Surge absorption device

Abstract

The utility model discloses a surge absorption device which comprises a rectification module, an absorption module, a discharge module and a control module. The rectifier module is connected with an alternating-current electric signal and is used for converting the alternating-current electric signal into a direct-current electric signal; the absorption module is connected with the rectification module and is used for storing energy according to the direct current signal output by the rectification module and generating a first voltage signal; the discharge module is connected with the absorption module in parallel, the control module is connected with the absorption module, the absorption module is further used for absorbing the surge electric signal and generating a second voltage signal, and the control module is used for detecting the surge electric signal in the module; the discharge module is used for discharging the second voltage signal generated by the absorption module. The surge absorption device provided by the utility model can enable the residual voltage in the circuit to be lower.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit design technical field especially relates to a surge absorption device. BACKGROUND

[0002] For the power equipment connected to the power grid, especially high-power power equipment, the problem of surge current and voltage impact will be faced, in order to avoid the equipment being damaged by the surge, the professional surge protector will be generally used.

[0003] At present, the commonly used surge absorption element of the professional surge protector includes ceramic gas discharge tube, voltage-dependent resistor and the like, however, the two commonly used surge absorption elements have higher residual voltage. SUMMARY

[0004] The utility model provides a kind of surge absorption device to solve the problem of higher residual voltage of surge absorption device in prior art.

[0005] According to an aspect of the utility model, a kind of surge absorption device is provided, including rectifier module, absorption module, discharge module and control module;

[0006] The rectifier module is connected to AC signal, and the rectifier module is used to convert the AC signal into DC signal;

[0007] The absorption module is connected to the rectifier module, and the absorption module is used to store energy according to the DC signal output by the rectifier module and generate first voltage signal;

[0008] The discharge module is connected in parallel with the absorption module, and the control module is connected to the absorption module, and the absorption module is also used to absorb surge signal and generate second voltage signal, and the control module is used to detect the surge signal in the absorption module;The discharge module is used to discharge the second voltage signal generated by the absorption module.

[0009] Optionally, the rectifier module comprises a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a seventh diode and an eighth diode, a first end of the first diode and a second end of the eighth diode are connected to an input end of the rectifier module, a first end of the second diode and a second end of the seventh diode are connected to the input end of the rectifier module, a first end of the third diode and a second end of the sixth diode are connected to the input end of the rectifier module, a first end of the fourth diode and a second end of the fifth diode are connected to the input end of the rectifier module, a second end of the first diode, a second end of the second diode, a second end of the third diode and a second end of the fourth diode are connected to a first output end of the rectifier module, a first end of the fifth diode, a first end of the sixth diode, a first end of the seventh diode and a first end of the eighth diode are connected to a second output end of the rectifier module.

[0010] Optionally, the absorption module comprises a first capacitor, a first end of the first capacitor is connected to the first output end of the rectifier module, and a second end of the first capacitor is connected to the second output end of the rectifier module.

[0011] Optionally, the discharge module comprises a first resistor, a first end of the first resistor is connected to the first end of the first capacitor, and a second end of the first resistor is connected to the second end of the first capacitor.

[0012] Optionally, the surge absorption device further comprises a circuit breaker protection module, a first end of the circuit breaker protection module is connected to the AC power signal, and a second end of the circuit breaker protection module is connected to the rectifier module, and the circuit breaker protection module is used to cut off the circuit when a circuit fault occurs.

[0013] Optionally, the circuit breaker protection module comprises a first fuse, a second fuse, a third fuse and a fourth fuse, a first end of the first fuse is connected to the first end of the circuit breaker protection module, a second end of the first fuse is connected to the second end of the circuit breaker protection module, a first end of the second fuse is connected to the first end of the circuit breaker protection module, a second end of the second fuse is connected to the second end of the circuit breaker protection module, a first end of the third fuse is connected to the first end of the circuit breaker protection module, a second end of the third fuse is connected to the second end of the circuit breaker protection module, a first end of the fourth fuse is connected to the first end of the circuit breaker protection module, and a second end of the fourth fuse is connected to the second end of the circuit breaker protection module.

[0014] Optionally, the surge absorption device further comprises a detection module connected to the circuit breaker protection module and the control module, the detection module being configured to detect a state of the circuit breaker protection module and output a first detection signal, and the control module being further configured to determine the state of the circuit breaker protection module according to the first detection signal.

