Intelligent protection devices and motor systems for electric motors

Abstract

A smart protection device and motor system for an electric motor are provided. The smart protection device includes first and second housings; a straight conductor with a preset break point that penetrates the first housing and extends to the outside of the first housing; a breaking module including a breaking mechanism and a gas generating device respectively disposed in cavities of the first and second housings; first and second drain conductors, the first ends of which are respectively connected to the straight conductor on both sides of the preset break point, and the second ends of which respectively extend to the outside of the first housing; a fuse, the two ends of which are respectively connected to the second ends of the first and second drain conductors; a U-shaped magnetic element including two legs and a connecting portion, which is arranged to surround the straight conductor within the first housing, and the two legs extending to the outside of the first housing; an electronic control module connected to the ends of the two legs; and a magnetic sensor disposed on one side of the electronic control module facing the two legs.

Description

Technical Field

[0001] This utility model belongs to the field of motor protection, specifically relating to an intelligent protection device and motor system for motors, which is particularly suitable for scenarios with high reliability requirements such as new energy power control, energy storage systems and electric vehicles. Background Technology

[0002] The statements in this section are merely to provide background information related to this utility model to aid in understanding it, and this background information does not necessarily constitute prior art.

[0003] With the development of new energy power control, power storage, and electric vehicles, fuses have become an important electrical protection device widely used in circuit protection systems. However, as the industry's requirements for the integration of circuit protection systems continue to increase, the single function of fuses can no longer meet market demands. To address potential faults such as overcurrent and short circuits that may occur during motor operation, there is an urgent need for an integrated protection solution that combines real-time detection, intelligent analysis, and rapid disconnection functions. Utility Model Content

[0004] To address the aforementioned issues, it is necessary to design an intelligent protection device for motors. This device integrates a straight conductor, a current-draining conductor, a breaking module, an electronic control module, a fuse, a U-shaped magnetic element, and a magnetic sensor through a detachably connected first and second housing. The U-shaped magnetic element and the magnetic sensor form a current detection module capable of real-time monitoring of the current in the motor's main circuit. Upon detecting abnormalities such as short circuits, overcurrents, or overloads, the electronic control module sends a breaking signal, outputting an ignition current to a gas generator in the breaking module. This gas generator drives the breaking mechanism upwards, rapidly disconnecting the straight conductor connected to the motor's main circuit. The fault current is then transferred to the fuse via the current-draining conductor. The fuse quickly extinguishes the arc and prevents the circuit from reconnecting. This integrated design significantly reduces the risk of motor failure through the coordinated control of multiple components, while also optimizing the device's spatial layout, providing a fully closed-loop intelligent protection mechanism for the motor system. It achieves intelligent motor control, real-time detection, autonomous breaking, and rapid arc extinguishing, solving the problem of fuses having limited functionality and failing to meet market demands.

[0005] To achieve the above objectives, a first aspect of this disclosure provides an intelligent protection device for a motor, comprising: a first housing and a second housing, the first housing and the second housing being detachably connected; a straight conductor passing through the first housing and extending at both ends to the outside of the first housing to electrically connect to the main circuit of the motor, the straight conductor having a preset break; and a disconnecting module, wherein the disconnecting module has a disconnecting mechanism and a gas generating device respectively disposed in the cavities of the first housing and the second housing, and is configured to cut off the straight conductor;

[0006] The first and second drain conductors are provided, with a first end of the first drain conductor connected to the straight conductor on one side of the preset break, and a first end of the second drain conductor connected to the straight conductor on the other side of the preset break. The second ends of the first and second drain conductors extend to the outside of the first housing. A fuse is provided, with its two ends connected to the second ends of the first and second drain conductors, respectively. A U-shaped magnetic element is provided, including two legs and a connecting portion connecting the two legs. The U-shaped magnetic element is arranged to surround the straight conductor within the first housing and to extend the two legs to the outside of the first housing in a direction away from the fuse. An electronic control module is provided, connected to the ends of the two legs. A magnetic sensor is provided on the side of the electronic control module facing the two legs.

[0007] In some embodiments, the breaking mechanism is aligned with the position of a preset break.

[0008] In some embodiments, the first housing and the second housing have threaded holes aligned with each other and are connected to each other by bolts.

[0009] In some embodiments, the intelligent protection device further includes a third housing with a screw hole, and the first housing and the second housing are respectively provided with through holes, the through holes being aligned with the screw hole, and the third housing being connected to the first housing and the second housing by bolts passing through the through holes and the screw hole in sequence.

