JP2014096927A - Power supply system and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of improving an inconvenient situation by utilizing an automobile in a home or the like to use it as a power supply during service interruption.SOLUTION: A power supply system includes an automobile 2 loaded with a battery 21, a power supply device 1, a power supply load 50, a DC cable 31, an AC cable 32, and so on. The power supply device 1 includes a DC/AD conversion function and a power storage function based on a built-in battery. The power supply system inputs first AC power from an AC power supply during charging, stores second DC power in the built-in battery 21 on the basis of AC/DC conversion, inputs first DC power from the battery 21 of the automobile 2 through the DC cable 31 during discharging, obtains second DC power on the basis of DC/DC conversion, discharges the second DC power from the built-in battery 21, and supplies the first AC power to the power supply load 50 through the AC cable 32 on the basis of DC/AC conversion.

Description

  The present invention relates to an electric technology such as a power supply system and apparatus for supplying AC power based on DC power.

  There is a possibility that planned power outages will be implemented in some areas due to insufficient power supply capacity of the power company. Since power outages are rare in Japan, the current situation is not enough to prepare for power outages. That is, many ordinary households have only provisions for temporarily stopping with a flashlight or a candle when a power failure occurs. During the power outage, the use (operation) of some lighting, TV, air conditioning, etc., and charging of the mobile phone cannot be performed, which is inconvenient.

  On the other hand, many households own automobiles (gasoline engine cars). An automobile (gasoline engine car) is equipped with an engine, a generator, a battery, and the like.

  JP-A-11-178234 (Patent Document 1) is an example of a prior art that supplies power from an automobile to a home (housing) side. Patent Document 1 (“Household Power Supply System Using an Electric Vehicle”) describes, for example, “Electricity supply from an electric vehicle to the house side in an emergency or the like to enable use of electric equipment for a house”. There is a description. In Patent Document 1, the housing side is provided with a charger / discharger, a storage battery, etc., the electric vehicle side is provided with an inverter, a vehicle storage battery, etc., and the inlet portion on the electric vehicle side and the housing side charger / discharger connector are connected, It describes that power is supplied from the house side to the car side or from the car side to the house side. It is described that in the event of an emergency such as a power failure, power can be supplied from the storage battery or the vehicle storage battery to electrical equipment in a house.

  As a prior art example regarding an in-vehicle AC power supply, there is JP-A-11-55958 (Patent Document 2). Patent Document 2 includes a description such as “providing an AC power supply device that can easily route a power line of an electric device provided in an automobile and can reduce a load on a battery”.

JP-A-11-178234 Japanese Patent Laid-Open No. 11-55958

  In ordinary households, for example, power (AC power) necessary for the use (operation) of lighting, television, air conditioning and charging, charging of mobile phones, etc. during power outages (power generation and storage) Inconvenience can be improved if it can be covered by means such as conversion). If the power supply means can be used in many homes, a great effect can be expected.

  As one of the power supply means, there is a commercially available portable power generator, but it is not easy to spread in terms of price, fuel supply, noise, and the like.

  On the other hand, an automobile (gasoline engine car) owned by many households is equipped with an engine, a generator, a battery (for example, DC12V) and the like. If these car facilities can be used effectively and used as a household power source in the event of a power failure or emergency, the inconvenient situation can be improved.

  For example, in home centers and stands, a 30 W class inexpensive device has already been sold as an AC power supply device (DC / AC inverter device) for automobiles. For example, this AC power supply device is connected to a terminal (cigar socket etc.) of a DC power source (DC12V) of an automobile, and AC power up to a predetermined capacity (electric power) such as 30 W is supplied by DC / AC conversion. Home appliances (for example, charging a mobile phone) can be used.

  However, at present, even if a DC power source (for example, DC12V) of an automobile is used using the above-described existing AC power supply device, the capacity (power) that can be supplied and used is as small as 30 W. Difficult to use in terms of surface. In other words, there are limited electrical appliances that can be used in the event of a power outage or emergency, which is insufficient.

  If a large capacity (electric power) such as 300 W can be supplied and used as a power source (power supply means) at the time of a power failure in a home, the use is widened and useful, such as lighting, television, air conditioning and cell phone charging.

