JP2000323113A - Power storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To store power for a residence by utilizing an unused space by receiving a storage battery for feeding stored commercial power to a load apparatus in a space under the floor of the residence. SOLUTION: Commercial power is distributed to a storage battery 5 through a distribution board, a system switching device and a bidirectional inverter. At least one basic vent hole 14 having a size capable of getting in and out the storage battery 5 to be received in a space 17 under a floor and having a removable metal net or the like mounted is formed at the rising part of the base part 13 of a residence. The storage battery 5 is installed on a mounting and traveling style pedestal 22 having a traveling means such as casters 23, and repair and replacement are carried out by drawing out the storage battery 5 together with the pedestal 22 from the base vent hole 14 when the storage battery 5 fails. The ground 12 under the floor on which the pedestal 22 travels is desirably covered with leveling concrete or the like for the purpose of the traveling of the pedestal 22 and moisture-proofing. It is also preferable that a floor opening part having a door is formed in the floor 16 and the storage battery 5 is received and installed below the floor opening part by mounting it on the pedestal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power storage system for a house in which a storage battery for storing commercial power is stored in a space below the floor of the house.

[0002]

2. Description of the Related Art In recent years, in the field of industry, with the increase of devices and equipment used for comfort of work environment, automation and labor saving in production department, increase of various information equipment in office department, and the like. Electricity consumption has increased significantly. On the other hand, with the development of comfortable living environments such as home electronics, automation, and labor saving, the use of many AV and information devices, lighting equipment, large refrigerators, fully automatic washing machines, drying The use of electric appliances and air-conditioning equipment has progressed, and with this, the amount of electric power used in ordinary households has greatly increased.

In order to respond to the increasing demand for electric power, electric power companies that supply electric power are particularly required to provide full operation of production facilities and cooling facilities at each business site in fine weather in summer, and to provide cooling facilities for ordinary households. At the peak of the so-called electric power demand that is fully operated, the power generation facilities are operated at full capacity to respond to this. As described above, power companies that supply power are required to have large-scale facilities to meet peak demand for power, but there are many restrictions on the location of power plants and environmental issues. There are conditions, and it is no longer possible to meet the increasing power demand by providing facilities for producing power at the peak of the increasing power demand.

[0004] For this reason, in the industry, the work time is shifted in order to use inexpensive commercial nighttime electric power, heat storage using inexpensive commercial nighttime electric power, the use of cooling / heating equipment by electric power storage, and the effective use of electric energy. In addition to energy saving measures such as the use of electrical equipment with low power consumption, households are also using energy-saving measures such as the use of inexpensive commercial night power. A large-capacity storage battery is used to store the power, and the power stored in the storage battery is used during a relatively expensive daytime power period to reduce the power rate.

The use of such a distributed power storage system to store inexpensive nighttime power in a storage battery and use the stored power at the peak of daytime power demand reduces the power consumption for consumers. Power supply companies that supply electricity do not need to have excessive facilities for peak power demand during the daytime, so the power demand is dispersed between the daytime and nighttime, and the power load is reduced. It can play a role in leveling.

[0006] As an example of a distributed power storage system for a house in which this large-capacity storage battery is used to store inexpensive commercial power at night and use it during the day,
In order to store a large number of storage batteries for storing electricity in a house, the space formed by the stairs from the lower floor to the upper floor and the outer wall and side walls of the house is partitioned by appropriate partitions to form a storage space for the storage batteries. 2. Description of the Related Art A residential power storage system in which a storage battery is housed in a space is known (Japanese Patent Application Laid-Open No. 61-1986).
-190226).

[0007]

In the above-mentioned conventional power storage system for a house, the space under the stairs is used as a storage space for the storage battery. Because of the necessity of taking a large space for living in, it is difficult to secure the storage space for the conventional closet, etc., and therefore, instead of the conventional closet, the space under the stairs is used as a storage space such as a storage room. There are many cases.

However, in order to use the space under the stairs as a storage space for the storage battery, it is not easy to secure another storage space as a storage, and the space under the stairs is originally used as a storage space for the storage battery. It is not considered to be used, so the large and large storage batteries stored here, especially large lithium secondary batteries, which are being studied recently, also generate heat, and how to radiate and cool them It is also important to keep ventilation in the storage space of the storage battery under the stairs, because cooling of the lead storage battery due to heat generated by charging and hydrogen gas generated by leaking dilute sulfuric acid gas and charging also occur. It is necessary to efficiently cool the gas and to quickly exhaust these gases. For this reason, it is necessary to provide a ventilation hole for new ventilation on the outer wall and floor of the house, and it is difficult to provide a new opening on the outer wall and floor of an existing house regardless of the time of new construction of the house.

Accordingly, the present invention has been made in view of the above problems, and even in a house having a small site or effective living area, it has not been effectively used as a dead space of a conventional house without providing a special installation space. By using the space under the floor as a storage battery installation location, this unused space can be effectively used and used as a storage battery installation location.

[0010] Further, even in an existing house, the existing opening such as the base ventilation hole of the base of the house and the floor opening of the underfloor storage can be used as it is without any processing, so that it does not hinder any daily life. The storage space for the storage batteries can be secured without the need for ventilation, and the underfloor space is ventilated by natural ventilation without adding new equipment for ventilation under the floor, so that ventilation is good and the ambient temperature is relatively low. Since the battery power is low, heat and cooling of the stored battery and discharge of generated and leaked gas can be efficiently performed by utilizing the natural ventilation power.

The storage battery stored in the storage space under the floor is taken in and out of the basic ventilation opening of the base of the house, or is taken in and out of the floor opening in the room like a conventional underfloor storage. It is an object of the present invention to provide a power storage system for a house that uses a space under the floor, which can facilitate maintenance and replacement work, as a storage space for a storage battery.

[0012]

A power storage system according to the present invention includes a storage battery for storing commercial power and supplying the power to load equipment. The storage battery is housed in a space under the floor of a house. Is what it is. In addition, by providing a pedestal having a traveling means for mounting the storage battery and taking the storage battery out of the house through a base vent of the housing base, the storage battery can be replaced under the floor or maintenance work can be performed. In this case, the storage battery can be easily taken in and out from the outside of the house through the existing ventilation holes provided in the foundation.

[0013] Further, by providing a floor opening with a door provided on the floor of the house for taking in and out the storage battery from the inside of the house, it is possible to replace the storage battery stored under the floor or perform maintenance work. Can easily be taken in and out of the house through a floor opening with a door provided on the floor.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electric power storage system according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic side view of a power storage system of the present invention, FIG. 2 is a schematic view of connection of the power storage system, and FIG. 7 is a schematic view of another connection of the power storage system.

As shown in FIGS. 1 and 2, power from a commercial power system 1 enters a house via a wattmeter 2 and goes directly to an outlet 7 in the house via a distribution board 6 in the house. And a system connected from the wattmeter 2 to the system switching device 3, and from the system switching device 3 to the storage battery 5 installed in the underfloor storage space via the bidirectional inverter 4. A first switch 8, a second switch 9, a diode 10 for preventing backflow, and a control unit 11 are provided inside the system switching device 3.

The first switch 8 is connected so as to supply electric power to the storage battery 5 via the bidirectional inverter 4 for converting an AC current from the commercial power system 1 into a DC current when turned on. On the other hand, the direct current stored in the storage battery 5 is converted into an alternating current by the bidirectional inverter 4 and supplied to the power outlet 7 in the house via the second switch 9 and the diode 10 for preventing backflow. It is connected.

The control unit 11 switches between the first switch 8 and the second switch 9 in order to use inexpensive nighttime power,
The operation of the bidirectional inverter 4 is controlled and the storage battery 5 is controlled.
Monitoring the state of charge of the battery and controlling the nighttime power zone to be operated. The system switching device 3 and the bidirectional inverter 4 may also be installed in the space 17 below the floor of the house, like the storage battery 5. By doing so, the system switching device 3 and the bidirectional inverter 4 that may generate heat can be cooled without providing special equipment.

