WO2012155942A2 - Ensemble de batteries pour une automobile - Google Patents

Ensemble de batteries pour une automobile Download PDF

Info

Publication number
WO2012155942A2
WO2012155942A2 PCT/EP2011/006276 EP2011006276W WO2012155942A2 WO 2012155942 A2 WO2012155942 A2 WO 2012155942A2 EP 2011006276 W EP2011006276 W EP 2011006276W WO 2012155942 A2 WO2012155942 A2 WO 2012155942A2
Authority
WO
WIPO (PCT)
Prior art keywords
short circuit
control device
battery
terminals
batteries
Prior art date
Application number
PCT/EP2011/006276
Other languages
German (de)
English (en)
Other versions
WO2012155942A3 (fr
Inventor
Thomas Dörsam
Rainer Falsett
Original Assignee
Daimler Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Ag filed Critical Daimler Ag
Publication of WO2012155942A2 publication Critical patent/WO2012155942A2/fr
Publication of WO2012155942A3 publication Critical patent/WO2012155942A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to a battery assembly for a motor vehicle according to the
  • the present invention relates to a method of controlling a battery assembly for a motor vehicle according to the preamble of claim 10.
  • Multi-voltage batteries are called, usually have a common ground connection for the individual batteries. There is a risk here that a direct electrical connection is established between the ground connection and one or more of the electrical connections of the batteries, and thus a
  • Short circuit occurs.
  • the battery can become very hot, which in turn can lead to damage or complete failure of the battery.
  • a temporary short circuit can occur between the individual terminals of the batteries in the event of a fault, or the current flow due to a loose contact (for example in the plug) can be changed. This can result in a parallel or serial arc forming between the respective terminals, which can also damage the battery or the environment.
  • Arc can be detected.
  • a corresponding control electronics by means which the fault detection and shutdown is realized in the event of a fault, arranged as an additional component on or in the battery assembly.
  • DE 10 2008 039 284 A1 describes a method for operating an electrical vehicle electrical system, wherein a battery unit is electrically conductively connected to one or more electrical consumers at least temporarily.
  • the battery unit has a plurality of interconnected cell strings. These cell strands are depending on the operating conditions of the vehicle or the
  • the object of the present invention is to provide a battery assembly of the type mentioned, with which the individual batteries can be operated very safe and easy.
  • a short circuit between the terminals is to capture.
  • the at least two batteries of the battery assembly which are connected in series with each other, each have a terminal for removing an electrical energy and a ground terminal.
  • the ground terminal is formed as a common ground terminal.
  • Control device which is usually present on such battery assemblies, for example, to determine the state of charge of the respective batteries based on the electrical voltage and / or the electric current used.
  • the electrical voltage and / or the electric current used are usually used to determine the state of charge of the respective batteries based on the electrical voltage and / or the electric current used.
  • the battery arrangement for each of the batteries on a separating element with which an electrical connection between the battery and at least one of the terminals in dependence on the detected by the control device short circuit is separable.
  • Such isolation or switching elements are usually present in the battery assembly to protect the batteries, for example, from a deep discharge. These disconnecting or switching elements are appropriately driven by the controller upon detection of a critical condition to disconnect the electrical connections of the battery.
  • the isolators are used to disconnect the electrical connections between the batteries and the corresponding electrical connections after detecting a short circuit.
  • the number and arrangement of the separating elements may vary depending on the design of the battery assembly and the defined Schutz Kunststofft. By using the separators there are no additional costs.
  • the short circuit can be detected with the aid of the time profile of the electrical voltage and / or the electrical current with the control device. If a short circuit occurs between one or more of the electrical connections or between one or more of the electrical connections and the ground connection, typical time profiles of the electrical voltage and the electrical current result. In this way, a short circuit can be detected particularly accurately.
  • the control device comprises a short-circuit detection device for detecting a generated by a body closure between the terminals
  • An electrical short circuit between the terminals can be caused by the fact that electrical conductors touch directly or a direct electrical connection is present. Here is a so-called body closure.
  • Control device is adapted to a short circuit resulting in a
  • Body closure between the terminals arises, for example, based on the
  • control device additionally comprises a
  • An arc detection device for detecting one by a parallel arc between two or more terminals or between one or more
  • the control device comprises an additional arc detection device with which an arc can be detected in a particularly secure and reliable manner.
  • control device additionally comprises a
  • Arc detection device for detecting a serial arc, which can be formed when a line is interrupted during a current flow.
  • the control device comprises an additional arc detection device with which an arc can be detected in a particularly secure and reliable manner
