JPH11225447A - Solar cell charging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform charging at all times in a charging apparatus which uses the generated electric power of a solar cell. SOLUTION: A solar cell charging apparatus is constituted of a power- generation device 1, in which a solar cell 11 is arranged and of a charging apparatus body 2. The charging apparatus body 2 is provided with an electricity storage device 21, to which the generated electric power of the solar cell 11 arranged in the power generation device 1 is input and in which the electric power is stored, with a holder part 23 which is used to attach a storage battery 3 to be charged and with a control circuit 22, by which electric power stored in the electricity storage part 21, is supplied to the storage battery 3 attached to the holder part 23 and by which storage battery 3 is charged with prescribed electric power. The electric power of the solar cell 11 generated during the daytime is stored one in the electricity storage device 21, and the storage battery 3 is charged with the stored electric power. As a result, when electric power is stored in the electricity storage device 21, charging can be performed at all times, irrespective of the time such as night or the like, and the charging operation can be performed at all times, irrespective of the climate or season, such as cloudy weather, winter or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar battery type charging device for charging a small storage battery used as a power source of a portable electric product.

[0002]

2. Description of the Related Art For example, a power source of a portable electric product such as a portable personal computer, a portable telephone, a siever, a boombox, etc.
A rechargeable battery such as an i-Cd battery, that is, a small storage battery is often used. To charge the storage battery with power,
Generally, electric power from a commercial power supply is used. However, since charging cannot be performed in a place where commercial power is not available, there is a demand for a charging device that can be charged in a place where commercial power is not available.

[0003]

Therefore, a charging device using the power generated by a solar cell has been considered so that it can be used in places where commercial power is not available. However, conventional solar battery-type charging devices are designed to charge the solar battery by directly inputting the generated power to the storage battery, so that it can be charged during the daytime when the solar battery generates power by being irradiated with sunlight. However, charging is not possible at night when the solar cell does not generate electric power, and the power generated from the solar cell may be significantly reduced even in the daytime, such as in cloudy weather or winter when the sunlight is not so strong. However, in such a case, there is a problem that the charging ability is reduced.

An object of the present invention is to solve the above-mentioned problems in a charging device utilizing the power generated by a solar cell, and to provide a solar cell-type charging device which can be charged at any time.

[0005]

In order to achieve the above object, the present invention has the following arrangement. That is, the solar battery-type charging device according to the present invention has a power generation device in which a solar cell is arranged, and a charging device main body, and the charging device main body receives power generated by the solar cell arranged in the power generation device, A power storage device for storing power, a holder for mounting a storage battery to be charged, and a control circuit for supplying power stored in the power storage device to the storage battery mounted on the holder and charging the storage battery with predetermined power. It is characterized by having.

According to the present invention, the power generated by the solar cells in the daytime is temporarily stored in the power storage device, and the stored power is used to charge the storage battery. It can be charged at any time regardless of time, and can be charged at any time regardless of weather or weather, such as cloudy weather or winter.

[0007] The solar cell-type charging device according to the present invention comprises:
Although it may have only a charging function,
If an output terminal for extracting the electric power stored in the power storage device to the outside is provided and a power supply function for directly supplying electric power from the output terminal to an electric appliance is provided, the power storage device can be used as a power supply, and the range of use is wide. Become.

In the present invention, if a solar meter for measuring the intensity of sunlight is provided in the power generation device or the charging device body, the sunlight is most strongly measured while looking at the solar meter. The direction of the solar cell of the power generation device can be adjusted to the direction in which it is received, and the power generation efficiency of the solar cell can be increased. The solar meter may be one that measures the power generated by the solar cell, or may be one such as an illuminometer using CdS, selenium, or the like, and is not particularly limited. .

In the present invention, the power generating device may be mounted on the charging device main body. However, the power generating device is provided separately from the charging device main body, and the power generated by the solar cells disposed in the power generating device is connected to an external connection. If the power is input to the power storage device of the charging device main body via the cord, the power generating device can be installed at a position where the sunlight is most strongly received, regardless of the position where the charging device main body is installed. The power generation efficiency of the solar cell can be increased.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. First, FIG. 1 is a perspective view showing an embodiment of a portable solar battery type charging device according to the present invention, and FIG. 2 is a block diagram showing the operation of FIG.

In the drawings, reference numeral 1 denotes a power generation device, 2 denotes a charging device main body, and 3 denotes a rechargeable battery such as a Ni-Cd battery to be charged by the solar cell type charging device, that is, a portable personal computer or a mobile phone. , A small storage battery used as a power source for portable electrical products such as a radio and a radio cassette player.

