Constant-force winding device for wireless charging coil of vehicle-mounted battery

Abstract

The utility model relates to a constant-force winding device for a wireless charging coil of a vehicle-mounted battery, and belongs to the technical field of winding of wireless charging coils of vehicle power batteries. According to the constant-force winding device for the wireless charging coil of the vehicle-mounted battery, when the constant-force winding device for the wireless charging coil works, a self-adhesive multi-strand wire firstly slides through the solvent coating device, the surface of the multi-strand wire is uniformly coated with a layer of solvent, and then the multi-strand wire is primarily wound and formed on the winding device; the wiring density control device comprises a mechanical extrusion part and an electronic control part mainly comprising a pressure sensor, and the mechanical extrusion part and the electronic control part jointly act to ensure that the stress of the coil on each straight edge of each circle during shaping is constant; pressure change caused by different positions of the inner ring and the outer ring of the coil is avoided, it is guaranteed that the distance between the coils is the same, therefore, it is guaranteed that any turn-to-turn distance of the coils is equal, and the winding height adjusting device is used for adjusting the winding thickness of the coils.

Description

Technical Field

[0001] The utility model relates to the technical field of winding a wireless charging coil of an automobile power battery, in particular to a constant force winding device for a wireless charging coil of an on-board battery. Background Art

[0002] With the demand for energy conservation, emission reduction and air pollution control, new energy vehicles (pure electric and hybrid vehicles) are becoming the new main force in the automotive industry and developing rapidly; therefore, wireless chargers used in automobiles have also emerged and gradually matured, and will be launched on the market and put into mass production.

[0003] The existing on-board wireless charging coil winding device has achieved semi-automation, but when the traditional coil is wound, the pressing force of the pressing device will appear heavier or lighter, resulting in different pressing strengths. The coil is squeezed excessively due to different pressing strengths, and the service life is greatly reduced. In severe cases, it will be directly scrapped. In addition, there is a lack of a metering structure for the coil winding each time, resulting in different numbers of windings and waste. Therefore, a constant force winding device for a vehicle-mounted battery wireless charging coil is proposed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a constant force winding device for a vehicle-mounted battery wireless charging coil, which has the advantages of constant clamping force and automatic detection of the outer diameter of the coil. It solves the problem that when the traditional coil is clamped during winding, the pressing force of the clamping device may be heavier or lighter, resulting in excessive squeezing of the coil due to different pressing strengths, which greatly reduces its service life. In severe cases, the coil will be directly scrapped. In addition, there is a lack of a metering structure for the coil each time it is wound, which leads to waste caused by different numbers of windings.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a constant force winding device for a wireless charging coil of a vehicle-mounted battery, comprising a workbench, a solvent coating device is arranged on the left side of the workbench, a winding device for winding the coil is arranged in the middle of the workbench, a winding height adjustment device for adjusting the height of the winding device is arranged above the middle of the workbench, a wiring density control device for controlling the outer diameter of the coil is arranged on the right side of the workbench, and the wiring density control device includes a mechanical extrusion device and an electronic control device fixed on the right side of the workbench;

[0006] The mechanical extrusion device comprises a spring fixedly connected to one end of the upper side of the workbench, a resisting plate fixedly connected to one end of the spring, a movable plate slidably connected to the upper side of the workbench, and a contact switch fixedly installed on one side of the movable plate;

[0007] The electronic control device includes a linear slide rail fixedly connected to the right side of the workbench, a second telescopic cylinder fixedly installed on the inner wall of the right side of the linear slide rail, a slider fixedly connected to the output end of the second telescopic cylinder, a connecting plate fixedly connected to the outside of the slider, a clamping straight edge bolted to the inside of the connecting plate, and a pressure sensor fixedly installed on the left side of the clamping straight edge.

[0008] Furthermore, the winding device includes a driving motor fixedly connected to the inner bottom wall of the workbench, a telescopic connecting shaft fixedly connected to the output end of the driving motor, a coil space frame fixedly connected to the upper side of the telescopic connecting shaft, a coil limiting plate fixedly connected to the upper side of the coil space frame, and two columns fixedly connected to the upper side of the coil limiting plate.