[0010] In some embodiments, the second housing is provided with a support structure for supporting the gas generating device.

[0011] In some embodiments, the breaking mechanism is a breaking grid.

[0012] In some embodiments, the U-shaped magnetic element is integrally injection molded with the straight conductor.

[0013] In some embodiments, the first housing and the second housing are injection-molded housings.

[0014] In some embodiments, the connection method between the first and second drain conductors and the fuse and the preset break is one of laser welding, crimping, and soldering.

[0015] A second aspect of this disclosure provides a motor system including a motor and the aforementioned intelligent protection device, wherein the straight conductor of the intelligent protection device is connected in the main circuit of the motor.

[0016] The intelligent protection device for motors provided in this invention integrates a straight conductor, a current-draining conductor, a disconnecting module, an electronic control module, a fuse, a U-shaped magnetic element, and a magnetic sensor through a detachably connected first and second outer shell. The U-shaped magnetic element and the magnetic sensor form a current detection module, which can detect the current in the motor's main circuit in real time. When abnormal conditions such as short circuits, overcurrents, and overloads are detected, the electronic control module sends a disconnecting signal, outputting an ignition current to the gas generator in the disconnecting module. This drives the opening mechanism in the disconnecting module to move upward, quickly cutting off the straight conductor connected to the motor's main circuit. The fault current is then transferred to the fuse via the current-draining conductor, and the fuse quickly extinguishes the arc and prevents the circuit from being reconnected. The integrated design of this device not only significantly reduces the risk of motor failure through the coordinated control of multiple components but also optimizes the spatial layout of the device, providing a fully closed-loop intelligent protection mechanism for the motor system. It achieves functions such as intelligent motor control, real-time detection, autonomous disconnection, and rapid arc extinguishing, solving the problem that fuses have limited functionality and cannot meet market demands. Attached Figure Description

[0017] Figure 1 An exploded view of the structure of an intelligent protection device according to an embodiment of the present invention is shown.

[0018] Figure 2 A cross-sectional view of an intelligent protection device according to an embodiment of the present invention is shown.

[0019] Figure 3 An assembly schematic diagram of an intelligent protection device according to an embodiment of the present invention is shown.

[0020] Figure 4 A partial structural schematic diagram of an intelligent protection device according to an embodiment of the present invention is shown.

[0021] Figure 5 A schematic diagram showing the positions of the U-shaped magnetic element and the straight conductor of an intelligent protection device according to an embodiment of the present invention is shown.

[0022] Figure 6 A schematic diagram of the connection position of the drain conductor of an intelligent protection device according to an embodiment of the present invention is shown.

[0023] Figure 7A schematic diagram of the main circuit connection of an intelligent protection device for a three-phase motor according to an embodiment of the present invention is shown.

[0024] Figure 8 A schematic diagram of the main circuit connection of an intelligent protection device for a two-phase motor according to an embodiment of the present invention is shown.

[0025] Figure 9 A schematic diagram of the main circuit connection of an intelligent protection device for a single-phase motor according to an embodiment of the present invention is shown.

[0026] The meanings of the labels in the attached diagram are as follows:

[0027] 1-Screw hole; 2-Third outer shell; 3-U-shaped magnetic element; 4-First outer shell; 5-Straight conductor; 6-Break-off mechanism; 7-Pyrotechnic base; 8-Pyrotechnic; 9-Support structure; 10-Second outer shell; 11-Bolt; 12-Electrical control module; 13-Magnetic sensor; 14-Fuse; 15-First current-draining conductor; 16-Preset break; 17-Break-off module. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments given in this utility model are for illustrative purposes only and do not limit the scope of protection of this utility model.

[0029] In describing embodiments of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" express orientations or positional relationships based on the orientations or positional relationships shown in the relevant drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present invention.

[0030] In the description of this utility model, when ordinal numbers such as "first" and "second" are used to modify nouns, this usage is only to distinguish one item from another, and unless otherwise specified, there is no intention to require a specific order. In the description of this utility model, unless otherwise specified, "multiple" means two or more.