[0015] Optionally, the detection module comprises a second capacitor, a second resistor, a first optocoupler and a second optocoupler, a first end of the second capacitor being connected to a first end of the circuit breaker protection module, a second end of the second capacitor being connected to a first end of the second resistor, a second end of the second resistor being connected to a first end of the first optocoupler and a second end of the second optocoupler, a second end of the first optocoupler and a first end of the second optocoupler being connected to a second end of the circuit breaker protection module, a third end of the first optocoupler and a third end of the second optocoupler being connected to an output end of the detection module, and a fourth end of the first optocoupler and a fourth end of the second optocoupler being grounded.

[0016] Optionally, the surge absorption device further comprises a sampling module connected to the absorption module and the control module, the sampling module being configured to sample a voltage of the absorption module and output a first sampling signal, and the control module being further configured to detect the surge signal in the absorption module according to the first sampling signal.

[0017] Optionally, the sampling module comprises an analog-to-digital converter.

[0018] The technical scheme of the utility model embodiment provides a kind of surge absorption device, including rectifier module, absorption module, discharge module and control module;Rectifier module is connected to alternating current signal, and rectifier module is used to convert alternating current signal into direct current signal;Absorption module connects rectifier module, and absorption module is used to store energy according to the direct current signal output by rectifier module and generates first voltage signal;Discharge module is connected in parallel with absorption module, and control module connects the absorption module, and absorption module is further used to absorb surge signal and generate second voltage signal, and control module is used to detect the surge signal in the module;Discharge module is used to discharge the second voltage signal generated by absorption module. Wherein, according to the characteristics of the protected equipment in the rear stage, the absorption module can be set, so that the second voltage signal generated after the absorption module absorbs surge signal is not higher than the damage voltage of the equipment in the rear stage, thus, the surge absorption device provided by the utility model can make the residual voltage in circuit be lower, and solve the problem of high residual voltage in the prior art surge absorption device.

[0019] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical solutions in the embodiments of the present application clearer, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 is a circuit diagram of a surge protector in the related technical solution;

[0022] Figure 2 is a structural schematic diagram of a surge absorption device provided by the embodiments of the present application;

[0023] Figure 3 is a circuit diagram of a surge absorption device provided by the embodiments of the present application;

[0024] Figure 4 is a circuit diagram of a detection module provided by the embodiments of the present application;

[0025] Figure 5 is a circuit diagram of a sampling module provided by the embodiments of the present application;

[0026] Figure 6 is a circuit diagram of another sampling module provided by the embodiments of the present application. DETAILED DESCRIPTION

[0027] In order to make the technical solutions in the embodiments of the present application clearer, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] It should be noted that the terms "first", "second", and the like in the description and claims of the utility model and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] For the power consumption equipment connected to the power grid, especially the high-power power consumption equipment, the problem of inrush current and voltage impact will be faced, in order to avoid the damage of the equipment by the inrush, the professional surge protector is generally used. The commonly used surge absorption elements of the professional surge protector are ceramic gas discharge tube, pressure sensitive resistance and the like, the two commonly used surge absorption elements have high residual voltage, and generally the three-phase four-wire surge protector does not have protection for the firewire to the firewire, so that the residual voltage of the firewire to the firewire is high, for example, in the common 380V voltage three-phase four-wire system, the protection mode of the firewire and the zero line to the ground (L-PE, N-PE) is generally used. Figure 1 is the circuit diagram of the surge protector in the related technical scheme, as shown in Figure 1 The surge protector can be used in 230V or 400V system, including pressure sensitive resistance MOV1, pressure sensitive resistance MOV2, pressure sensitive resistance MOV3 and ceramic gas discharge tube Gas1, three-phase firewire is represented by L1, L2 and L3 respectively, zero line is represented by N, and ground line is represented by PE. For example, the voltage protection level is 1.6kV (L-N, N-PE), that is, when the surge protector encounters surge impact within the specification range, the residual surge voltage of the firewire to the zero line (L-N) and the zero line to the ground (N-PE) is 1.6kV after the surge protector absorbs the surge, the surge voltage of the firewire to the firewire (L-L) is absorbed by two pressure sensitive resistance elements in series, and the residual voltage is twice the residual voltage of the firewire to the zero line, that is, 3.2kV. For the circuit across L-L, it needs to withstand 3.2kV surge impact, and the circuit design requirement is very high.

