WO1997045997A1 - Chargeur d'accumulateur - Google Patents

Chargeur d'accumulateur Download PDF

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Publication number
WO1997045997A1
WO1997045997A1 PCT/GB1997/001345 GB9701345W WO9745997A1 WO 1997045997 A1 WO1997045997 A1 WO 1997045997A1 GB 9701345 W GB9701345 W GB 9701345W WO 9745997 A1 WO9745997 A1 WO 9745997A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
charging unit
battery charging
housing
unit according
Prior art date
Application number
PCT/GB1997/001345
Other languages
English (en)
Inventor
Nils Martensson
Original Assignee
Ipr Industries Ltd.
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
Priority claimed from GBGB9611423.6A external-priority patent/GB9611423D0/en
Priority claimed from GBGB9622585.9A external-priority patent/GB9622585D0/en
Application filed by Ipr Industries Ltd. filed Critical Ipr Industries Ltd.
Priority to AU29047/97A priority Critical patent/AU2904797A/en
Publication of WO1997045997A1 publication Critical patent/WO1997045997A1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6675—Structural association with built-in electrical component with built-in electronic circuit with built-in power supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
    • 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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries

Definitions

  • the present invention relates to a battery charging unit for an electrical or electronic device, particularly, although not exclusively, for a cellular radio telephone.
  • portable cellular radio telephones are provided with removable batteries as their current source.
  • these batteries are Nickel - Cadmium (Ni - Cd) batteries which are rechargeable.
  • the battery is left attached to the cellular radio telephone, and is recharged "in situ" by means of a charging unit.
  • the charging unit is coupled to a mains alternating current (AC) supply via a conventional plug arrangement (in the United Kingdom, this is a 3 - pin arrangement well known to persons skilled in the art), and is coupled to the battery via a two - conductor cable to the telephone and, through internal circuitry, to the battery to be recharged.
  • Respective matching contacts are provided, on the casing of the telephone, and in a plug terminating the free end of the cable, to couple current to the telephone and battery.
  • the charger typically, may be a simple transformer/constant current generator, as is well known to persons skilled in the art.
  • the telephone may be provided with control logic and means to sense one or more parameters, for example battery temperature, these being indicative of the charge state of the battery. By monitoring such parameters, one is able to ensure that the battery is optimally recharged. Wilh this method of recharging, the battery is "fast - charged", that is where a constant current of, for example, 600 - 1000 mA is supplied to the battery to effect recharging. The telephone can still be used while the battery is being recharged.
  • one or more parameters for example battery temperature
  • So - called desk chargers are commonly provided for portable cellular radio telephones.
  • These desk chargers comprise desk stands adapted to stand on a desk or other flat surface, with a recess for receiving the telephone with a battery attached thereto.
  • the stand has a cable, which is coupled to a charging unit - similar to the one described above - which is coupled to the mains supply.
  • Contacts are provided in the recess to contact respective contacts provided on the telephone casing. These are for providing current to the battery for recharging, and for use in monitoring other parameters, for example, temperature, and which are used to provide optimum charging as described previously.
  • the desk stand may also incorporate a second recess for receiving a second, "spare" battery, to allow this battery to be recharged at the same time.
  • This slow - charging may use a pulsating current to provide a net current of around 60 - 100 mA or a constant current of around 60 - 100 mA, and is well known to persons skilled in the art.
  • control logic In order to fast - charge a battery, control logic is required to control the charging.
  • This control logic usually in the form of a microprocessor - is usually located in the telephone because of the extra space that this control logic requires, but it may be located in the charging unit or, rarely, in the battery itself. Slow charging does not require the same control logic
  • travelling chargers take the form of a charging unit - incorporating a transformer/constant current generator, with a pin arrangement for coupling it to the mains supply.
  • the casing for the charging unit is provided with a recess for receiving a spare battery. Contacts are provided within the recess for contacting matching contacts on the battery.
  • a "trickle" current is supplied to the battery when the charging unit is coupled to the mains supply, thereby slow charging the battery received therein.
  • the charging unit does not incorporate control logic for controlling fast charging, and therefore, is only capable of slow - charging a spare battery. This takes some time.
  • the recess may be perfectly located when using a fiat mounted socket, should a wall mounted socket or any type of vertically arranged socket be used, the recess may then be at such an angle that the battery will not stay in the recess or, if it does, does not make contact with the contacts properly, making charging impossible.
