WO2018224284A1 - Procédé et dispositif permettant de faire fonctionner un système d'accumulation d'énergie électrique - Google Patents

Procédé et dispositif permettant de faire fonctionner un système d'accumulation d'énergie électrique Download PDF

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Publication number
WO2018224284A1
WO2018224284A1 PCT/EP2018/062935 EP2018062935W WO2018224284A1 WO 2018224284 A1 WO2018224284 A1 WO 2018224284A1 EP 2018062935 W EP2018062935 W EP 2018062935W WO 2018224284 A1 WO2018224284 A1 WO 2018224284A1
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WO
WIPO (PCT)
Prior art keywords
energy storage
electrical energy
state
storage unit
charge
Prior art date
Application number
PCT/EP2018/062935
Other languages
German (de)
English (en)
Inventor
Christoph Brochhaus
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN201880051557.4A priority Critical patent/CN110915097A/zh
Publication of WO2018224284A1 publication Critical patent/WO2018224284A1/fr

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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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • 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]
    • B60L58/15—Preventing overcharging
    • 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
    • B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
    • 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
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • 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
    • 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
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/005—Detection of state of health [SOH]
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • 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 present invention describes a method for operating an electrical energy storage system, comprising a plurality of electrical energy storage units.
  • a battery management system typically ensures the safe and reliable operation of associated battery cells and existing battery systems by currents, voltages, temperatures, insulation resistance and possibly other physical
  • the above sizes can be used to implement control functions that, among other things, can increase the service life, reliability and safety of the battery system.
  • a battery system is usually subdivided into modules which contain battery cells and often also form a spatial unit.
  • a battery system consist of 8 modules, each module 12 battery cells are installed.
  • the voltage sensors can be electrically connected, for example, directly to a central control unit or can also be electrically connected to a respective module control unit which forwards the recorded data, for example in compressed form, to the central control unit.
  • the functionality of the sensors installed in a battery system such as the voltage tion sensors, is therefore of great importance for the operation of the battery system.
  • a failure of a voltage sensor which can be detected for example by means of a self-test, for example, can lead to safety reasons that the battery system can no longer be taken or supplied electrical energy.
  • US 2016/0082859 A1 describes a method for the battery management of an electrically driven vehicle having a plurality of battery modules, wherein the vehicle has a control unit and a sort order for the plurality of battery modules is calculated. Depending on the position in the sort order, the battery modules are activated or not.
  • Document DE 10 2013 203 174 A1 describes a method for increasing the available capacity in a battery string having a plurality of battery cells.
  • the battery cells are adjusted as a function of the amount of electric charge actually present in the battery cells.
  • At least one aging state variable of the plurality of electrical energy storage units is determined within the method.
  • An aging state variable can be, for example, an electrical resistance of an electrical energy storage unit.
  • the charge state variable may in particular be an electrical voltage of an electrical energy storage unit.
  • the two mentioned method steps can also be carried out in a changed order.
  • a further charge state variable of a first electrical energy storage unit of the plurality of electrical energy storage units is determined as a function of the charge state variable of a second electrical energy storage unit of the plurality of electrical energy storage units, wherein the determination takes place at a different time from the aforementioned determination step.
  • the aging state variable of the first electrical energy storage unit and the aging state variable of the second electrical energy storage unit fulfill at least one predefined criterion.
  • a further charge state variable can advantageously be determined for this first energy storage unit, whereby a further advantage stems from the fact that this determination is based on the predefined criterion, whereby the electrical energy storage units, for example, in their electrical Behavior only slightly different.
  • the electrical energy storage system is subsequently operated using the further charge state variable of the first electrical energy storage unit.
  • the entire electrical energy storage system can continue to operate safely even in the event of failure of individual voltage sensors or generally the lack of corresponding measured values, for example, to bring it to a safe state with appropriate advance notice to a user. On an immediate fast shutdown with corresponding adverse consequences for the user or individual system components can thus be dispensed with.
