CN112776668A - Method for charging an electrical energy accumulator system, electrical energy accumulator system and vehicle - Google Patents

Method for charging an electrical energy accumulator system, electrical energy accumulator system and vehicle Download PDF

Info

Publication number
CN112776668A
CN112776668A CN202011246363.5A CN202011246363A CN112776668A CN 112776668 A CN112776668 A CN 112776668A CN 202011246363 A CN202011246363 A CN 202011246363A CN 112776668 A CN112776668 A CN 112776668A
Authority
CN
China
Prior art keywords
electrical energy
charge
state
group
stores
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
CN202011246363.5A
Other languages
Chinese (zh)
Inventor
C·沃尔
M·巴尔
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 CN112776668A publication Critical patent/CN112776668A/en
Pending legal-status Critical Current

Links

Images

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
    • 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
    • B60L58/22—Balancing the charge of battery modules
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • 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
    • 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
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells 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
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • 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
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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]
    • 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
    • Y02T10/7072—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

Abstract

The invention relates to a method for charging an electrical energy accumulator system, which is associated with a group of electrical energy accumulators, wherein the method comprises the following method steps in temporal succession: wherein in a first method step the state of charge of the electrical energy store is detected; in a second method step, it is determined which electrical energy store has the highest state of charge and which electrical energy store has the lowest state of charge; in a third method step, it is checked whether the electrical energy stores having the lowest state of charge and the highest state of charge are assigned to the same group; in a fourth method step, if the electrical energy store with the highest state of charge and the electrical energy store with the lowest state of charge belong to the same group, the electrical energy store system is charged according to the first variant; and the subsequent fifth, sixth and seventh method steps.

