Shunt resistor
First Claim
1. A shunt resistor, at least a part of which has a resistive element with pre-set resistivity, and which is configured to bridge between two electrodes and detect a current value of a current flowing between the two electrodes by detecting a voltage drop in the resistive element, the shunt resistor comprising:
- two connecting parts affixed to the two electrodes via a conductive adhesive, respectively, and the connecting parts electrically connected to the two electrodes;
a bridging part bridging between the two connecting parts by being extended from one of the two connecting parts to the other one of the two connecting parts; and
two bonding wires used to detect a voltage drop in the resistive element,wherein the two bonding wires are bonded to the bridging part,the bridging part is of a protrusion shape with respect to the two connecting parts when viewed in a cross section along an extending direction of the bridging part and orthogonal to a bonding surface on which the two bonding wires are bonded,when viewed in a cross section along the extending direction of the bridging part and orthogonal to the bonding surface on which the two bonding wires are bonded,the bridging part includes an upper base and two leg parts to define a trapezoidal shape, the upper base includes two main parts that have a longer length than the two leg parts,the resistive element is provided at least to the upper base, andthe two bonding wires are bonded to the upper base.
1 Assignment
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Accused Products
Abstract
A shunt resistor, at least a part of which has a resistive element with pre-set resistivity, is configured to bridge between two electrodes and detect a current value of a current flowing between the electrodes by detecting a voltage drop in the resistive element. The shunt resistor includes two connecting parts affixed to the electrodes via a conductive adhesive, respectively, and the connecting parts electrically connected to the affixed electrodes, a bridging part bridging between the connecting parts by being extended from one of the connecting parts to the other one of the connecting parts, and two bonding wires used to detect a voltage drop in the resistive element. The bonding wires are bonded to the bridging part.
11 Citations
13 Claims
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1. A shunt resistor, at least a part of which has a resistive element with pre-set resistivity, and which is configured to bridge between two electrodes and detect a current value of a current flowing between the two electrodes by detecting a voltage drop in the resistive element, the shunt resistor comprising:
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two connecting parts affixed to the two electrodes via a conductive adhesive, respectively, and the connecting parts electrically connected to the two electrodes; a bridging part bridging between the two connecting parts by being extended from one of the two connecting parts to the other one of the two connecting parts; and two bonding wires used to detect a voltage drop in the resistive element, wherein the two bonding wires are bonded to the bridging part, the bridging part is of a protrusion shape with respect to the two connecting parts when viewed in a cross section along an extending direction of the bridging part and orthogonal to a bonding surface on which the two bonding wires are bonded, when viewed in a cross section along the extending direction of the bridging part and orthogonal to the bonding surface on which the two bonding wires are bonded, the bridging part includes an upper base and two leg parts to define a trapezoidal shape, the upper base includes two main parts that have a longer length than the two leg parts, the resistive element is provided at least to the upper base, and the two bonding wires are bonded to the upper base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A shunt resistor, at least a part of which has a resistive element with a pre-set resistivity, and which is configured to bridge between two electrodes and detect a current value of a current flowing between the two electrodes by detecting a voltage drop in the resistive element, the shunt resistor comprising:
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two connecting parts affixed to the two electrodes via a conductive adhesive, respectively, and the two connecting parts electrically connected to the two electrodes; a bridging part bridging between the two connecting parts by being extended from one of the two connecting parts to the other one of the two connecting parts; and two bonding wires used to detect a voltage drop in the resistive element, wherein the two bonding wires are bonded to the bridging part, the bridging part has conductive parts with smaller resistivity than the resistive element and is formed by sandwiching the resistive element between the conductive parts in an extending direction of the bridging part, the two bonding wires are bonded to the conductive parts sandwiching the resistive element, respectively, and two bonding positions of the two bonding wires are placed such that a distance between the two bonding positions in the extending direction is a minimum with the resistive element in between such that the two bonding wires directly contact the resistive element. - View Dependent Claims (10, 11)
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12. A shunt resistor, at least a part of which has a resistive element with pre-set resistivity, and which is configured to bridge between two electrodes and detect a current value of a current flowing between the two electrodes by detecting a voltage drop in the resistive element, the shunt resistor comprising:
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two connecting parts affixed to the two electrodes via a conductive adhesive, respectively, and the two connecting parts electrically connected to the two electrodes; a bridging part bridging between the two connecting parts by being extended from one of the two connecting parts to the other one of the two connecting parts, the bridging part including an upper base and a leg part; and two bonding wires used to detect a voltage drop in the resistive element, wherein the two bonding wires are bonded to the bridging part, the upper base includes two main parts connected to the resistive element, the leg part includes two intermediate parts, one of the two intermediate parts is connected to one of the two main parts and the one of the two connecting parts, the other one of the two intermediate parts is connected to the other one of the two main parts and the other one of the two connecting parts, the one of the two main parts has a length greater than a length of the one of the two intermediate parts, and the other one of the two main parts has a length greater than a length of the other one of the two intermediate parts. - View Dependent Claims (13)
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Specification