Integrated current detection device
By integrating a shunt and a Hall current sensor, the current detection device solves the problems of difficult installation and large space occupation in electrical equipment, achieving efficient current detection and reducing cost and complexity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-24
AI Technical Summary
In electrical equipment with high safety levels, shunts and current sensors are difficult to install and occupy a lot of space. Furthermore, the core size of existing current sensors is affected by the width of the copper busbar, resulting in weak anti-saturation capability and limited detection range.
An integrated current detection device is adopted, which integrates the shunt and the Hall current sensor together. Current detection is achieved through the current guiding component and the connecting device. The Hall current sensor is sleeved on the shunt section, and the current is detected by the Hall chip. The electrical signal is converted by the circuit board, which reduces the size requirement of the Hall current sensor.
It effectively reduces the overall space occupied by the equipment, lowers the complexity and cost of the wiring layout, and improves the accuracy and range of current detection.
Smart Images
Figure CN224035490U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of current detection, in particular to an integrated current detection device. BACKGROUND
[0002] At present, shunt, current sensor and other devices are often configured inside electrical equipment with high safety level to detect current in sequence to ensure the reliability of detection data. However, many electrical equipment with high safety level often do not have sufficient installation space, and it is difficult to install shunt, current sensor and the line between them in limited space. In addition, shunt and current sensor are separately arranged, and the copper bars of each of them make the overall space occupied larger.
[0003] Generally, the magnetic core of the current sensor is sleeved on the entire copper bar, and the current sensor directly detects the current flowing through the entire copper bar. Obviously, the size of the current sensor is affected by the width of the copper bar, that is, the wider the copper bar, the larger the size of the magnetic core, and the larger the size of the current sensor. In order to consider the space problem, if a current sensor with a smaller magnetic core is selected, the anti-saturation ability of the corresponding magnetic core is weaker, and the current detection range is smaller, which may not meet the use requirement. CONTENT OF THE UTILITY MODEL
[0004] To solve the above technical problems and achieve at least one advantage of the present application, the present application provides an integrated current detection device, which comprises:
[0005] A shunt, the shunt comprises:
[0006] A current guide assembly, the current guide assembly comprises two wire bodies and a voltage reducer, the voltage reducer is installed between the two wire bodies, the two wire bodies can be wired so that the current is input from one of the wire bodies, flows to the voltage reducer and is output from the other wire body, the voltage reducer is implemented by a conductive material with a constant resistance value, and the resistance value of the voltage reducer is greater than the resistance value of the wire body, either of the two wire bodies forms a clamping groove, the area of the wire body forming the clamping groove is divided into two shunt parts by the clamping groove, and the current flowing through the wire body can be shunted to flow through the two shunt parts during the current transmission, and the cross-sectional dimensions of the two shunt parts in the current flow direction are set in proportion;
[0007] A connecting device, the connecting device is arranged on the surface of the voltage reducer, and the connecting device is used for detecting the current flowing through the current guide assembly;
[0008] A Hall current sensor, the Hall current sensor is sleeved on one of the shunt parts in a manner of partially being placed in the clamping groove, and the Hall current sensor detects the current flowing through the corresponding shunt part.
[0009] According to an embodiment of the present application, the voltage reducer is implemented as a manganese-copper alloy material.
[0010] According to an embodiment of the present application, the connecting device comprises a circuit board I and a current-voltage conversion module, the current-voltage conversion module is installed on the circuit board I and electrically connected with the voltage reducer to convert the voltage drop generated across the voltage reducer into current and detect the corresponding current value.
[0011] According to an embodiment of the present application, the connecting device further comprises a shunt connector, the shunt connector is installed on the circuit board I and electrically connected with the current-voltage conversion module, and the shunt connector is used to output detection data.
[0012] According to an embodiment of the present application, the Hall current sensor comprises a mounting shell and a magnetic core, the mounting shell is implemented as an insulating material, the magnetic core is installed in the mounting shell, the magnetic core has a through hole and a side opening in communication with the through hole, the side opening is located on the side of the magnetic core and the direction in which the side opening extends towards the through hole is perpendicular to the depth direction of the through hole, when the Hall current sensor is sleeved with a shunt part, the corresponding shunt part is located in the through hole, the Hall current sensor further comprises a Hall chip, the Hall chip is installed in the mounting shell and at least partially retained in the side opening, and the Hall chip detects the current of the shunt part sleeved with the magnetic core.
