JP2012525117A - Power supply device - Google Patents

Abstract

The present invention relates to a power supply device, and more specifically, includes two batteries, and most of the battery power supply is supplied to a load such as a stall or a vending machine, and a part thereof can be charged. The present invention also relates to a power supply device that alternately performs a process of supplying to other batteries with two batteries.
A power supply device according to the present invention is a rechargeable secondary battery that outputs a DC power supply; converts the DC power supply of the battery into AC power, and outputs most of the power to a load; An inverter that outputs a part to a charger; a charger that produces a DC voltage using the AC power output to the inverter and charges the battery; and is interposed between the battery and the inverter and is driven by an input of a DC power source A rotating DC motor; and a generator that operates by rotating the DC motor to generate electricity. The battery includes two batteries, and two inverters that are switched ON / OFF differently from each other after the inverter. While one of the relays is connected and one battery is charged, the other battery can alternately repeat the operation of supplying power to the DC motor. The features.

Description

  The present invention relates to a power supply device. Specifically, the present invention includes two batteries, and most of the battery power supply is supplied to a load such as a stand or a vending machine, and a part thereof can be charged. The present invention relates to a power supply apparatus that alternately performs a process of supplying to other batteries using two batteries.

  In general, a stall is a mobile simple food sales stand made by forming a tent roof on the top of a wheelbarrow, etc., and it is mainly installed at the streets such as intersections and plazas where people often pass. Foods and alcoholic beverages are sold, and passersby are installed in various forms in places where there are many passersby because the tasting is quick and simple.

  Vending machines are unmanned vending machines that store tea, coffee, cans, decorative paper, cigarettes, etc., insert coins and banknotes, and press the selection button to automatically discharge the product. Recently, the types of products sold are diversifying, and the demand is spreading quickly.

  Since vending machines are operated in an unattended sales system, labor costs can be reduced, they can be installed in narrow spaces, and can be operated regardless of time. It is installed in many places.

  However, because stalls and vending machines are installed in places with frequent traffic, it is common to install them outdoors, so it is easy to supply power to stalls and vending machines. It wasn't.

  Therefore, conventionally, an outlet is installed at a point where commercial AC power is supplied, and a plug is inserted into the outlet, and a separate electric cord connected to the plug is extended to a place where a stall or a vending machine is installed. Or, since the outlet of the commercial AC power supply was extended to the place where the stalls and vending machines were installed and the power was supplied, the electric cord was exposed to the outside, the appearance was not good, and there was a risk of tripping It was.

  In addition, since a general commercial AC power supply is used, there is a problem in that a large amount of electricity is charged depending on the amount of power used.

  In addition, in the case of a stand, power is supplied to the stand by producing electricity using an automobile battery and a generator, but there is a problem that it cannot be used for a long time with one full charge.

  The lead storage battery often used as the automobile battery is a storage battery that uses a reversible electrochemical reaction, and uses lead peroxide as a positive electrode, lead as a negative electrode, and dilute sulfuric acid as an electrolyte.

The lead storage battery undergoes a chemical reaction between the electrode material and the electrolyte during discharge, and at the (−) electrode, pure lead atoms (Pb) react with the sulfate ions (SO ₄ ²⁻ ) of the electrolyte. , Sulfuric acid (H ₂ SO ₄ ) dissolves in water and becomes negatively charged sulfate ion and positively charged hydrogen ion (H ⁺ ), and the lead atom combines with sulfate ion and loses two electrons. Lead sulfate (PbSO ₄ ).

  As the discharge progresses, the sulfuric acid is consumed, water is generated, and the sulfuric acid becomes thinner and thinner. Both the negative electrode and the positive electrode are converted to lead sulfate, and the reaction rate decreases.

  On the other hand, an automobile battery shows the power consumption specific to the battery as a product of the electric power and the usage time. However, if an actual battery is used, it cannot be used for a theoretical usage time.

  This is because when the automobile battery is continuously discharged, the (+) electrode and the (-) electrode are changed to lead sulfate, and the reaction rate is reduced, so that the efficiency of the battery is lowered. This is because only a very small part of the power consumption can be used.

  The present invention has been made to solve the above-described problems, and its purpose is to convert a DC power source of a battery into AC power using an inverter, and most of them are stalls, vending machines, etc. The battery is fully charged using commercial AC power by alternately repeating the operation of supplying to the charger that charges the other battery, and the fully charged battery is Since power can be supplied to stalls, vending machines, etc. for a long time, the consumption of commercial AC power due to full battery charging using commercial AC power can be reduced. It is an object of the present invention to provide a power supply device that can reduce costs.

  Another object of the present invention is to supply power to a vending machine or a stand for a long time by using a charged battery, so that an electric cord exposed to the outside is unnecessary, the appearance is good, and the stand is installed. It is an object of the present invention to provide a convenient power supply device because it is not necessary to connect or disconnect the electric cord every time the power cord is removed or removed.

A power supply device according to the present invention is a rechargeable secondary battery that outputs a DC power source;
An inverter that converts the DC power of the battery into AC power, outputs a majority to a load, and outputs a portion to a charger;
A charger for producing a DC voltage with AC power output to the inverter and charging the battery;
A direct current motor interposed between the battery and the inverter and driven and rotated by an input of a DC power source;
A generator that operates by rotating the DC motor and generates electricity;
Two batteries are provided, and two relays that are switched on / off differently from each other are connected to the subsequent stage of the inverter. While one battery is charged, the other battery is a DC motor. The operation of supplying power to the power supply is alternately repeated.

  According to the present invention, a battery charger is driven by using an inverter at the rear stage of one battery to charge another battery, and an operation of supplying power to a vending machine or a load of a stand is alternately repeated. Can fully charge the battery using commercial AC power, and then use this fully charged battery to supply power to stalls and vending machines for a long time. The consumption of commercial AC power due to full charge can be reduced, and the cost of using AC power can be reduced accordingly.

  In addition, by using a charged battery to supply power to vending machines or stalls for a long time, there is no need for externally exposed electrical cords, it looks good, and each time a stall is installed or removed This is convenient because it is not necessary to connect or disconnect the electric cord.

It is a conceptual diagram of the power supply device by this invention. It is a block block diagram of the power supply device shown by FIG. FIG. 3 is another block configuration diagram of the power supply device shown in FIG. 1.

Hereinafter, the configuration and operation of an embodiment of the present invention will be described with reference to the accompanying drawings.
First, in order to help understanding of the present invention, a DC power source and an AC power source will be described. The AC power source refers to a sine waveform current whose magnitude and direction are regularly changed with a certain period. The AC power supply is a contradiction, and it means that it flows only in one direction without deformation in size and direction.

  In the case of the AC power source, it is widely used as a home appliance or other power source necessary for daily life with a relatively large capacity, but in the case of a DC power source, a current generated by a battery or dry cell having a small capacity. Therefore, it is widely used for various electric parts and portable goods of automobiles.

  In the case of a product driven by an AC power supply, it cannot be used immediately due to a lack of capacity of the DC power supply, and is used via an inverter that switches the DC power supply to the AC power supply.

  In the case of the inverter, when an automobile battery is used to drive home appliances such as a television, a VTR, and a notebook personal computer, an inverter for increasing the capacity is used as a medium.

  That is, when a DC power source is input using an inverter, switching to AC is performed, and a daily AC power source such as 220V or 110V is generated so that home appliances can be used.

FIG. 1 is a conceptual diagram of a power supply device according to the present invention.
As shown in the figure, the battery 10 is rechargeable because it can be charged, and outputs a DC power source to the inverter 40.

  The inverter 40 converts DC power into AC power, most of the power is supplied to the load 70 side, and part of the power is supplied to the charger 50.

  The charger 50 produces DC with the AC power of the inverter 40 and charges the battery 10.

FIG. 2 is a block diagram of the power supply apparatus shown in FIG.
As illustrated, the power supply device includes a battery 10, a DC motor 20, a generator 30, an inverter 40, a charger 50, and a switch 60.

  The battery 10 is a rechargeable secondary battery, for example, a secondary battery having a DC12V capacity, and outputs a DC power to a DC motor 20 connected in a subsequent stage.

  The DC motor 20 is configured using a permanent magnet as a stator and a coil as a rotor (electric element), and by switching the direction of the current flowing through the electric element, repulsion of magnetic force, The rotor is rotated by the suction force.

  The subsequent generator 30 is operated by the rotation of the DC motor 20, and generates a voltage of, for example, DC 13 to 14V.

