Circuit protection device and electric equipment

Abstract

The utility model provides a circuit protection device and electric equipment, and relates to the technical field of circuit protection. The circuit protection device comprises a passive magnetic drive module, a mechanical transmission structure, an excitation module and a cut-off module. The excitation module and the cut-off module are both arranged in a closed shell. The excitation module comprises a detonating element; and the passive magnetic drive module is used for converting a fault electric signal into a magnetic signal when detecting that the main loop generates the fault electric signal, and driving the mechanical transmission structure to impact a detonating element in the excitation module through the magnetic signal, so that the excitation module explodes, and the cutting module is driven to cut off the main loop. According to the scheme, through a triggering mode of combining the passive magnetic drive module and the mechanical transmission structure, the excitation module can be rapidly triggered to explode, protection of a main loop is achieved, and the problem that the excitation module cannot be efficiently triggered to explode in a triggering mode adopted in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of circuit protection technology, and more specifically, to a circuit protection device and electrical equipment. Background Technology

[0002] A momentary circuit breaker (MCB) disconnects a circuit by detonating explosives to generate a high-voltage surge. Typically, an MCB consists of several modules: an excitation module and a disconnection module. The excitation module, upon receiving an excitation signal, detonates to generate a high-voltage surge. The disconnection module, using the thrust generated by the high-voltage surge, drives a piston or switch to disconnect the main circuit's conductive components, thus breaking the circuit.

[0003] In related technologies, most self-excited circuit protection devices have two main explosion triggering methods: one is to use a front-end series signal fuse, which generates an arc signal to trigger the explosion after it blows; the other is to add a breaking contact, which uses the repulsive force generated by the fault current to push the moving contact apart, generating an arc signal between the moving contact and the stationary contact to trigger the explosion.

[0004] However, in the above-mentioned triggering methods, the signal fuse operates slowly and requires a large amount of heat to melt, and the breaking contact cannot be rejected under low fault current. Utility Model Content

[0005] The purpose of this application is to provide a circuit protection device and electrical equipment to address the shortcomings of the prior art and solve the technical problems in the prior art.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0007] In a first aspect, embodiments of this application provide a circuit protection device, which includes: a passive magnetic drive module, a mechanical transmission structure, an excitation module, and a cut-off module, wherein the excitation module and the cut-off module are both disposed within a sealed housing; the excitation module includes an initiating element;

[0008] The first end of the passive magnetic drive module is connected to the input end of the main circuit in the circuit to be protected, the second end of the passive magnetic drive module is connected to the output end of the main circuit, and the third end of the passive magnetic drive module is connected to one end of the mechanical transmission structure.

[0009] The passive magnetic drive module is used to convert the fault electrical signal into a magnetic signal when the main circuit is detected to generate a fault electrical signal, and drive the mechanical transmission structure to impact the detonation element in the excitation module through the magnetic signal, so as to cause the excitation module to explode and drive the cut-off module to disconnect the main circuit.

[0010] Optionally, the mechanical transmission structure includes: an unlocking module, an energy storage elastic element, and an impact actuator; one end of the unlocking module is connected to the third end of the passive magnetic drive module, the other end of the unlocking module is connected to the first end of the energy storage elastic element, and one end of the impact actuator is connected to the first end of the energy storage elastic element; the other end of the impact actuator is disposed opposite to the detonation element of the excitation module.

[0011] The unlocking module is used to unlock under the action of the magnetic signal and drive the energy storage elastic element to release and generate elastic potential energy.

[0012] The energy storage elastic element is used to drive the impact actuator to strike the detonating element in the excitation module under the action of the elastic potential energy, and to ignite the pyrotechnics in the excitation module by the mechanical energy generated during the impact, so that the excitation module explodes.

[0013] Optionally, the excitation module includes: a first excitation source and a second excitation source;

[0014] The first excitation source is disposed in the first excitation chamber within the sealed housing, and the second excitation source is disposed in the second excitation chamber within the sealed housing; the detonating element is disposed at the top within the first excitation chamber;

[0015] An ignitable explosive is placed between the outer shell of the first excitation chamber and the detonation element;

[0016] A first ignition hole is provided at the connection between the first excitation chamber and the second excitation chamber;

[0017] The first excitation source is used to ignite the explosive in the first excitation chamber under the mechanical energy generated when the impact actuator strikes the detonating element, and to generate a trigger signal after the explosive in the first excitation chamber is ignited, and to transmit the trigger signal to the second excitation chamber through the first ignition hole.

