JP2018191508A

JP2018191508A - Power supply having non-contact power transmission means

Info

Publication number: JP2018191508A
Application number: JP2018123726A
Authority: JP
Inventors: 健志中村; Kenji Nakamura; 山本　宏; Hiroshi Yamamoto; 宏山本; 和伸松本; Kazunobu Matsumoto; 井戸　寛; Hiroshi Ido; 寛井戸; 宮内　靖; Yasushi Miyauchi; 靖宮内
Original assignee: Maxell Holdings Ltd
Current assignee: Maxell Ltd
Priority date: 2014-03-26
Filing date: 2018-06-28
Publication date: 2018-11-29
Anticipated expiration: 2034-03-26
Also published as: JP2015186410A; JP6665231B2; JP6366318B2

Abstract

【課題】防水機能を備え、かつ耐衝撃性を備えた全天候型の電源を提供する。【解決手段】本発明の電源は、素電池と、素電池の充放電を制御する保護回路と、非接触で電力を受電できる受電共振器と、非接触で電力を送電できる送電共振器と、所定の電圧の直流電力に変換するＡＣ−ＤＣ変換器と、直流電力を所定の周波数の交流電力に変換するインバーターを備え、電源の全面が例えば成形樹脂で覆われている。その結果、電源は外部機器や充電器と非接触で電力を受け渡しできるので、従来のような電池パックに設けられていた外部機器との電気的な接点を設ける必要がなく、防水機能と耐衝撃性を備えた全天候型の電源を実現することができる。【選択図】図１PROBLEM TO BE SOLVED: To provide an all-weather power supply having a waterproof function and shock resistance. A power supply according to the present invention includes a unit cell, a protection circuit that controls charging and discharging of the unit cell, a power receiving resonator that can receive power in a non-contact manner, and a power transmission resonator that can transmit power in a non-contact manner. An AC-DC converter that converts DC power of a predetermined voltage and an inverter that converts DC power to AC power of a predetermined frequency are provided, and the entire surface of the power supply is covered with, for example, molding resin. As a result, the power supply can transfer power to and from external devices and chargers without contact, so there is no need to provide electrical contacts with external devices that were provided in conventional battery packs. It is possible to realize an all-weather power source with good performance. [Selection diagram] Figure 1

Description

本発明は、電力伝送を非接触（ワイヤレス）で行う非接触電力伝送技術を備えた電源に関する。 The present invention relates to a power supply equipped with a non-contact power transmission technique for performing power transmission in a non-contact (wireless) manner.

非接触で電力を伝送する方法（以下無線給電と呼ぶ）として、電磁誘導による電磁誘導方式、電界または磁界の共振を利用した共鳴給電方式、及びマイクロ波を利用したマイクロ波送電方式がよく知られている。 As a method of transmitting power without contact (hereinafter referred to as wireless power feeding), an electromagnetic induction method using electromagnetic induction, a resonance power feeding method using resonance of an electric field or a magnetic field, and a microwave power transmission method using a microwave are well known. ing.

特許文献１や特許文献２に開示されている電池パックは、非接触で電力を受電する受電コイルを内蔵しており、非接触で電力を受電することができる。 The battery pack disclosed in Patent Literature 1 and Patent Literature 2 incorporates a power receiving coil that receives power in a non-contact manner, and can receive power in a non-contact manner.

図１０は特許文献１に示された、電池パック３０の分解斜視図である。特許文献１に示された電池パック３０は、電力を非接触で受電するための２次コイル２１が一体化されている点で、従来の電池パックと相違する。 FIG. 10 is an exploded perspective view of the battery pack 30 disclosed in Patent Document 1. As shown in FIG. The battery pack 30 disclosed in Patent Document 1 is different from a conventional battery pack in that a secondary coil 21 for receiving power in a non-contact manner is integrated.

図１１は特許文献１に示された、充電台１０と携帯電子機器２０の関係を模式的に示した図である。電池パック３０は携帯電子機器２０に取り付けられている。充電台１０に携帯電子機器２０を載置し、充電台１０から携帯電子機器２０に取り付けられた電池パック３０に電力を送出する。この際、電池パック３０に内蔵している２次コイル２１を、充電台１０の１次コイル１１と電磁結合させて、電磁誘導方式によりワイヤレスで内蔵される電池パック３０の電池３１を充電する。 FIG. 11 is a diagram schematically showing the relationship between the charging base 10 and the portable electronic device 20 disclosed in Patent Document 1. As shown in FIG. The battery pack 30 is attached to the portable electronic device 20. The portable electronic device 20 is placed on the charging stand 10, and power is sent from the charging stand 10 to the battery pack 30 attached to the portable electronic device 20. At this time, the secondary coil 21 incorporated in the battery pack 30 is electromagnetically coupled to the primary coil 11 of the charging stand 10 to charge the battery 31 of the battery pack 30 incorporated wirelessly by an electromagnetic induction method.

携帯電子機器２０を使用する際には、携帯電子機器２０は電池パック３０から電力の供給を受ける。携帯電子機器２０と電池パック３０は電池パック３０に設けられた出力端子４４を介して電気的に接続されており、電池パック３０から携帯電子機器２０への電力の供給は出力端子４４を介して行われる。 When using the portable electronic device 20, the portable electronic device 20 is supplied with power from the battery pack 30. The portable electronic device 20 and the battery pack 30 are electrically connected via an output terminal 44 provided on the battery pack 30, and power is supplied from the battery pack 30 to the portable electronic device 20 via the output terminal 44. Done.

以上は、特許文献１の記載に基づいて背景技術を説明したが、特許文献２についても同様であるので詳細な説明は省略する。 The background technology has been described above based on the description in Patent Document 1. However, since the same applies to Patent Document 2, detailed description thereof is omitted.

特開２００８−１４１９４０号公報JP 2008-141940 A 特開２０１３−３１３０３号公報JP 2013-31303 A

特許文献１や特許文献２では、充電台から電池パックに非接触で電力を伝送して電池パックを充電するが、電池パックから携帯電子機器に電力を伝送する際には電池パックの出力端子を介して電力が伝送される。そのため、電池パックには携帯電子機器に電力を伝送するための電気的な接点として出力端子を設ける必要がある。 In Patent Document 1 and Patent Document 2, power is transmitted from the charging stand to the battery pack in a non-contact manner to charge the battery pack. However, when power is transmitted from the battery pack to the portable electronic device, the output terminal of the battery pack is connected. Power is transmitted through the network. Therefore, it is necessary to provide the battery pack with an output terminal as an electrical contact for transmitting power to the portable electronic device.

ところで、特許文献１や特許文献２の携帯電子機器は防水機能を有するものが増えており、近年、雨天での使用や水中での使用が増加している。そのため、防水機能を備えた携帯電子機器を雨天下で使用している場合や水中で使用している場合において、携帯電子機器に電力を供給する電源の電力の残量が少なくなった時には、その場で電力を供給できる電源に交換したいという要求が想定される。すなわち、今後は携帯電子機器だけでなく携帯電子機器に電力を供給できる電源にも防水機能が要求されることが想定される。 By the way, the portable electronic devices of Patent Document 1 and Patent Document 2 are increasingly equipped with a waterproof function, and in recent years, use in rainy weather and use in water are increasing. Therefore, when a portable electronic device with a waterproof function is used in the rain or underwater, when the remaining power of the power source that supplies power to the portable electronic device decreases, It is assumed that there is a demand for replacement with a power supply that can supply power in the field. In other words, it is assumed that a waterproof function will be required not only for portable electronic devices but also for power supplies that can supply power to portable electronic devices.

また、携帯電子機器は使用時に誤って落としてしまう場合もあり、落下にも耐えうる耐衝撃性能も要求される。この場合、携帯電子機器に電力を供給できる電源にも耐衝撃性能が要求されることになる。 In addition, portable electronic devices may be accidentally dropped during use, and impact resistance performance that can withstand dropping is also required. In this case, a power supply capable of supplying power to the portable electronic device is also required to have impact resistance performance.

