A power module detection device and detection method
By designing a power module detection device using double spring loaded terminals and electronic loads, the problems of pad damage and measurement error during power module detection in the prior art are solved, and higher detection accuracy and stability are achieved.
Patent Information
- Application Number
- CN202411881559.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-04-08
AI Technical Summary
In the prior art, when detecting power modules, it is necessary to manually operate the test wires to test the pads, resulting in pad damage and measurement errors.
A power module detection device is designed, using double spring loading terminals to connect the power module, contacting the pad holes of the signal processing board and the power module, and combining electronic load and voltmeter for no-load and load voltage detection.
It effectively avoids damage to the solder pads, improves the accuracy and stability of detection, reduces measurement errors, and ensures its power supply quality and stable operation under different working conditions by comprehensively evaluating the performance of the power module.
Smart Images
Figure CN119780481A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of power supply detection, and in particular relates to a power supply module detection device and a detection method. Background Art
[0002] By testing the power module, we can not only ensure that its performance meets the requirements, such as output voltage accuracy and stability, to ensure normal power supply to the equipment, but also detect whether its internal components are damaged or have potential faults to avoid sudden failure during use that affects equipment operation. It can also verify its ability to work under different load conditions to adapt to actual application scenarios and improve system reliability.
[0003] The main function of the power module model PT6937A2 is to supply power to the digital signal processor, including 5V, 3.3V and 1.8V. It is composed of components such as a printed circuit board and a power monitor. According to the process requirements of the power module, when assembling this type of power module, the 23 connected pins are passed through the pin pads of the power module and the corresponding pads on the digital signal processor printed circuit board, and welded at the corresponding pins at the bottom of the printed circuit board. Under this assembly requirement, the 23 pad holes in the printed circuit board are not assembled before the power module is completed and assembled in the product. Therefore, when testing the power module, welding test wires or cable clamps are required for testing, and there is a situation where the pads are damaged. In addition, according to technical requirements, this type of power module needs to be loaded, including 3.3V and 1.8V loads. This test also requires manual operation to test the pad holes using test wires, etc., which causes pad damage and produces large measurement errors. Summary of the invention
[0004] The object of the present invention is to provide a power module detection device and a detection method in view of the above problems.
[0005] To achieve the above object, the present invention adopts the following technical solution: a power module detection device, comprising: The box body structure is composed of an upper cover plate, a front panel, a chassis, and a rear panel. The upper cover plate is movably connected to the chassis, and a power socket is arranged on the rear panel. A signal processing board is located in the chassis and is provided with pad holes corresponding to the power module and double spring-loaded wiring terminals, and positioning holes are provided at the four corners of the signal processing board; The power supply, located inside the chassis; The front panel is located on the front of the chassis. The front panel is equipped with a 3.3V output voltmeter, a 1.8V output voltmeter, a power switch, a 3.3V load input terminal, a 1.8V load input terminal, a voltage test terminal, and a light-emitting diode. The light-emitting diode is used to indicate the voltage status of the power module. The 3.3V output voltmeter and the 1.8V output voltmeter are used to display the voltage values under no-load and load. The 3.3V load input terminal and the 1.8V load input terminal are used to connect the electronic load input current. The voltage test terminal is used to connect an external multimeter to measure the voltage. A first copper column is arranged inside the chassis, and the positioning hole of the signal processing board is fixedly connected to the chassis through the first copper column; A second copper column is arranged above the signal processing board; Electronic load, located outside the chassis, is used to provide a specific load.
[0006] Preferably, the upper cover is hinged to the chassis via hinges, and a door lock is provided on the upper cover.
[0007] Preferably, the double spring-loaded terminal block welded at the pad hole on the signal processing board enables the probe to contact the pad of the power module through spring force, and the contact end is arc-shaped. The signal processing board also includes a mains power conversion and output circuit.
[0008] Preferably, the power supply is connected to the signal processing board via a power line, and the power line includes 5V, 3.3V and 1.8V cables.
[0009] Preferably, a rubber buffer pad is provided on the top of the second copper column, and the thickness of the rubber buffer pad is 2-3 mm and the hardness is 40-60 Shore hardness.
