Electric vehicle charger

Abstract

The utility model relates to the technical field of chargers, in particular to an electric vehicle charger which comprises a machine box, a connecting block is installed on the outer wall of one side of the machine box in a penetrating mode, an output line is fixedly installed on the outer wall of the connecting block, a connecting column is fixedly installed on the outer wall of the other side of the machine box, and an input line is fixedly installed on the outer wall of the connecting column. A circuit board is arranged in the machine box, a plug-in block is arranged in the machine box, and when the plug-in block is in butt joint with the connecting block, the output line, the input line, the connecting block, the connecting column, the plug-in block and the circuit board are communicated through a wire, so that power transmission is achieved; the displacement mechanism can enable the connecting block and the inserting block to be disconnected; and the detection mechanism can monitor the internal temperature of the machine box, when the internal temperature of the machine box is too high, the displacement mechanism can be triggered, in the machine box, the internal temperature of the machine box can be monitored by arranging the detection mechanism, and when the dimension is too high, a power supply can be automatically cut off.

Description

Technical Field

[0001] The utility model relates to the technical field of chargers, in particular to an electric vehicle charger. Background Art

[0002] Electric vehicles have now become one of our daily means of transportation. In order for electric vehicles to be used normally, the batteries of electric vehicles need to be charged repeatedly. Electric vehicle chargers are generally composed of a power plug, a main body and an output plug connected by wires. When charging, electric vehicles can drive to a designated charging pile for charging, and then insert the power plug of the charger into the charging pile, and insert the output plug at the other end into the charging socket under the electric vehicle seat.

[0003] When an electric vehicle charger is in the process, the user cannot promptly discover that the electric vehicle is fully charged, and thus cannot promptly remove the charger. As a result, it is very easy for the charger to explode or spontaneously combust due to the high temperature caused by the process, thus posing certain safety hazards and posing a certain threat to people's lives. Utility Model Content

[0004] The utility model provides an electric vehicle charger, which has the advantage of automatically cutting off the output power supply.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric vehicle charger, comprising: a machine box, a connecting block is installed through the outer wall of one side of the machine box, an output line is fixedly installed on the outer wall of the connecting block, a connecting column is fixedly installed on the outer wall of the other side of the machine box, an input line is fixedly installed on the outer wall of the connecting column, a circuit board is arranged inside the machine box, and a plug-in block is arranged inside the machine box, when the plug-in block and the connecting block are connected, the output line, the input line, the connecting block, the connecting column, the plug-in block, and the circuit board are connected through wires to realize power transmission; a displacement mechanism, the displacement mechanism can disconnect the connecting block and the plug-in block; a detection mechanism, the detection mechanism can monitor the internal temperature of the machine box, and when the internal temperature of the machine box is too high, the displacement mechanism can be triggered.

[0006] Optionally, the detection mechanism includes two assembly boxes symmetrically installed on the inner wall of the machine box, and slides are slidably installed inside the two assembly boxes. A piston rod is fixedly installed on the outer wall of the slide. A piston cavity is formed between the assembly box and the slide, and thermal expansion glue is provided inside the piston cavity.

[0007] Optionally, the displacement mechanism includes a flange fixedly mounted on the outer wall of the thermal expansion adhesive, a driving rod is slidably mounted on the outer wall of the flange, and an end of the driving rod is fixedly connected to the plug-in block.

[0008] Optionally, docking plates are slidably installed on the inner top and bottom of the machine box, and limit strips are symmetrically installed on the inner wall of the machine box. The two limit strips limit the docking plates horizontally, and the end of the piston rod is fixedly connected to the outer wall of the docking plate. A displacement unit is provided inside the machine box, and the displacement unit can displace the docking plate to its original position.

[0009] Optionally, the displacement unit includes a fixed block fixedly installed inside the machine box, and a second return spring is fixedly installed between the fixed block and the docking plate.

[0010] Optionally, a plurality of heat dissipation holes are formed through the outer wall of the machine box, and a plurality of connecting holes are formed through the outer wall of the docking plate, and when the docking plate is displaced, the connecting holes can be connected with the heat dissipation holes.

[0011] Optionally, a plurality of fixing columns are fixedly installed inside the machine box, a plurality of first return springs are provided between the circuit board and the inner wall of the machine box, and the fixing columns and the first return springs are coaxially designed.

