JPH09190938A - Non-contact type battery charger - Google Patents
Non-contact type battery chargerInfo
- Publication number
- JPH09190938A JPH09190938A JP8001466A JP146696A JPH09190938A JP H09190938 A JPH09190938 A JP H09190938A JP 8001466 A JP8001466 A JP 8001466A JP 146696 A JP146696 A JP 146696A JP H09190938 A JPH09190938 A JP H09190938A
- Authority
- JP
- Japan
- Prior art keywords
- secondary battery
- charging
- charged
- receiving coil
- contact type
- 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
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
-
- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00308—Overvoltage protection
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、コードレス電話
機、携帯用機器等の電源として利用される充電式電池
を、電磁誘電作用により充電部から被充電部へ金属接点
を介さず非接触で電力を電送するための電磁誘導コイル
を使用した充電器であって、コードレス電話機、携帯用
機器等に組み込まれている電磁誘導装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rechargeable battery used as a power source for a cordless telephone, a portable device, etc., which can be contactlessly supplied with electric power from a charging section to a charging section without a metal contact. The present invention relates to a charger that uses an electromagnetic induction coil for electric transmission, and relates to an electromagnetic induction device incorporated in a cordless telephone, a portable device, or the like.
【0002】[0002]
【従来の技術】コードレス電話、PHS、携帯電話、ト
ランシーバー等、充電可能な2次電池を電源とする電子
機器、特に携帯用機器は小形、薄型、軽量化の要求を受
ける。また、一方では動作時間をできるだけ長くするた
めの改善が望まれている。2. Description of the Related Art Electronic devices such as cordless phones, PHS, mobile phones, and transceivers that use a rechargeable secondary battery as a power source, especially portable devices, are required to be small, thin, and lightweight. On the other hand, there is a demand for improvement to make the operation time as long as possible.
【0003】これらの相反する要求を満足するため、電
子機器に使用される2次電池には小形、軽量であり長寿
命のLiイオン電池等が採用されている。しかし、これ
らの電池は温度上昇等に起因する発煙等の問題があり安
全性を確保するため、充電器や電源回路を設計する場合
には過放電や過充電に充分な注意を払わなければならな
い。In order to satisfy these contradictory requirements, a small-sized, lightweight, long-life Li-ion battery or the like is adopted as a secondary battery used in electronic equipment. However, these batteries have problems such as smoke generation due to temperature rise, etc., and in order to ensure safety, when designing a charger or power supply circuit, it is necessary to pay sufficient attention to overdischarging and overcharging. .
【0004】特にLiイオン電池はその性能を充分に発
揮させるため、充電電圧の電圧公差を±20mV/ce
l以内に設定しなければならないばかりか、過電圧が加
わった場合には金属Liが析出するという問題があるた
め、設計には精度の高い定電流、定電圧制御が必要であ
る。しかし、2次電池を充電する充電装置は電子機器と
充電装置の間に電極による接点が存在するため、その接
触抵抗によって2次電池にかかる充電電圧が変化し、電
池両端の電圧情報が充電装置に正確に伝達されず、接触
抵抗による電圧降下のばらつきを考慮しなければならな
いため、電池両端に充分な充電電圧をかけることができ
ず、公称充電容量の60乃至70%しか充電することが
できなかった。In particular, in order to make full use of the performance of the Li-ion battery, the voltage tolerance of the charging voltage is ± 20 mV / ce.
In addition to having to be set within l, there is a problem that metal Li is deposited when an overvoltage is applied, so that highly accurate constant current and constant voltage control is required for design. However, since the charging device that charges the secondary battery has a contact point by an electrode between the electronic device and the charging device, the charging voltage applied to the secondary battery changes due to the contact resistance, and the voltage information at both ends of the battery is the charging device. However, it is not possible to apply a sufficient charging voltage to both ends of the battery and to charge only 60 to 70% of the nominal charging capacity because it is not accurately transmitted to the battery and the variation in the voltage drop due to the contact resistance must be taken into consideration. There wasn't.
【0005】そこで、充電装置と電子機器の間に接点が
存在せず、安定した充電電圧を2次電池に供給すること
ができる電磁誘導を利用した非接触型充電装置が前記2
次電池の充電に使われるようになった。Therefore, there is no contact between the charging device and the electronic device, and the non-contact type charging device utilizing electromagnetic induction capable of supplying a stable charging voltage to the secondary battery is described in the above 2
It has come to be used to charge the next battery.