  The inverter 40 is an electrical device for changing direct current (DC) to alternating current (AC), and obtains a desired AC voltage and frequency from the DC voltage of the generator 30 through an appropriate conversion method, switching element, and control circuit. In the present invention, DC 13 to 14 V is converted into AC 2.5 kW power and output.

  A part of the AC power generated by the inverter 40, for example, 70 W, is supplied to the charger 50 to drive the charger 50, whereby the charger 50 generates DC 13-14V, By charging the batteries 10 connected to each other, the battery 10 maintains DC12V.

  The charger 50 serves to charge the battery 10 with electricity, and charges the battery 10 before the stalls and vending machines are installed, thereby charging the electricity necessary for driving the stalls and vending machines. .

  At this time, the sensing sensor 11 connected to the battery 10 senses the voltage of the battery 10 and displays the voltage state of the battery 10 on the display unit 12, and the user displays the voltage of the battery 10 displayed on the display unit 12. Is normal (ie, when DC 12 V is maintained), the switch 60 electrically connected between the inverter 40 and the load 70 is turned on.

  Thereby, for example, 0.8 to 1.2 kW of the AC power output by the inverter 40 is supplied to the vending machine or the load 70 of the stand, and the load of the vending machine or the stand is initially set to about 5 Preheat for a minute.

  After preheating, during the preheating of 0.8 to 1.2 kW, the load 70 is supplied with electric power converted into actual power consumption, for example, 300 to 450 W, which is supplied between the inverter 40 and the load 70. This continues until the electrically connected switch 60 is turned off.

  On the other hand, in order to deal with a case where there is a limit in supplying power only by the battery 10, a power supply extension line (not shown) is connected to an external power source so as to be able to supply by supplying a standby power source. Z)).

  When the battery 10 is fully charged, the AC power supplied to the charger 50 is interrupted, the AC power supplied to the load 70 and the charger 50 is appropriately distributed, or preheated. Control such as converting and supplying the amount of power supplied to the load afterwards can be configured by adding a controller (not shown).

  Reference numeral 41 connected to the inverter 40 is a sensing sensor that senses the remaining output power of the inverter 40, and 42 is a maximum output power display unit that displays a case where the power output from the inverter 40 is maximum. .

  Reference numeral 51 connected to the charger 50 is a sensing sensor for sensing the state of charge, and 52 is a display unit for confirming the charge capacity and the state of charge.

FIG. 3 is another block diagram of the power supply device shown in FIG.
As illustrated, the power supply apparatus includes batteries 10a and 10b, a DC motor 20, a generator 30, an inverter 40, and relays 80a and 80b.

  Each of the batteries 10a and 10b is a rechargeable secondary battery having a DC12V capacity, for example, and alternately outputs DC power to the DC motor 20 connected in the subsequent stage.

  A positive terminal of each of the batteries 10a and 10b is connected to a positive terminal of the DC motor 20, and a negative terminal is connected to a position switching terminal of each of the relays 80a and 80b. Switch position.

  When the position switching terminals of the relays 80a and 80b are switched in directions opposite to each other and the position switching terminal of one of the relays 80a rises and comes into contact with an ON contact formed on the relay 80a, the other relay 80b The position switching terminal is lowered and contacts the OFF contact of the relay 80b.

  Here, it is assumed that an ON contact is formed in the upper part of the relays 80a and 80b and an OFF contact is formed in the lower part.

  The DC motor 20 is configured using a permanent magnet as a stator and a coil as a rotor (electric element). By switching the direction of the current flowing through the electric element, the repulsion of magnetic force and the attractive force As a result, the rotor rotates.

  The positive terminal of the DC motor 20 is connected to the positive terminal of the generator 30, and the negative terminal is connected to, for example, ON contacts of the relays 80a and 80b.

  The subsequent generator 30 is operated by the rotation of the DC motor 20, and generates a voltage of, for example, DC 13 to 14V.

  The negative terminal of the generator 30 is connected to the OFF contacts of the relays 80a and 80b, for example.

  The inverter 40 is an electrical device for changing direct current to alternating current, and obtains a desired voltage and frequency from the DC voltage of the generator 30 through an appropriate conversion method, switching element, and control circuit. Convert ~ 14V into AC 2.5kW power and output.

