WO2022017773A1 - Procédé de détermination d'un état de charge dans un véhicule alimenté par batterie comprenant une pluralité de batteries pendant le fonctionnement du véhicule, et véhicule alimenté par batterie comprenant une pluralité de batteries - Google Patents

Procédé de détermination d'un état de charge dans un véhicule alimenté par batterie comprenant une pluralité de batteries pendant le fonctionnement du véhicule, et véhicule alimenté par batterie comprenant une pluralité de batteries Download PDF

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Publication number
WO2022017773A1
WO2022017773A1 PCT/EP2021/068616 EP2021068616W WO2022017773A1 WO 2022017773 A1 WO2022017773 A1 WO 2022017773A1 EP 2021068616 W EP2021068616 W EP 2021068616W WO 2022017773 A1 WO2022017773 A1 WO 2022017773A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
charge
batteries
multiple batteries
battery
Prior art date
Application number
PCT/EP2021/068616
Other languages
German (de)
English (en)
Inventor
Christof Kosubek
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 WO2022017773A1 publication Critical patent/WO2022017773A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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]
    • 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
    • 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
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • 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]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • B60L2240/545—Temperature
    • 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
    • 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
    • B60L2240/60—Navigation input
    • B60L2240/62—Vehicle position
    • B60L2240/622—Vehicle position by satellite navigation
    • 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
    • B60L2240/80—Time limits
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • B60L2260/54—Energy consumption estimation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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
    • 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
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • One aspect of the invention relates to a method for determining a state of charge in a battery-powered vehicle with multiple batteries while the vehicle is in operation. Another aspect of the invention relates to a battery powered vehicle having multiple batteries.
  • Battery-powered vehicles that are in continuous operation such as taxis, trucks and long-distance vehicles, have a technically caused deviation of the measured and displayed state of charge to the actual state of charge. This discrepancy is due to technical/commercial discrepancies in the measurement of the parameters, as well as the fact that the cells cannot relax sufficiently under this usage.
  • Columb counting means counting the charge that has flowed in and out of the battery. The deviations are reset after operation with a new load-free voltage measurement.
  • the invention is based on the object of creating a method with which the determination of a state of charge can be improved during operation of a battery-operated vehicle with a plurality of batteries. Furthermore, it is an object to create a corresponding battery-operated vehicle with multiple batteries.
  • One aspect of the invention relates to a method for determining a state of charge in a battery-powered vehicle with multiple batteries while the vehicle is in operation, the method comprising the steps:
  • determining the state of charge of the one of the plurality of batteries by measuring an open circuit voltage during operation of the vehicle.
  • This provides a method for determining a state of charge during operation of the vehicle.
  • This method enables the open circuit voltage measurement to be performed while the vehicle is in operation. For this purpose it is provided that one of the several batteries is disconnected from the load so that the open-circuit voltage can be measured. Depending on the open circuit voltage, the state of charge of one of the multiple batteries is determined.
  • the battery powered vehicle will have multiple batteries.
  • the batteries may be arranged such that one of the multiple batteries may be disconnected from the load during operation of the vehicle.
  • the load may be an electrical load connected to the vehicle's battery.
  • the consumer can in particular be an electric motor for driving the vehicle, a light source or a cooling unit. Provision can be made for one of the multiple batteries to be separated by a separating device. In particular, the disconnection of one of the multiple batteries occurs in such a way that the operation of the vehicle is not interrupted.
  • the open circuit voltage is measured during operation of the vehicle.
  • the one of the multiple batteries is disconnected from the load and the open circuit voltage is measured while the vehicle is running.
  • other of the multiple batteries may provide power to operate the vehicle while the one of the multiple batteries is disconnected from the load.
  • a state of charge is determined. For example, it can be provided that a corresponding state of charge can be assigned to a corresponding measured open-circuit voltage.
  • the state of charge can, for example, be specified as a percentage dependent on a maximum state of charge. This results in the advantage that the state of charge of one of the several batteries can also be determined during operation of the vehicle by measuring an open-circuit voltage during operation of the vehicle.
  • the measurement of the no-load voltage described above is particularly advantageous for vehicles that are operated without interruption for a longer period of time.
  • the no-load voltage can be measured before the vehicle is operated.
  • the state of charge can be determined. What is known as a charge count, ie a charge that has flowed into or out of one of the multiple batteries, can be counted continuously during operation of the vehicle.
  • a corrected state of charge can be provided. This corrected state of charge may deviate from the actual state of charge of the one of the multiple batteries during prolonged operation of the vehicle.
  • the state of charge can be determined again.
  • An advantageous exemplary embodiment provides for one of the multiple batteries to be disconnected from the load depending on whether a predefined respective threshold value is exceeded or not reached.
  • An advantageous exemplary embodiment provides that a temperature of one of the multiple batteries or a voltage difference between two of the multiple batteries is compared with the predefined threshold value for the disconnection.
  • An advantageous exemplary embodiment provides for a point in time for the disconnection of one of the multiple batteries to be determined as a function of a drive power that is likely to be required for a predetermined time interval.
  • the multiple batteries can be disconnected for the predetermined time interval, depending on the probable required drive power.
