JP2008128605A - Storage type air conditioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage type air conditioning device capable of effectively utilizing stored power in a time of disaster and the like. <P>SOLUTION: This storage type air conditioning device 100 comprises a storage battery 21 capable of storing external electric power supplied from an external power source 30, an air conditioning unit 10 receiving the supply of stored power from the storage battery 21 and performing air conditioning motion, a stored electric power supply portion 25 capable of supplying the stored power of the storage battery 21 to an external device, a residual amount detecting portion 26a detecting the residual amount of stored power in the storage battery 21, and a power supply control portion 28 supplying the stored power to the air conditioning unit from the storage battery in a state of keeping a predetermined power storage residual amount so that at least the prescribed minimum stored power can be supplied to the external device through the stored power supply portion when the supply of the external electric power is cut off. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power storage type air conditioner that includes a storage battery and that can perform an air conditioning operation using stored power stored in the storage battery.

2. Description of the Related Art Conventionally, a storage type air conditioner that includes a storage battery, charges the storage battery at night when power demand is low, and discharges the storage battery during the day to use the stored power to perform an air conditioning operation (for example, patents). Reference 1).
JP 2002-309927 A

By the way, power storage type air conditioners are often introduced into public facilities such as schools. Public facilities such as schools are often designated as evacuation sites in case of disasters such as typhoons and earthquakes. Although a power failure may occur during such a disaster, the storage battery of the electricity storage type air conditioner is mainly used only for the air conditioning operation.
An object of the present invention is to provide a power storage type air conditioner that can effectively use stored power in a disaster or the like.

  In order to solve the above problems, a power storage air conditioner of the present invention includes a storage battery capable of storing external power supplied from an external power supply, and an air conditioning unit that performs an air conditioning operation by receiving the supply of stored power from the storage battery. A storage power supply unit that can supply the storage power of the storage battery to an external device, a remaining amount detection unit that detects a storage power remaining amount of the storage battery, and at least a predetermined minimum when the supply of the external power is interrupted A power supply control unit that supplies stored power from the storage battery to the air-conditioning unit in a state where a preset minimum stored remaining power is held so that stored power can be supplied to the external device via the stored power supply unit. It is characterized by providing.

Here, the predetermined minimum stored power is a value corresponding to a preset minimum remaining power.
Further, the minimum remaining amount of electricity can be set as appropriate assuming the amount of power that the user should supply to the external device in the event of a power failure such as a disaster. An arbitrary capacity (for example, KWh) such as / 3 can be set. In addition to the emergency lights described below, the external devices include various devices such as a charger for charging communication devices such as televisions, radios, and mobile phones.

  According to the above configuration, when supplying the stored power from the storage battery to the air conditioning unit, the power supply control unit can supply at least the preset minimum stored power to the stored power supply unit when the supply of external power is interrupted As described above, at least a remaining power storage amount that is equal to or greater than a preset minimum power storage amount is maintained, so that, for example, when a power failure occurs during a disaster or the like and the supply of external power from an external power source is interrupted, the stored power supply unit For example, even if a power failure occurs during a disaster, the external device can be operated by connecting the external device to the stored power supply unit.

In the power storage air conditioner having the above-described configuration, it is preferable that the external device includes an emergency light.
Here, the emergency light may be installed in a housing or the like of the power storage type air conditioner, or may be installed at a position away from the power storage type air conditioner.
According to the above configuration, even when the supply of external power from the external power supply is interrupted, the storage battery has a storage capacity with the minimum remaining charge, so even if a power failure occurs during a disaster, etc., the emergency light The emergency power can be turned on by supplying the stored electric power.

Further, in the power storage air conditioner having the above-described configuration, the power supply control unit includes a brightness detection unit that detects ambient brightness, and the power supply control unit is configured such that the ambient brightness is darker than a predetermined brightness. In addition, it is preferable to control so that the stored power is supplied to the emergency light.
According to the above configuration, the power supply control unit performs control so that the stored power is supplied to the emergency light when the surrounding brightness is darker than the predetermined brightness. Only in some cases can the stored power be supplied to the emergency light.