  In the prior art examples such as Patent Document 1, it is possible to supply power from an electric vehicle (its storage battery, etc.) to a house (HEMS, etc.). At present, there are only a limited number of households that can be introduced and used.

  In view of the above, the main object of the present invention is related to a power supply device and system, and can be used as a power source at the time of power outage or emergency by utilizing a car in many ordinary homes, and can improve inconvenient situations, In particular, it is to provide an apparatus and system that can be used relatively inexpensively.

  In order to achieve the above object, a representative embodiment of the present invention is a power supply apparatus and system that supplies AC power based on DC power, and has the following configuration. The power supply device and system of this embodiment utilize the facilities (batteries, etc.) of automobiles (gasoline engine vehicles) that can be easily handled in many ordinary homes, and provide AC power for home use in the event of a power failure or emergency. Supply.

  A power supply system according to the present embodiment includes a vehicle equipped with a battery that is a DC power supply, a power supply device, a power load including an electrical appliance that requires an AC power source, and a DC cable and an AC cable connected to the power supply device. And an AC cable for charging. The DC cable connects a battery terminal of the automobile and an input terminal portion of the power supply device. The AC cable connects an output terminal portion of the power supply device and the power load. The charging AC cable is connected to an AC power source. The power supply device receives a first DC power from a battery of the automobile and outputs a first AC power corresponding to a home based on the DC / AC conversion, and a first DC power by the AC power source. And a power storage function for storing the second DC power by a built-in battery based on the input of the second AC power.

  The power supply system of this embodiment inputs the first AC power from the AC power source through the charging AC cable during charging, and supplies the second DC power to the built-in battery based on AC / DC conversion. When storing and discharging, the first DC power is input from the battery of the automobile through the DC cable, and the second DC power is obtained based on DC / DC conversion, and the second DC power is acquired from the built-in battery. 2 DC power is discharged, and the first AC power is supplied to the power load through the AC cable based on DC / AC conversion.

  According to a typical embodiment of the present invention, the power supply device and system can be used as a power source in the event of a power failure or emergency by using a car in a general home, etc., and can improve inconvenient situations, especially in comparison. It can be used at low cost.

It is a figure which shows the structure of the power supply system of Embodiment 1 of this invention. It is a figure which shows the structure of the power supply system and power supply apparatus of Embodiment 1 of this invention. FIG. 6 is a diagram illustrating an operation during charging (normal time) of the power supply device according to the first embodiment. It is a figure which shows the operation | movement at the time of discharge (at the time of a power failure) of the power supply device of Embodiment 1. FIG. It is a figure which shows the structure of the power supply system and power supply apparatus of Embodiment 2 of this invention. It is a figure which shows the structure of the modification of embodiment.

  Hereinafter, the power supply device and system for general home use (particularly for power failure) and automobile utilization type in the present embodiment will be described. In other words, this power supply system is an inverter power storage system, which is a system that combines a DC / AC conversion (inverter) function and a power storage function.

<Embodiment 1>
The power supply system according to the first embodiment of the present invention will be described with reference to FIGS. As an outline, the power supply system (FIGS. 1 and 2 etc.) includes a power supply device (inverter) 1, an automobile 2, a connection cable, and the like. The main body of the power supply device (inverter) 1 includes a battery (DC48V) 14 in addition to the conversion units (11, 12, 13). At normal time (FIG. 3), the battery 14 (DC48V) built in the power supply apparatus 1 is charged (charged) from the household AC100V. The power supply device 1 is connected to the battery 21 of the automobile 2 (gasoline engine car) during a power failure (FIG. 4). The engine of the automobile 2 is operated, and DC power (DC 12 V) is input / converted from the battery 21 to the power supply device 1. At the same time, DC power (DC48V) is discharged from the built-in battery 14, and a household AC power supply (AC100V) is supplied by DC / AC conversion. Thereby, it is possible to connect and use a power load 50 such as an electric appliance with a large capacity up to 300 W, for example, at home (indoor), and an inconvenient situation at the time of a power failure can be improved.

