JP4980735B2 - Power supply apparatus and power supply system - Google Patents

Description

  The present invention relates to a power feeding device and a power feeding system, and more particularly to a power feeding device and a power feeding system capable of optimal power feeding according to the specifications of a load device.

  In recent years, with the advancement of electronic technology, portable electronic devices such as mobile phones, notebook PCs, mini PCs (= pocket PCs), portable audio devices, and PDAs are rapidly spreading. These portable electronic devices occupy a large number of systems that operate using a secondary battery as a power source, and these systems are accelerating their functions from the viewpoint of user convenience. As these systems become more sophisticated in the market, there is a new problem that the power consumption of the system increases and the operating time is shortened.

Nowadays, secondary batteries themselves are operated for a long time, so new battery active materials and high-capacity battery structures are developed to increase energy density, and Ni-hydrogen batteries and Li-ion batteries are realized. Has reached. However, in the future, in order to cope with the increasing amount of information and higher speed of these portable electronic devices, there is a need for a power source with a higher output density, that is, a small generator capable of long-term continuous operation of portable electronic devices. Expected to increase. Several proposals regarding fuel cells have been made as one of the small generators. As one of the proposals, Patent Literature 1 and Patent Literature 2 describe a power supply device that inserts and removes a fuel cell into and from an electronic device.
JP 2006-140071 A JP 2006-260120 A

  By the way, these portable electronic devices often have different internal drive voltages depending on manufacturers and models. By the way, the current drive voltages are 12V and 14.8V for notebook PCs, 3V for digital cameras, mobile phones, 3.7V, and PDA 5.2V. These charging methods for portable electronic devices have dedicated AC adapters for each product, and many AC adapters are scattered around the users who use them, which is complicated.

  The present invention is for solving this problem, and realizes the function of changing the waveform of the voltage applied to the load according to the load power supply specification and the voltage value by facilitating the exchange of the load device power supply specification information. An object of the present invention is to provide an efficient power supply apparatus and power supply system that can be applied to all portable electronic devices.

In order to solve the above problems, a power supply device according to the present invention includes a power generation unit that generates electric power, a power storage unit that stores electric power generated by the power generation unit, and waveform shaping and voltage values in an output voltage to a load device. And a voltage waveform shaping unit that controls the ON / OFF of the voltage waveform shaping unit and a control unit that controls each unit. The power supply apparatus according to the present invention includes connection confirmation means for confirming that the connection between the power supply apparatus and the load apparatus is made, and the load apparatus power supply indicates the power supply specifications of the load apparatus between the power supply apparatus and the load apparatus. specification information, and has a bidirectional communication means for transmitting and receiving information indicating the operation status of each device of the power supply device and the load device, the load device based on the load device power supply specification information and power supply means for supplying power ing. Furthermore, after confirming that the power supply device and the load device are connected by the connection confirmation means, the voltage waveform shaping unit supplies power to the load device according to the load device power supply specification information received via the bidirectional communication means. Controls the start or stop of power feeding based on information indicating the operating state of each other device that is transmitted and received between the power feeding device and the load device via two-way communication means by varying the waveform shaping and voltage value in the voltage It has a feature. Therefore, the load device power supply specification information indicating the power supply specification of the load device and the information indicating the operating state of each device of the power supply device and the load device can be acquired, respectively, so that the load device can be accurately charged, and the load status is Thus, it is possible to provide a power supply apparatus that can grasp and efficiently use the power generation unit and can monitor a load apparatus abnormality and a power generation abnormality .

  Moreover, it is preferable that a power generation part has a solar power generator or a fuel cell generator.

  Furthermore, when a power supply request signal for requesting power supply from the load device is received via the bidirectional communication means, the communication line and the power supply line can be individually controlled by starting the power supply to the load device. Next, the power supply line can be started up.

  In addition, when the connection confirmation signal for confirming the connection between the power supply device and the load device is OFF by the connection confirmation means, or when the charge end signal from the load device is confirmed, the power supply from the power supply device is stopped. Therefore, when the power generation unit is protected from an operator's random operation and a fuel cell is used for the power generation unit, fuel consumption can be reduced.

  Furthermore, the power supply means has at least a plurality of power supply ports. And when it is determined that the power supply capacity of the power supply device is exceeded based on the total consumption capacity of the load device recognized by the bidirectional communication means and the load current detection result during power supply when connected to a plurality of load devices, The power supply amount control means for controlling the total output power supply amount to be held within the power supply capability of the power supply device by sequentially stopping the power supply operation from the load device having a large load capacity until it becomes within the power supply capability of the power supply device, and the power supply status Display means for displaying. Therefore, when supplying power to multiple loads, it can be managed so as not to exceed the charging capacity at all times. If the capacity is exceeded, the operator's reason for stopping charging and the stopped channel are displayed to improve operability. be able to.

  If there is a load device for which load information related to the load device is determined to be unknown among the plurality of load devices, only the power supply to the load device is stopped, and the load device corresponding to the display unit and the power supply stop are displayed. Therefore, when power is supplied to a plurality of loads, it is possible to protect the power supply apparatus from being overloaded.

  Furthermore, by making it possible to supply power to multiple load devices up to the upper limit of the power supply capacity of the power supply device based on the load information related to the load device, load management can be performed for multiple loads and power can be supplied at the same time. Can be increased.

  In addition, by having connection detection means for detecting that the load device is connected to the power supply port of the power supply device and storage means for storing the power supply priority order, when charging to a plurality of loads, the order of charging Management can be performed.

  Furthermore, by having a changing means for changing the power supply priority order, the power supply order can be temporarily increased in an emergency or the like.

  Further, since the storage means is a non-volatile storage element, it is possible to prevent the charging order information from disappearing when the power supply of the charging device is temporarily turned off, such as during movement.

  Furthermore, since the specification of the power supply port of the load device can be connected to the power supply device and is a unified specification, the power supply device can be provided with versatility.

  Further, by providing a power supply device information update function, it is possible to upgrade the system information of the power supply device.

  Furthermore, by providing a stopping unit that forcibly stops the power supply from the power supply apparatus, it is possible to protect the load apparatus and the power supply apparatus from abnormal power supply.

  In addition, after a specified time has passed after the load device is not connected, it is possible to suppress wasteful power consumption and fuel consumption when the fuel cell is used for the power generation unit by stopping the devices other than the connection confirmation unit. .

  Furthermore, even if the load device power supply specification information is unknown, by providing means to enable manual power supply, when a load device with unknown load device power supply specification information is connected, or when the load device specifications are clear Power can be supplied manually.

  Moreover, by providing the power generation capacity variable means that varies the power supply capacity according to the power generation capacity of the power generation section, the number of power supplies that can be supplied simultaneously can be varied according to the power generation capacity of the power generation section.

  Furthermore, the power generation unit can be protected by providing power generation abnormality detection means for detecting power generation abnormality of the power generation unit.

Further, a power supply system as another invention stores power generated by a load device and a power generation unit that generates power in a power storage unit, and waveform shaping and a voltage value in an output voltage to the load device by a voltage waveform shaping unit. The voltage waveform shaping unit is ON / OFF controlled by the control unit, and the power supply device that can control each unit is constructed. The power supply system of the present invention transmits and receives load device power supply specification information indicating the power supply specifications of the load device between the load device and the power supply device via the bidirectional communication means, and based on the load device power supply specification information. The power supply is supplied to the load device, and the start or stop of the power supply is controlled based on the information indicating the operating state of each device transmitted / received between the power supply device and the load device via the bidirectional communication means. is there. Therefore, by acquiring the load device power supply specification information indicating the power supply specification of the connected load device, it is possible to charge the load device accurately on the power supply device side without having to consider the load device specifications. The situation can be grasped, the power generation unit can be efficiently used in the entire system , and the load device abnormality and the power generation abnormality can be monitored .

  According to the present invention, it is possible to eliminate many dedicated AC adapters scattered around the operator, and it is possible to free from the troublesomeness of AC adapter management. In addition, by using a small power generation function using a fuel cell, a solar cell, or the like for the power generation unit, it is possible to release the operator from the troublesome charging work. Furthermore, by using a fuel cell that is said to have high energy efficiency in the power generation unit and exchanging load device power supply specification information between the charging device and the load device, the load device specification becomes clear, and the amount of load current used is reduced. If it is low, by controlling the fuel concentration of the fuel cell, etc., the amount of power generation can be increased or decreased, and optimal control according to the load device specifications can be made at all times, and wasteful fuel consumption of the fuel cell unit can be kept low. Become.

  FIG. 1 is a schematic diagram showing the entire power supply system of the present invention. As shown in the figure, the power supply system of the present invention includes a power supply device 1000 such as a generator using a solar power generator or a fuel cell generator or a combination of them, a mobile phone, a notebook PC, and a mobile audio. A load device 200 that is a portable electronic device such as a device or a PDA, and a power supply device 100 and the load device 200 are configured to include a single cable 300 including a power supply line and a communication line. The supplied power is supplied to the load device 200 through the cable 300 and charged.

  FIG. 2 is a schematic view showing a state when the power feeding device of the present invention is used. In the figure, the same reference numerals as those in FIG. 1 denote the same components. As shown in the figure, an operator who is a user of the power supply device of the present invention registers in advance the load device power supply specification information including the load device identification code or information on the input voltage and power consumption in the power supply device 100 in advance. Thus, even when the load device 200 is randomly connected by the operator, the power supply device 100 determines the model of the load device 200 based on the load device power supply specification information, and performs optimum charging according to the load device 200. Therefore, by carrying this power supply device, the operator is freed from inconvenience due to running out of batteries and troublesome charging, regardless of the type of portable electronic device, and can use the portable electronic device comfortably.

FIG. 3 is a block diagram showing the system configuration of the power feeding system of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same components.
The power supply apparatus 100 shown in the figure stores a power generation unit 101 composed of a generator using a solar power generator or a fuel cell generator or a combination of those technologies, and power generated by the power generation unit 101. A power storage unit 102 using a secondary battery, a super capacitor, a capacitor, or the like provided in the battery, and a power supply voltage to the load device 200 based on load device power supply specification information from the connected load device 200 by an output voltage variable signal Voltage waveform shaping unit 103 that varies the output voltage using a PWM signal and a smoothing circuit, and an ON / OFF control signal that stops hardware output voltage when charging stop information or a load device abnormality is detected by a response from load device 200 And a control unit 104 that controls and manages the configuration thereof and manages I / F information with the load device 200. On the other hand, the load device 200 includes a power supply unit 201 that converts voltage supplied from the power supply device 100 side, a power storage unit 202 that stores power supplied from the power supply device 100 side, and a load device power supply specification on the power supply device 100 side. It includes a control unit 203 that transmits information or controls the power supply unit 201 based on a control signal transmitted from the power supply apparatus 100 side. The voltage waveform shaping unit 103 is configured by a DC-DC converter.

  Here, as shown in FIG. 4, the cable 300 for the power supply device to supply power to the load device includes a communication line contact part 301-1, a power supply line contact part 301-2, a lock claw 301-3, A connector 301 having a lock claw releasing snap portion 301-4 is provided. In addition, the hole shape of the contact part 301-2 of the power supply line has been devised to prevent the back piercing, such as changing the shape of the contact part and the outer shape of the plug part. Further, when the cable 300 is connected to the load device 200, communication is performed between the power supply device 100 and the load device 200 via a communication line in the cable 300. A specific communication exchange is shown in FIG. As shown in the figure, in the communication line, a communication power supply, a clock, a connection confirmation signal, a reply enable, a transmission enable, and a data line having a voltage defined in advance on the transmission / reception side are exchanged.

Next, signal exchange in the power feeding operation by the power feeding device of the present invention will be described with reference to FIG. 5 and FIG. 6 of the time chart.
First, when the power supply device 100 and the load device 200 are connected by the cable 300, the load device remaining charge with respect to the reference voltage (which defines the lower limit voltage of the load device power storage unit) by the comparator unit provided in the load device 200. The amount is confirmed and the connection confirmation signal is turned on (time t ₀ ). If the comparison result is equal to or less than the reference value of the power supply capacity, power is supplied from the power supply apparatus 100 to the control unit 203 of the load apparatus 200 through the communication power supply switch. However, if the comparison result in the comparator unit of the load device 200 exceeds the reference value, it is determined that communication is possible, the communication line is opened, and after receiving a communication power usage confirmation command from the power supply device 100, the status The controller 23 is started up with its own power at the same time as the communication line power supply unnecessary signal is transmitted by the signal. At this time, depending on the load device 200, there is a load device that does not have a power storage unit. Therefore, a device that does not have a power storage unit can be connected and connected by a connection confirmation signal. If the power supply unnecessary signal for the communication means cannot be received by the power supply apparatus, power supply from the power supply apparatus 100 is performed thereafter. Thereafter, communication between the power supply apparatus 100 and the load apparatus 200 is started via the communication line.

When data (= command) is transmitted from the power supply apparatus 100 to the load apparatus 200, the control unit 104 of the power supply apparatus 100 first executes a level confirmation operation of the connection confirmation signal, and the connection confirmation signal is at the L level. , It is determined that the load device 200 is in a connected state, and only the transmission enable signal is changed from the H level to the L level in synchronization with the clock (time t ₁ ). To recognize that there is information to be transmitted by placing a command signal on the data line (time t ₁ to time t ₂ ). Thereafter, in synchronization with the clock, while the transmission enable signal is at the L level (time t ₃ to time t ₄ ), load information is transmitted as a command signal, and an instruction is given to the load device 200.

