Battery or rechargeable-battery pack

A battery pack and battery pack technology, applied in the direction of secondary batteries, circuits, measuring electronics, etc., can solve the problems of high total voltage and inability to detect battery cell information signals, etc.

Inactive Publication Date: 2010-07-14
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For these conventional systems, however, correspondingly only a limited number of individual battery cells can be monitored, since typically more than 10-20 battery cells are required when each monitoring line is connected in parallel with the signal evaluation line The total voltage is already too high to be able to detect individual battery cell information signals

Method used

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  • Battery or rechargeable-battery pack
  • Battery or rechargeable-battery pack
  • Battery or rechargeable-battery pack

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Embodiment Construction

[0021] as available from figure 1 As seen in , the battery pack or battery pack 10 according to the first embodiment of the present invention comprises a plurality of individual voltage-providing battery cells 12 (rechargeable or non-rechargeable, such as battery cells or battery cells), The battery cells are each connected to a monitoring line 14 . The monitoring circuit 14 here monitors operating parameters of the battery cells 12 assigned to it, such as the cell voltage (overvoltage or undervoltage), temperature, internal pressure, internal resistance or humidity of the battery cells (in order to be able to detect the outflow of electrolyte) And provide the corresponding battery unit information. Such monitoring lines 14 are known in principle and are also used in conventional battery packs for monitoring individual battery cells.

[0022] Furthermore, a signal evaluation line 18 is provided, which is connected galvanically separately (potential-free) via an optocoupler 1...

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Abstract

The invention relates to an apparatus, in particular a battery or rechargeable-battery pack (10), which comprises a plurality of individual cells (12) which are connected to one another and supply voltage, wherein each cell (12) has an associated monitoring circuit (14) in order to monitor the operation of the cell (12) and in order to provide cell information as a function of this, and wherein each monitoring circuit (14) is coupled to a coupling arrangement (16) which produces a galvanically isolated status signal, as a function of the cell information.

Description

technical field [0001] The invention relates to an accumulator or battery pack having built-in monitoring lines for monitoring the operation of the individual voltage-supplying battery cells. Background technique [0002] Such accumulator packs or battery packs are used, for example, in notebook computers or power tools, where, for example, in the case of lithium-ion accumulators, the voltage of each individual cell is monitored and the monitoring circuit detects that the voltage of the cell falls below a predetermined value. output the functional failure of the battery unit to the charger or to the load when the limit value is . [0003] For these conventional systems, however, correspondingly only a limited number of individual battery cells can be monitored, since typically more than 10-20 battery cells are required when each monitoring line is connected in parallel with the signal evaluation line The total voltage is already too high to detect the individual cell inform...

Claims

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Application Information

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IPC IPC(8): H01M10/48
CPCY02E60/12H01M10/482G01R31/3658G01R31/396Y02E60/10
Inventor A·奥斯沃尔德T·海因里希
Owner ROBERT BOSCH GMBH
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