  As described above, this is a mechanism that compensates for the shortage of power from the on-vehicle battery 21 (DC 12 V) with the power from the battery 14 (DC 48 V) built in the power supply apparatus 1. Since the battery 14 is mounted on the power supply apparatus 1, when the battery 14 is charged, an AC power supply (AC 100 V) having a sufficiently large size is used for a certain time without operating the automobile 2. It can be supplied and used.

[System configuration]
FIG. 1 shows the configuration of the power supply system of the first embodiment. The power supply system includes a power supply device (inverter) 1 which is a main part (main body), an automobile 2 (gasoline engine car), particularly a battery 21 (DC12V) which is one of the equipment, and a first cable. DC cable 31, second cable AC cable 32, third cable charging AC cable 33, and household appliances connected to tap (multi-tap) 40 at one end of AC cable 32 ( Power supply load) 50. In FIG. 1, when used (at the time of a power failure), the car 2, the power supply device 1, the connection cables (31, 32) and the like are connected outdoors, and at home (indoors), for example, a PC is connected to the multi-tap 40. , Schematically shows a state in which an electric appliance (power load) 50 such as a television or an air conditioner is connected.

  The battery 21 of the automobile 2 is a known element, for example, is mounted in an engine room, and is connected to a motor or an AC generator (not shown). When the engine of the automobile 2 is operated, the battery 21 is charged through the AC generator.

  The power supply device 1 is normally installed, for example, indoors and charged (FIG. 3). Alternatively, the charged power supply device 1 may be provided in the automobile 2 (for example, in the trunk). At the time of a power failure at home, the indoor (or in-car) power supply device 1 is taken out and connected and used as shown in FIG. 1 (FIG. 4).

  The power supply device (inverter) 1 is an inverter having a DC (direct current) and AC (alternating current) conversion function (DC / AC conversion function) as a main function, and further includes a battery 14 and the like. The device is provided with a power storage / charge / discharge function. The power supply device 1 has a waterproof hermetically sealed structure housed in a drip-proof case and can be used outdoors. The power supply device 1 is relatively light and compact (since it is composed of the minimum necessary elements (components)), and can be moved by a user by carrying it. It is more preferable that the power supply device 1 has a structure provided with a handle or a caster (wheel) (not shown) so that it can be easily carried.

  The DC cable 31 is a cable dedicated to this system, and is a cable compatible with DC 12V. One end (FIG. 2, plug 31a) of the DC cable 31 can be connected to a terminal (FIG. 2, battery connection terminal 21a) of the battery 21, and the other end is an input terminal portion (FIG. 2, 34) of the inverter 1. , DC / DC converter 11). Since the DC cable 31 has a large amount of current, the DC cable 31 has a length of up to about 2 m, for example. The DC cable 31 has a structure in which the cable is protected (covered) with, for example, hard rubber so that the automobile 2 and the cable itself (conductor / insulator) are not damaged when connected to the battery 21. Thereby, even if the cable is pinched by a bonnet or the like at the time of connection work, there is no damage.

  One end of the DC cable 31 is, for example, a twist lock type plug 31a corresponding to the terminal (21a) of the battery 21, and can be easily connected by the user with one touch (insertion and twisting operation). It is easy to hold. The other end side of the DC cable 31 may be a plug or may be configured to be fixedly connected to the DC / DC conversion unit 11.

  The AC cable 32 is a cable dedicated to the present system and is a cable compatible with AC 100V, and can supply up to 300 W in total. One end of the AC cable 32 is a plug connected to the output terminal portion of the inverter 1 (FIGS. 2 and 35, DC / AC conversion portion 12). Note that one end of the AC cable 32 may be configured to be fixedly connected to the DC / AC conversion unit 12. The other end of the AC cable 32 is a multi-tap 40 (a plug receiving portion in the wiring plug connector).

  The AC cable 32 has a length of a certain length or more, for example, 20 to 30 m, for being drawn indoors from the position of the automobile 2. The AC cable 32 is, for example, an all-weather cabtyre cable so that there is no problem in outdoor wiring work. The multi-tap 40 is drawn into the home (indoor) by the AC cable 32, and a power load (electric appliance) 50 can be connected. The multi-tap 40 has a configuration in which, for example, three commercially available AC 100V outlet types (plug receptacles) are provided in correspondence with indoor contact, and a total of 300 W can be used.