[0031] Figures 1-4 Exploded view, sectional view, assembly diagram, and partial structural diagram of an intelligent protection device according to an embodiment of the present invention are shown respectively. In this embodiment, as... Figure 1As shown, the intelligent protection device includes: a first housing 4 and a second housing 10, which are detachably connected; a straight conductor 5, which passes through the first housing 4 and extends to the outside of the first housing 4 at both ends to electrically connect to the main circuit of the motor, the straight conductor 5 having a preset break 16; a disconnecting module 17, the disconnecting module having a disconnecting mechanism 6 and a gas generating device respectively disposed in the cavities of both the first housing 4 and the second housing 10, and configured to cut off the straight conductor 5; a pair of draining conductors (including a first draining conductor and a second draining conductor, only the first draining conductor 15 is shown in the figure, the second draining conductor is on the other side of the straight conductor 5 and is not shown), the first end of the first draining conductor 15 is connected to the straight conductor 5 on one side of the preset break 16, the first end of the second draining conductor is connected to the straight conductor 5 on the other side of the preset break 16, and the second end of each of the pair of draining conductors extends to the outside of the first housing 4, in the embodiment of this utility model. In the example, the two sides of the straight conductor 5 refer to the two sides of the straight conductor 5 perpendicular to the current flow direction, while the two sides of the preset break 16 refer to the two sides of the preset break 16 along the current flow direction. Preferably, the first end of the first current-leading conductor 15 near the first end of the preset break 16 is connected to the straight conductor 5 on one side of the preset break 16, and the first end of the second current-leading conductor near the second end of the preset break 16 is connected to the straight conductor 5 on the other side of the preset break 16; the fuse 14 has its two ends respectively connected to the second end of one of the corresponding current-leading conductors; the U-shaped magnetic element 3 includes two legs and a connecting part connecting the two legs, the U-shaped magnetic element 3 surrounds the straight conductor 5 inside the first housing 4, and the two legs extend to the outside of the first housing 4 in a direction away from the fuse 14; the electronic control module 12 is connected to the ends of the two legs; the magnetic sensor 13 is disposed on the side of the electronic control module 12 facing the two legs.

[0032] In some embodiments, preferably, the breaking mechanism 6 is a breaking grid, which can not only provide a reliable breaking effect, but also optimize arc extinguishing performance and reduce energy consumption.

[0033] In some embodiments, preferably, the U-shaped magnetic element 3 can be a silicon steel sheet magnetic ring. The silicon steel sheet magnetic ring has high permeability, which can more effectively concentrate and guide the magnetic field, thereby improving the sensitivity and accuracy of current detection. Furthermore, the silicon steel sheet magnetic ring can maintain stable magnetic properties over a wide temperature range, enabling the intelligent protection device to operate reliably under different ambient temperatures.

[0034] In some embodiments, preferably, the magnetic sensor 13 can be a Hall sensor, which can detect minute changes in magnetic field and has a fast response speed, thereby achieving high sensitivity detection of current. Furthermore, Hall sensors are small in size and easy to integrate into intelligent protection devices.

[0035] In some embodiments, preferably, the breaking mechanism 6 is aligned with the position of the preset break 16 to more easily cut the straight conductor 5. In such cases... Figure 2 In the embodiment shown, the breaking mechanism 6 is located directly below the preset break 16 to cut the straight conductor 5.

[0036] In some embodiments, such as Figure 1 and 2 As shown, the gas generating device includes a pyrotechnic element 8 and a pyrotechnic element base 7. One side of the pyrotechnic element base 7 is connected to the switching mechanism 6, and the other side is sleeved and fixed on the pyrotechnic element 8. Specifically, the pyrotechnic element 8 is connected to the electronic control module 12 via a lead wire, thereby allowing the electronic control module 12 to quickly issue a disconnection signal when an abnormal current is detected.

[0037] Specifically, such as Figure 1 and 2 As shown, when the straight conductor 5 is energized, the U-shaped magnetic element 3 generates an induced magnetic field, which is detected in real time by the magnetic sensor 13, which outputs a Hall voltage to sample and compare the main circuit current. When abnormal conditions such as short circuit, overcurrent, or overload are detected, the electronic control module 12 sends a disconnection signal and outputs an ignition current to the pyrotechnic device 8. The pyrotechnic device 8 rapidly releases a large amount of gas, which pushes the breaking mechanism 6 upward, quickly cutting off the preset break 16 of the straight conductor 5 and transferring the fault current to the fuse 14. The fuse 14 then extinguishes the arc and absorbs the fault current energy, thereby protecting the motor.

