TWM624935U

TWM624935U - Current sensing device

Info

Publication number: TWM624935U
Application number: TW110214972U
Authority: TW
Inventors: 劉孟昌; 劉正彬
Original assignee: 致茂電子股份有限公司
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-03-21

Abstract

The present application discloses a current sensing device, which is used to couple in a power supply circuit through a first electrical connection portion and a second electrical connection portion, and to output a sensing result through a first measurement point and a second measurement point. The current sensing device comprises a first electrode, a second electrode, an insulator and a current shunt. The first electrode has a seat and a cylinder as the first electrical connection portion. The insulator has a channel for accommodating the cylinder. The second electrode is arranged at the front end of the insulator and has a through hole for the cylinder to protrude, and the outer surface of the second electrode serves as the second electrical connection portion. The current shunt is a sheet metal body ringed on the surface of the insulator and coaxial with the cylinder, and is coupled to the first electrode and the second electrode. The sheet metal body is provided with a first measuring point and a second measuring point. In this configuration, the stability of electrical characteristics and the accuracy of current sensing can be effectively improved.

Description

電流感測裝置Current Sensing Device

本創作係關於一種感測裝置，特別的是關於一種具有特定結構配置以產生正確且穩定之電流感測結果的電流感測裝置。The present invention relates to a sensing device, in particular, to a current sensing device having a specific structural configuration to generate correct and stable current sensing results.

電子產品無論是在品質的檢測或是其他的應用層面上，往往會需要對電迴路進行電流的感測，以取得電氣特性的參數供後續分析或判定。Electronic products, whether in quality inspection or other application levels, often need to sense currents in electrical circuits to obtain parameters of electrical characteristics for subsequent analysis or determination.

為了確保或掌握電子產品在運作上的穩定性，在電流感測上就必須要能準確地將電迴路中的電流流量量測出來。然而，現今許多電子產品往往具備了高頻寬或是大電流等的電氣特性，這使得電流的感測容易受到干擾導致誤差，進而讓電流感測的可靠度降低。In order to ensure or grasp the operational stability of electronic products, it is necessary to accurately measure the current flow in the electrical circuit in current sensing. However, many electronic products nowadays often have electrical characteristics such as high bandwidth or high current, which makes the current sensing susceptible to interference and leads to errors, thereby reducing the reliability of current sensing.

本創作之一目的在於提高電流感測的正確性與穩定性。One purpose of this creation is to improve the accuracy and stability of current sensing.

本創作之另一目的在於提供一種適用於高頻寬的電流感測裝置。Another objective of the present invention is to provide a current sensing device suitable for high bandwidth.

為達上述目的及其他目的，本創作提出一種電流感測裝置，用於藉由第一電連接部及第二電連接部耦接在一供電迴路中，以及藉由第一量測點及第二量測點輸出一感測結果，包含：第一電極、第二電極、絕緣件及電流分流器。第一電極具有一座體及自該座體延伸而出的一柱體，該柱體於遠離該座體的一端部係作為該第一電連接部。絕緣件具有容置該柱體的一通道。第二電極設於該絕緣件的前端並具有供該柱體凸伸而出的一通孔，該第二電極的外表面係作為該第二電連接部，該第二電極藉由該絕緣件與該柱體隔離。電流分流器係為環設於該絕緣件表面且與該柱體同軸的一金屬片體，該金屬片體耦接該第一電極及該第二電極，該金屬片體上設有該第一量測點及該第二量測點。In order to achieve the above purpose and other purposes, the present invention provides a current sensing device, which is used for coupling in a power supply loop through a first electrical connection portion and a second electrical connection portion, and for using a first measurement point and a second electrical connection portion. The two measuring points output a sensing result, including: a first electrode, a second electrode, an insulating member and a current shunt. The first electrode has a seat and a column extending from the seat, and one end of the column away from the seat serves as the first electrical connection part. The insulator has a channel for accommodating the cylinder. The second electrode is disposed at the front end of the insulating member and has a through hole for the cylinder to protrude. The outer surface of the second electrode is used as the second electrical connection portion, and the second electrode is connected to the insulating member through the insulating member. The cylinder is isolated. The current shunt is a metal sheet that is arranged around the surface of the insulating member and is coaxial with the cylinder. The metal sheet is coupled to the first electrode and the second electrode, and the first electrode is provided on the metal sheet. The measurement point and the second measurement point.

根據本創作的一實施例，該座體可構造為向內凹陷以形成一環壁並形成圍繞該柱體的一限位部，該限位部用於容置該絕緣件的末端。According to an embodiment of the present invention, the seat body may be configured to be recessed inward to form a ring wall and to form a limiting portion surrounding the column body, and the limiting portion is used for accommodating the end of the insulating member.