【0006】しかし、さらなる小形、薄型、軽量化の要
求が電子機器にたいして改善が望まれている。However, there is a demand for further miniaturization, thinning and weight saving of electronic equipment.
【0007】[0007]
【発明が解決しようとする課題】コードレス電話、PH
S、携帯電話、トランシーバー等、充電可能な2次電池
を電源とする電子機器、特に携帯用機器にたいする市場
要求は小形、薄型、軽量であって、かつ動作時間が長い
ことである。[Problems to be solved by the invention] Cordless telephone, PH
The market demand for electronic devices such as S, mobile phones, and transceivers that use a rechargeable secondary battery as a power source, particularly portable devices, is that they are small, thin, lightweight, and have a long operating time.
【0008】これらの要求に対応するため高効率の2次
電池であるNi水素電池、Liイオン電池等が採用され
てきたが、電池の性能を充分生かすため充電装置の更な
る改善が望まれている。In order to meet these requirements, Ni hydrogen batteries, Li ion batteries, etc., which are highly efficient secondary batteries, have been adopted, but further improvement of the charging device is desired in order to make full use of the battery performance. There is.
【0009】本発明は、充電可能な2次電池を電源とす
る電子機器において小形、薄型、かつ軽量であり信頼性
が高い電子機器構築することを可能とし、さらに2次電
池の性能を充分発揮させることのできる非接触型充電装
置を提供することを目的とする。The present invention makes it possible to construct a small, thin and lightweight electronic device having high reliability in an electronic device using a rechargeable secondary battery as a power source, and further, to fully exhibit the performance of the secondary battery. An object of the present invention is to provide a non-contact type charging device that can be operated.
【0010】[0010]
【課題を解決するための手段】上記目的を達成するため
に本発明は、磁気誘導を利用して充電側から被充電側へ
エネルギー伝送する非接触型充電装置を介して充電され
る充電式の2次電池と前記被充電側の回路および受電コ
イルを内蔵する電子機器において、前記2次電池と前記
非接触型充電装置のうち充電側に電子機器を設置した状
態における充電側の送電コイルとの間に、前記電子機器
に内蔵され、被充電側の回路および受電コイルを構成し
た磁性材からなる基板を配置する非接触型充電装置を提
供する。In order to achieve the above object, the present invention provides a rechargeable battery that is charged through a non-contact type charging device that uses magnetic induction to transfer energy from a charging side to a charged side. In an electronic device including a secondary battery, the circuit to be charged, and a power receiving coil, the secondary battery and the power transmitting coil on the charging side in the state where the electronic device is installed on the charging side of the non-contact type charging device Provided is a non-contact type charging device in which a substrate made of a magnetic material, which is built in the electronic device and which constitutes a circuit to be charged and a power receiving coil, is arranged.
【0011】さらに本発明は、被充電側の回路および受
電コイルを構成した磁性材からなる前記基板が、熱硬化
性または熱可塑性の樹脂にフェライト粉末またはアモル
ファス磁性粉末を混合し成型した板からなることによっ
て、さらに非接触型充電装置の被充電側を内蔵する電子
機器の信頼性を上げることができる。Further, according to the present invention, the substrate made of a magnetic material which constitutes a circuit on the side to be charged and a power receiving coil is a plate formed by mixing a thermosetting or thermoplastic resin with ferrite powder or amorphous magnetic powder. As a result, it is possible to further improve the reliability of the electronic device that incorporates the charged side of the non-contact type charging device.
【0012】[0012]
【発明の実施の形態】電子機器に内蔵される非接触充電
装置の被充電側回路および受電コイルと2次電池は図1
に示すようなブロック図で示されるように、非接触充電
装置の充電側から電磁誘導によって伝送されるエネルギ
ーを受電コイル1で受け被充電側回路2を経由して2次
電池3を充電する構成となる。BEST MODE FOR CARRYING OUT THE INVENTION A circuit to be charged, a power receiving coil and a secondary battery of a non-contact charging device incorporated in an electronic device are shown in FIG.