When data (= status) is transmitted from the load apparatus 200 to the power supply apparatus 100, when the command is transmitted from the power supply apparatus 100, the control unit 23 of the load apparatus 200 indicates that the connection confirmation signal is at L level. By confirming that it exists, it recognizes that the electric power feeder 100 and the load apparatus 200 are in a connection state. Next, the reply enable signal is changed from the H level to the L level in synchronization with the clock so that the power supply apparatus 100 recognizes that it is now ready to put information on the data line and transmit it as a status signal (time t _1). To time t ₂ ). Thereafter, the status signal is transmitted while the reply enable signal is at the L level in synchronization with the clock (time t ₃ to time t ₄ ), and a confirmation response is returned in response to the request instruction from the power supply apparatus 100. Then, a “preparation completion” is transmitted to the load device 200 to notify the end of power supply preparation (time t ₅ to time t ₆ ). After the transmission, when the “power supply request signal” (time t ₇ to time t ₈ ) of the power supply request is returned from the load device 200 and confirmed, the voltage waveform shaping unit 103 of the power supply device 100 turns on the output voltage ON / OFF signal. (Time ₉ ), power supply to the load device 200 is started. After power supply is started, the power supply operation is held until a status signal of a charge end signal is transmitted from the load device 200 or the connection confirmation signal of the cable 300 changes to H level (time t ₁₀ ).

  In the above command and status confirmation operation, the contents indicating the remaining supply and errors can be confirmed at an early stage by performing an information exchange operation for confirming periodically between the devices. This makes it possible to quickly respond to power supply interruptions. The relationship between other specific commands and status signals is shown in the table below.

  In this embodiment, the local I / F is used, but the communication line can also be implemented by communication means applying general-purpose RS232C or USB-I / F. In addition, when considering a method that supports a wide variety of portable electronic devices that are currently on the communication line market, there is no need to replace the conventional I / F cable or to add a function without the need for a cable. When considered, a method of providing a one-way communication IC tag or the like having a function of only receiving unilaterally information limited to a load device on the load device side or a mutual device in a handshake form like this embodiment A wireless communication path 400 (see FIG. 7) using a two-way communication IC tag that communicates while confirming the situation is considered to be an effective means. Furthermore, by combining these wireless I / F and power feeding technology using electromagnetic induction, it is possible to charge in a completely wireless manner. Further, in order to prevent malfunction of the communication means due to the influence of electromagnetic waves or the like, it is possible to construct a communication means that is not affected by electromagnetic noise by using light such as an optical fiber cable.

Next, a power feeding operation in the power feeding system of the present invention will be described with reference to FIG. 5 and FIG. 8 showing a power feeding operation flow.
First, when the cable 300 is connected between the power supply apparatus 100 and the load apparatus 200, the connection confirmation signal of the communication line changes from the H level to the L level. Thereafter, when the power supply device recognizes that the connection confirmation signal has changed from the H level to the L level, the communication power source ON / OFF switch 106 is turned ON to temporarily enable the communication means of the load device. Is activated, and a power feeding operation is started for the load device.

  Next, on the load device 200 side, the capacity check of the power supply of the load device 200 is performed by hardware using a comparator, and it is determined whether the control power of the load device 200 is to be supplied from the power supply line or the power supply of the power storage unit 205. And decide (steps S101 to S103). After that, when the communication power supply is secured, the voltage level of the connection confirmation signal is confirmed for confirming the connection of the communication cable between the power supply apparatus 100 and the load apparatus 200. If the confirmation result indicates L level, it is determined that the connection is established (step S104; YES), and if it indicates H level, it is determined that the connection is not established (step S104; NO). ). If the confirmation result of the connection confirmation signal is in the L state (step S104; YES), the power supply apparatus 100 changes the transmission enable signal from the H level to the L level in synchronization with the clock, and displays 0002 (Hex) on the data line. : A model confirmation signal command is transmitted to the load device 200 (step S105). After transmission, the transmission enable signal is returned from L level to H level, and command transmission is terminated.

  Upon receiving the command, the load device 200 changes the response enable signal from the H level to the L level in synchronization with the clock, returns the model code as the status between 0200 and EFFF (Hex) on the data line, and is connected. The load device power supply specification information is returned in order to inform the power supply device 100 of what the load device 200 is in (step S106; YES). After the reply, when the power supply apparatus 100 receives the model code from the load apparatus 200, the power supply apparatus 100 compares the load apparatus type information stored in the power supply apparatus 100 in advance to determine the load apparatus type (step S107). Thereafter, based on the load device type and the model code, the load device power supply specification information stored in advance for each load device type is selected, and the supply voltage to the load device 200 is determined. After the determination, the voltage waveform shaping unit (DC-DC converter in the present embodiment) 103 including a PWM signal and a smoothing circuit 103 varies the output voltage value with the output voltage control signal according to the load device power supply specification information, and at the same time While confirming that the power supply capacity of the power supply apparatus 100 is not exceeded, the load apparatus 200 is notified of the completion of power supply preparation by transmitting “command 0008 (Hex): power supply preparation completed” (steps S108 and S109). After the transmission, when the power supply request signal “power supply start request signal: status signal 0030 (Hex)” is returned and confirmed from the load device 200 (step S110; YES), the voltage waveform shaping unit (actually a DCDC converter or the like) of the power supply device 100 ) 103 turns ON the output voltage ON / OFF signal, and starts power feeding to the load device 200 (step S111). After the start of power supply, the power supply operation is held until the status signal 00010 (Hex) of the charge end signal is transmitted from the load device 200 or the connection confirmation signal of the cable 300 changes to the H level (cable not connected) level. (Step S112; NO, Step S113; YES, Step S114; YES).

  In addition, while the power supply operation continues, load devices and power generation abnormalities, and if the generator is a fuel cell, periodically exchange commands or statuses to check whether there is an abnormality in the fuel replenishment signal, etc., and monitor charging errors Check for abnormality by operation. Further, as shown in FIG. 13, a specific method of detecting the power generation ERROR of the power generation unit always grasps the power generation voltage of the power generation unit with the power generation voltage detection unit 113 provided as the power generation capability detection unit of the power generation unit of the power feeding device. . Then, it is determined that the power generation unit has a power generation abnormality such as when the power generation capacity is suddenly increased (when the amount of change within a specified time is large) as a result of detection by the power generation voltage detection means. Stop power generation. However, at this time, power supply to the load device is continued until the lower limit specified value (= power supply limit value) of the power storage unit is reached.

  Thereafter, the power feeding operation to the load device 200 is stopped (step S112; YES, step S113; NO, step S115), and the operator is informed through the display unit that the power generation unit has stopped.

