shrinkage of the first seal 106 and the end face pressure plate 107 due to low temperatures. For the first seal 106 on the right end abutting against the built-in drive plate 104, disengagement at low temperatures will not cause failure; due to the small shrinkage of the inner hole 1021 of the metal rear end cover 102, the interference fit between the first seal 106 and the inner hole 1021 of the rear end cover 102 is weakened. However, during assembly, the A-direction and B-direction deformations caused by the end face pressure plate 107 pressing against the first seal 106 are restored at this time, compensating for the deformation caused by the first seal 106 and the end face pressure plate 107, and the first seal 106... The reduced sealing effect caused by the weakened interference fit between the first seal 106 and the inner hole 1021 of the rear cover 102; furthermore, in direction A, the deformation of the first seal 106 caused by the pressure of the end face plate 107 on the first seal 106 at room temperature is compensated for by the overall shrinkage of the first seal 106 at low temperature. As the pressure of the end face plate 107 on the first seal 106 decreases, there is a tendency to restore the original shape along the deformation path in direction A, thereby compensating for the weakened interference fit between the first seal 106 and the inner hole 1021 of the rear cover 102. The same applies to direction B, which compensates for the weakened interference fit between the first seal 106 and the inner hole 1021 of the rear cover 102; in addition, the first seal 106 is provided with several annular grooves 1063, which can compensate for the local gap problem caused by the deformation of the first seal 106 itself and its fit with the inner hole 1021 of the rear cover 102.

[0066] At room temperature, the inner ring 1081 of the second seal 108 is fitted against the inner side of the groove 1022 of the rear cover 102 and is propped open by the inner side of the groove 1022 of the rear cover 102, meaning the inner circumference of the groove 1022 of the rear cover 102 is greater than the circumference of the inner ring 1081 of the second seal 108. When external liquid intrudes and applies force to the second seal 108, it will not cause deformation of the second seal 108 because the inner ring 1081 of the second seal 108 and the inner side of the groove 1022 of the rear cover 102 remain in a fitted state. The force of this intruding liquid further enhances this fitting force, resulting in a better sealing effect.

[0067] At high temperatures, since the second seal 108 is made of rubber, the expansion sealing effect is better. However, the expansion of the inner ring 1081 of the second seal 108 towards the outer ring 1082 is due to the compression of the second seal 108 by the protrusion 1011 of the housing 101. The expansion of this part of the inner ring 1081 towards the outer ring 1082 fills the gaps between the groove 1022 of the rear cover 102 and the protrusion 1011 of the housing 101, without affecting the sealing effect.

[0068] At low temperatures, the outer ring 1082 of the second seal 108 shrinks toward the inner ring 1081, resulting in a better sealing effect when the inner ring 1081 of the second seal 108 fits against the inner side of the groove 1022. Furthermore, after shrinking at low temperatures, the second seal 108 is designed so that its axial distance is still smaller than the gap between the groove 1022 of the rear cover 102 and the protrusion 1011 of the housing 101, thus maintaining its sealing effect.

[0069] This utility model reduces the sealing risk points to three by arranging the connector 105 above the highest liquid level 20 of the immersion liquid. The sealing structure set at the above three sealing risk points can effectively reduce the risk of breakage at the connection and can effectively prevent the accidental occurrence of sealing failure and water ingress short circuit when the electronic oil pump 10 is in a water-immersed environment, so as to ensure the normal operation of the vehicle.

[0070] The above description is merely a preferred embodiment of one or more embodiments of this specification and is not intended to limit the scope of one or more embodiments of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the protection scope of one or more embodiments of this specification.

Claims

1. An electronic oil pump with a sealed structure, characterized in that, include: An internal drive board is located in the area enclosed by the housing of the electronic oil pump and the rear end cover of the electronic oil pump; The connector is electrically connected to the built-in driver board via wires; The first seal connects the built-in drive board to the rear end cover of the electronic oil pump. The first seal, the built-in drive board, and the rear end cover of the electronic oil pump together form a sealed structure with an internal space that is separated from the outside. The wire is inserted into the internal space of the sealed structure. as well as The second seal connects the housing of the electronic oil pump to the rear end cover of the electronic oil pump in a sealed connection.

2. The electronic oil pump according to claim 1, characterized in that, The first seal includes: A groove is provided on the contact surface between the first seal and the built-in drive plate; A first boss is disposed in the middle section of the first seal, and the outer periphery of the first boss is larger than the outer periphery of the front section of the first seal; an end face pressure plate is provided on one side end face of the first boss, and the end face pressure plate is fixedly connected to the rear end cover of the electronic oil pump; and The second boss is located at the tail end of the first seal. Its outer periphery is smaller than that of the first boss. One end face of the second boss is sealed and fitted with the end face of the first boss, and the other end face is sealed and fitted with the built-in drive plate.

3. The electronic oil pump according to claim 1, characterized in that, The first sealing element further includes several annular grooves. The middle section of the first sealing element is disposed in the inner hole of the rear end cover, and the several annular grooves are disposed at the sealing point where the middle section of the first sealing element fits against the inner wall of the inner hole of the rear end cover.

4. The electronic oil pump according to claim 1, characterized in that, Also includes: A protrusion is provided on the housing at the connection point with the rear end cover; A groove is provided on the rear end cover at the connection point with the housing; as well as The second seal is disposed between the protrusion of the housing and the groove of the rear end cover, and the second seal, the protrusion of the housing and the groove of the rear end cover together form a sealing structure.

5. The electronic oil pump according to claim 4, characterized in that, The second seal includes: The outer ring has several protrusions, which fit against the outer side of the groove of the rear end cover; and The inner ring is fitted and sealed to the inside of the groove of the rear end cover.

6. A vehicle, characterized in that, The electronic oil pump includes any one of claims 1-5.

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