Shunt resistance type current sensor
First Claim
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1. A shunt resistance type current sensor, comprising:
- a bus bar which includes a first connection part to be connected to a battery post which is an electrode of a battery, a second connection part to be connected to a stud bolt for fixing a wire harness, and a shunt resistance part which is located between the first connection part and the second connection part and acts as a path of current to be measured;
a circuit board which is disposed so as to oppose the bus bar;
a pair of terminals which electrically connect the bus bar and the circuit board; and
a voltage detector which is mounted on the circuit board and detects a magnitude of voltage applied between the pair of terminals in order to detect an amount of current to be measured flowing through the bus bar, whereinthe shunt resistance type current sensor is disposed on the battery, the bus bar is configured so that an area including the second connection part and an area including the first connection part are formed in a stepped manner via a bent part so as to relatively lower a position of the stud bolt toward the battery, and the second connection part is set at a position lower than an upper surface of the first connection part by a distance that is determined by a height of the bent part.
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Abstract
A shunt resistance type current sensor includes a bus bar, a circuit board, voltage detection terminals and a voltage detector for detecting a magnitude of voltage applied to the bus bar. The bus bar is constituted of a through hole to be connected to a battery post, a through hole to be connected to a stud bolt for fixing a wire harness, and a shunt resistance part located between the through hole for the battery post and the through hole for the wire harness. The bus bar is configured so that an area including the through hole and an area including the through hole are formed in a stepped manner via a bent part.
25 Citations
10 Claims
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1. A shunt resistance type current sensor, comprising:
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a bus bar which includes a first connection part to be connected to a battery post which is an electrode of a battery, a second connection part to be connected to a stud bolt for fixing a wire harness, and a shunt resistance part which is located between the first connection part and the second connection part and acts as a path of current to be measured; a circuit board which is disposed so as to oppose the bus bar; a pair of terminals which electrically connect the bus bar and the circuit board; and a voltage detector which is mounted on the circuit board and detects a magnitude of voltage applied between the pair of terminals in order to detect an amount of current to be measured flowing through the bus bar, wherein the shunt resistance type current sensor is disposed on the battery, the bus bar is configured so that an area including the second connection part and an area including the first connection part are formed in a stepped manner via a bent part so as to relatively lower a position of the stud bolt toward the battery, and the second connection part is set at a position lower than an upper surface of the first connection part by a distance that is determined by a height of the bent part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification