Adjustable instantaneous voltage surge trigger rack

Abstract

The utility model relates to the technical field of surge trigger racks, in particular to an adjustable instantaneous voltage surge trigger rack, which comprises two low-voltage adjustable power supplies, a high-voltage adjustable power supply, a tested product, an oscilloscope, a capacitor C0, an eight-hole two-opening two-closing relay K1, an adjustable resistor R1, a switch S1, a fixed-value resistor R2 and a test end. The eight-hole two-opening and two-closing type relay K1 is provided with eight pins; according to the adjustable transient voltage surge trigger rack, a low-voltage adjustable power supply and a high-voltage adjustable power supply are adopted, the low-voltage adjustable power supply is connected with a tested product and a test end, and an eight-hole two-opening two-closing relay K1 is connected with a capacitor C0, an adjustable resistor R1, a switch S1 and an oscilloscope. The functions of simplifying the construction and configuration of a test environment, flexibly adjusting the amplitude of the voltage surge and flexibly adjusting the pulse width of the voltage surge are realized, and the high-voltage adjustable power supply, the capacitor C0 and the adjustable resistor R1 are accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of surge triggering platform technology, specifically to an adjustable instantaneous voltage surge triggering platform. Background Technology

[0002] A surge triggering test bench is a testing device used to generate and control voltage surges. It can simulate voltage transients of different types and amplitudes by using a controllable voltage source and triggering circuit to simulate voltage fluctuations under special scenarios such as power grid spikes and lightning interference. In the rapid development of the new energy electric vehicle industry, voltage surge is a crucial testing item. Surge states caused by transient voltage increases may be caused by lightning strikes or power equipment switching, posing a huge threat to the stability of electronic components and systems in new energy vehicles.

[0003] Currently, some surge triggering test benches on the market have complex circuit structures containing a large number of high-precision electronic components, resulting in high manufacturing costs. This not only increases the difficulty of production and maintenance but also affects the reliability and stability of the equipment. Some surge triggering test benches cannot flexibly adjust the voltage surge amplitude under different test conditions, limiting the simulation and testing of various practical application environments. Furthermore, some surge triggering test benches cannot accurately adjust the pulse width of the voltage surge, failing to fully simulate transient voltage phenomena with different time constants, leading to one-sided test results. Additionally, some existing surge triggering test benches can only simulate a single type of surge waveform, failing to cover the various surge situations that may be encountered in practical applications, thus reducing the comprehensiveness of the test.

[0004] In summary, existing surge triggering test benches suffer from problems such as complex circuitry, high cost, poor adjustability, and limited simulation waveforms. Therefore, in order to meet the high requirements for reliability and safety of new energy vehicles in the new era, there is an urgent need for an advanced surge triggering test bench that simplifies circuit design, is relatively inexpensive, has adjustable voltage surge amplitude and pulse width, and can simulate a variety of surge waveforms. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable instantaneous voltage surge triggering platform to solve the technical problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model discloses an adjustable instantaneous voltage surge triggering platform, comprising two low-voltage adjustable power supplies, a high-voltage adjustable power supply, a product under test, an oscilloscope, a capacitor C0, an eight-hole two-open-two-closed type relay K1, an adjustable resistor R1, a switch S1, a fixed resistor R2, and test terminals. The eight-hole two-open-two-closed type relay K1 has eight pins. Pins 1 and 8 are coil terminals used to apply voltage to the relay coil to activate or deactivate the relay K1. Pins 2 and 7 are normally closed contact groups NC1 and NC2. When the eight-hole two-open-two-closed type relay... When K1 is not activated, the contacts of pins 2 and 7 are closed. When the eight-hole two-open two-closed relay K1 is activated, the contacts of pins 2 and 7 are open. Pins 3 and 6 are normally open contact groups NO1 and NO2. When the eight-hole two-open two-closed relay K1 is not activated, the contacts of pins 2 and 7 are open. When the eight-hole two-open two-closed relay K1 is activated, the contacts of pins 2 and 7 are closed. Pins 4 and 5 are common contact groups COM1 and COM2, which are common connection points used for switching between normally open and normally closed contact groups.