  • the aging state variables of the plurality of electrical energy storage units are expediently sorted, for example in ascending numerical order, the predefined criterion comprising the sorting order.
  • the aging state variable of the second electrical energy storage unit in this sorting can be directly adjacent to the aging state variable of the first electrical energy storage unit and the second electrical energy storage unit or the charge state variable of the second electrical energy storage unit can thus be used to determine the further charge state variable of the first electrical energy storage unit.
  • the further charge state variable of the first electrical energy storage unit is determined as a function of the previously determined charge state variable of the first electrical energy storage unit.
  • the known state of charge state of the first electrical energy storage unit is thus used in order to support a subsequent determination of the further state of charge state.
  • already known values of the state of charge magnitude can be used, for example to serve for the initialization of a mathematical model, and on the other hand, the accuracy of the determination of the further state of charge state increases in an advantageous manner by the use of the already known values.
  • the mathematical model may include, for example, differential equations or algebraic equations.
  • a data-based map can also be part of the mathematical model.
  • the functionality of a device for determining a state of charge of the first electrical energy storage unit in particular comprising a voltage detection device is checked, with limited or lack of functionality of the device for determining a state of charge of the first electrical energy storage unit as described above, the further state of charge state is determined.
  • the further state of charge state is determined.
  • the electrical energy storage system is operated in such a way that a first limit value of the further charge state variable is not exceeded and / or a second limit value of the charge state variable of the electrical energy storage device is not undershot.
  • a sufficient distance to possibly the safety of the electrical energy storage system compromising voltage ranges can be specified.
  • a voltage value of 4.2 V can be used for the first limit value and a voltage value of 3.0 V for the second limit value.
  • the electrical energy storage system for example, despite the lack of measurement data with respect to the first electrical energy storage unit can be operated safely.
  • the further charge state variable may only move in a corridor of the charge state of 30% to 70%. The charge state typically moves in the range between 0% and 100% and can be regarded as currently available charge quantity.
  • the at least one predefined criterion comprises a maximum difference of the aging state variables.
  • the electrical energy storage system comprises a multiplicity of electrical energy storage units, and the further charge state variable of the first electrical energy storage unit is determined based on charge state variables of a further plurality of electrical energy storage units.
  • the aging state variable of the first electrical energy storage unit and the aging state variables of the further plurality of electrical energy storage units fulfill the at least one predefined criterion.
  • the second electrical energy storage unit is part of the further plurality of electrical energy storage units.
  • the further charge state variable of the first electrical energy storage unit is determined as a function of a change over time of a charge state variable.
  • This may, for example, be the change with time of the state of charge of the second electrical energy storage unit or also the temporal change, which results from a difference between a value of the state of charge of the first electrical energy storage unit and a value of the state of charge of the second electrical energy storage unit.
  • a last measured value of the first electrical energy storage unit considered to be valid in the temporal change can also be taken into account.
  • the accuracy of the method is advantageously increased.
  • not only static information is considered, but also the dynamic information of the temporal change.
  • This embodiment is also possible in the determination based on the further plurality of electrical energy storage units, for example by determining an average time change for the further plurality of electrical energy storage units.
  • the predefined criterion expediently comprises a respective spatial position of the electrical energy storage units in the electrical energy storage system.
  • the same or very similar thermal conditions prevail, for example, at the spatial position of the second electrical energy storage unit, which thus causes a similar aging behavior of the second electrical energy storage unit.
  • the electrical energy storage unit are combined into subgroups, for example modules, and thus a corresponding electrical energy storage unit of another subgroup is used to determine the further charge state variable.
  • An electric energy storage unit may in particular be understood to be an electrochemical battery cell and / or a battery module having at least one electrochemical battery cell and / or a battery pack having at least one battery module.
  • the electric energy storage unit may be a lithium-based battery cell or a lithium-based battery module or a lithium-based battery pack.
