Leakage protection structure of high-power charger

Abstract

The utility model relates to the technical field of charger leakage protection, in particular to a high-power charger leakage protection structure which comprises a charger body, one end of the charger body is provided with a first wire, one end, far away from the charger body, of the first wire is connected with a protection assembly, and one side of the protection assembly is provided with a second wire. The protection assembly comprises a box body, and a first wiring terminal, a first conducting strip, a second conducting strip, a rectifier, a coil body, a circuit board, a second wiring terminal, a welding block and a pull-in coil are arranged in the box body. The high-power charger can play a good role in electric leakage protection, the situation that the high-power charger still works under the condition of electric leakage is avoided, the safety of the high-power charger is further improved, a traditional electric leakage protector does not need to be additionally installed in the installation process of the charger, and the cost is reduced. The integration of the charger and the leakage protection structure is realized, and the installation work of a worker on the charger is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage protection of chargers, in particular to a leakage protection structure of a high-power charger. Background Art

[0002] A charger is a device that charges other electrical appliances. It adopts high-frequency power supply technology, uses intelligent dynamic adjustment charging technology, and utilizes power electronic semiconductor devices to convert alternating current with fixed voltage and frequency into direct current. It is generally composed of flexible circuit boards, electronic components, etc. It can be divided into industrial frequency machines and high-frequency machines according to the designed circuit operating frequency, and is widely used in various fields.

[0003] With the gradual popularization of new energy vehicles, the safety of car chargers has become particularly important. At present, after long-term overclocking of the charger, the inductance and resistance on the charger circuit board are prone to breakdown, which then causes the low-voltage circuit to be connected in series with the high-voltage circuit without passing through the high-frequency transformer, resulting in leakage. In severe cases, the charger may cause the car to spontaneously combust, which poses a certain safety hazard. Therefore, a high-power charger leakage protection structure is urgently needed to solve the above problem. Utility Model Content

[0004] Based on the deficiencies in the prior art mentioned in the above background technology, the utility model provides a leakage protection structure for a high-power charger.

[0005] The utility model overcomes the above technical problems by adopting the following technical solutions, specifically:

[0006] A high-power charger leakage protection structure comprises a charger body, one end of the charger body is provided with a first wire, and one end of the first wire away from the charger body is connected to a protection component;

[0007] A second wire is provided on one side of the protection component;

[0008] The protection assembly comprises a box body, and a first terminal, a first conductive sheet, a second conductive sheet, a rectifier, a coil body, a circuit board, a second terminal, a welding block, and a pull-in coil are arranged inside the box body;

[0009] The number of the second wiring terminals is two groups, and the two groups of the second wiring terminals are respectively connected to a neutral wire and a live wire, the neutral wire and the live wire are fixedly connected to the second conductive sheet through a welding block, one end of the second conductive sheet is in contact with one end of the first conductive sheet, and the neutral wire and the live wire are both wound through the coil body.

[0010] As a further solution of the utility model: one end of the second conductive sheet is fixedly connected to a connecting rod, one side of the connecting rod is fixedly connected to an iron cover, one end of the attraction coil is provided with a magnetic end, the magnetic end is located in the iron cover, and does not contact each other.

[0011] As a further solution of the utility model: a sliding groove is provided on the inner wall of the bottom of the box body, a sliding block is slidably connected inside the sliding groove, and the sliding block is fixedly connected to the connecting rod.

[0012] As a further solution of the utility model: a spring is fixedly connected to an inner wall of one side of the slide groove, and one end of the spring away from the inner wall of the slide groove is fixedly connected to an outer wall of one side of the sliding block.

[0013] As a further solution of the utility model: a threaded hole is opened on the top outer wall of the box body, the inner thread of the threaded hole is connected with a fixing bolt, and the box body is connected with a cover plate through the fixing bolt.

[0014] As a further solution of the utility model: a lever is fixedly connected to the top outer wall of the iron cover, a through slot is formed on the top of the cover plate, and the top end of the lever passes through the inside of the through slot.

[0015] After adopting the above structure, the utility model has the following advantages compared with the prior art: it can play a good role in leakage protection, avoiding the situation where the high-power charger still works in the event of leakage, further improving the safety of the high-power charger, and there is no need to install a traditional leakage protector during the installation of the charger, realizing the integration of the charger and the leakage protection structure, which facilitates the installation of the charger by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the box body of the utility model.

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0019] Figure 4 It is a schematic top view of the internal structure of the box body of the present utility model.

[0020] In the figure: 1. charger body; 2. first wire; 3. cover plate; 4. second wire; 5. box body; 6. through slot; 7. first terminal; 8. first conductive sheet; 9. second conductive sheet; 10. rectifier; 11. coil body; 12. circuit board; 13. second terminal; 14. welding block; 15. connecting rod; 16. slider; 17. slide slot; 18. spring; 20. lever; 21. iron cover; 22. magnetic end; 23. suction coil. DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0024] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0025] See also Figure 1 to Figure 4 In the embodiment of the utility model, the leakage protection structure of the high-power charger includes a charger body 1, one end of the charger body 1 is provided with a first wire 2, and the end of the first wire 2 away from the charger body 1 is connected to a protection component;

[0026] A second conductor 4 is provided on one side of the protection component;

[0027] The protection assembly includes a box body 5, and the box body 5 is provided with a first terminal 7, a first conductive sheet 8, a second conductive sheet 9, a rectifier 10, a coil body 11, a circuit board 12, a second terminal 13, a welding block 14, and a pull-in coil 23;

[0028] There are two groups of second wiring terminals 13, and the two groups of second wiring terminals 13 are respectively connected with a neutral wire and a live wire. The neutral wire and the live wire are fixedly connected to the second conductive sheet 9 through a welding block 14. One end of the second conductive sheet 9 is in contact with one end of the first conductive sheet 8. Both the neutral wire and the live wire are wound through the coil body 11, which can play a good role in leakage protection and avoid the situation where the high-power charger still works in the event of leakage, further improving the safety of the high-power charger. During the installation of the charger, there is no need to install a traditional leakage protector, which realizes the integration of the charger and the leakage protection structure, and facilitates the installation of the charger by the staff.