Next, the operation of the power system will be described with reference to FIG. 2. In the cheap nighttime power zone, the control unit 11
When the switch 8 is turned ON, the AC current from the commercial power system 1 is supplied to the outlet 7 in the house via the distribution board 6, and the AC current from the commercial power system 1 is turned ON. , The alternating current is converted into the direct current by the bidirectional inverter 4 to charge the storage battery 5. When the control unit 11 detects that the storage battery 5 has been sufficiently charged, the control unit 11 controls the first switch 8 to be turned off to stop energizing the storage battery 5. In addition, storage battery 5
When is not in a sufficiently charged state, the control unit 11 switches the first switch 8 to the ON state to charge the storage battery 5.

Next, the first switch 8 is turned off by the control unit 11 except during the nighttime power period. The outlet 7 is supplied with an alternating current from the ordinary commercial power system 1, but when there is a large demand for electric power due to simultaneous use or mass use of each electric appliance, the second switch 9 is turned on automatically or manually. , The DC current from the storage battery 5 charged in the nighttime power zone is converted into an AC current by the bidirectional inverter 4 and the second switch 9 is turned ON.
Power is supplied to the power outlet 7 in the house via the diode 10 and the distribution board 6, and each electric device can be used.

When the control unit 11 detects that the capacity of the storage battery 5 has decreased to the lower limit, or when the power demand in the house decreases, the control unit 11
Turns off the second switch 9 to stop the power supply from the storage battery 5 to the power outlet 7 in the house.
Even if the power supply from the storage battery 5 is stopped in this way, the AC outlet from the commercial power system 1 is supplied to the power outlet 7 in the house as usual. Can be used. In addition, depending on the electric appliance used, as shown in FIG. 7, the electric power source to the outlet using the electric appliance may be selectively used as a system using commercial power and a system using the storage battery 5.

FIG. 3 is a schematic side view showing the arrangement of the storage battery under the floor according to the first embodiment of the present invention, and FIG. 4 is a schematic view showing the arrangement under the floor of the storage battery according to the second embodiment of the present invention. FIG. 5 is a side view, FIG. 5 is a modification of the first embodiment of the present invention, FIG.
Is a modification of the second embodiment of the present invention. Storage and installation of storage battery 5 in underfloor space 17 FIGS.
Reference numeral 12 denotes a floor base board on which casters 23 mounted on a pedestal 22 of a mounted traveling type travel.
Reference numeral 13 denotes a base of a house, and a base vent 14 is opened at a rising portion thereof. For ventilation under the floor, a plurality of base ventilation holes 14 are provided. An outer wall 15 and a floor 16 of the house are provided on the upper portion of the base 13 of the house to form a house.
Space (space) surrounded by floors 3 and 13 and floor 16
Is an underfloor space 17.

FIG. 3 shows a case in which the storage battery 5 is installed on a mounted traveling pedestal 22 having running means such as casters 23. In normal use, the remaining storage battery 5 is moved. However, when the storage battery 5 is out of order or when the life of the storage battery 5 has expired, the storage battery 5 is pulled out from the base ventilation port 14 opened in the base portion 13 of the house together with the mountable pedestal 22 to repair the storage battery. Maintenance work such as replacement is performed.

Such a storage battery 5 is heavy, and the casters 23 of the pedestal 22 may be buried in the ground in the case of the mounted traveling pedestal 22 with casters. In addition, if the ground floor 12 is left as it is, the ground contains a lot of moisture, and the humidity deteriorates the performance of the storage battery 5. Therefore, it is desirable that the floor base board surface be covered with a throw-away condenser on the floor base board 12 for running of the pedestal and moisture prevention. In addition, even when a disposal container cannot be constructed, it is desirable to lay a waterproof sheet to prevent moisture.

However, as shown in FIG.
When it is necessary to run the storage battery 5 mounted with the base 3 together with the pedestal 22, a rail or the like is laid on a disposal container or a moisture-proof sheet, or as shown in FIG. When the traveling rail 21 for the suspension traveling type pedestal 24 is attached and the suspension traveling type pedestal 24 on which the storage battery 5 is mounted is used on the traveling rail 21, the storage battery 5 can be easily taken in and out.

One of the base ventilation holes 14 formed at the rising portion of the base 13 of the house has a size that allows the storage battery 5 housed in the underfloor space 17 to be taken in and out. Is preferred. It is preferable that the base vent 14 opened in the base 13 of the house is wide for drawing out the storage battery 5, but small animals such as dogs and cats usually pass through the base vent 17 through the underfloor space 17. It is preferable to insert a removable wire mesh or grid so that it does not get into the inside, and it is covered with a cover and has a gentle slope from the bottom of the floor to the outside so that rain does not infiltrate from the base ventilation hole 14. Is more desirable.

