WO2019044567A1 - Secondary battery unit - Google Patents

Secondary battery unit Download PDF

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Publication number
WO2019044567A1
WO2019044567A1 PCT/JP2018/030707 JP2018030707W WO2019044567A1 WO 2019044567 A1 WO2019044567 A1 WO 2019044567A1 JP 2018030707 W JP2018030707 W JP 2018030707W WO 2019044567 A1 WO2019044567 A1 WO 2019044567A1
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WO
WIPO (PCT)
Prior art keywords
secondary battery
electrode terminal
case
battery unit
coil
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PCT/JP2018/030707
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French (fr)
Japanese (ja)
Inventor
小山　和宏
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ノバルス株式会社
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Priority to JP2019539377A priority Critical patent/JPWO2019044567A1/en
Publication of WO2019044567A1 publication Critical patent/WO2019044567A1/en

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    • 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a secondary battery unit.
  • Standardized primary batteries such as single and AA type dry batteries are often used as battery-powered devices. If the battery has reached the end of its life, battery replacement is required. In other words, remove the old battery from the battery drive and install a new battery. In the case of a secondary battery, the discharged secondary battery is removed from the device, set in a charger, charged, and removed from the charger after charging is completed, and the load on the device increases.
  • the conventional dry cell has a limited usable time, and when the end of its life is reached, it is necessary to take it away from the mounted device body and replace it with a new dry cell. Moreover, even rechargeable batteries need to be removed from the device body and attached to the charger at the time of charging, and in any case the burden of battery replacement can not be avoided.
  • An object is to provide a secondary battery unit that can reduce the burden of battery replacement.
  • the secondary battery unit includes positive and negative terminals connected to an external load device, a secondary battery connected to the positive and negative terminals, and alternating magnetic flux from an external primary coil.
  • a plurality of secondary coils for generating an induced current, and a plurality of charging circuits for rectifying and smoothing the output of the secondary coil to charge the secondary battery are provided.
  • the plurality of charging circuits are individually provided in the plurality of secondary coils and connected in parallel to the secondary battery.
  • FIG. 1 is a perspective view showing the appearance of a secondary battery unit according to the present embodiment.
  • FIG. 2 is a longitudinal sectional view of the secondary battery unit of FIG.
  • FIG. 3 is an equivalent circuit diagram of a charging circuit provided in the secondary battery unit of FIG.
  • FIG. 4A is a perspective view showing the configuration of the secondary coil of FIG.
  • FIG. 4B is a developed view showing the configuration of the secondary coil of FIG. 3.
  • FIG. 5 is an equivalent circuit diagram showing another configuration of the charging circuit of FIG.
  • FIG. 1 is a perspective view showing the appearance of a secondary battery unit 10 according to the present embodiment.
  • FIG. 2 is a longitudinal sectional view of the secondary battery unit 10 of FIG.
  • the secondary battery unit 10 which concerns on this embodiment has the case 11 of the bottomed cylindrical shape comprised by the dimension according to the battery
  • the case 11 is comprised of a cylinder of height and diameter according to the AA standard.
  • the positive electrode terminal 13 and the negative electrode terminal 15 are mounted on the front and rear end surfaces of the cylindrical case 11 according to the battery standard.
  • a single secondary battery 21 of AAA standard is accommodated inside the case 11.
  • the secondary battery 21 may be a nickel hydrogen battery, a nickel cadmium battery, a lithium ion secondary battery, or any other type.
  • the positive electrode terminal 23 and the negative electrode terminal 25 of the secondary battery 21 are electrically connected to the positive electrode terminal 13 and the negative electrode terminal 15 on the front and rear end faces of the case 11 respectively.
  • Alternative specifications are possible for regular AA primary batteries or secondary batteries, that is, they are mounted alone or in series or in parallel with other AA batteries in the battery box of an external load device driven by AA batteries. be able to.
  • the secondary battery unit may be formed in a shape and a size in accordance with other battery standards.
