EP3143673A1 - Système de batterie rechargeable et procédé de commande de la charge d'un système de batterie rechargeable - Google Patents

Système de batterie rechargeable et procédé de commande de la charge d'un système de batterie rechargeable

Info

Publication number
EP3143673A1
EP3143673A1 EP15723177.0A EP15723177A EP3143673A1 EP 3143673 A1 EP3143673 A1 EP 3143673A1 EP 15723177 A EP15723177 A EP 15723177A EP 3143673 A1 EP3143673 A1 EP 3143673A1
Authority
EP
European Patent Office
Prior art keywords
battery system
battery
charging
voltage
rechargeable battery
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Withdrawn
Application number
EP15723177.0A
Other languages
German (de)
English (en)
Inventor
Harald Emanuel
Thomas HOHLBEIN
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.)
Omicron Electronics GmbH
Original Assignee
Omicron Electronics 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 Omicron Electronics GmbH filed Critical Omicron Electronics GmbH
Publication of EP3143673A1 publication Critical patent/EP3143673A1/fr
Withdrawn legal-status Critical Current

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
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • 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
    • H02J7/54—Passive balancing, e.g. using resistors or parallel MOSFETs
    • 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
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • 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
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • H02J7/82—Control of state of charge [SOC]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • 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
    • G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
    • 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 rechargeable battery system for supplying electrical consumers of any kind, in particular mobile electrical consumers, and a correspondingly configured method for controlling the charging of a rechargeable battery system.
  • the present invention particularly relates to a rechargeable battery system
  • Such rechargeable battery system which is particularly simple and flexible expandable, so as to be able to provide a variable supply voltage for the respective electrical load depending on the extension of the battery system.
  • the respective battery is integrated in the consumer.
  • Some battery systems include an external rechargeable battery, in which battery systems only a single rechargeable battery can be connected simultaneously. The user must choose a certain size of battery, i. in order to achieve a longer operating time of the respective consumer, either a larger battery would have to be selected or the battery would have to be changed after a part of the operating time.
  • Rechargeable battery modules may also be interconnected by means of a communication bus to control the charging or discharging of the battery modules.
  • a communication bus to control the charging or discharging of the battery modules.
  • the individual battery modules can not communicate with each other or, for example, should not communicate for reasons of cost, there are only a few ways to implement a controller whether to charge or discharge or if there is enough power to simultaneously charge all the battery modules.
  • One known possibility is a regulation of the voltage; If too many battery modules are connected in parallel and are to be charged at the same time, the voltage of the charging source provided for charging the battery modules can be lowered so far. that the battery modules can only charge slower, thereby reducing the total power consumption or overloading the charging source.
  • An object of the present invention is to provide a rechargeable battery system which is easily and flexibly expandable while avoiding the problems described above.
  • the battery system comprises a first terminal or input terminal for receiving an input voltage, a second terminal or output terminal for outputting an output voltage, and a rechargeable battery connected between the input terminal and the output terminal.
  • a current measuring device is provided for measuring a current flowing from an electrical contact of the input terminal to an electrical contact of the output terminal, wherein a control device controls a charging of the rechargeable battery on the basis of the input voltage depending on the current measured by the measuring device.
  • the control device may include a controller, for example in the form of a microcontroller, which in dependence on the detected current determines whether a charging electronics of the battery system can be unlocked to charge the rechargeable battery.
  • the battery system is preferably capable of supplying or charging an electrical load alone, or interconnected with other identically constructed battery systems in the form of a larger battery assembly to power or charge an electrical load. Charge and supply is also possible at the same time.
  • the current measuring device may comprise a measuring resistor connected between the electrical contact of the input terminal and the electrical contact of the output terminal, wherein the control device is preferably configured such that it evaluates a voltage drop across the measuring resistor in order to control the charging of the rechargeable battery.
  • the controller is configured to cause the rechargeable battery to charge if the current measured by the current measuring device is below a threshold.
  • the battery is in particular charged as quickly as possible, while at a relatively large current flow, ie a current flow which exceeds a corresponding threshold, no charge takes place.
  • the battery is charged with a power lower than the maximum charging power, ie at a lower speed, if the measured current indicates that the charging source is not yet fully utilized, but also no longer has sufficient power reserve charging the battery at full speed, ie when the measured current is between a corresponding lower threshold and a corresponding upper threshold.
  • the rechargeable battery can be coupled to the input connection and / or the output connection via a switching device, which can be realized, for example, by switches and / or diodes, wherein the switching device is configured such that it depends on the input voltage at the input connection or the input connection ., depending on the output voltage at the output terminal selectively blocks or conducts. In this way it can be ensured that the voltage is maintained by the battery when falling below the voltage at the respective terminal.