[0010] A power module detection method, the method comprising the following steps: S1. Open the upper cover of the chassis, align the positioning hole of the power module to be tested with the second copper column above the signal processing board, and make the test hole of the power module correspond to the double spring-loaded terminal on the signal processing board. Then, use a stud to pass through the positioning hole of the power module to fix it on the signal processing board, and ensure that the connection between the power module and the detection device is stable and reliable; S2. Connect the 220V mains power through the power socket on the rear panel, and turn on the power switch on the front panel. The LEDs corresponding to 5V, 3.3V and 1.8V on the front panel light up. Read and record the no-load voltage output value through the 3.3V output voltmeter and the 1.8V output voltmeter. Observe whether the voltage value is within the normal range. After completing the no-load voltage detection, turn off the power switch. S3. Connect the wiring harness with the red test lead to the "+" of the electronic load "INPUT", and the black test lead to the "-", then insert the red test lead into the "3.3V load +" jack on the front panel of the detection device, and the black test lead into the "3.3V load -" jack, turn on the electronic load switch "Power", press "I-set", "8", "Enter" in sequence through the operation buttons of the electronic load to set the current value to 8A, turn on the power switch of the detection device again, press the "on / off" button on the electronic load, check the load voltage value displayed on the 3.3V output voltmeter, record the value and determine whether it meets the requirements, turn off the power switch of the detection device after the test is completed, and unplug the red and black test leads; S4. Insert the red test lead into the "1.8V load +" jack on the front panel of the detection device, and the black test lead into the "1.8V load -" jack, turn on the electronic load switch "Power", press "I-set", "2", "Enter" in sequence through the electronic load operation buttons to set the current value to 2A, turn on the power switch of the detection device, press the "on / off" button on the electronic load, check the load voltage value displayed on the 1.8V output voltmeter, record the data and determine whether it is normal, and then turn off the power switch of the detection device and unplug the red and black test leads.
[0011] Compared with the existing technology, the advantages of a power module detection device and detection method are: 1. The power module is connected with double spring-loaded terminals, which avoids the damage to the pads in the traditional way. At the same time, the signal processing board is firmly connected to the copper column and the chassis through the positioning hole, ensuring reliable connection and stable signal, thus protecting the power module pads and improving detection accuracy and stability.
[0012] 2. The integrated voltmeter, switch, test terminal and light-emitting diode on the front panel facilitate monitoring and control. The electronic load accurately provides the load and the connecting wires have good performance. The chassis is made of excellent material and has heat dissipation adjustment function, which achieves the effect of convenient operation, accurate testing, stable operation and extended device life.
[0013] 3. Through the no-load and load voltage detection steps, and by utilizing the coordinated work of various components of the detection device, the performance of the power module can be comprehensively evaluated, its power supply quality can be ensured, and its stable operation under different working conditions can be ensured, thus effectively improving the efficiency and reliability of the power module detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a principle block diagram of a power module detection device and detection method provided by the present invention; Figure 2 It is a structural schematic diagram of a power module detection device and detection method provided by the present invention; Figure 3 It is a schematic diagram of the top structure of an upper cover plate of a power module detection device and detection method provided by the present invention; Figure 4 It is a structural schematic diagram of a front panel of a power module detection device and detection method provided by the present invention; Figure 5 It is a schematic diagram of a PT6937A2 power module printed circuit board of a power module detection device and detection method provided by the present invention; Figure 6 It is a structural schematic diagram of a rear panel of a power module detection device and detection method provided by the present invention; Figure 7 It is a detection schematic diagram of a power module detection device and detection method provided by the present invention.
[0015] In the figure: 1. Upper cover; 1-1. Loose-leaf; 1-2. Door lock; 2. Front panel; 2-1. 3.3V output voltmeter; 2-2. 1.8V output voltmeter; 2-3. Power switch; 2-4. 3.3V load input; 2-5. 1.8V load input terminal; 2-6. Voltage test terminal; 2-7. Light-emitting diode; 3. Signal processing board; 3-1. Pad hole; 3-2. Positioning hole; 4. Chassis; 5. Power supply; 6. Rear panel; 6-1. Power socket; 7. First copper column; 8. Second copper column; 9. Electronic load. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below 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.