[0009] Furthermore, the winding height adjustment device includes a support frame fixedly connected to the upper side of the back of the workbench, a first telescopic cylinder fixedly installed on the upper side of the support frame, a bearing fixedly sleeved on the output end of the first telescopic cylinder, and a connecting block rotatably sleeved on the outside of the bearing.

[0010] Furthermore, bolts are inserted on both the left and right sides of the movable plate, and a plurality of positioning grooves matching the bolts are opened on the side surface of the workbench.

[0011] Furthermore, the plurality of positioning grooves are arranged in groups of two, and each group of positioning grooves is arranged vertically.

[0012] Furthermore, a slide groove matching the lower side of the movable plate is provided on the upper side surface of the workbench, and the lower side of the movable plate is slidably connected in the slide groove.

[0013] Furthermore, a controller is embedded and installed on the lower side of the front end surface of the workbench.

[0014] Furthermore, the left end of the upper side of the workbench is rotatably connected to two transmission rollers, and the two transmission rollers are arranged horizontally.

[0015] Compared with the prior art, the utility model provides a constant force winding device for a vehicle-mounted battery wireless charging coil, which has the following beneficial effects:

[0016] 1. The constant force winding device of the vehicle-mounted battery wireless charging coil, when the wireless charging coil constant force winding device is operated, the self-adhesive multi-strand wire first slides through the solvent coating device, and a layer of solvent is evenly coated on the surface of the multi-strand wire, and then the multi-strand wire is preliminarily wound and formed on the winding device, and then the coil is extruded and shaped by the constant force extrusion device on the right. The wiring density control device includes a mechanical extrusion part and an electronic control part mainly composed of a pressure sensor. The two work together to ensure that the force on each straight edge of each circle of the coil during shaping is constant, and there is no pressure change due to the different positions of the inner and outer circles of the coil, which ensures that the coil spacing is the same, thereby ensuring that any turn distance of the coil is equal, and the winding height adjustment device is used to adjust the winding thickness of the coil.

[0017] 2. The constant force winding device for the on-board battery wireless charging coil, when the coil is wound on the upper outer wall of the workbench, as the outer diameter of the coil expands after winding, it will push the resistance plate to move to the side of the movable plate, and when it touches the contact switch, it will disconnect all the devices, ensuring that the outer diameter of each coil can be set according to your own needs. This solves the problem that when the traditional coil is wound, the pressing force of the clamping device will have different pressing forces, such as heavier or lighter, which leads to excessive squeezing of the coil due to different pressing forces and greatly reduces its service life. In severe cases, it will be directly scrapped, and each winding lacks a metering structure for the coil, resulting in waste caused by different numbers of windings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model;

[0020] Figure 3 It is a top view of the local structure of the workbench of the utility model;

[0021] Figure 4 It is a structural stereogram of the movable plate and the contact plate of the utility model.

