JP3284375B2 - Current detecting resistor and method of manufacturing the same - Google Patents
Current detecting resistor and method of manufacturing the sameInfo
- Publication number
- JP3284375B2 JP3284375B2 JP07638593A JP7638593A JP3284375B2 JP 3284375 B2 JP3284375 B2 JP 3284375B2 JP 07638593 A JP07638593 A JP 07638593A JP 7638593 A JP7638593 A JP 7638593A JP 3284375 B2 JP3284375 B2 JP 3284375B2
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- current
- terminals
- voltage
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明は電流検出用抵抗器及びそ
の製造方法に係り、特に数十Ａ程度の電流を流し、数十
ｍＶ程度の電圧を高精度の低抵抗で検出する電流検出用
抵抗器及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current detecting resistor and a method of manufacturing the same, and more particularly, to a current detecting resistor for passing a current of about several tens A and detecting a voltage of about several tens mV with high precision and low resistance. The present invention relates to a resistor and a method for manufacturing the resistor.
【０００２】[0002]
【従来の技術】車載用等の電流検出用抵抗器には、電流
を数十Ａ程度流し、数十ｍＶ程度の電圧を検出する低抵
抗で、かつその抵抗値のバラツキの精度が例えば１％以
内という高精度が要求される場合がある。このような低
抵抗で、かつ高精度が要求される抵抗器には、従来大き
な形状の２端子の標準抵抗器が用いられていた。2. Description of the Related Art A current detecting resistor for a vehicle or the like has a low resistance of about several tens of amperes and detects a voltage of about several tens of mV, and the accuracy of the resistance value variation is, for example, 1%. In some cases, high accuracy within the range is required. Conventionally, a large-sized two-terminal standard resistor has been used for such a resistor requiring low resistance and high accuracy.
【０００３】しかしながら、このような１ｍΩ程度の低
抵抗値で、かつそのバラツキ精度を１％程度に抑えるこ
とは容易なことではなく、２端子の抵抗体の抵抗値をト
リミングによって調整しようとしても、接触抵抗の方が
測定対象の１ｍΩ以上に大きくなり、その測定すら精度
よく行なうことが難しかった。However, it is not easy to control the resistance value of a two-terminal resistor by trimming with such a low resistance value of about 1 mΩ and a variation accuracy of about 1%. The contact resistance was larger than 1 mΩ of the object to be measured, and it was difficult to perform even the measurement with high accuracy.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、係る従来技
術の問題点に鑑み、数十Ａ程度の電流を流し、数十ｍＶ
程度の電圧を検出することができ、かつその抵抗値のバ
ラツキを少なく（例えば１％以内）製造することが可能
な、高精度の電流検出用抵抗器及びその製造方法を提供
することを目的とする。また同時に、プリント基板等に
表面実装可能な、小型でかつ熱放散の良好な電流検出用
抵抗器及びその製造方法を提供することを目的とする。SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the present invention provides a current of about several tens of A and a current of several tens of mV.
It is an object of the present invention to provide a high-precision current detecting resistor which can detect a voltage of about the same level and can manufacture the resistance value with less variation (for example, within 1%), and a method of manufacturing the same. I do. At the same time, another object of the present invention is to provide a current detection resistor that is small and has good heat dissipation, and that can be surface-mounted on a printed circuit board or the like, and a method of manufacturing the same.
【０００５】[0005]
【課題を解決するための手段】本発明の電流検出用抵抗
器は、１対の電流端子と１対の電圧端子を備えた低抵抗
の金属抵抗体と、該金属抵抗体をサンドイッチ状に挟む
又は埋め込む絶縁部材とからなり、前記電流端子と電圧
端子は表面実装可能に折り曲げられており、前記金属抵
抗体は前記電流端子間に流れる電流によって生じる前記
電圧端子間の電圧をモニタすることによってその抵抗値
をトリミング調整されたものであることを特徴とする。SUMMARY OF THE INVENTION A current detecting resistor according to the present invention includes a low-resistance metal resistor having a pair of current terminals and a pair of voltage terminals, and sandwiches the metal resistor in a sandwich shape. Or an insulating member to be embedded, wherein the current terminal and the voltage terminal are bent so as to be surface mountable, and the metal resistor is formed by monitoring a voltage between the voltage terminals generated by a current flowing between the current terminals. The resistance value is trimmed and adjusted.
