Non-polar magnetic attraction charging structure and smart watch

Abstract

The utility model relates to smart watch technical field especially, more particularly to a kind of non-polarity magnetic attraction charging structure and smart watch, non-polarity magnetic attraction charging structure includes middle frame, circuit board and charging seat, the side of middle frame is provided with first mount pad, and first mount pad is closely installed with first magnetic attraction electrode;Circuit board is installed in middle frame, and full-bridge rectifier circuit module is integrated on circuit board, and first electrode is electrically connected full-bridge rectifier circuit module;Second mount pad is formed on charging seat, and second mount pad is closely installed with second magnetic attraction electrode;First magnet is attracted to second magnet, first electrode contacts second electrode conduction, and the output end of full-bridge rectifier circuit module exports fixed polarity charging voltage.It reaches that charging polarity can be self-adaptive, user can directly charge without taking off watch and correcting polarity, and the beneficial effects, such as charging connection, are convenient and fast, improve the use experience of user.

Description

Technical Field

[0001] This utility model belongs to the field of smartwatch technology, and in particular relates to a non-polar magnetic charging structure and a smartwatch. Background Technology

[0002] With the rapid development of science and technology and the improvement of people's living standards, conventional watches are gradually becoming more intelligent, resulting in smartwatches and smart bracelets, among other smart wearable products. In addition to displaying time and keeping track of time, smartwatches integrate functions such as motion detection, heart rate monitoring, barometric pressure monitoring, SMS and email communication, voice interaction, and navigation.

[0003] Smartwatches integrate many functions, resulting in relatively high power consumption, typically requiring daily charging. Currently, due to space constraints in smartwatch design, the charging port is usually located on the back of the watch, and the charging polarity cannot be changed. Users must remove the watch, calibrate the polarity, and then connect it to the charging dock, making the charging process somewhat cumbersome and resulting in a poor user experience.

[0004] Therefore, this utility model addresses the aforementioned technical problems by providing a non-polar magnetic charging structure. The charging interface is located on the side of the watch, and the charging polarity is self-adaptive. Users can charge directly without removing the watch or calibrating the polarity. The charging connection is convenient and quick, improving the user experience and solving one or more of the aforementioned problems. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a non-polar magnetic charging structure, comprising:

[0006] The middle frame has a first mounting base on its side, a first magnetic electrode is tightly mounted on the first mounting base, the first magnetic electrode is equipped with a first bracket, two first magnets are arranged laterally symmetrically on the first bracket, and two first electrodes are arranged longitudinally symmetrically on the first bracket.

[0007] A circuit board is mounted inside the middle frame, and a full-bridge rectifier circuit module is integrated on the circuit board. The first electrode is electrically connected to the full-bridge rectifier circuit module.

[0008] A charging stand, wherein a second mounting base is formed on the charging stand, a second magnetic electrode is tightly mounted on the second mounting base, the second magnetic electrode is configured with a second bracket, two second magnets are arranged laterally symmetrically on the second bracket, and two second electrodes are arranged longitudinally symmetrically on the second bracket;

[0009] The first magnet and the second magnet have opposite magnetic properties. The charging base is close to the middle frame. The first magnet attracts the second magnet. The first electrode contacts the second electrode and conducts electricity. The output terminal of the full-bridge rectifier circuit module outputs a charging voltage of fixed polarity.

[0010] Optionally, in some embodiments, the first bracket has a first set of bevels and a second set of bevels, the first magnet is tightly beveled in the first set of bevels, and the first electrode is tightly beveled in the second set of bevels.

[0011] Optionally, in some embodiments, the second bracket is formed with a third set of bevels and a fourth set of bevels, the second magnet is tightly beveled in the third set of bevels, and the second electrode is tightly beveled in the fourth set of bevels.

[0012] Optionally, in some embodiments, the second bracket has an annular protrusion and the second mounting base has an annular groove, the annular protrusion being tightly fitted into the annular groove.

[0013] Optionally, in some embodiments, the second set of perforations is formed as a stepped hole, and a stepped groove is formed at the front end of the first electrode, the stepped groove being adapted to be installed with the stepped hole.

[0014] Optionally, in some embodiments, the full-bridge rectifier circuit module is configured with a first full-bridge rectifier chip and a second full-bridge rectifier chip. The first full-bridge rectifier chip is connected to a first terminal, and the second full-bridge rectifier chip is connected to a second terminal. The first full-bridge rectifier chip and the second full-bridge rectifier chip are connected in parallel to output the charging voltage.

[0015] Optionally, in some embodiments, the input terminal of the first full-bridge rectifier chip is connected in parallel with the control terminal of the second full-bridge rectifier chip, the input terminal of the second full-bridge rectifier chip is connected in parallel with the control terminal of the first full-bridge rectifier chip, and the source terminal of the first full-bridge rectifier chip is connected in parallel with the source terminal of the second full-bridge rectifier chip.

[0016] Optionally, in some embodiments, the full-bridge rectifier circuit module is further configured with a first bidirectional Zener diode and a second bidirectional Zener diode, wherein the first bidirectional Zener diode is connected in parallel with the first full-bridge rectifier chip, and the second bidirectional Zener diode is connected in parallel with the second full-bridge rectifier chip.

[0017] Optionally, in some embodiments, the full-bridge rectifier circuit module is further configured with a first capacitor and a second capacitor, the first capacitor and the second capacitor being connected in parallel to the output terminal of the full-bridge rectifier circuit module.

[0018] In addition, this utility model also provides a smartwatch that uses the above-mentioned non-polar magnetic charging structure.

[0019] The technical solution of this utility model has the following advantages or beneficial effects:

[0020] The non-polar magnetic charging structure provided by this utility model includes a middle frame, a circuit board, and a charging base. A first mounting base is provided on the side of the middle frame, and a first magnetic electrode is tightly mounted on the first mounting base. The first magnetic electrode is equipped with a first bracket, on which two first magnets are arranged symmetrically in the horizontal direction, and two first electrodes are arranged symmetrically in the vertical direction. The circuit board is installed inside the middle frame and integrates a full-bridge rectifier circuit module. The first electrodes are electrically connected to the full-bridge rectifier circuit module. A second mounting base is formed on the charging base, and a second magnetic electrode is tightly mounted on the second mounting base. The second magnetic electrode is equipped with a second bracket, on which two second magnets are arranged symmetrically in the horizontal direction, and two second electrodes are arranged symmetrically in the vertical direction. The first magnet and the second magnet have opposite magnetic properties. When the charging base is close to the middle frame, the first magnet attracts the second magnet, and the first electrode contacts the second electrode to conduct electricity. The output terminal of the full-bridge rectifier circuit module outputs a charging voltage of fixed polarity. The full-bridge rectifier circuit module ensures that regardless of the orientation of the second magnetic electrode connected to the first magnetic electrode, it outputs a power supply of fixed polarity to charge the battery. Furthermore, the first magnetic electrode is positioned on the side of the frame, allowing users to charge the watch without removing it. This self-adaptive charging polarity design eliminates the need for removing the watch or adjusting polarity, providing a convenient and quick charging experience. Attached Figure Description

[0021] Embodiments of the present invention will be described more fully with reference to the accompanying drawings. However, the accompanying drawings are for illustration and explanation only and do not constitute a limitation on the scope of the present invention.

[0022] Figure 1 This is a schematic diagram of the non-polar magnetic charging structure of this utility model;

[0023] Figure 2 This is an exploded view of the non-polar magnetic charging structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the first magnetic attraction electrode of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the charging base of this utility model;

[0026] Figure 5 This is a circuit diagram of the full-bridge rectifier circuit module of this utility model.

[0027] Illustration:

[0028] 1. Mid-frame; 2. Circuit board; 3. Charging base; 4. First mounting base; 5. First magnetic electrode; 6. First bracket; 7. First magnet; 8. First electrode; 9. Full-bridge rectifier circuit module; 10. Second mounting base; 11. Second magnetic electrode; 12. Second bracket; 13. Second magnet; 14. Second electrode; 15. First terminal post; 16. Second terminal post; 17. Bridge plate; 18. First power supply post; 19. Second power supply post; 20. First set of punch holes; 21. Second set of punch holes; 22. Stepped groove; 23. Third set of punch holes; 24. Fourth set of punch holes; 25. Annular protrusion; 26. Annular groove; 27. First full-bridge rectifier chip; 28. Second full-bridge rectifier chip; 29. ​​First bidirectional Zener diode; 30. Second bidirectional Zener diode; 31. First capacitor; 32. Second capacitor. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] In the description of this utility model, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] In the description of this utility model, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0033] like Figure 1-5 As shown, an embodiment of this utility model provides a non-polar magnetic charging structure, including a middle frame 1, a circuit board 2, and a charging base 3. A first mounting base 4 is provided on the side of the middle frame 1, and a first magnetic electrode 5 is tightly mounted on the first mounting base 4. The first magnetic electrode 5 is equipped with a first bracket 6, and two first magnets 7 are arranged laterally symmetrically on the first bracket 6. Two first electrodes 8 are arranged longitudinally symmetrically on the first bracket 6. The circuit board 2 is installed inside the middle frame 1, and a full-bridge rectifier circuit module 9 is integrated on the circuit board 2. The first electrodes 8 are electrically connected to the full-bridge rectifier circuit module 9. A second mounting base 10 is formed on the charging base 3. A second magnetic electrode 11 is tightly mounted on the second mounting base 10. The second magnetic electrode 11 is equipped with a second bracket 12. Two second magnets 13 are arranged laterally symmetrically on the second bracket 12, and two second electrodes 14 are arranged longitudinally symmetrically on the second bracket 12. The first magnet 7 and the second magnet 13 have opposite magnetic properties. When the charging base 3 is close to the middle frame 1, the first magnet 7 attracts the second magnet 13, and the first electrode 8 contacts the second electrode 14 to conduct electricity. The output terminal of the full-bridge rectifier circuit module 9 outputs a charging voltage of fixed polarity. Through the rectification circuit of the full-bridge rectifier circuit module 9, the second magnetic electrode 11, regardless of whether it is connected to the first magnetic electrode 5 in the forward or reverse direction, outputs a power supply of fixed polarity on the full-bridge rectifier circuit module 9 to charge the battery for the circuit board 2. Furthermore, the first magnetic electrode 5 is located on the side of the middle frame 1, allowing the user to charge the watch directly without removing it. It achieves the beneficial effect of adaptive charging polarity, allowing users to charge directly without removing the watch or calibrating the polarity, making charging connection convenient and quick, and improving the user experience.

[0034] Specifically, in this embodiment, the first magnetic electrode 5 is equipped with a first bracket 6. Two first magnets 7 are arranged laterally symmetrically on the first bracket 6, and two first electrodes 8 are arranged longitudinally symmetrically on the first bracket 6. The two first electrodes 8 are respectively a first post 15 and a second post 16. Both the first post 15 and the second post 16 are electrically connected to a full-bridge rectifier circuit module 9. The full-bridge rectifier circuit module 9 rectifies the AC power from the first post 15 and the second post 16 and stably outputs a fixed +5V charging voltage to the circuit board 2, allowing the circuit board 2 to charge the battery installed in the watch and form a circuit. Since the first magnetic electrode 5 is located on the side of the watch, this embodiment uses a bridge plate 17 to connect the first electrode 8 and the circuit board 2. The pins of the bridge plate 17 are inserted into the circuit board 2 and soldered together. The first electrode 8 is inserted into the bridge plate 17 and soldered together. In this embodiment, the two second electrodes 14 are respectively a first power supply post 18 and a second power supply post 19. The first power supply post 18 and the second power supply post 19 can be connected to the mains power via wires, which are stably located at the rear end of the second mounting base 10.

[0035] Furthermore, in this embodiment, the first bracket 6 can be made of silicone material. The first bracket 6 has a first set of die-cut holes 20 and a second set of die-cut holes 21. The first magnet 7 is tightly die-cut into the first set of die-cut holes 20, and the first electrode 8 is tightly die-cut into the second set of die-cut holes 21. Preferably, the second set of die-cut holes 21 is formed as stepped holes, and the front end of the first electrode 8 has a stepped groove 22, which is adapted to the stepped hole die-cut installation. During production and installation, the first bracket 6 is directly injection-molded with the first magnet 7 and the first electrode 8 through a die-cutting process to obtain an integral structure of the first magnetic electrode 5. Then, the first magnetic electrode 5 is fitted into the first mounting base 4 and secured by adhesive, thereby enabling the watch product to achieve a good waterproof effect, effectively achieving an IP66 waterproof rating.