  • control device comprises a microcontroller with a recognition algorithm of a short circuit generated by a body closure and / or by an arc.
  • a recognition algorithm of a short circuit generated by a body closure and / or by an arc is preferably a corresponding recognition algorithm for detecting a short circuit or an arc.
  • Detection algorithm used with the history of the electrical current and / or the voltage at the terminals of the respective battery can be checked.
  • Such a recognition algorithm for example, on the in the
  • Short circuit especially to a driver and / or others
  • the control device is designed to communicate a detected short circuit between the terminals of the respective battery, for example via a corresponding network connection. For this purpose, for example, a corresponding warning light can be activated. It is also conceivable that an error code is provided by the control device, which can be read out with a corresponding diagnostic device.
  • the batteries of the battery arrangement are preferably lithium-ion batteries. These batteries are characterized by a high energy density and a long life. Furthermore, lithium ion batteries are usually corresponding
  • control devices and separating elements.
  • the present invention relates to a method for controlling a
  • the single drawing shows a schematic representation of a battery assembly for a motor vehicle, in which several batteries are connected in series with each other.
  • the figure shows a schematic representation of a battery assembly 10. Die
  • Battery assembly 10 includes a plurality of individual batteries 12 connected in series with each other.
  • a single battery 12 consist of several battery cells 14, which are also connected in series with each other.
  • the arrangement of a plurality of battery cells 14 is shown in the figure by the dotted line 16.
  • Each of the batteries 12 has a corresponding terminal for removal and supply of electrical energy. The one shown in the figure
  • the battery assembly 10 three terminals Ui, U 2 and U 3 to the respective batteries 12. At the terminals U 1 t U 2 and U 3 each a different voltage level can be tapped.
  • the batteries 12 are each interconnected at the common ground terminal M.
  • the ground terminal M is usually connected to the body of the motor vehicle.
  • the connections Ui, U2 and U 3 are connected to the electrical system of the motor vehicle. This is shown schematically by the brace 18 in the figure.
  • a short circuit between two or more of the terminals Ui, U 2 and U 3 may occur in an error case.
  • a short circuit between one or more of the terminals Ui, U 2 and U 3 may occur with the ground terminal M.
  • a temporary short circuit occurs between the respective terminals Ui, U 2 , U 3 and M.
  • a short circuit can occur via a direct electrical contact of the terminals U 1 t U 2 , U 3 and / or M. This can be caused by the electrical connection of the respective terminals Ui, U 2 , U 3 and / or M by an electrical conductor, such as a cable or an electrically conductive housing.
  • Short circuit or arc the battery 12 or the environment can heat up strongly, which can cause damage or complete failure of the battery 12.
  • the battery arrangement 10 comprises a control device 20 with which the electrical current and / or the electrical voltage at the terminals Ui, U 2 , U 3 and at the respective ground terminal M of the battery can be checked.
  • a control device 20 is usually present in a battery assembly 10, for example, to determine the state of charge of the battery 12.
  • Control device 20 a short circuit and / or an arc between one or more of the terminals Ui, U 2l U 3 and M are detected.
  • the time course of the electrical voltage and / or the electric current at the terminals Ui, U 2 , U 3 and at the ground terminal M can be checked.
  • a short circuit and / or an arc to be detectable as a function of the exceeding / falling below a predetermined limit value for the electrical voltage and / or the electric current.
  • the control device 20 comprises a
  • Short-circuit detection device 22 with which a short circuit, which was generated in particular by a physical connection between the terminals Ui, U 2 , U 3 and M, can be detected.
  • the control device 20 includes a
  • Arc detection device 24 with the occurrence of an arc between one or more of the terminals U 2 , U 3 and M (parallel arc) and a serial arc can be detected.
  • both the terminals U 2 , U 3 and M parallel arc
  • a serial arc can be detected.
  • Short-circuit detection device 22 and the arc detection device 24 include a corresponding microcontroller having a detection algorithm for detecting a generated by a body closure short circuit or generated by a parallel arc short circuit and a
  • Detection algorithm for detecting a serial arc includes. It is also conceivable that the corresponding recognition algorithm or the
  • Detection algorithms are operated directly on the controller 20.
  • the separating elements S 0 , Si, S 2 and S 3 can be activated by a corresponding control signal of the control device 20 be opened.
  • the separating element S 0 between the battery 12 and the ground terminal M is arranged.
  • the separating elements S ⁇ S 2 and S 3 are arranged correspondingly between the respective battery 12 and the terminals Ui, U 2 and U 3 .
  • Battery assembly 10 vary.
  • one or more of the separating elements S 0 , S 2 S 2 and / or S 3 can be opened, depending on the fault, in order to counteract damage to the batteries 12 or their components.
  • the separating elements So, S 1 , S 2 and S 3 can also be used as switching and separating elements be realized for example by appropriate semiconductor switches or transistors.

