Multi-channel AC / DC load box with intelligent control

Abstract

The utility model relates to a multichannel AC / DC load box with intelligent control, and relates to the field of electric power detection, and the multichannel AC / DC load box with intelligent control comprises a housing, a power supply module, a soft control module and a load module, and the power supply module is used for supplying power to the soft control module. The load module comprises a resistance tube module used for applying a load to equipment to be tested, and the soft control module comprises a temperature collector; a vertically-arranged heat insulation plate is fixedly connected into the shell and divides the interior of the shell into a high-temperature area and a low-temperature area, the resistance tube module is located in the high-temperature area, the other devices are located in the low-temperature area, and two temperature measuring probes are arranged on the temperature collector. The two temperature measuring probes respectively collect the temperature in the high-temperature area and the low-temperature area and feed back the temperature to the soft control module. The load box has the effect of improving the safety of the load box.

Description

Technical Field

[0001] The present application relates to the field of power detection, and in particular to a multi-channel AC / DC load box with intelligent control. Background Art

[0002] A load box is a device used to simulate the load of a power system. It is mainly used to test, calibrate and verify the performance of power equipment to improve the reliability and stability of the power system.

[0003] In the related art, the load box mainly includes a shell, a load circuit located inside the shell, and a control system. The load circuit is the core part of the load box, which is composed of components such as load resistors, filter capacitors, and inductors. These components can simulate various load conditions, such as constant resistance, constant current, constant power, etc., to test the performance of the power supply equipment. The design of the load circuit will be customized according to the test requirements to meet different test requirements. The control system is an important part of the load box, which includes power supply systems, relays, electronic switches and other components. The control system can achieve precise control of the load circuit, such as adjusting the load size, switching the load type, etc.

[0004] The load box in the related art places the load resistor and other components inside a casing. However, during operation, the load resistor is the main component that generates heat, so the regional temperature of the load resistor is very high, which can easily cause damage or failure of other electronic components, thus seriously affecting the service life of the load box, and even causing danger in extreme cases. Summary of the invention

[0005] In order to reduce the adverse effects of load resistor heating on other electronic devices, the present application provides a multi-channel AC / DC load box with intelligent control.

[0006] The multi-channel AC / DC load box with intelligent control provided in this application adopts the following technical solution:

[0007] A multi-channel AC / DC load box with intelligent control, comprising a housing, a power supply module, a soft control module and a load module, wherein the power supply module is used to supply power to the soft control module, the load module comprises a resistor tube module for applying a load to a device under test, and the soft control module comprises a temperature collector;

[0008] A vertically arranged heat insulation board is fixedly connected to the inside of the shell, and the heat insulation board divides the inside of the shell into a high temperature zone and a low temperature zone. The resistor tube module is located in the high temperature zone, and the remaining components are located in the low temperature zone. Two temperature measuring probes are provided on the temperature collector, and the two temperature measuring probes respectively collect the temperatures in the high temperature zone and the low temperature zone and feed them back to the soft control module.

[0009] Optionally, the power supply module includes a mains input interface, a power supply input circuit breaker, an emergency stop switch and a DC 24V power supply module, and the mains input interface, the power supply input circuit breaker, the emergency stop switch and the DC 24V power supply module are connected in series and electrically connected in sequence, and the DC 24V power supply module is electrically connected to the soft control module.

[0010] Optionally, the load module includes multiple DC loading circuits and AC loading circuits.

[0011] Optionally, the load-pulling circuit includes wiring terminals, a load input circuit breaker and a relay module, and the wiring terminals, load input circuit breaker and relay module are connected in series and electrically connected in sequence. The resistor tube module includes multiple resistor tubes with different resistance values, and the multiple resistor tubes with different resistance values ​​are connected in parallel. The relay module is used to control the parallel connection of resistor tubes with different resistance values.

[0012] Optionally, the soft control module includes a touch screen and a voltage and current collector, the collection end of the voltage and current collector is communicatively connected to the load circuit, the output end of the voltage and current collector is communicatively connected to the touch screen, and the relay module is communicatively connected to the touch screen.

[0013] Optionally, an audible and visual alarm is provided on the housing, and the audible and visual alarm is communicatively connected to the touch screen.

[0014] Optionally, a heat dissipation fan is provided at the bottom of the high temperature area of ​​the casing.

[0015] Optionally, the shell is provided with heat dissipation vents on both side plates and the upper cover plate.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. This application divides the load box into a high temperature zone and a low temperature zone by setting a heat insulation board inside the shell, so that the heat generated by the load resistor is mainly concentrated in the high temperature zone, while other temperature-sensitive electronic devices are located in the low temperature zone, which significantly reduces the impact of high temperature on other electronic devices and is conducive to extending the service life of the load box. In addition, the load box is designed to have a low temperature zone and a high temperature zone, and each zone is equipped with a temperature measuring probe to monitor the temperature of the high temperature zone and the low temperature zone respectively, and feed the data back to the soft control module. In this way, the soft control module can intelligently adjust the load size or take other measures according to the temperature data to maintain the internal temperature of the load box within a safe range. When the soft control module detects that the temperature of any area exceeds the preset dangerous value, the soft control system will automatically trigger a shutdown mechanism to turn off all loads. This automatic shutdown function greatly improves the safety of the load box because it can prevent equipment damage or fire caused by overheating when unattended, further enhancing safety.

[0018] 2. This application includes multiple DC load circuits and AC load circuits through the load module. Each load circuit can control the parallel connection of resistors with different resistance values ​​through the relay module, thereby realizing multi-channel and multi-mode AC and DC load simulation. This design enables the load box to simulate more complex power system load conditions and meet more diverse testing needs. At the same time, the combination of the touch screen and the voltage and current collector allows operators to easily set and monitor test parameters, improving the convenience and accuracy of the test.

[0019] 3. The heat dissipation fan at the bottom of the high temperature zone of the load box of the present application and the heat dissipation vents on the two side panels of the shell and the upper cover plate further improve the heat dissipation efficiency and ensure the stable operation of the load box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the load box according to an embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of the overall internal structure of the load box according to an embodiment of the present application;

[0022] Figure 3 is a circuit diagram of a power supply module of a load box according to an embodiment of the present application;

[0023] Figure 4 It is a circuit diagram of a load module of a load box according to an embodiment of the present application.

[0024] Explanation of the reference numerals: 1. Shell; 11. Heat insulation board; 12. High temperature zone; 13. Low temperature zone; 14. Mounting plate; 15. Sound and light alarm; 16. Cooling fan; 17. Folding handle; 18. Universal wheel; 2. Power supply module; 21. AC input interface; 22. Power input circuit breaker; 23. Emergency stop switch; 24. DC 24V power supply module; 3. Soft control module; 31. Touch screen; 32. Voltage and current collector; 33. Temperature collector; 4. Load module; 41. Terminal block; 42. Load input circuit breaker; 43. Relay module; 44. Resistor tube module; 45. RC arc extinguisher. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 This application is described in further detail.

[0026] The present application embodiment discloses a multi-channel AC / DC load box with intelligent control. Figure 1-4 A multi-channel AC / DC load box with intelligent control includes a housing 1, a power supply module 2, a soft control module 3 and a load module 4.

[0027] Reference Figure 1 , Figure 2 and Figure 3The power supply module 2 includes a mains input interface 21, a power supply input circuit breaker 22, an emergency stop switch 23 and a DC 24V power supply module 24 which are connected in series and electrically connected in sequence.

[0028] Reference Figure 2 , Figure 3 and Figure 4 The load module 4 includes multiple DC load circuits and AC load circuits, and in this embodiment, includes 6 AC load circuits and 5 DC load circuits. In other embodiments, the number of DC load circuits and AC load circuits can be selected according to the requirements to be tested, and their number is not a limitation to this application.

[0029] Reference Figure 2 , Figure 3 and Figure 4 The load circuit includes a terminal block 41, a load input circuit breaker 42 and a relay module 43 which are connected in series and electrically connected in sequence. The load circuit also includes a resistor tube module 44. The resistor tube module 44 includes a plurality of resistor tubes with different resistance values. The plurality of resistor tubes with different resistance values ​​are connected in parallel. The relay module 43 is electrically connected to the resistor tube. The relay module 43 is used to control the parallel connection of resistor tubes with different resistance values.

[0030] Reference Figure 1 , Figure 3 and Figure 4 The soft control module 3 includes a touch screen 31, a voltage and current collector 32 and a temperature collector 33. The collection end of the voltage and current collector 32 is connected to the load circuit, the output end of the voltage and current collector 32 is connected to the touch screen 31, and the input end of the relay module 43 is connected to the touch screen 31. The input end of the temperature collector 33 is connected to the touch screen 31.

[0031] Reference Figure 2 , Figure 3 and Figure 4 , a vertically arranged heat insulation board 11 is fixedly connected inside the shell 1, and the heat insulation board 11 divides the shell 1 into a high temperature zone 12 and a low temperature zone 13. The resistor tube module 44 is located in the high temperature zone 12, and the multiple resistor tubes of the resistor tube module 44 are distributed in layers at intervals in the high temperature zone 12. The shell 1 is provided with four layers of spaced-apart mounting plates 14 in the low temperature zone 13, and the relay module 43, the DC 24V power supply module 24 and the resistor-capacitor arc extinguisher 45 are fixed on the lower two layers of mounting plates 14, and the relay module 43 includes a 10A relay module 43, a 16A relay module 43 and a 30A relay module 43. The voltage and current collector 32 is installed on the upper two layers of mounting plates 14, and the voltage and current collector 32 includes a DC voltage and current collector 32 and an AC voltage and current collector 32.

[0032] Reference Figure 1 , Figure 2 and Figure 3 The temperature collector 33 is provided with two temperature measuring probes, which are respectively installed at the temperature collecting point of the high temperature zone 12 and the temperature collecting point of the low temperature zone 13. The two temperature measuring probes respectively collect the temperatures in the high temperature zone 12 and the low temperature zone 13 and feed them back to the touch screen 31.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The housing 1 is provided with an audible and visual alarm 15, which is in communication connection with the touch screen 31. The housing 1 is provided with a heat dissipation fan 16 at the bottom of the high temperature zone 12, and the heat dissipation fan 16 is powered by the power supply module 2. The housing 1 is provided with heat dissipation vents on the two side panels and the upper cover.

[0034] Reference Figure 1 and Figure 2 The touch screen 31 is installed on the front panel of the housing 1, the sound and light alarm 15 and the emergency stop switch 23 are installed on the front panel, and the mains input interface 21 and the wiring terminal 41 are installed at the bottom of the front panel of the housing 1. Folding handles 17 are fixedly connected to both sides of the housing 1, and universal wheels 18 are provided at the bottom of the housing 1. The folding handles 17 and the universal wheels 18 are used to facilitate the movement of the load box.

[0035] The implementation principle of a multi-channel AC / DC load box with intelligent control in the embodiment of the present application is as follows: when working, the mains input interface 21 is connected to an external power supply. The power supply or device to be tested is connected through the terminal block 41. After confirming that all settings are correct, press the start button to start the test. The load module 4 will control the parallel connection of resistors of different resistance values ​​through the relay module 43 according to the set parameters to simulate the required load conditions. The touch screen 31 will display the voltage, current and temperature data during the test in real time. The temperature collector 33 will monitor the temperature of the high temperature zone 12 and the low temperature zone 13 in real time, and feed the data back to the touch screen 31. If an abnormal situation occurs during the test (such as excessive temperature, excessive current, etc.), the touch screen 31 will trigger the sound and light alarm 15 to alarm. The user can take timely measures according to the alarm information, such as adjusting the load parameters, stopping the test, etc. After the test is completed, the user can stop the test through the touch screen 31. The load module 4 will disconnect from the device to be tested and return to the standby state.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-channel AC / DC load box with intelligent control, characterized in that: The device comprises a housing (1), a power supply module (2), a soft control module (3) and a load module (4), wherein the power supply module (2) is used to supply power to the soft control module (3), the load module (4) comprises a resistor tube module (44) used to apply a load to a device to be tested, and the soft control module (3) comprises a temperature collector (33); A vertically arranged heat insulation board (11) is fixedly connected to the inside of the housing (1), and the heat insulation board (11) divides the inside of the housing (1) into a high temperature zone (12) and a low temperature zone (13). The resistor tube module (44) is located in the high temperature zone (12), and the remaining components are located in the low temperature zone (13). Two temperature measuring probes are provided on the temperature collector (33), and the two temperature measuring probes respectively collect the temperatures in the high temperature zone (12) and the low temperature zone (13) and feed them back to the soft control module (3).

2. The multi-channel AC / DC load box with intelligent control according to claim 1, characterized in that: The power supply module (2) comprises a mains input interface (21), a power input circuit breaker (22), an emergency stop switch (23) and a 24V DC power supply module (24); the mains input interface (21), the power input circuit breaker (22), the emergency stop switch (23) and the 24V DC power supply module (24) are sequentially connected in series and electrically connected; and the 24V DC power supply module (24) is electrically connected to the soft control module (3).

3. The multi-channel AC / DC load box with intelligent control according to claim 1, characterized in that: The load module (4) comprises a plurality of direct current loading circuits and alternating current loading circuits.

4. The multi-channel AC / DC load box with intelligent control according to claim 3, characterized in that: The load-pulling circuit comprises a wiring terminal (41), a load input circuit breaker (42) and a relay module (43); the wiring terminal (41), the load input circuit breaker (42) and the relay module (43) are sequentially connected in series and electrically connected; the resistor tube module (44) comprises a plurality of resistor tubes with different resistance values, the plurality of resistor tubes with different resistance values ​​are connected in parallel, and the relay module (43) is used to control the parallel connection of the resistor tubes with different resistance values.

5. The multi-channel AC / DC load box with intelligent control according to claim 4, characterized in that: The soft control module (3) comprises a touch screen (31) and a voltage and current collector (32); a collection end of the voltage and current collector (32) is communicatively connected to a load circuit; an output end of the voltage and current collector (32) is communicatively connected to the touch screen (31); and the relay module (43) is communicatively connected to the touch screen (31).

6. The multi-channel AC / DC load box with intelligent control according to claim 5, characterized in that: The housing (1) is provided with an audible and visual alarm (15), and the audible and visual alarm (15) is communicatively connected to the touch screen (31).

7. The multi-channel AC / DC load box with intelligent control according to claim 1, characterized in that: The housing (1) is provided with a heat dissipation fan (16) at the bottom of the high temperature zone (12).

8. The multi-channel AC / DC load box with intelligent control according to claim 1, characterized in that: The housing (1) is provided with heat dissipation vents on both side plates and the upper cover plate.

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