[0013] According to an embodiment of the present application, the mounting shell comprises a shell main body and a pressing member, the magnetic core is installed in the shell main body, a part of the shell main body is recessed in the through hole to form an installation groove in the through hole, the Hall chip is inserted in the installation groove, and the pressing member is located on the side of the Hall chip away from the shell main body and is detachably installed on the shell main body.
[0014] According to an embodiment of the present application, the shell main body has two spaced apart assembly structures, the pressing member has two corresponding counter assembly structures, and the pressing member is assembled on the shell main body through the cooperation of each counter assembly structure and a corresponding assembly structure.
[0015] According to an embodiment of the present application, the counter assembly structure is implemented as a bayonet, the part of the bayonet formed by the pressing member can elastically deform, the assembly structure is implemented as a clamping block, and the cross-sectional size of the clamping block gradually increases along the direction in which the side opening extends towards the through hole.
[0016] According to an embodiment of the present application, the Hall chip comprises a chip body and a plurality of chip pins, the chip pins are mounted on the chip body, the chip body is inserted into the mounting slot, the Hall current sensor comprises a second circuit board, the shell body further has a Hall connector, the Hall connector has a plurality of connector pins, the connector pins and the chip pins all penetrate through the second circuit board and are electrically connected with the second circuit board, and the Hall connector is used for outputting detection data.
[0017] According to an embodiment of the present application, each of the wire connecting bodies is formed with a wire connecting hole at an end portion away from the pressure reducing member, and the wire connecting hole is used for wire connection. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 A structural schematic diagram of the integrated current detection device is shown.
[0019] Figure 2 A structural schematic diagram of the flow guide assembly is shown.
[0020] Figure 3 A structural sectional view of the integrated current detection device is shown.
[0021] Figure 4 A structural schematic diagram of the magnetic core is shown.
[0022] Figure 5 A partial structural exploded view of the Hall current sensor is shown. DETAILED DESCRIPTION
[0023] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments described below are only examples of the present application, and other obvious modifications are possible to those skilled in the art. The principles defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.
[0024] Those skilled in the art should understand that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.
[0025] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.
[0026] Reference Figures 1 to 2 According to a preferred embodiment of the present application, an integrated current detection device will be described in detail below, which includes a shunt 10, the shunt 10 includes a current conducting assembly 11, the current conducting assembly 11 includes two wire bodies 111 and a voltage drop component 112, the voltage drop component 112 is installed between the two wire bodies 111. Both of the wire bodies 111 can be wired to allow current to flow from one of the wire bodies 111 to the voltage drop component 112 and to be output from the other wire body 111. The voltage drop component 112 is implemented as a constant resistance value of conductive material, and the resistance value of the voltage drop component 112 is greater than the resistance value of the wire body 111, so as to generate a voltage drop across the voltage drop component 112 when current flows through it.
[0027] Preferably, the voltage drop component 112 is implemented as a manganese-copper alloy material.
[0028] Preferably, the wire body 111 and the voltage drop component 112 are welded together.
[0029] The shunt 10 includes a connection device 12, the connection device 12 is arranged on the surface of the voltage drop component 112, and the connection device 12 is used to detect the current flowing through the current conducting assembly 11.
[0030] Reference Figure 1 The connection device 12 includes a circuit board 121 and a pressure flow conversion module 122, the pressure flow conversion module 122 is installed on the circuit board 121 and is electrically connected with the voltage drop component 112 to convert the voltage drop across the voltage drop component 112 into current and detect it to obtain the corresponding current value, thereby detecting the current flowing through the current conducting assembly 11.
[0031] Preferably, the pressure flow conversion module 122 is implemented as an analog-to-digital converter.
[0032] The connection device 12 further includes a shunt connector 123, the shunt connector 123 is installed on the circuit board 121 and is electrically connected with the pressure flow conversion module 122, and the shunt connector 123 is used to output detection data.
