A double-pump-head water pump and vehicle

Abstract

The utility model relates to a kind of double pump head water pump and vehicle, including impeller, motor assembly, pivot and shell, cavity is provided in shell, impeller, motor assembly and pivot are all set in cavity, impeller has two, motor assembly is set between two impellers, pivot penetrates impeller and motor assembly;Motor assembly includes the stator made of printed circuit board.This water pump connects motor assembly between two impellers, two impellers share a motor assembly, reduce the volume of water pump, and motor uses the stator made of printed circuit board, printed circuit board stator uses lightweight material and by printed circuit technology copper wire is directly printed on circuit board, with the characteristics of low cost, small size, light weight, so relative to traditional motor can reduce water pump volume and weight, reduce cost.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicles, and in particular to a dual-head water pump and vehicle. Background Technology

[0002] In automotive thermal management systems, water pumps pressurize the coolant, causing it to circulate and transfer heat. During vehicle operation, both the electric drive system and the battery generate a large amount of heat. To dissipate heat from both the electric drive system and the battery simultaneously, a dual-pump-head water pump is used, with two pump heads dissipating heat from the electric drive system and the battery respectively.

[0003] Existing dual-head water pumps use a copper wire wound stator motor located between the two pump heads. The copper wire wound stator has a large volume and weight, and is also expensive. In order to reduce costs and meet the requirements of water pump installation and vehicle lightweighting, it is necessary to reduce the volume and weight of the water pump. Utility Model Content

[0004] To address the technical problems of high cost, large size, and heavy weight of dual-head water pump motors, this utility model provides a dual-head water pump and vehicle.

[0005] To achieve the above objectives, this utility model provides a dual-head water pump, including an impeller, a motor assembly, a rotating shaft, and a housing. A cavity is provided inside the housing, and the impeller, the motor assembly, and the rotating shaft are all disposed in the cavity. There are two impellers, and the motor assembly is disposed between the two impellers. The rotating shaft passes through the impellers and the motor assembly. The motor assembly includes a stator made of a printed circuit board.

[0006] Furthermore, the motor assembly also includes two rotors, which are respectively disposed between the stator and the two impellers.

[0007] Furthermore, the rotor includes a magnetic conductor and magnets, the magnets being arranged circumferentially on the end face of the magnetic conductor near the stator, and the magnetic conductor being connected to the impeller.

[0008] Furthermore, the impeller includes a fixed groove and a groove wall, the radial inner end of the magnetic conductor is disposed in the fixed groove, the groove wall is disposed on the side of the fixed groove near the stator, and there is a gap between the groove wall and the magnet in the radial direction.

[0009] Furthermore, the housing has an inlet and an outlet at both ends along the axial direction that communicate with the cavity. A first flow channel communicating with the inlet is provided between the housing and the impeller. A second flow channel is provided between the stator and the rotor. The second flow channel is connected to the first flow channel and the outlet.

[0010] Furthermore, the dual-head water pump also includes a retaining ring, which is disposed in the first flow channel and located between the outer radial end of the housing and the impeller. The retaining ring abuts against the inner radial wall of the housing and has a gap between it and the outer radial end of the impeller.

[0011] Furthermore, a third flow channel is provided radially between the rotating shaft and the impeller, and the third flow channel connects the second flow channel and the outlet.

[0012] Furthermore, the dual-head water pump also includes a rotating shaft connection part, which is disposed at both ends of the rotating shaft along the axial direction. The rotating shaft connection part includes a first connection part and a second connection part connected together. The first connection part is connected to the water inlet, and the second connection part is connected to the rotating shaft. The center line of the water inlet and the axis of the rotating shaft are located on the same straight line.

[0013] Furthermore, the housing includes a first housing and a second housing, and a groove is provided at the connection between the first housing and the second housing. The groove communicates with the cavity, and one end of the stator extends radially into the groove.

