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公开(公告)号：US20230162894A1
公开(公告)日：2023-05-25
申请号：US17919107
申请日：2021-04-05
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo
Abstract: The present invention relates to a shunt resistor for current detection. The shunt resistor (1) includes: a resistance element (5) having a plate shape; and electrodes (6, 7) connected to both end surfaces (5a, 5b) of the resistance element (5), wherein the electrodes (6, 7) have cut portions (11, 12), respectively, the cut portions (11, 12) extending parallel to joint portions (8, 9) of the resistance element (5) and the electrodes (6, 7), and each of the cut portions (11, 12) is located at a position where a relationship Y≤0.80X-1.36 holds, where Y is a distance from each joint portion (6, 7) to each cut portion (11, 12), and X is a length of the joint portions (6, 7) in a width direction of the electrodes (6, 7).
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公开(公告)号：US11268986B2
公开(公告)日：2022-03-08
申请号：US16334494
申请日：2017-08-17
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo
Abstract: Provided is a current measuring device for measuring current, including a conductor (1) adapted to pass current therethrough, and a circuit board (31) with a wire, the wire being adapted to extract a voltage signal from the conductor, in which the circuit board is disposed upright with respect to the conductor.
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公开(公告)号：US11187725B2
公开(公告)日：2021-11-30
申请号：US16485925
申请日：2018-01-31
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo
Abstract: A shunt resistor including first and second terminals made of an electrically conductive metal material, and a resistive element disposed between the first terminal and the second terminal. Each of the first terminal and the second terminal has a through-hole formed therein. At least one of the first terminal and the second terminal has a protruding portion protruding on a side thereof opposite to a portion bonded to the resistive element.
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公开(公告)号：US11061054B2
公开(公告)日：2021-07-13
申请号：US16624640
申请日：2018-06-25
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo
IPC: G01R19/155 , G01R19/00
Abstract: Provided is a current measuring device for measuring current, including a conductor adapted to pass current therethrough, a circuit board with a wire, the wire being adapted to extract a voltage signal from the conductor, a cover member adapted to house the circuit board, first fixing means provided on the cover member, and second fixing means fixed in combination with the first fixing means, in which the conductor is mounted between the first fixing means and the second fixing means.
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公开(公告)号：US12249445B2
公开(公告)日：2025-03-11
申请号：US17919107
申请日：2021-04-05
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo
Abstract: The present invention relates to a shunt resistor for current detection. The shunt resistor (1) includes: a resistance element (5) having a plate shape; and electrodes (6, 7) connected to both end surfaces (5a, 5b) of the resistance element (5), wherein the electrodes (6, 7) have cut portions (11, 12), respectively, the cut portions (11, 12) extending parallel to joint portions (8, 9) of the resistance element (5) and the electrodes (6, 7), and each of the cut portions (11, 12) is located at a position where a relationship Y≤0.80X-1.36 holds, where Y is a distance from each joint portion (6, 7) to each cut portion (11, 12), and X is a length of the joint portions (6, 7) in a width direction of the electrodes (6, 7).
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Patent Agency Ranking
公开(公告)号：US11226356B2
公开(公告)日：2022-01-18
申请号：US17053228
申请日：2019-05-08
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo
Abstract: Provided is a shunt resistor including: a first terminal and a second terminal each made of an electrically conductive metal material and having a first plane, a second plane, and an outer peripheral surface around the planes; and a resistive body connected to the respective first planes and connecting the first terminal and the second terminal, the first planes of the first terminal and the second terminal opposing each other. A bonding area between the resistive body and the first planes is smaller than an area of the first planes. The first terminal and the second terminal each have a hole penetrating through from the first plane to the second plane. A voltage detection terminal is connected to opposing surface sides of the first terminal and the second terminal.
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公开(公告)号：US11428715B2
公开(公告)日：2022-08-30
申请号：US16640127
申请日：2018-07-20
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo
Abstract: A current measurement device comprising: a shunt resistor; a pair of first and second voltage signal lines connected to the shunt resistor; and a current measurement circuit for measuring a current using a signal by the pair of first and second voltage signal lines. The pair of first and second voltage signal lines are connected to an amplifier circuit with which the current measurement circuit is provided to amplify a voltage signal. A third signal line which is a signal line different from the pair of first and second voltage signal lines and drawn from the shunt resistor is connected to a common line of the current measurement circuit.
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公开(公告)号：US11164687B2
公开(公告)日：2021-11-02
申请号：US17052684
申请日：2019-05-08
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo
Abstract: Provided is a shunt resistor mount structure comprising: a shunt resistor including a pair of electrodes and a resistive body; a current detecting substrate having a control circuit mounted thereon, the substrate having a voltage detecting portion to which a pair of voltage detection terminals of the shunt resistor are connected; and a temperature sensor for measuring a temperature of the electrodes.
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公开(公告)号：US12019100B2
公开(公告)日：2024-06-25
申请号：US17766297
申请日：2020-09-30
Applicant: KOA CORPORATION
Inventor： Kazuhiro Hara , Tamotsu Endo
CPC classification number: G01R15/146 , H01C13/02
Abstract: An object is to provide a shunt resistor module that is reduced in size, can handle a large current, and can accurately detect current. A shunt resistor module of the present invention includes: a shunt resistor that includes a plurality of resistor bodies having a columnar shape, and electrodes that are located at both ends of each of the plurality of resistor bodies; and a circuit board that includes a plurality of through-holes that can house the plurality of resistor bodies, and a plurality of voltage detection terminals that detects a voltage between the electrodes of the shunt resistor that has been inserted into the plurality of through-holes, and each of the plurality of voltage detection terminals is collected near a center of gravity of the shunt resistor.
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公开(公告)号：US10859600B2
公开(公告)日：2020-12-08
申请号：US16317437
申请日：2017-06-07
Applicant: KOA CORPORATION
Inventor： Tamotsu Endo , Ryo Osawa
Abstract: Provided is a current measuring device including a first wire member formed of a conductive metal and a second wire member formed of a conductive metal, the second wire member partially including a resistive element metal, in which the first wire member and the second wire member are arranged in parallel with an insulator sandwiched therebetween in a portion where at least the resistive element metal is present.
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