Current acquisition apparatus, distribution box, and electrical device

Abstract

A current acquisition apparatus, a distribution box, and an electrical device. The current acquisition apparatus comprises a conductive member, a circuit board, a first acquisition module for detecting a first current signal of the conductive member, and a second acquisition module for detecting a second current signal of the conductive member. The circuit board comprises a connector, the first acquisition module comprises an acquisition member provided on the circuit board and electrically connected to the connector, and the second acquisition module is provided on the circuit board and is electrically connected to the connector.

Description

Current acquisition device, distribution box and electric equipment

[0001] Cross-reference to Related Applications

[0002] The present disclosure claims priority to the Chinese patent application No. 202422393541.7, filed on September 29, 2024, and entitled "Current acquisition device, distribution box and electric equipment", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the field of current detection, in particular, to a current acquisition device, a distribution box and an electric equipment. BACKGROUND

[0004] In the distribution box, Hall sensors and shunt resistors can be used in combination to measure the current in the working circuit. In the related art, the Hall sensors and the shunt resistors need to be lapped together by fasteners for use, which increases the use of excess wiring harness and has a low degree of integration. SUMMARY

[0005] The purpose of the present disclosure is to provide a current acquisition device, a distribution box and an electric equipment, which can reduce the use of wiring harness and have a high degree of integration.

[0006] To achieve the above purpose, the first aspect of the present disclosure provides a current acquisition device, comprising:

[0007] a conductive member;

[0008] a circuit board comprising a connector;

[0009] a first acquisition module comprising an acquisition element arranged on the circuit board and electrically connected to the connector, the first acquisition module being configured to detect a first current signal of the conductive member; and

[0010] a second acquisition module arranged on the circuit board and electrically connected to the connector, the second acquisition module being configured to detect a second current signal of the conductive member.

[0011] Optionally, the acquisition element is configured as a Hall element.

[0012] The first acquisition module further comprises a magnetic core assembly, the magnetic core assembly being sleeved around the conductive member, and the magnetic core assembly comprising a first end and a second end, the Hall element being arranged in a magnetic flux region between the first end and the second end.

[0013] Optionally, the second acquisition module is configured as a shunt resistor, the shunt resistor being connected in parallel to the conductive member.

[0014] Optionally, a projection of the shunt resistor on the circuit board is arranged apart from a projection of the magnetic core assembly on the circuit board.

[0015] Optionally, the current collecting device further comprises a housing, the housing is formed with a through cavity and a receiving cavity surrounding the through cavity, the conductive member is arranged through the through cavity, part of the circuit board is arranged in the receiving cavity, and part of the circuit board extends into the through cavity and is fixedly connected with the conductive member.

[0016] Optionally, the housing comprises a housing body and a cover plate arranged on the housing body, the receiving cavity is formed between the housing body and the cover plate, the housing body is formed with a first channel, the cover plate is formed with a second channel corresponding to the first channel, and the first channel and the second channel are in communication to form the through cavity.

[0017] Optionally, the housing body comprises an outer frame, an annular frame arranged inside the outer frame, and a support arranged between the annular frame and the outer frame.

[0018] The inner cavity of the annular frame forms the first channel, the outer side wall of the annular frame, the inner side wall of the outer frame and the cover plate surround the receiving cavity, and the support is used to support the circuit board and the magnetic core assembly.

[0019] Optionally, the outer frame and the annular frame are sealingly connected to the cover plate respectively on the side of the cover plate.

[0020] Optionally, the annular frame has a lateral opening, the support comprises a first limiting assembly, the first limiting assembly comprises two first limiting portions arranged apart along a first direction, a first gap corresponding to the lateral opening is formed between the two first limiting portions, the circuit board is arranged through the lateral opening and the first gap, and the relative position between the circuit board and the housing body in the first direction is defined.

[0021] Optionally, a second limiting assembly is arranged on the inner side wall of the outer frame, the second limiting assembly is located on the side of the first limiting assembly away from the annular frame, the second limiting assembly comprises two second limiting portions arranged apart along the first direction, a second gap corresponding to the first gap is formed between the two second limiting portions, and the circuit board is arranged through the second gap.

[0022] Optionally, the first limiting assembly and the second limiting assembly have a spacing area for accommodating the Hall element.