根據本創作的一實施例，該環壁的端緣與該金屬片體之間可藉由一後端焊接部形成連接。According to an embodiment of the present invention, the end edge of the ring wall and the metal sheet body can be connected by a rear end welding portion.

根據本創作的一實施例，該第二電極與該金屬片體之間可藉由一前端焊接部形成連接。According to an embodiment of the present invention, the connection between the second electrode and the metal sheet can be formed by a front-end welding portion.

根據本創作的一實施例，該第一電極的該第一電連接部可用於接收該供電迴路的輸入電流，該第二電極的該第二電連接部可用於產生輸出電流至該供電迴路。According to an embodiment of the present invention, the first electrical connection portion of the first electrode can be used to receive the input current of the power supply loop, and the second electrical connection portion of the second electrode can be used to generate an output current to the power supply loop.

根據本創作的一實施例，該絕緣件可於側緣具有朝外凸伸的一定位板，環設於該絕緣件表面的該金屬片體具有供該定位板凸伸而出的一縫隙，自該金屬片體延伸而出的該第一量測點及該第二量測點可配置於該定位板上。According to an embodiment of the present invention, the insulating member may have a positioning plate protruding outward at the side edge, and the metal sheet body surrounding the surface of the insulating member has a gap for the positioning plate to protrude out. The first measuring point and the second measuring point extending from the metal sheet body can be arranged on the positioning plate.

根據本創作的一實施例，該絕緣件可構造為筒狀，該金屬片體可構造為具有一曲率的環型片體。According to an embodiment of the present invention, the insulating member may be configured as a cylindrical shape, and the metal sheet body may be configured as a ring-shaped sheet body having a curvature.

根據本創作的一實施例，配置於鄰近該縫隙處的該第一量測點及該第二量測點可自該金屬片體的同一側沿徑向方向凸伸而出。According to an embodiment of the present invention, the first measurement point and the second measurement point disposed adjacent to the slit can protrude from the same side of the metal sheet body in a radial direction.

根據本創作的一實施例，該第一電極及該第二電極可為非合金材質，該電流分流器可為合金材質。According to an embodiment of the present invention, the first electrode and the second electrode can be made of non-alloy material, and the current shunt can be made of alloy material.

根據本創作的一實施例，該第一電極及該第二電極的材質可為銅，該電流分流器的材質可為錳銅合金。According to an embodiment of the present invention, the material of the first electrode and the second electrode may be copper, and the material of the current shunt may be a manganese-copper alloy.

根據本創作的一實施例，可更包含：一散熱元件及一阻隔件。該散熱元件可藉由該阻隔件以承抵在該電流分流器的外圍，並藉由該阻隔件使該散熱元件不接觸該第一電極、該第二電極及該電流分流器。According to an embodiment of the present invention, it may further include: a heat dissipation element and a blocking member. The heat dissipation element can be supported on the periphery of the current shunt by the blocking element, and the heat dissipation element can be kept from contacting the first electrode, the second electrode and the current shunt by the blocking element.

根據本創作的一實施例，可更包含：一風扇裝置。風扇裝置設於該散熱元件的一端，以對該散熱元件提供氣流。According to an embodiment of the present invention, it may further include: a fan device. The fan device is arranged at one end of the heat dissipation element to provide airflow to the heat dissipation element.

據此，在電流分流器與第一電極的柱體是同軸的配置，以及環設於絕緣件表面的電流分流器的配置下，電流在電流感測裝置內的流動路徑形成一去一回的交錯式路徑，在這樣的傳輸路徑中，電流所衍伸的磁場分布可被有效地均勻化，且作為電壓取樣的電流分流器也不易隨著頻率的上升而大幅影響阻抗的大小，可有效提升電氣特性的穩定程度與電流感測的正確性。Accordingly, in the configuration in which the current shunt is coaxial with the cylinder of the first electrode, and in the configuration of the current shunt disposed around the surface of the insulating member, the current flow path in the current sensing device forms a one-to-one return. Staggered path, in such a transmission path, the distribution of the magnetic field derived by the current can be effectively uniformized, and the current shunt used as a voltage sampling is not easy to greatly affect the size of the impedance with the increase of the frequency, which can effectively improve the Stability of electrical characteristics and correctness of current sensing.

