Integrated electronic water pump

Abstract

The utility model discloses an integrated electronic water pump which comprises a shell and a volute connected with the shell. The volute is provided with a sealing module which enables the integrated electronic water pump to be connected with a thermal management system integration module in a sealing mode. In the axial direction of the volute, a first circulation opening is formed in one end of the volute, and a second circulation opening communicated with the first circulation opening is formed in the side face of the volute; the water inlet and the water outlet are formed in the upper end and the side of the volute respectively, a water inlet and outlet extension section of the electronic water pump is omitted, the space needed by connection is reduced, the integration degree is improved, meanwhile, the sealing module is arranged, the sealing effect of the joint of the volute and the heat management system integration module is better, and the connection stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal pumps, and in particular relates to an integrated electronic water pump. Background Art

[0002] Electronic water pumps are widely used in the thermal management system of new energy vehicles. They are key components for transporting coolant and are generally used in air conditioning and heating systems, battery heating or cooling, motor electronic control cooling, etc. Usually, electronic water pumps are composed of key components such as housing, motor, and controller. The water pump is placed separately in the front cabin so that the water inlet and outlet are reliably connected to the system pipeline, so that the water pump can transport coolant and increase system pressure. However, with the increasing demand for intelligent and integrated new energy vehicles, it is urgent to develop an integrated electronic water pump.

[0003] In the thermal management integrated system, the integrated overflow pot, multi-way water valve, solenoid valve, and integrated electronic water pump form a thermal management integrated module to achieve high integration of key components of the thermal management integrated system. The existing electronic water pump assembly has a long water inlet and outlet extension section and cannot be assembled in the thermal management module. In addition, the existing electronic water pump assembly is designed with a separate controller and cannot achieve unified control of the thermal management system. Therefore, it is necessary to design an integrated electronic water pump actuator and set up an integrated electronic water pump that can be directly assembled in the thermal management integrated module. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated electronic water pump to solve the above-mentioned technical problems. The volute is provided with a water inlet and a water outlet at the upper end and the side respectively, so that the electronic water pump can eliminate the water inlet and outlet extension sections, reduce the space required for the connection, and improve the integration. At the same time, a sealing module is provided to improve the sealing effect of the connection between the volute and the thermal management system integrated module and improve the connection stability.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0006] An integrated electronic water pump comprises a housing, a volute connected to the housing, wherein the volute is provided with a sealing module for sealingly connecting the integrated electronic water pump with an integrated module of a thermal management system;

[0007] Along the axial direction of the volute, a first flow port is provided at one end of the volute, and a second flow port connected to the first flow port is provided on the side of the volute. The first flow port is connected to the outside and the inside of the volute, and the second flow port is connected to the outside and the inside of the volute. The first connection port and the second connection port are respectively a water inlet and a water outlet. The volute is provided with a water inlet and a water outlet at the upper end and the side, respectively, so that the electronic water pump can eliminate the water inlet and outlet extension section. At the same time, a sealing module is provided, so that the sealing effect of the connection between the volute and the thermal management system integrated module is better, and the connection stability is improved. At the same time, it is avoided to use a longer water inlet and outlet extension section to connect with the thermal management system integrated module, reduce the space required for the connection, and improve the integration.

[0008] Preferably, the sealing module includes a first sealing mechanism and a second sealing mechanism sequentially arranged along the axial direction of the volute. The first sealing mechanism and the second sealing mechanism are arranged to ensure the sealing performance of the assembly of the water pump and the thermal management system integrated module; multiple sealing mechanisms are used to seal at different levels to improve the sealing effect, and at the same time, the space required for the sealing is small, thereby improving the integration. The first flow port is arranged flush with the first sealing mechanism, and the second flow port is arranged on one side of the second sealing mechanism.

[0009] Preferably, the first sealing mechanism comprises a first cylindrical surface fixedly arranged at one end of the volute, and a first boss fixedly arranged below the first cylindrical surface; the second sealing mechanism comprises a second cylindrical surface fixedly arranged at one end of the volute and away from the first sealing mechanism, and a second boss fixedly arranged below the second cylindrical surface;

[0010] The first boss is provided as a first sealing ring for improving the sealing degree of the connection; the second boss is provided as a second sealing ring for improving the sealing degree of the connection.

