The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2017
Filed:
Dec. 30, 2014
Robert Bosch Gmbh, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a battery pack having a plurality of electrochemical battery cells, comprising a device for measuring a difference between two cell currents of two different battery cells, wherein a first battery cell has a first wound element, consisting of a first electrode layer and a second electrode layer, which causes a first magnetic field via a first of the cell currents, and a second battery cell has a second wound element, consisting of a third electrode layer and a fourth electrode layer, which causes a second magnetic field via a second of the cell currents, wherein the first and the second wound elements are arranged relative to each other such that the first magnetic field counteracts the second magnetic field in the case of the first and second cell current being rectified, wherein the battery pack additionally comprises a magnetic field sensor which is configured to measure a superimposed field consisting of the first magnetic field and the second magnetic field, and comprises an evaluating unit which is configured to determine a difference between the first and the second cell current from the measured superimposed field.