【０００６】また、本発明の電流検出用抵抗器の製造方
法は、複数の単位となる１対の電流端子及び１対の電圧
端子を備えた金属抵抗体が、その電流端子を介して互い
に接続された一連の抵抗体群を形成する工程と、該一連
の抵抗体群の両端の電流端子間に電流を流し各単位とな
る抵抗体の電圧端子間に生じる電圧をモニタすることに
よってその抵抗値を順次単位となる抵抗体についてトリ
ミング調整する工程と、一連の抵抗体群から各単位とな
る抵抗体を切離し絶縁部材に挟み込む又は埋め込む工程
と、前記各抵抗体の電流端子及び電圧端子を表面実装可
能に折り曲げる工程とからなることを特徴とする。In the method of manufacturing a current detecting resistor according to the present invention, a metal resistor having a pair of current terminals and a pair of voltage terminals as a plurality of units is connected to each other via the current terminals. Forming a series of resistor groups as described above, and flowing a current between current terminals at both ends of the series of resistor groups, and monitoring the voltage generated between the voltage terminals of the resistors serving as units, thereby monitoring the resistance value. A step of trimming and adjusting a resistor as a unit sequentially, a step of separating the resistor as a unit from a series of resistor groups and sandwiching or embedding it in an insulating member, and surface mounting the current terminal and the voltage terminal of each resistor. Bending as much as possible.
【０００７】[0007]
【作用】複数の単位となる金属抵抗体が、その電流端子
を介して互いに接続された一連の抵抗体群を形成し、該
一連の抵抗体群の両端の電流端子間に電流を流し、各単
位となる抵抗体の電圧端子間に生じる電圧をモニタしな
がら各単位となる抵抗体の抵抗値をトリミング調整する
ことができる。従って、接触抵抗の影響を受けないで、
各抵抗体の抵抗値を測定することができるので、高精度
の低抵抗体を能率よく製造することが可能となる。ま
た、高精度にトリミング調整された抵抗体を一連の抵抗
体群から切り離し、絶縁部材に挟み込み又は埋め込み、
各抵抗体の電流端子及び電圧端子を表面実装可能に折り
曲げることによって、熱放散特性に優れた、プリント基
板等に表面実装可能な小型の電流検出用抵抗器を製造す
ることが可能となる。A plurality of metal resistors form a series of resistor groups connected to each other through their current terminals, and a current flows between current terminals at both ends of the series of resistor groups. The resistance value of each unit resistor can be trimmed while monitoring the voltage generated between the voltage terminals of the unit resistor. Therefore, without being affected by contact resistance,
Since the resistance value of each resistor can be measured, a high-precision low resistor can be efficiently manufactured. In addition, the resistor that has been trimmed and adjusted with high precision is separated from a series of resistor groups, and sandwiched or embedded in an insulating member.
By bending the current terminal and the voltage terminal of each resistor so that they can be surface-mounted, it is possible to manufacture a small current detection resistor that has excellent heat dissipation characteristics and can be surface-mounted on a printed circuit board or the like.
【実施例】以下、添付図１乃至図６に従って本発明の実
施例について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【０００８】図１は、本発明の第１の実施例の電流検出
用抵抗器の構造を示すものであり、（Ａ）は平面図、
（Ｂ）は側面図である。図示するように電流検出用抵抗
器１は、１対の電流端子５，６と１対の電圧端子７，８
を備えた低抵抗の金属抵抗体２がセラミック基板３によ
りサンドイッチ状に挟まれている。セラミック基板３の
サイズは、本実施例においては横１０ｍｍ、縦５ｍｍ程
度であり、プリント基板に表面実装可能な程度に小型に
製造されている。電流端子５，６及び電圧端子７，８は
表面実装可能にＵ字型に折り曲げられている。FIG. 1 shows the structure of a current detecting resistor according to a first embodiment of the present invention. FIG.
