Unlock instant, AI-driven research and patent intelligence for your innovation.

Battery management system, battery system, motor vehicle and method for generating a periodic alternating voltage

A technology of battery system and management system, applied in the field of battery management system

Inactive Publication Date: 2015-05-13
ROBERT BOSCH GMBH +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The desired (ideal) sine for exemplary application purposes, but which only has a voltage value greater than or equal to zero, is marked with the reference numeral 80-b

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Battery management system, battery system, motor vehicle and method for generating a periodic alternating voltage
  • Battery management system, battery system, motor vehicle and method for generating a periodic alternating voltage
  • Battery management system, battery system, motor vehicle and method for generating a periodic alternating voltage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In a first exemplary embodiment of the invention, a balancing method between a plurality of modules of a multiphase battery system, ie a battery system with BDI, is described. The equalization method includes a prioritization of the battery modules for generating a sinusoidal voltage curve. Wherein a module whose power performance is higher the higher priority it has for use in the build. This can be determined by means of the state of charge. Alternatively or additionally, the wear state of the module can be taken into account, wherein a lower wear state is assigned a higher priority for use in the generation.

[0034] The state of wear of a module can be estimated, perhaps by means of the entire duration that the module has been used. Additionally or alternatively, the determination of the state of wear can be supported by one or more measurements on the module, for example internal resistance measurements and / or capacity measurements.

[0035] This prioritization ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a battery management system for a battery module chain (70-1, 70-m) having battery modules (11-1, 11-2,..., 11-n) that can be connected electrically positively or negatively, individually or serially, to terminals of the battery module chain (70-1, 70-m) and individually disconnected electrically. The battery module chain (70-1, 70-m) is suitable to generate an alternating voltage by disconnecting and connecting the battery modules (11-1, 11-2,..., 11-n). The battery management system is characterized in that it is able to assign each battery module a respective time period, during which the battery module is connected electrically during a half-period, depending on the position of said battery module in a battery module list. This permits a hierarchical arrangement of the battery modules in accordance with performance capability, for example determined by using charging state and / or state of health, and therefore permits the module loadings to be balanced out.

Description

technical field [0001] The invention relates to a method for generating a periodic alternating voltage using a battery module string and a battery management system for a battery module string. The battery module set comprises battery modules which are connectable individually or in series to the poles of the battery module set and are individually electrically separated, each having at least one battery cell, for example a lithium-ion battery cell, as is generally the case in electric or hybrid vehicles. Battery systems, ie, find use in motor vehicles with a partially or partly electrically driven drive. The invention therefore also relates to a motor vehicle and a battery system. Background technique [0002] With improved storage capacity, more frequent recharging and higher energy density, accumulators such as those based on lithium-ion cells or nickel-metal hydride accumulators find more and more widespread application. Batteries with lower energy storage capacity wil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/483
CPCB60L58/18B60L58/21H01M10/441H02M7/483H01M2010/4271H01M2220/20B60L53/00Y02T10/70Y02T10/7072Y02T90/14Y02E60/10H02J2207/20H02J7/0014
Inventor H-J·沃尔夫H·帕尔特斯J·费策尔S·布茨曼
Owner ROBERT BOSCH GMBH