Electronic oil pump with isolation structure and vehicle

Abstract

The application discloses an electronic oil pump with an isolation structure and a vehicle, and the electronic oil pump with the isolation structure comprises a shell, a support plate and a plurality of conductive columns for transmitting electric energy. The shell is in a cylindrical structure; the support plate is arranged in the interior of the shell and is in sealing connection with the shell in the periphery to divide the interior area of the shell into a first chamber provided with a driving plate and a second chamber provided with a power device, a plurality of first through holes are arranged on the support plate; the conductive columns are arranged on the support plate through the first through holes in the support plate, and the two ends of the conductive columns are fixedly connected with the driving plate in the first chamber in the shell and the power device in the second chamber in the shell respectively, and the combination surface of the first through holes and the conductive columns is provided with a protrusion and a groove to seal the support plate and the conductive columns. The interior area of the electronic oil pump is isolated into two parts by the support plate, so that the oil gas or the oil liquid is prevented from invading into the part provided with the driving plate under different temperature conditions, and the driving plate is prevented from being invalid due to the invasion of the oil liquid.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic oil pumps, and particularly relates to an electronic oil pump with an isolation structure and a vehicle. BACKGROUND

[0002] The oil-cooled power electronic oil pump with an isolation structure is an electronic control oil pump that uses oil to cool itself and provides power for a hydraulic system or a lubricating system. The oil-cooled power electronic oil pump with an isolation structure is divided into a self-cooled type and an isolated type, and the main difference lies in whether the motor structure of the electronic oil pump with an isolation structure is directly cooled by oil in the pump head. The self-cooled type directly introduces oil in the pump head into the inner cavity to cool the stator and rotor of the built-in motor of the electronic oil pump with an isolation structure, and the isolated type completely separates the pump head region provided with oil from the stator and rotor of the built-in motor of the electronic oil pump with an isolation structure.

[0003] However, no matter which way the oil-cooled power electronic oil pump with an isolation structure adopts, oil gas (accumulated after invading oil gas will also form oil) or oil may invade the driving board inside the electronic oil pump. Since the oil in the electronic oil pump with an isolation structure is in a semi-fluid state at low temperature, the flow effect is poor, and with the transmission of vibration during vehicle operation, the invading oil will oscillate in the driving board region and repeatedly impact the electronic components connected by a patch connection process on the driving board. The electronic components will be separated from the PCB under long-term impact, causing the driving board to fail, thereby causing the electronic oil pump with an isolation structure to fail. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an electronic oil pump with an isolation structure and a vehicle.

[0005] The purpose of the present application is achieved by the following technical solutions:

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

[0007] a cylindrical shell;

[0008] a support plate arranged inside the shell and sealingly connected to the outer periphery of the shell to divide the internal region of the shell into a first chamber provided with a driving board and a second chamber provided with a power device, the support plate being provided with a plurality of first through holes;

[0009] a plurality of conductive columns for transmitting electric energy, which are arranged on the support plate through the first through holes in the support plate, and the two ends of the conductive columns are fixedly connected with the driving board in the first chamber and the power device in the second chamber in the shell, respectively; and

[0010] The first through hole in the support plate is divided into a first part close to the driving plate and a second part close to the power device, the inner wall of the first part of the first through hole and the outer wall of the conductive column jointly form a cavity for accommodating the filling medium, the inner wall of the second part of the first through hole is provided with a plurality of protrusions which are in sealing connection with a plurality of grooves provided on the conductive column, and the groove closest to the power device in the second cavity is provided with a first sealing element.

[0011] In some embodiments, the housing is sealingly connected with the rear end cover, and the driving plate in the first cavity in the housing has a contact gap with the rear end cover.

[0012] In some embodiments, the number of protrusions on the inner wall of the first through hole in the support plate is more than two, and the number of grooves in the conductive column is more than the number of protrusions on the inner wall of the first through hole.

[0013] In some embodiments, the support plate further comprises:

[0014] A plurality of second through holes are circumferentially distributed on the outer periphery of the support plate, and a plurality of first screws pass through the second through holes to fixedly connect the support plate with the housing;

[0015] A crotch portion for placing a second sealing element sealing the connection and cooperation position of the support plate and the housing; and

[0016] A recess formed by the center position of the end face of the support plate close to the power device in the second cavity being recessed to the other side.