(B) is a side view. As shown in the figure, the current detecting resistor 1 includes a pair of current terminals 5 and 6 and a pair of voltage terminals 7 and 8.
Is sandwiched between the ceramic substrates 3 in a sandwich shape. The size of the ceramic substrate 3 is about 10 mm in width and about 5 mm in length in the present embodiment, and is small enough to be surface-mounted on a printed circuit board. The current terminals 5, 6 and the voltage terminals 7, 8 are bent into a U-shape so that they can be surface-mounted.
【０００９】図２は、金属抵抗体２の平面図である。金
属抵抗体２は、電流端子５，６及び電圧端子７，８を備
え、１対の電流端子５，６間に流れる電流によって生じ
る電圧を１対の電圧端子７，８によって検出するもので
ある。そして、電圧端子７，８間の電圧をモニタしなが
ら金属抵抗体２のトリミング調整を行なうことによって
製造されている。開口９は、レーザートリミングあるい
はサンドブラスト等の吹き付けによる高精度のトリミン
グによって形成された開口部である。このように、本電
流検出器は電流端子５，６間に流れる電流の抵抗体によ
って生じる電圧を電圧端子７，８で検出するため、接触
抵抗の影響を受けず、高精度の電流検出を行なうことが
できる。FIG. 2 is a plan view of the metal resistor 2. The metal resistor 2 includes current terminals 5 and 6 and voltage terminals 7 and 8, and detects a voltage generated by a current flowing between the pair of current terminals 5 and 6 with the pair of voltage terminals 7 and 8. . And it is manufactured by performing trimming adjustment of the metal resistor 2 while monitoring the voltage between the voltage terminals 7 and 8. The opening 9 is an opening formed by high-precision trimming by laser trimming or spraying such as sandblasting. As described above, since the current detector detects the voltage generated by the resistor of the current flowing between the current terminals 5 and 6 at the voltage terminals 7 and 8, the current detector is not affected by the contact resistance and performs high-precision current detection. be able to.
【００１０】係る電流検出用抵抗器の動作は次の通りで
ある。まず、例えば車載用の温度センサ等に用いられる
場合には、この電流検出用抵抗器１がプリント基板に表
面実装される。そして、電流端子５，６間に検出される
べき電流が印加される。そして電圧端子７，８間には、
金属抵抗体２のトリミング調整された抵抗値に従って電
圧値が検出される。それ故、電圧端子７，８間の電圧を
モニタすることによって電流端子５，６に流れる電流の
大きさを検出することができる。一例として、金属抵抗
体の抵抗値が１ｍΩ程度の場合には、数十Ａの電流が流
れると数十ｍＶ程度の電圧が検出される。係る構造によ
れば、４端子法によって測定するので接触抵抗の影響を
受けることなく、低抵抗で精度よく大電流を測定するこ
とができる。このような場合には、２Ｗ程度の発熱が生
じるが、金属抵抗体２はセラミック基板３によってサン
ドイッチ状に挟まれて形成されているため、放熱性が良
好であり、その温度上昇を小さく抑えることができる。The operation of such a current detecting resistor is as follows. First, for example, when used for a vehicle-mounted temperature sensor, the current detection resistor 1 is surface-mounted on a printed circuit board. Then, a current to be detected is applied between the current terminals 5 and 6. And between the voltage terminals 7 and 8
A voltage value is detected according to the trimmed resistance value of the metal resistor 2. Therefore, by monitoring the voltage between the voltage terminals 7 and 8, the magnitude of the current flowing through the current terminals 5 and 6 can be detected. As an example, when the resistance value of the metal resistor is about 1 mΩ, a voltage of about several tens mV is detected when a current of several tens A flows. According to this structure, since the measurement is performed by the four-terminal method, a large current can be accurately measured with low resistance without being affected by contact resistance. In such a case, about 2 W of heat is generated. However, since the metal resistor 2 is sandwiched between the ceramic substrates 3, the heat dissipation is good, and the temperature rise is suppressed. Can be.