Description

Method for charging an electrical energy accumulator system, electrical energy accumulator system and vehicle
Technical Field
The invention relates to a method for charging an electrical energy accumulator system, to an electrical energy accumulator system and to a vehicle.
Background
CN 106585409 a describes a battery management system.
WO 2018/190796 a1 describes a charging system for a plurality of batteries.
CN 105644386 a illustrates an electric vehicle with a battery management system.
CN 1038026787 a illustrates a battery management system for an electric vehicle.
Disclosure of Invention
In a method for charging an electrical energy accumulator system having electrical energy accumulators which are each associated with a group of electrical energy accumulators, the core of the invention is that the method comprises the method steps which are successive in time: in a first method step, the state of charge of the electrical energy stores is detected, wherein in a second method step it is determined which electrical energy store has the highest state of charge and which electrical energy store has the lowest state of charge, wherein in a third method step it is checked whether the electrical energy store having the lowest state of charge and the electrical energy store having the highest state of charge are assigned to electrical energy stores of the same group, wherein in a fourth method step, if the electrical energy store having the highest state of charge and the electrical energy store having the lowest state of charge are assigned to electrical energy stores of the same group, the electrical energy store system is charged according to a first variant, wherein in a fifth method step it is checked whether all electrical energy stores are to be charged up to the maximum state of charge if the electrical energy store having the highest state of charge and the electrical energy store having the lowest state of charge are assigned to electrical energy stores of different groups, in a sixth method step, the electric energy accumulator system is charged according to the second variant if not all the electric energy accumulators are to be charged up to a maximum state of charge, and in a seventh method step, the electric energy accumulator system is charged according to the third variant if all the electric energy accumulators are to be charged up to a maximum state of charge.
The invention is based on the insight that the method for charging can be adapted to different requirements for the operating strategy, in particular the charging time and/or the charging schedule, for example whether a replacement of the electrical energy accumulator should be carried out. This is advantageous for an electrical energy accumulator system whose electrical energy accumulators can have different states of charge. The states of charge of the electrical energy stores can be equalized with one another step by step during the method (angleichen). In this case, an early interruption of the method is possible if the electrical energy stores of a group of electrical energy stores have the same charge state.
Advantageously, all the electrical energy accumulators of the electrical energy accumulator system can be charged by means of a single, in particular integrated, charging device.
Further advantageous embodiments of the invention are the subject matter of the dependent claims.
According to one advantageous embodiment, the electrical energy stores of a group of electrical energy stores are associated with the same drive axle (antitiebsachse) of the vehicle and/or with the same electric motor of the vehicle and/or are of the same type and/or are arranged in series. In this case, the charging parameters can be adapted to different groups of electrical energy stores. It is possible to charge a group of electrical energy accumulators simultaneously.
In this case, it is advantageous if, in a fourth method step, the electrical energy store with the lowest state of charge is charged until it has the same state of charge as the electrical energy store with the highest state of charge, wherein the electrical energy stores of the other group of electrical energy stores are subsequently charged until they reach the state of charge of the electrical energy store with the highest state of charge. The group of electrical energy stores is therefore charged first, and the electrical energy stores must absorb the greatest amount of energy in order to equalize the state of charge of the electrical energy stores. As a result, the electrical energy accumulator system has an overall state of charge which is as high as possible when the charging process is interrupted early. Furthermore, the balancing effort for the electrical energy accumulator can be reduced.
Advantageously, the electrical energy store of the group that is not just charged can be cooled and/or relaxed.
Furthermore, it is advantageous if, in the sixth method step, the electrical energy store with the lowest state of charge is charged until it has reached the state of charge of the electrical energy store with the highest state of charge in the group of electrical energy stores associated with it, wherein the electrical energy stores of the other group of electrical energy stores are subsequently charged until they have reached the state of charge of the electrical energy store with the highest state of charge in the group, wherein starting with the electrical energy store with the lowest state of charge in the group, wherein subsequently all electrical energy stores are charged simultaneously until they have reached the state of charge of the electrical energy store with the highest state of charge of all electrical energy stores. By charging the electrical energy store with the lowest state of charge first, a deep discharge of the electrical energy store can be avoided during the discharge of the electrical energy store system after an early interruption of the charging process. When charging according to the second variant, a balancing of the state of charge of the electrical energy stores in a group is important. Only when the states of charge in all groups of electrical energy stores are equalized is the electrical energy store charged up to the state of charge of the electrical energy store with the highest state of charge.