このように、近年は携帯電子機器も過酷な環境で使用される場合があり、今後の電源には信頼性の面から防水機能、機械的強度といった全天候型の特性が要求される。また、携帯電子機器に限らず、一般の電気機器に関しても安全志向の高まり等から防水機能、機械的強度は非常に重要な設計要件となっている。 Thus, in recent years, portable electronic devices are sometimes used in harsh environments, and future power supplies are required to have all-weather characteristics such as waterproof function and mechanical strength from the viewpoint of reliability. Further, not only for portable electronic devices but also for general electric devices, waterproof function and mechanical strength are very important design requirements due to the increase in safety orientation.

この観点から、特許文献１や特許文献２の電池パックを評価すると、特許文献１の電池パックは携帯電子機器に電力を伝送するための電気的な接点を必要とする点で問題があった。このような電気的な接点は、水に触れると腐食し、導電性が低下して電池パックから携帯電子機器に電力を伝送できなくなるからである。また、電池パックを誤って落下させた場合、露出した接点部が破壊されて電池パックが使用不能に陥る場合もあった。したがって、特許文献１や特許文献２の電池パックは全天候型の特性を満足するものではなかった。 From this point of view, when the battery packs of Patent Literature 1 and Patent Literature 2 are evaluated, the battery pack of Patent Literature 1 has a problem in that it requires an electrical contact for transmitting power to the portable electronic device. This is because such an electrical contact is corroded when exposed to water, and the electrical conductivity is lowered, so that power cannot be transmitted from the battery pack to the portable electronic device. Further, when the battery pack is accidentally dropped, the exposed contact portion may be destroyed and the battery pack may become unusable. Therefore, the battery packs of Patent Document 1 and Patent Document 2 do not satisfy all-weather characteristics.

本出願は、電源の防水機能や耐衝撃性の要請に応える発明であり、従来の電気的な接点を設ける必要のない充放電可能な全天候型の電源を提供することを目的とする。 The present application is an invention that meets the requirements for the waterproof function and impact resistance of a power source, and an object thereof is to provide a conventional all-weather power source capable of being charged and discharged without the need of providing an electrical contact.

さらに本出願は、電気的な接点を設ける必要のない充放電可能な全天候型の電源にするが故に発生する特有の新たな課題を抽出し、その課題を解決する手段をも提供することを目的とする。 Furthermore, the present application aims to provide a means for solving the problems by extracting unique new problems that occur due to an all-weather power source that can be charged and discharged without the need to provide electrical contacts. And

上記課題を解決するために、本発明の非接触電力伝送手段を備えた電源は、素電池と、前記素電池の充放電を制御する保護回路と、送電コイル及び送電共振容量により構成された送電共振器と、受電コイル及び受電共振容量により構成された受電共振器と、前記受電共振器が受電する交流電力を前記素電池に充電するための所定の電圧の直流電力に変換するＡＣ−ＤＣ変換器と、前記素電池に充電された直流電力を所定の周波数の交流電力に変換して前記送電共振器に電力を供給するインバーターを備え、前記素電池、前記保護回路、前記送電共振器、前記受電共振器、前記ＡＣ−ＤＣ変換器、及び前記インバーターが成形樹脂を用いて一体化され、電気的な導電部材が表面に露出しない樹脂モールド構造を有し、前記保護回路に押圧スイッチが接続され、前記押圧スイッチ面に当接するようにブロックが前記成形樹脂内に設けられ、前記成形樹脂の外部から前記ブロックを押圧することにより前記スイッチ面を押圧して前記押圧スイッチのオン／オフを行うことを特徴とする非接触電力伝送手段を備えたことを特徴とする。
In order to solve the above-described problems, a power source including the non-contact power transmission unit of the present invention includes a unit cell, a protection circuit that controls charging / discharging of the unit cell, a power transmission coil, and a power transmission resonance capacitor. AC-DC conversion for converting a resonator, a power receiving resonator including a power receiving coil and a power receiving resonance capacitor, and AC power received by the power receiving resonator into DC power of a predetermined voltage for charging the unit cell And an inverter that converts the DC power charged in the unit cell into AC power having a predetermined frequency and supplies the power to the power transmission resonator, the unit cell, the protection circuit, the power transmission resonator, The power receiving resonator, the AC-DC converter, and the inverter are integrated using a molding resin, and have a resin mold structure in which an electrically conductive member is not exposed on the surface. Is connected, and a block is provided in the molding resin so as to contact the pressing switch surface. The pressing switch is pressed by pressing the block from the outside of the molding resin to turn on / off the pressing switch. And a non-contact power transmission means.

本発明は、素電池、素電池の保護回路、電力を送受電するためのコイル等を電気的な導通部が表面に露出しないように一体化させた電源である。本発明の電源は、非接触で電力を受電できる受電共振器と、非接触で電力を送電できる送電共振器とを備えるので、非接触で外部機器と電力の送受電が可能であり、電源に電気的な接点を設ける必要が無い。そのため、接点が腐食することによる接触不良の問題が発生することがない。さらに、電源に防水機能を持たせることができ、その結果、防水機能を備えた携帯電子機器を雨天下、もしくは水中で使用中に電源を交換することが可能となる。 The present invention is a power source in which a unit cell, a unit cell protection circuit, a coil for transmitting and receiving electric power, and the like are integrated so that an electrically conductive portion is not exposed on the surface. Since the power source of the present invention includes a power receiving resonator that can receive power in a contactless manner and a power transmission resonator that can transmit power in a contactless manner, power can be transmitted to and received from an external device in a contactless manner. There is no need to provide electrical contacts. Therefore, the problem of poor contact due to corrosion of the contacts does not occur. Furthermore, the power supply can be provided with a waterproof function. As a result, the power supply can be replaced while the portable electronic device having the waterproof function is used in the rain or underwater.

また、本発明の電源を誤って水中に落下させて水没させてしまった場合でも、従来の電池パックのように使用不能になることはなく、使用を継続することができる。さらに、本発明の電源は電気的な接点等が電源の表面に露出しない。そのため、電源を誤って落下させた場合でも、耐衝撃性を大幅に向上させることができる。すなわち、本発明によれば防水機能と耐衝撃性を兼ね備えた全天候型の電源を実現できる。 Moreover, even if the power supply of the present invention is accidentally dropped into water and submerged, it is not unusable like a conventional battery pack and can be used continuously. Furthermore, the power source of the present invention does not expose electrical contacts or the like on the surface of the power source. Therefore, even if the power supply is accidentally dropped, the impact resistance can be greatly improved. That is, according to the present invention, it is possible to realize an all-weather power source having both a waterproof function and an impact resistance.

さらに、保護回路等の電子回路の周りに水分を含んだ空気が存在しないため温度変化による結露が発生せず、内部の結露による電子回路等の故障を抑制できる。結露の問題は、電源を常温の室内・車内から高温多湿の屋外へ持ち込んだ場合、逆に低温の屋外から常温の室内・車内に入った場合等に生じうる。 Further, since there is no moisture-containing air around the electronic circuit such as the protection circuit, condensation due to temperature change does not occur, and failure of the electronic circuit due to internal condensation can be suppressed. Condensation problems can occur when a power source is brought from a room temperature / room to a high temperature / humidity environment, or from a low temperature outdoors to a room temperature / room.

本発明の第１の電源の斜視概略図である。It is a perspective schematic diagram of the 1st power supply of the present invention. 本発明の第２の電源の斜視概略図である。It is a perspective schematic diagram of the 2nd power supply of the present invention. 本発明の第２の電源を非接触で充電する際のブロック図である。It is a block diagram at the time of charging the 2nd power supply of this invention non-contactingly. 本発明の第２の電源から携帯電子機器に非接触で送電する際のブロック図である。It is a block diagram at the time of non-contact power transmission to the portable electronic device from the 2nd power supply of this invention. 本発明の第１の電源に充放電の切替えのための補助部品を加えた斜視概略図である。It is the isometric view schematic which added the auxiliary component for switching of charging / discharging to the 1st power supply of this invention. 図５ＡにおけるＡ−Ａ線断面図である。It is the sectional view on the AA line in FIG. 5A. 本発明の第３の電源の斜視概略図である。It is a perspective schematic diagram of the 3rd power supply of the present invention. 本発明の第１の電源にガス放出構造として薄肉部を設けた場合の断面図である。It is sectional drawing at the time of providing a thin part as a gas discharge | release structure in the 1st power supply of this invention. 本発明の第１の電源にガス放出構造として鋭角部品を設けた場合の断面図である。It is sectional drawing at the time of providing an acute angle part as a gas discharge | release structure in the 1st power supply of this invention. 本発明の第１の電源にガス放出構造として鋭角部品を設けるとともに薄肉部も設けた場合の断面図である。It is sectional drawing at the time of providing an acute angle part as a gas discharge structure in the 1st power supply of this invention, and also providing a thin part. 本発明の第１の電源にガス放出構造として薄肉部を設けた場合の断面図である。It is sectional drawing at the time of providing a thin part as a gas discharge | release structure in the 1st power supply of this invention. 本発明の第１の電源にガス放出構造として鋭角部品を設けた場合の断面図である。It is sectional drawing at the time of providing an acute angle part as a gas discharge | release structure in the 1st power supply of this invention. 本発明の第１の電源にガス放出構造として鋭角部品を設けるとともに薄肉部も設けた場合の断面図である。It is sectional drawing at the time of providing an acute angle part as a gas discharge structure in the 1st power supply of this invention, and also providing a thin part. 本発明の第４の電源の斜視概略図である。It is a perspective schematic diagram of the 4th power supply of the present invention. 従来の電池パックの分解斜視図である。It is a disassembled perspective view of the conventional battery pack. 従来の電池パックを充電する際の断面図である。It is sectional drawing at the time of charging the conventional battery pack.

