EP3766161A1 - Système d'alimentation électrique et procédé de contrôle de chaîne d'une batterie - Google Patents

Système d'alimentation électrique et procédé de contrôle de chaîne d'une batterie

Info

Publication number
EP3766161A1
EP3766161A1 EP19711572.8A EP19711572A EP3766161A1 EP 3766161 A1 EP3766161 A1 EP 3766161A1 EP 19711572 A EP19711572 A EP 19711572A EP 3766161 A1 EP3766161 A1 EP 3766161A1
Authority
EP
European Patent Office
Prior art keywords
battery
power supply
supply system
central unit
string
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP19711572.8A
Other languages
German (de)
English (en)
Inventor
Karsten ALBAT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eaton Intelligent Power Ltd
Original Assignee
Eaton Intelligent Power Ltd
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 Eaton Intelligent Power Ltd filed Critical Eaton Intelligent Power Ltd
Publication of EP3766161A1 publication Critical patent/EP3766161A1/fr
Pending legal-status Critical Current

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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting

Definitions

  • the invention relates to a power supply system, in particular for an emergency lighting system, having a central unit, a number of battery blocks connected in series in a battery blocks and / or cells, of which at least two battery strings are connected in parallel by means of a Strangvertei- lers.
  • Such an electric power supply system serves as an alternative energy source, ie as a battery, in the event of the failure of an otherwise applied mains alternating voltage in the emergency lighting system.
  • a number of battery blocks / cells are connected in series for such a battery and form a so-called battery string.
  • a number of these battery strings can be connected in parallel to one another by means of the string distributor.
  • the battery strings are connected in parallel in order to obtain an adequate supply for, for example, the emergency lighting system.
  • the individual battery capacity required in this connection results for the particular application of the power supply system and is calculated during a configuration of the corresponding system.
  • a parallel connection of multiple battery strings result in greater capacity, with such capacity can not be achieved otherwise.
  • a parallel connection of several battery strings can be economically more economical than using only a single string with larger or more battery blocks / cells.
  • the use of multiple battery strings results in the disadvantage that a fault condition in one of the battery strings can not be detected without further notice. If, for example, one of the battery strings is disconnected during maintenance and then inadvertently not reconnected, a considerable part of the actual projected battery capacity is usually missing. However, this can only be noticed by the central unit when there is only insufficient capacity available for a complete discharge. This case usually occurs rarely, namely at most once a year in a duration test or in a real case of use, so a failure of the general power supply by AC line voltage. It is an object of the invention to remedy such a gap in monitoring and to ensure that a fault condition in each of the battery strings can be immediately detected and assigned.
  • the power supply system according to the present invention, a current-measuring device, which is assigned to each battery string separately and individually.
  • monitoring of a battery string can be realized in a simple manner, without, for example, using a single battery block / cell monitoring.
  • the corresponding battery strings are spatially adjacent, in particular in a battery cabinet or on a battery rack.
  • the corresponding current-measuring device can be arranged in the string distributor, so that the current-measuring device can be arranged compactly and easily maintainable for each battery string. It is also possible that the current measuring device is arranged in the battery cabinet or the battery.
  • Simple exemplary embodiments of such a current measuring device are a shunt resistor, a Hall sensor or the like with corresponding connecting lines to a voltage measuring device.
  • This voltage measuring device measures a voltage drop, for example in the shunt resistor, and determines the flowing current with knowledge of the corresponding resistance.
  • a corresponding voltage measuring device is arranged in the central unit.
  • the shunt resistor or the Hall sensor is arranged in the line distributor, while the actual voltage measurement takes place in the central unit, which is connected to the line distributor via corresponding connecting lines.
  • corresponding units such as voltage measuring device, measured value detection device, evaluation device or measured value conditioning device, as described in connection with the central unit, are also arranged alternatively in the strand distributor or battery cabinet or between centroid ralaji, strand distributor and battery cabinet are distributed.
  • This also applies analogously to the memory device.
  • the various devices such as voltage measuring device, measurement acquisition and evaluation unit, measured value processing device or storage device, can also be distributed in the power supply system or central unit, line distributor or battery cabinet can be assigned individually or in total and arranged there.
  • the central unit can comprise, in addition to the voltmeter, further units, such as, for example, a measured value detection device and an evaluation device.
  • the central unit may comprise a microcontroller or a computer which receives the corresponding measured values from the voltage measuring device and subsequently evaluates them.
  • a corresponding evaluation software can be stored in the central unit, for example in a storage facility.
  • the central unit optionally has a measured value preparation device. This is used, for example, for conditioning the measurement signals and for analog-to-digital conversion of such signals, if required depending on the measurement and evaluation method used.
  • the measured value processing can take place before the actual evaluation of the measurement results by the evaluation device.
  • the central unit may have a memory device for interrogating and / or storing such battery data.
  • additional battery data are, for example, a voltage of the battery, a temperature in a room in which the battery or batteries are arranged, wear of the battery in the form of already completed charging and discharging cycles, wear of the battery in the form from previously achieved discharge depths when discharging the battery, wear in the form of previously achieved charging efficiencies in a charge, an age of the respective battery blocks / cells and the like.