[0014] Another objective of this embodiment is to provide a vehicle equipped with the aforementioned dual-head water pump or chassis.

[0015] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0016] (1) The pump shaft runs through the motor assembly and the two impellers, and connects the motor assembly between the two impellers. Therefore, the two impellers share one motor assembly, which reduces the volume of the pump. In electronic pumps, the cost is mainly concentrated on the stator and rotor of the pump motor. The stator of this motor assembly is made of printed circuit board. The printed circuit board stator is made of lightweight material and copper wires are directly printed on the circuit board through printed circuit technology. It has the characteristics of low cost, small size and light weight. Therefore, compared with traditional motors, it can reduce the volume and weight of the pump and reduce the cost.

[0017] (2) The stator is set between the two impellers, and the two rotors are set between the stator and the two impellers respectively. The two rotors and the two impellers are symmetrically arranged along the stator, so that the weight distribution of the pump circumference is uniform. Therefore, the forces generated by the two pump heads at both ends of the shaft can cancel each other out, thereby reducing vibration and noise.

[0018] (3) The pump motor assembly is located between two impellers, and inlet and outlet are provided on the housing on both sides of the axis. A first flow channel is formed between the housing and the impeller, a second flow channel is formed between the stator and the rotor, and a third flow channel is formed between the shaft and the impeller. The coolant enters from the inlet, flows through the first, second and third flow channels and is discharged from the outlet. Therefore, the coolant can enter the motor and immerse the motor in the coolant, which can better dissipate heat and ensure the stability of the motor performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top view of the dual-pump head water pump of this utility model;

[0021] Figure 2 This is a cross-sectional view of the dual-head water pump of this utility model, showing the SS section line.

[0022] Figure 3 This is a cross-sectional view of the dual-head water pump of this utility model, showing the DD section line.

[0023] Figure 4 This is a schematic diagram of the flow channel of the dual-head water pump of this utility model;

[0024] Figure 5 This is an exploded view of the dual-pump head water pump of this utility model.

[0025] Explanation of reference numerals in the accompanying drawings: Impeller - 1; Fixed groove - 110; Groove wall - 120; Motor assembly - 2; Stator - 210; Rotor - 220; Magnet - 221; Magnetic conductor - 222; Second flow channel - 230; Shaft - 3; Housing - 4; Cavity - 410; First housing - 420; Groove - 421; Second housing - 430; Inlet - 5; Outlet - 6; First flow channel - 7; Baffle ring - 8; Third flow channel - 9; Shaft connection - 10; First connection - 101; Second connection - 102; Bearing - 11. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, deviating from the general scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0030] Furthermore, in the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this utility model should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] Example 1

[0033] Reference Figures 1-5 This utility model provides a dual-head water pump, including an impeller 1, a motor assembly 2, a rotating shaft 3, and a housing 4. A cavity 410 is provided inside the housing 4, and the impeller 1, motor assembly 2, and rotating shaft 3 are all disposed within the cavity 410. There are two impellers 1, and the motor assembly 2 is disposed between the two impellers 1. The rotating shaft 3 passes through the impellers 1 and the motor assembly 2. In this embodiment, the two impellers 1 are positioned opposite each other at the two ends of the rotating shaft 3 along its axial direction. The rotating shaft 3 passes through the motor assembly 2, and the motor assembly 2 is disposed between the two impellers 1 and drives the two impellers 1 to rotate together. Furthermore, both impellers 1 are... The motor assembly 2 is connected, and the two impellers 1 share one motor assembly 2, which can reduce the size and weight of the water pump. Furthermore, the motor assembly 2 includes a stator 210 made of printed circuit board. The printed circuit board stator is made of lightweight material, and the copper wire support is printed on the circuit board through printed circuit technology, which can fully compress the copper coil, thereby reducing the amount of copper wire used. Compared with the traditional copper wire wound stator, it has a smaller weight and volume, and the required cost is lower, thereby achieving the technical effect of reducing the weight, volume and cost of the water pump, and making the water pump easier to manufacture and install.