Next, FIG. 4 shows a case where the storage battery 5 installed under the floor can be taken out from the inside of the house. A floor opening 19 is provided in the floor 16 and this floor opening 1 is provided.
This is another embodiment in which the storage battery 5 is placed on the pedestal 20 and stored and installed under the storage battery 9. By providing the underfloor door 18 in the floor opening 19, the floor opening 19 is usually closed by the underfloor door 18, so that it can be used without disturbing daily life at all like a normal floor surface. The storage battery 5 can be taken out from the underfloor space 17 by opening the underfloor door 18 of the floor opening 19. The pedestal 20 shown in FIG.
Since it is only necessary to place the storage battery 5 from the floor opening 19 of the floor 16, it is not necessary to provide a caster for movement.

As a modification of FIG. 4, as shown in FIG. 6, a traveling rail 21 is mounted on the ceiling under the floor so as to sandwich the floor opening 19, and a suspended traveling type in which the storage battery 5 is mounted on the traveling rail 21. By pushing the pedestal 24 a little deeper from the floor opening 19 and providing the underfloor storage in accordance with the vacant floor opening 19, the underfloor space can be used as an installation space for the conventional underfloor storage, or even more. The length of the traveling rail 21 can be extended, and a traveling pedestal 24 suspended from the traveling rail 21 can be added to be used as an installation space for more storage batteries 5.

[0028]

As described above, the power storage system using the underfloor of the present invention is a place for installing a storage battery for power storage in a space under the floor which has not been effectively used as a dead space in a house. As it was used as a storage space,
Even in a small house, it is possible to install a power storage system for the house, and the underfloor space where the storage battery is stored has many ventilation holes in the base part to prevent corrosion of the base of the building With good ventilation and ventilation, gas leaking and generating from the storage battery can be quickly discharged, and because of good ventilation, the temperature in the underfloor space is relatively lower than the outside air temperature. There is an effect that special equipment for radiating and cooling the stored storage battery is not required.

Further, since a large amount of storage batteries can be installed up to the full underfloor space of a house having an area approximately equal to the building area, a large amount of cheap commercial nighttime power can be stored at night. By using the generated power during the peak power demand in the daytime, the cheaper power at night leads to a reduction in the power rate for consumers, and the power company that supplies the power during the peak power demand in the daytime. Since there is no need to provide an excessively large facility, the power demand is dispersed between day and night, and this has the effect of playing a role in leveling the power load.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a power storage system of the present invention.

FIG. 2 is a schematic diagram of connection of a power storage system.

FIG. 3 is a schematic side view showing the arrangement of the storage battery under the floor in the first embodiment of the present invention.

FIG. 4 is a schematic side view showing an arrangement under a floor of a storage battery according to a second embodiment of the present invention.

FIG. 5 is a modified example of the first embodiment of the present invention.

FIG. 6 is a modification of the second embodiment of the present invention.

FIG. 7 is a schematic diagram of another connection of the power storage system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Commercial power 2 Wattmeter 3 System switching device 4 Bidirectional inverter 5 Storage battery 6 Distribution board 7 Outlet 8 1st switch 9 2nd switch 10 Diode 11 Control part 12 Floor base 13 Housing base part 14 Base ventilation hole 15 Exterior wall 16 Floor 17 Under-floor space 18 Under-floor door 19 Floor opening 20 Pedestal 21 Travel rail 22 Mounted pedestal 23 Casters 24 Hanging pedestal

Claims (3)

[Claims] 1. A power storage system comprising a storage battery for storing commercial power and supplying the power to load equipment, wherein the storage battery is stored in a space under the floor of a house. 2. The electric power storage according to claim 1, further comprising a pedestal having running means for mounting the storage battery and for taking the storage battery in and out of the house through a base ventilation hole of a housing base. system. 3. The power storage system according to claim 1, further comprising a floor opening with a door provided on a floor of the house, for taking the storage battery in and out of the house.