JP2014142726A - Vending machine - Google Patents

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JP2014142726A
JP2014142726A JP2013009690A JP2013009690A JP2014142726A JP 2014142726 A JP2014142726 A JP 2014142726A JP 2013009690 A JP2013009690 A JP 2013009690A JP 2013009690 A JP2013009690 A JP 2013009690A JP 2014142726 A JP2014142726 A JP 2014142726A
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electricity
power supply
direct current
current
voltage
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JP6103954B2 (en
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Hiroshi Araki
宏 新良貴
Hideki Kimura
秀樹 木村
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Kubota Corp
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Abstract

PROBLEM TO BE SOLVED: To easily continue a disaster rescue operation for a long period.SOLUTION: Voltage of direct current 12 converted and generated from AC current 10 is compared with voltage of direct current 14 provided from a storage battery 4. When the voltage of direct current 12 converted and generated from the AC current 10 is higher, the current supply from the storage battery 4 is suspended. Thereby, it is possible to easily continue a disaster rescue operation for a long period.

Description

本発明は、災害救援機能を備える自動販売機の電源供給を制御する電源回路に関する。   The present invention relates to a power supply circuit that controls power supply of a vending machine having a disaster relief function.

近年の自動販売機には、災害時に無償で商品を提供する災害救援機能を備えるものが見受けられる。
災害救援モードに移行する時は、通常、停電している場合が多いので、バッテリにより自動販売機を動作させていた。すなわち、自動販売機に蓄電池を内蔵し、災害救援動作時には、マニュアル操作で商用電源から蓄電池に切り換えて、災害救援動作に必要な回路への電源供給を行っていた。 Some vending machines in recent years have a disaster relief function that provides goods free of charge in the event of a disaster.
When shifting to the disaster relief mode, there is usually a power failure, so the vending machine is operated by a battery. That is, a storage battery is built in a vending machine, and at the time of disaster relief operation, power is supplied to a circuit necessary for disaster relief operation by switching from a commercial power source to a storage battery by manual operation.

従来の自動販売機の電源回路の構成について、図４を用いて説明する。
図４は従来の自動販売機の電源回路の構成を例示する概略図である。
従来の自動販売機の電源回路３０は、商用電源３１から交流電流３２が入力される。また、蓄電池３３を備え、蓄電池３３が供給する直流電流３４はＤＣ／ＡＣインバータ３５により交流電流３６に変換される。また、モード切替スイッチ３７を備えており、通常動作時は交流電流３２を選択し、災害救援動作時は外部からの操作により交流電流３６を選択する。選択された交流電流はＡＣ／ＤＣコンバータ３８およびＡＣ／ＤＣコンバータ３９に入力されて、それぞれ直流電流４０および直流電流４１が生成される。 A configuration of a power supply circuit of a conventional vending machine will be described with reference to FIG.
FIG. 4 is a schematic view illustrating the configuration of a power supply circuit of a conventional vending machine.
The power supply circuit 30 of the conventional vending machine receives an alternating current 32 from a commercial power supply 31. A direct current 34 provided with the storage battery 33 and supplied by the storage battery 33 is converted into an alternating current 36 by the DC / AC inverter 35. In addition, a mode changeover switch 37 is provided, and the alternating current 32 is selected during normal operation, and the alternating current 36 is selected by an external operation during a disaster relief operation. The selected alternating current is input to the AC / DC converter 38 and the AC / DC converter 39 to generate a direct current 40 and a direct current 41, respectively.

交流電流３２は温度調整回路４２等に供給される。直流電流４０は商品搬出用モータ４４等の消費電力の多い回路に供給される。また、直流電流４１はマイクロコンピュータなどからなる制御部４５等の低電圧で動作する回路に供給される。   The alternating current 32 is supplied to the temperature adjustment circuit 42 and the like. The direct current 40 is supplied to a circuit with high power consumption, such as a product carry-out motor 44. The direct current 41 is supplied to a circuit that operates at a low voltage, such as a control unit 45 including a microcomputer.

このような構成により、災害救援動作時には電源供給を蓄電池３３に切り替え、蓄電池３３から供給される電力により、直流電流４０および直流電流４１を生成し、直流電流４０および直流電流４１により、モータ４４や制御部４５等の、災害救援動作に必要な機器を動作させていた。   With such a configuration, the power supply is switched to the storage battery 33 during the disaster relief operation, the direct current 40 and the direct current 41 are generated by the power supplied from the storage battery 33, and the motor 44 and the direct current 41 are generated by the direct current 40 and the direct current 41. Devices necessary for disaster relief operations, such as the controller 45, were operated.