[0018] The second excitation source is used to ignite the explosive in the second excitation chamber under the action of the trigger signal, and generate a high-pressure impact thrust, and drive the cut-off module to disconnect the main circuit through the high-pressure impact thrust.

[0019] Optionally, the explosive in the first excitation chamber and the explosive in the second excitation chamber are made of different materials.

[0020] Optionally, the energy storage elastic element includes: an energy storage spring sheet.

[0021] Optionally, a safety baffle is provided between the impact actuator and the detonating element, and the impact actuator includes an impact rod.

[0022] Optionally, the detonating element includes a percussion cap.

[0023] Optionally, the second excitation cavity is also provided with an external excitation source interface;

[0024] The external excitation source interface is used to receive external excitation signals;

[0025] The second excitation is also used to ignite the explosive in the second excitation chamber under the action of the external excitation signal to generate a high-pressure impact thrust, and drive the cut-off module to disconnect the main circuit under the action of the high-pressure impact thrust.

[0026] Optionally, the circuit protection device further includes: a fast-acting fuse; the fast-acting fuse is connected in parallel to the main circuit;

[0027] The fast-acting fuse is used for arc-free disconnection.

[0028] Secondly, embodiments of this application also provide an electrical device, including the circuit protection device described in the first aspect.

[0029] The beneficial effects of this application are:

[0030] This application provides a circuit protection device and an electrical appliance. The circuit protection device includes: a passive magnetic drive module, a mechanical transmission structure, an excitation module, and a cut-off module. Both the excitation module and the cut-off module are housed within a sealed housing. The excitation module includes an initiating element. A first end of the passive magnetic drive module is connected to the input end of the main circuit in the circuit to be protected, a second end of the passive magnetic drive module is connected to the output end of the main circuit, and a third end of the passive magnetic drive module is connected to one end of the mechanical transmission structure. The passive magnetic drive module is used to convert a fault electrical signal into a magnetic signal when a fault electrical signal is detected in the main circuit. This magnetic signal drives the mechanical transmission structure to impact the initiating element in the excitation module, causing the excitation module to explode and thus driving the cut-off module to disconnect the main circuit. In this solution, a passive magnetic drive module is used to detect in real time whether a fault electrical signal is generated in the main circuit. If so, the fault electrical signal is converted into a magnetic signal, and the magnetic signal drives the mechanical transmission structure to impact the detonating element in the excitation module, thereby triggering the excitation module to explode. The high-pressure impact generated by the explosion drives the cut-off module to disconnect the copper busbar in the main circuit, thus cutting off the fault current in the main circuit. This achieves fault protection for the main circuit and improves the safety of the electrical equipment. At the same time, the triggering method provided in this application, which combines a passive magnetic drive module with a mechanical transmission structure, allows the excitation module to be triggered to explode quickly, achieving protection for the main circuit and solving the problem that the triggering method used in the prior art cannot efficiently trigger the excitation module to explode. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a circuit protection device provided in an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of another circuit protection device provided in an embodiment of this application;

[0034] Figure 3 A schematic diagram of the structure of another circuit protection device provided in the embodiments of this application;

[0035] Figure 4 This is a schematic diagram of another circuit protection device provided in an embodiment of this application;

[0036] Figure 5 A schematic diagram of the structure of another circuit protection device provided in the embodiments of this application;

[0037] Figure 6 This is a schematic diagram of the structure of an electrical device provided in an embodiment of this application.

[0038] Icons: 100-Circuit protection device; 1-Passive magnetic drive module; 2-Mechanical transmission structure; 3-Excitation module; 4-Cut-off module; 5-Initiating element; 6-Arc extinguishing module; 21-Unlocking module; 22-Energy storage elastic element; 23-Impact actuator; 31-First excitation source; 32-Second excitation source; 7-External excitation source interface; 8-Fast-acting fuse; 200-Electrical equipment. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0040] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that the term "comprising" will be used in the embodiments of this application to indicate the presence of the features declared thereafter, but does not exclude the addition of other features.