[0036] Furthermore, in this embodiment, the second bracket 12 is formed with a third set of indented holes 23 and a fourth set of indented holes 24. The second magnet 13 is tightly indented and installed in the third set of indented holes 23, and the second electrode 14 is tightly indented and installed in the fourth set of indented holes 24. Preferably, the second bracket 12 is formed with an annular protrusion 25, and the second mounting base 10 is formed with an annular groove 26. The annular protrusion 25 is embedded in the annular groove 26 for tight installation. During production and installation, the second bracket 12 is directly injection molded with the second magnet 13 and the second electrode 14 through an indentation process to obtain the second magnetic electrode 11 with an integrated structure. Then, the second magnetic electrode 11 is connected to a wire and then directly injection molded with the second mounting base 10 through an indentation process to obtain the charging base 3 with an integrated structure.

[0037] Further, please refer to Figure 5In this embodiment, the full-bridge rectifier circuit module 9 is configured with a first full-bridge rectifier chip 27 (i.e., Q1) and a second full-bridge rectifier chip 28 (i.e., Q2). The first full-bridge rectifier chip 27 is connected to the first terminal 15, and the second full-bridge rectifier chip 28 is connected to the second terminal 16. The first full-bridge rectifier chip 27 and the second full-bridge rectifier chip 28 are connected in parallel and output a charging voltage. The input terminal of the first full-bridge rectifier chip 27 is connected in parallel to the control terminal of the second full-bridge rectifier chip 28, and the input terminal of the second full-bridge rectifier chip 28 is connected in parallel to the control terminal of the first full-bridge rectifier chip 27. The source terminal of the first full-bridge rectifier chip 27 is connected in parallel to the source terminal of the second full-bridge rectifier chip 28. Specifically, both the first full-bridge rectifier chip 27 and the second full-bridge rectifier chip 28 are MOS transistor chips, preferably PMOS transistor chips. The input terminals of the first full-bridge rectifier chip 27 and the second full-bridge rectifier chip 28 are both full-bridge rectifier modules. The input terminal of the first full-bridge rectifier chip 27 is connected in series with the first terminal 15, and the input terminal of the second full-bridge rectifier chip 28 is connected in series with the second terminal 16. The input terminal of the first full-bridge rectifier chip 27 is connected in parallel with the control terminal of the second full-bridge rectifier chip 28, and the input terminal of the second full-bridge rectifier chip 28 is connected in parallel with the control terminal of the first full-bridge rectifier chip 27. The S2 source terminals of the first full-bridge rectifier chip 27 and the second full-bridge rectifier chip 28 are connected in parallel and output a fixed +5V charging voltage Vcc. The S1 source terminals of the first full-bridge rectifier chip 27 and the second full-bridge rectifier chip 28 are connected in parallel and grounded (i.e., the negative terminal). In this circuit, the G1 control terminal of the first full-bridge rectifier chip 27 and the second rectifier chip are both high-level and low-level. The S1 source of the first full-bridge rectifier chip 27 and the second full-bridge rectifier chip 28 can only be turned on when the S1 source is low-level.

[0038] Furthermore, in this embodiment, when the first terminal 15 is connected to the positive terminal and the second terminal 16 is connected to the negative terminal, during the positive half-cycle of the power supply, the first terminal 15 receives a high level input and the second terminal 16 receives a low level input. At this time, the G1 control terminal of the first full-bridge rectifier chip 27 is cut off and the G2 control terminal is turned on. The D1 diode of the first full-bridge rectifier chip 27 is cut off and the D2 diode is turned on. The source of S1 receives a low level input, and the high level flows from the first terminal 15 into the D2 diode of the first full-bridge rectifier chip 27 for rectification. Then, a positive voltage Vcc is output from the source S2 of the first full-bridge rectifier chip 27; the control terminal G1 of the second full-bridge rectifier chip 28 is turned on and the control terminal G2 is turned off, the diode D1 of the second full-bridge rectifier chip 28 is turned on and the diode D2 is turned off, the source S1 input is low level, and there is no output from the source S2. The low level flows from the source S1 of the second full-bridge rectifier chip 28 into the second full-bridge rectifier chip 28, and then flows from the diode D1 of the second full-bridge rectifier chip 28 to the second terminal 16, thus forming a circuit. That is, after the first full-bridge rectifier chip 27 rectifies the power supply through the full-bridge rectifier module, it outputs a +5V charging voltage Vcc from its source S2. The charging voltage Vcc is connected to the positive terminal of the battery through the circuit board 2 to charge the battery. The negative terminal of the battery is grounded and connected to the source S1 of the second full-bridge rectifier chip 28, and then connected to the second terminal 16 through the diode D1 of the second full-bridge rectifier chip 28, thus forming a charging circuit. It should be noted that when the first terminal 15 is connected to the negative terminal and the second terminal 16 is connected to the positive terminal, during the negative half-cycle of the power supply, the first terminal 15 receives a high level and the second terminal 16 receives a low level. At this time, the rectification effect of the full-bridge rectifier circuit module 9 is the same as the rectification effect described above.

