Traction battery having increased reliability

• US 8,564,245 B2
• Filed: 12/15/2009
• Issued: 10/22/2013
• Est. Priority Date: 02/06/2009
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Bosch, Andreas, Gaebler, Sven, Fink, Holger
• Primary Examiner(s): PATEL, DHARTI HARIDAS
• Application Number:
  US13/138,380
• Publication Number:
  US 20110286137A1
• Time in Patent Office: 1,407 Days
• Field of Search: 320/122
• US Class Current: 320/116
• 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: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• 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 50/574 Devices or arrangements for the interruption of current
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The invention relates to a traction battery having a first battery cell group and a second battery cell group. A first connection of the first battery cell group is connected to a first battery pole by a charging and disconnecting device, a second connection of the first battery cell group is connected to a first service plug connection, a first connection of the second battery cell group is connected to a second service plug connection, and a second connection of the second battery cell group is connected to a second battery pole by a disconnecting device. The first service plug connection and the second service plug connection can be short-circuited by an external service plug. According to the invention, such a traction battery comprises a first jumper connected between the first battery pole and the first service plug connection, by means of which the first battery pole and the first service plug connection can be short-circuited, and/or a second jumper device connected between the second battery pole and the second service plug connection, by means of which the second battery pole and the second service plug connection can be short-circuited.

Claims

1. A battery, in particular a traction battery, having:

a first battery cell group and a second battery cell group, each cell group including a plurality of battery cells, in which

a first terminal of the first battery cell group is connected to a first battery pole via a charging and disconnecting device,

a second terminal of the first battery cell group is connected to a first surface plug connection,

a first terminal of the second battery cell group is connected to a second surface plug connection,

a second terminal of the second battery cell group is connected to a second battery pole via a charging and disconnecting device, and

the first surface plug connection and the second surface plug connection can be short-circuited via an external surface plug; and

a first jumper device, which is connected between the first battery pole and the first surface plug connection, by way of which jumper device the first battery pole and the first surface plug connection can be short-circuited; and

a second jumper device, which is connected between the second battery pole and the second surface plug connection, by way of which jumper device the second battery pole and the second surface plug connection can be short-circuited,

wherein the charging and disconnecting devices associated with the first and second terminals are separate from each other and each includes a separate charger connected in parallel to a corresponding disconnecting device.

2. The battery as defined by claim 1, further having:

a first detection device, which detects a function of the first battery cell group and upon a malfunction of the first battery cell group causes an opening of the connection of the first terminal of the first battery cell group with the first battery pole via the charging and disconnecting device and a closure of the connection between the first battery pole and the first surface plug connection via the first jumper device; and

/or

a second detection device, which detects a function of the second battery cell group and upon a malfunction of the second battery cell group causes an opening of the connection of the second terminal of the second battery cell group with the second battery pole via the disconnecting device and a closure of the connection between the second battery pole and the second surface plug connection via the second jumper device.