CN214225264U

CN214225264U - Large-current sensor structure

Info

Publication number: CN214225264U
Application number: CN202120212307.3U
Authority: CN
Inventors: 严学军
Original assignee: Yunmao Electronics Nantong Co ltd
Current assignee: Yunmao Electronics Nantong Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-09-17
Anticipated expiration: 2031-01-26

Abstract

The utility model relates to a current sensor technical field discloses a large current sensor structure, and it includes the plastic-sealed body, the inside fixed mounting of plastic-sealed body has magnetic core and hall element, the hall element outside is located in fixed wrapping up in of magnetic core, fixed mounting has pin A on the plastic-sealed body, pin A runs through in the magnetic core inboard, and pin A is located the hall element rear side, pin A both ends all run through in the plastic-sealed body to extend to the plastic-sealed external portion, magnetic core front end fixed mounting has three signal foot, and is three signal foot front end all runs through in the plastic-sealed body, and extends to plastic-sealed body front side. The utility model provides a traditional mutual-inductor bulky, special occasion can't use, problem that assembly efficiency is low to adopt integrated circuit manufacturing process, the reliability is high, and the uniformity is good, and stress is low, and the isolation is high, and the structure is small, and sensitivity and response speed are fast, the installation of being convenient for.

Description

Large-current sensor structure

Technical Field

The utility model relates to a current sensor technical field especially relates to a heavy current sensor structure.

Background

Small power supply devices have merged more and more new technologies. Such as switching power supplies, hard switching, soft switching, voltage regulation, linear feedback regulation, magnetic amplifier technology, digitally controlled voltage regulation, PWM, SPWM, electromagnetic compatibility, and the like. The actual demand directly promotes the continuous development and progress of power supply technology, in order to automatically detect and display current and have automatic protection function and higher intelligent control when dangerous conditions such as overcurrent and overvoltage occur, the power supply technology with sensing detection, sensing sampling and sensing protection gradually becomes a trend, and sensors for detecting current or voltage are produced and are gradually favored by vast power supply designers in China. The traditional mutual inductor has the advantages of large volume, poor reliability, low assembly efficiency and incapability of being used in occasions with small space, and further provides an integrated circuit large-current sensor structure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of heavy current sensor structure has solved the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a large current sensor structure, includes the plastic-sealed body, the internal fixed mounting of plastic-sealed has magnetic core and hall element, the hall element outside is located to fixed the wrapping up in of magnetic core, fixed mounting has pin A on the plastic-sealed body, pin A runs through in the magnetic core inboard, and pin A is located the hall element rear side, pin A both ends all run through in the plastic-sealed body to extend to the plastic-sealed external portion, magnetic core front end fixed mounting has three signal foot, and is three signal foot front end all runs through in the plastic-sealed body, and extends to plastic-sealed body front side.

Preferably, the three signal pins are electrically connected with the hall element.

Preferably, the two pins A are made of red copper.

Preferably, the magnetic core is made of silicon steel.

Preferably, the plastic package body is made of epoxy resin.

Preferably, the Hall element and the signal pin are made of low-carbon steel.

Preferably, the height of the magnetic core is 5mm, and the error is 0.02mm, and the width of the magnetic core is 5.2mm, and the error is 0.02 mm.

The utility model has the advantages that: the utility model provides a traditional mutual-inductor bulky, special occasion is unable to be used, problem that assembly efficiency is low to adopt integrated circuit manufacturing process, the reliability is high, and the uniformity is good, and stress is low, and the efficiency of all links improves, especially the scene that user circuit board space is little, the utility model discloses structural design has greatly reduced the size of final product, and this structural scheme provides high electric isolation characteristic (up to 5.5kv) and the ultralow former side electric conductor (≦ 0.1m omega), and especially adapted is used in various formula of cuting straightly or punching's current measurement, just like new energy automobile, arm, industrial control equipment, air conditioner etc, just the utility model discloses small structure, the structure is small, and sensitivity and response speed are fast, the installation of being convenient for.

The utility model provides a traditional mutual-inductor bulky, special occasion can't use, problem that assembly efficiency is low to adopt integrated circuit manufacturing process, the reliability is high, and the uniformity is good, and stress is low, and the isolation is high, and the structure is small, and sensitivity and response speed are fast, the installation of being convenient for.

Drawings

Fig. 1 is the structural schematic diagram of a large current sensor structure provided by the utility model.

