Electronic oil pump and vehicle

Abstract

The present application provides an electronic oil pump and a vehicle, wherein the electronic oil pump comprises: a pump housing, which is formed with an inlet and a cavity; an electric control board, which is arranged in the cavity; a pump shaft, which is rotatably arranged in the pump housing, one end of the pump shaft is connected to the inlet, and the other end extends toward the electric control board and is connected to the cavity; a drive assembly, which is sleeved outside the pump shaft and is electrically connected to the electric control board; the drive assembly is used to drive the fluid to flow from the inlet through the pump shaft into the cavity, so that the fluid contacts the electric control board and exchanges heat with the electric control board. Using the fluid as the heat exchange medium of the electric control board and directly contacting the electric control board can absorb the heat generated by the electric control board more quickly and achieve a more efficient heat dissipation effect.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an electronic oil pump and a vehicle. Background Art

[0002] The electronic oil pump plays an important role in the vehicle's power system. The electronic control board of the electronic oil pump is the control core of the entire electronic oil pump system. The electronic control board will generate a lot of heat during the operation of the electronic oil pump.

[0003] In the related art, the electronic control board is usually cooled by a fan, and the fan takes away the heat on the surface of the electronic control board through forced convection. The heat needs to be transferred through the air. Since the internal space of the electronic oil pump is relatively closed and the air flow is restricted, the heat dissipation effect of the electronic control board through the fan is poor. Therefore, how to improve the heat dissipation effect of the electronic control board of the electronic oil pump is a technical problem that needs to be urgently solved in this field. Summary of the invention

[0004] In view of the above problems, the present application provides an electronic oil pump and a vehicle to improve the heat dissipation effect of the electronic control board of the electronic oil pump.

[0005] In order to solve the above-mentioned technical problems, the technical solution adopted in the present application is conceived as follows: On the first aspect, the present application provides an electronic oil pump, which includes: a pump housing, formed with an inlet and a cavity; an electronic control board, arranged in the cavity; a pump shaft, rotatably arranged in the pump housing, one end of the pump shaft is connected to the inlet, and the other end extends toward the electronic control board and is connected to the cavity; a drive assembly, which is sleeved on the outside of the pump shaft and electrically connected to the electronic control board; the drive assembly is used to drive the fluid to flow from the inlet through the pump shaft into the cavity, so that the fluid contacts the electronic control board and exchanges heat with the electronic control board.

[0006] In some embodiments, the electronic oil pump also includes a temperature measuring component, which is electrically connected to the electronic control board. The temperature measuring component is used to detect the temperature of the electronic control board. The electronic control board is used to control the rotation speed of the driving component in response to the detected temperature of the temperature measuring component, thereby controlling the flow rate of the fluid flowing into the cavity.

[0007] In some embodiments, the electronic oil pump also includes a partition, which is arranged between the pump shaft and the electronic control board, and the electronic control board is respectively spaced apart from the pump shaft and the partition, and a first flow channel is formed between the partition and the electronic control board; wherein the partition is provided with a first opening connected to the first flow channel, and the other end of the pump shaft is inserted into the first opening, and the fluid flowing out of the pump shaft flows into the first flow channel through the first opening to contact the first side of the electronic control board toward the partition.

[0008] In some embodiments, the electric control board is spaced apart from the bottom wall of the cavity to form a second flow channel between the electric control board and the bottom wall. The electric control board is provided with a second opening connecting the first flow channel and the second flow channel. The second opening and the second flow channel are used to pass the fluid so that the fluid contacts the second side of the electric control board away from the partition.

[0009] In some embodiments, the first opening is coaxially disposed with the second opening.

[0010] In some embodiments, a third flow channel is formed between the end of the electric control board facing the pump housing and the pump housing, the third flow channel connects the first flow channel and the second flow channel, and the third flow channel is at least used to guide the fluid in the second flow channel to the first flow channel.

[0011] In some embodiments, the cavity includes a first cavity and a second cavity, the drive component and the pump shaft are disposed in the first cavity, the electric control board is disposed in the second cavity, the partition is disposed on the side of the first cavity close to the second cavity, and the partition is also provided with a third opening connecting the first flow channel and the first cavity; the pump housing is also formed with an outlet connected to the first cavity, and the fluid in the first flow channel flows into the first cavity through the third opening under the drive of the drive component, so that the fluid exchanges heat with at least part of the drive component and is pumped out from the outlet.

[0012] In some embodiments, the partition includes: a first guide column, which is formed with a first opening; a first filter element, which is arranged in the first opening and is used to filter the fluid flowing out of the pump shaft; wherein the first guide column includes a drainage surface, the drainage surface is located on the inner surface of one end of the first guide column close to the electric control board, and the drainage surface is inclined from the end close to the drive assembly toward the direction away from the axis of the first guide column, and extends toward the direction of the electric control board.

[0013] In some embodiments, a protective layer is provided on the surface of the electric control board and the surfaces of components disposed on the electric control board.

[0014] In a second aspect, the present application provides a vehicle, the vehicle comprising the above-mentioned electronic oil pump.

