EP4049334A1 - Charge ou décharge de modules de batterie - Google Patents
Charge ou décharge de modules de batterieInfo
- Publication number
- EP4049334A1 EP4049334A1 EP19798523.7A EP19798523A EP4049334A1 EP 4049334 A1 EP4049334 A1 EP 4049334A1 EP 19798523 A EP19798523 A EP 19798523A EP 4049334 A1 EP4049334 A1 EP 4049334A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- module
- battery
- battery modules
- voltage
- data bus
- 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.)
- Withdrawn
Links
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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- 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
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
- H02J7/52—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially for charge balancing, e.g. equalisation of charge between batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/751—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
Definitions
- the invention relates to a method for controlling the discharge and an analog method for controlling the charging of a group of one or more battery modules that can be connected in parallel, the module voltages of the battery modules being determined.
- the invention further relates to a battery module for use in a group of at least two battery modules that can be interconnected in parallel, the battery module having at least one power connection and a battery unit connected to it via a switch, the battery module also having a voltage measuring device for measuring the voltage of the battery unit, as well as a group with at least two such battery modules.
- the invention also relates to a corresponding consumer module for connection to a group of one or more battery modules that can be connected in parallel, the consumer module having power connections and an electrical load connected to it, as well as a corresponding charger for connection to a group of one or more parallel connection interconnectable battery modules, the charger having power connections and an electrical voltage source connected thereto.
- Such a battery made up of several battery modules in the form of cell strings connected in parallel is known from DE 102012 205 244 A1.
- the voltage of the entire battery unit, ie across all cell strings, is monitored and, for example, a charging current is interrupted in the event of an overvoltage, or Undervoltage a current flow to the consumer is interrupted. In these situations, the entire battery unit is de-energized.
- DE 102012 205 244 A1 discloses a monitoring of the voltage of individual cell strings for the detection of malfunctions. An individual connection of the cell strings depending on the respective string voltage is not shown.
- US 2012/0268057 A1 discloses a method for controlling the discharge or charge of the individual battery cells within a cell string of battery cells connected in series.
- the voltages of the individual battery cells are measured and, during charging, the battery cell with the highest voltage is connected in parallel with an additional compensation cell in order to reduce the charging current and thus the charging speed of the battery cell in question.
- the highest cell voltage reaches an upper limit value
- the entire cell string is switched off and the charging current is interrupted.
- the battery cell with the lowest voltage is connected in parallel with that with the additional compensation cell, in order to reduce the discharge speed of the battery cell in question.
- the lowest limit reaches a lower limit for relaxation, the entire cell string is switched off again and disconnected from the electrical load.
- a cell string level control i. H. based on the individual strand tension is not disclosed.
- the invention provides a method for controlling the discharge of the type mentioned at the outset, a highest module voltage being determined from the determined module voltages and only those battery modules being interconnected whose module voltage is less than a predetermined one
- the activation difference deviates from the highest module voltage.
- the activation difference can be a predetermined absolute value of a voltage difference or a relative, eg value related to the determined module voltages or the highest module voltages.
- the disclosed method can also be used with just one battery module. The method naturally only influences the sequence of discharge from at least two battery modules, which is why the method relates in particular to the control of the discharge of a group of at least two battery modules that can be connected in parallel. Due to the fact that only battery modules with a voltage difference smaller than the activation difference are connected together, the equalizing current between the battery modules is limited according to this voltage difference and proportional to the internal resistance of the battery modules.
- the individual battery modules When discharging, starting with the battery module with the highest module voltage, the individual battery modules are gradually switched on as soon as the already active (interconnected) battery modules have reached their individual module voltages, so that at the end of the discharge all battery modules have essentially the same module voltages and are interconnected .
- the module voltages and, on this basis, the interconnected battery modules can be re-determined at regular intervals.
- the battery modules can independently report their module voltages to a group controller at regular intervals, which then determines the interconnected battery modules and controls them accordingly (i.e. controls the battery modules depending on the module voltage to connect to or disconnect from an electrical consumer).
- a group control could query the module voltages at regular intervals and, once all the responses have been received, determine the interconnected battery modules and control them accordingly.
- the predefined activation difference can be less than 1%, in particular less than 0.5%, of the nominal voltage of a battery module.
- the specified activation difference must be an absolute value of 0.1 V. This corresponds to about 0.3% of the nominal voltage and is therefore within the range given above for the activation difference. Accordingly, an absolute value of 0.3 V with the same nominal voltage would also be within this range.
