Integrated hall element actuated fuse

Abstract

The application discloses an integrated Hall element excitation fuse, which comprises an excitation fuse shell, at least one conductive row and an excitation source; the excitation fuse shell is integrated with a Hall element installation module and a control module; at least one Hall element is arranged in the Hall element installation module; a magnetic induction element is arranged correspondingly to the Hall element to form a magnetic induction loop; the conductive row passes through the corresponding magnetic induction loop; the magnetic induction element is used for inducting the current on the conductive row passing through the magnetic induction loop; and the inducted current signal is sent to the control module; the control module monitors whether the current signal exceeds a threshold value; when the threshold value is exceeded, the control module sends a trigger signal to the excitation source; and the excitation source acts to cut off the conductive row. The Hall element cooperates with the control module to monitor the current in real time, and the control module controls the trigger signal, so that the response speed of the excitation fuse is improved.

Description

Technical Field

[0001] This invention relates to the fields of power control and electric vehicles, and in particular to excitation fuses for scenarios requiring real-time monitoring of current changes for current interruption. Background Technology

[0002] Currently, excitation fuses used for circuit protection employ mechanical methods to disconnect conductors and achieve circuit protection. A typical excitation fuse includes an excitation source, a piston, and a conductor bus. The excitation source is generally a gas generator that receives a trigger signal from an external triggering circuit and releases high-pressure gas as the driving force. The conductor bus connects the excitation fuse in series with the protection circuit, and the current in the main circuit flows through the conductor bus. The piston is positioned corresponding to the conductor bus; the high-pressure gas released by the excitation source drives the piston to move, thus disconnecting the conductor bus and achieving circuit protection. To improve arc extinguishing capability, a fusible element can also be connected in parallel with the conductor bus for arc extinguishing.

[0003] Since the excitation fuse itself does not have real-time current monitoring capability, the user needs to monitor the current in real time outside the excitation fuse. When the current is overloaded or short-circuited, the user control system conducts the external trigger circuit, and sends a trigger signal through the external trigger circuit to trigger the excitation source to act. As a result, the existing excitation fuse has a relatively slow response speed, which cannot meet the working requirements in some scenarios that require high response. Summary of the Invention

[0004] The purpose of this invention is to realize an excitation fuse with real-time current monitoring and high-speed response by integrating a Hall element that monitors current changes in real time on the excitation fuse and combining it with a PCB control board.

[0005] To achieve the above objectives, the present invention provides a stimulating fuse with integrated Hall elements, comprising a stimulating fuse housing, at least one conductive busbar, and a stimulating source; the stimulating fuse housing is integrated with a Hall element mounting module and a control module, the Hall element mounting module being provided with at least one Hall element; each Hall element is correspondingly provided with a magnetic induction element to form a magnetic induction loop; the conductive busbar passes through the corresponding magnetic induction loop, the magnetic induction element is used to sense the current on the conductive busbar passing through the magnetic induction loop; and sends the sensed current signal to the control module, the control module monitoring whether the current signal exceeds a threshold, and when it exceeds the threshold, the control module sends a trigger signal to the stimulating source, the stimulating source actuating to cut off the conductive busbar.

[0006] Preferably, when the excitation fuse is used in a DC system, if the control module detects that the current signal of one of the conductors exceeds a threshold, the control module sends a trigger signal to the excitation source.

[0007] Preferably, when the excitation fuse is used in an AC system, if the control module detects that the current signals of at least two of the conductors exceed a threshold, the control module sends a trigger signal to the excitation source.

[0008] Preferably, the Hall element is a silicon steel sheet with a U-shaped structure; one end of the conductive bus passes through the Hall element mounting module, and the Hall element is arranged around the conductive bus.

[0009] Preferably, the Hall element is embedded in the Hall element mounting module, forming a U-shaped groove structure at the location of the Hall element. One end of the conductive busbar passes through the U-shaped groove structure, and the magnetic induction element is correspondingly disposed at the opening end of the U-shaped groove structure of the Hall element, forming a magnetic induction circuit with the Hall element.