  Note that the monitoring operation for the communication error is also periodically performed during the charging error monitoring operation. Specifically, when a communication error phenomenon occurs such that the status does not return from the load device 200 side even if a command is transmitted multiple times from the power supply device 100 side (step S106; NO, step S116; YES, step S110). NO, step S118; YES), the CPU determines that there is a problem in the communication system, and stops the power feeding operation. Thereafter, data for notifying the operator of the power supply stop is transmitted to the display control unit, and communication error processing such as displaying the reason for the stop on the display unit is performed (steps S117, S119, and S120).

  Here, if a communication error or an abnormality of the load device 200 occurs, a large damage or failure occurs in the power supply device 100 (for example, if a failure occurs in a low resistance state on the load device side, a large amount of power is supplied from the power supply device 100. And there is a risk of damaging the I / F unit 105, the power generation unit 101, and the power storage unit 102. Further, when communication is not established, the power supply is disabled, so the load device 200 is used for a long time. There is a risk of giving Therefore, as shown in FIG. 10, when an abnormal signal is issued from the control unit 203 of the load device 200, the connection confirmation signal is used as a forced stop signal that is an emergency stop signal so that processing such as power supply stop can be performed immediately. use. Specifically, as shown in FIG. 10, the connection confirmation signal is connected to the INT terminal (= interrupt control terminal) of the control unit 104 on the power supply apparatus 100 side through the forced stop signal and the AND circuit, and the connection confirmation When the signal changes from L to H level, the control unit 104 performs processing with high priority. After processing and recognition by the control unit 104, power supply from the control unit 104 to the load device 200 is stopped, the power supply ON / OFF lamp is turned OFF (in this embodiment, red display), and then the display control unit A stop display signal is transmitted to the display unit 107 of the power supply apparatus 100 to indicate to the operator that power supply has been forcibly stopped.

  Note that the power supply device of the present invention loads a load in the storage unit (hard disk) in advance in order to verify the power supply specification to the load device based on the response to the inquiry of the model code from the power supply device to the load device. It is necessary to register in advance the device model code and the power supply specification information corresponding to the model code. For this reason, when using a new model later, it is necessary to add information. Therefore, the load information from the personal computer is downloaded to the SD card 500 as shown in FIG. 13 to be described later, and after written in the SD card 500 as shown in FIG. 9, the SD card 500 is inserted into the SD card port 109 of the power supply apparatus 100. By operating according to the display screen 52 using an arrow key or a confirmation key, information in a system storage unit (hard disk in the present embodiment) provided in the apparatus can be updated. In the above description, a method of once downloading from a personal computer and updating the system via a storage medium such as an SD card is shown in the present embodiment. However, as shown in FIG. And a LAN_I / F circuit are provided to connect to the network by performing communication processing with the CPU, and it is possible to provide a function for directly downloading and writing system updates from a personal computer. If there is no load information in the system storage unit (hard disk in this embodiment) provided in the power supply device of the present invention, it is determined that the load device specification is unknown, and power supply is performed from the viewpoint of protection of the power supply device. It stops and displays on the display part 107 provided in the electric power feeder 100 in order to notify an operator that the specification of a load apparatus is unknown.

  Note that the shape, I / F configuration (connector signal arrangement and hardware specifications), and software communication specifications are common for the receiving connector of the power supply cable of the load device that can be connected to the power supply device of the present invention in order to provide versatility. . Of course, it is needless to say that the maximum supply load specification of the power supply apparatus is assumed when the specifications are unified.

  Furthermore, the power storage unit has an output capacity equal to or greater than a specified value, and the connection confirmation signal indicates an H level (represents a state in which the load device is not connected) for a certain period of time (about 15 minutes in this embodiment). If there is a load device connected at any time, only the remaining capacity confirmation signal of the control unit, communication means, and power storage unit is in the operating state, always in the load connection monitoring mode state, and other functions are OFF By setting the state, it is possible to suppress wasteful power consumption of the power storage unit. In particular, when a fuel cell is used in the power generation unit, the power generation operation should not be stopped until the power storage unit has an output capacity greater than a specified value or reaches a specified value. By stopping power generation, wasteful fuel consumption can be suppressed, and a great effect can be expected. At this time, in order to further enhance the effect, a connection confirmation signal in the communication line and a sleep mode of the CPU are used, and a part of the interrupt confirmation terminal to which the connection confirmation signal is connected and the remaining capacity confirmation signal of the power storage unit are included. The load connection monitoring mode can also be realized by performing standby control using an interrupt function in which only a circuit is in an operating state and other circuits are in a stopped state.

  Here, if there is no load information in the system storage unit (hard disk in this embodiment) provided in the power supply device, it is determined that the load device specification is unknown, and the power supply is stopped from the viewpoint of protection of the power supply device. The power supply ON / OFF indicator lamp of the channel is set to GREEN display (charging OFF display), indicating that charging is not performed, and supplying power to inform the operator that the specifications of the load device are unknown Channel No. in which power supply is stopped on the display screen provided in the apparatus. Display the reason for suspension and information update request. At this time, if the operator himself or herself clearly grasps the connected load device power supply specifications based on the product catalog and specifications, the display unit 107 provided in the power supply device of the present invention as shown in FIG. Use the arrow key and move key to move the cursor, and follow the interactive instructions for display on the display unit 107 to advance the operation using the arrow key and confirm key and input the power supply usage of the load device to recognize the load device to the power supply device And providing a function that enables power supply from the power supply apparatus. By doing so, when a load device for which the power supply specification information of the load device is unknown is connected, it is possible to further enhance versatility as the power supply device of the present invention by providing a function capable of manually supplying power. .

  When the operator inputs the load specifications manually and uses it, confirm that the current flowing through the actual load is within the output range of the power feeder after starting power generation, or insert a fuse in the output terminal of the load device. Or, by using the overcurrent protection function of the DC-DC converter, it is possible to protect from overcurrent as in normal use.

  Furthermore, a plurality of portable electronic devices are flooded in the market, and there is a demand for using a plurality of portable electronic devices at the same time in view of usage patterns in these markets. For example, I often see them on street corners and on trains, such as scenes where mail operations are performed on a mini PC (= pocket PC), PDA or mobile phone while listening to a portable audio device. In view of this, a power supply apparatus will be described that allows multiple portable electronic devices to be used simultaneously without worrying about running out of batteries or bothering charging.