[0011] With the axis of the volute as the center of the circle, the diameter of the first sealing mechanism is greater than the diameter of the second sealing mechanism. By setting the first cylindrical surface, the first boss, the first sealing ring and the second cylindrical surface, the second boss, the second sealing ring, multiple connection and contact positions, the stability of the connection and the stability of the seal are improved. By setting them in sequence in the axial direction, the space required for the connection is reduced, and it can be directly assembled to the thermal management system integrated module, thereby improving the integration degree of the integrated electronic water pump and the thermal management system integrated module. The boss and the sealing ring can ensure the sealing performance of the assembly of the water pump and the thermal management integrated module.

[0012] Preferably, the first flow opening is flush with a first cylindrical surface disposed outside the volute in a radial direction;

[0013] The second cylindrical surface is provided with a second flow opening connected to the interior of the volute. Flow channels are provided on both sides of the interior of the first flow opening, and the flow channels are provided inside the volute; wherein the first flow opening is provided at a water inlet; wherein the second flow opening is provided at a water outlet, and the water inlet and the water outlet are connected through the internal space of the volute; the flow channel is provided inside the volute, and the first flow opening is provided at one end of the volute, and the second flow opening is provided at one side of the volute, so as to avoid the need to connect a longer inlet and outlet extension section externally, and the integrated electronic water pump is directly integrated into the thermal management system integrated module after the volute is connected to the thermal management system integrated module, so as to improve the integration and reduce the space required for installation. The volute is provided with a water inlet and a water outlet at the upper end and the side, respectively, and the volute eliminates the inlet and outlet extension section, thereby reducing the volume of the integrated electronic water pump and making it more convenient to install the water pump on the thermal management system integrated module.

[0014] Preferably, the housing includes an inner housing and an outer housing arranged outside the inner housing. The inner housing, outer housing and volute are all coaxially arranged, and the outer housing is sleeved outside the inner housing and the upper end is connected to the lower end of the volute. The interior of the inner housing is connected to the interior of the volute; the space between the outer housing and the inner housing is a sealed space; the inner housing is connected to the interior of the volute, so that the medium inside the volute can flow to the interior of the inner housing, thereby cooling the rotor assembly inside the inner housing and improving operational stability. The inner housing provides space for the rotor assembly to rotate, and allows the rotor assembly to be placed in coolant, which can take away the heat from the operation of the motor.

[0015] Preferably, the outer shell is provided with a first fitting surface, a second fitting surface in conflict with one end of the first fitting surface, and a groove body provided below the second fitting surface;

[0016] The inner shell is provided with a third fitting surface at one end, a fourth fitting surface connected to one end of the third fitting surface, and an inserting block connected to the fourth fitting surface and inserted into the groove body;

[0017] The volute is internally provided with a fifth fitting surface that fits with the third fitting surface and the fourth fitting surface, and a fitting block that fits with the first fitting surface and the second fitting surface, and the lower end of the fitting block fits with the upper end of the interlocking block. The first fitting surface and the second fitting surface are arranged perpendicular to each other, and multiple contact positions are arranged by arranging multiple fitting surfaces and interlocking blocks and groove bodies to improve the connection stability between the inner shell, the outer shell and the volute. The volute and the inner shell, and the inner shell and the outer shell are assembled using ultrasonic welding technology instead of the general screw fastening mode, which can reduce the use of sealing rings and screws, reduce the product volume, simplify the assembly process, improve production efficiency, improve the sealing performance and reduce product costs. The inner shell is provided with a plane, a motor shaft and a deep hole structure to provide space for the rotational movement of the rotating rotor assembly. In addition, the inner shell and the volute form a closed cavity, and the closed cavity can store coolant to cool the rotor assembly.

[0018] Preferably, the inner shell is movably connected to the rotor assembly extending to the inside of the volute, and a receiving chamber is arranged between the inner shell and the outer shell. The receiving chamber is provided with stator assemblies and manifold assemblies which are interlocked and connected in sequence along the axial direction of the inner shell, and the manifold assembly is provided with pins which penetrate the outer shell and extend to the outside. The manifold assembly uses an insert injection molding process and is overmolded with 4 pins for connecting the motor and the controller. The stator assembly and the manifold assembly are connected by interlocking with each other to improve the connection stability of the stator assembly and the manifold assembly. At the same time, the stator assembly and the manifold assembly are arranged in the receiving chamber between the inner shell and the outer shell. The receiving chamber is in a sealed state to prevent the entry of external media and thus affect the operation stability of the stator assembly and the manifold assembly. While using the receiving chamber for isolation, since the inner shell and the outer shell are nested with each other, the space required for the arrangement is reduced, thereby reducing the assembly space of the integrated electronic water pump.