[0010] Preferably, the Hall element and the Hall element mounting module are integrally injection molded.

[0011] Preferably, when there are two or more conductive busbars, the Hall element is configured in a one-to-one correspondence with the conductive busbar and the magnetic induction element.

[0012] Preferably, the magnetic sensing element is disposed on the control module, and the control module is disposed on the Hall element mounting module.

[0013] Preferably, the excitation fuse housing and the Hall element mounting module are integrally formed.

[0014] Preferably, the excitation fuse housing consists of at least two independent parts, one of which is integrally formed with the Hall element mounting module.

[0015] Preferably, the conductive busbar is disposed on the housing of the excitation fuse, the excitation source is disposed on the housing of the excitation fuse, and a piston is disposed in the housing of the excitation fuse, with the impact ends of the piston respectively corresponding to the conductive busbar; the driving force released by the excitation source acts on the piston, driving the piston to move and cut off the conductive busbar.

[0016] Preferably, arc-extinguishing melts are connected in parallel on the conductive busbar.

[0017] Preferably, an arc-extinguishing chamber is provided in the housing of the excitation fuse, the arc-extinguishing chamber is filled with an arc-extinguishing medium, and the arc-extinguishing melt passes through the arc-extinguishing medium.

[0018] Preferably, arc-extinguishing chambers are respectively provided on the excitation fuse housing outside the cavity where the piston is located and the piston displacement path, the arc-extinguishing chambers are filled with arc-extinguishing medium, and the arc-extinguishing melt is inserted in the arc-extinguishing medium.

[0019] Preferably, when the arc-extinguishing melt is located on or ahead of the displacement path of the piston after disconnecting the conductive busbar, a displacement channel is provided in the arc-extinguishing chamber, the arc-extinguishing melt passes through the displacement channel, and a melt cutter assembly is provided in the displacement channel. The arc-extinguishing melt is located on the displacement path of the melt cutter assembly, or the arc-extinguishing melt passes through the melt cutter assembly. When the piston disconnects the conductive busbar and continues to displace, the melt cutter assembly is driven to displace, thereby disconnecting the arc-extinguishing melt.

[0020] This invention integrates a Hall element and a control module. The magnetic induction element on the control module works in conjunction with the Hall element to monitor the current flowing through the busbar in real time. When the current exceeds a set threshold, the control module can immediately send a trigger signal to the excitation source, causing the excitation source to activate and disconnect the busbar. Because the Hall element is integrated on the outside of the excitation fuse, the response speed is fast and the disconnection is rapid. It also eliminates the need for external trigger circuits and monitoring devices for the main circuit current at the user end, saving on the number of components and the need for external trigger circuits, making the excitation fuse more convenient to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure between the conductive busbar and the Hall element of the excitation fuse of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure in which the Hall element is installed in the Hall element mounting module.

[0024] Figure 4 This is a schematic diagram of the main structure of an integrated Hall element for an excitation fuse with three conductive busbars.

[0025] Figure 5 yes Figure 4 A top-view structural diagram.

[0026] Figure 6 This is a cross-sectional view of the Hall element integrated into the excitation fuse of a three-channel busbar.

[0027] Figure 7 yes Figure 4 A side view structural diagram.

[0028] Figure 8 This is a schematic diagram of the main structure of a three-channel busbar-driven excitation fuse.

[0029] Figure 9 yes Figure 8 A side view structural diagram.

[0030] Figure 10 yes Figure 4 A schematic diagram of the piston structure.