[0023] Optionally, the two first limiting portions are connected to the annular frame respectively, and the two first limiting portions and the annular frame surround a slot.

[0024] The cover plate is provided with a plug matched with the slot, the plug comprises a clamping groove part, the plug is inserted into the slot, so that the circuit board passes through the clamping groove part, and the circuit board is clamped between the plug and the bottom plate of the shell body in the second direction.

[0025] Optionally, the connector comprises a connector base provided on the circuit board, the outer frame is provided with a third limiting part, the third limiting part is matched with the connector base, and the third limiting part is used for limiting the relative position of the circuit board and the shell in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0026] Optionally, the support comprises a plurality of fourth limiting parts surrounding the annular frame and a plurality of fifth limiting parts provided on the side wall of the shell body, the magnetic core assembly is sleeved on the plurality of fourth limiting parts, so that the plurality of fourth limiting parts abut against the inner wall of the magnetic core assembly and the plurality of fifth limiting parts abut against the outer wall of the magnetic core assembly.

[0027] Optionally, the shell body is provided with a protruding rib located in the accommodating cavity, one side of the magnetic core assembly in the second direction abuts against the protruding rib;

[0028] The cover plate is provided with a top rib matched with the protruding rib, the other side of the magnetic core assembly in the second direction abuts against the top rib, so that the magnetic core assembly is clamped between the protruding rib and the top rib in the second direction.

[0029] Optionally, the conductive part is formed with a first fixing hole, the shell comprises a fixing frame with a second fixing hole, the fixing frame is connected to the first fixing hole of the conductive part through a fastener penetrating through the second fixing hole, so as to fixedly connect the conductive part and the fixing frame.

[0030] The second aspect of the present disclosure provides a distribution box comprising the current acquisition device as described above.

[0031] The third aspect of the present disclosure provides a power consumption device comprising the current acquisition device provided in the first aspect of the present disclosure and / or the distribution box provided in the second aspect of the present disclosure.

[0032] Through the above technical solution, the first acquisition module is used for detecting the first current signal of the conductive part, the second acquisition module is used for detecting the second current signal of the conductive part, the acquisition part of the first acquisition module and the second acquisition module are arranged on the same circuit board, and the acquisition part and the second acquisition module are connected to the connector on the circuit board, so that the first acquisition module and the second acquisition module can synchronously acquire the current of the conductive part, and the use of external wiring harness is reduced, and the integration degree is higher.

[0033] Other features and advantages of the present disclosure will be described in detail in the following detailed description of the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0034] FIG. 1 is a schematic diagram of the overall structure of a current collection device according to an exemplary embodiment of the present disclosure;

[0035] FIG. 2 is an exploded schematic diagram of the current collection device according to an exemplary embodiment of the present disclosure;

[0036] FIG. 3 is a schematic diagram of the structure of a housing body according to an exemplary embodiment of the present disclosure;

[0037] FIG. 4 is a schematic diagram of the structure of a cover plate according to an exemplary embodiment of the present disclosure;

[0038] FIG. 5 is a schematic diagram of the structure of a circuit board and a conductive member mounted on the housing body according to an exemplary embodiment of the present disclosure;

[0039] FIG. 6 is a schematic diagram of the structure of a Hall element, a connector base, a conductive member, and a shunt resistor integrated on a circuit board according to an exemplary embodiment of the present disclosure;

[0040] FIG. 7 is a schematic diagram of the structure of a distribution box provided with a current collection device according to an exemplary embodiment of the present disclosure;

[0041] FIG. 8 is a schematic diagram of the structure of an electrical device provided with a distribution box according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] The detailed description of the embodiments of the present disclosure will be described below with reference to the accompanying drawings. It should be understood that the detailed description of the embodiments described herein is merely intended to illustrate and explain the present disclosure, and is not intended to limit the present disclosure.

[0043] In the present disclosure, an XYZ coordinate system is established for the current collection device, wherein the X direction is a first direction, the Y direction is a second direction, and the Z direction is a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other. Unless otherwise specified, the orientation words such as "inner" and "outer" refer to the inner and outer relative to the outline of the component or structure itself. In addition, it should be noted that the terms such as "first", "second", etc. are used to distinguish one element from another element, and do not have sequentiality and importance. In addition, in the description with reference to the drawings, the same reference signs in different drawings represent the same elements.

[0044] As shown in FIGS. 1-6, the first aspect of the present disclosure provides a current acquisition device 900, comprising a conductive member 10, a circuit board 30, a first acquisition module 40 and a second acquisition module 50. The circuit board 30 comprises a connector 31, the first acquisition module 40 comprises an acquisition element 41 disposed on the circuit board 30 and electrically connected to the connector 31, and the second acquisition module 50 is disposed on the circuit board 30 and electrically connected to the connector 31. The first acquisition module 40 is configured to detect a first current signal of the conductive member 10, and the second acquisition module 50 is configured to detect a second current signal of the conductive member 10. By integrating the acquisition element 41 of the first acquisition module 40 and the second acquisition module 50 on the same circuit board 30, and connecting both the acquisition element 41 and the second acquisition module 50 to the connector 31 of the circuit board 30, the current acquisition device 900 can achieve synchronous acquisition of the current of the conductive member 10 by the first acquisition module 40 and the second acquisition module 50, and reduce the use of external wiring harnesses, thereby increasing the integration of the current acquisition device 900.

[0045] In the above embodiments, the first acquisition module 40 and the second acquisition module 50 can use different current acquisition modules to achieve synchronous acquisition of the current of the conductive member 10 by different current acquisition modules.

[0046] In some embodiments, as shown in FIGS. 2, 5 and 6, the acquisition element 41 is configured as a Hall element 410. The first acquisition module 40 further comprises a magnetic core assembly 42, which is sleeved around the circumference of the conductive member 10. The magnetic core assembly 42 comprises a first end 421 and a second end 422, and the Hall element 410 is disposed in a magnetic flux region 1000 between the first end 421 and the second end 422. In order to ensure the sampling accuracy of the first acquisition module 40, the Hall element 410 can be kept centered with the first end 421 and the second end 422 of the magnetic core assembly 42, i.e., the center of the Hall element 410 coincides with the center of the magnetic flux region 1000, so that the induced magnetic induction lines of the magnetic core assembly 42 can pass through the Hall element 410 on the copper bar integrated assembly vertically.

[0047] In addition, the second acquisition module 50 can be configured as a shunt resistor 500, which is connected in parallel to the conductive member 10. Specifically, the shunt resistor 500 can be connected in parallel to the resistance stable region 13 of the conductive member 10. The conductive member 10 can be configured as a copper bar, and the resistance stable region 13 of the conductive member 10 can be made of manganese copper alloy.

[0048] When the first acquisition module 40 comprises the Hall element 410 and the magnetic core assembly 42 and the second acquisition module 50 is configured as the shunt resistor 500, the current sampling ranges used by the two acquisition modules are different, the first acquisition module 40 comprising the Hall element 410 and the magnetic core assembly 42 is suitable for acquisition of a larger current, and the shunt resistor 500 is suitable for acquisition of a smaller current. By using the two acquisition modules to acquire the current of the conductive member 10, the current acquisition device 900 can have a wider current sampling range.

[0049] In addition, the first acquisition module 40 comprising the Hall element 410 and the magnetic core assembly 42 and the second acquisition module 50 configured as the shunt resistor 500 can correct each other, thereby improving the sampling accuracy of the current within a certain range.

[0050] It should be understood that the Hall element 410 and the shunt resistor 500 are arranged on the same circuit board and synchronously acquire the current signal of the same conductive member 10, which can also reduce the number of fasteners and conductive members 10, optimize the structure, and reduce the cost.

[0051] In other possible embodiments, one of the first acquisition module 40 and the second acquisition module 50 can be configured as a fluxgate current sampling module, which will not be described here.

[0052] In some embodiments, as shown in FIGS. 2, 5 and 6, when the first acquisition module 40 comprises the Hall element 410 and the magnetic core assembly 42 and the second acquisition module 50 is configured as the shunt resistor 500, the shunt resistor 500 and the Hall element 410 are both arranged on the circuit board 30. The projection of the shunt resistor 500 on the circuit board 30 is arranged apart from the projection of the magnetic core assembly 42 on the circuit board 30, so as to avoid the influence of the induced magnetic field on the magnetic core assembly 42 on the sampling of the shunt resistor 500 during work.

[0053] In addition, as shown in FIG. 6, in order to avoid other components on the circuit board 30, the shunt resistor 500 and the Hall element 410 can be arranged on opposite sides of the circuit board 30, respectively. The conductive member 10 is fixedly connected to the circuit board 30 and located on the side where the Hall element 410 is located. A gap can be arranged between the conductive member 10 of the resistance stabilization region 13 and the circuit board 30, so as to facilitate the electrical connection of the shunt resistor 500 to the conductive member 10.

[0054] In some embodiments, as shown in FIGS. 1-5, the current collecting device 900 further comprises a housing 20, the housing 20 is formed with a through cavity 60 and a receiving cavity 23 surrounding the through cavity 60, the conductive member 10 is arranged in the through cavity 60, part of the circuit board 30 is arranged in the receiving cavity 23, and part of the circuit board 30 extends into the through cavity 60 and is fixedly connected with the conductive member 10. In addition, the magnetic core assembly 42 matched with the Hall element 410 can be arranged in the receiving cavity 23, and the housing 20 can integrate the first collecting module 40 and the second collecting module 50, facilitating the current collecting device 900 to be held during use.

[0055] In the above-mentioned embodiments, the housing 20 can also protect part of the components of the first collecting module 40 and the second collecting module 50, so that part of the components in the receiving cavity 23 is insulated from the outside, preventing the current collecting device 900 from being affected by external circuits during use.

[0056] In some embodiments, as shown in FIGS. 1-5, the housing 20 comprises a housing body 21 and a cover plate 22 arranged on the housing body 21, the housing body 21 and the cover plate 22 form the receiving cavity 23 therebetween, the housing body 21 is formed with a first channel 62, the cover plate 22 is formed with a second channel 61 corresponding to the first channel 62, and the first channel 62 and the second channel 61 are in communication to form the through cavity 60.

[0057] In the above-mentioned embodiments, the housing 20 is composed of the housing body 21 and the cover plate 22, and the cover plate 22 is detachably buckled on the housing body 21, facilitating the disassembly of the current collecting device 900.

[0058] In some embodiments, as shown in FIGS. 2, 3 and 5, the housing body 21 comprises an outer frame 211, an annular frame 212 arranged inside the outer frame 211 and having a lateral opening 200, and a support 213 arranged between the annular frame 212 and the outer frame 211. The inner cavity of the annular frame 212 forms the first channel 62, the outer side wall of the annular frame 212, the inner side wall of the outer frame 211 and the cover plate 22 form the receiving cavity 23, and the support 213 is used to support the circuit board 30 and the magnetic core assembly 42.

[0059] The side of the outer frame 211 and the side of the annular frame 212 facing the cover plate 22 are sealingly connected to the cover plate 22, respectively, for isolating the receiving cavity 23 from the outside, so as to insulate the components arranged in the receiving cavity 23 from the outside.

[0060] In some embodiments, sealing glue can be applied to the side of the outer frame 211 and the side of the annular frame 212 facing the cover plate 22, and then the side of the outer frame 211 and the side of the annular frame 212 facing the cover plate 22 are adhered to the cover plate 22 through the sealing glue.

[0061] In some embodiments, as shown in FIG. 2, FIG. 3 and FIG. 5, the bracket 213 comprises a first limiting assembly 2131, the first limiting assembly 2131 comprises two first limiting portions 2131a spaced apart along the first direction X, and a first gap 300 corresponding to the lateral opening 200 is formed between the two first limiting portions 2131a, the circuit board 30 is arranged through the lateral opening 200 and the first gap 300, so as to limit the relative position between the circuit board 30 and the shell body 21 in the first direction X.

[0062] In the above-mentioned embodiments, the circuit board 30 is arranged through the lateral opening 200 and the first gap 300, so that the circuit board 30 is clamped in the lateral opening 200 and the first gap 300 in the first direction X, thereby being able to limit the relative position between the circuit board 30 and the shell body 21 in the first direction X.

[0063] In some embodiments, as shown in FIG. 1 and FIG. 3, the inner side wall of the outer frame 211 is provided with a second limiting assembly 80, the second limiting assembly 80 is located on the side of the first limiting assembly 2131 away from the annular frame 212, the second limiting assembly 80 comprises two second limiting portions 81 spaced apart along the first direction X, and a second gap 400 corresponding to the first gap 300 is formed between the two second limiting portions 81, and the circuit board 30 is arranged through the second gap 400.