[0034] In one embodiment, the housing 4 is provided with an extension at one radial end, and a power supply component is provided in the extension. The stator 210 extends at one radial end and is electrically connected to the power supply component to enable the stator 210 to be energized. Furthermore, the stator 210 extends into the extension of the housing 4, which can also achieve a limiting effect on the stator 210.

[0035] In one embodiment, refer to Figure 2 and Figure 3 The motor assembly 2 also includes two rotors 220, which are respectively disposed between the stator 210 and the two impellers 1. In this embodiment, the rotors 220 are connected to the impellers 1 and have an air gap with the stator 210. A rotating magnetic field is generated between the stator 210 and the rotors 220, and the rotors 220 drive the impellers 1 to rotate. Since there are two rotors 220 respectively disposed on both sides of the stator 210 along the axial direction, the impellers 1 located on both sides of the stator 210 along the axial direction can be driven to rotate by the rotors 220, thus realizing a dual pump head. By sharing a single motor, the size of the water pump is reduced. An air gap exists between the rotor 220 and the stator 210 to prevent friction between the stator and rotor. Furthermore, two impellers 1 are located at both ends of the stator 210 along the axial direction, and two rotors 220 are respectively located between the stator 210 and the two impellers 1. Therefore, the two impellers 1 and the two rotors 220 are symmetrically arranged along the stator 210, so that the reaction forces generated by the dual pump heads on both sides of the stator 210 along the axial direction cancel each other out, which can reduce vibration, reduce noise, and improve energy efficiency.

[0036] In one embodiment, refer to Figure 2The rotor 220 includes magnets 221 and magnetic conductors 222. Magnets 221 are spaced apart circumferentially on the end face of the magnetic conductors 222 near the stator 210. The magnetic conductors 222 are connected to the impeller 1. In this embodiment, magnets 221 are permanent magnets to generate a constant magnetic flux. Magnets 221 are disposed between the magnetic conductors 222 and the stator 210, and are disposed on the end face of the magnetic conductors 222 near the stator 210. Multiple magnets 221 are disposed, and multiple magnets 221 are spaced apart circumferentially on the end face of the magnetic conductors 222, which can make the magnetic field of the motor uniformly distributed and improve the output efficiency of the motor.

[0037] In one embodiment, refer to Figure 2 The impeller 1 includes a fixed groove 110 and a groove wall 120. The radial inner end of the magnetic conductor 222 is disposed in the fixed groove 110, and the groove wall 120 is disposed on the side of the fixed groove 110 near the stator 210. There is a gap between the groove wall 120 and the magnet 221 in the radial direction. In the embodiment, the fixed groove 110 extends axially towards the stator 210, and the radial inner end of the magnetic conductor 222 is disposed in the fixed groove 110. The axial distance between the inner walls of the fixed groove 110 is adapted to the axial distance between the outer walls of the magnetic conductor 222. The groove wall 120 is disposed on the side of the fixed groove 110 near the stator 210. There is a gap between the groove wall 120 and the magnet 221 in the radial direction. Therefore, there is a gap between the magnet 221 and the impeller 1, which avoids direct contact between the impeller 1 and the magnet 221 and reduces wear between the impeller 1 and the magnet 221.

