US 10,870,367 B2Granted

Switchable storage system for a vehicle

AssigneeBayerische Motoren Werke Aktiengesellschaft

InventorsChristian Knobel, Gerhard Hofer, Daniel Gleyzes

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Abstract

A storage system provides electrical power for driving a vehicle. The storage system has a first and a second storage module for storing electrical energy. The storage system includes a switching unit which is configured for connecting the first storage module and the second storage module in series for a charging operation and in parallel for driving the vehicle. The storage system includes a control unit which is configured to implement measures in order to reduce a difference between a state of charge of the first storage module and a state of charge of the second storage module in preparation for a parallel connection of the first storage module to the second storage module.

Claims11

Dependent claims

A storage system for providing electric power for propulsion of a vehicle, the storage system comprising:

a first and a second storage module for storage of electrical energy;
a switch, which is configured to connect the first storage module and the second storage module in series for execution of a charging process, and in parallel for propulsion of the vehicle;
and
an electronic control unit configured to:
implement one or more measures in order to reduce a difference of a state of charge of the first storage module and a state of charge of the second storage module, in preparation for the parallel connection of the first storage module to the second storage module;
determine a switching time point, at which the power take-up of the drive system of the vehicle from the storage system is lower than or equal to a predefined power threshold value;
and
cause the switch, to arrange the second storage module, at the switching time point, in parallel with the drive system.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/172,235Filed 26 Oct 2018 · continuation
Priority: DE 10 2016 207 27228 Apr 2016
Published: US 2019/0061551 A128 Feb 2019
Granted: 22 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B60L 58/19
Of two or more battery modules: switching between serial connection and parallel connection of battery modules
B60L 58/22
Of two or more battery modules: balancing the charge of battery modules
H02J 7/575
Acting upon multiple batteries simultaneously or sequentially: parallel/serial switching of connection of batteries to charge or load circuit
H02J 7/52
Acting upon multiple batteries simultaneously or sequentially: for charge balancing, e.g. equalisation of charge between batteries

Family

PCT/EP2017/053203Parent of this continuation · filed 14 Feb 2017
US 2019/0061551 A1Pre-grant publication · published 28 Feb 2019
US 10,870,367 B2This patent

From the US filing history. Foreign family members aren’t listed.

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