[0042] Figure 1 This is a schematic diagram of the structure of a circuit protection device 100 provided in an embodiment of this application; as shown... Figure 1 As shown, the circuit protection device 100 includes: a passive magnetic drive module 1, a mechanical transmission structure 2, an excitation module 3, and a cut-off module 4. The drive is achieved through the magnetic field generated by the magnetic material in the passive magnetic drive module, meaning that self-excitation of the excitation module 3 can be achieved without an external power supply or drive circuit.

[0043] Optionally, the number of turns of the magnetic drive coil in the passive magnetic drive module is n, and the magnetic adjustable range is 1-2In.

[0044] Both the excitation module 3 and the cutoff module 4 are housed within a sealed casing. The excitation module 3 includes an initiating element 5. The shape and size of the sealed casing are not specifically limited here. For example, the initiating element 5 can be a mechanical percussion cap, detonator, etc., used to ignite the explosive in the excitation module 3.

[0045] The first end of the passive magnetic drive module 1 is connected to the input end of the main circuit in the circuit to be protected, the second end of the passive magnetic drive module 1 is connected to the output end of the main circuit, and the third end of the passive magnetic drive module 1 is connected to one end of the mechanical transmission structure 2. For example, the main circuit can be a main branch of the electrical equipment 200 (such as an air conditioner), which is equipped with multiple power devices. The passive magnetic drive module 1 can be connected in series to the input end of the main branch, and the third end of the passive magnetic drive module 1 is connected to one end of the mechanical transmission structure 2, that is, the mechanical transmission structure 2 can receive the self-excitation trigger signal input by the passive magnetic drive module 1.

[0046] The passive magnetic drive module 1 is used to convert the fault electrical signal into a magnetic signal when a fault electrical signal is detected in the main circuit, and drive the mechanical transmission structure 2 to impact the detonating element 5 in the excitation module 3 through the magnetic signal, so that the excitation module 3 explodes and drives the cut-off module 4 to disconnect the main circuit.

[0047] In this embodiment, during the operation of the electrical equipment, the passive magnetic drive module 1 detects in real time whether a fault current is generated in the main circuit of the electrical equipment. If so, the passive magnetic drive module 1 converts the fault current into a magnetic signal and drives the mechanical transmission structure 2 to impact the detonating element 5 in the excitation module 3 through the magnetic signal. After the impact, the pyrotechnic device in the excitation module 3 is ignited, causing the excitation module 3 to explode. The thrust of the high-pressure impact generated by the explosion drives the cut-off module 4 to disconnect the main circuit, that is, to cut off the fault current, avoiding the possibility of the power devices in the main circuit being burned out. This achieves fault protection for the main circuit and improves the safety of the electrical equipment 200. At the same time, the triggering method provided in this application, which combines the passive magnetic drive module 1 with the mechanical transmission structure 2, allows the excitation module 3 to be quickly triggered to explode, thus achieving protection for the main circuit.

[0048] Optionally, continue to refer to Figure 1 As shown, considering that the disconnecting module 4 will generate a huge arc signal instantaneously when disconnecting the fault current, the circuit protection device 100 is proposed to further include an arc extinguishing module 6. The arc extinguishing module 6 can be an arc extinguishing grid or an arc extinguishing fuse. That is, the energy of the arc signal can be transferred and absorbed through the arc extinguishing module 6 to achieve protection of the main circuit.

