Full-water-cooling automobile electronic water pump with split type water-cooling plate

Abstract

The invention discloses a full-water-cooling automobile electronic water pump containing a split type water-cooling plate, and relates to the technical field of electronic water pumps, the electronic water pump comprises a water pump shell, a motor shell and a water pump rear cover, a stator iron core is arranged in the motor shell, the stator iron core sleeves a water-stop sheet, the water-stop sheet sleeves a rotor, the rotor and the motor shell are located on the same central axis, and the water-stop sheet sleeves the water-stop sheet. A middle plate is arranged at the bottom end of the inner wall of the machine shell and matched with the machine shell, a heat dissipation plate is arranged at the bottom end of the middle plate, the bottom end of the heat dissipation plate is coated with heat dissipation glue, and a circuit board is arranged at the bottom end of the heat dissipation plate.

Description

Technical Field

[0001] The invention relates to the technical field of electronic water pumps, in particular to a full-water-cooled automobile electronic water pump comprising a split-type water-cooling plate. Background Art

[0002] In order to reduce the heat of the driver board, the existing electronic water pump adopts the method of water cooling plate heat dissipation. However, due to structural limitations, the heat dissipation area cannot be increased, and it only relies on plane heat dissipation. At the same time, the motor part adopts natural heat dissipation. When the above method is adopted, since the driver board and the motor are a centralized assembly structure, the heat generated by the motor part when the water pump is working will be transferred to the water cooling plate, causing the temperature of the water cooling plate to rise. In addition to the temperature of the driver board itself during operation, the temperature of the motor will also increase, which will cause the temperature of the circuit board to rise and reduce the lifespan. Summary of the invention

[0003] The object of the present invention is to provide a fully water-cooled automotive electronic water pump with a split water-cooling plate to solve the problems raised in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions: The electronic water pump includes a water pump housing, a motor housing and a water pump back cover. A stator core is arranged in the motor housing. The stator core is sleeved on a water baffle plate. The water baffle plate is sleeved on a rotor. The rotor and the motor housing are on the same central axis. A middle plate is arranged at the bottom end of the inner wall of the housing. The middle plate cooperates with the housing. A heat sink is arranged at the bottom end of the middle plate. Heat dissipation glue is applied at the bottom end of the heat sink. A circuit board is arranged at the bottom end of the heat sink.

[0005] The water pump housing is the top cover, the motor housing is located in the housing, and the water pump rear cover is the bottom cover. The three constitute the housing assembly of the electronic water pump, wherein the stator core is located in the motor housing, a water baffle is provided in the stator core, a water baffle is provided in the middle of the stator core, the water baffle is connected to the motor housing, so that the stator core is in a sealed space, the water baffle is used to protect the stator core from the influence of liquid, a rotor is provided in the internal space of the water baffle, the top end of the hollow shaft of the rotor passes through the top end of the housing, the bottom end of the hollow shaft of the rotor passes through the middle plate, the middle plate is located at the bottom end of the housing, and the top end of the housing cooperates with the inner wall of the water baffle, the heat sink is located at the bottom end of the middle plate, the heat sink is used to absorb liquid heat, thereby reducing the influence of high temperature on the internal structure, the heat dissipation glue is used to assist the heat dissipation of the heat sink and improve the heat dissipation efficiency, the circuit board is located at the bottom end of the heat dissipation glue layer, because the heat sink structure blocks the liquid, preventing the liquid from affecting the circuit board.

[0006] Furthermore, an impeller is provided at the top of the motor housing, and the impeller is used to convert fluid kinetic energy. The impeller is rotatably connected to the motor housing. A cavity A is provided between the top of the motor housing and the water pump housing, and the impeller is located in cavity A. A water pipe is provided on one side of the water pump housing, and the water pipe is connected to cavity A. A through hole is provided on the motor housing, and the through hole is connected to cavity A. A cavity B is provided between the heat sink and the middle plate, and the through hole is connected to cavity B. The liquid flow process is that the liquid is sucked in from the impeller inlet and flows out from the outlet. During the outflow process, the fluid pressure increases. Under the action of pressure, the liquid flows in from the water jacket inlet of the motor housing to cool the motor, flows through the split heat sink, and at the same time, there are heat sink columns on the heat sink to cool the drive plate, and then flows back to the impeller inlet from the hollow shaft of the rotor assembly to complete a heat dissipation cycle.