[0007] One end of the low-voltage adjustable power supply is connected in series with the product under test, the test terminal, the fixed resistor R2, and the normally open contact NO2 of pin 6 of the eight-hole two-open two-closed relay K1. The other end of the low-voltage adjustable power supply is connected to the normally open contact NO1 of pin 3 of the eight-hole two-open two-closed relay K1. It is topologically connected to channel 1 of the oscilloscope between the fixed resistor R2 and the test terminal. Channel 2 of the oscilloscope is topologically connected between the fixed resistor R2 and the normally open contact NO2 of pin 6 of the eight-hole two-open two-closed relay K1. The adjustable resistor R1 is connected in parallel between the low-voltage adjustable power supply and the normally open contact NO1 of pin 3 of the eight-hole two-open two-closed relay K1, and between the fixed resistor R2 and the normally open contact NO2 of pin 6 of the eight-hole two-open two-closed relay K1.

[0008] Optionally, one end of another low-voltage adjustable power supply is connected in series with the common contact COM1 of pin 4 of the switch S1 and the eight-hole two-open two-closed relay K1, and the other end of the other low-voltage adjustable power supply is connected to the common contact COM2 of pin 5 of the eight-hole two-open two-closed relay K1. The low-voltage adjustable power supply is used to provide power to the product under test and the eight-hole two-open two-closed relay K1.

[0009] Optionally, the two ends of the high-voltage adjustable power supply are connected to the coil terminals of pin 1 and pin 8 of the eight-hole two-open two-closed relay K1, respectively, and are connected in series with the capacitor C0 between the normally closed contact NC1 of pin 2 and the normally closed contact NC2 of pin 7 of the eight-hole two-open two-closed relay K1. The other channels of the oscilloscope are all topologically connected between the adjustable resistor R1 and the normally open contact NO1 of pin 3 of the eight-hole two-open two-closed relay K1.

[0010] Optionally, since the high-voltage adjustable power supply is connected to the coil terminals of pin 1 and pin 8 of the eight-hole two-open two-closed relay K1, and is used to control the activation state of the eight-hole two-open two-closed relay K1, after the switch S1 is closed, the high-voltage voltage can be released through the control of the eight-hole two-open two-closed relay K1, thereby generating an instantaneous voltage surge. The high-voltage adjustable power supply charges the capacitor C0 so that the capacitor C0 reaches the same voltage as the high-voltage adjustable power supply.

[0011] Optionally, the switch S1 can be replaced with a PLC relay, which has a dedicated programming interface and features high reliability, high stability, low power consumption, and high efficiency.

[0012] Optionally, the duration of the voltage surge can be adjusted by changing the values ​​of the capacitor C0 and the adjustable resistor R1, and the voltage value of the voltage surge can be obtained by adjusting the high-voltage adjustable power supply, and the pulse width of the voltage surge can be adjusted by adjusting the adjustable resistor R1. Then, the formula for calculating the pulse width of the voltage surge is PW≈Tau=R1×C0, where PW represents the pulse width, Tau represents the time constant, and the time constant is used to describe the rate of voltage change in the charging and discharging behavior of the circuit composed of the capacitor and resistor, R1 represents the resistance value of the adjustable resistor R1, and C0 represents the capacitance value of the capacitor C0.