  • the electrical energy storage unit may be a lithium-ion battery cell or a lithium-ion battery module or a lithium-ion battery pack.
  • a capacitor is possible as an electrical energy storage unit.
  • the subject matter of the disclosure is a device for operating an electrical energy storage system, which comprises at least one means, in particular an electronic battery management device, which is set up to carry out the steps of the method according to one of the disclosed embodiments.
  • the at least one means can be, for example, a battery management control unit and corresponding power electronics, for example an inverter, as well
  • An electronic control unit in particular in the form of an electronic battery management device, can also be such a means.
  • An electronic control unit may, in particular, comprise an electronic control unit which, for example, has a microcontroller and / or an application-specific hardware component, e.g. an ASIC may be understood, but may also include a personal computer or a programmable logic controller.
  • the subject matter of the disclosure is an electrical energy storage system which comprises a plurality of electrical energy storage units and a device described above for operating an electrical energy storage system.
  • the advantages mentioned apply accordingly.
  • the subject matter of the disclosure is the use of the electrical energy storage system in electrically driven vehicles including hybrid vehicles, in stationary electrical energy storage systems, in electrically operated hand tools, in portable devices for telecommunications or data processing and in household appliances. The advantages mentioned apply accordingly.
  • Figure 1 is a schematic representation of an electrical Energy Appsys system according to the prior art
  • FIG. 2 shows a flowchart of the method according to the invention in accordance with a first embodiment
  • FIG. 3 shows a flow chart of the method according to the invention in accordance with a second embodiment
  • FIG. 4 shows a flow chart of the method according to the invention in accordance with a third embodiment
  • FIG. 5 shows a flowchart of the method according to the invention in accordance with a fourth embodiment
  • Figure 6 is a representation of a time course of a calculated according to the inventive method state of charge state.
  • Figure 7 is a schematic representation of an apparatus for operating an electrical energy storage system. Embodiments of the invention
  • FIG. 1 shows a schematic representation of an electrical energy storage system 1, more specifically a battery system 1, as known from the prior art.
  • the battery system 1 has a battery management control unit 2, which is connected via a data line 6 to three voltage detection devices 4.
  • the voltage detection devices 4 are each spatially associated with a so-called module 3, which summarizes several battery cells 7 spatially. From each belonging to a respective module 3 battery cell 7 corresponding test leads 5 are guided to the respective voltage detection device 4. The respective battery cell voltage is thus supplied to the respective voltage detection device 4 via these measuring lines 5.
  • the respective modules are connected to each other by means of corresponding module connector 8 electrically conductive.
  • FIG. 2 shows a flowchart of the method according to the invention according to a first embodiment.
  • a so-called health state also called “state of health” (SOH)
  • SOH state of health
  • Charge amount based - the so-called capacity of the electrical energy storage unit which is based on a nominal value.
  • a mathematical model of the electrical energy storage unit and corresponding control engineering structures such as an observer can be used for this purpose. For example, health conditions arise in the
  • a second step S12 an electrical voltage of the plurality of electrical energy storage units is then determined in each case, wherein the electrical voltage of an electrical energy storage unit can be regarded as an indicator of the state of charge. Furthermore, it is especially for the safety of the electrical energy storage system relevant that the electric energy storage system constituting electrical energy storage units do not exceed a certain voltage limit or not fall below.
  • a third step S13 a further electrical voltage of a first electrical energy storage unit of the plurality of electrical energy storage units is subsequently determined, this being done at a different time from the second step S12 and depending on the electrical voltage of a second electrical energy storage unit of the plurality of electrical energy storage units.
  • the health status of the first electrical energy storage unit and the health status of the second electrical energy storage unit fulfill a predefined criterion.
  • the predefined criterion is that the health statuses differ only by a predefined percentage.
  • the electrical energy storage system is then operated using the determined further electrical voltage of the first electrical energy storage unit.