[0022] In the figure: 1 workbench, 2 support frame, 3 first telescopic cylinder, 4 bearing, 5 connecting block, 6 coil limit plate, 7 column, 8 coil space frame, 9 drive motor, 10 telescopic connecting shaft, 11 linear slide rail, 12 second telescopic cylinder, 13 slider, 14 connecting plate, 15 clamping straight edge, 16 pressure sensor, 17 controller, 18 positioning groove, 19 bolt, 20 contact switch, 21 movable plate, 22 spring, 23 contact plate, 24 solvent coating device. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] See also Figure 1-4 In this embodiment, a constant force winding device for a vehicle-mounted battery wireless charging coil includes a workbench 1, a solvent coating device 24 is provided on the left side of the workbench 1, a winding device for winding the coil is provided in the middle of the workbench 1, a winding height adjustment device for adjusting the height of the winding device is provided above the middle of the workbench 1, and a wiring density control device for controlling the outer diameter of the coil is provided on the right side of the workbench 1. The wiring density control device includes a mechanical extrusion device and an electronic control device fixed on the right side of the workbench 1. The mechanical extrusion device includes a spring 22 fixedly connected to one end of the upper side of the workbench 1, a resisting plate 23 fixedly connected to one end of the spring 22, a movable plate 21 slidably connected to the upper side of the workbench 1, and a contact switch 20 fixedly installed on one side of the movable plate 21. The electronic control device includes a linear slide 11 fixedly connected to the right side of the workbench 1, a second telescopic cylinder 12 fixedly installed on the inner wall of the right side of the linear slide 11, a slider 13 fixedly connected to the output end of the second telescopic cylinder 12, a connecting plate 14 fixedly connected to the outside of the slider 13, a clamping straight edge 15 bolted to the inside of the connecting plate 14, and a pressure sensor 16 fixedly installed on the left side of the clamping straight edge 15.

[0026] The winding device includes a driving motor 9 fixedly connected to the inner bottom wall of the workbench 1, a telescopic connecting shaft 10 fixedly connected to the output end of the driving motor 9, a coil space frame 8 fixedly connected to the upper side of the telescopic connecting shaft 10, a coil limiting plate 6 fixedly connected to the upper side of the coil space frame 8 and two columns 7 fixedly connected to the upper side of the coil limiting plate 6, and the winding height adjustment device includes a support frame 2 fixedly connected to the upper side of the back of the workbench 1, a first telescopic cylinder 3 fixedly installed on the upper side of the support frame 2, and a fixed sleeve. The bearing 4 at the output end of the first telescopic cylinder 3 and the connecting block 5 rotatably sleeved on the outside of the bearing 4, bolts 19 are inserted on both sides of the movable plate 21, and a plurality of positioning grooves 18 matching the bolts 19 are provided on the upper side of the workbench 1. The plurality of positioning grooves 18 are arranged in groups of two, and each group of positioning grooves 18 is arranged vertically. A slide groove matching the lower side of the movable plate 21 is provided on the upper surface of the workbench 1, and the lower side of the movable plate 21 is slidably connected in the slide groove, and a controller 17 is inlaid and installed on the lower side of the front end surface of the workbench 1.

[0027] Embodiment 2:

[0028] See also Figure 1-2 , based on the first embodiment, it includes two transmission rollers rotatably connected to the left end of the upper side of the workbench 1, and the two transmission rollers are arranged horizontally.

[0029] By adopting the above technical solution, when the coil moves to the upper side of the workbench 1, a better transmission purpose can be achieved through the transmission between the two transmission rollers.

[0030] The working principle of the above embodiment is:

[0031] The coil passes between the two transmission rollers on the left side of the workbench 1 and fits on the outer surface of the coil space frame 8. During the movement, the coil will slide through the output end of the solvent coating device 24, and the surface of the coil will be evenly coated with a layer of solvent. As the controller 17 starts the drive motor 9, the coil begins to rotate and wind around the outer side of the coil space frame 8 to perform preliminary winding and forming. Every time the coil limit plate 6 rotates a quarter of a turn, it will stop for a period of time. During this period, the second telescopic cylinder 12 extends the slider 13 at the telescopic end to push the pressure sensor 16 on one side of the pressing straight edge 15 to extrude and shape the coil surface, thereby ensuring that any distance between the turns of the coil is equal. The polyvinylidene fluoride used in the pressure sensor 16 has a certain softness to avoid damage to the coil surface. No harm is caused, and the pressure sensor 16 is controlled by a dedicated circuit to ensure that the clamping force is constant and no pressure change is caused by the different positions of the inner and outer circles of the coil. After the pressing is completed, the driving motor 9 rotates the coil space frame 8 again and repeats the operation. After the coil is wound, the outer diameter will contact and push the surface of the contact plate 23. According to different vehicle models, the movable plate 21 is aligned with the positioning grooves 18 in different positions up and down, and then the bolts 19 are inserted to fix it. As the contact plate 23 is moved by the coil to the surface of the movable plate 21, the contact switch 20 is pressed and contacted, and then the driving motor 9 and the second telescopic cylinder 12 are disconnected. At the same time, the telescopic end of the first telescopic cylinder 3 will also compress and separate the coil limit plate 6 from the upper side of the workbench 1, indicating that the coil has reached the set outer diameter requirement and the coil can be directly taken out.