Further, the electricity storage type air conditioner having the above configuration includes a power generation device using natural force as an internal power source, and is configured to be able to supply the generated power generated by the power generation device to the air conditioning unit and / or the storage battery. preferable.
Here, examples of the power generation device using natural force include a solar power generation device and a wind power generation device.
According to the above configuration, even when the supply of the external power from the commercial power supply as the external power supply is stopped, the air conditioning unit can be operated by receiving the supply of the generated power supplied from the power generation device using natural force. In addition, the power can be stored by supplying generated power to the storage battery.

  ADVANTAGE OF THE INVENTION According to this invention, when the supply of the external electric power from an external power supply is interrupted at the time of a disaster etc., the electrical storage electric power stored in the storage battery can be used effectively.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, schematic structure of the electrical storage type air conditioner 100 of this Embodiment is shown. As shown in FIG. 1, a power storage air conditioner 100 includes an air conditioning unit 10 and a power storage unit 20 having a storage battery 21, and supplies power from a commercial power source 30 as an external power source and a power generator 40 as an internal power source. Is configured to receive. In addition, an external device connection unit 50 and an emergency lamp 60 as one of the external devices are connected to the power storage unit 20, and the stored power stored in the storage battery 21 other than the emergency light 60 is connected via the external device connection unit 50. It can be supplied to the external device 50a or the emergency light 60 can be turned on.

Electric storage type air conditioner 100 according to the present embodiment is based on the above configuration and uses AC power supplied from commercial power supply 30 and generated power supplied from power generator 40 to charge the air conditioning operation and storage battery 21. It is comprised so that it can perform.
However, when charging the storage battery 21 using the commercial power supplied from the commercial power source 30, it is preferable to perform it in the midnight power hours when the power demand is low and the power rate is low. Further, the stored power stored in the storage battery 21 is basically configured to be supplied to the air conditioning unit 10 at the peak of power demand such as midsummer daytime, thereby contributing to leveling of the power load. Can do.

  In the above, the power generation device 40 is a device that generates power using natural force, and examples thereof include a wind power generation device and a solar power generation device. Thus, even if a power outage occurs during a disaster or the like by generating power using natural force, the power storage air conditioner 100 is operated using the generated power generated by the power generation device 40 to perform the air conditioning operation. In addition, the storage battery 21 can be charged.

  The air conditioning unit 10 includes an outdoor unit 11 shown in FIG. 2 and one or more indoor units connected to the outdoor unit 11 by a refrigerant circuit (not shown). The air conditioning unit 10 is connected via a commercial power supply 30 and an AC power supply line 31. Further, as described above, the generated power can be supplied from the power generation device 40. The air conditioning unit 10 includes an AC-DC converter (not shown) inside, and in this AC-DC converter, AC power supplied from the commercial power supply 30 is converted into DC power of a predetermined voltage, and the DC power is used. Operate.

  The outdoor unit 11 includes an outdoor heat exchanger (not shown) in the housing 12, a blower 13 that blows outside air to the outdoor heat exchanger, and the like, and a lower part of the housing 12 stores power storage unit 20. A unit accommodating portion 14 is provided. In addition, an opening / closing door 15 is provided at the lower part of the housing 12, and when the opening / closing door 15 is opened, the outlet serving as the external device connecting portion 50 is exposed to the outside. An external device 50 a having a plug can be connected to the external device connection unit 50. The external device 50a may be any device as long as it operates by receiving power supply by inserting a plug into an outlet. For example, a charger for a communication device such as a television, a radio, and a mobile phone can be cited as a specific example of the external device 50a. Further, an emergency light 60 as one of external devices is installed above the side of the housing 12, and as described above, the emergency light 60 is turned on when supplied with the stored power from the power storage unit 20. The casing 12 of the outdoor unit 11 is provided with an illuminance sensor (brightness detection unit) 16 (see FIG. 1), and the illuminance sensor 16 can detect ambient brightness.