[0007] The impeller is rotatably connected to the motor housing, and the impeller is electrically connected to an external power supply. When the impeller rotates, it stirs the liquid to flow. The liquid is sucked in from the impeller inlet and flows out from the outlet. During the outflow process, the fluid pressure increases. Under the action of pressure, the liquid flows in from the water jacket inlet of the motor to cool the motor. The liquid that has absorbed the heat will flow into the heat sink. The water pipe is connected to the external water pipe. The through hole is used to allow the liquid in cavity A to enter the motor housing. When the liquid is in cavity A, the liquid will enter the motor housing through the through hole, flow into the heat sink, and gather in cavity B.

[0008] Furthermore, a hollow shaft is provided in the middle of the rotor, one end of the hollow shaft is connected to the impeller, and the other end of the hollow shaft is connected to the cavity B.

[0009] The rotor and the hollow shaft are on the same central axis, and the rotor is sleeved on the hollow shaft. A space is opened in the middle of the hollow shaft, so that during installation, one end of the hollow shaft is connected to the internal space of cavity A, and the other end of the hollow shaft is connected to cavity B. When the impeller rotates, the liquid inside the end of the hollow shaft connected to cavity A will be pulled by the impeller, and the liquid will move in the direction of the impeller, and the liquid in cavity B will be driven to move upward.

[0010] Furthermore, a plurality of heat dissipation columns are arranged on the upper surface of the heat dissipation plate, and the heat dissipation columns are used to absorb the temperature in the liquid, and the heat dissipation columns are fixedly connected to the heat dissipation plate.

[0011] The heat sink is located inside the motor housing. A space is provided on the upper surface of the heat sink, which is used to store liquid. A number of heat sinks are provided in the space, which are fixedly connected to the heat sink. The heat sinks are perpendicular to the heat sink. The heat sink is located above the circuit board. The heat sink can not only absorb heat from the liquid, but also absorb heat from the circuit board, thereby effectively reducing the impact of heat on the device.

[0012] Furthermore, a groove A is provided on the heat dissipation plate, a groove B is provided on the middle plate, groove A and groove B are on the same central axis, a connecting end is provided at the bottom end of the stator core, the connecting end passes through groove A and groove B, and the connecting end is electrically connected to the circuit board.

[0013] The groove A on the heat sink is used to allow the connection end to pass through, and the wall of the groove A extends to the bottom end of the middle plate, so that during installation, the groove A is connected with the groove B, and the groove A and the groove B form a closed space, and the closed space acts on the extension space of the connection end to electrically connect the connection end of the stator core to the circuit board.

[0014] Furthermore, an adjustment component is provided at the through hole, and the adjustment component is used to adjust the size of the water inlet. The adjustment component includes a heat absorbing plate and a cavity. A hollow cavity is opened on the inner wall of the motor shell. The heat absorbing plate is located in the hollow cavity. The heat absorbing plate is fixedly connected to the motor shell. Capacitor blocks are provided at both ends of the heat absorbing plate. The capacitor blocks are fixedly connected to the motor shell, and the capacitor blocks are electrically connected to the heat absorbing plate. The hollow block is sleeved on the water pipe, and the internal space of the hollow block is connected to the water pipe.

