EXCHANGEABLE ENERGY STORAGE DEVICE

• US 20150024240A1
• Filed: 01/02/2013
• Published: 01/22/2015
• Est. Priority Date: 02/24/2012
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Seubert, Bernhard, Feuerstack, Peter, Berns, Steffen
• Application Number:
  US14/380,730
• Publication Number:
  US 20150024240A1
• Time in Patent Office: Days
• US Class Current: 429/50
• CPC Class Codes: B60L 15/007 Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
• CPC Class Codes: B60L 53/22 Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/24 Using the vehicle's propulsion converter for charging
• CPC Class Codes: B60L 58/18 of two or more battery modules
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: H01M 10/4207 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 2010/4271 Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/0024 Parallel/serial switching of connection of batteries to charge or load circuit
• CPC Class Codes: H02J 7/0025 Sequential battery discharge in systems with a plurality of batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

The invention relates to an energy storage device (1) having storage modules (3) which are connected in series in a supply section and which in each case comprises an energy storage cell module (5) having at least one energy storage cell (5a, 5k) and a coupling device (7) having coupling elements (7a, 7b, 7c, 7d) which are designed selectively to switch the energy storage cell module (5) into the supply section or to bridge said energy storage cell module. The energy storage cells or the energy storage cell modules can be exchanged.

Claims

1. An energy storage device (1) having:

a multiplicity of energy storage modules (3) that are series-connected in an energy supply string and comprise in each case;

an energy storage cell module (5) that comprises at least one energy storage cell (5a, 5k), and

a coupling device (7) having coupling elements (7a, 7b;

7c, 7d) that are configured to selectively connect the energy storage cell module (5) in to the energy supply string or bridge said energy storage cell module (5),

wherein at least one of the energy storage cells (5a, 5k) and the energy storage cell modules (5) are configured in such a manner that they can be exchanged.

2. The energy storage device (1) as claimed in claim 1, wherein the coupling devices (7) comprise power MOSFET switches or IGBT switches.

3. The energy storage device (1) as claimed in claim 1, wherein the coupling devices (7) are configured to bridge the energy storage cell modules (5) of all the energy storage modules (3) in the energy supply string if the energy storage device (1) is not in operation.

4. A system component (9) having:

an energy storage device (1) as claimed in claim 1, and

a coupling inductance (2a) that is coupled to an output connector (1a) of the energy storage device (1).

5. A system (100) having:

a system component (9) as claimed in claim 4,

a direct current voltage intermediate circuit (2b) that is coupled to the energy storage device (1) of the exchangeable system component (9),

a pulse width modulated inverter (4) that is coupled to the direct current voltage intermediate circuit (2b) and is supplied with an input voltage from the direct current voltage intermediate circuit (2b),

an electrical machine (6) that is coupled to the pulse width modulated inverter (4) and is supplied with a phase voltage by the pulse width modulated inverter (4), and

a control device (8) that is coupled to the coupling devices (7) and is configured to selectively control the coupling devices (7) of the energy storage device (1) for the purpose of providing a total output voltage of the energy storage device (1).

8. The energy storage device (1) as claimed in claim 2, wherein the coupling devices (7) are configured to bridge the energy storage cell modules (5) of all the energy storage modules (3) in the energy supply string if the energy storage device (1) is not in operation.

9. A system component (9) having:

an energy storage device (1) as claimed in claim 8, and

a coupling inductance (2a) that is coupled to an output connector (1a) of the energy storage device (1).

10. A system (100) having:

a system component (9) as claimed in claim 9,

a direct current voltage intermediate circuit (2b) that is coupled to the energy storage device (1) of the system component (9),

a pulse width modulated inverter (4) that is coupled to the direct current voltage intermediate circuit (2b) and is supplied with an input voltage from the direct current voltage intermediate circuit (2b),

an electrical machine (6) that is coupled to the pulse width modulated inverter (4) and is supplied with a phase voltage by the pulse width modulated inverter (4), and

a control device (8) that is coupled to the coupling devices (7) and is configured to selectively control the coupling devices (7) of the energy storage device (1) for the purpose of providing a total output voltage of the energy storage device (1).

6. A method (40) for exchanging an energy storage device (1) of an electrical system (100), comprising the steps of:

decoupling (41) a first energy storage device (1) from a direct current voltage intermediate circuit (2b) of the system (100), said first energy storage device having a multiplicity of energy storage modules (3) that are series-connected in an energy supply string and comprise in each case;

an energy storage cell module (5) that comprises at least one energy storage cell (5a, 5k), and

a coupling device (7) having coupling elements (7a, 7b;

7c, 7d) that are configured to selectively connect the energy storage cell module (5) into the energy supply string or bridge said energy storage cell module,

connecting (42) a second energy storage device (1) to the direct current intermediate circuit (2b) of the system (100), said second energy storage device (1) having a multiplicity of energy storage modules (3) that are series-connected in an energy supply string and comprise in each case;

an energy storage cell module (5) that comprises at least one energy storage cell (5a, 5k), and

a coupling device (7) having coupling elements (7a, 7b;

7c, 7d) that are configured to selectively connect the energy storage cell module (5) of the second energy storage device into the energy supply string or bridge said energy storage cell module of the second energy storage device,

controlling (43) the coupling elements (7a, 7b;

7c, 7d) of the coupling devices (7) of the second energy storage device (1) in dependence upon the operating parameters of at least one of the energy storage cell modules (5) and the energy storage cells (5a, 5k) of the second energy storage device (1).

7. The method (40) as claimed in claim 6, furthermore comprising the steps of:

determining (44) operating parameters of at least one of the energy storage cell modules (5) and the energy storage cells (5a, 5k) of the first energy storage device (1), and

emulating (45) determined operating parameters by virtue of correspondingly controlling the coupling elements (7a, 7b;

7c, 7d) of the coupling devices (7) of the second energy storage device (1) in dependence upon the operating parameters of at least one of the energy storage cell modules (5) and the energy storage cells (5a, 5k) of the second energy storage device (1).