[0031] Figure label:

[0032] 1. Excitation fuse housing; 2. Hall element mounting module; 3. Hall element; 4. U-shaped groove structure; 5. Control module; 6. Wire harness connector; 7. Conductive busbar; 8. Pre-break; 9. First housing; 102. Second housing; 103. Third housing; 104. Protective bottom cover; 105. Piston; 106. Impact end; 107. Excitation source; 108. Arc extinguishing chamber; 109. Arc extinguishing chamber; 110. Parallel fusible element; 111. Detailed Implementation

[0033] The integrated Hall element excitation fuse of the present invention includes an excitation fuse housing, at least one conductive busbar, and an excitation source. The excitation fuse housing is integrated with a Hall element mounting module and a control module. At least one Hall element is disposed in the Hall element mounting module. A magnetic induction element is disposed correspondingly to the Hall element to form a magnetic induction circuit. The conductive busbar passes through the corresponding magnetic induction circuit, and the magnetic induction element is used to sense the current on the conductive busbar passing through the magnetic induction circuit. The sensed current signal is sent to the control module. The control module monitors whether the current signal exceeds a threshold. When the threshold is exceeded, the control module sends a trigger signal to the excitation source, and the excitation source is activated to cut off the conductive busbar.

[0034] Arc-extinguishing fuses are connected in parallel on the busbars. These fuses can either melt or mechanically disconnect under the piston drive of the activating fuse. The control module is a PCB control board.

[0035] The excitation source of the excitation fuse of the present invention is a gas generating device, which can receive a trigger signal and release high-pressure gas.

[0036] When the excitation fuse with integrated Hall element is used in a DC system, the control module sends a trigger signal to the excitation source when the current of one conductor exceeds the threshold. When used in an AC system, the control module can only send a trigger signal to the excitation source when the current of at least two conductors in the three-phase circuit exceeds the threshold.

[0037] The following describes preferred embodiments in detail with reference to the accompanying drawings. The directional terms used are for reference only and do not constitute a limitation on the technical solution of this invention.

[0038] The integrated Hall element excitation fuse of the present invention, see below. Figures 1 to 10The system includes an excitation fuse housing 1, an excitation source 108, a piston 106, at least one conductive bus 100, a Hall element mounting module 2, a Hall element 3, and a control module 5. The excitation fuse housing 1, the Hall element mounting module 2, and the control module 5 are integrated. Specifically, the excitation fuse housing 1 and the Hall element mounting module 2 are directly integrated. The Hall element mounting module 2 can be integrated inside or outside the excitation fuse housing 1. The control module 5 is mounted on either the Hall element mounting module 2 or the excitation fuse housing 1. The following explanation uses the example of the Hall element mounting module 2 being integrated outside the excitation fuse housing 1, with the control module 5 mounted on the Hall element mounting module 2.

[0039] The excitation fuse housing 1 consists of at least two parts, which can be arranged vertically or horizontally. In this embodiment, it is arranged vertically. The excitation source 108 is a gas generating device, which is disposed on the excitation fuse housing 1. It can act according to the received trigger signal, releasing high-pressure gas as a driving force to drive the piston 106 to move. A cavity for the piston 106 to move is provided in the excitation fuse housing 1, and the piston 106 is disposed in the cavity. The cavity at the end of the piston 106 away from the conductor 100 is connected to the cavity at the end of the excitation source 108 where the high-pressure gas is released, so that the released high-pressure gas can act on the end face of the piston 106 and drive the piston 106 to move. The piston 106 is preferably in sealed contact with the inner wall of the cavity of the excitation fuse housing 1, but it can be not sealed, as long as the high-pressure gas drives the piston 106 to move and break the conductor 100.

[0040] The conductive busbar 100 passes through the housing 1 of the excitation fuse, through the cavity where the piston 106 is located, and is on the displacement path of the piston 106. Both ends of the conductive busbar 100 are located outside the housing 1 of the excitation fuse as connection ends. When there are two or more conductive busbars 100, an insulating gap is provided between the two or more conductive busbars 100.