特開２０００−１３２７３７号公報JP 2000-132737 A 特開２００６−１９５９５０号公報JP 2006-195950 A

しかしながら、従来の自動販売機の電源回路では、外部からのマニュアル操作により災害救援モードに切り替えて蓄電池から電源供給する構造であるため、災害救援動作に商用電源が復旧しても蓄電池からの電源供給が継続される。そのため、不必要に蓄電池が電力の消費を続け、十分な災害救援動作の継続時間が確保されないという問題点があった。   However, since the power supply circuit of the conventional vending machine has a structure in which the power is supplied from the storage battery by switching to the disaster relief mode by manual operation from the outside, the power supply from the storage battery is supplied even if the commercial power supply is restored to the disaster relief operation. Will continue. Therefore, there was a problem that the storage battery continued to consume power unnecessarily, and sufficient duration of the disaster relief operation was not ensured.

上記問題点を解決するために、本発明の自動販売機の電源回路は、容易に、長期間災害救援動作を継続することを目的とする。   In order to solve the above problems, the power supply circuit of the vending machine according to the present invention aims to easily continue the disaster relief operation for a long period of time.

上記目的を達成するために、本発明の自動販売機の電源回路は、商用電源から交流電気を入力して第１の直流電気を生成するＡＣ／ＤＣコンバータと、第２の直流電気を供給する直流電池と、前記第１の直流電気または前記第２の直流電気の内の電圧の高い方の直流電気を選択して基本直流電気として出力する電源切替装置と、通常動作時には前記直流電池から前記電源切替装置への前記第２の直流電気の供給を切断し、災害救援動作時には前記直流電池から前記電源切替装置へ前記第２の直流電気を供給するモード切替手段とを有し、前記通常動作時は前記交流電気および前記基本直流電気で自動販売機を動作させ、前記災害救援動作時には前記基本直流電気で自動販売機を動作させることを特徴とする。   In order to achieve the above object, a power supply circuit of a vending machine according to the present invention supplies an AC / DC converter for generating first DC electricity by inputting AC electricity from a commercial power supply, and supplies second DC electricity. A direct current battery, a power source switching device that selects the first direct current electricity or the second direct current electricity that has a higher voltage and outputs the selected direct current electricity as basic direct current electricity; Mode switching means for cutting off the supply of the second DC electricity to the power switching device and supplying the second DC electricity from the DC battery to the power switching device during a disaster relief operation, and the normal operation In some cases, the vending machine is operated with the alternating current electricity and the basic direct current electricity, and the vending machine is operated with the basic direct current electricity during the disaster relief operation.

また、前記電源切替装置は、２つのダイオードが並列に配置され、出力が共通接続されることが好ましい。
また、前記第１の直流電気の電圧を測定してあらかじめ定めた基準電圧以上である場合には切断信号を出力する電源検出回路と、前記切断信号を入力して前記第２の直流電気が前記電源切替装置へ入力することを遮断する電源切断スイッチとをさらに有することが好ましい。 In the power supply switching device, it is preferable that two diodes are arranged in parallel and the outputs are commonly connected.
In addition, when the voltage of the first DC electricity is measured and is equal to or higher than a predetermined reference voltage, a power supply detection circuit that outputs a disconnection signal, and the second DC electricity is input by inputting the disconnection signal. It is preferable to further have a power cut-off switch that cuts off input to the power supply switching device.

また、前記交流電気が供給される機器は温度調整回路を含み、前記基本直流電気が供給される機器は前記基本直流電気から前記基本直流電気の電圧より電圧が低い第３の直流電気を生成するＤＣ／ＤＣコンバータとモータを含み、前記第３の直流電気が供給される機器は制御部を含むこととしても良い。   The device to which the AC electricity is supplied includes a temperature adjusting circuit, and the device to which the basic DC electricity is supplied generates third DC electricity having a voltage lower than the voltage of the basic DC electricity from the basic DC electricity. A device including a DC / DC converter and a motor and supplied with the third direct current electricity may include a control unit.

以上のように、本発明によれば、交流電流を変換して生成した直流電流の電圧と、直流電池から供給される直流電流の電圧とを比較し、交流電流を変換して生成した直流電流の電圧の方が高い場合には、直流電池からの電源供給を停止することにより、容易に、長期間災害救援動作を継続することが可能となる。   As described above, according to the present invention, the direct current voltage generated by converting the alternating current is compared with the direct current voltage generated by converting the alternating current and the direct current voltage supplied from the direct current battery. If the voltage is higher, it is possible to easily continue the disaster relief operation for a long period of time by stopping the power supply from the DC battery.

