Aging driving circuit and testing device

Abstract

The utility model discloses an aging driving circuit and an aging driving device. The circuit comprises a constant current control module, a switch module, an adjusting module and an output interface. The constant-current control module is connected with a first power supply end, a first output end of the constant-current control module is connected with a control end of the switch module, the switch module is connected between the first power supply end and a first pole of the output interface, and the constant-current control module is used for controlling conduction of the switch module; the output interface is used for connecting a to-be-tested light-emitting element; and the adjusting module is connected between the second pole of the output interface and the grounding end and is connected with the second output end of the constant current control module, and the adjusting module is used for adjusting the driving current of the output interface. The technical scheme provided by the utility model can improve the stability of the driving current during the aging test, thereby improving the test efficiency and the accuracy of the test result, and reducing the test cost.

Description

Technical Field

[0001] This utility model relates to the field of drive detection technology, and in particular to an aging drive circuit and a testing device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) automotive taillights require an aging test during production. This test involves supplying a specific driving current to the OLED screen, illuminating it within the aging equipment. This process quickly exposes potential problems and defects, preventing faulty screens from progressing to the next stage and improving product reliability and lifespan. Variations in the driving current output by the aging drive circuit affect the illumination performance of the OLED screen under test, thus impacting the accuracy and reliability of the aging test results.

[0003] During long-term testing, the drive current output by the existing aging test circuit fluctuates, affecting the accuracy of the aging test results. Utility Model Content

[0004] This utility model provides an aging drive circuit and a testing device to solve the problem that the driving current output by the existing aging test circuit fluctuates, affecting the accuracy of the aging test results.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model embodiment provides an aging drive circuit, including:

[0007] Constant current control module, switching module, regulating module, and output interface;

[0008] The constant current control module is connected to the first power supply terminal, the first output terminal of the constant current control module is connected to the control terminal of the switch module, the switch module is connected between the first power supply terminal and the first pole of the output interface, and the constant current control module is used to control the switch module to conduct; the output interface is connected to the light-emitting element under test.

[0009] The adjustment module is connected between the second pole and the ground terminal of the output interface, and is connected to the second output terminal of the constant current control module. The adjustment module is used to adjust the drive current of the output interface.

[0010] Optionally, the aging drive circuit further includes an alarm module connected to the output interface, which generates an alarm signal based on the difference between the drive current of the output interface and a preset current threshold.

[0011] Optionally, the alarm module includes:

[0012] The system comprises an acquisition unit, a comparison unit, and an alarm unit.

[0013] The acquisition unit is connected to the first pole of the output interface, and the acquisition unit is used to acquire the drive current of the output interface;

[0014] The comparison unit is connected to the acquisition unit and the alarm unit respectively. The comparison unit is used to compare the driving current with the preset current threshold, and control the alarm unit to issue an alarm based on the comparison result.

[0015] Optionally, the acquisition unit includes a first resistor;

[0016] The comparison unit includes a comparator;

[0017] The first end of the first resistor is connected to the first end of the switching module, the second end of the switching module is connected to the first power supply terminal, the second end of the first resistor is connected to the first pole of the output interface, and the first resistor is used to collect the drive current.

[0018] The first input terminal of the comparator is connected to the second terminal of the first resistor, and the second input terminal of the comparator is connected to the reference signal input terminal. The comparator is used to compare the electrical signal at the first input terminal with the reference signal at the second input terminal. When the driving current is greater than a preset current threshold, the comparator generates a first level signal.

[0019] The alarm unit includes at least one of an audible alarm, a visual alarm, and a display alarm;

[0020] The alarm unit is used to issue an alarm based on the first level signal.

[0021] Optionally, the adjustment module includes:

[0022] At least one potentiometer, wherein a first terminal of the potentiometer is connected to a second terminal of the output interface and a second output terminal of the constant current control module, and a second terminal of the potentiometer is connected to a ground terminal;

[0023] The resistance of the potentiometer is adjustable.

[0024] Optionally, the resistance value of the potentiometer is greater than 0Ω and less than or equal to 10Ω;

[0025] The potentiometer's resistance adjustment step is less than or equal to 0.1Ω.

[0026] Optionally, the adjustment module includes:

[0027] A first potentiometer and a second potentiometer, wherein the first terminal of the first potentiometer is connected to the first terminal of the second potentiometer, the second terminal of the output interface, and the second output terminal of the constant current control module, and the second terminal of the first potentiometer is connected to the second terminal of the second potentiometer and the ground terminal;

[0028] The resistances of both the first potentiometer and the second potentiometer are adjustable.