[0019] Preferably, the stator assembly comprises a first insulating cover, a stator core, and a second insulating cover which are sequentially arranged along the axial direction of the inner shell, and a limiting column is arranged at one end of the second insulating cover; the busbar assembly is provided with a limiting groove body which is mutually engaged with the limiting column;

[0020] A limit pad is provided between the upper end of the first insulating cover and the lower end of the upper edge of the inner shell. The first insulating cover is fitted with the stator core, and the second insulating cover is fitted with the stator core; the stator assembly is composed of a first insulating cover at the top, a second insulating cover at the bottom, and a stator core assembly. The split insulating cover can match cores of different heights and adapt to motor platforms of different powers. The lower insulating cover is equipped with a limit column and assembled with the busbar. The stator assembly and the busbar use a hot melt process to limit the freedom of the busbar by hot melt, and no screws are used to fix it, which simplifies the assembly steps, improves assembly efficiency and reduces product costs. A limit pad is provided, which is annular and used to limit the axial height of the stator assembly. Compared with the commonly used spring limit, it has a simple structure and lower cost.

[0021] The first insulating cover and the second insulating cover adopt a split structure to provide winding space for the motor. The second insulating cover is provided with three pins that can be resistance welded with copper wire to ensure reliable electrical connection. At the same time, the second insulating cover is provided with a plurality of limit columns composed of cylinders and bosses to ensure the assembly and fixation of the stator assembly and the busbar. The stator assembly and the busbar are fixed by hot melt.

[0022] The outer shell is provided with a connector for electrical connection with the electrical components, and the pin passes through the outer shell and is arranged inside the connector. The outer shell and the connector are integrally injection molded to avoid the use of a swing-wire connector, ensure good sealing performance, simplify the structure and improve assembly efficiency. The busbar is provided with a pin, wherein the pin is specifically a metal pin, which can connect the thermal management system controller and the water pump motor, and the motor is controlled by the controller to pump out the medium. A connector is provided at one end of the outer shell, wherein the connector is specifically a male end structure of the connector. The system controller is fixed to the outer shell of the water pump through a wiring harness and a female connector. The electrical signal is transmitted to the motor through the metal pin provided on the bus to control the start and stop of the motor. The busbar and the outer shell are designed at the water pump end to avoid the use of a wiring harness.

[0023] Preferably, a motor shaft movably connected to the rotor assembly is arranged in the inner casing, the motor shaft is coaxially arranged with the inner casing, and one end of the motor shaft extends to the interior of the volute;

[0024] A flow guide structure is disposed inside the first flow opening, an inner hole for constraining one end of the motor shaft is disposed at the lower end of the flow guide structure, and the one end of the motor shaft is partially disposed inside the inner hole;

[0025] A gasket is arranged between the rotor assembly and the volute, and the gasket is arranged in cooperation with the upper end of the motor shaft;

[0026] The motor shaft is provided with a flat portion, the gasket is provided with a gasket inner hole, and the gasket inner hole is provided with a flat portion that fits with the flat portion;

[0027] The motor shaft is connected to a bearing, which is specifically a graphite bearing. The bearings are arranged in groups. The bearings are connected to a rotor assembly including a rotor body and an impeller cover arranged above the rotor body. The rotor body is movably connected to the motor shaft through a bearing; the rotor body is coaxially arranged with the inner casing.

[0028] This application has achieved beneficial technical effects:

[0029] The utility model provides a sealing module for sealingly connecting the integrated electronic water pump and the thermal management system integrated module; along the axial direction of the volute, a first flow port is provided at one end of the volute, and a second flow port connected to the first flow port is provided at the side of the volute. The volute is provided with a water inlet and a water outlet at the upper end and the side, respectively, so that the electronic water pump eliminates the water inlet and outlet extension section, reduces the space required for the connection, and improves the integration. At the same time, a sealing module is provided, so that the sealing effect of the connection between the volute and the thermal management system integrated module is better, and the connection stability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Shown is a schematic diagram of the explosion structure of the utility model;

[0031] Figure 2 Shown is a cross-sectional structural schematic diagram of the utility model;

[0032] Figure 3 Shown is a schematic structural diagram of the volute of the utility model;

[0033] Figure 4 Shown is a schematic diagram of the layout structure of the second flow port of the utility model;

[0034] Figure 5 Shown is a schematic cross-sectional structure diagram of the volute of the utility model;

[0035] Figure 6 Shown is a schematic structural diagram of a stator assembly of the utility model;

[0036] Figure 7 Shown is a schematic structural diagram of a rotor assembly of the utility model;

[0037] Figure 8 Shown is a schematic cross-sectional structure diagram of the rotor body of the utility model;

[0038] Fig. 9 Shown is a schematic structural diagram of the gasket of the utility model.