The power generating device 1 is mounted on the upper portion of the charging device main body 2 so as to be tiltable and change its tilt angle.
On its surface, a solar cell 11 which receives sunlight and generates electric power is arranged. The solar cell 11 is generally made of a single crystal or polycrystal silicon crystal, amorphous, or a compound semiconductor, but is not particularly limited.

The charging device main body 2 receives the power generated by the solar cell 11 disposed in the power generation device 1, and stores a power storage device 21 such as a lead storage battery or an electric double layer capacitor in which the power is stored, and a control circuit 22. A holder 23 for accommodating a storage battery 3 to be charged and stored therein, a solar light meter 24 for measuring the intensity of sunlight, and a power storage device 2
An output terminal unit 25 for taking out the electric power stored in the unit 1 to the outside is provided on the outer surface.

With this configuration, when power is generated in the solar cell 11 arranged in the power generation device 1 by daytime sunlight irradiation, the generated power is transmitted through a backflow prevention diode (not shown) or the like. The power is input to the second power storage device 21, and the power is stored in the power storage device 21.

The power generator 1 is mounted on the upper part of the main body 2 of the charging device so that the inclination angle can be changed, and the solar meter 24 is provided. The direction and the inclination angle of the solar cell 11 of the power generation device 1 can be adjusted to the direction of the strongest reception, so that the generated power of the solar cell 11 can be set to be the highest.
It is preferable that the power storage device 21 is always charged to the full capacity so that the power storage device 21 can be used at any time.

In order to charge a small storage battery 3 used as a power source for a portable electric product such as a portable personal computer, a mobile phone, a siever, a radio-cassette, etc., the storage battery 3 to be charged is attached to the holder 23. Control circuit 22
Thus, the power stored in power storage device 21 is supplied to storage battery 3, and the predetermined power is charged to storage battery 3. The storage battery 3 to be charged is not particularly limited, and may be a card storage battery or a round bar storage battery.

When this solar cell type charging device is used as a power supply device, a portable personal computer is
Connect portable appliances such as mobile phones, shavers, boomboxes, etc., and supply power directly to the portable appliances. The power output from the output terminal unit 25 may be DC or may be converted to AC.

In the above embodiment, the power generator 1 is a charging device main body 2
However, the power generator 1 may be provided separately from the charger main body 2 as shown in FIG. That is, in the embodiment of FIG. 3, the power generation device 1 is provided separately from the charging device main body 2, and the generated power of the solar cell 11 arranged in the power generation device 1 is supplied to the power storage device of the charging device main body 2 via the external connection cord 12. 21 is input, and the rest is almost the same as the above embodiment. By providing the power generation device 1 separately from the charging device main body 2, the power generation device 1 can be installed away from the position and direction in which sunlight is most strongly received, so that the power generation efficiency of the solar cell 11 can be increased. . In this case, the power generation device 1 is preferably configured to be compactly foldable so that it can be attached to or stored in the charging device main body 2 as shown in FIG. 3, for example. The external connection cord 12 may be connected to the charging device main body 2 by a connector, and the power generation device 1 may be electrically separated from the charging device main body 2 when the connector is disconnected.

[0019]

According to the present invention, the power generated by the solar cells during the daytime is temporarily stored in the power storage device, and the storage battery is charged with the stored power. It can be charged at any time regardless of time, such as at night, and can be charged at any time regardless of weather or weather, such as cloudy weather or winter.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a block diagram showing the operation of FIG.

FIG. 3 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power generation device 11 Solar cell 12 External connection cord 2 Charging device main body 21 Power storage device 22 Control circuit 23 Holder part 24 Sunlight meter 25 Output terminal part 3 Storage battery

Claims (4)

[Claims] 1. A power generation device having a solar cell disposed therein, and a charging device main body, wherein the power generation device receives power generated by the solar cell disposed in the power generation device and stores the power. Characterized by having a holder for mounting a storage battery to be charged, and a control circuit for supplying power stored in a power storage device to the storage battery mounted on the holder and charging the storage battery with predetermined power. Solar powered charging device. 2. The solar battery type charging device according to claim 1, wherein the charging device main body is provided with an output terminal portion for taking out the electric power stored in the power storage device to the outside. 3. The solar battery type charging device according to claim 1, wherein a solar meter for measuring sunlight is provided in the power generation device or the charging device main body. 4. A power generation device is provided separately from a charging device main body, and generated power of a solar cell disposed in the power generation device is:
4. The solar battery type charging device according to claim 1, wherein the power is input to the power storage device of the charging device main body via an external connection cord.