[0015] The beneficial effects of the implementation methods of the present application are as follows: the present application provides an electronic oil pump and a vehicle, the electronic oil pump comprising a pump housing, an electronic control board, a pump shaft and a drive assembly, the pump housing being formed with an inlet and a cavity; the electronic control board being disposed in the cavity; the pump shaft being rotatably disposed in the pump housing, one end of the pump shaft being connected to the inlet, and the other end extending toward the electronic control board and connected to the cavity; the drive assembly being sleeved outside the pump shaft and electrically connected to the electronic control board; the drive assembly being used to drive the fluid to flow from the inlet through the pump shaft into the cavity, so that the fluid contacts the electronic control board and exchanges heat with the electronic control board. By connecting one end of the pump shaft to the inlet and the other end extending toward the electric control board and connecting to the cavity, the fluid flowing into the cavity from the inlet through the pump shaft under the drive of the drive component can contact the electric control board and exchange heat with the electric control board. On the one hand, using the fluid as the heat exchange medium of the electric control board and directly contacting the electric control board can absorb the heat generated by the electric control board more quickly and achieve a more efficient heat dissipation effect; on the other hand, the fluid flows into the cavity directly through the inlet and the pump shaft without passing through the drive component, which can reduce the influence of the drive component on the temperature of the fluid, so that the fluid can maintain the initial temperature and make the temperature of the fluid more uniform and stable, and the heat absorption capacity of the fluid will not be affected by the air flow conditions, and can stably absorb the heat of the electric control board to reduce the temperature of the electric control board, which can further improve the heat dissipation effect of the electric control board; thirdly, compared with the existing motor heat dissipation, the operating environment through heat exchange between the fluid and the electric control board is quieter and the noise is smaller, which can improve the silent effect of the electronic oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of an electronic oil pump provided by the present application;

[0018] Figure 2 is a cross-sectional view of an embodiment of an electronic oil pump provided by the present application;

[0019] Figure 3 yes Figure 2 A magnified view of part A in FIG.

[0020] Figure 4 It is a schematic diagram of the flow trajectory of the fluid when the electronic oil pump provided by the present application is working.

[0021] The reference numerals in the specific implementation manner are as follows:

[0022] Electronic oil pump 100, pump shaft 100a, pump housing 10, cavity 101, first cavity 1011, second cavity 1012, bottom wall 1013, first end cover 11, inlet 111, outlet 112, buffer cavity 113, first inlet 114, second inlet 115, first housing 12, first motor chamber 121, first sub-cavity 1211, second sub-cavity 1212, bottom plate 122, fourth opening 1221, second guide column 1222, second housing 13, second motor chamber 131, second flange 132, second end cover 14, first flow channel 141, second flow channel 142, third flow channel 143, first flange portion 144, connecting portion 145, electric control board 20, first side 21, second side 22, second opening 23, drive assembly 30, first drive assembly 31, first rotor 311, second rotor 312, hydraulic chamber 313, second drive assembly 32, third rotor 321, stator 322, partition 40, first guide column 41, first opening 42, drainage surface 43, third opening 44, first filter element 51, second filter element 52, sealing element 60. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0027] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0028] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate heat exchange medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] See also Figures 1 to 3 , Figure 1 It is a structural schematic diagram of an embodiment of an electronic oil pump provided by the present application; Figure 2 is a cross-sectional view of an embodiment of an electronic oil pump provided by the present application; Figure 3 yes Figure 2A magnified view of part A in the figure. In one aspect of the present application, an electronic oil pump 100 is provided. The electronic oil pump 100 can be used in a vehicle. The vehicle can be a new energy vehicle, and the new energy vehicle can be a car, a van, a bus, etc., but not limited thereto. The vehicle can also be an internal combustion engine vehicle, a fuel vehicle or a hybrid vehicle with other transmissions, but not limited thereto. The electronic oil pump 100 includes a pump housing 10, an electronic control board 20, a pump shaft 100a and a drive assembly 30. Among them, the pump housing 10 is the basic carrier of the electronic oil pump 100, which plays a role in bearing and protecting components such as the electronic control board 20, the pump shaft 100a and the drive assembly 30, so as to prevent these components from being physically damaged or affected by environmental factors. At the same time, the pump housing 10 forms a relatively closed space so that the drive assembly 30 can effectively inhale and pump out the fluid. The fluid pumped out from the electronic oil pump 100 can flow into the fuel supply pipe of the vehicle to provide necessary fuel support for the engine of the vehicle. The fluid can be hydraulic oil, etc. For example, HL type hydraulic oil, HM type hydraulic oil, HG type hydraulic oil, HV low temperature hydraulic oil, HS high temperature hydraulic oil or HR synthetic hydraulic oil, but not limited thereto.

[0031] Please also read Figure 4 , Figure 4 It is a schematic diagram of the flow trajectory of the fluid when the electronic oil pump provided by the present application is working. The pump housing 10 is formed with an inlet 111 and a cavity 101. The electric control board 20 is disposed in the cavity 101. The pump shaft 100a is rotatably disposed in the pump housing 10. One end of the pump shaft 100a is connected to the inlet 111. The other end of the pump shaft 100a extends toward the electric control board 20 and is connected to the cavity 101. The drive assembly 30 is sleeved on the outside of the pump shaft 100a and is electrically connected to the electric control board 20. The drive assembly 30 is used to drive the fluid to flow from the inlet 111 through the pump shaft 100a into the cavity 101, so that the fluid contacts the electric control board 20 and exchanges heat with the electric control board 20.

[0032] The temperature of the fluid flowing into the electronic oil pump 100 from the inlet 111 is relatively low, and can be used to absorb the heat of the electronic control board 20 in the electronic oil pump 100 , so as to reduce the temperature of the electronic control board 20 .

[0033] The driving assembly 30 and the pump shaft 100a are located on one side of the electric control board 20 close to the inlet 111. The arrangement direction of the driving assembly 30 and the electric control board 20 is parallel to the extension direction of the pump shaft 100a.

[0034] In some embodiments, one end of the pump shaft 100a away from the inlet 111 can extend to the side of the electric control board 20 facing the drive assembly 30, and be spaced apart from the electric control board 20, so that the fluid flowing out of the pump shaft 100a first contacts the first side 21 of the electric control board 20 facing the drive assembly 30, and exchanges heat with the first side 21 of the electric control board 20.

[0035] In some embodiments, the end of the pump shaft 100a away from the inlet 111 may also be passed through the electric control board 20 and communicated with the space on the side of the electric control board 20 away from the drive assembly 30, so that the fluid flowing out of the pump shaft 100a first contacts the second side 22 of the electric control board 20 away from the drive assembly 30, and exchanges heat with the second side 22 of the electric control board 20, wherein the end of the pump shaft 100a away from the inlet 111 may be located in the opening of the electric control board 20, or the end of the pump shaft 100a away from the inlet 111 may also be flush with the side of the electric control board 20 away from the drive assembly 30, or the end of the pump shaft 100a away from the inlet 111 may also extend to the side of the electric control board 20 away from the drive assembly 30. The embodiment of the present application is described by taking the example that the end of the pump shaft 100a away from the inlet 111 extends to the side of the electric control board 20 facing the drive assembly 30.

