JPH0530028B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel battery that integrally combines a solar cell and a storage battery that is charged by the output of the solar cell.

[Conventional technology]

Recently, various small electric devices such as battery razors, pocket radios, and stationary lights that use solar cells have come into use, but most of them have solar cells integrated into a part of the outer surface of the electric device; The storage battery, which is charged by the output of the battery, is stored in a battery storage section provided elsewhere within the electrical device.

[Problem to be solved by the invention]

However, in the above-mentioned conventional devices, it is necessary to separately provide a place for installing a solar cell and a place for storing a storage battery in one electric device, and it is also necessary to connect the solar cell and the storage battery storage part. This has caused the structure of electrical equipment to become more complicated and the number of assembly steps to be increased.

In addition, in order to charge this type of electrical equipment, the electrical equipment must be placed in a place exposed to direct sunlight because the solar cell is integrated into it. For this reason, there has been a problem in that the plastic exterior body of the electrical equipment is susceptible to deterioration due to ultraviolet ray irradiation and high temperature of the atmosphere during light reception.

Therefore, as shown in Japanese Utility Model Application Publication No. 50-59528, for example, a system has been proposed in which the storage battery and the solar cell are handled as a set by arranging the solar cell in an exposed manner on the outer surface of the case that houses the storage battery. has been done. However, in this case, the case for setting is set exclusively for the device used, and therefore lacks versatility to other devices.
Furthermore, each time the device is used, the device and the lead wire on the set case side must be reconnected, which is troublesome.

An object of the present invention is to facilitate the use of solar cells in small electrical equipment by storing solar cells and storage batteries in an outer container, and to simplify the structure and assembly of the equipment.

Another object of the present invention is to suppress the temperature rise of the storage battery within the outer container as much as possible to prevent a decrease in charging efficiency and to prevent electrolyte leakage.

[Means to solve the problem]

As shown in the figure, the battery of the present invention has a solar battery 6 integrally attached to a part of the outer peripheral wall of the storage battery 5 for charging the storage battery 5, and a storage battery 5 with the solar battery 6 inside the outer container 4. , an anode terminal 3 connected to the anode side of the storage battery 5 is provided on the anode terminal plate 7 at one end of the outer container 4, and a cathode terminal plate 8 at the other end of the outer container 4, A cathode terminal 2 connected to the cathode side of the storage battery 5 is provided, at least a portion of the outer container 4 facing the light-receiving surface 10 of the solar cell 6 is formed transparent, and the storage battery 5 including the solar cell 6 and the outer container 4, a space is formed around the entire circumference, and the distance A between the light-receiving surface 10 of the solar cell 6 and the inner wall surface portion of the outer container 4 facing it is determined as described above. Distance B between the outer surface of the storage battery 5 opposite to the light-receiving surface 10 and the inner wall surface portion of the outer container 4 facing this
The requirement is that it be set larger than .

[Effect]

According to the above configuration, when this battery is used as a power source for a small electric device, it is not necessary to separately incorporate a solar cell and a storage battery into the device as in the past, and the battery is installed in the only battery compartment in the device. It is sufficient to simply store this cylindrical battery in the battery compartment, and the wiring work between the solar battery and the battery compartment can also be omitted, so small electric devices with a built-in battery that use solar batteries as a charging source also require this assembly and structure. can be simplified.

Furthermore, during charging, the battery 1 itself is exposed to direct sunlight. At this time, the outer container 4 receives direct sunlight and is heated. However, since a space is formed around the entire circumference of the storage battery 5 including the solar cell 6 in the outer container 4,
This space serves as a heat insulator and prevents heat from the outer container 4 from being directly transmitted to the storage battery 5. This space is formed in an annular shape around the entire circumference, so
A part around the storage battery 5 is not locally heated strongly.

The light-receiving surface 10 of the solar cell 6 directly receives sunlight through the transparent wall of the outer container 4. However, the above-mentioned space is limited to the light receiving surface 10 and the outer container 4 facing thereto.
Since the distance between the light receiving surface 1 and the inner wall surface portion of the space is set larger than that of the opposite side, the light receiving surface 1
The buffering effect also prevents the portion facing 0 from becoming abnormally high in temperature.

〔Example〕

An embodiment of the battery according to the present invention will be described based on FIGS. 1 and 2.

In FIGS. 1 and 2, 1 is a battery of the present invention, which includes a cylindrical outer container 4 having cathode terminals 2 and 3, a storage battery 5 built in the outer container 4, and a solar cell. It consists of 6.

The outer container 4 is formed into a cylindrical shape from a transparent plastic material such as ABS, silicone, acrylic, acrylic styrene, or weather-resistant polycarbonate, and its entire surface is made of a transparent surface.

One end opening of this outer container 4 is sealed with an anode terminal plate 7 having an anode terminal 3 in the center, and the other end opening is sealed with a cathode terminal plate 8 having a cathode terminal 2 in the center. The anode terminal 3 and cathode terminal 2 are provided with conical projections 3a, 2a inside the terminal plates 7, 8, respectively.
has.

As the battery 5, for example, a cylindrical alkaline storage battery smaller than the outer container 4 is used. The storage battery 5 is housed offset from the central axis of the outer container 4 in the left-right direction, as shown in FIG. More specifically, each off-center eccentric portion at the left and right anode side ends and cathode side ends of the storage battery 5 in the outer container 4 can be rotated by the anode protrusion 3a and the cathode protrusion 2a on the outer container 4 side, respectively. It is engaged and supported by
Between the inner circumferential wall surface of the outer container 4 and the storage battery 5 including the solar cell 6, an annular space is formed along the entire circumference in the left and right longitudinal direction.

The solar cell 6 has a solar cell element 9 covered with a light-receiving surface 10 made of transparent resin and has an arc-shaped cross section.
Attach it to a part of the outer peripheral wall along the left and right longitudinal directions. Further, the anode terminals of the solar cell 6 and the storage battery 5 are connected to each other by a lead wire 12 via a backflow prevention diode 11, and the cathode terminals are connected to each other by a lead wire 1.
Connected by 3.

When the solar cell 6 and the storage battery 5 are integrated in this way, when charging, the outer container 4 is
When it is laid down on its side, the storage battery 5 and the solar cell 6 can be raised up so that the light-receiving surface 10 always faces upward. Due to this rising, the distance A between the upward facing light-receiving surface 10 of the solar cell 6 and the upper inner wall surface portion of the outer container 4 that faces it is It is always set larger than the distance B between the outer surface and the inner wall surface portion of the outer container 4 facing thereto.

The battery 1 configured in this way is placed in the battery compartment of various small electric devices and used as a power source for that device.In order to charge the battery 1, it is necessary to take out only the battery 1 from the battery compartment and place it in the sunlight. If the solar cell 6 and storage battery 5 are placed sideways on a desk or the like, the integrated solar cell 6 and storage battery 5 will rise up using the eccentric supports at both ends as fulcrums, with the light-receiving surface 10 facing upward. By facing the sun through the transparent surface of the outer container 4 facing the sun, the output current of the solar cell 6 charges the storage battery 5 through the backflow prevention diode 11. After charging, this battery 1 can be stored in the battery storage section and reused as a power source for the device.

Note that instead of the above embodiment, the integrated solar cell 6 and storage battery 5 are fixedly built into the outer container 4, and a weight is attached to the side symmetrical to the light-receiving surface 10 of the container 4 for charging. In some cases, even if the outer container 4 is turned sideways on a desk or the like, the outer container 4 itself immediately
It is also possible to stand up so that 0 is in an upward posture.

In addition to making the entire outer container 4 transparent,
Only a part of the container 4 may be formed into a transparent light-transmitting surface, and the light-receiving surface 10 of the solar cell 6 may be opposed to this light-transmitting surface.

Further, as shown in FIG. 3, the outer container 4 may be formed into a cylindrical polyhedral outer surface to prevent rolling.

〔Effect of the invention〕

As explained above, in the present invention, one battery 1 is constructed by housing the storage battery 5 and the solar cell 6 integrally attached thereto in the outer container 4. Therefore, even when this battery 1 is used as a power source for various small electric devices, it is easy to handle by simply inserting and removing it into the only battery compartment provided in the device. Since the wiring work between the storage battery compartments can be completely omitted, it is possible to simplify the assembly and structure of this type of small electrical equipment with a built-in storage battery that uses a solar cell as a charging source.

In addition, the external shape of this battery 1 is, for example, a general JIS
It can also be made almost the same as the standard shape of dry cell batteries established in the standards, and can be used as a replacement for dry cell batteries in small electrical equipment.

Furthermore, since it is only necessary to place the battery 1 in a place exposed to direct sunlight during charging, it is possible to effectively prevent the small electric device from deteriorating due to ultraviolet rays, and to extend its life.

In particular, both batteries 6 and 5 are housed in the outer container 4 in order to make the solar cell 6 and the storage battery 5 versatile for use in battery compartments of various small electric devices, and to make it easy to take them in and out. In this case, the outer container 4 becomes heated when exposed to sunlight and charged.
Further, the temperature inside the container 4 rises, causing the temperature of the storage battery 5 to rise. However, since a space is formed along the entire circumference between the outer circumference of the storage battery 5 including the solar cell 6 and the inner circumferential wall surface of the outer container 4, heat from the outer container 4 is directly transmitted to the storage battery 5. This can be prevented by the heat insulation effect of the space. Moreover, the light receiving surface 10 of the solar cell 6
receives direct sunlight, but the distance A between the light-receiving surface 10 and the inner wall surface of the outer container 4 facing it
is set to be larger than the distance B between the outer surface of the storage battery 5 opposite to the light-receiving surface 10 and the inner wall surface of the outer container 4 facing thereto, so that the space extends over the entire circumference. Coupled with the fact that the space is formed in a straight line, there is no possibility that the temperature locally increases, especially in the part of the space facing the light-receiving surface 10. Therefore, there is an advantage that charging failure and electrolyte leakage due to excessive temperature rise of the storage battery 5 can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a battery showing one embodiment of the present invention, and FIG. 2 is a longitudinal sectional side view. FIG. 3 is a longitudinal sectional side view of a battery showing another embodiment of the present invention. 2... Cathode terminal, 3... Anode terminal, 4... Outer container, 5... Storage battery, 6... Solar cell, 10...
The light-receiving surface of a solar cell.

Claims (1)

[Claims] 1. A solar cell 6 for charging the storage battery 5 is integrally attached to a part of the outer peripheral wall of the storage battery 5, and the storage battery 5 with the solar cell 6 is installed inside the outer container 4.
A storage battery 5 is stored on the anode terminal plate 7 at one end of the outer container 4.
An anode terminal 3 is provided to be connected to the anode side of the storage battery 5.
A cathode terminal 2 is provided to be connected to the cathode side of the outer container 4. At least a portion of the outer container 4 facing the light-receiving surface 10 of the solar cell 6 is formed transparent, and the storage battery 5 including the solar cell 6 and the outer container A space is formed between the light receiving surface 10 of the solar cell 6 and the inner wall surface of the outer container 4 facing the solar cell 6 over the entire circumference. is set larger than the distance B between the outer surface of the storage battery 5 on the opposite side and the inner wall surface of the outer container 4 facing thereto.