Abstract

L'invention concerne un ensemble de batteries (10) pour une automobile, lequel est constitué d'au moins deux batteries (12), montées en série et comprenant chacune une borne (U1, U2, U3) pour le soutirage d'une énergie électrique et une borne de masse (M), et d'un dispositif de commande (20) permettant la détection d'une tension électrique et/ou d'un courant électrique aux bornes (U1, U2, U3, M) de la batterie respective, un court-circuit entre les bornes (U1, U2, U3, M) pouvant être détecté au moyen dudit dispositif de commande.
PCT/EP2011/006276 2011-05-18 2011-12-13 Ensemble de batteries pour une automobile WO2012155942A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011106297,5 2011-05-18
DE102011106297A DE102011106297A1 (de) 2011-05-18 2011-05-18 Batterieanordnung für einen Kraftwagen

Publications (2)

Publication Number Publication Date
WO2012155942A2 true WO2012155942A2 (fr) 2012-11-22
WO2012155942A3 WO2012155942A3 (fr) 2013-06-20

Family

ID=45349458

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/006276 WO2012155942A2 (fr) 2011-05-18 2011-12-13 Ensemble de batteries pour une automobile

Country Status (2)

Country Link
DE (1) DE102011106297A1 (fr)
WO (1) WO2012155942A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10020650B2 (en) 2014-02-24 2018-07-10 Ge Energy Power Conversion Technology Ltd Battery energy storage system with arc flash protection, energy conversion system and protection method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012015941B4 (de) * 2012-08-10 2016-03-24 Audi Ag Kraftfahrzeug
DE102014008494B4 (de) 2014-06-07 2019-07-18 Audi Ag Defekterkennung in einem Kraftfahrzeug-Bordnetz
DE102015217692A1 (de) 2014-10-09 2016-04-14 Ford Global Technologies, Llc Verfahren zur Überwachung des Zustands einer Batterie in einem Kraftfahrzeug
DE102017206354B4 (de) * 2017-04-12 2023-11-23 Audi Ag Fahrzeugbatterie, Kraftfahrzeug mit einer Fahrzeugbatterie sowie Verfahren zu deren Betrieb
DE102018206648B4 (de) * 2017-05-03 2020-03-26 Leoni Bordnetz-Systeme Gmbh Leitungsnetz sowie Versorgungsleitung für ein solches Leitungsnetz
DE202017006946U1 (de) 2017-07-31 2018-12-12 Ellenberger & Poensgen Gmbh Abschaltvorrichtung
DE102021102049A1 (de) 2021-01-29 2022-08-04 Audi Aktiengesellschaft Batterieanordnung, Kraftfahrzeug und Verfahren zum Betreiben einer Batterieanordnung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008039284A1 (de) 2008-08-22 2010-02-25 Daimler Ag Verfahren und Vorrichtung zum Betreiben eines elektrischen Fahrzeug-Bordnetzes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101107115B1 (ko) * 2008-12-01 2012-01-30 삼성에스디아이 주식회사 배터리 관리 시스템 및 배터리 관리 방법
EP2325920A3 (fr) * 2009-10-30 2011-12-07 Sanyo Electric Co., Ltd. Système de batterie et véhicule électrique le comportant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008039284A1 (de) 2008-08-22 2010-02-25 Daimler Ag Verfahren und Vorrichtung zum Betreiben eines elektrischen Fahrzeug-Bordnetzes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10020650B2 (en) 2014-02-24 2018-07-10 Ge Energy Power Conversion Technology Ltd Battery energy storage system with arc flash protection, energy conversion system and protection method

Also Published As

Publication number Publication date
WO2012155942A3 (fr) 2013-06-20
DE102011106297A1 (de) 2012-01-12

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