Electric vehicle charger with heat dissipation device

Abstract

The present invention discloses an electric vehicle charger with a heat dissipation device, comprising a lower shell, a charger assembly plate fixedly connected to the upper side of the lower shell, a storage box fixedly connected to the left side of the top of the upper shell, a piston slidably connected to the inside of the storage box, a heat dissipation fan fixedly connected to the left side of the inner wall of the top of the upper shell, and a second spring fixedly connected to the left side of the inner wall of the bottom of the control box. In the present invention, rapid internal heat dissipation is achieved through heat dissipation fins, a heat dissipation fan and heat dissipation holes. The button cap is pressed to drive the piston to drive the connecting rod to open the box door, squeeze out the lubricant and drip it into the inside of the heat dissipation fan, extend the service life, and ensure the heat dissipation effect. When leakage occurs, the electromagnetic coil attracts the metal block and the slide plate to move right, so that the first alignment hole and the second alignment hole are aligned, and the aerosol fire extinguishing agent inside the control box flows out, preventing fire and explosion caused by leakage, and having higher safety.

Description

Technical Field

[0001] The invention relates to the field of electric vehicle chargers, and in particular to an electric vehicle charger with a heat dissipation device. Background Art

[0002] An electric vehicle charger is a charging device specially configured for the battery of an electric bicycle. The classification of chargers: with or without an industrial frequency (50 Hz) transformer can be divided into two categories. Freight tricycle chargers generally use chargers with industrial frequency transformers, which are large in size, heavy, and power-consuming, but reliable and cheap. Electric bicycles and electric motorcycles use so-called switching power supply chargers, which are power-saving and efficient, but easy to break. Commonly used switching power supply chargers are divided into two categories: half-bridge and single-excitation. Single-excitation chargers are further divided into forward and flyback. Half-bridge chargers have high cost and good performance and are often used in chargers with negative pulses. Single-excitation chargers have low cost and high market share. Chinese patent document CN103414219B discloses an electric vehicle charger, which cancels fan cooling, insulates the electronic components and circuit boards that constitute the electric vehicle charger function in a metal shell filled with insulating heat-conducting liquid, and uses the insulating heat-conducting liquid and air convection to dissipate heat, so that the heat conduction effect achieved is much better than that of a fan, and can also achieve the purpose of waterproof, dustproof and shockproof, reducing the damage of the electric vehicle charger caused by the use environment of the above-mentioned electric vehicle charger. However, when a large amount of liquid is filled inside the charger, the overall weight of the structure is large, which is not convenient to carry. Secondly, the structure is prone to aging over time, and the sealing will become worse and worse. The internal insulating heat-conducting liquid is easy to flow out, resulting in a decrease in the heat dissipation effect. Ordinary fans will also have the problem of poor heat dissipation effect due to structural aging as the use time increases. Moreover, if a short circuit occurs inside the charger, electric sparks may be generated and even fire and explosion may be caused, which needs to be improved.

[0003] Therefore, it is necessary to develop an electric vehicle charger with a heat dissipation device to solve at least one of the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an electric vehicle charger with a heat dissipation device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an electric vehicle charger with a heat dissipation device, comprising a lower shell, the top of the lower shell is connected to the upper shell by bolts, the tops of the left and right ends of the lower shell are fixedly connected to one end of the data cable, a charger assembly plate is fixedly connected to the upper side of the lower shell, a storage box is fixedly connected to the left side of the top of the upper shell, a piston is slidably connected to the inside of the storage box, a cooling fan is fixedly connected to the left side of the inner wall of the top of the upper shell, a control box is fixedly connected to the right side of the inner wall of the top of the upper shell, a second spring is fixedly connected to the left side of the inner wall of the bottom end of the control box, the right end of the second spring is fixedly connected to a slide plate, and the right end of the slide plate is fixedly connected to a metal block.

[0006] As a further description of the above technical solution:

[0007] The other end of the data line on the right is fixedly connected with an insulating sleeve, and the middle part of the front end of the insulating sleeve is fixedly connected with a first plug.

