WO2019091824A1 - Système d'accumulateur à batterie - Google Patents

Système d'accumulateur à batterie Download PDF

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Publication number
WO2019091824A1
WO2019091824A1 PCT/EP2018/079684 EP2018079684W WO2019091824A1 WO 2019091824 A1 WO2019091824 A1 WO 2019091824A1 EP 2018079684 W EP2018079684 W EP 2018079684W WO 2019091824 A1 WO2019091824 A1 WO 2019091824A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage system
battery storage
memory module
series
memory modules
Prior art date
Application number
PCT/EP2018/079684
Other languages
German (de)
English (en)
Inventor
Tim Müller
Lars FALLANT
Manfred Liebscher
Lars MADEMANN
Original Assignee
Belectric Gmbh
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 Belectric Gmbh filed Critical Belectric Gmbh
Publication of WO2019091824A1 publication Critical patent/WO2019091824A1/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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/001—Hot plugging or unplugging of load or power modules to or from power distribution networks
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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

Definitions

  • the invention relates to a battery storage system having at least one series train, wherein in each series train at least a first memory module and a second memory module are provided, which are electrically connected in series with each other, wherein the
  • Serial train is electrically connected to a converter that is on its
  • AC side is connected to an AC mains.
  • a battery storage system for power plants in particular for solar power plants is known, which has a plurality of memory modules.
  • the memory modules can come from, among other things, the automotive sector.
  • the battery storage system comprises several series trains, each with two
  • Memory modules are provided.
  • the memory modules of a series train are electrically connected in series.
  • the series trains are electrically connected in parallel with each other.
  • the series strings are electrically connected to a converter, which on its AC side with a
  • the battery storage system itself is operated with a DC system voltage.
  • the memory modules which preferably originate from the automotive sector, have a plurality of components, such as semiconductor elements, in particular
  • a critical state is especially present when switching elements of the memory module, which are used for switching on and off of the memory module, are in the open state and applied to the series strand a nominal voltage.
  • the (nominal) voltage applied to the series train mentioned above can already be parallel
  • the invention is therefore based on the object to provide a battery storage system, which in a cost effective manner reliable and safe operation
  • Symmetry resistance an overvoltage of the memory modules is advantageously prevented, whereby a safe and reliable battery storage system is provided.
  • This arrangement ensures that the voltage applied to the memory module voltage below a predetermined limit, in particular a
  • Threshold voltage of the memory module remains. This prevents the
  • the battery storage system can be reliably put into operation when the respective memory module has at least two switching elements, wherein the first
  • the respective memory module comprises a heating element and / or a measuring and / or load circuit and / or a semiconductor, in particular a semiconductor switch, which are preferably arranged in a closed metallic housing, wherein the respective memory module an equivalent resistance, in particular a
  • Klemmersatzwiderstand which is formed by the resistors of the heating element and / or the measuring and / or load circuit and / or the semiconductor, in particular the semiconductor switch, when at least one switching element has an open state, in particular when the first switching element and the second switching element have an open state.
  • Type-specific properties of the memory module in particular after
  • Memory module assigned equivalent resistance is formed.
  • the battery storage system can work safely and reliably if that
  • Battery storage system has a working voltage range of preferably 600V-840V and a memory module has a working voltage range of preferably 300- 420V, wherein the DC system voltage is preferably substantially twice as large is like a terminal voltage, which lies in the working voltage range of the memory module.
  • the battery storage system can be provided when the memory modules are designed as previously used memory modules and / or as first-life memory modules.
  • Used memory modules are memory modules that have already been used in one or more other systems and may suffer from power loss, such as memory modules previously used in electric cars.
  • First-life memory modules are memory modules that have not previously been used, and where essentially none
  • the use of used memory modules has the advantage that they are available on the market at low cost.
  • the first-life memory modules offer the advantage that the storage capacity is very high. So it can make sense
  • Form battery storage systems both with used memory modules, as well as with first-life memory modules It could offer a ratio of 90/10, the use of 90% used memory modules and 10% First Life memory modules, or the use of 10% used memory modules and 90% First Life memory modules. Depending on the selection, a low-cost and / or highly efficient battery storage system can be provided.
  • the battery storage system can be provided that all first and all second switching elements of the battery storage system are open when the inverter is inactive and the DC system voltage has 0V. In this case, the battery storage system is in a shutdown state.
  • the first equivalent resistance of the first memory module is formed high-impedance or low-impedance than the second equivalent resistance of the second memory module of the respective series strand.
  • Communication interface which is arranged in or on the housing of the memory module, are switchable.
  • the communication interface can be designed as a CAN bus or else as a wireless connection, such as W-Lan.
  • a safe start of the battery storage system can be ensured when take in operation of the battery storage system in a first step, a DC circuit is charged to a default voltage and thereafter by switching on the switching elements of the memory module, these are continuously switchable, the battery storage system only after the connection all series trains can be operated at full power.
  • the DC circuit is the electrical connection of the series strands with each other at their respective
  • the individual series strands are interconnected in parallel.
  • the number of symmetry resistors can advantageously be reduced if at least one first memory module system and one second memory module system are connected in series with at least one first memory module being connected in parallel and / or at least in the first memory module system at least in the second
  • Memory module at least two second memory modules are connected in parallel to each other, wherein the first memory modules and / or to the second
  • FIG. 1 shows a circuit diagram of a battery storage system according to the invention according to a first embodiment
  • Figure 2 is a circuit diagram of a battery storage system according to the invention according to a second embodiment.
  • FIG. 1 shows a battery storage system 1, for example for a solar power plant.
  • the battery storage system 1 may also be connected to other power plants, such as hydropower plants, wind power plants, and the like.
  • the battery storage system 1 has a working voltage range of preferably 600V-840V and a memory module (6, 6 ', 6 ", 7, T, 7") has a working voltage range of preferably 300-420V, the DC system voltage preferably in
  • the present battery storage system 1 has a converter 2, which comprises a positive pole and a negative pole and is electrically connected via lines with at least three series strands 3, 4 and 5.
  • the series strands 3, 4, 5 are interconnected in parallel, as can be seen from the figure.
  • the inverter 2 is on his
  • the other series strands 4, 5 are substantially similar to the structure and function of the series strand 3.
  • the memory modules 6, 7 of the series train 3 are preferably designed as high-voltage storage, which are used for example in the automotive industry in electric vehicles. These may be used memory modules, which were previously used in electric vehicles, but also so-called first-live memory modules that were not yet in use.
  • the memory modules 6, 7 are essentially the same in construction.
  • the memory module 6 of the first series strand 3 comprises a heating element and / or a measuring and / or load circuit and / or a semiconductor, in particular a semiconductor switch, which are preferably arranged in a closed metallic housing, the memory module 6 having an equivalent resistance 8, in particular a clamping replacement resistor, which is formed by the resistors of the heating element and / or the measuring and / or load circuit and / or the semiconductor, in particular of the semiconductor switch, when a first switching element 9 and a second switching element 10 have an open state.
  • the memory module 6 comprises the at least two switching elements 9, 10, wherein the first switching element 9 behind a first terminal point, which has the positive potential is disposed, and the second switching element 10 in front of a second negative terminal point, which has a negative potential is disposed ,
  • the second memory module 7 also includes an equivalent resistor 11, a first switching element 12 and a second switching element 13.
  • the switching elements 9, 10, 12, 13 are switchable via a communication interface, which is arranged in or on the housing of the memory module 6 and 7, respectively ,
  • each storage module 6, 7 of the series strand 3 is one each
  • Symmetry resistance 14, 15 connected in parallel.
  • the symmetry resistor 14 has a lower impedance than the equivalent resistance 8 and in the second memory module 7 the symmetrical resistor 15 has a lower impedance than the equivalent resistor 11.
  • the first equivalent resistance 8 of the first memory module 6 is higher-impedance or lower-resistance than the second one
  • Substitute resistor 11 of the second memory module 7 of the series strand 3 is formed.
  • the resistance values of the equivalent resistors 8 and 11 are in most cases unequal, since this with the construction and the nature of the memory modules 6, 7 and their
  • the replacement resistors 8, 11 are not to be regarded as static, but can, in particular at startup of the
  • the operation of the battery storage system 1 will be described below.
  • all the switching elements of the battery storage system 1, in particular the switching elements 9, 10, 12, 13 in an open state and the inverter 2 is inactive, wherein the DC system voltage is then OV.
  • the equivalent resistors 8 and 11 have different resistance values, in particular the equivalent resistance 8 is smaller, or even smaller, than the equivalent resistance 11. Without the symmetry resistors 14, 15, it could then happen that a voltage of, for example 600V is formed and the memory module 7, for example, a voltage of 200V is formed when the DC system voltage is 800V. For example, if the allowed
  • Limit voltage of the memory module 6 is 550V, then a voltage applied by 600V could lead to damage of the memory modules 6 and possibly 7.
  • Symmetry resistors 14, 15 for which, after detection and measurement of the respective equivalent resistors 8, 11 have been dimensioned accordingly, that the voltage drop U6, U7 to the memory modules 6, 7, in particular to the equivalent resistors 8, 11 is preferably in the range of the desired 400V.
  • dimensioned symmetry resistors 14, 15 is advantageously ensured that when starting the battery storage system 1 damage to the memory modules 6, 7 and possibly further memory modules is prevented.
  • Switching elements 9,10 and 12, 13 turned on.
  • the battery storage system 1 is ready.
  • the memory modules 6, 6 ', 6 ", 7, 7', 7" in particular the memory modules 6, 7 loaded or unloaded or remain in the idle state.
  • the power supply is stopped, the switching elements of all memory modules open, the inverter 2 then the series strands 3, 4, 5 discharges.
  • the symmetry resistors are designed as variable resistors. These can preferably be used in measurements of the battery storage system 1.
  • FIG. 2 is a second embodiment of the invention
  • the memory modules 6, 6 ', 6 "and 7, 7', 7" are connected in parallel in their respective memory module systems 16, 17.
  • Memory modules in a memory module system 16, 17 can be selected arbitrarily high. Thus, it is also conceivable that in the first memory module system 16, three memory modules 6, 6 ', 6 "and in the second memory module system 17, a single memory module 7 or even a plurality of memory modules arranged.
  • At least one symmetry resistor 14 or 15 is connected in parallel to at least each memory module 6, 6 ', 6 ", 7, 7', 7" of the series strand 3. Compared to the first embodiment, however, the number of
  • Symmetry resistors 14, 15 per memory module 6, 6 ', 6 “, 7, 7', 7” are reduced, because a plurality of memory modules 6, 6 ', 6 “, 7, 7', 7" are connected in parallel. It is likewise conceivable to use further series trains in the battery storage module 1 according to FIG. 2