  • the evaluation device can perform an evaluation of these data at regular intervals while taking the currents into account. As a result of such a rating, a warning message may be output via the central unit or else at another location of the power supply system that indicates a faulty battery string. If necessary, to check each battery string individually or in particular to use several battery strings simultaneously in parallel and variably, the string distributor can have switching devices for switching on each battery string. An appropriate rating of each battery string can be done in the following manner.
  • the total current of the battery is divided proportionally into the individual phase currents according to the respective internal resistance. These are determined on the one hand by the specific capacities of the individual battery blocks / cells, on the other hand by appropriate wear and / or aging effects.
  • a corresponding error indication can, for example, be realized in a simple manner by virtue of the fact that the central unit has a display device.
  • the central unit Have a charging device to load via the string distributor the battery blocks / cells in the individual Batteriestrnatureen.
  • the corresponding data of the batteries can be stored in a memory of the central unit or can also be queried or loaded during operation. This data can be retrieved at any time and used to further evaluate each individual battery string in addition to the current measurement.
  • the current should be sufficiently high. It is therefore advantageous according to the invention if the measured value acquisition of the battery current is carried out during a discharge or heavy charge of the battery.
  • a trickle charge can subsequently also be carried out by means of the charging device of the central unit. With such a trickle charge, the current intensity is usually so low that an above-mentioned evaluation and evaluation can not take place.
  • at least one current pulse in the battery can be generated, this pulse is divided according to the above remarks on the individual strands of the battery. The use of such a current pulse for monitoring the charge of batteries is described for example in DE 33 09 543.
  • the invention further relates to a method for strand monitoring of a battery of a power supply system, in particular for an emergency lighting system, with the following steps.
  • a measurement is made of an electrical current flowing in each battery string formed from a number of serially connected battery blocks and / or cells.
  • the individual battery strings are connected in parallel to each other with a central unit via a string distributor.
  • the measured current values are recorded and evaluated. Subsequently, an evaluation of the detected and evaluated current measured values taking into account current and / or already known battery data. These are stored, for example, in a memory device of the central unit or are read out from the battery blocks / cells. On the basis of the evaluation, a state of each battery strand is then determined to be functional, evenly aged, evenly worn or functional but not uniformly aged or evenly worn, and severely aged, worn, damaged or defective.
  • the measuring of the current in the above-mentioned step takes place during a discharging or heavy charge of the battery, and a warning message can be output in the event of a faulty battery string after the corresponding state has been determined by means of the central unit.
  • Figure 1 is a schematic diagram of a power supply system according to the invention, in particular for an emergency lighting system.
  • Fig. 1 shows a schematic diagram of a power supply system 1, which can be used in particular for an emergency lighting system with different emergency lights.
  • a power supply system switches to a battery as an alternative energy source for the emergency lighting system in case of failure of an AC mains voltage to be monitored.
  • battery stands for a large number of battery blocks / cells, which provide the required battery capacity depending on the configuration of the corresponding emergency lighting system.
  • the battery is formed by a number of battery strings 3, 4, 5, 6, each comprising a plurality of individual battery blocks / cells 7, 8, 9, 10.
  • the battery blocks / cells are connected in series within the battery string, wherein in each battery string in addition to a series circuit of such battery blocks / cells also a parallel connection of further battery blocks / cells can also take place.
  • the various battery strings 3, 4, 5, 6 are connected to a so-called string distributor 1 1. This produces a parallel connection of the various strands as needed, see the switching devices 27, 28, 29, 30.
  • the various battery strings can be arranged both individually and overall spatially close to each other in a battery cabinet or on a battery rack. 4, the various battery strings 3, 4, 5, 6 are arranged in a battery cabinet 16. Via corresponding lines, the individual battery strings are connected to the string distributor 11, which activates one or more battery strings for power supply, as required, with a corresponding parallel connection via the string distributor in the case of several battery strings.
  • the string distributor 11 which activates one or more battery strings for power supply, as required, with a corresponding parallel connection via the string distributor in the case of several battery strings.
  • Such a parallel connection of multiple battery strings is often required Larger capacities can be found, since otherwise such a capacity can not be achieved, or because the parallel connection of different battery strings is economically cheaper than using only a single battery string with more individual blocks or larger individual blocks to achieve the same capacity.
  • corresponding current measuring devices 12, 13, 14, 15 are arranged in the strand distributor 11. It is also conceivable that at least parts of the current measuring device can also be assigned directly to each battery string, for example corresponding shunt resistors 17, Hall sensors or the like. In Fig. 1, however, the shunt resistors 17 for the respective different battery strings in the strand distributor 1 1 after the switching devices 27, 28, 29, 30 are arranged. The shunt resistors 17 are used to pick up a corresponding voltage, see the connection 18, 19, 20, 21 with at least one voltmeter in a central unit 2. The compounds 18, 19, 20, 21 are only partially shown and are used for voltage measurement on the Shunt resistors 17 by means of the corresponding voltage measuring device 22.
  • the resistances of the shunt resistors are known and so can be measured from the tapped voltages in connection with the known resistance of the current flowing across the shunt resistor 17 current. According to the invention, a correspondingly flowing stream can thus be measured and evaluated for each strand.