  On the other hand, as shown in FIG. 1, the power storage unit 20 is connected to the storage battery 21, a power line connection control unit 22 that is connected to various power lines and switches the connection of these power lines, and a charger 23 that charges the storage battery 21. The DC-DC converter 24 that converts the stored power discharged from the storage battery 21 into direct-current power of a predetermined voltage, and the external device 50a connected to the stored power stored in the storage battery 21 via the external device connection unit 50 or emergency External device storage power supply unit (storage power supply unit) 25 that can be supplied to the lamp 60, charge / discharge management unit 26 that manages charge / discharge of the storage battery 21, storage control panel 27, charge / discharge of the storage battery 21, and power line And a power storage air conditioning controller 28 that transmits and receives control signals to and from the air conditioning unit 10.

  The storage battery 21 may be, for example, a lead storage battery, a sodium / sulfur battery, a sodium / nickel chloride battery, a lithium ion secondary battery, a lithium ion polymer secondary battery, a nickel hydride storage battery, a nickel cadmium storage battery, or an electric double layer capacitor. Can do.

  The power line connection control unit 22 includes a breaker, a magnet switch and the like, and selectively connects various power lines connected to the power line connection control unit 22 or disconnects the various power lines by releasing the connection. Is to switch.

  Specifically, the power line connection control unit 22 is connected to a sub AC power supply line 32 that branches from an AC power supply line 31 that supplies AC power from the commercial power supply 30 to the air conditioning unit 10. Yes. The power line connection control unit 22 is connected to a first charging power supply line 71 for supplying AC power supplied from the commercial power supply 30 to the charger 23 via the sub AC power supply line 32. Yes. The power line connection control unit 22 connects and disconnects the auxiliary AC power supply line 32 and the first charging power supply line 71 under the control of the power storage air conditioning controller 28.

  In addition, a first discharge power supply line 72 connected to the storage battery 21 is connected to the power line connection control unit 22. Further, a second discharge power supply line 73 for supplying the stored power supplied from the storage battery 21 to the DC-DC converter 24 via the first discharge power supply line 72 is connected. The power line connection control unit 22 connects and disconnects the first discharge power supply line 72 and the second discharge power supply line 73 under the control of the power storage air conditioning controller 28. When the first discharge power supply line 72 and the second discharge power supply line 73 are connected, the stored power can be supplied to the air conditioning unit 10.

  Further, in the present embodiment, the power line connection control unit 22 is connected to the external device stored power supply unit 25 via the third discharge power supply line 74. The power line connection control unit 22 connects and disconnects the first discharge power supply line 72 and the third discharge power supply line 74 under the control of the power storage air conditioning controller 28. When the first discharge power supply line 72 and the third discharge power supply line 74 are connected, the external device 50a or the emergency light 60 connected to the external device connection unit 50 via the external device storage power supply unit 25. The stored electric power can be supplied to

  Further, the power generation device 40 and the power line connection control unit 22 are connected via a generated power supply line 81. The power line connection control unit 22 connects and disconnects the generated power supply line 81 and the second discharge power supply line 73 under the control of the power storage air conditioning controller 28. When the generated power supply line 81 and the second discharge power supply line 73 are connected, the generated power can be supplied to the air conditioning unit 10.

  In addition, the power line connection control unit 22 connects and disconnects the generated power supply line 81 and the first charging power supply line 71 under the control of the power storage air conditioning controller 28. When the generated power supply line 81 and the first charging power supply line 71 are connected under the control of the power storage air conditioning controller 28, the generated power can be supplied to the storage battery 21 to charge the storage battery 21.

  The charger 23 converts the AC power supplied from the first charging power supply line 71 via the power line connection control unit 22 into DC power and outputs the DC power to the second charging power supply line 77. (Not shown) is built-in.

In addition, the charger 23 converts the DC generated power supplied from the power generation device 40 via the power line connection control unit 22 into DC power having a predetermined voltage and outputs it to the second charging power supply line 77. An AC converter (not shown) is built in.
The charger 23 supplies DC power to the storage battery 21 via the second charging power supply line 77 under the control of the power storage air conditioning controller 28 to charge the storage battery 21.