[0064] In the above-mentioned embodiments, the second limiting assembly 80 can provide more stable support for the circuit board 30. The distance between the second limiting assembly 80 and the first limiting assembly 2131 can be set according to the size of the circuit board 30 to meet the demand for stable support of the circuit board 30.

[0065] In some embodiments, as shown in FIG. 5, the first limiting assembly 2131 and the second limiting assembly 80 have a spacing area 231, when the circuit board 30 is arranged through the lateral opening 200 of the annular frame 212, the first gap 300 between the two first limiting portions 2131a, and the second gap 400 between the two second limiting portions 81, the Hall element 410 arranged on the circuit board 30 can be located in the spacing area 231, that is, the spacing area 231 can be used to accommodate the Hall element 410. In order to facilitate the installation of the magnetic core assembly 42, the magnetic flux area 1000 between the magnetic core assemblies 42 can correspond to the Hall element 410.

[0066] In some embodiments, two first limiting parts 2131a are respectively connected to the annular frame 212, and the two first limiting parts 2131a and the annular frame 212 enclose the slot 800. The cover plate 22 is provided with a plug 600 matched with the slot 800, the plug 600 includes a clamping groove part 601, the plug 600 is inserted into the slot 800, so that the circuit board 30 is arranged in the clamping groove part 601, and the circuit board 30 is clamped between the plug 600 and the bottom plate 214 of the shell body 21 in the second direction Y, so as to limit the relative position between the circuit board 30 and the shell body 21 in the second direction Y by the plug 600 and the shell body 21.

[0067] In the above-mentioned embodiments, the two first limiting parts 2131a can be integrally formed with the annular frame 212.

[0068] In addition, the cooperation between the plug 600 and the slot 800 can be used for positioning when the cover plate 22 is installed on the shell body 21.

[0069] In some embodiments, as shown in FIGS. 2, 3 and 5, the connector 31 includes a connector base 311 arranged on the circuit board 30, and a third limiting part 91 arranged on the outer frame 211 and matched with the connector base 311, for limiting the relative position between the circuit board 30 and the shell body 21 in the third direction Z. Wherein, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0070] In the above-mentioned embodiments, the connector base 311 is fixedly connected to the circuit board 30, and the third limiting assembly 90 includes two third limiting parts 91 arranged on the outer frame 211 and spaced apart in the third direction Z, when the circuit board 30 is installed on the shell body 21, the connector base 311 is located between the two third limiting parts 91, so that the connector base 311 is clamped between the two third limiting parts 91, for limiting the connector base 311, and further limiting the relative position between the circuit board 30 and the shell body 21 in the third direction Z.

[0071] As can be seen from the above, the relative position between the circuit board 30 and the shell body 21 in the first direction X can be limited by the annular frame 212, the first limiting assembly 2131 and the second limiting assembly 80; the relative position between the circuit board 30 and the shell body 21 in the second direction Y can be limited by clamping the circuit board 30 between the plug 600 arranged on the cover plate 22 and the shell body 21 in the second direction Y; the relative position between the circuit board 30 and the shell body 21 in the third direction Z can be limited by the cooperation between the third limiting part 91 and the connector base 311. Through the above arrangement, the circuit board 30 is fixedly installed on the shell body 20, and the relative position between the conductive part 10 fixedly connected to the circuit board 30 and the shell body 20 can also be further limited.

[0072] In some embodiments, as shown in FIG. 1, FIG. 2, FIG. 5 and FIG. 6, the connector 31 further comprises a PIN pin assembly 312 which is plugged into the connector base 311, the Hall element 410 and the shunt resistor 500 are electrically connected to the connector base 311, and the PIN pin assembly 312 is used for signal interaction with external devices to read the first current signal collected by the Hall element 410 and the second current signal collected by the shunt resistor 500.

[0073] As shown in FIG. 2 and FIG. 6, the PIN pin assembly 312 can include two rows of PIN pins arranged at intervals along the third direction Z, wherein the first current signal collected by the Hall element 410 can be read through the PIN pins in one row of the PIN pin assembly 312 which is close to the Hall element 410 in the third direction Z, and the second current signal collected by the shunt resistor 500 can be read through the PIN pins in one row of the PIN pin assembly 312 which is away from the Hall element 410 in the third direction Z.

