EP3977584A1 - Procédé pour faire fonctionner un accumulateur d'énergie électrique, accumulateur d'énergie électrique et dispositif - Google Patents

Procédé pour faire fonctionner un accumulateur d'énergie électrique, accumulateur d'énergie électrique et dispositif

Info

Publication number
EP3977584A1
EP3977584A1 EP20723106.9A EP20723106A EP3977584A1 EP 3977584 A1 EP3977584 A1 EP 3977584A1 EP 20723106 A EP20723106 A EP 20723106A EP 3977584 A1 EP3977584 A1 EP 3977584A1
Authority
EP
European Patent Office
Prior art keywords
electrical energy
energy store
connection
sensor
energy storage
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
EP20723106.9A
Other languages
German (de)
English (en)
Inventor
Jochen Weber
Joerg Schneider
Peter Kohn
Thomas Kaiser
Sabine Arnold
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.)
Robert Bosch GmbH
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
Publication of EP3977584A1 publication Critical patent/EP3977584A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by 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
    • 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
    • B60L58/24—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
    • 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
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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
    • 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
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • 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
    • B60L2250/00—Driver interactions
    • 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
    • B60L2250/00—Driver interactions
    • B60L2250/10—Driver interactions by alarm
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present invention relates to a method for operating an electrical energy store, an electrical energy store and a device according to the preamble of the independent claims.
  • US 2013/0169038 A1 shows a device for the uninterrupted supply of energy to an electric vehicle from batteries connected in series, which device comprises a bridging switch.
  • CN 203103992 U shows a control system for battery charge management and battery discharge management.
  • the essence of the invention in the method for operating an electrical energy store, having an electrical energy storage module, a switching unit and a first and second connection consists in the fact that the method has the following method steps that follow one another in time: in a first method step a signal from a sensor of the electrical energy storage is evaluated, wherein a critical state of the electrical energy store is determined in a second process step, wherein in a third process step an electrically conductive connection between the electrical energy storage module and the first and second connection in the charging direction is interrupted by means of the switching unit, while at the same time the electrically conductive connection between the electrical
  • Energy storage module and the first and second connection remains connected in the discharge direction.
  • the background to the invention is that when a critical state of an electrical energy store occurs, it is usually completely switched off. As a result, a device supplied by the electrical energy store, for example a vehicle, can enter a critical operating state. If, for example, the vehicle's electrical energy storage system fails while driving, not only an electric drive but also safety-related devices in the vehicle such as brake assistants, steering assistants and other failures
  • the electrical energy store can advantageously continue to be discharged in a critical state. At the same time, further charging of the electrical energy store, in particular by means of recuperation, is prevented. This allows the device in a safe
  • the senor is a cell voltage sensor, a temperature sensor, a current sensor and / or an output voltage sensor.
  • the critical state of the electrical energy store can be recognized by means of the respective sensor, namely a critical cell voltage and / or a critical current and / or a critical cell temperature and / or a critical
  • the electrical energy store continues to be operated in the discharge direction, the electrical energy store being monitored by means of the current sensor.
  • the device can be brought into a safer operating state. This is the electrical
  • the energy storage device continues to be monitored by means of the current sensor, so that the electrical energy storage device is activated if an overcurrent also occurs
  • a critical state of the electrical energy store is advantageously that a measured value of a sensor exceeds a critical maximum limit value or that a measured value falls below a critical minimum limit value or that a sensor fails or a control unit of the electrical energy store at least partially fails.
  • the critical state can therefore be identified by evaluating a signal from the sensor or by the absence of a signal.
  • a warning or an error message is output to a user or an external controller.
  • An adaptation of the operating strategy of the electrical energy store can be initiated by means of the warning notice or the error message. This can reduce the load on the electrical energy store.
  • the user preferably receives a message that he must visit a workshop in order to have the electrical energy storage device repaired.
  • Energy storage has an electrical energy storage module, a switching unit and a first and second connection, is that the electrical
  • Energy storage is set up, an electrically conductive connection between the to interrupt electrical energy storage module and the first and second connection by means of the switching unit simultaneously in the charging direction and connect in the discharging direction.
  • the background to the invention is that in a critical state of the electrical energy store it does not have to be completely switched off, but can continue to be discharged. At the same time, the interruption in the charging direction prevents further charging of the electrical energy store, so that overcharging can be prevented.
  • the electrical energy store has a control unit, a charge controller and a discharge controller.
  • the charge control and the discharge control can be controlled by the control unit and can be operated independently of one another.
  • the switching unit has at least one first switching means and at least one second switching means, in particular a matrix circuit of first switching means and second switching means. This means that the switching unit can be made compact.
  • the first switching means has at least one first MOSFET switch and the second switching means has at least one second MOSFET switch.
  • the essence of the invention in the device, in particular the vehicle, is that the device has an electrical energy store as described above or according to one of the claims relating to the electrical energy store.
  • the background to the invention is that the device can be brought into a safe operating state in the event of a critical state of the electrical energy store. For example, a vehicle can be parked safely or in one