[0036] By connecting one end of the pump shaft 100a to the inlet 111 and the other end extending toward the electric control board 20 and connecting to the cavity 101, the fluid flowing into the cavity 101 from the inlet 111 through the pump shaft 100a under the drive of the drive assembly 30 can contact the electric control board 20 and exchange heat with the electric control board 20. On the one hand, the fluid is used as the heat exchange medium of the electric control board 20 and directly contacts the electric control board 20, so that the heat generated by the electric control board 20 can be absorbed more quickly, and a more efficient heat dissipation effect can be achieved; on the other hand, the fluid directly flows into the cavity 101 through the inlet 111 and the pump shaft 100a. 01, there is no need to pass through the drive component 30, which can reduce the impact of the drive component 30 on the temperature of the fluid, so that the fluid can maintain the initial temperature, and the temperature of the fluid is more uniform and stable, and the heat absorption capacity of the fluid will not be affected by the air flow conditions, and can stably absorb the heat of the electric control board 20 to reduce the temperature of the electric control board 20, which can further improve the heat dissipation effect of the electric control board 20; thirdly, compared with the existing motor heat dissipation, the operating environment is quieter and the noise is smaller through heat exchange between the fluid and the electric control board 20, which can improve the silent effect of the electronic oil pump 100.

[0037] In addition, since the fluid has a good heat dissipation effect on the electric control board 20, it can reduce the damage of high temperature to the components on the electric control board 20, slow down the aging speed of the components on the electric control board 20, thereby extending the service life of the components and reducing the maintenance cost of the electronic oil pump 100; and, for the selection of components, low-cost components such as high resistance and low temperature resistance can be selected, for example, low-cost MOS tubes, main control chips, electrolytic capacitors and inductors such as high resistance and low temperature resistance can be selected, but not limited to this, which can reduce the overall production cost of the electronic oil pump 100.

[0038] In some embodiments, a protective layer (not shown) is disposed on the surface of the electric control board 20 and the surfaces of the components disposed on the electric control board 20 .

[0039] The protective layer may be a conformal coating that is oil-resistant and elastic after curing. The conformal coating may be silicone conformal coating, polyurethane conformal coating or acrylate conformal coating, but is not limited thereto. Silicone conformal coating, polyurethane conformal coating and acrylate conformal coating all have good moisture-proof, oil-resistant, salt-foam-resistant and insulating properties, which can not only prevent fluid from corroding the electric control board 20 and components, but also provide electrical isolation for the electric control board 20 and components disposed on the electric control board 20, preventing short circuits caused by fluid contact with the electric control board 20 and components, thereby improving the reliability of the electric control board 20.

[0040] In some embodiments, the electronic oil pump 100 further includes a temperature measuring component (not shown). The temperature measuring component is electrically connected to the electric control board 20, and the temperature measuring component is used to detect the temperature of the electric control board 20. The electric control board 20 is used to control the rotation speed of the driving component 30 in response to the detected temperature of the temperature measuring component, thereby controlling the flow rate of the fluid flowing into the cavity 101.

[0041] When the temperature measuring component detects that the temperature of the electric control board 20 is high, the electric control board 20 controls the rotation speed of the driving component 30 to increase the flow rate of the fluid flowing into the cavity 101 through the pump shaft 100a; when the temperature measuring component detects that the temperature of the electric control board 20 is low, the electric control board 20 controls the rotation speed of the driving component 30 to slow down to reduce the flow rate of the fluid flowing into the cavity 101 through the pump shaft 100a; thereby, the flow rate of the fluid flowing into the cavity 101 is controlled according to the temperature of the electric control board 20, so as to accurately control the temperature of the electric control board 20, so that the electric control board 20 can operate within the optimal temperature range, which can not only avoid the performance degradation or damage of the components on the electric control board 20 due to excessive temperature, but also provide just the right fluid supply, which can save energy.

[0042] In some embodiments, please refer to Figures 2 to 3 The electronic oil pump 100 further includes a partition 40. The partition 40 is disposed between the pump shaft 100a and the electric control board 20, and the electric control board 20 is spaced from the pump shaft 100a and the partition 40, and a first flow channel 141 is formed between the partition 40 and the electric control board 20.

[0043] The arrangement direction of the partition 40 and the electric control board 20 is parallel to the extension direction of the pump shaft 100a. The partition 40 is located on the side of the electric control board 20 facing the drive assembly 30, and the partition 40 and the electric control board 20 are spaced apart to form a first flow channel 141 between the partition 40 and the electric control board 20. The first flow channel 141 is used for the fluid flowing out of the pump shaft 100a to pass through, so that the fluid contacts the first side 21 of the electric control board 20 facing the partition 40.

[0044] In some embodiments, the partition 40 is provided with a first opening 42 connected to the first flow channel 141, and the other end of the pump shaft 100a is inserted into the first opening 42. The fluid flowing out of the pump shaft 100a flows into the first flow channel 141 through the first opening 42 to contact the first side 21 of the electronic control board 20 facing the partition 40.

[0045] By inserting the other end of the pump shaft 100a away from the inlet 111 into the first opening 42, the fluid flowing out of the pump shaft 100a can directly flow into the first flow channel 141 and exchange heat with the first side 21 of the electric control board 20 facing the partition 40. On the one hand, the flow path of the fluid from the other end of the pump shaft 100a to the first flow channel 141 can be shortened, thereby shortening the time for the fluid to flow out from the pump shaft 100a to contact the first side 21 of the electric control board 20, which can effectively improve the heat dissipation efficiency of the electric control board 20; on the other hand, it can reduce the influence of the temperature of the drive component 30 and the temperature of the space on the side of the partition 40 facing the drive component 30 on the temperature of the fluid, thereby improving the heat exchange effect between the fluid and the electric control board 20, which can effectively improve the heat dissipation effect of the electric control board 20.

[0046] In some embodiments, the electric control board 20 is spaced apart from the bottom wall 1013 of the chamber 101 to form a second flow channel 142 between the electric control board 20 and the bottom wall 1013. The electric control board 20 is provided with a second opening 23 connecting the first flow channel 141 and the second flow channel 142. The second opening 23 and the second flow channel 142 are used to pass the fluid so that the fluid contacts the second side 22 of the electric control board 20 away from the partition 40.

[0047] The second opening 23 may be located in the middle area of ​​the electric control board 20, and the center of the second opening 23 may coincide with the center of the electric control board 20. The second opening 23 may be a circular opening, a square opening, a triangular opening, or a diamond opening, but is not limited thereto.

[0048] By forming the second flow channel 142 between the second side 22 of the electric control board 20 and the bottom wall 1013 of the cavity 101, and opening the second opening 23 on the electric control board 20 to connect the first flow channel 141 and the second flow channel 142, the fluid in the first flow channel 141 and / or the fluid flowing out from the other end of the pump shaft 100a can flow into the second flow channel 142 through the second opening 23, so that the fluid can contact the second side 22 of the electric control board 20 away from the partition 40, and exchange heat with the second side 22 of the electric control board 20. In addition, by forming the first flow channel 141 and the second flow channel 142, the fluid can directly contact the first side 21 and the second side 22 of the electric control board 20, thereby expanding the contact area between the electric control board 20 and the fluid, so that the fluid can absorb the heat of the electric control board 20 more quickly and efficiently, and can effectively improve the heat dissipation efficiency and heat dissipation effect of the electric control board 20.

[0049] In some embodiments, the first opening 42 is coaxially disposed with the second opening 23 .

[0050] By arranging the first opening 42 of the partition 40 and the second opening 23 of the electric control board 20 coaxially, not only can the flow path of the fluid from the other end of the pump shaft 100a to the second flow channel 142 be shortened, thereby shortening the time for the fluid to flow out of the pump shaft 100a and contact the second side 22 of the electric control board 20, thereby further improving the heat dissipation efficiency of the electric control board 20, but also it can prevent the fluid flowing out of the first opening 42 from directly falling on the electric control board 20 and impacting the electric control board 20, thereby causing the electric control board 20 to vibrate, or from falling on the components of the electric control board 20 and impacting the components, thereby causing the components to loosen or short-circuit, thereby improving the stability and reliability of the circuit board.

[0051] In some embodiments, a third flow channel 143 is formed between the end of the electric control board 20 facing the pump housing 10 and the pump housing 10. The third flow channel 143 connects the first flow channel 141 and the second flow channel 142, and is at least used to guide the fluid in the second flow channel 142 to the first flow channel 141.

[0052] By forming a third flow channel 143 between the end of the electric control board 20 facing the pump housing 10 and the pump housing 10, the fluid flowing into the second flow channel 142 can be converged into the first flow channel 141 through the third flow channel 143 to surround the first side 21, the second side 22 and the end of the electric control board 20, so that the electric control board 20 is immersed in the fluid as a whole, so that the heat of the electric control board 20 can be more efficiently transferred to the fluid to achieve uniform heat dissipation, avoid local overheating of the electric control board 20, and effectively improve the heat dissipation effect and reliability of the electric control board 20.

[0053] In some embodiments, please refer to Figures 2 to 3 The cavity 101 includes a first cavity 1011 and a second cavity 1012. The driving assembly 30 and the pump shaft 100a are disposed in the first cavity 1011, the electric control board 20 is disposed in the second cavity 1012, the partition 40 is disposed on a side of the first cavity 1011 close to the second cavity 1012, and the partition 40 is further provided with a third opening 44 connecting the first flow channel 141 and the first cavity 1011.

[0054] The first flow channel 141 between the partition 40 and the electric control board 20 may be located in the first cavity 1011; or, the first flow channel 141 between the partition 40 and the electric control board 20 may also be located in the second cavity 1012; or, a portion of the first flow channel 141 between the partition 40 and the electric control board 20 may be located in the first cavity 1011, and another portion may be located in the second cavity 1012. The embodiment of the present application is described by taking the first flow channel 141 being located in the second cavity 1012 as an example. The second flow channel 142 and the third flow channel 143 are both located in the second cavity 1012.

[0055] By opening the third opening 44 on the partition 40 , the first cavity 1011 and the second cavity 1012 are interconnected, so that the heat on the electric control board 20 can be directly transferred to the first cavity 1011 , or the heat can be transferred to the first cavity 1011 through a fluid.

[0056] The pump housing 10 also forms an outlet 112 connected to the first cavity 1011. The fluid in the first flow channel 141 flows into the first cavity 1011 through the third opening 44 under the drive of the drive component 30, so that the fluid exchanges heat with at least part of the drive component 30 and is pumped out from the outlet 112.

[0057] The drive assembly 30 is disposed in the first cavity 1011. When the fluid in the first flow channel 141 can flow into the first cavity 1011 through the third opening 44, it can pass through at least part of the drive assembly 30 and cool down at least part of the drive assembly 30, which can avoid deformation or damage of the material of the drive assembly 30 due to high temperature, thereby effectively improving the service life of the drive assembly 30. In addition, the fluid can lubricate at least part of the drive assembly 30, reduce the friction between the rotating parts of the drive assembly 30 and between the rotating parts and the fixed parts, and reduce the risk of wear between the rotating parts and between the rotating parts and the fixed parts, thereby effectively reducing the energy consumption of the electronic oil pump 100 and helping to extend the service life of the drive assembly 30.

[0058] By allowing the fluid in the first flow channel 141 to flow into the first cavity 1011 through the third opening 44 and be pumped out from the outlet 112, the heat of the electric control board 20 and the driving components can be removed after the fluid exchanges heat with the electric control board 20 and the driving components. In addition, the electric control board 20 can accurately control the flow rate of the fluid according to its own temperature, thereby ensuring the high efficiency and stability of the heat dissipation process of the electric control board 20, and enabling the components on the electric control board 20 to operate within the optimal temperature range, thereby improving the reliability and service life of the components.

[0059] In some embodiments, please refer to Figure 3The partition plate 40 includes a first guide column 41 and a first filter element 51. The first guide column 41 is formed with a first opening 42. The first filter element 51 is disposed in the first opening 42 and is used to filter the fluid flowing out of the pump shaft 100a. The first filter element 51 can filter out impurities in the fluid to ensure the purity and quality of the fluid, which can not only improve the working efficiency of the electronic oil pump 100, but also reduce the risk of the electronic control board 20 and the driving component 30 in the electronic oil pump 100 being damaged by impurities.

[0060] In some embodiments, a support platform (not shown) is provided on the inner wall of the first opening 42, and the support platform is used to support the first filter element 51. The support platform includes an annular structure formed with a central hole. The plane where the support platform is located is perpendicular to the extension direction of the pump shaft 100a. The first filter element 51 is arranged on the support platform. Specifically, the first filter element 51 can be arranged on the side of the support platform facing the pump shaft 100a; or the first filter element 51 is arranged on the side of the support platform facing away from the pump shaft 100a; or a groove is formed at the end of the inner wall of the support platform facing away from the first opening 42, and the first filter element 51 is embedded in the groove.

[0061] In some embodiments, the other end of the pump shaft 100a is inserted into the first opening 42 and is spaced apart from the inner wall of the first opening 42 and the first filter element 51 to avoid vibration of the partition 40 and the first filter element 51 caused by the pump shaft 100a transmitting the rotational force to the partition 40 and the first filter element 51 during rotation, thereby avoiding damage to the first filter element 51 due to interference between the pump shaft 100a and the first filter element 51, and allowing the fluid in the first flow channel 141 to smoothly pass through the third opening 44 on the partition 40 and flow into the first cavity 1011, thereby reducing the flow resistance of the partition 40 to the fluid, increasing the rate at which the fluid passes through the third opening 44, and effectively improving the heat dissipation efficiency of the electric control board 20. In other embodiments, the other end of the pump shaft 100a is inserted into the first opening 42 and is rotatably connected to the inner wall of the first opening 42, thereby improving the structural strength of the pump shaft 100a and reducing the risk of the pump shaft 100a loosening or falling off during the operation of the electronic oil pump 100.

[0062] In some embodiments, please refer to Figure 3 The first guide column 41 includes a drainage surface 43. The drainage surface 43 is located on the inner surface of one end of the first guide column 41 close to the electric control board 20. The drainage surface 43 is inclined from the end close to the driving assembly 30 toward the direction away from the axis of the first guide column 41, and extends toward the direction of the electric control board 20.

[0063] The drainage surface 43 may be conical, that is, the diameter of the inner wall of the first guide column 41 provided with the drainage surface 43 gradually increases from the end close to the driving assembly 30 to the end close to the electric control board 20 .

[0064] Since the first opening 42 of the first guide column 41 is coaxially arranged with the second opening 23 of the electric control board 20, a guide surface 43 is provided on the inner surface of the end of the first guide column 41 close to the electric control board 20, and the guide surface 43 is inclined from the end close to the driving assembly 30 toward the direction away from the axis of the first guide column 41, and extends toward the direction of the electric control board 20, so that the guide column can guide the fluid into the first flow channel 141 through the guide surface 43 to exchange heat with the first side 21 of the electric control board 20.

[0065] The fluid flowing out of the pump shaft 100a can be divided into two paths, one of which flows along the guide surface 43 to the first flow channel 141, and the other flows through the second opening 23 of the electric control board 20 to the second flow channel 142, so that the fluid can contact the first side 21 and the second side 22 of the electric control board 20 at a similar or same time, so that the fluid can evenly dissipate heat from the electric control board 20, thereby further improving the heat dissipation efficiency and heat dissipation effect of the electric control board 20.

[0066] In some embodiments, please refer to Figure 1 to Figure 2 The pump housing 10 includes a first end cover 11, a first shell 12, a second shell 13 and a second end cover 14 which are sequentially connected. The first end cover 11 is formed with an inlet 111 and an outlet 112, the first shell 12 is connected to one end of the first end cover 11 away from the inlet 111, the second shell 13 is connected to one end of the first shell 12 away from the first end cover 11, and the second end cover 14 is provided at one end of the second shell 13 away from the first shell 12. The first cavity 1011 is formed in the first shell 12 and the second shell 13, the second cavity 1012 is formed in the second end cover 14, and the bottom wall 1013 of the cavity 101 is the surface of the second end cover 14 facing the second cavity 1012. The first end cover 11 and the first shell 12, the first shell 12 and the second shell 13, and the second shell 13 and the second end cover 14 can be fixed together by bolt connection, screw connection or snap connection, but are not limited thereto.

[0067] In some embodiments, the second end cover 14 includes a first flange portion 144 and a connecting portion 145. The first flange portion 144 extends from the edge of the second end cover 14 in a direction away from the second cavity 1012 and is arranged around the circumference of the second end cover 14. The connecting portion 145 is arranged on a side of the first flange portion 144 close to the second cavity 1012, extends in a direction toward the second shell 13, and is inserted into the second shell 13. One end of the second shell 13 away from the first shell 12 abuts against a side of the first flange portion 144 away from the second cavity 1012, and the inner wall of the second shell 13 abuts against the outer wall of the connecting portion 145.