以下、本発明の実施の形態における電源の構成について、図面を参照しながら詳説する。 Hereinafter, the configuration of the power supply according to the embodiment of the present invention will be described in detail with reference to the drawings.

図１は、本発明の第１の電源１００の概略斜視図を示す。電源１００は電池１０１と非接触送受電回路２００を有し、電池１０１と非接触送受電回路２００は接続コード１０４などによって電気的に接続されている。電池１０１と非接触総受電回路２００間が狭くできる場合にはコード１０４を介さなくともコネクタによる結合も可能である。 FIG. 1 shows a schematic perspective view of a first power supply 100 of the present invention. The power source 100 includes a battery 101 and a non-contact power transmission / reception circuit 200. The battery 101 and the non-contact power transmission / reception circuit 200 are electrically connected by a connection cord 104 or the like. When the space between the battery 101 and the non-contact total power receiving circuit 200 can be narrowed, the connection by the connector is possible without using the cord 104.

電池１０１は素電池とその素電池の充放電を制御する保護回路を備えている。素電池はリチウムイオン電池を用いている。電源１００は、電源１００の外部から電池１０１の充放電の開始及び停止を制御するために用いられる光センサー１０６ａ及び１０６ｂ、同じく、電源１００の外部から電池１０１の充放電を制御するために用いられる押圧スイッチ１０７ａ及び１０７ｂを有し、さらには、電池１０１の残量を表示する残量計１０８を有する。また、電池１０１は電池１０１の内部で発生したガスを電池１０１の外部に放出するためのベント１０５を有する。これら電源１００を構成する構成要素１０１乃至１０８は一体化されている。 The battery 101 includes a unit cell and a protection circuit that controls charging / discharging of the unit cell. The unit cell uses a lithium ion battery. The power supply 100 is used to control charging / discharging of the battery 101 from the outside of the power supply 100, as well as the optical sensors 106a and 106b used to control the start and stop of charging / discharging of the battery 101 from the outside of the power supply 100. It has press switches 107a and 107b, and further has a fuel gauge 108 for displaying the remaining amount of the battery 101. The battery 101 also has a vent 105 for releasing gas generated inside the battery 101 to the outside of the battery 101. The constituent elements 101 to 108 constituting the power source 100 are integrated.

図１では、本発明の電源１００は成形樹脂１０９で一体化されており、電源１００の全面が成形樹脂１０９で覆われている。電源１００は、金型内の所定位置に構成要素１０１乃至１０８を配置し、その金型内に成形樹脂を射出することにより作ることができる。その場合、図１に示した電源１００は樹脂モールド構造を有する。本発明の電源では電気的な導通部が表面に露出していないことが従来の電池パックや電源にはない特徴である。 In FIG. 1, the power source 100 of the present invention is integrated with a molding resin 109, and the entire surface of the power source 100 is covered with the molding resin 109. The power supply 100 can be made by disposing the constituent elements 101 to 108 at predetermined positions in the mold and injecting molding resin into the mold. In that case, the power supply 100 shown in FIG. 1 has a resin mold structure. In the power supply of the present invention, the fact that the electrically conductive portion is not exposed on the surface is a feature that the conventional battery pack and power supply do not have.

以下では、本発明の電源の動作や構成を実施の形態に分けて詳しく説明する。 Hereinafter, the operation and configuration of the power supply of the present invention will be described in detail by dividing them into embodiments.

（第１の実施の形態）
図２は、本発明の第２の電源１２０の概略斜視図を示す。電源１２０は、非接触受電回路２４０と非接触送電回路２５０を有し、非接触受電回路２４０と電池１０１は、接続コード１０４ａなどで接続され、非接触送電回路２５０と電池１０１は、接続コード１０４ｂで接続されている。図１の場合と同様に、電池１０１と非接触総受電回路２００間が狭くできる場合にはコード１０４を介さなくともコネクタによる結合も可能である。図２の本発明の第２の電源１２０を図１の本発明の第１の電源１００と比較すると、本発明の第２の電源１２０は受電の機能を有する非接触受電回路２４０と送電の機能を有する非接触送電回路２５０を個別に設けるが、本発明の第１の電源１００は送電と受電の機能を兼ね備える非接触送受電回路２００である点で異なる。第１の実施の形態では、まず、図２の本発明の電源１２０に基づいて充電時の動作、及び放電時の動作を説明する。 (First embodiment)
FIG. 2 shows a schematic perspective view of the second power source 120 of the present invention. The power source 120 includes a non-contact power receiving circuit 240 and a non-contact power transmission circuit 250. The non-contact power receiving circuit 240 and the battery 101 are connected by a connection cord 104a or the like, and the non-contact power transmission circuit 250 and the battery 101 are connected by a connection cord 104b. Connected with. As in the case of FIG. 1, when the space between the battery 101 and the non-contact total power receiving circuit 200 can be narrowed, the connection by the connector is possible without using the cord 104. 2 is compared with the first power supply 100 of the present invention of FIG. 1, the second power supply 120 of the present invention has a non-contact power receiving circuit 240 having a power receiving function and a power transmission function. The first power supply 100 of the present invention is different in that it is a contactless power transmission / reception circuit 200 having both power transmission and power reception functions. In the first embodiment, first, the operation at the time of charging and the operation at the time of discharging will be described based on the power source 120 of the present invention of FIG.

本発明の電源１２０は非接触で電力を送受電する。非接触で電力を伝送する方式として、電磁誘導による電磁誘導方式、共振を利用した共鳴給電方式、及びマイクロ波を利用したマイクロ波送電方式が知られている。この中で既に実用化されているのは、電磁誘導方式である。これは技術的には相互誘導におよそ位置付けすることができ、従来から様々な検討がされているため安価な回路で構成できるという優位性はあるが、送電距離が短いという課題もある。そこで最近、共振を利用して電力を数ｍ先まで伝送する共鳴給電方式が提案され、この技術を利用した製品開発が、電機メーカー、自動車メーカーを中心に進められている。以下では、本発明の電源は、非接触で電力を送受電する方式として共鳴給電方式を例にとって説明する。但し、本発明の電源は共鳴給電方式に限るものではなく、前述の電磁誘導方式等、別の非接触電力伝送方式を用いてもよい。 The power source 120 of the present invention transmits and receives power without contact. As a method for transmitting power without contact, an electromagnetic induction method using electromagnetic induction, a resonance power supply method using resonance, and a microwave power transmission method using microwaves are known. Among them, the electromagnetic induction method has already been put into practical use. This can be technically positioned as mutual induction, and since various studies have been made so far, there is an advantage that it can be configured with an inexpensive circuit, but there is also a problem that the transmission distance is short. Therefore, recently, a resonance power feeding method has been proposed in which resonance is used to transmit power up to several meters ahead, and product development using this technology is being promoted mainly by electrical manufacturers and automobile manufacturers. In the following, the power supply of the present invention will be described by taking a resonance power feeding method as an example of a method for transmitting and receiving power without contact. However, the power source of the present invention is not limited to the resonance power feeding method, and another non-contact power transmission method such as the electromagnetic induction method described above may be used.