[0039] During the negative half-cycle of the power supply, the first terminal 15 receives a low level input, and the second terminal 16 receives a high level input. At this time, the G1 control terminal of the first full-bridge rectifier chip 27 is turned on and the G2 control terminal is turned off. The D1 diode of the first full-bridge rectifier chip 27 is turned on and the D2 diode is turned off. The source of S1 receives a low level input, and the source of S2 has no output. The low level flows from the source of S1 of the first full-bridge rectifier chip 27 into the first full-bridge rectifier chip 27, and then flows from the D1 diode of the first full-bridge rectifier chip 27 to the first terminal 15, thus forming a loop. The G1 control terminal of the second full-bridge rectifier chip 28 is turned off and the G2 control terminal is turned on. The D1 diode of the second full-bridge rectifier chip 28 is turned off and the D2 diode is turned on. The source of S1 receives a low level input, and the high level flows from the second terminal 16 into the D2 diode of the second full-bridge rectifier chip 28 for rectification. Then, a positive voltage Vcc is output from the source of S2 of the second full-bridge rectifier chip 28. The second full-bridge rectifier chip 28 rectifies the power supply through the full-bridge rectifier module and outputs a +5V charging voltage Vcc from its source S2. This charging voltage Vcc is connected to the positive terminal of the battery via circuit board 2, thus charging the battery. The negative terminal of the battery is grounded and connected to the source S1 of the first full-bridge rectifier chip 27, which in turn connects to the first terminal 15 via diode D1, forming a charging circuit. It should be noted that when the first terminal 15 is connected to the negative terminal and the second terminal 16 is connected to the positive terminal, during the positive half-cycle of the power supply, the first terminal 15 receives a low level input, and the second terminal 16 receives a high level input. In this case, the rectification effect of the full-bridge rectifier circuit module 9 is the same as described above. Therefore, regardless of whether the first terminal 15 and the second terminal 16 are connected in the correct orientation, the full-bridge rectifier circuit module 9 outputs a +5V charging voltage to power the battery via circuit board 2, achieving a polarity self-adaptive effect. This allows users to quickly charge the watch without needing to calibrate the power supply polarity, improving the user experience. Preferably, the charging voltage can be set according to design requirements and is not limited to +5V.

[0040] Furthermore, in this embodiment, the full-bridge rectifier circuit module 9 is also equipped with a first bidirectional Zener diode 29 and a second bidirectional Zener diode 30. The first bidirectional Zener diode 29 is connected in parallel with the first full-bridge rectifier chip 27, and the second bidirectional Zener diode 30 is connected in parallel with the second full-bridge rectifier chip 28. Specifically, one end of the first bidirectional Zener diode 29 is connected in parallel to the input terminal of the first full-bridge rectifier chip 27, and the other end is connected in parallel to the S1 source of the first full-bridge rectifier chip 27. One end of the second bidirectional Zener diode 30 is connected in parallel to the input terminal of the second full-bridge rectifier chip 28, and the other end is connected in parallel to the S1 source of the second full-bridge rectifier chip 28. Preferably, both the first bidirectional Zener diode 29 and the second bidirectional Zener diode 30 are TVS diodes, which provide anti-static and overvoltage protection, effectively protecting subsequent circuits on the circuit board 2 and preventing damage to the circuit board 2.

[0041] Furthermore, in this embodiment, the full-bridge rectifier circuit module 9 is also equipped with a first capacitor 31 and a second capacitor 32. The first capacitor 31 and the second capacitor 32 are connected in parallel to the output terminal of the full-bridge rectifier circuit module 9. The first capacitor 31 and the second capacitor 32 can filter and stabilize the charging voltage of the input circuit board 2, thereby improving the charging stability.