[0068] In some embodiments, the electronic oil pump 100 further includes a seal 60. The seal 60 is disposed on the side of the connecting portion 145 facing away from the second cavity 1012, and is disposed around the circumference of the connecting portion 145. The seal 60 is used to abut against the inner wall of the second shell 13 to improve the sealing performance of the connection between the second end cover 14 and the second shell 13. The seal 60 may be an annular elastic seal 60. The seal 60 may be rubber, silicone, sponge or wool felt, but is not limited thereto. The seal 60 is elastic. On the one hand, the seal 60 acts as a buffer for the second shell 13, and can avoid the risk of damage or cracking of the second shell 13 caused by the friction of the connecting portion 145 with the second shell 13; on the other hand, the setting of the seal 60 can enhance the sealing effect between the second shell 13 and the second end cover 14, and avoid the risk of the fluid flowing into the second shell 13 leaking from the second shell 13 and the second end cover 14 to the outside of the electronic oil pump 100.

[0069] In some embodiments, the second end cap 14 and the second shell 13 may also be connected by threads. For example, the side of the connection portion 145 facing away from the second cavity 1012 is formed with an external thread, and the inner surface of the end of the second shell 13 away from the first shell 12 is formed with an internal thread that matches the external thread of the connection portion 145, and the second end cap 14 and the second shell 13 are screwed together by the internal thread and the external thread to form a whole.

[0070] In some embodiments, the second shell 13 includes a second flange portion 132, which is disposed at one end of the second shell 13 away from the first shell 12. When the connecting portion 145 of the second end cover 14 is inserted into the second shell 13, the second flange portion 132 of the second shell 13 can fit with the first flange portion 144 of the second end cover 14.

[0071] The drive assembly 30 includes a first drive assembly 31 and a second drive assembly 32. The first cavity 1011 includes a first motor chamber 121 and a second motor chamber 131. The first motor chamber 121 is formed in the first shell 12, and the first motor chamber 121 is connected to the inlet 111 and the outlet 112. The second motor chamber 131 is formed in the second shell 13, and the second motor chamber 131 is adjacent to the second cavity 1012. One end of the pump shaft 100a is rotatably disposed at the bottom of the first end cover 11, and the other end extends to the second motor chamber 131 through the first motor chamber 121, and is inserted into the first opening 42 of the partition 40. The first drive assembly 31 is disposed in the first motor chamber 121 and is sleeved outside the pump shaft 100a. Please continue reading Figures 2 to 4The second driving component 32 is arranged in the second motor chamber 131 and is sleeved on the outside of the pump shaft 100a. The pump shaft 100a is used to drive the first driving component 31 to rotate under the drive of the second driving component 32, so that the fluid flows from the inlet 111 through the pump shaft 100a and the first opening 42 into the first flow channel 141, and flows into the second flow channel 142 through the second opening 23 of the electric control board 20, and converges into the first flow channel 141 through the third flow channel 143, so that the electric control board 20 is immersed in the fluid as a whole, and then flows into the second motor chamber 131 through the third opening 44 of the partition 40. The fluid flowing into the second motor chamber 131 can flow into the first motor chamber 121 under the continuous drive of the first driving component 31, and be pumped out from the outlet 112.

[0072] Among them, when the fluid flows into the second motor chamber 131 and the first motor chamber 121, it can further cool the first drive component 31 and the second drive component 32, and the fluid can also lubricate the rotating parts of the first drive component 31 and the second drive component 32, reduce the friction between the rotating parts and between the rotating parts and the fixed parts, and reduce the risk of wear between the rotating parts and between the rotating parts and the fixed parts, thereby reducing the energy consumption of the electronic oil pump 100 and extending the service life of the first drive component 31 and the second drive component 32.

[0073] During the manufacturing process of the electronic oil pump 100, the second drive component 32 can be fixed in the second shell 13 by means of shrink fitting, that is, by heating the second shell 13 to make it expand, and then pressing the second drive component 32 into the second motor chamber 131 of the second shell 13. After the second shell 13 cools and shrinks, the second drive component 32 and the second shell 13 can be tightly matched, thereby completing the assembly of the second drive component 32. The second drive assembly 32 is fixed in the second shell 13 by means of a shrink fit. On the one hand, the assembly efficiency of the second drive assembly 32 can be significantly improved, and the second drive assembly 32 can be effectively positioned to ensure the coaxiality between the second drive assembly 32 and the second shell 13, thereby preventing the second drive assembly 32 from tilting relative to the axis of the second shell 13, thereby facilitating the improvement of the coaxiality between the second drive assembly 32 and the first drive assembly 31. On the other hand, the second shell 13 will generate a certain clamping force on the second drive assembly 32, and this clamping force can ensure that the second drive assembly 32 is fixed in position inside the second shell 13, thereby preventing the second drive assembly 32 from being displaced during transportation or operation of the electronic oil pump 100, thereby ensuring the normal operation of the electronic oil pump 100.

[0074] In some embodiments, the first drive assembly 31 includes a first rotor 311 and a second rotor 312. The first rotor 311 is sleeved outside the pump shaft 100a to be in transmission connection with the pump shaft 100a. The second rotor 312 is sleeved outside the first rotor 311. The first rotor 311 includes a plurality of external teeth, and the second rotor 312 includes a plurality of internal teeth adapted to the external teeth of the first rotor 311. The plurality of external teeth are meshed with the plurality of internal teeth, and there is a certain eccentricity between the first rotor 311 and the second rotor 312 to form a hydraulic chamber 313 between the first rotor 311 and the second rotor 312.

[0075] The first rotor 311 and the second rotor 312 may be plastic rotors. The first rotor 311 and the second rotor 312 may be integrally formed by injection molding, extrusion molding, milling, turning, etc., but are not limited thereto. The material of the first rotor 311 and the second rotor 312 may be selected from thermosetting materials, polyetheretherketone (PEEK) materials, polycarbonate (PC) materials, or polyetherimide (PEI) materials, but are not limited thereto. The first rotor 311 and the second rotor 312 are selected from plastic rotors, which can not only reduce the overall weight of the electronic oil pump 100, but also improve the rotation efficiency of the first rotor 311 and the second rotor 312. At the same time, the plastic rotor has good wear resistance and can extend the service life of the electronic oil pump 100 to a certain extent.