実施の形態１の自動販売機の電源回路の構成を例示する概念図である。FIG. 3 is a conceptual diagram illustrating the configuration of a power supply circuit of the vending machine according to the first embodiment. 実施の形態１の自動販売機の電源回路における電源切替装置の構成を説明する図である。It is a figure explaining the structure of the power supply switching apparatus in the power supply circuit of the vending machine of Embodiment 1. FIG. 実施の形態２の自動販売機の電源回路の構成を説明する要部構成図である。It is a principal part block diagram explaining the structure of the power supply circuit of the vending machine of Embodiment 2. FIG. 従来の自動販売機の電源回路の構成を例示する概略図である。It is the schematic which illustrates the structure of the power supply circuit of the conventional vending machine.

（実施の形態１）
まず、図１，図２を用いて、実施の形態１の自動販売機の電源回路の構成について説明する。 (Embodiment 1)
First, the configuration of the power supply circuit of the vending machine according to the first embodiment will be described with reference to FIGS.

図１は実施の形態１の自動販売機の電源回路の構成を例示する概念図、図２は実施の形態１の自動販売機の電源回路における電源切替装置の構成を説明する図である。
自動販売機３は、商品を所定の温度に保持する温度調整回路６，商品の搬出等に用いる各種モータ８，マイクロコンピュータからなり様々な機器の制御を行う制御部９、および、これらの機器に電源を供給する電源回路２等から構成される。また、各機器は、異なる電源が供給されるいくつかのグループに分けられ、電源回路２はそれに対応する電気を生成して各機器に供給する。例えば、交流電流で動作する機器や直流電流で動作する機器に分けられ、さらに、これらが１または複数の電圧毎に分けられる場合もある。本実施の形態では、電源回路２から、１００Ｖの交流電流１０，２４Ｖの直流電流１５，８Ｖの直流電流１７が供給される構成を例に説明する。また、温度調整回路６等は１００Ｖの交流電流１０で動作し、モータ８等は２４Ｖの直流電流１５で動作し、制御部９等は８Ｖの直流電流１７で動作するとする。 FIG. 1 is a conceptual diagram illustrating the configuration of the power supply circuit of the vending machine according to the first embodiment. FIG. 2 is a diagram illustrating the configuration of the power switching device in the power supply circuit of the vending machine according to the first embodiment.
The vending machine 3 includes a temperature adjustment circuit 6 that holds the product at a predetermined temperature, various motors 8 that are used to carry out the product, a control unit 9 that controls various devices including a microcomputer, and these devices. The power supply circuit 2 is configured to supply power. Each device is divided into several groups to which different power is supplied, and the power supply circuit 2 generates electricity corresponding to the group and supplies it to each device. For example, it may be divided into a device that operates with an alternating current or a device that operates with a direct current, and these may be further divided into one or more voltages. In the present embodiment, a configuration in which a 100 V AC current 10, 24 V DC current 15 and 8 V DC current 17 are supplied from the power supply circuit 2 will be described as an example. Further, it is assumed that the temperature adjustment circuit 6 and the like operate with a 100V AC current 10, the motor 8 and the like operate with a 24V DC current 15, and the control unit 9 and the like operate with an 8V DC current 17.

実施の形態１における電源回路２は、直流電池と電源切替装置１と各種コンバータとを備えることが基本構造である。なお、ここでは直流電池の例として蓄電池４を用いる場合について説明する。電源回路２は商用電源５と接続され、交流電流１０が入力される。交流電流１０はＡＣ／ＤＣコンバータ１１で直流電流１２に変換される。電源回路２には蓄電池４が内蔵され、商用電源５から電源が供給される間には、蓄電池４は交流電流１０によって充電される。蓄電池４の出力側にはモード切替スイッチ１３等のモード切替手段が設けられ、災害救援動作の際には蓄電池４から直流電流１４が出力される。また、電源切替装置１は直流電流１２および直流電流１４が入力され、電圧のより高い直流電流が選択されて、基本直流電気である直流電流１５として出力される。例えば、直流電流１２および直流電流１４は設計上２４Ｖの直流電流とするが、蓄電池４，商用電源５，ＡＣ／ＤＣコンバータ１１の状況や性能により、２４Ｖに対して誤差のある電圧となる。また、電源切替装置１の電圧降下により直流電流１５の電圧は直流電流１２または直流電流１４より低くなる。そのため、直流電流１５として２４Ｖが必要な場合は、電圧降下を見越して直流電流１２および直流電流１４の電圧を高く設計する。さらに、異なる電圧の直流電流で動作する機器がある場合には、ＤＣ／ＤＣコンバータ１６は直流電流１５を入力して直流電流１７を生成する。例えば、直流電流１７は設計値８Ｖの直流電流とすることができる。   The basic structure of power supply circuit 2 in the first embodiment is to include a DC battery, power supply switching device 1 and various converters. Here, the case where the storage battery 4 is used as an example of a DC battery will be described. The power supply circuit 2 is connected to a commercial power supply 5 and receives an alternating current 10. The alternating current 10 is converted into a direct current 12 by an AC / DC converter 11. A storage battery 4 is built in the power supply circuit 2, and the storage battery 4 is charged with an alternating current 10 while power is supplied from the commercial power supply 5. Mode switching means such as a mode switch 13 is provided on the output side of the storage battery 4, and a direct current 14 is output from the storage battery 4 during a disaster relief operation. The power source switching device 1 receives the DC current 12 and the DC current 14, selects a DC current having a higher voltage, and outputs the selected DC current 15 as basic DC electricity. For example, although the direct current 12 and the direct current 14 are designed to be a direct current of 24V, depending on the situation and performance of the storage battery 4, the commercial power supply 5, and the AC / DC converter 11, the voltage has an error with respect to 24V. Further, the voltage of the direct current 15 becomes lower than the direct current 12 or the direct current 14 due to the voltage drop of the power supply switching device 1. Therefore, when 24V is required as the DC current 15, the voltages of the DC current 12 and the DC current 14 are designed to be high in anticipation of the voltage drop. Further, when there is a device that operates with direct currents of different voltages, the DC / DC converter 16 inputs the direct current 15 and generates the direct current 17. For example, the direct current 17 can be a direct current having a design value of 8V.