- the activation difference can alternatively also be specified as a relative value, for example 0.2% of the highest module voltage. The activation difference can therefore optionally be dependent on the state of charge of the battery modules.
- the invention provides a method for controlling the charge of the type mentioned at the beginning, a lowest module voltage being determined from the module voltages determined and only those battery modules being connected whose module voltage is less than a specified activation difference deviates from the lowest module voltage.
- the module voltages and, on this basis, the interconnected battery modules can also be determined anew at regular intervals in connection with the method for controlling the charge.
- the specified activation difference can be less than 1%, in particular less than 0.5%, of the nominal voltage of a battery module.
- an output power of the group can be dynamically limited as a function of the interconnected battery modules. It can thereby be achieved that the individual battery modules do not exceed a predetermined maximum discharge current.
- the limitation can, for example, as a dynamic power regulation of a consumer, for example a Electric motor, be provided.
- a controller can check how many battery modules with the same maximum discharge current are connected and connected in parallel and regulate a maximum provided output power as a function of this. For example, with two interconnected (active) battery modules, a motor output of 1000 W, for example, can be made available. As soon as a third battery module is switched on, the motor power made available can be reduced to 1500 W, for example.
- the maximum engine power provided can be reduced to 500 W, for example. If the battery modules have different maximum discharge currents, the controller can query the respective maximum discharge currents via the data bus and adjust the limitation of the output power accordingly.
- the described dynamic limitation can on the one hand protect the cells of the battery modules and at the same time provide a maximum output power.
- a charge current of the group can optionally be dynamically adapted as a function of the interconnected battery modules. This means that the entire group can be loaded as quickly as possible.
- the invention provides that the battery module has a module controller connected to the voltage measuring device and the switch, the module controller having at least one data bus connection and being set up, when connected to a data bus, one of the
- the battery module can thus be set up to participate in one of the methods described above. Any type of data transmission between the module controller and a group controller can form the data bus. Especially this data transfer is not restricted to certain physical media.
- the data bus is not limited to a single line or frequency, for example, the transmission of the module voltage and the transmission of the control command could take place on different lines or frequencies, which in this case would be understood as a data bus.
- the battery unit has at least one lithium-ion cell.
- This battery technology is prone to heating in the event of significant equalizing currents between multiple battery modules.
- the invention therefore achieves an additional safety effect of avoiding excessive heating of the battery modules or of limiting the heating of the battery modules during operation. This is particularly true with regard to the fact that battery modules can be combined in very different landing states.
- the data bus can be a serial data bus, in particular in accordance with RS-485 or CAN bus.
- a serial data bus is that the group of battery modules can be easily and flexibly expanded and configured.
- the sequence of the battery modules can be selected or changed as required without making changes to the data bus.
- the battery module can have at least one mechanical coupling for connection to a further battery module, a power connection and a data bus connection being arranged in such a way that a further battery module connected via the mechanical coupling takes part in the same data bus and the two battery modules can be connected in parallel .
- a screw lock or a bayonet lock or a connection with snap or hook elements can be provided.
- the battery module can have at least two mechanical clutches, so that the group by one Stringing together or chaining several (for example three or more) battery modules can be formed.
- the mechanical coupling can, for example, have a thread. More precisely, for example, an external thread can be provided on one side of the battery module and a rotatable screw ring with an internal thread can be provided on an opposite side of the battery module. In this way, several battery modules can be screwed together.
- the battery module can be suitable for use under water.
- the battery module can have a housing that is watertight to a defined depth and in which the battery unit is accommodated. Any mechanical coupling can enable a corresponding watertight connection between adjacent battery modules and can, for example, be equipped with a corresponding seal.
- the at least one power connection and / or the at least one data bus connection can / can have spring-loaded electrical contacts.
- the contacts can be designed to be splash-proof, for example.
- the contacts can be set up in such a way that an electrical contact can only be made when there is a mechanical connection to an adjacent battery module, while otherwise the electrical contacts are shielded in a watertight manner.
- the battery unit can have an energy content of a maximum of 100 Wh.
- a lower energy content enables relatively safe transport, for example in an airplane.
- the battery module can optionally have a carrying device, in particular a handle.
- the individual battery modules can thus be transported comfortably and safely.
- a housing of the battery module can be made of metal, for example be made, in particular of aluminum.
- the housing can alternatively or additionally be made of plastic.