[0017] In some embodiments, the support plate is further provided with a reinforcing rib for preventing the support plate from deforming, and the reinforcing rib comprises:

[0018] A mesh rib provided on the outer periphery of the first through hole on the end face of the support plate close to the driving plate in the first cavity in the housing;

[0019] A ring rib provided on the outer periphery of each second through hole in the support plate, and the outer convex part of the ring rib is 1-2 mm higher than the outer peripheral end face of the second through hole in the support plate;

[0020] A first pull rib provided between adjacent ring ribs, and the height of the first pull rib is equal to that of the ring rib;

[0021] A second pull rib provided between the ring rib and the recess in the support plate; and

[0022] A plurality of third pull ribs equally spaced between the outer periphery of the crotch portion in the support plate and the outer periphery of the recess in the support plate.

[0023] In some embodiments, the drive plate is provided with a third through hole and a fourth through hole on two sides thereof respectively; a second screw is used to fix one side of the drive plate to the shell through the third through hole in the drive plate; and the end of the conductive column is fixed to the other side of the drive plate through the fourth through hole in the drive plate, and the end of the conductive column is higher than the end surface of the drive plate.

[0024] In some embodiments, the power device comprises:

[0025] a stator connected to one end of each of the conductive columns in the second chamber in the shell, and a rotor provided with a bushing and arranged in the recess in the support plate.

[0026] In some embodiments, the inner wall of the bushing is a smooth cylindrical surface, the outer wall of the bushing is provided with protrusions and recesses alternately, the inner wall of the recess in the support plate is provided with protrusions and recesses alternately and is matched with the outer wall of the bushing so that the outer wall of the bushing and the inner wall of the recess in the support plate are tightly fitted, and the outer side of the protrusion in the bushing is provided with a spiral groove, and the setting direction of the spiral groove is the same as the rotation direction of the rotor in the power device.

[0027] In some embodiments, the number of phases of the stator, the number of the first through holes in the support plate and the number of the conductive columns in the power device are all three; and the adjacent first through holes in the support plate all have the same interval included angle with the center of the support plate as the center.

[0028] In a second aspect, a vehicle is provided, comprising all the electronic oil pumps with the isolation structure.

[0029] The present application has the following beneficial effects: the present application has an isolation structure which separates the inner region of the electronic oil pump into two parts, so that the oil gas or oil liquid cannot enter the part region provided with the drive plate under different temperature conditions, thereby ensuring that the drive plate will not fail due to the invasion of oil liquid. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1 is the overall structure diagram of the electronic oil pump with the isolation structure provided by the present application in an embodiment;

[0032] Figure 2is a force analysis schematic diagram of an electronic oil pump with an isolation structure provided by the present application in an embodiment

[0033] Figure 3 is a structural schematic diagram of one side end surface of a support plate provided by the present application in an embodiment

[0034] Figure 4 is a structural schematic diagram of the other side end surface of the support plate provided by the present application in an embodiment

[0035] Figure 5 is a structural schematic diagram of a cross section of the support plate provided by the present application in an embodiment

[0036] Figure 6 is a structural schematic diagram of a conductive column provided by the present application in an embodiment

[0037] Figure 7 is a structural schematic diagram of a driving plate provided by the present application in an embodiment

[0038] Figure 8 is a structural schematic diagram of a housing in a first perspective provided by the present application in an embodiment

[0039] Figure 9 is a structural schematic diagram of the housing in a second perspective provided by the present application in an embodiment

[0040] Figure 10 is a connection structural schematic diagram of the support plate and the housing provided by the present application in an embodiment

[0041] Figure 11 is a connection structural schematic diagram of the driving plate and the housing provided by the present application in an embodiment

[0042] Figure 12 is a structural schematic diagram of a bushing in a first perspective provided by the present application in an embodiment

[0043] Figure 13 is a structural schematic diagram of the bushing in a second perspective provided by the present application in an embodiment DETAILED DESCRIPTION

[0044] In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the drawings.

