Device for measuring a current flowing in a cable

• US 8,242,772 B2
• Filed: 11/23/2010
• Issued: 08/14/2012
• Est. Priority Date: 12/20/2004
• Status: Active Grant

• Current Assignee: CPS Technology Holdings, LLC, Kromberg & Schubert GmbH & Co. KG
• Original Assignee: Johnson Controls Technology Company (Johnson Controls International plc), Kromberg & Schubert GmbH & Co. KG
• Inventors: Muis, Pascal, Bages, Ghislain, Condamin, Bruno
• Primary Examiner(s): Hollington, Jermele M
• Assistant Examiner(s): CHAN, EMILY Y
• Application Number:
  US12/953,373
• Publication Number:
  US 20110062945A1
• Time in Patent Office: 630 Days
• Field of Search: 324/126, 324/117.R, 324/117.H, 320122-136, 439754-763
• US Class Current: 324/126
• 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 19/0092 measuring current only all subgroups of G01R19/00 take precedence
• CPC Class Codes: G01R 31/364 Battery terminal connectors with integrated measuring arrangements
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01R 11/287 Intermediate parts between battery post and cable end piece
• CPC Class Codes: Y10S 439/913 Condition determining device, e.g. oxygen sensor, accelerometer, ionizer chamber, thermocouple
• CPC Class Codes: Y10S 439/957 Auxiliary contact part for circuit adaptation
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

An exemplary embodiment relates to a measuring device for measuring a current flowing in a first cable. The measuring device includes a measuring shunt in the form of a plate connected in series with the first cable and associated with a measuring electronic card connected to a data transmission cable. The measuring shunt further includes a measuring portion of resistive alloy coupled to connection portions on either side of the measuring portion. The connection portions are integrally formed with the measuring portion, and the first cable is secured to at least one of the connection portions of the measuring shunt.

Claims

1. A system comprising a cable, a battery cable terminal and a measuring device for measuring a current flowing in the cable, the measuring device comprising:

a measuring shunt in the form of a plate connected in series with the cable and associated with a measuring electronic card connected to a data transmission cable, the measuring shunt comprising a measuring portion of resistive alloy connected to connection portions on either side of the measuring portion;

wherein the connection portions are made of resistive alloy integrally with the measuring portion, and the cable has one end secured to one face of a connection portion of the measuring shunt,

wherein the cable end is secured to the corresponding connection portion by autogenous welding,

wherein the connection portion remote from the cable end is secured directly by autogenous welding to a conductive tab integral with the battery cable terminal,

wherein the conductive tab extends perpendicularly to an axis of the battery cable terminal and the conductive tab has a total thickness less than the thickness of the battery cable terminal, and

wherein the measuring shunt includes holes defining the measuring portion of the measuring shunt, and the measuring electronic card includes connection pins engaged in the holes.