Hall current sensor

Abstract

The utility model relates to a Hall current sensor which comprises a support, a magnetic core assembly, a circuit board, a Hall element and a positioning assembly. The bracket is provided with a through hole; the magnetic core assembly is arranged on the support and provided with an air gap opposite to the through hole. The circuit board is arranged on one side of the bracket back to the magnetic core assembly; a pin of the Hall element is connected with the circuit board; one end, far away from the pin, of the Hall element passes through the through hole and extends into the air gap; the positioning assembly comprises a positioning piece and a first positioning column capable of being inserted into the positioning piece, one of the positioning piece and the first positioning column is arranged on the magnetic core assembly and located on one side of the air gap, and the other one of the positioning piece and the first positioning column is arranged on the support. According to the Hall current sensor, the risk that the Hall element deviates in the air gap can be reduced, and the measurement precision can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensors, in particular to a Hall current sensor. BACKGROUND

[0002] The Hall current sensor is a device for measuring current made by using the principle of Hall effect, mainly comprising a magnetic core assembly, a Hall element and a circuit board, the magnetic core assembly is arranged on one side of the circuit board, the magnetic core assembly has an air gap for accommodating the Hall element, the pins of the Hall element are connected with the circuit board, and the end of the Hall element away from the pins extends into the air gap.

[0003] In the related art, when assembling the Hall current sensor, the Hall element is first connected with the circuit board through the pins to fix the Hall element on the circuit board, and then the air gap of the magnetic core assembly is aligned with the Hall element, and the magnetic core assembly is fixed with the circuit board by means of glue dispensing to limit the relative position of the magnetic core assembly and the circuit board. However, the magnetic core assembly is easily offset in the air gap when fixed on the circuit board by means of glue dispensing, which reduces the measurement accuracy of the Hall current sensor. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a Hall current sensor which can reduce the risk of the Hall element being offset in the air gap and improve the measurement accuracy.

[0005] A Hall current sensor comprises:

[0006] a support provided with a through hole;

[0007] a magnetic core assembly arranged on the support and having an air gap opposite to the through hole;

[0008] a circuit board arranged on the side of the support away from the magnetic core assembly;

[0009] a Hall element, the pins of the Hall element being connected with the circuit board, and the end of the Hall element away from the pins penetrating through the through hole and extending into the air gap; and

[0010] a positioning assembly comprising a positioning piece and a first positioning column capable of being inserted on the positioning piece, one of the positioning piece and the first positioning column being arranged on the magnetic core assembly and located on one side of the air gap, and the other being arranged on the support.

[0011] In one of the embodiments, the magnetic core assembly comprises a core, a core sleeve and a coil, the core is arranged inside the core sleeve, the coil is arranged around the outer periphery of the core sleeve, the core has the air gap thereon, the core sleeve is provided with an avoiding opening for avoiding the air gap, and the core sleeve is provided with the positioning piece or the first positioning column.

[0012] In one of the embodiments, the positioning member is arranged on the iron core sleeve and protrudes from the outside of the iron core sleeve and is located at one side of the avoiding opening, the first positioning hole is arranged on the positioning member, the first positioning column is arranged on the support, and one end of the first positioning column away from the support is inserted into the first positioning hole.

[0013] In one of the embodiments, the positioning member is an integral structure with the iron core sleeve.

[0014] In one of the embodiments, the first positioning column is an integral structure with the support.

[0015] In one of the embodiments, a second positioning column is further arranged, one of the support and the circuit board is provided with a second positioning hole, and the other is provided with the second positioning column, the second positioning column can be inserted into the second positioning hole in interference fit.

[0016] In one of the embodiments, the second positioning hole is arranged on the circuit board, the second positioning column is arranged on the side of the support close to the circuit board, the second positioning column comprises a column body and an insertion part, one end of the column body is connected with the support, the other end is connected with the insertion part, the insertion part is inserted into the second positioning hole, the outer side of the column body protrudes from the outer side of the insertion part, so that the end of the column body and the outer side of the insertion part form a positioning step, and the positioning step abuts against the circuit board.