[0049] In summary, this application provides a circuit protection device comprising: a passive magnetic drive module, a mechanical transmission structure, an excitation module, and a cut-off module. Both the excitation module and the cut-off module are housed within a sealed housing. The excitation module includes an initiating element. A first end of the passive magnetic drive module is connected to the input end of the main circuit in the circuit to be protected, a second end of the passive magnetic drive module is connected to the output end of the main circuit, and a third end of the passive magnetic drive module is connected to one end of the mechanical transmission structure. The passive magnetic drive module, upon detecting a fault electrical signal in the main circuit, converts the fault electrical signal into a magnetic signal and drives the mechanical transmission structure to impact the initiating element in the excitation module, causing the excitation module to explode and thus driving the cut-off module to disconnect the main circuit. In this solution, a passive magnetic drive module is used to detect in real time whether a fault electrical signal is generated in the main circuit. If so, the fault electrical signal is converted into a magnetic signal, and the magnetic signal drives the mechanical transmission structure to impact the detonating element in the excitation module, thereby triggering the excitation module to explode. The high-pressure impact generated by the explosion drives the cut-off module to disconnect the copper busbar in the main circuit, thus cutting off the fault current in the main circuit. This achieves fault protection for the main circuit and improves the safety of the electrical equipment. At the same time, the triggering method provided in this application, which combines a passive magnetic drive module with a mechanical transmission structure, allows the excitation module to be triggered to explode quickly, achieving protection for the main circuit and solving the problem that the triggering method used in the prior art cannot efficiently trigger the excitation module to explode.

[0050] Optionally, refer to Figure 2 As shown, the mechanical transmission structure 2 includes: an unlocking module 21, an energy storage elastic element 22, and an impact actuator 23. Exemplarily, the unlocking module 21 can be a latching component, the energy storage elastic element 22 can be a spring, and the impact actuator 23 can be a trigger rod, or other forms, which are not specifically limited here.

[0051] One end of the unlocking module 21 is connected to the third end of the passive magnetic drive module 1, and the other end of the unlocking module 21 is connected to the first end of the energy storage elastic element 22. One end of the impact actuator 23 is connected to the first end of the energy storage elastic element 22; the other end of the impact actuator 23 is positioned opposite to the detonation element 5 of the excitation module 3.

[0052] The unlocking module 21 is used to unlock under the action of a magnetic signal and drive the energy storage elastic element 22 to release and generate elastic potential energy;

[0053] The energy storage elastic element 22 is used to drive the impact actuator 23 to impact the detonating element 5 in the excitation module 3 under the action of elastic potential energy, and to ignite the pyrotechnics in the excitation module 3 through the mechanical energy generated during the impact, so that the excitation module 3 explodes.

[0054] In this embodiment, during the operation of the electrical equipment 200, the passive magnetic drive module 1 detects in real time whether the operating current I1 of the main circuit in the electrical equipment 200 is greater than the preset current threshold. If so, the operating current I1 is determined to be a fault current. At the same time, the passive magnetic drive module 1 converts the fault current into a magnetic signal and drives the unlocking module to unlock through the magnetic signal, such as driving the buckle in the unlocking module to disengage from the buckle. After the unlocking module unlocks, it drives the energy storage elastic element 22 to release and generate elastic potential energy. The generated elastic potential energy drives the impact actuator 23 to impact the detonating element 5 in the excitation module 3. The mechanical energy generated during the impact ignites the pyrotechnics in the excitation module 3, causing the excitation module 3 to explode. That is, the excitation module 3 receives the mechanical energy generated by the combined action of the passive magnetic drive module 1, the unlocking module, the energy storage elastic element 22, and the impact actuator 23, and ignites the pyrotechnics in the excitation module 3 through the mechanical energy. The excitation module 3 can be triggered without an external trigger signal, and the entire mechanical transmission structure 2 is stable and reliable.

[0055] Optionally, refer to Figure 3 As shown, the excitation module 3 includes: a first excitation source 31 and a second excitation source 32;

[0056] The first excitation source 31 is disposed in the first excitation chamber within the sealed housing, and the second excitation source 32 is disposed in the second excitation chamber within the sealed housing; the detonating element 5 is disposed at the top of the first excitation chamber; wherein, the first excitation chamber may also be referred to as the primer chamber, and the second excitation chamber may also be referred to as the explosion chamber.

[0057] An ignitable explosive is placed between the outer shell of the first excitation chamber and the detonating element 5. The explosive in the first excitation chamber can be ignited by the mechanical energy generated when the impact actuator 23 strikes the detonating element 5, so that the first excitation source 31 explodes.

[0058] A first ignition hole is provided at the connection between the first excitation chamber and the second excitation chamber. The size and dimensions of the first ignition hole can be set according to actual needs and are not specifically limited here.

[0059] The first excitation source 31 is used to ignite the explosive in the first excitation chamber under the action of the mechanical energy generated when the impact actuator 23 hits the detonating element 5, and to generate a trigger signal after the explosive in the first excitation chamber is ignited, and to transmit the trigger signal to the second excitation chamber through the first ignition hole.

[0060] The second excitation source 32 is used to ignite the explosive in the second excitation chamber under the action of the trigger signal, and generate a high-pressure impact thrust, and drive the cut-off module 4 to disconnect the main circuit through the high-pressure impact thrust.

[0061] In this embodiment, since an explosive is disposed between the outer shell of the first excitation chamber and the detonating element 5, the mechanical energy generated when the impact actuator 23 strikes the detonating element 5 can ignite the explosive in the first excitation chamber, causing the first excitation source 31 to explode. When the first excitation source 31 explodes, a trigger signal is generated, which is then transmitted to the second excitation chamber through the first ignition hole. Under the action of the trigger signal, the second excitation source 32 ignites the explosive in the second excitation chamber, causing the second excitation source 32 to explode. When the second excitation source 32 explodes, a high-pressure impact thrust is generated, which drives the cut-off module 4 to disconnect the main circuit, thereby protecting the main circuit.

[0062] Optionally, the explosive in the first excitation chamber and the explosive in the second excitation chamber are made of different materials.

[0063] In one feasible manner, the explosive in the first excitation chamber is made of combustible material A, and the explosive in the second excitation chamber is made of combustible material B.

[0064] Optionally, the energy storage elastic element 22 includes an energy storage spring sheet. The energy storage elastic element 22 can also be a spring.

[0065] Optionally, a safety stop is provided between the impact actuator 23 and the detonating element 5. The impact actuator 23 includes an impact rod.

[0066] In this embodiment, a safety baffle is proposed to be provided between the impact actuator 23 and the detonating element 5. That is, before the safety baffle is removed, the impact rod cannot contact the detonating element 5. The safety baffle needs to be removed after the product is installed.

[0067] Optionally, the detonating element 5 includes a percussion cap.

[0068] Optionally, refer to Figure 4 As shown, the second excitation cavity is also provided with an external excitation source interface 7; the external excitation source interface 7 includes: a positive input interface IN+ and a negative input interface IN-.

[0069] External excitation source interface 7 is used to connect external excitation signals;

[0070] The second excitation is also used to ignite the explosive in the second excitation chamber under the action of an external excitation signal to generate a high-pressure impact thrust, and drive the cut-off module 4 to disconnect the main circuit under the action of the high-pressure impact thrust.

[0071] In this embodiment, in order to improve the applicability of the circuit protection device 100, it is proposed that an external excitation source interface 7 can be extended on the outer wall of the second cavity. That is, the second excitation source 32 can also receive external excitation signals and, under the action of the external excitation signals, ignite the explosive in the second excitation cavity. After the explosive is ignited, a high-pressure impact thrust is generated, and the high-pressure impact thrust drives the cut-off module 4 to disconnect the main circuit copper busbar, thereby protecting the main circuit and achieving the effect of dual protection for the main circuit.

[0072] Optionally, refer to Figure 5 As shown, the circuit protection device 100 also includes: a fast-acting fuse 8; the fast-acting fuse 8 is connected in parallel to the main circuit;

[0073] Fast-acting fuse 8 is used for arc-free disconnection.

[0074] In one feasible approach, a fast-acting fuse 8 can be connected in parallel with the main circuit. The fast-acting fuse 8 can be used to interrupt the arc-free signal, thereby improving system safety.

[0075] Optionally, refer to Figure 6 As shown, this application also provides an electrical device 200, including the circuit protection device 100 provided in the above embodiments.

[0076] For example, the electrical equipment 200 can be electrical equipment in different fields, such as transformers and generators in power systems, industrial motors, frequency converters and PLCs in the industrial field, and air conditioners, refrigerators and smart home appliances in the home appliance field.

[0077] In some embodiments, the circuit protection device 100 can be integrated into a main branch of the electrical equipment 200. During the operation of the electrical equipment 200, the circuit protection device 100 can detect the working current flowing through the main branch in real time, and when the working current at a certain moment exceeds the preset current threshold, the circuit is cut off, that is, the fault current is automatically cut off, so as to protect the electrical equipment from faults and ensure the safety of the electrical equipment and the stability of the power system.