[0038] In some embodiments, such as Figure 1 and 3 As shown, the intelligent protection device also includes a third housing 2, which protects the first housing 4 and assists in the connection between the first housing 4 and the second housing 10. Specifically, the third housing 2 is provided with a screw hole 1, and the first housing 4 and the second housing 10 are provided with through holes that are aligned with each other and aligned with the screw hole 1 on the third housing 2. The bolt 11 passes through the through hole and is screwed into the screw hole 1 to achieve a tight connection of the three housings. Preferably, the through holes in the first housing 4 and the second housing 10 are screw holes 1 that match the bolt 11. In this case, a tight connection can be achieved without the need for the third housing 2.

[0039] In some embodiments, the second housing 10 is provided with a support structure 9 for supporting the gas generating device. Specifically, the support structure 9 provides stable support for the pyrotechnic 8 and the pyrotechnic base 7, ensuring the stability and reliability of the disconnecting module 17 during operation.

[0040] In some embodiments, the pyrotechnic component 8 and the pyrotechnic component base 7 are press-fitted, which can reduce or eliminate the gap between them and help improve the sealing performance of the pyrotechnic component 8.

[0041] Preferably, such as Figure 2 As shown, the support structure 9 is a steel sleeve made of stainless steel. Stainless steel sleeves have high hardness and wear resistance, and can withstand large tensile and torque forces.

[0042] In some embodiments, the third housing 2 is integrally injection molded with the nut to form a third housing 2 having a screw hole 1. Preferably, the nut is an insert nut, and the insert nut is made of stainless steel. Stainless steel nuts have high hardness and wear resistance, and can withstand large tensile and torque forces.

[0043] In some embodiments, such as Figure 5 The diagram shown is a schematic representation of the position of the U-shaped magnetic element 3 and the straight conductor 5 in an intelligent protection device according to an embodiment of the present invention. The first outer shell 4 is an injection-molded shell, and the U-shaped magnetic element 3 and the first outer shell 4 are integrally injection molded to ensure that there is no gap between the U-shaped magnetic element 3 and the first outer shell 4, making the structure more robust and preventing loosening or falling off.

[0044] In some embodiments, such as Figure 5 As shown, the U-shaped magnetic element 3 surrounds the straight conductor 5, and the two are combined into a whole structure through injection molding to ensure the structural strength and stability.

[0045] In some embodiments, such as Figure 2 As shown, the support structure 9 and the second outer shell 10 are integrally injection molded.

[0046] The entire intelligent protection device is assembled through one-piece injection molding, eliminating the need for subsequent assembly. This not only improves production efficiency, reduces costs, and enhances product performance, but also allows for precise control of the size and shape of each component. The high dimensional consistency of the components produced in a single injection molding process reduces quality issues caused by assembly errors.

[0047] In some embodiments, the first housing 4, the second housing 10, and the third housing 2 are all injection-molded housings, and their materials are at least one of synthetic insulating materials such as PA66, PA6, PPSU, PPA, and PC.

[0048] In some embodiments, such as Figure 6The diagram shown illustrates the connection positions of the current-carrying conductors in an intelligent protection device according to an embodiment of the present invention. The first end of the first current-carrying conductor 15, near the first end of the preset break 16, is connected to the straight conductor 5 on one side of the preset break 16. The second end of the first end of the second current-carrying conductor, near the second end of the preset break 16, is connected to the straight conductor 5 on the other side of the preset break 16. The second ends of the two current-carrying conductors are respectively connected to both ends of the fuse 14. The current-carrying conductors can have one or more configurations, such as a Z-shape or other suitable shapes, to facilitate effective connection with the fuse 14 and the straight conductor 5. The specific shape design should meet the requirements of being able to connect to both ends of the fuse 14 and to the straight conductor 5 on both sides of the preset break 16.

[0049] In some embodiments, the electronic control module 12 is powered by an external power source, which can make it independent of the motor's power system. This ensures that even if the motor power supply fails, the electronic control module 12 can still work normally, thus ensuring the reliability of the intelligent protection device.

[0050] In some embodiments, external power supply allows the electronic control module 12 to use different power options, such as batteries, solar panels or external power grids, increasing the flexibility and adaptability of the smart protection device.

[0051] In some embodiments, when the magnetic sensor 13 detects that the main circuit current exceeds a preset safety threshold, the electronic control module 12 sends a disconnection signal to the disconnection module 17 to cut off the straight conductor 5 to prevent the motor from being damaged or burned out.

[0052] In some embodiments, the electronic control module 12 can adjust the preset safety threshold according to different motor types. By setting appropriate safety thresholds for different motor types, it can more effectively prevent faults such as overload and short circuit, extend the service life of the motor, and improve the safety and reliability of the intelligent protection device.