  • the predetermined time interval can then depend, for example, on the duration of the measurement of the no-load voltage. It is particularly advantageous here that the one of the multiple batteries can be separated at a time when only a small amount of drive power is required.
  • An advantageous exemplary embodiment provides for the probable required drive power to be determined as a function of navigation and/or habitual data.
  • the navigation data can contain, for example, an altitude and/or speed profile of a route. Based on these profiles, for example, a probable downhill ride, a downhill ride or a ride at low speed can be determined.
  • Another aspect of the invention relates to a battery-powered vehicle with multiple batteries, wherein
  • a disconnecting device for disconnecting one of the plurality of batteries from a load representing a consumer of the vehicle during operation of the vehicle
  • a measuring device for determining the state of charge of one of the multiple batteries by measuring an open-circuit voltage during operation of the vehicle.
  • the invention also includes the combination of features of the described embodiments. Further advantages, features and details of the invention result from the following description of a preferred exemplary embodiment and from the drawing.
  • the features and combinations of features mentioned above in the description and the features and combinations of features mentioned below in the description of the figures and/or shown alone in the single figure can be used not only in the combination specified, but also in other combinations or on their own, without the frame to abandon the invention.
  • FIG. shows a flowchart of an exemplary embodiment of a method for determining a state of charge in a battery-operated vehicle with a plurality of batteries while the vehicle is in operation;
  • a first step S1 it is provided that an open-circuit voltage is measured and the state of charge of one of the several batteries is determined before the vehicle is operated.
  • a charge is counted for a charge which flows into or out of one of the plurality of batteries.
  • a corrected state of charge can be calculated during operation of the vehicle.
  • the corrected state of charge takes place on the basis of the charge that has flowed in or out, depending on the state of charge determined in step S1.
  • step S3a it is determined whether the vehicle is no longer in operation S3a or whether the vehicle is still in operation S3b. If it was determined in step S3a that the vehicle is no longer in operation, step S1 can be carried out again. If it is determined in step S3b that the vehicle is still in operation, step S4 is carried out. In step S4, a temperature of one of the multiple batteries or a voltage difference between two of the batteries is compared with a predefined threshold value. Depending on comparisons, the battery can be disconnected in step S7 if the predefined respective threshold value is exceeded or not reached. This may be provided to prevent damage to the multiple batteries and to allow for an even discharge of the multiple batteries.
  • step S5 the probable required drive power for a predetermined time interval is determined.
  • the time interval can be dimensioned in such a way that the battery S7 can be disconnected and the no-load voltage S8 can be measured during this interval.
  • the drive power can be determined as a function of navigation and/or habitual data. In this case, for example, the route and/or altitude profile of a route can be taken into account.
  • the probable required drive power can be determined as a function of the elevation profile, ie whether, for example, an uphill or downhill trip is ahead. Provision can also be made for the probable required drive power to be determined as a function of habitual data, such as the speed of the vehicle or a possible overtaking maneuver.
  • a point in time for the disconnection S7 of one of the multiple batteries can be determined S6.
  • the point in time for the disconnection S7 of one of the multiple batteries can preferably be selected in such a way that the operation of the vehicle is only slightly influenced, but the operation of the vehicle is not interrupted.
  • step S6 one of the multiple batteries can be separated in step S7.
  • step S8 the open-circuit voltage of one disconnected battery is measured and the state of charge of the disconnected battery is determined.
  • step S9 it is provided that after the determination S8 of the state of charge, the battery disconnected from the load is reconnected to the load. After the disconnected battery has been connected, it can be provided that steps S2 to S9 are carried out again.
  • the battery-powered vehicle with multiple high-voltage batteries which can be a traction battery
  • one of the multiple batteries is disconnected from the load and a determination of the no-load voltage or a no-load voltage measurement (short: OCV) is performed.
  • the battery can be disconnected from the load depending on navigation and/or habitual data, so that one of the several batteries is only disconnected from the load if it can be foreseen that there will be no high drive power for the predetermined time interval, such as when driving on flat land, Downhill driving, traffic jams or no overtaking manoeuvres, is necessary, i.e. a reduced drive power is not noticeable for the driver.
  • one of the multiple batteries can also be disconnected from the load when parameters other than the state of charge, such as the temperature of the one of the multiple batteries or the voltage difference between two of the multiple batteries, exceed or fall below the threshold value.
  • parameters other than the state of charge such as the temperature of the one of the multiple batteries or the voltage difference between two of the multiple batteries, exceed or fall below the threshold value.
  • one of the multiple batteries can be disconnected without imposing restrictions on a driver.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention se rapporte à un procédé de détermination d'un état de charge dans un véhicule alimenté par batterie comprenant une pluralité de batteries pendant le fonctionnement (S3b) du véhicule, le procédé comprenant les étapes suivantes selon l'invention consistant : • à débrancher (S7) une batterie de la pluralité de batteries à partir d'une charge qui est un consommateur du véhicule, et • à déterminer (S8) l'état de charge de ladite batterie de la pluralité de batteries par mesure d'une tension de circuit ouvert pendant le fonctionnement (S3b) du véhicule.
PCT/EP2021/068616 2020-07-20 2021-07-06 Procédé de détermination d'un état de charge dans un véhicule alimenté par batterie comprenant une pluralité de batteries pendant le fonctionnement du véhicule, et véhicule alimenté par batterie comprenant une pluralité de batteries WO2022017773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020004356.9 2020-07-20
DE102020004356.9A DE102020004356A1 (de) 2020-07-20 2020-07-20 Verfahren zur Ermittlung eines Ladezustandes bei einem batteriebetriebenen Fahrzeug mit mehreren Batterien während eines Betriebs des Fahrzeugs, sowie batteriebetriebenes Fahrzeug mit mehreren Batterien

