Patent · US Active

Protective device, battery, motor vehicle, and method for switching off a battery cell

US11233298B2 · kind B2 · utility

2Cited by

0References

9Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Michael Hinterberger · Großmehring, DE
Berthold Hellenthal · Schwanstetten, DE
Peter Pilgram · Leibnizweg, DE

Key dates

Filing date	Feb 5, 2020
Grant date	Jan 25, 2022
Priority date	—
Expiry date	Jun 7, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A protective device for switching off a battery cell of a motor vehicle battery in the event of an electrical short-circuit. The battery cell has two cell terminals and an energy storage unit for storing energy. The energy storage unit is connected to the cell terminals in an electrically conductive manner in order to provide cell voltage to the cell terminals. The protective device detects the short-circuit as a function of at least the cell voltage affecting the battery cell. In this case, the battery cell has the protective device and at least one switching device, which is arranged between the energy storage unit and at least one of the cell terminals. The protective device isolates the energy storage unit from the at least one of the cell terminals in order to switch off the battery cell by the switching device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.