JP2001085069A - Battery pack and power supply system using it - Google Patents

Battery pack and power supply system using it

Info

Publication number
JP2001085069A
JP2001085069A JP26011399A JP26011399A JP2001085069A JP 2001085069 A JP2001085069 A JP 2001085069A JP 26011399 A JP26011399 A JP 26011399A JP 26011399 A JP26011399 A JP 26011399A JP 2001085069 A JP2001085069 A JP 2001085069A
Authority
JP
Japan
Prior art keywords
battery
battery pack
power supply
pack
charger
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
Application number
JP26011399A
Other languages
Japanese (ja)
Inventor
Hiroshi Takada
浩志 高田
Atsuo Matsumoto
淳雄 松本
Hisao Makino
久雄 牧野
Akira Yamamori
章 山森
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP26011399A priority Critical patent/JP2001085069A/en
Publication of JP2001085069A publication Critical patent/JP2001085069A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a battery pack capable of being mounted removably in a body apparatus and a power supply system, capable of charging the battery pack whether it is mounted in the body apparatus or removed, by equipping the battery pack with an external power input terminal. SOLUTION: A battery pack 3 is equipped with a secondary battery and an output terminal to supply power therefrom to an electronic apparatus in connection, wherein the battery and output terminal are accommodated in a case for pack, and also with an external power input terminal 4 for receiving the power fed from the commercial main through a charger 6, and thereby the pack 3 in the condition mounted in the body apparatus 2 can be supplied with power in such a way that the body apparatus 2 is skipped, which enables substitution with a battery pack 3 of any other battery system, and even for an electronic apparatus 2 to work with a primary battery, this pack 3 using secondary battery is serviceable with exchangeability with primary battery kept by configuring the battery pack itself 3 as accommodatable in the battery accommodation part 10.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、電子機器に装着さ
れる電池パック及びそれを用いた電源システムに関する
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack mounted on an electronic device and a power supply system using the same.

【0002】[0002]

【従来の技術】昨今、携帯型のパーソナルコンピュー
タ、ビデオカメラ、携帯電話等の電子機器が隆盛を極め
ており、その電源としてリチウムイオン二次電池等を用
いた電池パックが好適に用いられている。この電池パッ
クは、電子機器の使用時には電子機器に一体的に装着さ
れており、電池蓋で覆われたりもしくは電池蓋と一体と
なったりしている。この電池パックの充電方法として
は、電池パックは本体機器に装着したままで本体機器
に設けられた接続コネクタを充電器に直接接続して充電
する方法と、電池パックを本体機器から分離して電池
パックを充電器に装着して充電する方法の2通りの方法
が主に用いられていた。
2. Description of the Related Art In recent years, electronic devices such as portable personal computers, video cameras, and mobile phones have been very popular, and a battery pack using a lithium ion secondary battery or the like as a power source has been suitably used. When the electronic device is used, the battery pack is integrally mounted on the electronic device, and is covered with the battery cover or integrated with the battery cover. The battery pack can be charged by connecting the connector provided on the main unit directly to the charger while the battery pack is attached to the main unit, or by separating the battery pack from the main unit and charging the battery. Two methods of charging a pack by attaching it to a charger have been mainly used.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上記従
来の構成では、の充電方法を用いている電池パックに
おいては、電池パックはその本体機器の専用品を用いね
ばならないという問題点があった。言い換えると、本体
機器を通じて充電を行っているため、その本体機器で行
った充電制御に沿った電池パックしか用いられず、新た
な電池系が出たり、電池パックで必要な電圧値、電流値
が変化した際などは、その有用な電池パックを用いるこ
とをみすみす逃すか、本体機器毎交換するしか方法がな
いという問題点があった。またの充電方法を用いてい
る電池パックにおいては、充電しながら本体機器を動作
することができないため、充電の待ち時間が生じるか、
もしくは予備の高価な電池を用意する必要があるという
問題点があった。
However, in the above-mentioned conventional configuration, in the battery pack using the charging method described above, there is a problem that the battery pack must use a dedicated product of the main body device. In other words, since charging is performed through the main device, only the battery pack that is in accordance with the charging control performed by the main device is used, and a new battery system appears or the voltage and current values required for the battery pack are reduced. When it changes, there is a problem that the only way to use the useful battery pack is to escape or to replace the main unit. In a battery pack using the charging method, since the main device cannot operate while charging, a charging wait time occurs,
Alternatively, there is a problem that a spare expensive battery needs to be prepared.

