Patent ID: 9513341
Filing Date: 2016-12-06
CPC Classification: G01R,H01M,Y02E

Claim Text:
1. A current detection apparatus for detecting a current from a battery flowing through a harness, comprising: a resistor having a first fixed portion at one end and a second fixed portion at the other end, the first fixed portion being secured and electrically connected to a battery-side wiring and the second fixed portion being secured and electrically connected to the harness; a circuit board provided thereon with a current detection circuit for detecting a current flowing through the resistor on the basis of a potential difference between two positions along a current carrying path between the first and second fixed portions of the resistor; and a casing for housing the resistor and the circuit board, wherein the resistor comprises a current carrying member that provides the current carrying path between the first fixed portion and the second fixed portion and a lead member via which the potential difference between the two positions is acquired, the first fixed portion, the second fixed portion, and an entirety of the current carrying member are disposed on the top surface of the battery, and the circuit board is disposed on a side of the battery, the current carrying member is electrically connected to the circuit board through the lead member, the current carrying member and the lead member are separate members, and the lead member comprises a first lead conductor and a second lead conductor, the first lead conductor electrically connecting the first fixed portion of the current carrying member and the circuit board, the second lead conductor electrically connecting the second fixed portion of the current carrying member and the circuit board, each of the first and second lead conductors including at least a portion extending along the top surface of the battery and in parallel with the side of the battery, the current carrying member is formed by folding the conductor plate twice in a direction perpendicular to the top surface of the battery, the conductor plate comprising a straight elongated rectangular plate, the current carrying member includes a first conductor panel connected to the first fixed portion and having a first fold at one end, a second conductor panel having one end joined with the first conductor panel at the first fold and an opposite end at the second fold, and a third conductor panel having one end joined with the second conductor panel at the second fold and connected to the second fixed portion at the other end, the extension direction of the first conductor panel and the extension direction of the second conductor panel are inclined at a first specific angle to each other, and the extension direction of the second conductor panel and the extension direction of the third conductor panel are inclined at a second specific angle to each other.