  • a battery charging unit comprising, a housing having a current supply means provided therein for supplying current to an electrical or electronic apparatus located remote from the battery charging unit, means for coupling the current supply means to a mains power supply, means for mounting a battery on the housing such that current from the current supply means is supplied to the battery mounted therein, and means for coupling the remote apparatus to the charging unit for supplying current, from the current supply means, thereto.
  • the dimensions of the charging unit can be kept small, and are mainly constrained by the dimensions of the battery, and the mains plug.
  • a battery charging unit comprising a housing having a current supply means provided therein for supplying current to an electrical or electronic apparatus located remote from the battery charging unit, coupling means provided on the housing for coupling the current supply means to a mains power supply, means for mounting a battery within the housing such that current is supplied from the current supply means to the battery mounted therein, the battery mounting means being provided such that the battery is mounted at an orientation whereby the longitudinal axis of the battery is at an acute angle to the horizontal and vertical axes of the housing.
  • figure 1 is an exploded perspective view of a charging unit in accordance with the invention, with a spare battery;
  • FIG 2 is a perspective view of the charging unit of Figure 1 , with the cover in place;
  • figure 3 is a schematic block diagram illustrating the operation of the charging unit
  • figure 4 is a schematic block diagram of a second embodiment of the invention.
  • figure 5 is a schematic block diagram of a third embodiment of the invention.
  • figure 6 is a perspective view of a fourth embodiment of the invention.
  • figure 7 is a perspective view of a further embodiment of a charging unit of the present invention.
  • figures 8a and 8b are views of a first portion of the side wall of the unit of figure 7 illustrating, in figure 8a the battery receiving recess uncovered, and, in figure 8b the battery receiving recess covered;
  • figure 9 schematically illustrates the charging unit of figure 7 plugged into a wall mounted mains socket with a spare battery in situ
  • figure 10 schematically illustrates the charging unit of figure 7 plugged into a floor mounted mains socket with a spare battery in situ.
  • a charging unit 1 comprises a casing 2, made, for example, from a moulded plastic material in a known manner.
  • a recess 3 configured to accommodate a battery 10 to be charged.
  • the recess 3 will be configured and dimensioned to accommodate the particular battery for which it is designed, and will have means for ensuring that the battery 10 is kept securely in place for charging.
  • the recess 3 may incorporate a groove 4 for co ⁇ operation with an elongated lug 5 provided on one end of the battery 10, and a gap 6 at the other end of the recess 3 to receive a flexible tongue 7 provided at the other end of the battery 10 so that the battery has a snap - fit within the recess 3.
  • the battery 10 is inserted in the recess 3 by first placing the lug 5 within the groove 4, and then lowering the battery 10 into place so that the flexible tongue 7 snap - fits within the recess 6, thereby holding the battery 10 in place during charging.
  • the battery 10 is simply removed by manually depressing the tongue 7, and using a gripper strip 18 to extract the battery from the recess 6 and then removing the lug 5 from the groove.
  • any other means of removably securing the battery within the recess can be employed.
  • These contacts 17 include two contacts for supplying current to the battery, and may also include other contacts, for example, for use in monitoring parameters, e.g. battery temperature, which is indicative of the charge state of the battery 10. The use of such parameter monitoring to ensure that batteries are fully charged while not being overcharged is well known to persons skilled in the art.
  • the respective contacts abut, thereby allowing current to be supplied to the battery 10 for recharging, while allowing the parameters to be sensed to ensure correct and optimal charging.
  • a removable cover 19 is provided for the recess 3 which protects the recess 3 when a battery 10 is not being charged or when the charging unit 1 is not in use.
  • the cover 18 can be provided with appropriate lug (not shown), and tongue T to engage with respective grooves 4 and gap 6 in the recess 3 so that it can be snap fitted on to the casing 2 in the same manner used to retain the battery 10 in place.
  • the cover 19 can be removed in the same way as the battery 10 using a gripper strip 18' provided on the flexible tongue T.
  • a wire or cable 8 extends from a second face 1 1.
  • the cable 8 is of a known two - conductor type and terminates, at its free end, in a plug 12 configured to co-operate with a matching socket 26 provided in the housing 27 of the remote portable radio telephone 21.
  • the cable 8 is coupled to a transformer/current generator arrangement 20 housed within the casing 2.
  • a conventional 2 - pin plug arrangement 14,15 i.e. current feed and return conductor, for coupling the mains supply 22 to current generator/transformer 20.