[0041] The Hall element mounting module 2 is integrated with the bottom of the excitation fuse housing 1, so that the Hall element mounting module 2 is located on the outside of the excitation fuse housing 1. Preferably, the lower side of the Hall element mounting module 2 is integrally formed with the bottom of the excitation fuse housing 1. See Figure 2 As shown. The Hall element 3 is disposed on the upper part of the Hall element mounting module 2. There can be one or more Hall elements 3, and the number of Hall elements 3 is determined according to the number of conductive bars. The Hall element 3 is a U-shaped silicon steel sheet. Preferably, the Hall element 3 is embedded in the top of the Hall element mounting module 2, see [reference]. Figure 3A U-shaped groove structure 4 is formed at the location where the Hall element 3 is embedded, and a U-shaped silicon steel sheet is located inside the U-shaped groove structure 4. One end of the conductive bus 100 located outside the housing passes through the U-shaped groove structure 4, and the position of the U-shaped groove structure 4 is set to facilitate the passage of the conductive bus. Preferably, the conductive bus 100 located in the U-shaped groove structure 4 is fixed by an insulating pressure block. A magnetic induction element is correspondingly set at the open end of each U-shaped groove structure 4, that is, at the open end of each Hall element 3. The Hall element 3 and the magnetic induction element form a magnetic induction circuit for detecting the current on the conductive bus passing through the U-shaped groove of the Hall element 3. The Hall element 3, the conductive bus 100 and the magnetic induction element are arranged in a one-to-one correspondence to form several non-interfering magnetic induction circuits to avoid signal transmission errors caused by magnetic circuit confusion. The Hall element mounting module 2 and the excitation fuse housing 1 are preferably integrally formed, and the Hall element 3 and the Hall element mounting module 2 are preferably integrally injection molded.

[0042] Control module 5 is a PCB board containing functional modules for controlling the actions of various parts. Control module 5 is positioned on top of the Hall element mounting module 2 and is insulated from the conductive busbar 100. A magnetic sensing element (not shown) is mounted on control module 5.

[0043] The magnetic induction element detects the current passing through the conductive busbar 100 in the magnetic induction loop and sends the detected current signal of the conductive busbar 100 to the central control unit of the control module 5. The central control unit of the control module 5 determines whether the current of the conductive busbar detected by the magnetic induction element exceeds a set threshold. If the central control unit of the control module 5 determines that the current of the conductive busbar exceeds the set threshold, the control module 5 sends a trigger signal to the excitation source, and the excitation source activates to cut off the conductive busbar; if it determines that the current does not exceed the set threshold, the control module does not send a trigger signal, and the excitation source does not activate.

[0044] The Hall element with a U-shaped structure of the present invention is arranged around the outer periphery of the conductive busbar 100 of the excitation fuse 1. When current flows through the conductive busbar 100, a magnetic field is formed on the outer periphery of the conductive busbar 100. The magnetic induction element on the control module 5 senses the magnetic field, and an induced potential difference is formed across the magnetic induction element. Different current magnitudes result in different potential differences across the magnetic induction element. When the current in the conductive busbar increases, the potential difference across the magnetic induction element also increases.

[0045] When the excitation fuse is used in a DC system, only one conductor current needs to be monitored. That is, when the control module 5 determines that the current of one conductor exceeds the threshold, the control module 5 sends a trigger signal to the excitation source, and the excitation source is activated.

[0046] When the excitation fuse is used in an AC system, it is necessary to detect the current of at least two conductors in the three-phase circuit. When the control module 5 determines that the current of both conductors exceeds the threshold, the control module 5 sends a trigger signal to the excitation source, and the excitation source is activated.

[0047] When the excitation fuse housing 1 is composed of at least two parts, they can be arranged vertically or horizontally. When the at least two parts are arranged vertically, the bottom of the excitation fuse housing 1 is integrally formed with the lower end of the Hall element mounting module 2, and the Hall element 3 is located on the outside of the excitation fuse housing 1.

[0048] Since the Hall element and control module are integrated on the outside of the excitation fuse housing, the Hall element monitors the current flowing through the conductor 100 (main circuit current) in real time. When the current exceeds a set threshold, the magnetic induction element on the control module 5 senses the change in the magnetic field of the Hall element in real time, thereby controlling the triggering of the excitation source. Compared with existing excitation fuses that send trigger signals through the user-end control system and external triggering circuit, this invention integrates real-time monitoring and timely response to send trigger signals, resulting in a faster response speed. It avoids the need for the user-end control system to add a corresponding external triggering control module based on the excitation fuse's specifications. Therefore, the excitation fuse of this invention can be directly used at the client end, making the application more convenient.