Furthermore, it is advantageous if, in the seventh method step, the electrical energy store with the lowest state of charge is charged until it has reached the state of charge of the electrical energy store with the highest state of charge in the group, wherein subsequently all electrical energy stores of the group are charged until they have reached the state of charge of the electrical energy store with the highest state of charge of all electrical energy stores, wherein then the electrical energy store with the lowest state of charge of the electrical energy stores of the other group is charged until it has reached the state of charge of the electrical energy store with the highest state of charge of all electrical energy stores. This requires fewer interruptions of the charging process to replace the electrical energy accumulator to be charged. Compared to the second variant, the electrical energy accumulator system can be charged up to a maximum charge state more quickly.
According to a further advantageous embodiment, when a group of electrical energy stores has more than two electrical energy stores, in order to charge all electrical energy stores of a group, the electrical energy store with the lowest state of charge in the group is started and the electrical energy store with the higher state of charge is charged as soon as the electrical energy store with the lowest state of charge has reached the state of charge of the corresponding electrical energy store with the higher state of charge. Thus, the electrical energy stores having the same state of charge can be charged simultaneously.
Advantageously, in a fourth method step or a sixth method step or an eighth method step following the seventh method step, all the electrical energy accumulators are charged up to a maximum state of charge and/or the method for charging the electrical energy accumulator system is ended. Depending on the available charging time and/or operating strategy, the electrical energy store is charged or not charged up to a maximum charge state.
According to a further advantageous embodiment, if the electrical energy accumulator system has more than two groups of electrical energy accumulators, after the fourth or sixth or seventh method step, the electrical energy accumulator having the lowest state of charge at the time and the electrical energy accumulator having the second highest state of charge at the time are determined and the method for the electrical energy accumulators is continued with the third method step. The method can therefore be used for electrical energy stores having any desired number of groups of electrical energy stores.
The invention is based on an electrical energy accumulator system having electrical energy accumulators which are each associated with a group of electrical energy accumulators, wherein the electrical energy accumulator system is provided for charging by means of a method as described above or according to any one of the claims relating to the method.
The background of the invention is that these electrical energy stores can be grouped according to their characteristics or requirements for charging parameters.
Advantageously, the electrical energy stores of a group of electrical energy stores are of the same type and/or are arranged in series.
The core of the invention is for the vehicle to have an electrical energy accumulator system as described above or according to any of the claims relating to an electrical energy accumulator system.
The background of the invention is that the charging strategy for an electrical energy store of a vehicle can be adapted to the operating strategy of the vehicle.
For example, for a vehicle traveling a predetermined route with a predetermined stopping time, different variants of the method may be selected depending on the state of charge and the operating strategy of the vehicle.
Advantageously, the electrical energy accumulators of a group of electrical energy accumulators are associated with the same drive axle and/or the same electric motor of the vehicle.
The above-described embodiments and modifications can be combined with one another as desired, provided that they are of interest. Other possible configurations, improvements and implementations of the invention also include combinations of features of the invention not explicitly mentioned above or described below with respect to the exemplary embodiments. The person skilled in the art can also add individual aspects as modifications or additions to the respective basic forms of the invention.
Drawings
The invention is illustrated in the following paragraphs by means of examples from which further inventive features may be derived, but the invention is not limited in its scope to these examples. These embodiments are illustrated in the accompanying drawings. In which is shown:
figure 1 shows a schematic view of a first embodiment of a vehicle 1 according to the invention,
fig. 2 shows a schematic view of a second embodiment of a vehicle 101 according to the invention, and
fig. 3 shows a flow diagram of a method 200 according to the invention for charging at least two electrical energy stores (6, 9, 106, 109).
Detailed Description
Fig. 1 shows a drive train of a vehicle 1 according to the invention.
The vehicle 1 includes:
-a first drive axle 3 for driving the vehicle,
-a second drive axle 7 which is,
-a third drive axle 14 for driving the vehicle,
-a fourth drive axle 8 which is,
-a first transmission means 2 for transmitting the rotational force,
-a second transmission mechanism 13 for transmitting the rotational force,