[0030] To solve the above problems, the utility model embodiment provides a kind of surge absorption device, Figure 2 It is the structure schematic diagram of the surge absorption device provided by the utility model embodiment, as shown in Figure 2As shown, the surge absorption device includes a rectification module 110, an absorption module 120, a discharge module 130 and a control module 140; the rectification module 110 is connected to an alternating current signal, and is configured to convert the alternating current signal into a direct current signal; the absorption module 120 is connected to the rectification module 110, and is configured to store energy and generate a first voltage signal according to the direct current signal output by the rectification module 110; the discharge module 130 is connected to the absorption module 120 in parallel, and the control module 140 is connected to the absorption module 120; the absorption module 120 is further configured to absorb a surge signal and generate a second voltage signal, and the control module 140 is configured to detect the surge signal in the absorption module 120; and the discharge module 130 is configured to discharge the second voltage signal generated by the absorption module 120.

[0031] In this embodiment, the rectification module 110 is a module configured to convert an input alternating current signal into a direct current signal, and can provide a stable power supply. The absorption module 120 is a module configured to store energy and absorb a surge signal, for example, the absorption module 120 includes an energy storage element. The discharge module 130 is a module connected in parallel to both ends of the absorption module 120 and forms a loop with the absorption module 120, and can discharge the second voltage signal generated after the absorption module 120 absorbs a surge signal, so that the absorption module 120 can again absorb a surge signal at the next surge impact. The control module 140 is a module configured to process information, for example, to process the voltage signal generated by the absorption module 120.

[0032] In this embodiment, when the alternating current grid is working normally, the rectification module 110 rectifies the input alternating current and outputs direct current, and charges the absorption module 120 until a stable voltage (i.e., the first voltage signal) is formed across the absorption module 120, and the control module 140 detects the first voltage signal across the absorption module 120. When a surge occurs in the alternating current grid, the absorption module 120 generates a second voltage signal after absorbing the surge signal, the control module 140 detects the second voltage signal across the absorption module 120, and the discharge module 130 discharges the second voltage signal generated by the absorption module 120, so as to be ready for the absorption module 120 to again absorb a surge signal at the next surge impact. The first voltage signal is calculated according to the phase voltage effective value and the line voltage effective value of the alternating current, and the second voltage signal is the instantaneous voltage value across the absorption module 120 when the surge occurs, and the control module 140 detects the voltage change in the absorption module 120, which can provide a basis for circuit fault analysis.

[0033] The technical scheme of the embodiment provides a surge absorption device, which comprises a rectifier module, an absorption module, a discharge module and a control module; the rectifier module is connected with an alternating current signal, and is used for converting the alternating current signal into a direct current signal; the absorption module is connected with the rectifier module, and is used for storing energy and generating a first voltage signal according to the direct current signal output by the rectifier module; the discharge module is connected with the absorption module in parallel, and the control module is connected with the absorption module; the absorption module is further used for absorbing a surge signal and generating a second voltage signal, and the control module is used for detecting the surge signal in the module; and the discharge module is used for discharging the second voltage signal generated by the absorption module. According to the characteristics of a later-stage protected device, the absorption module is set so that the second voltage signal generated by the absorption module after absorbing the surge signal is not higher than the damage voltage of the later-stage device, and therefore, the surge absorption device can make the residual voltage in the circuit lower, and solve the problem of high residual voltage in the prior art.

[0034] Figure 3 is a circuit diagram of the surge absorption device provided by the embodiment of the utility model, as shown in Figure 3 The rectifier module 110 comprises a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5, a sixth diode D6, a seventh diode D7 and an eighth diode D8, the first end of the first diode D1 and the second end of the eighth diode D8 are connected with the input end a of the rectifier module 110, the first end of the second diode D2 and the second end of the seventh diode D7 are connected with the input end a of the rectifier module 110, the first end of the third diode D3 and the second end of the sixth diode D6 are connected with the input end a of the rectifier module 110, the first end of the fourth diode D4 and the second end of the fifth diode D5 are connected with the input end a of the rectifier module 110, the second end of the first diode D1, the second end of the second diode D2, the second end of the third diode D3 and the second end of the fourth diode D4 are connected with the first output end b of the rectifier module 110, and the first end of the fifth diode D5, the first end of the sixth diode D6, the first end of the seventh diode D7 and the first end of the eighth diode D8 are connected with the second output end c of the rectifier module 110.