[0012] Optionally, the connecting block and the connecting column are made of flexible rubber, and the outer wall of the connecting column is provided with a plurality of arc grooves.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When the charger is overcharged during use, the thermal expansion adhesive will expand due to the heat, causing the piston rod to move. When the piston rod moves to a certain position, the flange on the piston rod will abut against the drive rod, thereby driving the drive rod to move, so that the plug-in block 7 is disconnected from the connecting block 5, thereby cutting off the power supply.

[0015] 2. When the thermal expansion adhesive expands due to heat, the displacement of the piston rod can drive the displacement of the docking plate. When the docking plate moves to a certain position, the connecting holes on the docking plate will connect with the heat dissipation holes, thereby dissipating the heat inside the machine box. When the charger is not in use, the connecting holes and the heat dissipation holes are alternately misaligned, making the inside of the machine box airtight, which can prevent dust and debris from entering and damaging the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural diagram of the present utility model is shown;

[0017] Figure 2 This is a schematic diagram of the top structure of the present utility model;

[0018] Figure 3 Practical Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0019] Figure 4 Practical Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0020] Figure 5 This is a schematic diagram of the internal structure of the utility model.

[0021] In the figure: 1, machine box; 2, output line; 3, input line; 4, heat dissipation hole; 5, connection block; 6, connection column; 7, plug-in block; 8, fixing column; 9, first return spring; 11, circuit board; 12, docking plate; 13, limit strip; 14, fixing block; 15, assembly box; 16, drive rod; 17, piston rod; 18, flange; 19, thermal expansion glue; 20, slide plate; 21, second return spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the practical embodiment to clearly and completely describe the technical solution in the practical embodiment. Obviously, the described embodiment is only a part of the embodiment of the practical embodiment, not all of the embodiments. Based on the embodiment in the practical embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical embodiment.

[0023] See also Figures 1 to 5 The utility model provides a technical solution: an electric vehicle charger, comprising: a machine box 1, a connection block 5 is installed through the outer wall of one side of the machine box 1, an output line 2 is fixedly installed on the outer wall of the connection block 5, a connection column 6 is fixedly installed on the outer wall of the other side of the machine box 1, an input line 3 is fixedly installed on the outer wall of the connection column 6, a circuit board 11 is arranged inside the machine box 1, and a plug-in block 7 is arranged inside the machine box 1. When the plug-in block 7 is connected with the connection block 5, the output line 2, the input line 3, the connection block 5, the connection column 6, the plug-in block 7, and the circuit board 11 are connected through wires to realize power transmission; a displacement mechanism, the displacement mechanism can disconnect the connection block 5 and the plug-in block 7; a detection mechanism, the detection mechanism can monitor the internal temperature of the machine box 1, and when the internal temperature of the machine box 1 is too high, the displacement mechanism can be used to detect the temperature inside the machine box 1. The displacement mechanism is triggered. In this embodiment, by setting the connecting block 5 and the plug-in block 7, a complete passage can be formed when they are connected, thereby realizing the charging of the electric vehicle. When people use the charger to charge the electric vehicle, it is usually done at night. Therefore, when the electric vehicle is fully charged, people cannot find and remove the charger in time, which will cause the battery of the battery vehicle to be overcharged. When the battery is overcharged, it will generate heat and explode and self-ignite, which has certain safety hazards. The temperature inside the machine box 1 is detected by the detection mechanism. When the temperature is too high, the detection mechanism will trigger the displacement mechanism to work, so that the connecting block 5 and the plug-in block 7 are disconnected, thereby effectively preventing the spontaneous combustion or explosion caused by overcharging of the battery, thereby improving the safety of the charger.

[0024] Among them, the more preferred embodiment is that the detection mechanism includes two assembly boxes 15 symmetrically installed on the inner wall of the machine box 1, and the inside of the two assembly boxes 15 is slidably installed with a slide plate 20, and the outer wall of the slide plate 20 is fixedly installed with a piston rod 17. A piston cavity is formed between the assembly box 15 and the slide plate 20, and a thermal expansion glue 19 is provided inside the piston cavity. When the charger is used to charge the electric vehicle at night, people cannot remove the battery immediately after the battery is fully charged, which causes the battery to be overcharged, thereby causing spontaneous combustion or explosion. In the embodiment, when the battery is fully charged, the charger will continue to transmit electricity, so that the charger will heat up, which will cause the thermal expansion glue 19 in the piston cavity to expand due to the heat, thereby pushing the slide plate 20 to move, and the displacement of the slide plate 20 will drive the displacement of the piston rod 17, and the piston rod 17 will drive the displacement mechanism to move, thereby disconnecting the connecting block 5 and the plug-in block 7, thereby protecting the charger.