  • the central axis of the secondary battery 21 is radially offset with respect to the central axis of the cylindrical case 11. This offset secures a slight space between the case 11 and the secondary battery 21. In this space, a substrate 30 on which a charging circuit of the secondary battery 21 is formed is installed.
  • a plurality of secondary coils 101, 201, and 301 are provided.
  • the plurality of secondary coils 101, 201, and 301 form a plurality of parallel resonance circuits together with the resonance capacitors 103, 203, and 303 connected in parallel.
  • the resonant frequencies of these parallel resonant circuits are set equal to one another.
  • the secondary coils 101, 201, 301 induce a current by alternating magnetic flux from an external primary coil.
  • the primary coil is provided in the battery box of the external load device, and it is possible to charge the secondary battery 21 of the secondary battery unit 10 in a state of being attached to the battery box.
  • the secondary coils 101, 201, and 301 will be described later.
  • the secondary coil 101 and the resonance capacitor 103 constitute a parallel resonance circuit.
  • a rectifying circuit comprising a rectifying diode 105 for rectifying an induced current generated in the secondary coil 101 and a smoothing capacitor 107 for smoothing the current rectified by the rectifying diode 105.
  • the secondary battery 21 is charged by the current rectified by the rectification circuit.
  • the parallel resonant circuit composed of the secondary coil 201 and the resonant capacitor 203 is connected to a rectifier circuit composed of the rectifying diode 205 and the smoothing capacitor 207, and the secondary coil 301 and the resonant capacitor 303
  • the parallel resonant circuit is connected to a rectifying circuit composed of a rectifying diode 305 and a smoothing capacitor 307.
  • a plurality of parallel resonant circuits and rectifier circuits are connected in parallel to the secondary battery 21.
  • FIG. 5 the configuration in which a single rectifier circuit is provided in parallel to the secondary coils 101, 201, and 301 to share the rectifier circuit is not to be denied.
  • FIG. 4A shows a perspective view of the secondary coils 101, 201, and 301 housed in the case 11, and FIG. 4B shows a developed view of the secondary coils 101, 201, and 301.
  • the secondary coils 101, 201, and 301 are planar coils formed by forming a conductor pattern in a spiral shape on the surface of a flexible insulating substrate 100 by a plating method, an etching method, or the like.
  • the insulating substrate 100 has a length substantially equivalent to the inner dimension of the case 11 and a width substantially equivalent to the inner circumferential length of the case 11.
  • the insulating substrate 100 in which the secondary coils 101, 201, and 301 are formed is curved in a cylindrical shape, and is inserted into a gap between the inner surface of the cylindrical case 11 and the secondary battery 21 or the substrate 30. Along with that, the secondary coils 101, 201, 301 are curved along the inner circumferential surface of the case 11.
  • the secondary coils 101, 201, and 301 are identical coils in terms of size, number of turns, and winding direction, and are formed into an oval, an ellipse, or a rectangle long in the axial direction of the case 11.
  • the insulating substrate 100 in which the secondary coils 101, 201, and 301 are formed is curved in a cylindrical shape, and is inserted into the gap between the inner surface of the cylindrical case 11 and the secondary battery 21 or the substrate 30. As a result, the secondary coils 101, 201, 301 are curved along the inner circumferential surface of the case 11.
  • the number of secondary coils 101, 201, 301 is an odd number, preferably three as shown, so that the secondary coils 101, 201, 301 do not face each other on the cylindrically curved substrate 30. If there are three secondary coils 101, 201, and 301, the secondary coils 101, 201, and 301 are arranged shifted by 120 ° along the circumferential direction of the case 11. When the number of secondary coils 101, 201, and 301 is generalized to "2 n -1" (n: positive integer), the secondary coils 101, 201, and 301 are shifted by 360 ° / (2 n -1). Furthermore, each secondary coil 101, 201, 301 is formed in a range of 120 °, generally 360 ° / (2 n-1), so that the secondary coils 101, 201, 301 do not overlap with each other. Ru.