  • FIG. 1 shows an electrical energy store 1 according to the invention
  • FIG. 2 shows a schematic flow diagram of a method 100 according to the invention for operating an electrical energy store 1.
  • the electrical energy store 1 shown in Fig. 1 has:
  • Terminal is arranged and set up to determine the voltage between the first and second terminal (5, 7).
  • the electrical energy storage module 18 has at least one electrical
  • Cell voltage sensor 16 at least one temperature sensor 15 and one
  • the electrical energy storage module 18 preferably has a plurality of electrical energy storage cells 17 which are arranged in series.
  • a cell voltage sensor 16 is assigned to each electrical energy storage cell 17, in particular connected in parallel to the respective electrical one
  • Energy storage cell 17 arranged, which is set up to determine the voltage of the respective electrical energy storage cell 17.
  • the current sensor 14 is arranged in series with the electrical energy storage cells 17 and is set up to determine the current flowing through the electrical energy storage cells 17.
  • At least one temperature sensor 15 is arranged in the electrical energy storage module 18.
  • a temperature sensor 15 is preferably arranged on each electrical energy storage cell 17.
  • the control unit 22 has an evaluation unit 13, a transceiver unit 12, a control unit 11 and a monitoring unit 10.
  • the evaluation unit 13 is connected to the transceiver unit 12 in a signal-conducting manner.
  • the transceiver unit 12 is connected to the control unit 11 in a signal-conducting manner.
  • Control unit 11 is connected to monitoring unit 10 in a signal-conducting manner.
  • the control unit 22 conducts signals with the sensors of the electrical
  • the evaluation unit 13 is set up to evaluate signals from the sensors and to send a measurement result from the sensors to the transceiver unit 12.
  • the transceiver unit 12 is set up to forward the measurement result to the control unit 11.
  • the control unit 11 is set up to send the measurement result to the
  • Monitoring unit 10 forward.
  • the monitoring unit 10 is set up to control the measuring unit 13, the transceiver unit 12 and / or the control unit 11 monitor and detect a failure of the measuring unit 13, the transceiver unit 12 and / or the control unit 11.
  • the control unit 22 conducts signals with the charging controller 8 and the
  • Discharge control 9 connected.
  • Monitoring unit 10 set up, the charging controller 8 and / or the
  • Discharge control 9 to control.
  • the switching unit 4 has at least one first switching means 2 and at least one second switching means 3, in particular a matrix of first switching means 2 and second switching means 3, by means of which the electrical energy storage module 18 can be electrically connected to the first and second connection (5, 7) is.
  • the first switching means 2 is set up to connect the electrical energy storage module 18 to the first and second connection (5, 7) for charging or to disconnect the connection.
  • the second switching means 3 is set up to connect the electrical energy storage module 18 to the first and second connection (5, 7) for discharging or to disconnect the connection.
  • the first switching means 2 is preferably designed as a first MOSFET 20 and the second switching means 3 is designed as a second MOSFET 21.
  • the charging controller 8 is connected to the second switching means 3 in a signal-conducting manner and is set up to control the second switching means 3.
  • the discharge control 9 is connected in a signal-conducting manner to the first switching means 2 and is set up to control the first switching means 2.
  • a resistor 19 is arranged between the switching unit 4 and the electrical energy storage module 18. The current flowing through the switching unit 4 can be determined by means of the resistor 19.
  • the control unit 22 monitors and controls the electrical energy store 1. For this purpose, the signals from the sensors of the electrical energy store module 18 are evaluated and monitored. As soon as the electrical energy store 1 has a critical state, for example a measured value exceeds a critical maximum limit value or falls below a critical minimum limit value or a sensor fails, the charge control 8 and / or the discharge control 9 can be controlled in order to protect the electrical energy store 1.
  • the charging controller can prevent 8 charging processes, while the discharging controller still allows 9 discharging processes. Charges and
  • Unloading processes are prevented at the same time or loading processes are allowed and unloading processes are prevented. Charging processes and discharging processes can therefore be controlled independently of one another.
  • control unit 22 is connected in a signal-conducting manner to a vehicle control of an electrically driven vehicle.
  • the control unit 22 is set up to control the electrical energy store 1 in accordance with the vehicle control commands of the vehicle control.
  • control unit 22 is set up to send an error message from the electrical energy store 1 to the vehicle controller. For example, a driving speed or range of the vehicle can be limited or an error message can be displayed when the electrical energy store 1 is in a critical state.
  • FIG. 2 the inventive method 100 for operating an electrical energy store 1 having an electrical energy storage module 18, a switching unit 4 and a first and second connection (5, 7) is shown schematically.
  • the method 100 has the following sequential ones
  • a signal from a sensor of the electrical energy store 1 is evaluated.
  • the sensor is a cell voltage sensor 16 and / or a temperature sensor 15 and / or a current sensor 14 and / or a
  • a critical state of the electrical energy store 1 is determined.
  • Energy store 1 consists, for example, in the fact that a measured value of a sensor exceeds a critical maximum limit value or falls below a critical minimum limit value or that a sensor fails.
  • a third method step 103 an electrically conductive connection between the electrical energy storage module 18 and the first and second connection (5, 7) in the charging direction is interrupted by means of the switching unit 4, while the electrically conductive connection between the electrical energy storage module 18 and the first and second connection (5, 7) remains connected in the unloading direction.
  • the electrical energy store (1) can therefore continue to be discharged but no longer charged.
  • a warning or an error message is output to a user or an external controller.
  • the critical state of the electrical energy store 1 may preferably not exceed a predetermined critical time span. Should this critical period of time be exceeded, the electrically conductive connection between the
  • An electrical energy storage device is a rechargeable one
  • the energy storage cell can be implemented as a lithium-based battery cell, in particular a lithium-ion battery cell.
  • the energy storage cell is designed as a lithium-polymer battery cell or a nickel-metal hydride battery cell or a lead-acid battery cell or a lithium-air battery cell or a lithium-sulfur battery cell.