  The negative terminal of the inverter 40 is connected to other ON contacts of the relays 80a and 80b, for example.

  Of course, as shown in FIG. 2, the inverter 40 is also connected to a load 70, and most of the AC power generated by the inverter 40 is supplied to the load 70, and some of the AC power is relays 80a and 80b. To the charger 50.

  Thus, the ON contact of each of the relays 80a and 80b is connected to the negative terminal of the inverter 40 and the DC motor 20, the OFF contact is connected to the negative terminal of the generator 30, and the position switching terminal is the battery 10a, When the position switching terminals are alternately switched in opposite directions depending on the charge amount of the batteries 10a and 10b and a predetermined time and contact the ON contact of one relay 80a, the other relay 80b Contacts the OFF contact.

  Therefore, while one battery 10a is charged through the charger 50 by the ON contact connection of one relay 80a, the power of the other battery 10b is supplied to the DC motor 20 by the OFF contact connection of the other relay 80b. .

  Conversely, when one relay 80a contacts the OFF contact, the other relay 80b contacts the ON contact, and the battery 10b is charged while the power of the battery 10a is supplied to the DC motor 20. become.

  At this time, the ON / OFF switching time difference between the relays 80a and 80b is preferably 0.04 to 0.12 seconds from the viewpoint that the DC motor 20 can be continuously supplied with power.

  As described above, one battery (for example, 10a) using the two batteries 10a and 10b is repeatedly charged to supply power to the other battery (for example, 10b) while charging. It is possible to supply power to a stall or a vending machine for a long time rather than connecting the battery 10 and using the battery 10 without charging (continuous discharge).

  As a result, the efficiency of the battery gradually declines by reducing the rate at which the (+) and (-) poles change in the process of repeated charge and discharge, and the battery originally has a continuous discharge capacity. Because it can be used more than the time.

  That is, the present invention does not increase the amount of power stored in the battery, but includes a charger and a relay, and alternately charging and discharging the amount of power originally stored in the battery from the time of continuous discharge. It can be used many times, and the time that can be used with one full battery charge can be increased.

  In this way, after fully charging two batteries using commercial AC power of a general household, the battery usage time can be increased without supplying external power. Can be reduced, the consumption of commercial AC power can be reduced, and the cost can be reduced.

DESCRIPTION OF SYMBOLS 10 Battery 20 DC motor 30 Generator 40 Inverter 50 Charger 60 Switch 70 Load 80 Relay

Claims (6)

A rechargeable secondary battery that outputs a DC power source;
An inverter that converts the DC power of the battery into AC power, outputs a majority to a load, and outputs a portion to a charger;
A charger for producing a DC voltage with AC power output to the inverter and charging the battery;
A direct current motor interposed between the battery and the inverter and driven and rotated by an input of a DC power source;
A generator that operates by rotating the DC motor and generates electricity;
Two batteries are provided, and two relays that are switched on / off differently from each other are connected to the subsequent stage of the inverter. While one battery is being charged, the other battery is a direct current A power supply device characterized by alternately repeating the operation of supplying power to the motor.   The ON contact of each relay is connected to the negative terminal of the inverter and the DC motor, and the OFF contact is connected to the negative terminal of the generator. The position is switched in the opposite direction to contact the ON contact or the OFF contact. The power supply apparatus according to claim 1, wherein the position switching terminal is connected to a negative terminal of each battery.   The power supply apparatus according to claim 1, wherein the ON / OFF switching time difference between the relays is 0.04 to 0.12 seconds. The battery is connected to a sensing sensor that senses the voltage of the battery and a display unit that displays the battery voltage state sensed by the sensing sensor.
A switch is electrically connected between the inverter and the power supply unit,
The power supply device according to claim 1, wherein when the voltage state displayed on the display unit is normally confirmed, the switch is turned on and AC power is supplied to the load. The inverter is connected to a sensing sensor that senses the output power residual amount of the inverter and a display unit that displays the maximum output power output by the inverter,
The power supply apparatus of claim 1, wherein the charger is connected to a detection sensor that detects a charging state and a display unit that displays a charging capacity and a charging state. The power supply according to claim 1, wherein a power supply extension line connected to an external power supply and supplied with power is added to the battery so as to be supplied with a standby power supply. Feeding device.

Images