  • the secondary battery unit 10 includes the secondary coil and the charging circuit together with the secondary battery, it is possible to charge the battery while being attached to the battery box.
  • the secondary battery unit 10 is cylindrical and easy to rotate, and it is unexpected in which direction it is mounted on the battery box of the external load device. It is desirable to generate an induced current regardless of which direction the secondary battery unit 10 is attached to the battery box of the external load device, and to efficiently charge the secondary battery 21.
  • the secondary coils 101, 201, 301 are arranged along the circumferential surface, the secondary coils 101, 201, Any one of 301 overlaps, and an induced current can be generated to charge the secondary battery 21.
  • the secondary coils 101, 201, 301 can be generated. Since the rectifier circuits are individually provided individually and connected in parallel to the secondary battery 21, it is possible to combine the currents rectified separately, and efficiently without loss. The battery 21 can be charged.
  • the secondary battery 21 is interposed on the opposite side.
  • the other coils do not face the primary coil, so that the secondary coils do not cancel each other out of the flux change.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The purpose of the present invention is to provide a secondary battery unit which can decrease the burden of battery replacement. This secondary battery unit 10 is provided with a positive electrode terminal 13 and a negative electrode terminal 15 which are connected to an external load device, a secondary battery 21 which is connected to the positive electrode terminal and the negative electrode terminal, multiple secondary coils 101, 201, 301 which generate an induced current by means of the alternating magnetic flux from an external primary coil, multiple charging circuits (105, 107), (205, 207), (305, 307) for rectifying and smoothing the output of the secondary coil and charging the secondary battery. Multiple charging circuits are provided in each of the multiple secondary coils, and are connected in parallel to the secondary battery.

Description

二次電池ユニットSecondary battery unit
　本発明は二次電池ユニットに関する。 The present invention relates to a secondary battery unit.
　電池駆動機器には単１、単３型乾電池などの規格化された一次電池が用いられる事が多い。電池が寿命に達した場合、電池交換が必要とされる。つまり古い電池を電池駆動機器から取り外し、新しい電池を装着する。二次電池であれば、放電しきった二次電池を機器から取り外して、充電器にセットして充電し、充電完了後に充電器から取り外して、機器に装着するためその負担は増大する。 Standardized primary batteries such as single and AA type dry batteries are often used as battery-powered devices. If the battery has reached the end of its life, battery replacement is required. In other words, remove the old battery from the battery drive and install a new battery. In the case of a secondary battery, the discharged secondary battery is removed from the device, set in a charger, charged, and removed from the charger after charging is completed, and the load on the device increases.
　このように従来の乾電池は使用可能時間が有限であり、寿命に達すると装着されている機器本体から取り外して、新しい乾電池と交換する手間が必要とされる。また充電可能な電池でも、充電の際には機器本体から取り外して充電器に装着する必要があり、いずれにしてもその電池交換の負担は避けられない。 As described above, the conventional dry cell has a limited usable time, and when the end of its life is reached, it is necessary to take it away from the mounted device body and replace it with a new dry cell. Moreover, even rechargeable batteries need to be removed from the device body and attached to the charger at the time of charging, and in any case the burden of battery replacement can not be avoided.
　目的は、電池交換の負担を軽減し得る二次電池ユニットを提供することにある。 An object is to provide a secondary battery unit that can reduce the burden of battery replacement.
　本実施形態に係る二次電池ユニットは、外部負荷装置に対して接続される正極端子及び負極端子と、正極端子と負極端子に接続される二次電池と、外部の一次コイルからの交番磁束により誘起電流を発生させる複数の二次コイルと、二次コイルの出力を整流及び平滑して二次電池を充電するための複数の充電回路とが具備される。複数の充電回路は複数の二次コイルに個々に設けられ、二次電池に対して並列接続される。 The secondary battery unit according to the present embodiment includes positive and negative terminals connected to an external load device, a secondary battery connected to the positive and negative terminals, and alternating magnetic flux from an external primary coil. A plurality of secondary coils for generating an induced current, and a plurality of charging circuits for rectifying and smoothing the output of the secondary coil to charge the secondary battery are provided. The plurality of charging circuits are individually provided in the plurality of secondary coils and connected in parallel to the secondary battery.
