JPH05160774A - Portable telephone set charger on-vehicle - Google Patents
Portable telephone set charger on-vehicleInfo
- Publication number
- JPH05160774A JPH05160774A JP3324369A JP32436991A JPH05160774A JP H05160774 A JPH05160774 A JP H05160774A JP 3324369 A JP3324369 A JP 3324369A JP 32436991 A JP32436991 A JP 32436991A JP H05160774 A JPH05160774 A JP H05160774A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- portable telephone
- vehicle
- microcomputer
- battery pack
- 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.)
- Pending
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
- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3883—Arrangements for mounting batteries or battery chargers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Transceivers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は公衆通信機器として利用
する携帯電話装置用車載充電装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted charging device for a mobile phone device used as a public communication device.
【０００２】[0002]
【従来の技術】図２は従来の車載充電装置の構成を示し
ている。図２において２１は携帯電話装置であり、電池
２２ａを内蔵する電池パック２２が取付可能になってい
る。この電池パック２２はセル数が同じで容量が異なる
ものが２種類以上存在し、電池識別端子２３によってそ
の種類が携帯電話または充電器に識別されるようになっ
ている。2. Description of the Related Art FIG. 2 shows the configuration of a conventional vehicle-mounted charging device. In FIG. 2, reference numeral 21 denotes a mobile phone device to which a battery pack 22 having a battery 22a can be attached. There are two or more types of battery packs 22 having the same number of cells and different capacities, and the type is identified by the battery identification terminal 23 as a mobile phone or a charger.
【０００３】２４は携帯電話装置２１内に設けられた内
部回路、２６は携帯電話装置２１に取り付けられた外部
接続用コネクタ、２５は携帯用電話装置２１内に設けら
れ外部電源と電池電源とを切り替える切替用スイッチで
ある。かくして、携帯用電話装置２１は内部回路２４と
外部接続用コネクタ２６と切替用スイッチ２５と電池識
別端子２３とから構成されている。Reference numeral 24 is an internal circuit provided in the mobile phone device 21, 26 is an external connection connector attached to the mobile phone device 21, and 25 is an internal power supply and a battery power supply provided in the mobile phone device 21. This is a switch for switching. Thus, the portable telephone device 21 is composed of the internal circuit 24, the external connection connector 26, the changeover switch 25, and the battery identification terminal 23.
【０００４】一方、２８は車載充電器であり、充電器２
９と携帯電話用電源２１０と外部接続用コネクタ２１１
より構成されている。この車載充電器２８は車のバッテ
リ（図示しない）の電圧Ｖｃｃより電源供給が行われる
ようになっている。２７は両端にコネクタ２７ａ、２７
ｂを接続した接続ケーブルであり、コネクタ２７ａは携
帯用電話装置２１の外部接続用せネクタ２６に接続さ
れ、コネクタ２７ｂは車載充電器２８のコネクタ２１１
に接続されるようになっている。この接続ケーブル２７
の代わりに外部接続用コネクタ２６と２１１が直接接続
されている場合もある。On the other hand, 28 is a vehicle-mounted charger, and the charger 2
9, power supply 210 for mobile phones, and external connection connector 211
It is composed of The on-vehicle charger 28 is powered by the voltage Vcc of the vehicle battery (not shown). 27 has connectors 27a, 27 on both ends
The connector 27a is connected to the external connection connector 26 of the portable telephone device 21, and the connector 27b is the connector 211 of the in-vehicle charger 28.
It is designed to be connected to. This connection cable 27
In some cases, the external connection connectors 26 and 211 are directly connected instead of.
【０００５】次に上記従来例の動作について説明する。
図２において、携帯用電話装置２１は単独の場合、電池
パック２２より電源供給を受けているが、車載充電器２
８が接続された場合、それを検出し、切替スイッチ２５
が外部電源側に変わり、携帯用電話装置２１は携帯用電
源２１０より電源供給される。また、電源パック２２は
充電器２９に接続され、充電を始める。電池の種類を判
別する電池識別端子２３は充電器２９に接続され、充電
器２９はその情報により充電々流を変える。Next, the operation of the above conventional example will be described.