[0035] In the embodiment, the alternating current signal is a three-phase alternating current, the three-phase live wires are represented by A, B and C respectively, and the neutral wire is represented by N. The first diode D1, the second diode D2, the third diode D3, the fourth diode D4, the fifth diode D5, the sixth diode D6, the seventh diode D7 and the eighth diode D8 constitute a full-wave rectifier circuit, the full-wave rectifier circuit rectifies the input three-phase alternating current and outputs a stable direct current, and the full-wave rectifier circuit can utilize all the electric energy of the alternating current, so that the rectification efficiency can be improved.

[0036] Reference is continued to be made to Figure 3The absorption module 120 includes a first capacitor C1, a first end of the first capacitor C1 is connected to the first output end b of the rectifier module 110, and a second end of the first capacitor C1 is connected to the second output end c of the rectifier module 110.

[0037] On the basis of the above embodiment, when the power grid is normal, the rectifier module 110 charges the first capacitor C1 by converting alternating current into direct current, a first voltage signal is generated across the first capacitor C1, when a surge occurs, the first capacitor C1 absorbs the surge voltage, and clamps the first capacitor C1 to a second voltage signal. For example, in a 230V or 400V voltage system, after a surge impact, the residual voltage of the live wire to the zero line and the live wire to the live wire can be reduced to about 1.2kV or so. Among them, the selection of the first capacitor C1 can be determined according to the surge current value Isurge, the surge current time Tsurge and the maximum allowed capacitor surge voltage ΔU, C1 = Isurge*Tsurge / ΔU, Isurge and Tsurge can be obtained through the test standard to be passed, for example, a surge voltage of 6kV, a test impedance of 2Ω, Isurge is 3kA, and Tsurge is generally about 28us.

[0038] Continuing to refer to Figure 3 The discharge module 130 includes a first resistor R1, a first end of the first resistor R1 is connected to a first end of the first capacitor C1, and a second end of the first resistor R1 is connected to a second end of the first capacitor C1. Referring to the above embodiment, when a surge occurs, the first capacitor C1 absorbs the surge voltage, and clamps the first capacitor C1 to a second voltage signal, the first resistor R1 and the first capacitor C1 form a loop, and the second voltage signal is discharged through the first resistor R1, so that the first capacitor C1 can absorb the surge voltage again when the next surge impact. Among them, the selection of the first resistor R1 can be determined according to the allowed shortest interval time of surge impact, the surge test time interval is generally 1 minute, R1 = τ / C1, τ is the time constant (less than 1 minute).

[0039] Continuing to refer to Figure 3 The surge absorption device further includes a circuit breaking protection module 310, a first end of the circuit breaking protection module 310 is connected to an alternating current signal, and a second end of the circuit breaking protection module is connected to the rectifier module 110. The circuit breaking protection module 310 is used to cut off the circuit when the circuit fails. Among them, the circuit breaking protection module 310 is a module that cuts off the circuit when the circuit fails, which avoids damaging the circuit elements or equipment due to circuit failure.

[0040] Specifically, the circuit breaker protection module 310 includes a first fuse F1, a second fuse F2, a third fuse F3 and a fourth fuse F4, a first end of the first fuse F1 is connected to a first end of the circuit breaker protection module 310, a second end of the first fuse F1 is connected to a second end of the circuit breaker protection module 310, a first end of the second fuse F2 is connected to the first end of the circuit breaker protection module 310, a second end of the second fuse F2 is connected to the second end of the circuit breaker protection module 310, a first end of the third fuse F3 is connected to the first end of the circuit breaker protection module 310, a second end of the third fuse F3 is connected to the second end of the circuit breaker protection module 310, a first end of the fourth fuse F4 is connected to the first end of the circuit breaker protection module 310, and a second end of the fourth fuse F4 is connected to the second end of the circuit breaker protection module 310.

[0041] In the embodiment, the first fuse F1 is connected in series on the A-phase live wire, the second fuse F2 is connected in series on the B-phase live wire, the third fuse F3 is connected in series on the C-phase live wire, and the fourth fuse F4 is connected in series on the zero line N. When the rectifier module 110, the absorption module 120 or the discharge module 130 is damaged, the first fuse F1, the second fuse F2, the third fuse F3 and the fourth fuse F4 are burned out, thereby protecting the circuit and preventing system failure.

[0042] On the basis of the above embodiment, the surge absorption device further includes a detection module, Figure 4 is a circuit diagram of the detection module provided in the embodiment of the utility model, as Figure 4 shown, the detection module 410 is connected to the circuit breaker protection module 310 and the control module 140, the detection module 410 is used for detecting the state of the circuit breaker protection module 310 and outputting a first detection signal, and the control module 140 is further used for judging the state of the circuit breaker protection module 310 according to the first detection signal.