[0049] The conductor bar of the excitation fuse can be one, two, three, or even more conductor bars. When there are two or more conductor bars, the conductor bars are insulated from each other. Each conductor bar corresponds to one Hall element and one magnetic induction element. That is, each conductor bar must pass through the U-shaped slot of a Hall element, that is, through the magnetic induction circuit formed by the Hall element and the magnetic induction element.

[0050] When the conductors of the excitation fuse 1 are two or more, the conductors can be insulated side-by-side or vertically. When vertically insulated, they can be completely staggered vertically without interference, or they can be directly opposite each other. A pre-break 101 is only set at the position of the conductor corresponding to the piston's impact end, and the pre-break 101s of the two or more conductors are staggered. The piston's impact end also corresponds to the pre-break 101 of the conductor.

[0051] A pre-break 101 is formed on the conductive busbar corresponding to the impact end of the piston to reduce mechanical strength. The pre-break 101 is formed by a weak point, such as a U or V-shaped groove, so that when the piston impacts the conductive busbar, the break point of the conductive busbar can break according to the pre-designed break point and break path and move away from the conductive busbar body along the break path.

[0052] The arc-extinguishing capability of an excitation fuse can be improved by connecting a fusible element in parallel to the conductor busbar. An arc-extinguishing chamber is set inside the fuse housing, filled with an arc-extinguishing medium, and the fusible element is inserted within this medium. The two ends of the fusible element are electrically connected to the two ends of the pre-break of the conductor busbar, so that during normal current flow, the current flows through the conductor busbar; after the conductor busbar is disconnected, the current flows through the fusible element, which can either melt or be mechanically broken. To reduce the size of the excitation fuse and make its structure more compact, the arc-extinguishing element is located in the fuse housing on the outer periphery of the piston fire cavity and piston displacement path. Correspondingly, the arc-extinguishing chamber is located between the piston cavity and piston displacement path periphery and the outer wall of the fuse housing, making full use of the internal space of the fuse housing. To facilitate installation and filling of the arc-extinguishing medium, the housing of the excitation fuse is composed of at least two housing parts spliced ​​together. A groove is provided between the contact surfaces of each housing part on the outer periphery of the piston displacement path, and a cover is provided on the groove to form a sealed arc-extinguishing chamber.

[0053] The following is a detailed explanation of the structure using a three-channel busbar as an example of an excitation fuse.

[0054] Excite the fuse, see Figures 4 to 9 The device includes three conductive bars 100 with spaced insulation. In this embodiment, the three conductive bars are arranged in a parallel manner with spaced insulation in the housing. In other embodiments, the three conductive bars can be arranged with spaced insulation between the upper and lower parts or in other ways.

[0055] The fuse housing 1 comprises a first housing 102, a second housing 103, a third housing 104, and a protective bottom cover 105, which are sequentially assembled. Conductive bars 100 are respectively installed between the second housing 103 and the third housing 104. The three conductive bars 100 share a single piston 106. (See attached diagram) Figure 10 The piston 106 has three impact ends 107 at one end facing the conductive busbar, each impact end corresponding to one conductive busbar. The excitation source 108 is disposed in the first housing 102, and the piston 106 is disposed in both the second housing 103 and the first housing 102. The piston 106 is positioned corresponding to the conductive busbar. The cavity at the end of the piston 106 facing the excitation source 108 is connected to the cavity at the end of the excitation source 108 where high-pressure gas is released, forming a sealed cavity to prevent leakage of high-pressure gas released from the excitation source 108, which would affect the piston's kinetic energy. The sealed contact between the piston and the second housing can be achieved through an interference fit or by providing a sealing ring on the outer peripheral wall of the piston where it contacts the inner wall of the second housing.