[0053] In some embodiments, such as Figure 7 The diagram shows the main circuit connection of the intelligent protection device for a three-phase motor. When the motor M is a three-phase motor, the intelligent protection device described in the previous embodiment is installed in any two or three of the three phases U, V, and W, wherein the straight conductor 5 of the intelligent protection device is connected to the main circuit of the corresponding phase of the three-phase motor. Figure 7 In the illustrated embodiment, intelligent protection devices are installed in the U and V phases of the three-phase motor. When the intelligent protection device detects and disconnects the fault current, any two or three phases of the three-phase motor M are disconnected, causing the three-phase motor M to stop running immediately, thereby preventing the motor from being damaged or burned out.

[0054] In some embodiments, such as Figure 8The diagram shows the main circuit connection of an intelligent protection device for a two-phase motor. When the motor M is a two-phase motor (e.g., including only U-phase and V-phase), the intelligent protection device described in the previous embodiment is installed in any one or both of the U-phase and V-phases, wherein the straight conductor 5 of the intelligent protection device is connected to the main circuit of the corresponding phase of the two-phase motor. Figure 8 In the illustrated embodiment, an intelligent protection device is installed in the U phase of the two-phase motor. When the intelligent protection device detects and disconnects the fault current, any one or two phases of the two-phase motor M are disconnected, causing the two-phase motor M to stop running immediately, thereby preventing the motor from being damaged or burned out.

[0055] In some embodiments, such as Figure 9 The diagram shows the main circuit connection of the intelligent protection device for a single-phase motor. When the motor M is a single-phase motor, the intelligent protection device described in the previous embodiment is installed on the live wire L, wherein the straight conductor 5 of the intelligent protection device is connected in the main circuit of the motor. When the intelligent protection device detects and disconnects the fault current, the live wire L in the single-phase motor M is disconnected, causing the single-phase motor M to stop running immediately, thereby preventing damage or burnout of the motor.

[0056] In some embodiments, the fuse 14 is connected in parallel with the main circuit, so that when the disconnecting module 17 cuts off the current, the fuse 14 can quickly intervene to extinguish the arc, reducing the risk of arc damage to equipment and personnel. Furthermore, the fuse 14 can reduce electromagnetic interference generated during disconnection, protecting other sensitive electronic components in the intelligent protection device.

[0057] In some embodiments, the connection method between the current-draining conductor and the fuse 14 and the straight conductor 5 is at least one of laser welding, crimping, and soldering. This ensures a firm and reliable connection between the current-draining conductor and the fuse 14 and the straight conductor 5, improving the safety and stability of the intelligent protection device. At the same time, depending on different application scenarios and requirements, a suitable connection method can be selected to achieve the best connection effect.

[0058] In some embodiments, the two sides of the straight conductor 5 can be connected in series with the main circuit of the motor by means of welding, crimping, or threaded connection. Specifically, the appropriate method can be flexibly selected according to actual application requirements and process conditions to ensure that the electrical connection between the straight conductor 5 and the main circuit of the motor is both safe and efficient.

[0059] In some embodiments, the fuse 14 may be cylindrical, elongated, or have other shapes suitable for a specific application. This invention does not limit the specific shape of the fuse 14, as long as it meets the predetermined current capacity and voltage level requirements.

[0060] The intelligent protection device for motors proposed in this invention integrates a straight conductor 5, a current-draining conductor, a disconnecting module 17, an electronic control module 12, a fuse 14, a U-shaped magnetic element 3, and a magnetic sensor 13 through a detachably connected first housing 4 and second housing 10. The U-shaped magnetic element 3 and the magnetic sensor 13 form a current detection module, which can detect the current in the motor's main circuit in real time. When abnormal conditions such as short circuits, overcurrents, and overloads are detected, the electronic control module 12 sends a disconnecting signal, outputting an ignition current to the gas generator in the disconnecting module 17. This causes the breaking mechanism 6 in the disconnecting module 17 to move upward and quickly disconnect the straight conductor 5 connected to the motor's main circuit. The fault current is then transferred to the fuse 14 via the current-draining conductor. The fuse 14 quickly extinguishes the arc and prevents the circuit from being reconnected. The integrated design of this device not only significantly reduces the risk of motor failure through the coordinated control of multiple components but also optimizes the spatial layout of the device, providing a fully closed-loop intelligent protection mechanism for the motor system. It realizes functions such as intelligent motor control, real-time detection, autonomous disconnection and rapid arc extinguishing, and solves the problem that fuses have only one function and cannot meet market demands.