[0033] Reference Figures 2 to 3, it is worth mentioning that any of the two connection bodies 111 forms a card slot 11101, the area where the connection body 111 forms the card slot 11101 is divided into two shunt parts 1111 by the card slot 11101, and the current can be shunted by the card slot 11101 when it is transmitted through the two shunt parts 1111. The cross-sectional size of the two shunt parts 1111 in the current flow direction is proportionally arranged.
[0034] Preferably, any of the two connection bodies 111 is divided to form the card slot 11101 and obtain the two shunt parts 1111.
[0035] The integrated current detection device includes a Hall current sensor 20, the Hall current sensor 20 is sleeved on a shunt part 1111 in a manner of partially placed in the card slot 11101, the Hall current sensor 20 detects the current flowing through the corresponding shunt part 1111, and the current flowing through the connection body 111 is calculated according to Ohm's law based on the cross-sectional size proportion of the two shunt parts 1111 in the current flow direction.
[0036] In this way, the overall current can be obtained by detecting the branch current, the size requirement of the Hall current sensor 20 required for detection is reduced, and the use cost is effectively reduced. In addition, by integrating the shunt 10 and the Hall current sensor 20, compared with the prior art, the overall occupied space is effectively reduced, the complexity of line arrangement is reduced, and the equipment cost is reduced.
[0037] Reference Figures 3 to 5 The Hall current sensor 20 includes a mounting shell 21 and a magnetic core 22, the mounting shell 21 is implemented as an insulating material, and the magnetic core 22 is installed in the mounting shell 21. The magnetic core 22 has a through hole 2201 and a side opening 2202 communicating with the through hole 2201, the side opening 2202 is located on the side of the magnetic core 22, and the direction in which the side opening 2202 extends to the through hole 2201 is perpendicular to the depth direction of the through hole 2201. When the Hall current sensor 20 is sleeved on a shunt part 1111, the corresponding shunt part 1111 is located in the through hole 2201. The Hall current sensor 20 further includes a Hall chip 23, the Hall chip 23 is installed in the mounting shell 21 and at least partially remains in the side opening 2202, and the Hall chip 23 detects the current of the shunt part 1111 sleeved on the magnetic core 22.
[0038] The mounting shell 21 comprises a shell main body 211 and a press-fitting member 212, the magnetic core 22 is mounted in the shell main body 211, the shell main body 211 is partially recessed in the through hole 2201 to form a mounting slot 21101 in the through hole 2201, and the Hall chip 23 is inserted into the mounting slot 21101. The press-fitting member 212 is located on the side of the Hall chip 23 away from the shell main body 211 and is detachably mounted on the shell main body 211 to limit the Hall chip 23 in the mounting slot 21101.
[0039] Preferably, the shell main body 211 has two spaced apart assembly structures 2111, the press-fitting member 212 has two corresponding counter-assembly structures 2121, and the press-fitting member 212 is assembled on the shell main body 211 by the cooperation of each counter-assembly structure 2121 and the assembly structure 2111.
[0040] Preferably, the counter-assembly structure 2121 is implemented as a bayonet, the part of the press-fitting member 212 forming the bayonet can be elastically deformed, the assembly structure 2111 is implemented as a clamping block, and the cross-sectional size of the clamping block gradually increases in the direction extending from the side opening 2202 to the through hole 2201. During the assembly of the press-fitting member 212 on the shell main body 211, the part of the press-fitting member 212 forming the bayonet is deformed by the blocking action of the clamping block while sliding on the surface of the clamping block until the bayonet corresponds to the clamping block, at which time the clamping block is clamped in the bayonet to firmly assemble the press-fitting member 212 on the shell main body 211.
[0041] Referring to Figure 3 and Figure 5 , the Hall chip 23 comprises a chip main body 231 and a plurality of chip pins 232, the chip pins 232 are mounted on the chip main body 231, and the chip main body 231 is inserted into the mounting slot 21101. The Hall current sensor 20 comprises a circuit board 24, the shell main body 211 further has a Hall connector 2112, the Hall connector 2112 has a plurality of connector pins 21121, the connector pins 21121 and the chip pins 232 all penetrate the circuit board 24 and are electrically connected to the circuit board 24, and the Hall connector 2112 is used to output detection data.
