Split current detection sensor

Abstract

This application relates to a split-type current sensing sensor, including a bottom shell, an electrical area module, a half-magnetic core area module, a top cover, a circuit board assembly, a magnetic core structure, a wedge-shaped clamping connection device, a pre-embedded metal threaded plate, and a buffer pad. The electrical area module and the half-magnetic core area module are separately arranged along the length of the bottom shell, and both are detachably connected to the bottom shell by bolts. With this split-type current sensing sensor, the electrical area module and the half-magnetic core area module are separately arranged, with electrical components and wiring concentrated in the electrical area module, eliminating wiring interference during disassembly. When adding to existing equipment, the bottom shell can be fixed first, and then the modules can be assembled without disassembling the original structure of the equipment. The wedge-shaped clamping connection device secures the parts, eliminating the need for potting, reducing assembly steps and material costs. For later maintenance, the parts can be removed by loosening the connecting bolts, avoiding damage caused by potting.

Description

Technical Field

[0001] This application relates to the field of energized copper busbar detection technology, specifically a split-type current detection sensor. Background Technology

[0002] The principle of current detection is to convert the measured current into a corresponding magnetic field signal and accurately acquire this magnetic field data. When current flows through a current-carrying conductor, according to the principle of "electromagnetism," a magnetic field is generated around the conductor, and the strength of this magnetic field is directly proportional to the magnitude of the current. Current sensors utilize special magnetically permeable materials to concentrate and conduct this magnetic field; for example, using a high-permeability magnetic core allows the magnetic field to pass through the core efficiently. A highly sensitive Hall element is then added to the magnetic field. When the changing magnetic field passes through the Hall element, a Hall electromotive force (EMF) is generated. By measuring and analyzing the Hall EMF, the magnitude of the measured current is indirectly obtained, achieving accurate current measurement and data acquisition.

[0003] Compared with traditional current detection sensors, this invention has the following features:

[0004] (1) Existing integrated current detection sensors are closed detection rings, which can only be installed during equipment design. Once the equipment is damaged, it is extremely difficult to repair or replace them. This patent uses a split modular design to centrally set the PCB circuit board and circuits on one side, while the other side is a single component without circuits. This increases the convenience of the sensor when it is disassembled and assembled, and increases the maintainability of the sensor.

[0005] (2) Traditional sensor components are mostly fixed by potting and positioning. The sensor structure of this patent achieves reliable positioning of internal parts through a wedge clamping device, which increases the maintainability of the equipment and simplifies the assembly process.

[0006] (3) Traditionally, the internal threads of sensor components are fixed by direct tapping or nested threaded sleeves. Both of these methods are prone to thread damage or threaded sleeve dislodgement under high vibration and impact conditions. This patent uses a pre-embedded metal threaded plate for fixing, which reduces the difficulty of the processing technology and improves the reliability and impact resistance of the threaded connection. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this application provides a split-type current detection sensor, which solves the problems mentioned in the background art.

[0008] To achieve the above objectives, this application provides the following technical solution: a split-type current detection sensor, comprising a bottom shell, an electrical area module, a half-magnetic core area module, a top cover plate, a circuit board assembly, a magnetic core structure, a wedge-shaped clamping connection device, a pre-embedded metal threaded plate, and a buffer pad;

[0009] The electrical area module and the semi-magnetic core area module are separately arranged along the length of the bottom shell, and both are detachably connected to the bottom shell by bolts. The upper cover plate covers the top of the electrical area module and the semi-magnetic core area module.

[0010] The circuit board assembly is located within the electrical area module and is fixed within the electrical area module by a wedge-shaped clamping connection device. The circuit board assembly integrates Hall effect devices and signal amplification circuits.

[0011] The magnetic core structure includes a first magnetic core segment located in the electrical area module and a second magnetic core segment located in the half-core area module. The first magnetic core segment and the second magnetic core segment are spliced ​​together, and the magnetic core structure is fixed in the corresponding module by a wedge-shaped clamping connection device. The magnetic core structure is made of a high-permeability magnetic material.

[0012] The magnetic field conducted by the magnetic core structure acts perpendicularly on the Hall element, causing the Hall element to generate a Hall potential difference, which is then processed by the signal amplification circuit to output a current detection signal.

[0013] Furthermore, the wedge-shaped clamping connection device is provided in two sets. One set corresponds to the circuit board assembly and is located in the electrical area module, and the other set corresponds to the magnetic core structure and is located in the semi-magnetic core area module. Each set of wedge-shaped clamping connection devices includes a connecting bolt.

[0014] The pre-embedded metal threaded plate is embedded in the second bottom shell of the bottom outer shell and the half magnetic core area module. The pre-embedded metal threaded plate has threaded holes corresponding to the connecting bolts. The connecting bolts pass through the wedge-shaped clamping connection device and are threadedly connected to the threaded holes.

[0015] Furthermore, the buffer pad is disposed between the magnetic core structure and the bottom outer shell, with one side of the buffer pad adhering to the bottom surface of the magnetic core structure and the other side adhering to the inner wall of the bottom outer shell.

[0016] Furthermore, the upper cover plate includes a first upper cover adapted to the electrical area module and a second upper cover adapted to the semi-magnetic core area module;

[0017] The first upper cover is fitted onto the top of the electrical area module, and the second upper cover is fitted onto the top of the semi-magnetic core area module;

[0018] The first top cover is equipped with an interface for external electronic devices.

[0019] Furthermore, the embedded metal threaded plate includes a main embedded metal threaded component and an auxiliary embedded metal component;

[0020] The main embedded metal threaded component is installed inside the bottom outer shell, and the auxiliary embedded metal component is installed inside the second bottom shell of the semi-core area module; the main embedded metal threaded component and the auxiliary embedded metal component are respectively provided with connecting bolts at their respective positions.

[0021] Furthermore, the wedge-shaped clamping connection device also includes a vertical clamping wedge and a horizontal clamping wedge;

[0022] The connecting bolt drives the vertical clamping wedge to move vertically along the inclined plane and drives the horizontal clamping wedge to move horizontally along the inclined plane, thereby positioning the corresponding parts from the vertical and horizontal directions respectively.

[0023] Furthermore, the vertical clamping wedge is provided with an elongated hole, the length direction of which is consistent with the direction of movement of the inclined surface of the vertical clamping wedge;

[0024] The connecting bolt passes through the elongated hole and connects to the pre-embedded metal threaded plate.

[0025] Furthermore, the horizontal clamping wedge is provided with an elongated hole, the length direction of which is consistent with the direction of movement of the inclined surface of the horizontal clamping wedge;

[0026] The connecting bolt passes through the elongated hole and connects to the pre-embedded metal threaded plate.

[0027] Furthermore, the first magnetic core segment and the second magnetic core segment are spliced ​​together to form a complete magnetic focusing channel.

[0028] Furthermore, the electrical area module also includes a first bottom housing, which is detachably connected to the bottom outer shell by bolts, and the circuit board assembly and the first magnetic core segment are both fixed inside the first bottom housing;

[0029] The semi-core region module also includes a second bottom housing, which is detachably connected to the bottom outer shell by bolts. The second core segment and the auxiliary embedded metal parts are all fixed inside the second bottom housing.

[0030] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0031] 1. This split-type current detection sensor features separate electrical area modules and semi-magnetic core area modules. Electrical components and wiring are concentrated in the electrical area module, eliminating wiring interference during disassembly. When adding to existing equipment, the bottom shell can be fixed first, and then the modules can be assembled without disassembling the original equipment structure. A wedge-shaped clamping connection device is used to fix the parts, eliminating the need for potting, reducing assembly steps and material costs. During later maintenance, the parts can be removed by loosening the connecting bolts, avoiding damage to the parts caused by potting.