  The DC-DC converter 24 is connected to the power line connection control unit 22 via the second discharge power supply line 73, and is connected to the air conditioning unit 10 via the stored power supply line 78. The DC-DC converter 24 converts DC power supplied from the second discharge power supply line 73 via the power line connection control unit 22 into DC power of a predetermined voltage under the control of the power storage air conditioning controller 28. Then, DC power is supplied to the air conditioning unit 10 via the stored power supply line 78.

  The external device storage power supply unit 25 is connected to the power line connection control unit 22 and the third discharge power supply line 74, and is connected to the external device connection unit 50 via the external device power supply line 75. The emergency light 60 is connected to the emergency light 60 via the emergency light power supply line 76. The external device stored power supply unit 25 incorporates an inverter that converts stored power supplied from the storage battery 21 via the third discharge power supply line 74 into AC power of a predetermined voltage, and the predetermined voltage converted by the inverter. The AC power is output to the external device 50 a or the emergency light 60 connected to the external device connection unit 50 via the external device power supply line 75 or the emergency light power supply line 76.

  The charge / discharge management unit 26 includes a remaining amount detector (remaining amount detection unit) 26a that detects the remaining battery amount (remaining power storage amount) of the storage battery 21, and performs charge / discharge according to the characteristics of each type of the storage battery 21. It is something to manage. The charge / discharge management unit 26 detects the remaining amount of power stored in the storage battery 21 under the control of the power storage air conditioning controller 28, and outputs information related to the remaining power storage to the power storage air conditioning controller 28.

  The power storage control panel 27 includes a display unit composed of a liquid crystal panel and the like, an operation unit having various input buttons, etc., and inputs various instruction signals via the operation unit and displays setting contents on the display unit. It is configured to be able to.

  The amount of power to be supplied from the storage battery 21 to the external device 50a (minimum amount of stored power) when the user or the like is cut off the supply of commercial power from the commercial power source 30 during a disaster or the like via the power storage control panel 27 For example, it is configured so that the minimum remaining amount of electricity to be stored in the storage battery 21 can be set. The minimum remaining amount of electricity can be set as appropriate according to the amount of power to be supplied to the external device 50a and the emergency light 60 via the external device electricity storage power supply unit 25. Specifically, the electricity storage capacity of the storage battery 21 An arbitrary capacity (for example, KWh) such as 1/2, 1/3, etc. can be set in advance.

  The power storage air conditioning controller 28 includes an MPU, a ROM, a RAM, a timing circuit, and the like (not shown). Under the cooperation of these, the power line connection control unit 22, the charger 23, and the DC-DC converter 24 described above are controlled by a computer. The charge / discharge management unit 26 and the power storage control panel 27 are controlled. However, the power line connection control unit 22, the charger 23, the DC-DC converter 24, the charge / discharge management unit 26, the power storage control panel 27 and the power storage air conditioning controller 28 are connected via signal lines 91 to 95, respectively. .

  Further, the power storage air conditioning controller 28 is connected to the illuminance sensor 16 via the signal line 96, and is configured such that an illuminance signal indicating the brightness around the outdoor unit 11 is input to the power storage air conditioning controller 28. .

  The power storage air conditioning controller 28 is connected to the air conditioning unit 10 via a signal line 97. When operating the air conditioning unit 10 with stored power, the power storage air conditioning controller 28 transmits a control signal to the air conditioning unit 10 via the signal line 97, and stores the stored power supplied via the stored power supply line 78. Control to be operating power.

  Further, as described above, the power storage air conditioning controller 28 is connected to the charge / discharge management unit 26 via the signal line 94, and sends various control signals to the charge / discharge management unit 26 to control the charge / discharge of the storage battery 21. To do. Specifically, based on the time counted by the timing circuit, for example, when the start time of a predetermined time zone set in advance as a charging time zone such as a midnight power time zone is reached, charging of the storage battery 21 is started.