[0061] In some embodiments, the intelligent protection device of this invention can be used to protect different types of motors, including at least one of single-phase, two-phase, and three-phase motors. By supporting multiple motor types, the intelligent protection device can be widely applied in various fields, providing flexibility and versatility, allowing a single design to meet diverse application needs.

[0062] In some embodiments, the electronic control module 12 includes at least an electronic control board. As the core component of the electronic control module 12, the electronic control board can issue a disconnection signal based on the real-time detection status of the current detection module to drive the action of the disconnection module 17. The electronic control module 12 integrates various electronic components, such as a microprocessor, memory, input / output interfaces, and other peripheral circuits, to achieve intelligent control of the entire intelligent protection device.

[0063] In some embodiments, the electronic control module 12 may integrate a user interface, such as a display screen or a communication interface, enabling users to more easily interact with the intelligent protection device, such as setting parameters, viewing status, and diagnosing faults.

[0064] This utility model's intelligent protection device, possessing functions such as intelligent motor control, real-time detection, autonomous disconnection, and rapid arc extinguishing, can be widely applied in various industries and fields, primarily including but not limited to overload and short-circuit protection for various industrial motors in industrial automation; generator protection in renewable energy equipment such as wind power and solar power generation in the energy sector; and motor protection for electric vehicles and electric buses in the transportation sector.

[0065] Due to the versatility and adaptability of this new type of intelligent motor protection device, it can provide stable and reliable protection for various equipment that uses motors, preventing production interruptions, equipment damage or safety accidents caused by motor failures, thereby improving the reliability and safety of the entire system.

[0066] Although the present invention has been described through preferred embodiments, the present invention is not limited to the embodiments described herein, and includes various changes and variations without departing from the scope of the present invention.

Claims

1. An intelligent protection device for an electric motor, characterized in that, include: A first housing and a second housing, wherein the first housing and the second housing are detachably connected; A straight conductor, which passes through the first housing and extends at both ends to the outside of the first housing to electrically connect the main circuit of the motor, the straight conductor having a predetermined break; The disconnecting module includes a disconnecting mechanism and a gas generating device respectively disposed in the cavities of the first housing and the second housing, and is configured to disconnect the straight conductor. A first drain conductor and a second drain conductor, wherein a first end of the first drain conductor is connected to the straight conductor on one side of the preset break, and a first end of the second drain conductor is connected to the straight conductor on the other side of the preset break, and the second ends of the first drain conductor and the second drain conductor extend to the outside of the first housing; A fuse, the two ends of which are respectively connected to the second end of the first current-draining conductor and the second end of the second current-draining conductor; A U-shaped magnetic element includes two legs and a connecting portion connecting the two legs. The U-shaped magnetic element is arranged to surround the straight conductor inside the first housing and the two legs extend to the outside of the first housing in a direction away from the fuse. An electronic control module is connected to the ends of the two support legs; as well as A magnetic sensor is disposed on one side of the electronic control module facing the two outriggers.

2. The intelligent protection device according to claim 1, characterized in that, The breaking mechanism is aligned with the preset break point.

3. The intelligent protection device according to claim 1, characterized in that, The first housing and the second housing have threaded holes aligned with each other and are connected to each other by bolts.

4. The intelligent protection device according to claim 1, characterized in that, It also includes a third housing, which has a screw hole. The first housing and the second housing are respectively provided with through holes, which are aligned with the screw holes. The third housing is connected to the first housing and the second housing by bolts that pass through the through holes and the screw holes in sequence.

5. The intelligent protection device according to claim 1, characterized in that, The second housing contains a support structure for supporting the gas generating device.

6. The intelligent protection device according to claim 1, characterized in that, The breaking mechanism is a breaking grid plate.

7. The intelligent protection device according to any one of claims 1-6, characterized in that, The U-shaped magnetic element and the straight conductor are integrally injection molded.

8. The intelligent protection device according to any one of claims 1-6, characterized in that, The first and second housings are injection molded housings.

9. The intelligent protection device according to any one of claims 1-6, characterized in that, The connection method between the first and second drain conductors and the fuse and the preset break is one of laser welding, crimping and soldering.

10. A motor system, characterized in that, It includes a motor and at least one intelligent protection device according to any one of claims 1-9, wherein the straight conductor of the intelligent protection device is connected in the main circuit of the motor.

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