Charging pile load side connecting device for testing residual current of charging pile

Abstract

The utility model relates to a plug gun junction box for a residual current test of a charging pile. The plug gun junction box comprises a charging pile load side connecting device and a power supply side connecting device. The upper end of the load side connecting device is provided with a charging gun head socket for connecting a gun head part of a charging pile, the left side of each charging gun head socket is provided with a group of CP / S2 signal control switches, the middle of each charging gun head socket is provided with a change-over switch for controlling current to be input to the selected charging gun head socket, and a first glue line wiring hole below is used for connecting the load side of the residual current action tester; the upper end of the power supply side connecting device is a copper wire terminal used for connecting a charging pile powered by a wire, the middle is a single-phase socket used for connecting a charging pile powered by a single-phase plug, and a lower second glue wire wiring hole is used for connecting a power supply side of the residual current action tester. The problems of tedious operation and electrical potential safety hazards in the residual current operation characteristic test of the charging pile are solved, and the problem of how to quickly and safely install the charging pile in the residual current operation characteristic test is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical testing, in particular to a charging pile used for installing a gun plug base and a junction box connected to a residual current testing device in a residual current action characteristic test. Background Art

[0002] Before conducting the residual current action characteristic test of the charging pile in the laboratory, it is generally necessary to connect the power supply side and the load side of the charging pile to the residual current action tester. The power supply side of the charging pile may have various forms, including 10A / 16A single-phase plugs. Under traditional conditions, the plug-type power supply side is generally connected to the equipment using glue wires and crocodile clips, which poses certain electrical safety risks; or the wires with directly exposed live terminals are generally connected to the equipment through circuit breakers and glue wire transfers, which is cumbersome to operate. Although there is a plug box at the load end of the charging pile, the operation of the plug box is relatively simple, and it still needs to be connected to the equipment through the transfer of wires, circuit breakers, and glue wires, which is cumbersome. The entire pre-test preparation work requires too many transfers in the electrical connection between the sample and the equipment. Not only are the steps cumbersome, but it may take about 10 to 15 minutes to build the test circuit each time; at the same time, when auxiliary materials such as wires and glue wires are relatively messy and numerous, electrical safety problems such as misphase and missed connections are prone to occur. Summary of the invention

[0003] Aiming at the problems of complicated operation and electrical safety hazards in the residual current action characteristic test of charging piles, a charging pile adapter box which is easy to install and connected to the residual current test equipment is proposed to realize how to install the charging pile quickly and safely in the residual current action test.

[0004] The technical solution of the utility model is:

[0005] A plug-in junction box for residual current testing of a charging pile, comprising a charging pile load side connection device and a power supply side connection device;

[0006] The upper end of the load-side connection device is a charging gun head socket for connecting the gun head part of the charging pile. Each charging gun head socket has a set of CP / S2 signal control switches on the left side to control the working state of the charging pile. The middle is a conversion switch to control the current input to the selected charging gun head socket. The first rubber wire connection hole at the bottom is used to connect the load side of the residual current action tester;

[0007] The upper end of the power supply side connection device is a copper wire terminal for connecting to a charging pile powered by wires. In the middle are two 10A single-phase sockets for connecting to a charging pile powered by a single-phase plug. The second rubber wire connection hole at the bottom is used to connect to the power supply side of the residual current action tester.

[0008] Furthermore, the charging gun head socket is used to connect the charging gun head of the charging pile, the CP / S2 signal control switch is used to switch the charging and standby states of the charging pile, the conversion switch controls the switching of the power circuit between the two groups of charging gun head sockets, and the rubber wire wiring hole is used to connect the load side connection device and the residual current output side of the residual current tester.

[0009] Furthermore, the wire connection terminal is connected in series with the second glue wire connection hole; the single-phase socket is connected in series with the second glue wire connection holes A, N, PE, and is connected in series with the wire connection terminals A, N, PE.

[0010] Furthermore, the load-side connecting device and the power-side connecting device are both made of thermoplastic material and have a rectangular parallelepiped structure.

[0011] Furthermore, the charging pile load-side connection device and the power-side connection device are respectively provided with fixing screw holes and fixed with screws.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model can complete the quick-read connection between the charging pile and the residual current action tester; the charging pile of the wire power supply mode can be directly connected to the copper wire terminal, the charging pile of the plug charging mode can be directly inserted into the socket, the charging pile gun head can be directly inserted into the load side connection device, and the test port can be selected by switching the switch, and the working state of the charging pile can be controlled by the CP / S2 signal control switch; the glue wire terminal directly connects the two connection devices and the residual current tester through the glue wire for testing; the whole device is simple to operate, convenient and fast, and can greatly improve the installation and testing efficiency of the residual current test of the charging pile.

[0014] 1. The terminal block of the female connector of the rubber wire enables the connection devices on the load side and the power side of the charging pile to be connected to the residual current test equipment using a set of rubber wires.

[0015] 2. The connection device on the power supply side of the charging pile is equipped with two sets of three-phase circuit terminals with screws and pressing pieces, so that the power supply side of the charging pile can be directly connected to the connection device when it is in wire mode.