  • the battery system may be configured such that it is irrelevant whether a supply voltage is applied to the first terminal or to the second terminal, since the battery system works in both directions, ie, both in a current flow from the first terminal to the second terminal at a current flow from the second terminal to the first terminal.
  • the battery system can have a communication connection for communication with a further battery system, a charging source which provides the input voltage for the battery system, and / or an electrical consumer to be supplied with the output voltage of the battery system, wherein the communication connection can be used in particular tell the battery system the power of the charging source or the type of charge source. If the power of the charging source is known, the controller of the battery system can control the charging of the rechargeable battery depending thereon. Alternatively or additionally, the battery system with the aid of a voltage measuring device, the respective voltage applied to the input terminal, ie the charging voltage, detect and depend on the type or the power of the charging source.
  • the battery system according to the invention can be connected in cascade with other battery systems of the same type to form a battery arrangement so that the capacity of the battery arrangement thus formed can be flexibly adapted by a user to the respective needs or consumers
  • the present invention thus provides a way to cascade a plurality of battery systems according to the invention, thereby preventing overloading of a charging source provided for charging the battery systems or the respective batteries and allowing simultaneous or sequential charging of as many battery systems as possible with full charging speed corresponds to the available charging power. In particular, no communication between the individual battery systems is required.
  • a method for controlling the charging of a rechargeable battery of a battery system which has a first connection or input connection for receiving an input voltage and a second connection or output connection for outputting an output voltage, is therefore also proposed comprising the steps of measuring a current flowing from an electrical contact of the input terminal to an electrical contact of the output terminal, and controlling the charging of the rechargeable battery based on the input voltage depending on the measured current.
  • FIG. 1 shows a battery system according to a first exemplary embodiment of the invention.
  • FIG. 2 shows a battery system according to a second exemplary embodiment of the invention.
  • FIG. 3 shows a cascade-like interconnection of several battery systems of the present invention into a larger battery system or a battery arrangement with a charging source and an electrical consumer.
  • the illustrated battery system 100 includes an input terminal having a live input pin 1 1 and a grounded input pin 12, to which input terminal is applied an input or charge voltage of a charge source or a supply voltage source (not shown).
  • a measuring resistor or shunt resistor 21 is connected, which realizes the function of a current measuring device together with a voltage measuring device 22.
  • the voltage dropping across the measuring resistor 21 is detected by the voltage measuring device 22 and evaluated by a controller 40, which can be realized, for example, by a microcontroller, in order thus to determine the current through the measuring resistor 21.
  • a rechargeable battery or a rechargeable battery which, depending on the input voltage applied to the input terminal, can be charged or not charged by means of charging electronics 31.
  • the rechargeable battery 32 is coupled via a diode 27 to the live pin 13 of the output terminal, while the charging electronics 31 is coupled via a controllable switch 25 to the live pin 1 1 of the input terminal.
  • the switch 25 and the diode 27 are merely exemplary of the function of a corresponding switching device which selectively blocks or conducts.
  • both components 25, 27 can be realized by controllable switches or diodes or by other similarly acting components.
  • the controllable switch 25 is used in particular for switching on the charging electronics, while the diode 27 is used to supply the load to be coupled to the output terminal.
  • the operation of the illustrated battery system 100 is as follows.
  • the controller 40 determines depending on the measured current through the measuring resistor 21, whether the charging electronics 31 can be unlocked by closing the switch 25 to charge the battery 32.
  • the controller 40 controls the charging electronics 31 so that the battery 32 is charged.
  • the battery is charged as fast as possible in this case.
  • a relatively low current flow in this sense means a threshold value at which the power of the respective charging source is sufficient to charge the battery 32 of the battery system 100 in addition to the electrical power that flows through the battery system 10. If a current flows through the measuring resistor 21, which is not consumed by the battery system 100 itself, the controller 40 assumes that either an electrical consumer is connected to the output terminal or at least one further battery system is connected downstream, which is also charged.
  • the controller 40 deactivates the charging electronics 31 by opening the switch 25 when the current through the sensing resistor 21 reaches or exceeds an upper threshold.
  • This threshold may differ from the former threshold, but in principle it is also conceivable to work with only one threshold.
  • the two mentioned thresholds are different, wherein at a current through the measuring resistor 21, which is between the two thresholds, the controller 40, the charging electronics 31 controls such that the battery 32 with a lower power or at a lower speed than that maximum possible power or speed is loaded. This means that the charging electronics 31 is driven to charge the battery 32 with less power than the maximum charging power when the power is in a range in which the charging source is not fully utilized, but also not enough power reserve is available, to charge the battery 32 at full speed,
  • the battery 32 may be connected by means of a controllable switching device or diode with at least one pin of a terminal, that when the voltage falls below the voltage at the respective pin, the voltage is held by the battery 32. Thus, if no charge voltage more, the voltage is maintained by the battery 32 on.
  • a controllable switching device or diode with at least one pin of a terminal, that when the voltage falls below the voltage at the respective pin, the voltage is held by the battery 32.
