Battery and Motor Vehicle

• US 20140001844A1
• Filed: 07/01/2013
• Published: 01/02/2014
• Est. Priority Date: 07/02/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Inventors: Krieg, Berengar
• Granted Patent: US 9,840,209 B2
• Time in Patent Office: Days
• US Class Current: 307/10.7
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2260/162 of electrical cells or capacitors
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 58/14 Preventing excessive discharging
• CPC Class Codes: B60L 58/15 Preventing overcharging
• CPC Class Codes: B60L 58/21 having the same nominal voltage
• CPC Class Codes: B60R 16/005 Electro-mechanical devices, e.g. switched electric switches in general H01H
• CPC Class Codes: H02J 7/00302 Overcharge protection
• CPC Class Codes: H02J 7/00306 Overdischarge protection
• CPC Class Codes: H02J 7/00308 Overvoltage protection
• CPC Class Codes: H02J 7/0031 using battery or load disconnect circuits H02J9/002 takes precedence
• CPC Class Codes: H02J 7/14 for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

The present disclosure relates to a battery including a voltage-measuring apparatus, at least one reversible disconnection apparatus, and a circuit of electronic components. The voltage-measuring apparatus is configured to determine a battery voltage. The at least one reversible disconnection apparatus is configured to electrically disconnect the battery from an electrical supply system, such that the disconnection can be cancelled again, for charging or discharging the battery. The circuit of electronic components is a circuit configured to open the disconnection apparatus in the event of an undervoltage and/or an overvoltage of the battery.

Claims

1. A battery comprising:

a voltage-measuring apparatus configured to determine a battery voltage;

at least one reversible disconnection apparatus configured to electrically disconnect the battery from an electrical supply system, such that the disconnection can be cancelled again, for charging or discharging the battery;

a circuit including electronic components, the circuit being configured to open the at least one reversible disconnection apparatus in the event of at least one of (i) a deep discharge, and (ii) an overvoltage of the battery; and

a holding apparatus configured to be activated and, when activated, configured to deactivate an effect of the circuit by actively holding the at least one reversible disconnection apparatus closed.

2. The battery according to claim 1, wherein:

the at least one reversible disconnection apparatus is a semiconductor switch or a bistable relay, and

opening the at least one reversible disconnection apparatus interrupts a supply of voltage to the circuit.

3. The battery according to claim 1, wherein the circuit further includes at least one comparator configured to compare a specific battery voltage with at least one threshold value.

4. The battery according to claim 3, wherein:

the at least one threshold value comprises a deep-discharge threshold value, and the circuit opens the at least one reversible disconnection apparatus if the specific battery voltage is lower than the deep-discharge threshold value.

5. The battery according to claim 4, wherein the holding apparatus is activated after the specific battery voltage falls below the deep-discharge threshold value, and remains activated for a predetermined period of time.

6. The battery according to claim 3, wherein:

the at least one threshold value comprises an overvoltage threshold value, and

the circuit is configured to open the at least one reversible disconnection apparatus if the specific battery voltage is higher than the overvoltage threshold value.

7. The battery according to claim 6, wherein the holding apparatus is activated in response to the specific battery voltage exceeding the overvoltage threshold value, and remains activated for a further predetermined period of time.

8. The battery according to claim 1, wherein the circuit further includes a receiving apparatus configured to receive an activation signal for activating the holding apparatus.

9. The battery according to claim 1, wherein:

the battery is configured to provide a supply of voltage to the circuit, and

opening the at least one reversible disconnection apparatus comprises interrupting the supply of voltage to the circuit.

10. A motor vehicle comprising:

an electrical supply system; and

a battery including

a voltage-measuring apparatus configured to determine a battery voltage,

at least one reversible disconnection apparatus configured to electrically disconnect the battery from the electrical supply system, such that the disconnection can be cancelled again, for charging or discharging the battery,

a circuit including electronic components, the circuit being configured to open the at least one reversible disconnection apparatus in the event of at least one of (i) a deep discharge, and (ii) an overvoltage of the battery, and

a holding apparatus configured to be activated and, when activated, configured to deactivate the effect of the circuit by actively holding the at least one reversible disconnection apparatus closed.