In FIG. 2, the portable telephone device 21 is supplied with power from the battery pack 22 when it is used alone.
When 8 is connected, it is detected and the changeover switch 25
Is changed to the external power source side, and the portable telephone device 21 is supplied with power from the portable power source 210. The power pack 22 is also connected to the charger 29 to start charging. The battery identification terminal 23 for determining the type of battery is connected to the charger 29, and the charger 29 changes the charging flow according to the information.
【０００６】このように上記従来の車載充電装置では、
その中に充電器２９と携帯電話用電源２１０を個別に持
つことにより、携帯電話装置２１を動作させながら電池
パック２２に充電させることができる。As described above, in the above conventional vehicle-mounted charging device,
By separately having the charger 29 and the mobile phone power supply 210 therein, the battery pack 22 can be charged while operating the mobile phone device 21.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記従
来の車載充電装置では、車載充電器２８の中に充電器２
９と携帯電話用電源２１０の２個の電源を持つため、車
載充電器２８の小型化が図れないという問題があった。However, in the above conventional vehicle-mounted charging device, the charger 2 is installed in the vehicle-mounted charger 28.
9 and the mobile phone power supply 210, there is a problem that the in-vehicle charger 28 cannot be downsized.
【０００８】本発明はこのような従来の問題を解決する
ものであり、小型化が図れる優れた携帯電話車載充電装
置を提供することを目的とするものである。The present invention is intended to solve such conventional problems, and it is an object of the present invention to provide an excellent portable telephone in-vehicle charging device which can be miniaturized.
【０００９】[0009]
【課題を解決するための手段】本発明は上記目的を達成
するために、携帯電話装置内に内蔵されマイクロコンピ
ュータを含む内部回路と、携帯電話装置の車載充電器内
に設けられたマイクロコンピュータとを設け、携帯電話
装置に車載充電器が接続されたとき、携帯電話装置内の
内部回路が電池パックの種類に応じた制御データを携帯
電話装置内のマイクロコンピュータから車載充電器内の
マイクロコンピュータに電池パックの種類と携帯用電話
装置の送信オン／オフ情報を送信し、携帯電話装置の状
態に応じて車載充電器内のマイクロコンピュータより充
電々流を制御し、フローティング充電を行うようにした
ものである。In order to achieve the above object, the present invention provides an internal circuit including a microcomputer incorporated in a portable telephone device, and a microcomputer provided in an in-vehicle charger of the portable telephone device. When the in-vehicle charger is connected to the mobile phone device, the internal circuit in the mobile phone device sends control data according to the type of the battery pack from the microcomputer in the mobile phone device to the microcomputer in the in-vehicle charger. Floating charging is performed by transmitting the battery pack type and transmission on / off information of the mobile phone device, and controlling the charging flow from the microcomputer in the vehicle charger according to the state of the mobile phone device. Is.
【００１０】[0010]
【作用】したがって、本発明によれば、電池パック充電
用の車載充電器を携帯電話用電源としても使用すること
によって、車載充電器内の電源を一系統にすることがで
きるとともに、携帯電話装置内の電池パックと外部電源
端子が共通になるため、携帯電話装置内の電源切替スイ
ッチを省くことができるとう効果を有する。Therefore, according to the present invention, by using the on-vehicle charger for charging the battery pack also as the power source for the mobile phone, the power source in the on-vehicle charger can be made one system and the mobile phone device can be used. Since the internal battery pack and the external power supply terminal are common, there is an effect that the power supply changeover switch in the mobile phone device can be omitted.
【００１１】[0011]
【実施例】図１は本発明の第１の実施例の構成を示すも
のである。図１において、１１は携帯電話装置であり、
電池１２ａを有する電池パック１２が取付可能になって
いる。電池パック１２はセル数が同じで容量が異なるも
のが大小２種類以上ある。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of the first embodiment of the present invention. In FIG. 1, 11 is a mobile phone device,
A battery pack 12 having a battery 12a can be attached. There are two or more types of battery packs 12 having the same number of cells but different capacities.
【００１２】１３は内部回路１４と外部コネクタに接続
され、電池パック１２の２種類の種別情報を内部回路１
４に伝える電池識別端子である。この内部回路１４には
マイクロコンピュータが内蔵されており、マイクロコン
ピュータは電池識別端子１３に接続される２種類以上の
電池パック１２の種類を識別するようになっている。Reference numeral 13 is connected to the internal circuit 14 and the external connector, and the two types of information on the battery pack 12 are provided to the internal circuit 1.
4 is a battery identification terminal that is transmitted to No. 4. The internal circuit 14 has a built-in microcomputer, and the microcomputer discriminates between two or more types of battery packs 12 connected to the battery identification terminal 13.
【００１３】１５は電池パック１２の電池識別端子１
３、内部回路１４にそれぞれ接続され、携帯用電話装置
１１に取り付けられた外部接続コネクタである。かくし
て、携帯電話装置１１は電池識別端子２３と内部回路１
４と、外部接続コネクタ１５とにより構成されている。Reference numeral 15 is a battery identification terminal 1 of the battery pack 12.
3 is an external connection connector that is connected to the internal circuit 14 and is attached to the portable telephone device 11. Thus, the mobile phone device 11 has the battery identification terminal 23 and the internal circuit 1
4 and an external connection connector 15.
【００１４】一方、１７は電池パック１２の充電用の車
載充電器であり、１８はエミッタに車のバッテリ（図示
せず）の電圧Ｖｃｃが印加されており、コネクタは逆流
防止用のダイオード２０を介して車載充電器１７に取り
付けた外部接続コネクタ１１０に接続され、ベースには
充電電流制御回路１９の出力端に接続された充電器用の
ドライバトランジスタである。このドライバトランジス
タ１８からダイオード２０を経て電池パック１２内の電
池１２ａに充電々流を流すようになっている。On the other hand, 17 is an on-vehicle charger for charging the battery pack 12, 18 is a voltage Vcc of a car battery (not shown) applied to the emitter, and the connector is a diode 20 for preventing backflow. A driver transistor for the charger, which is connected to the external connection connector 110 attached to the vehicle-mounted charger 17 via the base and is connected to the output end of the charging current control circuit 19 at the base. A charging stream is allowed to flow from the driver transistor 18 to the battery 12a in the battery pack 12 via the diode 20.
【００１５】この充電々流制御回路１９は携帯電話装置
１１の内部回路１４の電池パック１２内の電流１２ａの
充電々流を制御するものであり、上記外部接続コネクタ
に接続されている。また、１１１は車載充電器１７に内
蔵され、車のバッテリからの電圧Ｖｃｃが印加されると
ともに、携帯電話装置１１の内部回路１４のマイクロコ
ンピュータとの間にデータの授受を行って充電々流制御
回路１９とドライバトランジスタ１８を制御するマイク
ロコンピュータである。マイクロコンピュータ１１１も
外部接続コネクタ１１０に接続されている。かくして、
車載充電器１７はドライバトランジスタ１８、充電々流
制御回路１９、外部接続コネクタ１１０、マイクロコン
ピュータ１１１とにより構成されている。The charge flow control circuit 19 controls the charge flow of the current 12a in the battery pack 12 of the internal circuit 14 of the portable telephone device 11 and is connected to the external connector. In addition, 111 is built in the vehicle-mounted charger 17, and the voltage Vcc from the battery of the vehicle is applied, and data is exchanged with the microcomputer of the internal circuit 14 of the mobile phone device 11 to control the charge flow. It is a microcomputer that controls the circuit 19 and the driver transistor 18. The microcomputer 111 is also connected to the external connection connector 110. Thus,
The in-vehicle charger 17 is composed of a driver transistor 18, a charge flow control circuit 19, an external connector 110, and a microcomputer 111.
【００１６】１６は両端にコネクタ１６ａ、１６ｂを接
続した接続ケーブルである。コネクタ１６ａは携帯電話
装置１１の外部接続コネクタ１５に接続され、コネクタ
１６ｂは車載充電器１７の外部接続コネクタ１１０に接
続されるようになっている。なお、上記電池識別端子１
３は直接車載充電器１７に接続されてもよい。Reference numeral 16 is a connection cable in which connectors 16a and 16b are connected at both ends. The connector 16a is connected to the external connection connector 15 of the mobile phone device 11, and the connector 16b is connected to the external connection connector 110 of the vehicle-mounted charger 17. In addition, the battery identification terminal 1
3 may be directly connected to the vehicle-mounted charger 17.
