EP3673555A1 - Determining the charge of a battery in a charging process - Google Patents
Determining the charge of a battery in a charging processInfo
- Publication number
- EP3673555A1 EP3673555A1 EP18749835.7A EP18749835A EP3673555A1 EP 3673555 A1 EP3673555 A1 EP 3673555A1 EP 18749835 A EP18749835 A EP 18749835A EP 3673555 A1 EP3673555 A1 EP 3673555A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- charge
- accumulator
- charging device
- time
- value
- 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- Withdrawn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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3828—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
-
- 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
-
- 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
-
- 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]
-
- 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
-
- 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 present invention relates to a method for determining a charge value for a system comprising a charging device and at least one rechargeable battery, wherein the at least one rechargeable battery for receiving and storing an electrical energy can be connected to the charging device.
- the present invention relates to an accumulator and a charging device for carrying out the method. Moreover, the present invention relates to a system comprising at least one accumulator and a charging device for carrying out the method.
- Wireless machine tool can be operated for power with an accumulator, also called battery.
- the wireless machine tool can be, for example, a cordless screwdriver, a hammer drill or the like.
- Accumulators usually contain a number of memory cells or energy storage cells for electrical energy or an electrical charge.
- a modern accumulator In order to control a charging or discharging process of the memory cells, in which the memory cells are either charged with electrical energy or the electrical energy is removed from the memory cells, a modern accumulator has a controller or control electronics.
- the memory cells are also referred to as battery cells.
- Accumulators according to the state of the art frequently do not have a device for cost reasons in order to reliably and precisely display the current state of charge or the level of stored energy of the accumulator at any time.
- the most accurate possible detection of the current state of charge or the amount of energy already stored in the accumulator makes it possible to better monitor a charging process and in particular to estimate the time at which the accumulator has reached a certain state of charge.
- this measurement is only possible in a state when no electric current flows from the charging device to the accumulator.
- An automatic interruption of the charging process is possible if, for example, the accumulator and / or the charging device have become too hot during the charging process. In such a case, a charging process can only be continued with certainty once the accumulator or the charging device has cooled sufficiently again.
- the object of the present invention is therefore to provide a method for determining a charge value for a system comprising a charging device and at least one rechargeable battery, wherein the at least one rechargeable battery for receiving and storing an electrical energy can be connected to the charging device. Furthermore, it is also an object of the present invention to provide an accumulator, a machine tool and a system comprising at least one accumulator and a charging device for carrying out the method, with which the above-mentioned problem can be solved.
- the object is achieved in particular by a method for determining a charge value for a system comprising a machine tool and at least one accumulator, wherein the at least one accumulator is used to supply the machine tool with electrical energy.
- the current or actual state of charge of the accumulator can also be during the charging process of the battery Accumulator, that is, when electric current flows from the charging device to the accumulator, are reliably detected.
- the current or actual state of charge of the accumulator can also be during the charging process of the battery Accumulator, that is, when electric current flows from the charging device to the accumulator, are reliably detected.
- the first charge value of an electrical charge of the at least one rechargeable battery is stored on a non-volatile memory (NVM).
- NVM non-volatile memory
- the period between the first and second time may also be referred to as the first time interval.
- the period between the second and third time may also be referred to as the second time interval.
- an accumulator connectable to a charging device, which is configured to carry out the method.
- the accumulator may include a charge measuring device for detecting a first charge value of an electric charge in the accumulator.
- the charging device may include a current measuring device for detecting a current value of an electric current in the charging device, which flows from the charging device to the at least one rechargeable battery for recharging the rechargeable battery.
- the charging device may include a processor for determining a second charge value based on the detected current value between a first and a second time.
- the object is achieved by a system comprising at least one accumulator and a charging device for carrying out the method.
- Fig. 1 is a sectional view of a charging device according to the invention with an inventive battery connected to the charging device.
- a charging device 1 according to the invention is shown together with an accumulator 12 according to the invention.