[0045] As shown in Figure 1 , an electronic oil pump with an isolation structure is provided, comprising a housing 10, a support plate 20 and a plurality of conductive columns 30 for transmitting electric energy.

[0046] The housing 10 has a cylindrical structure. A support plate 20 is disposed inside the housing 10, and its outer periphery is sealed to the housing 10, dividing the internal area of ​​the housing 10 into a first chamber 101 with a drive plate 40 and a second chamber 102 with a power device 50. The support plate 20 has several first through holes 201, and conductive posts 30 pass through the first through holes 201 in the support plate 20 and are fixedly connected at both ends to the drive plate 40 in the first chamber 101 and the power device 50 in the second chamber 102 of the housing 10, respectively.

[0047] like Figure 1 , 3 As shown in Figure 4, in one embodiment, the support plate 20 further includes a second through hole 202, a crotch portion 203, and a recess 204. The second through holes 202 are evenly distributed around the outer periphery of the support plate 20 and are used to connect the housing 10. Specifically, the housing 10 has an annular mounting step 103, which extends inward from the middle section of the housing 10. A first screw 205 passes through the second through hole 202 in each support plate 20 to lock the outer periphery of the support plate 20 and the step end face of the annular mounting step 103 in the housing 10. The crotch portion 203 is used to place a second sealing element 207 to seal the connection and mating position between the support plate 20 and the housing 10. The recess 204 is formed by recessing from the center position of the end face of the support plate 20 near the power unit 50 in the second chamber 102 to the other side, and is used to assemble the rotor 502 in the power unit 50.

[0048] like Figure 3 As shown, in one embodiment, the number of second through holes 202 in the support plate 20 depends on the diameter of the first screw 205. The straight-line distance between the center points of the second through holes 202 in adjacent support plates 20 is approximately 10 times the diameter of the first screw 205. The number of second through holes 202 in the support plate 20 can be deduced from this. This is used to fix and connect the drive plate 40.

[0049] like Figures 3-11 As shown, in one embodiment, one side of the drive plate 40 is fixedly connected to the housing 10, and the other side of the drive plate 40 is fixedly connected to one end of the conductive post 30. Specifically, the housing 10 has a pillar 104, which is disposed on the portion of the housing 10 that forms the first chamber 101. The drive plate 40 has a third through hole 401 and a fourth through hole 402 on both sides respectively. A second screw 403 passes through the third through hole 401 in the drive plate 40 to lock one side of the drive plate 40 to the pillar 104 on the housing 10. The end of one end of the conductive post 30 passes through the fourth through hole 402 in the drive plate 40 and protrudes above the end face of the drive plate 40. Soldering is performed at the connection between the conductive post 30 and the drive plate 40 so that the other side of the drive plate 40 is fixedly connected to the conductive post 30.

[0050] Specifically, the electronic oil pump with the isolation structure further comprises a rear end cover 60, a conductive cable 70, a special-shaped sealing member 601 and a rubber sealing gasket 602. One end of the conductive cable 70 is connected with an external power supply and a vehicle ECU, and the other end of the conductive cable 70 penetrates through the rear end cover 60 into the inside of the shell 10 and is connected with the driving board 40. The special-shaped sealing member 601 is arranged at the joint surface of the rear end cover 60 and the shell 10 so that the rear end cover 60 and the shell 10 are sealingly connected. The rubber sealing gasket 602 is wrapped around the outer periphery of the conductive cable 70 and sealingly connected with the rear end cover 60, so that the shell 10, the rear end cover 60 and the rubber sealing gasket 602 jointly form a sealed area to prevent oil in the sealed area from leaking out. The sealing modes of the special-shaped sealing member 601 and the rubber sealing gasket 602 are already mature applications in the industry, and thus will not be described here. One end of the conductive cable 70 is connected with the external power supply and the vehicle ECU, and the other end of the conductive cable 70 penetrates through the rear end cover 60 and is sealingly connected with the driving board 40 in the inside of the shell 10. The driving board 40 absorbs the electric energy provided by the external power supply according to the signal instruction of the vehicle ECU, logically distributes the electric energy, and then transmits the output electric energy of the logical control to the power device 50 through the conductive column 30 inserted on the support plate 20. Finally, the power device 50 drives the pump head of the electronic oil pump to complete the process of oil absorption and oil discharge.