まず、電源１２０の充電時の動作について説明する。図３は、本発明の電源１２０を充電器３００で充電する場合の概略図を示す。電源１２０を充電する際には、電源１２０の非接触受電回路２４０が用いられる。 First, the operation at the time of charging the power source 120 will be described. FIG. 3 shows a schematic diagram when the power source 120 of the present invention is charged by the charger 300. When charging the power supply 120, the non-contact power receiving circuit 240 of the power supply 120 is used.

電源１２０は、充電器３００に近づけて、非接触で充電器３００から電力を受電する。充電器３００において、ＤＣ電源３０１から送電回路３０２に供給された電力は、送電回路３０２で共鳴給電のための所定の周波数の高周波電力に変換される。送電回路３０２は、高周波電力を送電コイル３０４に供給する。なお、フェライト板３０３は、送電コイル３０４から発生する電磁波ノイズがＤＣ電源３０１や送電回路３０２に漏洩することを防止する。送電コイル３０４はコンデンサ３０５に接続されており、送電コイル３０４とコンデンサ３０５で送電側共振ユニットを構成する。 The power source 120 is close to the charger 300 and receives power from the charger 300 in a non-contact manner. In the charger 300, the power supplied from the DC power supply 301 to the power transmission circuit 302 is converted into high-frequency power having a predetermined frequency for resonance power supply by the power transmission circuit 302. The power transmission circuit 302 supplies high frequency power to the power transmission coil 304. The ferrite plate 303 prevents electromagnetic wave noise generated from the power transmission coil 304 from leaking to the DC power supply 301 or the power transmission circuit 302. The power transmission coil 304 is connected to a capacitor 305, and the power transmission coil 304 and the capacitor 305 constitute a power transmission side resonance unit.

電源１２０において、受電コイル２４１はコンデンサ２４２に接続されており、受電コイル２４１とコンデンサ２４２で受電側共振ユニットを構成する。共鳴給電方式に基づく非接触電力伝送では、充電器３００の送電側共振ユニットと電源１２０の受電側共振ユニットが共振することにより、高効率の非接触電力伝送が可能になる。 In the power source 120, the power receiving coil 241 is connected to a capacitor 242, and the power receiving coil 241 and the capacitor 242 constitute a power receiving side resonance unit. In the non-contact power transmission based on the resonance power feeding method, the power transmission side resonance unit of the charger 300 and the power reception side resonance unit of the power source 120 resonate, thereby enabling highly efficient non-contact power transmission.

充電器３００の送電コイル３０４から送られた高周波電力は、電源１２０の受電コイル２４１が受電する。受電コイル２４１が受けた高周波電力は、整流回路を含む受電回路２４４に供給されＡＣ−ＤＣ変換など所定の電気的処理を経た後、電池充電回路２４５に供給される。電池充電回路２４５は、接続コネクタ１０４ａを介して電池１０１に接続されており、定電流定電圧充電等、電池１０１に適した方式で電池１０１の充電を行う。なお、フェライト板２４３は、受電コイル２４１から発生する電磁波ノイズが受電回路２４４や電池充電回路２４５に漏洩することを防止する。 The high frequency power transmitted from the power transmission coil 304 of the charger 300 is received by the power reception coil 241 of the power source 120. The high frequency power received by the power receiving coil 241 is supplied to the power receiving circuit 244 including a rectifier circuit, and after passing through a predetermined electrical process such as AC-DC conversion, is supplied to the battery charging circuit 245. The battery charging circuit 245 is connected to the battery 101 via the connection connector 104a, and charges the battery 101 by a method suitable for the battery 101, such as constant current and constant voltage charging. Note that the ferrite plate 243 prevents electromagnetic wave noise generated from the power receiving coil 241 from leaking to the power receiving circuit 244 and the battery charging circuit 245.

次に、電源１２０の放電時の動作について説明する。図４は、本発明の電源１２０から携帯電子機器４００に電力を供給する場合の概略図を示す。電源１２０を放電する際には、電源１２０の非接触送電回路２５０が用いられる。 Next, the operation at the time of discharging the power source 120 will be described. FIG. 4 shows a schematic diagram when power is supplied from the power source 120 of the present invention to the portable electronic device 400. When discharging the power supply 120, the non-contact power transmission circuit 250 of the power supply 120 is used.

電源１２０は、携帯電子機器４００に近づけて、非接触で携帯電子機器４００に電力を供給する。電源１２０において、電池１０１から接続コネクタ１０４ｂを介して高周波駆動回路２５４に供給された直流電力は、高周波駆動回路２５４で共鳴給電のための所定の周波数の高周波電力に変換される。直流電力を所定の周波数の高周波電力に変換する回路としては、一般的に知られているハーフブリッジ回路やフルブリッジ回路を用いればよい。高周波駆動回路２５４は、高周波電力を送電コイル２５１に供給する。なお、フェライト板２５３は、送電コイル２５１から発生する電磁波ノイズが高周波駆動回路２５４に漏洩することを防止する。送電コイル２５１はコンデンサ２５２に接続されており、送電コイル２５１とコンデンサ２５２で送電側共振ユニットを構成する。 The power source 120 is close to the portable electronic device 400 and supplies power to the portable electronic device 400 in a non-contact manner. In the power source 120, DC power supplied from the battery 101 to the high frequency drive circuit 254 via the connection connector 104 b is converted into high frequency power of a predetermined frequency for resonance power supply by the high frequency drive circuit 254. A generally known half-bridge circuit or full-bridge circuit may be used as a circuit that converts DC power into high-frequency power having a predetermined frequency. The high frequency drive circuit 254 supplies high frequency power to the power transmission coil 251. The ferrite plate 253 prevents electromagnetic wave noise generated from the power transmission coil 251 from leaking to the high frequency drive circuit 254. The power transmission coil 251 is connected to the capacitor 252, and the power transmission coil 251 and the capacitor 252 constitute a power transmission side resonance unit.

携帯電子機器４００において、受電コイル４０１はコンデンサ４０２に接続されており、受電コイル４０１とコンデンサ４０２で受電側共振ユニットを構成する。電源１２０の送電側共振ユニットと携帯電子機器４００の受電側共振ユニットが共振し、高効率の非接触電力伝送が行われる。 In the portable electronic device 400, the power receiving coil 401 is connected to a capacitor 402, and the power receiving coil 401 and the capacitor 402 constitute a power receiving side resonance unit. The power transmission side resonance unit of the power source 120 and the power reception side resonance unit of the portable electronic device 400 resonate, and highly efficient non-contact power transmission is performed.

電源１２０の送電コイル２５１から送られた高周波電力は、携帯電子機器４００の受電コイル４０１が受電する。受電コイル４０１が受けた高周波電力は、整流回路を含む受電回路４０４に供給されＡＣ−ＤＣ変換など所定の電気的処理を経た後、携帯電子機器４００の動作を司る電気回路４０５に供給される。なお、フェライト板４０３は、受電コイル４０１から発生する電磁波ノイズが受電回路４０４や電気回路４０５に漏洩することを防止する。 The high-frequency power transmitted from the power transmission coil 251 of the power source 120 is received by the power reception coil 401 of the portable electronic device 400. The high-frequency power received by the power receiving coil 401 is supplied to a power receiving circuit 404 including a rectifier circuit, is subjected to predetermined electrical processing such as AC-DC conversion, and is then supplied to an electric circuit 405 that governs the operation of the portable electronic device 400. Note that the ferrite plate 403 prevents electromagnetic noise generated from the power receiving coil 401 from leaking to the power receiving circuit 404 or the electric circuit 405.