  • the corresponding connections 18 are directly connected to the shunt resistor 17, analogously such a connection also being present for the further connections 19, 20, 21 with the respective shunt resistor 17.
  • the voltages can be measured by means of the voltage measuring device 22 in the central unit 2, with possibly additional measured value detection unit 23 or measured value conditioning unit 25 being arranged in the central unit 2.
  • the measured-value acquisition unit 23 can detect the measured values supplied directly by the voltage measuring device 22 and, if necessary, transmit them first to the measured-value processing device 25 for further evaluation and, if necessary, for further evaluation.
  • a conditioning of the measuring signals from the measured value detecting unit 23 as well as an analog-to-digital conversion takes place, if necessary.
  • the conditioned values of an evaluation unit 24 are transmitted by the measured value processing unit 25, which evaluates the measured voltage or the measured current with the aid of further data with regard to each individual battery string 3, 4, 5, 6. This evaluation will be described in more detail below.
  • the central unit 2 may also have a memory device 26 in which both the evaluated measurement results and corresponding software programs or other data are stored.
  • the central unit 2 In order to charge the battery or the battery blocks / cells 7, 8, 9, 10 contained in the different battery strings 3, 4, 5, 6 by means of the central unit 2, the central unit 2 likewise has a charging device 31. This is connected to the mains AC voltage.
  • a connection of the charging device 31 can also be made with the battery strings via the distributor strand 1 1 by means of the further charge / discharge line 34, hereinafter referred to as battery line.
  • fuses can be arranged between the individual battery strings and the branch distributor, see reference numeral 33, which prevent a further current flow in this battery string in the event of a short circuit in a battery string.
  • Such data are in particular: voltage of the battery, voltage of each individual battery lock / cell, temperature in the battery compartment, wear in the form of already completed charge and discharge cycles, wear in the form of previously reached discharge depths during a discharge, wear in the form of previous ones achieved charging efficiencies at a charge or even age of the respective battery blocks / cells.
  • Corresponding software in a computer system or microcontroller of the central unit 2 evaluates the state of the battery strings on the basis of the measured currents and the additional data and possibly gives as a result of the evaluation a warning message via the display device 32 directly to the central unit or also to a Total central unit of a building or the like.
  • the central unit 2 according to FIG.
  • the central unit 2 according to FIG. 1 can also be such a total central unit within a building which, for example, has a number of String distributors with appropriate batteries is responsible.
  • the corresponding lines 18, 19, 20, 21 make possible a wireless transmission or a wireless interrogation of the corresponding data from the line distributor 1 1 can take place locally by a mobile computer unit.
  • a corresponding evaluation of the different battery strings is carried out, for example, as follows.
  • the total current of the battery is distributed proportionally to the individual battery line currents and according to the respective internal resistance. These internal resistances are practically determined only by specific capacities of the individual battery blocks / cells. In such a case, all battery strings are in the same state and no triggering of a warning is required.
  • the total current of the battery is distributed proportionally to the individual battery line currents according to the respective internal resistance.
  • These internal resistances are determined on the one hand by the specific capacities of the individual battery blocks / cells and on the other hand by the different wear and / or aging effects. This different division of the battery string currents can be measured according to the invention and used to evaluate a state of the various battery strings.
  • the central unit 2 can store corresponding data, so that, for example, data according to the battery data sheets can also be stored in the strand currents, in particular with regard to expected measured values. Likewise, older measured values can be stored for comparison with current measured values, which can likewise be used to evaluate a corresponding state of the battery strings.
  • the current intensities are detected during the discharge or a high charge of the battery. Otherwise, for example, a trickle charge for the battery, which leads only to low currents, which may complicate a meaningful evaluation of the corresponding currents of the individual battery strings.
  • a trickle charge monitoring of the battery can take place, as described for example in DE 33 09 543.
  • the trickle charging voltage is briefly increased at regular intervals in order to generate a corresponding reaction in the form of a current pulse in the battery or in the various battery strings. Also, this current pulse is divided according to the above-mentioned different states on the individual battery strings and can be inventively detected and used for the evaluation.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un système d'alimentation électrique, en particulier pour un système d'éclairage de secours, comportant une unité centrale, un certain nombre de blocs-batteries et/ou d'éléments de batteries connectés au moins en série en formant une chaîne de batterie, au moins deux chaînes de batteries peuvent être connectées en parallèle au moyen d'un répartiteur de chaînes. Le répartiteur de chaînes est agencé entre les chaînes de batteries et l'unité centrale. Afin de pallier des lacunes lors du contrôle des chaînes de batteries et de s'assurer qu'un état de panne peut être découvert et déclaré immédiatement dans chacune des chaînes de batteries, un équipement de mesure de courant est associé respectivement à chacune des chaînes de batteries.
EP19711572.8A 2018-03-15 2019-03-14 Système d'alimentation électrique et procédé de contrôle de chaîne d'une batterie Pending EP3766161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018106113.7A DE102018106113A1 (de) 2018-03-15 2018-03-15 Stromversorgungssystem und Verfahren zur Strangüberwachung einer Batterie
PCT/EP2019/056422 WO2019175312A1 (fr) 2018-03-15 2019-03-14 Système d'alimentation électrique et procédé de contrôle de chaîne d'une batterie