図１は、本実施形態に係る二次電池ユニットの外観を示す斜視図である。FIG. 1 is a perspective view showing the appearance of a secondary battery unit according to the present embodiment. 図２は、図１の二次電池ユニットの縦断面図である。FIG. 2 is a longitudinal sectional view of the secondary battery unit of FIG. 図３は、図１の二次電池ユニットに装備される充電回路の等価回路図である。FIG. 3 is an equivalent circuit diagram of a charging circuit provided in the secondary battery unit of FIG. 図４Ａは、図３の二次コイルの構成を示す斜視図である。FIG. 4A is a perspective view showing the configuration of the secondary coil of FIG. 図４Ｂは、図３の二次コイルの構成を示す展開図である。FIG. 4B is a developed view showing the configuration of the secondary coil of FIG. 3. 図５は、図３の充電回路の他の構成を示す等価回路図である。FIG. 5 is an equivalent circuit diagram showing another configuration of the charging circuit of FIG.
　以下、図面を参照しながら本実施形態に係る二次電池ユニットを説明する。以下の説明において、略同一の機能及び構成を有する構成要素については、同一符号を付し、重複説明は必要な場合にのみ行う。 Hereinafter, the secondary battery unit according to the present embodiment will be described with reference to the drawings. In the following description, components having substantially the same function and configuration are given the same reference numerals, and repeated description will be made only when necessary.
　図１は、本実施形態に係る二次電池ユニット１０の外観を示す斜視図である。図２は、図１の二次電池ユニット１０の縦断面図である。本実施形態に係る二次電池ユニット１０は、電池規格に準じた寸法で構成された有底の円筒形状のケース１１を有する。典型的には、ケース１１は単３形規格に準じた高さ及び直径の円筒体で構成される。円筒形状のケース１１の前後端面には電池規格に準じて正極端子１３と負極端子１５が装備される。ケース１１の内側には単４形規格の単一の二次電池２１が収納される。二次電池２１としてはニッケル水素電池、ニッケルカドミウム電池、リチウムイオン二次電池、その他のいずれの種類であってもよい。 FIG. 1 is a perspective view showing the appearance of a secondary battery unit 10 according to the present embodiment. FIG. 2 is a longitudinal sectional view of the secondary battery unit 10 of FIG. The secondary battery unit 10 which concerns on this embodiment has the case 11 of the bottomed cylindrical shape comprised by the dimension according to the battery | cell specification. Typically, the case 11 is comprised of a cylinder of height and diameter according to the AA standard. The positive electrode terminal 13 and the negative electrode terminal 15 are mounted on the front and rear end surfaces of the cylindrical case 11 according to the battery standard. A single secondary battery 21 of AAA standard is accommodated inside the case 11. The secondary battery 21 may be a nickel hydrogen battery, a nickel cadmium battery, a lithium ion secondary battery, or any other type.
　二次電池２１の正極端子２３と負極端子２５は、ケース１１の前後端面の正極端子１３と負極端子１５にそれぞれ電気的に接続される。通常の単３形の一次電池又は二次電池に代替仕様が可能、つまり単３形電池で駆動する外部負荷装置の電池ボックスに単独で又は他の単３形電池と直列又は並列状態で装着することができる。なお、二次電池ユニットは他の電池規格に準じた形状及び寸法で形成したものでもよい。 The positive electrode terminal 23 and the negative electrode terminal 25 of the secondary battery 21 are electrically connected to the positive electrode terminal 13 and the negative electrode terminal 15 on the front and rear end faces of the case 11 respectively. Alternative specifications are possible for regular AA primary batteries or secondary batteries, that is, they are mounted alone or in series or in parallel with other AA batteries in the battery box of an external load device driven by AA batteries. be able to. The secondary battery unit may be formed in a shape and a size in accordance with other battery standards.