【0004】また一方で、ポータブルゲーム機、カセッ
トステレオの一部等は、一次電池のみで動作するため、
充電再利用可能な二次電池を使用することができず不経
済であり、予備の一次電池を持っていなければ必要時に
使用できなくなる可能性があるという問題点があった。
On the other hand, a portable game machine, a part of a cassette stereo, and the like operate on only a primary battery.
There is a problem in that it is uneconomical to use a rechargeable secondary battery, and there is a possibility that the secondary battery cannot be used when needed without a spare primary battery.

【0005】本発明は、このような従来の問題点を解決
するものであり、本体機器に対して着脱自在な電池パッ
クに外部電力入力端子を備えることにより、電池パック
を本体機器に装着していてもはずしていても電池パック
自体に充電を行うことができる電池パック及び電源シス
テムを提供することを目的とする。
The present invention solves such a conventional problem. The battery pack is detachably attached to the main body device, and the battery pack is mounted on the main body device by providing an external power input terminal. It is an object to provide a battery pack and a power supply system that can charge the battery pack itself even when the battery pack is removed.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
に本発明の電池パックは、二次電池と、前記二次電池か
らの電力を接続された電子機器に供給する出力端子とを
備え、それらをパック用ケースに収納した電池パックで
あって、商用電源から充電器を通じて電力供給を受ける
ための外部電力入力端子を備えた構成としている。
In order to achieve the above object, a battery pack according to the present invention comprises a secondary battery and an output terminal for supplying power from the secondary battery to a connected electronic device, A battery pack in which they are housed in a pack case, which has an external power input terminal for receiving power supply from a commercial power supply through a charger.

【0007】これにより、本体機器に装着したままであ
るにも関わらず、本体機器を介さずに電池パック単体に
対して電力供給を行うことができるので、他の電池系の
電池パックと交換したりすることも可能となる。また、
1本または複数の一次電池を用いて動作する電子機器に
対しても、電池パック自体をその電池収納部に収まる形
状に形成すれば、一次電池と互換性を保った状態で一次
電池利用の電子機器に対しても経済的な二次電池を用い
た電池パックを利用することができる。
[0007] As a result, power can be supplied to the battery pack alone without the intervention of the main unit, even though the battery pack is still attached to the main unit. It is also possible to do. Also,
For an electronic device that operates using one or a plurality of primary batteries, if the battery pack itself is formed in a shape that fits in its battery housing, an electronic device using the primary battery can be used while maintaining compatibility with the primary battery. A battery pack using an economical secondary battery can also be used for equipment.

【0008】また、本発明の電池パックは、商用電源か
ら充電器を通じて電池パックに電力供給を受けている際
に、二次電池の充電と、接続された電子機器への電力供
給を共に行う構成としている。
The battery pack of the present invention is configured to simultaneously charge a secondary battery and supply power to a connected electronic device when power is supplied to the battery pack from a commercial power supply via a charger. And

【0009】これにより、本体機器を使用しながら、内
蔵の二次電池の充電を実行することができる。前述の一
次電池利用の電子機器に対しても同様のことが言えるの
で、予備電池がないため使用できなくなる、もしくはデ
ータの消滅を招く等の不具合なく、継続的に使用可能に
なるという効果も有する。
Thus, the built-in secondary battery can be charged while using the main device. The same can be said for the above-described electronic device using a primary battery, and therefore, there is also an effect that the electronic device using the primary battery cannot be used because there is no spare battery, or the device can be continuously used without any trouble such as loss of data. .

