Starting power assisting device of hub motor

Abstract

The utility model discloses a starting power assisting device of a hub motor. The device is applied to the field of hub motors, and comprises a hub motor, one side of which is provided with a butt joint groove; the rotating disc and a main shaft of the hub motor are coaxially arranged, a butt joint block capable of being connected with the butt joint groove in a clamped mode is arranged on one side of the rotating disc, and a driving rod is fixedly connected to the other side of the rotating disc; the guide disc is located on one side of the rotary disc, an arc-shaped guide groove is formed in the guide disc, and the driving rod is slidably located in the guide groove; the hydraulic unit comprises a first hydraulic bag and a second hydraulic bag, and the first hydraulic bag and the second hydraulic bag are located in the guide groove and located on the two sides of the driving rod correspondingly; and the driving unit is used for driving the butt-joint block to be clamped with or separated from the butt-joint groove. When the hub motor brakes, the rotating disc is in butt joint with the hub motor, and the driving rod compresses the first hydraulic bag or the second hydraulic bag. According to the utility model, the problem that the motor coil is easy to heat instantly because a large amount of current is needed in the starting process of the existing hub motor can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hub motors, in particular to a starting assist device for hub motors. Background Art

[0002] In-wheel motors, a novel electric vehicle powertrain that integrates power, transmission, and braking systems, have garnered widespread attention in recent years. Their high power density, light weight, low noise, low energy consumption, and efficient space utilization make them promising applications in short-distance commuting and urban mobility. However, despite their numerous advantages, practical applications still present technical challenges and friction issues. During startup, in-wheel motors typically overcome significant friction, requiring a significant current input. This current causes the motor coils to heat up instantaneously, which can damage them over time and reduce their lifespan. Utility Model Content

[0003] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a starting assist device for a hub motor to improve the problem that the existing hub motor requires a large amount of current during the starting process, which makes the motor coil easily heated instantly.

[0004] To achieve the above-mentioned and other related purposes, the present invention discloses a starting assist device for a hub motor, comprising:

[0005] The hub motor has a docking groove on one side;

[0006] A turntable is coaxially arranged with the main shaft of the hub motor, a docking block that allows engagement with the docking groove is provided on one side of the turntable, and a driving rod is fixedly connected to the other side of the turntable;

[0007] A guide plate is located on one side of the turntable, the guide plate is coaxially arranged with the turntable, and an arc-shaped guide groove is opened on the guide plate, and the driving rod is slidably located in the guide groove;

[0008] a hydraulic unit comprising a first hydraulic bladder and a second hydraulic bladder, wherein the first hydraulic bladder and the second hydraulic bladder are located in the guide groove and respectively on both sides of the drive rod; and

[0009] A driving unit, which is used to drive the docking block in the turntable to engage with the docking groove in the hub motor;

[0010] When the wheel hub motor brakes, the turntable is docked with the wheel hub motor, and the driving rod compresses the first hydraulic bag or the second hydraulic bag.

[0011] In one embodiment of the present invention, a sliding rod is fixedly connected to the guide plate, and the sliding rod is slidably connected to the vehicle frame, and the sliding direction of the sliding rod is the same as the axial direction of the hub motor.

[0012] In one embodiment of the present invention, the driving unit includes an electromagnet, which is fixedly connected to the vehicle frame and acts on the guide disc.

[0013] In one embodiment of the present invention, an end cover is further included, which is located on the outside of the frame and is detachably fixedly connected to the frame.

[0014] In one embodiment of the present invention, a plurality of the docking slots and a plurality of the docking blocks are provided, and the docking slots and the docking blocks are provided correspondingly.

[0015] In one solution of the present invention, a guiding structure is provided on the docking block.

[0016] In one embodiment of the present invention, the guide structure is a conical or arc-shaped guide surface.

[0017] In summary, the present invention discloses a starting assist device for a hub motor. When the hub motor brakes, the turntable docks with the hub motor, and the drive rod compresses the first hydraulic bladder or the second hydraulic bladder. When the first hydraulic bladder and the second hydraulic bladder are compressed by the drive rod, they can be used to store the potential energy of the hub motor when braking, and the potential energy can be released when the hub motor starts, thereby assisting the starting of the hub motor. Furthermore, the coil current of the hub motor at startup can be effectively reduced. This can effectively improve the problem that the existing hub motor requires a large amount of current during startup, causing the motor coil to easily heat up instantly.