  In addition, since the power consumption amount of the load device can be grasped by providing the power supply line and the communication line to the load device, for example, in order to realize a power supply device with 3 ports of a 100 W power supply plug, for example, 100 W × Although a power generation unit having an output capacity of 3 = 300 W is required, it is possible to reduce the output capacity of the power generation unit by providing communication means, and the system can be designed to be small overall. Specifically, for example, when realizing a power supply unit with a 200W capacity and a 100W power supply plug with three ports, if the total load capacity of the three ports is 200W or less, the three-port simultaneous charging is performed as it is. Can be possible. If three 100W loads are connected, the power supply start time needs to be divided into two and one charging, but the power generation unit can be designed with a 200W class size. There is an advantage that it can be downsized. Furthermore, when using a fuel cell that is said to have high energy efficiency in the power generation unit, the specifications of the load device are clarified by exchanging the load device power supply specification information with a common communication means between the charging device and the load device, When the amount of load current used is small, it is possible to reduce the fuel concentration of the fuel cell, reduce the amount of power generation, and keep fuel consumption low. That is, the power generation efficiency can be adjusted according to the load device.

  11 and 12 are perspective views showing the power feeding device of the present invention. FIG. 13 is a block diagram showing another configuration of the power supply apparatus of the present invention. As shown in FIGS. 11 to 13, a plurality of power supply ports 110 including a power supply unit and a communication unit are provided, and a plurality of load devices 200 can be connected.

  First, when the power supply plug from the load device is connected to the power supply port 110 of the power supply device 100 shown in FIGS. 11 and 12, the communication means provided in the power supply plug is also connected at the same time, and the connection confirmation signal in FIG. Changes to L level. When the power supply apparatus recognizes that the connection confirmation signal has changed from the H level to the L level, the communication power supply ON / OFF switch 106 is once turned on to enable the function of supplying power from the power supply apparatus to the load apparatus. Next, the load device side confirms the remaining capacity of the load device power supply with a comparator, and determines whether to control the load device from the communication means or the power source of its own power storage unit. The result is transmitted as a status from the load device. When it is determined that the communication means becomes effective later and operates with the power supply capacity of the load device itself, the communication power ON / OFF switch 106 is turned OFF and the communication power is turned OFF. Then, the voltage level of the connection confirmation signal is confirmed to confirm the connection of the communication cable. If the confirmation result indicates L level, it is determined that it is connected, and if it indicates H level, it is determined that it is not connected. If the confirmation result of the connection confirmation signal is L, the power supply apparatus changes the transmission enable signal from the H level to the L level in synchronization with the clock, and the “0002 (Hex): model confirmation signal” command is displayed on the data line. To the load device. After the transmission, the transmission enable signal is returned to the H level, and the command transmission is terminated. Next, the load device that received the command changes the reply enable signal from the H level to the L level in synchronization with the clock, and returns the model code “02000-EFFF (Hex): model code” as the status on the data line. The load device power supply specification information is returned to the power supply device in order to notify the connected load device. When the power supply device receives the model code from the load device, it compares with the information stored in the power supply device in advance to confirm what type of load device it is, and based on the type and model code, Determine the power supply specifications. At the same time as checking the model, the total capacity of the connected load devices is obtained from the load power consumption information in the load device power supply specification information. When it is determined that the power supply capability of the power supply device is not exceeded, the power supply start is determined. .

  After the power supply is determined, the output voltage value is varied by the output voltage control signal according to the load device power supply specification information in the voltage waveform shaping unit (actually a DC-DC converter, etc.) consisting of a PWM signal and a smoothing circuit, and at the same time power supply It is confirmed that the power supply capacity of the device has not been exceeded, and a command “0008 (Hex): Power supply ready” is sent to the load device to notify that the power supply preparation has been completed. After that, when the status signal “00030 (Hex): Power supply request signal” is returned from the load device as the power supply start request signal, the voltage waveform shaping unit (actually a DCDC converter, etc.) of the power supply device turns on the output voltage ON / OFF signal. Then, power supply to the load device is started.

  Then, after the start of power supply, the load device outputs a charging end signal status signal 00010 (Hex) or until the communication cable connection confirmation signal changes to the H level (no cable connection) level, Abnormality, when the generator is a fuel cell, there is no abnormality in the fuel replenishment signal, etc., or there is no secondary battery charging error, etc. The power supply operation to the load device of the power supply device is held. During communication, communication errors are periodically monitored. If a communication error occurs, such as the status does not return even if the command is sent multiple times, it is determined that there is a problem with the communication system, the power feeding operation is stopped, and the display screen is displayed to notify the operator of the reason for the stop. Execute operations such as displaying on the screen. The above series of operations is performed for each power supply port (CH: channel).

  In this way, the load device is connected to the power supply port provided in the power supply device, and the communication device starts exchanging information on the load device power supply specification information in the relationship between the command and the status. At the time of information exchange, the load type connected to the power supply apparatus is confirmed from the model code based on information registered in the power supply apparatus in advance. When checking the model, the total capacity of the connected load devices is obtained from the load power consumption information in the load device power supply specification information, and when it is determined that the power supply capability of the power supply device is not exceeded, normal power supply is performed. When power is supplied to an actual load, depending on the type of the load device, it is assumed that power is supplied to the output side of the direct power supply device in the load device without having a power storage unit. In such a case, the load device (such as a printer) having an operating unit such as a motor has a load fluctuation, and the peak load of the load devices overlaps when connecting a plurality of load devices. The overcurrent protection function of the excess power generation unit and voltage waveform shaping unit (DC-DC converter) may cause power supply to the load device to stop and cause jamming or malfunction of the printer, or damage to the voltage waveform unit itself There is. Therefore, as shown in FIG. 13, during power feeding, current detectors 112-1 to 112-3 are provided for each channel, the load current that actually flows during charging is detected, and the peak between load devices is detected based on the detection result. When the loads overlap, the load device having the largest load capacity is stopped, and the power supply operation is sequentially stopped until the power supply device is within the power supply capability. Thereafter, when a power supply end status signal is transmitted from the load device, power supply to the next load device is started. By doing so, it is possible to supply power so that the peak load during charging of the load device does not overlap, and it can be managed so as not to exceed the charging capacity of the power supply device at all times, preventing damage to the device due to overload Can do.

  Further, when the power supply is stopped, as shown in FIGS. 11 and 12, the power supply ON / OFF display lamp of the channel where the power supply is stopped is set to GREEN display (charging OFF display) to the operator and charging is performed. Channel No. indicating that power supply is stopped on the power supply device display screen. And a display to inform that it is in a charge waiting state.

  Furthermore, if there is no load information in the system storage unit (hard disk 116 in the present embodiment) provided in the power supply device of the present invention as shown in FIG. 13, it is determined that the load device specification is unknown, From the viewpoint of protecting the power supply device, the power supply stop state is maintained, the power supply ON / OFF display lamp of the channel is set to GREEN display (charge OFF display), indicating that charging is not performed, and the specifications of the load device are unknown. In order to notify the operator of this, the channel number, the reason for stopping, and the information update request for stopping power feeding are displayed on a display screen provided in the power feeding apparatus. At this time, power supply to other load devices is continued as it is.

