Liquid-cooled hub motor driving wheel and motorcycle liquid cooling system

Abstract

The utility model discloses a liquid-cooled hub motor driving wheel and a motorcycle liquid cooling system, which can not only efficiently cool a built-in controller, but also efficiently cool a coil of a stator winding by filling a motor installation space with a coolant, thereby thoroughly solving the problem of heating of a hub motor and the controller. The performance and the braking capacity of the hub motor are improved, meanwhile, the observation lens is installed on the first end cover and / or the second end cover, the condition of the coolant in the motor installation space can be observed very conveniently, timely supplement is facilitated, and therefore it is ensured that the coil and the controller are cooled continuously and efficiently.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motorcycle technical field, concretely relates to a liquid cooling type wheel hub motor drive wheel and motorcycle liquid cooling system. BACKGROUND

[0002] With the gradually increasing importance of environmental protection in China, the electric motorcycle driven by the motor will gradually replace the traditional motorcycle driven by the internal combustion engine. The existing electric motorcycle generally adopts the driving form of the wheel hub motor, omits a large number of transmission components, and makes the vehicle structure simpler.

[0003] The controller of the existing electric motorcycle wheel hub motor is usually in the form of external installation based on the need of heat dissipation, which leads to the need of external wiring harness for connecting between the wheel hub motor and the controller, not only makes the wiring more complex, but also affects the closed nature of the wheel hub motor and limits the water crossing ability of the electric motorcycle.

[0004] Therefore, a wheel hub motor with internal controller appears in the market, only the controller is installed in the internal of the wheel hub motor, and the structure design is almost not changed, so not only the heat dissipation problem of the controller is not solved, but also the huge heat of the wheel hub motor itself is superimposed, which further affects the performance and braking capacity of the wheel hub motor.

[0005] It is urgent to solve the above problems. UTILITY MODEL CONTENT

[0006] In order to solve the technical problem of insufficient heat dissipation capacity of the wheel hub motor with internal controller, the utility model provides a liquid cooling type wheel hub motor drive wheel and motorcycle liquid cooling system.

[0007] Its technical scheme is as follows:

[0008] The utility model provides a kind of liquid-cooled wheel hub motor drive wheel, including wheel axle and the wheel hub motor shell assembly being installable on wheel axle, the wheel hub motor shell assembly includes motor shell, wheel hub is synchronously rotated and surrounds in the periphery of motor shell and the first end cover and the second end cover are relatively fixed and cover in the both sides of motor shell, the first end cover and the second end cover can be rotatably sleeved on wheel axle, the motor shell, first end cover and second end cover are enclosed and form motor installation space, which is installed with stator support, stator winding and rotor, the stator support is synchronously rotated and sleeved on the outer peripheral surface of stator support, the rotor is synchronously rotated and installed on the inner peripheral surface of motor shell, and can be rotated under the driving of stator winding, the controller is installed on the stator support, the first oil seal is installed between the first end cover and wheel axle, the second oil seal is installed between the second end cover and wheel axle, the motor installation space is filled with coolant, and the lens mounting hole is formed on the first end cover and / or second end cover, and the observation lens is sealingly installed on the lens mounting hole.

[0009] A motorcycle liquid cooling system includes a circulating pump and an air-cooled radiator, both of which are installed on a motorcycle frame, and the above-mentioned liquid-cooled wheel hub motor drive wheel.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The liquid-cooled wheel hub motor drive wheel and the motorcycle liquid cooling system have the following technical solutions: the motor installation space is filled with coolant, which not only efficiently cools the built-in controller, but also efficiently cools the coils of the stator winding, completely solving the heating problem of the wheel hub motor and the controller, improving the performance and braking capacity of the wheel hub motor, and through the installation of the observation lens on the first end cover and / or the second end cover, the coolant condition in the motor installation space can be easily observed, which facilitates timely replenishment, thereby ensuring continuous and efficient cooling of the coils and the controller. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the liquid-cooled wheel hub motor drive wheel.

[0013] Figure 2 It is a sectional view of the liquid-cooled wheel hub motor drive wheel after removing the tire.

[0014] Figure 3 It is a schematic view of the cooperation relationship between the speed measuring driving gear and the speed measuring driven gear.