[0013] Optionally, the eight-hole two-open two-closed relay K1 releases the charging voltage of capacitor C0 into a voltage surge, and adjusts the discharge time through the adjustable resistor R1. The fixed resistor R2 is a simulated discharge internal resistance. The surge voltage and discharge time are then monitored by an oscilloscope. Channel 1 of the oscilloscope is used to monitor the voltage waveform through the resistor in real time, and channel 2 is used to capture the overall voltage waveform.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This adjustable instantaneous voltage surge triggering bench utilizes both a low-voltage and a high-voltage adjustable power supply. The low-voltage adjustable power supply connects to the product under test (DUT) and the test terminal. An eight-hole, two-open, two-closed relay K1 connects to capacitor C0, adjustable resistor R1, switch S1, and oscilloscope. This simplifies the setup and configuration of the test environment, allowing for flexible adjustment of voltage surge amplitude and pulse width. Precise control of the high-voltage adjustable power supply, capacitor C0, and adjustable resistor R1 further enables precise adjustment of the voltage surge amplitude and pulse width, achieving high-precision voltage transient simulation. This improves overall operability while meeting various test scenarios and requirements, reducing the production and maintenance costs of the voltage surge triggering bench. It also supports voltage surge simulations in scenarios such as electrostatic discharge (EDS) and hot-swappable EOS, helping to evaluate the DUT's anti-interference capability and reliability in practical applications, and improving the flexibility and accuracy of the test. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the adjustable instantaneous voltage surge triggering platform structure of this utility model.

[0017] The attached diagram is labeled as follows: 1. Low-voltage adjustable power supply; 2. High-voltage adjustable power supply; 3. Product under test; 4. Oscilloscope; 5. Capacitor C0; 6. Eight-hole two-open two-closed relay K1; 7. Adjustable resistor R1; 8. Switch S1; 9. Fixed resistor R2; 10. Test terminal. Detailed Implementation

[0018] The technical solution of this utility model will be described in detail below through specific embodiments.

[0019] Reference Figure 1As shown, this utility model discloses an adjustable instantaneous voltage surge triggering platform structure, including two low-voltage adjustable power supplies 1, a high-voltage adjustable power supply 2, a product under test 3, an oscilloscope 4, a capacitor C05, an eight-hole two-open-two-closed type relay K16, an adjustable resistor R17, a switch S18, a fixed resistor R29, and a test terminal 10. The eight-hole two-open-two-closed type relay K16 has eight pins. Pins 1 and 8 are coil terminals, used to apply voltage to the relay coil to activate or deactivate the relay K16. Pins 2 and 7 are normally closed contact groups NC1 and NC2. When the eight-hole two-open-two-closed type relay... When the relay K16 is not activated, the contacts of pins 2 and 7 are closed. When the eight-hole two-open two-closed relay K16 is activated, the contacts of pins 2 and 7 are open. Pins 3 and 6 are normally open contact groups NO1 and NO2. When the eight-hole two-open two-closed relay K16 is not activated, the contacts of pins 2 and 7 are open. When the eight-hole two-open two-closed relay K16 is activated, the contacts of pins 2 and 7 are closed. Pins 4 and 5 are common contact groups COM1 and COM2, which are common connection points used for switching between normally open and normally closed contact groups.

[0020] One end of a low-voltage adjustable power supply 1 is connected in series with the product under test 3, the test terminal 10, the fixed resistor R29, and the normally open contact NO2 of pin 6 of the eight-hole two-open two-closed relay K16. The other end of the low-voltage adjustable power supply 1 is connected to the normally open contact NO1 of pin 3 of the eight-hole two-open two-closed relay K16. It is topologically connected to channel 1 of oscilloscope 4 between the fixed resistor R29 and the test terminal 10. Channel 2 of oscilloscope 4 is topologically connected between the fixed resistor R29 and the normally open contact NO2 of pin 6 of the eight-hole two-open two-closed relay K16. An adjustable resistor R17 is connected in parallel between the low-voltage adjustable power supply 1 and the normally open contact NO1 of pin 3 of the eight-hole two-open two-closed relay K16, and between the fixed resistor R29 and the normally open contact NO2 of pin 6 of the eight-hole two-open two-closed relay K16.

