JPWO2018029902A1 - Cradle device, electrical equipment and control method - Google Patents

Abstract

The cradle device is connected to a first port to which an external power system is connected, a second port to which a portable first capacitor is detachably connected, and a charger for a second capacitor of an electric load. A third port that outputs at least one of power from the power system and power from the first capacitor installed in the second port, a signal generation unit that generates a signal related to power that can be output from the third port, A transmission unit that transmits a signal to the load.

Description

  The present invention relates to a cradle device, an electric device, and a control method.

  Patent Document 1 discloses a conversion unit that converts system power supplied from a commercial distribution network into DC power, a battery that stores DC power supplied from the conversion unit, and system power and battery via the conversion unit. In response to a charging request of a vehicle connected to the combining unit via the charging cable, the combining unit configured to combine the power charged in the battery, and three switches provided between the conversion unit, the battery, and the combining unit. A vehicle charging device for switching the switch is described. The first switch provided between the combining unit and the converting unit is turned on when supplying grid power to the vehicle. Moreover, the 2nd switch provided between the synthetic | combination part and the battery is conduct | electrically_connected when supplying electric power from a battery to a vehicle. The third switch provided between the converter and the battery is turned on when supplying system power to the battery. Therefore, when there is no request for charging the vehicle, the first switch and the second switch are cut off, and the third switch is turned on for charging the battery. On the other hand, when there is a request for charging the vehicle, the first switch and the second switch are turned on and the third switch is turned off if the charging power value of the vehicle is equal to or greater than the threshold. If the charging power value of the vehicle is lower than the threshold value, the first switch is turned on and the second switch is turned off.

Japanese Unexamined Patent Publication No. 2012-125095 Japanese Unexamined Patent Publication No. 2013-207823

  In the vehicle charging device of Patent Document 1 described above, when there is a vehicle charging request, if the charging power value that is information indicating the charging state of the battery of the vehicle sent from the vehicle is equal to or greater than a threshold value, The power combined with the system power is supplied to the vehicle, and if the charging power value is less than the threshold value, only the system power is supplied to the vehicle. Thus, the magnitude of the power supplied to the vehicle is determined based only on information from the vehicle. However, even if there is a surplus in the combined power of the grid power and the power charged in the battery, the power supplied to the vehicle is bound by the information from the vehicle, that is, the charging power value, so that the power that can be supplied by the vehicle charging device May not be fully utilized.

  An object of the present invention is to provide a cradle device, an electric device, and a control method capable of supplying maximum electric power using electric power from an external electric power system and electric power from a portable battery to an electric load.

In order to achieve the above object, the invention described in the first aspect is
A first port to which an external power system is connected (for example, a first port 101 in an embodiment described later);
A second port (for example, a second port 102 in an embodiment described later) to which a portable first battery (for example, a sub-battery 300 in an embodiment described later) is detachably connected;
To a charger (for example, a charger 205 in an embodiment to be described later) of a second battery (for example, a main battery 204 in an embodiment to be described later) of an electric load (for example, an electric vehicle 200 in an embodiment to be described later). A third port that is connected and outputs at least one of the electric power from the external electric power system and the electric power from the first capacitor attached to the second port (for example, the third port 103 in the embodiment described later). When,
A detection unit (for example, detection unit 105 in an embodiment described later) for detecting the state of the first battery mounted in the second port;
A signal generation unit (for example, a control unit 109 and a signal generation unit 107 in an embodiment described later) that generates a signal indicating a first power-related value related to power that can be output from the third port;
A transmission unit (for example, the communication unit 108 in an embodiment described later) that transmits the signal to the electrical load,
The first capacitor has a smaller capacity than the second capacitor,
The signal generation unit is a cradle device that changes the signal based on a state of the dischargeable first capacitor when the dischargeable first capacitor is attached to the second port.

The invention according to the second aspect is the invention according to the first aspect,
The state of the first capacitor that can be discharged is electric power that can be output by the first capacitor that can be discharged.

The invention according to the third aspect is the invention according to the second aspect,
The detection unit detects a state of charge of the first battery that can be discharged,
The electric power that can be output from the first battery that can be discharged is derived from the state of charge.

The invention according to the fourth aspect is the invention according to any one of the first to third aspects,
A plurality of the first capacitors can be individually attached to and detached from the second port,
The detection unit detects a state for each of the first capacitors attached to the second port,
The signal generation unit changes the signal based on the sum of the states of the plurality of first dischargeable capacitors when the plurality of first dischargeable capacitors are attached to the second port. .

The invention according to the fifth aspect is the invention according to any one of the first to fourth aspects,
The signal generation unit initializes the signal generation process when the first capacitor is attached to or detached from the second port.

The invention according to the sixth aspect is the invention according to any one of the first to fifth aspects,
A fourth port connected to the third port and outputting AC power (for example, a fourth port 104 in an embodiment described later);
When the signal generator is equipped with the dischargeable first capacitor in the second port and AC power is output from the fourth port, the state of the dischargeable first capacitor and the The signal is changed based on the AC power output from the fourth port.

The invention according to the seventh aspect is
A first port to which an external power system is connected (for example, a first port 101 in an embodiment described later);
A second port (for example, a second port 102 in an embodiment described later) to which a portable first battery (for example, a sub-battery 300 in an embodiment described later) is detachably connected;
A third port for outputting at least one of the electric power from the external electric power system and the electric power from the first capacitor attached to the second port (for example, the third port 103 in an embodiment described later);
A detection unit (for example, detection unit 105 in an embodiment described later) for detecting the state of the first battery mounted in the second port;
A signal indicating a first power related value related to power that can be output from the third port based on a state of the first capacitor that can be discharged when the first capacitor that can be discharged is attached to the second port. A signal generation unit (for example, a control unit 109 and a signal generation unit 107 in an embodiment described later),
An electrical device connected to the third port of the cradle device including a transmission unit (for example, a communication unit 108 in an embodiment described later) that transmits the signal,
A charger (for example, a charger in an embodiment to be described later) of a second battery (for example, a main battery 204 in an embodiment to be described later) that is a power source of the electric device (for example, an electric vehicle 200 in an embodiment to be described later). 205)
A receiving unit that receives the signal transmitted from the cradle device (for example, the communication unit 206 in an embodiment described later);
A control unit that controls the charger based on the first power-related value indicated by the signal and the second power-related value related to the maximum power that the charger can operate (for example, the ECU 207 in an embodiment described later). And comprising.

The invention according to the eighth aspect is the invention according to the seventh aspect,
When the second power-related value is greater than the first power-related value, the control unit outputs power from the external power system corresponding to the first power-related value and the dischargeable first capacitor. The charger is controlled using the total possible power as an input from the cradle device.

The invention according to the ninth aspect is the invention according to the seventh aspect or the eighth aspect,
When the second power-related value is greater than the first power-related value, the control unit gradually adds power from the first capacitor that can be discharged to power from the external power system, and finally Controls the charger with the sum of the power from the external power system corresponding to the first power-related value and the power that can be output from the dischargeable first battery as an input from the cradle device. .

The invention according to the tenth aspect is the invention according to any one of the seventh to ninth aspects,
The first capacitor is detachable from the electrical device, and the first capacitor mounted on the electrical device is used as a power source for the electrical device.

The invention according to the eleventh aspect is
A first port to which an external power system is connected (for example, a first port 101 in an embodiment described later);
A second port (for example, a second port 102 in an embodiment described later) to which a portable first battery (for example, a sub-battery 300 in an embodiment described later) is detachably connected;
To a charger (for example, a charger 205 in an embodiment to be described later) of a second battery (for example, a main battery 204 in an embodiment to be described later) of an electric load (for example, an electric vehicle 200 in an embodiment to be described later). A third port that is connected and outputs at least one of the electric power from the external electric power system and the electric power from the first capacitor attached to the second port (for example, the third port 103 in the embodiment described later). And comprising
The first capacitor is a control method performed by a cradle device having a smaller capacity than the second capacitor,
Detecting the state of the first battery mounted in the second port;
A signal indicating a first power related value related to power that can be output from the third port based on a state of the first capacitor that can be discharged when the first capacitor that can be discharged is attached to the second port. Produces
A control method for transmitting the signal to the electrical load.

  According to the first aspect and the eleventh aspect of the invention, in a state where the first dischargeable capacitor is mounted on the second port, a signal corresponding to the state of the first dischargeable capacitor is transmitted to the electric load. The In this way, the charger of the electrical load is notified of the power-related value supplied from the cradle device, so that the maximum power using both the power from the external power system and the power from the first dischargeable capacitor is used. Limited power can be supplied to the charger.