- the rechargeable battery 12 is detachably connected to the charging device 1 for a charging operation by which the rechargeable battery 12 is charged with an electric power.
- the charging device 1 is designed, for example, in the form of a charging device and essentially contains a housing 2 and a mains power connection cable.
- the mains power connection cable is used to connect the charging device 1 to a mains power source (also called socket) in order to allow electrical current to flow from the mains power source to the charging device 1.
- the mains power source is not shown in the figure.
- the accumulator 12 may serve in an embodiment for supplying a power tool 1 with electrical energy or with electric current.
- the accumulator 12 is for this purpose separated from the loading device 1 connected to a machine tool.
- the machine tool can be, for example, a cordless screwdriver, a drill, a saw or the like. The machine tool is not shown in the figure.
- the accumulator 12 contains for this purpose substantially in its interior a number of energy storage cells 13 (also called battery cells) and a controller 14.
- the energy storage cells 13 and the controller 14 are connected to each other. With the help of the energy storage cells 13, electrical energy or an electrical charge can be stored.
- the controller 14 of the battery 12 in turn contains a charge-measuring device 15.
- the charge-measuring device 15 serves to detect a first charge value of an electrical charge which is stored in the energy storage cells 13.
- the first charge value corresponds to the available electric charge in the energy storage cells 13 at a specific time.
- the individual energy storage cells 13 are mechanically and electrically connected to the controller 14 via an upper and lower cell holder 16, 17, so that electrical energy or electric current can flow from the individual energy storage cells 13 to the controller 14.
- the charge measuring device 15 contained in the controller 14 measures the electric charge stored in the energy storage cells 13 at time intervals, ie at certain points in time. The values of the measured electric charge are stored in a non-volatile memory 30.
- a control device 18 is positioned inside the housing 2 of the charging device 1.
- the control device 18 is connected via a corresponding lines 19 to the controller 14 of the accumulator 12.
- the lines 19 serve to transmit signals, ie as a communication line, and to transmit electrical power.
- the control device 18 further includes a current measuring device 20 and a processor 21.
- the current measuring device 20 is used for detecting a current value of an electric current which flows from the charging device 1 to the individual energy storage cells 13 of the accumulator 12.
- the electric current flows from the charging device 1 to the energy storage cells 13 to charge the accumulator 12.
- electrical energy or an electrical charge is stored in the energy storage cells 13.
- the detection or measurement of the current value takes place between a first time ti and second time h for a certain period of time or for a certain time interval.
- the accumulator 12 is positioned in the direction of arrow A on the loading device 1.
- the accumulator 12 and the charging device 1 each have a mutually corresponding interface, so that the accumulator 12 and the charging device 1 are mechanically, electrically and electronically connected to one another.
- the respective interface of the accumulator 12 and the charging device 1 are not shown in the figure.
- the accumulator 12 is moved in the direction of arrow B.
- the detection or the measurement of the charge Q (ti) takes place here by means of the charge measuring device 15 in the accumulator 12.
- the value of the current electrical charge Q (ti) is stored in the memory 30. Several values of the electrical charge can also be stored systematically in the memory 30.
- the value of the actual electrical charge Q (ti) is sent via the line 19 from the controller 14 of the accumulator 12 to the control device 18 of the machine tool 1.
- the current measuring device 20 of the control device 18 detects the amount of electrical current which flows from the charging device 1 to the energy storage cells 13 in a first time interval, ie between a first time ti and second time h.
- ti to .2 time interval between a first and a second time
- the processor 21 is, by the processor 21, the electric charge as an integral of the electric current flowing for the charging of the charging device 1 to the accumulator 12, over the time interval, i. between the first time ti and the second time h.
- the condition for determining the electric charge is that the electric charge that has flowed into or through a body represents the integral of the electric current over time.
- the value of the electrical charge detected in the charging device 1 (ie, the integral of the electric current flow over time) is sent via the lines 19 from the control device 18 to the controller 14 of the accumulator 12.
