[go: up one dir, main page]

WO2008151643A1 - Appareil de chargement de batterie et procédé de chargement d'une batterie - Google Patents

Appareil de chargement de batterie et procédé de chargement d'une batterie Download PDF

Info

Publication number
WO2008151643A1
WO2008151643A1 PCT/EP2007/005170 EP2007005170W WO2008151643A1 WO 2008151643 A1 WO2008151643 A1 WO 2008151643A1 EP 2007005170 W EP2007005170 W EP 2007005170W WO 2008151643 A1 WO2008151643 A1 WO 2008151643A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
electronic device
portable electronic
circuitry
regulating
Prior art date
Application number
PCT/EP2007/005170
Other languages
English (en)
Inventor
Markus Aaltonen
Jere Antilla
Original Assignee
Nokia Corporation
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 Nokia Corporation filed Critical Nokia Corporation
Priority to PCT/EP2007/005170 priority Critical patent/WO2008151643A1/fr
Publication of WO2008151643A1 publication Critical patent/WO2008151643A1/fr

Links

Classifications

    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply

Definitions

  • the present invention relates to apparatus for batter)' charging of a portable electronic device, and to a device for charging such a battery, and to a method of charging such a batter)'.
  • Batter Batter' capacity is often abbreviated as the letter C, and references are made for example to 1/20 C or C/20.
  • a 600 mAh battery will give 600mA for one hour, 60 mA for 10 hours, or 6mA for 100 hours. In practice, at high currents, the rated capacity is never quite reached; at low currents, it is exceeded.
  • a rate of 1/10 C means a charging current of one tenth of the battery stated capacity.
  • a trickle charge at 1/10 C is usually safe for any battery.
  • a preferred method of charging both NiCd and NiMH batteries is the so called delta-V (change in voltage) method.
  • the terminal voltage of the cell during a charge with a constant current continues to rise slowly as charging progresses. At the point of full charge, the cell voltage drops in a short time. The amount of drop is small, about 10 mV/cell for NiCd (lower for NiMH), but is distinctive. Delta charging is nearly always allied with temperature measurement as a backup.
  • an initial charge rate of 1 C is used and. when the fully charged state has been reached, a maintenance charge of 1/30 to 1/50 C is used to maintain the battery.
  • Another approach is to measure the cell temperature.
  • the cell temperature will rise steeply as full charge is reached. When the cell temperature rises to 10° C or so above ambient, it will stop charging, or go into trickle mode.
  • One particular problem with many phones is that, when used in cars, the amount of noise and interference on the car supply can defeat or mask the delta V detection and phones are more prone to operating on temperature limiting. While this has no significant effect in occasional use. it can lead to a loss of battery life in vehicles when the phone is permanently connected (e.g. a car kit) and a lot of stop/start motoring takes place. Each time the ignition is turned off for a few minutes and then turned back on, a new charge sequence is initiated.
  • the term "portable electronic device” is used to indicate any electrical or electronic device or unit which is suitable for carrying by a human, and for example includes a mobile communication device or smart mobile phone, a personal digital assistant unit or laptop/tablet PC, a personal music player or mp3 player or digital/analogue radio, a games or other entertainment unit, a navigation device for example a satellite navigation unit, or a data storage unit.
  • An object of the present invention may be to provide apparatus for charging a portable electronic device which may overcome any one or more of the problems referred to herein.
  • Another object of the present invention may be to provide apparatus for charging a portable device at a predetermined magnitude.
  • apparatus for charging a portable electronic device comprising circuitry for dynamically regulating the current from a charger to the portable electronic device so that the current to the battery of the portable electronic device is at a magnitude independent of the current drawn by other operations of the portable electronic device.
  • the apparatus may allow for charging of the batter ⁇ ' at a consistent magnitude, advantageously at an optimum level, regardless of other operations of the portable electronic device. Moreover the charging can be maintained at a high level without risk of intermittent excessive charge levels.
  • the apparatus may include any one or more of the following features:
  • circuitry for regulating is operable to provide a predetermined magnitude current being input to the battery of the portable electronic device
  • the circuitry for regulating comprises circuitry for determining the current drawn by said other operations to provide control of the current from the charger to the portable electronic device;
  • the circuitry for determining the drawn current comprises circuitry to measure the current consumption at all said other operations of the portable electronic device, and circuitry for summing the current measurements derived from the circuitry to measure the current consumption;
  • the circuitry for regulating comprises circuitry for adding to combine the output of said circuitry for summing with the batter)' current input, to derive the charger current to the portable electronic device;
  • circuitry for determining the current drawn is operable such that the current drawn by said other operations are measured over a predetermined time period and/or at predetermined time intervals;
  • circuitry for determining the current drawn is operable such that the measurements are substantially instantaneous and/or continual;
  • circuit ⁇ for sensing the current to the batter ⁇ ' of the portable electronic device for input to the circuitry for regulating
  • the circuitry for sensing comprises a current-sensing resistor in series with the battery; • circuitry to measure voltage drop across the current-sensing resistor for input to the circuitry for regulating;
  • circuitry for current sensing is operable such that the current measurements are made over a predetermined time period and/or at predetermined time intervals; • the circuitry for current sensing is operable such that the measurements are substantially instantaneous and/or continual.
  • a device for charging a portable electronic device comprising apparatus of the first aspect.
  • a method of charging a portable electronic device comprising dynamically regulating the current from a charger to the portable electronic device so that the current being input to the battery of the portable electronic device is at a magnitude independent of the current drawn by other operations of the portable electronic device.
  • the method may include any one or more of the following features:
  • the regulating inputs a predetermined magnitude current to the batter)' of the portable electronic device; • the regulating comprises determining current drawn by said other operations for control of the current from the charger to the portable electronic device;
  • the determining comprises measuring the current consumption at all said other operations of the portable electronic device, and summing the current measurements derived from the measuring;
  • the regulating comprises combining the output of said summing with the battery current input for derivation of the charger current to the portable electronic device;
  • the current determining comprises measuring the current drawn by said other operations over a predetermined time period and/or at predetermined time intervals;
  • the sensing comprises measuring the voltage drop across a current- sensing resistor in series with the batter ⁇ ' for input to the circuitry for regulating;
  • the current sensing makes the current measurements over a predetermined time period and/or at predetermined time intervals; • the current sensing makes the measurements substantially instantaneous and/or continual.
  • an apparatus for charging a portable electronic device comprising means for dynamically regulating the current from a charger to the portable electronic device so that the current being input to the battery of the portable electronic device is at a magnitude independent of the current drawn by other operations of the portable electronic device.
  • a computer program e.g. stored on a memory
  • the computer program comprising computer code for dynamically regulating the current from a charger to the portable electronic device so that the current being input to the battery of the portable electronic device is at a magnitude independent of the current drawn by other operations of the portable electronic device.
  • the charger regulating function may be located within the charger unit, or within the portable electronic device, or separately, or elsewhere, as appropriate.
  • Any circuitry may include one or more processors, memories, and bus lines. One or more of the circuitries may share circuitry elements.
  • the present invention includes one or more aspects, embodiments and/or features of said aspects and/or embodiments in isolation and/or in various combinations whether or nor specifically stated (including claimed) in that combination or in isolation.
  • Corresponding means for performing one or more of the disclosed functions are also within the present disclosure.
  • charging of the battery may be set at an optimum rate allowing efficient, fast affective charging
  • charging of the battery may be maintained at or near a maximum rate without risk of exceeding the maximum rate upon variation of other operations of the portable electronic device.
  • FIG. 1 is a block schematic drawing of one embodiment of an apparatus embodying the present invention
  • Figure 2 is a block schematic drawing of a second embodiment of the present invention.
  • FIG 1 there is shown a mobile phone charger 1 , plugged into a mobile phone 2. by way of a USB terminal 3 at the mobile phone 2.
  • Mobile phone 2 has a number of internal functionality block circuits, these including:
  • Charger 1 has a supply unit 10 connected in series to a dynamic control unit 11 which regulates the current output of the charger 1.
  • Control unit 11 operates by determining the instantaneous current consumption Ij to I 7 at each of the circuits 5 to 7, summing them and then adding the required battery charging current I 4 , which typically in the beneficial mode is 1C being the maximum permitted charging current, in order to result in the total current I ⁇ N from supply circuit 10.
  • FIG. 2 there is shown a second embodiment in which charger 21 is plugged into a USB terminal 22 (acting as a USB charging connector) of mobile phone 23.
  • control unit 28 Between USB terminal 22 and the individual functionality circuits of the mobile phone 23 (being battery circuit 24, RF circuit 25, LED circuit 26. video circuit 27) is control unit 28.
  • a current sensing resistor 29 is located in series connection with the batter ⁇ 7 unit 30 of battery circuit 24. allowing the voltage drop across resistor 29 to be continuously monitored by the generation of a signal which is input to control unit 28 for dynamic regulation of the current I JN being input to mobile phone 23 from charger 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Le chargeur (1) est branché sur un téléphone mobile (2) à l'aide d'une borne USB (3). Le chargeur (1) possède une unité de commande dynamique (11) permettant de réguler le courant délivré afin de fournir un courant de charge optimum au circuit de la batterie (4) pour n'importe quel courant tiré d'autres circuits fonctionnels du téléphone mobile (2). L'unité de commande dynamique détermine la consommation de courant dans les circuits de fonctionnalité (5) à (7), en les additionnant avec le courant de charge requis pour la batterie.
PCT/EP2007/005170 2007-06-12 2007-06-12 Appareil de chargement de batterie et procédé de chargement d'une batterie WO2008151643A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/005170 WO2008151643A1 (fr) 2007-06-12 2007-06-12 Appareil de chargement de batterie et procédé de chargement d'une batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/005170 WO2008151643A1 (fr) 2007-06-12 2007-06-12 Appareil de chargement de batterie et procédé de chargement d'une batterie

Publications (1)

Publication Number Publication Date
WO2008151643A1 true WO2008151643A1 (fr) 2008-12-18

Family

ID=39165421

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/005170 WO2008151643A1 (fr) 2007-06-12 2007-06-12 Appareil de chargement de batterie et procédé de chargement d'une batterie

Country Status (1)

Country Link
WO (1) WO2008151643A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019508A1 (fr) * 1992-03-18 1993-09-30 Grid Systems Corporation Systeme d'alimentation en courant et de charge de batterie
US5463305A (en) * 1982-06-07 1995-10-31 Norand Corporation Fast battery charging system and method
US6275007B1 (en) * 1999-05-14 2001-08-14 Murata Manufacturing Co., Ltd. Charging controller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5463305A (en) * 1982-06-07 1995-10-31 Norand Corporation Fast battery charging system and method
WO1993019508A1 (fr) * 1992-03-18 1993-09-30 Grid Systems Corporation Systeme d'alimentation en courant et de charge de batterie
US6275007B1 (en) * 1999-05-14 2001-08-14 Murata Manufacturing Co., Ltd. Charging controller

Similar Documents

Publication Publication Date Title
CN101141077B (zh) 电池控制装置和电池控制方法
US7531986B2 (en) Power supply for battery powered devices
KR101485665B1 (ko) 셀 밸런싱 회로 및 이를 이용한 셀 밸런싱 방법
US8793086B2 (en) Method and system for detecting power supply source electrical current capacity
KR20150072409A (ko) 배터리 팩의 사이클 수명 용량을 개선하기 위한 방법 및 장치
JP2011082158A (ja) バッテリーパックの充電制御方法
CN103730915A (zh) 充电控制方法及使用该方法的电子装置
CN101782628B (zh) 电池特性追踪方法及电路
JP2013236492A (ja) 電池モジュール、及び電池管理システム
US20100270981A1 (en) Power source apparatus and secondary battery charge control method
CN109256825A (zh) 充电方法及电子装置
CN110365084B (zh) 充电控制方法、装置、终端及存储介质
KR20210078224A (ko) 배터리의 수명을 관리하기 위한 전자 장치 및 방법
US20060091854A1 (en) Power monitoring and balancing device
KR102055510B1 (ko) 적응적 배터리 충전 제어 방법 및 배터리 충전장치
CN101124707A (zh) 用于给二次电池充电的系统、方法和半导体设备
US20110260694A1 (en) Built-in charger
EP2493048B1 (fr) Procédé et système pour détecter une capacité de courant électrique source d'alimentation électrique
EP1315977B1 (fr) Appareil electronique et procede de commande
CN101728846B (zh) 充电系统与充电方法
US20210296920A1 (en) Charge and discharge control apparatus and electronic device
TWI515942B (zh) 用以延長電池之使用壽命的系統與電池供電裝置
WO2008151643A1 (fr) Appareil de chargement de batterie et procédé de chargement d'une batterie
KR100694062B1 (ko) 다중 배터리 충전 장치 및 제어 방법
US11581748B2 (en) Methods and apparatus for a battery

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07725980

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07725980

Country of ref document: EP

Kind code of ref document: A1