  The detailed connection configuration between the battery 21 (battery connection terminal 21a) and the DC cable 31 (plug 31a) is, for example, as follows.

  (1) A configuration in which the plug 31a of the DC cable 31 is connected to a connection terminal (21a) provided directly on the battery 21. In this case, the bonnet of the automobile 2 is opened and connected during connection work.

  (2) A configuration in which a terminal portion (21a) wired from a battery 21 housed in an engine room or the like of the automobile 2 to a predetermined location (such as a cigar socket) in the vehicle is connected to the plug 31a of the DC cable 31. Or the structure connected to the terminal part (21a) from the battery 21 via the fuse box. The wiring and terminals in the vehicle may be equipment originally provided in the automobile 2 or new dedicated wiring and terminals may be provided. For example, a structure in which a direct connection terminal (21a) of the battery 21 of the automobile 2 and one end of a predetermined DC cable are connected in advance and led to a terminal portion at a predetermined position in the vehicle by the DC cable may be employed. A user connects and uses the plug (31a) of the DC cable 31 to the terminal part in the vehicle.

  (3) A configuration in which a predetermined connection portion is provided on the side of the automobile 2 so that the connection terminal (21a) of the battery 21 and the DC cable 31 can be easily connected. For example, a structure in which a dedicated connection port (for example, a type in which a cover is opened to connect to a terminal when used) is provided at a predetermined position of the vehicle body for connection from a battery 21 such as an engine room to the outside of the vehicle (DC cable 31). The user uses the plug 31a of the DC cable 31 connected to the terminal of the connection port of the vehicle body.

[Power supply device (inverter)]
FIG. 2 mainly shows the configuration of the power supply device (inverter) 1 of FIG. Specifically, the power supply device (inverter) 1 includes a DC / DC conversion unit 11, a DC / AC conversion unit 12, an AC / DC conversion unit 13, a battery 14, a display unit (meter) 15, a protection circuit 16, and the like. It is a configuration.

  The DC / DC conversion unit 11 is a circuit unit that inputs DC power (DC 12 V) of the battery 21 of the automobile 2 through the DC cable 31 and the input terminal unit 34 and converts the DC power (DC 12 V) into predetermined DC power (DC 48 V). On the output side of the DC / DC converter 11, the ground line (Low) and the power line (High) are connected to other parts (12, 13, 14). The other end of the DC cable 31 is connected to the input terminal unit 34 connected to the DC / DC conversion unit 11.

  The DC / AC converter 12 receives a predetermined DC power (DC48V) from the DC / DC converter 11 and the battery 14 side, converts the DC power into a predetermined AC power for home use (AC100V), an output terminal unit 35, an AC It is a circuit unit that outputs through the cable 32. The plug (32 a) of the AC cable 32 is connected to the output terminal unit 35 connected to the DC / AC conversion unit 12.

  The AC / DC conversion unit 13 is a circuit unit that inputs household AC power (AC 100 V) through the charging AC cable 33 and converts it into predetermined DC power (DC 48 V) for charging during normal times.

  The battery 14 is a portable sized storage battery (emergency storage battery) that is connected to each unit (11, 12, 13) and stores and supplies predetermined DC power (DC48V), for example, a lithium ion secondary battery. Is done. Efficient power storage is performed by using a lithium ion secondary battery.

  The display unit (meter) 15 is a part that measures and displays the power and current values and the operating state (charging / discharging, etc.) of the power supply device 1. The display unit 15 automatically measures and displays power and the like. As a result, the user can immediately and easily know the power usage status. As will be described later, when there is a smart meter or the like on the home (house) side, the display unit (meter) 15 is not provided in the power supply device 1 and the smart meter or the like on the home (house) side is linked. Good.

  The protection circuit 16 automatically shuts down and protects when the total load amount of the power load 50 connected to the multi-tap 40 of the power supply device 1 and the AC cable 32 reaches or exceeds a predetermined amount. It is a circuit part. This ensures safety.