[0056] An arc-extinguishing groove is provided on the end face of the second housing adjacent to the first housing, and a sealing cover is provided on the arc-extinguishing groove to form a sealed arc-extinguishing chamber 109. An arc-extinguishing groove is provided on the end face of the third housing adjacent to the protective bottom cover, and the arc-extinguishing groove is sealed by the protective bottom cover to form a sealed arc-extinguishing chamber 110. Arc-extinguishing chambers 109 and 110 can each be one, or one arc-extinguishing chamber can be two and the other one, with the principle of facilitating the passage of the parallel fusible element 111 and easy installation. Parallel fusible elements 111 are connected in parallel on the three conductive busbars 100. When there is only one arc-extinguishing chamber 109 and one arc-extinguishing chamber 110, the parallel fusible elements of two of the three conductive busbars are placed in one arc-extinguishing chamber. However, insulation must be maintained between the parallel fusible elements to prevent arc crossing between the arcs generated after the parallel fusible elements are broken, which would affect the breaking and extinguishing of the arc.

[0057] To simplify the assembly process, the third housing 104 is integrally molded with the Hall element mounting module 2 and the Hall element 3 through injection molding, forming an integrated connection between the Hall element mounting module 2 and the excitation fuse housing 1. Three U-shaped Hall elements 3, made of silicon steel sheets, are embedded at intervals on the top of the Hall element mounting module 2 using injection molding. The three conductive busbars 100 extend from their outer ends, passing through the U-shaped groove structure 4 where the corresponding Hall element 3 is located. Since the Hall element 3 is embedded within the Hall element mounting module 2, an insulating layer is provided between the conductive busbars and the Hall element 3. A magnetic induction element is positioned above the Hall element 3 corresponding to each conductive busbar 100, ensuring that each set of conductive busbars 100 is located within the magnetic induction loop formed by the Hall element 3 and the magnetic induction element. The signal receiving end of the excitation source 108 is connected to the control module 5 via a wire harness connector 6.

[0058] In other embodiments, a melt disconnection assembly is also provided at the parallel melt location. The parallel melt and the melt disconnection assembly are respectively positioned on the piston displacement path after the conductive plate is disconnected. A displacement channel is provided in the arc-extinguishing chamber, through which the parallel melt passes, and the melt disconnection assembly passes through the displacement channel and clamps and fixes the parallel melt; or the parallel melt is located on the displacement path of the melt disconnection assembly. When the piston disconnects the conductive busbar, the piston continues to displace, driving the melt disconnection assembly to displace and cut off the parallel melt.

[0059] Therefore, the parallel melt of the present invention can be melted or mechanically cut off.

[0060] The excitation fuse in this embodiment can be applied to a three-phase circuit. Since a three-phase circuit is an AC system, the control module 5 can only send a trigger signal to the excitation source 108 when at least two conductor currents exceed the threshold. For example, the excitation fuse is applied in a protection system circuit. When a fault current occurs in a single circuit of the protection system, the magnetic induction element will feed back the real-time monitored current information to the control module. When the control module determines that two conductor currents exceed the threshold, it sends a trigger signal to the excitation source. After the excitation source is triggered, it releases the driving force, driving the piston to move. The piston simultaneously disconnects the three conductors. After the conductors are disconnected, all the current flows through the arc-extinguishing fuse connected in parallel with the conductors. The arc-extinguishing fuse heats up and melts rapidly, thus disconnecting the entire three-phase circuit. This avoids the circuit inductance from being superimposed on the current-carrying circuit after a single-phase segmentation, which could lead to a circuit fault.

[0061] The aforementioned excitation fuse with three conductor bars can also be used in DC systems, with each conductor bar connected to one circuit. Therefore, when the magnetic sensing element sends the current information of the corresponding conductor bar to the control module, the control module only needs to determine that the current of one conductor bar exceeds the threshold. Then, the control module sends a trigger signal to the excitation source. After the excitation source is triggered, it releases the driving force, drives the piston to move, and the piston disconnects the three conductor bars.

[0062] When its conductor busbar is in one or two phases, it can be applied to a single-phase circuit or a two-phase circuit, respectively.

[0063] The excitation fuse of the present invention is applicable to all existing excitation fuse structures including an excitation source, a piston, and a conductor busbar.

