BATTERY STATUS DETECTION SENSOR

• US 20120126818A1
• Filed: 03/28/2011
• Published: 05/24/2012
• Est. Priority Date: 03/30/2010
• 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: Ishihara, Hideaki
• Granted Patent: US 8,988,077 B2
• Time in Patent Office: Days
• US Class Current: 324/426
• 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 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 13/6683 with built-in sensor
• CPC Class Codes: H01R 2201/26 for vehicles
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery condition detection sensor (1) for measuring characteristics of a battery (101) includes an electrically conductive battery post terminal (12) and a shunt resistor (13). The battery post terminal (12) is mounted to a battery post (102) provided in the battery (101). The shunt resistor (13) is electrically connected to the battery post terminal (12). The shunt resistor (13) is configured such that a connection terminal (52) of a wire harness (51) can be fixed thereto. The shunt resistor (13) has a rotation-blocking portion (inner walls of the insertion holes (15a, 15b)) for blocking rotation of the connection terminal (52).

Claims

1. A battery condition detection sensor for measuring characteristics of a battery, the battery condition detection sensor comprising:

an electrically conductive battery post terminal configured to be mounted to a battery post provided in the battery; and

a shunt resistor electrically connected to the battery post terminal,

wherein

the shunt resistor is configured such that a connection terminal fixed to a wire harness can be fixed thereto,

the shunt resistor has a rotation-blocking portion for blocking rotation of the connection terminal.

2. The battery condition detection sensor according to claim 1, wherein

at least one insertion recess is formed in the shunt resistor,

a protrusion provided at the connection terminal is inserted in the insertion recess, thereby blocking rotation of the connection terminal.

3. The battery condition detection sensor according to claim 2, wherein

more than one insertion recesses are formed, and an orientation of the wire harness can be changed by selecting which of the insertion recesses a protrusion provided at the connection terminal is to be inserted in.

4. The battery condition detection sensor according to claim 2, wherein

the shunt resistor has a wide portion, and the insertion recess is formed in the wide portion.

5. The battery condition detection sensor according to claim 1, wherein

a protrusion provided at the connection terminal is brought into contact with an outer edge portion of the shunt resistor, thereby blocking rotation of the connection terminal.

6. The battery condition detection sensor according to claim 5, wherein

an orientation of the wire harness can be changed by selecting a position where the protrusion of the connection terminal is brought into contact with the outer edge portion of the shunt resistor.

7. The battery condition detection sensor according to claim 1, wherein

a stud for fixing the connection terminal is fixed to the shunt resistor by press-fitting.