US 11,936,221 B2
Battery system, local electrical grid and disconnector
Michael Geiger, Memmingerberg (DE); and Wolfram Hennemann, Memmingen (DE)
Assigned to Sonnen GmbH, Wildpoldsried (DE)
Appl. No. 16/757,593
Filed by Sonnen GmbH, Wildpoldsried (DE)
PCT Filed Oct. 16, 2018, PCT No. PCT/DE2018/100852
§ 371(c)(1), (2) Date Apr. 20, 2020,
PCT Pub. No. WO2019/076405, PCT Pub. Date Apr. 25, 2019.
Claims priority of application No. 102017124567.7 (DE), filed on Oct. 20, 2017.
Prior Publication US 2020/0266638 A1, Aug. 20, 2020
Int. Cl. H02J 7/00 (2006.01); H01H 50/04 (2006.01); H01H 50/44 (2006.01)
CPC H02J 7/0031 (2013.01) [H01H 50/04 (2013.01); H01H 50/44 (2013.01); H01H 2050/049 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A battery system, in particular for use in a local electrical grid, the battery system comprising:
at least one battery module;
an output terminal electrically connected to the battery module and serving for charging and/or discharging the battery module from and/or into the local electrical grid;
a disconnector arranged between the battery module and at least one pole of the output terminal and configured to, in an open state, disconnect the electrical connection between the battery module and the at least one pole of the output terminal;
a first signal circuit configured to, in the event of a fault state identified by the battery module, bring about triggering of the disconnector in such a way as to interrupt the electrical connection between the battery module and the at least one pole of the output terminal; and
a second signal circuit configured to, in the event of a fault state identified by the battery module, bring about triggering of the disconnector in such a way that the electrical connection between the battery module and the at least one pole of the output terminal is interrupted,
wherein the disconnector comprises a first holding coil, which is supplied with current by the first signal circuit, and a second holding coil, which is supplied with current by the second signal circuit, wherein the holding coils are configured to hold the disconnector in a closed state, if they are both simultaneously supplied with current.