為充分瞭解本創作之目的、特徵及功效，茲藉由下述具體之實施例，並配合所附之圖式，對本創作做一詳細說明，說明如後：In order to fully understand the purpose, features and effects of this creation, hereby use the following specific embodiments and cooperate with the attached drawings to give a detailed description of this creation, and the description is as follows:

於本文中，所描述之用語「一」或「一個」來描述單元、部件、結構、裝置、模組、系統、部位或區域等。此舉只是為了方便說明，並且對本創作之範疇提供一般性的意義。因此，除非很明顯地另指他意，否則此種描述應理解為包括一個或至少一個，且單數也同時包括複數。As used herein, the terms "a" or "an" are described to describe a unit, component, structure, device, module, system, portion or region, or the like. This is only for the convenience of explanation and to provide a general meaning to the scope of this creation. Accordingly, unless it is clear that it is meant otherwise, such descriptions should be read to include one or at least one, and the singular also includes the plural.

於本文中，所描述之用語「包含、包括、具有」或其他任何類似用語意係非僅限於本文所列出的此等要件而已，而是可包括未明確列出但卻是所述單元、部件、結構、裝置、模組、系統、部位或區域通常固有的其他要件。In this text, the terms "comprising, including, having" or any other similar terms described are not meant to be limited to the elements listed herein, but may include elements that are not explicitly listed but are the stated elements, Other elements usually inherent in a component, structure, device, module, system, location or area.

於本文中，所描述之「第一」或「第二」等類似序數之詞語，係用以區分或指關聯於相同或類似的元件或結構、部位或區域，且不必然隱含此等元件、結構、部位或區域在空間上的順序。應了解的是，在某些情況或配置下，序數詞語係可交換使用而不影響本創作之實施。In this document, words like "first" or "second" described in ordinal numbers are used to distinguish or refer to the same or similar elements or structures, parts or regions, and do not necessarily imply such elements , the spatial order of structures, parts or regions. It should be understood that under certain circumstances or configurations, ordinal terms may be used interchangeably without affecting the performance of the present invention.

請參照圖1及圖2，圖1為本創作一實施例之電流感測裝置的分解示意圖，圖2為電流感測裝置於測試狀態下的電路示意圖。Please refer to FIG. 1 and FIG. 2 . FIG. 1 is an exploded schematic diagram of a current sensing device according to an embodiment of the invention, and FIG. 2 is a schematic circuit diagram of the current sensing device in a test state.

電流感測裝置100包含：第一電極110、第二電極120、絕緣件130及電流分流器140。電流感測裝置100可串接在電源200與待測物300的供電迴路中，以對待測物300進行電流感測。在第一電極110上的端部1111作為第一電連接部101，第二電極120的外表面121作為第二電連接部102。在圖2的示例中，是將電流感測裝置100的第一電連接部101耦接待測物300的正端，第二電連接部102耦接電源200的正端，電流i的流向是由第二電連接部102流入電流感測裝置100，並由第一電連接部101流出電流感測裝置100。The current sensing device 100 includes: a first electrode 110 , a second electrode 120 , an insulating member 130 and a current shunt 140 . The current sensing device 100 can be connected in series in the power supply circuit of the power supply 200 and the DUT 300 to sense the current of the DUT 300 . The end portion 1111 on the first electrode 110 serves as the first electrical connection portion 101 , and the outer surface 121 of the second electrode 120 serves as the second electrical connection portion 102 . In the example of FIG. 2 , the first electrical connection part 101 of the current sensing device 100 is coupled to the positive end of the object 300 under test, the second electrical connection part 102 is coupled to the positive end of the power supply 200 , and the flow direction of the current i is determined by The second electrical connection portion 102 flows into the current sensing device 100 and flows out of the current sensing device 100 through the first electrical connection portion 101 .

在其他實施例中，電流感測裝置100的第二電連接部102也可被配置為耦接待測物300的正端，同時，第一電連接部101耦接電源200的正端，電流i的流向則是變成由第一電連接部101流入電流感測裝置100，並由第二電連接部102流出電流感測裝置100。In other embodiments, the second electrical connection part 102 of the current sensing device 100 can also be configured to be coupled to the positive terminal of the object 300 under test, while the first electrical connection part 101 is coupled to the positive terminal of the power supply 200 , and the current i The flow direction of the current is to flow into the current sensing device 100 from the first electrical connection portion 101 , and flow out of the current sensing device 100 from the second electrical connection portion 102 .