[0017] like Figure 1-Figure 7 As shown, a power module detection device includes: The box structure consists of an upper cover plate 1, a front panel 2, a chassis 4, and a rear panel 6. The upper cover plate 1 is movably connected to the chassis 4. The rear panel 6 is provided with a power socket 6-1. The signal processing board 3 is located in the chassis 4 and is provided with a solder pad hole 3-1 corresponding to the power module and a double spring-loaded terminal. The four corners of the signal processing board 3 are provided with positioning holes 3-2. The power supply 5 is located in the chassis 4. The front panel 2 is located on the front of the chassis 4. The front panel 2 is provided with a 3.3V output voltage meter 2-1, a 1.8V output voltage meter 2-2, a power switch 2-3, a 3.3V load input terminal 2-4, a 1.8V load input terminal 2-5, a voltage test terminal 2-6, and a light-emitting diode 2-7. The light-emitting diode 2-7 is used to indicate the voltage state of the power module. The 3.3V output voltage meter 2-1 and the 1.8V output voltage meter 2-2 are used to display The figure shows the voltage values under no-load and load, the 3.3V load input terminal 2-4 and the 1.8V load input terminal 2-5 are used to connect the electronic load input current, the voltage test terminal 2-6 is used to measure the voltage with an external multimeter, the first copper column 7 is arranged inside the chassis 4, the positioning hole 3-2 of the signal processing board 3 is fixedly connected to the chassis 4 through the first copper column 7, the second copper column 8 is arranged above the signal processing board 3, and the electronic load 9 is located outside the chassis 4 for providing a specific load, wherein the first copper column 7 is mainly used to fix the signal processing board 3, it cooperates with the positioning hole 3-2 on the signal processing board 3, and is screwed with the first copper column 7 through the stud passing through the positioning hole 3-2, thereby fastening the signal processing board 3 in the chassis 4, ensuring the stability of the position of the signal processing board 3 inside the detection device, and ensuring its normal operation and the reliability of connection with other components.
[0018] The upper cover plate 1 is hinged to the chassis 4 through a hinge 1 - 1 , and a door lock 1 - 2 is provided on the upper cover plate 1 .
[0019] The double spring-loaded terminal block welded at the pad hole 3-1 on the signal processing board 3 enables the probe to contact the pad of the power module through spring force, and the contact end is arc-shaped. The signal processing board 3 also includes a mains power conversion and output circuit.
[0020] The power supply 5 is connected to the signal processing board 3 via power lines, which include 5V, 3.3V and 1.8V cables.
[0021] A rubber buffer pad is arranged on the top of the second copper column 8 . The rubber buffer pad has a thickness of 2-3 mm and a hardness of 40-60 Shore A hardness.
[0022] The operating principle of the present invention is now described as follows: open the upper cover plate 1 of the chassis 4, align the positioning hole of the power module to be tested with the second copper column 8 above the signal processing board 3, and make the test hole of the power module correspond to the double spring-loaded terminal on the signal processing board 3, and then use a stud to pass through the positioning hole of the power module to fix it on the signal processing board 3, ensuring that the power module is stably and reliably connected to the detection device; Connect the 220V mains power through the power socket 6-1 on the rear panel 6, turn on the power switch 2-3 on the front panel 2, then the light-emitting diodes 2-7 corresponding to 5V, 3.3V and 1.8V on the front panel 2 light up, read and record the no-load voltage output value through the 3.3V output voltage meter 2-1 and the 1.8V output voltage meter 2-2, observe whether the voltage value is within the normal range, and turn off the power switch 2-3 after completing the no-load voltage detection, so as to complete the no-load voltage detection of the power module; Connect the wiring harness with the red test lead to the "+" of the "INPUT" of the electronic load 9, and the black test lead to the "-", then insert the red test lead into the "3.3V load +" 2-4 jack on the front panel 2 of the detection device, and insert the black test lead into the "3.3V load -" jack 2-4, turn on the electronic load 9 switch "Power", press "I-set", "8", "Enter" in sequence through the operation buttons of the electronic load 9 to set the current value to 8A, turn on the power switch 2-3 of the detection device again, press the "on / off" button on the electronic load 9, check the load voltage value displayed in the 3.3V output voltage table 2-1, record the value and determine whether it meets the requirements, turn off the power switch 2-3 of the detection device after the detection is completed, and unplug the red and black test leads, so as to complete the 3.3V load voltage detection step of the power module; Insert the red test lead into the "1.8V load +" 2-5 jack on the front panel 2 of the detection device, and insert the black test lead into the "1.8V load -" jack 2-5, turn on the electronic load 9 switch "Power", press "I-set", "2", "Enter" in sequence through the electronic load 9 operation buttons to set the current value to 2A, turn on the detection device power switch 2-3, press the button "on / off" on the electronic load 9, check the load voltage value displayed on the 1.8V output voltage table 2-2, record the data and determine whether it is normal, turn off the detection device power switch 2-3 after completion, unplug the red and black test leads, and complete the 1.8V load voltage detection of the power module; Among them, the power module model tested is PT6937A2.