[0015] The adjustment component is used to adjust the aperture structure to ensure the heat dissipation capacity while minimizing the efficiency loss of the water pump. At the same time, the motor water jacket can be used as a universal component to match the heat dissipation requirements by adjusting the aperture size to reduce costs. The hollow cavity in the motor housing is located on one side of the through hole. The hollow cavity is not only used to place the heat absorbing block, but also absorbs heat to improve the heat absorption efficiency of the heat absorbing block. The capacitor block is electrically connected to the heat absorbing plate to detect the resistance value of the heat absorbing plate. When the entire device is not working, the resistance value of the heat absorbing plate is detected to be a constant value. After the heat absorbing plate absorbs heat, the atomic vibration inside the material of the heat absorbing plate intensifies, thereby increasing the scattering of electrons in the material, resulting in an increase in resistance, and the temperature in the liquid can be known based on the changed resistance value.

[0016] Furthermore, a magnetic block is provided in the cavity, a spring is provided at the top of the magnetic block, the top of the spring is fixedly connected to the inner wall of the cavity, the bottom of the spring is fixedly connected to the magnetic block, a magnetic ring is provided on the outer side of the magnetic block, the magnetic ring is fixedly connected to the inner wall of the cavity, a connecting rod is provided at the bottom of the magnetic block, a limiting block is provided at the bottom of the connecting rod, and an arc-shaped edge is provided at the bottom of the limiting block.

[0017] The magnetic block is connected to the inner wall of the cavity through a spring, and the spring is connected to the magnetic block. As a connecting piece, the spring is perpendicular to the horizontal line. The magnetic block is located in the magnetic circle and is located at the central axis of the magnetic circle. The magnetic circle is electrically connected to an external power supply. When the magnetic circle is energized, the magnetic circle will generate a magnetic force, thereby attracting the magnetic block and placing the magnetic block at the center of the magnetic circle. When the temperature absorbed by the liquid in the cooling mechanism in the device is higher, the temperature accumulated by the heat absorbing block is higher, and the resistance value in the heat absorbing block is higher. The magnetic force of the magnetic circle is adjusted according to the resistance value. When the temperature of the liquid is higher, the resistance value is higher, and the magnetic force of the magnetic circle is adjusted. The greater the force, the magnet is in the center of the magnetic circle. When the liquid temperature is close to a constant value, the resistance value is also close to a constant value, and the magnetic force of the magnetic circle is smaller. The magnet is fixedly connected to the connecting rod, and the bottom end of the connecting rod is fixedly connected to the limiting block. The magnet will move downward due to the weight of the limiting block, and the arc-shaped edge at the bottom of the limiting block will fit with the bottom end of the cavity. The limiting block fits with the bottom end of the cavity. Due to the arc-shaped edge structure, the liquid will flow into the device through the arc-shaped edge, thereby achieving the lowest efficiency loss of the water pump while ensuring the heat dissipation capacity, and reducing costs by adjusting the size of the aperture to match the heat dissipation requirements.

[0018] Furthermore, a sealing gasket is provided at the groove A, and the sealing gasket is used to prevent liquid from penetrating into the groove A.

[0019] A heat sink sealing ring is provided on the outside of the heat sink to prevent liquid from seeping out of the heat sink. A middle plate sealing ring is provided on the outside of the middle plate to prevent liquid from seeping out of the heat sink. A middle plate sealing ring is provided on the outside of the middle plate to prevent liquid from seeping out of the heat sink. A watertight sleeve sealing ring A is provided on the top of the middle plate to prevent liquid from seeping out of the middle plate and the motor housing. A watertight sleeve sealing ring A is provided on the top of the middle plate to prevent liquid from seeping out of the middle plate and the motor housing. A water pump housing sealing ring is provided on the outside of the top of the motor housing to prevent liquid from seeping out of the middle plate and the motor housing. The split water-cooled plate adopts a static sealing design for all, with high reliability.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. During the rotation of the impeller of the present invention, under the action of pressure, liquid is sucked in from the impeller inlet and flows out from the outlet. During the outflow process, the fluid pressure increases. Under the action of pressure, liquid flows in from the water jacket inlet of the motor to cool the motor, flows through the split heat sink, and then flows back to the impeller inlet from the hollow shaft of the rotor assembly to complete a heat dissipation cycle. The split water-cooled plate has a structural part and a heat dissipation part that separate all functions, so that a water circulation loop is used to simultaneously dissipate heat for both the motor and the drive plate.