Publications (1)

Publication Number Publication Date
EP3766161A1 true EP3766161A1 (fr) 2021-01-20

Family

ID=65812313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19711572.8A Pending EP3766161A1 (fr) 2018-03-15 2019-03-14 Système d'alimentation électrique et procédé de contrôle de chaîne d'une batterie

Country Status (3)

Country Link
EP (1) EP3766161A1 (fr)
DE (1) DE102018106113A1 (fr)
WO (1) WO2019175312A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309543A1 (de) 1983-03-17 1984-09-20 Ceag Licht- Und Stromversorgungstechnik Gmbh, 4770 Soest Verfahren zur ueberwachung der ladung von batterien
AT396637B (de) * 1990-07-23 1993-10-25 Industrieelektronik Poelz Ladegerät für sammlerbatterien
US6274950B1 (en) * 1994-03-03 2001-08-14 American Power Conversion Battery communication system
JP2005176461A (ja) * 2003-12-09 2005-06-30 Matsushita Electric Ind Co Ltd 直流無停電電源装置
US7142950B2 (en) * 2004-05-28 2006-11-28 American Power Conversion Corporation Methods and apparatus for providing and distributing standby power
US9252631B2 (en) * 2011-06-08 2016-02-02 Andrew V. Latham Data center battery enhancement method and system
DE102011056377A1 (de) * 2011-07-08 2013-01-10 Mack Electronic Systems GmbH & Co. KG Energiespeicher mit mindestens einem Basismodul
DE102012208350A1 (de) * 2012-05-18 2013-11-21 Robert Bosch Gmbh Batteriesystem und Verfahren zur Ermittlung von Zellspannungen und eines Batteriestroms einer Batterie
US9153974B2 (en) * 2012-06-13 2015-10-06 GM Global Technology Operations LLC Battery parallel balancing circuit
KR101648239B1 (ko) * 2012-06-29 2016-08-12 삼성에스디아이 주식회사 돌입 전류를 저감하는 에너지 저장 장치 및 그 방법
DE202013100811U1 (de) * 2013-02-25 2014-06-02 Rp-Technik E.K. Energieversorgungseinrichtung mit Batterieüberwachung
JP6238107B2 (ja) * 2013-04-12 2017-11-29 パナソニックＩｐマネジメント株式会社 蓄電池の管理システム