【００１７】次に、上記第１の実施例の動作について説
明する。上記第１の実施例において、携帯電話装置１１
と電池パック１２が接続されるとともに、接続ケーブル
１６のコネクタ１６ａ、１６ｂをそれぞれ外部接続コネ
クタ１５、１１０に接続して、携帯電話装置１１と車載
充電器１７とを接続する電池識別端子１３を通じて電池
パック１２の種類を内部回路１４に含まれるマイクロコ
ンピュータが識別する。この情報は内部回路１４からシ
リアルデータにより、外部接続コネクタ１５−コネクタ
１６ａ−接続ケーブル１６−コネクタ１６ｂ、外部接続
コネクタ１１０を通じて車載充電器１７内のマイクロコ
ンピュータ１１１に伝える。Next, the operation of the first embodiment will be described. In the first embodiment, the mobile phone device 11
And the battery pack 12 are connected, the connectors 16a and 16b of the connection cable 16 are connected to the external connection connectors 15 and 110, respectively, and the battery is supplied through the battery identification terminal 13 that connects the mobile phone device 11 and the in-vehicle charger 17. The microcomputer included in the internal circuit 14 identifies the type of the pack 12. This information is transmitted from the internal circuit 14 as serial data to the microcomputer 111 in the vehicle charger 17 through the external connection connector 15-connector 16a-connection cable 16-connector 16b and the external connection connector 110.
【００１８】マイクロコンピュータ１１１はこの情報を
受け取って充電々流制御回路１９とドライバトランジス
タ１８を制御し、大電池または小電池用の充電々流に設
定する。電池の種類に関する情報は電池識別端子１３−
外部接続コネクタ１５−コネクタ１６ａ−接続ケーブル
１６−コネクタ１６ｂ−外部接続コネクタ１１０を介し
て直接マイクロコンピュータに送出してもよい。The microcomputer 111 receives this information and controls the charge flow control circuit 19 and the driver transistor 18 to set the charge flow for a large battery or a small battery. For information on the type of battery, see the battery identification terminal 13-
It may be sent directly to the microcomputer via the external connection connector 15-connector 16a-connection cable 16-connector 16b-external connection connector 110.
【００１９】また、携帯電話装置１１が送信状態のと
き、内部回路１４が消費する消費電流は小電池への充電
々流より大きく、その状態が続くと、電池パック１２に
は充電されず、逆に放電状態になってしまう。したがっ
て、内部回路１４からマイクロコンピュータ１１１へは
携帯電話装置１１の送信状態の情報も送り、マイクロコ
ンピュータ１１１はこれらの情報を判断し充電々流制御
回路１９を制御して電池パック１２の充電々流を制御す
る。次の（表１）は各状態における充電々流を示してい
る。Further, when the portable telephone device 11 is in the transmitting state, the current consumption of the internal circuit 14 is larger than the charging current for charging the small battery, and if the state continues, the battery pack 12 is not charged, and the reverse condition occurs. It becomes a discharge state. Therefore, the internal circuit 14 also sends the information on the transmission state of the mobile phone device 11 to the microcomputer 111, and the microcomputer 111 judges this information and controls the charge flow control circuit 19 to charge the battery pack 12. To control. The following (Table 1) shows the charge flow in each state.
【００２０】[0020]
【表１】 [Table 1]
【００２１】このように、上記第１実施例によれば、携
帯電話１１に大小いずれかの電池パック１２が接続され
ていても、適切な充電々流が選択され、また送信オン／
オフ状態でも充分な充電々流が供給されるため、完全な
るフローティング充電を行うことができる。As described above, according to the first embodiment, regardless of whether the battery pack 12 of any size is connected to the mobile phone 11, the appropriate charging flow is selected and the transmission is turned on / off.
Even in the off state, a sufficient charge flow is supplied, so that complete floating charge can be performed.