[0018] It should be understood that the contents described in the utility model summary are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. The accompanying drawings are provided for a better understanding of the present disclosure and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, among which:

[0020] Figure 1 This is a schematic structural diagram of an exploded view of a starting assist device for a hub motor in one embodiment of the present invention;

[0021] Figure 2This is a structural schematic diagram of another perspective of an exploded view of a starting assist device for a hub motor in one embodiment of the present utility model;

[0022] Figure 3 The figure is a front view structural diagram of a starting assist device for a hub motor in one embodiment of the present invention.

[0023] Component number description:

[0024] 100. Hub motor; 110. Docking slot;

[0025] 200, turntable; 210, docking block; 220, driving rod;

[0026] 300, guide plate; 310, guide groove; 320, slide rod;

[0027] 400, hydraulic unit; 410, first hydraulic bag; 420, second hydraulic bag;

[0028] 500, drive unit;

[0029] 600, end cap;

[0030] 700. Frame. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0033] See also Figures 1 to 3 The present invention discloses a starting assist device for an in-wheel motor, which can be used to improve the problem of existing in-wheel motors 100 requiring a large amount of current during startup, resulting in the motor coils being prone to instantaneous heating. Specifically, the starting assist device for an in-wheel motor can include an in-wheel motor 100, a turntable 200, a guide plate 300, a hydraulic unit 400, and a drive unit 500. The in-wheel motor 100, turntable 200, and guide plate 300 are coaxially arranged, with the turntable 200 located between the guide plate 300 and the in-wheel motor 100.

[0034] Specifically, a docking slot 110 is defined on one side of the in-wheel motor 100, and a docking block 210 is provided on one side of the turntable 200. The docking block 210 and the docking slot 110 can be engaged with each other. Multiple docking blocks 210 and docking slots 110 may be provided, with each corresponding docking block 210 to each docking slot 110. However, this is not limiting, and the specific number of docking blocks 210 and docking slots 110 can be determined based on actual needs.

[0035] The driving unit 500 can be used to engage or disengage the docking block 210 in the turntable 200 with the docking slot 110 in the hub motor 100 .

[0036] It should be noted that in order to ensure smooth engagement between the docking block 210 and the docking slot 110, a guide structure may be provided on the docking block 210 so that the docking block 210 can be smoothly engaged in the docking slot 110. In some embodiments, the guide structure may be a conical or curved guide surface.

[0037] Furthermore, a drive rod 220 is fixedly connected to the other side of the turntable 200. The drive rod 220 and the docking block 210 are located on either side of the turntable 200. The drive end of the drive rod 220 is connected to a guide plate 300. The guide plate 300 is located on the side of the turntable 200 away from the in-wheel motor 100 and is coaxial with the turntable 200. The guide plate 300 is provided with an arc-shaped guide groove 310. Specifically, the drive end of the drive rod 220 is slidably connected to the guide groove 310.

[0038] In certain embodiments, the hydraulic unit 400 includes a first hydraulic bladder 410 and a second hydraulic bladder 420. The first hydraulic bladder 410 and the second hydraulic bladder 420 are located within the guide groove 310 and on either side of the drive rod 220. Therefore, when the in-wheel motor 100 brakes, the turntable 200 docks with the in-wheel motor 100, and the drive rod 220 compresses the first hydraulic bladder 410 or the second hydraulic bladder 420.

[0039] It is understood that when the first hydraulic bladder 410 and the second hydraulic bladder are compressed by the drive rod 220, they can be used to store the potential energy of the hub motor 100 during braking, and this potential energy can be released when the hub motor 100 is started, thereby assisting the starting of the hub motor 100. Furthermore, the coil current of the hub motor 100 during startup can be effectively reduced.

[0040] To improve the stability of the guide plate 300 during sliding, a sliding rod 320 may be fixedly connected to the side of the guide plate 300 away from the turntable 200, and the sliding rod 320 may be slidably connected to the frame 700. Furthermore, the sliding direction of the sliding rod 320 is the same as the axial direction of the in-wheel motor 100. By slidably connecting the sliding rod 320 to the frame 700, the stability of the guide plate 300 during sliding can be effectively improved.

[0041] When the hub motor 100 is rotating, the docking block 210 is separated from the docking slot 110. When the hub motor 100 is in a braking state, the docking block 210 is engaged with the docking slot 110, so that the turntable 200 and the hub motor 100 can rotate synchronously.

[0042] Furthermore, the driving unit 500 includes an electromagnet, which is fixedly connected to the vehicle frame 700 and acts on the guide plate 300. By adjusting the magnetic pole direction of the electromagnet, the opening and closing state between the turntable 200 and the hub motor 100 can be driven.

