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:
Jul. 16, 2019
Filed:
Jan. 12, 2016
Robert Bosch Gmbh, Stuttgart, DE;
Harald Drings, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a cell coil () for a lithium-ion battery, comprising at least two sub-cells (), which are wound in a space-saving manner and are thermally coupled to each other. According to the invention, the at least two sub-cells () are electrically connected in parallel in normal operation, and, in the event of a fault, in particular in the event of an internal short circuit in at least one defective sub-cell (), at least one defective sub-cell () can be electrically separated from the at least one intact sub-cell (). Because of the at least one defective sub-cell () that can be immediately electrically separated from the intact sub-cells () by means of an electronic monitoring device () in the 'event of a fault', a high level of robustness of the cell coil () in respect of internal short circuits is achieved. Among other things, the intact sub-cells () act, because of the thermal coupling between the sub-cells (), as a damage-reducing heat sink for the waste heat that is released during the fast discharge of the affected defective sub-cell () generally occurring in the event of a short circuit.