  • the diode 27 is shown for the live pin or contact 13 of the output terminal.
  • a corresponding switching device or diode can also be provided for the other pins or for the input connection.
  • FIG. 2 shows an alternative embodiment of the battery system 100, in which the function of the diode 27 is taken over by a controllable switch 26, wherein the switch 26 is selectively closed or opened depending on the voltage applied to the output terminal.
  • the battery system 100 may additionally be equipped with at least one communication pin 15 or a communication port.
  • the current flow is detected by the measuring resistor 21 and determined in dependence on the measured current flow, whether the charging electronics 31 can be unlocked to charge the battery 32.
  • the controller 40 of the battery system 100 must be aware of what power the charging source has available. If the type of charging source is always the same, the charging power of the controller 40 is known. If the charging power is not known, however, the type of charging source or the corresponding charging power of the controller 40 can be communicated via such a communication port.
  • the communication port 15 can be used for communication of the Bartels s riesystems 100 with other battery systems, with the charging source or with the respectively connected electrical consumers.
  • a voltage measuring device 23 is also provided.
  • the controller 40 which detects the voltage applied to the input terminal 11, 12 charging or input voltage and forwards to the controller 40. If the input voltage is below a certain threshold (for example of the order of 20V), the controller 40 assumes that a particular type of charge source with a given charging power (for example of the order of 24W) is present while exceeding the threshold other charging source type with a correspondingly higher charging power (for example of the order of 75W) is assumed. Depending on the respectively assumed charging power, the charging electronics 31 are controlled accordingly by the controller 40.
  • a certain threshold for example of the order of 20V
  • the controller 40 assumes that a particular type of charge source with a given charging power (for example of the order of 24W) is present while exceeding the threshold other charging source type with a correspondingly higher charging power (for example of the order of 75W) is assumed.
  • the charging electronics 31 are controlled accordingly by the controller 40.
  • FIG. 3 shows by way of example a cascade-like connection of a plurality of battery systems 100, 200, 300 according to the invention in order to realize a battery arrangement with a desired capacity.
  • the first battery system 100 is connected on the input side to a charging source 1 designed, for example, as a charger, while the output terminal of the first battery system 100 is connected to the input terminal of the second battery system 200.
  • the output terminal of the second battery system 200 is in turn connected to the input terminal of the third battery system 300, which on the output side supplies an electrical load 2 with a desired supply voltage.
  • the voltage provided by the charging source 1 is passed through the three battery systems 100, 200 and 300 and arrives at the consumer 2.
  • the voltage drop through the measuring resistors 21 is very small.
  • Each battery system 100, 200 and 300 monitors the current through its measuring resistor 21. If, for example, the charging source 1 delivered a maximum charging power of 200W, the consumer 2 would require only 50W of power, and each battery system could charge its battery 32 with a maximum of 100W, then the consumer 2 would receive a power of 50W.
  • the last battery system 300 would recognize, by means of its measuring resistor 21 and its voltage measuring device 23, that a power of 50W would be passed through the battery system, and would switch on the charging electronics 31 at full power with a corresponding state of charge of its battery 32.
  • a power of 200 W would be measured in the battery system 200 by means of its measuring resistor 21 and its voltage measuring device 23.
  • the charging electronics 31 would now at half power or - if the charging electronics 31 is not able - not charged. Only when the battery system 300 has fully charged its own battery 32 would the battery system 200 be able to charge at full power.
  • the battery system 100 could accordingly charge later at full power, namely only when the bat- 32 of the battery systems 200 and 300 are fully charged.
  • the chain is loaded, so to speak, from back to front.
  • No charging source 1 could also be connected, and all battery systems 100-300 could only supply one or more consumers 2.
  • the battery system with the strongest battery 32 would contribute the most to the supply. If the batteries 32 were the same, the last battery system 300 in the chain would contribute slightly more than the front battery systems 100, 200 for supplying the load 2 due to the voltage drops across the measuring resistors 21.
  • the battery system described above works in both directions.
  • the plugs of the terminals 1 1, 12 and 13, 14 may be made identical, and to both terminals, both a charging source and an electrical load can be connected.
  • the controller 40 may consider the amount of current through the sense resistor 21 and take it into account when calculating the power. If a charging source 1 is connected, for example, to the terminal 11, 12, the current of the charging electronics 31 consumed by the battery system 100 does not flow through the measuring resistor 21, but if the charging source 1 were connected to the terminal 13, 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un système de batterie (100) rechargeable avec lequel la puissance peut être prise en considération pour estimer quand une batterie rechargeable (32) du système de batterie (100) peut être chargée et quand elle ne peut pas l'être. Plusieurs systèmes de batterie (100) de ce type peuvent être combinés de préférence en cascade.
EP15723177.0A 2014-05-16 2015-05-05 Système de batterie rechargeable et procédé de commande de la charge d'un système de batterie rechargeable Withdrawn EP3143673A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50348/2014A AT515676B1 (de) 2014-05-16 2014-05-16 Wiederaufladbares Batteriesystem und Verfahren zum Steuern des Aufladens eines wiederaufladbaren Batteriesystems
PCT/EP2015/059790 WO2015173061A1 (fr) 2014-05-16 2015-05-05 Système de batterie rechargeable et procédé de commande de la charge d'un système de batterie rechargeable