As shown in the block diagram as shown in FIG. 2, a configuration in which energy transmitted by electromagnetic induction from the charging side of the non-contact charging device is received by the power receiving coil 1 and the secondary battery 3 is charged via the circuit 2 on the charged side Becomes
【0013】このような電子機器の構造を図2に示す。
(a)はその構造図、(b)はその断面図、(c)は基
板の概念図である。The structure of such an electronic device is shown in FIG.
(A) is the structural drawing, (b) is the sectional view, and (c) is a conceptual drawing of the substrate.
【0014】電子機器4を充電する場合(a)に示すよ
うに非接触充電装置の充電側6に電子機器4を搭載す
る。そのとき、非接触充電装置の被充電側5は非接触充
電装置の充電側6と近接するように置かれる。When the electronic device 4 is charged, the electronic device 4 is mounted on the charging side 6 of the non-contact charging device as shown in (a). At that time, the charged side 5 of the contactless charging device is placed in close proximity to the charging side 6 of the contactless charging device.
【0015】この場合、(b)の断面図に示されるよう
に、非接触充電装置の充電側6には電磁誘導により非接
触でエネルギーを伝送するための制御回路と送電コイル
9等を搭載した送電用基板8が配置され、電子機器側に
は非接触充電装置の被充電側回路2および受電コイル1
とを搭載した基板7が前記非接触でエネルギーを伝送す
るための制御回路等を搭載した送電用基板8と対向する
位置に配置されている。さらに、非接触充電装置の被充
電側回路2および受電コイルと1を搭載した基板7の背
面には2次電池3が配置されている。In this case, as shown in the sectional view of (b), the charging side 6 of the contactless charging device is equipped with a control circuit for transmitting energy in a contactless manner by electromagnetic induction, a power transmission coil 9 and the like. The power transmission substrate 8 is arranged, and the circuit 2 on the charged side of the contactless charging device and the power receiving coil 1 are provided on the electronic device side.
The board 7 on which is mounted is disposed at a position facing the power transmission board 8 on which the control circuit for transmitting energy in a non-contact manner is mounted. Further, the secondary battery 3 is arranged on the back surface of the substrate 7 on which the circuit 2 on the charged side and the power receiving coil 1 of the contactless charging device are mounted.
【0016】非接触充電装置の被充電側回路2および受
電コイル1とを搭載した基板7は(c)の基板概念図に
示されているように受電コイル1が搭載される。受電コ
イル1は薄型の空芯コイルを基板7に装着したものであ
っても良く、基板7上に導電体をスパイラル状に印刷し
たものであっても良いが、部品や受電コイル1を搭載し
た状態で表面実装技術等を用いできるだけ薄く作成する
ことにより、受電コイル1を前記制御回路等を搭載した
送電用基板8と近接させることが可能となり、かつ背面
に2次電池3を配置しても電子機器4の薄型という特徴
を損ねることがない。The power receiving coil 1 is mounted on the substrate 7 on which the circuit 2 to be charged and the power receiving coil 1 of the contactless charging device are mounted as shown in the conceptual diagram of the substrate in (c). The power receiving coil 1 may be a thin air-core coil mounted on the substrate 7, or may be a conductor printed on the substrate 7 in a spiral shape, but the components and the power receiving coil 1 are mounted. If the power receiving coil 1 is made as thin as possible using the surface mounting technique or the like in this state, the power receiving coil 1 can be brought close to the power transmitting substrate 8 on which the control circuit or the like is mounted, and even if the secondary battery 3 is arranged on the back surface. The thinness of the electronic device 4 is not impaired.
【0017】さらに、受電コイル1とを搭載した基板7
を磁性材によって構成することによって充電側と2次電
池をシールドすることによって、充電側より伝送される
エネルギーが基板背面に位置する2次電池3に達するこ
とによって発生する渦電流損をなくすことが可能とな
り、さらには渦電流による2次電池3の加熱に起因する
事故を、より容易に防止することが可能となり信頼性の
向上につながる。Further, the substrate 7 on which the power receiving coil 1 is mounted
By shielding the charging side and the secondary battery by using a magnetic material, the eddy current loss generated when the energy transmitted from the charging side reaches the secondary battery 3 located on the back surface of the substrate can be eliminated. This makes it possible to prevent accidents caused by heating of the secondary battery 3 due to eddy currents more easily, leading to improved reliability.