[0017] In one of the embodiments, the magnetic core assembly has a ring structure, the support comprises a support plate and a plurality of clamping claws arranged on the support plate, the magnetic core assembly and the circuit board are arranged on the two sides of the support plate respectively, the clamping claws at least partially protrude from the side of the support plate away from the circuit board, a plurality of the clamping claws are distributed at intervals around the set axis, the magnetic core assembly is located in the area surrounded by a plurality of the clamping claws, and the clamping claws are clamped with the magnetic core assembly.

[0018] In one of the embodiments, the clamping claw comprises a resilient arm and a clamping buckle connected with the resilient arm, one end of the resilient arm away from the clamping buckle is connected with the support plate, and the clamping buckle is clamped with the magnetic core assembly.

[0019] In one of the embodiments, the support further comprises a plurality of limiting plates, a plurality of the limiting plates are distributed at intervals around the set axis, and there are at least one clamping claw between two adjacent limiting plates, and the limiting plates are distributed at intervals with the clamping claws.

[0020] In one of the embodiments, a housing is further included, and a cavity is arranged inside the housing, the magnetic core assembly, the circuit board and the bracket are arranged in the cavity.

[0021] In the Hall current sensor, the bracket provides positioning and support for the magnetic core assembly and the circuit board, one of the positioning member and the first positioning column is arranged on the magnetic core assembly and located at one side of the air gap, and the other is arranged on the bracket, the first positioning column is inserted into the positioning member, the positioning assembly is positioned on the magnetic core assembly near the air gap, and the movement of the magnetic core assembly relative to the bracket is limited, so that the movement of the magnetic core assembly relative to the circuit board can be limited without the movement of the circuit board relative to the bracket, the risk of deviation of the Hall element in the air gap is reduced, and the measurement accuracy of the Hall current is improved. In addition, the magnetic core assembly can be positioned on the bracket by inserting the first positioning column into the positioning member, and the air gap can be accurately positioned. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is an angle perspective view of the Hall current sensor in some embodiments of the present application.

[0023] Figure 2 It is another angle perspective view of the Hall current sensor in some embodiments of the present application.

[0024] Figure 3 It is an angle perspective view of the Hall current sensor after removing the housing in some embodiments of the present application.

[0025] Figure 4 It is another angle perspective view of the Hall current sensor after removing the housing in some embodiments of the present application.

[0026] Figure 5 It is an exploded view of the Hall current sensor after removing the housing in some embodiments of the present application.

[0027] Figure 6 It is a structure view of the iron core, the circuit board, the bracket, the Hall element and the first positioning column in some embodiments of the present application.

[0028] Figure 7 It is a perspective view of the magnetic core assembly in some embodiments of the present application.

[0029] Figure 8 It is a perspective view of the bracket in some embodiments of the present application.

[0030] Figure 9 It is a perspective view of the circuit board in some embodiments of the present application.

[0031] 1, magnetic core assembly; 11, core; 12, air gap; 13, core sleeve; 131, avoiding port; 14, coil; 15, positioning piece; 151, first positioning hole; 2, circuit board; 3, support; 31, support plate; 32, clamping jaw; 321, elastic arm; 322, buckle; 33, limiting plate; 34, through hole; 4, Hall element; 5, first positioning column; 6, second positioning column; 61, column body; 62, plug-in part; 63, positioning step; 7, second positioning hole; 8, shell; 9, conductive lead-out piece. DETAILED DESCRIPTION

[0032] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0033] 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 purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0034] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0035] In the present application, unless specifically defined otherwise, if there is an appearance of the terms "installation", "connection", "connection", "fixation" and the like, these terms should be understood in a broad sense. 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 defined. 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.

[0036] In the present application, unless specifically defined otherwise, if there is a description of the first feature "on" or "below" the second feature and the like, 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 it can only mean 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 it can only mean that the first feature is lower than the second feature in horizontal height.

