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Battery system for measuring battery module voltages

A battery system and battery technology, applied in the field of battery systems, can solve problems such as battery system failure, and achieve the effect of avoiding subsequent losses

Inactive Publication Date: 2013-08-28
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in battery cells 10 connected in series (such as figure 1 As shown), the failure of a single battery cell 10 will cause the failure of the entire battery system 100

Method used

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  • Battery system for measuring battery module voltages
  • Battery system for measuring battery module voltages
  • Battery system for measuring battery module voltages

Examples

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Embodiment Construction

[0022] image 3 A battery system 100 according to the invention is shown. A plurality of battery cells 10 are connected in series and integrated in a module 24 . In multiplexer 28 , the cell voltages of the individual battery cells 10 are combined and fed into communication bus 36 via analog-to-digital converter 32 and gateway 34 . The voltage evaluation is carried out by the microcontroller 38 in a known manner.

[0023] exist image 3 Two modules 24 each having a plurality of battery cells 10 are shown by way of example. According to further, not shown embodiments, further modules 24 can also be connected in series or in parallel with each other.

[0024] Each module 24 is associated with a module voltage acquisition unit 41 . The module voltage acquisition unit 41 taps in the voltage applied to the module 24 and feeds this voltage into an oscillator 42 . Oscillators 42 are each coupled via a capacitor circuit 44 to an input 46 of evaluation circuit 38 .

[0025] The ...

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Abstract

The invention proposes a battery system (100) having at least one module (24) which comprises a large number of battery cells (10), wherein each module (24) has an associated cell voltage detection unit (26) which is connected to an evaluation unit (38) by means of a communications bus (36). The invention makes provision for each module (24) to additionally comprise a module voltage detection circuit (41) which is connected to the evaluation unit (38). The invention also relates to a method for monitoring a battery system having at least one module comprising a large number of battery cells, wherein a voltage of each of the battery cells is detected and supplied to an evaluation unit by means of a cell voltage detection unit, wherein, in addition, a module voltage is separately detected and supplied to the evaluation unit. The invention also provides a motor vehicle having a battery system (100), wherein the battery system (100) is connected to a drive system of the motor vehicle.

Description

technical field [0001] The invention relates to a battery system, a method for monitoring a battery system and a motor vehicle having a battery system according to the invention. Background technique [0002] In the future, more and more new types of battery systems will be used, both in static applications and in vehicles such as hybrid vehicles and electric vehicles, and high requirements are placed on the reliability of such battery systems. [0003] The background to this high demand is that failure of the battery system can lead to failure of the entire system. In electric vehicles, for example, failure of the traction battery can lead to so-called "squatting". In addition, the failure of the battery can also cause safety-related problems. In wind power plants, for example, batteries are used in order to protect the plant from impermissible operating states in strong winds by means of blade control. [0004] The schematic circuit diagram of the storage battery system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48G01R31/36
CPCH01M10/0525H01M10/482H04Q9/00H04Q2209/84G01R31/396G01R31/3835Y02E60/10G01R31/382
Inventor S·布茨曼H·芬克
Owner ROBERT BOSCH GMBH
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