[0021] Preferably, one end of another low-voltage adjustable power supply 1 is connected in series with the common contact COM1 of pin 4 of the switch S18 and the eight-hole two-open two-closed relay K16, and the other end of the other low-voltage adjustable power supply 1 is connected to the common contact COM2 of pin 5 of the eight-hole two-open two-closed relay K16. The low-voltage adjustable power supply 1 is used to provide power to the product under test 3 and the eight-hole two-open two-closed relay K16 to ensure the basic working state of the circuit.

[0022] Preferably, the two ends of the high-voltage adjustable power supply 2 are connected to the coil terminals of pin 1 and pin 8 of the eight-hole two-open two-closed relay K16, respectively, and are connected in series with capacitor C05 between the normally closed contact NC1 of pin 2 and the normally closed contact NC2 of pin 7 of the eight-hole two-open two-closed relay K16. The other channels of the oscilloscope 4 are all topologically connected between the adjustable resistor R17 and the normally open contact NO1 of pin 3 of the eight-hole two-open two-closed relay K16.

[0023] Preferably, since the high-voltage adjustable power supply 2 is connected to the coil terminals of pin 1 and pin 8 of the eight-hole two-open-two-closed relay K16, it is used to control the activation state of the eight-hole two-open-two-closed relay K16, so that the eight-hole two-open-two-closed relay K16 can control and conduct instantaneous voltage surges through eight pins. After the switch S18 is closed, the high voltage can be released through the control of the eight-hole two-open-two-closed relay K16, thereby generating an instantaneous voltage surge. The high-voltage adjustable power supply 2 charges the capacitor C05 so that the capacitor C05 reaches the same voltage as the high-voltage adjustable power supply 2.

[0024] Preferably, switch S18 can be replaced with a PLC relay, which has a dedicated programming interface, high reliability, high stability, low power consumption and high efficiency, so as to realize the functions of automated control, flexible editing, timing function, multi-functional input and output control, remote monitoring and control.

[0025] Preferably, the duration of the voltage surge is adjusted by changing the values ​​of capacitor C05 and adjustable resistor R17, and the voltage value of the voltage surge can be obtained by adjusting the high-voltage adjustable power supply 2, and the pulse width of the voltage surge can be adjusted by adjusting the adjustable resistor R17. Then, the formula for calculating the pulse width of the voltage surge is PW≈Tau=R1×C0, where PW represents the pulse width, Tau represents the time constant, and the time constant is used to describe the rate of voltage change in the charging and discharging behavior of the circuit composed of capacitor and resistor, R1 represents the resistance value of adjustable resistor R17, and C0 represents the capacitance value of capacitor C05.

[0026] Preferably, the eight-hole two-open two-closed relay K16 releases the charging voltage of capacitor C05 into a voltage surge, and the discharge time is adjusted by the adjustable resistor R17. The fixed resistor R29 is the simulated discharge internal resistance. The surge voltage and discharge time are then monitored by the oscilloscope 4. Channel 1 of the oscilloscope 4 is used to monitor the voltage waveform through the resistor in real time, and channel 2 is used to capture the overall voltage waveform.

