Method for charging a battery

Patent metadata

Field	Value
Publication number	US-9331504-B2
Application number	US-201113988922-A
Country	US
Kind code	B2
Filing date	Nov 18, 2011
Priority date	Nov 23, 2010
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

The disclosure relates to a method for charging a battery having at least one battery cell. A first connection of a charging device is connected to a first pole of the at least one battery cell by a rectifying device. The rectifying device is set up such that charging current can flow. The disclosure further relates to a charging device, a battery, and a motor vehicle, which are configured to carried out the method.

First claim

The invention claimed is:

1. A battery comprising:
at least one battery cell having a positive pole and a negative pole, the at least one battery cell being configured to provide power for a load;
positive and negative battery terminals configured to provide power to the load from the at least one battery cell;
positive and negative charging terminals configured to connect to a charging device to charge the at least one battery cell, the positive and negative charging terminals being separate from the positive and negative battery terminals;
a first disconnection device connected in a first current path between the positive pole of the at least one battery cell and the positive battery terminal, the first disconnection device being configured to selective disconnect the positive pole of the at least one battery cell from the positive battery terminal; and
a rectifying device connected in a second current path between the positive pole of the at least one battery cell and the positive charging terminal, the rectifying device configured to allow current to flow from the positive charging terminal to the positive pole of the at least one battery cell, the second current path not overlapping with the first current path.

2. The battery according to claim 1 , further comprising:
a second disconnection device connected in third current path between the negative pole of the at least one battery cell and the negative battery terminal, the second disconnection device being configured to selectively disconnect the negative pole of the at least one battery cell from the negative battery terminal.

3. The battery according to claim 2 , wherein the negative charging terminal is connected directly to the negative battery terminal.

4. The battery according to claim 2 , further comprising:
a third disconnection device connected in a fourth current path between the negative pole of the at least one battery cell and the negative charging terminal, the third disconnection device being configured to selectively disconnect the negative pole of the at least one battery cell from the negative charging terminal.

5. The battery according to claim 1 , wherein:
the battery is included in an electric motor vehicle, and
a drive system of the electric motor vehicle is connected to the battery.

6. A circuit for charging a battery comprising:
a charging device having positive and negative connections and configured to provide power via the positive and negative connections; and
a battery comprising:
at least one battery cell having a positive pole and a negative pole, the at least one battery cell being configured to provide power for a load;
positive and negative battery terminals configured to provide power to a load from the at least one battery cell;
positive and negative charging terminals respectively connected to the positive and negative connections of the charging device to charge the at least one battery cell, the positive and negative charging terminals being separate from the positive and negative battery terminals;
a first disconnection device connected in a first current path between the positive pole of the at least one battery cell and the positive battery terminal, the first disconnection device being configured to selective disconnect the positive pole of the at least one battery cell from the positive battery terminal; and
a rectifying device connected in a second current path between the positive pole of the at least one battery cell and the positive charging terminal, the rectifying device configured to allow current to flow from the positive charging terminal to the positive pole of the at least one battery cell, the second current path not overlapping with the first current path.

7. A method of charging a battery comprising:
providing a battery including (i) at least one battery cell having a positive pole and a negative pole, the at least one battery cell being configured to provide power for a load, (ii) positive and negative battery terminals configured to provide power to a load from the at least one battery cell, (iii) positive and negative charging terminals configured to connect to a charging device to charge the at least one battery cell, the positive and negative charging terminals being separate from the positive and negative battery terminals, (iv) a first disconnection device connected in a first current path between the positive pole of the at least one battery cell and the positive battery terminal, the first disconnection device being configured to selective disconnect the positive pole of the at least one battery cell from the positive battery terminal, and (v) a rectifying device connected in a second current path between the positive pole of the at least one battery cell and the positive charging terminal, the rectifying device configured to allow current to flow from the positive charging terminal to the positive pole of the at least one battery cell, the second current path not overlapping with the first current path;
connecting positive and negative connections of a charging device to a the positive and negative charging terminals, the charging device configured to provide power via the positive and negative connections; and
operating the charging device to provide a charging current that flows through the rectifying device of the battery to charge the at least one battery cell of the battery.

Assignees

• Butzmann Stefan
• Bosch Gmbh Robert

Inventors

• Butzmann Stefan

Classifications

• B60L2210/30

  AC to DC converters · CPC title

• H01M10/425

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M10/44

  Methods for charging or discharging (circuits for charging H02J7/00) · CPC title

• H02H7/18

  for batteries; for accumulators · CPC title

• H02J7/1415

  with a generator driven by a prime mover other than the motor of a vehicle · CPC title