在電流路徑中，電流感測裝置100藉由電流分流器140來做為電流流量的感測主體。電流分流器140上設有第一量測點141及第二量測點142，第一量測點141及第二量測點142用來耦接外部的訊號處理設備，例如：電壓量測設備。電流分流器140藉由本身的阻值讓第一量測點141及第二量測點142之間具有作為感測結果的電壓差異，進而可利用訊號處理設備取得此差異狀態下的電壓壓降值，再藉由此壓降值與電流分流器140的阻值來判定所感測到的電流值。In the current path, the current sensing device 100 uses the current shunt 140 as the sensing body of the current flow. The current shunt 140 is provided with a first measurement point 141 and a second measurement point 142. The first measurement point 141 and the second measurement point 142 are used for coupling with external signal processing equipment, such as voltage measurement equipment . The current shunt 140 makes a voltage difference between the first measurement point 141 and the second measurement point 142 as a sensing result by its own resistance value, and then the signal processing device can be used to obtain the voltage drop under this difference state value, and then the sensed current value is determined by the voltage drop value and the resistance value of the current shunt 140 .

據此，透過電流感測裝置100所取得的感測結果即可供後端裝置或設備去藉由感測結果來判定供電迴路中的電流值。由於電流在導體中的傳輸過程中會在周圍產生磁場，對於電流感測裝置100來說會形成一種干擾，因此，透過電流感測裝置100內的結構配置來改善電流感測的正確性。Accordingly, the sensing result obtained by the current sensing device 100 can be used by the back-end device or equipment to determine the current value in the power supply loop based on the sensing result. Since a magnetic field is generated around the current during the transmission of the conductor, it will cause interference to the current sensing device 100 . Therefore, the correctness of current sensing is improved through the structural configuration in the current sensing device 100 .

如圖1所示，第一電極110具有座體112及柱體111。柱體111配置為自座體112延伸而出。其中，柱體111與座體112可構造為一體成形，或柱體111與座體112可透過其他的連接方式形成電性連接。柱體111在遠離座體112的端部1111上，被定義為用來串接供電迴路的第一電連接部101。As shown in FIG. 1 , the first electrode 110 has a seat body 112 and a column body 111 . The column body 111 is configured to extend from the base body 112 . Wherein, the column body 111 and the base body 112 can be configured to be integrally formed, or the column body 111 and the base body 112 can be electrically connected through other connection methods. The end portion 1111 of the column body 111 away from the base body 112 is defined as the first electrical connection portion 101 for connecting the power supply circuit in series.

在一實施方式中，座體112可被構造為在一端呈現向內凹陷。座體112的外周緣藉由環壁1121來形成凹陷部位的邊緣，環壁1121圍繞柱體111，此凹陷部位定義為限位部1122。限位部1122可用來供絕緣件130末端的容置，進而可限定絕緣件130的位置。In one embodiment, the seat body 112 may be configured to present an inward depression at one end. The outer periphery of the seat body 112 is formed by the annular wall 1121 to form the edge of the concave portion. The annular wall 1121 surrounds the column body 111 , and the concave portion is defined as the limiting portion 1122 . The limiting portion 1122 can be used for accommodating the end of the insulating member 130 , thereby defining the position of the insulating member 130 .

如圖1所示，絕緣件130具有容置柱體111的通道131。在一實施方式中，絕緣件130構造為筒狀，並藉由通道131將柱體111具有曲率的外周面包覆於其中。絕緣件130例如為由屬於耐熱材質的聚甲醛(POM塑料)所製成，或是由其他具絕緣效果的材料所製成。As shown in FIG. 1 , the insulating member 130 has a channel 131 for accommodating the column 111 . In one embodiment, the insulating member 130 is configured in a cylindrical shape, and the outer peripheral surface of the cylindrical body 111 with curvature is covered therein through the channel 131 . The insulating member 130 is, for example, made of polyoxymethylene (POM plastic) which is a heat-resistant material, or made of other materials with insulating effect.

第二電極120設於絕緣件130的前端，並具有供柱體111的端部1111凸伸而出的通孔122。第二電極120的外表面可被定義為第二電連接部102。其中，第二電極120藉由絕緣件130而與柱體111之間形成隔離狀態，無直接的電性連接。The second electrode 120 is disposed at the front end of the insulating member 130 and has a through hole 122 through which the end portion 1111 of the column body 111 protrudes. The outer surface of the second electrode 120 may be defined as the second electrical connection part 102 . The second electrode 120 is isolated from the column body 111 by the insulating member 130, and there is no direct electrical connection.

電流分流器140作為耦接在第一電極110及第二電極120間的中間元件，讓供電迴路中的電流流過，以用於感測供電迴路中的電流流量。電流分流器140具有阻值且呈金屬片體狀，透過第一量測點141及第二量測點142與外部訊號處理設備耦接。藉由第一量測點141與第二量測點142間所具有的電壓差，可供外部訊號處理設備取得此感測結果以進行供電迴路中之電流值的判定。The current shunt 140 is used as an intermediate element coupled between the first electrode 110 and the second electrode 120 to allow the current in the power supply loop to flow, so as to sense the current flow in the power supply loop. The current shunt 140 has a resistance value and is in the shape of a metal sheet, and is coupled to an external signal processing device through the first measurement point 141 and the second measurement point 142 . With the voltage difference between the first measurement point 141 and the second measurement point 142 , the external signal processing device can obtain the sensing result to determine the current value in the power supply loop.