Claims

1. A trigger fuse with integrated Hall element, characterized in that, The device includes an excitation fuse housing, at least one conductive busbar, and an excitation source. The excitation fuse housing is integrated with a Hall element mounting module and a control module. The Hall element mounting module contains at least one Hall element. Each Hall element is associated with a magnetic induction element to form a magnetic induction loop. The conductive busbar passes through the corresponding magnetic induction loop, and the magnetic induction element senses the current flowing through the conductive busbar. The sensed current signal is then sent to the control module. The control module monitors whether the current signal exceeds a threshold. If the threshold is exceeded, the control module sends a trigger signal to the excitation source, which then activates to disconnect the conductive busbar.

2. The excitation fuse according to claim 1, characterized in that, When the excitation fuse is used in a DC system, if the control module detects that the current signal of one of the conductors exceeds a threshold, the control module sends a trigger signal to the excitation source.

3. The excitation fuse according to claim 1, characterized in that, When the excitation fuse is used in an AC system, if the control module detects that the current signals of at least two of the conductors exceed the threshold, the control module sends a trigger signal to the excitation source.

4. The excitation fuse according to claim 1, characterized in that, The Hall element is a U-shaped silicon steel sheet; one end of the conductive bus passes through the Hall element mounting module, and the Hall element is arranged around the conductive bus.

5. The excitation fuse according to claim 4, characterized in that, The Hall element is embedded in the Hall element mounting module, forming a U-shaped groove structure at the location of the Hall element. One end of the conductive busbar passes through the U-shaped groove structure, and the magnetic induction element is correspondingly arranged at the opening end of the U-shaped groove structure of the Hall element, forming a magnetic induction circuit with the Hall element.

6. The excitation fuse according to claim 1, characterized in that, The Hall element and the Hall element mounting module are integrally injection molded.

7. The excitation fuse according to claim 1, characterized in that, When there are two or more conductive busbars, the Hall element is set in a one-to-one correspondence with the conductive busbar and the magnetic induction element.

8. The excitation fuse according to claim 1, characterized in that, The magnetic sensing element is mounted on the control module, and the control module is mounted on the Hall element mounting module.

9. The excitation fuse according to claim 1, characterized in that, The excitation fuse housing is integrally formed with the Hall element mounting module.

10. The excitation fuse according to any one of claims 1 to 9, characterized in that, The excitation fuse housing consists of at least two independent parts, one of which is integrally formed with the Hall element mounting module.

11. The excitation fuse according to claim 10, characterized in that, The conductive busbar is installed on the housing of the excitation fuse, the excitation source is installed on the housing of the excitation fuse, and a piston is installed in the housing of the excitation fuse. The impact end of the piston is respectively installed on the conductive busbar. The driving force released by the excitation source acts on the piston, driving the piston to move and cut off the conductive busbar.

12. The excitation fuse according to claim 11, characterized in that, Arc-extinguishing melts are connected in parallel on the conductive busbar.

13. The excitation fuse according to claim 12, characterized in that, An arc-extinguishing chamber is provided in the housing of the excitation fuse, the arc-extinguishing chamber is filled with an arc-extinguishing medium, and the arc-extinguishing fusible element passes through the arc-extinguishing medium.

14. The excitation fuse according to claim 13, characterized in that, Arc-extinguishing chambers are respectively provided on the excitation fuse housing outside the cavity where the piston is located and the piston displacement path. The arc-extinguishing chambers are filled with arc-extinguishing medium, and the arc-extinguishing melt is inserted in the arc-extinguishing medium.

15. The excitation fuse according to claim 13, characterized in that, When the arc-extinguishing melt is located on or ahead of the displacement path of the piston after disconnecting the conductive busbar, a displacement channel is provided in the arc-extinguishing chamber, through which the arc-extinguishing melt passes. A melt cutter assembly is provided in the displacement channel, and the arc-extinguishing melt is located on the displacement path of the melt cutter assembly or passes through the melt cutter assembly. When the piston disconnects the conductive busbar and continues to displace, it drives the melt cutter assembly to displace, thereby disconnecting the arc-extinguishing melt.

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