[0025] Among them, the more preferred embodiment is that the displacement mechanism includes a flange 18 fixedly installed on the outer wall of the thermal expansion adhesive 19, and a drive rod 16 is slidably installed on the outer wall of the flange 18. The end of the drive rod 16 is fixedly connected to the plug-in block 7. When the thermal expansion adhesive 19 expands due to heat, the slide plate 20 is displaced, thereby driving the piston rod 17 to displace at the same time. The outer wall of the piston rod 17 is fixedly installed with a flange 18. When the flange 18 is displaced to a certain position, it will abut against the drive rod 16 sliding on the piston rod 17, thereby driving the plug-in block 7 to displace, thereby releasing the docking with the connecting block 5, thereby realizing the power-off function and protecting the charger from overheating and explosion. The sliding distance of the drive rod 16 on the piston rod 17 is that when the charger is normally charged, it slides between the flange 18 and the drive rod 16, so that when the piston rod 17 returns to its original position, it can drive the drive rod 16 to retreat and displace at the same time.

[0026] Among the more preferred embodiments, a docking plate 12 is slidably installed on the inner top and the inner bottom of the machine box 1, and a limit strip 13 is symmetrically installed on the inner wall of the machine box 1. The two limit strips 13 limit the docking plate 12 horizontally, and the end of the piston rod 17 is fixedly connected to the outer wall of the docking plate 12. A displacement unit is provided inside the machine box 1, and the displacement unit can move the docking plate 12 to the original position.

[0027] Among them, the more preferred embodiment, the displacement unit includes a fixed block 14 fixedly installed inside the machine box 1, and a second return spring 21 is fixedly installed between the fixed block 14 and the docking plate 12. By setting the docking plate 12, during the normal charging process, the thermal expansion glue 19 may expand to a certain extent due to weather reasons, thereby causing the skateboard 20 to displace. By setting the displacement unit and the skateboard 20, the charger will not be disconnected under a certain heat, thereby causing charging interruption.

[0028] Among them, the more preferred embodiment is that the outer wall of the machine box 1 is penetrated with a plurality of heat dissipation holes 4, and the outer wall of the docking plate 12 is penetrated with a plurality of connecting holes. When the docking plate 12 is displaced, the connecting holes and the heat dissipation holes 4 can be connected. During the charging process of the charger, due to weather and other reasons, the charger will generate a certain amount of heat, thereby causing the heat expansion glue 19 to expand to a certain extent, thereby causing the slide plate 20 to displace, and under the push of the piston rod 17, the docking plate 12 is displaced to a certain extent, so that the connecting holes on the docking plate 12 and the heat dissipation holes 4 opened on the machine box 1 are connected to each other, thereby having a certain heat dissipation effect on the inside of the machine box 1 and improving the service life of the charger. When the charger is working, the inside of the machine box 1 is sealed by the action of the second reset spring 21, thereby preventing dust and debris from entering and causing damage to the charger.

[0029] Among them, in a more preferred embodiment, a plurality of fixing columns 8 are fixedly installed inside the machine box 1, and a plurality of first return springs 9 are provided between the circuit board 11 and the inner wall of the machine box 1. The fixing columns 8 and the first return springs 9 are coaxially designed. During the use of the electric vehicle, the charger is generally placed inside the electric vehicle, so that the battery vehicle may encounter bumpy roads during driving. By providing the first return springs 9 and the fixing columns 8, when the charger is impacted, it will have a certain shock-absorbing effect, thereby preventing the circuit board 11 inside the charger from being damaged by the impact, thereby increasing the service life of the charger.