-a first electric motor 4 for driving the motor,
-a second electric motor 12 for driving the motor,
-a third electric motor 15 for driving the motor,
-a fourth electric motor 19 for driving the motor,
an electrical energy accumulator system having three first electrical energy accumulators (6 a, 6b, 6 c) and three second electrical energy accumulators (9 a, 9b, 9 c),
a first inverter (Umrichter) 5,
-a second inverter 10 for converting the voltage of the power supply,
-a third inverter 16 for converting the voltage of the alternating current,
a fourth inverter 18, and
a control unit 17.
The electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9 c) of the electrical energy accumulator system are each associated with a group of electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9 c). The first electrical energy accumulator (6 a, 6b, 6 c) forms a first group of electrical energy accumulators (6 a, 6b, 6 c). The second electrical energy accumulators (9 a, 9b, 9 c) form a second group of electrical energy accumulators (9 a, 9b, 9 c).
The first electrical energy accumulators (6 a, 6b, 6 c) are arranged in series.
Preferably, the first electrical energy stores (6 a, 6b, 6 c) are of the same type, in particular they have the same storage capacity and/or the same maximum voltage and/or the same maximum charging current and/or the same maximum discharging current.
The second electrical energy accumulators (9 a, 9b, 9 c) are arranged in series.
Preferably, the second electrical energy stores (9 a, 9b, 9 c) are of the same type, in particular they have the same storage capacity and/or the same maximum voltage and/or the same maximum charging current and/or the same maximum discharging current.
The first electrical energy accumulator (6 a, 6b, 6 c) is preferably designed differently from the second electrical energy accumulator (9 a, 9b, 9 c). For example, the first electrical energy store (6 a, 6b, 6 c) is designed as an electrical high-power energy store and the second electrical energy store (9 a, 9b, 9 c) is designed as an electrical high-power energy store.
The first drive axle 3 can be connected, in particular can be coupled, to the first electric motor 4 and/or the fourth electric motor 19 by means of the first transmission 2. The first drive axle 3 can be driven by means of the first electric motor 4 and/or the fourth electric motor 19.
The second drive axle 7 can be connected, in particular can be coupled, to the second electric motor 12 and/or the third electric motor 15 by means of a second transmission 13. The second drive axle 7 can be driven by means of the second electric motor 12 and/or the third electric motor 15.
The third drive axle 14 can be connected, in particular can be coupled, to the second electric motor 12 and/or the third electric motor 15 by means of the second gear mechanism 13. The third drive axle 14 can be driven by means of the second electric motor 12 and/or the third electric motor 15.
The fourth drive axle 8 can be connected, in particular can be coupled, to the first electric motor 4 and/or the fourth electric motor 19 by means of the first transmission 2. The fourth drive axle 8 can be driven by the first electric motor 4 and/or the fourth electric motor 19.
Alternatively, the first drive axle 3 and the fourth drive axle 8 and/or the second drive axle 7 and the third drive axle 14 are designed in one piece, for example as a front axle and/or as a rear axle of the vehicle 1.
The first gear mechanism 2 and/or the second gear mechanism 13 are designed as a coupling gear mechanism and/or as a superposition gear mechanism and/or as a differential gear mechanism.
The first electric motor 4 is electrically conductively connected to a first inverter 5. The first electric motor 4 is fed by a first inverter 5. The first inverter 5 is electrically conductively connected to the first electrical energy store (6 a, 6b, 6 c). The first inverter 5 is provided for generating an alternating voltage for the first electric motor 4 from the direct voltage of the first electrical energy accumulator (6 a, 6b, 6 c).
The second electric motor 12 is electrically conductively connected to the second inverter 10. Here, the second electric motor 12 is fed by the second inverter 10. The second inverter 10 is electrically conductively connected to the second electrical energy store (9 a, 9b, 9 c). A second inverter 10 is provided for generating an alternating voltage for the second electric motor 12 from the direct voltage of the second electrical energy accumulator (9 a, 9b, 9 c).
The third electric motor 15 is connected in an electrically conductive manner to a third inverter 16. Here, the third electric motor 15 is fed by a third inverter 16. The third inverter 16 is electrically conductively connected to the second electrical energy accumulator (9 a, 9b, 9 c). The third inverter 16 is provided for generating an alternating voltage for the third electric motor 15 from the direct voltage of the second electrical energy accumulator (9 a, 9b, 9 c).
The fourth electric motor 19 is electrically conductively connected to the fourth inverter 18. The fourth electric motor 19 is fed by the fourth inverter 18. The fourth inverter 18 is electrically conductively connected to the first electrical energy accumulator (6 a, 6b, 6 c). The fourth inverter 18 is provided for generating an alternating voltage for the fourth electric motor 19 from the direct voltage of the first electrical energy accumulator (6 a, 6b, 6 c).
The electrical energy accumulator system is electrically conductively connected to an external charging station by means of a charging device (not shown in the figures) integrated into the vehicle 1. The charging device is provided for charging the first electrical energy accumulator (6 a, 6b, 6 c) and/or the second electrical energy accumulator (9 a, 9b, 9 c). For this purpose, a switching unit is arranged between the charging device and the electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9 c). The switching unit is provided for electrically conductively connecting the charging device to one or more electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9 c). For this purpose, the switching unit has a switching device.