[0021] 2. The present invention adopts a split structure for the driver water cooling plate, separating the structural part from the heat dissipation part. The heat dissipation part increases the heat dissipation capacity and reduces the temperature of the driver plate.

[0022] 3. In the present invention, when the liquid passes through the wall of the motor casing, the hollow cavity absorbs heat, thereby improving the heat absorption efficiency of the heat absorbing block. The resistance value of the heat absorbing plate is then detected by the capacitor block, and the magnetic force of the magnetic coil is adjusted according to the resistance value, thereby automatically adjusting the aperture structure. While ensuring the heat dissipation capacity, the efficiency loss of the water pump is minimized. The aperture size is adjusted to match the heat dissipation requirements and reduce costs.

[0023] 4. The present invention adopts a fully static sealing design with high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 An exploded view of the present invention as a whole; Figure 3 It is a structural schematic diagram of the impeller of the present invention; Figure 4 It is a structural schematic diagram of the connection end of the present invention; Figure 5 It is a structural schematic diagram of the hollow block of the present invention; Figure 6 For the present invention Figure 4 Schematic diagram of local B; Figure 7 It is a structural schematic diagram of the middle plate of the present invention; Figure 8 It is a structural schematic diagram of the heat dissipation plate of the present invention.

[0025] In the figure: 1. water pump housing; 11. water pipe; 2. housing assembly; 21. motor housing; 211. through hole; 22. stator core; 221. connection end; 23. water baffle; 24. middle plate; 241. groove B; 25. rotor; 251. hollow shaft; 26. heat sink; 261. heat dissipation glue; 262. groove A; 27. impeller; 28. heat dissipation column; 3. water pump back cover; 4. circuit board; 5. adjustment assembly; 51. heat absorbing plate; 52. hollow block; 53. capacitor block; 54. magnetic block; 55. spring; 56. magnetic ring; 57. connecting rod; 58. limiting block; 581. arc edge; 6. sealing gasket. DETAILED DESCRIPTION

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0027] Example: Figure 1 to Figure 8As shown, the present invention provides a technical solution for a fully water-cooled automotive electronic water pump containing a split water-cooling plate, the electronic water pump comprising a water pump housing 1, a motor housing 21 and a water pump back cover 3, a stator core 22 is arranged in the motor housing 21, the stator core 22 is sleeved on a water baffle 23, the water baffle 23 is sleeved on a rotor 25, the rotor 25 and the motor housing 21 are on the same central axis, a middle plate 24 is arranged at the bottom end of the inner wall of the housing, the middle plate 24 cooperates with the housing, a heat sink 26 is arranged at the bottom end of the middle plate 24, a heat sink 26 is coated with heat dissipation glue 261 at the bottom end, and a circuit board 4 is arranged at the bottom end of the heat sink 26.

[0028] Specifically, the water pump housing 1 is a top cover, the motor housing 21 is located in the housing, and the water pump rear cover 3 is a bottom cover. The three constitute the housing assembly 2 of the electronic water pump, wherein the stator core 22 is located in the motor housing 21, and a water baffle 23 is provided in the stator core 22. A water baffle 23 is provided in the middle of the stator core 22, and the water baffle 23 is connected to the motor housing 21, so that the stator core 22 is in a sealed space. The water baffle 23 is used to protect the stator core 22 from being affected by liquid. A rotor 25 is provided in the internal space of the water baffle 23, and the rotor 25 has a hollow shaft 2 The top of 51 passes through the top of the casing, and the bottom of the hollow shaft 251 of the rotor 25 passes through the middle plate 24. The middle plate 24 is located at the bottom of the casing, and the top of the casing cooperates with the inner wall of the water-blocking plate 23. The heat sink 26 is located at the bottom of the middle plate 24. The heat sink 26 is used to absorb liquid heat, thereby reducing the impact of high temperature on the internal structure. The heat dissipation glue 261 is used to assist the heat dissipation of the heat sink 26 to improve the heat dissipation efficiency. The circuit board 4 is located at the bottom of the heat dissipation glue 261 layer. The heat sink 26 structure blocks the liquid to prevent the liquid from affecting the circuit board 4.