[0051] It can be understood that the support plate 20 is arranged in the inside of the shell 10 and sealingly connected with the shell 10 to divide the inside area of the shell 10 into a first chamber 101 provided with the driving board 40 and a second chamber 102 provided with the power device 50, i.e. the first chamber 101 is jointly formed by the rear end cover 60, the rubber sealing gasket 602, a part of the shell 10 and the support plate 20, and is a protected electric energy logical distribution work area; the second chamber 102 is jointly formed by another part of the shell 10 (the oil inlet 105 and the oil outlet 106 are arranged on the shell 10 of the part) and the support plate 20, and is an electric energy conversion work area containing oil gas and oil.

[0052] In order to prevent the oil in the second chamber 102 from leaking into the first chamber 101 and causing the driving board 40 arranged in the first chamber 101 to fail, it is necessary to ensure that:

[0053] (1) Under different temperature conditions, the connection between the support plate 20 and the shell 10 always maintains a sealing state. Specifically, a second sealing member 207 is arranged at the connection position of the support plate 20 and the shell 10 to seal, and the second sealing member 207 generally adopts an O-shaped sealing ring. This sealing mode is already a mature application in the industry, and thus will not be described here.

[0054] (ii) In different temperature conditions, the connection between the support plate 20 and the conductive column 30 is always in a sealed state, and the specific processing method is: the first through hole 201 in the support plate 20 is divided into a first part 2011 close to the driving plate 40 and a second part 2012 close to the power device 50, the inner wall of the first part 2011 in the first through hole 201 and the outer wall of the conductive column 30 together form a cavity 2014 for accommodating the filling medium 2013, a plurality of protrusions 2015 provided on the inner wall of the second part 2012 in the first through hole 201 are in sealing connection with a plurality of grooves 301 provided on the conductive column 30, and the groove 301 closest to the power device 50 in the second chamber 102 in the conductive column 30 is provided with a first sealing element 206. In an embodiment, the first sealing element 206 is specifically provided as at least one O-shaped sealing ring.

[0055] As shown in Figures 1-11 , the specific principle of keeping the connection between the support plate 20 and the conductive column 30 in a sealed state under different temperature conditions is as follows:

[0056] For the sake of illustration, we will Figure 1 simplify the force analysis diagram as Figure 2 , the connection point of one side of the driving plate 40 and the shell 10 locked and connected by the second screw 403 is set as the first fulcrum 801, the pressure formed by the rotation of the second screw 403 at the first fulcrum 801 is set as the first pressure 803, and then, on the other side of the first fulcrum 801, i.e. the side of the driving plate 40 connected with the conductive column 30, there will be a counterforce of the first pressure 803, which is set as the second pressure 804. The connection point of the support plate 20 and the shell 10 locked and connected by the first screw 205 is set as the second fulcrum 802, and the pressure formed by the rotation of the first screw 205 at the second fulcrum 802 is set as the third pressure 805. Because the first fulcrum 801 and the second fulcrum 802 are both locked by the screws on the shell 10, they are in a completely fixed state relative to the shell 10, and the side of the driving plate 40 connected with the conductive column 30 is not fixedly connected with the shell 10, under the existence of the second pressure 804, the side of the driving plate 40 connected with the conductive column 30 has a displacement trend of moving towards the rear end cover 60, and since the driving plate 40 and the conductive column 30 are weldedly connected to form a unified whole, the conductive column 30 also has a displacement trend of moving towards the rear end cover 60.

[0057] At room temperature, the specific processing method of the connection between the support plate 20 and the conductive column 30 according to the present application makes the conductive column 30 and the support plate 20 in the most reasonable sealed state, and due to the existence of the second pressure 804, the displacement trend of the conductive column 30 moving towards the rear end cover 60 will increase the bonding force between the conductive column 30 and the support plate 20 in a micro sense, and strengthen the sealing effect.