【0018】ここで、受電コイル1とを搭載した基板7
を、熱硬化性または熱可塑性の樹脂にフェライト粉末ま
たはアモルファス磁性粉末を混合し成型した板を使用す
れば、容易に成型、加工することが可能であり絶縁性も
良いため、製造性も良く信頼性も高い。Here, the substrate 7 on which the power receiving coil 1 is mounted
If a plate formed by mixing ferrite powder or amorphous magnetic powder with a thermosetting or thermoplastic resin is used, it can be easily molded and processed, and it has good insulating properties, so it is also reliable with good manufacturability. It is also very popular.
【0019】基板7の比透磁率が高いほど受電コイル1
で受けるエネルギーは大きくなり、フェライト粉末を使
用すれば、基板7の比透磁率を10程度まですることが
可能となり、アモルファス磁性粉末を使用すれば80程
度まで上げることが可能となる。The higher the relative magnetic permeability of the substrate 7, the higher the power receiving coil 1
The energy received by is large, and if ferrite powder is used, the relative permeability of the substrate 7 can be increased to about 10, and if amorphous magnetic powder is used, it can be increased to about 80.
【0020】[0020]
【発明の効果】本発明により、充電可能な2次電池を電
源とする電子機器において小形、薄型、かつ軽量であり
信頼性が高い電子機器構築することを可能とし、さらに
2次電池の性能を充分発揮させることのできる非接触型
充電装置を提供することができる。Industrial Applicability According to the present invention, it is possible to construct a small, thin, lightweight, and highly reliable electronic device using a rechargeable secondary battery as a power source, and further improve the performance of the secondary battery. It is possible to provide a non-contact type charging device that can be sufficiently exerted.
【図1】非接触型充電装置における被充電側のブロック
図FIG. 1 is a block diagram of a non-contact type charging device on a charged side.
【図2】非接触型充電装置の被充電側を内蔵した電子機
器の構造図FIG. 2 is a structural diagram of an electronic device in which a non-contact type charging device includes a charged side.
1 受電コイル 3 2次電池 7 非接触充電装置の被充電側回路2および受電コ
イルと1を搭載した基板1 Receiving coil 3 Secondary battery 7 Substrate on which circuit 2 to be charged of non-contact charging device and receiving coil and 1 are mounted
Claims (2)
エネルギー伝送する非接触型充電装置を介して充電され
る充電式の2次電池と前記被充電側の回路および受電コ
イルを内蔵する電子機器において、 前記電子機器に内蔵され、被充電側の回路および受電コ
イルを構成した磁性材からなる基板を、前記2次電池
と、 前記非接触型充電装置に電子機器を設置した状態におけ
る充電側の送電コイルとの間に、配置したことを特徴と
する非接触型充電装置。1. A rechargeable secondary battery charged via a non-contact type charging device that transfers energy from a charging side to a charged side by using electromagnetic induction, a circuit on the charged side and a power receiving coil. In a state in which an electronic device is installed in the secondary battery and the non-contact type charging device, a substrate that is built in the electronic device and is made of a magnetic material that forms a circuit on the charged side and a power receiving coil is provided. A non-contact type charging device, which is arranged between the charging side power transmission coil and the power transmission coil.
た磁性材からなる前記基板が、熱硬化性または熱可塑性
の樹脂にフェライト粉末またはアモルファス磁性粉末を
混合し成型した板からなることを特徴とする請求項1記
載の非接触型充電装置。2. The circuit board, which is made of a magnetic material and constitutes a circuit on the side to be charged and a power receiving coil, is made of a plate formed by mixing ferrite powder or amorphous magnetic powder with a thermosetting or thermoplastic resin. The non-contact type charging device according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8001466A JPH09190938A (en) | 1996-01-09 | 1996-01-09 | Non-contact type battery charger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8001466A JPH09190938A (en) | 1996-01-09 | 1996-01-09 | Non-contact type battery charger |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09190938A true JPH09190938A (en) | 1997-07-22 |
Family
ID=11502249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8001466A Pending JPH09190938A (en) | 1996-01-09 | 1996-01-09 | Non-contact type battery charger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09190938A (en) |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
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