[0029] like Figure 2~Figure 4 As shown, an impeller 27 is provided at the top of the motor housing 21, and the impeller 27 is used to convert fluid kinetic energy. The impeller 27 is rotatably connected to the motor housing 21. A cavity A is provided between the top of the motor housing 21 and the water pump housing 1, and the impeller 27 is located in the cavity A. A water pipe 11 is provided on one side of the water pump housing 1, and the water pipe 11 is connected to the cavity A. A through hole 211 is provided on the motor housing 21, and the through hole 211 is connected to the cavity A. A cavity B is provided between the heat sink 26 and the middle plate 24, and the through hole 211 is connected to the cavity B. The liquid flow process is that the liquid is sucked from the inlet of the impeller 27 and flows out from the outlet. During the outflow process, the fluid pressure increases. Under the action of pressure, the liquid flows into the water jacket inlet of the motor housing 21 to cool the motor, flows through the split heat sink 26, and there are heat sink columns 28 on the heat sink 26 to cool the drive plate. Then, it flows back to the inlet of the impeller 27 from the hollow shaft 251 of the rotor 25 assembly to complete a heat dissipation cycle.

[0030] Specifically, the impeller 27 is rotatably connected to the motor housing 21, and the impeller 27 is electrically connected to an external power supply. When the impeller 27 rotates, the liquid is stirred to flow. The liquid is sucked in from the inlet of the impeller 27 and flows out from the outlet. During the outflow process, the fluid pressure increases. Under the action of pressure, the liquid flows in from the water jacket inlet of the motor to cool the motor. The liquid that has absorbed the heat will flow into the heat sink 26. The water pipe 11 is connected to the external water pipe. The through hole 211 is used to allow the liquid in cavity A to enter the motor housing 21. When the liquid is located in cavity A, the liquid will enter the motor housing 21 through the through hole 211, flow into the heat sink 26, and gather in cavity B.

[0031] like Figure 3 , Figure 4 As shown, a hollow shaft 251 is provided in the middle of the rotor 25 , one end of the hollow shaft 251 is connected to the impeller 27 , and the other end of the hollow shaft 251 is connected to the cavity B.

[0032] Specifically, the rotor 25 and the hollow shaft 251 are on the same central axis, and the rotor 25 is sleeved on the hollow shaft 251. A space is opened in the middle of the hollow shaft 251, so that during installation, one end of the hollow shaft 251 is connected to the internal space of the cavity A, and the other end of the hollow shaft 251 is connected to the cavity B. When the impeller 27 rotates, the liquid inside the end of the hollow shaft 251 connected to the cavity A will be pulled by the impeller 27, and the liquid will move in the direction of the impeller 27, and the liquid in the cavity B will be driven to move upward.

[0033] like Figure 2~Figure 4 , Figure 8 As shown, a plurality of heat dissipation columns 28 are provided on the upper surface of the heat dissipation plate 26 . The heat dissipation columns 28 are used to absorb the temperature in the liquid. The heat dissipation columns 28 are fixedly connected to the heat dissipation plate 26 .

[0034] Specifically, the heat sink 26 is located in the motor housing 21, and a space is opened on the upper surface of the heat sink 26, and the space is used to store liquid. A plurality of heat sink columns 28 are provided in the space, and the heat sink columns 28 are fixedly connected to the heat sink 26, and the heat sink columns 28 are perpendicular to the heat sink 26. The heat sink 26 is located above the circuit board 4, and the heat sink 26 can not only absorb the heat in the liquid, but also absorb the heat in the circuit board 4, thereby effectively reducing the influence of heat on the device.

