Solid state relay and abnormal state restart method thereof

Abstract

This invention discloses a solid-state relay and its abnormal state restart method. The solid-state relay includes: a high-side switch; a first resistor, the first end of which is connected to the fault diagnosis feedback pin of the high-side switch, and the second end of which is grounded; and a control switch module, the first end of which is connected to the input terminal of the high-side switch, the second end of which is grounded, and the third end of which is connected to the first end of the first resistor. The control switch module is used to control the conduction and cutoff between the first end and the second end of the control switch module according to the voltage at the third end of the control switch module. In this invention, the solid-state relay provides a reset signal through its internal control switch module, eliminating the need for a microcontroller. This reduces the size of the solid-state relay while retaining its automatic restart function after an abnormal state ends, thus reducing the manufacturing cost of the solid-state relay.

Description

Technical Field

[0001] This invention relates to solid-state relay technology, and more particularly to a solid-state relay and a method for restarting it in an abnormal state. Background Technology

[0002] With economic and technological development, the automotive industry has also flourished. Currently, relays are commonly used in automotive electrical distribution boxes to achieve power distribution. Relays use mechanical structures to turn circuits on and off, and after repeated use, they can experience arcing and other defects. Compared to solid-state relays made of semiconductor devices, mechanical relays have shorter lifespans, lower reliability, longer operating times, and greater electromagnetic interference.

[0003] Therefore, using solid-state relays (SSRs) is a more ideal choice for automotive power distribution boxes. However, after triggering overcurrent, short-circuit, or over-temperature protection on the high-side switch, the output of the SSR is automatically turned off and latched into an off state. A reset is required to reopen the output. Typically, the reset control signal is provided by the microcontroller inside the SSR. However, due to space limitations within automotive power distribution boxes, the microcontroller cannot fit inside the SSR. This results in the SSR output remaining off after the high-side switch protection is triggered, preventing it from outputting current. Summary of the Invention

[0004] This invention provides a solid-state relay and its abnormal state restart method, which reduces the size of the solid-state relay while retaining the function of automatically restarting the solid-state relay after the abnormal state ends. This reduces the manufacturing cost of the solid-state relay.

[0005] In a first aspect, embodiments of the present invention provide a solid-state relay, comprising:

[0006] High-side switch;

[0007] A first resistor, the first end of which is connected to the fault diagnosis feedback pin of the high-side switch, and the second end of which is grounded;

[0008] A control switch module, wherein a first terminal of the control switch module is connected to the input terminal of the high-side switch, a second terminal of the control switch module is grounded, and a third terminal of the control switch module is connected to the first terminal of the first resistor. The control switch module is used to control the conduction and cutoff between the first terminal and the second terminal of the control switch module according to the voltage of the third terminal of the control switch module.

[0009] A control-side input terminal is connected to the first end of the control switch module;

[0010] The control-side output terminal is grounded.

[0011] A load-side input terminal is provided, which is connected to the power supply terminal of the high-side switch.

[0012] The load-side output terminal is connected to the output terminal of the high-side switch.

[0013] Optionally, the control switch module includes a transistor and a first Zener diode;

[0014] The input terminal of the transistor is connected to the input terminal of the high-side switch, the output terminal of the transistor is grounded, the control terminal of the transistor is connected to the positive terminal of the first Zener diode, and the negative terminal of the first Zener diode is connected to the first terminal of the first resistor.

[0015] Optionally, the control switch module includes a MOSFET;

[0016] The first terminal of the MOSFET is connected to the input terminal of the high-side switch, the second terminal of the MOSFET is grounded, and the control terminal of the MOSFET is connected to the first terminal of the first resistor.

[0017] Optionally, the control switch module further includes a first Zener diode;

[0018] The control terminal of the MOS transistor is connected to the positive terminal of the first Zener diode, and the negative terminal of the first Zener diode is connected to the first terminal of the first resistor.