  • a third " dummy " pin 16 may be provided, where the mains supply has a 3 - pin socket arrangement (for example in the United Kingdom).
  • the charging unit 1 is plugged into the mains supply 22 using the external pins 14,15,16, and the cable plug 12 is connected to the telephone 21 with a battery 23 in situ. This will allow the telephone battery 23 to be fast - charged.
  • Control logic 25 provided in the telephone controls fast - charging of the telephone battery 23 in a known manner.
  • a spare battery 10 can be placed in the recess 3 for slow - charging. In this way, it is possible to fast - charge a battery attached to a telephone, while, at the same time, slow - charging a spare battery.
  • the cable plug 12 it would be possible for the cable plug 12 to be configured to connect to a desk stand 30 rather than a telephone per se, so as lo operate the desk stand 30 in the usual manner to fast - charge a telephone battery 23 and a second spare battery 31.
  • the charging unit 1 may also comprise control logic 24, operable to allow the spare battery 10 to be fast - charged when attached to the charging unit 1 when either the telephone battery 23 is fully charged or when no telephone 21 is coupled to the charging unit 1.
  • the charging unit 1 can be provided with second, short, cable 28 coupling the transformer/generator 20 to a conventional plug 29 for coupling to a mains socket to replace the pins 14,15,16. This would allow the casing to be placed on the floor or other flat surface near the mains supply socket.
  • the charging unit 1 can use a transformer and rectifier circuit with means for current and over voltage limiting, or a conventional switch - mode power supply as the current generator arrangement with the control logic built in accordance with known techniques.
  • a battery charging unit 1 comprises a casing 2, made of a plastic material in a known manner.
  • the casing 2 has teardrop-shaped front and rear faces 3,4 and a continuous side wall 12.
  • a pair of pins 5a,5b adapted to be received into a conventional electrical socket, such as a wall socket, in order to to couple the battery charging unit 1 to a mains power supply.
  • the pins 5a,5b are those for the US mains supply, but may equally well be of the three-pin type for the UK, or any other known pin arrangement.
  • a recess 6 into which may be placed a battery 7 to be recharged.
  • a number of contacts 8 for contacting matching contacts (not shown) provided on the battery 7. These contacts 8 are used for supplying current to the battery 7 for recharging, and to monitor the charge state of the battery 7 to ensure optimum charging.
  • the recharging of the battery is carried out in any known manner.
  • the electrical couplings and internal circuitry are not illustrated in the drawings. The couplings are achieved by any suitable known means.
  • a slidable cover 9 is provided to cover the recess 6 to prevent damage to the recess 6, and, in particular, the contacts 8, when the charging unit 1 is not being used to charge a battery in this way.
  • the battery charging unit 1 is provided wilh means to recharge a spare battery 7 by placing it in the recess 6.
  • the cover 9 is retracted and the spare battery 7 inserted in the recess 6 so that the contacts 8 contact the matching contacts on the spare battery 7.
  • the recess 6 is located in the side wall 12 at such a location, and dimensioned such that, when the charging unit 1 is plugged into a socket mounted on a wall 19 as illustrated in Figure 6, the spare battery 7 is oriented at an acute angle to the vertical- preferably around 45 degrees - so that the battery 7 remains in the recess 6 under gravity and the frictional fit within the recess 6. Similarly, when the charging unit 1 is plugged into a socket mounted on the floor 20, as illustrated in Figure 7, the battery 7 remains at an acute angle - again preferably around 45 degrees - to the vertical, and, therefore also remains in the recess.
  • various modifications arc possible within the scope of the present invention. For example, other shapes of battery charging unit are possible.
  • the pin arrangement can be selected to correspond with the plug and socket convention of the region where the unit is to be used.
  • the recess is dimensioned to receive the appropriate battery.
  • the recess can also be dimensioned to receive the whole telephone rather than simply the battery.
  • the battery charger can be used to recharge batteries for other electrical or electronic apparatus, for example a portable personal computer.
  • the recess can be dimensioned and configured in any way, dependant upon the battery to be charged.
  • the battery contacts and pins can be configured to suit the particular battery to be charged.
  • other socket and plug arrangements are possible both for the plug for the telephone, and for the plug for the mains supply socket.
  • Any current generator which is able to supply the required current while being able to be housed within a suitable casing can be used.
  • the cover can be slidable attached to the casing rather than removably attached to the casing to allow access to the recess.
  • the cable can be a 3-conductor cable.
  • the charging unit will of course be suitable for charging batteries for all sorts of applications, for example, video camcorders etc.
  • the battery could be of any type, for example, Nickel Metal Hydride or Lithium Ion.