[0030] Among the more preferred embodiments, the connecting block 5 and the connecting column 6 are made of flexible rubber, and the outer wall of the connecting column 6 is provided with a plurality of arc grooves. Since the output line 2 and the input line 3 are usually bent during the use of the charger, and the lines on both sides of the machine box are most likely to be damaged, the connecting block 5 and the connecting column 6 are made of flexible rubber and are not easily damaged. The arc grooves provided on the outer wall of the connecting column can provide a certain space for bending when the input line 3 is bent, thereby increasing the service life of the charger.

[0031] Working principle: When the electric vehicle charger is in use, when the charger is overcharged, the internally arranged heat-expanding adhesive 19 will expand when heated, thereby causing the piston rod 17 to be displaced, thereby abutting against the drive rod 16 through the flange 18 on the piston rod 17, driving the drive rod 16 to be displaced, and the displacement of the drive rod 16 can drive the displacement of the plug-in block 7 fixed at the end, thereby disconnecting the plug-in block 7 from the fixed block 5, thereby cutting off the power supply to the charger, thereby preventing the charger from burning or exploding due to overcharging.

[0032] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0033] 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. An electric vehicle charger, characterized in that: include: A machine box (1), wherein a connection block (5) is installed through the outer wall of one side of the machine box (1), an output line (2) is fixedly installed on the outer wall of the connection block (5), a connection column (6) is fixedly installed on the outer wall of the other side of the machine box (1), an input line (3) is fixedly installed on the outer wall of the connection column (6), a circuit board (11) is arranged inside the machine box (1), and a plug-in block (7) is arranged inside the machine box (1), and when the plug-in block (7) and the connection block (5) are connected, the output line (2), the input line (3), the connection block (5), the connection column (6), the plug-in block (7), and the circuit board (11) are connected through wires to achieve power transmission; A displacement mechanism, wherein the displacement mechanism is capable of disconnecting the connection block (5) and the plug-in block (7); The detection mechanism is capable of monitoring the internal temperature of the machine box (1), and when the internal temperature of the machine box (1) is too high, the displacement mechanism can be triggered.

2. The electric vehicle charger according to claim 1, characterized in that: The detection mechanism comprises two assembly boxes (15) symmetrically mounted on the inner wall of the machine box (1), a slide plate (20) being slidably mounted inside the two assembly boxes (15), a piston rod (17) being fixedly mounted on the outer wall of the slide plate (20), a piston cavity being formed between the assembly boxes (15) and the slide plate (20), and a thermal expansion adhesive (19) being arranged inside the piston cavity.

3. The electric vehicle charger according to claim 2, characterized in that: The displacement mechanism comprises a flange (18) fixedly mounted on the outer wall of the thermal expansion adhesive (19), a driving rod (16) being slidably mounted on the outer wall of the flange (18), and an end of the driving rod (16) being fixedly connected to the plug-in block (7).

4. The electric vehicle charger according to claim 3, characterized in that: The inner top and the inner bottom of the machine box (1) are both slidably mounted with docking plates (12); the inner wall of the machine box (1) is symmetrically mounted with limit strips (13); the two limit strips (13) horizontally limit the docking plate (12); the end of the piston rod (17) is fixedly connected to the outer wall of the docking plate (12); a displacement unit is provided inside the machine box (1); the displacement unit can displace the docking plate (12) to an original position.

5. The electric vehicle charger according to claim 4, characterized in that: The displacement unit comprises a fixed block (14) fixedly mounted inside the machine box (1), and a second return spring (21) is fixedly mounted between the fixed block (14) and the docking plate (12).

6. The electric vehicle charger according to claim 4, characterized in that: The outer wall of the machine box (1) is penetrated with a plurality of heat dissipation holes (4), and the outer wall of the docking plate (12) is penetrated with a plurality of communication holes, and when the docking plate (12) is displaced, the communication holes and the heat dissipation holes (4) can be connected.

7. The electric vehicle charger according to claim 2, characterized in that: A plurality of fixing columns (8) are fixedly installed inside the machine box (1), a plurality of first return springs (9) are arranged between the circuit board (11) and the inner wall of the machine box (1), and the fixing columns (8) and the first return springs (9) are coaxially designed.

8. The electric vehicle charger according to any one of claims 1 to 7, characterized in that: The connecting block (5) and the connecting column (6) are made of flexible rubber, and the outer wall of the connecting column (6) is provided with a plurality of arc-shaped grooves.

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