[0015] Figure 4 It is a structural schematic view of the stator support.

[0016] Figure 5 Schematic diagram of a coolant circulation circuit. DETAILED DESCRIPTION

[0017] The utility model will be further explained in connection with the embodiments and drawings.

[0018] As Figure 1 and Figure 2 A liquid-cooled wheel hub motor drive wheel, as shown in the drawings, mainly comprises a wheel shaft 1, a wheel hub motor shell assembly 2 rotatably sleeved on the wheel shaft 1, and a tire 12 synchronously rotatingly sleeved outside the wheel hub motor shell assembly 2.

[0019] The wheel hub motor shell assembly 2 comprises a motor shell 2f, a wheel hub 2a synchronously rotatingly surrounding the outer periphery of the motor shell 2f, and a first end cover 2b and a second end cover 2c fixedly covering the two sides of the motor shell 2f, respectively, the first end cover 2b and the second end cover 2c are rotatably sleeved on the wheel shaft 1, the wheel hub 2a is fixedly installed on the outer peripheral surface of the motor shell 2f, and the two sides of the motor shell 2f are fixedly connected with the outer edges of the first end cover 2b and the second end cover 2c, respectively, so as to form a motor installation space enclosed by the motor shell 2f, the first end cover 2b and the second end cover 2c, a stator support 3, a stator winding 4 and a rotor 5 are installed in the motor installation space, the stator support 3 is synchronously rotatingly sleeved on the wheel shaft 1, the stator winding 4 is synchronously rotatingly sleeved on the outer peripheral surface of the stator support 3, and the rotor 5 is synchronously rotatingly installed on the inner peripheral surface of the motor shell 2f, and the rotor 5 can rotate under the driving of the stator winding 4, through such a design, the structure is stable and reliable, which can not only protect the components in the motor installation space, but also facilitate maintenance and maintenance.

[0020] A controller 8 is installed on the stator support 3, a first oil seal 13 is installed between the first end cover 2b and the wheel shaft 1, a second oil seal 14 is installed between the second end cover 2c and the wheel shaft 1, the motor installation space is filled with coolant, at least one of the first end cover 2b and the second end cover 2c is provided with a lens installation hole 2d, and an observation lens 15 is sealingly installed on the lens installation hole 2d. Therefore, by filling the motor installation space with coolant, not only the built-in controller 8 can be efficiently cooled, but also the coils of the stator winding 4 can be efficiently cooled, which completely solves the heating problem of the wheel hub motor and the controller 8, and improves the performance and braking capacity of the wheel hub motor. At the same time, by installing the observation lens 15 on the first end cover 2b and / or the second end cover 2c, the coolant condition in the motor installation space can be observed very conveniently, which facilitates timely replenishment, so as to ensure continuous and efficient cooling of the coils and the controller 8.

[0021] Further, the coolant is preferably cooling oil, which not only can efficiently cool the coils and the controller 8, but also can lubricate the components in the motor installation space.

[0022] Please refer to Figure 1 A plurality of lens mounting holes 2d are formed on the first end cover 2b and / or the second end cover 2c in a circumferential direction. By arranging a plurality of observation lenses 15, the wheel does not need to be rotated when checking the coolant, and the convenience of the inspection is improved.

[0023] Please refer to Figure 2 The stator support 3 is recessed on one side close to the second end cover 2c to form a first annular groove 3b, and the controller 8 is installed in the first annular groove 3b. The reliable installation of the controller 8 is ensured, and interference with surrounding components is avoided.

[0024] Please refer to Figures 2-4 The stator support 3 is recessed on one side close to the first end cover 2b to form a second annular groove 3c, and the second annular groove 3c has a plurality of radially extending support reinforcing ribs 3d, which are uniformly distributed in the circumferential direction. Lightweight design is achieved, and the structural strength of the stator support 3 is ensured.

[0025] The bearing seat 3a is integrally formed at the bottom of the second annular groove 3c, the bearing seat 3a is provided with an axle mounting hole 3a1 which communicates the first annular groove 3b and the second annular groove 3c, and the axle part of the speed measuring driven gear 7 is rotatably installed in the axle mounting hole 3a1, so as to ensure the installation reliability of the speed measuring driven gear 7.