  According to the second aspect of the invention, since the signal is changed based on the electric power that can be output from the first battery that can be discharged, the electric load can provide accurate information according to the electric power that can be output from the first battery. Can be acquired by signal.

  According to the third aspect of the invention, since the electric power that can be output by the first electric storage device is derived from the charge state of the first electric storage device that can be discharged, the electric load depends on the electric power that can be output by the first electric storage device. Accurate information can be obtained by signals.

  According to the fourth aspect of the invention, even if a plurality of dischargeable first capacitors are mounted on the second port, a signal corresponding to the sum of the states of the capacitors is transmitted to the electric load. For this reason, the maximum power using both the power from the external power system and each power from the plurality of first dischargeable capacitors can be supplied to the charger of the electric load.

  According to the fifth aspect of the invention, the fluctuation of the electric power supplied from the cradle device caused by the detachment of the first capacitor is large, and the influence of the fluctuation on the charger of the electric load is large. By initializing the signal generation process, the influence on the external power system and the charger can be suppressed.

  According to the sixth aspect of the invention, since the power supply to the charger of the electric load and the power supply to the other electric loads connected to the fourth port can be performed simultaneously, the convenience of the cradle device is improved. improves.

  According to the seventh aspect of the invention, based on the first power related value related to the power that can be output from the third port and the second power related value related to the maximum power that the charger of the electric load can operate, Control the charger. For this reason, the charger of the electric load can receive the largest power within a range not exceeding the maximum power at which the charger can operate.

  According to the eighth aspect of the invention, the battery charger is a pseudo-rapid to the second battery of the electric load by the electric power larger than the electric power from the external electric power system, which is the maximum electric power that can be supplied by the cradle device. Charging can be realized.

  According to the ninth aspect of the invention, the charger is controlled so as to gradually change the set value for the charger in the case where the pseudo quick charge for the second capacitor of the electric load can be realized. It is possible to reduce the influence on the external power system and the charger due to the rapid fluctuation of the power supplied from the cradle device that is generated when the first capacitor that can be discharged to the two ports is newly installed.

  According to the tenth aspect of the invention, the first battery can be used as a power source for the electric load by being attached to the electric load. As described above, the first capacitor is used not only as a power supply source for charging the second capacitor of the electric load but also as a power source of the electric load, so that the frequency of use is high.

1 is a block diagram illustrating a schematic configuration of a cradle device according to an embodiment of the present invention and an electric vehicle connected to the cradle device. It is a block diagram which shows schematic structure of the electric vehicle connected to the cradle apparatus of another embodiment which concerns on this invention, and a cradle apparatus. It is a flowchart which shows the process in a cradle apparatus at the time of charging the main battery of an electric vehicle via a cradle apparatus. It is a figure which shows that the process of a cradle apparatus is initialized by removal | desorption of a sub battery. It is a flowchart which shows the process in the electric vehicle at the time of ECU controlling a charger.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of a cradle device according to an embodiment of the present invention and an electric vehicle connected to the cradle device. As shown in FIG. 1, when charging a main battery (BATTm) 204 of an electric vehicle 200 provided with an electric motor (MOT) 201 as a drive source, a charger 205 of the electric vehicle 200 is connected to a cradle device 100 via a cable 113. Connected to. The cradle device 100 shown in FIG. 1 is in a state in which a plug 111 is inserted into an outlet (not shown) connected to an external power system such as a commercial power source, and is a sub-battery (removable from the electric vehicle 200). BATTs) 300 is installed. The sub battery 300 is a portable secondary battery having a smaller capacity than the main battery 204.

  Hereinafter, the configuration and operation of the cradle apparatus 100 will be described.

  The cradle device 100 includes a first port 101, a second port 102, a third port 103, a fourth port 104, a detection unit 105, a power combining unit 106, a signal generation unit 107, a communication unit 108, And a control unit 109.

  The first port 101 is a port connected to an external power system (hereinafter simply referred to as “power system”) via the plug 111 and inputs power obtained from the power system to the power combining unit 106. .

  The second port 102 is a port for mounting the sub battery 300, and is connected to the power combining unit 106. In the example shown in FIG. 1, three second ports 102 are provided in the cradle device 100, and the sub-battery 300 can be individually attached to and detached from each second port 102.

  The third port 103 is a port that outputs electric power via the electric power combining unit 106 that the cradle device 100 supplies to the electric vehicle 200, and is connected to the charger 205 of the electric vehicle 200 via the cable 113.