  Further, the storage air-conditioning controller 28 discharges the storage battery 21 and supplies the stored power to the air-conditioning unit 10 when the start time of a predetermined time zone set in advance as a discharge time zone, such as at the time of peak power demand, is reached. The charge / discharge management unit 26 and the power line connection control unit 22 are controlled. In power storage type air conditioner 100 of the present embodiment, power storage air conditioning controller 28 is at least predetermined when the supply of external power from external power sources (commercial power supply 30 and power generation device 40) is interrupted during a disaster or the like. Is stored in the storage battery 21 in a state where the preset minimum storage power is held so that the minimum storage power can be supplied to the external device 50a and the emergency light 60 via the external device storage power supply unit 25. Control is performed to supply the stored power to the unit 10.

With reference to FIG. 3, the operation | movement regarding the discharge of the storage battery 21 performed under control of the electrical storage air-conditioning controller 28 is demonstrated.
First, when the start time of the discharge time zone is reached (step S1: Y), the storage battery 21 is discharged (step S3).

  Here, when discharging the storage battery 21, the power storage air conditioning controller 28 transmits a control signal to the power line connection control unit 22, the DC-DC converter 24, the charge / discharge management unit 26, and the air conditioning unit 10, and the first discharge. The power supply line 72 and the second discharge power supply line 73 are connected to perform control so that the stored power output from the storage battery 21 is supplied to the air conditioning unit 10.

  Next, the power storage air-conditioning controller 28 transmits a control signal to the charge / discharge management unit 26, and causes the remaining power detector 26a to detect the remaining power storage of the storage battery 21 (step S3). Here, when detecting the remaining amount of electricity stored in the storage battery 21, the electricity storage air conditioning controller 28 may measure the remaining amount of electricity stored in the storage battery 21 at a predetermined time interval by measuring with a built-in timing circuit.

  Next, it is determined whether or not the remaining amount of electricity output from the remaining amount detector 26a has reached a preset minimum remaining amount of electricity (step S4). Here, when the remaining amount of electricity stored in the storage battery 21 is greater than the minimum remaining amount of electricity set in advance via the electricity storage control panel 27, the process returns to step S1 to continue discharging the storage battery 21.

  On the other hand, in step S4, when the remaining amount of electricity stored in the storage battery 21 has reached the preset minimum amount of remaining electricity (step S4: Y), the electricity storage air conditioning controller 28 is connected to the power line connection control unit 22, the DC-DC converter. 24, sending a control signal to the charge / discharge management unit 26 and the air conditioning unit 10, releasing the connection between the first discharge power supply line 72 and the second discharge power supply line 73, and stopping the discharge of the storage battery 21; The air conditioning unit 10 is controlled to perform an air conditioning operation with external power supplied from the commercial power supply 30 or the power generation device 40.

  As shown in FIG. 3, when the stored power is supplied to the air conditioning unit 10, the storage battery 21 is always supplied to the air conditioning unit 10 so that the remaining storage capacity of the storage battery 21 is maintained at a preset minimum remaining storage capacity. Even when the supply of external power from the commercial power supply 30 is interrupted by a disaster or the like by controlling the amount of stored power to be connected, the external device connection unit 50 is connected via the external device storage power supply unit 25 The minimum stored power corresponding to the minimum remaining power stored in the storage battery 21 can be supplied to the external device 50a and the emergency light 60 to be used, and the stored power stored in the storage battery 21 can be used effectively.

  Next, with reference to FIG. 4, the operation | movement regarding lighting of the emergency light 60 performed by the electrical storage air-conditioning controller 28 is demonstrated. This process is performed when the external power supply from the commercial power source 30 is interrupted as shown in step S1 and the ambient light of the outdoor unit 11 is darker than a predetermined brightness. This is a process for lighting 60.

  First, when it is detected that the supply of external power to the power storage type air conditioner 100 is interrupted (step S11: Y), the power storage air conditioning controller 28 receives an illuminance signal input from the illuminance sensor 16 in advance. It is determined whether or not the surrounding brightness is darker than a preset predetermined brightness based on whether or not the preset preset value or less (step S12).

  In step S12, when it is determined that the ambient brightness of the outdoor unit 11 is darker than a predetermined brightness set in advance (step S12: Y), the power storage air-conditioning controller 28 uses the illuminance signal input from the illuminance sensor 16. Based on this, the lighting of the emergency light 60 is continued until the ambient brightness becomes brighter than the predetermined brightness (step S13).