電流分流器140構造為金屬片體並環設於絕緣件130的表面。值得注意的是，電流分流器140與柱體111是以同軸的方式來配置二者間的空間關係。如圖1的示例，柱體111可被絕緣件130的通道131限位於內，電流分流器140配置在絕緣件130的表面且隨著絕緣件130的筒狀外形彎曲而具有曲率，呈現環形片體狀。據此，絕緣件130的結構可讓電流分流器140與柱體111之間的空間位置關係被限制，限定了電流在電流感測裝置100內的傳輸路徑。The current shunt 140 is configured as a metal sheet and is arranged around the surface of the insulating member 130 . It is worth noting that the spatial relationship between the current shunt 140 and the column 111 is configured in a coaxial manner. As shown in FIG. 1 , the column 111 can be confined by the channel 131 of the insulating member 130 , the current shunt 140 is disposed on the surface of the insulating member 130 and has a curvature as the cylindrical shape of the insulating member 130 is bent, presenting a ring-shaped sheet body shape. Accordingly, the structure of the insulating member 130 can limit the spatial positional relationship between the current shunt 140 and the column body 111 , thereby limiting the transmission path of the current in the current sensing device 100 .

請同時參照圖1及圖3，圖3為圖1實施例之電流感測裝置的立體示意圖。絕緣件130在側緣具有朝外凸伸的定位板132。定位板132用來承抵自電流分流器140之金屬片體延伸而出的第一量測點141及第二量測點142。定位板132上可設有供耦接第一量測點141及第二量測點142之導線(圖未示)安置的溝槽。電流分流器140之環狀的金屬片體具有縫隙L(如圖1所示)，縫隙L用於使定位板132凸伸而出。Please refer to FIG. 1 and FIG. 3 at the same time. FIG. 3 is a three-dimensional schematic diagram of the current sensing device of the embodiment of FIG. 1 . The insulating member 130 has a positioning plate 132 protruding outward at the side edge. The positioning plate 132 is used to bear against the first measurement point 141 and the second measurement point 142 extending from the metal sheet of the current shunt 140 . The positioning plate 132 may be provided with grooves for arranging the wires (not shown) coupled to the first measurement point 141 and the second measurement point 142 . The annular metal sheet body of the current shunt 140 has a slot L (as shown in FIG. 1 ), and the slot L is used to protrude the positioning plate 132 .

在一實施方式中，第一電極110之環壁1121的端緣與電流分流器140的金屬片體之間可藉由後端焊接部143形成電性的連接。此外，第二電極120與電流分流器140的金屬片體之間同樣可利用焊接的方式而藉由前端焊接部形成電性的連接。亦即，將環形的環壁1121及第二電極120的端緣以一整圈布置焊接部的方式來與電流分流器140的金屬片體形成電性連接。其中，前端焊接部未示於圖3中，其相同於後端焊接部143的態樣。In one embodiment, an electrical connection can be formed between the end edge of the ring wall 1121 of the first electrode 110 and the metal sheet of the current shunt 140 through the rear end welding portion 143 . In addition, the second electrode 120 and the metal sheet of the current shunt 140 can also be electrically connected by welding through the front-end welding portion. That is, the annular ring wall 1121 and the end edge of the second electrode 120 are electrically connected to the metal sheet of the current shunt 140 by arranging the welding portion in a whole circle. The front-end welding portion is not shown in FIG. 3 , which is the same as the rear-end welding portion 143 .

如圖1及圖3的示例，配置在鄰近縫隙L處的第一量測點141及第二量測點142是由電流分流器140的的同一側，沿著筒狀外形的金屬片體的徑向方向凸伸而出，亦即，第一量測點141及第二量測點142被配置為近似於垂直筒狀外形的金屬片體的表面。在圖3的示例中，第一電極110的柱體111可凸伸於絕緣件130之通道131的通道口之外，且絕緣件130的通道口亦凸伸於第二電極120之通孔122的孔口之外，藉此可進一步確保第一電極110與第二電極120的阻隔性。As shown in FIGS. 1 and 3 , the first measurement point 141 and the second measurement point 142 disposed adjacent to the gap L are formed by the same side of the current shunt 140 along the cylindrical shape of the metal sheet. The radial direction protrudes, that is, the first measurement point 141 and the second measurement point 142 are arranged to be approximately the surface of the metal sheet body with a vertical cylindrical shape. In the example of FIG. 3 , the column body 111 of the first electrode 110 may protrude beyond the channel opening of the channel 131 of the insulating member 130 , and the channel opening of the insulating member 130 also protrudes from the through hole 122 of the second electrode 120 In addition to the opening of the first electrode 110 and the second electrode 120 , the barrier properties of the first electrode 110 and the second electrode 120 can be further ensured.

請參照圖4，為本創作另一實施例之電流感測裝置的剖面示意圖。圖4的示例類似於圖3的示例，藉由剖面示意圖來說明電流的流向。圖4的電流感測裝置100是以第一電極110耦接待測物的正端，第二電極120耦接電源的正端來作為其中一種示例(可同時參照圖2)。電流i自第一電極110的柱體111的端部1111流入，並流經柱體111本體後進入第一電極110的座體112，再透過後端焊接部143流入電流分流器140，並自與電流分流器140耦接的第二電極120流出。其中，電流分流器140的一端是抵頂在第二電極120之通孔121的斜口122處，藉由未繪示出的前端焊接部與第二電極120耦接。Please refer to FIG. 4 , which is a schematic cross-sectional view of a current sensing device according to another embodiment of the present invention. The example of FIG. 4 is similar to the example of FIG. 3 , and a schematic cross-sectional view is used to illustrate the current flow. In the current sensing device 100 of FIG. 4 , the first electrode 110 is coupled to the positive terminal of the object to be measured, and the second electrode 120 is coupled to the positive terminal of the power supply as one example (refer to FIG. 2 at the same time). The current i flows from the end 1111 of the cylinder 111 of the first electrode 110, flows through the body of the cylinder 111 and then enters the seat 112 of the first electrode 110, and then flows into the current shunt 140 through the rear welding portion 143, and flows from The second electrode 120 coupled to the current shunt 140 flows out. One end of the current shunt 140 abuts against the inclined opening 122 of the through hole 121 of the second electrode 120 , and is coupled to the second electrode 120 by a front-end welding portion not shown.

基於電流分流器140與柱體111間的同軸配置，對稱式的電流路徑可有效抵銷相互間之感應磁場所造成的干擾現象。此外，金屬片體式的電流分流器140也可以讓電流所衍伸的磁場分布被均勻化，進而亦能適合具有高頻率的輸入電流(例如大電流，100A)。Based on the coaxial arrangement between the current shunt 140 and the column body 111 , the symmetrical current paths can effectively offset the interference phenomenon caused by the induced magnetic fields between them. In addition, the sheet metal current shunt 140 can also make the distribution of the magnetic field derived from the current to be uniform, and is also suitable for input current with high frequency (eg, large current, 100A).

在其他實施例中，第一電極110及第二電極120為非合金材質(例如採用銅材質的電極)，電流分流器140為合金材質(例如錳銅合金或其他合金)。第一電極110、第二電極120及電流分流器140中，僅有電流分流器140為合金材質且搭配著金屬片體式的外型以及與柱體111間的同軸配置，可讓電流分流器140的阻值更不易隨著頻率的變化而受影響。In other embodiments, the first electrode 110 and the second electrode 120 are made of non-alloy material (eg, electrodes made of copper), and the current shunt 140 is made of alloy material (eg, manganese-copper alloy or other alloys). Among the first electrode 110 , the second electrode 120 and the current shunt 140 , only the current shunt 140 is made of alloy material and is matched with the shape of a metal sheet and is coaxial with the cylinder 111 , so that the current shunt 140 can be The resistance value is less susceptible to changes with frequency.

請參照圖5，為本創作再一實施例之電流感測裝置的分解示意圖。本實施例中，電流感測裝置100更包含：散熱元件150及阻隔件151。散熱元件150藉由阻隔件151以承抵在電流分流器140的外圍，並藉由阻隔件151使散熱元件150不接觸第一電極110的柱體111與座體112、第二電極120及電流分流器140。散熱元件150例如鰭片式的結構被配置於外圍，進一步地還可在一端配置風扇裝置160，以對散熱元件150提供進一步的流動性氣流，有助於散熱效果的增進。Please refer to FIG. 5 , which is an exploded schematic diagram of a current sensing device according to still another embodiment of the present invention. In this embodiment, the current sensing device 100 further includes: a heat dissipation element 150 and a blocking member 151 . The heat dissipation element 150 is supported on the periphery of the current shunt 140 by the blocking member 151 , and the heat dissipation member 150 does not contact the column body 111 and the base body 112 of the first electrode 110 , the second electrode 120 and the current by the blocking member 151 . Shunt 140 . The heat dissipation element 150 such as a fin-type structure is disposed at the periphery, and a fan device 160 may be further disposed at one end to provide further fluid airflow to the heat dissipation element 150, which is helpful for improving the heat dissipation effect.