　二次電池２１の中心軸は円筒形のケース１１の中心軸に対して半径方向にオフセットされる。このオフセットは、ケース１１と二次電池２１との間に僅かなスペースを確保する。このスペースには、二次電池２１の充電回路を形成した基板３０が設置される。 The central axis of the secondary battery 21 is radially offset with respect to the central axis of the cylindrical case 11. This offset secures a slight space between the case 11 and the secondary battery 21. In this space, a substrate 30 on which a charging circuit of the secondary battery 21 is formed is installed.
　図３に示すように、本実施形態に係る二次電池ユニット１０に無接点充電機能を装備させるために複数の二次コイル１０１，２０１，３０１を有している。複数の二次コイル１０１，２０１，３０１はそれぞれ並列に接続された共振用コンデンサ１０３，２０３，３０３と共に複数の並列共振回路を構成する。これら並列共振回路の共振周波数は互いに同一に設定される。二次コイル１０１，２０１，３０１は、外部の一次コイルからの交番磁束により電流を誘起する。一次コイルは外部負荷装置の電池ボックスに装備されており、この電池ボックスに装着した状態で二次電池ユニット１０の二次電池２１を充電することが可能になっている。二次コイル１０１，２０１，３０１については後述する。 As shown in FIG. 3, in order to equip the secondary battery unit 10 according to the present embodiment with a contactless charging function, a plurality of secondary coils 101, 201, and 301 are provided. The plurality of secondary coils 101, 201, and 301 form a plurality of parallel resonance circuits together with the resonance capacitors 103, 203, and 303 connected in parallel. The resonant frequencies of these parallel resonant circuits are set equal to one another. The secondary coils 101, 201, 301 induce a current by alternating magnetic flux from an external primary coil. The primary coil is provided in the battery box of the external load device, and it is possible to charge the secondary battery 21 of the secondary battery unit 10 in a state of being attached to the battery box. The secondary coils 101, 201, and 301 will be described later.
　二次コイル１０１は共振用コンデンサ１０３とともに並列共振回路を構成する。並列共振回路には、二次コイル１０１に発生した誘起電流を整流するための整流用ダイオード１０５と整流用ダイオード１０５で整流された電流を平滑化する平滑用コンデンサ１０７とから構成される整流回路が接続される。整流回路により整流された電流により二次電池２１が充電される。同様に、二次コイル２０１と共振用コンデンサ２０３とからなる並列共振回路には整流用ダイオード２０５と平滑用コンデンサ２０７とから構成される整流回路が接続され、二次コイル３０１と共振用コンデンサ３０３とからなる並列共振回路は整流用ダイオード３０５と平滑用コンデンサ３０７とから構成される整流回路が接続される。
二次電池２１に対して複数系統の並列共振回路及び整流回路が並列に接続される。しかし図５に示すように、二次コイル１０１，２０１，３０１に対して単体の整流回路を並列に設けて整流回路を共用させる構成を否定するものではない。 The secondary coil 101 and the resonance capacitor 103 constitute a parallel resonance circuit. In the parallel resonant circuit, there is provided a rectifying circuit comprising a rectifying diode 105 for rectifying an induced current generated in the secondary coil 101 and a smoothing capacitor 107 for smoothing the current rectified by the rectifying diode 105. Connected The secondary battery 21 is charged by the current rectified by the rectification circuit. Similarly, the parallel resonant circuit composed of the secondary coil 201 and the resonant capacitor 203 is connected to a rectifier circuit composed of the rectifying diode 205 and the smoothing capacitor 207, and the secondary coil 301 and the resonant capacitor 303 The parallel resonant circuit is connected to a rectifying circuit composed of a rectifying diode 305 and a smoothing capacitor 307.
A plurality of parallel resonant circuits and rectifier circuits are connected in parallel to the secondary battery 21. However, as shown in FIG. 5, the configuration in which a single rectifier circuit is provided in parallel to the secondary coils 101, 201, and 301 to share the rectifier circuit is not to be denied.