[0058] It can be understood that, because the conductive column 30 needs to be conductive, it is made of metal material; in order to avoid the problem of electric shock caused by short circuit between the electric energy passing through the support plate 20 and the rear end cover 60 and the shell 10, the support plate 20 should be made of non-conductive material such as plastic, bakelite powder, preferably plastic material, and further, in order to ensure the reliability of the plastic material, the modified nylon material is preferred. Therefore, under high temperature, the metal material of the conductive column 30 has a smaller expansion amount than the plastic of the support plate 20; under low temperature, the metal material of the conductive column 30 has a smaller cold shrinkage than the plastic of the support plate 20.

[0059] Under high temperature, because the metal material of the conductive column 30 has a smaller expansion amount than the plastic of the support plate 20, the bulge 2015 in the second part 2012 of the first through hole 201 in the support plate 20 expands more than the groove 301 in the conductive column 30, that is, the "U-shaped" side length of the groove 301 in the conductive column 30 is smaller than the "anti-U-shaped" circumference of the bulge 2015 in the first through hole 201 of the support plate 20, so that the bulge 2015 in the first through hole 201 of the support plate 20 exerts a volume expansion pressure on each contact surface of the groove 301 in the conductive column 30, which makes the contact surfaces of the two more closely fitted. Further, because the groove 301 in the conductive column 30 closest to the power device 50 in the second chamber 102 is provided with the first sealing member 206, the thermal expansion at this time will increase the interference compression amount of the first sealing member 206, thereby enhancing the sealing effect. Further, due to the existence of the second pressure 804, the displacement trend of the conductive column 30 moving towards the rear end cover 60 will increase the bonding force between the conductive column 30 and the support plate 20 at the micro level, thereby enhancing the sealing effect. Therefore, under high temperature, the connection between the conductive column 30 and the support plate 20 is also in a sealed state.

[0060] At low temperature, because the cold shrinkage of the metal material of the conductive column 30 is smaller than the cold shrinkage of the plastic of the support plate 20, the protrusion 2015 on the inner wall of the second part 2012 of the first through hole 201 of the support plate 20 is reduced more than the groove 301 of the conductive column 30, that is, the "U-shaped" side length of the groove 301 of the conductive column 30 is greater than the "inverted U-shaped" circumference of the protrusion 2015 on the inner wall of the second part 2012 of the first through hole 201 of the support plate 20, which will cause a local gap between the conductive column 30 and the support plate 20, thereby reducing the bonding force of the protrusion 2015 in the first through hole 201 of the support plate 20 and the groove 301 of the conductive column 30. At this time, because of the existence of the local gap, the second pressure 804 can drive the driving plate 40 and the conductive column 30 to displace together in the direction of the rear end cover 60, and this displacement will stop after the groove 301 of the conductive column 30 and the protrusion 2015 on the inner wall of the second part 2012 of the first through hole 201 of the support plate 20 re-form end face fitting. Further, because the inner wall of the first part 2011 of the first through hole 201 and the outer wall of the conductive column 30 together form a cavity 2014 in which the filling medium 2013 (the filling medium 2013 is usually a medium with glue properties such as silicone, epoxy resin, gel, etc., that is, it presents a flowing state before curing, and after reaching the predetermined curing condition or working condition, it no longer has a flowing state) is filled, on the one hand, the filling medium 2013 can automatically fill the local gap to enhance the sealing effect after the conductive column 30 is displaced; on the other hand, the filling medium 2013 can superimpose a deformation stress during the displacement of the conductive column 30 and after the conductive column 30 returns to the initial position. Further, because the first sealing element 206 is arranged in the groove 301 of the conductive column 30 closest to the power device 50 in the second cavity 102, when the oil or oil gas invades from the connection between the support plate 20 and the conductive column 30, it first passes through the first sealing element 206, and the first sealing element 206 can form an oil medium passage to lock the oil or oil gas in the cavity of the first sealing element 206 and flow in a certain direction and path. Therefore, at this time, the conductive column 30 and the support plate 20 still have multiple tight connection relationships, in addition, oil gas liquefaction and oil liquid semi-fluidification are easy at low temperature, the oil pressure at the connection between the conductive column 30 and the support plate 20 is smaller than that at high temperature and normal temperature, so at low temperature, the connection between the conductive column 30 and the support plate 20 is also in a sealed state.