[0043] In the embodiment, the detection module 410 is a module for detecting the state of the circuit breaker protection module 310. For example, when the circuit breaker protection module 310 is disconnected due to circuit failure, the detection module 410 is turned on and outputs a first detection signal, wherein the first detection signal can be a low-level signal, and the control module 140 judges that the circuit breaker protection module 310 is disconnected according to the received low-level signal.

[0044] Specifically, the detection module 410 includes a second capacitor C2, a second resistor R2, a first optocoupler U1 and a second optocoupler U2, the first end of the second capacitor C2 is connected to the first end of the circuit protection module 310, the second end of the second capacitor C2 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the first end of the first optocoupler U1 and the second end of the second optocoupler U2, the second end of the first optocoupler U1 and the first end of the second optocoupler U2 are connected to the second end of the circuit protection module 310, the third end of the first optocoupler U1 and the third end of the second optocoupler U2 are connected to the output end of the detection module 410, and the fourth end of the first optocoupler U1 and the fourth end of the second optocoupler U2 are grounded.

[0045] For example, the detection module 410 detects the first fuse F1, the first fuse F1 is connected in the circuit of the detection module 410, when the first fuse F1 is normal, the voltage difference between the two ends of the first fuse F1 is very small, the current flowing through the first optocoupler U1 and the second optocoupler U2 is very small, the first optocoupler U1 and the second optocoupler U2 cannot be turned on, the first detection signal output by the detection module 410 is a high-level signal, and the control module 140 judges that the first fuse F1 is normal according to the received high-level signal. When the first fuse F1 is fused, there is a large voltage difference between the two ends of the first fuse F1, the current flowing through the first optocoupler U1 and the second optocoupler U2 is large, the first optocoupler U1 and the second optocoupler U2 are turned on, the first detection signal output by the detection module 410 is a low-level signal, and the control module 140 judges that the first fuse F1 is disconnected according to the received low-level signal, for example, the control module 140 sends an alarm prompt, which can remind the user to replace in time.

[0046] On the basis of the above-mentioned embodiment, the surge absorption device further includes a sampling module, since the harm of surge impact is relatively large, the equipment is easy to be damaged, and many accident scenes are related to surge, through surge detection, the basis of the accident scene can be provided. Figure 5 As shown in the circuit diagram of the sampling module provided in the embodiment of the utility model, Figure 5 The sampling module 510 is connected with the absorption module 120 and the control module 140, the sampling module 510 is used for sampling the voltage of the absorption module 120 and outputting a first sampling signal, and the control module 140 is further used for detecting the surge electric signal in the absorption module 120 according to the first sampling signal. The sampling module 510 is a module for sampling the voltage of the absorption module 120, for example, the sampling module 510 is an analog-to-digital converter, the analog-to-digital converter converts the voltage of the absorption module 120 into a digital signal, facilitating information processing of the control module 140.

[0047] For example, Figure 6It is another circuit diagram of the sampling module provided by the embodiment of the utility model, as shown in the figure, Figure 6 As shown in the figure, the sampling module 510 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first operational amplifier U3 and a first comparator U4, the first end of the third resistor R3 is connected with the first end of the first capacitor C1, the second end of the third resistor R3 is connected with the first end of the fourth resistor R4 and the first end of the first operational amplifier U3, the second end of the fourth resistor R4 is connected with the output end of the first operational amplifier U3 and the first end of the seventh resistor R7, the second end of the seventh resistor R7 is connected with the first end of the first comparator U3, the second end of the first comparator U3 is connected with a reference voltage Vref, the output end of the first comparator U3 is connected with the control module 140, the first end of the fifth resistor R5 is connected with the second end of the first capacitor C1, the second end of the fifth resistor R5 is connected with the first end of the sixth resistor R6 and the second end of the first operational amplifier U3, and the second end of the sixth resistor R6 is grounded.

[0048] In the embodiment, the first operational amplifier U3, the third resistor R3, the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6 constitute a sampling circuit, the voltage of the first capacitor C1 is collected and converted into a third voltage signal, the first comparator U4 compares the third voltage signal with the reference voltage Vref to generate a digital signal, and the control module 140 judges whether a surge occurs according to the digital signal, for example, the digital signal is logic "1" indicating that a surge impact occurs, and the digital signal is logic "0" indicating that no surge impact occurs. By setting the comparator to compare the sampling voltage with the reference voltage and outputting the digital signal, the anti-interference performance of the sampling module circuit is relatively strong.