　図４Ａにケース１１に収納された二次コイル１０１，２０１，３０１の斜視図を示し、図４Ｂに二次コイル１０１，２０１，３０１の展開図を示す。二次コイル１０１，２０１，３０１は、フレキシブルな絶縁基板１００の表面にメッキ法、エッチング法等でスパイラル形に導体パターンが形成されてなる平面コイルである。絶縁基板１００はケース１１の内寸とほぼ等価な長さ、ケース１１の内周長とほぼ等価な幅に構成される。二次コイル１０１，２０１，３０１が形成された絶縁基板１００は円筒状に湾曲され、円筒形のケース１１の内面と、二次電池２１や基板３０との隙間に挿入される。それに伴って二次コイル１０１，２０１，３０１はケース１１の内周面に沿って湾曲される。 FIG. 4A shows a perspective view of the secondary coils 101, 201, and 301 housed in the case 11, and FIG. 4B shows a developed view of the secondary coils 101, 201, and 301. The secondary coils 101, 201, and 301 are planar coils formed by forming a conductor pattern in a spiral shape on the surface of a flexible insulating substrate 100 by a plating method, an etching method, or the like. The insulating substrate 100 has a length substantially equivalent to the inner dimension of the case 11 and a width substantially equivalent to the inner circumferential length of the case 11. The insulating substrate 100 in which the secondary coils 101, 201, and 301 are formed is curved in a cylindrical shape, and is inserted into a gap between the inner surface of the cylindrical case 11 and the secondary battery 21 or the substrate 30. Along with that, the secondary coils 101, 201, 301 are curved along the inner circumferential surface of the case 11.
　二次コイル１０１，２０１，３０１は寸法、巻数、巻き方向に関して同一のコイルであり、ケース１１の軸方向に長い長円、楕円又は矩形に構成される。二次コイル１０１，２０１，３０１を形成した絶縁基板１００は円筒状に湾曲され、円筒形のケース１１の内面と二次電池２１や基板３０との隙間に挿入される。結果的に二次コイル１０１，２０１，３０１はケース１１の内周面に沿って湾曲される。 The secondary coils 101, 201, and 301 are identical coils in terms of size, number of turns, and winding direction, and are formed into an oval, an ellipse, or a rectangle long in the axial direction of the case 11. The insulating substrate 100 in which the secondary coils 101, 201, and 301 are formed is curved in a cylindrical shape, and is inserted into the gap between the inner surface of the cylindrical case 11 and the secondary battery 21 or the substrate 30. As a result, the secondary coils 101, 201, 301 are curved along the inner circumferential surface of the case 11.
　円筒状に湾曲された基板３０上で二次コイル１０１，２０１，３０１が互いに正対しないように二次コイル１０１，２０１，３０１は奇数個、好ましくは図示したように３個である。二次コイル１０１，２０１，３０１が３個であれば、二次コイル１０１，２０１，３０１はケース１１の周方向に沿って１２０°ずつずらして配置される。二次コイル１０１，２０１，３０１の個数を“２ｎ－１”（ｎ；正の整数）に一般化すると、二次コイル１０１，２０１，３０１は３６０°／（２ｎ－１）ずつずらされる。さらに二次コイル１０１，２０１，３０１が互いにオーバーラップしないように、各二次コイル１０１，２０１，３０１は１２０°の範囲内、一般化すると３６０°／（２ｎ－１）の範囲内に形成される。 The number of secondary coils 101, 201, 301 is an odd number, preferably three as shown, so that the secondary coils 101, 201, 301 do not face each other on the cylindrically curved substrate 30. If there are three secondary coils 101, 201, and 301, the secondary coils 101, 201, and 301 are arranged shifted by 120 ° along the circumferential direction of the case 11. When the number of secondary coils 101, 201, and 301 is generalized to "2 n -1" (n: positive integer), the secondary coils 101, 201, and 301 are shifted by 360 ° / (2 n -1). Furthermore, each secondary coil 101, 201, 301 is formed in a range of 120 °, generally 360 ° / (2 n-1), so that the secondary coils 101, 201, 301 do not overlap with each other. Ru.