  • the first step Sil may occur after the second step S12.
  • FIG. 3 shows a flowchart of the method according to the invention in accordance with a second embodiment.
  • a plurality of electrical energy storage units which comprises an electrical energy storage system, each have an electrical voltage which prevails between the typically two pole terminals of an electrical energy storage unit.
  • a health status based on a respective internal resistance value is determined for the plurality of electrical energy storage units.
  • a nominal internal resistance value for example, health conditions in the range between 100% and 120% result, since the internal resistance typically increases with increasing age of the electrical energy storage unit. Thus, the state of health can be considered an aging condition.
  • the ascertained health status values of the plurality of electrical energy storage units are sorted in ascending order, wherein a descending sorting is also possible.
  • the sorting sequence serves as a predefined criterion, which in a fourth step S24 is to be taken into account when determining a further electrical voltage of a first electrical energy storage unit of the plurality of electrical energy storage units based on an electrical voltage of a second electrical energy storage unit of the plurality of electrical energy storage units.
  • the first electrical energy storage unit and the second electrical energy storage unit directly follow each other, which indicates a similar aging behavior. Furthermore, the determination in the first step S21 and the determination in the fourth step S24 are made at different times.
  • FIG. 4 shows a flowchart of the method according to the invention in accordance with a third embodiment.
  • the mode of operation of a first step S31 corresponds to that of the above-described first step Sil and the mode of operation of a second step S32 of the second step S12 described above.
  • a third step S33 the operability of a device for determining a voltage, which comprises a voltage detection device described above, is checked. Upon detection of a limited or complete lack of functionality of the device, which may for example result from the breakage of a measuring line, a fourth step S34 is carried out.
  • a temporal change of an electrical voltage is determined. This is done by a value of the electrical voltage of the first electrical energy storage unit that has last been regarded as valid and a more recent determined value of the electrical voltage the second electrical energy storage unit, a difference value is formed, which is set to a corresponding time difference value of the two points in time of the determination in relation.
  • a further electrical voltage of the first electrical energy storage unit of the plurality of electrical energy storage units is determined by using the last determined valid value of the electrical voltage of the first electrical energy storage unit as the starting value and a corresponding temporal change of the electrical Voltage due to an energy storage or -aus Grandeung on the determined time change of the electrical voltage is mapped.
  • a sixth step S36 the electrical energy storage system is then operated using the further electrical voltage of the first electrical energy storage unit such that a first limit of the further electrical voltage of the first electrical energy storage unit is not exceeded and a second limit of the electrical voltage of the first electrical energy storage unit not is fallen short of.
  • a value for the electrical voltage of 4.2 V can be used as the first limit value and a value of 2.8 V as the second limit value.
  • FIG. 5 shows a flow chart of the method according to the invention in accordance with a fourth embodiment.
  • the electrical energy storage system to a plurality of electrical energy storage units I to IX, which as in
  • Figure 1 shown in spatially associated modules 3 are arranged.
  • a first step S41 as described above in the first step Sil, an aging state based on the capacity of the respective electrical energy storage unit is respectively determined for the electrical energy storage units I to IX.
  • the state of charge of the electrical energy storage units I to IX is determined in a second step S42.
  • the state of charge typically ranges between 0% and 100% and can be considered as the currently available amount of charge.
  • the charge state of a first electrical energy storage unit I of the plurality of electrical energy storage units I to IX is subsequently determined again at a later time than the two preceding steps, this being dependent on the charge states of a plurality of electrical energy storage units VI, VI II takes place, which are in other modules than the first electrical energy storage unit I.
  • the aging states of the plurality of electrical energy storage units I to IX determined in the first step S41 were sorted by modules.
  • the plurality of electrical energy storage units VI, VI II within the modular sort order the same rank as a predefined criterion as the first electrical energy storage unit I.
  • the used for later determination electrical energy storage units VI, VI II have a similar electrical behavior as the first electrical energy storage unit I. This is again exemplified in the following two tables.