[0029] Optionally, the potentiometer's resistance is adjustable to control the drive current to be greater than or equal to 35.2mA and less than or equal to 0.63A, with the drive current adjustment step being less than or equal to 1mA.

[0030] Optionally, the constant current control module includes a constant current control chip;

[0031] The switching module includes a switching transistor, the control electrode of the switching transistor serves as the control terminal of the switching module, the first electrode of the switching transistor serves as the first terminal of the switching module, and the second electrode of the switching transistor serves as the second terminal of the switching module.

[0032] The SNS pin of the constant current control chip serves as the second output terminal of the constant current control module; the HG pin of the constant current control chip serves as the first output terminal of the constant current control module and is connected to the gate of the switching transistor, and the HG pin of the constant current control chip is connected to the gate of the switching transistor.

[0033] Optionally, the aging drive circuit further includes a Zener diode, an inductor, and a first capacitor;

[0034] The anode of the Zener diode is connected to the drain of the switching transistor and the CS pin of the constant current control chip, respectively, and the cathode of the Zener diode is grounded.

[0035] The first end of the inductor is connected to the drain of the switching transistor, the second end of the inductor is connected to the first terminal of the output interface, the first end of the first capacitor is connected to the second end of the inductor, and the second end of the first capacitor is connected to the second terminal of the output interface.

[0036] This utility model provides an aging-driven testing device, including the aging-driven circuit provided in any embodiment of this utility model.

[0037] The aging drive circuit provided in this embodiment controls the switching module's on and off states via a constant current control module. When the switching module is on, the output interface outputs a drive current to the light-emitting element under test (LED) connected to the output interface. The LED is connected in series with the adjustment module and then grounded. By adjusting the resistance value of the adjustment module, the drive current value of the circuit containing the LED can be adjusted, thereby enabling the aging drive circuit to adapt to various types of LEDs under test and ensuring the stability of the drive current during aging tests. This improves aging test efficiency and accuracy, while reducing test costs. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of an aging drive circuit provided in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of another aging drive circuit provided in this embodiment of the utility model;

[0041] Figure 3 This is a schematic diagram of another aging drive circuit provided in this embodiment of the utility model;

[0042] Figure 4 This is a schematic diagram of another aging drive circuit provided in this embodiment of the utility model. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0044] Based on the above-mentioned technical problems, this embodiment proposes the following solutions:

[0045] Figure 1 This is a schematic diagram of an aging drive circuit provided in an embodiment of this utility model. See also... Figure 1The circuit includes: a constant current control module 100, a switching module 200, an adjustment module 300, and an output interface 500; the constant current control module 100 is connected to the first power supply terminal VDD, the first output terminal of the constant current control module 100 is connected to the control terminal of the switching module 200, the switching module 200 is connected between the first power supply terminal VDD and the first pole A of the output interface 500, and the constant current control module 100 is used to control the switching module 200 to conduct; the output interface 500 is used to connect the light-emitting element under test; the adjustment module 300 is connected between the second pole B of the output interface 500 and the ground terminal GND, and is connected to the second output terminal of the constant current control module 100, and the adjustment module 300 is used to adjust the drive current I of the output interface 500.

[0046] Specifically, the light-emitting element under test can be an OLED panel from an automotive OLED taillight. During aging tests, the positive terminal of the OLED panel can be connected to the first terminal A of the aging drive circuit output interface 500, and the negative terminal of the OLED panel can be connected to the second terminal B of the aging drive circuit output interface 500. The constant current control module 100 outputs a control signal through its first output terminal 1 to control the switching module 200 to turn on and off. When the switching module 200 is on, the drive current I is output to the OLED panel connected to the output interface 500. The first power supply terminal VDD can be a DC voltage source, and the constant current control module 100 is connected to the first power supply terminal VDD to power the constant current control module 100. The adjustment module 300 is connected in series with the light-emitting element under test. When the resistance of the adjustment module 300 changes, the current in the circuit containing the adjustment module 300 and the light-emitting element under test will change. Therefore, the magnitude of the drive current I output by the output interface 500 can be adjusted by adjusting the adjustment module 300, so that the aging drive circuit can adapt to different types of light-emitting elements under test.