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

Abstract

La présente invention concerne un système d'accumulateur à batterie (1) comportant au moins une barre d'amenée de courant en série (3, 4, 5), dans chaque barre d'amenée de courant en série (3, 4, 5) au moins un premier module d'accumulateur (6, 6', 6") et un deuxième module d'accumulateur (7, 7', 7") étant raccordés électriquement en série l'un à autre, la barre d'amenée de courant en série (3, 4, 5) étant raccordée électriquement à un onduleur (2), qui est raccordé côté tension alternative à un réseau à tension alternative, au moins une résistance en symétrie (14, 15) étant respectivement raccordée en parallèle au moins à chaque module d'accumulateur ( 6, 6', 6", 7, 7', 7") respectif de la barre d'amenée de courant en série (3, 4, 5).
PCT/EP2018/079684 2017-11-13 2018-10-30 Système d'accumulateur à batterie WO2019091824A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102017010453 2017-11-13
DE102017010453.0 2017-11-13
DE102017011584.2A DE102017011584A1 (de) 2017-11-13 2017-12-14 Batteriespeichersystem
DE102017011584.2 2017-12-14

Publications (1)

Publication Number Publication Date
WO2019091824A1 true WO2019091824A1 (fr) 2019-05-16

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ID=66335152

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/079684 WO2019091824A1 (fr) 2017-11-13 2018-10-30 Système d'accumulateur à batterie

Country Status (2)

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DE (1) DE102017011584A1 (fr)
WO (1) WO2019091824A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019211142A1 (de) * 2019-07-26 2021-01-28 Siemens Mobility GmbH Verfahren zum Betreiben eines Schienenfahrzeugs und Schienenfahrzeug

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008040310A1 (de) * 2008-07-10 2010-01-14 Robert Bosch Gmbh Energiespeichereinrichtung und Verfahren zu deren Steuerung
DE102015007264A1 (de) * 2015-06-09 2016-12-15 Audi Ag Schnelles Übertragen von elektrischer Energie von einer Ladestation zu einem Verbraucher

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012011061A1 (de) * 2012-06-04 2013-12-05 Li-Tec Battery Gmbh Energieversorgungsvorrichtung mit einer ersten Leistung sowie Verfahren zum Betrieb dieser Energieversorgungsvorrichtung
CA2910934C (fr) * 2013-04-30 2019-02-26 Aleees Eco Ark Co. Ltd. Structure d'alimentation de vehicule electrique a grande echelle et methode associee de controle et de gestion de batterie en alternance d'hibernation
DE102015002149B4 (de) * 2015-02-18 2017-11-16 Audi Ag Batteriezelle für eine Batterie eines Kraftfahrzeugs, Batterie und Kraftfahrzeug

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008040310A1 (de) * 2008-07-10 2010-01-14 Robert Bosch Gmbh Energiespeichereinrichtung und Verfahren zu deren Steuerung
DE102015007264A1 (de) * 2015-06-09 2016-12-15 Audi Ag Schnelles Übertragen von elektrischer Energie von einer Ladestation zu einem Verbraucher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019211142A1 (de) * 2019-07-26 2021-01-28 Siemens Mobility GmbH Verfahren zum Betreiben eines Schienenfahrzeugs und Schienenfahrzeug

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