[Characteristic]
As a characteristic of the power supply device 1 and the system, it is possible to supply (use) a total of 300 W as a maximum output at 100 V AC corresponding to a general home. Supplementing this characteristic, for example, in order to obtain an output of 300 W, when DC12V of the battery 21 is input, a current of 30 A or more is required. The motor of the automobile 2 has an output of 100 A, which is when the idling is 2000 revolutions or more. For example, when the idling is around 700 revolutions, the output is about 30 A, which is enough to cover 20 A necessary for the operation of the automobile 2 itself, and there is no remaining power. On the other hand, in the present embodiment, the battery 14 (DC48V) is built in the power supply device 1, and AC100V (maximum output 300W) can be obtained by using it together with the power from the in-vehicle battery 21 (DC12V). it can.

[Operation when charging]
FIG. 3 shows an operation at the time of charging the power supply device 1 during normal operation or the like (during DC power storage). The user connects the AC cable 33 for charging of the power supply device 1 to a home AC power supply (AC100V). As a result, predetermined DC power (DC 48 V) is stored (charged) in the built-in battery 14 through the AC / DC converter 13. Further, the display unit 15 displays a message or the like indicating a value or state such as current [A] or power [W] during charging.

[Operation during discharge]
FIG. 4 shows an operation when the power supply device 1 is discharged (when AC power is supplied) during a power failure or the like. The user connects the plug 31 a of the DC cable 31 of the power supply device 1 to the terminal (21 a) of the battery 21 of the automobile 2. Thereby, DC power (DC12V) from the battery 21 is input through the DC / DC converter 11 to obtain predetermined DC power (DC48V), and discharge the predetermined DC power (DC48V) from the built-in battery 14. Then, the home AC power supply (AC 100 V) is supplied to the multi-tap 40 through the DC / AC converter 12 and the AC cable 32. Since the power of the battery 21 is consumed, the engine of the automobile 2 is operated and the battery 21 is used while being charged. Further, the display unit 15 displays a message or the like indicating a value or state such as current [A] or power [W] during discharge.

[Usage (Work)]
The main usage method (user work) of the power supply apparatus 1 and the system is as follows.

  (Step S1) The user arranges the power supply device 1 in advance at home (indoor). Then, as described above (FIG. 3), the built-in battery 14 is charged from a household AC 100V. The cables including the cables (31, 32, etc.) connected to the power supply device 1 are handled as a set.

  Alternatively, the user may place the power supply device 1 (particularly in a charged state) on the automobile 2. However, charging with AC 100V is not possible when the vehicle 2 is mounted. When deployed in the automobile 2, the vehicle 2 is accommodated in a rear trunk or on / under a seat in the car depending on the configuration of the automobile 2.

  (S2) Assume that a power failure occurs at home. The user takes out the power supply apparatus 1 installed in the home and carries it near the automobile 2 as shown in FIG. 1 (or takes out the power supply apparatus 1 placed on the automobile 2).

  (S3) The user connects the plug 31a of the DC cable 31 of the power supply device 1 to the terminal 21a of the battery 21 of the automobile 2.

  (S4) The user connects the plug (32a) of the AC cable 32 to the output terminal portion 35 of the power supply device 1 (not required if already connected), and the multi-tap 40 at the other end of the AC cable 32 is desired indoors. Lead to the position.

  (S5) The user activates the automobile 2. That is, the power is turned on by the key to start the engine. Thereby, supply of DC12V from the battery 21 is ensured. If the built-in battery 14 is already charged as described above, AC power can be supplied and used for a certain period of time without operating the engine of the automobile 2.

  (S6) The user connects the plug of a desired power load (electric appliance) 50 to the multi-tap 40. Then, the user turns on and uses the power switch of the power load 50.

  As described above, according to the present embodiment, the AC power source (AC 100 V) can be used by utilizing the automobile 2 at the time of a power failure at home, and an inconvenient situation can be improved. In particular, expensive parts are not essential and can be used relatively inexpensively.