[0061] In order to prevent the displacement distance of the driving plate 40 and the conductive column 30 under the action of the second pressure 804 from being too large and causing an irreproducible displacement, as shown in Figure 1 In an embodiment, the shell 10 is sealingly connected with the rear end cover 60, and there is a distance of the contact gap 806 between the driving plate 40 in the first cavity 101 of the shell 10 and the rear end cover 60.

[0062] Understandably, when the temperature is too low, the local gap between the conductive post 30 and the support plate 20 may be too large, which may lead to an excessive displacement distance between the drive plate 40 and the conductive post 30, resulting in a displacement distance that cannot be restored to the initial position after the temperature returns to normal. Therefore, there is a contact gap 806 between the drive plate 40 and the rear cover 60 in the first chamber 101, so as to ensure that the drive plate 40 will abut against the rear cover 60 after displacing a certain distance in the direction of the rear cover 60, thereby preventing further displacement.

[0063] To ensure that the protrusion 2015 on the inner wall of the first through hole 201 in the support plate 20 completely fits the groove 301 in the conductive post 30, such as Figure 1 As shown, in one embodiment, if the number of protrusions 2015 on the inner wall of the first through hole 201 in the support plate 20 is N, then the number of grooves 301 in the conductive post 30 is N+2.

[0064] like Figure 1 As shown, in one embodiment, the power unit 50 includes a stator 501 and a rotor 502. The stator 501 in the power unit 50 is connected to the other end of each conductive post 30, and one end of the rotor 502 in the power unit 50, which is fitted with a bushing 503, is located in the recess 204 of the support plate 20.

[0065] It is understandable that the drive plate 40 controls the transmission of electrical energy to the stator 501 in the power unit 50 via the electronic oil pump, thereby forming a rotating magnetic field between the inner circle of the stator 501 and the outer circle of the rotor 502 in the power unit 50. This rotating magnetic field drives the rotor 502 in the power unit 50 to rotate, thereby driving the pump head of the electronic oil pump to draw in and discharge oil. This rotation principle is well known in the industry and will not be elaborated further. Since the conductive posts 30 are set to connect the stator 501 in the power unit 50 to the drive plate 40, the number of conductive posts 30 and the number of first through holes 201 in the support plate 20 through which the conductive posts 30 are installed are both set according to the number of phases of the stator 501 in the power unit 50 (the number of phases of the stator is the number of winding groups of the stator, indicating how many winding groups are inside the stator).

[0066] like Figure 3 As shown, in one embodiment, the stator 501 in the power device 50 is preferably a three-phase stator, that is, the number of phases of the stator 501 is three, and the number of first through holes 201 and the number of conductive posts 30 in the support plate 20 are also three; in one embodiment, the first through holes 201 in adjacent support plates 20 have the same interval angle with the center of the support plate 20 as the center.

[0067] To ensure that the rotor 502 in the power unit 50 does not dislodge from the recess 204 in the support plate 20 when rotating, such as Figures 12-13As shown, in an embodiment, the inner wall of the bushing 503 on the rotor 502 is a smooth cylindrical surface, the outer wall of the bushing 503 on the rotor 502 is provided with protrusions 5031 and recesses 5032 alternately, the inner wall of the recess 204 in the support plate 20 is provided in cooperation with the outer wall of the bushing 503 so that the outer wall of the bushing 503 and the inner wall of the recess 204 in the support plate 20 are tightly fitted, the outer side of the protrusion 5031 in the bushing 503 is provided with a helical groove 5033, and the setting direction of the helical groove 5033 is the same as the rotation direction of the rotor 502 in the power device 50. In an embodiment, the helical groove 5033 is preferably a continuous helical groove 5033 which is easy to process and has the best anti-rotation effect. In addition, the helical groove 5033 can also be set as a discontinuous helical groove 5033, and can also be set as a segmented continuous or discontinuous ring groove.