[0042] Referring to Figures 1 to 2 , preferably, each end of the wiring body 111 away from the voltage reducing member 112 forms a wiring hole 11102, and the wiring hole 11102 is used for wiring.
[0043] Those skilled in the art will understand that the above description and the accompanying drawings are only examples of the embodiments of the present application and do not limit the present application. The advantages of the present application have been fully and effectively achieved. The functional and structural principles of the present application have been shown and described in the embodiments, and the embodiments of the present application can be modified or changed in any way without departing from the principles.
Claims
1. An integrated current sensing device, characterized by, The integrated current detection device comprises: a shunt comprising: a current guide assembly comprising two wire bodies and a voltage drop component installed between the two wire bodies, the two wire bodies are capable of being wired to allow current to flow from one of the wire bodies to the voltage drop component and to be output from the other wire body, the voltage drop component is implemented as a constant resistance value conductive material, and the resistance value of the voltage drop component is greater than the resistance value of the wire bodies, either of the two wire bodies forms a clamping groove, the area of the wire body forming the clamping groove is divided into two shunt parts by the clamping groove, and the current flowing through the wire body can be shunted to flow through the two shunt parts during the current transmission, the cross-sectional dimensions of the two shunt parts in the direction of current flow are proportionally arranged; a connecting device provided on the surface of the voltage drop component, the connecting device is used to detect the current flowing through the current guide assembly; a Hall current sensor partially inserted into one of the shunt parts, the Hall current sensor detects the current flowing through the corresponding shunt part.
2. The integrated current detection device according to claim 1, wherein The voltage drop component is implemented as a manganese-copper alloy material.
3. The integrated current detection device according to claim 1 or 2, wherein The connecting device comprises a circuit board and a pressure-to-current conversion module, the pressure-to-current conversion module is installed on the circuit board and electrically connected with the voltage drop component to convert the voltage drop generated across the voltage drop component into current and detect the corresponding current value.
4. The integrated current sensing device of claim 3, wherein, The connecting device further comprises a shunt connector installed on the circuit board and electrically connected with the pressure-to-current conversion module, the shunt connector is used to output detection data.
5. The integrated current sensing device of claim 1, wherein The Hall current sensor comprises a mounting shell and a magnetic core, the mounting shell is implemented as an insulating material, the magnetic core is installed in the mounting shell, the magnetic core has a through hole and a side opening in communication with the through hole, the side opening is located on the side of the magnetic core and the direction in which the side opening extends towards the through hole is perpendicular to the depth direction of the through hole, when the Hall current sensor is inserted into one of the shunt parts, the corresponding shunt part is located in the through hole, the Hall current sensor further comprises a Hall chip, the Hall chip is installed in the mounting shell and at least partially retained in the side opening, the Hall chip detects the current of the shunt part inserted into the magnetic core.
6. The integrated current sensing device of claim 5, wherein, The mounting shell comprises a shell main body and a pressing member, the magnetic core is installed in the shell main body, the shell main body is partially recessed into the through hole to form an installation groove in the through hole, the Hall chip is clamped and inserted into the installation groove, and the pressing member is located on the side of the Hall chip away from the shell main body and is detachably installed on the shell main body.
7. The integrated current sensing device of claim 6, wherein, The shell main body has two spaced apart assembly structures, the pressing member has two corresponding counter assembly structures, and the pressing member is assembled on the shell main body through the cooperation of each counter assembly structure and the corresponding assembly structure.
8. The integrated current sensing device of claim 7, wherein, The matching structure is implemented as a socket, a part of the pressing piece forming the socket can be elastically deformed, the assembly structure is implemented as a clamping block, the cross-sectional size of the clamping block gradually increases in the direction extending to the through hole along the side opening.
9. The integrated current sensing device of claim 6, wherein, The Hall chip includes a chip body and a plurality of chip pins mounted on the chip body, the chip body is inserted into the mounting slot, the Hall current sensor includes a second circuit board, the shell body further has a Hall joint with a plurality of joint pins, the joint pins and the chip pins all penetrate through the second circuit board and are electrically connected with the second circuit board, and the Hall joint is used for outputting detection data.
10. The integrated current sensing device of claim 1, wherein, An end of each of the wiring bodies away from the pressure reducing piece is formed with a wiring hole for wiring.