  The fourth port 104 is a port that is provided on the output side of the power combiner 106 and outputs power from the power system. The fourth port 104 is connected to a plug of an electric device other than the electric vehicle 200.

  The detection unit 105 detects the state of charge of the sub battery 300 attached to the second port 102. The state of charge is an SOC (State of Charge) or a terminal voltage of the sub battery 300, and a current value discharged from the sub battery 300 varies depending on the SOC or the terminal voltage. When a plurality of sub-batteries 300 are attached to the second port 102, the detection unit 105 detects the respective charging states of the attached sub-batteries 300.

  The power combiner 106 combines the power from the power system via the first port 101 and the power from the dischargeable sub-battery 300 attached to the second port 102. As shown in FIG. 1, the power combiner 106 includes a power line 115 connecting the first port 101 and the third port 103, and the same number of power converters 110 as the second ports 102 provided in parallel to the power line 115. Have The power conversion unit 110 converts DC power from the dischargeable sub-battery 300 attached to the second port 102 into AC power. The power conversion unit 110 converts AC power from the power system into DC power. The electric power converted into direct current by the power conversion unit 110 is charged in the sub-battery 300 attached to the second port 102. The switching operation when the power conversion unit 110 performs power conversion is controlled by the control unit 109. The output of the power combiner 106 is connected to the third port 103 and the fourth port 104.

  Note that the internal configuration of the power combining unit 106 may be the configuration shown in FIG. In the configuration illustrated in FIG. 2, the power combining unit 106 includes a first power conversion unit 121 provided on the first port 101 side and a second power conversion unit 122 provided on the third port 103 side, The second port 102 is connected in parallel to the power line 123 between the first power converter 121 and the second power converter 122. The first power conversion unit 121 converts AC power from the power system into DC power. Further, the second power conversion unit 122 converts DC power into AC power. The switching operation when the first power conversion unit 121 and the second power conversion unit 122 perform power conversion is controlled by the control unit 109.

  The signal generation unit 107 is a PWM (Pulse Width Modulation) signal that indicates a maximum current value (hereinafter referred to as “first current value”) that can be output from the third port 103 in accordance with an instruction from the control unit 109. A pilot signal is generated. The first current value is the current value of the power system when the dischargeable sub-battery 300 is not attached to the second port 102, and at least one dischargeable sub-battery 300 is attached to the second port 102. In this case, the current value of the power system is a value obtained by adding each current value discharged by the sub-battery 300 that can be discharged. As described above, the duty ratio of the pilot signal generated by the signal generation unit 107 is changed based on the sum of the current values discharged by the dischargeable sub-battery 300 attached to the second port 102. When a plug such as an electric device is connected to the fourth port 104, the output from the fourth port 104 is calculated from the sum of the current values discharged by the dischargeable sub-battery 300 attached to the second port 102. The duty ratio of the pilot signal is changed on the basis of the value obtained by subtracting the current value.

  The communication unit 108 transmits the pilot signal generated by the signal generation unit 107 to the electric vehicle 200 via the cable 113 in a state where the charger 205 of the electric vehicle 200 is connected to the third port 103 via the cable 113. . Communication unit 108 transmits an initial signal when cradle device 100 is connected to charger 205 of electric vehicle 200 via cable 113, and receives a response signal from electric vehicle 200. The communication unit 108 may superimpose and transmit a signal to electricity that transmits power from the cradle device 100 using a power line communication (digital communication) technique.

  The control unit 109 instructs the signal generation unit 107 to generate a pilot signal when the cradle device 100 is connected to the charger 205 of the electric vehicle 200. In addition, the control unit 109 controls a switching operation when the power conversion unit 110 (or the first power conversion unit 121 and the second power conversion unit 122) included in the power combining unit 106 performs power conversion. Based on the state of charge of the sub-battery 300 attached to the second port 102 detected by the detection unit 105, the control unit 109 combines the power from the sub-battery 300 that has been determined to be dischargeable in order to combine the sub-battery that can be discharged. The power conversion unit 110 corresponding to 300 performs control so as to perform power conversion. As a result, in the power combiner 106, the power from the power system and the power from the dischargeable sub-battery 300 attached to the second port 102 are combined.