このような電源回路２において、自動販売機３の通常動作時には、交流電流１０，直流電流１５，直流電流１７が出力される。この状態で、交流電流１０は温度調整回路６等を動作させ、直流電流１５はモータ８等を動作させ、直流電流１７は制御部９を動作させ、通常の自動販売機３の動作を行う。また、災害救援動作時には、電源回路２から直流電流１５，直流電流１７が出力される。この状態で、直流電流１５はモータ８等を動作させ、直流電流１７は制御部９を動作させ、商品の無償提供に必要な最低限の機器を動作させる。なお、災害救援動作時には、商品の温度調整等は不要であるので、交流電流１０の供給は不要である。   In such a power supply circuit 2, during the normal operation of the vending machine 3, an alternating current 10, a direct current 15, and a direct current 17 are output. In this state, the alternating current 10 operates the temperature adjustment circuit 6 and the like, the direct current 15 operates the motor 8 and the like, the direct current 17 operates the control unit 9, and the normal vending machine 3 operates. Further, during the disaster relief operation, a DC current 15 and a DC current 17 are output from the power supply circuit 2. In this state, the DC current 15 operates the motor 8 and the like, and the DC current 17 operates the control unit 9 to operate the minimum equipment necessary for providing the product free of charge. In addition, since the temperature adjustment of goods etc. is unnecessary at the time of disaster relief operation, supply of the alternating current 10 is unnecessary.

電源切替装置１は、ダイオード１８とダイオード１９を並列に配置し、ダイオード１８とダイオード１９との出力を互いに接続し、共通出力とするワイヤードオア回路構成とすることができる。そして、ダイオード１８の入力側をモード切替スイッチ１３の一端と接続し、ダイオード１９の入力側をＡＣ／ＤＣコンバータ１１の出力と接続し、出力をＤＣ／ＤＣコンバータ１６の入力側に接続する。この構成にすることにより、直流電流１４をダイオード１８に入力し、直流電流１２をダイオード１９に入力し、直流電流１４および直流電流１２の電圧の高い方の直流電流を直流電流１５として出力することができる。   The power supply switching device 1 can have a wired OR circuit configuration in which the diode 18 and the diode 19 are arranged in parallel, and the outputs of the diode 18 and the diode 19 are connected to each other to provide a common output. The input side of the diode 18 is connected to one end of the mode switch 13, the input side of the diode 19 is connected to the output of the AC / DC converter 11, and the output is connected to the input side of the DC / DC converter 16. With this configuration, the direct current 14 is input to the diode 18, the direct current 12 is input to the diode 19, and the higher direct current of the direct current 14 and the direct current 12 is output as the direct current 15. Can do.

このような構成の電源切替装置１では、通常動作時はモード切替スイッチ１３により蓄電池４からの出力が切断されているため、直流電流１２のみが電源切替装置１に入力し、直流電流１２が直流電流１５として出力する。商用電源５が停電し、災害救援動作を行わせるためにモード切替スイッチ１３により蓄電池４からの出力を接続する場合は、直流電流１４のみが電源切替装置１に入力し、直流電流１４を直流電流１５として出力する。災害救援動作時に商用電源５が回復した時は、直流電流１４および直流電流１２の内、電圧の高い方の直流電流を直流電流１５として出力する。この時、低い方の直流電流が入力されるダイオードは、他方のダイオードの出力側の電圧との電位差により、順方向に電流が流れない。そのため、直流電流１４の方が電圧が低い場合にはダイオード１８に電流が流れず、蓄電池４の電力は消費されない。   In the power supply switching device 1 having such a configuration, since the output from the storage battery 4 is disconnected by the mode switch 13 during normal operation, only the direct current 12 is input to the power supply switching device 1 and the direct current 12 is a direct current. Output as current 15. When the commercial power supply 5 is interrupted and the output from the storage battery 4 is connected by the mode changeover switch 13 in order to perform the disaster relief operation, only the direct current 14 is input to the power supply switching device 1 and the direct current 14 is converted to the direct current. 15 is output. When the commercial power source 5 recovers during the disaster relief operation, the DC current having the higher voltage of the DC current 14 and the DC current 12 is output as the DC current 15. At this time, in the diode to which the lower DC current is input, current does not flow in the forward direction due to a potential difference from the voltage on the output side of the other diode. Therefore, when the direct current 14 has a lower voltage, no current flows through the diode 18 and the power of the storage battery 4 is not consumed.

なお、直流電流１５にキャパシタを接続し、キャパシタの出力によりＡＣソレノイド動作させる構成をさらに設けることもできる。
このように、商用電源５から入力される交流電流１０を直流電流１２に変換し、災害救援動作時に蓄電池４から供給される直流電流１４と直流電流１２との電圧値を比較して、電圧の高い方の直流電流を災害救援動作時に必要な機器の動作電源として用いる。このことにより、災害救援動作時であっても、直流電流１２の電圧が直流電流１４の電圧より高い場合には、直流電流１２を災害救援動作時に必要な機器の動作電源として用いることができ、蓄電池４からの電源供給を停止することができるため、災害救援動作時の蓄電池４の消費を抑制でき、容易に、長期間災害救援動作を継続することが可能となる。 A configuration in which a capacitor is connected to the direct current 15 and an AC solenoid is operated by the output of the capacitor can be further provided.
In this way, the alternating current 10 input from the commercial power source 5 is converted into the direct current 12, and the voltage values of the direct current 14 and the direct current 12 supplied from the storage battery 4 during the disaster relief operation are compared, The higher DC current is used as an operating power source for equipment required for disaster relief operations. Thus, even during a disaster relief operation, when the voltage of the DC current 12 is higher than the voltage of the DC current 14, the DC current 12 can be used as an operation power source for equipment necessary for the disaster relief operation. Since the power supply from the storage battery 4 can be stopped, the consumption of the storage battery 4 during the disaster relief operation can be suppressed, and the disaster relief operation can be easily continued for a long time.

さらに、直流電流１７を交流電流から生成するのではなく、直流電流１５から生成する構成とすることにより、蓄電池４からの直流電流１４を交流電流に変換する必要がなくなり、容易な構成で直流電流１５，直流電流１７を生成することがでる。同時に、電源切替装置１への入力を直流電流とすることにより、電源切替装置１を、ダイオードを用いた容易な回路構成にすることができる。これらのことにより、容易に、長期間災害救援動作を継続することが可能となる。   Furthermore, the direct current 17 is not generated from the alternating current, but is generated from the direct current 15, so that it is not necessary to convert the direct current 14 from the storage battery 4 into the alternating current, and the direct current 17 can be easily configured. 15 and DC current 17 can be generated. At the same time, by making the input to the power supply switching device 1 a direct current, the power supply switching device 1 can have an easy circuit configuration using a diode. By these things, it becomes possible to continue disaster relief operation for a long period of time easily.

また、直流電流を電源切替装置１に入力するため、従来のように、起動時の突入電流対応として、ＤＣ／ＡＣインバータの容量を大きくする必要がなくなる。また、比較的安定した直流電流でなく、常に変化する交流電流の切替えをする場合は、商用電源との電位差を無くす必要がある。この電位差を無くすために、商用電源と同期させる商用電源同期回路や電圧追従回路，無瞬断切替え回路等が必要となる。しかし、本回路は２つの直流電流を切替える構成とすることができるため、回路構成を単純にすることができる。   Further, since a direct current is input to the power supply switching device 1, it is not necessary to increase the capacity of the DC / AC inverter in order to cope with the inrush current at the time of startup as in the prior art. In addition, when switching a constantly changing AC current instead of a relatively stable DC current, it is necessary to eliminate the potential difference from the commercial power source. In order to eliminate this potential difference, a commercial power supply synchronization circuit that synchronizes with the commercial power supply, a voltage tracking circuit, an uninterruptible switching circuit, and the like are required. However, since this circuit can be configured to switch between two direct currents, the circuit configuration can be simplified.

なお、上記実施の形態では、電源切替装置１としてダイオードを用いた容易な回路構成で、直流電流１４および直流電流１２の電圧の高い方の直流電流を直流電流１５として出力するようにしているが、ダイオードを用いたワイヤードオア回路の代わりに、ＦＥＴ等のトランジスタを用いたワイヤードオア回路やその他の電圧比較回路を用いてもよい。
（実施の形態２）
次に図１，図３を用いて、実施の形態２の自動販売機の電源回路の構成について説明する。 In the above-described embodiment, the DC current 14 and the DC current 12 having the higher voltage are output as the DC current 15 with an easy circuit configuration using a diode as the power supply switching device 1. Instead of a wired OR circuit using a diode, a wired OR circuit using a transistor such as an FET or other voltage comparison circuit may be used.
(Embodiment 2)
Next, the configuration of the power supply circuit of the vending machine according to the second embodiment will be described with reference to FIGS.

図３は実施の形態２の自動販売機の電源回路の構成を説明する要部構成図である。
実施の形態２の自動販売機の電源回路の実施の形態１と異なる点は、直流電流１２，直流電流１４と電源切替装置１との間に電源切断回路２０を設ける点である。 FIG. 3 is a main part configuration diagram illustrating the configuration of the power supply circuit of the vending machine according to the second embodiment.
The difference of the power supply circuit of the vending machine according to the second embodiment from the first embodiment is that a power cut-off circuit 20 is provided between the direct current 12, the direct current 14 and the power supply switching device 1.

実施の形態１に示す自動販売機の電源回路では、災害救援動作時に商用電源５が回復し、かつ、直流電流１４の電圧が直流電流１２の電圧より高い場合、電源切替装置１では直流電流１４を選択して出力される。そのため、直流電流１２の電圧がモータ８の動作やＤＣ／ＤＣコンバータ１６の動作に十分な電圧であったとしても、直流電流１４が選択されるため、蓄電池４の電源を消費し続けることになる。   In the power supply circuit of the vending machine shown in the first embodiment, when the commercial power supply 5 recovers during the disaster relief operation and the voltage of the DC current 14 is higher than the voltage of the DC current 12, the power supply switching device 1 uses the DC current 14 Is output. Therefore, even if the voltage of the direct current 12 is sufficient for the operation of the motor 8 or the operation of the DC / DC converter 16, the direct current 14 is selected, so that the power source of the storage battery 4 continues to be consumed. .

実施の形態２の自動販売機の電源回路では、電源切断回路２０を設けることにより、商用電源５側から入力される直流電流１２の電圧を測定し、直流電流１２の電圧が所定の電圧を満たしていれば蓄電池４側から入力される直流電流１４と電源切替装置１との接続を遮断して、蓄電池４が電力を消費することを抑制するものである。   In the power supply circuit of the vending machine according to the second embodiment, by providing the power cut-off circuit 20, the voltage of the direct current 12 input from the commercial power supply 5 side is measured, and the voltage of the direct current 12 satisfies a predetermined voltage. If so, the connection between the direct current 14 input from the storage battery 4 side and the power supply switching device 1 is cut off, thereby suppressing the storage battery 4 from consuming power.

実施の形態２の自動販売機の電源回路でも、実施の形態１と同様に商用電源５から入力された交流電流１０はＡＣ／ＤＣコンバータ１１で直流電流１２に変換される。また、災害救援動作時には、モード切替スイッチ１３が導通されて蓄電池４から直流電流１４が出力する。直流電流１２および直流電流１４は、実施の形態１と異なり、電源切断回路２０に入力され、電源切断回路２０を介して電源切替装置１に入力される。電源切断回路２０は、電圧監視回路２１にて直流電流１２の電圧を測定し、所定の電圧以上の電圧である場合には電源切断スイッチ２２に対して切断信号２３を出力する。また、電圧を測定された直流電流１２は電源切替装置１の一方の入力端子にそのまま入力される。さらに、切断信号２３が入力されると電源切断スイッチ２２は切断状態になる。そのため、電源切断回路２０に入力した直流電流１４は電源切断スイッチ２２が導通状態の時は電源切替装置１の他方の入力端子にそのまま入力され、電源切断スイッチ２２が切断状態の時は電源切替装置１に入力されない。   In the power supply circuit of the vending machine according to the second embodiment, the AC current 10 input from the commercial power supply 5 is converted into the DC current 12 by the AC / DC converter 11 as in the first embodiment. Moreover, at the time of disaster relief operation, the mode switch 13 is turned on and the direct current 14 is output from the storage battery 4. Unlike the first embodiment, the direct current 12 and the direct current 14 are input to the power supply disconnection circuit 20 and input to the power supply switching device 1 via the power supply disconnection circuit 20. The power cut-off circuit 20 measures the voltage of the direct current 12 by the voltage monitoring circuit 21 and outputs a cut-off signal 23 to the power cut-off switch 22 when the voltage is equal to or higher than a predetermined voltage. The DC current 12 whose voltage has been measured is directly input to one input terminal of the power supply switching device 1. Further, when the disconnect signal 23 is input, the power disconnect switch 22 is in a disconnected state. Therefore, the DC current 14 input to the power cut-off circuit 20 is directly input to the other input terminal of the power supply switching device 1 when the power cut-off switch 22 is in a conductive state, and when the power cut-off switch 22 is in a cut-off state. 1 is not entered.

このような構成により、災害救援動作時の電源切替装置１は、商用電源５が回復し、かつ商用電源５側から入力される直流電流１２が所定の電圧以上である場合には常に直流電流１２を直流電流１５として出力し、商用電源５が停電中は常に直流電流１４を直流電流１５として出力し、商用電源５が回復していても直流電流１２が所定の電圧に満たない場合は、直流電流１２または直流電流１４の内の電圧が高い方の直流電流を直流電流１５として出力する。なお、電源監視回路２１での検出に用いる所定の電圧は、モータ８等の機器およびＤＣ／ＤＣコンバータ１６の動作に必要な電圧、すなわち、災害救援動作時に動作することを要する機器の電源として必要な電圧を基準に設定する。   With such a configuration, the power supply switching device 1 during a disaster relief operation always restores the DC current 12 when the commercial power supply 5 is restored and the DC current 12 input from the commercial power supply 5 side is equal to or higher than a predetermined voltage. Is output as a direct current 15 and the commercial power supply 5 always outputs a direct current 14 as a direct current 15 during a power failure. If the direct current 12 does not reach a predetermined voltage even when the commercial power supply 5 recovers, The DC current having the higher voltage of the current 12 or the DC current 14 is output as the DC current 15. The predetermined voltage used for detection by the power supply monitoring circuit 21 is necessary as a voltage necessary for the operation of the device such as the motor 8 and the DC / DC converter 16, that is, a power source of the device that needs to operate during the disaster relief operation. Set the correct voltage as a reference.

このように、商用電源５側から出力される直流電流１２が必要な電圧以上である場合には蓄電池４側から出力される直流電流１４が電源切替装置１に入力することを遮断することにより、災害救援動作を維持しながら、蓄電池４の電力消費を抑制することができ、商用電源５側から出力される直流電流１２の電圧が不足する場合のみに蓄電池４を使用することができるため、容易に、長期間災害救援動作を継続することが可能となる。   In this way, when the direct current 12 output from the commercial power supply 5 side is equal to or higher than the necessary voltage, the direct current 14 output from the storage battery 4 side is blocked from being input to the power supply switching device 1. While maintaining the disaster relief operation, the power consumption of the storage battery 4 can be suppressed, and the storage battery 4 can be used only when the voltage of the direct current 12 output from the commercial power supply 5 side is insufficient. In addition, it is possible to continue the disaster relief operation for a long time.

さらに、仮に従来の交流電流を選択するモード切替スイッチに商用電源側から入力される交流電流の電圧を検出する回路を付加しようとした場合、常に変化する交流電源を切り替えるために回路構成が複雑になり、本実施の形態の電源切断回路のように、容易な回路構成で電源の切替を行うことができない。本実施の形態の電源回路では、交流電流を直流電源に変換してから電源切断回路２０および電源切替装置１に入力するため、容易に電源の切替を行うことができる。   Furthermore, if an attempt is made to add a circuit for detecting the voltage of an alternating current input from the commercial power supply side to a conventional mode changeover switch for selecting an alternating current, the circuit configuration becomes complicated in order to switch the constantly changing alternating current power supply. Thus, the power supply cannot be switched with an easy circuit configuration, unlike the power-off circuit of the present embodiment. In the power supply circuit according to the present embodiment, the AC current is converted into a DC power supply and then input to the power supply disconnect circuit 20 and the power supply switching device 1, so that the power supply can be easily switched.

なお、上述の各実施の形態では、モード切替手段としてモード切替スイッチ１３を用いた場合を述べたが、これに限定されるものではなく、例えば、無線による受信信号により蓄電池４と電源切替装置１の接続、切断を制御する接続制御回路であってもよい。   In each of the above-described embodiments, the mode switching switch 13 is used as the mode switching unit. However, the present invention is not limited to this. For example, the storage battery 4 and the power switching device 1 are received by a wireless reception signal. It may be a connection control circuit for controlling connection and disconnection.

また、上記の各実施の形態では、直流電池として蓄電池３３を用いた場合を述べたが、これに限るものではなく、乾電池などの一次電池であってもよい。   In each of the above embodiments, the case where the storage battery 33 is used as the DC battery has been described. However, the present invention is not limited to this, and a primary battery such as a dry battery may be used.

１ 電源切替装置
２ 電源回路
３ 自動販売機
４ 蓄電池
５ 商用電源
６ 温度調整回路
８ モータ
９ 制御部
１０ 交流電流
１１ ＡＣ／ＤＣコンバータ
１２ 直流電流
１３ モード切替スイッチ
１４ 直流電流
１５ 直流電流
１６ ＤＣ／ＤＣコンバータ
１７ 直流電流
１８ ダイオード
１９ ダイオード
２０ 電源切断回路
２１ 電圧監視回路
２２ 電源切断スイッチ
２３ 切断信号
３０ 電源回路
３１ 商用電源
３２ 交流電流
３３ 蓄電池
３４ 直流電流
３５ ＤＣ／ＡＣインバータ
３６ 交流電流
３７ モード切替スイッチ
３８ ＡＣ／ＤＣコンバータ
３９ ＡＣ／ＤＣコンバータ
４０ 直流電流
４１ 直流電流
４２ 温度調整回路
４４ モータ
４５ 制御部 DESCRIPTION OF SYMBOLS 1 Power supply switching device 2 Power supply circuit 3 Vending machine 4 Storage battery 5 Commercial power supply 6 Temperature adjustment circuit 8 Motor 9 Control part 10 AC current 11 AC / DC converter 12 DC current 13 Mode change switch 14 DC current 15 DC current 16 DC / DC Converter 17 DC current 18 Diode 19 Diode 20 Power disconnection circuit 21 Voltage monitoring circuit 22 Power disconnection switch 23 Disconnect signal 30 Power supply circuit 31 Commercial power supply 32 AC current 33 Storage battery 34 DC current 35 DC / AC inverter 36 AC current 37 Mode changeover switch 38 AC / DC converter 39 AC / DC converter 40 DC current 41 DC current 42 Temperature adjustment circuit 44 Motor 45 Control unit

Claims (4)

商用電源から交流電気を入力して第１の直流電気を生成するＡＣ／ＤＣコンバータと、
第２の直流電気を供給する直流電池と、
前記第１の直流電気または前記第２の直流電気の内の電圧の高い方の直流電気を選択して基本直流電気として出力する電源切替装置と、
通常動作時には前記直流電池から前記電源切替装置への前記第２の直流電気の供給を切断し、災害救援動作時には前記直流電池から前記電源切替装置へ前記第２の直流電気を供給するモード切替手段と
を有し、前記通常動作時は前記交流電気および前記基本直流電気で自動販売機を動作させ、前記災害救援動作時には前記基本直流電気で自動販売機を動作させることを特徴とする自動販売機。 An AC / DC converter that inputs AC electricity from a commercial power source to generate first DC electricity;
A direct current battery for supplying second direct current electricity;
A power source switching device that selects the first DC electricity or the second DC electricity having the higher voltage of the second DC electricity and outputs it as basic DC electricity;
Mode switching means for cutting off the supply of the second DC electricity from the DC battery to the power supply switching device during normal operation, and supplying the second DC electricity from the DC battery to the power supply switching device during a disaster relief operation A vending machine operating with the alternating current electricity and the basic direct current electricity during the normal operation, and operating the vending machine with the basic direct current electricity during the disaster relief operation. . 前記電源切替装置は、２つのダイオードが並列に配置され、出力が共通接続されることを特徴とする請求項１記載の自動販売機。   The vending machine according to claim 1, wherein the power supply switching device has two diodes arranged in parallel and a common output. 前記第１の直流電気の電圧を測定してあらかじめ定めた基準電圧以上である場合には切断信号を出力する電源検出回路と、
前記切断信号を入力して前記第２の直流電気が前記電源切替装置へ入力することを遮断する電源切断スイッチと
をさらに有することを特徴とする請求項１または請求項２のいずれかに記載の自動販売機。 A power supply detection circuit that measures a voltage of the first DC electricity and outputs a disconnection signal when the voltage is equal to or higher than a predetermined reference voltage;
3. The apparatus according to claim 1, further comprising: a power cut-off switch configured to input the cut-off signal and cut off input of the second DC electricity to the power supply switching device. vending machine. 前記交流電気が供給される機器は温度調整回路を含み、前記基本直流電気が供給される機器は前記基本直流電気から前記基本直流電気の電圧より電圧が低い第３の直流電気を生成するＤＣ／ＤＣコンバータとモータを含み、前記第３の直流電気が供給される機器は制御部を含むことを特徴とする請求項１〜請求項３のいずれかに記載の自動販売機。   The device to which the AC electricity is supplied includes a temperature adjustment circuit, and the device to which the basic DC electricity is supplied generates a DC / DC that generates a third DC electricity having a voltage lower than the voltage of the basic DC electricity from the basic DC electricity. The vending machine according to any one of claims 1 to 3, wherein the device including a DC converter and a motor and supplied with the third direct current electricity includes a control unit.
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