Landscapes

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

Abstract

L'invention concerne un chargeur d'accumulateur comportant un boîtier. Le boîtier comprend un système d'alimentation amenant le courant à un appareil électrique ou électronique situé à distance du chargeur; un système permettant de coupler le chargeur au réseau par une prise classique; un système permettant de le coupler à l'accumulateur, qui comporte un évidement et des contacts par lesquels on peut fixer un accumulateur à l'intérieur du boîtier, de façon à amener le courant provenant du système d'alimentation à l'accumulateur fixé à l'intérieur; et un système permettant de le coupler à l'appareil. L'accumulateur se place de préférence sur une prise classique. Le courant provenant du système d'alimentation est amené simultanément audit appareil électrique ou électronique et audit accumulateur, ce qui permet de charger simultanément ledit dispositif et ledit accumulateur.
PCT/GB1997/001345 1996-05-31 1997-05-16 Chargeur d'accumulateur WO1997045997A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29047/97A AU2904797A (en) 1996-05-31 1997-05-16 Battery charging unit

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9611423.6A GB9611423D0 (en) 1996-05-31 1996-05-31 Battery charging unit
GB9611423.6 1996-05-31
GBGB9622585.9A GB9622585D0 (en) 1996-10-30 1996-10-30 Battery charging unit
GB9622585.9 1996-10-30

Publications (1)

Publication Number Publication Date
WO1997045997A1 true WO1997045997A1 (fr) 1997-12-04

Family

ID=26309421

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/001345 WO1997045997A1 (fr) 1996-05-31 1997-05-16 Chargeur d'accumulateur

Country Status (3)

Country Link
AU (1) AU2904797A (fr)
GB (1) GB2313722A (fr)
WO (1) WO1997045997A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2812468B1 (fr) * 2000-07-28 2002-12-06 Sagem Batterie et chargeur de telephone a determination de parametres de charge fiabilisee
US20050024021A1 (en) * 2003-05-07 2005-02-03 Milwaukee Electric Tool Corporation Battery charger and assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922178A (en) * 1987-08-31 1990-05-01 Motorola, Inc. Dual source rechargeable battery
US5059885A (en) * 1989-08-23 1991-10-22 Motorola, Inc. Battery charger with battery positioning and support apparatus
US5160879A (en) * 1991-10-08 1992-11-03 Curtis Manufacturing Company, Inc. Safe, rechargeable, battery-containing power pack and method
US5391972A (en) * 1988-03-11 1995-02-21 Gardner; Billy J. Cordless tool battery housing and charging system
WO1997009764A2 (fr) * 1995-08-29 1997-03-13 Asian Micro Sources, Inc. Module d'alimentation en courant a interchangeabilite universelle, avec chargeur de piles integre

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447058A (en) * 1966-05-27 1969-05-27 Sunbeam Corp Rechargeable battery operated appliance
DE1817653A1 (de) * 1968-01-02 1969-07-31 Sperry Rand Corp Ladevorrichtung fuer elektrische Geraete
US4225814A (en) * 1978-08-11 1980-09-30 Black & Decker, Inc. Cordless vacuum cleaner storing and recharging system
GB2072969B (en) * 1980-03-25 1984-04-04 Gen Electric Battery charger for plural cell holding modules
US4636703A (en) * 1984-09-03 1987-01-13 Sanyo Electric Co., Ltd. Charging apparatus
US5189358A (en) * 1991-05-07 1993-02-23 Fujitsu Limited Adaptor for mounting portable radio apparatus to moving body and charger for portable radio apparatus
JP3289393B2 (ja) * 1992-09-18 2002-06-04 ソニー株式会社 ビデオカメラ用充電システム
JPH0668295U (ja) * 1993-02-22 1994-09-22 怡利電子工業股▲ひん▼有限公司 充電式電池の充電器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922178A (en) * 1987-08-31 1990-05-01 Motorola, Inc. Dual source rechargeable battery
US5391972A (en) * 1988-03-11 1995-02-21 Gardner; Billy J. Cordless tool battery housing and charging system
US5059885A (en) * 1989-08-23 1991-10-22 Motorola, Inc. Battery charger with battery positioning and support apparatus
US5160879A (en) * 1991-10-08 1992-11-03 Curtis Manufacturing Company, Inc. Safe, rechargeable, battery-containing power pack and method
WO1997009764A2 (fr) * 1995-08-29 1997-03-13 Asian Micro Sources, Inc. Module d'alimentation en courant a interchangeabilite universelle, avec chargeur de piles integre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GOODENOUGH F: "NICD BATTERY CHARGER HIDES IN AC-LINE PLUG", ELECTRONIC DESIGN, vol. 41, no. 17, 19 August 1993 (1993-08-19), pages 41 - 42, 46, 48, 50, 53, XP000387674 *

Also Published As

Publication number Publication date
AU2904797A (en) 1998-01-05
GB2313722A (en) 1997-12-03
GB9709847D0 (en) 1997-07-09

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