【００１１】次に、本発明の電流検出用抵抗器の製造方
法について説明する。まず、低抵抗の金属抵抗体２のベ
ースとなる電気抵抗合金特殊板を用意する。これは、銅
−ニッケル板、マンガニン板、ゼラニン板、鉄−銅板、
ニクロム板等の各種金属の合金板である。そして、図３
（Ａ）に示す一連の抵抗体群１０をフィルムマスクによ
るエッチング加工または金型によるプレス打抜き加工に
より形成する。そして、電流端子５，６及び電圧端子
７，８に半田メッキを行なう。これは、マスキングによ
る部分メッキ加工である。Next, a method for manufacturing the current detecting resistor according to the present invention will be described. First, an electric resistance alloy special plate serving as a base of the low resistance metal resistor 2 is prepared. These are copper-nickel, manganin, geranin, iron-copper,
It is an alloy plate of various metals such as a nichrome plate. And FIG.
A series of resistor groups 10 shown in (A) are formed by etching using a film mask or press punching using a die. Then, the current terminals 5, 6 and the voltage terminals 7, 8 are plated with solder. This is a partial plating process by masking.
【００１２】図３は、一連の抵抗体群の平面図であり、
（Ａ）は抵抗トリミング前であり、（Ｂ）は抵抗トリミ
ング後である。一連の抵抗体群１０は、複数の単位とな
る１対の電流端子及び１対の電圧端子を備えた金属抵抗
体２が、その電流端子５，６を介して互いに接続された
ものである。この一連の抵抗体群１０の両端の電流端子
１５，１６間に、例えば５Ａ程度の電流を流し、各金属
抵抗体の電圧端子７，８間の電圧をモニタしながら金属
抵抗体１１のトリミング調整を行い開口１２を形成す
る。次に金属抵抗体１３のトリミング調整を同様にして
行い開口１４を同様に形成する。このような手順で順に
単位となる金属抵抗体を順次トリミング調整を行なって
いくことによって、各金属抵抗体の抵抗値が高精度に調
整される。FIG. 3 is a plan view of a series of resistor groups.
(A) is before resistance trimming, and (B) is after resistance trimming. The series resistor group 10 includes a plurality of metal resistors 2 each having a pair of current terminals and a pair of voltage terminals, which are connected to each other via the current terminals 5 and 6. A current of, for example, about 5 A is passed between the current terminals 15 and 16 at both ends of the series of resistor groups 10 to adjust the trimming of the metal resistor 11 while monitoring the voltage between the voltage terminals 7 and 8 of each metal resistor. Is performed to form an opening 12. Next, the trimming adjustment of the metal resistor 13 is performed in the same manner, and the opening 14 is similarly formed. The resistance value of each metal resistor is adjusted with high precision by sequentially performing trimming adjustment of the metal resistors as a unit in this order.
【００１３】トリミングはレーザートリミング、サンド
ブラスト、ダイヤモンドカッター、グラインダカッター
等によって行なわれる。次に、一連の抵抗体群１０を単
位となる抵抗体に切断する。そして、バラバラとなった
単位となる抵抗体２にアルミナ等のセラミック基板を接
着剤を用いて張り付けサンドイッチ状に形成する。そし
て端子部５，６，７，８のフォーミングすなわち折り曲
げ加工を行い電流検出用抵抗器１が組み立てられる。そ
して、金属抵抗体を挟んだセラミック基板間をモール
ド、レジンディップ等の絶縁材の封じを行い外装を仕上
げる。例えば、アルミナ基板３に金属抵抗体２を挟みシ
リコンゴムにて接着する。そして、外観、抵抗値等の特
性の検査を行い電流検出用抵抗器１が完成する。The trimming is performed by laser trimming, sand blast, diamond cutter, grinder cutter or the like. Next, the series of resistor groups 10 are cut into resistor units. Then, a ceramic substrate made of alumina or the like is attached to the resistor 2 serving as a discrete unit by using an adhesive to form a sandwich. Then, the terminals 5, 6, 7, and 8 are formed, that is, bent, and the current detecting resistor 1 is assembled. Then, an insulating material such as a mold and a resin dip is sealed between ceramic substrates sandwiching the metal resistor to finish the exterior. For example, the metal resistor 2 is sandwiched between the alumina substrates 3 and bonded with silicon rubber. Then, characteristics such as appearance and resistance are inspected to complete the current detection resistor 1.