[0037] 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 only for illustrative purposes and do not represent the only implementation.

[0038] Referring to Figure 3 , Figure 4 and Figure 5 , Figure 3 shows a perspective view of a Hall current sensor in some embodiments of the present application after the shell is removed, Figure 4 shows another perspective view of a Hall current sensor in some embodiments of the present application, Figure 5The exploded view of the Hall current sensor without the shell in some embodiments of the present application is shown. The Hall current sensor in some embodiments of the present application includes a bracket 3, a magnetic core assembly 1, a circuit board 2, a Hall element 4, and a positioning assembly. The bracket 3 is provided with a through hole 34, the magnetic core assembly 1 is arranged on the bracket 3 and has an air gap 12 opposite to the through hole 34, the circuit board 2 is arranged on the side of the bracket 3 away from the magnetic core assembly 1, the pins of the Hall element 4 are connected with the circuit board 2, and the end of the Hall element 4 away from the pins passes through the through hole 34 and extends into the air gap 12. The positioning assembly includes a positioning piece 15 and a first positioning column 5 capable of being inserted into the positioning piece 15, one of the positioning piece 15 and the first positioning column 5 is arranged on the magnetic core assembly 1 and located at one side of the air gap 12, and the other of the positioning piece 15 and the first positioning column 5 is arranged on the bracket 3. The bracket 3 provides positioning and support for the magnetic core assembly 1 and the circuit board 2, one of the positioning piece 15 and the first positioning column 5 is arranged on the magnetic core assembly 1 and located at one side of the air gap 12, and the other is arranged on the bracket 3. The first positioning column 5 is inserted into the positioning piece 15, so that the positioning assembly is positioned near the air gap 12 to position the magnetic core assembly 1, and the movement of the magnetic core assembly 1 relative to the bracket 3 is limited. In this way, the movement of the magnetic core assembly 1 relative to the circuit board 2 can be limited without moving the circuit board 2 relative to the bracket 3, which reduces the risk of the Hall element 4 deviating in the air gap 12, thereby improving the measurement accuracy of the Hall current. In addition, by inserting the first positioning column 5 into the positioning piece 15, the magnetic core assembly 1 can also be positioned on the bracket 3, thereby facilitating accurate positioning of the air gap 12.

[0039] In some embodiments, referring to Figure 3 、 Figure 5 and Figure 7 , Figure 7 is a perspective view of the magnetic core assembly in some embodiments of the present application. The magnetic core assembly 1 includes a core 11, a core sleeve 13, and a coil 14, the core 11 is arranged inside the core sleeve 13, the coil 14 is arranged around the outer peripheral side of the core sleeve 13, the core 11 has an air gap 12 thereon, the core sleeve 13 is provided with an avoiding opening 131 for avoiding the air gap 12, and the core sleeve 13 is provided with a positioning piece 15 or a first positioning column 5. The avoiding opening 131 is opposite to the air gap 12, and the air gap 12 is avoided through the avoiding opening 131, so that the end of the Hall element 4 away from the pins can pass through the avoiding opening 131 and extend into the air gap 12 inside the core sleeve 13, avoiding the positional interference of the core sleeve 13 on the Hall element 4. In addition, the core sleeve 13 also provides space for the positioning piece 15 or the first positioning column 5.

[0040] Referring to Figure 3 , the two ends of the coil 14 are respectively electrically connected with conductive lead-out pieces 9, and the conductive lead-out pieces 9 respectively pass through the bracket 3 and the circuit board 2.

[0041] Referring to Figure 5 andFigure 7 The positioning member 15 is arranged on the core sleeve 13, and the positioning member 15 protrudes from the outside of the core sleeve 13 and is located at one side of the avoiding opening 131. The first positioning hole 151 is arranged on the positioning member 15, and the first positioning column 5 is arranged on the support 3. The first positioning column 5 is inserted into the first positioning hole 151 at the end away from the support 3. The first positioning hole 151 is arranged on the positioning member 15, which facilitates the insertion of the first positioning column 5 into the first positioning hole 151, and reduces the assembly difficulty of the Hall current sensor.