[0016] 3. The connection device on the power supply side of the charging pile has two sets of 10A single-phase sockets + one 16A single-phase socket adapter, which allows the charging pile power supply side to be directly connected to the connection device by inserting it into the socket when the power supply side is a single-phase plug.

[0017] 4. The load-side connection device consists of two national standard charging pile bases and a conversion switch. Two groups of tests can be performed simultaneously, and the conversion switch controls which pile is tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the structure of the load side connection device of the gun plug junction box of the utility model;

[0019] Figure 2 The utility model is a schematic diagram of the structure of the power supply side connection device of the gun plug junction box.

[0020] Figure ID:

[0021] 1. Load side connection device; 2. Charging gun head socket; 3. CP / S2 signal control switch; 4. Conversion switch; 5. First glue wire connection hole; 6. First fixing screw hole; 7. Power side connection device; 8. Copper wire terminal; 9. Single-phase socket; 10. Second glue wire connection hole; 11. Second fixing screw hole. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0023] like Figure 1 , 2 As shown, a charging pile residual current quick reading connection device provided in this embodiment includes a charging pile load side connection device 1 and a power supply side connection device 7;

[0024] The load side connection device 1 and the power side connection device 7 are both made of thermoplastic material and have a rectangular structure. The upper end of the load side connection device 1 is a charging gun head socket 2 for connecting the gun head part of the charging pile. Each charging gun head socket 2 has a set of CP / S2 signal control switches 3 on the left side to control the working state of the charging pile. The middle is a conversion switch 4 to control the current input to the selected charging gun head socket 2. The first rubber wire connection hole 5 at the bottom is used to connect the load side of the residual current action tester.

[0025] The charging gun head socket 2 is used to connect the charging gun head of the charging pile, the CP / S2 signal control switch 3 is used to switch the charging / standby state of the charging pile, the switching switch 4 controls the switching of the power circuit between the two groups of charging gun head sockets 2, and the first rubber wire wiring hole is used to connect the load side connection device 1 and the residual current output side of the residual current tester.

[0026] The upper end of the power supply side connection device 7 is a copper wire terminal 8 for connecting a charging pile powered by wires. In the middle are two 10A single-phase sockets 9 for connecting a charging pile powered by a single-phase plug. The second rubber wire connection hole 10 at the bottom is used to connect the power supply side of the residual current action tester.

[0027] The wire connection terminal 8 is connected in series with the second glue wire connection hole 10; the single-phase socket 9 is connected in series with the second glue wire connection hole 10A, N, PE, and is connected in series with the wire connection terminal 8A, N, PE.

[0028] The working principle of the utility model is:

[0029] First, insert the gun head of the charging pile into the charging gun head socket 2 of the load side connection device 1, and toggle the switch 4 to control the current input to the selected socket according to whether the charging gun head socket 2 is inserted left / right. Then, connect the power side of the charging pile, that is, the power supply terminal / socket, to the copper wire terminal 8 of the power side connection device 7 or the 10A single-phase socket 9 according to the power supply method, and then connect the glue wire connection hole of the power side connection device 7 to the power side of the residual current tester, output voltage to power on the charging pile, close the CP / S2 signal control switch 3 to make the charging pile enter the normal charging state, connect the load side connection device 1 to the load side of the residual current action tester, and output the residual current to make the charging pile act.

[0030] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A charging pile load side connection device for charging pile residual current test, characterized in that: It includes a charging pile load side connection device and a power supply side connection device; The upper end of the load-side connection device is a charging gun head socket for connecting the gun head part of the charging pile. Each charging gun head socket has a set of CP / S2 signal control switches on the left side to control the working state of the charging pile. The middle is a conversion switch to control the current input to the selected charging gun head socket. The first rubber wire connection hole at the bottom is used to connect the load side of the residual current action tester; The upper end of the power supply side connection device is a copper wire terminal for connecting to a charging pile powered by wires. In the middle are two 10A single-phase sockets for connecting to a charging pile powered by a single-phase plug. The second rubber wire connection hole at the bottom is used to connect to the power supply side of the residual current action tester.

2. The charging pile load side connection device for charging pile residual current test according to claim 1, characterized in that: The charging gun head socket is used to connect the charging gun head of the charging pile, the CP / S2 signal control switch is used to switch the charging and standby states of the charging pile, the conversion switch controls the switching of the power circuit between the two sets of charging gun head sockets, and the rubber wire wiring hole is used to connect the load side connection device and the residual current output side of the residual current tester.

3. The charging pile load side connection device for charging pile residual current test according to claim 1, characterized in that: The wire terminal is connected in series with the second glue wire connection hole; the single-phase socket is connected in series with the second glue wire connection holes A, N, PE, and connected in series with the wire terminal A, N, PE.

4. The charging pile load side connection device for charging pile residual current test according to claim 1, characterized in that: The load side connection device and the power side connection device are both made of thermoplastic material and have a rectangular structure.

5. The charging pile load side connection device for charging pile residual current test according to claim 1, characterized in that: The charging pile load side connection device and the power side connection device are respectively provided with fixing screw holes and fixed with screws.

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