　本実施形態に係る二次電池ユニット１０は二次電池と共に二次コイル及び充電回路を備えていることから電池ボックスに装着したままで充電することが可能となる。 Since the secondary battery unit 10 according to the present embodiment includes the secondary coil and the charging circuit together with the secondary battery, it is possible to charge the battery while being attached to the battery box.
　また二次電池ユニット１０は円筒形であり、軸回転し易く、どの向きで外部負荷装置の電池ボックスに装着されるかは不測である。どの向きで二次電池ユニット１０が外部負荷装置の電池ボックスに装着されたとしても誘起電流を発生させ、効率的に二次電池２１を充電可能とすることが望ましい。本実施形態では、上述したように、複数の二次コイル１０１，２０１，３０１を周面に沿って配列させているので、電池ボックスに装備された一次コイルに対して二次コイル１０１，２０１，３０１のいずれかが重なり、誘起電流を発生されて二次電池２１を充電することができる。 Further, the secondary battery unit 10 is cylindrical and easy to rotate, and it is unexpected in which direction it is mounted on the battery box of the external load device. It is desirable to generate an induced current regardless of which direction the secondary battery unit 10 is attached to the battery box of the external load device, and to efficiently charge the secondary battery 21. In the present embodiment, as described above, since the plurality of secondary coils 101, 201, 301 are arranged along the circumferential surface, the secondary coils 101, 201, Any one of 301 overlaps, and an induced current can be generated to charge the secondary battery 21.
　また一次コイルに対して二次コイル１０１，２０１，３０１のいずれか２個がオーバーラップして、各コイルで電流が誘起されたときであっても、二次コイル１０１，２０１，３０１に対して個々に整流回路を独立して設け、これら整流回路を二次電池２１に対して並列に接続していることから、各別に整流された電流を合成させることができ、損失無く効率的に二次電池２１を充電することができる。 Also, even when any two secondary coils 101, 201, 301 overlap with the primary coil and current is induced in each coil, the secondary coils 101, 201, 301 can be generated. Since the rectifier circuits are individually provided individually and connected in parallel to the secondary battery 21, it is possible to combine the currents rectified separately, and efficiently without loss. The battery 21 can be charged.
　また奇数個の二次コイル１０１，２０１，３０１を周方向に分散して配置したことで、ある１個の二次コイルが一次コイルに正対したとき、二次電池２１を挟んで反対側で他のコイルが一次コイルに正対することはなく、従って二次コイルが互いに磁束変化を打ち消しあう事態が生じることはない。 Further, by arranging the odd number of secondary coils 101, 201, 301 in a dispersed manner in the circumferential direction, when one of the secondary coils faces the primary coil, the secondary battery 21 is interposed on the opposite side. The other coils do not face the primary coil, so that the secondary coils do not cancel each other out of the flux change.
　本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。 While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.
　１０…二次電池ユニット、１１…ケース、１３…正極端子（ケース）、１５…負極端子（ケース）、２１…二次電池、２３…正極端子（二次電池）、２５…負極端子（二次電池）、３０…基板、１０１、２０１、３０１…二次コイル、１０３、２０３、３０３…共振用コンデンサ、１０５，２０５，３０５…整流用ダイオード、１０７，２０７，３０７…平滑用コンデンサ。 DESCRIPTION OF SYMBOLS 10 ... Secondary battery unit, 11 ... Case, 13 ... Positive electrode terminal (case), 15 ... Negative electrode terminal (case), 21 ... Secondary battery, 23 ... Positive electrode terminal (secondary battery), 25 ... Negative electrode terminal (Secondary Battery) 30: substrate, 101, 201, 301: secondary coil, 103, 203, 303: capacitor for resonance, 105, 205, 305: diode for rectification, 107, 207, 307: capacitor for smoothing.