[0074] In other possible embodiments, the circuit board 30 can be powered through the connector 31, which will not be described here.

[0075] In some embodiments, the bracket 213 includes a plurality of fourth limiting portions 2132 surrounding the annular frame 212 and a plurality of fifth limiting portions 2133 provided on the side wall of the shell body 21, and the magnetic core assembly 42 is sleeved on the plurality of fourth limiting portions 2132, so that the plurality of fourth limiting portions 2132 abut against the inner wall of the magnetic core assembly 42 and the plurality of fifth limiting portions 2133 abut against the outer wall of the magnetic core assembly 42, for limiting the relative position between the magnetic core assembly 42 and the shell body 21 in the first direction X and the third direction Z.

[0076] In the above-mentioned embodiments, the plurality of fourth limiting portions 2132 can be respectively arranged on both sides of the annular frame 212 in the first direction X, and the plurality of fourth limiting portions 2132 on both sides of the annular frame 212 in the first direction X are arranged one by one, so that the magnetic core assembly 42 is more stably clamped on the plurality of fourth limiting portions 2132, and then the plurality of fifth limiting portions 2133 provided on the outer frame 211 abut against the outer wall of the magnetic core assembly 42, for limiting the relative position between the magnetic core assembly 42 and the shell body 21 in the first direction X and the third direction Z.

[0077] In addition, as shown in FIG. 2 and FIG. 5, a groove matching the fifth limiting portion 2133 can be formed on the magnetic core assembly 42, and part of the fifth limiting portion 2133 can be located in the groove, so as to better limit the relative position of the magnetic core assembly 42 relative to the shell body 21. It should be noted that the groove can also be used in cooperation with part of the fifth limiting portion 2133 for positioning during installation of the magnetic core assembly 42.

[0078] In some embodiments, as shown in FIGS. 1-5, the shell body 21 is provided with a protrusion 100 in the accommodating cavity 23, one side of the magnetic core assembly 42 in the second direction Y abuts against the protrusion 100; the cover plate 22 is provided with a top protrusion 700 matched with the protrusion 100, the other side of the magnetic core assembly 42 in the second direction Y abuts against the top protrusion 700, so that the magnetic core assembly 42 is clamped between the protrusion 100 and the top protrusion 700 in the second direction Y.

[0079] In the above embodiments, the protrusion 100 can be multiple, the multiple protrusions 100 can be arranged in the accommodating cavity 23 around the annular frame 212, the protrusions 100 can be arranged by the annular frame 212 extending towards the outer frame 211, and the multiple protrusions 100 can also make the magnetic core assembly 42 clamped more stably. In addition, the top protrusion 700 arranged on the cover plate 22 can be configured as an "L" shape, and the number of the top protrusions 700 can be two, the two top protrusions 700 are respectively located on both sides of the cover plate 22 in the first direction X of the second passage 61, which can also make the magnetic core assembly 42 clamped more stably between the protrusions 100 on the shell body 21 and the top protrusions 700 on the cover plate 22.

[0080] As can be seen from the above, through the fourth limiting portion 2132 and the fifth limiting portion 2133, the positions of the magnetic core assembly 42 and the shell body 21 in the first direction X and the third direction Z can be limited; through the protrusion 100 and the top protrusion 700, the positions of the magnetic core assembly 42 and the shell body 21 in the second direction Y can be limited, and through the above arrangement, the magnetic core assembly 42 can be fixedly installed on the shell 20.

[0081] It should be understood that when the magnetic core assembly 42 is installed on the shell 20, the magnetic core assembly 42 is located in the accommodating cavity 23, and the Hall element 410 arranged on the circuit board 30 can be located in the magnetic flux region 1000 between the first end 421 and the second end 422 of the magnetic core assembly 42. Here, no further description is given.

[0082] In addition, the shunt resistor 500 arranged on the circuit board 30 is located in the through cavity 60, and the shell 20 separates the magnetic core assembly 42 from the shunt resistor 500, which can further avoid the influence of the magnetic core assembly 42 on the shunt resistor 500.