[0047] The aging drive circuit provided in this embodiment controls the switching module's on and off states via a constant current control module. When the switching module is on, the output interface outputs a drive current to the light-emitting element under test (LED) connected to the output interface. The LED is connected in series with the adjustment module and then grounded. By adjusting the resistance value of the adjustment module, the drive current value of the circuit containing the LED can be adjusted, thereby enabling the aging drive circuit to adapt to various types of LEDs under test and ensuring the stability of the drive current during aging tests. This improves aging test efficiency and accuracy, while reducing test costs.

[0048] Optionally, Figure 2This is a schematic diagram of another aging drive circuit provided in this embodiment of the present invention. The aging drive circuit also includes an alarm module 400, which is connected to the output interface 500. The alarm module 400 is used to generate an alarm signal based on the difference between the drive current I of the output interface 500 and a preset current threshold.

[0049] Specifically, the alarm module 400 can store preset current thresholds adapted to various models of light-emitting elements under test. When the driving current I flowing through the alarm module 400 exceeds the preset current threshold, the driving current I output by the aging driving circuit cannot meet the aging test conditions for that model of light-emitting element under test, which can easily lead to large errors in the test results. At this time, the alarm module 400 issues an alarm signal to prompt the test personnel to intervene in a timely manner and improve the accuracy of the aging test results.

[0050] Optionally, Figure 3 This is a schematic diagram of another aging drive circuit provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 3 The alarm module 400 includes: a data acquisition unit 410, a comparison unit 420, and an alarm unit 430; the data acquisition unit 410 is connected to the first terminal A of the output interface 500, and is used to acquire the drive current I of the output interface 500; the comparison unit 420 is connected to both the data acquisition unit 410 and the alarm unit 430, and is used to compare the drive current I with a preset current threshold, and control the alarm unit 430 to issue an alarm based on the comparison result.

[0051] Specifically, the acquisition unit 410 may include a sampling resistor. The first terminal of the acquisition unit 410 can be connected to the first terminal of the switching module 200, and the second terminal of the acquisition unit 410 can be connected to the first terminal A of the output interface 500 and the comparison unit 420, respectively. When the drive current I flows through the acquisition unit 410, a voltage drop proportional to the drive current I is generated. The comparison unit 420 can obtain the difference between the potential value of the second terminal of the acquisition unit 410 and the voltage value output by the first terminal of the switching module 200 through the potential value of the second terminal of the acquisition unit 410. This voltage difference is the voltage drop across the acquisition unit 410, and the magnitude of the drive current I flowing through the acquisition unit 410 can be determined based on this voltage drop and the resistance value of the sampling resistor. A memory may be provided within the comparison unit 420, which can store a preset current threshold. When the drive current I flowing through the acquisition unit 410 exceeds the preset current threshold, the comparison unit 420 controls the alarm unit 430 to issue an alarm, facilitating timely intervention and improving the reliability of the aging test.

[0052] Optionally, based on the above embodiments, see below. Figure 3The acquisition unit 410 includes a first resistor R1; the comparison unit 420 includes a comparator COMP; the first end of the first resistor R1 is connected to the first end of the switch module 200, the second end of the switch module 200 is connected to the first power supply terminal VDD, and the second end of the first resistor R1 is connected to the first terminal A of the output interface 500. The first resistor R1 is used to acquire the drive current I; the first input terminal of the comparator COMP is connected to the second end of the first resistor R1, and the second input terminal of the comparator COMP is connected to the reference signal input terminal. The comparator COMP is used to compare the electrical signal at the first input terminal with the reference signal at the second input terminal. When the drive current is greater than a preset current threshold, the comparator generates a first level signal.

[0053] Specifically, a first resistor R1 is connected in series between the first terminal of the switch module 200 and the first terminal A of the output interface 500. The first terminal of the first resistor R1 can be connected to the first terminal of the switch module 200, and the second terminal of the first resistor R1 can be connected to the first terminal A of the output interface 500 and the first input terminal of the comparator COMP, respectively. When the drive current I flows through the first resistor R1, a voltage drop proportional to the drive current I is generated. By acquiring the potential value of the second terminal of the first resistor R1, the difference between the potential value of the second terminal of the first resistor R1 and the voltage value output by the first terminal of the switch module 200 can be obtained. This voltage difference is the voltage drop across the first resistor R1, and the magnitude of the drive current I flowing through the first resistor R1 can be determined based on this voltage drop and the resistance value of the first resistor R1. A reference signal is connected to the second input terminal of the comparator COMP, which may include the voltage value output by the first terminal of the switch module 200. This allows the comparator COMP to compare the drive current I with a preset current threshold. When the drive current exceeds the preset current threshold, the comparator COMP generates a first level signal. The first level signal controls the alarm unit 430 to issue an alarm.

[0054] Optionally, based on the above embodiments, see below. Figure 3 Alarm unit 430 includes at least one of an audible alarm, a visual alarm, and a display alarm; alarm unit 430 is used to issue an alarm based on a first level signal.

[0055] Specifically, when the alarm unit 430 is an audible alarm, the comparison unit 420 can control the alarm unit 430 to provide an audible alarm prompt. When the alarm unit 430 is a visual alarm, the comparison unit 420 can control the alarm indicator light to flash to provide an alarm prompt. When the alarm unit 430 is a display alarm, the comparison unit 420 can control the alarm unit 430 to display the current drive current value to provide an alarm prompt. The alarm unit 430 may include one or more of the following: audible alarm, visual alarm, and display alarm. This embodiment does not specifically limit the type of alarm included in the alarm unit 430. For example, as... Figure 2 As shown, the alarm unit 430 is exemplarily configured as a buzzer. When the drive current I output by the output interface 500 exceeds a preset current threshold, the comparator COMP generates a first-level signal to control the buzzer to sound, providing an alarm notification.

[0056] Optionally, based on the above embodiments, see below. Figure 3 The adjustment module 300 includes at least one potentiometer RP, the first end of which is connected to the second terminal B of the output interface 500 and the second output terminal 2 of the constant current control module 100, and the second end of which is connected to the ground terminal GND; the resistance of the potentiometer RP is adjustable.

[0057] Specifically, in one embodiment, the adjustment module 300 can be configured as a potentiometer RP. The first terminal of the potentiometer RP is connected to the second terminal B of the output interface 500, and the second terminal is connected to the ground terminal GND, meaning the potentiometer RP is connected in series with the light-emitting element under test. When the resistance value of the potentiometer RP changes, the driving current I in the circuit containing the potentiometer RP and the light-emitting element under test can be changed. Therefore, by changing the resistance value of the adjustment module 300, the magnitude of the driving current I output by the output interface 500 can be changed, thus making it suitable for different types of light-emitting elements under test. The first terminal of the potentiometer RP is also connected to the second output terminal 2 of the constant current control module 100, thereby grounding the constant current control module 100 through the potentiometer RP. The adjustment module 300 can include multiple potentiometers RP, thereby expanding the range of resistance values ​​that the adjustment module 300 can adjust. This embodiment does not specifically limit the number of potentiometers. In related technologies, the adjustment module 300 is typically configured as a surface-mount resistor with a fixed resistance value. When performing aging tests on different types of light-emitting elements under test, the surface-mount resistor needs to be removed and re-soldered. This embodiment saves approximately 3-4 hours of time by setting the adjustment module 300 to use a potentiometer with adjustable resistance, thereby significantly reducing manpower and time costs and improving testing efficiency while reducing the risk of circuit failure caused by removal and resoldering.

[0058] Optionally, based on the above embodiments, see below. Figure 3The resistance value of potentiometer RP is greater than 0Ω and less than or equal to 10Ω; the resistance adjustment step of potentiometer RP is less than or equal to 0.1Ω.

[0059] Specifically, when the resistance of potentiometer RP exceeds 10Ω, the range of drive current output by output interface 500 is small when adjustment module 300 is used, which may result in the inability to cover the drive current values ​​required by all types of LEDs under test. Therefore, by setting the resistance of potentiometer RP to be greater than 0Ω and less than or equal to 10Ω, the range of drive current I output by output interface 500 can be expanded to meet the aging drive current test requirements of various types of LEDs under test, thereby improving test efficiency, enhancing the applicability of the aging test circuit, and reducing the time and material costs of replacing aging test boards during the aging test process. Setting the resistance adjustment step of potentiometer RP to less than or equal to 0.1Ω can improve the uniformity of resistance changes in adjustment module 300, thereby improving test accuracy.

[0060] Optionally, the potentiometer RP has an adjustable resistance to control the drive current to be greater than or equal to 35.2mA and less than or equal to 0.63A, with the drive current adjustment step being less than or equal to 1mA.

[0061] Specifically, this configuration facilitates testing of various types of automotive OLED LED panels, with drive currents ranging from 35.2mA to 0.63A. Therefore, by adjusting the resistance of potentiometer RP, the drive current output from interface 500 is made greater than or equal to 35.2mA and less than or equal to 0.63A. This covers all current requirements for aging tests of different types of OLED panels, allowing a single aging drive circuit to handle all OLED panel models. This avoids the need to purchase new aging drive boards or perform disassembly and resoldering for each new OLED panel model, significantly reducing procurement and time costs. The drive current adjustment step is less than or equal to 1mA, improving the uniformity of drive current changes and further enhancing test accuracy.