  Further, at this time, when the operator himself / herself clearly grasps the connected load device power supply specifications based on the product catalog and specifications, it is provided on the surface of the power supply device 100 as shown in FIGS. Using the arrow key and the confirmation key for moving the display unit 107 and the cursor, the operation is advanced with the arrow key and the confirmation key in accordance with the interactive instruction of the screen display of the display unit 107, and the power feeding use of the load device is input to the power feeding device. A function for recognizing the load device and enabling power supply from the power supply device is provided. By doing so, when a load device whose load device power supply specification information is unknown is connected, it is possible to further enhance versatility as the power supply device of the present invention by providing a function capable of manually supplying power.

  When the operator inputs the load specifications manually and uses it, confirm that the current flowing through the actual load is within the output range of the power feeder after starting power generation, or insert a fuse in the output terminal of the load device. Or, by using the overcurrent protection function of the DC-DC converter, it is possible to protect from overcurrent as in normal use.

  Further, as described above, when a plurality of load devices are connected to the power supply device of the present invention, the load device power supply specification information is connected to the power supply device in relation to the command and status by the communication means of the load device. When the total load consumption capacity is determined and it is determined that the power supply capacity of the power supply apparatus is not exceeded, normal power supply is started. However, depending on the type of load, even if one unit is close to the supply capacity limit of the power supply device, or if multiple units are connected, the total capacity of the load will exceed the supply capacity of the power supply device, and the use as it is becomes overloaded and the power generation unit Or the voltage waveform shaping section (DC-DC converter) 's overcurrent protection function may cause the power supply to the load device to stop, causing a jam or malfunction of the printer, or damage to the voltage waveform section itself. Therefore, it is necessary to clarify the power supply order in order to protect the power supply apparatus under such usage conditions. Therefore, in order to manage the power supply order, a priority order storage unit 115 using an SRAM 115-1 is provided as shown in FIG. In the power supply apparatus, as shown in FIG. 11, the load apparatus 200 is connected through a connection confirmation signal in the communication means by connecting a cable provided with a power supply plug to the power supply port 110 including the power supply means and the communication means. Then, the load device power supply specification information is recognized on the power supply device 100 side through the communication power supply confirmation operation and the communication between the power supply device and the load device (relationship between command and status), and the load device power supply specification information. The power supply voltage value that is the power supply specification is determined based on the above, and it is confirmed that the power supply specification is satisfied.

  Thereafter, the control unit 104 transmits a management signal for the confirmed channel to the priority storage unit 115 and stores it in the priority storage unit 115 in order to manage the power supply priority to the load device. Next, when the load device 200 is connected to a power supply port other than the channel whose load connection has been confirmed in the above, communication (relationship between command and status) is performed between the power supply device 100 and the load device 200, and the load The device power supply specification information is recognized on the power supply device 100 side, the power supply voltage value which is the power supply specification is determined based on the load device power supply specification information, the total load capacity with the previously connected load device is calculated, and the power supply device Check that it is within the power supply specification value. Thereafter, like the previously connected channel, the control unit 104 transmits a management signal for the confirmed channel to the priority storage unit 115 and stores it in the priority storage unit 115. At this time, what is stored in the priority storage unit 115 is stored from the earliest order of the channel to which the load device is connected, and the charging operation is also performed according to the stored channel order. The above confirmation operation is performed every time the load device is connected to the power feeding device.

  Here, if it is determined that the load device is additionally connected and the result of calculating the total load capacity exceeds the power supply specification value, the total load capacity before adding this load device is within the power supply specification value at the same time. A power feeding operation is performed, and a standby state is entered until the charging operation of the channel to which another load device is connected is completed. Thereafter, when the load device being charged receives the charge end status signal from the transmission, the control unit 104 ends the charging operation. At that time, the control unit 104 transmits an instruction command to the priority order storage unit 115 so as to clear the stored channel order signal during charging, and the order signal of the charge completion load device is obtained from the priority order storage unit 115. Cleared.

  The clear operation of the channel order signal from the priority storage unit 115 is stopped even when the connection confirmation signal changes from L to H when the load device 200 is removed from the power supply port 110 during the charging operation. The CPU transmits a channel order signal clear instruction command to execute the clear operation. In the present embodiment, the clearing operation is performed by the connection confirmation signal in the communication means, but the same can be confirmed by the monitoring result of the current detection circuit flowing in the sensor or each load device in each channel.

  When one charging operation is completed, the total load capacity that is currently connected is calculated again, including the load devices that have been in the waiting state, and confirmation work that is within the power supply specification value of the power supply device is started. To do. When the confirmation result is within the power supply specification value of the power supply apparatus, the simultaneous power supply operation is performed. Even at this time, if the confirmation result exceeds the power supply specification value of the power supply device, the standby state is entered until the charging operation of another load device is completed.

  Next, the normal charging process of the priority order storage unit will be described with reference to FIG. 14 showing the process flow. In the present invention, when the load device and the power supply device are connected, it is possible to recognize that the load is connected through the communication means and to have a function of calculating the total power consumption of the load device. As described above. First, the configuration for processing the priority in the priority storage unit of the power supply apparatus has a charging end BOX and a BOX with priorities 1 to 3. When a load is first connected to CH0, a charging process is performed. When the information is stored in the Priority 1 BOX and it is confirmed that the total power consumption does not exceed the power supply capability of the power supply apparatus, the Priority 1 BOX of the charging process sends a signal to execute the charging process. Next, when a load is connected to CH1, information is stored in the BOX with priority 2 in the charging process. At this time, the total power consumption with the previously connected CH0 is obtained and the total power consumption is the power supply capability of the power supply device. If it is confirmed that it does not exceed, the BOX with the priority 2 of the charging process sends a signal to execute the charging process. Further, when a load is connected to CH2, information is stored in the BOX of charge processing priority 3, and at this time, the total power consumption of CH0 and CH1 previously connected is obtained and the total power consumption is fed by the power feeding device. When it is confirmed that the capacity has not been exceeded, the BOX with the priority 3 of the charging process sends a signal to execute the charging process. Here, if the total power consumption exceeds the power supply capacity of the power supply device, the charging is awaited. A signal is transmitted so as to execute the charging process. When it is confirmed that the charging of CH0 or CH1 is completed, the signal is transmitted so as to execute the charging process. The above is the outline of the normal charging process flow.

  As described above, since the data for determining the charging order is stored in the priority order storage unit, if the main switch is turned off for the convenience of the operator, the main switch is turned off by mistake, for example. If the main switch is turned off to move a stationary type power supply device, or if the main switch is turned off during load connection, the RAM unit of the priority storage unit in the power supply device is powered on. When the power switch is turned on again, the load device ID confirmation of the load device connected to each channel is compared with the ID stored in the RAM unit, and the load stored in the RAM unit is determined to be the same. Information, power generation information (charging time information, etc.) and charging priority information can be continuously charged for smooth power generation operation As even it loses power because it allows generation information and load information including the priority signal does not clear the memory contents even when the power supply falls to adopt an SRAM not cleared (nonvolatile memory element).