[0078] Optionally, the present invention also provides a program product, such as a computer-readable storage medium, including a program that, when executed by a processor, is used to perform the above-described method embodiments.

[0079] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0080] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0081] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0082] The integrated units implemented as software functional units described above can be stored in a computer-readable storage medium. These software functional units, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A circuit protection device, characterized in that, The circuit protection device includes: a passive magnetic drive module, a mechanical transmission structure, an excitation module, and a cut-off module, wherein the excitation module and the cut-off module are both housed within a sealed housing; the excitation module includes an initiating element. The first end of the passive magnetic drive module is connected to the input end of the main circuit in the circuit to be protected, the second end of the passive magnetic drive module is connected to the output end of the main circuit, and the third end of the passive magnetic drive module is connected to one end of the mechanical transmission structure. The passive magnetic drive module is used to convert the fault electrical signal into a magnetic signal when the main circuit is detected to generate a fault electrical signal, and drive the mechanical transmission structure to impact the detonation element in the excitation module through the magnetic signal, so as to cause the excitation module to explode and drive the cut-off module to disconnect the main circuit.

2. The circuit protection device according to claim 1, characterized in that, The mechanical transmission structure includes: an unlocking module, an energy storage elastic element, and an impact actuator; one end of the unlocking module is connected to the third end of the passive magnetic drive module, the other end of the unlocking module is connected to the first end of the energy storage elastic element, and one end of the impact actuator is connected to the first end of the energy storage elastic element; the other end of the impact actuator is disposed opposite to the detonation element of the excitation module. The unlocking module is used to unlock under the action of the magnetic signal and drive the energy storage elastic element to release and generate elastic potential energy. The energy storage elastic element is used to drive the impact actuator to strike the detonating element in the excitation module under the action of the elastic potential energy, and to ignite the pyrotechnics in the excitation module by the mechanical energy generated during the impact, so that the excitation module explodes.

3. The circuit protection device according to claim 2, characterized in that, The incentive module includes: a first incentive source and a second incentive source; The first excitation source is disposed in the first excitation chamber within the sealed housing, and the second excitation source is disposed in the second excitation chamber within the sealed housing; the detonating element is disposed at the top within the first excitation chamber; An ignitable explosive is placed between the outer shell of the first excitation chamber and the detonation element; A first ignition hole is provided at the connection between the first excitation chamber and the second excitation chamber; The first excitation source is used to ignite the explosive in the first excitation chamber under the mechanical energy generated when the impact actuator strikes the detonating element, and to generate a trigger signal after the explosive in the first excitation chamber is ignited, and to transmit the trigger signal to the second excitation chamber through the first ignition hole. The second excitation source is used to ignite the explosive in the second excitation chamber under the action of the trigger signal, and generate a high-pressure impact thrust, and drive the cut-off module to disconnect the main circuit through the high-pressure impact thrust.

4. The circuit protection device according to claim 3, characterized in that, The explosives in the first excitation chamber and the explosives in the second excitation chamber are made of different materials.

5. The circuit protection device according to claim 2, characterized in that, The energy storage elastic element includes: an energy storage spring sheet.

6. The circuit protection device according to claim 2, characterized in that, A safety baffle is provided between the impact actuator and the detonating element, and the impact actuator includes an impact rod.

7. The circuit protection device according to claim 1, characterized in that, The detonating element includes: a percussion cap.

8. The circuit protection device according to claim 3, characterized in that, The second excitation chamber is also equipped with an external excitation source interface; The external excitation source interface is used to receive external excitation signals; The second excitation source is also used to ignite the explosive in the second excitation chamber under the action of the external excitation signal to generate a high-pressure impact thrust, and drive the cut-off module to disconnect the main circuit under the action of the high-pressure impact thrust.

9. The circuit protection device according to any one of claims 1-8, characterized in that, The circuit protection device further includes: a fast-acting fuse; the fast-acting fuse is connected in parallel to the main circuit; The fast-acting fuse is used for arc-free disconnection.

10. An electrical appliance, characterized in that, Includes the circuit protection device described in any one of claims 1-9.

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