[0042] In the embodiment, refer to Figure 3 The positioning member 15 and the core sleeve 13 are in an integrated structure, and the first positioning column 5 and the support 3 are in an integrated structure, which is beneficial to reduce the assembly process of the positioning member 15 and the core sleeve 13 and the first positioning column 5 and the support 3, and the risk of loosening of the positioning member 15 on the core sleeve 13 and the first positioning column 5 on the support 3 is small. Of course, in other embodiments, only the positioning member 15 and the core sleeve 13 can be arranged in an integrated structure, or only the first positioning column 5 and the support 3 can be arranged in an integrated structure.

[0043] In some embodiments, refer to Figure 4 , Figure 8 and Figure 9 , Figure 8 is a perspective view of the support in some embodiments of the application, Figure 9 is a perspective view of the circuit board in some embodiments of the application. The Hall current sensor further comprises a second positioning column 6. One of the support 3 and the circuit board 2 is provided with a second positioning hole 7, and the other is provided with the second positioning column 6. The second positioning column 6 can be inserted into the second positioning hole 7 in interference. The second positioning column 6 is inserted into the second positioning hole 7 in interference, which limits the movement of the circuit board 2 relative to the support 3, prevents the relative movement of the circuit board 2 and the magnetic core assembly 1, and further prevents the movement of the Hall element 4 with the circuit board 2, thereby further reducing the displacement of the Hall element 4 in the air gap 12.

[0044] In the embodiment, refer to Figure 8 and Figure 9The second positioning hole 7 is arranged on the circuit board 2, and the second positioning column 6 is arranged on the bracket 3 close to the circuit board 2. The second positioning column 6 comprises a column body 61 and a plug-in part 62. One end of the column body 61 is connected with the bracket 3, and the other end is connected with the plug-in part 62. The plug-in part 62 is plugged in the second positioning hole 7. The outer side of the column body 61 protrudes from the outer side of the plug-in part 62, so that the end of the column body 61 and the outer side of the plug-in part 62 form a positioning step 63, and the positioning step 63 abuts against the circuit board 2. The positioning step 63 is arranged on the second positioning column 6. When the circuit board 2 and the bracket 3 are assembled, the circuit board 2 can be positioned by the positioning step 63, so that the circuit board 2 and the bracket 3 maintain a certain distance, preventing the electronic elements on the circuit board 2 from being damaged due to the small distance between the circuit board 2 and the bracket 3. In addition, the certain distance between the circuit board 2 and the bracket 3 also reserves space for heat dissipation of the circuit board 2, which is beneficial to heat dissipation.

[0045] In some embodiments, referring to Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 6 is a structural view of the core, the circuit board, the bracket, the Hall element and the first positioning column in some embodiments of the present application. The magnetic core assembly 1 has a ring structure. The bracket 3 comprises a plurality of support plates 31 and clamping claws 32 arranged on the support plates 31. The magnetic core assembly 1 and the circuit board 2 are arranged on the two sides of the support plate 31 away from each other, respectively. The support plate 31 has a ring structure. When the magnetic core assembly is installed on the support plate 31, the axis of the support plate 31 coincides with the axis of the magnetic core assembly 1. The clamping claw 32 at least partially protrudes from the side of the support plate 31 away from the circuit board 2. A plurality of clamping claws 32 are arranged at intervals around the set axis. In this embodiment, the set axis is the axis of the support plate 31. The magnetic core assembly 1 is located in the area surrounded by the plurality of clamping claws 32. The clamping claw 32 is clamped with the magnetic core assembly 1 to limit the magnetic core assembly 1 on the support plate 31. Specifically, the conductive lead-out piece 9 penetrates the support plate 31. The support plate 31 provides support and positioning for the magnetic core assembly 1 and the circuit board 2. The magnetic core assembly 1 is clamped on the support plate 31 by clamping the clamping claw 32 with the magnetic core assembly 1, thereby limiting the movement of the magnetic core assembly 1 on the bracket 3 in the direction away from the circuit board 2, thereby preventing the magnetic core assembly 1 from being separated from the bracket 3. After the clamping claw 32 clamps the magnetic core assembly 1 on the bracket 3, the first positioning column 5 is inserted into the positioning piece 15 to limit the rotation of the magnetic core assembly 1 on the bracket 3. Therefore, under the cooperation of the clamping claw 32 and the positioning assembly, the magnetic core assembly 1 can be fixed on the bracket 3, thereby fixing the relative position of the magnetic core assembly 1 and the circuit board 2. The step of fixing the circuit board 2 and the coil 14 assembly by dispensing is omitted, which is more conducive to the assembly of the Hall current sensor.