【0010】[0010]

【発明の実施の形態】以下、本発明の実施の形態につい
て図1〜図4を参照して詳細に説明する。図1〜図4に
おいて、構造的・電気的な違いはあるものの、同一のも
のを示している際には、同一の番号を付与している。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to FIGS. 1 to 4, although there are structural and electrical differences, the same components are denoted by the same reference numerals.

【0011】図1は、本発明をポータブルゲーム機に適
用した模式図である。図1において、1は商用交流電源
(商用電源)、2は一次電池を2個用いて動作する電子
機器であるポータブルゲーム機である。3は本発明に係
る電池パックであり、図示しない二次電池を内蔵してお
り、ポータブルゲーム機2の電池収納部10に収まる形
状のパック用ケースに収納されており、ポータブルゲー
ム機2の電源端子と合致する出力端子を有している。ま
た、電池パック3は、外部電力入力端子4を備えてい
る。5は電池収納部10に電池パック3を収納した後
に、安全に保持するための電池蓋である。6は充電器で
あり、本実施の形態においては、AC/DC変換機能を
備えたDC出力アダプターとしており、商用交流電源に
よるAC入力をAC/DC変換してプラグ11を介して
電池パック3にDC出力している。なお、AC/DC変
換機能を電池パック3側に持たせ、充電器6は単なるA
C出力アダプターとしても同様のことができることは言
うまでもない。
FIG. 1 is a schematic diagram in which the present invention is applied to a portable game machine. In FIG. 1, reference numeral 1 denotes a commercial AC power supply (commercial power supply), and reference numeral 2 denotes a portable game machine which is an electronic device that operates using two primary batteries. Reference numeral 3 denotes a battery pack according to the present invention, which has a built-in secondary battery (not shown) and is housed in a pack case shaped to fit in the battery housing section 10 of the portable game machine 2. It has an output terminal that matches the terminal. The battery pack 3 has an external power input terminal 4. Reference numeral 5 denotes a battery cover for securely holding the battery pack 3 after the battery pack 3 is stored in the battery storage unit 10. Reference numeral 6 denotes a charger, which in the present embodiment is a DC output adapter having an AC / DC conversion function. DC output. The battery pack 3 has an AC / DC conversion function, and the charger 6 is a simple A / DC converter.
It goes without saying that the same can be done with a C output adapter.

【0012】図2は、電池パック3をポータブルゲーム
機2に収納し、電池蓋5を被せた状態の模式図である。
同図に示すように、電池パック3の外部電力入力端子4
を露出させプラグ11の接続の簡易な状態としても良い
し、防水・防塵のために開閉式の蓋を設けて、通常は外
部電力入力端子4を覆い露出をなくしても良い。
FIG. 2 is a schematic diagram showing a state where the battery pack 3 is stored in the portable game machine 2 and the battery cover 5 is covered.
As shown in the figure, the external power input terminal 4 of the battery pack 3
May be exposed to make the connection of the plug 11 simple. Alternatively, an openable lid may be provided for waterproofing and dustproofing, and the external power input terminal 4 is usually covered to eliminate the exposure.

【0013】以上の構成による本発明の動作を図3、図
4の回路図を用いて説明する。図3は、電池パック3の
外部電力入力端子4にプラグ11が接続されていない状
態、すなわち通常の電池パック3内蔵の二次電池12か
らの電力供給によりポータブルゲーム機2が動作してい
る場合の回路図である。同図に示すように単純な閉回路
が構成されており、二次電池12からポータブルゲーム
機2に電力供給されている。外部電力入力端子4に設け
られている接点A、Bは何れとも接続されていない。接
点Cは、二次電池12につながる接点と接続されてお
り、上述の閉回路を形成している。
The operation of the present invention having the above configuration will be described with reference to the circuit diagrams shown in FIGS. FIG. 3 shows a state in which the plug 11 is not connected to the external power input terminal 4 of the battery pack 3, that is, a case where the portable game machine 2 is operated by power supply from the secondary battery 12 built in the normal battery pack 3. FIG. As shown in the figure, a simple closed circuit is configured, and power is supplied from the secondary battery 12 to the portable game machine 2. The contacts A and B provided at the external power input terminal 4 are not connected to any of them. The contact C is connected to a contact connected to the secondary battery 12 and forms the above-described closed circuit.