Publications (1)

Publication Number Publication Date
WO2022017773A1 true WO2022017773A1 (fr) 2022-01-27

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PCT/EP2021/068616 WO2022017773A1 (fr) 2020-07-20 2021-07-06 Procédé de détermination d'un état de charge dans un véhicule alimenté par batterie comprenant une pluralité de batteries pendant le fonctionnement du véhicule, et véhicule alimenté par batterie comprenant une pluralité de batteries

Country Status (2)

Country Link
DE (1) DE102020004356A1 (fr)
WO (1) WO2022017773A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0994362A2 (fr) * 1998-10-15 2000-04-19 VB Autobatterie GmbH Procédé pour determiner l'état de charge des batteries et leur capacité portante à haut courant
DE102009045526A1 (de) * 2009-10-09 2011-04-14 SB LiMotive Company Ltd., Suwon Verfahren zur Initialisierung und des Betriebs eines Batteriemanagementsystems
WO2013047400A1 (fr) * 2011-09-27 2013-04-04 三洋電機株式会社 Système de batterie, dispositif d'estimation de l'état de charge, véhicule électrique, corps mobile, dispositif de stockage d'énergie et dispositif d'alimentation électrique
US20170072811A1 (en) * 2015-09-11 2017-03-16 Ford Global Technologies, Llc Electric or hybrid vehicle battery pack voltage measurement functional assessment and redundancy
US20180093581A1 (en) * 2016-10-04 2018-04-05 Gs Yuasa International Ltd. Power supply device for vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0994362A2 (fr) * 1998-10-15 2000-04-19 VB Autobatterie GmbH Procédé pour determiner l'état de charge des batteries et leur capacité portante à haut courant
DE102009045526A1 (de) * 2009-10-09 2011-04-14 SB LiMotive Company Ltd., Suwon Verfahren zur Initialisierung und des Betriebs eines Batteriemanagementsystems
WO2013047400A1 (fr) * 2011-09-27 2013-04-04 三洋電機株式会社 Système de batterie, dispositif d'estimation de l'état de charge, véhicule électrique, corps mobile, dispositif de stockage d'énergie et dispositif d'alimentation électrique
US20170072811A1 (en) * 2015-09-11 2017-03-16 Ford Global Technologies, Llc Electric or hybrid vehicle battery pack voltage measurement functional assessment and redundancy
US20180093581A1 (en) * 2016-10-04 2018-04-05 Gs Yuasa International Ltd. Power supply device for vehicle

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