[0038] In one embodiment, refer to Figure 3 and Figure 4The housing 4 has inlet 5 and outlet 6 at both ends of the stator 210 along the axial direction, which are connected to the cavity 410. The inlet 5 is located at both ends of the housing 4 along the axial direction, and the outlet 6 is located on the radial sidewalls of the first housing 420 and the second housing 430. In this embodiment, the opening of the inlet 5 extends axially, and the opening of the outlet 6 extends radially to facilitate water inflow and outflow. A first flow channel 7 connecting the housing 4 and the impeller 1 to the inlet 5 is provided, and a second flow channel 230 connecting the stator 210 and the rotor 220 is provided. The second flow channel 230, the first flow channel 7, and the outlet 6 are connected. The first flow channel 7 is located in the cavity 410, and the axial gap between the impeller 1 and the housing 4 is... The gap between the outer end of the impeller 1 and the housing 4 in the radial direction is the first flow channel 7. The first flow channel 7 connects the inlet 5 and the second flow channel 230. The second flow channel 230 can be the air gap between the stator 210 and the rotor 220, or it can be a channel set between the stator 210 and the rotor 220. There is no limitation here. In the embodiment, the first flow channel 7 is provided on both sides of the stator 210 along the axial direction. The coolant enters the first flow channel 7 from the inlet 5 located at both ends of the housing 4 in the axial direction, flows into the second flow channel 230 between the stator 210 and the rotor 220, and is discharged through the outlet 6. This realizes the introduction of coolant into the motor, so that the motor is immersed in coolant, optimizes the cooling effect of the motor, and ensures stable performance.

[0039] In one embodiment, refer to Figure 3 The dual-head water pump also includes a retaining ring 8, which is disposed in the first flow channel 7 and located between the outer radial ends of the housing 4 and the impeller 1. The retaining ring 8 abuts against the inner radial wall of the housing 4 and has a gap between it and the outer radial end of the impeller 1. In the embodiment, the retaining ring 8 is a water-blocking ring, but it can also be configured as a sealing ring, a sealing gasket, or a sealing packing. There are no restrictions on this. It can prevent the coolant from flowing back. By placing the retaining ring 8 in the first flow channel 7, the coolant is prevented from generating eddies in the first flow channel 7, which would cause wear to the impeller. Furthermore, the gap between the retaining ring 8 and the outer radial end of the impeller 1 also ensures that the coolant flows through the gap in the first flow channel 7 and flows into the second flow channel 230 to dissipate heat from the motor.

[0040] In one embodiment, refer to Figure 4A third flow channel 9 is radially provided between the rotating shaft 3 and the impeller 1. The third flow channel 9 connects the second flow channel 230 and the outlet 6. In this embodiment, the dual-pump head water pump also includes a rotating shaft connecting part 10 and a bearing 11. The rotating shaft connecting part 10 is connected to the housing 4 and is located at both ends of the rotating shaft 3 along the axial direction. The bearing 11 is located at the middle of the rotating shaft 3 along the axial direction. There are two bearings 11, and each bearing 11 is connected to one impeller 1. A first gap is provided between the two bearings 11. The inner wall of the bearing 11 is separated from the outer wall of the rotating shaft 3. A second gap is provided, and a third gap is provided between the bearing 11 and the shaft connection 10. The first gap, the second gap, and the third gap together constitute the third flow channel 9. The second flow channel 230 and the third flow channel 9 are connected to the outlet 6. After the coolant flows into the second flow channel 230 from the first flow channel 7, it flows through the third gap 9 in sequence to further expand the cooling range. The third gap 9 is connected to the outlet 6 to realize the discharge of coolant, thereby ensuring that the coolant can be smoothly discharged after flowing into the motor and further improving the cooling effect.