【００１４】図４は、本発明の第２の実施例の電流検出
用抵抗器の構造を示すものであり、（Ａ）は平面図、
（Ｂ）及び（Ｃ）はその側面図である。電流端子２５，
２６と電圧端子２７，２８を備えた低抵抗の金属抵抗体
２２がセラミック基板２３によってサンドイッチ状に挟
まれた構造は第１の実施例と同様である。第１の実施例
と異なる点は、電流端子２５，２６及び電圧端子２７，
２８がセラミック基板２３に沿って折り曲げられ延伸し
ている点である。このように、電流端子２５，２６及び
電圧端子２７，２８が折り曲げられ延伸していることか
ら第１の実施例と同様にプリント基板等に表面実装が可
能となる。FIG. 4 shows the structure of a current detecting resistor according to a second embodiment of the present invention, wherein FIG.
(B) and (C) are side views. Current terminal 25,
The structure in which the low-resistance metal resistor 22 provided with 26 and voltage terminals 27 and 28 is sandwiched between ceramic substrates 23 in the same manner as in the first embodiment. The difference from the first embodiment is that the current terminals 25, 26 and the voltage terminals 27,
Reference numeral 28 denotes a point which is bent and extended along the ceramic substrate 23. As described above, since the current terminals 25 and 26 and the voltage terminals 27 and 28 are bent and extended, surface mounting on a printed circuit board or the like becomes possible as in the first embodiment.
【００１５】図５は、第２の実施例における金属抵抗体
２２の平面図である。この金属抵抗体２２は、抵抗トリ
ミングにより開口２９が設けられていることは、第１の
実施例と同様である。金属抵抗体２２のパターンは第１
の実施例と異なるが、電流容量、設定抵抗値等により適
宜選択される。又、絶縁部材３，２３は上記第１の実施
例及び第２の実施例においてセラミック基板として説明
されているが、熱伝導性のフィラーを入れたプラスチッ
ク（例えばシリコンレジン）でモールド成形してもよ
い。このように、絶縁部材３，２３の材料及び封止方法
も電流検出用抵抗器の用途等に応じて適宜選択可能であ
る。FIG. 5 is a plan view of a metal resistor 22 according to the second embodiment. This metal resistor 22 is provided with an opening 29 by resistance trimming as in the first embodiment. The pattern of the metal resistor 22 is the first
Although it is different from the embodiment, it is appropriately selected according to the current capacity, the set resistance value and the like. Although the insulating members 3 and 23 are described as ceramic substrates in the first and second embodiments, they may be molded with a plastic (for example, silicone resin) containing a thermally conductive filler. Good. As described above, the material of the insulating members 3 and 23 and the sealing method can be appropriately selected according to the use of the current detecting resistor.
【００１６】図６は、複数の単位となる１対の電流端子
及び１対の電圧端子を備えた金属抵抗体２が、その電流
端子を介して互いに接続された一連の抵抗体群２０の平
面図である。（Ａ）は抵抗トリミング前であり、
（Ｂ）は抵抗トリミングにより開口２９を設けた後であ
る。これらは、第１の実施例と単位となる金属抵抗体の
形状及び数が異なるのみで、その機能は同様である。金
属抵抗体の大きさを増加させることにより、電流容量を
９０Ａの桁まで増大させることも可能である。FIG. 6 shows a plane view of a series of resistor groups 20 in which a plurality of units of a metal resistor 2 having a pair of current terminals and a pair of voltage terminals are connected to each other via the current terminals. FIG. (A) is before resistance trimming,
(B) is after the opening 29 is provided by resistance trimming. These are different from the first embodiment only in the shape and the number of metal resistors as a unit, and the functions are the same. By increasing the size of the metal resistor, the current capacity can be increased to the order of 90A.