Fig. 2 is a perspective view of a structure of a high current sensor according to the present invention.

Reference numbers in the figures: pin A1, magnetic core 2, plastic package body 3, Hall element 4, signal pin 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a large current sensor structure, including the plastic-sealed body 3, the inside fixed mounting of plastic-sealed body 3 has magnetic core 2 and hall element 4, hall element 4 outside is located in fixed the wrapping up in of magnetic core 2, fixed mounting has pin A1 on the plastic-sealed body 3, pin A1 runs through in the magnetic core 2 is inboard, and pin A1 is located hall element 4 rear side, pin A1 both ends all run through in the plastic-sealed body 3, and extend to the plastic-sealed body 3 outside, 2 front end fixed mounting of magnetic core have three

signal foot

5, 5 front ends of three signal foot all run through in the plastic-sealed body 3, and extend to 3 front sides of plastic-sealed body.

In this embodiment, the three signal pins 5 are all electrically connected to the hall element 4. The two pins A1 are made of red copper. The magnetic core 2 is made of silicon steel. The plastic package body 3 is made of epoxy resin. The Hall element 4 and the signal pin 5 are made of low-carbon steel. The height of the magnetic core 2 is 5mm, and the error is 0.02mm, and the width of the magnetic core 2 is 5.2mm, and the error is 0.02 mm.

The working principle is as follows: the primary current IP flows into pin a1 and along pin a1 to the inside of the magnetic core 2. the magnetic flux generated by the primary current IP is concentrated in the magnetic circuit by the magnetic core 2 and measured by the hall element 4, and the output of the hall element 4 is signal conditioned to provide an accurate representation of the primary current. The pin A1 is a carrier of a primary current IP; the magnetic flux generated by the primary current IP is gathered in the magnetic circuit by the magnetic core 2; the plastic package body 3 is used for encapsulating the pin A1, the magnetic core 2 and the Hall element 4 and can play an insulating role; the hall element 4 can measure the magnetic flux generated by the primary current IP in the magnetic core 2 to determine the magnitude of the primary current IP. The primary current IP enters the inside of the core 2 through pin a 1. The utility model provides a traditional mutual-inductor bulky, special occasion is unable to be used, problem that assembly efficiency is low to adopt integrated circuit manufacturing process, the reliability is high, and the uniformity is good, and stress is low, and the efficiency of all links improves, especially the scene that user circuit board space is little, the utility model discloses structural design has greatly reduced the size of final product, and this structural scheme provides high electric isolation characteristic (up to 5.5kv) and the ultralow former side electric conductor (≦ 0.1m omega), and especially adapted is used in various formula of cuting straightly or punching's current measurement, just like new energy automobile, arm, industrial control equipment, air conditioner etc, just the utility model discloses small structure, the structure is small, and sensitivity and response speed are fast, the installation of being convenient for.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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 should not be construed as limiting the present invention.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a large current sensor structure, includes the plastic-sealed body (3), its characterized in that, the inside fixed mounting of plastic-sealed body (3) has magnetic core (2) and hall element (4), hall element (4) outside is located in fixed the wrapping up in of magnetic core (2), fixed mounting has pin A (1) on the plastic-sealed body (3), pin A (1) runs through in magnetic core (2) inboard, and pin A (1) is located hall element (4) rear side, pin A (1) both ends all run through in plastic-sealed body (3) to extend to plastic-sealed body (3) outside, magnetic core (2) front end fixed mounting has three signal foot (5), and is three signal foot (5) front end all runs through in plastic-sealed body (3) to extend to plastic-sealed body (3) front side.

2. A high current sensor arrangement according to claim 1, wherein three of said signal pins (5) are electrically connected to the hall element (4).

3. A high current sensor structure according to claim 1, wherein the two pins a (1) are made of red copper.

4. A high current sensor arrangement according to claim 1, wherein said core (2) is made of silicon steel.

5. A high current sensor structure according to claim 1, wherein said plastic package body (3) is made of epoxy resin.

6. A high current sensor structure according to claim 1, wherein said hall element (4) and said signal pin (5) are made of low carbon steel.

7. A high current sensor arrangement according to claim 1, wherein said core (2) has a height of 5mm and a tolerance of 0.02mm, and said core (2) has a width of 5.2mm and a tolerance of 0.02 mm.