The control unit 17 is connected in a signal-conducting manner to the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9 c), the inverters (5, 10, 16, 18), the charging device and the switching unit, in particular by means of a data bus, for example a CAN bus. Preferably, the control unit 17 is connected to the charging device by means of a switching unit. The control unit 17 is provided for detecting and evaluating an operating state, in particular a charging state, of the respective electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9 c) and for actuating the switching unit and/or the charging device as a function of the operating state of the respective electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9 c).
The control unit 17 is preferably designed as a central control unit of the vehicle 1. As a central control unit of the vehicle 1, the control unit 17 is connected in a signal-conducting manner with sensors and operating interfaces of the vehicle 1.
In fig. 2 a second embodiment of a vehicle 101 according to the invention is shown.
In addition to the electrical accumulator system of the vehicle 1 according to the first exemplary embodiment, the electrical accumulator system of the vehicle 101 according to the second exemplary embodiment of the invention has a third electrical accumulator (109 a, 109b, 109 c) and a fourth electrical accumulator (106 a, 106b, 106 c).
The third electrical energy stores (109 a, 109b, 109 c) are arranged in series. The third electrical energy accumulator (109 a, 109b, 109 c) forms a third group of electrical energy accumulators (109 a, 109b, 109 c).
Preferably, the third electrical energy stores (109 a, 109b, 109 c) are of the same type, in particular they have the same storage capacity and/or the same maximum voltage and/or the same maximum charging current and/or the same maximum discharging current.
The fourth electrical energy accumulators (106 a, 106b, 106 c) are arranged in series. The fourth electrical energy accumulator (106 a, 106b, 106 c) forms a fourth group of electrical energy accumulators (106 a, 106b, 106 c).
Preferably, the fourth electrical energy stores (106 a, 106b, 106 c) are of the same type, in particular they have the same storage capacity and/or the same maximum voltage and/or the same maximum charging current and/or the same maximum discharging current.
The first electrical energy accumulator (6 a, 6b, 6 c) is preferably designed differently from the second electrical energy accumulator (9 a, 9b, 9 c) and/or the third electrical energy accumulator (109 a, 109b, 109 c) and/or the fourth electrical energy accumulator (106 a, 106b, 106 c). For example, the first electrical energy store (6 a, 6b, 6 c) and/or the fourth electrical energy store (106 a, 106b, 106 c) are designed as electrical high-power energy stores and the second electrical energy store (9 a, 9b, 9 c) and/or the third electrical energy store (109 a, 109b, 109 c) are designed as electrical high-power energy stores.
The first electrical energy accumulator (6 a, 6b, 6 c) is electrically conductively connected to the first electric motor 4, wherein a first inverter 5 is connected between the first electrical energy accumulator (6 a, 6b, 6 c) and the first electric motor 4.
The second electrical energy accumulator (9 a, 9b, 9 c) is electrically conductively connected to the second electric motor 12, wherein a second inverter 10 is connected between the second electrical energy accumulator (9 a, 9b, 9 c) and the second electric motor 12.
The third electrical energy accumulator (109 a, 109b, 109 c) is electrically conductively connected to the third electric motor 15, wherein a third inverter 16 is connected between the third electrical energy accumulator (109 a, 109b, 109 c) and the third electric motor 15.
The fourth electrical energy accumulator (106 a, 106b, 106 c) is electrically conductively connected to the fourth electric motor 19, wherein a fourth inverter 18 is connected between the fourth electrical energy accumulator (106 a, 106b, 106 c) and the fourth electric motor 19.
Fig. 3 shows a time-based flowchart of a method 200 for charging an electrical energy accumulator system. The electrical energy accumulator system has electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) which are each associated with a group of electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), in particular a first group of electrical energy accumulators (6 a, 6b, 6 c) or a second group of second electrical energy accumulators (9 a, 9b, 9 c) or a third group of electrical energy accumulators (109 a, 109b, 109 c) or a fourth group of electrical energy accumulators (106 a, 106b, 106 c).
In a first method step 201, the charge state of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) is detected.
In a second method step 202, it is determined which electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) has the highest state of charge and which electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) has the lowest state of charge.
In a third method step 203, it is checked whether the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge and the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge are associated with the same group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c).
In this case, a group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) has electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) which are assigned to the same transaxle (3, 7, 8, 14) of the vehicle 1 and/or to the same electric motor (4, 12, 15, 19) of the vehicle 1 and/or which are of the same type and/or are arranged in a series circuit.