以上では、図２に示した非接触受電回路２４０と非接触送電回路２５０を個別に設ける電源１２０を例として説明したが、非接触受電回路２４０と非接触送電回路２５０を一つの非接触送受電回路２００としてもよい。その場合、電源の構成は図１の電源１００のようになる。非接触送受電回路２００では、受電時と送電時とでコイルを共有し、受電時にはコイルを非接触受電回路２４０と接続し、送電時には非接触送電回路２５０と接続するようなスイッチを設ければよい。非接触送受電回路２００では、受電時と送電時とでコイルを共有するので電源１００の小型化に有利である。電源１００の受電時と送電時で共振周波数が異なる場合があるが、送受電のコイルに可変容量コンデンサを接続するか、受電時と送電時で送受電のコイルに接続するコンデンサの容量を切り替えればよい。すなわち、受電時と送電時でコンデンサの容量を変化させれば、一つの送受電のコイルにおいて受電時と送電時で共振周波数を自由に設定できる。 In the above description, the power supply 120 provided with the contactless power receiving circuit 240 and the contactless power transmission circuit 250 shown in FIG. 2 is described as an example, but the contactless power receiving circuit 240 and the contactless power transmission circuit 250 are combined into one contactless power transmission / reception. The circuit 200 may be used. In that case, the configuration of the power supply is as shown in FIG. In the non-contact power transmission / reception circuit 200, a switch is provided that shares a coil during power reception and power transmission, connects the coil to the non-contact power reception circuit 240 during power reception, and connects to the non-contact power transmission circuit 250 during power transmission. Good. The non-contact power transmission / reception circuit 200 is advantageous in reducing the size of the power supply 100 because the coil is shared between power reception and power transmission. The resonance frequency may be different between power receiving and power transmission of the power supply 100, but if a variable capacitor is connected to the power transmission / reception coil, or if the capacitance of the capacitor connected to the power transmission / reception coil is switched between power reception and power transmission Good. That is, if the capacitance of the capacitor is changed during power reception and power transmission, the resonance frequency can be freely set in one power transmission / reception coil during power reception and power transmission.

ところで、整流回路を含む受電回路２４４や直流電力を所定の周波数の高周波電力に変換する高周波駆動回路２５４は、非接触電力伝送時に大きな熱が発生する。電源１００は全面が成形樹脂１０９で覆われていることを特徴とするが、一方、電源１００内で発生した熱をいかに放熱させるかが問題となる。 Meanwhile, the power receiving circuit 244 including the rectifier circuit and the high-frequency driving circuit 254 that converts DC power into high-frequency power having a predetermined frequency generate large heat during non-contact power transmission. The power supply 100 is characterized in that the entire surface is covered with the molding resin 109. On the other hand, there is a problem of how to dissipate the heat generated in the power supply 100.

そこで、成形樹脂１０９にカーボン等の導電性フィラーを含ませる。導電性フィラーを含ませることで非接触電力伝送時に発生する熱を効率的に放熱することができる。ただし、成形樹脂１０９に導電性フィラーを多量に含ませると電力伝送効率が大きく劣化してしまう。そのため、熱が発生する受電回路２４４や高周波駆動回路２５４の周辺のみに回路動作に影響が出ないようにしながらフィラー密度の高い樹脂を用いることが有効である。或いは窒化ボロンなどの高熱伝導かつ絶縁体であるセラミック等を配置することも有効である。これにより受電回路２４４や高周波駆動回路２５４から発生する熱を効率的に放熱できるとともに受電回路２４４や高周波駆動回路２５４への電磁ノイズも防ぐことができる。 Therefore, a conductive filler such as carbon is included in the molding resin 109. By including a conductive filler, heat generated during non-contact power transmission can be efficiently radiated. However, if the molding resin 109 contains a large amount of conductive filler, the power transmission efficiency is greatly deteriorated. Therefore, it is effective to use a resin having a high filler density while preventing the circuit operation from being affected only around the power receiving circuit 244 and the high frequency driving circuit 254 that generate heat. Alternatively, it is also effective to dispose high thermal conductivity ceramics such as boron nitride. Thus, heat generated from the power receiving circuit 244 and the high frequency driving circuit 254 can be efficiently radiated and electromagnetic noise to the power receiving circuit 244 and the high frequency driving circuit 254 can be prevented.

（第２の実施の形態）
図１に示した本発明の第１の電源１００において、充電若しくは放電を開始する際には、電源１００の外部から、電源１００に充電若しくは放電の指示信号を与える必要がある。充電若しくは放電の指示信号を与える方法として、電源１００の外部から光信号を用いる場合、及び電源１００の外部から外力を加える場合が考えられる。そのため、電源１００は、外部から電池１０１の充放電の開始及び停止を制御するために用いられる光センサー１０６ａ及び１０６ｂや、電源１００の外部から電池１０１の充放電を制御するために用いられる押圧スイッチ１０７ａ及び１０７ｂを有している。 (Second Embodiment)
In the first power supply 100 of the present invention shown in FIG. 1, when charging or discharging is started, it is necessary to give a charging or discharging instruction signal to the power supply 100 from the outside of the power supply 100. As a method for giving an instruction signal for charging or discharging, a case where an optical signal is used from the outside of the power source 100 and a case where an external force is applied from the outside of the power source 100 can be considered. For this reason, the power source 100 includes optical sensors 106a and 106b used for controlling the start and stop of charging / discharging of the battery 101 from the outside, and a press switch used for controlling charging / discharging of the battery 101 from the outside of the power source 100. 107a and 107b.

電源１００は全面が成形樹脂１０９で覆われていることを特徴とするが、一般的に成形樹脂は光透過性が低いものが多く、成形樹脂で覆われた光センサー１０６ａ、１０６ｂに光が十分に到達しない場合がある。また、一般的に成形樹脂１０９は硬いものが多く、成形樹脂１０９で覆われた押圧スイッチ１０７ａ、１０７ｂに外力が十分に到達しない場合がある。 The power supply 100 is characterized in that the entire surface is covered with the molding resin 109. However, in general, the molding resin often has low light transmittance, and the light sensors 106a and 106b covered with the molding resin have sufficient light. May not reach. In general, the molding resin 109 is often hard and external force may not reach the press switches 107a and 107b covered with the molding resin 109 sufficiently.

そこで、第２の実施の形態では、電源の全面を成形樹脂で覆いつつ、光センサー１０６ａ及び１０６ｂや、押圧スイッチ１０７ａ及び１０７ｂの機能を妨げない構成について説明する。 Therefore, in the second embodiment, a configuration that does not hinder the functions of the optical sensors 106a and 106b and the press switches 107a and 107b while covering the entire surface of the power source with the molding resin will be described.

図５Ａは、図１の電源１００に充電若しくは放電を開始するための補助部品を加えた電源１３０概略斜視図を示す。補助部品を加えることにより、光センサー１０６ａ、１０６ｂに光を十分に到達させ、押圧スイッチ１０７ａ、１０７ｂに外力を十分に到達させることができる。 FIG. 5A shows a schematic perspective view of a power supply 130 in which auxiliary components for starting charging or discharging are added to the power supply 100 of FIG. By adding auxiliary parts, light can sufficiently reach the optical sensors 106a and 106b, and external force can sufficiently reach the pressing switches 107a and 107b.

以下では、図５Ａに示す電源１３０を例として、充電若しくは放電の指示信号を与える方法について説明する。まずは、光信号を用いて電源１３０に充電若しくは放電の指示信号を与える場合について説明する。 In the following, a method for giving an instruction signal for charging or discharging will be described using the power supply 130 shown in FIG. 5A as an example. First, a case where a charge or discharge instruction signal is given to the power supply 130 using an optical signal will be described.

電源１３０では、光センサー１０６ａ上に導光体１１１ａを、光センサー１０６ｂ上に導光体１１１ｂを配置する。電源１００の充電を開始する際には、外部から１１１ａを通じて光センサー１０６ａに光を照射する。光センサー１０６ａは受光した光を光電変換した電気信号を、電池１０１に備えられた保護回路に充電開始信号として送信する。 In the power supply 130, the light guide 111a is disposed on the optical sensor 106a, and the light guide 111b is disposed on the optical sensor 106b. When charging of the power supply 100 is started, light is irradiated to the optical sensor 106a from the outside through 111a. The optical sensor 106a transmits an electrical signal obtained by photoelectrically converting the received light as a charging start signal to a protection circuit provided in the battery 101.

一方、電源１３０の放電を開始する際には、外部から１１１ｂを通じて光センサー１０６ｂに光を照射する。光センサー１０６ｂは受光した光を光電変換した電気信号を、電池１０１に備えられた保護回路に放電開始信号として送信する。 On the other hand, when the discharge of the power supply 130 is started, light is irradiated to the optical sensor 106b from the outside through 111b. The optical sensor 106b transmits an electrical signal obtained by photoelectrically converting the received light as a discharge start signal to a protection circuit provided in the battery 101.