Publications (1)

Publication Number Publication Date
EP3143673A1 true EP3143673A1 (fr) 2017-03-22

Family

ID=53189019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15723177.0A Withdrawn EP3143673A1 (fr) 2014-05-16 2015-05-05 Système de batterie rechargeable et procédé de commande de la charge d'un système de batterie rechargeable

Country Status (3)

Country Link
EP (1) EP3143673A1 (fr)
AT (1) AT515676B1 (fr)
WO (1) WO2015173061A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4593239A1 (fr) * 2024-01-26 2025-07-30 Nanjing Chervon Industry Co., Ltd. Système de charge

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US3493837A (en) * 1966-10-03 1970-02-03 Trw Inc Battery charge control system
US4346336A (en) * 1980-11-17 1982-08-24 Frezzolini Electronics, Inc. Battery control system
JPH09140065A (ja) * 1995-11-10 1997-05-27 Sony Corp 並列使用の２次電池装置
US5754027A (en) * 1996-07-08 1998-05-19 Motorola, Inc. Battery pack and associated charging system
US6850037B2 (en) * 1997-11-03 2005-02-01 Midtronics, Inc. In-vehicle battery monitor
US8350529B2 (en) * 2006-11-10 2013-01-08 Lithium Balance A/S Battery management system
JP5174421B2 (ja) * 2007-10-19 2013-04-03 パナソニック株式会社 電池パック、及び電池システム
JP5453184B2 (ja) * 2010-06-28 2014-03-26 日立ビークルエナジー株式会社 電池制御回路
CN201750190U (zh) * 2010-08-24 2011-02-16 扬州飞驰动力科技有限公司 动力电池组的供电防浪涌预去载装置
PT2509185E (pt) * 2011-04-08 2013-12-11 Super B B V Circuito de balanço para baterias recarregáveis
US9166419B2 (en) * 2011-10-31 2015-10-20 Robert Bosch Gmbh Intelligent charging and discharging system for parallel configuration of series cells with semiconductor switching

Also Published As

Publication number Publication date
AT515676A4 (de) 2015-11-15
WO2015173061A1 (fr) 2015-11-19
AT515676B1 (de) 2015-11-15

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