[0049] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the utility model can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the utility model can be achieved, which are not limited herein.

[0050] The above specific embodiments do not constitute a limitation on the protection scope of the utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A surge absorbing device, characterized by comprising: The rectifier module, the absorption module, the discharge module and the control module are included. The rectifier module is connected to an alternating current signal, and is configured to convert the alternating current signal into a direct current signal. The absorption module is connected to the rectifier module, and is configured to store energy and generate a first voltage signal according to the direct current signal output by the rectifier module. The discharge module is connected in parallel to the absorption module, and the control module is connected to the absorption module. The absorption module is further configured to absorb a surge signal and generate a second voltage signal, and the control module is configured to detect the surge signal in the absorption module. The discharge module is configured to discharge the second voltage signal generated by the absorption module.

2. The surge absorption device of claim 1, wherein, The rectifier module includes a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a seventh diode and an eighth diode. The first end of the first diode and the second end of the eighth diode are connected to the input end of the rectifier module. The first end of the second diode and the second end of the seventh diode are connected to the input end of the rectifier module. The first end of the third diode and the second end of the sixth diode are connected to the input end of the rectifier module. The first end of the fourth diode and the second end of the fifth diode are connected to the input end of the rectifier module. The second end of the first diode, the second end of the second diode, the second end of the third diode and the second end of the fourth diode are connected to the first output end of the rectifier module. The first end of the fifth diode, the first end of the sixth diode, the first end of the seventh diode and the first end of the eighth diode are connected to the second output end of the rectifier module.

3. The surge absorption device of claim 2, wherein, The absorption module includes a first capacitor, and the first end of the first capacitor is connected to the first output end of the rectifier module, and the second end of the first capacitor is connected to the second output end of the rectifier module.

4. The surge absorption device of claim 3, wherein, The discharge module includes a first resistor, and the first end of the first resistor is connected to the first end of the first capacitor, and the second end of the first resistor is connected to the second end of the first capacitor.

5. The surge absorption device of claim 1, wherein, The circuit protection module is further included, the first end of the circuit protection module is connected to the alternating current signal, and the second end of the circuit protection module is connected to the rectifier module. The circuit protection module is configured to cut off the circuit when a circuit fault occurs.

6. The surge absorption device of claim 5, wherein, The circuit protection module includes a first fuse, a second fuse, a third fuse and a fourth fuse. The first end of the first fuse is connected to the first end of the circuit protection module, and the second end of the first fuse is connected to the second end of the circuit protection module. The first end of the second fuse is connected to the first end of the circuit protection module, and the second end of the second fuse is connected to the second end of the circuit protection module. The first end of the third fuse is connected to the first end of the circuit protection module, and the second end of the third fuse is connected to the second end of the circuit protection module. The first end of the fourth fuse is connected to the first end of the circuit protection module, and the second end of the fourth fuse is connected to the second end of the circuit protection module.

7. The surge absorption device of claim 5, wherein, The detection module is connected with the circuit breaking protection module and the control module, and is configured to detect a state of the circuit breaking protection module and output a first detection signal.

8. The surge absorption device of claim 7, wherein, The detection module comprises a second capacitor, a second resistor, a first optoelectronic coupler and a second optoelectronic coupler, a first end of the second capacitor is connected with a first end of the circuit breaking protection module, a second end of the second capacitor is connected with a first end of the second resistor, a second end of the second resistor is connected with a first end of the first optoelectronic coupler and a second end of the second optoelectronic coupler, a second end of the first optoelectronic coupler and a first end of the second optoelectronic coupler are connected with a second end of the circuit breaking protection module, a third end of the first optoelectronic coupler and a third end of the second optoelectronic coupler are connected with an output end of the detection module, and a fourth end of the first optoelectronic coupler and a fourth end of the second optoelectronic coupler are grounded.

9. The surge absorption device of claim 1, wherein, The sampling module is connected with the absorbing module and the control module, and is configured to sample a voltage of the absorbing module and output a first sampling signal, and the control module is further configured to detect the surge signal in the absorbing module according to the first sampling signal.

10. The surge absorption device of claim 9, wherein, The sampling module comprises an analog-to-digital converter.

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