[0019] Optionally, a second resistor and a first capacitor may also be included;

[0020] The first end of the second resistor is connected to the first end of the first resistor, the second end of the second resistor is connected to the first end of the first capacitor and the third end of the control switch module, and the second end of the first capacitor is connected to the second end of the first resistor.

[0021] Optionally, a third resistor and a fourth resistor may also be included;

[0022] The first end of the third resistor is connected to the load-side input terminal and the power supply terminal of the high-side switch, the second end of the third resistor is connected to the first end of the fourth resistor and the enable terminal of the high-side switch, and the second end of the fourth resistor is grounded.

[0023] Optionally, a second Zener diode may also be included;

[0024] The negative terminal of the second Zener diode is connected to the enable terminal of the high-side switch, and the positive terminal of the second Zener diode is grounded.

[0025] Optionally, a fifth resistor may also be included;

[0026] The first end of the fifth resistor is connected to the third end of the control switch module, and the second end of the fifth resistor is grounded.

[0027] Optionally, a third Zener diode and a second capacitor may also be included;

[0028] The first end of the third Zener diode and the first end of the second capacitor are both connected to the load-side input terminal, and the second end of the third Zener diode and the second end of the second capacitor are both grounded.

[0029] Secondly, embodiments of the present invention also provide a method for restarting a solid-state relay in an abnormal state, applicable to any of the solid-state relays described above, wherein the method for restarting a solid-state relay in an abnormal state includes:

[0030] The fault diagnosis feedback pin of the high-side switch outputs feedback current;

[0031] The control switch module turns on when it receives the feedback current, and the input terminal of the high-side switch is grounded to generate a reset signal;

[0032] If the fault diagnosis feedback pin of the high-side switch is at the first level after the reset signal is held for a preset time, it will enter the normal working state.

[0033] The solid-state relay provided in this embodiment of the invention includes: a high-side switch; a first resistor, the first end of which is connected to the fault diagnosis feedback pin of the high-side switch, and the second end of which is grounded; a control switch module, the first end of which is connected to the input terminal of the high-side switch, the second end of which is grounded, and the third end of which is connected to the first end of the first resistor. The control switch module is used to control the conduction and cutoff between the first and second ends of the control switch module according to the voltage at the third end of the control switch module; a control-side input terminal connected to the first end of the control switch module; a control-side output terminal grounded; a load-side input terminal connected to the power supply terminal of the high-side switch; and a load-side output terminal connected to the output terminal of the high-side switch. In this embodiment of the invention, the solid-state relay provides a reset signal through the internal control switch module, eliminating the need for a microcontroller. This reduces the size of the solid-state relay while retaining the function of automatically restarting after an abnormal state ends, thus reducing the manufacturing cost of the solid-state relay. Attached Figure Description

[0034] Figure 1 A schematic diagram of a solid-state relay provided in an embodiment of the present invention;

[0035] Figure 2This is a schematic diagram of another solid-state relay provided in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of another solid-state relay provided in an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of another solid-state relay provided in an embodiment of the present invention;

[0038] Figure 5 A flowchart illustrating an abnormal state restart method for a solid-state relay provided in an embodiment of the present invention;

[0039] Figure 6 This is a circuit simulation waveform diagram provided for an embodiment of the present invention. Detailed Implementation

[0040] 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 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, and not all of the structures.

[0041] Figure 1 A schematic diagram of a solid-state relay provided in an embodiment of the present invention is shown below. Figure 1 This invention provides a solid-state relay, comprising:

[0042] High-side switch U1;

[0043] The first resistor R1 has its first end connected to the fault diagnosis feedback pin IS of the high-side switch, and its second end grounded.

[0044] Control switch module 1, the first terminal of control switch module 1 is connected to the input terminal IN of the high-side switch, the second terminal of control switch module 1 is grounded, and the third terminal of control switch module 1 is connected to the first terminal of the first resistor R1. Control switch module 1 is used to control the conduction and cutoff between the first terminal and the second terminal of control switch module 1 according to the voltage of the third terminal of control switch module 1.

