Energy supply system comprising an energy storage device and method for actuating coupling devices of the energy storage device

Patent metadata

Field	Value
Publication number	US-9608544-B2
Application number	US-201314427538-A
Country	US
Kind code	B2
Filing date	Jul 30, 2013
Priority date	Sep 14, 2012
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

The invention relates to an energy supply system having an energy storage device. The energy storage device has a plurality of energy storage modules that are serially connected in at least one energy supply branch, each comprising an energy storage cell module having at least one energy storage cell, and a coupling device having coupling elements configured to selectively switch the energy storage cell module into the respective energy supply branch, or to circumvent same, and comprising a plurality of driver devices, each dedicated to one of the energy storage modules, and coupled to one of the energy storage modules, and which are configured to actuate the coupling elements of the coupling devices according to a driver signal. The energy supply system further comprises a control device, which is coupled to the driver devices by way of a control signal line, and which is configured to emit a control signal to the driver devices by way of the control signal line, which is provided with a physical control signal parameter, into the value of which a control mode for the driver devices is coded. The driver devices are configured to receive the control signal, and to generate the respective driver signal subject to the value of the control signal parameter, and a control mode assignment that can be predetermined.

First claim

The invention claimed is:

1. An energy supply system, comprising:
an energy storage device, which has a multiplicity of energy storage modules, which are connected in series in at least one energy supply branch , each energy storage module including
an energy storage cell module, which has at least one energy storage cell, and
a coupling device including coupling elements, which are configured to switch the energy storage cell module selectively into the respective energy supply branch or to bypass said energy storage cell module; and
a multiplicity of driver devices, which are assigned in each case to one of the energy storage modules and are coupled to, in each case, one of the energy storage modules, and which are configured to actuate the coupling elements of the coupling devices in accordance with a driver signal,
a control device, which is coupled to the driver devices via a control signal line, and which is configured to output a control signal to the driver devices via the control signal line which control signal has a physical control signal parameter, with a control mode for the driver devices being encoded in the value of said control signal parameter; and
a configuration line, which couples the control device to the driver devices,
wherein the driver devices are configured to receive the control signal and to generate the respective driver signal depending on the value of the control signal parameter and a presettable control mode assignment, and
wherein the control device is configured to output a configuration signal via the configuration line to the driver devices, which configuration signal configures the respective presettable control mode assignment of the driver devices.

2. The energy supply system as claimed in claim 1 , wherein the control signal is a serially transmitted digital bit string, and wherein the physical control signal parameter is encoded in the bit string.

3. The energy supply system as claimed in claim 1 , further comprising:
a reset line, which couples the control device to the driver devices,
wherein the control device is configured to output a reset signal via the reset line to the driver devices, which reset signal sets all of the coupling elements of the coupling devices to the open state.

4. The energy supply system as claimed in claim 1 , further comprising:
a feedback line which, together with the control signal line, forms a feedback loop for the control device,
wherein the control device is configured to receive the control signal via the feedback line and to check, depending on the fed-back control signal, whether the control signal is output fault-free to all of the driver devices and there is no defect in the control signal line.

5. The energy supply system as claimed in claim 1 , wherein the control signal is a pulse-width-modulated digital signal, and wherein the physical control signal parameter is the pulse width of the pulse-width-modulated digital signal.

6. The energy supply system as claimed in claim 1 , wherein the control signal is a frequency-modulated digital signal, and wherein the physical control signal parameter is the frequency of the frequency-modulated digital signal.

7. The energy supply system as claimed in claim 1 , wherein the control signal is an analog voltage signal, and wherein the physical control signal parameter is the voltage value of the analog voltage signal.

8. A method for actuating coupling devices of an energy storage device , which has a multiplicity of energy storage modules connected in series in at least one energy supply branch, which energy storage modules each include an energy storage cell module, which has at least one energy storage cell, and a coupling device having coupling elements, which are configured to switch the energy storage cell module selectively into the respective energy supply branch or to bypass said energy storage cell module the method comprising the following steps:
generating a control signal, which has a physical control signal parameter, with a control mode for the driver devices being encoded in the value of said control signal parameter;
transmitting the control signal to driver devices, which are each assigned to one of the energy storage modules and are coupled to, in each case, one of the energy storage modules, and which are configured to actuate the coupling elements of the coupling devices in accordance with a driver signal, via a control signal line,
generating a respective driver signal for the coupling elements of the coupling devices by means of the driver devices depending on the value of the control signal parameter and a presettable control mode assignment; and
generating a configuration signal, which is output via a configuration line to the driver devices, wherein the configuration signal configures the respective presettable control mode assignment of the driver devices.

9. The method as claimed in claim 8 , wherein the control signal is a serially transmitted digital bit string, and wherein the physical control signal parameter is encoded in the bit string.

10. The method as claimed in claim 8 , wherein the control signal is a pulse-width-modulated digital signal, and wherein the physical control signal parameter is the pulse width of the pulse-width-modulated digital signal.

11. The method as claimed in claim 8 , wherein the control signal is a frequency-modulated digital signal, and wherein the physical control signal parameter is the frequency of the frequency-modulated digital signal.

12. The method as claimed in claim 8 , wherein the control signal is an analog voltage signal, and wherein the physical control signal parameter is the voltage value of the analog voltage signal.

Assignees

• Bosch Gmbh Robert

Inventors

• Schuler Klaus-Juergen
• Mittag Andreas
• Zeltwanger Thomas
• Grabs Manfred

Classifications

• H02J7/50 Primary

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H02M7/537 Primary

  using semiconductor devices only, e.g. single switched pulse inverters · CPC title

• H02M7/4835

  comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage · CPC title

• H02M7/483

  Converters with outputs that each can have more than two voltages levels · CPC title

• H02M7/49

  Combination of the output voltage waveforms of a plurality of converters · CPC title