Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for determining internal resistance of battery cells of battery

A battery and battery pack technology that is applied to batteries, measuring devices, secondary batteries, etc., to achieve the effect of avoiding mutual differences

Inactive Publication Date: 2015-02-04
ROBERT BOSCH GMBH +1
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] A disadvantage of the methods known from the prior art for determining the internal resistance of a plurality of battery cells or of a plurality of battery modules contained in a battery of a battery direct converter is that at least one battery module should be connected via the connection. The at least one battery module determining the internal resistance of its battery cells significantly increases the output voltage of the battery comprised by the battery direct converter

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
  • Method and device for determining internal resistance of battery cells of battery
  • Method and device for determining internal resistance of battery cells of battery
  • Method and device for determining internal resistance of battery cells of battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] figure 2 A schematic circuit diagram of a drive system 10 is shown, comprising a battery 100 connected to an electric machine 60 according to the described first embodiment of the invention, which battery is driven by means of a direct battery converter. The battery system 101 comprises a battery 100 which is connected to a DC voltage intermediate circuit (not shown) comprising a capacitor 40 . Also connected to the direct voltage intermediate circuit is the pulse inverter 50 comprised by the battery system 101 , which is connected to the three-phase motor (electric drive motor) 60 at its three outputs via two A controllable semiconductor valve (not shown) and two diodes (not shown) provide multiple sinusoidal voltages which are phase shifted from each other.

[0036] Battery 100 includes a battery pack 110 with a plurality of battery modules connected in series, of which only a first battery module 220 and a second battery module 230 are explicitly shown in the drawi...

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 method for determining the internal resistance of battery cells of battery modules (220, 230) of a battery (100) that can be connected to an electric motor (60), said modules being arranged in at least one battery bank (110). In order to generate an adjustable output voltage (UB) for the battery (100), each battery module (220, 230) is designed to be connected in series to the battery bank (110) of the battery (100) and to be decoupled from said bank (110). According to the invention, during the operation of the electric motor (60) at least one first battery module (220) that has been decoupled from the battery bank (110) is connected to said bank (110) and the internal resistance of the battery cells of at least one first connected battery module (220) is determined. In addition, at the same time as the first battery module (220) is connected, a sufficient number of second battery modules (230) that are connected to the battery bank (110) and generate a voltage (UM) corresponding to the voltage (UM) generated by the first connected battery module (220) within predefined tolerance limits are decoupled from the battery bank (110).

Description

technical field [0001] The invention relates to a method and a corresponding device for determining the internal resistance of a plurality of battery cells of a plurality of battery modules of a battery connected to an electric machine, which are arranged in at least one battery pack, wherein the plurality of battery modules are It is designed to be able to be connected in series to at least one battery pack of the battery and to be decoupled from the battery pack, respectively, in order to generate an adjustable output voltage of the battery. Furthermore, the invention relates to a battery comprising a plurality of battery modules, each having at least one battery cell, which are arranged in at least one battery pack and are designed to generate an adjustable output voltage of the battery. A battery pack can be connected in series to and decoupled from the battery pack. Furthermore, the invention relates to a motor vehicle having such a battery. Background technique [00...

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): G01R31/36H01M10/00
CPCG01R31/3658H01M10/482H01M2010/4271G01R31/3662H01M2220/20G01R31/396G01R31/389Y02E60/10G01R31/385
Inventor H·芬克
Owner ROBERT BOSCH GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com