<Embodiment 2>
FIG. 5 shows a configuration of the power supply system and the power supply apparatus 1 according to the second embodiment. The power supply device 1 is a configuration example including a control unit 61, a communication unit 62, a solar power generation panel unit 63, and the like in addition to the same elements as those described above (FIG. 2).

  The control unit 61 is configured by an IC chip or the like, and performs control processing of the power supply device 1, for example, charge / discharge control processing. Note that the control unit 61 may perform control processing of the display unit 15, or the display unit 15 and the control unit 61 may be integrated. The communication unit 62 includes a communication interface board or the like, and performs communication processing with the outside. For example, wireless communication of a predetermined standard is performed.

  The control unit 61 communicates with the outside through the communication unit 62, and inputs information a1 (power load amount information, power failure information, etc.) from the outside. The control unit 61 makes a determination based on input information (a1) from the outside, and controls the AC power supply amount at the time of discharge, for example, according to the power load amount. Alternatively, charge / discharge switching is controlled based on the power failure information.

  The term “outside” as used herein refers to equipment such as a home (housing) connection box 51 and communication box 52, or other general wireless communication means, as will be described later (FIG. 6). As information a1, the power load amount information is information such as the load amount (power consumption, power usage state) of the power load 50 connected (used) at home or with the tap 40. The power outage information is information when a power outage or disaster occurs at home or in the area, and can be obtained from a system power network / information communication network (electric power company) or a wireless notification system.

  The solar power generation panel unit 63 is attached to, for example, the upper surface of the power supply device 1 and supplies the battery 14 with power generated by solar power generation. The battery 14 can be charged (charged) by placing the power supply device 1 outdoors during normal operation. As in the following modification, the power supply device 1 may be connected to the outside without including the panel (63).

[Modification 1]
FIG. 6 shows a system configuration of a modified example (modified example 1) with respect to the first and second embodiments. As a difference, the aforementioned AC cable 32 is configured as 32 '. That is, the other end side is not the tap 40 but the configuration of the plug 32b. The plug 32b of the AC cable 32 'is connected to equipment such as a connection box 51 in a home (house). And it connects to tap 40 'etc. with the wiring of AC100V from the connection box 51, and the power supply load 50 can be connected.

  The connection box 51 is a device for electrical connection, and may be an existing distribution board, meter, or the like connected to the grid power network, or a new one so as to facilitate cooperation with the automobile 2 and the power supply device 1. It is good also as an apparatus to provide. By interposing the connection box 51 between the automobile 2 and the power supply device 1 and the power load 50, the connection (retraction) work is facilitated and the degree of freedom is increased.

  In addition to the connection box 51, a communication box 52 (router, server, etc.) for connecting to the information communication network is provided. The connection box 51 and the communication box 52 may be replaced with a smart meter, a HEMS (home energy management system), or the like. And information a1 such as the above-mentioned power load amount information and power outage information from a smart meter, HEMS, etc. may be transmitted and acquired to the power supply device 1 side and used for control. In the case of a smart meter, HEMS, or the like, it is connected to the system power network and the information communication network, and automatically measures power, etc. in real time or at predetermined intervals and displays / stores it.

  Moreover, as shown in the figure, when a home (house) is provided with a power generation unit such as a solar power generation panel unit 63 ′, the power supply device 1 is connected to the power generation unit (63 ′) for charging. Good.

[Modification 2]
As another modified example (Modified Example 2), a function for increasing the idling rotational speed of the engine of the automobile 2 in accordance with the amount of the power load 50 and increasing the power supply amount (a function for increasing or decreasing the idling rotational speed) It is good also as a structure which has. For example, when the power load 50 connected to the tap 40 of the AC cable 32 becomes higher than a predetermined amount, the power supply device 1 increases the idling speed of the engine of the automobile 2 to increase the power supply amount. The details (implementation) of this function (means) include, for example, the following.

  (1) Mechanical type: At the time of use, a mechanical type adjustment mechanism mechanism unit is attached to the accelerator pedal of the automobile 2 by the user. This keeps and adjusts the state of depression of the accelerator pedal constant. As a result, the idling speed (adjustment of the throttle of the engine) is adjusted, whereby the AC power supply amount of the power supply device 1 is adjusted.