[0039] Reference numerals

[0040] 1-volute; 13-first flow opening; 14-second flow opening; 11-first sealing mechanism; 12-second sealing mechanism; 111-first cylindrical surface; 112-first boss; 101-first sealing ring; 121-second cylindrical surface; 122-second boss; 102-second sealing ring; 2-inner shell; 3-outer shell; 31-first fitting surface; 32-second fitting surface; 33-groove; 21-third fitting surface; 22-fourth fitting surface; 23-fitting block; 15-fifth fitting surface; 16-fitting block; 202-deep hole structure Structure; 4-rotor assembly; 5-stator assembly; 6-busbar assembly; 501-first insulating cover; 503-stator core; 502-second insulating cover; 504-limiting column; 61-limiting slot; 9-limiting pad; 34-connector; 201-motor shaft; 103-flow guide structure; 105-inner hole; 7-gasket; 71-gasket inner hole; 711-flat part; 401-bearing; 404-rotor body; 403-impeller cover; 402-magnetic steel; 405-rotor core; 8-limiting gasket; 9-limiting pad; 90 mounting hole. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0042] The technical solution of the utility model is described in detail below with specific embodiments.

[0043] Reference Figure 1-9 , an integrated electronic water pump, comprising a housing, a volute 1 connected to the housing, wherein the volute 1 is provided with a sealing module for sealingly connecting the integrated electronic water pump with an integrated module of a thermal management system;

[0044] Along the axial direction of the volute 1, a first flow port 13 is provided at one end of the volute 1, and a second flow port 14 connected to the first flow port 13 is provided on the side of the volute 1. The first flow port 13 is connected to the outside and the inside of the volute 1, and the second flow port 14 is connected to the outside and the inside of the volute 1. The first communication port 13 and the second communication port 14 are respectively a water inlet and a water outlet. The volute 1 is provided with a water inlet and a water outlet at the upper end and the side, respectively, so that the electronic water pump can eliminate the water inlet and outlet extension section, and a sealing module is provided at the same time, so that the sealing effect of the connection between the volute and the thermal management system integrated module is better, and the connection stability is improved. At the same time, it is avoided to use a longer water inlet and outlet extension section to connect with the thermal management system integrated module, reduce the space required for the connection, and improve the integration.

[0045] The sealing module includes a first sealing mechanism 11 and a second sealing mechanism 12 which are sequentially arranged along the axial direction of the volute 1. The first sealing mechanism 11 and the second sealing mechanism 12 are arranged to ensure the sealing performance of the assembly of the water pump and the thermal management system integrated module; multiple sealing mechanisms are used to seal at different levels to improve the sealing effect, and at the same time, the space required for the sealing is small, thereby improving the integration. The first flow port 13 is arranged flush with the first sealing mechanism 11, and the second flow port 14 is arranged on one side of the second sealing mechanism 12.

[0046] The first sealing mechanism 11 includes a first cylindrical surface 111 fixedly disposed at one end of the volute 1, and a first boss 112 fixedly disposed below the first cylindrical surface 111; the second sealing mechanism 12 includes a second cylindrical surface 121 fixedly disposed at one end of the volute 1 and away from the first sealing mechanism 11, and a second boss 122 fixedly disposed below the second cylindrical surface 121;

[0047] The first boss 112 is configured to improve the connection sealing degree of the first sealing ring 101; the second boss 122 is configured to improve the connection sealing degree of the second sealing ring 102.

[0048] With the axis of the volute 1 as the center of the circle, the diameter of the first sealing mechanism 11 is greater than the diameter of the second sealing mechanism 12. By setting the first cylindrical surface 111, the first boss 112, the first sealing ring 101 and the second cylindrical surface 121, the second boss 122, and the second sealing ring 102, multiple connection and contact positions are provided to improve the stability of the connection and the stability of the seal. By setting them in sequence in the axial direction, the space required for the connection is reduced, and they can be directly assembled to the thermal management system integrated module, thereby improving the integration degree of the integrated electronic water pump and the thermal management system integrated module. The boss and the sealing ring can ensure the sealing performance of the assembly of the water pump and the thermal management integrated module.