If the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the highest state of charge and the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the lowest state of charge are assigned to the same group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), in a fourth method step 204 the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the lowest state of charge is charged until it has the highest state of charge as the electrical energy store (6 a, 6b, 9c, 106a, 106b, 109 c) with the highest state of charge, 9c, 106a, 106b, 106c, 109a, 109b, 109 c). Subsequently, the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106c, 109a, 109b, 109 c) of a further group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are charged until they reach the highest state of charge, starting with the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge in the group, and starting as soon as the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge has reached the corresponding electrical energy store (6 a, 9b, 9c, 6b, 9 c) having the higher state of charge, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having a higher state of charge is charged.
If the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the highest charge state and the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the lowest charge state are assigned to different groups of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), it is checked in a fifth method step whether all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are to be charged up to the highest charge state.
If not all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are to be charged up to the maximum state of charge, in a sixth method step 206 the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge are charged until they have reached the state of charge of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge among the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of the group to which they are assigned. Charging of the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106c, 109a, 109b, 109 c) of a further group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) is then carried out until the electrical energy stores have reached the state of charge of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge in the group, in which case the start with the electrical energy store (6 a, 6b, 6c, 9a, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge in the group. Subsequently, all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are charged simultaneously until they have reached the state of charge of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge.
If all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are to be charged up to a maximum state of charge, in a seventh method step 207 the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the lowest state of charge is charged until it has reached the state of charge of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the highest state of charge within the group. All the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of the group are then charged until they have reached the charge state of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest charge state. The electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge at this point in time are then charged until they have reached the state of charge of the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge of all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c). This is done until all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) have reached the state of charge of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the highest state of charge.
In an eighth method step 208 following the fourth method step 204 or the sixth method step 206 or the seventh method step 207, all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are charged simultaneously up to a maximum state of charge and/or the method for charging the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) is terminated.
The maximum charge state of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) is the charge state up to which the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) can be charged to the maximum without being damaged thereby. The electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) has the maximum charging state if it (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) has reached its maximum charging voltage.
If the electrical energy accumulator system has more than two groups of electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), then, after the fourth method step 204 or the sixth method step 206 or the seventh method step 207, before all electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are charged to the maximum charge state, the electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest charge state at that time and the electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 109b, 109 c) having the second highest charge state at that time are determined, 109b, 109 c) and the method for the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) is continued with a third method step 203.
An electrical energy accumulator is understood here to mean a rechargeable energy accumulator, in particular an energy accumulator having electrochemical energy accumulator cells and/or an energy accumulator module having at least one electrochemical energy accumulator cell and/or an energy accumulator group having at least one energy accumulator module. The energy storage unit can be designed as a lithium-based battery unit, in particular as a lithium-ion battery unit. Alternatively, the energy storage unit is designed as a lithium polymer battery unit or a nickel metal hydride battery unit or a lead-acid battery unit or a lithium air battery unit or a lithium sulfur battery unit.
By a vehicle is understood here a land craft, in particular a car or bus or a truck or a mobile working machine or an unmanned transport system, or a watercraft or an aircraft. The vehicle may be designed to be autonomously controllable.