  (2) Electronic circuit method: The power supply apparatus 1 is provided with an electronic circuit unit that performs control processing for adjusting the idling rotational speed. For example, it is provided as a part of the control unit 61 described above. This circuit unit (idling speed adjusting unit) is linked to a circuit unit such as an ECU (engine control unit) of the automobile 2 by a control cable or the like, and is provided by providing control information for adjusting the idling speed. The control unit 61 (idling speed adjusting unit) of the power supply device 1 detects or acquires the amount of the power load 50 connected to the tap 40 (or the connection box 51 or the like), and according to the amount, Adjust the idling speed as follows. Thereby, the AC power supply amount is adjusted.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  For example, the power supply device 1 and the system can be used not only at the time of a power failure or emergency. Since it can be used outdoors, it can also be used as a power source during leisure such as camping and fishing (such as overnight in a car).

  Further, the power supply apparatus 1 can be used as a power source in the case of a power failure and when there is no power source in a marine vessel or the like as well as the land vehicle 2. In the case of ship use, as a method for charging the battery 14, a configuration in which normal charging and power storage by the solar power generation panel unit 63 is preferable.

  The present invention can be used for a household power supply system and the like.

  DESCRIPTION OF SYMBOLS 1 ... Power supply device (inverter), 2 ... Automobile, 11 ... DC / DC conversion part, 12 ... DC / AC conversion part, 13 ... AC / DC conversion part, 14 ... Battery, 15 ... Display part (meter), 16 DESCRIPTION OF SYMBOLS ... Protection circuit, 21 ... Battery, 31 ... DC cable, 32 ... AC cable, 33 ... Charging AC cable, 34 ... Input terminal part, 35 ... Output terminal part, 40 ... Tap (multi-tap), 50 ... Power load ( Electrical appliances).

Claims (12)