Landscapes

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

Abstract

L'invention concerne un procédé pour faire fonctionner un accumulateur d'énergie électrique (1), un accumulateur d'énergie électrique (1) et un dispositif, comprenant un module d'accumulateur d'énergie électrique (18), une unité de commutation (4) ainsi qu'un premier et un deuxième branchement (5, 7). Le procédé comprend les étapes successives consistant : à évaluer un signal d'un capteur de l'accumulateur d'énergie électrique (1) au cours d'une première étape de procédé ; à déterminer un état critique de l'accumulateur d'énergie électrique (1) au cours d'une deuxième étape de procédé ; à interrompre une liaison électroconductrice entre le module d'accumulateur d'énergie électrique (18) et le premier et deuxième branchement (5, 7) dans la direction de charge au moyen de l'unité de commutation (4), au cours d'une troisième étape de procédé, tout en maintenant simultanément la liaison électroconductrice entre le module d'accumulateur d'énergie électrique (18) et le premier et deuxième branchement (5, 7) dans la direction de décharge.
EP20723106.9A 2019-05-26 2020-04-29 Procédé pour faire fonctionner un accumulateur d'énergie électrique, accumulateur d'énergie électrique et dispositif Pending EP3977584A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019207692.0A DE102019207692A1 (de) 2019-05-26 2019-05-26 Verfahren zum Betreiben eines elektrischen Energiespeichers, elektrischer Energiespeicher und Vorrichtung
PCT/EP2020/061918 WO2020239353A1 (fr) 2019-05-26 2020-04-29 Procédé pour faire fonctionner un accumulateur d'énergie électrique, accumulateur d'énergie électrique et dispositif

Publications (1)

Publication Number Publication Date
EP3977584A1 true EP3977584A1 (fr) 2022-04-06

Family

ID=70480289

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JP4844468B2 (ja) 2007-05-08 2011-12-28 富士電機株式会社 二次電池保護装置及び半導体集積回路装置
JP5208149B2 (ja) * 2009-04-09 2013-06-12 パナソニック株式会社 保護回路、及び電池パック
KR101093928B1 (ko) 2009-11-26 2011-12-13 삼성에스디아이 주식회사 배터리 셀의 고온 스웰링을 방지할 수 있는 배터리 팩 및 그 방법
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CN113924708A (zh) 2022-01-11
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US11865925B2 (en) 2024-01-09
WO2020239353A1 (fr) 2020-12-03

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