[0049] The first flow opening 13 is flush with a first cylindrical surface 111 disposed outside the volute 1 in the radial direction;

[0050] The second cylindrical surface 121 is provided with a second flow port 14 communicating with the interior of the volute 1. The first flow port 13 and the second flow port 14 respectively correspond to the water inlet and outlet extension sections integrated in the thermal management system module, and flow channels are provided on both sides of the interior of the first flow port 13, and the flow channels are provided inside the volute; the location where the first flow port 13 is provided is a water inlet; the location where the second flow port 14 is provided is a water outlet, and the water inlet and the water outlet are connected through the internal space of the volute 1; the flow channel is provided inside the volute 1, and the first flow port 13 is provided at one end of the volute 1, and the second flow port 14 is provided at one side of the volute 1, so as to avoid the need to connect a longer water inlet and outlet extension section externally, and the integrated electronic water pump is directly integrated and provided in the thermal management system integrated module after the volute 1 is connected to the thermal management system integrated module, so as to improve the integration and reduce the space required for installation. The volute 1 is provided with a water inlet and a water outlet at the upper end and the side respectively. The volute 1 eliminates the water inlet and outlet extension sections, reduces the volume of the integrated electronic water pump, and makes it more convenient to install the water pump on the thermal management system integrated module.

[0051] The housing includes an inner housing 2 and an outer housing 3 arranged outside the inner housing 2. The inner housing 2, outer housing 3 and volute 1 are all coaxially arranged, and the outer housing 3 is sleeved outside the inner housing 2 and the upper end is connected to the lower end of the volute 1. The interior of the inner housing 2 is connected to the interior of the volute 1; the space between the outer housing 3 and the inner housing 2 is a sealed space; the inner housing 2 is connected to the interior of the volute 1, so that the medium inside the volute 1 can flow to the interior of the inner housing 2, thereby cooling the rotor assembly inside the inner housing 2 and improving the operation stability. The inner housing 2 provides space for the rotor assembly to rotate and allows the rotor assembly to be in the coolant, which can take away the heat from the operation of the motor.

[0052] The outer shell 3 is provided with a first bonding surface 31, a second bonding surface 32 which conflicts with one end of the first bonding surface 31, and a groove body 33 provided below the second bonding surface 32;

[0053] The inner shell 2 is provided with a third fitting surface 21 at one end, a fourth fitting surface 22 connected to one end of the third fitting surface 21, and an inserting block 23 connected to the fourth fitting surface 22 and inserted into the groove 33;

[0054] The volute 1 is provided with a fifth fitting surface 15 fitted with the third fitting surface 21 and the fourth fitting surface 22, and a fitting block 16 fitted with the first fitting surface 31 and the second fitting surface 32, wherein the fifth fitting surface 15 is in an "L" shape, and the fifth fitting surface 15 is specifically composed of two surfaces fitted with the third fitting surface 21 and the fourth fitting surface 22 respectively; the lower end of the fitting block 16 is fitted with the upper end of the interlocking block 23. The first fitting surface 31 and the second fitting surface 32 are arranged perpendicular to each other, and multiple contact positions are arranged by setting multiple fitting surfaces and the interlocking block 23 and the groove body to improve the connection stability between the inner shell 2, the outer shell 3 and the volute 1. The volute 1 and the inner shell 2, and the inner shell 2 and the outer shell 3 are assembled using ultrasonic welding technology instead of the general screw fastening mode, which can reduce the use of sealing rings and screws, reduce product volume, simplify the assembly process, improve production efficiency, improve sealing performance and reduce product costs. The inner shell 2 is provided with a plane, a motor shaft and a deep hole structure 202, which provides space for the rotational movement of the rotating rotor assembly. In addition, the inner shell 2 and the volute 1 form a closed cavity, which stores coolant to cool the rotor assembly.

[0055] The inner shell 2 is movably connected to the rotor assembly 4 extending into the volute 1. A receiving chamber is provided between the inner shell 2 and the outer shell 3. The receiving chamber is provided with a stator assembly 5 and a manifold assembly 6 which are mutually interlocked and connected in sequence along the axial direction of the inner shell 2. The manifold assembly 6 is provided with pins which penetrate the outer shell 3 and extend to the outside. There are multiple pins. In one embodiment, there are four pins. The manifold assembly 6 uses an insert injection molding process to overmold four pins for connecting the motor and the controller. The stator assembly 5 and the manifold assembly 6 are connected by mutual interlocking to improve the connection stability of the stator assembly 5 and the manifold assembly 6. At the same time, the stator assembly 5 and the manifold assembly 6 are provided in the receiving chamber between the inner shell 2 and the outer shell 3. The receiving chamber is in a sealed state to prevent the entry of external media and thus affect the operation stability of the stator assembly 5 and the manifold assembly 6. While using the receiving chamber for isolation, since the inner shell 2 and the outer shell 3 are mutually nested, the space required for the arrangement is reduced, thereby reducing the assembly space of the integrated electronic water pump.

[0056] The stator assembly 5 comprises a first insulating cover 501, a stator core 503, and a second insulating cover 502 which are sequentially arranged along the axial direction of the inner shell 2, and a limiting column 504 is arranged at one end of the second insulating cover 502; the busbar assembly 6 is provided with a limiting groove 61 which is mutually engaged with the limiting column 504;

[0057] A limit pad 9 is provided between the upper end of the first insulating cover 501 and the lower end of the upper edge of the inner shell 2. The first insulating cover 501 is fitted with the stator core 503, and the second insulating cover 502 is fitted with the stator core 503; the stator assembly 5 is composed of the first insulating cover 501 at the top, the second insulating cover 502 at the bottom and the stator core 503. The split insulating cover can match the cores of different heights and adapt to motor platforms of different powers. The lower insulating cover is equipped with a limit column to assemble with the busbar. The stator assembly and the busbar use a hot melt process to limit the freedom of the busbar by hot melt, and no screws are used to fix it, which simplifies the assembly steps, improves assembly efficiency and reduces product costs. A limit pad 9 is provided, which is annular and used to limit the axial height of the stator assembly 5. Compared with the commonly used spring limit, it has a simple structure and lower cost.

[0058] The first insulating cover 501 and the second insulating cover 502 adopt a split structure to provide winding space for the motor. The second insulating cover 502 is provided with three pins that can be resistance welded with copper wire to ensure reliable electrical connection. At the same time, the second insulating cover 502 is provided with a plurality of limit columns composed of cylinders and bosses to ensure the assembly and fixation of the stator assembly 5 and the busbar. The stator assembly 5 and the busbar are fixed by hot melt.

[0059] The outer shell 3 is provided with a connector 34, and the pin passes through the outer shell 3 and is arranged inside the connector 34. The outer shell 3 and the connector 34 are integrally injection molded to avoid the use of a swing-wire connector, ensure good sealing performance, simplify the structure and improve assembly efficiency. The busbar is provided with a pin, wherein the pin is specifically a metal pin, which can connect the thermal management system controller and the water pump motor, and the motor is controlled by the controller to pump out the medium. A connector 34 is provided at one end of the outer shell 3, wherein the connector is specifically a male end structure of the connector. The system controller is fixed to the outer shell of the water pump through a wiring harness and a female end connector. The electrical signal is transmitted to the motor through the metal pin provided on the bus to control the start and stop of the motor. The busbar and the outer shell are designed at the water pump end to avoid the use of a wiring harness.

[0060] A motor shaft 201 movably connected to the rotor assembly 4 is disposed in the inner housing 2. The motor shaft 201 is coaxially disposed with the inner housing 2, and one end of the motor shaft 201 extends into the interior of the volute 1.

[0061] A flow guide structure 103 is disposed inside the first flow opening 13, and an inner hole 105 is disposed at the lower end of the flow guide structure 103 to constrain one end of the motor shaft 201, and one end of the motor shaft 201 is partially disposed inside the inner hole 105; the other end of the motor shaft 201 is fixedly connected to the inner housing 2, wherein the inner housing 2 is provided with a mounting hole 90 that is matched and connected with the motor shaft 201, wherein the limiting gasket 8 is disposed above the mounting hole 90;

[0062] A gasket 7 is arranged between the rotor assembly 4 and the volute 1, and the gasket 7 is arranged in cooperation with the upper end of the motor shaft 201;

[0063] The motor shaft 201 is provided with a flat portion, the gasket 7 is provided with a gasket inner hole 71, and the gasket inner hole 71 is provided with a flat portion 711 that fits with the flat portion;

[0064] The motor shaft 201 is connected to the bearing 401 , the bearings 401 are arranged in groups, and the bearings 401 are connected to the rotor assembly 4 ; the rotor assembly 4 includes a rotor body 404 and an impeller cover 403 arranged above the rotor body 404 ; the rotor body 404 is coaxially arranged with the inner casing 2 .