[0083] In some embodiments, as shown in FIGS. 1 and 6, the conductive part 10 is formed with a first fixing hole 12, the shell 20 includes a fixing frame 24 with a second fixing hole 241, the fixing frame 24 is connected to the first fixing hole 12 of the conductive part 10 by a fastener 70 penetrating the second fixing hole 241, so as to fixedly connect the conductive part 10 and the fixing frame 24, and then fixedly connect the conductive part 10 and the shell 20.

[0084] In the above embodiment, the fastener 70 can adopt a bolt 71 and a nut 72, and the conductive member 10 is fixed to the fixing frame 24 of the shell 20 through the bolt 71 and the nut 72.

[0085] In addition, the conductive member 10 is fixedly connected with the circuit board 30, and the relative position between the conductive member 10 and the circuit board 30 fixedly connected with the conductive member 10 and the shell 20 can be further defined through the fastener 70.

[0086] In some embodiments, in order to facilitate the connection of the conductive member 10 to the circuit to be detected, a mounting hole 11 is arranged on the conductive member 10, and the conductive member 10 can be connected to the circuit to be detected through the mounting hole 11 and a screw matched with the mounting hole 11, which will not be described here.

[0087] The second aspect of the present disclosure provides a distribution box 2000, as shown in FIG. 7, which comprises the current collection device 900 provided by the first aspect of the present disclosure.

[0088] The third aspect of the present disclosure provides a power utilization device 3000, which comprises the current collection device 900 provided by the first aspect of the present disclosure and / or the distribution box 2000 provided by the second aspect of the present disclosure. As shown in FIG. 8, the power utilization device 3000 comprises the distribution box 2000, and the power utilization device 3000 can be a vehicle, a ship, a spacecraft, etc. When the power utilization device 3000 is a vehicle, the vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The embodiments of the present disclosure do not specially limit the above power utilization device.

[0089] The preferred embodiments of the present disclosure are described in detail above in combination with the drawings, but the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0090] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present disclosure will not further describe various possible combination manners.

[0091] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not deviate from the idea of the present disclosure, and it should also be considered as the disclosed content of the present disclosure.

Claims

1. A current harvesting device, characterized by, The current acquisition device comprises: a conductive piece (10); a circuit board (30) comprising a connector (31); a first acquisition module (40) comprising an acquisition piece (41) arranged on the circuit board (30) and electrically connected to the connector (31), the first acquisition module (40) being configured to detect a first current signal of the conductive piece (10); and a second acquisition module (50) arranged on the circuit board (30) and electrically connected to the connector (31), the second acquisition module (50) being configured to detect a second current signal of the conductive piece (10).

2. The current harvesting device of claim 1, wherein, The acquisition piece (41) is configured as a Hall element (410); The first acquisition module (40) further comprises a magnetic core assembly (42), the magnetic core assembly (42) being sleeved around the circumference of the conductive piece (10), and the magnetic core assembly (42) comprising a first end (421) and a second end (422), the Hall element (410) being arranged in a magnetic flux region (1000) between the first end (421) and the second end (422).

3. The current harvesting device of claim 2, wherein, The second acquisition module (50) is configured as a shunt resistor (500), the shunt resistor (500) being connected in parallel to the conductive piece (10).

4. The current harvesting device of claim 3, wherein, The projection of the shunt resistor (500) on the circuit board (30) is arranged in a spaced manner with the projection of the magnetic core assembly (42) on the circuit board (30).

5. The current harvesting device of any one of claims 2 to 4, wherein, The current acquisition device further comprises a housing (20), the housing (20) being formed with a through cavity (60) penetrating through itself and a containing cavity (23) surrounding the through cavity (60), the conductive piece (10) being arranged in the through cavity (60), part of the circuit board (30) being arranged in the containing cavity (23), and part of the circuit board (30) extending into the through cavity (60) and being fixedly connected with the conductive piece (10).

6. The current harvesting device of claim 5, wherein, The housing (20) comprises a housing body (21) and a cover plate (22) arranged on the housing body (21), the containing cavity (23) being formed between the housing body (21) and the cover plate (22), a first channel (62) being formed on the housing body (21), a second channel (61) corresponding to the first channel (62) being formed on the cover plate (22), the first channel (62) and the second channel (61) being in communication to form the through cavity (60).