【００２２】また、上記第１の実施例によれば、負荷と
車載充電器１７が直接接続しているフローティング充電
のため、従来例にあった電源切替スイッチを省くことが
できるという効果も有する。Further, according to the first embodiment, since the load and the on-vehicle charger 17 are directly connected to each other by the floating charging, there is an effect that the power source changeover switch in the conventional example can be omitted.
【００２３】[0023]
【発明の効果】本発明は上記実施例より明らかなよう
に、携帯電話装置用の車載充電器をフローティング動作
させたものであり、携帯電話装置の送信状態と電池パッ
クの種類に応じて充電々流を適切に制御できるととも
に、フローティング動作を行うため、携帯電話装置内の
電源切替スイッチが不要となるという効果を有する。As is apparent from the above embodiment, the present invention is one in which an in-vehicle charger for a mobile telephone device is operated in a floating manner, and charging is performed depending on the transmission state of the mobile telephone device and the type of battery pack. Since the flow can be controlled appropriately and the floating operation is performed, there is an effect that a power source changeover switch in the mobile phone device is unnecessary.
【図１】本発明の第１の実施例における携帯電話車載充
電装置の概略ブロック図FIG. 1 is a schematic block diagram of a mobile phone vehicle-mounted charging device according to a first embodiment of the present invention.
【図２】従来の車載充電装置の概略ブロック図FIG. 2 is a schematic block diagram of a conventional vehicle-mounted charging device.
１１ 携帯電話装置 １２ 電池パック １２ａ 電池 １３ 電池識別端子 １４ 内部回路 １５ 外部接続コネクタ １６ 接続ケーブル １７ 車載充電器 １８ ドライバトランジスタ １９ 充電々流制御回路 １１０ 外部接続コネクタ １１１ マイクロコンピュータ 11 Mobile Phone Device 12 Battery Pack 12a Battery 13 Battery Identification Terminal 14 Internal Circuit 15 External Connection Connector 16 Connection Cable 17 In-vehicle Charger 18 Driver Transistor 19 Charging Current Control Circuit 110 External Connection Connector 111 Microcomputer
Claims (1)
電池パックが接続されることによりその種類を識別する
電池識別端子と、上記携帯用電話装置に内蔵され電池パ
ックの種類に応じた情報と上記携帯用電話装置の送信オ
ン／オフ状態の情報を出力するマイクロコンピュータを
含む内部回路と、車載充電器に内蔵さえれて車のバッテ
リから給電され上記電池パックに充電々流を供給するド
ライバトランジスタと、このドライバトランジスタから
流れる充電々流を制御する充電々流制御回路と、上記内
部回路からの上記電池パックの種類に応じた情報と上記
携帯用電話装置の送信オン／オフ状態の情報を受け取っ
て上記充電々流制御回路およびドライバトランジスタを
制御するマイクロコンピュータとを備えた携帯電話用車
載充電装置。1. A battery identification terminal provided in a portable telephone device for identifying two or more types of battery packs connected to each other, and information according to the type of the battery pack built in the portable telephone device. And an internal circuit that includes a microcomputer that outputs the transmission on / off state information of the portable telephone device, and a driver that is built in an in-vehicle charger and that is supplied with power from a vehicle battery and that supplies a full-charge stream to the battery pack. A transistor, a charge flow control circuit for controlling the charge flow flowing from the driver transistor, information according to the type of the battery pack from the internal circuit, and transmission on / off state information of the portable telephone device. An in-vehicle charging device for a mobile phone, which comprises a microcomputer for receiving and controlling the charge flow control circuit and a driver transistor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3324369A JPH05160774A (en) | 1991-12-09 | 1991-12-09 | Portable telephone set charger on-vehicle |
| GB9225550A GB2262401B (en) | 1991-12-09 | 1992-12-07 | Vehicle-mounted charging apparatus for portable telephone sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3324369A JPH05160774A (en) | 1991-12-09 | 1991-12-09 | Portable telephone set charger on-vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05160774A true JPH05160774A (en) | 1993-06-25 |
Family
ID=18165022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3324369A Pending JPH05160774A (en) | 1991-12-09 | 1991-12-09 | Portable telephone set charger on-vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH05160774A (en) |