  In addition, there is no power generation system that can maintain a constant power generation capacity at all times, especially when the fuel cell or solar cell is used as a generator, and the output decreases with time and weather. There are many cases. If an attempt is made to extract a current exceeding the power generation capacity in a state where the power generation capacity has been reduced (= when the number of connected load devices is large), there is a risk that the load on the power generation section will increase and damage the power generation section. In particular, it is known that when continuous power generation is performed, such as when a fuel cell is used in the power generation unit, the output decreases with time, and the power generation capacity of solar cells is influenced by the weather. well known. In this way, if the output is reduced and an attempt is made to extract a current exceeding the power generation capacity, the burden on the cell becomes large, such as in the case of a fuel cell, and the cell itself is damaged.

  Therefore, as shown in FIG. 13, by providing the power generation voltage detection means 114, the power generation capability of the power generation unit is always monitored by the control unit 104, the power generation capability of the power generation unit is grasped, and the load device 200 is connected to the power supply apparatus 100. , And after determining the power supply voltage value based on the load device power supply specification information, when confirming that the total power consumption of the connected load device 200 satisfies the power supply specification, the power generation unit is included in the power supply device in advance. The maximum power supply specification value is determined for the power generation capacity of 101, the power supply specification value is changed based on the result of power generation capacity monitoring by the power generation voltage detecting means 114, and the number of load devices to be simultaneously supplied is determined. By doing so, it is no longer possible to take out more current than the power generation capacity, and damage to the power generation unit can be prevented. In addition, it is determined that the power generation unit 101 has generated power abnormally, such as when the power generation capacity is rapidly increased (when the amount of change within a specified time is large) as a result of detection by the power generation voltage detection unit 114, and power generation error is generated The power supply to the load device 200 is continued until the lower limit specified value (= power supply limit value) of the power storage unit is reached. Thereafter, the power feeding operation to the load device 200 is stopped, and the operator is informed via the display unit 107 that the power generation unit has stopped due to an error.

  By the way, when the operator wants to charge or use the load device early in actual use in the market, depending on the type of load device to be connected, the connection order management method as described above may be delayed until charging. there is a possibility. Therefore, a function is provided for the operator to intentionally increase the charging order.

  First, when the “power supply ON / OFF indicator lamp and priority change switch” is pressed to intentionally increase the charge priority, the charging process is performed in the order in which the load device is connected to the power supply port until then. The priority signal determined by the priority storage unit 115 in the power supply apparatus is rewritten so that the priority of the channel on which the “priority change switch” is pressed is first, and the priority is the highest. As soon as the “Power supply ON / OFF display lamp and priority change switch” is pressed, the output of all channels is stopped, the total load capacity of all the load devices connected to the power supply device is calculated, and the power supply device is fed. Check that it is within the specification value. When the confirmation result is within the power supply specification value of the power supply apparatus, the simultaneous power supply operation is performed. Even at this time, if the confirmation result exceeds the power supply specification value of the power supply apparatus, the one with the lowest power supply priority at this time is in a waiting state. Furthermore, if the total load capacity of the load device exceeds the power supply specification value even at this time, the one with the second lowest power supply priority at this time is in a waiting state. The confirmation operation described above is continued until the power supply specification value is within the power supply apparatus. After that, when it is confirmed that the total load capacity is within the power supply specification value, the load devices connected to the power supply apparatus are simultaneously started to supply power when the total load capacity is within the power supply specification value. In this embodiment, the output of the power supply device is stopped at the moment when the “power supply ON / OFF display lamp and priority change switch” is pressed, and the operation for confirming that it is within the power supply specification value of the power supply device is performed. However, at the moment when the “power supply ON / OFF display lamp and priority change switch” is pressed, the counter value of the charge management timer 117 shown in FIG. 5 minutes), wait until the charging operation for “the channel with only a short remaining charging time” is completed, and then perform the charging operation for the channel for which the “power supply ON / OFF display lamp and priority change switch” is pressed. You may go.

Further, processing when the priority order control switch of the priority order storage unit is pressed will be described with reference to FIG. 15 schematically showing the processing flow.
In the present invention, when the load device and the power supply device are connected, it is possible to recognize that the load is connected through the communication means and to have a function of calculating the total power consumption of the load device. Just as you did. First, the configuration for processing the priority in the priority storage unit of the power supply apparatus has a charging end BOX and a BOX with priorities 1 to 3. When a load is first connected to CH0, a charging process is performed. When the information is stored in the Priority 1 BOX and it is confirmed that the total power consumption does not exceed the power supply capability of the power supply apparatus, the Priority 1 BOX of the charging process sends a signal to execute the charging process. Next, when a load is connected to CH1, information is stored in the BOX with priority 2 in the charging process. At this time, the total power consumption with the previously connected CH0 is obtained and the total power consumption is the power supply capability of the power supply device. If it is confirmed that it does not exceed, the BOX with the priority 2 of the charging process sends a signal to execute the charging process. Further, when a load is connected to CH2, information is stored in the BOX of charge processing priority 3, and at this time, the total power consumption of CH0 and CH1 previously connected is obtained and the total power consumption is fed by the power feeding device. When it is confirmed that the capacity has not been exceeded, the BOX with the priority 3 of the charging process sends a signal to execute the charging process, but if the total power consumption exceeds the power supply capacity of the power supply device, it waits for charging. A signal is transmitted so as to be executed, and when the completion of charging of CH0 or CH1 is confirmed, the signal is transmitted so as to execute the charging process. The above is the outline of the normal charging process flow.

  Next, as shown in FIG. 15, when the priority control switch of CH1 is pressed, the CPU pushes CH1 to the highest priority position, replaces it with CH0, which has the highest priority, and changes the priority 2 position. Move to. Thereafter, the total power consumption of CH1 and CH0 is obtained, and when it is confirmed that the total power consumption does not exceed the power supply capability of the power supply apparatus, the Priority 2 and Priority 1 BOX signals are charged to execute the charge process. Here, if the total power consumption exceeds the power supply capability of the power supply device, after CH1 charging processing is executed, a signal is sent to CH0 to wait for charging, and CH1 charging ends. If it is confirmed, a signal is sent to execute the charging process. If it is confirmed that the total power consumption of CH0 and CH1 does not exceed the power supply capability of the power supply device if CH2 is connected at this time, all of CH0 to CH2 perform the charging process. Send a signal. However, if the total power consumption exceeds the power supply capability of the power supply device, CH2 sends a signal so as to enter a charge waiting state because the next charging operation is performed. After that, when it is confirmed that the charging of CH0 or CH1 is completed and it is confirmed that the total power consumption does not exceed the power supply capability of the power supply apparatus, a signal is transmitted so as to execute the charging process. The above operation executes the charging operation based on the same series of determinations regardless of which of the priority control switches CH0 to CH2.