[0065] A gasket 7 is installed between the volute and the rotor assembly, wherein the gasket 7 is specifically a ceramic gasket. The ceramic gasket is selected to make the electronic water pump run with less noise due to its excellent wear resistance and smooth surface. The inner hole of the ceramic gasket is provided with a flat structure, which cooperates with the flat structure of the motor shaft to ensure that the ceramic gasket does not rotate with the rotor assembly when the rotor assembly is rotating. This design can reduce the working noise of the product, reduce the wear of the ceramic gasket, and increase the product life.

[0066] The rotor assembly 4 is provided with an impeller cover 403 and a rotor body 404, which are connected by ultrasonic welding. The rotor assembly 4 uses two bearings 401, and the rotor body 404 is movably connected to the motor shaft 201 through the bearings 401, wherein the bearings 401 are specifically graphite bearings, which have a longer product life, less friction with the motor shaft, lower noise, and smaller amplitude than plastic bearings.

[0067] The rotor body 404 is provided with a rotor core 405 and a surface-mounted magnet 402 arranged on the surface of the rotor core 405, wherein the outer ring of the rotor core is provided with a surface-mounted magnet 402, and the magnet is made of neodymium iron boron material. Compared with the commonly used ferrite rotor components, the energy density is higher. Compared with the embedded magnet, the motor output torque is higher and the motor efficiency is significantly improved.

[0068] A limiting pad 9 is provided between the upper end of the stator assembly 5 and the lower end of the upper edge of the inner shell 2, specifically, a limiting pad 9 is provided between the upper end of the first insulating cover 501 and the lower end of the upper edge of the inner shell 2;

[0069] The outer edge of the outer shell 3 is provided with a plurality of connection holes connected to the thermal management system integrated module, so as to improve the stability of the connection between the integrated electronic water pump and the thermal management system integrated module;

[0070] A limiting gasket 8 for limiting the rotor body is arranged below the motor shaft 201 , and the limiting gasket 8 is a metal gasket; a ceramic gasket is used between the volute 1 and the rotor assembly 4 , and a metal gasket is used between the rotor and the inner casing 2 .

[0071] The utility model provides an integrated electronic water pump, which improves the integration level of thermal management system components and reduces system costs;

[0072] The electronic water pump actuator eliminates the water inlet and outlet extension sections, integrates the water inlet and outlet extension sections into the thermal management module, and eliminates the separate controller. The thermal management system controller has unified control, thereby achieving a higher degree of system integration and reducing costs.

[0073] The utility model has the following technical effects:

[0074] 1. The integrated electronic water pump eliminates the water inlet and outlet extension sections and integrates them into the thermal management module. It eliminates the separate controller for the electronic water pump and retains the motor power-on interface to ensure unified power-on control of the thermal management system controller. This ultimately achieves the integration of the product and the thermal management system integrated module, improves the system integration level, and reduces the system controller cost.

[0075] 2. The integrated electronic water pump, the gasket 7 is made of ceramic material, and the smooth surface and wear-resistant properties of ceramic are utilized to effectively reduce the noise and vibration of the water pump rotor assembly 4 during rotation, thereby increasing the overall life of the electronic water pump.

[0076] 3. The integrated electronic water pump rotor assembly 4 uses graphite bearings to improve the wear resistance of the rotor, thereby increasing the life of the water pump. At the same time, the rotor magnet adopts a surface-mount process to increase the motor output torque, effectively improve the motor efficiency, and thereby improve the water pump pressure and flow performance.

[0077] 4. The integrated electronic water pump stator assembly 5 is assembled in the outer shell 3, and the limit pad 9 is used to limit the axial height of the stator assembly 5. The stator assembly 5 and the manifold are assembled and fixed using a hot melt welding process to ensure the relative position of the stator assembly 5 and the manifold, simplify the assembly process, improve assembly efficiency, and reduce product costs.

[0078] This technical solution is applicable to the thermal management system of new energy vehicles. It is integrated into the thermal management integrated module to provide power for the vehicle coolant. It can be used for air conditioning and heating systems, battery thermal management systems, engine cooling systems, motor electronic control cooling systems, etc.

[0079] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0081] The above is a detailed description of an embodiment of an integrated electronic water pump provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An integrated electronic water pump, comprising a housing and a volute (1) connected to the housing, characterized in that: The volute (1) is provided with a sealing module which seals the integrated electronic water pump and the thermal management system integrated module; Along the axial direction of the volute (1), a first flow opening (13) is provided at one end of the volute (1), and a second flow opening (14) communicating with the first flow opening (13) is provided on the side of the volute (1).