- the value of the determined electrical charge is added to the detected electrical charge Q (ti), whereby the actually charged in the energy storage cells 13 electrical charge Q (t 3 ) determined at the third time t 3 is.
- the electric charge Q (ti) detected in the accumulator 12 and the charge calculated by the charging device 1 together make up the total charge Q (t 3 ).
- the determined currently available electrical charge Q (t 3 ) at time t 3 are displayed. The user of the machine tool is thus informed how much electrical energy is actually already available with the accumulator 12.
- the display device 40 it is also possible for the display device 40 to be positioned on the charging device 1 at the time t 3 for displaying the determined electrical charge Q (t 3 ) already available in the accumulator 12.
- the display of the determined electrical charge Q (t 3 ) currently available in the energy storage cells 13 is sent to an external display device at time t 3 by means of a wireless connection becomes.
- the external display device may be, for example, eyeglasses for augmented reality, a smartphone or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17187423.3A EP3447876A1 (en) | 2017-08-23 | 2017-08-23 | Determining the charge of a battery during a charging process |
PCT/EP2018/071894 WO2019038117A1 (en) | 2017-08-23 | 2018-08-13 | Determining the charge of a battery in a charging process |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3673555A1 true EP3673555A1 (en) | 2020-07-01 |
Family
ID=59699531
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17187423.3A Withdrawn EP3447876A1 (en) | 2017-08-23 | 2017-08-23 | Determining the charge of a battery during a charging process |
EP18749835.7A Withdrawn EP3673555A1 (en) | 2017-08-23 | 2018-08-13 | Determining the charge of a battery in a charging process |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17187423.3A Withdrawn EP3447876A1 (en) | 2017-08-23 | 2017-08-23 | Determining the charge of a battery during a charging process |
Country Status (5)
Country | Link |
---|---|
US (1) | US20200200830A1 (en) |
EP (2) | EP3447876A1 (en) |
JP (1) | JP2020532264A (en) |
CN (1) | CN111033932A (en) |
WO (1) | WO2019038117A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5635814A (en) * | 1995-02-16 | 1997-06-03 | International Components Corporation | Modular battery system having a pluggable charging module |
JP4186092B2 (en) * | 1999-08-18 | 2008-11-26 | ソニー株式会社 | Battery device and battery management method |
DE102008041103A1 (en) * | 2008-08-07 | 2010-02-11 | Robert Bosch Gmbh | Charge state determination for an electrical storage |
JP6207127B2 (en) * | 2012-07-12 | 2017-10-04 | 株式会社マキタ | Measuring system |
JP2016211924A (en) * | 2015-05-01 | 2016-12-15 | カルソニックカンセイ株式会社 | Charging rate calculation device for secondary battery and storage battery system |
JP6769046B2 (en) * | 2016-03-01 | 2020-10-14 | 株式会社Gsユアサ | Power storage element monitoring device, power storage element module, SOC estimation method |
KR102570265B1 (en) * | 2016-04-26 | 2023-08-24 | 삼성에스디아이 주식회사 | Battery pack |
-
2017
- 2017-08-23 EP EP17187423.3A patent/EP3447876A1/en not_active Withdrawn
-
2018
- 2018-08-13 JP JP2020511449A patent/JP2020532264A/en active Pending
- 2018-08-13 EP EP18749835.7A patent/EP3673555A1/en not_active Withdrawn
- 2018-08-13 US US16/641,162 patent/US20200200830A1/en not_active Abandoned
- 2018-08-13 CN CN201880051760.1A patent/CN111033932A/en active Pending
- 2018-08-13 WO PCT/EP2018/071894 patent/WO2019038117A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN111033932A (en) | 2020-04-17 |
EP3447876A1 (en) | 2019-02-27 |
US20200200830A1 (en) | 2020-06-25 |
JP2020532264A (en) | 2020-11-05 |
WO2019038117A1 (en) | 2019-02-28 |
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