[0042] Furthermore, in this embodiment, when the non-polar magnetic charging structure is applied to smart products such as watches or bracelets, the full-bridge rectifier circuit module 9 ensures that the second magnetic electrode 11, regardless of its orientation when connected to the first magnetic electrode 5, outputs a power supply of fixed polarity to the circuit board 2 to charge the battery. The first magnetic electrode 5 is located on the side of the frame 1, allowing the user to charge the watch directly without removing it. This achieves the beneficial effect of adaptive charging polarity, enabling users to charge directly without removing the watch or calibrating the polarity, thus improving the user experience.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A non-polar magnetic charging structure, characterized in that, include: The middle frame has a first mounting base on its side, a first magnetic electrode is tightly mounted on the first mounting base, the first magnetic electrode is equipped with a first bracket, two first magnets are arranged laterally symmetrically on the first bracket, and two first electrodes are arranged longitudinally symmetrically on the first bracket. A circuit board is mounted inside the middle frame, and a full-bridge rectifier circuit module is integrated on the circuit board. The first electrode is electrically connected to the full-bridge rectifier circuit module. A charging stand, wherein a second mounting base is formed on the charging stand, a second magnetic electrode is tightly mounted on the second mounting base, the second magnetic electrode is configured with a second bracket, two second magnets are arranged laterally symmetrically on the second bracket, and two second electrodes are arranged longitudinally symmetrically on the second bracket; The first magnet and the second magnet have opposite magnetic properties. The charging base is close to the middle frame. The first magnet attracts the second magnet. The first electrode contacts the second electrode and conducts electricity. The output terminal of the full-bridge rectifier circuit module outputs a charging voltage of fixed polarity.

2. The non-polar magnetic charging structure as described in claim 1, characterized in that, The first bracket has a first set of bevel holes and a second set of bevel holes. The first magnet is tightly beveled and installed in the first set of bevel holes, and the first electrode is tightly beveled and installed in the second set of bevel holes.

3. The non-polar magnetic charging structure as described in claim 1, characterized in that, The second bracket has a third set of bevel holes and a fourth set of bevel holes. The second magnet is tightly beveled and installed in the third set of bevel holes, and the second electrode is tightly beveled and installed in the fourth set of bevel holes.

4. The non-polar magnetic charging structure as described in claim 1, characterized in that, The second bracket has an annular protrusion, and the second mounting base has an annular groove, with the annular protrusion fitting tightly into the annular groove.

5. The non-polar magnetic charging structure as described in claim 2, characterized in that, The second set of perforations is formed as a stepped hole, and a stepped groove is formed at the front end of the first electrode. The stepped groove is adapted to be installed with the stepped hole.

6. The non-polar magnetic charging structure as described in claim 1, characterized in that, The full-bridge rectifier circuit module is equipped with a first full-bridge rectifier chip and a second full-bridge rectifier chip. The first full-bridge rectifier chip is connected to a first terminal, and the second full-bridge rectifier chip is connected to a second terminal. The first full-bridge rectifier chip and the second full-bridge rectifier chip are connected in parallel and output the charging voltage.

7. The non-polar magnetic charging structure as described in claim 6, characterized in that, The input terminal of the first full-bridge rectifier chip is connected in parallel to the control terminal of the second full-bridge rectifier chip, the input terminal of the second full-bridge rectifier chip is connected in parallel to the control terminal of the first full-bridge rectifier chip, and the source terminal of the first full-bridge rectifier chip is connected in parallel to the source terminal of the second full-bridge rectifier chip.

8. The non-polar magnetic charging structure as described in claim 7, characterized in that, The full-bridge rectifier circuit module is also equipped with a first bidirectional Zener diode and a second bidirectional Zener diode. The first bidirectional Zener diode is connected in parallel with the first full-bridge rectifier chip, and the second bidirectional Zener diode is connected in parallel with the second full-bridge rectifier chip.

9. The non-polar magnetic charging structure as described in claim 8, characterized in that, The full-bridge rectifier circuit module is also equipped with a first capacitor and a second capacitor, which are connected in parallel to the output terminal of the full-bridge rectifier circuit module.

10. A smartwatch, characterized in that, Includes the non-polar magnetic charging structure as described in any one of claims 1-9.

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