[0026] Meanwhile, the tooth part of the speed measuring driven gear 7 protrudes from the second annular groove 3c, the first end cover 2b is synchronously rotatably sleeved with the speed measuring driving gear 6 which is engaged with the speed measuring driven gear 7, and the resolver 8a which is opposite to the axle mounting hole 3a1 is integrated on the controller 8, so as to detect the rotating speed of the axle part of the speed measuring driven gear 7 through the resolver 8a. The resolver 8a can be a motor encoder. Therefore, the rotating speed of the speed measuring driving gear 6 can be accurately obtained according to the rotating speed of the speed measuring driven gear 7 measured by the resolver 8a, and the rotating speed of the wheel hub motor shell assembly 2 is accurately obtained since the rotating speed of the wheel hub motor shell assembly 2 is the same as the rotating speed of the speed measuring driving gear 6. Compared with the traditional mode of the Hall sensor cooperating with the magnetic ring, the detection accuracy is greatly improved, the response delay is greatly reduced, and higher use requirements are met. It should be pointed out that since the coolant is preferably cooling oil, the speed measuring driving gear 6 and the speed measuring driven gear 7 can be well lubricated.

[0027] Please refer to Figure 2 and Figure 3The two sides of the motor housing 2f are formed with first flange rings 2f1, the outer edge of the first end cover 2b is formed with second flange rings 2b2 matched with the corresponding first flange rings 2f1, the second flange rings 2b2 are sealingly connected with the corresponding first flange rings 2f1 through a plurality of screws, and the outer edge of the second end cover 2c is formed with third flange rings 2c1 matched with the corresponding first flange rings 2f1, the third flange rings 2c1 are sealingly connected with the corresponding first flange rings 2f1 through a plurality of screws. Through the cooperation of the flange rings, not only the reliable connection of the motor housing 2f with the first end cover 2b and the second end cover 2c is ensured, but also the sealing performance is good.

[0028] Please refer to Figure 1 In the embodiment, the first end cover 2b and the second end cover 2c are rotatably sleeved on the wheel shaft 1 through the first bearing 9, which is simple and reliable. Specifically, the inner side of the first end cover 2b is recessed to form a bearing mounting groove 2b1 matched with the first bearing 9, and the speed measuring driving gear 6 is locked on the first end cover 2b through a plurality of screws, wherein the screws are uniformly distributed in the circumferential direction to ensure the reliable connection of the speed measuring driving gear 6. The inner ring of the speed measuring driving gear 6 is integrally formed with a bearing pressing ring 6a protruding into the bearing mounting groove 2b1, and the bearing pressing ring 6a presses the first bearing 9 in the bearing mounting groove 2b1 to ensure the reliable installation of the first bearing 9.

[0029] Correspondingly, the end face of the bearing seat 3a is provided with a bearing seat cover 11 for pressing the second bearing 10 in the shaft mounting hole 3a1 through screws, thereby ensuring the installation reliability of the second bearing 10.

[0030] In the embodiment, the diameter of the speed measuring driving gear 6 is greater than the diameter of the speed measuring driven gear 7, and the cooperation of the large gear driving the small gear is adopted, which not only reasonably utilizes the installation space but also ensures the high precision of measurement.

[0031] In addition, the stator support 3 is designed in an integral molding manner, has high structural strength, good stability, and is durable.

[0032] Please refer to Figure 5 A motorcycle liquid cooling system, comprising a circulating pump 16 and an air-cooled radiator 17 both mounted on a motorcycle frame and the above-mentioned liquid-cooled hub motor drive wheel, the motor mounting space, the circulating pump 16 and the air-cooled radiator 17 constitute a coolant circulation loop through pipelines. By setting the coolant circulation loop, the coolant in the motor mounting space can be efficiently cooled, further improving the heat dissipation performance of the coil and the controller 8. Among them, since the coolant is preferably cooling oil, the circulating pump 16 is an oil pump.