- the invention also provides a group of the type mentioned at the outset, the individual battery modules being designed according to one of the above variants.
- the invention provides a consumer module of the type mentioned at the outset, the consumer module having a group control with a data bus connection, the group control being set up to receive module voltages determined from connected battery modules when connected to a data bus and to determine a highest module voltage from the received module voltages and to only send a control command for parallel connection to those battery modules whose module voltage deviates from the highest module voltage by less than a specified activation difference.
- the consumer module can for example have a motor, for example for locomotion, in particular under water (e.g. for a diving scooter).
- the consumer module will have an electrical consumer or be connected to an electrical consumer which, as an electrical load, can be supplied with electrical energy by one or more of the battery modules of the group.
- the group control controls which battery modules are interconnected and connected to the electrical load at which point in time and are thus discharged.
- the group control of the consumer module can also be set up to dynamically limit an output power of a connected group of battery modules as a function of the interconnected battery modules.
- the invention provides a charger of the type mentioned at the outset, the charger has a group control with a data bus connection, the group control being set up to receive module voltages determined from connected battery modules when connected to a data bus, to determine a lowest module voltage from the received module voltages and only to those battery modules whose module voltage is less than a predetermined activation difference of deviates from the lowest module voltage, send a control command for parallel connection.
- the group control controls which battery modules are interconnected at which point in time and are connected to the electrical voltage source of the charger and are thus charged.
- the group control of the charger can also be set up to dynamically adapt a charging current for a connected group of battery modules as a function of the interconnected battery modules.
- FIG. 1 schematically shows a block diagram with a group of two battery modules and a consumer module connected thereto;
- FIG. 2 schematically shows a diagrammatic view of a battery module looking towards a front side
- FIG. 3 schematically shows a diagrammatic view of the battery module according to FIG. 2, looking towards a rear side;
- FIG. 5 schematically shows a sequence diagram to illustrate a method for controlling the discharge of a group of three Battery modules.
- each battery module 2, 3 has a switch 5, 6. When the switches 5, 6 are closed, the battery modules 2, 3 are connected together in parallel.
- Each battery module 2, 3 has two power connections 7, 8, each with two electrical contacts 9, 10, 11, 12.
- a battery unit 13 is connected to each of the power connections 7, 8 via the respective switch 5, 6.
- the battery units 13 each have a plurality of lithium-ion cells. Overall, each battery unit 13 has a certain maximum energy content, e.g. about 100 Wh.
- the battery modules 2, 3 have a voltage measuring device 14 for measuring the voltage of the battery unit 13. With the voltage measuring device 13 and the switch 5, 6, more precisely one
- a module controller 16 is connected to each driver 15 for the switches 5, 6.
- the module controller 16 has a data bus connection 17.
- the module controller 16 is set up, when connected to a data bus 18, to provide a voltage determined by the voltage measuring device 14 on the data bus 18 and, in response to a control command received on the data bus 18, the switch 5, 6 of the relevant
- Battery module 2, 3 to open (or close).
- each of the battery modules 2, 3 has an LED display 22 with a row of LEDs 23.
- the consumer module 4 is connected to the group of battery modules 2, 3. It has a power connection 24 with two electrical contacts 25, 26 and an electrical load connected therewith in the form of an electric motor 27.
- the consumer module 4 has a group controller 28 connected to the data bus 18 with a data bus connection 29.
- the group control 28 is set up to receive module voltages determined from the connected battery modules 2, 3, to determine a highest module voltage from the received module voltages and only to those battery modules 2, 3 whose module voltage is less than a predetermined one
- the group control 28 is connected to a charge level monitor 30.
- the consumer module 4 has a
- Motor control unit 31 for regulating the direction and speed of rotation of the electric motor 27.
- FIGS. 2 to 4 schematically show an exemplary mechanical configuration of a single battery module 2 (FIGS. 2 and 3) or two battery modules 2, 3 (FIG. 4) for use under water.
- the battery module 2 has a mechanical coupling 34, 35 for connection to a further battery module 3 both on a front side 32 and on a rear side 33.
- the power connection 7 and the data bus connection 17 are arranged such that a further battery module 3 connected via the mechanical coupling 34, 35 takes part in the same data bus 18 and the two battery modules 2, 3 can be connected in parallel (as in FIG. 1). Both mechanical couplings 34, 35 each have a thread.
- the data bus connections 17 have spring-loaded electrical contacts.
- the housing 36 of the battery module 2 can be made of aluminum, for example.