2. The integrated electronic water pump according to claim 1, characterized in that: The sealing module comprises a first sealing mechanism (11) and a second sealing mechanism (12) which are arranged in sequence along the axial direction of the volute (1).

3. The integrated electronic water pump according to claim 2, characterized in that: The first sealing mechanism (11) comprises a first cylindrical surface (111) fixedly arranged at one end of the volute (1), and a first boss (112) fixedly arranged below the first cylindrical surface (111); the second sealing mechanism (12) comprises a second cylindrical surface (121) fixedly arranged at one end of the volute (1) and arranged away from the first sealing mechanism (11), and a second boss (122) fixedly arranged below the second cylindrical surface (121); The first boss (112) is provided as a first sealing ring (101) for improving the connection sealing degree; and the second boss (122) is provided as a second sealing ring (102) for improving the connection sealing degree.

4. The integrated electronic water pump according to claim 3, characterized in that: The first flow opening (13) is flush with a first cylindrical surface (111) arranged outside the volute (1) in the radial direction; The second cylindrical surface (121) is provided with a second flow port (14) communicating with the interior of the volute (1).

5. The integrated electronic water pump according to claim 1, characterized in that: The shell comprises an inner shell (2) and an outer shell (3) arranged outside the inner shell (2).

6. The integrated electronic water pump according to claim 5, characterized in that: The outer shell (3) is provided with a first bonding surface (31), a second bonding surface (32) which abuts against one end of the first bonding surface (31), and a groove (33) arranged below the second bonding surface (32); The inner shell (2) is provided with a third fitting surface (21) at one end, a fourth fitting surface (22) connected to one end of the third fitting surface (21), and an inserting block (23) connected to the fourth fitting surface (22) and inserted into the groove (33); The volute (1) is provided with a fifth fitting surface (15) fitting with the third fitting surface (21) and the fourth fitting surface (22), and a fitting block (16) fitting with the first fitting surface (31) and the second fitting surface (32), and the lower end of the fitting block (16) fits with the upper end of the interlocking block (23).

7. The integrated electronic water pump according to claim 5, characterized in that: The inner shell (2) is movably connected to a rotor assembly (4) extending to the inside of the volute (1); a receiving chamber is provided between the inner shell (2) and the outer shell (3); a stator assembly (5) and a manifold assembly (6) which are interlocked and connected are provided in sequence in the accommodating chamber along the axial direction of the inner shell (2); the manifold assembly (6) is provided with a pin which passes through the outer shell (3) and extends to the outside.

8. The integrated electronic water pump according to claim 7, characterized in that: The stator assembly (5) comprises a first insulating cover (501), a stator core (503), and a second insulating cover (502) which are sequentially arranged along the axial direction of the inner shell (2); a limiting column (504) is arranged at one end of the second insulating cover (502); the busbar assembly (6) is provided with a limiting groove body (61) which is mutually engaged and connected with the limiting column (504); A limiting pad (9) is provided between the upper end of the first insulating cover (501) and the lower end of the upper edge of the inner shell (2).

9. The integrated electronic water pump according to claim 7, characterized in that: The outer shell (3) is provided with a plug connector (34), and the plug pin passes through the outer shell (3) and is arranged inside the plug connector (34).

10. The integrated electronic water pump according to claim 7, characterized in that: A motor shaft (201) movably connected to the rotor assembly (4) is disposed in the inner housing (2); the motor shaft (201) is coaxially disposed with the inner housing (2); one end of the motor shaft (201) extends into the interior of the volute (1); A flow guide structure (103) is arranged inside the first flow opening (13); an inner hole (105) for constraining one end of the motor shaft (201) is arranged at the lower end of the flow guide structure (103); and one end of the motor shaft (201) is partially arranged inside the inner hole (105); A gasket (7) is arranged between the rotor assembly (4) and the volute (1), and the gasket (7) is arranged in cooperation with the upper end of the motor shaft (201); The motor shaft (201) is provided with a flat portion, the gasket (7) is provided with a gasket inner hole (71), and the gasket inner hole (71) is provided with a flat portion (711) that fits the flat portion; The motor shaft (201) is connected to a bearing (401), the bearings (401) are arranged in groups, and the bearings (401) are connected to a rotor assembly (4); the rotor assembly (4) comprises a rotor body (404) and an impeller upper cover (403) arranged above the rotor body (404); the rotor body (404) is coaxially arranged with the inner casing (2).

Images