[0033] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0034] In the utility model, unless explicitly defined and limited otherwise, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless explicitly defined and limited otherwise, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper side" and "upper surface" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower side" and "lower surface" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] Finally, it should be noted that the above description is only the preferred embodiment of the utility model, and ordinary skilled persons in the art can make various similar expressions under the inspiration of the utility model without violating the purpose and claims of the utility model, and such changes fall within the protection scope of the utility model.

Claims

1. A liquid-cooled wheel hub motor drive wheel comprising a wheel shaft (1) and a wheel hub motor housing assembly (2) mounted on the wheel shaft (1), the wheel hub motor housing assembly (2) comprising a motor housing (2f), a wheel hub (2a) synchronously rotating around the outer periphery of the motor housing (2f), and a first end cover (2b) and a second end cover (2c) fixedly covering opposite sides of the motor housing (2f), the first end cover (2b) and the second end cover (2c) being rotatably sleeved on the wheel shaft (1), the motor housing (2f), the first end cover (2b) and the second end cover (2c) forming a motor mounting space, the motor mounting space being provided with a stator support (3), a stator winding (4) and a rotor (5), the stator support (3) being synchronously rotatably sleeved on the wheel shaft (1), the stator winding (4) being synchronously rotatably sleeved on the outer periphery of the stator support (3), and the rotor (5) being synchronously rotatably mounted on the inner periphery of the motor housing (2f) and being capable of rotating under the drive of the stator winding (4), characterized in that: A controller (8) is mounted on the stator support (3), a first oil seal (13) is mounted between the first end cover (2b) and the wheel shaft (1), a second oil seal (14) is mounted between the second end cover (2c) and the wheel shaft (1), the motor mounting space is filled with coolant, lens mounting holes (2d) are formed in the first end cover (2b) and / or the second end cover (2c), and observation lenses (15) are sealingly mounted in the lens mounting holes (2d).

2. The liquid-cooled wheel hub motor drive wheel according to claim 1, characterized in that: The coolant is cooling oil.

3. The liquid-cooled wheel hub motor drive wheel of claim 1, wherein: A plurality of lens mounting holes (2d) are formed in the first end cover (2b) and / or the second end cover (2c) and are uniformly distributed in the circumferential direction.

4. The liquid-cooled wheel hub motor drive wheel of claim 1, wherein: A first annular groove (3b) is recessed on one side of the stator support (3) close to the second end cover (2c), and the controller (8) is mounted in the first annular groove (3b).

5. The liquid-cooled wheel hub motor drive wheel of claim 4, wherein: A second annular groove (3c) is recessed on one side of the stator support (3) close to the first end cover (2b), a bearing seat (3a) is integrally formed on the groove bottom of the second annular groove (3c), an axle mounting hole (3a1) is formed in the bearing seat (3a) and communicates with the first annular groove (3b) and the second annular groove (3c), an axle portion of a speed measuring driven gear (7) is rotatably mounted in the axle mounting hole (3a1), a tooth portion of the speed measuring driven gear (7) protrudes out of the second annular groove (3c), a speed measuring driving gear (6) engaged with the speed measuring driven gear (7) is synchronously rotatably sleeved on the first end cover (2b), and a rotary transformer (8a) opposite to the axle mounting hole (3a1) is integrated on the controller (8), so that the rotational speed of the axle portion of the speed measuring driven gear (7) can be detected through the rotary transformer (8a).

6. The liquid-cooled wheel hub motor drive wheel of claim 1, wherein: First flange rings (2f1) are formed on both sides of the motor housing (2f), an outer edge of the first end cover (2b) is formed with second flange rings (2b2) matched with the corresponding first flange rings (2f1), the second flange rings (2b2) are sealingly connected with the corresponding first flange rings (2f1) through a plurality of screws, and an outer edge of the second end cover (2c) is formed with third flange rings (2c1) matched with the corresponding first flange rings (2f1), the third flange rings (2c1) are sealingly connected with the corresponding first flange rings (2f1) through a plurality of screws.

7. A motorcycle liquid cooling system characterized by: A circulating pump (16) and an air-cooled radiator (17) are mounted on the motorcycle frame, and the liquid-cooled wheel hub motor drive wheel of any one of claims 1-6, the motor mounting space, the circulating pump (16) and the air-cooled radiator (17) constitute a coolant circulation loop through pipelines.

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