[0068] It can be understood that the rotor 502 and the bushing 503 have a circumferentially wrapped contact connection relationship, and when the rotor 502 is repeatedly started and stopped, the torque of the rotor 502 will also be transmitted to the bushing 503 synchronously, and then the helical groove 5033 of the protrusion 5031 provided on the outer side of the bushing 503 will always be in a tight fitting relationship with the object containing the bushing 503, i.e. the inner wall of the recess 204 in the support plate 20, and will not be loose. This relationship is similar to the screwing fitting relationship between a screw thread and a screw hole, and when the rotor 502 axially moves, the rotor 502 can be effectively prevented from being pulled out of the recess 204 in the support plate 20.

[0069] In order to ensure that the support plate 20 is stable and does not deform under different temperature conditions, the support plate 20 is provided with a plurality of reinforcing ribs 208, and the reinforcing ribs 208 are provided with a plurality of reinforcing ribs 208. Figures 3-5 As shown, in an embodiment, the support plate 20 is further provided with reinforcing ribs 208, and the reinforcing ribs 208 include a mesh rib 2081, a ring rib 2082, a first pull rib 2083, a second pull rib 2084, and a third pull rib 2085. The mesh rib 2081 is located on the outer periphery of the first through hole 201 on the end face of the support plate 20 close to the driving plate 40 in the first chamber 101 in the housing 10. The ring rib 2082 is located on the outer periphery of each second through hole 202 in the support plate 20, and the outer convex part is 1-2 mm higher than the outer periphery end face of the second through hole 202 in the support plate 20. The first pull rib 2083 is located between adjacent ring ribs 2082 and is set to have a height equal to that of the ring rib 2082. The second pull rib 2084 is located between the ring rib 2082 and the recess 204 in the support plate 20. A plurality of third pull ribs 2085 which are equally spaced are located between the outer periphery of the crotch portion 203 in the support plate 20 and the outer periphery of the recess 204 in the support plate 20.

[0070] It can be understood that the mesh rib 2081 effectively reduces the deformation of the thin-walled plane of the support plate 20, increases the strength of the first through hole 201 in the support plate 20, and prevents the first through hole 201 in the support plate 20 from deforming. After the second through hole 202 in the support plate 20 is in contact with the first screw 205 to generate compressive stress, it is easy to sink, and the ring rib 2082 can effectively reduce the area of such sinking and limit it within an acceptable range. The compressive stress between adjacent first screws 205 is easy to cause the part between the second through holes 202 in adjacent support plates 20 to arch, so first tension ribs 2083 are additionally provided between adjacent ring ribs 2082, similar to the tension lock of a bridge, for enhancing the strength of this section to offset the compressive stress between the first screws 205. Similarly, because the first screws 205 are uniformly distributed around the circumference of the support plate 20, the compressive stress between adjacent first screws 205 is also easy to cause the center of the support plate 20 to arch, so second tension ribs 2084 are provided between the ring rib 2082 and the recess 204 in the support plate 20, for enhancing the strength of the circumference to offset the compressive stress between the first screws 205, which has the same principle as the first tension rib 2083. The outer circumference of the crotch portion 203 in the support plate 20 and the outer circumference of the recess 204 in the support plate 20 can be regarded as two concentric circles (equivalent to the outer tire and the center hub of the bicycle tire, connected by the support of the spoke), and a plurality of third tension ribs 2085 with the same linear distance are provided between the concentric circles, so as to ensure that the crotch portion 203 in the support plate 20 and the recess 204 in the support plate 20 are concentrically vibrated, effectively transmitting the impact force generated by the rotation of the rotor 502 in the recess 204 of the support plate 20, and enhancing the stability of the support plate 20.

[0071] The above only describes the preferred embodiments of one or more embodiments of the present application, and does not limit one or more embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of one or more embodiments of the present application.