【0014】次に図4に、電池パック3の外部電力入力
端子4にプラグ11を挿入している場合の回路図を示
す。プラグ11を挿入することで、機械的に接点Dを押
圧することにより接点Cが移動しており、これにより接
点Cは接続されない状態となる。また接点A、Bは充電
器6と接続されて2つの閉回路を形成している。1つ目
の閉回路は、充電器6→接点B→二次電池12→接点A
→充電器6の順に電流が流れ、二次電池12の充電を行
うことができる。また2つ目の閉回路は、充電器6→接
点D→ポータブルゲーム機2→接点A→充電器6の順に
電流が流れ、充電器6から二次電池12を充電している
間にも関わらず、ポータブルゲーム機2を使用すること
ができる。
Next, FIG. 4 shows a circuit diagram when the plug 11 is inserted into the external power input terminal 4 of the battery pack 3. When the plug 11 is inserted, the contact C is moved by mechanically pressing the contact D, whereby the contact C is not connected. The contacts A and B are connected to the charger 6 to form two closed circuits. The first closed circuit is charger 6 → contact B → rechargeable battery 12 → contact A
→ Current flows in the order of the charger 6, and the secondary battery 12 can be charged. In addition, the second closed circuit is performed while a current flows in the order of the charger 6 → the contact D → the portable game machine 2 → the contact A → the charger 6 and the secondary battery 12 is being charged from the charger 6. Instead, the portable game machine 2 can be used.

【0015】AC/DC変換機能と充電制御機能は、電
池パック3、充電器6いずれで行ってもよい。電池パッ
ク3で行うことにした場合には、電池パック3を異なる
電池系のものに交換した場合等においても、本体機器2
及び充電器6は交換する必要がないというメリットを有
し、充電器6で行うことにした場合には、電池パック3
の低コスト化・省スペース化を計ることができるという
メリットを有する。
The AC / DC conversion function and the charge control function may be performed by either the battery pack 3 or the charger 6. When the operation is performed using the battery pack 3, even when the battery pack 3 is replaced with a different battery type, the main device 2
And that the charger 6 does not need to be replaced.
This has the advantage that cost and space can be reduced.

【0016】このように商用電源1と、商用電源1と接
続される充電器6と、二次電池12と二次電池12から
の電源を接続された電子機器2に供給する出力端子とを
備え、それらをパック用ケースに収納し、かつ商用電源
1から充電器6を通じて電力供給を受けるための外部電
力入力端子4を備えた電池パック3と、電池パック3と
電気的に接続された電子機器2とからなる電源システム
を構築することにより、電子機器2を使用者にとって使
い勝手の良い状態で使用して頂くことが可能となる。
As described above, the commercial power supply 1, the charger 6 connected to the commercial power supply 1, and the output terminal for supplying the secondary battery 12 and the power from the secondary battery 12 to the connected electronic equipment 2 are provided. And a battery pack 3 having an external power input terminal 4 for receiving them from the commercial power supply 1 through the charger 6 and an electronic device electrically connected to the battery pack 3 By constructing the power supply system including the electronic device 2, the user can use the electronic device 2 in a state that is convenient for the user.

【0017】特に電子機器2が一次電池利用を前提とし
て作られたものであれば、電池パック3を電池収納部1
0に収納できる構成とすることにより、屋内での使用の
際などは常時商用電源による使用も可能となり、使い方
の選択肢を多様化することができ、さらに使い勝手の良
いものとなることは言うまでもない。
In particular, if the electronic device 2 is made on the assumption that a primary battery is used, the battery pack 3 is
By adopting a configuration that can be stored in a room, it is possible to always use a commercial power supply for indoor use and the like, and it is needless to say that the options for use can be diversified, and the device is more convenient to use.

【0018】[0018]

【発明の効果】上記実施の形態から明らかなように、本
発明によれば、二次電池と、前記二次電池からの電力を
接続された電子機器に供給する出力端子とを備え、それ
らをパック用ケースに収納した電池パックであって、商
用電源から充電器を通じて電力供給を受けるための外部
電力入力端子を備えた構成とすることで、本体機器に装
着したままであるにも関わらず、本体機器を介さずに電
池パック単体に対して電力供給を行うことができるの
で、他の電池系の電池パックと交換したりすることも可
能となる。また、1本または複数の一次電池を用いて動
作する電子機器に対しても、電池パック自体をその電池
収納部に収まる形状に作成すれば、一次電池と互換性を
保った状態で一次電池利用の電子機器に対しても経済的
な二次電池を用いた電池パックを利用することができ
る。
As is apparent from the above embodiment, according to the present invention, a secondary battery and an output terminal for supplying power from the secondary battery to a connected electronic device are provided. A battery pack housed in a pack case, which has an external power input terminal for receiving power supply from a commercial power supply through a charger, so that the battery pack remains attached to the main device. Since power can be supplied to the battery pack alone without going through the main device, the battery pack can be replaced with another battery pack of another battery system. Also, for an electronic device that operates using one or more primary batteries, if the battery pack itself is formed in a shape that fits in the battery storage section, the primary battery can be used while maintaining compatibility with the primary battery. A battery pack using an economical secondary battery can be used for the electronic device.

【0019】また、本発明の電池パックは、商用電源か
ら充電器を通じて電池パックに電力供給を受けている際
に、二次電池の充電と、接続された電子機器への電源供
給を共に行う構成とすることで、本体機器を使用しなが
ら、内蔵の二次電池の充電を実行することができる。前
述の一次電池利用の電子機器に対しても同様のことが言
えるので、予備電池がないため使用できなくなる、もし
くはデータの消滅を招く等の不具合なく、継続的に使用
可能になるという効果も有する。
In the battery pack of the present invention, when power is supplied to the battery pack from a commercial power supply through a charger, both the charging of the secondary battery and the supply of power to the connected electronic equipment are performed. By doing so, the built-in secondary battery can be charged while using the main device. The same can be said for the above-described electronic device using a primary battery, and therefore, there is also an effect that the electronic device using the primary battery cannot be used because there is no spare battery, or the device can be continuously used without any trouble such as loss of data. .

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明をポータブルゲーム機に適用した模式図FIG. 1 is a schematic diagram showing the invention applied to a portable game machine.

【図2】電池パック3を収納し、電池蓋5を被せた状態
の模式図
FIG. 2 is a schematic diagram showing a state in which a battery pack 3 is housed and a battery cover 5 is covered.

【図3】二次電池による電力供給時の回路図FIG. 3 is a circuit diagram when power is supplied from a secondary battery.

【図4】商用電源による電力供給時の回路図FIG. 4 is a circuit diagram when power is supplied from a commercial power supply.

【符号の説明】[Explanation of symbols]

1 商用交流電源(商用電源) 2 ポータブルゲーム機(本体機器) 3 電池パック 4 外部電力入力端子 5 電池蓋 6 充電器 10 電池収納部 11 プラグ 12 二次電池 DESCRIPTION OF SYMBOLS 1 Commercial AC power supply (commercial power supply) 2 Portable game machine (main device) 3 Battery pack 4 External power input terminal 5 Battery lid 6 Charger 10 Battery storage unit 11 Plug 12 Secondary battery

───────────────────────────────────────────────────── フロントページの続き (72)発明者 牧野 久雄 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 山森 章 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Fターム(参考) 5G003 AA01 BA01 DA04 DA18 FA03 5H030 AA03 AA04 AS06 AS11 BB01 BB21 DD20  ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisao Makino 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Terms (reference) 5G003 AA01 BA01 DA04 DA18 FA03 5H030 AA03 AA04 AS06 AS11 BB01 BB21 DD20

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 二次電池と、前記二次電池からの電力を
電子機器に供給する出力端子と、商用電源から充電器を
通じて電力供給を受けるための外部電力入力端子とを備
え、それらをパック用ケースに収納したことを特徴とす
る電池パック。
1. A rechargeable battery comprising: a secondary battery; an output terminal for supplying power from the secondary battery to an electronic device; and an external power input terminal for receiving power supply from a commercial power supply through a charger. A battery pack that is housed in a case.
【請求項2】 商用電源から充電器を通じて電池パック
に電力供給を受けている際に、二次電池の充電と、接続
された電子機器への電力供給を共に行うことを特徴とす
る請求項1記載の電池パック。
2. The method according to claim 1, wherein when power is supplied to the battery pack from a commercial power supply through a charger, both charging of the secondary battery and power supply to the connected electronic device are performed. The battery pack as described.
【請求項3】 商用電源と、前記商用電源と接続される
充電器と、二次電池と前記二次電池からの電力を電子機
器に供給する出力端子と前記商用電源から前記充電器を
通じて電力供給を受けるための外部電力入力端子とを備
え、それらをパック用ケースに収納した電池パックと、
前記電池パックと電気的に接続された電子機器とからな
る電源システム。
3. A commercial power supply, a charger connected to the commercial power supply, an output terminal for supplying a secondary battery and power from the secondary battery to an electronic device, and power supply from the commercial power supply through the charger. A battery pack comprising an external power input terminal for receiving the
A power supply system comprising the battery pack and electronic devices electrically connected.
JP26011399A 1999-09-14 1999-09-14 Battery pack and power supply system using it Pending JP2001085069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26011399A JP2001085069A (en) 1999-09-14 1999-09-14 Battery pack and power supply system using it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26011399A JP2001085069A (en) 1999-09-14 1999-09-14 Battery pack and power supply system using it

Publications (1)

Publication Number Publication Date
JP2001085069A true JP2001085069A (en) 2001-03-30

Family

ID=17343474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26011399A Pending JP2001085069A (en) 1999-09-14 1999-09-14 Battery pack and power supply system using it

Country Status (1)

Country Link
JP (1) JP2001085069A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2419472A (en) * 2004-01-28 2006-04-26 Milwaukee Electric Tool Corp Electrical appliance with detachable battery charger
GB2410619B (en) * 2004-01-28 2008-04-16 Milwaukee Electric Tool Corp Radio with a removably connectable battery charger
US7868590B2 (en) 2001-11-09 2011-01-11 Milwaukee Electric Tool Corporation Electrical component, such as a radio, MP3 player, audio component, battery charger, radio/charger, MP3 player/radio, MP3 player/charger or MP3 player/radio/charger, having a selectively connectable battery charger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7868590B2 (en) 2001-11-09 2011-01-11 Milwaukee Electric Tool Corporation Electrical component, such as a radio, MP3 player, audio component, battery charger, radio/charger, MP3 player/radio, MP3 player/charger or MP3 player/radio/charger, having a selectively connectable battery charger
US8203307B2 (en) 2001-11-09 2012-06-19 Milwaukee Electric Tool Corporation Audio and charging system with audio device, power tool battery, and external battery charger
GB2419472A (en) * 2004-01-28 2006-04-26 Milwaukee Electric Tool Corp Electrical appliance with detachable battery charger
GB2410619B (en) * 2004-01-28 2008-04-16 Milwaukee Electric Tool Corp Radio with a removably connectable battery charger

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