[0027] Working principle: First, the high-voltage adjustable power supply 2 inputs high-voltage DC power, which is stored in capacitor C05 under the control of the eight-hole two-open-two-closed relay K16 and switch S18. Meanwhile, the low-voltage adjustable power supply 1 inputs low-voltage DC power to supply power to the product under test 3 and the eight-hole two-open-two-closed relay K16. Then, when switch S18 is closed, the high voltage stored in capacitor C05 is released through the loop path of the product under test 3, test terminal 10, adjustable resistor R17 and eight-hole two-open-two-closed relay K16, forming an instantaneous voltage surge. Finally, channels 1 and 2 of oscilloscope 4 monitor the voltage surge passing through the test terminal in real time and capture the voltage change across the fixed resistor R29.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable instantaneous voltage surge triggering platform, characterized in that: It includes two low-voltage adjustable power supplies (1), a high-voltage adjustable power supply (2), the product under test (3), an oscilloscope (4), a capacitor C0 (5), an eight-hole two-open two-closed type relay K1 (6), an adjustable resistor R1 (7), a switch S1 (8), a fixed resistor R2 (9), and a test terminal (10). The eight-hole two-open two-closed type relay K1 (6) has 8 pins. Pins 1 and 8 are coil terminals, pins 2 and 7 are normally closed contact groups NC1 and NC2, pins 3 and 6 are normally open contact groups NO1 and NO2, and pins 4 and 5 are common contact groups COM1 and COM2. One end of the low-voltage adjustable power supply (1) is connected in series with the product under test (3), the test terminal (10), the fixed resistor R2 (9), and the normally open contact NO2 of pin 6 of the eight-hole two-open-two-closed relay K1 (6). The other end of the low-voltage adjustable power supply (1) is connected to the normally open contact NO1 of pin 3 of the eight-hole two-open-two-closed relay K1 (6). It is topologically connected between the fixed resistor R2 (9) and the test terminal (10) to the oscilloscope (4). On channel 1, and channel 2 of the oscilloscope (4) is topologically connected between the fixed resistor R2 (9) and the normally open contact NO2 of pin 6 of the eight-hole two-open two-closed relay K1 (6), located between the low-voltage adjustable power supply (1) and the normally open contact NO1 of pin 3 of the eight-hole two-open two-closed relay K1 (6), and the adjustable resistor R1 (7) is connected in parallel between the fixed resistor R2 (9) and the normally open contact NO2 of pin 6 of the eight-hole two-open two-closed relay K1 (6).

2. The adjustable instantaneous voltage surge triggering platform according to claim 1, characterized in that: One end of another low-voltage adjustable power supply (1) is connected in series with the common contact COM1 of pin 4 of the switch S1 (8) and the eight-hole two-open two-closed relay K1 (6), and the other end of the other low-voltage adjustable power supply (1) is connected to the common contact COM2 of pin 5 of the eight-hole two-open two-closed relay K1 (6).

3. An adjustable instantaneous voltage surge triggering platform according to claim 2, characterized in that: The two ends of the high-voltage adjustable power supply (2) are respectively connected to the coil terminals of pin 1 and pin 8 of the eight-hole two-open two-closed relay K1 (6), and are connected in series with the capacitor C0 (5) between the normally closed contact NC1 of pin 2 and the normally closed contact NC2 of pin 7 of the eight-hole two-open two-closed relay K1 (6). The other channels of the oscilloscope (4) are all topologically connected between the adjustable resistor R1 (7) and the normally open contact NO1 of pin 3 of the eight-hole two-open two-closed relay K1 (6).

4. An adjustable instantaneous voltage surge triggering platform according to claim 3, characterized in that: After the switch S1 (8) is closed, it can release the high voltage through the control of the eight-hole two-open two-closed relay K1 (6), thereby generating an instantaneous voltage surge. The high voltage adjustable power supply (2) charges the capacitor C0 (5) so that the capacitor C0 (5) reaches the same voltage as the high voltage adjustable power supply (2).

5. An adjustable instantaneous voltage surge triggering platform according to claim 3, characterized in that: The switch S1(8) can be replaced with a PLC relay.

6. An adjustable instantaneous voltage surge triggering platform according to claim 3, characterized in that: The formula for calculating the pulse width of a voltage surge is PW≈Tau=R1×C0, where PW represents the pulse width, Tau represents the time constant, and the time constant is used to describe the rate of voltage change in the charging and discharging behavior of the circuit composed of capacitors and resistors, R1 represents the resistance value of the adjustable resistor R1(7), and C0 represents the capacitance value of the capacitor C0(5).

7. An adjustable instantaneous voltage surge triggering platform according to claim 3, characterized in that: The eight-hole two-open two-closed relay K1 (6) releases the charging voltage of capacitor C0 (5) into a voltage surge, and adjusts the discharge time through the adjustable resistor R1 (7). The fixed resistor R2 (9) is the simulated discharge internal resistance, and the surge voltage and discharge time are monitored by the oscilloscope (4).

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