Claims (12)

1. A method (200) for charging an electrical energy accumulator system having electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) each associated with a group of electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), wherein the method has temporally successive method steps:
wherein in a first method step (201) the state of charge of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) is detected,
wherein in a second method step (202) it is determined which electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) has the highest charge state and which electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) has the lowest charge state,
wherein it is checked in a third method step (203) whether the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge and the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge are associated with the same group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c),
in a fourth method step (204), the electrical energy storage system is charged according to the first variant if the electrical energy storage device (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the highest state of charge and the electrical energy storage device (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the lowest state of charge are assigned to the same group of electrical energy storage devices (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c),
in a fifth method step (205), if the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the highest charge state and the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) with the lowest charge state are associated with different groups of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), it is checked whether all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are to be charged up to the highest charge state,
in a sixth method step (206), if not all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are to be charged up to a maximum state of charge, the electrical energy store system is charged according to a second variant,
in a seventh method step (207), the electric energy accumulator system is charged according to a third variant if all the electric energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are to be charged up to a maximum charge state.
2. The method (200) of claim 1,
characterized in that the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of a group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are associated with the same drive axle (3, 7, 8, 14) of the vehicle (1, 101) and/or with the same electric motor (4, 12, 15, 19) of the vehicle (1, 101) and/or are of the same type and/or are arranged in series.
3. The method (200) of any of the preceding claims,
in a fourth method step (204), the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge is charged until it has the same state of charge as the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge, wherein subsequently the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of the other group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) is charged until it has the highest state of charge of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106c, 109a, 109b, 109 c) and until it has the highest state of charge 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c).
4. The method (200) of any of the preceding claims,
in a sixth method step (206), the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest charge state are charged until they have reached the charge state of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest charge state of the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of the group associated therewith, wherein subsequently the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of the other group are charged, wherein the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109 c) of the other group are subsequently charged, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) until the electrical energy stores have reached the state of charge of the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge in the group, with the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge in the group beginning, wherein subsequently all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are charged simultaneously until the electrical energy stores have reached all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), 106b, 106c, 109a, 109b, 109 c) having the highest state of charge, in the energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c).
5. The method (200) of any of the preceding claims,
characterized in that, in a seventh method step (207), the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest charge state are charged until they have reached the charge state of the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest charge state within the group, wherein subsequently all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of the group are charged until they have reached the highest charge state of all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), 109a, 109 c) having the highest charge state, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), in this case, the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of the other group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge are then charged until they have reached the state of charge of the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the highest state of charge of all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c).
6. The method (200) of any of the preceding claims,
characterized in that, when a group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) has more than two electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), in order to charge all electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of a group, the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the smallest state of charge in the group is started and, once the electrical energy store (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge has been started, 109a, 109b, 109 c) has reached the charge state of the respective electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the higher charge state, the electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the higher charge state is charged.
7. The method (200) of any of the preceding claims,
characterized in that, in an eighth method step (208) following the fourth method step (204) or the sixth method step (206) or the seventh method step (207), all the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are charged to a maximum state of charge and/or the method for charging the electrical energy store system is ended.
8. The method (200) of any of the preceding claims,
characterized in that, if the electrical energy accumulator system has more than two groups of electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c), after the fourth method step (204) or the sixth method step (206) or the seventh method step (207), an electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the lowest state of charge at the time and an electrical energy accumulator (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) having the second highest state of charge at the time are determined and the application to the electrical energy accumulator (6 a, 6b, 6c, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) is continued in a third method step (203), 9c, 106a, 106b, 106c, 109a, 109b, 109 c).
9. An electrical energy accumulator system, wherein the electrical energy accumulator system is provided for operating by means of a method according to one of the preceding claims,
the electrical energy accumulator system is characterized by electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) which are each associated with a group of electrical energy accumulators (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c).
10. The electrical accumulator system of claim 9,
characterized in that the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) of a group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are of the same type and/or are arranged in series.
11. A vehicle (1, 101) having an electrical accumulator system according to claim 9 or 10.
12. Vehicle (1, 101) according to claim 11,
it is characterized in that the preparation method is characterized in that,
the electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 9c, 106a, 109b, 109 c) of a group of electrical energy stores (6 a, 6b, 6c, 9a, 9b, 9c, 106a, 106b, 106c, 109a, 109b, 109 c) are associated with the same transaxle (3, 7, 8, 14) and/or the same electric motor (4, 12, 15, 19) of the vehicle (1, 101).
CN202011246363.5A 2019-11-11 2020-11-10 Method for charging an electrical energy accumulator system, electrical energy accumulator system and vehicle Pending CN112776668A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019217354.3A DE102019217354A1 (en) 2019-11-11 2019-11-11 Method for charging an electrical energy storage system, electrical energy storage system and vehicle
DE102019217354.3 2019-11-11