[0029] Preferably, one end of the second conductive sheet 9 is fixedly connected to a connecting rod 15, one side of the connecting rod 15 is fixedly connected to an iron cover 21, and one end of the attraction coil 23 is provided with a magnetic end 22, which is located in the iron cover 21 and does not contact each other, thereby enabling the charger body 1 to be in an open-circuit state, realizing the leakage protection function of the charger body 1 and providing higher safety.

[0030] Preferably, a slide groove 17 is provided on the inner wall of the bottom of the box body 5, and a slider 16 is slidably connected inside the slide groove 17. The slider 16 is fixedly connected to the connecting rod 15, which plays a good guiding and limiting role when the second conductive sheet 9 and the first conductive sheet 8 are separated and moved.

[0031] Preferably, a spring 18 is fixedly connected to an inner wall of one side of the slide groove 17 , and one end of the spring 18 away from the inner wall of the slide groove 17 is fixedly connected to an outer wall of one side of the slider 16 .

[0032] Preferably, a threaded hole is provided on the top outer wall of the box body 5 , and a fixing bolt is connected to the inner thread of the threaded hole. The box body 5 is connected to the cover plate 3 via the fixing bolt, thereby ensuring the sealing of the interior of the box body 5 .

[0033] Preferably, a lever 20 is fixedly connected to the top outer wall of the iron cover 21, and a through slot 6 is provided on the top of the cover plate 3. The top end of the lever 20 passes through the inside of the through slot 6, so that people can push the lever 20 to reset it after the leakage hazard is eliminated, connect the first conductive sheet 8 and the second conductive sheet 9, and enable the charger body 1 to continue charging.

[0034] Working principle: When leakage occurs in the charger body 1, the current of the neutral line return will decrease. At this time, the magnetic field inside the coil body 11 will be large and small. The large magnetic field minus the small magnetic field will cause the magnetic field to cut the coil body 11 and generate current. The current generated by the coil body 11 flows into the circuit board 12, causing the magnetic end 22 at one end of the attraction coil 23 to generate a strong magnetic attraction. At this time, the magnetic end 22 will adsorb the iron cover 21 at its end, so the iron cover 21 will drive the connecting rod 15 and the two groups of second conductive sheets 9 to move horizontally, thereby separating the second conductive sheet 9 from the first conductive sheet 8. Therefore, the charger body 1 can be in an open circuit state, realizing the leakage protection function of the charger body 1, and having higher safety.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A high-power charger leakage protection structure, comprising a charger body (1), characterized in that: A first wire (2) is provided at one end of the charger body (1), and a protection component is connected to an end of the first wire (2) away from the charger body (1); A second conductor (4) is provided on one side of the protection component; The protection component comprises a box body (5), wherein a first wiring terminal (7), a first conductive sheet (8), a second conductive sheet (9), a rectifier (10), a coil body (11), a circuit board (12), a second wiring terminal (13), a welding block (14), and a pull-in coil (23) are arranged inside the box body (5); The number of the second wiring terminals (13) is two groups, and the two groups of the second wiring terminals (13) are respectively connected to a neutral wire and a live wire, the neutral wire and the live wire are fixedly connected to the second conductive sheet (9) via a welding block (14), one end of the second conductive sheet (9) is in contact with one end of the first conductive sheet (8), and the neutral wire and the live wire are both wound and passed through the coil body (11).

2. The leakage protection structure of a high-power charger according to claim 1, characterized in that: One end of the second conductive sheet (9) is fixedly connected to a connecting rod (15), one side of the connecting rod (15) is fixedly connected to an iron cover (21), one end of the attraction coil (23) is provided with a magnetic end (22), the magnetic end (22) is located on the iron cover (21), and the two ends do not contact each other.

3. The leakage protection structure of a high-power charger according to claim 2 is characterized in that: A sliding groove (17) is provided on the inner wall of the bottom of the box body (5), a sliding block (16) is slidably connected inside the sliding groove (17), and the sliding block (16) is fixedly connected to the connecting rod (15).

4. The leakage protection structure of a high-power charger according to claim 3 is characterized in that: A spring (18) is fixedly connected to an inner wall of one side of the slide groove (17), and one end of the spring (18) away from the inner wall of the slide groove (17) is fixedly connected to an outer wall of one side of the slider (16).

5. The leakage protection structure of a high-power charger according to claim 4, characterized in that: A threaded hole is provided on the top outer wall of the box body (5), a fixing bolt is connected to the inner thread of the threaded hole, and the box body (5) is connected to the cover plate (3) via the fixing bolt.

6. The leakage protection structure of a high-power charger according to claim 5, characterized in that: A lever (20) is fixedly connected to the top outer wall of the iron cover (21), a through slot (6) is provided on the top of the cover plate (3), and the top end of the lever (20) passes through the inside of the through slot (6).

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