[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A power module detection device, characterized in that: include: The box body structure comprises an upper cover plate (1), a front panel (2), a chassis (4), and a rear panel (6); the upper cover plate (1) and the chassis (4) are movably connected, and the rear panel (6) is provided with a power socket (6-1); A signal processing board (3) is located in the chassis (4) and is provided with a solder pad hole (3-1) corresponding to the power module and a double spring-loaded terminal block, and positioning holes (3-2) are provided at four corners of the signal processing board (3); A power supply (5) is located in the chassis (4); A front panel (2) is located on the front of the chassis (4). The front panel (2) is provided with a 3.3V output voltmeter (2-1), a 1.8V output voltmeter (2-2), a power switch (2-3), a 3.3V load input terminal (2-4), a 1.8V load input terminal (2-5), a voltage test terminal (2-6), and a light-emitting diode (2-7). The light-emitting diode (2-7) is used to indicate the voltage state of the power module. The 3.3V output voltmeter (2-1) and the 1.8V output voltmeter (2-2) are used to display the voltage values under no-load and load. The 3.3V load input terminal (2-4) and the 1.8V load input terminal (2-5) are used to connect the electronic load input current. The voltage test terminal (2-6) is used to connect an external multimeter to measure voltage. A first copper column (7) is arranged inside the chassis (4), and the positioning hole (3-2) of the signal processing board (3) is fixedly connected to the chassis (4) via the first copper column (7); A second copper column (8) is arranged above the signal processing board (3); The electronic load (9) is located outside the chassis (4) and is used to provide a specific load.
2. A power module detection device according to claim 1, characterized in that: The upper cover plate (1) is hinged to the chassis (4) via a hinge (1-1), and a door lock (1-2) is provided on the upper cover plate (1).
3. A power module detection device according to claim 1, characterized in that: The double spring-loaded terminal block welded at the pad hole (3-1) on the signal processing board (3) enables the probe to contact the pad of the power module through spring force, and the contact end is arc-shaped. The signal processing board (3) also includes a mains power conversion and output circuit.
4. A power module detection device according to claim 1, characterized in that: The power supply (5) is connected to the signal processing board (3) via a power line, and the power line includes 5V, 3.3V and 1.8V cables.
5. A power module detection device according to claim 1, characterized in that: A rubber buffer pad is arranged on the top of the second copper column (8); the rubber buffer pad has a thickness of 2-3 mm and a hardness of 40-60 Shore hardness.
6. A power module detection method, which adopts the power module detection device according to claim 1, characterized in that: The method comprises the following steps: S1. Open the upper cover (1) of the chassis (4), align the positioning hole of the power module to be tested with the second copper column (8) above the signal processing board (3), and make the test hole of the power module correspond to the double spring-loaded terminal on the signal processing board (3). Then, pass the stud through the positioning hole of the power module to fix it on the signal processing board (3), and ensure that the connection between the power module and the detection device is stable and reliable. S2. Connect the 220V mains power through the power socket (6-1) on the rear panel (6), and turn on the power switch (2-3) on the front panel (2). At this time, the light-emitting diodes (2-7) corresponding to 5V, 3.3V and 1.8V on the front panel (2) light up. Read and record the voltage output value when no-load through the 3.3V output voltmeter (2-1) and the 1.8V output voltmeter (2-2). Observe whether the voltage value is within the normal range. After completing the no-load voltage detection, turn off the power switch (2-3); S3. Connect the wiring harness with the red test lead to the "+" of the "INPUT" of the electronic load (9), and the black test lead to the "-". Then insert the red test lead into the "3.3V load +" (2-4) jack on the front panel (2) of the detection device, and insert the black test lead into the "3.3V load -" jack (2-4). Turn on the "Power" switch of the electronic load (9). Press "I-set", "8", and "Enter" on the operation buttons of the electronic load (9) in sequence to set the current value to 8A. Turn on the power switch (2-3) of the detection device again. Press the "on / off" button on the electronic load (9) to check the load voltage value displayed on the 3.3V output voltage meter (2-1). Record the value and determine whether it meets the requirements. After the test is completed, turn off the power switch (2-3) of the detection device and unplug the red and black test leads. S4. Insert the red test lead into the "1.8V load +" (2-5) jack on the front panel (2) of the test device, and insert the black test lead into the "1.8V load -" jack (2-5). Turn on the "Power" switch of the electronic load (9). Press "I-set", "2", and "Enter" on the electronic load (9) to set the current value to 2A. Turn on the power switch (2-3) of the test device. Press the "on / off" button on the electronic load (9) to check the load voltage value displayed on the 1.8V output voltage meter (2-2). Record the data and determine whether it is normal. After completion, turn off the power switch (2-3) of the test device and unplug the red and black test leads.