| GB (1) | GB2262401B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5825161A (en) * | 1996-10-01 | 1998-10-20 | Uniden Corporation | Battery pack and charging device |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05168168A (en) * | 1991-12-16 | 1993-07-02 | Nec Corp | Charger for portable telephone |
| US5771471A (en) * | 1993-06-30 | 1998-06-23 | Motorola, Inc. | Charge regulator for a radio telephone |
| GB2285188B (en) * | 1993-06-30 | 1998-05-13 | Motorola Inc | Electronic device for controlling application of a charging current thereto |
| JP2530098B2 (en) * | 1993-08-30 | 1996-09-04 | 八重洲無線株式会社 | Portable electronic device, its battery pack, its charger, and its attachment |
| GB2284127B (en) * | 1993-11-22 | 1998-08-12 | Matsushita Electric Ind Co Ltd | Cordless telephone system |
| JP2979939B2 (en) | 1993-12-27 | 1999-11-22 | 株式会社日立製作所 | Operation method of secondary battery system |
| USRE39908E1 (en) | 1993-12-27 | 2007-11-06 | Hitachi, Ltd. | Secondary battery power storage system |
| DE4405163A1 (en) * | 1994-02-18 | 1995-08-24 | Bosch Gmbh Robert | Electric drive unit for a blackout device |
| JP2986059B2 (en) * | 1995-03-08 | 1999-12-06 | インターナショナル・ビジネス・マシーンズ・コーポレイション | Battery charger |
| US5668462A (en) * | 1995-05-08 | 1997-09-16 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for controlling a charging current of a battery in a portable chargeable electronic unit |
| US5705929A (en) * | 1995-05-23 | 1998-01-06 | Fibercorp. Inc. | Battery capacity monitoring system |
| US5729115A (en) * | 1996-06-11 | 1998-03-17 | Ericsson Inc. | Apparatus and method for identifying and charging batteries of different types |
| JP3492541B2 (en) | 1999-02-24 | 2004-02-03 | 埼玉日本電気株式会社 | Wireless communication equipment |
| CN1691459A (en) * | 2004-04-22 | 2005-11-02 | 日本电气株式会社 | Portable electronic device and mobile communication terminal |
| US7791316B2 (en) | 2004-07-22 | 2010-09-07 | Pine Valley Investments, Inc. | Battery with isolated charging circuit for LMR portable radio applications |
| JP5066909B2 (en) * | 2006-12-08 | 2012-11-07 | 日本電気株式会社 | Electronic device, charger, charging system, and charging method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4919008A (en) * | 1972-06-14 | 1974-02-20 | ||
| JPH02307336A (en) * | 1989-05-19 | 1990-12-20 | Matsushita Electric Ind Co Ltd | Battery charger |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4684870A (en) * | 1986-04-09 | 1987-08-04 | Uniden Corp. Of America | Transceiver battery charging apparatus and method |
| JPH0340728A (en) * | 1989-07-05 | 1991-02-21 | Nec Corp | Portable radio telephone charger |
| CA2022802A1 (en) * | 1989-12-05 | 1991-06-06 | Steven E. Koenck | Fast battery charging system and method |
| GB2239567A (en) * | 1990-04-05 | 1991-07-03 | Technophone Ltd | Portable radio telephone useable with batteries of different types; battery charging |
| US5185565A (en) * | 1990-10-01 | 1993-02-09 | Sanyo Electric Co., Ltd. | Charge control apparatus for use with electronic equipment |
-
1991
- 1991-12-09 JP JP3324369A patent/JPH05160774A/en active Pending
-
1992
- 1992-12-07 GB GB9225550A patent/GB2262401B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4919008A (en) * | 1972-06-14 | 1974-02-20 | ||
| JPH02307336A (en) * | 1989-05-19 | 1990-12-20 | Matsushita Electric Ind Co Ltd | Battery charger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5825161A (en) * | 1996-10-01 | 1998-10-20 | Uniden Corporation | Battery pack and charging device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2262401B (en) | 1995-08-23 |
| GB2262401A (en) | 1993-06-16 |
| GB9225550D0 (en) | 1993-01-27 |
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