Current detection device

Abstract

The utility model relates to a current detection device. The current detection device comprises a shell, a detection conductor, a mounting rack and a probe, the detection conductor passes through the housing. The installation frame is installed in the shell and located on the shell, the installation frame is provided with a first locating groove, an avoiding hole is formed in the middle of the bottom wall of the first locating groove, and the detection conductor is further arranged in the avoiding hole in a penetrating mode. The probe is arranged in the first positioning groove and abuts against the inner wall of the first positioning groove for positioning. According to the current detection device, the mounting frame is positioned in the shell, the first positioning groove is formed in the mounting frame, and the probe is arranged in the first positioning groove and is abutted against the inner wall of the first positioning groove for positioning. Therefore, the probe can be positioned and arranged in the shell, so that the centering degree of the probe is improved, the current detection precision is improved, the dynamic response is not limited, and the temperature stability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of current detection, in particular to a current detection device. BACKGROUND

[0002] With the continuous development of power supply technology, the application of current detection devices in power supply design is also more and more widely. The current detection device, including but not limited to current transformer or current sensor, etc., can sense the information of the measured current, and can transform the sensed information into an electrical signal or other required form of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control, etc.

[0003] The current detection device in the related art includes a shell and a probe. The probe is arranged in the interior of the shell. The probe includes but is not limited to a magnetic core and a coil, etc. The shell is also provided with a through hole arranged along the central axis of the probe, and the through hole penetrates through the opposite two axial end faces of the shell. In detection, a detection conductor is inserted into the through hole, and the detection conductor is electrically connected with a detection object. When the current flows on the detection conductor, the magnetic field of the probe will change, and then an induced current will be generated on the coil, and the size of the current on the detection conductor can be obtained according to the induced current. However, the position of the probe in the shell in the related art is prone to deviation, so that the probe is not centered, that is, the central axis of the probe does not coincide with the detection conductor, which may cause problems such as decline of measurement accuracy, limited dynamic response, and temperature stability, etc. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to overcome the defects of the prior art, and to provide a current detection device which can improve the centering degree of the probe, thereby improving the current detection accuracy, the dynamic response is not limited, and the temperature stability is improved.

[0005] A current detection device, comprising:

[0006] a shell;

[0007] a detection conductor, the detection conductor penetrating through the shell;

[0008] a mounting frame, the mounting frame being arranged in the interior of the shell, and the mounting frame being positioned on the shell, the mounting frame being provided with a first positioning groove, a middle part of a bottom wall of the first positioning groove being formed with a avoiding hole, and the detection conductor also penetrating through the avoiding hole; and

[0009] a probe, the probe being arranged in the interior of the first positioning groove and being positioned by abutting against the inner wall of the first positioning groove.

[0010] In one of the embodiments, the inner wall of the shell is provided with a first positioning member, the first positioning member is arranged in the avoiding hole, the first positioning member is also arranged in the probe, and the outer wall of the first positioning member is in abutting position with the inner wall of the probe.

[0011] In one of the embodiments, the shell is provided with a second positioning member, the second positioning member is provided with a first wire hole, and the detection conductor is arranged in the first wire hole; the first positioning member is provided with a through hole in communication with the outside of the shell, and the second positioning member is arranged in the through hole.

[0012] In one of the embodiments, the shell comprises a main body shell and a cover, the main body shell is formed with an opening, the cover is connected with the main body shell and covers the opening; the mounting frame is arranged in the interior of the main body shell, and the mounting frame is positioned on the main body shell; the first positioning member is connected with the main body shell, and the second positioning member is connected with the cover.

[0013] In one of the embodiments, the first positioning member is integrally injection molded with the main body shell; and / or, the second positioning member is integrally injection molded with the cover.

[0014] In one of the embodiments, the detection conductor is one, the second positioning member is one, the detection conductor comprises an intermediate segment arranged in the probe, and the central axis of the intermediate segment coincides with the central axis of the probe; or,

[0015] The detection conductor is multiple, the second positioning member is multiple, multiple second positioning members are arranged in the through hole, each second positioning member is arranged corresponding to each detection conductor, the detection conductor comprises an intermediate segment arranged in the second positioning member, multiple intermediate segments are rotationally symmetrical, and the rotational symmetry axis of multiple intermediate segments coincides with the central axis of the probe.

[0016] In one of the embodiments, multiple second positioning members are arranged in the through hole of the first positioning member, and opposite ends of multiple second positioning members respectively extend to the outside of the shell.

[0017] In one of the embodiments, the current detection device further comprises a positioning frame; the positioning frame is connected with the shell; the positioning frame is provided with multiple positioning portions; the detection conductor further comprises two connecting segments, and the two connecting segments are respectively connected to opposite ends of the intermediate segment; and multiple connecting segments are one-to-one corresponding positioned on multiple positioning portions.

[0018] In one of the embodiments, the positioning frame is provided with a second positioning slot, and the side of the shell is arranged into the second positioning slot; the positioning frame is provided with a first clamping part, and the shell is provided with a second clamping part, and the first clamping part and the second clamping part are clamped and matched with each other.

[0019] In one of the embodiments, the main body shell is provided with a plurality of third clamping parts, and the cover is provided with a plurality of fourth clamping parts, and the plurality of fourth clamping parts and the plurality of third clamping parts are one-to-one correspondingly clamped and matched.

[0020] In one of the embodiments, the probe includes a magnetic core and a coil; the magnetic core and the coil are arranged inside the first positioning slot, and the coil is wound and arranged on the magnetic core;

[0021] The current detection device further includes a detection circuit board and a plurality of pins, the mounting frame is further provided with a plurality of second wiring holes, and the plurality of pins are one-to-one correspondingly arranged in the plurality of second wiring holes; one end of the pin is correspondingly electrically connected with the end of the coil, and the other end of the pin is electrically connected with the detection circuit board.

[0022] In one of the embodiments, the main body shell is provided with a support part and a fifth clamping part; the support part supports the detection circuit board, and the fifth clamping part is clamped on the side of the detection circuit board away from the support part.

[0023] The current detection device has the mounting frame arranged inside the shell, the mounting frame is provided with the first positioning slot, and the probe is arranged inside the first positioning slot and abuts against the inner wall of the first positioning slot. Therefore, the probe can be arranged inside the shell, the centering degree of the probe is improved, the current detection precision is improved, the dynamic response is not limited, and the temperature stability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective structural view of the current detection device of one embodiment of the application.

[0025] Figure 2 It is a perspective structural view of the structure shown in the figure. Figure 1 It is another perspective structural view of the structure shown in the figure.

[0026] Figure 3 It is a structural view of the structure shown in the figure without the cover, the positioning frame and the detection conductor. Figure 1 It is a structural view of the structure shown in the figure without the detection circuit board.

[0027] Figure 4 It is a structural view of the structure shown in the figure without the detection circuit board. Figure 3

[0028] Figure 5 Figure 4 ​​An exploded view of the structure shown with the main body shell removed.

[0029] Figure 6 As shown in the structure shown with the main body shell removed. Figure 4 An exploded view of the structure shown with the main body shell removed.

[0030] Figure 7 As shown in the structure shown with the main body shell removed. Figure 1 An exploded view of the structure shown with the main body shell removed.

[0031] Figure 8 An exploded view of the structure shown with the main body shell removed.

[0032] Figure 9 As shown in the structure shown with the main body shell removed. Figure 7 An exploded view of the structure shown with the main body shell removed.

[0033] Figure 10 An exploded view of the structure shown with the main body shell removed.

[0034] 10, housing; 11, main body shell; 111, first positioning member; 1111, through hole; 112, third clamping portion; 113, third positioning member; 114, support portion; 115, fifth clamping portion; 12, cover; 121, second positioning member; 1211, first wiring hole; 122, fourth clamping portion; 123, window; 13, second clamping portion; 20, detection conductor; 21, intermediate section; 22, connecting section; 30, mounting bracket; 31, first positioning groove; 311, avoiding hole; 32, positioning opening; 33, second wiring hole; 40, probe; 41, magnetic core; 42, coil; 421, end portion; 50, positioning bracket; 51, positioning portion; 511, positioning hole; 52, second positioning groove; 53, first clamping portion; 60, detection circuit board; 61, connecting terminal; 70, pin. DETAILED DESCRIPTION

[0035] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated that the present application not be limited to the embodiments set forth in the following description.

[0036] As described in the background, when the probe of the current detection device in the prior art is not centered, it can cause the measurement accuracy to decrease, the dynamic response to be limited, and the temperature stability to be problematic.

[0037] Specifically, the magnetic flux gate sensor is taken as an example for detailed introduction. The magnetic flux gate sensor is a current detection device that measures by using the magnetic flux gate effect. Its working principle is based on the change of the magnetization state of the magnetic core in the alternating magnetic field. When the probe of the magnetic flux gate sensor is not centered, the following problems may be encountered:

[0038] ‌Measurement accuracy decreases‌: The off-centering of the probe may cause the magnetic flux gate sensor to inaccurately perceive the magnetic field, affecting the accuracy of the measurement. This is because the measurement principle of the magnetic flux gate sensor relies on the change of the magnetic field. If the probe position is not accurate, the change of the magnetic field cannot be accurately captured, resulting in measurement error.

[0039] ‌Dynamic response is limited‌: The off-centering of the probe may also affect the dynamic response capability of the magnetic flux gate sensor. In a rapidly changing magnetic field environment, if the probe position is incorrect, the magnetic flux gate sensor may not respond to the change of the magnetic field in time, resulting in a decrease in dynamic response performance.

[0040] ‌Temperature stability problem‌: The off-centering of the probe may also affect the temperature stability of the magnetic flux gate sensor. The working principle of the magnetic flux gate sensor involves the change of the magnetization state of the material, which may be affected by temperature. If the probe is not centered, the performance of the magnetic flux gate sensor at different temperatures may not be consistent, affecting its temperature stability.

[0041] Based on the above reasons, the application provides a current detection device that can improve the centering degree of the probe, thereby improving the current detection accuracy, dynamic response, and temperature stability.

[0042] Referring to Figures 1 to 3 , Figure 1 shows a perspective view of the current detection device according to an embodiment of the application. Figure 2 shows Figure 1 another perspective view of the structure shown. Figure 3 shows Figure 1 a structure diagram after removing the cover 12, the positioning frame 50, and the detection conductor 20 in the structure shown. The current detection device provided by an embodiment of the application includes a housing 10, a detection conductor 20, a mounting frame 30, and a probe 40. The detection conductor 20 penetrates the housing 10. The mounting frame 30 is arranged inside the housing 10, and the mounting frame 30 is positioned on the housing 10. The mounting frame 30 is provided with a first positioning groove 31. The middle part of the bottom wall of the first positioning groove 31 is formed with a clearance hole 311. The detection conductor 20 also penetrates the clearance hole 311. The probe 40 is arranged inside the first positioning groove 31 and is positioned against the inner wall of the first positioning groove 31.

[0043] Specifically, the outer contour shape of the probe 40 matches the first positioning groove 31. For example, when the outer contour of the probe 40 is circular, the first positioning groove 31 is correspondingly provided as a circular first positioning groove 31; when the outer contour of the probe 40 is square, the first positioning groove 31 is correspondingly provided as a square first positioning groove 31.

[0044] Since the detection conductor 20 is inserted through the shell 10 and the avoidance hole 311, the detection conductor 20 is simultaneously inserted through the probe 40. After the detection conductor 20 is electrically connected to the external device and passes through the current, it can be inducted by the probe 40, thereby playing a detection role.

[0045] The current detection device described above is provided with the mounting frame 30 inside the shell 10, the mounting frame 30 is provided with the first positioning groove 31, and the probe 40 is mounted inside the first positioning groove 31 and abuts against the inner wall of the first positioning groove 31. Thus, it can be seen that the probe 40 can be positioned and mounted inside the shell 10, so that the centralization degree of the probe 40 is improved, thereby improving the current detection precision, the dynamic response is not limited, and the temperature stability is improved.

[0046] Please refer to Figure 3 and Figure 4 In one embodiment, the inner wall of the shell 10 is provided with a first positioning member 111. The first positioning member 111 includes but is not limited to a positioning tube. The first positioning member 111 is inserted through the avoidance hole 311 and the probe 40, and the outer wall of the first positioning member 111 abuts against the inner wall of the probe 40. Thus, when the probe 40 is mounted inside the first positioning groove 31 and abuts against the inner wall of the first positioning groove 31, the inner wall of the probe 40 also abuts against the first positioning member 111, thereby realizing the double positioning of the inner and outer walls of the probe 40, improving the positioning precision, effectively preventing the position deviation of the probe 40 on the mounting frame 30, and improving the centralization degree of the probe 40.

[0047] In addition, the first positioning member 111 can also play a protection role, and can separate the detection conductor 20 and the probe 40 from each other. Thus, the detection conductor 20 will not contact the inner wall of the probe 40 during the process of being inserted into the probe 40, and therefore will not cause damage to the probe 40. When the probe 40 includes the magnetic core 41 and the coil 42 wound on the magnetic core 41, the coil 42 can be prevented from being abraded.

[0048] In one embodiment, the second positioning member 121 is arranged on the shell 10. The second positioning member 121 includes, but is not limited to, a positioning tube. The second positioning member 121 is provided with a first wire hole 1211, and the detection conductor 20 is arranged in the first wire hole 1211. The first positioning member 111 is provided with a through hole 1111 in communication with the outside of the shell 10, and the second positioning member 121 is arranged in the through hole 1111. In this way, since the second positioning member 121 is fixedly arranged on the shell 10, when the detection conductor 20 is arranged in the first wire hole 1211, the second positioning member 121 plays a positioning role on the detection conductor 20, so as to effectively prevent the detection conductor 20 from being deviated on the shell 10, and thus the centering degree of the probe 40 can be improved.

[0049] Please refer to Figure 1 , Figure 3 and Figure 10 In one embodiment, the shell 10 includes a main body shell 11 and a cover 12. The main body shell 11 is formed with an opening, and the cover 12 is connected with the main body shell 11 and covers the opening. The mounting bracket 30 is arranged in the interior of the main body shell 11, and the mounting bracket 30 is positioned on the main body shell 11. The first positioning member 111 is connected with the main body shell 11, and the second positioning member 121 is connected with the cover 12.

[0050] In some embodiments, the first positioning member 111 is integrally injection molded with the main body shell 11. In this way, compared with the mode that the first positioning member 111 is connected with the main body shell 11 by using fasteners such as pins, screws, rivets or clamping blocks, the mode of integrally injection molding makes the first positioning member 111 arranged on the main body shell 11, so as to make the arrangement position of the first positioning member 111 on the main body shell 11 more accurate, and thus the centering degree of the probe 40 can be improved.

[0051] In some embodiments, the second positioning member 121 is integrally injection molded with the cover 12. In this way, compared with the mode that the second positioning member 121 is connected with the cover 12 by using fasteners such as pins, screws, rivets or clamping blocks, the mode of integrally injection molding makes the second positioning member 121 arranged on the cover 12, so as to reduce the assembly error, and thus the arrangement position of the second positioning member 121 on the cover 12 is more accurate, and thus the centering degree of the probe 40 can be improved.

[0052] The opposite ends of the detection conductor 20 are electrically connected with the circuit to be detected, for example.

[0053] It should be noted that the number of the detection conductor 20 is one or more, for example, and the number can be 2, 3, 4, 5, 6 or more, which can be flexibly adjusted and arranged according to actual needs, and is not limited herein.

[0054] When the detection conductor 20 is one, the current detection device is specifically a current transformer or a current sensor. For the current transformer, since the current on the detection conductor 20 is changing, a changing magnetic field can be induced on the magnetic core 41. Since the coil 42 is wound on the magnetic core 41, the changing magnetic field on the magnetic core 41 can generate an induced current on the coil 42. The induced current on the coil 42 is led to the outside, and the alternating current on the detection conductor 20 is inferred according to the induced current.

[0055] When the detection conductor 20 is multiple, the current detection device is specifically a current sensor, and the working of the measured object is determined according to the current difference between the two detection conductors 20.

[0056] In one embodiment, the detection conductor 20 is four, and the four detection conductors 20 are respectively connected to the ground wire, the live wire, the neutral wire and the neutral wire. In this way, the current detection device can be used to measure whether there is leakage in the three-phase four-wire connection. Of course, if the three-phase three-wire connection is measured, the number of detection conductors 20 is adjusted to three.

[0057] In one embodiment, the detection conductor 20 is one, and the second positioning member 121 is one. The detection conductor 20 includes the middle section 21 penetrating the probe 40, and the central axis of the middle section 21 coincides with the central axis of the probe 40.

[0058] In another embodiment, the detection conductor 20 is multiple, and the second positioning member 121 is multiple. The multiple second positioning members 121 penetrate the through hole 1111, and each second positioning member 121 is correspondingly arranged with each detection conductor 20. The detection conductor 20 includes the middle section 21 penetrating the second positioning member 121. Specifically, the multiple middle sections 21 are rotationally symmetrical, and the rotational symmetry axis of the multiple middle sections 21 coincides with the central axis of the probe 40. The probe 40 includes the magnetic core 41, and the central axis of the probe 40 is specifically the central axis of the magnetic core 41.

[0059] In some embodiments, the multiple second positioning members 121 penetrate the through hole 1111 of the first positioning member 111, and the opposite ends of the multiple second positioning members 121 respectively extend to the outside of the shell 10. Specifically, one end of the second positioning member 121 is located on the side of the cover 12 away from the main body shell 11, and the other end of the second positioning member 121 is located on the side of the main body shell 11 away from the cover 12. In this way, the detection conductor 20 can penetrate the shell 10, and the second positioning member 121 has a good positioning effect on the middle section 21 of the detection conductor 20, thereby improving the centering degree of the probe 40.

[0060] Optionally, the multiple second positioning members 121 are connected with each other to form an integral whole.

[0061] Please refer to Figure 1 , Figure 2 and Figure 7 , wherein the first wire hole 1211 of the second positioning member 121 is a straight hole, and the middle section 21 is a straight section. The detection conductor 20 further comprises two connecting sections 22. The two connecting sections 22 are respectively connected to the opposite ends of the middle section 21. Optionally, the middle section 21 and the two connecting sections 22 are provided as an integrated structure. The connecting section 22 refers to the part of the detection conductor 20 extending out of the second positioning member 121. In the embodiment, the two connecting sections 22 are arranged perpendicularly to the middle section 21, so that the two connecting sections 22 can be conveniently assembled with the circuit board to be detected.

[0062] In the actual assembly process, the detection conductor 20 is straight before being assembled into the second positioning member 121. After being assembled into the first wire hole 1211, the opposite ends of the detection conductor 20 are bent, so that the straight detection conductor 20 becomes a bent shape, thereby enabling the detection conductor 20 to form the middle section 21 and the two connecting sections 22 connected to the opposite ends of the middle section 21.

[0063] Please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 . In an embodiment, the current detection device further comprises a positioning frame 50. The positioning frame 50 is connected to the shell 10. The positioning frame 50 is provided with a plurality of positioning portions 51. The detection conductor 20 further comprises two connecting sections 22, which are respectively connected to the opposite ends of the middle section 21. The plurality of connecting sections 22 are positioned on the plurality of positioning portions 51 one by one. In this way, the plurality of connecting sections 22 are positioned by the positioning frame 50, and the overall structural arrangement is relatively regular, which can facilitate assembly with the circuit board to be detected. In addition, the positioning frame 50 can play a positioning role on the detection conductor, thereby improving the centering degree.

[0064] In the embodiment, the positioning portion 51 is provided with a positioning hole 511, and the connecting section 22 is arranged in the positioning hole 511 to achieve positioning. Specifically, the connecting section 22 and the positioning hole 511 can be in an interference fit relationship or a clamping relationship, so that the connecting section 22 can be stably arranged on the positioning frame 50.

[0065] Of course, the positioning portion 51 is not limited to the positioning hole 511 in the above embodiment, but can be, for example, provided as a clamping portion, so as to realize the fixation of the connecting section 22 on the positioning frame 50 by clamping.

[0066] Please refer to Figure 1 , Figure 2 and Figure 7In some embodiments, the connection segments 22 are parallel to each other, and the end faces of the connection segments 22 are in the same plane or substantially in the same plane. In this way, the connection segments 22 can be conveniently assembled to the same circuit board to be tested.

[0067] In some embodiments, the positioning frame 50 is fixedly arranged on the shell 10 by means of clamping, welding, bonding, pins, rivets, screws or other fasteners, and can be flexibly adjusted and arranged according to actual needs, which is not limited herein.

[0068] Please refer to Figure 1 , Figure 7 and Figure 8 In one embodiment, the positioning frame 50 is provided with a second positioning groove 52, and the side of the shell 10 is arranged in the second positioning groove 52. The positioning frame 50 is provided with a first clamping portion 53, and the shell 10 is provided with a second clamping portion 13. The first clamping portion 53 and the second clamping portion 13 are clamped and matched with each other. In this way, during the assembly of the positioning frame 50 to the shell 10, the connection segments 22 are aligned and assembled with the positioning portions 51, the side of the shell 10 is arranged in the second positioning groove 52, and the first clamping portion 53 and the second clamping portion 13 are clamped with each other, so that the positioning frame 50 can be conveniently fixedly arranged on the shell 10, and the assembly efficiency is high.

[0069] On the basis of the foregoing embodiments, the first clamping portion 53 and the second clamping portion 13 are not limited to one, and the cover 12 and the main shell 11 are respectively provided with at least one second clamping portion 13, and the positioning frame 50 is provided with a first clamping portion 53 corresponding to the second clamping portion 13. Each first clamping portion 53 and each second clamping portion 13 are correspondingly clamped and matched. In this way, the mounting stability of the positioning frame 50 on the shell 10 can be improved.

[0070] Among them, a plurality of first clamping portions 53 are symmetrically arranged on the positioning frame 50. The first clamping portion 53 includes but is not limited to a bayonet, a buckle or a claw. In addition, a plurality of second clamping portions 13 are symmetrically arranged on the two end faces of the shell 10. The second clamping portion 13 includes but is not limited to a clamping rib, a buckle or a claw.

[0071] In some embodiments, the cover 12 is fixedly arranged on the main shell 11 by means of clamping, welding, bonding, pins, rivets, screws or other fasteners, and can be flexibly adjusted and arranged according to actual needs, which is not limited herein. In order to realize the quick disassembly of the cover 12 and the main shell 11, the cover 12 is arranged on the main shell 11 by means of clamping. When the cover 12 is arranged on the main shell 11, the cover 12 covers the opening and the main shell 11 is assembled to form a complete shell, which protects various parts such as the probe 40 arranged inside the shell 10.

[0072] In one embodiment, the main body shell 11 is provided with a plurality of third clamping portions 112, and the cover body 12 is provided with a plurality of fourth clamping portions 122. The plurality of fourth clamping portions 122 correspondingly clamp the plurality of third clamping portions 112. In this way, the cover body 12 is stably installed on the main body shell 11 under the action of the corresponding clamping of each fourth clamping portion 122 and each third clamping portion 112.

[0073] Of course, as some optional solutions, the third clamping portion 112 and the fourth clamping portion 122 are both, for example, one.

[0074] Among them, the third clamping portion 112 is arranged on the outer wall of the main body shell 11, and the fourth clamping portion 122 is arranged on the inner wall of the cover body 12, and the cover body 12 is installed on the main body shell 11 while realizing the mutual clamping with the main body shell 11. The third clamping portion 112 is, for example, a clamping groove, and the fourth clamping portion 122 is a clamping buckle or a clamping hook matched with the clamping groove. Of course, the fourth clamping portion 122 can also be arranged as a clamping groove, and the third clamping portion 112 is a clamping buckle or a clamping hook matched with the clamping groove.

[0075] In some embodiments, the mounting rack 30 has various positioning modes on the main body shell 11, which can be flexibly adjusted and set according to actual needs. As an example, the main body shell 11 is provided with a third positioning member 113, which includes but is not limited to a positioning column, a positioning convex, a positioning rod, a positioning shaft or a positioning protrusion, and the mounting rack 30 is provided with a positioning port 32, a positioning hole or a positioning recess and the like matched with the third positioning member 113, as long as the positioning cooperation with the third positioning member 113 can be realized. Among them, the number of third positioning members 113 is not limited to one, for example, two, three or other numbers. The number of positioning ports 32, positioning holes or positioning recesses on the mounting rack 30 is the same as the number of third positioning members 113, and is correspondingly arranged with the plurality of third positioning members 113, so that after the mounting rack 30 is installed into the main body shell 11, the mounting rack 30 is positioned in the main body shell 11.

[0076] Please refer to Figure 3 In one embodiment, the probe 40 includes a magnetic core 41 and a coil 42. The magnetic core 41 and the coil 42 are arranged in the first positioning groove 31, and the coil 42 is wound on the magnetic core 41.

[0077] Please refer to Figures 3 to 6The current detection device further comprises a detection circuit board 60 and a plurality of pins 70. The mounting frame 30 is further provided with a plurality of second wiring holes 33. The plurality of pins 70 are correspondingly arranged in the plurality of second wiring holes 33, one end of the pin 70 is electrically connected with the end portion 421 of the coil 42, and the other end of the pin 70 is electrically connected with the detection circuit board 60. In this way, since the plurality of pins 70 are correspondingly arranged in the plurality of second wiring holes 33, the mounting effect of the pin 70 on the mounting frame 30 is stable, and the end portion 421 of the coil 42 can be electrically connected with the detection circuit board 60, and at the same time, the end portion 421 of the coil 42 can be fixed on the mounting frame 30.

[0078] Specifically, the number of the coil 42 is one, two, three or more, for example. In the embodiment, the coil 42 is provided in two, and the two coils 42 have four end portions 421. The pin 70 is provided in four. One end of the four pins 70 is connected with the four end portions 421 one by one. The other end of the four pins 70 is electrically connected with the detection circuit board 60. Compared with the mode that the two end portions 421 of the coil 42 are directly connected with the detection circuit board 60, the pin 70 in the embodiment is used for switching, which can realize higher assembly efficiency and easier connection operation, and the connection effect is stable and reliable.

[0079] In order to facilitate the assembly of the plurality of pins 70 and the detection circuit board 60, the plurality of second wiring holes 33 are arranged in a row in sequence. Each pin 70 is provided in an L shape, for example, including a vertical segment and a horizontal segment connected with each other. The vertical segment of the pin 70 is arranged in the second wiring hole 33 and is electrically connected with the detection circuit board 60, and the horizontal segment of the pin 70 is electrically connected with the connecting segment 22 of the coil 42.

[0080] Specifically, the detection circuit board 60 is provided with a docking hole corresponding to the position of the pin 70. The vertical segment of the pin 70 is arranged in the docking hole and is welded and fixed on the detection circuit board 60, and the pin 70 is electrically connected with the circuit on the detection circuit board 60.

[0081] The mounting frame 30 and the main body shell 11 can be machined respectively and then assembled together. Compared with the mode that the mounting frame 30 is integrated on the main body shell 11, the machining difficulty of the mounting frame 30 and the main body shell 11 is lower when they are machined independently than when they are machined as a whole, and they can be produced in batches respectively, and the production efficiency is higher.

[0082] In some embodiments, the detection circuit board 60 is arranged on the main body shell 11, the mounting frame 30 or the cover 12, but is not limited thereto. In the embodiment, the detection circuit board 60 is arranged on the main body shell 11, so that the components can be quickly assembled together. Specifically, the detection circuit board 60 is arranged on the main body shell 11 by clamping, bonding or using fasteners such as screws and pins, but is not limited thereto.

[0083] Referring to Figure 3 With Figure 4 In one embodiment, the main body shell 11 is provided with a support portion 114 and a fifth clamping portion 115. The support portion 114 supports the detection circuit board 60, and the fifth clamping portion 115 clamps the side of the detection circuit board 60 away from the support portion 114. In this way, the detection circuit board 60 is stably mounted on the main body shell 11.

[0084] The support portion 114 is, for example, one or more. The plurality of support portions 114 are arranged at intervals on the main body shell 11 and support different positions of the detection circuit board 60, thereby ensuring high support stability. In addition, the fifth clamping portion 115 is, for example, one or more. The plurality of fifth clamping portions 115 clamp different positions of the outer periphery of the detection circuit board 60, thereby effectively clamping and fixing the detection circuit board 60 and preventing the detection circuit board 60 from loosening.

[0085] The support portion 114 is, for example, a step formed by the inner side of the side wall of the main body shell 11 being recessed. The bottom surface of the detection circuit board 60 is arranged on the step. In addition, the fifth clamping portion 115 is, for example, a hook, and the fifth clamping portion 115 hooks the top surface of the detection circuit board 60.

[0086] Referring to Figure 1 With Figure 9 In one embodiment, the detection circuit board 60 is provided with a connection terminal 61, and the cover 12 is provided with a window 123. The connection terminal 61 extends outward through the window 123. The number of connection terminals 61 is not limited to one, and is, for example, a plurality. The connection terminal 61 is electrically connected to an external device, thereby achieving the output of the detection signal to the outside.

[0087] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0088] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or identifying the number of the indicated technical characteristics. Thus, a feature with the "first", "second" limitation can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0089] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0090] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0091] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0092] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combination of the technical features does not exist Contradiction, it should be considered within the scope of the present application.

[0093] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A current detection device, characterized by, The current detection device comprises: a housing; a detection conductor penetrating through the housing; a mounting frame arranged inside the housing and positioned on the housing, the mounting frame being provided with a first positioning groove, a middle part of a bottom wall of the first positioning groove being formed with a clearance hole, and the detection conductor also penetrating through the clearance hole; and a probe arranged inside the first positioning groove and abuttingly positioned with an inner wall of the first positioning groove.

2. The current detection device according to claim 1, wherein A first positioning member is arranged on an inner wall of the housing, penetrates through the clearance hole, and also penetrates through the probe, with an outer wall of the first positioning member abuttingly positioned with an inner wall of the probe.

3. The current detection device according to claim 2, wherein A second positioning member is arranged on the housing, is provided with a first wire hole, and the detection conductor penetrates through the first wire hole correspondingly; the first positioning member is provided with a through hole in communication with an outside of the housing, and the second positioning member penetrates through the through hole.

4. The current detection device according to claim 3, wherein The housing comprises a main body shell and a cover body, the main body shell is formed with an opening, the cover body is connected with the main body shell and covers the opening; the mounting frame is arranged inside the main body shell and positioned on the main body shell; the first positioning member is connected with the main body shell, and the second positioning member is connected with the cover body.

5. The current detection device according to claim 4, wherein The first positioning member is integrally injection molded with the main body shell; and / or the second positioning member is integrally injection molded with the cover body.

6. The current detection device according to claim 4, wherein The detection conductor is one, the second positioning member is one, the detection conductor comprises a middle segment penetrating through the probe, and a central axis of the middle segment coincides with a central axis of the probe; or The detection conductor is multiple, the second positioning member is multiple, multiple second positioning members penetrate through the through hole, each second positioning member is arranged correspondingly with each detection conductor, the detection conductor comprises a middle segment penetrating through the second positioning member, multiple middle segments are rotationally symmetrical, and a rotationally symmetrical axis of multiple middle segments coincides with the central axis of the probe.

7. The current detection device according to claim 6, wherein Multiple second positioning members penetrate through the through hole of the first positioning member, and opposite ends of multiple second positioning members respectively extend to the outside of the housing.

8. The current detection device according to claim 6, wherein The current detection device further comprises a positioning frame connected with the housing, multiple positioning portions are arranged on the positioning frame, the detection conductor further comprises two connection segments respectively connected with opposite ends of the middle segment, and multiple connection segments are one-to-one correspondingly positioned on multiple positioning portions.

9. The current detection device according to claim 8, wherein A second positioning groove is arranged on the positioning frame, a side portion of the housing is arranged into the second positioning groove, a first clamping portion is arranged on the positioning frame, a second clamping portion is arranged on the housing, and the first clamping portion and the second clamping portion are clamped and matched with each other.

10. The current detection device according to claim 4, wherein Multiple third clamping portions are arranged on the main body shell, multiple fourth clamping portions are arranged on the cover body, and multiple fourth clamping portions and multiple third clamping portions are one-to-one correspondingly clamped and matched.

11. The current detection device according to claim 4, wherein The probe comprises a magnetic core and a coil; the magnetic core and the coil are arranged inside the first positioning groove, and the coil is wound around the magnetic core; The current detection device further comprises a detection circuit board and a plurality of pins, and the mounting frame is further provided with a plurality of second wiring holes, the plurality of pins are correspondingly arranged in the plurality of second wiring holes, one end of the pin is electrically connected with the end of the coil, and the other end of the pin is electrically connected with the detection circuit board.

12. The current sensing device of claim 11, wherein, The main body shell is provided with a supporting portion and a fifth clamping portion; the supporting portion supports the detection circuit board, and the fifth clamping portion is clamped on the side of the detection circuit board away from the supporting portion.

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