A power supply system for supplying AC power based on DC power,
A vehicle equipped with a battery that is a DC power source, a power supply device, a power load including an electrical appliance that requires an AC power source, a DC cable, an AC cable, and a charging AC cable connected to the power supply device; Have
The DC cable connects the battery terminal of the automobile and the input terminal portion of the power supply device,
The AC cable connects the output terminal portion of the power supply device and the power load,
The charging AC cable connects an AC power source,
The power supply device
DC / AC conversion function for inputting first DC power by the battery of the automobile and outputting first AC power corresponding to home based on DC / AC conversion;
A power storage function for storing the second DC power by a built-in battery based on the input of the second AC power by the AC power source;
When charging, the first AC power from the AC power supply is input through the charging AC cable, and the second DC power is stored in the built-in battery based on AC / DC conversion.
At the time of discharging, the first DC power is input from the battery of the automobile through the DC cable, and the second DC power is obtained based on DC / DC conversion, and the second DC power is acquired from the built-in battery. A power supply system that discharges power and supplies the first AC power to the power load through the AC cable based on DC / AC conversion. The power supply system according to claim 1,
The automobile is a gasoline engine car,
The DC cable has a plug connected to a terminal of a battery of the automobile,
The AC cable has a tap for connecting the plug of the power load,
The power supply device fixedly connects the DC cable and the charging AC cable,
The power supply device
A DC / DC converter that inputs first DC power from the battery of the automobile and converts it to the second DC power;
A DC / AC converter that inputs the second DC power, converts the first DC power into the first AC power, and outputs the first AC power;
An AC / DC converter that inputs the second AC power through the charging AC cable and converts the second AC power into the second DC power; and
The built-in battery is connected to each of the conversion units, stores the second DC power,
During charging, the second AC power from the AC power supply is input through the charging AC cable, and the second DC power is stored in the built-in battery through the AC / DC converter,
At the time of discharging, the first DC power is input from the battery of the automobile through the DC cable, the second DC power is obtained through the DC / DC converter, and the second DC power is acquired from the built-in battery. A power supply system that discharges DC power and supplies the first AC power to the power load through the AC cable through the DC / AC converter. The power supply system according to claim 1,
The first DC power is DC12V,
The second DC power is DC48V,
The first and second AC powers are AC100V,
The second AC power supplied to the power load by the AC cable has a maximum output of 300 W,
The built-in battery is composed of a lithium ion secondary battery. A power supply device that supplies AC power based on DC power,
It is a configuration for connecting a vehicle equipped with a battery that is a DC power source, a power load including an electrical appliance that requires an AC power source, a DC cable, an AC cable, and a charging AC cable.
The DC cable connects the battery terminal of the automobile and the input terminal portion of the power supply device,
The AC cable connects the output terminal portion of the power supply device and the power load,
The charging AC cable connects an AC power source,
The power supply device
DC / AC conversion function for inputting first DC power by the battery of the automobile and outputting first AC power corresponding to home based on DC / AC conversion;
A power storage function for storing the second DC power by a built-in battery based on the input of the second AC power by the AC power source;
When charging, the first AC power from the AC power supply is input through the charging AC cable, and the second DC power is stored in the built-in battery based on AC / DC conversion.
At the time of discharging, the first DC power is input from the battery of the automobile through the DC cable, and the second DC power is obtained based on DC / DC conversion, and the second DC power is acquired from the built-in battery. A power supply device that discharges power and supplies the first AC power to the power load through the AC cable based on DC / AC conversion. The power supply device according to claim 4, wherein
The automobile is a gasoline engine car,
The DC cable has a plug connected to a terminal of a battery of the automobile,
The AC cable has a tap for connecting the plug of the power load,
The power supply device fixedly connects the DC cable and the charging AC cable,
The power supply device
A DC / DC converter that inputs first DC power from the battery of the automobile and converts it to the second DC power;
A DC / AC converter that inputs the second DC power, converts the first DC power into the first AC power, and outputs the first AC power;
An AC / DC converter that inputs the second AC power through the charging AC cable and converts the second AC power into the second DC power; and
The built-in battery is connected to each of the conversion units, stores the second DC power,
During charging, the second AC power from the AC power supply is input through the charging AC cable, and the second DC power is stored in the built-in battery through the AC / DC converter,
At the time of discharging, the first DC power is input from the battery of the automobile through the DC cable, the second DC power is obtained through the DC / DC converter, and the second DC power is acquired from the built-in battery. A power supply device that discharges DC power and supplies the first AC power to the power load through the AC cable through the DC / AC converter. The power supply device according to claim 4, wherein
The first DC power is DC12V,
The second DC power is DC48V,
The first and second AC powers are AC100V,
The second AC power supplied to the power load by the AC cable has a maximum output of 300 W,
The built-in battery is composed of a lithium ion secondary battery. The power supply system according to claim 1,
The power supply device displays a state of the charge / discharge, and displays and displays a current value and a power value at the time of the charge / discharge;
A protection circuit that shuts off when a load amount of the power load connected to the AC cable exceeds a predetermined amount;
A communication unit that performs communication processing with the outside;
And a control unit that performs the charging and discharging control processing based on information acquired from the outside through the communication unit. The power supply system according to claim 7, wherein
The said control part performs the control process which switches the operation | movement of the said charge and discharge based on the power failure information acquired from the outside through the said communication part, The power supply system characterized by the above-mentioned. The power supply system according to claim 7, wherein
The said control part performs the control process which increases / decreases the power supply amount at the time of the discharge based on the power load amount information acquired from the outside through the said communication part, The power supply system characterized by the above-mentioned. The power supply system according to claim 1,
The power supply device is configured to incorporate or externally connect a photovoltaic power generation panel unit,
A power supply system characterized in that DC power from the solar power generation panel unit is stored in the built-in battery. The power supply system according to claim 1,
The power supply device is connected to a connection box provided in a household house through the AC cable, and is connected to the power load through a wiring from the connection box.
The connection box grasps the power outage state of the house in the home and the load amount of the power load,
The power supply device determines a power outage state of the home in the home and a load amount of the power load through communication with the connection box, and performs a control process of power supply during the discharge based on the determination. Power supply system characterized by The power supply system according to claim 1,
The terminal of the vehicle battery is provided as a terminal at a predetermined location in the vehicle by wiring of DC power from the mounting position of the battery of the vehicle, and the DC cable is connected to the terminal in the vehicle. Power supply system.