Publications (1)

Publication Number Publication Date
CN112776668A true CN112776668A (en) 2021-05-11

Family

ID=75584216

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011246363.5A Pending CN112776668A (en) 2019-11-11 2020-11-10 Method for charging an electrical energy accumulator system, electrical energy accumulator system and vehicle

Country Status (2)

Country Link
CN (1) CN112776668A (en)
DE (1) DE102019217354A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6583602B2 (en) * 2001-05-11 2003-06-24 Denso Corporation Vehicular power supply apparatus and method of controlling the same
US8143854B2 (en) * 2007-05-11 2012-03-27 Panasonic Ev Energy Co., Ltd. Adjusting method of battery pack and adjusting method of battery pack with controller
DE102008060936A1 (en) * 2008-12-06 2010-06-10 Daimler Ag Battery unit i.e. lithium ion battery unit, operating device for e.g. electric vehicle, has switch elements assigned to battery modules of battery unit for balancing different charging conditions of battery modules
DE102009000055A1 (en) * 2009-01-07 2010-07-08 Robert Bosch Gmbh Battery cell balancing
DE102010039913A1 (en) * 2010-08-30 2012-03-01 Sb Limotive Company Ltd. A method for balancing states of charge of a battery with a plurality of battery cells and a corresponding battery management system and a battery
DE102012207674A1 (en) * 2012-05-09 2013-11-14 Robert Bosch Gmbh Method and device for adjusting the states of charge of a battery
DE102014215724A1 (en) * 2014-08-08 2016-02-11 Robert Bosch Gmbh Battery cell module with a state of charge compensation unit for performing a state of charge balance between the battery cells of the battery cell module and corresponding method
DE102017201622A1 (en) * 2017-02-01 2018-08-02 Bayerische Motoren Werke Aktiengesellschaft Method for operating an energy storage system and energy storage system

Also Published As

Publication number Publication date
DE102019217354A1 (en) 2021-05-12

Similar Documents

Publication Publication Date Title
US10756548B2 (en) Quick charging device with switching unit for individual battery module discharging
EP2874271B1 (en) Apparatus and method for controlling battery
JP6419992B2 (en) Hybrid energy storage module system
US8264196B2 (en) Charge control apparatus, battery pack, and vehicle
US20080245587A1 (en) Vehicle Hybrid Energy System
CN104044482A (en) Dual Lithium-Ion Battery System for Electric Vehicles
CN105034991B (en) Onboard power system and method for running onboard power system
EP3188342A1 (en) Smart charging system for electric vehicle battery packs
US11362524B2 (en) Battery system and a method for use in the battery system
JP2013055825A (en) Electric power unit for vehicle and vehicle having the same
US20170166078A1 (en) Battery charge equalization system
CN101816082A (en) Power supply system
JP2014103849A (en) Charging control device, and vehicle
US20220209544A1 (en) Battery system and controlling method of the same
Kim et al. A modularized BMS with an active cell balancing circuit for lithium-ion batteries in V2G system
CN103963656A (en) Storage battery system
WO2021061506A1 (en) Method and system for collocated gasoline pumps and charging stations for ultra-high speed charging
US20220242247A1 (en) Vehicle and method for operating a vehicle
CN112776668A (en) Method for charging an electrical energy accumulator system, electrical energy accumulator system and vehicle
JP2016031879A (en) Vehicle battery controller
JP2022015513A (en) Battery module
US20220006300A1 (en) Electrical energy store, device and method for operating an electrical energy store
CN112776630A (en) Vehicle and method for charging at least two electrical energy stores of a vehicle
US20240072318A1 (en) Battery preconditioning under elevated temperatures
Broussely Traction batteries. EV and HEV

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination