Title:
CIRCUIT ASSEMBLY FOR A BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/109093
Kind Code:
A3
Abstract:
The invention relates to a circuit assembly for an electric battery (1), comprising a plurality of individual cells (2.1, 2.2, 2.3) or modules electrically connected in series. A bypass diode (D1, D2, D3) is connected in parallel with each of the cells (2.1, 2.2, 2.3) or each of the modules in such a way that an anode of the bypass diode (D1, D2, D3) is connected to a negative pole of one of the cells (2.1, 2.2, 2.3) or of one of the modules and a cathode of the same bypass diode (D1, D2, D3) is connected to a positive pole of the same cell (2.1, 2.2, 2.3) or of the same module. Alternatively, a semiconductor switch (F1, F2, F3) is connected in parallel with each of the cells (2.1, 2.2, 2.3) or each of the modules, each of the cells (2.1, 2.2, 2.3) or each of the modules having a voltage-measuring unit (5) for measuring a cell voltage (U1, U2, U3) or module voltage, a current-measuring unit (6) being provided for measuring a current (I) through the battery (1), at least one control unit (7) being provided, which is connected to the voltage-measuring unit (5) of one of the cells (2.1, 2.2, 2.3) and to the current-measuring unit (6) and is designed in such a way that said control unit opens the semiconductor switch (F1, F2, F3) of the same cell (2.1, 2.2, 2.3) if a current (I) which, or the absolute value of which, is greater than or equal to a specifiable current threshold value (ITH) flows or if the cell voltage (U1, U2, U3) in question falls below or reaches a specifiable voltage threshold value (UTH) as the current (I) flows.
Inventors:
BOEHME URS (DE)
CANDIR AKIN (DE)
HASPEL ANDRÉ (DE)
CANDIR AKIN (DE)
HASPEL ANDRÉ (DE)
Application Number:
PCT/EP2019/081838
Publication Date:
August 13, 2020
Filing Date:
November 19, 2019
Export Citation:
Assignee:
DAIMLER AG (DE)
International Classes:
G01R31/396; H02J7/00
Foreign References:
| DE102010038882A1 | 2012-02-09 | |||
| EP2768110A1 | 2014-08-20 | |||
| US20020195994A1 | 2002-12-26 | |||
| US20080088277A1 | 2008-04-17 |
Attorney, Agent or Firm:
WELLER, Juergen (DE)
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