  In addition, this invention is not limited to the said embodiment, It cannot be overemphasized that various deformation | transformation and substitution are possible if it is description in a claim.

It is the schematic which shows the whole system of the electric power feeding system of this invention. It is the schematic which shows a mode at the time of using the electric power feeder of this invention. It is a block diagram which shows the system configuration | structure of the electric power feeding system of this invention. It is a perspective view which shows the structure of a connector. It is the schematic which shows the outline of the exchange of communication in the electric power feeding operation | movement by the electric power feeder of this invention. It is a time chart which shows the exchange of the signal in the electric power feeding operation | movement by the electric power feeder of this invention. It is a block diagram which shows an example using the two-way communication means of a radio | wireless form. It is a flowchart which shows the electric power feeding operation | movement in the electric power feeding system of this invention. It is a perspective view which shows the structure of the electric power feeder of this invention. It is a block diagram which shows another system configuration | structure of the electric power feeding system of this invention. It is a perspective view which shows another structure of the electric power feeder of this invention. It is a perspective view which shows another structure of the electric power feeder of this invention. It is a block diagram which shows another structure of the electric power feeder of this invention. It is a figure which shows typically the normal charge processing flow of a priority order memory | storage part. It is a figure which shows typically the processing flow when the priority order control switch of a priority order memory | storage part is pushed.

Explanation of symbols

100; Power supply device, 101; Power generation unit, 102, 202; Power storage unit,
103, 103-1 to 103-3; voltage waveform shaping unit,
104, 203; control unit, 105; I / F unit,
106; Communication power ON / OFF switch 107; Display unit
108; LAN cable connector, 109; SD card port,
110; feeding port, 111; open / close solar panel,
112-1 to 112-3; current detection unit 113; power generation control unit;
114; generated voltage detection means; 115; priority storage unit;
116; hard disk; 117; charge management timer;
200; load device; 201; power supply unit; 300; cable;
400; communication path, 500; SD card.

Claims (19)

A power generation unit that generates electric power, a power storage unit that stores electric power generated by the power generation unit, a waveform shaping and a voltage waveform shaping unit that varies a voltage value in an output voltage to the load device, and the voltage waveform shaping unit is turned on In a power supply apparatus having a control unit that controls each part while controlling / OFF,
Connection confirmation means for confirming connection between the power supply device and the load device, load device power supply specification information indicating a power supply specification of the load device between the power supply device and the load device , and Two-way communication means for transmitting and receiving information indicating the operating state of each device of the power supply device and the load device ;
Power supply means for supplying power to the load device based on the load device power supply specification information ,
After confirming that the power supply device and the load device are connected by the connection confirmation means, the voltage waveform shaping unit responds to the load device power supply specification information received via the bidirectional communication means. The waveform shaping and voltage value in the power supply voltage to the load device are varied, and the power supply is performed based on the information indicating the operating state of each device transmitted and received between the power supply device and the load device via the bidirectional communication means. A power supply apparatus that controls start or stop . The power feeding device according to claim 1, wherein the power generation unit includes a solar power generator or a fuel cell power generator . Before SL load device from the power supply device according to claim 1, wherein the starting power supply with a power supply request signal requesting the feed received through said bidirectional communication means to the load device. When the connection confirmation signal for confirming the connection between the power supply device and the load device is OFF by the connection confirmation means, or when the charge end signal from the load device is confirmed, the power supply from the power supply device is performed. The power feeding device according to claim 1 , wherein the power feeding device is stopped. The power feeding device according to claim 1 , wherein the power feeding unit includes at least a plurality of power feeding ports. When it is determined that the power supply capacity of the power supply device is exceeded based on the total consumption capacity of the load device recognized by the bidirectional communication means and the load current detection result during power supply when connected to the plurality of load devices, A power supply amount control means for controlling the total output power supply amount to be held within the power supply capability of the power supply device by sequentially stopping the power supply operation from the load device having the largest load capacity until it becomes within the power supply capability of the power supply device; 6. The power feeding apparatus according to claim 5, further comprising display means for displaying a status. When there is the load device for which the load information related to the load device is determined to be unknown among the plurality of load devices, only the power supply to the load device is stopped, and the power supply and the load device corresponding to the display unit are stopped. The power feeding device according to claim 5 , wherein the power feeding device is displayed. The power feeding device according to claim 5 , wherein power feeding to the plurality of load devices is enabled up to a power feeding capacity upper limit of the power feeding device based on load information related to the load device. 9. The apparatus according to claim 5 , further comprising: a connection detection unit that detects that the load device is connected to a power supply port of the power supply device; and a storage unit that stores a power supply priority order. Power supply device. The power feeding apparatus according to claim 9, further comprising a changing unit that changes the power feeding priority order. The power feeding apparatus according to claim 9, wherein the storage unit is a nonvolatile storage element. The power supply device according to any one of claims 1 to 11 , wherein a specification of a power supply port of the load device is connectable to the power supply device and is a unified specification.   The power supply apparatus according to claim 1, further comprising an information update function for the power supply apparatus. Feed unit according to any one of claims 1 to 13, characterized in that it comprises a forced stop means for stopping the power supply from the power feeding device. The power supply apparatus according to any one of claims 1 to 13 , characterized in that, after a specified time has passed in a state where the load device is not connected, the devices other than the connection confirmation unit are stopped. The power feeding device according to any one of claims 1 to 13 , further comprising means for enabling manual power feeding even when the load device power feeding specification information is unknown. The power feeding device according to any one of claims 1 to 16 , further comprising a power generation capacity varying unit that varies a power feeding capacity in accordance with a power generation capacity of the power generation section. The power feeding apparatus according to claim 1 , further comprising a power generation abnormality detection unit that detects power generation abnormality of the power generation unit. The electric power generated by the load device and the power generation unit that generates electric power is stored in the power storage unit, the waveform shaping and the voltage value in the output voltage to the load device are varied by the voltage waveform shaping unit, and the voltage waveform shaping by the control unit In a power supply system constructed to include a power supply device capable of controlling each part while controlling ON / OFF of the part,
Between the load device and the power supply device, load device power supply specification information indicating a power supply specification of the load device is transmitted / received via bidirectional communication means, and power is supplied to the load device based on the load device power supply specification information. The power supply is controlled to start or stop power supply based on information indicating an operating state of each device transmitted and received between the power supply device and the load device via the bidirectional communication unit. system.

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