[0032] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A constant force winding device for a vehicle-mounted battery wireless charging coil, comprising a workbench (1), characterized in that: A solvent coating device (24) is arranged on the left side of the workbench (1), a winding device for winding a coil is arranged in the middle of the workbench (1), a winding height adjustment device for adjusting the height of the winding device is arranged above the middle of the workbench (1), and a wiring density control device for controlling the outer diameter of the coil is arranged on the right side of the workbench (1), and the wiring density control device includes a mechanical extrusion device and an electronic control device fixed on the right side of the workbench (1); The mechanical extrusion device comprises a spring (22) fixedly connected to one end of the upper side of the workbench (1), a contact plate (23) fixedly connected to one end of the spring (22), a movable plate (21) slidably connected to the upper side of the workbench (1), and a contact switch (20) fixedly mounted on one side of the movable plate (21); The electronic control device comprises a linear slide rail (11) fixedly connected to the right side of the workbench (1), a second telescopic cylinder (12) fixedly mounted on the inner wall of the right side of the linear slide rail (11), a slider (13) fixedly connected to the output end of the second telescopic cylinder (12), a connecting plate (14) fixedly connected to the outside of the slider (13), a clamping straight edge (15) bolted to the inside of the connecting plate (14), and a pressure sensor (16) fixedly mounted on the left side of the clamping straight edge (15).

2. A constant force winding device for a vehicle-mounted battery wireless charging coil according to claim 1, characterized in that: The winding device comprises a driving motor (9) fixedly connected to the inner bottom wall of the workbench (1), a telescopic connecting shaft (10) fixedly connected to the output end of the driving motor (9), a coil spacer (8) fixedly connected to the upper side of the telescopic connecting shaft (10), a coil limiting plate (6) fixedly connected to the upper side of the coil spacer (8), and two columns (7) fixedly connected to the upper side of the coil limiting plate (6).

3. A constant force winding device for a vehicle-mounted battery wireless charging coil according to claim 2, characterized in that: The winding height adjustment device comprises a support frame (2) fixedly connected to the upper back side of the workbench (1), a first telescopic cylinder (3) fixedly installed on the upper side of the support frame (2), a bearing (4) fixedly sleeved on the output end of the first telescopic cylinder (3), and a connecting block (5) rotatably sleeved on the outside of the bearing (4).

4. The constant force winding device for a vehicle-mounted battery wireless charging coil according to claim 1, characterized in that: Bolts (19) are inserted on both left and right sides of the movable plate (21), and a plurality of positioning grooves (18) matching the bolts (19) are provided on the upper side of the workbench (1).

5. The constant force winding device for a vehicle-mounted battery wireless charging coil according to claim 4, characterized in that: The plurality of positioning grooves (18) are arranged in groups of two, and each group of positioning grooves (18) is arranged vertically.

6. The constant force winding device for a vehicle-mounted battery wireless charging coil according to claim 1, characterized in that: The upper surface of the workbench (1) is provided with a slide groove matched with the lower side of the movable plate (21), and the lower side of the movable plate (21) is slidably connected in the slide groove.

7. The constant force winding device for a vehicle-mounted battery wireless charging coil according to claim 1, characterized in that: A controller (17) is embedded and installed on the lower side of the front end surface of the workbench (1).

8. The constant force winding device for a vehicle-mounted battery wireless charging coil according to claim 1, characterized in that: The left end of the upper side of the workbench (1) is rotatably connected to two transmission rollers, and the two transmission rollers are arranged in a transverse direction.

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