[0076] The second driving assembly 32 includes a third rotor 321 and a stator 322. The third rotor 321 is sleeved outside the pump shaft 100a to be transmission-connected with the pump shaft 100a. The stator 322 is sleeved outside the third rotor 321.

[0077] When the electronic oil pump 100 is working, the electronic control board 20 controls the current in the coil of the stator 322 to change according to a predetermined rule, thereby controlling the stator 322 to generate a changing excitation magnetic field. The third rotor 321 rotates under the action of the excitation magnetic field. When the third rotor 321 rotates, it can drive the pump shaft 100a to rotate, and drive the first rotor 311 to rotate through the pump shaft 100a. Since there is a certain eccentricity between the first rotor 311 and the second rotor 312, when the first rotor 311 rotates, part of the outer teeth of the first rotor 311 mesh with part of the inner teeth of the second rotor 312, thereby driving the second rotor 312 to rotate. During the rotation of the first rotor 311 and the second rotor 312, the pressure in the hydraulic chamber 313 between the first rotor 311 and the second rotor 312 changes, which can drive the fluid to flow into the inlet 111, and at the same time flow into the pump shaft 100a under the action of the second driving component 32, and flow into the first flow channel 141 through the pump shaft 100a and the first opening 42, and then flow into the second flow channel 142 through the second opening 23 of the electric control board 20, and then converge into the first flow channel 141 through the third flow channel 143, so that the electric control board 20 is immersed in the fluid as a whole, so as to evenly dissipate the heat of the electric control board 20.

[0078] In some embodiments, the first motor chamber 121 includes a first sub-chamber 1211 connected to the inlet 111 and a second sub-chamber 1212 connected to the outlet 112. The first housing 12 includes a bottom plate 122 for isolating the first motor chamber 121 from the second motor chamber 131. The bottom plate 122 is formed with a fourth opening 1221. The second motor chamber 131, the fourth opening 1221, the first sub-chamber 1211 and the second sub-chamber 1212 are connected in sequence. Among them, the fluid in the second cavity 1012 can also flow into the second motor chamber 131 through the third opening 44 on the partition 40 under the drive of the first drive assembly 31 and the second drive assembly 32, and flow along the second motor chamber 131 toward the fourth opening 1221, and pass through the fourth opening 1221, the first sub-chamber 1211 and the second sub-chamber 1212 in sequence, and be pumped out from the outlet 112.

[0079] Specifically, as the first rotor 311 and the second rotor 312 of the first drive assembly 31 rotate, the pressure in the hydraulic chamber 313 between the first rotor 311 and the second rotor 312 changes, so that negative pressure is formed in the first motor chamber 121. Under the action of the negative pressure, the fluid in the first flow channel 141 can flow into the second motor chamber 131 through the third opening 44 on the partition 40, and flow toward the fourth opening 1221, and then flow into the first sub-chamber 1211 through the fourth opening 1221 and be sucked into the hydraulic chamber 313. Under the continued action of the first rotor 311 and the second rotor 312, the volume of the hydraulic chamber 313 originally filled with fluid gradually decreases, and the fluid is squeezed into the second sub-chamber 1212 and pumped out from the outlet 112, thereby generating flow power.

[0080] In some embodiments, the first end cover 11 further includes a buffer chamber 113, a first inlet 114 and a second inlet 115. The buffer chamber 113 is connected to the inlet 111, the first inlet 114 is connected to the buffer chamber 113 and the first motor chamber 121, and the second inlet 115 is connected to the buffer chamber 113 and the pump shaft 100a.

[0081] The buffer chamber 113 serves to temporarily store fluid, which can reduce the impact force of the fluid flowing into the first motor chamber 121 and the pump shaft 100a, thereby protecting the first drive component 31 in the first motor chamber 121 and the electronic control board 20 in the second cavity 1012. In addition, the setting of the buffer chamber 113 helps to improve the suction conditions of the fluid, especially at the initial stage of fluid startup or when the fluid viscosity is high, it can be easier to establish the initial fluid flow, thereby improving the working efficiency of the electronic oil pump 100.

[0082] The first inlet 114 is connected to the buffer chamber 113 and the first sub-chamber 1211 of the first motor chamber 121 .

[0083] Under the drive of the first drive assembly 31 and the second drive assembly 32, the fluid can flow into the buffer chamber 113 through the inlet 111. Figure 4As shown, the fluid in the buffer chamber 113 has two flow paths, one of which is: driven by the first drive component 31, the fluid in the buffer chamber 113 flows into the first sub-chamber 1211 through the first inlet 114, and when the first rotor 311 and the second rotor 312 rotate to a certain angle, the volume of the hydraulic chamber 313 gradually increases to form a local vacuum, so that the fluid can be sucked into the hydraulic chamber 313, and when the first rotor 311 and the second rotor 312 continue to rotate, the volume of the hydraulic chamber 313 originally filled with fluid gradually decreases, and the fluid is squeezed into the second sub-chamber 1212 and pumped out from the outlet 112. Another flow path is as follows: driven by the second drive assembly 32, the fluid in the buffer chamber 113 flows into the pump shaft 100a through the second inlet 115, and flows into the first flow channel 141 through the pump shaft 100a and the first opening 42, and then flows into the second flow channel 142 through the second opening 23 of the electric control board 20, and then converges into the first flow channel 141 through the third flow channel 143, so that the electric control board 20 is immersed in the fluid as a whole, so as to evenly dissipate the heat of the electric control board 20, and then flows into the second motor chamber 131 through the third opening 44 on the partition 40, and flows along the second motor chamber 131 toward the fourth opening 1221, and passes through the fourth opening 1221, the first sub-chamber 1211 and the second sub-chamber 1212 in sequence, and is pumped out from the outlet 112.