  • the charging states of the electrical energy storage units VI, VI II are used in the calculation in the third step S43, since the electrical energy storage units VI, VII I have the same rank within the modular sorting as the electrical energy storage unit I.
  • FIG. 6 shows a representation of a time profile 64 of a state of charge quantity calculated according to the method according to the invention.
  • the state of charge is an electrical voltage that is typically between two poles of an electrical energy storage unit prevails.
  • the electrical voltage is plotted on the ordinate axis and the time course on the abscissa axis.
  • the device for detecting voltage on an electrical energy storage unit whose curve 64 calculated according to the method according to the invention is shown in dashed lines is no longer functional.
  • the last known voltage value of this electrical energy storage unit is 3.85 volts.
  • this electrical energy storage unit is part of an existing from four electrical energy storage units electrical energy storage system.
  • Time courses 61, 62, 63 of the electrical voltages of the remaining three electrical energy storage units are also shown. Furthermore, it has been determined that the aging state based on the capacity of the time-varying electric energy storage unit 62 is equal to the aging state of the electric energy storage unit with the non-functional voltage detection device. For time points after the point in time 1, the last known valid value of this electrical energy storage unit, ie 3.85 V, and corresponding later determined voltage values of the electrical energy storage unit are thus used to determine the electrical voltage of the electrical energy storage unit with the no longer functioning voltage detection device same aging state used. Thus, the time profile 64 of the electrical voltage results, even if no currently detected voltage values are present due to the failure of the device for voltage detection.
  • FIG. 7 shows a schematic illustration of a device 72 for operating an electrical energy storage system.
  • corresponding measured values which are used within the method of the invention to be carried out on the device are read in via corresponding sensors 71.
  • Corresponding control commands which result from the method according to the invention, are output by the device 72 to corresponding electrical or electronic components 73.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un procédé permettant de faire fonctionner un système d'accumulation d'énergie électrique comportant une pluralité d'unités d'accumulation d'énergie électrique, le procédé comprenant les étapes suivantes. Une étape consiste à déterminer respectivement au moins une grandeur d'état de vieillissement, en particulier une résistance électrique, de la pluralité d'unités d'accumulation d'énergie électrique. Une autre étape consiste à déterminer respectivement au moins une grandeur d'état de charge, en particulier une tension électrique, de la pluralité d'unités d'accumulation d'énergie électrique. Une autre étape consiste à déterminer une autre grandeur d'état de charge d'une première unité d'accumulation d'énergie électrique de la pluralité d'unités d'accumulation d'énergie électrique à un instant différent de celui de l'étape précédente, en fonction de la grandeur d'état de charge d'une seconde unité d'accumulation d'énergie électrique de la pluralité d'unités d'accumulation d'énergie électrique, la grandeur d'état de vieillissement de la première unité d'accumulation d'énergie électrique et la grandeur d'état de vieillissement de la seconde unité d'accumulation d'énergie électrique remplissant au moins un critère prédéfini. Une autre étape consiste à faire fonctionner le système d'accumulation d'énergie électrique en utilisant l'autre grandeur d'état de charge de la première unité d'accumulation d'énergie électrique.
PCT/EP2018/062935 2017-06-08 2018-05-17 Procédé et dispositif permettant de faire fonctionner un système d'accumulation d'énergie électrique WO2018224284A1 (fr)

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CN201880051557.4A CN110915097A (zh) 2017-06-08 2018-05-17 用于运行电蓄能***的方法和设备

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DE102017209659.4 2017-06-08
DE102017209659.4A DE102017209659A1 (de) 2017-06-08 2017-06-08 Verfahren und Vorrichtung zum Betrieb eines elektrischen Energiespeichersystems

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110018420A (zh) * 2019-05-07 2019-07-16 江苏吉意信息技术有限公司 电池剩余容量估计***和电池剩余容量估计方法

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