[0032] 2. This split-type current sensor uses a pre-embedded metal threaded plate instead of the traditional direct tapping or nested threaded sleeve. This maintains the stability of the thread structure under vibration and impact environments, preventing thread damage or sleeve dislodgement. It also reduces the difficulty of housing processing and the risk of housing cracking. The high permeability of the magnetic core structure and the splicing and fixing design ensure efficient magnetic field convergence and conduction. The Hall element is precisely matched with the magnetic core structure, and combined with the signal processing circuit, it ensures a linear relationship between the Hall potential difference and the current. The buffer pad reduces the impact of vibration on the component position and reduces detection errors. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the split-type current detection sensor of this application;

[0034] Figure 2 This is a schematic diagram of the split structure of the split current detection sensor of this application;

[0035] Figure 3 This is a schematic diagram of the disassembled structure of this application;

[0036] Figure 4 This is a schematic diagram of the electrical area module structure of this application;

[0037] Figure 5 This is a schematic diagram of the semi-core region module structure of this application;

[0038] Figure 6 This is a schematic diagram of the internal cross-sectional view of the sensor structure in this application;

[0039] Figure 7 This is a schematic diagram of the wedge-shaped fastening structure of this application.

[0040] In the diagram: 1. Top cover plate; 2. Circuit board assembly; 3. Wedge-shaped clamping connection device; 4. Buffer pad; 5. Magnetic core structure; 6. Embedded metal threaded plate; 7. Bottom shell; 31. Electrical area module; 32. Semi-magnetic core area module; 41. First top cover; 42. PCB circuit board; 43. First magnetic core segment; 44. First bottom shell; 51. Second top cover; 52. Second magnetic core segment; 53. Second bottom shell; 54. First auxiliary embedded metal part; 61. Vertical clamping wedge part one; 62. Right wedge part one; 63. Main embedded metal threaded part; 64. Connecting bolt; 71. Vertical clamping wedge part two; 72. Vertical wedge fixing part; 73. Right wedge part two; 74. Third auxiliary embedded metal part; 75. Left wedge part of bottom shell; 76. Magnetic core body; 77. Second auxiliary embedded metal part; 78. Horizontal clamping wedge part. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] Please see Figure 1-7 This embodiment presents a split-type current detection sensor, which solves the problems of difficult disassembly and maintenance, complex fixing methods, and low reliability of threaded connections of traditional integrated sensors by using a split modular design, wedge-shaped clamping and fixing, and pre-embedded threaded connection.

[0043] Specifically, it includes a bottom shell 7, an electrical area module 31, a semi-magnetic core area module 32, an upper cover plate 1, a circuit board assembly 2, a magnetic core structure 5, a wedge-shaped clamping connection device 3, a pre-embedded metal threaded plate 6, and a buffer pad 4.

[0044] The bottom outer shell 7 is a rectangular shell made of high-strength insulating material, with a reserved mounting slot inside for assembling the electrical area module 31 and the semi-magnetic core area module 32. The bottom outer shell 7 is detachably connected to the two modules by bolts, ensuring that the modules are installed firmly and are easy to disassemble. At the same time, its insulation characteristics can prevent electrical interference between the current-carrying conductor and the internal components.

[0045] In detail, the electrical area module 31 and the semi-magnetic core area module 32 are separately arranged along the length of the bottom outer shell 7, forming the two major functional modules of the sensor;

[0046] The electrical area module 31 includes a first bottom housing 44, a first top cover 41, a PCB circuit board 42, and a first magnetic core segment 43. The first bottom housing 44 is detachably connected to the bottom outer shell 7 by bolts, and provides installation space for the PCB circuit board 42 and the first magnetic core segment 43 inside. The first top cover 41 covers the top of the first bottom housing 44 and is provided with an external electronic device interface, which can realize signal transmission between the PCB circuit board 42 and external devices. The PCB circuit board 42 is fixed inside the first bottom housing 44 and integrates Hall effect devices and signal amplification circuits. The Hall effect devices are used to sense magnetic fields to generate Hall potential differences, and the signal amplification circuit processes the weak potential difference into a standard output signal. The first magnetic core segment 43 is part of the magnetic core structure 5 and is fixed inside the first bottom housing 44. It is spliced ​​with the second magnetic core segment 52 of the semi-magnetic core area module 32 to form a complete magnetic channel.

[0047] More specifically, the semi-core region module 32 includes a second bottom shell 53, a second top cover 51, a second core segment 52, a first auxiliary embedded metal part 54, a second auxiliary embedded metal part 77, and a third auxiliary embedded metal part 74.

[0048] The second bottom housing 53 is detachably connected to the bottom outer housing 7 by bolts. The second magnetic core segment 52, the first auxiliary embedded metal part 54, the second auxiliary embedded metal part 77, and the third auxiliary embedded metal part 74 are fixed inside. The second top cover 51 covers the top of the second bottom housing 53 to protect the second magnetic core segment 52 inside. The second magnetic core segment 52 and the first magnetic core segment 43 are both made of high magnetic permeability magnetic material. After splicing, they form a complete magnetic core structure 5, which can efficiently conduct the magnetic field generated by the current-carrying conductor. The first auxiliary embedded metal part 54, the second auxiliary embedded metal part 77, and the third auxiliary embedded metal part 74 are embedded in the second bottom housing 53 to provide a threaded connection base for the connecting bolt 64 of the wedge-shaped clamping connection device 3.

[0049] In addition, the upper cover 1 includes a first upper cover 41 and a second upper cover 51, which are respectively adapted to the electrical area module 31 and the semi-magnetic core area module 32. The first upper cover 41 and the second upper cover 51 are fixed to the corresponding bottom shell by bolts. After the cover is closed, it can protect the internal components from external environmental interference such as dust and moisture, and extend the service life of the sensor. The external electronic device interface of the first upper cover 41 provides a transmission channel for the detection signal output by the PCB circuit board 42, which is convenient for docking with external data acquisition equipment.

[0050] Furthermore, the PCB circuit board 42, as the electrical core of the sensor, integrates Hall effect devices that correspond to the magnetic core structure 5. It can receive the magnetic field signal conducted by the magnetic core structure 5. The signal amplification circuit is electrically connected to the Hall effect devices, which can amplify and filter the weak Hall potential difference generated by the Hall effect devices and convert it into a standard analog output signal to realize the digital reading of current parameters. The PCB circuit board 42 is fixed in the electrical area module 31 by the wedge clamping connection device 3 to ensure its positional stability under vibration and impact environments, and to avoid displacement of the relative position of the Hall effect devices and the magnetic core structure 5, which would affect the detection accuracy.

[0051] Furthermore, the magnetic core structure 5 is composed of a first magnetic core segment 43 and a second magnetic core segment 52, forming an overall ring or U-shaped structure. The high permeability of the material enables it to efficiently concentrate the magnetic field around the current-carrying conductor, reducing magnetic field diffusion loss. The magnetic field conducted by the magnetic core structure 5 acts perpendicularly on the Hall element on the PCB circuit board 42, providing a stable and uniform magnetic field environment for the Hall element and ensuring a linear relationship between the Hall potential difference and the current magnitude. The magnetic core structure 5 is fixed in the corresponding module by a wedge-shaped clamping connection device 3 to prevent it from loosening or shifting during use, ensuring a stable magnetic concentration effect.

[0052] In actual setup, the wedge-shaped clamping connection device 3 has two sets, corresponding to the PCB circuit board 42 and the magnetic core structure 5 respectively. Each set includes a connecting bolt 64, a vertical clamping wedge 1 61 and a vertical clamping wedge 2 71, and a horizontal clamping wedge 78. The connecting bolt 64 is a driving component that passes through the wedge and connects to the threaded hole of the pre-embedded metal threaded plate 6. The vertical clamping wedge 1 61 and the vertical clamping wedge 2 71 are provided with elongated holes, the length direction of which moves along the inclined surface of the wedge. With the direction consistent, the connecting bolt 64 can compensate for the movement displacement of the wedge when it passes through the elongated hole. The horizontal clamping wedge 78 also has an elongated hole, which has the same function as the elongated hole of the vertical clamping wedge 61. When the connecting bolt 64 is tightened, the vertical clamping wedge 61 and the vertical clamping wedge 71 move vertically along the inclined plane, and the horizontal clamping wedge 78 moves horizontally along the inclined plane. The PCB circuit board 42 or the magnetic core structure 5 are positioned from the vertical and horizontal directions respectively, so as to achieve reliable fixation.

[0053] Furthermore, the embedded metal threaded plate 6 includes a main embedded metal threaded component 63 and a first auxiliary embedded metal component 54, a second auxiliary embedded metal component 77 and a third auxiliary embedded metal component 74.

[0054] The main embedded metal threaded component 63 is installed inside the bottom shell 7, corresponding to the wedge-shaped clamping connection device 3 of the electrical area module 31. The first auxiliary embedded metal component 54, the second auxiliary embedded metal component 77, and the third auxiliary embedded metal component 74 are installed inside the second bottom shell 53 of the semi-magnetic core area module 32, corresponding to the wedge-shaped clamping connection device 3 of the semi-magnetic core area module 32. The embedded metal threaded plate 6 is made of high-strength metal material and has threaded holes on its surface that are compatible with the connecting bolt 64. This allows the tightening force of the connecting bolt 64 to be evenly transmitted to the bottom shell 7 or the second bottom shell 53, avoiding the problems of thread damage and thread sleeve dislodgement under vibration and impact when directly tapping or nesting the threaded sleeve.

[0055] Furthermore, the buffer pad 4 is located between the magnetic core structure 5 and the bottom outer shell 7, with one side attached to the bottom surface of the magnetic core structure 5 and the other side attached to the inner wall of the bottom outer shell 7. The buffer pad 4 is made of elastic insulating material, which can absorb vibration energy and reduce the impact of external vibration on the magnetic core structure 5.

[0056] It should be noted that when the connecting bolt 64 is tightened, the inclined surfaces of the vertical clamping wedge 61 and the right wedge 62 will interact. The vertical clamping wedge 61 moves obliquely downward along this inclined surface, and this movement directly applies vertical pressure to the magnetic core, thereby achieving vertical clamping and fixation of the magnetic core. The main embedded metal threaded component 63, which forms a threaded engagement with the connecting bolt 64, adopts an embedded metal structure design. This structure can stably transfer the load generated when the connecting bolt 64 is tightened to the right wedge 62, avoiding load concentration that could lead to local structural damage, thereby improving the reliability and stability of the bolt connection.

[0057] Furthermore, the bolt holes on the vertical clamping wedge 61 are designed as elongated holes. These elongated holes provide horizontal displacement compensation space for the vertical clamping wedge 61 as it moves along the inclined plane, preventing the connecting bolt 64 from getting stuck due to the horizontal displacement of the vertical clamping wedge 61. This ensures that the vertical clamping wedge 61 can move smoothly to complete the clamping of the magnetic core. Other methods of fixing the magnetic core in the vertical direction are similar to the principle of clamping achieved by the cooperation of the vertical clamping wedge 61, the connecting bolt 64, the main pre-embedded metal threaded part 63, and the right wedge part 62. They all rely on the synergistic effect of the wedge structure and the bolt drive to ensure the fixing effect.

[0058] When fixing the magnetic core body 76, firstly, the second auxiliary embedded metal part 77 and the third auxiliary embedded metal part 74 with threaded holes are placed into the mounting groove; then the magnetic core body 76 and the buffer pad 4 are placed in; then the vertical clamping wedge 71, the vertical wedge fixing part 72 and the horizontal clamping wedge 78 are placed in; then the bolts pass through the vertical wedge fixing part 72, the wedge part 75 on the left side of the bottom housing and the horizontal clamping wedge 78 and are connected to the second auxiliary embedded metal part 77. The vertical wedge fixing part 72 and the wedge part 75 on the left side of the bottom housing have bolt through holes, and the horizontal clamping wedge 78 has an elongated hole.

[0059] As the bolts are tightened, the horizontal clamping wedge 78 can move along the inclined plane, thereby clamping the magnetic core body 76 in the horizontal direction, so that it is in close contact with the end face of the right wedge part 73. The vertical clamping wedge 71 is threadedly connected to the third auxiliary embedded metal part 74 by bolts. When the bolts are tightened, the vertical clamping wedge 71 will move obliquely downward along the wedge face of the vertical wedge fixing part 72 and the right wedge part 73, thereby clamping the magnetic core body 76 in the vertical direction.

[0060] The working principle of the above embodiments is as follows:

[0061] (1) Based on the location of the current-carrying conductor to be detected, fix the bottom shell 7 in a suitable position on the equipment. Connect the electrical area module 31 and the semi-magnetic core area module 32 along the length of the bottom shell 7, ensuring a seamless fit between the first magnetic core segment 43 and the second magnetic core segment 52 to form a complete magnetic core structure 5. Secure the two modules to the bottom shell 7 with bolts, ensuring no looseness. Close the first upper cover 41 and the second upper cover 51 to complete the sensor assembly. Pass the current-carrying conductor through the annular or U-shaped channel formed by the magnetic core structure 5, ensuring no direct contact between the conductor and the magnetic core structure 5 to avoid electrical interference. When there is current in the conductor... When current flows, according to the principle of electromagnetism, a magnetic field proportional to the magnitude of the current is generated around the conductor. The high permeability of the magnetic core structure 5 concentrates the dispersed magnetic field. Through the magnetic channel formed by splicing the first magnetic core segment 43 and the second magnetic core segment 52, the magnetic field is efficiently conducted to the Hall element on the PCB circuit board 42. The magnetic field acts perpendicularly on the Hall element. At this time, under the combined action of the magnetic field and its own operating current, the Hall element generates a Hall potential difference proportional to the magnetic field strength according to Hall's law. Since the magnetic field strength is proportional to the magnitude of the current in the current-carrying conductor, the Hall potential difference indirectly reflects the magnitude of the current.

[0062] (2) The signal amplification circuit on the PCB circuit board 42 receives the weak Hall potential difference generated by the Hall element. Through amplification, filtering, linear compensation and other processing, it is converted into a standard analog output signal. The output signal is transmitted to the external data acquisition device through the external electronic device interface of the first upper cover 41. The external device analyzes the signal and can obtain the current parameters of the current-carrying conductor in real time to realize the current detection function. When the sensor needs to be maintained, such as replacing the PCB circuit board 42 or repairing the magnetic core structure 5, first disconnect the connection between the external device and the external electronic device interface, remove the first upper cover 41 and the second upper cover 51, loosen the bolts connecting the bottom shell 7 and the two modules, and separate the electrical area module 31 and the half magnetic core area module 32 along the length direction. During the separation process, the circuit of the electrical area module 31 is concentrated, and the half magnetic core area module 32 has no circuit, so there will be no circuit interference. Operate on the part that needs to be maintained. After maintenance, reassemble the two modules, fix the bolts and close the upper cover 1 to restore the sensor to working state.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0064] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split-type current detection sensor, characterized in that: Includes a bottom shell (7), an electrical area module (31), a semi-magnetic core area module (32), a top cover (1), a circuit board assembly (2), a magnetic core structure (5), a wedge-shaped clamping connection device (3), a pre-embedded metal threaded plate (6), and a buffer pad (4); The electrical area module (31) and the semi-magnetic core area module (32) are separately arranged along the length of the bottom shell (7), and both are detachably connected to the bottom shell (7) by bolts. The upper cover plate (1) covers the top of the electrical area module (31) and the semi-magnetic core area module (32). The circuit board assembly (2) is located in the electrical area module (31), and the circuit board assembly (2) is fixed in the electrical area module (31) by a wedge-shaped clamping connection device (3). Hall effect devices and signal amplification circuits are integrated on the circuit board assembly (2). The magnetic core structure (5) includes a first magnetic core segment (43) located in the electrical area module (31) and a second magnetic core segment (52) located in the half magnetic core area module (32). The first magnetic core segment (43) and the second magnetic core segment (52) are spliced ​​together, and the magnetic core structure (5) is fixed in the corresponding module by a wedge-shaped clamping connection device (3). The magnetic core structure (5) is made of a high permeability magnetic material. The magnetic field conducted by the magnetic core structure (5) acts perpendicularly on the Hall element, causing the Hall element to generate a Hall potential difference, which is then processed by the signal amplification circuit to output a current detection signal. The wedge-shaped clamping connection device (3) is provided in two sets. One set corresponds to the circuit board assembly (2) and is located in the electrical area module (31). The other set corresponds to the magnetic core structure (5) and is located in the semi-magnetic core area module (32). Each set of wedge-shaped clamping connection device (3) includes a connecting bolt (64). The pre-embedded metal threaded plate (6) is embedded in the second bottom shell (53) of the bottom shell (7) and the half magnetic core area module (32). The pre-embedded metal threaded plate (6) has a threaded hole corresponding to the connecting bolt (64). The connecting bolt (64) passes through the wedge-shaped clamping connection device (3) and is threadedly connected to the threaded hole.

2. The split-type current detection sensor according to claim 1, characterized in that: The buffer pad (4) is located between the magnetic core structure (5) and the bottom shell (7). One side of the buffer pad (4) is attached to the bottom surface of the magnetic core structure (5), and the other side is attached to the inner wall of the bottom shell (7).

3. A split-type current detection sensor according to claim 1, characterized in that: The upper cover (1) includes a first upper cover (41) adapted to the electrical area module (31) and a second upper cover (51) adapted to the half-core area module (32). The first top cover (41) covers the top of the electrical area module (31), and the second top cover (51) covers the top of the semi-magnetic core area module (32); The first top cover (41) is provided with an interface for external electronic devices.

4. A split-type current detection sensor according to claim 1, characterized in that: The embedded metal threaded plate (6) includes a main embedded metal threaded component (63), a first auxiliary embedded metal component (54), a second auxiliary embedded metal component (77), and a third auxiliary embedded metal component (74). The main embedded metal threaded part (63) is installed in the bottom shell (7), and the first auxiliary embedded metal part (54) is installed in the second bottom shell (53) of the semi-magnetic core area module (32); the main embedded metal threaded part (63) and the first auxiliary embedded metal part (54) are respectively set with the connecting bolt (64) at their respective positions.

5. A split-type current detection sensor according to claim 1, characterized in that: The wedge-shaped clamping connection device (3) further includes a vertical clamping wedge one (61), a vertical clamping wedge two (71), and a horizontal clamping wedge (78). The connecting bolt (64) drives the vertical clamping wedge (61) to move vertically along the inclined plane and drives the horizontal clamping wedge (78) to move horizontally along the inclined plane, thereby positioning the corresponding parts from the vertical and horizontal directions respectively.

6. A split-type current detection sensor according to claim 5, characterized in that: The vertical clamping wedge one (61) and the vertical clamping wedge two (71) are provided with elongated holes, and the length direction of the elongated holes is consistent with the inclined surface movement direction of the vertical clamping wedge one (61) and the vertical clamping wedge two (71); The connecting bolt (64) passes through the elongated hole and is connected to the pre-embedded metal threaded plate (6).

7. A split-type current detection sensor according to claim 5, characterized in that: The horizontal clamping wedge (78) is provided with an elongated hole, the length direction of which is consistent with the direction of movement of the inclined surface of the horizontal clamping wedge (78); The connecting bolt (64) passes through the elongated hole and is connected to the pre-embedded metal threaded plate (6).

8. A split-type current detection sensor according to claim 1, characterized in that: The first magnetic core segment (43) and the second magnetic core segment (52) are spliced ​​together to form a complete magnetic channel.

9. A split-type current detection sensor according to claim 8, characterized in that: The electrical area module (31) also includes a first bottom housing (44), which is detachably connected to the bottom outer shell (7) by bolts. The circuit board assembly (2) and the first magnetic core segment (43) are both fixed inside the first bottom housing (44). The semi-core region module (32) also includes a second bottom housing (53), which is detachably connected to the bottom outer shell (7) by bolts. The second core segment (52), the first auxiliary embedded metal part (54), the second auxiliary embedded metal part (77) and the third auxiliary embedded metal part (74) are all fixed inside the second bottom housing (53).

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