電源１３０を成形樹脂１０９で一体化する際に、光透過性が高い導光体１１１ａと１１１ｂを、それぞれ光センサー１０６ａと１０６ｂ上に配置しておくことにより電源１３０を作成できる。 When the power supply 130 is integrated with the molding resin 109, the power supply 130 can be created by disposing light guides 111a and 111b having high light transmittance on the optical sensors 106a and 106b, respectively.

電源１３０の充電を開始する際に、外部から１１１ａを通じて光センサー１０６ａに光を照射する外部機器としては、例えば図３で示した充電器３００が考えられる。一方、電源１３０の放電を開始する際に、外部から１１１ｂを通じて光センサー１０６ｂに光を照射する外部機器としては、例えば図４で示した携帯電子機器４００が考えられる。 For example, a charger 300 shown in FIG. 3 is conceivable as an external device that emits light to the optical sensor 106a from the outside through 111a when charging the power source 130 is started. On the other hand, for example, the portable electronic device 400 shown in FIG. 4 can be considered as an external device that irradiates light to the optical sensor 106b from the outside through 111b when discharging the power supply 130 is started.

なお、電源１３０の充電若しくは放電を開始する際の信号としては、充電若しくは放電の開始時のみパルス的に光を照射してもよいし、充電時若しくは放電時に継続して光を照射してもよい。放電時に継続して光を照射する場合、携帯電子機器４００が何らかの理由で電源１３０からの放電を断ちたい場合は、携帯電子機器４００からの光照射を停止することにより電源１３０の放電を停止することができる。この場合、光センサー１０６ｂに緊急停止スイッチとしての機能も持たせることができる。 As a signal for starting charging or discharging of the power supply 130, light may be irradiated in pulses only at the start of charging or discharging, or light may be irradiated continuously during charging or discharging. Good. When irradiating light continuously at the time of discharge and the portable electronic device 400 wants to cut off the discharge from the power source 130 for some reason, the discharge of the power source 130 is stopped by stopping the light irradiation from the portable electronic device 400. be able to. In this case, the optical sensor 106b can also have a function as an emergency stop switch.

次に電源１３０の外部から外力を加えて電源１３０に充電若しくは放電の指示信号を与える場合について説明する。 Next, a case where an external force is applied from the outside of the power supply 130 to give a charge or discharge instruction signal to the power supply 130 will be described.

電源１３０では、押圧スイッチ１０７ａ上にブロック１１２ａを、押圧スイッチ１０７ｂ上にブロック１１２ｂを配置する。電源１３０の充電を開始する際には、外部からブロック１１２ａを押すことにより押圧スイッチ１０７ａを押圧する。押圧スイッチ１０７ａは押圧により得られた電気信号を、電池１０１に備えられた保護回路に充電開始信号として送信する。 In the power supply 130, the block 112a is disposed on the push switch 107a, and the block 112b is disposed on the push switch 107b. When charging the power supply 130 is started, the pressing switch 107a is pressed by pressing the block 112a from the outside. The pressing switch 107a transmits an electric signal obtained by pressing as a charging start signal to a protection circuit provided in the battery 101.

一方、電源１３０の放電を開始する際には、外部からブロック１１２ｂを押すことにより押圧スイッチ１０７ｂを押圧する。押圧スイッチ１０７ｂは押圧により得られた電気信号を、電池１０１に備えられた保護回路に放電開始信号として送信する。 On the other hand, when the discharge of the power supply 130 is started, the push switch 107b is pushed by pushing the block 112b from the outside. The pressing switch 107b transmits an electrical signal obtained by pressing as a discharge start signal to a protection circuit provided in the battery 101.

電源１３０を成形樹脂１０９で一体化する際に、ブロック１１２ａと１１２ｂを、それぞれ押圧スイッチ１０７ａと１０７ｂ上に配置しておくことにより電源１３０を作成できる。 When the power supply 130 is integrated with the molding resin 109, the power supply 130 can be created by arranging the blocks 112a and 112b on the pressing switches 107a and 107b, respectively.

外部から１１２ａを通じて押圧スイッチ１０７ａに外力を加え、外部から１１２ｂを通じて押圧スイッチ１０７ｂに外力を加えるのは、主として電源１３０のユーザーである。 It is mainly the user of the power supply 130 that applies an external force to the push switch 107a through the external 112a and applies an external force to the push switch 107b through the external 112b.

なお、充電若しくは放電の指示信号を与える方法として、電源１３０の外部から光信号を用いる場合、及び電源１３０の外部から外力を加える場合を説明したが、これらは個別に用いてもよいし、併用してもよい。 In addition, as a method of giving a charge or discharge instruction signal, the case where an optical signal is used from the outside of the power supply 130 and the case where an external force is applied from the outside of the power supply 130 have been described, but these may be used individually or in combination. May be.

図５Ｂは、図５ＡにおけるＡ−Ａ線断面図を示す。導光体１１１ａは必ずしも光センサー１０６ａに接する必要はなく、また、必ずしも電源１３０の表面に露出させる必要もない。外部からの光信号が十分に光センサー１０６ａに伝わる構成であればよい。ブロック１１２ａについても、必ずしも押圧スイッチ１０７ａに接する必要はなく、また、必ずしも電源１３０の表面に露出させる必要もない。外部からの外力が十分に押圧スイッチ１０７ａに伝わる構成であればよい。 5B shows a cross-sectional view taken along line AA in FIG. 5A. The light guide 111a is not necessarily in contact with the optical sensor 106a, and is not necessarily exposed to the surface of the power source 130. Any configuration may be used as long as an external optical signal is sufficiently transmitted to the optical sensor 106a. The block 112a does not necessarily need to be in contact with the push switch 107a, and does not necessarily have to be exposed on the surface of the power source 130. Any configuration may be used as long as an external force from the outside is sufficiently transmitted to the pressing switch 107a.

図６は、本発明の第３の電源１４０の概略斜視図を示す。電源１４０は、電池１０１と非接触送受電回路２００を電気的に接続した後、電池１０１と非接触送受電回路２００に勘合するように両側から光透過性ケース１１０を貼り合せた構造を有する。光透過性ケース１１０を貼り合せる方法としては、ねじ止め、超音波溶接、接着剤などいずれの方法でも構わない。なお、電源１４０は、防水の観点から光透過性ケース１１０を貼り合せた部分にゴムパッキン１１３を設けている。 FIG. 6 shows a schematic perspective view of the third power supply 140 of the present invention. The power supply 140 has a structure in which after the battery 101 and the non-contact power transmission / reception circuit 200 are electrically connected, the light transmissive case 110 is bonded from both sides so as to fit the battery 101 and the non-contact power transmission / reception circuit 200. As a method of bonding the light transmissive case 110, any method such as screwing, ultrasonic welding, and adhesive may be used. In addition, the power supply 140 is provided with a rubber packing 113 at a portion where the light transmissive case 110 is bonded from the viewpoint of waterproofing.

光透過性ケース１１０は光透過性を有する樹脂で形成する。光透過性を有する樹脂としては、例えば、ポリカーボネートを用いることができる。光透過性ケース１１０が光透過性を有するので、光センサー１０６ａや１０６ｂに十分な光を到達させることができる。 The light transmissive case 110 is formed of a light transmissive resin. As the resin having optical transparency, for example, polycarbonate can be used. Since the light transmissive case 110 is light transmissive, sufficient light can reach the optical sensors 106a and 106b.

以上は、図１の電源１００に充電若しくは放電を開始するための補助部品を加えた電源１３０、及びゴムパッキンを介して光透過性ケース１１０を貼り合せた電源１４０について説明した。なお、成形樹脂１０９にポリカーボネート等の光透過性樹脂を用いれば、図１の電源１００においても充電若しくは放電の指示信号を与えることができる。この場合、電池１０１の残量を表示する残量計１０８の視認性も向上するので好適である。 The power source 130 in which auxiliary components for starting charging or discharging are added to the power source 100 in FIG. 1 and the power source 140 in which the light transmissive case 110 is bonded via the rubber packing have been described above. If a light-transmitting resin such as polycarbonate is used for the molding resin 109, the power supply 100 in FIG. 1 can also give a charge or discharge instruction signal. In this case, the visibility of the fuel gauge 108 that displays the remaining amount of the battery 101 is also improved, which is preferable.

（第３の実施の形態）
先述と同様に、第３の実施の形態でも素電池にはリチウムイオン電池を用いており、素電池はアルミの深絞りによって形成された電池ケースに電極とセパレータの巻回体が封入されるとともに、電解液が封入されている。したがって、第３の実施の形態の素電池は所定の厚みの略矩形の外観を有する。 (Third embodiment)
Similarly to the above, the third embodiment also uses a lithium ion battery as the unit cell, and the unit cell is encased in a battery case formed by aluminum deep drawing, and a wound body of an electrode and a separator is enclosed. The electrolyte is sealed. Therefore, the unit cell of the third embodiment has a substantially rectangular appearance with a predetermined thickness.

このリチウムイオン電池を満充電の状態で高温下に長期間放置した場合や誤って過充電すると、電解液が分解されて素電池の内部でガスが発生することがある。また、充電と放電のサイクルを重ねることによりガスが発生することがある。わずかなガスの発生でも素電池の電池ケース内の内圧が上昇し、電池ケースの厚さ方向に目に見える膨れが生じる。また、万一電池内部での短絡等により熱暴走が生じ、電池ケース内の内圧が一定の値以上に上昇した場合、安全面の観点から電池ケース内部のガスを外部に放出するする必要があり、ガス放出機能を有するベントが素電池に設けられるのが通常である。 When this lithium ion battery is left in a fully charged state for a long time at a high temperature or accidentally overcharged, the electrolyte may be decomposed and gas may be generated inside the unit cell. Further, gas may be generated by repeated charging and discharging cycles. Even if a slight amount of gas is generated, the internal pressure in the battery case of the unit cell rises, and a visible swelling occurs in the thickness direction of the battery case. Also, if a thermal runaway occurs due to a short circuit inside the battery and the internal pressure inside the battery case rises above a certain value, it is necessary to release the gas inside the battery case to the outside from the viewpoint of safety. A unit cell is usually provided with a vent having a gas releasing function.

なお、本発明の素電池としてラミネート電池を用いることができるが、ラミネート電池でも膨れについては同じであるので説明は省略する。 In addition, although a laminated battery can be used as the unit cell of the present invention, the explanation of the swelling is the same for the laminated battery, and the description thereof is omitted.

本発明は、電源の全面を、例えば成形樹脂で覆うことを特徴とするが、ベントの部分も成形樹脂で覆うことになり、ベントが持つガス放出機能を妨げる場合がある。 The present invention is characterized in that the entire surface of the power source is covered with, for example, a molding resin, but the vent portion is also covered with the molding resin, which may hinder the gas release function of the vent.

そこで、第３の実施の形態では、電源の全面を成形樹脂で覆いつつ、ベントが持つガス放出機能を妨げない構成について説明する。 Therefore, in the third embodiment, a configuration that does not hinder the gas release function of the vent while covering the entire surface of the power source with the molding resin will be described.

以下では、ベントがアルミの深絞りによって形成された電池ケースの蓋部分に設けられる場合と、電池ケースの側面に設けられる場合に分けて説明する。まず、ベントが電池ケースの蓋部分に設けられる場合について説明する。 Hereinafter, the case where the vent is provided in the lid portion of the battery case formed by deep drawing of aluminum and the case where the vent is provided on the side surface of the battery case will be described separately. First, the case where a vent is provided in the cover part of a battery case is demonstrated.

図７Ａは、素電池１０１のベント１０５の開口方向に成形樹脂１０９の薄肉部１５０を設けた場合の電源１００の断面図を示す。薄肉部１５０を設けたことにより、ベント１０５を覆う樹脂の強度が弱くなり、ベント１０５のガス放出機能が保たれる。なお、電源１００の全面積に対するベント１０５の面積比は極めて小さいので、薄肉部１５０を設けても本発明の目的である防水機能、機械的強度といった全天候型の特性を阻害することはない。 FIG. 7A shows a cross-sectional view of the power supply 100 when the thin portion 150 of the molding resin 109 is provided in the opening direction of the vent 105 of the unit cell 101. By providing the thin portion 150, the strength of the resin covering the vent 105 is weakened, and the gas releasing function of the vent 105 is maintained. Since the area ratio of the vent 105 to the entire area of the power supply 100 is extremely small, the provision of the thin portion 150 does not hinder the all-weather characteristics such as waterproof function and mechanical strength, which are the objects of the present invention.

図７Ｂは、素電池１０１のベント１０５の開口方向に鋭角部品１５２を設けた場合の電源１００の断面図を示す。鋭角部品１５２を設けたことにより、ベント１０５が開裂する際に鋭角部品１５２により成形樹脂１０９が裂け、ベント１０５のガス放出機能が保たれる。 FIG. 7B shows a cross-sectional view of the power supply 100 when an acute angle component 152 is provided in the opening direction of the vent 105 of the unit cell 101. By providing the acute angle part 152, when the vent 105 is cleaved, the molding resin 109 is torn by the acute angle part 152, and the gas releasing function of the vent 105 is maintained.

図７Ｃは、素電池１０１のベント１０５の開口方向に成形樹脂１０９の薄肉部１５１を設けるとともに鋭角部品１５２を設けた場合の電源１００の断面図を示す。薄肉部１５１と鋭角部品１５２を併せ持つことにより、さらにベント１０５のガス放出機能が保たれることになる。 FIG. 7C shows a cross-sectional view of the power supply 100 in the case where the thin-walled portion 151 of the molding resin 109 is provided in the opening direction of the vent 105 of the unit cell 101 and the acute-angle component 152 is provided. By having both the thin part 151 and the acute angle part 152, the gas discharge function of the vent 105 is further maintained.

次に、ベントが電池ケースの側面に設けられる場合について説明する。 Next, the case where a vent is provided in the side surface of a battery case is demonstrated.

図８Ａは、素電池１０１のベント１６０の開口方向に成形樹脂１０９の薄肉部１５０を設けた場合の電源１００の断面図を示す。薄肉部１５０を設けたことにより、ベント１６０を覆う樹脂の強度が弱くなり、ベント１６０のガス放出機能が保たれる。なお、電源１００の全面積に対するベント１６０の面積比は極めて小さいので、薄肉部１５０を設けても本発明の目的である防水機能、機械的強度といった全天候型の特性を阻害することはない。 FIG. 8A shows a cross-sectional view of the power supply 100 when the thin portion 150 of the molding resin 109 is provided in the opening direction of the vent 160 of the unit cell 101. By providing the thin portion 150, the strength of the resin covering the vent 160 is weakened, and the gas release function of the vent 160 is maintained. In addition, since the area ratio of the vent 160 with respect to the total area of the power supply 100 is very small, even if the thin-walled portion 150 is provided, it does not hinder the all-weather characteristics such as waterproof function and mechanical strength, which are the objects of the present invention.

図８Ｂは、素電池１０１のベント１６０の開口方向に鋭角部品１５２を設けた場合の電源１００の断面図を示す。鋭角部品１５２を設けたことにより、ベント１６０が開裂する際に鋭角部品１５２により成形樹脂１０９が裂け、ベント１６０のガス放出機能が保たれる。 FIG. 8B shows a cross-sectional view of the power supply 100 when the acute angle component 152 is provided in the opening direction of the vent 160 of the unit cell 101. By providing the acute angle part 152, when the vent 160 is cleaved, the molded resin 109 is torn by the acute angle part 152, and the gas discharge function of the vent 160 is maintained.

図８Ｃは、素電池１０１のベント１６０の開口方向に成形樹脂１０９の薄肉部１５１を設けるとともに鋭角部品１５２を設けた場合の電源１００の断面図を示す。薄肉部１５１と鋭角部品１５２を併せ持つことにより、さらにベント１６０のガス放出機能が保たれることになる。 FIG. 8C shows a cross-sectional view of the power supply 100 in the case where the thin-walled portion 151 of the molding resin 109 is provided in the opening direction of the vent 160 of the unit cell 101 and the acute-angle component 152 is provided. By having both the thin part 151 and the acute angle part 152, the gas discharge function of the vent 160 is further maintained.

なお、ベントは通常、電池１０１の内圧が０．１−０．４ＭＰａになると開口するように設計するが、その作動圧の設計上の許容上限以下で成形樹脂の薄肉部１５０、１５１が開口し、鋭角部品１５２で樹脂１０９が開口するように設定する。具体的には、電池のベントが裂ける方向と樹脂が裂ける方向（裂けやすい方向）を同一方向とするのが好ましい。 The vent is normally designed to open when the internal pressure of the battery 101 reaches 0.1 to 0.4 MPa, but the molded resin thin-walled portions 150 and 151 open below the allowable upper limit in design of the operating pressure. The resin 109 is set to open at the acute-angle component 152. Specifically, the direction in which the battery vent tears and the direction in which the resin tears (the direction in which tearing easily occurs) are preferably the same direction.

（第４の実施の形態）
素電池はリチウムイオン電池を用いており、ガスの発生により電池ケース内の内圧が上昇し、電池ケースの厚さ方向に目に見える膨れが生じることは、第３の実施の形態で述べた。 (Fourth embodiment)
The unit cell uses a lithium ion battery, and it has been described in the third embodiment that the internal pressure in the battery case rises due to the generation of gas, and a visible swelling occurs in the thickness direction of the battery case.

第４の本実施の形態では、電源の全面を成形樹脂で覆いつつ、電池ケースの膨れを吸収するための膨れ吸収構造を有する電源について説明する。 In the fourth embodiment, a power supply having a swelling absorbing structure for absorbing swelling of a battery case while covering the entire surface of the power supply with a molding resin will be described.

図９は、本発明の第４の電源１８０の概略斜視図を示す。電源１８０は、膨れ吸収構造１７０を有する。膨れ吸収構造１７０は弾力性を有し、電池ケースの膨れを吸収する。膨れ吸収構造１７０は、乾燥エアまたはＡｒに代表される不活性ガスを充填しておけばよい。 FIG. 9 shows a schematic perspective view of the fourth power supply 180 of the present invention. The power supply 180 has a swelling absorbing structure 170. The swelling absorbing structure 170 has elasticity and absorbs the swelling of the battery case. The swelling absorbing structure 170 may be filled with an inert gas typified by dry air or Ar.

電源１８０は、さらに浮力カプセル１７１を有する。浮力カプセル１７１は、電源１８０が水中に落下した場合でも、電源１８０を浮き上がらせる程度の浮力を有する。浮力カプセル１７１は、乾燥エアまたはＡｒに代表される不活性ガスを充填しておけばよい。また、膨れ吸収構造１７０と浮力カプセル１７１を併せて電源を浮き上がらせる程度の浮力になるように、膨れ吸収構造１７０と浮力カプセル１７１の大きさを設計してもよい。 The power supply 180 further includes a buoyancy capsule 171. The buoyancy capsule 171 has buoyancy enough to lift the power supply 180 even when the power supply 180 falls into water. The buoyancy capsule 171 may be filled with an inert gas typified by dry air or Ar. In addition, the size of the swelling absorbing structure 170 and the buoyancy capsule 171 may be designed so that the swelling absorbing structure 170 and the buoyancy capsule 171 have a buoyancy enough to lift the power supply.

１００、１２０、１３０、１４０、１８０電源
１０１電池
１０４、１０４ａ、１０４ｂ接続コード
１０５ベント
１０６ａ、１０６ｂ光センサー
１０７ａ、１０７ｂ押圧スイッチ
１０８残量計
１０９成形樹脂
１１０光透過性ケース
１１１ａ、１１１ｂ導光体
１１２ａ、１１２ｂブロック
１１３ゴムパッキン
１５０、１５１薄肉部
１５２鋭角部品
１６０ベント
１７０膨れ吸収構造
１７１浮力カプセル
２００非接触送受電回路
２４０非接触受電回路
２４１、４０１受電コイル
２４２、２５２、３０５、４０２コンデンサ
２４３、２５３、３０３、４０３フェライト
２４４、４０４受電回路
２４５電池充電回路
２５０非接触送電回路
２５１、３０４送電コイル
２５４高周波駆動回路
３００充電器
３０１ＤＣ電源
３０２送電回路
４００携帯電子機器
４０５電気回路 100, 120, 130, 140, 180 Power supply 101 Battery 104, 104a, 104b Connection cord 105 Vent 106a, 106b Optical sensor 107a, 107b Push switch 108 Fuel gauge 109 Molded resin 110 Light transmissive case 111a, 111b Light guide 112a , 112b Block 113 Rubber packing 150, 151 Thin-walled portion 152 Acute angle component 160 Vent 170 Swelling absorbing structure 171 Buoyancy capsule 200 Non-contact power transmission / reception circuit 240 Non-contact power reception circuit 241, 401 Power reception coils 242, 252, 305, 402 Capacitors 243, 253 303, 403 Ferrite 244, 404 Power receiving circuit 245 Battery charging circuit 250 Non-contact power transmission circuit 251, 304 Power transmission coil 254 High frequency driving circuit 300 Battery charger 301 DC power supply 302 Power transmission circuit 4 0 portable electronic device 405 electrical circuit

Claims

Unit cells,
A protection circuit for controlling charging and discharging of the unit cell;
A power transmission resonator including a power transmission coil and a power transmission resonance capacity;
A power receiving resonator including a power receiving coil and a power receiving resonance capacitor;
An AC-DC converter that converts AC power received by the power-receiving resonator into DC power of a predetermined voltage for charging the unit cell;
An inverter that converts the DC power charged in the unit cell into AC power of a predetermined frequency and supplies the power to the power transmission resonator;
Resin mold in which the unit cell, the protection circuit, the power transmission resonator, the power reception resonator, the AC-DC converter, and the inverter are integrated using a molding resin so that an electrically conductive member is not exposed on the surface Has a structure,
A pressure switch is connected to the protection circuit, a block is provided in the molding resin so as to abut against the pressure switch surface, and the switch surface is pressed by pressing the block from the outside of the molding resin. A power supply comprising non-contact power transmission means for turning on / off a pressing switch.

2. The power supply with non-contact power transmission means according to claim 1, wherein pressing the block turns on / off a push switch to control the start or stop of charging / discharging of the first cell. .

The unit cell includes a vent for releasing gas generated inside the unit cell to the outside of the unit cell,
3. A power source provided with a non-contact power transmission means according to claim 1, further comprising a gas release structure for releasing the gas released from the vent to the outside of the molding resin.

The molding resin is formed so as to cover the vent,
The said gas discharge structure is a structure in which the thickness of the molding resin covering the vent is formed thinner than the thickness of the molding resin covering a portion other than the vent. Power supply with non-contact power transmission means.

The molding resin is formed so as to cover the vent,
4. The power supply with non-contact power transmission means according to claim 3, wherein the gas discharge structure is a structure in which a cutting blade-shaped member is provided between the molding resin covering the vent and the vent. .

The said unit cell has the substantially rectangular planar view shape of predetermined thickness, and the thickness increase absorption structure which can absorb the increase in the thickness of the said unit cell is provided. A power source comprising the non-contact power transmission means described in 1.

The power supply with non-contact power transmission means according to claim 6, wherein the thickness increasing absorption structure is constituted by a space provided adjacent to the unit cell.

The power supply with non-contact power transmission means according to claim 7, wherein the space is filled with an inert gas.

The power supply provided with the non-contact power transmission means according to claim 1 or 2, wherein a heat radiating material is provided inside the molding resin.

The power supply with non-contact power transmission means according to claim 9, wherein the heat dissipating material is provided at a high density in a portion of the molding resin that covers the AC-DC converter and the inverter. .

An optical sensor is connected to the protection circuit, the molding resin has optical transparency, an optical control signal is irradiated from the outside of the molding resin, and an electrical control signal obtained by photoelectrically converting the optical control signal is received by the optical sensor. The power supply comprising the non-contact power transmission means according to claim 1 or 2, wherein the power is transmitted to the protection circuit.

The power source provided with the non-contact power transmission means according to claim 1 or 2, wherein the molding resin has light transparency, and a fuel gauge that is visible through the molding resin is provided.

An optical sensor is connected to the protection circuit, and a light guide for improving the light guide property between the light receiving surface of the optical sensor and the outside of the molding resin is provided, and the light is transmitted from the outside of the molding resin through the light guide. 3. The non-contact power transmission means according to claim 1, wherein the light sensor is irradiated with a light control signal, and the light sensor transmits an electrical control signal obtained by photoelectrically converting the light control signal to the protection circuit. With power supply.

3. A power source provided with non-contact power transmission means according to claim 1, wherein a buoyancy mechanism is provided in the molding resin.