[0043] In some embodiments, an end cover 600 is further connected to the outer side of the frame 700 , and the end cover 600 is detachably fixedly connected to the frame 700 .

[0044] Specifically, when the in-wheel motor 100 brakes, the electromagnet is positively connected, pushing the assembly formed by the turntable 200 and the guide plate 300 toward the in-wheel motor 100. At this point, the docking groove 110 on the in-wheel motor 100 mates with the docking block 210 on the turntable 200. The drive rod 220 rotates clockwise, compressing the first hydraulic bladder 410. This compression causes the brake inside the in-wheel motor 100 to lock, completing energy storage.

[0045] When the in-wheel motor 100 is activated, the brake inside it disengages, releasing the first hydraulic bladder 410. This pushes the in-wheel motor 100 into rotation, and the drive rod 220 returns to its original position. At this point, the electromagnet is reversed, drawing the assembly formed by the turntable 200 and guide plate 300 toward the vehicle frame 700. This disengages the docking slot 110 on the in-wheel motor 100 from the docking block 210 on the turntable 200, allowing the in-wheel motor 100 to operate freely.

[0046] In summary, the present invention discloses a starting assist device for an in-wheel motor. When the in-wheel motor 100 brakes, the rotary disk 200 docks with the in-wheel motor 100, and the drive rod 220 compresses the first hydraulic bladder 410 or the second hydraulic bladder 420. When compressed by the drive rod 220, the first and second hydraulic bladders 410 and 420 can be used to store the potential energy of the in-wheel motor 100 during braking. This potential energy can then be released when the in-wheel motor 100 starts, assisting the starting of the in-wheel motor 100. Furthermore, the coil current of the in-wheel motor 100 during startup can be effectively reduced.

[0047] Therefore, the problem that the existing hub motor 100 requires a large amount of current during startup, which causes the motor coil to heat up instantly, can be effectively improved. Therefore, the present invention effectively overcomes some practical problems in the prior art and has high utilization value and practical significance.

[0048] The above-described specific embodiments of the present invention do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

Claims

1. A starting assist device for a hub motor, characterized in that: include: A hub motor (100) is provided with a docking groove (110) on one side; A turntable (200) is coaxially arranged with the main shaft of the hub motor (100), a docking block (210) capable of being engaged with the docking groove (110) is provided on one side of the turntable (200), and a driving rod (220) is fixedly connected to the other side of the turntable (200); A guide plate (300) is located on one side of the turntable (200), the guide plate (300) is coaxially arranged with the turntable (200), an arc-shaped guide groove (310) is formed on the guide plate (300), and the driving rod (220) is slidably located in the guide groove (310); a hydraulic unit (400) comprising a first hydraulic bladder (410) and a second hydraulic bladder (420), wherein the first hydraulic bladder (410) and the second hydraulic bladder (420) are located in the guide groove (310) and are respectively located on both sides of the driving rod (220); as well as A driving unit (500) for driving a docking block (210) in the turntable (200) to engage with or separate from a docking slot (110) in the hub motor (100); When the wheel hub motor (100) brakes, the turntable (200) docks with the wheel hub motor (100), and the driving rod (220) compresses the first hydraulic bag (410) or the second hydraulic bag (420).

2. The starting assist device of the hub motor according to claim 1, characterized in that: A slide bar (320) is fixedly connected to the guide plate (300), and the slide bar (320) is slidably connected to the vehicle frame (700); The sliding direction of the sliding rod (320) is the same as the axial direction of the hub motor (100).

3. The starting assist device of the hub motor according to claim 2, characterized in that: The driving unit (500) includes an electromagnet, which is fixedly connected to the vehicle frame (700) and acts on the guide plate (300).

4. The starting assist device for the hub motor according to claim 2, characterized in that: It also includes an end cover (600), which is located on the outside of the vehicle frame (700) and is detachably fixedly connected to the vehicle frame (700).

5. The starting assist device for the hub motor according to claim 1, characterized in that: A plurality of the docking grooves (110) and the docking blocks (210) are provided, and the docking grooves (110) and the docking blocks (210) are provided correspondingly.

6. The starting assist device for a hub motor according to claim 1 or 5, characterized in that: A guiding structure is provided on the docking block (210).

7. The starting assist device for the hub motor according to claim 6, characterized in that: The guiding structure is a conical surface or an arc-shaped guiding surface.

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