[0008] As a further description of the above technical solution:

[0009] The other end of the data line on the left is fixedly connected with a pull ring, and the middle part of the front end of the pull ring is fixedly connected with a second plug.

[0010] As a further description of the above technical solution:

[0011] A plurality of heat dissipation holes are evenly arranged at the bottom end of the lower shell body, and the inner walls of the heat dissipation holes are fixedly connected with filter screens.

[0012] As a further description of the above technical solution:

[0013] A heat dissipation fin is fixedly connected to the middle of the bottom end of the charger component board.

[0014] As a further description of the above technical solution:

[0015] The middle part of the top end of the piston is fixedly connected to one end of the insertion rod, and the other end of the insertion rod passes through the middle part of the top end of the storage box and is fixedly connected to the middle part of the bottom end of the button cap.

[0016] As a further description of the above technical solution:

[0017] The left and right sides of the top of the piston are connected to the left and right sides of the inner wall of the top of the storage box through a first spring, and a lubricant is arranged inside the storage box.

[0018] As a further description of the above technical solution:

[0019] The bottom end of the storage box passes through the upper shell and the top inner wall of the cooling fan and extends to the inside of the cooling fan. The right side of the bottom end of the storage box is rotatably connected to a box door, and the left side of the top end of the box door is connected to the left side of the bottom end of the piston through a connecting rod.

[0020] As a further description of the above technical solution:

[0021] Aerosol fire extinguishing agent is arranged inside the control box, a plurality of first alignment holes are evenly arranged in the middle of the bottom end of the control box, and a plurality of second alignment holes are evenly arranged inside the slide plate.

[0022] As a further description of the above technical solution:

[0023] An electromagnetic coil is fixedly connected to the right side of the inner wall at the bottom end of the control box, and the bottom end of the electromagnetic coil passes through the right side of the bottom end of the control box through a conductive sheet and is fixedly connected to the right side of the top end of the charger component board.

[0024] The present invention has the following beneficial effects:

[0025] 1. In the present invention, firstly, the heat dissipation area at the bottom of the charger component board is increased by heat dissipation fins, and rapid heat dissipation during operation can be achieved by cooperating with the heat dissipation fan and the heat dissipation holes. By pressing the button cap, the connecting rod is driven by the piston to open the box door, and the lubricant in the storage box is squeezed out and drips into the inside of the heat dissipation fan, thereby extending the service life of the heat dissipation fan and ensuring the heat dissipation effect. After completion, the first spring will reset the piston and the box door, which is simple and easy to use.

[0026] 2. In the present invention, when the charger component board leaks electricity, the current is conducted to the inside of the electromagnetic coil through the conductive sheet, causing it to generate magnetism. The electromagnetic coil attracts the metal block and the slide plate to move right, so that the first alignment hole and the second alignment hole are aligned, and the aerosol fire extinguishing agent inside the control box flows out, which can prevent the occurrence of fire or even explosion caused by electric sparks generated by leakage, and is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional schematic diagram of an electric vehicle charger with a heat dissipation device proposed by the present invention;

[0028] Figure 2 This is a schematic diagram of the interior of a middle and lower housing of an electric vehicle charger with a heat dissipation device proposed by the present invention;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0031] Legend:

[0032] 1. Lower shell; 2. Upper shell; 3. Data cable; 4. Insulating sleeve; 5. First plug; 6. Pull ring; 7. Second plug; 8. Charger component board; 9. Heat dissipation fins; 10. Heat dissipation holes; 11. Filter; 12. Cooling fan; 13. Storage box; 14. Piston; 15. First spring; 16. Insert rod; 17. Button cap; 18. Box door; 19. Connecting rod; 20. Lubricant; 21. Control box; 22. Aerosol fire extinguishing agent; 23. First alignment hole; 24. Second spring; 25. Slide plate; 26. Second alignment hole; 27. Metal block; 28. Electromagnetic coil; 29. ​​Conductive sheet. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] Reference Figure 1-4The present invention provides an electric vehicle charger with a heat dissipation device, comprising a lower shell 1, the top of the lower shell 1 is connected to an upper shell 2 by bolts, which is convenient for disassembly and assembly, the tops of the left and right ends of the lower shell 1 are fixedly connected to one end of a data line 3, a charger component board 8 is fixedly connected to the upper side of the lower shell 1, which is the main charging structure, a cooling fan 12 is fixedly connected to the left side of the inner wall of the top of the upper shell 2, which is the main heat dissipation structure, an insulating sleeve 4 is fixedly connected to the other end of the right data line 3 to increase insulation, a first plug 5 is fixedly connected to the middle of the front end of the insulating sleeve 4 to facilitate the input of AC power, a pull ring 6 is fixedly connected to the other end of the left data line 3 to facilitate plugging and unplugging, a second plug 7 is fixedly connected to the middle of the front end of the pull ring 6, a plurality of heat dissipation holes 10 are evenly arranged on the bottom end of the lower shell 1, and a filter screen 11 is fixedly connected to the inner wall of the heat dissipation hole 10 to reduce dust from entering the interior, and a heat dissipation fin 9 is fixedly connected to the middle of the bottom end of the charger component board 8 to increase the heat dissipation area.

[0037] Embodiment 2:

[0038] The difference between this embodiment and the above-mentioned embodiment lies in that: a storage box 13 is fixedly connected to the left side of the top of the upper shell 2 for storing lubricant 20, a piston 14 is slidably connected inside the storage box 13, the middle part of the top of the piston 14 is fixedly connected to one end of the insertion rod 16, the other end of the insertion rod 16 passes through the middle part of the top of the storage box 13 and is fixedly connected to the middle part of the bottom end of the button cap 17, so as to facilitate the extrusion of the lubricant 20, the left and right sides of the top of the piston 14 are connected to the left and right sides of the inner wall of the top of the storage box 13 through the first spring 15, so as to facilitate the reset of the piston 14 and the box door 18, the lubricant 20 is arranged inside the storage box 13 to lubricate the rotating shaft of the cooling fan 12 and extend the service life, the bottom end of the storage box 13 passes through the inner wall of the top of the upper shell 2 and the cooling fan 12 and extends to the inside of the cooling fan 12, the right side of the bottom end of the storage box 13 is rotatably connected to the box door 18, and the left side of the top of the box door 18 is connected to the left side of the bottom end of the piston 14 through the connecting rod 19, so as to facilitate the linkage and open the box door 18 when pressed.

[0039] Embodiment 3:

[0040] The difference between this embodiment and the above-mentioned embodiment lies in that: a control box 21 is fixedly connected to the right side of the inner wall at the top of the upper shell 2, and an aerosol fire extinguishing agent 22 is contained inside; a second spring 24 is fixedly connected to the left side of the inner wall at the bottom of the control box 21; a slide plate 25 is fixedly connected to the right end of the second spring 24, and the sliding and resetting of the slide plate 25 are completed; a metal block 27 is fixedly connected to the right end of the slide plate 25, which is convenient for the electromagnetic coil 28 to attract and complete the alignment of the two holes; an aerosol fire extinguishing agent 22 is arranged inside the control box 21; a plurality of first alignment holes 23 are evenly arranged in the middle of the bottom end of the control box 21; a plurality of second alignment holes 26 are evenly arranged inside the slide plate 25; after alignment, the internal aerosol fire extinguishing agent 22 flows out; an electromagnetic coil 28 is fixedly connected to the right side of the inner wall at the bottom end of the control box 21, and magnetism is generated when electricity is turned on; the bottom end of the electromagnetic coil 28 passes through the right side of the bottom end of the control box 21 through the conductive sheet 29 and is fixedly connected to the right side of the top end of the charger component board 8, which is convenient for current conduction when leakage occurs.