Also Published As

Publication number Publication date
WO2019175312A1 (fr) 2019-09-19
DE102018106113A1 (de) 2019-09-19

Similar Documents

Publication Publication Date Title
DE102012222749B4 (de) Verfahren und System zur Kalibrierung von Batteriestrom-Messung
DE112014002853B4 (de) Isolationsdetektor und elektrische Vorrichtung
DE4327996C2 (de) Vorrichtung zum Messen der Impedanz von wiederaufladbaren Batteriezellen
DE4130978C2 (de) Verfahren zum Prüfen von elektrischen, abgesicherten Verbrauchern in einem Fahrzeug-Bordnetz
EP2618439B1 (fr) Circuit protecteur pour une batterie
DE3940929C1 (fr)
DE102009018601A1 (de) Erdschluss-Erfassungssystem für Fahrzeuge mit einem Hochspannungs-Stromnetz
DE102012205401A1 (de) Vorrichtung und Verfahren zur redundanten Bestimmung eines über die Pole einer Batterie fließenden Batteriestroms
DE102014221272A1 (de) Überwachungseinrichtung für eine Batterie, eine Lithium-Ionen-Batterie sowie Verfahren zur Überwachung einer Batterie
DE102009003843A1 (de) Verfahren zum Betreiben eines Rotorblattverstellantriebs
DE102014208680A1 (de) Verfahren zur Überwachung von Stromsensoren
DE102010021176A1 (de) Anordnung zur Einzelzellenmessung in einem Akkupack und einem Akkupack mit einer solchen Anordnung
DE102013209142A1 (de) Verfahren zur Ermittlung eines Isolationswiderstands eines mehrere Teilnetze umfassenden Energieversorgungsnetzwerks eines Fahrzeugs
EP1724900B1 (fr) Procédé et dispositif pour le contrôle/surveillance de la charge des condensateurs montés en série
DE102013013471A1 (de) Verfahren zur Bestimmung der Zuleitungsimpedanz in mehrzelligen Batteriepacks zur Leitungsfehlererkennung
WO2019072488A1 (fr) Dispositif de stockage d'énergie et système et procédé pour déterminer une capacité d'un dispositif de stockage d'énergie
EP0790690B1 (fr) Module pour la détermination de l'état d'une batterie
DE102020133934A1 (de) Verfahren zum Detektieren eines Spannungsmessfehlers, Detektionseinrichtung und Kraftfahrzeug
DE19836141C1 (de) Verfahren und Überwachungsvorrichtung zur Überwachung wenigstens eines zur Notversorgung von elektrischen und/oder elektronischen Verbrauchern zuschaltbaren Batteriesatzes
DE102017116009B3 (de) Verfahren und vorrichtung zum erkennen von lichtbögen
EP3766161A1 (fr) Système d'alimentation électrique et procédé de contrôle de chaîne d'une batterie
DE102019200510A1 (de) Messanordnung, Hochvoltbatterie, Kraftfahrzeug und Verfahren zum Bestimmen einer komplexen Impedanz
EP4327112A1 (fr) Détermination de l'état de vieillissement d'un accumulateur d'énergie à bord d'un sous-marin
DE4231732C2 (de) Verfahren zum Laden einer mehrzelligen Batterie
WO2016198045A1 (fr) Système de batteries pour réseau d'alimentation de bâtiments en énergie électrique et procédé de surveillance d'un accumulateur d'énergie électrique

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20201014

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220303

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230521