Claims

1. An electronic oil pump having an isolation structure, characterized by comprising: The utility model relates to a kind of power transmission device, including: Cylindrical shell; Supporting plate, be arranged in the inside of the shell, outer periphery is sealedly connected with the shell, to divide the inside area of the shell into the first chamber with drive plate and the second chamber with power device, the supporting plate is equipped with several first through holes; Several electrically conductive columns for transmitting electric energy, pass through the first through hole in the supporting plate and be equipped on the supporting plate, the both ends of the electrically conductive column are respectively fixedly connected with the drive plate in the first chamber in the shell and the power device in the second chamber in the shell;And The first through hole in the supporting plate is divided into the first part close to the drive plate and the second part close to the power device, the inner wall of the first part in the first through hole and the outer wall of the electrically conductive column jointly form cavity for accommodating filling medium, the inner wall of the second part in the first through hole is equipped with several protrusions, and the several grooves equipped on the electrically conductive column are mutually sealedly connected, the groove in the electrically conductive column closest to the power device in the second chamber is equipped with first sealing element.

2. The electronic oil pump having an isolation structure according to claim 1, characterized by: The shell is sealedly connected with rear end cover, and the drive plate in the first chamber in the shell has a distance from the rear end cover.

3. The electronic oil pump having an isolation structure according to claim 1, characterized by: The number of protrusions of the inner wall of the first through hole in the supporting plate is multiple, and the number of grooves in the electrically conductive column is two more than the number of protrusions of the inner wall of the first through hole.

4. The electronic oil pump having an isolation structure according to claim 1, characterized by, The supporting plate further includes: Several second through holes are circumferentially distributed on the outer periphery of the supporting plate, and several first screws pass through the second through holes to fixedly connect the supporting plate with the shell; Crotch portion for placing second sealing element sealing the connecting and cooperating position of the supporting plate and the shell;And The recess is formed by the center position of the side end face of the supporting plate close to the power device in the second chamber to the other side.

5. The electronic oil pump having an isolation structure according to claim 4, characterized by, The supporting plate is further provided with a reinforcing rib for preventing the supporting plate from deforming, and the reinforcing rib includes: Mesh rib, arranged on the outer periphery of the first through hole on the side end face of the supporting plate close to the drive plate in the first chamber in the shell; Ring rib, arranged on the outer periphery of each second through hole in the supporting plate, and the outer convex part of the ring rib is 1-2 mm higher than the outer periphery end face of the second through hole in the supporting plate; First pull rib, arranged between adjacent ring ribs, and the height of the first pull rib is equal to that of the ring rib; Second pull rib, arranged between the ring rib and the recess in the supporting plate;And Several equal-interval third pull ribs are arranged between the outer periphery of the crotch portion in the supporting plate and the outer periphery of the recess in the supporting plate.

6. The electronic oil pump having an isolation structure according to claim 1, characterized by: The two sides of the drive plate are respectively provided with third through hole and fourth through hole;Second screw passes through the third through hole in the drive plate to fixedly connect one side of the drive plate with the shell;The end of the electrically conductive column passes through the fourth through hole in the drive plate and is fixedly connected with the other side of the drive plate, and the end of the electrically conductive column is higher than the end face of the drive plate.

7. The electronic oil pump having an isolation structure according to claim 4, characterized by, The power device includes: Stator, connected with one end of each electrically conductive column in the second chamber in the shell;And Rotor, one end of the sleeve is arranged in the recess in the supporting plate.

8. The electronic oil pump having an isolation structure according to claim 7, characterized by: The inner wall of the bushing is a smooth cylindrical surface, the outer wall of the bushing is provided with protrusions and recesses alternately, the inner wall of the recess in the support plate is provided with protrusions and recesses alternately and is matched with the outer wall of the bushing, so that the outer wall of the bushing and the inner wall of the recess in the support plate are tightly fitted, and the outer side of the protrusion in the bushing is provided with a spiral groove, and the setting direction of the spiral groove is the same as the rotating direction of the rotor in the power device.

9. The electronic oil pump having an isolation structure according to claim 7, characterized by: The number of phases of the stator in the power device, the number of the first through holes in the support plate and the number of the conductive columns are all three; adjacent first through holes in the support plate all have the same interval included angle with the center of the support plate as the center.

10. A vehicle characterized by comprising: The electronic oil pump with the isolation structure comprises the electronic oil pump with the isolation structure according to any one of claims 1-9.

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