[0045] Control side input terminal J1 is connected to the first terminal of control switch module 1;

[0046] Control side output terminal J2 is grounded;

[0047] Load-side input terminal J3 is connected to the power supply terminal VS of the high-side switch;

[0048] The load-side output terminal J4 is connected to the output terminal OUT of the high-side switch.

[0049] In this embodiment of the invention, the high-side switch U1 can be any type of high-side switch chip, and the embodiment does not limit the specific model. The control-side input terminal J1 can be connected to an external controller, which provides control signals to the control-side input terminal J1. Both the control-side output terminal J2 and the ground terminal GND of the high-side switch are grounded. The load-side input terminal J3 can be connected to the vehicle power supply, and the load-side output terminal J4 can be connected to the load. When the high-side switch U1 is in normal operating condition, the level of its input terminal IN is synchronized with the level of the control-side input terminal J1 of the solid-state relay. When the input terminal IN of the high-side switch is high, the output terminal OUT of the high-side switch outputs current; when the input terminal IN of the high-side switch is low, the output terminal OUT of the high-side switch stops outputting current. The voltage values ​​corresponding to the high and low levels can be determined according to actual needs. When the high-side switch U1 experiences overcurrent, short circuit to ground, or overtemperature faults, the high-side switch U1 enters a protection state. The output terminal OUT of the high-side switch is automatically turned off. The fault diagnosis feedback pin IS of the high-side switch outputs a feedback current, which flows through the first resistor R1, forming a feedback voltage across the first resistor R1. The feedback voltage provides a high level to the third terminal of the control switch module 1. The high level enables conduction between the first and second terminals of the control switch module 1, thereby grounding the input terminal IN of the high-side switch, forming a low level. After a preset time in the low-level state, the input terminal IN of the high-side switch triggers the high-side switch U1 to reset. The preset time can be determined according to the model of the high-side switch U1. After the high-side switch U1 is reset, it checks whether it is in a fault state such as overcurrent, short circuit to ground, or overtemperature. If so, the above steps are repeated. If not, the high-side switch U1 starts to work normally. In this embodiment of the invention, the solid-state relay provides a reset signal through the internal control switch module 1, eliminating the need for a microcontroller. This reduces the size of the solid-state relay while retaining the function of automatically restarting after the abnormal state ends, thus reducing the manufacturing cost of the solid-state relay.

[0050] See also Figure 1 In other embodiments, the control switch module 1 includes a transistor Q1 and a first Zener diode Z1;

[0051] The input terminal of transistor Q1 is connected to the input terminal IN of the high-side switch, the output terminal of transistor Q1 is grounded, the control terminal of transistor Q1 is connected to the positive terminal of the first Zener diode Z1, and the negative terminal of the first Zener diode Z1 is connected to the first terminal of the first resistor R1.

[0052] The breakdown voltage of the first Zener diode Z1 can be determined according to actual needs. Transistor Q1 can be an NPN transistor; its input terminal can be its collector, its output terminal can be its emitter, and its control terminal can be its base. When the high-side switch U1 is in a fault state, the feedback voltage of the fault diagnosis feedback pin IS is higher than the voltage across the Zener diode plus the required turn-on voltage for the base of transistor Q1, turning on transistor Q1 and pulling the IN pin low. Until the high-side switch U1 returns to normal, the feedback voltage of the fault diagnosis feedback pin IS is lower than the voltage across the Zener diode plus the required turn-on voltage for the base of transistor Q1, turning off transistor Q1. This achieves the control of the switching module 1's on / off state.

[0053] Figure 2 A schematic diagram of another solid-state relay provided in an embodiment of the present invention is shown below. Figure 2 In other embodiments, the control switch module 1 includes a MOSFET M1;

[0054] The first terminal of MOSFET M1 is connected to the input terminal IN of the high-side switch, the second terminal of MOSFET M1 is grounded, and the control terminal of MOSFET M1 is connected to the first terminal of the first resistor R1.

[0055] In this circuit, MOSFET M1 can be an N-type MOSFET. The first terminal of MOSFET M1 can be the source, the second terminal can be the drain, and the control terminal can be the gate. Alternatively, the first terminal of MOSFET M1 can be the drain, the second terminal can be the source, and the control terminal can be the gate. When the high-side switch U1 is in a fault state, the feedback voltage of the fault diagnosis feedback pin IS is higher than the sum of the source voltage and the turn-on voltage of the MOSFET, causing MOSFET M1 to conduct and the IN pin potential to be pulled low. This continues until the high-side switch U1 returns to normal operation, at which point the feedback voltage of the fault diagnosis feedback pin IS falls below the sum of the source voltage and the turn-on voltage of the MOSFET, causing MOSFET M1 to turn off. This achieves the control of the switching module 1's on / off state.

[0056] Figure 3 A schematic diagram of another solid-state relay provided in an embodiment of the present invention is shown below. Figure 3 Based on the previous embodiment, the control switch module 1 further includes a first Zener diode Z1;

[0057] The control terminal of the MOSFET is connected to the positive terminal of the first Zener diode Z1, and the negative terminal of the first Zener diode Z1 is connected to the first terminal of the first resistor R1.

[0058] The breakdown voltage of the first Zener diode Z1 can be determined according to actual needs. The operating voltage point for the MOSFET M1 to turn on and off can be adjusted by selecting the appropriate Zener diode Z1. When the high-side switch U1 is in a fault state, the feedback voltage of the fault diagnosis feedback pin IS is higher than the sum of the source voltage of the MOSFET, the turn-on voltage of the MOSFET, and the voltage across the first Zener diode Z1. Therefore, the MOSFET M1 turns on, and the IN pin potential is pulled low. This continues until the high-side switch U1 returns to normal, at which point the feedback voltage of the fault diagnosis feedback pin IS falls below the sum of the source voltage of the MOSFET, the turn-on voltage of the MOSFET, and the voltage across the first Zener diode Z1, and the MOSFET M1 turns off. This achieves the control of the switching module 1's on and off states.

[0059] Figure 4 A schematic diagram of another solid-state relay provided in an embodiment of the present invention is shown below. Figure 4 In other embodiments, a second resistor R2 and a first capacitor C1 are also included;

[0060] The first end of the second resistor R2 is connected to the first end of the first resistor R1. The second end of the second resistor R2 is connected to the first end of the first capacitor C1 and the third end of the control switch module 1. The second end of the first capacitor C1 is connected to the second end of the first resistor R1.

[0061] The resistance value of the second resistor R2 and the capacitance value of the first capacitor C1 can be determined according to actual needs. By connecting the filter circuit composed of the series-connected second resistor R2 and first capacitor C1 in parallel across the first resistor R1, the jitter of the feedback voltage across the first resistor R1 can be suppressed. This provides a high-quality feedback voltage to the control switch module 1, improving the stability and reliability of the system.

[0062] See also Figure 1-4 In other embodiments, a third resistor R3 and a fourth resistor R4 are also included;

[0063] The first end of the third resistor R3 is connected to the load-side input terminal J3 and the power supply terminal VS of the high-side switch. The second end of the third resistor R3 is connected to the first end of the fourth resistor R4 and the enable terminal DEN of the high-side switch. The second end of the fourth resistor R4 is grounded.

[0064] When the enable terminal DEN of the high-side switch is high, the high-side switch U1 activates its diagnostic function to self-diagnose whether it is in a faulty state. The resistance values ​​of the third resistor R3 and the fourth resistor R4 can be determined according to actual needs. A voltage divider is created using R3 and R4 to obtain a suitable voltage as a high level at the enable terminal DEN of the high-side switch, thus keeping the diagnostic function of the high-side switch always enabled. By setting these two voltage divider resistors, R3 and R4, a separate power supply for supplying a high level to the enable terminal DEN of the high-side switch is eliminated, saving costs and further reducing the size of the solid-state relay.

[0065] See also Figure 1-4 Based on the previous embodiment, a second Zener diode Z2 is also included;

[0066] The negative terminal of the second Zener diode Z2 is connected to the enable terminal DEN of the high-side switch, and the positive terminal of the second Zener diode Z2 is grounded.

[0067] Among them, a Zener diode with a breakdown voltage slightly higher than the high-level voltage of the enable terminal DEN of the high-side switch can be selected as the second Zener diode Z2. When the fourth resistor R4 is open-circuited, or the voltage of the load-side input terminal J3 is too high, the second Zener diode Z2 breaks down to reduce the voltage of the enable terminal DEN of the high-side switch, thereby preventing the high-side switch U1 from being damaged by excessively high voltage and improving the stability and reliability of the solid-state relay.

[0068] See also Figure 1-4 In other embodiments, a fifth resistor R5 is also included;

[0069] The first end of the fifth resistor R5 is connected to the third end of the control switch module 1, and the second end of the fifth resistor R5 is grounded.

[0070] The resistance value of the fifth resistor R5 can be determined according to actual needs. The fifth resistor R5 allows for the rapid release of charge at the third terminal of control switch module 1. When the third terminal of control switch module 1 changes from a high level to a low level, the fifth resistor R5 serves as a rapid discharge path for the charge at the third terminal of control switch module 1, thereby improving the response speed of control switch module 1.

[0071] See also Figure 1-4 In other embodiments, a third Zener diode Z3 and a second capacitor C2 are also included;

[0072] The first terminal of the third Zener diode Z3 and the first terminal of the second capacitor C2 are both connected to the load-side input terminal J3, and the second terminal of the third Zener diode Z3 and the second terminal of the second capacitor C2 are both grounded.

[0073] The breakdown voltage of the third Zener diode Z3 and the capacitance value of the second capacitor C2 can be determined according to actual needs. The third Zener diode Z3 can prevent the voltage at the load-side input terminal J3 from being too high, which could damage the solid-state transformer. The second capacitor C2 can filter the voltage at the load-side input terminal J3, making the voltage at the load-side input terminal J3 more stable.

[0074] See also Figure 1-4 In other embodiments, a sixth resistor R6 and a third capacitor C3 are also included;

[0075] The first terminal of the sixth resistor R6 and the first terminal of the third capacitor C3 are both connected to the output terminal OUT of the high-side switch, and the second terminals of the sixth resistor R6 and the third capacitor C3 are both grounded. The voltage at the load-side output terminal J4 can be filtered through the sixth resistor R6 and the third capacitor C3 to reduce voltage fluctuations at the load-side output terminal J4.

[0076] Figure 5 A flowchart illustrating an abnormal state restart method for a solid-state relay provided in an embodiment of the present invention is shown below. Figure 4 and Figure 5 On the other hand, embodiments of the present invention also provide a method for restarting a solid-state relay in an abnormal state, applicable to any of the solid-state relays described in the above embodiments of the present invention. The method for restarting a solid-state relay in an abnormal state includes:

[0077] S1: The fault diagnosis feedback pin IS of the high-side switch outputs feedback current;

[0078] S2: When the control switch module 1 receives the feedback current, it turns on, the input terminal IN of the high-side switch is grounded, and a reset signal is generated;

[0079] S3: After the reset signal is held for a preset time, if the fault diagnosis feedback pin IS of the high-side switch is at the first level, then it enters the normal working state.

[0080] The first level refers to the level of the fault diagnosis feedback pin IS of the high-side switch U1 when it is in normal operating condition, which can be determined by measurement. Under normal operating conditions, the current output by the fault diagnosis feedback pin IS of the high-side switch is directly proportional to the current at the output terminal OUT of the high-side switch. Therefore, the current output by the fault diagnosis feedback pin IS is relatively small, and the first level after conversion by the first resistor R1 is also relatively small, which is insufficient to turn on the control switch module 1. The control switch module 1 in the off state has no effect on the input terminal IN voltage of the high-side switch, so it will not affect the normal operation of the high-side switch U1.

[0081] When an overcurrent, short circuit to ground, or overtemperature fault occurs at the output terminal OUT of the high-side switch, the high-side switch U1 enters a protection state, and the output terminal OUT is automatically turned off. The fault diagnosis feedback pin IS outputs a feedback current. This feedback current is greater than the current output by the high-side switch under normal operating conditions. After being converted by the first resistor R1, the feedback current forms a large feedback voltage across the first resistor R1. The voltage at the fault diagnosis feedback pin IS is greater than the turn-on voltage required by the control switch module 1, and the control switch module 1 is turned on, pulling the input terminal IN of the high-side switch low. If the high-side switch U1 is not reset, the fault diagnosis feedback pin IS continuously outputs a feedback current, thus the control switch module 1 remains on, and the input terminal IN remains continuously pulled low. After the input terminal IN has been continuously pulled low for a preset time (e.g., 70 milliseconds), the high-side switch U1 is reset. If, after the high-side switch U1 is reset, the overcurrent, short circuit to ground, or overtemperature fault at the output terminal OUT is still not resolved, the high-side switch U1 enters a protection state again, waiting for the next restart. If the high-side switch U1 is reset, the faults such as overcurrent, short circuit to ground, or overheating of the high-side switch at the output terminal OUT have been resolved, and the high-side switch U1 enters normal working state.

[0082] Figure 6 A circuit simulation waveform diagram provided for an embodiment of the present invention, see [link to diagram]. Figure 4 and Figure 6 The following section will illustrate an example of a method for restarting a solid-state relay under abnormal conditions, using circuit simulation waveforms.

[0083] Where V(IN) represents the voltage at the input terminal IN, V(DEN) represents the voltage at the enable terminal DEN, V(IS) represents the voltage at the fault diagnosis feedback pin IS, and V(OUT) represents the voltage at the output terminal OUT. When the external power supply is normal, the enable terminal DEN remains high. After the input terminal IN is high, the output terminal OUT outputs normally. 40ms after power-on (corresponding to the horizontal axis of the simulation waveform at 40ms), a short-circuit fault to ground occurs at the output terminal OUT. The high-side switch U1 enters a fault state, and the output terminal OUT is automatically turned off. The fault diagnosis feedback pin IS remains high, causing transistor Q1 to turn on and continuously pull the input terminal IN low. After 70ms (corresponding to the horizontal axis of the simulation waveform at 110ms), the high-side switch U1 is reset. Since the short-circuit fault to ground at the output terminal OUT has not yet been cleared, the high-side switch U1 enters a fault state again, waiting for the next restart. During the entire simulation cycle, the high-side switch U1 undergoes three restarts (corresponding to the horizontal axes of the simulation waveform at 110ms, 180ms, and 250ms). After the third restart, the short-circuit fault to ground is cleared, and the high-side switch U1 enters normal operation after the fourth restart (corresponding to the horizontal axis of the simulation waveform at 320ms).

[0084] 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, combinations, 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 which is determined by the scope of the appended claims.

Claims

1. A solid state relay characterized by, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

2. The solid state relay of claim 1, wherein, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

3. The solid state relay of claim 1, wherein, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

4. The solid state relay of claim 3, wherein, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

5. The solid state relay of claim 1, wherein, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

6. The solid state relay of claim 1, wherein, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

7. The solid state relay of claim 1, wherein, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

8. The solid state relay of claim 1, wherein, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

9. The solid state relay of claim 1, wherein, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof.

10. An abnormal state restart method of a solid state relay, characterized by, The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. 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The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to a solid-state relay and a restart method thereof. The application relates to The fault diagnosis feedback pin of the high-side switch outputs a feedback current; A control switch module is opened when the feedback current is received, an input end of the high-side switch is grounded, and a reset signal is generated; After the reset signal is maintained for a preset time, if the fault diagnosis feedback pin of the high-side switch is at a first level, a normal working state is entered.

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