【００１７】[0017]
【発明の効果】以上に説明したように本発明の電流検出
器によれば、数十Ａ程度の大電流を数十ｍＶ程度の微少
電圧で接触抵抗の影響を受けることなく精度よく検出す
ることができる。そして小型で表面実装可能な、かつ熱
放散のよい電流検出器が実現される。また本発明の電流
検出器の製造方法によれば、一連の金属抵抗体群全体に
電流を流しながら単位となる各金属抵抗体についてトリ
ミング調整を行なうので、低抵抗でありながらその精度
を±１％以内という高精度に抑え、且つ効率的に生産を
行なうことが可能となる。As described above, according to the current detector of the present invention, it is possible to accurately detect a large current of about several tens A with a small voltage of about several tens mV without being affected by contact resistance. Can be. Thus, a current detector that is compact, surface-mountable, and has good heat dissipation is realized. Further, according to the method of manufacturing the current detector of the present invention, the trimming adjustment is performed for each metal resistor as a unit while applying a current to the entire series of metal resistors, so that the accuracy can be reduced by ± 1 even though the resistance is low. %, And production can be efficiently performed.
【図１】本発明の第１の実施例の電流検出用抵抗器の構
造を示す、（Ａ）平面図、（Ｂ）側面図。FIG. 1A is a plan view and FIG. 1B is a side view showing the structure of a current detection resistor according to a first embodiment of the present invention.
【図２】本発明の第１の実施例の単位となる金属抵抗体
の平面図。FIG. 2 is a plan view of a metal resistor which is a unit of the first embodiment of the present invention.
【図３】本発明の第１の実施例の複数の金属抵抗体から
構成される一連の抵抗体群の平面図であり、（Ａ）は抵
抗トリミング前、（Ｂ）は抵抗トリミング後を示す。FIGS. 3A and 3B are plan views of a series of resistor groups composed of a plurality of metal resistors according to the first embodiment of the present invention, wherein FIG. 3A shows a state before resistor trimming and FIG. .
【図４】本発明の第２の実施例の電流検出用抵抗器の構
造を示す、（Ａ）平面図、（Ｂ）、（Ｃ）側面図。4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a side view showing the structure of a current detecting resistor according to a second embodiment of the present invention.
【図５】本発明の第２の実施例の単位となる金属抵抗体
の平面図。FIG. 5 is a plan view of a metal resistor which is a unit of a second embodiment of the present invention.
【図６】本発明の第２の実施例の一連の抵抗体群の平面
図であり、（Ａ）は抵抗トリミング前、（Ｂ）は抵抗ト
リミング後を示す。FIGS. 6A and 6B are plan views of a series of resistor groups according to a second embodiment of the present invention, in which FIG. 6A shows a state before resistance trimming and FIG. 6B shows a state after resistance trimming.
１ 電流検出用抵抗器 ２，１１，１３，２２ 金属抵抗体 ３，２３ 絶縁部材 ５，６，１５，１６，２５，２６ 電流端子 ７，８，２７，２８ 電圧端子 ９，１２，１４ 開口 １０，２０ 一連の金属抵抗体群 DESCRIPTION OF SYMBOLS 1 Current detection resistor 2,11,13,22 Metal resistor 3,23 Insulating member 5,6,15,16,25,26 Current terminal 7,8,27,28 Voltage terminal 9,12,14 Opening 10 , 20 series of metal resistor groups
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01C 1/00 - 17/30 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) H01C 1/00-17/30
Claims (2)
た低抵抗の金属抵抗体と、該金属抵抗体をサンドイッチ
状に挟む又は埋め込む絶縁部材とからなり、前記電流端
子と電圧端子は表面実装可能に折り曲げられており、前
記金属抵抗体は前記電流端子間に流れる電流によって生
じる前記電圧端子間の電圧をモニタすることによってそ
の抵抗値をトリミング調整されたものであることを特徴
とする電流検出用抵抗器。1. A low-resistance metal resistor having a pair of current terminals and a pair of voltage terminals, and an insulating member sandwiching or embedding the metal resistor in a sandwich shape, wherein the current terminal and the voltage terminal are provided. Is bent so as to be surface mountable, and the resistance of the metal resistor is trimmed and adjusted by monitoring a voltage between the voltage terminals generated by a current flowing between the current terminals. Current detection resistor.