[0046] Further, referring to Figure 3 , Figure 5 andFigure 6 The clamping jaw 32 comprises an elastic arm 321 and a clamping buckle 322 connected with the elastic arm 321. The end of the elastic arm 321 away from the clamping buckle 322 is connected with the support plate 31, and the clamping buckle 322 is clamped with the magnetic core assembly 1. The elastic arm 321 has a certain elasticity. When assembling, an external force is applied to the magnetic core assembly 1 to push the clamping buckle 322. After the elastic arm 321 is stressed by the clamping buckle 322, the elastic arm 321 is elastically deformed to drive each clamping buckle 322 to move in the radial direction of the magnetic core assembly 1, so that the magnetic core assembly 1 as a whole can enter the area surrounded by the plurality of clamping jaws 32. After the magnetic core assembly 1 passes the clamping buckle 322, the elastic arm 321 drives the clamping buckle 322 to reset, so that the magnetic core assembly 1 is clamped on the support plate 31.

[0047] In the embodiment, referring to Figure 3 The clamping jaw 32 is provided with five clamping jaws 32 which surround the outer circumferential side of the magnetic core assembly 1. In actual implementation, the number of clamping jaws 32 can be flexibly adjusted as needed, for example, the number of clamping jaws 32 is set to three or four, etc. The number of clamping jaws 32 is not specifically limited herein.

[0048] It can be understood that the more the number of clamping jaws 32 is, the more difficult it is to assemble the magnetic core into the support 3. In the embodiment, referring to Figure 3 , Figure 5 and Figure 6 The support 3 further comprises a plurality of limiting plates 33 which are distributed at intervals around the setting axis, and at least one clamping jaw 32 is between any two adjacent limiting plates 33. The limiting plates 33 are distributed at intervals with the clamping jaws 32. In the case that the number of clamping jaws 32 is small, the limiting plates 33 can limit the magnetic core assembly 1, limit the magnetic core assembly 1 from falling off the area surrounded by the clamping jaws 32, and also prevent the clamping jaws 32 from being extruded and deformed by the magnetic core assembly 1. In the embodiment, the support 3 comprises three limiting plates 33. In other examples, the number of limiting plates 33 can be set to two, four or five, etc. The number of limiting plates 33 is not specifically limited herein.

[0049] In the embodiment, referring to Figure 4 The magnetic core assembly 1, the support plate 31 and the circuit board 2 all have a ring structure. The second positioning assembly is provided with four groups which are distributed at intervals around the axis of the circuit board 2, so that the circuit board 2 is positioned with the support 3 through the four second positioning columns 6, and the positioning effect of the circuit board 2 is improved. In actual implementation, the number of second positioning assemblies can be flexibly set as needed, for example, the number of second positioning assemblies is set to one group, two groups, three groups or five groups, etc. The number of second positioning assemblies is not specifically limited herein.