[0041] In one embodiment, refer to Figure 3 and Figure 4 The dual-head water pump also includes a shaft connecting part 10, which is disposed at both ends of the rotating shaft 3 along the axial direction. The shaft connecting part 10 connects the rotating shaft 3 and limits its movement. The shaft connecting part 10 includes a first connecting part 101 and a second connecting part 102 connected together. The end of the first connecting part 101 is connected to the water inlet 5, and the second connecting part 102 is connected to the rotating shaft 3. The centerline of the water inlet 5 and the axis of the rotating shaft 3 are on the same straight line. In an embodiment, one end of the first connecting part 101 is connected to the inner wall of the water inlet 5, and the other end is connected to the second connecting part 102. The second connecting part 102 is also connected to the rotating shaft 3. The shaft connecting part 10 connects the rotating shaft 3 and the water inlet 5. The centerline of the water inlet 5 is collinear with the axis of the rotating shaft 3, so that after the coolant enters from the water inlet 5, the impeller 1 rotates the water evenly. To ensure the stability of the circumferential weight of the water pump during operation, multiple first connecting parts 101 are provided. These multiple first connecting parts 101 are spaced apart circumferentially on the inner sidewall of the inlet 5. Because the multiple first connecting parts 101 are spaced apart, the inlet 5 can be prevented from being blocked, ensuring that the coolant flows smoothly into the water pump. As a preferred embodiment, the second connecting part 102 is closer to the motor assembly 2 than the first connecting part 101. The first connecting part 101 is connected to the inlet 5, which is located at both ends of the housing 3. The second connecting part 102 is connected to the rotating shaft 3, and the rotating shaft 3 is installed inside the housing 4, making the dual-pump head water pump connection compact and shortening the axial length of the water pump. Furthermore, a thrust washer is provided between the second connecting part 102 and the impeller 1 to restrict the axial movement of the rotating shaft 3 and improve the service life of the water pump.

[0042] In one embodiment, refer to Figure 3The housing 4 includes a first housing 420 and a second housing 430. A groove 421 is formed at the connection between the first housing 420 and the second housing 430. The groove 421 extends radially along the housing 4 and communicates with the cavity 410. One radial end of the stator 210 extends into the groove 421. In the embodiment, the first housing 420 and the second housing 430 are connected to each other. The groove 421 is circumferentially arranged at the connection between the first housing 420 and the second housing 430. One radial end of the stator 210 extends into the groove 421. It should be noted that the distance between the inner walls of the groove 421 along the axial direction is adapted to the length of the stator 210 along the axial direction, so as to realize the limiting of the stator 210 and provide positioning space for the stator 210.

[0043] The working principle of the dual-head water pump provided in this embodiment is as follows: In the dual-head water pump, the stator 210 is set in the middle of the rotating shaft 3. The stator 210 is made of printed circuit board, which has the characteristics of small size, light weight, and low cost. In the water pump manufacturing process, the cost is mainly concentrated in the stator 210. By reducing the cost of the stator 210, the cost of the water pump is reduced. The rotating shaft 3 passes through the impeller 1 and the motor assembly 2. The two impellers 1 and the two rotors 220 are respectively set on both sides of the stator 210 along the axial direction. The rotors 220 are fixedly connected to the impellers 1. The magnetic conductor 222 is connected to the impeller 1 through the fixing groove 110. The magnet 221 is connected to the end face of the magnetic conductor 222 near the stator 210. The magnets 221 are arranged circumferentially along the end face of the magnetic conductor 222, which can make the magnetic field of the motor uniformly distributed and improve the working efficiency. By setting the magnetic conductor 222 and the magnet 221, a magnetic field is generated, forming a magnetic circuit, which improves the efficiency of the motor. The magnetic conductor 222, magnet 221, and stator 210 are tightly connected. In addition, the impeller 1 and rotor 220 are symmetrically arranged along the stator 210, so that the reaction forces generated by the two symmetrically arranged impellers 1 and two rotors 220 cancel each other out, thereby reducing pump vibration and noise. Furthermore, an inlet 5 and an outlet 6 are opened on the housing 4 to connect the cavity 410. A first flow channel 7 is formed between the housing 4 and the impeller 1. A second flow channel 230 is formed between the stator 210 and the rotor 220. A third flow channel 9 is arranged radially between the shaft 3 and the impeller 1. The coolant passes through the inlet 5, the first flow channel 7, the second flow channel 230, the third flow channel 9, and the outlet 6 in sequence, so as to immerse the motor in the coolant and optimize the cooling effect. This application uses a stator 210 made of printed circuit board to replace the existing copper wire wound stator, which reduces the volume and weight of the stator 210 and reduces the cost, thereby reducing the overall volume and weight of the dual pump head pump and reducing the pump manufacturing cost.