[0035] like Figure 7 , Figure 8 As shown, a groove A262 is formed on the heat sink 26, a groove B241 is formed on the middle plate 24, the groove A262 and the groove B241 are on the same central axis, a connecting end 221 is formed at the bottom end of the stator core 22, the connecting end 221 passes through the groove A262 and the groove B241, and the connecting end 221 is electrically connected to the circuit board 4.

[0036] Specifically, the groove A262 on the heat sink 26 is used to allow the connection end 221 to pass through, and the wall of the groove A262 extends to the bottom end of the middle plate 24, so that during installation, the groove A262 is connected to the groove B241, and the groove A262 and the groove B241 form a closed space, and the closed space acts on the extension space of the connection end 221, so that the connection end 221 of the stator core 22 is electrically connected to the circuit board 4.

[0037] like Figure 1 , Figure 3 , Figure 6 As shown, an adjustment component 5 is provided at the through hole 211, and the adjustment component 5 is used to adjust the size of the water inlet. The adjustment component 5 includes a heat absorbing plate 51 and a hollow block 52. A hollow cavity is opened on the inner wall of the motor housing 21, and the heat absorbing plate 51 is located in the hollow cavity. The heat absorbing plate 51 is fixedly connected to the motor housing 21. Capacitor blocks 53 are provided at both ends of the heat absorbing plate 51, and the capacitor blocks 53 are fixedly connected to the motor housing 21. The capacitor blocks 53 are electrically connected to the heat absorbing plate 51, and the hollow block 52 is sleeved on the water pipe 11, and the internal space of the hollow block 52 is connected to the water pipe 11.

[0038] Specifically, the adjustment component 5 is used to adjust the aperture structure to minimize the efficiency loss of the water pump while ensuring the heat dissipation capacity. At the same time, the motor water jacket can be used as a universal component to match the heat dissipation requirements by adjusting the aperture size to reduce costs. The hollow cavity in the motor housing 21 is located on one side of the through hole 211. The hollow cavity is not only used to place the heat absorbing block, but also absorbs heat to improve the heat absorption efficiency of the heat absorbing block. The capacitor block 53 is electrically connected to the heat absorbing plate 51 to detect the resistance value of the heat absorbing plate 51. When the entire device is not working, the resistance value of the heat absorbing plate 51 is detected to be a constant value. After the heat absorbing plate 51 absorbs heat, the atomic vibration inside the material of the heat absorbing plate 51 is intensified, thereby increasing the scattering of electrons in the material, resulting in an increase in resistance, so that the temperature in the liquid can be known based on the changed resistance value.

[0039] like Figure 5 As shown, a magnet 54 is provided in the hollow block 52, a spring 55 is provided at the top of the magnet 54, the top of the spring 55 is fixedly connected to the inner wall of the hollow block 52, the bottom of the spring 55 is fixedly connected to the magnet 54, a magnetic ring 56 is sleeved on the outer side of the magnet 54, the magnetic ring 56 is fixedly connected to the inner wall of the hollow block 52, a connecting rod 57 is provided at the bottom of the magnet 54, a limiting block 58 is provided at the bottom of the connecting rod 57, and an arc-shaped edge 581 is provided at the bottom of the limiting block 58.

[0040] Specifically, the magnetic block 54 is connected to the inner wall of the hollow block 52 through a spring 55, and the spring 55 is connected to the magnetic block 54. As a connecting piece, the spring 55 is perpendicular to the horizontal line. The magnetic block 54 is located in the magnetic circle 56 and is located at the central axis of the magnetic circle 56. The magnetic circle 56 is electrically connected to an external power supply. When the magnetic circle 56 is energized, the magnetic circle 56 will generate a magnetic force, thereby attracting the magnetic block 54, so that the magnetic block 54 is located at the center of the magnetic circle 56. When the temperature absorbed by the liquid in the cooling mechanism in the device is higher, the temperature accumulated by the heat absorbing block is higher, and the resistance value in the heat absorbing block is higher. The magnetic force of the magnetic circle 56 is adjusted according to the resistance value. When the liquid temperature is higher, the resistance value is higher, and the magnetic circle 56 The greater the magnetic force, the closer the magnet 54 is to the center of the magnetic circle 56. When the liquid temperature approaches a constant value, the resistance value also approaches a constant value, and the smaller the magnetic force of the magnetic circle 56, the magnet 54 is fixedly connected to the connecting rod 57, and the bottom end of the connecting rod 57 is fixedly connected to the limiting block 58. The magnet 54 will move downward due to the weight of the limiting block 58, and the arc-shaped edge 581 at the bottom end of the limiting block 58 will fit with the bottom end of the hollow block 52, and the limiting block 58 will fit with the bottom end of the hollow block 52. Due to the structure of the arc-shaped edge 581, the liquid will flow into the device through the arc-shaped edge 581, thereby achieving the lowest efficiency loss of the water pump while ensuring the heat dissipation capacity, and adjusting the size of the aperture to match the heat dissipation requirements to reduce costs.

[0041] like Figure 2 As shown, a sealing gasket 6 is provided at the groove A262, and the sealing gasket 6 is used to prevent liquid from penetrating into the groove A262.

[0042] Specifically, a heat sink 26 sealing ring is provided on the outside of the heat sink 26, and the heat sink 26 sealing ring prevents liquid from seeping out of the heat sink 26. A middle plate 24 sealing ring is provided on the outside of the middle plate 24, and the middle plate 24 sealing ring is located between the middle plate 24 and the motor housing 21. A watertight sleeve sealing ring A is provided on the top of the middle plate 24, and the watertight sleeve sealing ring A is located between the middle plate 24 and the watertight sleeve. A water pump housing 1 sealing ring is provided on the outside of the top of the motor housing 21, and a watertight sleeve sealing ring B is provided on the inner wall of the motor housing 21. The split water-cooled plate adopts a static sealing design for all, and has high reliability.

[0043] Working principle: The cooling process of the device is that the liquid is sucked in from the inlet of the impeller 27 and flows out from the outlet. During the outflow process, the fluid pressure increases. Under the action of pressure, the liquid flows in from the water jacket inlet of the motor housing 21 to cool the motor, flows through the split heat sink 26, and at the same time, there are heat sinks 28 on the heat sink 26 to cool the drive plate. Then, it flows back to the inlet of the impeller 27 from the hollow shaft 251 of the rotor 25 assembly to complete a heat dissipation cycle. Then, when the liquid passes through the wall of the motor housing 21, the hollow cavity absorbs heat and improves the heat absorption efficiency of the heat absorption block. The resistance value of the heat absorption plate 51 is detected by the capacitor block 53, and the magnetic force of the magnetic ring 56 is adjusted according to the size of the resistance value, thereby automatically adjusting the aperture structure. While ensuring the heat dissipation capacity, the efficiency loss of the water pump is minimized, and the size of the aperture is adjusted to match the heat dissipation requirements and reduce costs.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully water-cooled automotive electronic water pump with a split water cooling plate, characterized in that: The electronic water pump comprises a water pump housing (1), a housing assembly (2) and a water pump rear cover (3); the housing assembly (2) comprises a motor housing (21); a stator core (22) is arranged inside the motor housing (21); the stator core (22) is sleeved on a water baffle (23); the water baffle (23) is sleeved on a rotor (25); the rotor (25) and the motor housing (21) are located on the same central axis; a middle plate (24) is arranged at the bottom end of the inner wall of the housing; the middle plate (24) is matched with the housing; one end of the rotor (25) is connected to an impeller (27); the other end of the rotor (25) is connected to the middle plate (24); a heat sink (26) is arranged at the bottom end of the middle plate (24); a heat sink glue (261) is applied at the bottom end of the heat sink (26); and a circuit board (4) is arranged at the bottom end of the heat sink (26).