[0041] Working principle: First, the heat dissipation area at the bottom of the charger component board 8 is increased by the heat dissipation fins 9, and the heat dissipation fan 12 and the heat dissipation holes 10 can be used to achieve rapid heat dissipation during operation. By pressing the button cap 17, the piston 14 drives the connecting rod 19 to open the box door 18, and the lubricant 20 in the storage box 13 is squeezed out and drips into the inside of the heat dissipation fan 12, thereby extending the service life of the heat dissipation fan 12 and ensuring the heat dissipation effect. After completion, the first spring 15 will reset the piston 14 and the box door 18. When the charger component board 8 leaks electricity, the current is conducted to the inside of the electromagnetic coil 28 through the conductive sheet 29 to generate magnetism. The electromagnetic coil 28 attracts the metal block 27 and the slide plate 25 to move right, so that the first alignment hole 23 and the second alignment hole 26 are aligned, and the aerosol fire extinguishing agent 22 in the control box 21 flows out, which can prevent the occurrence of fire or even explosion caused by electric sparks generated by leakage.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric vehicle charger with a heat dissipation device, comprising a lower housing (1), characterized in that: The top of the lower shell (1) is connected to the upper shell (2) by bolts, the tops of the left and right ends of the lower shell (1) are fixedly connected to one end of the data line (3), the upper side of the lower shell (1) is fixedly connected to a charger assembly plate (8), the left side of the top of the upper shell (2) is fixedly connected to a storage box (13), the storage box (13) is slidably connected to the inside, the left side of the inner wall of the top of the upper shell (2) is fixedly connected to a cooling fan (12), the right side of the inner wall of the top of the upper shell (2) is fixedly connected to a control box (21), the left side of the inner wall of the bottom end of the control box (21) is fixedly connected to a second spring (24), the right end of the second spring (24) is fixedly connected to a slide plate (25), and the right end of the slide plate (25) is fixedly connected to a metal block (27); The control box (21) is provided with an aerosol fire extinguishing agent (22), a plurality of first alignment holes (23) are evenly arranged in the middle of the bottom end of the control box (21), and a plurality of second alignment holes (26) are evenly arranged in the slide plate (25); An electromagnetic coil (28) is fixedly connected to the right side of the inner wall at the bottom end of the control box (21); the bottom end of the electromagnetic coil (28) passes through the right side of the bottom end of the control box (21) through a conductive sheet (29) and is fixedly connected to the right side of the top end of the charger component board (8); The middle part of the top end of the piston (14) is fixedly connected to one end of the insertion rod (16), and the other end of the insertion rod (16) passes through the middle part of the top end of the storage box (13) and is fixedly connected to the middle part of the bottom end of the button cap (17); the left and right sides of the top end of the piston (14) are connected to the left and right sides of the inner wall of the top end of the storage box (13) through a first spring (15), and a lubricant (20) is provided inside the storage box (13).

2. The electric vehicle charger with a heat dissipation device according to claim 1, characterized in that: The other end of the data line (3) on the right side is fixedly connected to an insulating sleeve (4), and the middle part of the front end of the insulating sleeve (4) is fixedly connected to a first plug (5).

3. The electric vehicle charger with heat dissipation device according to claim 1, characterized in that: The other end of the data line (3) on the left side is fixedly connected to a pull ring (6), and the middle part of the front end of the pull ring (6) is fixedly connected to a second plug (7).

4. The electric vehicle charger with a heat dissipation device according to claim 1, characterized in that: A plurality of heat dissipation holes (10) are evenly arranged at the bottom end of the lower shell (1), and the inner walls of the heat dissipation holes (10) are fixedly connected with filter screens (11).

5. The electric vehicle charger with a heat dissipation device according to claim 1, characterized in that: A heat dissipation fin (9) is fixedly connected to the middle portion of the bottom end of the charger component plate (8).

6. The electric vehicle charger with heat dissipation device according to claim 1, characterized in that: The bottom end of the storage box (13) passes through the upper shell (2) and the top inner wall of the cooling fan (12) and extends into the interior of the cooling fan (12). The right side of the bottom end of the storage box (13) is rotatably connected to a box door (18). The left side of the top end of the box door (18) is connected to the left side of the bottom end of the piston (14) via a connecting rod (19).

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