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Battery management system, battery and motor vehicle having a battery management system, and method for monitoring a battery

A management system and battery technology, applied in the field of battery management system, can solve the problems of expensive programming, high functional safety, high software cost, etc., and achieve the effect of improving safety and improving hardware redundancy.

Active Publication Date: 2014-05-07
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting deviations have to be corrected in the control unit 15 with high computational complexity, which leads to high software costs
A very complex calculation model for the plausibility check of the security of the system has to be used, which has to be programmed in a complex manner
Known topologies for monitoring battery cells require high functional safety and thus a high ASIL level and therefore require considerable software outlay

Method used

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  • Battery management system, battery and motor vehicle having a battery management system, and method for monitoring a battery
  • Battery management system, battery and motor vehicle having a battery management system, and method for monitoring a battery
  • Battery management system, battery and motor vehicle having a battery management system, and method for monitoring a battery

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Embodiment Construction

[0039] exist image 3 A battery system 30 according to the invention with a battery management system 31 for monitoring the battery cells 14 of the battery is shown in FIG. According to image 3 In the embodiment shown in , the accumulator is provided for supplying voltage at the terminals 12 , 13 and / or for charging via the terminals 12 , 13 . The battery cells 14 can be grouped into battery modules. A CSC 35 , 37 is assigned to a battery cell 14 or battery module. The CSCs 35, 37 are connected to the battery cells 14 and are provided for monitoring the battery cells 14, wherein the battery cells 14 are each double-monitored in the sense that there are two redundant groups of CSCs 35 and CSCs 37, as image 3 shown. The CSCs 35 , 37 are read by the control device 15 and controlled if necessary. Since according to the invention the unit modules are each monitored in parallel by two CSCs 35 , 37 , there is increased redundancy and thus increased functional safety. As a res...

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Abstract

The invention relates to a battery management system (31, 41), which has a plurality of first measuring units (42) that are each associated with at least one respective battery module of the battery in order to detect a measured variable. The battery management system (31, 41) also has a control device (15) having a first microcontroller (23) and a second microcontroller (25), a first communication connection (36) for transferring data between the first measuring units (42) and the control device, and several second measuring units (44) for detecting the measured variable from the battery modules of the battery in addition to the detection of the measured variable by the first measuring units (42). A second communication connection (34) is used to transfer data between the second measuring units (44) and the control device (15). The first microcontroller (23) is designed to evaluate measurement data detected by the first measuring units (42), and the second microcontroller (25) is designed to evaluate measurement data detected by the second measuring units (44) independently of the first microcontroller (23). The invention further relates to an associated method for monitoring a battery. Furthermore, the invention discloses a battery having a battery management system and to a motor vehicle having a battery management system.

Description

technical field [0001] The invention relates to a battery management system, a battery with the battery management system, a motor vehicle with the battery management system and a method for monitoring a battery. In particular, the invention relates to a battery management system and a related method for determining and evaluating at least one measured variable of a battery cell or battery module. Background technique [0002] In the future, whether in static applications such as wind power generation equipment, in vehicles such as hybrid and electric vehicles, or in consumer fields such as notebook computers and mobile phones, new storage battery systems will be more applied, will Very high demands are placed on its reliability, safety, efficiency and service life. [0003] Accumulators with lithium-ion technology are particularly suitable for these tasks. It stands out due to high energy density and low self-discharge. By definition, a lithium-ion battery consists of tw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18H01M10/48
CPCH01M10/48H01M10/42H01M2010/4271H01M2220/20B60L3/0092B60L2240/545B60L2240/547B60L2240/549B60L3/0046B60L3/04Y02T90/16B60L58/21B60L58/18B60L58/12Y02T10/70Y02E60/10G01R31/382
Inventor S·布茨曼
Owner ROBERT BOSCH GMBH
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