7. The current harvesting device of claim 6, wherein, The housing body (21) comprises an outer frame (211), an annular frame (212) arranged inside the outer frame (211), and a support (213) arranged between the annular frame (212) and the outer frame (211); The inner cavity of the annular frame (212) forms the first channel (62), the outer side wall of the annular frame (212), the inner side wall of the outer frame (211), and the cover plate (22) form the containing cavity (23), and the support (213) is configured to support the circuit board (30) and the magnetic core assembly (42).

8. The current harvesting device of claim 7, wherein, The outer frame (211) and the annular frame (212) are sealingly connected to the cover plate (22) on the side facing the cover plate (22).

9. The current harvesting device of claim 7 or 8, wherein, The annular frame (212) has a lateral opening (200), the support (213) comprises a first limiting assembly (2131), the first limiting assembly (2131) comprises two first limiting parts (2131a) arranged at intervals in a first direction (X), a first gap (300) corresponding to the lateral opening (200) is formed between the two first limiting parts (2131a), and the circuit board (30) is arranged through the lateral opening (200) and the first gap (300), so as to limit the relative position between the circuit board (30) and the shell body (21) in the first direction (X).

10. The current harvesting device of claim 9, wherein, A second limiting assembly (80) is arranged on the inner side wall of the outer frame (211), the second limiting assembly (80) is located on the side of the first limiting assembly (2131) away from the annular frame (212), the second limiting assembly (80) comprises two second limiting parts (81) arranged at intervals in the first direction (X), a second gap (400) corresponding to the first gap (300) is formed between the two second limiting parts (81), and the circuit board (30) is arranged through the second gap (400).

11. The current harvesting device of claim 10, wherein, The first limiting assembly (2131) and the second limiting assembly (80) have a spacing area (231) for accommodating the Hall element (410).

12. The current harvesting device of any one of claims 9 to 11, wherein, The two first limiting parts (2131a) are respectively connected to the annular frame (212), and the two first limiting parts (2131a) and the annular frame (212) form a slot (800); The cover plate (22) is provided with a plug (600) matched with the slot (800), the plug (600) comprises a clamping groove part (601), the plug (600) is inserted into the slot (800), so that the circuit board (30) is arranged through the clamping groove part (601), and the circuit board (30) is clamped between the plug (600) and the bottom plate (214) of the shell body (21) in a second direction (Y).

13. The current harvesting device of claim 12, wherein, The connector (31) comprises a connector base (311) arranged on the circuit board (30), a third limiting part (91) is arranged on the outer frame (211), the third limiting part (91) cooperates with the base of the connector (31), so as to limit the relative position between the circuit board (30) and the shell body (21) in a third direction (Z), and the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other.

14. The current harvesting device of any one of claims 7 to 13, wherein, The support (213) comprises a plurality of fourth limiting parts (2132) surrounding the annular frame (212) and a plurality of fifth limiting parts (2133) arranged on the side wall of the shell body (21), the magnetic core assembly (42) is sleeved on the plurality of fourth limiting parts (2132), so that the plurality of fourth limiting parts (2132) abut against the inner wall of the magnetic core assembly (42) and the plurality of fifth limiting parts (2133) abut against the outer wall of the magnetic core assembly (42).

15. The current harvesting device of any one of claims 6 to 14, wherein, The shell body (21) is provided with a convex rib (100) located in the accommodating cavity (23), one side of the magnetic core assembly (42) in a second direction (Y) abuts against the convex rib (100); The cover plate (22) is provided with a top rib (700) matched with the convex rib (100), the other side of the magnetic core assembly (42) in the second direction (Y) abuts against the top rib (700), so that the magnetic core assembly (42) is clamped between the convex rib (100) and the top rib (700) in the second direction (Y).

16. The current harvesting device of any one of claims 5 to 15, wherein, The conductive part (10) is formed with a first fixing hole (12), the shell (20) comprises a fixing frame (24) with a second fixing hole (241), the fixing frame (24) is connected to the first fixing hole (12) of the conductive part (10) through a fastener (70) penetrating the second fixing hole (241), so as to fixedly connect the conductive part (10) and the fixing frame (24).

17. A distribution box, characterized by An electrical current collection device (900) as claimed in any one of claims 1 to 16.

18. An electrical device, characterized by An electrical current collection device (900) as claimed in any one of claims 1 to 16 and / or a distribution box (2000) as claimed in claim 17.

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