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公开(公告)号：US20230187107A1
公开(公告)日：2023-06-15
申请号：US17924308
申请日：2021-05-06
Applicant: KOA CORPORATION
Inventor： Toshikazu KURIHARA , Tamotsu ENDO
CPC classification number: H01C7/13 , H01C17/006 , H01C1/148 , H01C1/144
Abstract: Provided is a shunt resistor with an enhanced strength and reduced electrical resistance between a resistive element and terminals of the shunt resistor. This shunt resistor includes a first terminal and a second terminal each made of an electrically conductive metal material; and a resistive element disposed between the first terminal and the second terminal. The first terminal and the second terminal each have a through-hole, and the resistive element is embedded in the through-holes of the first terminal and the second terminal in a depth direction thereof. Regions connecting the resistive element to the first terminal and the second terminal each have an alloy portion formed along an inner peripheral surface of the through-hole.
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公开(公告)号：US20230015342A1
公开(公告)日：2023-01-19
申请号：US17766297
申请日：2020-09-30
Applicant: KOA CORPORATION
Inventor： Kazuhiro HARA , Tamotsu ENDO
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：US20210225563A1
公开(公告)日：2021-07-22
申请号：US17259856
申请日：2019-07-01
Applicant: KOA CORPORATION
Inventor： Tamotsu ENDO
Abstract: This shunt resistor includes: a first terminal and a second terminal each made of an electrically conductive metal material and having a first planar surface and a second planar surface, the respective first planar surfaces of the first terminal and the second terminal opposing each other; and a resistive body and a support column member each connected to the respective first planar surfaces and connecting the first terminal and the second terminal. The support column member is made of a metal material. An area of bonding between the resistive body and the support column member and the respective first planar surfaces is smaller than an area of the first planar surface. The first terminal and the second terminal each have a hole portion formed so as to penetrate therethrough from the first planar surface to the second planar surface.
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公开(公告)号：US20190295749A1
公开(公告)日：2019-09-26
申请号：US16302773
申请日：2017-05-08
Applicant: KOA CORPORATION
Inventor： Tamotsu ENDO
Abstract: A shunt resistor including a first terminal and a second terminal, each of the first terminal and the second terminal being made of a conductive metallic material and having a first plane, a second plane, and an outer periphery as side faces thereof. The first planes of the first terminal and the second terminal are opposite each other, and a resistive element is connected to the first planes so as to connect the first terminal and the second terminal. The joint area between the resistive element and each first plane is smaller than the area of the first plane. Each of the first terminal and the second terminal has formed therein a hole portion that penetrates therethrough from the first plane to the second plane.
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公开(公告)号：US20210311096A1
公开(公告)日：2021-10-07
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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Patent Agency Ranking
公开(公告)号：US20210190834A1
公开(公告)日：2021-06-24
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：US20200025802A1
公开(公告)日：2020-01-23
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：US20210293854A1
公开(公告)日：2021-09-23
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：US20200182914A1
公开(公告)日：2020-06-11
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：US20210158997A1
公开(公告)日：2021-05-27
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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