BATTERY STATE DETECTION APPARATUS AND METHOD FOR MANUFACTURING SAME

• US 20160141731A1
• Filed: 06/30/2014
• Published: 05/19/2016
• Est. Priority Date: 07/03/2013
• Status: Active Grant

• Current Assignee: Furukawa Automotive Systems Incorporated (Furukawa Electric Company Limited), Furukawa Electric Company Limited
• Original Assignee: Furukawa Automotive Systems Incorporated (Furukawa Electric Company Limited), Furukawa Electric Company Limited
• Inventors: WASAKI, Furnitaka, TANIGAWA, Tomoaki, MOTOSUGI, Norihito, TANAKA, Yoshikazu
• Granted Patent: US 10,388,994 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01R 1/203 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 Class Codes: G01R 31/364 Battery terminal connectors with integrated measuring arrangements
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 50/553 Terminals adapted for prismatic, pouch or rectangular cells
• CPC Class Codes: H01M 50/569 Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals battery terminal connectors with integrated measuring arrangements G01R31/364
• CPC Class Codes: H01R 11/287 Intermediate parts between battery post and cable end piece
• CPC Class Codes: H01R 13/6616 with resistor
• CPC Class Codes: H01R 13/6658 on printed circuit board H01R13/6666 - H01R13/6691 take precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery state detection device (1) includes a shunt resistor (7) and a battery post terminal (4). The shunt resistor (7) includes a second conductor part (12) in the shape of a flat plate. The battery post terminal (4) includes a battery post connecting part (20) for connection to a battery post, and a shunt resistor connecting part (22) for connection to the second conductor part (12) of the shunt resistor (7). The shunt resistor connecting part (22) is in the shape of a flat plate. The second conductor part (12) of the shunt resistor (7) and the shunt resistor connecting part (22) of the battery post terminal (4) are connected to each other by welding.

Claims

1. A battery state detection device comprising:

a shunt resistor; and

a battery post terminal,

the shunt resistor including a conductor part having, at least partially, a flat shape,

the battery post terminal including

a battery post connecting part that is to be connected to a battery post, and

a shunt resistor connecting part that is to be connected to the conductor part of the shunt resistor, the shunt resistor connecting part having a flat shape,

the conductor part of the shunt resistor and the shunt resistor connecting part of the battery post terminal being connected to each other by welding.

2. The battery state detection device according to claim 1, comprising:

a circuit board that detects a current having flowed through the shunt resistor; and

a casing that houses the circuit board, wherein

the casing is molded while the shunt resistor and the battery post terminal connected to each other by the welding are at least partially inserted in the casing,

the battery post terminal includes an exposure boundary portion having a flat shape, the exposure boundary portion being a portion at the boundary between a portion of the battery post terminal inserted in the casing and a portion of the battery post terminal exposed to the outside of the casing.

3. The battery state detection device according to claim 2, wherein

portions of the shunt resistor and the battery post terminal inserted in the casing are provided with bevels.

4. The battery state detection device according to claim 1, wherein

the shunt resistor includes a harness connecting part that is to be connected to a harness,

the battery post terminal is provided with a boss portion that extends along an imaginary line connecting the battery post connecting part to the harness connecting part.

5. The battery state detection device according to claim 1, wherein

the battery post terminal includes a bent portion and a reinforcement wall, the bent portion being a cranked portion provided between the shunt resistor connecting part and the battery post connecting part, the reinforcement wall being connected to a lateral end surface of the bent portion.