綜合上述，本創作將電流分流器配置為環設於絕緣件表面且與柱體同軸的金屬片體，並與第一電極及第二電極構成電流感測裝置內的對稱式電流路徑。在此配置下，可有效提升電氣特性的穩定程度與電流感測的正確性。In view of the above, the present invention configures the current shunt as a metal sheet ring disposed on the surface of the insulating member and coaxial with the cylinder, and forms a symmetrical current path in the current sensing device with the first electrode and the second electrode. Under this configuration, the stability of electrical characteristics and the accuracy of current sensing can be effectively improved.

本創作在上文中已以較佳實施例揭露，然熟習本項技術者應理解的是，該實施例僅用於描繪本創作，而不應解讀為限制本創作之範圍。應注意的是，舉凡與該實施例等效之變化與置換，均應設為涵蓋於本創作之範疇內。因此，本創作之保護範圍當以申請專利範圍所界定者為準。The present creation has been disclosed above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present creation, and should not be construed as limiting the scope of the present creation. It should be noted that all changes and substitutions equivalent to this embodiment should be set to be included in the scope of the present creation. Therefore, the scope of protection of this creation shall be determined by the scope of the patent application.

100:電流感測裝置 101:第一電連接部 102:第二電連接部 110:第一電極 111:柱體 1111:端部 112:座體 1121:環壁 1122:限位部 120:第二電極 121:外表面 122:通孔 123:斜口 130:絕緣件 131:通道 132:定位板 140:電流分流器 141:第一量測點 142:第二量測點 143:後端焊接部 150:散熱元件 151:阻隔件 160:風扇裝置 200:電源 300:待測物 i:電流 L:縫隙 100: Current Sensing Device 101: The first electrical connection part 102: the second electrical connection 110: The first electrode 111: Cylinder 1111: End 112: seat body 1121: Ring Wall 1122: Limiting part 120: Second electrode 121: outer surface 122: Through hole 123: Oblique mouth 130: Insulation parts 131: Channel 132: Positioning plate 140: Current Shunt 141: The first measurement point 142: Second measurement point 143: Rear welding part 150: cooling element 151: Barrier 160: Fan unit 200: Power 300: Object to be tested i: current L: Gap

[圖1]為本創作一實施例之電流感測裝置的分解示意圖。 [圖2]為電流感測裝置於測試狀態下的電路示意圖。 [圖3]為圖1實施例之電流感測裝置的立體示意圖。 [圖4]為本創作另一實施例之電流感測裝置的剖面示意圖。 [圖5]為本創作再一實施例之電流感測裝置的分解示意圖。 1 is an exploded schematic diagram of a current sensing device according to an embodiment of the present invention. [ FIG. 2 ] is a schematic circuit diagram of the current sensing device in a test state. FIG. 3 is a three-dimensional schematic diagram of the current sensing device of the embodiment of FIG. 1 . 4 is a schematic cross-sectional view of a current sensing device according to another embodiment of the invention. 5 is an exploded schematic diagram of a current sensing device according to still another embodiment of the present invention.