[0044] Example 2

[0045] Unlike the above embodiments, this embodiment provides a vehicle equipped with the aforementioned dual-pump-head water pump. The two impellers 1, the motor assembly 2, and the rotating shaft 3 are all housed within the cavity 410. The rotating shaft 3 passes through the two impellers 1 and the motor assembly 2. One motor assembly 2 simultaneously drives the two impellers 1 to rotate. Furthermore, the stator 210 is made of a printed circuit board, which reduces the volume, weight, and cost of the stator 210, thereby reducing the volume, weight, and cost of the water pump. This facilitates the assembly of the dual-pump-head water pump and makes it easier to arrange in the vehicle's space.

[0046] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A dual-head water pump, characterized in that, The device includes an impeller (1), a motor assembly (2), a rotating shaft (3), and a housing (4). A cavity (410) is provided within the housing (4). The impeller (1), the motor assembly (2), and the rotating shaft (3) are all disposed within the cavity (410). There are two impellers (1). The motor assembly (2) is disposed between the two impellers (1). The rotating shaft (3) passes through both the impellers (1) and the motor assembly (2). The motor assembly (2) includes a stator (210) made of a printed circuit board. The motor assembly (2) further includes a rotor (220), there are two rotors (220), the two rotors (220) are respectively disposed between the stator (210) and the two impellers (1), the rotor (220) includes a magnet (221) and a magnetic conductor (222), the magnet (221) is disposed circumferentially along the magnetic conductor (222) on the end face of the magnetic conductor (222) near the stator (210), the magnetic conductor (222) is connected to the impeller (1).

2. The dual-head water pump according to claim 1, characterized in that, The impeller (1) includes a fixed groove (110) and a groove wall (120). The radial inner end of the magnetic conductor (222) is disposed in the fixed groove (110). The groove wall (120) is disposed on the side of the fixed groove (110) near the stator (210). There is a gap between the groove wall (120) and the magnet (221) in the radial direction.

3. The dual-head water pump according to claim 1, characterized in that, The housing (4) has an inlet (5) and an outlet (6) at both ends along the axial direction, which are connected to the cavity (410). A first flow channel (7) is provided between the housing (4) and the impeller (1) to connect the inlet (5). A second flow channel (230) is provided between the stator (210) and the rotor (220). The second flow channel (230) is connected to the first flow channel (7) and the outlet (6).

4. The dual-head water pump according to claim 3, characterized in that, The dual-head pump also includes a retaining ring (8), which is disposed in the first flow channel (7) and located between the outer radial end of the housing (4) and the impeller (1). The retaining ring (8) abuts against the inner radial wall of the housing (4) and has a gap between it and the outer radial end of the impeller (1).

5. The dual-head water pump according to claim 3, characterized in that, The rotating shaft (3) and the impeller (1) have a third flow channel (9) in the radial direction, and the third flow channel (9) connects the second flow channel (230) and the outlet (6).

6. The dual-head water pump according to claim 3, characterized in that, The dual-head water pump also includes a shaft connection part (10), which is disposed at both ends of the shaft (3) along the axial direction. The shaft connection part (10) includes a first connection part (101) and a second connection part (102) connected together. The first connection part (101) is connected to the inlet (5), and the second connection part (102) is connected to the shaft (3). The center line of the inlet (5) and the axis of the shaft (3) are on the same straight line.

7. The dual-head water pump according to claim 1, characterized in that, The housing (4) includes a first housing (420) and a second housing (430). A groove (421) is provided at the connection between the first housing (420) and the second housing (430). The groove (421) communicates with the cavity (410). One end of the stator (210) extends into the groove (421) in the radial direction.

8. A vehicle, characterized in that, Including the dual-head water pump as described in any one of claims 1 to 7.

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