2. A fully water-cooled automotive electronic water pump with a split water cooling plate according to claim 1, characterized in that: An impeller (27) is provided at the top of the motor housing (21), the impeller (27) being used to convert fluid kinetic energy, the impeller (27) being rotatably connected to the motor housing (21), a cavity A being provided between the top of the motor housing (21) and the water pump housing (1), the impeller (27) being located in the cavity A, a water pipe (11) being provided at one side of the water pump housing (1), the water pipe (11) being connected to the cavity A, a through hole (211) being provided on the motor housing (21), the through hole (211) being connected to the cavity A, a cavity B being provided between the heat sink (26) and the middle plate (24), the through hole (211) being connected to the cavity B.

3. The fully water-cooled automotive electronic water pump with a split water cooling plate according to claim 2, characterized in that: A hollow shaft (251) is provided in the middle of the rotor (25); one end of the hollow shaft (251) is connected to the impeller (27), and the other end of the hollow shaft (251) is connected to the cavity B.

4. A fully water-cooled automotive electronic water pump with a split water cooling plate according to claim 3, characterized in that: A plurality of heat dissipation columns (28) are provided on the upper surface of the heat dissipation plate (26). The heat dissipation columns (28) are used to absorb the temperature in the liquid. The heat dissipation columns (28) are fixedly connected to the heat dissipation plate (26).

5. A fully water-cooled automotive electronic water pump with a split water cooling plate according to claim 4, characterized in that: The heat sink (26) is provided with a groove A (262), the middle plate (24) is provided with a groove B (241), the groove A (262) and the groove B (241) are located on the same central axis, a connecting end (221) is provided at the bottom end of the stator core (22), the connecting end (221) passes through the groove A (262) and the groove B (241), and the connecting end (221) is electrically connected to the circuit board (4).

6. A fully water-cooled automotive electronic water pump with a split water cooling plate according to claim 5, characterized in that: An adjustment component (5) is provided at the through hole (211), and the adjustment component (5) is used to adjust the size of the water inlet. The adjustment component (5) comprises a heat absorbing plate (51) and a hollow block (52). A hollow cavity is provided on the inner wall of the motor housing (21), and the heat absorbing plate (51) is located in the hollow cavity. The heat absorbing plate (51) is fixedly connected to the motor housing (21). Capacitor blocks (53) are provided at both ends of the heat absorbing plate (51), and the capacitor blocks (53) are fixedly connected to the motor housing (21). The capacitor blocks (53) are electrically connected to the heat absorbing plate (51). The hollow block (52) is located at the water pipe (11), and the hollow block (52) is sleeved on the water pipe (11). The internal space of the hollow block (52) is connected to the water pipe (11).

7. A fully water-cooled automotive electronic water pump with a split water cooling plate according to claim 6, characterized in that: A magnetic block (54) is provided inside the hollow block (52); a spring (55) is provided at the top end of the magnetic block (54); the top end of the spring (55) is fixedly connected to the inner wall of the hollow block (52); the bottom end of the spring (55) is fixedly connected to the magnetic block (54); a magnetic ring (56) is sleeved on the outer side of the magnetic block (54); the magnetic ring (56) is fixedly connected to the inner wall of the hollow block (52); a connecting rod (57) is provided at the bottom end of the magnetic block (54); a limiting block (58) is provided at the bottom end of the connecting rod (57); and an arc-shaped edge (581) is provided at the bottom end of the limiting block (58).

8. The fully water-cooled automotive electronic water pump with a split water cooling plate according to claim 7, characterized in that: A sealing gasket (6) is provided at the groove A (262), and the sealing gasket (6) is used to prevent liquid from penetrating into the groove A (262).

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