[0084] In some embodiments, the electronic oil pump 100 further includes a second filter element 52 . The second filter element 52 is disposed at the inlet 111 , and is used to filter the fluid flowing into the buffer chamber 113 through the inlet 111 .

[0085] The second filter element 52 may be a coarse filter for filtering larger impurities in the fluid, and the first filter element 51 may be a fine filter for filtering smaller impurities in the fluid. The fluid is filtered twice by the first filter element 51 and the second filter element 52 to reduce impurities in the fluid and improve the quality of the fluid, which can not only effectively improve the temperature uniformity of the fluid, thereby improving the heat dissipation effect of the fluid on the electric control board 20, but also reduce the impact force of the fluid on the electric control board 20 by reducing impurities in the fluid, and reduce the risk of damage to the circuit board and components, open circuit and short circuit caused by excessive impact force of the fluid, thereby improving the stability and reliability of the electric control board 20.

[0086] In some embodiments, the bottom plate 122 is provided with a second guide post 1222 extending into the second motor chamber 131, the second guide post 1222 communicates with the first motor chamber 121 and the second motor chamber 131, the pump shaft 100a is passed through the second guide post 1222, and is rotatably connected to the second guide post 1222. The second guide post 1222 can fix the pump shaft 100a to prevent the pump shaft 100a from falling off during the operation of the electronic oil pump 100.

[0087] Since one end of the pump shaft 100a used to connect to the inlet 111 can be rotatably arranged at the bottom of the first end cover 11, and the pump shaft 100a is rotatably connected to the second guide column 1222 on the bottom plate 122 of the first shell 12, the first end cover 11 and the second guide column 1222 form a double support structure for supporting the pump shaft 100a, which can not only improve the structural strength of the pump shaft 100a and reduce the risk of loosening or falling off of the pump shaft 100a during the operation of the electronic oil pump 100, but also improve the concentricity of the first drive assembly 31 and the second drive assembly 32, thereby improving the transmission efficiency and rotation stability of the first drive assembly 31 and the second drive assembly 32, and further improving the stability and reliability of the electronic oil pump 100.

[0088] In another aspect of the present application, a vehicle is provided, and the vehicle includes the electronic oil pump 100 in any one of the above embodiments.

[0089] In the technical solution of the embodiment of the present application, the specific structure of the electronic oil pump 100 refers to the above-mentioned embodiment. Since the vehicle provided in the present application adopts all the technical solutions of all the above-mentioned embodiments of the electronic oil pump 100, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An electronic oil pump, characterized in that: The electronic oil pump comprises: A pump housing, formed with an inlet and a cavity; An electric control panel is disposed in the cavity; A pump shaft is rotatably disposed on the pump housing, one end of the pump shaft is connected to the inlet, and the other end of the pump shaft extends toward the electric control board and is connected to the cavity; A drive assembly is sleeved outside the pump shaft and electrically connected to the electric control board; the drive assembly is used to drive the fluid to flow from the inlet into the cavity via the pump shaft, so that the fluid contacts the electric control board and exchanges heat with the electric control board.

2. The electronic oil pump according to claim 1, characterized in that: The electronic oil pump also includes a temperature measuring component, which is electrically connected to the electric control board. The temperature measuring component is used to detect the temperature of the electric control board. The electric control board is used to control the rotation speed of the driving component in response to the detected temperature of the temperature measuring component, thereby controlling the flow rate of the fluid flowing into the cavity.

3. The electronic oil pump according to claim 1, characterized in that: The electronic oil pump further comprises a partition plate, wherein the partition plate is arranged between the pump shaft and the electric control board, and the electric control board is spaced apart from the pump shaft and the partition plate respectively, and a first flow channel is formed between the partition plate and the electric control board; The partition is provided with a first opening connected to the first flow channel, the other end of the pump shaft is inserted into the first opening, and the fluid flowing out of the pump shaft flows into the first flow channel through the first opening to contact the first side of the electric control board toward the partition.

4. The electronic oil pump according to claim 3, characterized in that: The electric control board is spaced apart from the bottom wall of the cavity to form a second flow channel between the electric control board and the bottom wall. The electric control board is provided with a second opening connecting the first flow channel and the second flow channel. The second opening and the second flow channel are used to pass the fluid so that the fluid contacts the second side of the electric control board away from the partition.

5. The electronic oil pump according to claim 4, characterized in that: The first opening is coaxially arranged with the second opening.

6. The electronic oil pump according to claim 4, characterized in that: A third flow channel is formed between the end of the electric control board facing the pump housing and the pump housing, the third flow channel connects the first flow channel and the second flow channel, and the third flow channel is at least used to guide the fluid in the second flow channel to the first flow channel.

7. The electronic oil pump according to claim 4, characterized in that: The cavity includes a first cavity and a second cavity, the drive assembly and the pump shaft are arranged in the first cavity, the electric control board is arranged in the second cavity, the partition is arranged on a side of the first cavity close to the second cavity, and the partition is further provided with a third opening connecting the first flow channel and the first cavity; The pump housing also forms an outlet connected to the first cavity. The fluid in the first flow channel flows into the first cavity through the third opening under the drive of the drive component, so that the fluid exchanges heat with at least part of the drive component and is pumped out from the outlet.

8. The electronic oil pump according to claim 3, characterized in that: The partition comprises: A first guide column, formed with the first opening; a first filter element, disposed in the first opening, for filtering the fluid flowing out of the pump shaft; Wherein, the first guide column includes a drainage surface, which is located on the inner surface of one end of the first guide column close to the electric control board. The drainage surface is inclined from the end close to the drive assembly toward a direction away from the axis of the first guide column and extends toward the direction of the electric control board.

9. The electronic oil pump according to any one of claims 1 to 8, characterized in that: A protective layer is provided on the surface of the electric control board and on the surfaces of the components arranged on the electric control board.

10. A vehicle, characterized in that: The vehicle comprises the electronic oil pump according to any one of claims 1 to 9.

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