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:
Mar. 30, 2021
Filed:
Jun. 07, 2019
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Thomas Hammerschmidt, Unterschleissheim, DE;
Jose Lopez De Arroyabe, Munich, DE;
Simon Nuernberger, Bad Aibling, DE;
Jan Philipp Schmidt, Holzmaden, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A safety switch device connects a heating unit for at least one battery cell of a high-voltage battery of a motor vehicle to a power supply connection that provides a heating current for the heating unit. The device includes: a first controllable switching element arranged in a heating current transmission path, which is designed to receive a control signal supplied by a unit external to the high-voltage battery via a signal transmission path of the safety switch device and to generate heating current transmission between the heating unit and the power supply connection according to the received control signal; a separating unit arranged in the heating current transmission path, for interrupting the heating current transmission in the event of failure of the first switching element; and a transmission unit arranged in the signal transmission path, which is designed to transmit the control signal potential-free to the first switching element, for the galvanic separation of the high-voltage battery and the unit.