[0062] Optionally, based on the above embodiments, see below. Figure 3 The adjustment module 300 includes: a first potentiometer RP1 and a second potentiometer RP2. The first end of the first potentiometer RP1 is connected to the first end of the second potentiometer RP2, the second pole B of the output interface 500, and the second output terminal 2 of the constant current control module 100. The second end of the first potentiometer RP1 is connected to the second end of the second potentiometer RP2 and the ground terminal GND. The resistances of the first potentiometer RP1 and the second potentiometer RP2 are both adjustable.

[0063] Specifically, when the adjustment module 300 includes multiple potentiometers, the multiple potentiometers RP can be connected in parallel. For example, as... Figure 2 As shown, the adjustment module 300 includes a first potentiometer RP1 and a second potentiometer RP2. The first potentiometer RP1 and the second potentiometer RP2 can be connected in parallel to further improve the uniformity of the resistance change of the adjustment module 300, thereby improving the test accuracy.

[0064] Optionally, Figure 4 This is a schematic diagram of another aging drive circuit provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 4 The constant current control module 100 includes a constant current control chip U1; the switching module 200 includes a switching transistor P1, the control electrode of the switching transistor P1 serves as the control terminal of the switching module 200, the first electrode of the switching transistor P1 serves as the first terminal of the switching module 200, and the second electrode of the switching transistor P1 serves as the second terminal of the switching module 200.

[0065] Specifically, the constant current control chip U1 can be an LM3401 chip. The LM3401 chip can provide a constant current to the OLED panel by driving the external switching transistor to conduct. The switching transistor P1 can be a MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor). The MOSFET can be precisely controlled to conduct and cut off by changing its gate voltage, achieving fine control of the circuit.

[0066] For example, such as Figure 4 As shown, the switching transistor P1 can be a P-type MOSFET. The control electrode of P1 can be the gate of the P-type MOSFET, the first electrode of P1 can be the drain of the P-type MOSFET, and the second electrode of P1 can be the source of the P-type MOSFET. The second electrode of P1 is connected to the first power supply terminal VDD. The first power supply terminal VDD can be connected to the VIN pin of the constant current control chip U1, and the ground terminal GND can be connected to the GND pin of the constant current control chip U1, thus providing a continuous and stable power supply to the constant current control chip U1. The ILIM pin of the constant current control chip U1 can be connected to the first power supply terminal VDD through a pull-up resistor R2, and the HYS pin of the constant current control chip U1 can be connected to the ground terminal GND through a pull-down resistor R3. The first power supply terminal VDD can also be grounded through multiple capacitors, thereby maintaining a stable voltage connected to the VIN pin of the constant current control chip U1.

[0067] The SNS pin of the constant current control chip U1 can be used as the second output terminal 2 of the constant current control module 100. The HG pin of the constant current control chip U1 can be used as the first output terminal 1 of the constant current control module 100 and connected to the gate of the switching transistor P1. When the HG pin outputs a low level, the switching transistor P1 is turned on, and the drive current flows through the switching transistor P1 through the alarm module 400 to light up the light-emitting element under test for aging test.

[0068] In addition, the aging drive circuit can also include a Zener diode D. The anode of the Zener diode D is connected to the drain of the switching transistor P1 and the CS pin of the constant current control chip U1, while the cathode of the Zener diode D is grounded. The Zener diode D can be used to control the voltage of the circuit containing the light-emitting element under test to remain stable.

[0069] Furthermore, the aging drive circuit can also include an inductor L and a first capacitor C1. The first end of the inductor L is connected to the drain of the switching transistor P1, and the second end of the inductor L is connected to the first terminal A of the output interface. The first end of the first capacitor C1 is connected to the second end of the inductor L, and the second end of the first capacitor C1 is connected to the second terminal B of the output interface. When the aging drive circuit includes an alarm module 400, the second end of the inductor L is connected to the first terminal A of the output interface through the alarm module 400. The inductor L and the first capacitor C1 can form an LC filter circuit to filter the drive signal output to the light-emitting element under test, reduce ripple current, and prevent the light-emitting element under test from flickering during testing.

[0070] This utility model provides an aging-driven testing device, which includes the aging-driven circuit provided in any embodiment of this utility model and has the same beneficial effects as the aging-driven circuit provided in any embodiment of this utility model, and will not be described again here.

[0071] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An aging drive circuit, characterized in that, include: Constant current control module, switching module, regulating module, and output interface; The constant current control module is connected to the first power supply terminal, the first output terminal of the constant current control module is connected to the control terminal of the switch module, the switch module is connected between the first power supply terminal and the first pole of the output interface, and the constant current control module is used to control the switch module to conduct; the output interface is connected to the light-emitting element under test. The adjustment module is connected between the second pole and the ground terminal of the output interface, and is connected to the second output terminal of the constant current control module. The adjustment module is used to adjust the drive current of the output interface.

2. The aging drive circuit according to claim 1, characterized in that, The aging drive circuit also includes an alarm module, which is connected to the output interface. The alarm module is used to generate an alarm signal based on the difference between the drive current of the output interface and a preset current threshold.

3. The aging drive circuit according to claim 2, characterized in that, The alarm module includes: The system comprises an acquisition unit, a comparison unit, and an alarm unit. The acquisition unit is connected to the first pole of the output interface, and the acquisition unit is used to acquire the drive current of the output interface; The comparison unit is connected to the acquisition unit and the alarm unit respectively. The comparison unit is used to compare the driving current with the preset current threshold, and control the alarm unit to issue an alarm based on the comparison result.

4. The aging drive circuit according to claim 3, characterized in that, The acquisition unit includes a first resistor; The comparison unit includes a comparator; The first end of the first resistor is connected to the first end of the switching module, the second end of the switching module is connected to the first power supply terminal, the second end of the first resistor is connected to the first pole of the output interface, and the first resistor is used to collect the drive current. The first input terminal of the comparator is connected to the second terminal of the first resistor, and the second input terminal of the comparator is connected to the reference signal input terminal. The comparator is used to compare the electrical signal at the first input terminal with the reference signal at the second input terminal. When the driving current is greater than a preset current threshold, the comparator generates a first level signal. The alarm unit includes at least one of an audible alarm, a visual alarm, and a display alarm; The alarm unit is used to issue an alarm based on the first level signal.

5. The aging drive circuit according to claim 1, characterized in that, The adjustment module includes: At least one potentiometer, wherein a first terminal of the potentiometer is connected to a second terminal of the output interface and a second output terminal of the constant current control module, and a second terminal of the potentiometer is connected to a ground terminal; The resistance of the potentiometer is adjustable.

6. The aging drive circuit according to claim 5, characterized in that, The resistance value of the potentiometer is greater than 0Ω and less than or equal to 10Ω; The potentiometer's resistance adjustment step is less than or equal to 0.1Ω; The potentiometer is adjustable to control the driving current to be greater than or equal to 35.2mA and less than or equal to 0.63A, and the current adjustment step of the driving current is less than or equal to 1mA.

7. The aging drive circuit according to claim 5, characterized in that, The adjustment module includes: A first potentiometer and a second potentiometer, wherein the first terminal of the first potentiometer is connected to the first terminal of the second potentiometer, the second terminal of the output interface, and the second output terminal of the constant current control module, and the second terminal of the first potentiometer is connected to the second terminal of the second potentiometer and the ground terminal; The resistances of both the first potentiometer and the second potentiometer are adjustable.

8. The aging drive circuit according to claim 1, characterized in that, The constant current control module includes a constant current control chip; The switching module includes a switching transistor, the control electrode of the switching transistor serves as the control terminal of the switching module, the first electrode of the switching transistor serves as the first terminal of the switching module, and the second electrode of the switching transistor serves as the second terminal of the switching module. The SNS pin of the constant current control chip serves as the second output terminal of the constant current control module; the HG pin of the constant current control chip serves as the first output terminal of the constant current control module and is connected to the gate of the switching transistor, and the HG pin of the constant current control chip is connected to the gate of the switching transistor.

9. The aging drive circuit according to claim 8, characterized in that, The aging drive circuit also includes a Zener diode; The anode of the Zener diode is connected to the drain of the switching transistor and the CS pin of the constant current control chip, respectively, and the cathode of the Zener diode is grounded. The aging drive circuit also includes an inductor and a first capacitor; The first end of the inductor is connected to the drain of the switching transistor, the second end of the inductor is connected to the first terminal of the output interface, the first end of the first capacitor is connected to the second end of the inductor, and the second end of the first capacitor is connected to the second terminal of the output interface.

10. An aging-driven testing device, characterized in that, Includes the aging drive circuit as described in any one of claims 1 to 9.

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