Battery state detection apparatus

Patent metadata

Field	Value
Publication number	US-10060989-B2
Application number	US-201414900131-A
Country	US
Kind code	B2
Filing date	Jun 10, 2014
Priority date	Jun 20, 2013
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

A board connection terminal ( 15 ) is connected to a circuit board that detects a current having flowed through a resistor element ( 10 ). The board connection terminal ( 15 ) includes an intermediate part ( 31 ) and two connecting parts ( 30 ) integrated with one another. The intermediate part ( 31 ) has a substantially linear shape, and is connected to a shunt resistor ( 7 ). The two connecting parts ( 30 ) have proximal ends thereof located at opposite ends of the intermediate part ( 31 ), and protrude in a direction substantially perpendicular to the intermediate part ( 31 ), to be connected to the circuit board. The two connecting parts ( 30 ) are arranged substantially in parallel to each other. The board connection terminal ( 15 ) comprises two board connection terminals ( 15 ) that are arranged with the resistor element ( 10 ) sandwiched therebetween. Contact resistance between the intermediate part ( 31 ) and the shunt resistor ( 7 ) is lower than conductor resistance of the intermediate part ( 31 ).

First claim

The invention claimed is:

1. A battery state detection apparatus comprising:
a shunt resistor including a resistor element; and
a board connection terminal connected to a circuit board that detects a current having flowed through the shunt resistor, wherein:
the board connection terminal comprises including an intermediate part and two connecting parts integrated with one another,
the intermediate part having a substantially linear shape and connected to the shunt resistor, and
the two connecting parts having proximal ends thereof located at opposite ends of the intermediate part, and protruding in a direction substantially perpendicular to the intermediate part, to be connected to the circuit board, the two connecting parts being arranged substantially in parallel to each other,

the board connection terminal is arranged such that the two board connection terminals sandwich the shunt resistor therebetween, and

a first contact resistance between the intermediate part and the shunt resistor is lower than a second conductor resistance of the intermediate part.

2. The battery state detection apparatus according to claim 1 , wherein the board connection terminal comprises four connecting parts arranged so as to define corner points of a rectangle when seen in a longitudinal direction of the connecting parts.

3. The battery state detection apparatus according to claim 1 , wherein the intermediate part is connected to the shunt resistor by welding.

4. The battery state detection apparatus according to claim 1 , wherein a proximal end portion of a first connecting part of the two connecting parts has a first width that is wider than a second width of a distal end portion of the first connecting part, and wherein the two connecting parts are connected to the circuit board.

5. The battery state detection apparatus according to claim 1 , wherein the circuit board is electrically connected to a first connecting part of the two connecting parts of the board connection terminal.

Assignees

• Furukawa Electric Co Ltd
• Furukawa Automotive Systems Inc

Inventors

• Yoshioka Kenichi
• Saito Shinya
• Watanabe Yuuichi
• Matsui Yuji

Classifications

• G01R1/203

  Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts (resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R) · CPC title

• H01R12/55

  characterised by the terminals · CPC title

• G01R31/364 Primary

  Battery terminal connectors with integrated measuring arrangements · CPC title

• H01R11/287

  Intermediate parts between battery post and cable end piece · CPC title

• H01M10/4285

  Testing apparatus · CPC title