APOW power panel detection device

By designing the APOW power board detection device, using electronic load modules, power supply voltage monitoring modules and control modules, comprehensive testing of the power board is achieved, solving the problem of lack of detection devices in the existing technology, and providing fast and accurate quality evaluation and control.

CN223296114UActive Publication Date: 2025-09-02CHONGQING YUECHUANG PETROLEUM DRILLING & PROD ENG CO LTD
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Patent Information

Application Number
CN202422753807.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-11
Publication Date
2025-09-02
Estimated Expiration
2034-11-11

AI Technical Summary

Technical Problem

The lack of performance detection devices for APOW power supply boards in the prior art, resulting in the inability to effectively evaluate and ensure the quality and performance of the power supply boards.

Method used

An APOW power supply board detection device is designed, including an electronic load module, a power supply voltage monitoring module and an electronic load control module. Through the electronic load module, the power supply to be tested is constant at a fixed current value. The power supply voltage monitoring module detects the voltage size and emits light indicators when it is lower than the set value. The electronic load control module controls the switch of the electronic load to achieve comprehensive testing.

Benefits of technology

It can quickly and accurately evaluate the performance and quality of the power board, and is suitable for the testing and quality control of the inverter APOW power board, providing reliable test results, and supporting the research and development, production and maintenance of the power board.

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Abstract

The utility model discloses an APOW power panel detection device, which relates to the field of detection and comprises an electronic load module used as an electronic load to enable a power supply to be detected to be constant at a fixed current value; the power supply voltage monitoring module is used for detecting the voltage of the to-be-detected power supply and giving out light for indication when the voltage of the to-be-detected power supply is lower than a set value; the electronic load control module is used for controlling whether an electronic load is turned off; compared with the prior art, the utility model has the beneficial effects that the performance and the quality of the power panel can be effectively evaluated and ensured, and the detection device can comprehensively test the power panel; the power panel can be quickly screened, and an accurate and reliable test result can be provided; the method is suitable for testing and quality control of APOW power panels of various frequency converters; the method has important significance in practical application, and can provide effective technical support for research, development, production and maintenance of the power panel.
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Description

Technical Field

[0001] The utility model relates to the field of detection, in particular to an APOW power board detection device. Background Art

[0002] The APOW power board provides working power for each board in the ACS800 inverter, such as DC ±24V power supply and DC12V power supply. The input power of the power board is DC800--1000V, with a load capacity of 0.2A. For example, the structure of the APOW-01C power board in the APOW power board is as follows: Figure 1 As shown, X3 / X4 pins share DC24V power supply with a load capacity of 0.3Amax; X2:1, X2:2 pins, DC12V power supply, load capacity of 0.3Amax; X2:6, X2:7 pins, DC24V- power supply, load capacity of 0.3Amax; X2:8, X2:7 pins, DC24V+ power supply, load capacity of 5Amax.

[0003] In the existing technology, there is a lack of devices for detecting the performance of APOW power boards, which needs to be improved. Utility Model Content

[0004] The purpose of the present invention is to provide an APOW power board detection device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An APOW power board detection device, comprising:

[0007] The electronic load module is used as an electronic load to keep the power supply under test at a constant current value;

[0008] The power supply voltage monitoring module is used to detect the voltage of the power supply to be tested. When the voltage of the power supply to be tested is lower than the set value, it will light up to indicate;

[0009] Electronic load control module, used to control whether the electronic load is turned off;

[0010] The electronic load control module is connected to the electronic load module, and the electronic load module is connected to the power supply voltage monitoring module;

[0011] The electronic load module includes:

[0012] A reference voltage unit is used to obtain a reference voltage and output the reference voltage to the constant current acquisition unit after voltage division;

[0013] The constant current acquisition unit is used to obtain a fixed current value based on the divided reference voltage and the fixed resistor, so that the power supply under test is kept constant at a fixed current value;

[0014] The reference voltage unit is connected to the constant current acquisition unit.

[0015] As a further solution of the present invention: the reference voltage unit includes a voltage regulator TL431, a capacitor C4, a resistor R2, and a potentiometer RP1. The negative pole of the voltage regulator TL431 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to a 12V voltage, the positive pole of the voltage regulator TL431 is grounded, the reference pole of the voltage regulator TL431 is connected to one end of the capacitor C4, one end of the resistor R2, the power supply voltage monitoring module, and the negative pole of the voltage regulator TL431, the other end of the capacitor C4 is grounded, the other end of the resistor R2 is connected to one end of the potentiometer RP1, the other end of the potentiometer RP1 is grounded, the sliding end of the potentiometer RP1 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the constant current acquisition unit.

[0016] As a further solution of the present utility model: the constant current acquisition unit includes an amplifier U1A, a MOS tube Q1, and a resistor R7. The non-inverting end of the amplifier U1A is connected to the reference voltage unit, the inverting end of the amplifier U1A is connected to the electronic load control module, one end of the capacitor C3, and one end of the resistor R5. The other end of the resistor R5 is connected to the S pole of the MOS tube Q1 and one end of the resistor R7. The other end of the resistor R7 is grounded. The output end of the amplifier U1A is connected to the other end of the capacitor C3 and one end of the resistor R4. The other end of the resistor R4 is connected to the G pole of the MOS tube Q1. The D pole of the MOS tube Q1 is connected to the APOW power board through the interface J3.

[0017] As a further solution of the present invention: the electronic load control module includes a switch S1, one end of the switch S1 is connected to a 12V voltage, the other end of the switch S1 is connected to the anode of a diode D1, and the cathode of the diode D1 is connected to the inverting terminal of the amplifier U1A.

[0018] As a further solution of the present utility model: the power supply voltage monitoring module includes an amplifier U1B, a potentiometer RP2, and a diode D13. The non-inverting end of the amplifier U1B is connected to the electronic load module, the inverting end of the amplifier U1B is connected to one end of the potentiometer RP2 and one end of the resistor R13, the other end of the resistor R13 is grounded, the other end of the potentiometer RP2 is connected to the APOW power supply board through the interface J3, the output end of the amplifier U1B is connected to one end of the resistor R11, the other end of the resistor R11 is connected to the positive electrode of the diode D13, and the negative electrode of the diode D13 is grounded.

[0019] Compared with the existing technology, the beneficial effects of the present invention are: the present invention can effectively evaluate and ensure the performance and quality of the power board, and the detection device can comprehensively test the power board; it can quickly screen the power board and provide accurate and reliable test results; it is suitable for the testing and quality control of various types of inverter APOW power boards; it has important significance in practical applications and can provide effective technical support for the research and development, production and maintenance of power boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the APOW-01C power board.

[0021] Figure 2 The following is a circuit diagram of an APOW power board detection device. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] See also Figure 2 , an APOW power board detection device, comprising:

[0024] The electronic load module is used as an electronic load to keep the power supply under test at a constant current value;

[0025] The power supply voltage monitoring module is used to detect the voltage of the power supply to be tested. When the voltage of the power supply to be tested is lower than the set value, it will light up to indicate;

[0026] Electronic load control module, used to control whether the electronic load is turned off;

[0027] The electronic load control module is connected to the electronic load module, and the electronic load module is connected to the power supply voltage monitoring module;

[0028] The electronic load module includes:

[0029] A reference voltage unit is used to obtain a reference voltage and output the reference voltage to the constant current acquisition unit after voltage division;

[0030] The constant current acquisition unit is used to obtain a fixed current value based on the divided reference voltage and the fixed resistor, so that the power supply under test is kept constant at a fixed current value;

[0031] The reference voltage unit is connected to the constant current acquisition unit.

[0032] In this example: See Figure 2 The reference voltage unit includes a voltage regulator TL431, a capacitor C4, a resistor R2, and a potentiometer RP1. The negative electrode of the voltage regulator TL431 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to a 12V voltage, the positive electrode of the voltage regulator TL431 is grounded, the reference electrode of the voltage regulator TL431 is connected to one end of the capacitor C4, one end of the resistor R2, the power supply voltage monitoring module, and the negative electrode of the voltage regulator TL431, the other end of the capacitor C4 is grounded, the other end of the resistor R2 is connected to one end of the potentiometer RP1, the other end of the potentiometer RP1 is grounded, the sliding end of the potentiometer RP1 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the constant current acquisition unit.

[0033] The TL431 is a reference voltage source with an adjustable output voltage. With appropriate peripheral circuitry, it can output high-quality reference voltages over a wide range. Here, a 2.5V reference voltage is applied to resistor R2 and potentiometer RP1. The lower half of the slider at potentiometer RP1 divides the voltage and outputs a constant voltage to the constant current acquisition unit.

[0034] In this example: See Figure 2 The constant current acquisition unit includes an amplifier U1A, a MOS tube Q1, and a resistor R7. The non-inverting end of the amplifier U1A is connected to the reference voltage unit, the inverting end of the amplifier U1A is connected to the electronic load control module, one end of the capacitor C3, and one end of the resistor R5. The other end of the resistor R5 is connected to the S pole of the MOS tube Q1 and one end of the resistor R7. The other end of the resistor R7 is grounded. The output end of the amplifier U1A is connected to the other end of the capacitor C3 and one end of the resistor R4. The other end of the resistor R4 is connected to the G pole of the MOS tube Q1. The D pole of the MOS tube Q1 is connected to the APOW power board through the interface J3.

[0035] Initially, the non-inverting terminal of amplifier U1A is at a constant voltage, and there is no voltage at the inverting terminal. Amplifier U1A outputs a high level, driving MOS tube Q1 to turn on. Current flows through resistor R7, and voltage exists, which is fed back to the inverting terminal of amplifier U1A. When the current flowing through is relatively large, the voltage at the inverting terminal of amplifier U1A is higher than the voltage at the non-inverting terminal, which reduces the conduction degree of MOS tube Q1. Similarly, when the current flowing through resistor R7 is relatively small, the voltage at the non-inverting terminal of amplifier U1A is higher than the voltage at the inverting terminal, increasing the output and deepening the conduction degree of MOS tube Q1, thereby changing the current flowing through resistor R7. Finally, the voltage at the non-inverting and inverting terminals of amplifier U1A is the same, and the current flowing through resistor R7 is constant, so that the voltage output current to be measured of the APOW power board tested through interface J3 is determined.

[0036] In this example: See Figure 2The electronic load control module includes a switch S1, one end of the switch S1 is connected to a 12V voltage, the other end of the switch S1 is connected to the anode of a diode D1, and the cathode of the diode D1 is connected to the inverting terminal of the amplifier U1A.

[0037] After the switch S1 is closed, the 12V voltage is applied to the inverting terminal of the amplifier U1A through the switch S1 and the diode D1, directly turning off the amplifier U1A and shutting off the electronic load.

[0038] In this example: See Figure 2 The power supply voltage monitoring module includes an amplifier U1B, a potentiometer RP2, and a diode D13. The non-inverting end of the amplifier U1B is connected to the electronic load module, the inverting end of the amplifier U1B is connected to one end of the potentiometer RP2 and one end of the resistor R13, the other end of the resistor R13 is grounded, the other end of the potentiometer RP2 is connected to the APOW power supply board through the interface J3, the output end of the amplifier U1B is connected to one end of the resistor R11, the other end of the resistor R11 is connected to the positive electrode of the diode D13, and the negative electrode of the diode D13 is grounded.

[0039] The structure of the APOW-01C power board in the APOW power board is as follows Figure 1 As shown, X3 / X4 pins share DC24V power supply with a load capacity of 0.3Amax; X2:1, X2:2 pins, DC12V power supply, load capacity of 0.3Amax; X2:6, X2:7 pins, DC24V- power supply, load capacity of 0.3Amax; X2:8, X2:7 pins, DC24V+ power supply, load capacity of 5Amax.

[0040] Here we take X2:8, X2:7 pins, DC24V+ power supply, and load capacity 5Amax as an example. Figure 2 As shown, the APOW power board's voltage under test output current is determined, and the voltage at the non-inverting terminal of amplifier U1B (reference voltage input) is determined. The voltage under test is then divided across potentiometer RP2 and resistor R13. When the voltage across resistor R13 is less than the voltage at the non-inverting terminal of amplifier U1B, amplifier U1B outputs a high level, and diode D13 illuminates, indicating a problem with the APOW power board's voltage under test circuit (X2:8, X2:7 pins, DC24V+ power supply, 5A max load capacity). This same method can be used to detect other voltages under test on the APOW power board.

[0041] The working principle of the utility model is as follows: the electronic load module is used as an electronic load to keep the power supply to be tested constant at a fixed current value; the power supply voltage monitoring module is used to detect the voltage of the power supply to be tested, and when the voltage of the power supply to be tested is lower than the set value, a light indicator is emitted; the electronic load control module is used to control whether the electronic load is turned off.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An APOW power board detection device, characterized in that: The APOW power board detection device includes: The electronic load module is used as an electronic load to keep the power supply under test at a constant current value; The power supply voltage monitoring module is used to detect the voltage of the power supply to be tested. When the voltage of the power supply to be tested is lower than the set value, it will light up to indicate; Electronic load control module, used to control whether the electronic load is turned off; The electronic load control module is connected to the electronic load module, and the electronic load module is connected to the power supply voltage monitoring module; The electronic load module includes: A reference voltage unit is used to obtain a reference voltage and output the reference voltage to the constant current acquisition unit after voltage division; The constant current acquisition unit is used to obtain a fixed current value based on the divided reference voltage and the fixed resistor, so that the power supply under test is kept constant at a fixed current value; The reference voltage unit is connected to the constant current acquisition unit.

2. The APOW power board detection device according to claim 1, characterized in that: The reference voltage unit includes a voltage regulator TL431, a capacitor C4, a resistor R2, and a potentiometer RP1. The negative electrode of the voltage regulator TL431 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to a 12V voltage, the positive electrode of the voltage regulator TL431 is grounded, the reference electrode of the voltage regulator TL431 is connected to one end of the capacitor C4, one end of the resistor R2, the power supply voltage monitoring module, and the negative electrode of the voltage regulator TL431, the other end of the capacitor C4 is grounded, the other end of the resistor R2 is connected to one end of the potentiometer RP1, the other end of the potentiometer RP1 is grounded, the sliding end of the potentiometer RP1 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the constant current acquisition unit.

3. The APOW power board detection device according to claim 1 or 2, characterized in that: The constant current acquisition unit includes an amplifier U1A, a MOS tube Q1, and a resistor R7. The non-inverting end of the amplifier U1A is connected to the reference voltage unit, the inverting end of the amplifier U1A is connected to the electronic load control module, one end of the capacitor C3, and one end of the resistor R5. The other end of the resistor R5 is connected to the S pole of the MOS tube Q1 and one end of the resistor R7. The other end of the resistor R7 is grounded. The output end of the amplifier U1A is connected to the other end of the capacitor C3 and one end of the resistor R4. The other end of the resistor R4 is connected to the G pole of the MOS tube Q1. The D pole of the MOS tube Q1 is connected to the APOW power board through the interface J3.

4. The APOW power board detection device according to claim 3, characterized in that: The electronic load control module includes a switch S1 , one end of the switch S1 is connected to a 12V voltage, the other end of the switch S1 is connected to the anode of a diode D1 , and the cathode of the diode D1 is connected to the inverting terminal of the amplifier U1A.

5. The APOW power board detection device according to claim 1, characterized in that: The power supply voltage monitoring module includes an amplifier U1B, a potentiometer RP2, and a diode D13. The non-inverting end of the amplifier U1B is connected to the electronic load module, the inverting end of the amplifier U1B is connected to one end of the potentiometer RP2 and one end of the resistor R13, the other end of the resistor R13 is grounded, the other end of the potentiometer RP2 is connected to the APOW power board through the interface J3, the output end of the amplifier U1B is connected to one end of the resistor R11, the other end of the resistor R11 is connected to the positive electrode of the diode D13, and the negative electrode of the diode D13 is grounded.