Claims (7)

  1. 　外部負荷装置の電池ボックスに単独又は他の外部電池と直列／並列状態で装着可能な二次電池ユニットにおいて、
    　電池規格に準じた形状及び寸法を有し、正極端子と負極端子とを装備するケースと、
    　前記ケース内に収納され、前記正極端子と前記負極端子に電気的に接続される二次電池と、
    　前記ケースの内面又は外面に配列され、外部の一次コイルからの交番磁束により誘起電流を発生させる複数の平面型の二次コイルと、
    　前記ケース内に収納され、前記複数の二次コイルに個々に設けられ、前記二次電池に対して並列接続され、前記二次コイルの出力を整流及び平滑して前記二次電池を充電する複数の充電回路とを具備することを特徴とする二次電池ユニット。     In a secondary battery unit that can be mounted alone or in series / parallel with other external batteries in the battery box of the external load device,
    A case equipped with a positive electrode terminal and a negative electrode terminal, having a shape and a size conforming to a battery standard,
    A secondary battery housed in the case and electrically connected to the positive electrode terminal and the negative electrode terminal;
    A plurality of planar secondary coils arranged on the inner or outer surface of the case and generating an induced current by alternating magnetic flux from an external primary coil;
    A plurality of units housed in the case, individually provided to the plurality of secondary coils, connected in parallel to the secondary battery, and rectifying and smoothing the output of the secondary coil to charge the secondary battery And a charging circuit for the secondary battery unit.
  2. 　前記ケースは有底の円筒形状を有し、前記ケースの上端面と下端面とに前記正極端子と前記負極端子とがそれぞれ装備されることを特徴とする請求項１記載の二次電池ユニット。 The secondary battery unit according to claim 1, wherein the case has a cylindrical shape with a bottom, and the positive electrode terminal and the negative electrode terminal are respectively provided on the upper end surface and the lower end surface of the case.
  3. 　前記二次コイルの個数は奇数であることを特徴とする請求項２記載の二次電池ユニット。 The number of the said secondary coil is an odd number, The secondary battery unit of Claim 2 characterized by the above-mentioned.
  4. 　前記二次コイルの個数は３であり、前記ケースの周方向に沿って１２０°ずつずれて配列されることを特徴とする請求項３記載の二次電池ユニット。 The secondary battery unit according to claim 3, wherein the number of secondary coils is three, and the secondary coils are arranged at intervals of 120 ° along the circumferential direction of the case.
  5. 　前記二次コイルは、前記ケースの内面に沿って湾曲されることを特徴とする請求項２記載の二次電池ユニット。 The secondary battery unit according to claim 2, wherein the secondary coil is curved along the inner surface of the case.
  6. 　前記二次コイルは、前記ケースの軸方向に長い長円、楕円又は矩形のコイル形状を有することを特徴とする請求項２記載の二次電池ユニット。 The secondary battery unit according to claim 2, wherein the secondary coil has a coil shape that is long oval, oval or rectangular in the axial direction of the case.
  7. 　外部負荷装置に対して電気的に接続される正極端子と負極端子と、
    　前記正極端子と前記負極端子とに接続される二次電池と、
    　外部の一次コイルからの交番磁束により誘起電流を発生させる複数の二次コイルと、
    　前記複数の二次コイルに個々に設けられ、前記二次電池に対して並列接続され、前記二次コイルの出力を整流及び平滑して前記二次電池を充電する複数の充電回路とを具備することを特徴とする二次電池ユニット。     Positive and negative terminals electrically connected to the external load device;
    A secondary battery connected to the positive electrode terminal and the negative electrode terminal;
    A plurality of secondary coils that generate an induced current by alternating magnetic flux from an external primary coil;
    And a plurality of charging circuits individually provided in the plurality of secondary coils, connected in parallel to the secondary battery, and rectifying and smoothing the output of the secondary coil to charge the secondary battery. A secondary battery unit characterized by
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