対の電圧端子を備えた金属抵抗体が、その電流端子を介
して互いに接続された一連の抵抗体群を形成する工程
と、該一連の抵抗体群の両端の電流端子間に電流を流し
各単位となる抵抗体の電圧端子間に生じる電圧をモニタ
することによってその抵抗値を順次トリミング調整する
工程と、一連の抵抗体群から各単位となる抵抗体を切離
し絶縁部材に挟み込む又は埋め込む工程と、前記各抵抗
体の電流端子及び電圧端子を表面実装可能に折り曲げる
工程とからなることを特徴とする電流検出用抵抗器の製
造方法。2. A pair of current terminals and a plurality of units,
A step of forming a series of resistors connected to each other through the current terminals by a metal resistor having a pair of voltage terminals; and flowing a current between current terminals at both ends of the series of resistors. A step of sequentially trimming and adjusting the resistance value by monitoring a voltage generated between the voltage terminals of the unit resistors, and a step of separating each unit resistor from a series of resistor groups and inserting or embedding it in an insulating member. Bending a current terminal and a voltage terminal of each resistor so as to be surface mountable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07638593A JP3284375B2 (en) | 1993-03-10 | 1993-03-10 | Current detecting resistor and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07638593A JP3284375B2 (en) | 1993-03-10 | 1993-03-10 | Current detecting resistor and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06267707A JPH06267707A (en) | 1994-09-22 |
| JP3284375B2 true JP3284375B2 (en) | 2002-05-20 |
Family
ID=13603872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07638593A Expired - Lifetime JP3284375B2 (en) | 1993-03-10 | 1993-03-10 | Current detecting resistor and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3284375B2 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2764517B2 (en) * | 1993-03-24 | 1998-06-11 | ローム株式会社 | Chip resistor, and current detection circuit and current detection method using the same |
| JP4588157B2 (en) * | 2000-03-22 | 2010-11-24 | 株式会社日本クライメイトシステムズ | Resistor for air blow control of vehicle air conditioner and processing method thereof |
| JP2003004822A (en) * | 2001-06-15 | 2003-01-08 | Matsushita Electric Ind Co Ltd | Battery power source device |
| JP3868854B2 (en) * | 2002-06-14 | 2007-01-17 | Ｄｏｗａホールディングス株式会社 | Metal-ceramic bonded body and manufacturing method thereof |
| JP4682601B2 (en) * | 2004-11-30 | 2011-05-11 | パナソニック株式会社 | Resistance value correction method for chip-shaped electronic components |
| JP2006228978A (en) * | 2005-02-17 | 2006-08-31 | Rohm Co Ltd | Low resistance chip resistor and its production process |
| JP5143353B2 (en) * | 2005-11-15 | 2013-02-13 | パナソニック株式会社 | Resistor manufacturing method |
| JP4887749B2 (en) * | 2005-11-15 | 2012-02-29 | パナソニック株式会社 | Resistor manufacturing method |
| JP2007220714A (en) * | 2006-02-14 | 2007-08-30 | Matsushita Electric Ind Co Ltd | Resistor and manufacturing method thereof |
| CN102326215B (en) * | 2009-02-23 | 2014-05-07 | 釜屋电机株式会社 | Metal plate low resistance chip resistor, and production method for the same |
| KR20170061185A (en) | 2009-09-04 | 2017-06-02 | 비쉐이 데일 일렉트로닉스, 엘엘씨 | Resistor with temperature coefficient of resistance(tcr) compensation |
| JP6457172B2 (en) * | 2013-10-22 | 2019-01-23 | Koa株式会社 | Resistance element manufacturing method |
| JP6694038B2 (en) * | 2018-11-20 | 2020-05-13 | Koa株式会社 | Method for manufacturing shunt resistance element |
| CN116420197A (en) | 2020-08-20 | 2023-07-11 | 韦沙戴尔电子有限公司 | Resistor, current sensing resistor, battery shunt, shunt resistor and manufacturing method |
-
1993
- 1993-03-10 JP JP07638593A patent/JP3284375B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06267707A (en) | 1994-09-22 |
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