- a Carrying device in the form of a folding handle bracket 37 is provided.
- the sequence diagram shown in FIG. 5 illustrates the communication between the consumer module 4 and the battery modules 2, 3, 38.
- the messages shown in the sequence diagram are exchanged via the data bus 18.
- the consumer module 4, more precisely the group control 28, sends a query 39 via the data bus 18 for connected battery modules after the consumer module 4 has been activated.
- the first battery module 2, which receives the query 39, sends a response 40.
- the response 40 includes the serial number (for example "100") and the current module voltage (for example "33.820 V") of the battery module 2.
- the sends Group control 28 another query 41.
- the first battery module 2 does not respond again because of the feedback 40 that has already been sent.
- the query 41 then arrives at the second battery module 3, which then sends a second feedback 42 to the group controller 28.
- the second feedback 42 contains the serial number (e.g. "200") and the current module voltage (e.g. "33.820 V") of the second battery module 3.
- the group control sends a third query 43, which is sent by the third battery module 38 with its serial number (e.g. "n") and module voltage (e.g. "33.430 V") is answered (feedback 44).
- the group control compares the module voltages received and determines the highest module voltage (here, for example, "33.820 V”). On this basis, those battery modules are activated whose module voltage is within an activation difference of, for example, 0.1 V, ie in a voltage range from 33.720 V to 33.820 V.
- control commands 45, 46 are sent to the first and second battery modules 2, 3 in order to connect these battery modules 2, 3 together activated battery modules 2, 3 then send activation confirmations 47, 48 back to the group controller 28.
- the following part of the sequence diagram shows an alternative sequence for a later point in time in which only one query 49 is sent by the group controller 28, which query reaches all of the battery modules 2, 3, 38.
- Each of the battery modules 2, 3, 38 then sends a feedback 50, 51, 52 with its serial number and module voltage back to the group control 28.
- the module voltage of the first and second battery modules has dropped to 33.430 V, for example.
- the module voltage of the third battery module 38 is now within the activation difference and the third battery module 38 is therefore activated by the group controller 28 by means of a control command 53. After its activation, it sends a confirmation 54 back to the group control 28.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/AT2019/060353 WO2021077143A1 (fr) | 2019-10-24 | 2019-10-24 | Charge ou décharge de modules de batterie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4049334A1 true EP4049334A1 (fr) | 2022-08-31 |
Family
ID=68470208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19798523.7A Withdrawn EP4049334A1 (fr) | 2019-10-24 | 2019-10-24 | Charge ou décharge de modules de batterie |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20230055483A1 (fr) |
| EP (1) | EP4049334A1 (fr) |
| WO (1) | WO2021077143A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU101735B1 (de) * | 2020-04-15 | 2021-10-15 | Betteries Amps Gmbh | Verfahren zum Betreiben einer Vorrichtung zum Zuführen oder Abführen von elektrischer Energie |
| CN118748310B (zh) * | 2024-06-26 | 2025-08-26 | 威海天特智能科技有限公司 | 电池接口装置、插接式电池设备及其组合与管理方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004045897A1 (de) * | 2004-09-22 | 2006-03-30 | Howaldtswerke-Deutsche Werft Gmbh | Batterieanlage eines Unterseebootes |
| DE102008060936A1 (de) * | 2008-12-06 | 2010-06-10 | Daimler Ag | Vorrichtung und Verfahren zum Betreiben einer Batterieeinheit eines Kraftfahrzeugs |
| CN102185159B (zh) | 2011-04-19 | 2013-08-14 | 吴粤滨 | 基本单元锂电池组模块、多级锂电池组及充放电均衡方法 |
| DE102012205244A1 (de) | 2012-03-30 | 2013-10-02 | Aat Alber Antriebstechnik Gmbh | Schaltungsanordnung |
| DE102018004891A1 (de) * | 2018-06-20 | 2019-01-24 | Daimler Ag | Verfahren und Vorrichtung für einen Spannungsausgleich in einem Bordnetz eines elektrisch betriebenen Fahrzeugs |
-
2019
- 2019-10-24 WO PCT/AT2019/060353 patent/WO2021077143A1/fr not_active Ceased
- 2019-10-24 EP EP19798523.7A patent/EP4049334A1/fr not_active Withdrawn
- 2019-10-24 US US17/755,160 patent/US20230055483A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021077143A1 (fr) | 2021-04-29 |
| US20230055483A1 (en) | 2023-02-23 |
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