[0050] In some embodiments, referring to Figure 1 and Figure 2The Hall current sensor further comprises a shell 8, the shell 8 is internally provided with a cavity, the magnetic core assembly 1, the circuit board 2 and the bracket 3 are all arranged in the cavity, and the shell 8 provides protection for the magnetic core assembly 1, the circuit board 2 and the bracket 3. The cavity in the shell 8 can also be encapsulated by pouring glue, and the glue encapsulates the magnetic core assembly 1, the circuit board 2 and the bracket 3 for sealing and insulation protection.

[0051] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as falling within the scope of the present disclosure.

[0052] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present 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, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A Hall current sensor, characterized by include: The bracket has through holes; A magnetic core assembly is disposed on the bracket and has an air gap opposite to the through hole; A circuit board is disposed on the side of the bracket facing away from the magnetic core assembly; A Hall element, wherein the pins of the Hall element are connected to the circuit board, and one end of the Hall element away from the pins passes through the through hole and extends into the air gap; and, The positioning assembly includes a positioning element and a first positioning post that can be inserted into the positioning element. One of the positioning element and the first positioning post is disposed on the magnetic core assembly and located on one side of the air gap, and the other is disposed on the bracket.

2. The Hall current sensor according to claim 1, characterized in that The magnetic core assembly includes an iron core, an iron core sleeve, and a coil. The iron core is disposed inside the iron core sleeve, and the coil is wound around the outer periphery of the iron core sleeve. The iron core has the air gap, and the iron core sleeve is provided with a clearance opening for avoiding the air gap. The iron core sleeve is provided with the positioning element or the first positioning post.

3. The Hall current sensor according to claim 2, characterized in that The positioning element is disposed on the iron core sleeve, and the positioning element protrudes from the outside of the iron core sleeve and is located on one side of the clearance opening. The positioning element is provided with a first positioning hole, and the first positioning post is disposed on the bracket. The end of the first positioning post away from the bracket is inserted into the first positioning hole.

4. The Hall current sensor according to claim 3, characterized in that The positioning component and the iron core sleeve are an integral structure; And / or, the first positioning post and the bracket are an integral structure.

5. The Hall current sensor of claim 1, wherein, It also includes a second positioning post. One of the bracket and the circuit board is provided with a second positioning hole, and the other is provided with a second positioning post. The second positioning post can be interference-fitted into the second positioning hole.

6. The Hall current sensor of claim 5, wherein, The second positioning hole is disposed on the circuit board, and the second positioning post is disposed on the side of the bracket near the circuit board. The second positioning post includes a post body and a plug-in part. One end of the post body is connected to the bracket, and the other end is connected to the plug-in part. The plug-in part is inserted into the second positioning hole. The outer surface of the post body protrudes from the outer surface of the plug-in part so that the end of the post body and the outer surface of the plug-in part form a positioning step, and the positioning step abuts against the circuit board.

7. The Hall current sensor of claim 1, wherein, The magnetic core assembly has a ring structure. The bracket includes a support plate and a plurality of claws disposed on the support plate. The magnetic core assembly and the circuit board are respectively disposed on opposite sides of the support plate. The claws at least partially protrude from the side of the support plate away from the circuit board. The plurality of claws are distributed at intervals around a set axis. The magnetic core assembly is located in the area surrounded by the plurality of claws, and the claws engage with the magnetic core assembly.

8. The Hall current sensor of claim 7, wherein, The claw includes an elastic arm and a buckle connected to the elastic arm. The end of the elastic arm away from the buckle is connected to the support plate, and the buckle engages with the magnetic core assembly.

9. The Hall current sensor of claim 7, wherein, The bracket also includes multiple limiting plates, which are distributed at intervals around the set axis, and there is at least one claw between two adjacent limiting plates, with the limiting plates and the claws being distributed at intervals.

10. The Hall current sensor according to any one of claims 1 to 9, characterized in that Also included is a housing having a cavity disposed therein, the magnetic core assembly, the circuit board, and the bracket each being disposed within the cavity.

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