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INVENTION
Patent of the Russian Federation RU2293416
AUTONOMOUS VOLTAGE SOURCE
The name of the inventor: Evgeny Vladislavovich Dvoichenko (RU); Grishin Mikhail Viktorovich
The name of the patent owner: Evgeny Vladislavovich Dvoichenko
Address for correspondence: 121165, Moscow, PO Box 15, LLC "PPF-YUSTIS", Pat. L.S. Pilishkina, registration number 895
Date of commencement of the patent: 2005.10.26
The invention relates to the field of electrical engineering and can be used to recharge mobile phones in an autonomous mode. The technical result is the ability to start and finish charging the battery in a sparing mode, and recharging the mobile phone - both in sunlight and in total darkness, providing a one-way power supply from the photoelectric converter (FEP) to the battery. In an autonomous voltage source, the diode-condenser unit consists of a capacitor connected in parallel to the FEP and two fast-acting Schottky diodes, the first of which is connected in series between the FEP and the capacitor, and the second one is connected between the capacitor and the battery on the side of its positive terminal.
DESCRIPTION OF THE INVENTION
The invention relates to devices for storing and conserving electric power, namely for recharging mobile phones in an autonomous mode.
The device Battery Saver Pro 5 Watt is known for recharging mobile phones, containing a photoelectric converter (Internet www.vampirchik-sun.nm.ru).
The disadvantage of this device is its large size, inconvenience in transportation and use because of its large area.
The closest analogue of the proposed device is the Violetta Solargear device for recharging mobile phones, containing a photoelectric converter, a battery, an electronic circuit for increasing the voltage (Internet www.vampirchik-sun.nm.ru).
The disadvantage of this device is unreliability, inaccessibility to a wide range of consumers, inability to work in the absence of bright light.
The technical result of the invention is to simplify the circuit while simultaneously providing the required power for charging in the absence of bright light. The invention provides an opportunity to start and end charging of the battery of the charger in a sparing mode, and charging the mobile phone battery in both sunlight and in total darkness, provides a one-way power supply from the photoelectric converter FEP to the battery.
The technical result is achieved due to the fact that the autonomous voltage source comprises a photoelectric converter (FEP) connected to the battery via a diode-condenser unit, the diode-condenser unit being made of a capacitor connected in parallel to the FEP and two fast-acting Schottky diodes ensuring the absence Feedback, one of which is connected in series between the FEP and the connection point of the positive terminal of the capacitor, and the second - between the same point (capacitor) and the battery on the side of its positive terminal.
In addition, a Schottky diode can be connected between the battery and the positive voltage terminal.
In addition, parallel to the battery, the LED can be switched on via a switch.
In addition, it can contain a voltage regulator.
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1 shows a diagram of an autonomous voltage source; FIG. 2 shows the same with a Schottky diode; FIG. 3 is the same, with an economical light source; Fig. 4 is the same with the voltage regulator.
The autonomous power source (FIG. 1) comprises a photoelectric converter (FEP) 1 connected to a battery 2 through a diode-condenser unit consisting of a capacitor 3 connected in parallel to the FEP 1 and two fast-acting Schottky diodes 4 and 5, the first of which is switched on Between FEP 1 and capacitor 3, and the second - between capacitor 3 and battery 2 from the side of its positive terminal. Parallel to the battery 2, the LED 6 is switched on via the switch 7. A Schottky diode 8 (FIG. 2) can be connected between the battery 2 and the positive voltage terminal. And the autonomous power source may comprise a voltage regulator 9 (FIG. 4) for sufficient charging voltage and current to be supplied to the battery 2 in the case of applying a FEP with a low output voltage not sufficient to qualitatively charge the battery.
After the charging current starts to flow from the FEP 1, the capacitor 3 and then the battery 2 are first charged. After stopping the charging current from the FEP 1, the capacitor 3 begins to discharge and give its capacitance through the diode 5 to the battery 2, i.e. It acts as an intermediate capacitive buffer with one-way communication. Diode 4 provides no feedback between the capacitor 3 and the FEP 1, and the diode 5 ensures that there is no feedback and the discharge of the battery 2 through the capacitor 3.
FEP 1 in the proposed charger is designed for an operating voltage of 6.5 V and a current of not less than 100 mA, provided that the solar illumination power is not less than 800 W / m2.
The device is compact, has a small weight and its dimensions do not exceed 135 × 65 × 22 mm.
It is functional for charging any mobile phones both in sunlight and in total darkness.
Used batteries of the standard type nickel cadmium or nickel metal hydride - type AAA and quite cheap.
When charging from the described device of mobile phones it does not matter whether the batteries are fully charged in the charger or not, Even their minimum voltage and power are higher than those of the batteries in the mobile phone.
The use of a diode-condenser unit in the charging circuit between the FEP 1 and the battery 2 of the diode-condenser unit allows to significantly increase the service life of the battery, and, as a result, the entire product as a whole.
The voltage outputted by the FEP 1 through the diode-condenser unit is supplied to the battery 2 and does not exceed the maximum permissible voltage required for charging, i.e. The battery can not be recharged, which significantly affects the service life.
The use of an additional LED 6 in Fig. 3 helps to illuminate when the mobile phone is connected in the dark, and this function can be successfully used as a local illumination and for lighting purposes.
When using low-voltage FEP 1 and low efficiency in the charger, a voltage regulator 9 is used to provide sufficient charging voltage and current to be supplied to the battery 2.
Batteries in the mobile phone after charging from the proposed charger have a voltage slightly higher than the allowable minimum discharge voltage of the battery of the charger itself, therefore, the latter do not have a full discharge.
CLAIM
An autonomous power source comprising a photoelectric converter connected to a battery, characterized in that the photocell is connected to the battery via a diode-condenser unit consisting of a capacitor connected in parallel to the FEP and two fast-acting Schottky diodes providing no feedback One of which is connected between the FEP and the capacitor, and the second - between the capacitor and the battery on the side of its positive terminal.
2. The voltage source according to claim 1, characterized in that an additional Schottky diode is connected between the battery and the positive voltage terminal.
3. The voltage source according to claim 1, characterized in that the LED is connected in parallel with the battery via a switch.
4. The voltage source according to claim 1, characterized in that a step-up voltage regulator is included between the FEP and the diode-capacitor unit.
print version
Publication date 17.02.2007gg
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