100:電流感測裝置 100: Current Sensing Device

110:第一電極 110: The first electrode

111:柱體 111: Cylinder

1111:端部 1111: End

112:座體 112: seat body

1121:環壁 1121: Ring Wall

1122:限位部 1122: Limiting part

120:第二電極 120: Second electrode

121:外表面 121: outer surface

122:通孔 122: Through hole

130:絕緣件 130: Insulation parts

131:通道 131: Channel

132:定位板 132: Positioning plate

140:電流分流器 140: Current Shunt

141:第一量測點 141: The first measurement point

142:第二量測點 142: Second measurement point

L:縫隙 L: Gap

Claims

一種電流感測裝置，用於藉由第一電連接部及第二電連接部耦接在一供電迴路中，以及藉由第一量測點及第二量測點輸出一感測結果，包含：第一電極，具有一座體及自該座體延伸而出的一柱體，該柱體於遠離該座體的一端部係作為該第一電連接部；一絕緣件，具有容置該柱體的一通道；第二電極，設於該絕緣件的前端並具有供該柱體凸伸而出的一通孔，該第二電極的外表面係作為該第二電連接部，該第二電極藉由該絕緣件與該柱體隔離；及一電流分流器，係為環設於該絕緣件表面且與該柱體同軸的一金屬片體，該金屬片體耦接該第一電極及該第二電極，該金屬片體上設有該第一量測點及該第二量測點。 A current sensing device is used for coupling in a power supply loop through a first electrical connection part and a second electrical connection part, and outputting a sensing result through the first measurement point and the second measurement point, comprising: : The first electrode has a seat and a column extending from the seat, and one end of the column away from the seat serves as the first electrical connection part; an insulating member having a channel for accommodating the cylinder; The second electrode is disposed at the front end of the insulating member and has a through hole for the cylinder to protrude. The outer surface of the second electrode is used as the second electrical connection portion, and the second electrode is connected by the insulating member. isolated from the cylinder; and A current shunt is a metal sheet that is arranged around the surface of the insulating member and is coaxial with the cylinder, the metal sheet is coupled to the first electrode and the second electrode, and the metal sheet is provided with the the first measurement point and the second measurement point.

如請求項1所述之電流感測裝置，其中該座體係構造為向內凹陷以形成一環壁並形成圍繞該柱體的一限位部，該限位部係用於容置該絕緣件的末端。The current sensing device of claim 1, wherein the seat system is configured to be recessed inward to form a ring wall and to form a limiting portion surrounding the column, the limiting portion being used for accommodating the insulating member. end.

如請求項2所述之電流感測裝置，其中該環壁的端緣與該金屬片體之間係藉由一後端焊接部形成連接。The current sensing device according to claim 2, wherein the end edge of the ring wall and the metal sheet body are connected by a rear welding portion.

如請求項3所述之電流感測裝置，其中該第二電極與該金屬片體之間係藉由一前端焊接部形成連接。The current sensing device of claim 3, wherein the second electrode and the metal sheet are connected by a front-end welding portion.

如請求項1所述之電流感測裝置，其中該第一電極的該第一電連接部係用於接收該供電迴路的輸入電流，該第二電極的該第二電連接部係用於產生輸出電流至該供電迴路。The current sensing device of claim 1, wherein the first electrical connection portion of the first electrode is used for receiving the input current of the power supply loop, and the second electrical connection portion of the second electrode is used for generating Output current to the power supply circuit.

如請求項1所述之電流感測裝置，其中該絕緣件係於側緣具有朝外凸伸的一定位板，環設於該絕緣件表面的該金屬片體具有供該定位板凸伸而出的一縫隙，自該金屬片體延伸而出的該第一量測點及該第二量測點係配置於該定位板上。The current sensing device as claimed in claim 1, wherein the insulating member has a positioning plate protruding outward at the side edge, and the metal sheet body surrounding the surface of the insulating member has a positioning plate protruding from the insulating member. A slit, the first measuring point and the second measuring point extending from the metal sheet body are arranged on the positioning plate.

如請求項6所述之電流感測裝置，其中該絕緣件係構造為筒狀，該金屬片體係構造為具有一曲率的環型片體。The current sensing device according to claim 6, wherein the insulating member is configured as a cylinder, and the metal sheet system is configured as a ring-shaped sheet body with a curvature.

如請求項6所述之電流感測裝置，其中配置於鄰近該縫隙處的該第一量測點及該第二量測點係自該金屬片體的同一側沿徑向方向凸伸而出。The current sensing device as claimed in claim 6, wherein the first measurement point and the second measurement point disposed adjacent to the slit protrude from the same side of the metal sheet in a radial direction .

如請求項1所述之電流感測裝置，其中該第一電極及該第二電極係為非合金材質，該電流分流器係為合金材質。The current sensing device of claim 1, wherein the first electrode and the second electrode are made of non-alloy material, and the current shunt is made of alloy material.

如請求項1所述之電流感測裝置，其中該第一電極及該第二電極的材質係為銅，該電流分流器的材質係為錳銅合金。The current sensing device of claim 1, wherein the material of the first electrode and the second electrode is copper, and the material of the current shunt is manganese-copper alloy.

如請求項1至10中任一項所述之電流感測裝置，更包含：一散熱元件及一阻隔件，該散熱元件藉由該阻隔件以承抵在該電流分流器的外圍，並藉由該阻隔件使該散熱元件不接觸該第一電極、該第二電極及該電流分流器。The current sensing device according to any one of claims 1 to 10, further comprising: a heat dissipation element and a blocking member, the heat dissipation element is supported on the periphery of the current shunt by the blocking member, and is supported by the blocking member. The heat dissipating element does not contact the first electrode, the second electrode and the current shunt by the blocking member.

如請求項11所述之電流感測裝置，更包含：一風扇裝置，係設於該散熱元件的一端，以對該散熱元件提供氣流。The current sensing device as claimed in claim 11, further comprising: a fan device disposed at one end of the heat dissipation element to provide airflow to the heat dissipation element.