  Then, based on the illuminance signal input from the illuminance sensor 16, when the surrounding brightness becomes brighter than the predetermined brightness (step S14: Y), the emergency light 60 is turned off (step S15). The above process is repeated until the supply of external power from the commercial power source 30 is started, and when the supply of external power is started (step S16), the process ends.

  As shown in FIG. 4, even when the supply of external power from the commercial power supply 30 is interrupted, the stored light can be supplied to the emergency light 60 and the emergency light 60 can be turned on. At this time, the power storage air conditioning controller 28 stores the stored power in the emergency light 60 when the brightness around the outdoor unit 11 is darker than a predetermined brightness based on the illuminance signal input from the illuminance sensor 16. Since the control is performed so that the power is supplied, the stored power can be supplied to the emergency light 60 only when the surroundings are dark and needs to be lit, and the consumption of the stored power can be suppressed during a disaster or the like.

  According to the present embodiment described above, in the power storage type air conditioner 100 that is often introduced into public facilities such as schools, the power storage power stored in the storage battery 21 is used to connect to the external device connection unit 50. For example, power is supplied to refugees in public facilities that are often designated as evacuation sites in the event of disasters. Thus, the stored power of the storage battery 21 can be used effectively.

  However, the above embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention. For example, in the above embodiment, the emergency light 60 is installed in the housing 12 of the outdoor unit 11, but it is needless to say that the emergency light 60 may be installed at a position away from the power storage air conditioner 100.

It is a block diagram which shows schematic structure of the electrical storage type air conditioner of embodiment of this invention. It is the front view (a) and side view (b) which show the external appearance structural example of the outdoor unit which comprises a part of electrical storage-type air conditioning apparatus. It is a process flowchart regarding the discharge operation of the storage battery of embodiment of this invention. It is a process flowchart regarding lighting of the emergency light of the embodiment of the present invention.

Explanation of symbols

10 Air Conditioning Unit 11 Outdoor Unit 16 Illuminance Sensor (Brightness Detection Unit)
DESCRIPTION OF SYMBOLS 20 Power storage unit 21 Storage battery 22 Electric power line connection control part 23 Charger 24 DC-DC converter 25 External apparatus electrical storage electric power supply part (electric storage electric power supply part)
26 Charge / Discharge Management Unit 26a Remaining Capacity Detector (Remaining Capacity Detection Section)
27 Power Storage Control Panel 28 Power Storage Air Conditioning Controller (Power Supply Control Unit)
30 Commercial power (external power)
40 Power generator (internal power supply)
50 External device connection 50a External device 60 Emergency light (external device)
100 Power storage air conditioner

Claims (4)

A storage battery capable of storing external power supplied from an external power source;
An air conditioning unit that receives the supply of stored power from the storage battery and performs an air conditioning operation;
An electricity storage power supply unit capable of supplying the electricity stored in the storage battery to an external device;
A remaining amount detecting unit for detecting a remaining amount of electricity stored in the storage battery;
The storage battery in a state of holding a preset minimum storage remaining amount so that at least a predetermined minimum stored power can be supplied to the external device via the stored power supply unit when the supply of the external power is interrupted A power supply control unit for supplying stored power to the air conditioning unit from
An electricity storage type air conditioner comprising: The electricity storage type air conditioner according to claim 1,
The external device includes an emergency light,
An electricity storage type air conditioner characterized by the above. The electric storage air conditioner according to claim 2,
It has a brightness detection unit that detects ambient brightness,
The power supply control unit is configured to control the stored power to be supplied to the emergency light when the ambient brightness is darker than a predetermined brightness set in advance;
An electricity storage type air conditioner characterized by the above. In the electrical storage-type air conditioning apparatus as described in any one of Claims 1-3,
Equipped with a power generation device using natural power as an internal power source,
Being configured to be able to supply the generated power generated by this power generator to the air conditioning unit and / or the storage battery,
An electricity storage type air conditioner characterized by the above.

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