Wireless high-voltage test box

Abstract

The utility model discloses a wireless high-voltage test box, and relates to the technical field of high-voltage test. The device comprises a device box, a Bluetooth time control switch and a new energy pre-charging contactor are installed in the device box, the new energy pre-charging contactor is connected with two test clamps through wires, and the new energy pre-charging contactor is used for controlling connection and disconnection of a circuit between the two test clamps. The low-voltage power supply module is used for providing a low-voltage power supply for the Bluetooth time control switch and the new energy pre-charging contactor, and when a tester remotely controls the mobile phone to enable the Bluetooth time control switch to be closed, a loop in which the Bluetooth time control switch, the new energy pre-charging contactor and the low-voltage power supply module are connected in series is switched on; by means of the mode that high-voltage connection is controlled through long-distance low voltage, the problem that dangerous situations occur during high-voltage connection is avoided, and meanwhile the Bluetooth time control switch has better anti-interference capacity compared with an internet-of-things switch due to the fact that the Bluetooth time control switch adopts the frequency modulation technology.

Description

Technical Field

[0001] The utility model relates to the technical field of high voltage testing, in particular to a wireless high voltage testing box. Background Art

[0002] In overvoltage or overcurrent tests in the fields of electric vehicles, charging equipment, photovoltaics, wind energy, energy storage, etc., the safety of experimenters must be considered, especially in high-voltage implantation tests of new energy vehicles. In order to avoid this situation, existing technologies mostly use remote control to effectively avoid the risk of electric shock, most of which are implemented wirelessly using IoT switches. Considering the stability of high-voltage implantation experiments of new energy vehicles (IoT switches are highly dependent on the strength of network signals, and the electromagnetic waves generated by high voltage may affect network signals, and there is often no network at the test site or environmental chamber), technicians in this field plan to design a wireless high-voltage test box that uses Bluetooth remote control to start remote experiments. Utility Model Content

[0003] The purpose of the utility model is to solve the problem of unstable signals in Internet of Things switches by adopting a wireless Bluetooth remote control method. The utility model provides a wireless high-voltage test box.

[0004] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0005] A wireless high-voltage test box comprises a device box, in which a Bluetooth time-controlled switch and a new energy pre-charging contactor are installed. The new energy pre-charging contactor is connected to two test clamps through a wire. The new energy pre-charging contactor is used to control the closing and opening of a circuit between the two test clamps. The device box also comprises a low-voltage power supply module for providing low-voltage power to the Bluetooth time-controlled switch and the new energy pre-charging contactor.

[0006] Furthermore, the low-voltage power supply module includes a lithium battery, which is connected in series with a Bluetooth time switch and a new energy pre-charging contactor through a wire, and a switch button is provided in the series circuit. The switch button is installed on the device box to control the circuit closure of the lithium battery, the Bluetooth time switch and the new energy pre-charging contactor.

[0007] Furthermore, the lithium battery is connected to a charging socket installed on the device box through a wire, and the charging socket is used to provide a charging connection between the lithium battery and an external power source.

[0008] Furthermore, it also includes a control signal light installed on the surface of the device box, and the control signal light is connected in parallel with the new energy pre-charging contactor and in series with the Bluetooth time-controlled switch.

[0009] Furthermore, an overhead honeycomb bottom plate is fixed to the inner bottom of the device box, and the Bluetooth time-controlled switch, new energy pre-charging contactor, and lithium battery are all installed on the overhead honeycomb bottom plate.

[0010] Furthermore, the side wall of the device box is configured with a threading hole, a metal waterproof connector is fixedly installed in the threading hole, and the wire connected to the test clamp passes through the metal waterproof connector.

[0011] The beneficial effects of the utility model are as follows:

[0012] In the utility model, when the tester remotely controls the mobile phone to close the Bluetooth time switch, the circuit in series of the Bluetooth time switch, the new energy pre-charging contactor and the low-voltage power supply module is connected, so that the high-voltage line between the two test clamps is connected. This method of connecting high voltage by remote low-voltage control avoids the problem of dangerous situations when high voltage is connected. At the same time, the Bluetooth time switch has better anti-interference ability than the Internet of Things switch because it adopts frequency modulation technology.

[0013] When the Bluetooth time-controlled switch of the utility model is closed, the control signal light is on, which means that the line is connected, and the high-voltage line between the two test clamps is also connected. The tester should not approach, which plays a warning and reminder role. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 It is the circuit diagram of the utility model;

[0017] Figure numerals: 1. Device box; 2. Bluetooth time control switch; 3. New energy pre-charging contactor; 4. Test clamp; 5. Low-voltage power supply module; 501. Lithium battery; 502. Switch button; 503. Charging socket; 6. Control signal light; 7. Overhead honeycomb bottom plate; 8. Wire threading hole; 9. Metal waterproof connector. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0019] The present application provides a wireless high-voltage test box, which is mainly used to solve the problem of unstable signals when using IoT switches to control the opening and closing of circuits in high-voltage implantation tests of new energy vehicles, and provides the following technical solutions. Figure 1-Figure 3 Make a detailed description: Embodiment 1:

[0020] A wireless high-voltage test box includes a device box 1, in which a Bluetooth time-controlled switch 2, a new energy pre-charging contactor 3, and a low-voltage power supply module 5 are installed, wherein the new energy pre-charging contactor 3 is connected to two test clamps 4 through a wire and is used to control the closing and opening of the circuit between the two test clamps 4 (the new energy pre-charging contactor 3 here belongs to the prior art, and its working principle is roughly that it can connect the two test clamps 4 after it is powered on, and when it is not powered on, the circuit between the two test clamps 4 is open), and the low-voltage power supply module 5 is used to provide low-voltage power to the Bluetooth time-controlled switch 2 and the new energy pre-charging contactor 3, and the Bluetooth time-controlled switch 2, the new energy pre-charging contactor 3, and the low-voltage power supply module 5 are connected in series In a circuit, the Bluetooth time switch 2 here has better anti-interference ability than the Internet of Things switch because it adopts frequency modulation technology. When in use, when the tester remotely controls the mobile phone to close the Bluetooth time switch 2 (the prior art is not elaborated in detail), the circuit in series of the Bluetooth time switch 2, the new energy pre-charging contactor 3, and the low-voltage power supply module 5 here is connected, so that the high-voltage line between the two test clamps 4 is connected. This method of controlling high voltage connection with low voltage at a long distance avoids the problem of dangerous situations when high voltage is connected. At the same time, regardless of whether there is a network at the test site, the mobile phone Bluetooth can be used to control the opening and closing of the Bluetooth time switch 2 (Bluetooth signal transmission does not require a network).

[0021] Embodiment 2:

[0022] This embodiment adds the following technical solutions on the basis of embodiment 1. The low-voltage power supply module 5 includes a lithium battery 501. The lithium battery 501 is connected in series with the Bluetooth time switch 2 and the new energy pre-charging contactor 3 through a wire, and a switch button 502 is provided in the series circuit. By providing the switch button 502, the ability to manually turn off the low-voltage circuit can be achieved. The lithium battery 501 is connected to a charging socket 503 installed on the device box 1 through a wire. The charging socket 503 is used to provide a charging connection between the lithium battery 501 and an external power source. The charging socket 503 can be used to connect the lithium battery 501 to an external charger to charge it.

[0023] Embodiment 3:

[0024] This embodiment optimizes the following technical solutions on the basis of embodiment 1, wherein the device box 1 is divided into a bottom box and a cover, and the bottom box and the cover are fastened together by bolts, wherein an overhead honeycomb bottom plate 7 is fixedly provided on the inner bottom of the bottom box, and the bottom of the overhead honeycomb bottom plate 7 is structured with reinforcing ribs and is fastened to the inner bottom of the device box 1 by bolts. The arrangement of the overhead honeycomb bottom plate 7 can make the core electrical components located therein be suspended to obtain a better heat dissipation environment, and the holes on the overhead honeycomb bottom plate 7 can be used for the passage of bolts to fix the electrical components, and at the same time, the side wall of the device box 1 is structured with a threading hole 8, and a metal waterproof connector 9 is fixedly installed in the threading hole 8, and the wire connecting the test clamp 4 passes through the metal waterproof connector 9. The metal waterproof connector 9 can be used to prevent external water droplets from entering the device box 1 along the wire connecting the test clamp 4.

[0025] Embodiment 4:

[0026] This embodiment adds the following technical solutions on the basis of Embodiment 1, and also includes a control signal light 6 installed on the surface of the device box 1. The control signal light 6 is connected in parallel with the new energy pre-charging contactor 3 and in series with the Bluetooth time switch 2. When the Bluetooth time switch 2 is closed, the control signal light 6 lights up, indicating that the line is connected, and the high-voltage line between the two test clamps 4 is also connected. The tester should not approach, which serves as a warning reminder.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wireless high voltage test box, comprising a device box (1), characterized in that: The device box (1) is provided with a Bluetooth time-controlled switch (2) and a new energy pre-charging contactor (3), wherein the new energy pre-charging contactor (3) is connected to two test clamps (4) via a wire, and the new energy pre-charging contactor (3) is used to control the closing and opening of a circuit between the two test clamps (4), and further comprises a low-voltage power supply module (5) for providing a low-voltage power supply to the Bluetooth time-controlled switch (2) and the new energy pre-charging contactor (3).

2. A wireless high voltage test box according to claim 1, characterized in that: The low-voltage power supply module (5) comprises a lithium battery (501), the lithium battery (501) being connected in series with a Bluetooth time-controlled switch (2) and a new energy pre-charging contactor (3) via a wire, and a switch button (502) being arranged in the series circuit, the switch button (502) being mounted on the device box (1) and used for controlling the closing of the circuit of the lithium battery (501), the Bluetooth time-controlled switch (2), and the new energy pre-charging contactor (3).

3. A wireless high voltage test box according to claim 2, characterized in that: The lithium battery (501) is connected to a charging socket (503) installed on the device box (1) via a wire, and the charging socket (503) is used to provide a charging connection between the lithium battery (501) and an external power source.

4. The wireless high voltage test box according to claim 1, characterized in that: It also includes a control signal light (6) mounted on the surface of the device box (1), wherein the control signal light (6) is connected in parallel with the new energy pre-charging contactor (3) and in series with the Bluetooth time-controlled switch.

5. The wireless high voltage test box according to claim 1, characterized in that: An overhead honeycomb bottom plate (7) is fixed to the inner bottom of the device box (1), and the Bluetooth time-controlled switch (2), the new energy pre-charging contactor (3), and the lithium battery (501) are all mounted on the overhead honeycomb bottom plate (7).

6. The wireless high voltage test box according to claim 1, characterized in that: The side wall of the device box (1) is provided with a wire threading hole (8), a metal waterproof connector (9) is fixedly installed in the wire threading hole (8), and a wire connected to the test clamp (4) passes through the inside of the metal waterproof connector (9).

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