  FIG. 3 is a flowchart showing processing in the cradle device 100 when the main battery 204 of the electric vehicle 200 is charged via the cradle device 100. As shown in FIG. 3, when it is confirmed that the cradle device 100 is connected to the charger 205 of the electric vehicle 200 (YES in step S <b> 101), the detection unit 105 is attached to the second port 102. Each charging state of the sub-battery 300 is detected (step S103). The control unit 109 determines whether or not the dischargeable sub-battery 300 is attached from the detection result in step S103 (step S105). If the dischargeable sub-battery 300 is attached, the control unit 109 proceeds to step S107. If not, the process proceeds to step S109.

  In step S107, the control unit 109 sets a value obtained by adding each current value discharged from the dischargeable sub-battery 300 to the current value of the power system as the first current value. In step S109, the control unit 109 sets the current value of the power system to the first current value. The first current value is the maximum current value that can be output from the third port 103 of the cradle device 100, and is not necessarily the current value that is actually output from the cradle device 100. Next, the control unit 109 instructs the signal generation unit 107 to generate a pilot signal having a duty ratio corresponding to the first current value set in step S107 or step S109, and the signal generation unit 107 generates the pilot signal. (Step S111). Next, communication unit 108 transmits the pilot signal generated by signal generation unit 107 to electrically powered vehicle 200 (step S113).

  Note that the processing in the cradle apparatus 100 described above is initialized at any point in time when the sub-battery 300 is attached to or detached from the second port 102 as shown in FIG. Executed.

  Next, the configuration and operation of the electric vehicle 200 will be described.

  The electric vehicle 200 includes an electric motor (MOT) 201, a PDU (Power Drive Unit) 202, a VCU (Voltage Control Unit) 203, a main battery (BATTm) 204, a charger 205, a communication unit 206, an ECU ( Electronic Control Unit) 207.

  The electric motor 201 generates a driving force for the electric vehicle 200 to travel. The PDU 202 converts a DC voltage into an AC voltage and supplies a three-phase current to the electric motor 201. The VCU 203 is provided between the slot where the sub battery 300 is mounted in the electric vehicle 200 and the PDU 202, and performs voltage conversion of DC power output from the sub battery 300 mounted on the electric vehicle 200.

  The main battery 204 is a secondary battery that mainly supplies power to the electric motor 201, and outputs a high DC voltage such as 50 to 200V. Further, the main battery 204 is charged via the charger 205 with the electric power supplied from the cradle device 100.

  The charger 205 is connected in parallel with the main battery 204 and converts AC power supplied from the cradle device 100 via the cable 113 into DC power. The current input to the charger 205 via the cable 113 is a first current value (maximum current value that can be output from the third port 103 of the cradle device 100) indicated by the duty ratio of the pilot signal transmitted from the cradle device 100. Is equivalent to The voltage level or current level of DC power output from the charger 205 is controlled by the ECU 207.

  The communication unit 206 receives the pilot signal transmitted from the cradle device 100. The pilot signal received by the communication unit 206 is sent to the ECU 207.

  The ECU 207 is based on the first current value indicated by the duty ratio of the pilot signal received by the communication unit 206 and the maximum current value at which the charger 205 can operate (hereinafter referred to as “second current value”). 205 is controlled. That is, the ECU 207 performs control on the charger 205 according to the smaller one of the first current value and the second current value.

  FIG. 5 is a flowchart showing processing in electrically powered vehicle 200 when ECU 207 controls charger 205. As shown in FIG. 5, when the communication unit 206 of the electric vehicle 200 confirms reception of the pilot signal transmitted from the cradle device 100 (YES in step S201), the ECU 207 determines that the charger 205 is operable. A current value (second current value) is acquired (step S203). Next, the ECU 207 determines the magnitude relationship between the first current value (the maximum current value that can be output from the third port 103 of the cradle device 100) indicated by the duty ratio of the pilot signal and the second current value. If “value> first current value”, the process proceeds to step S207, and if “first current value ≧ second current value”, the process proceeds to step S209. In step S207, the ECU 207 determines the magnitude relationship between the first current value and the current value of the power system. If “first current value> current value of the power system”, the process proceeds to step S211. If ≧ first current value ”, the process proceeds to step S213.

  In steps S209 to S213, the ECU 207 sets a set current value for the charger 205. In step S209, the cradle device 100 can output the first current value, but since the first current value ≧ the second current value, the ECU 207 sets the set current value to the charger 205 to the second current value. To do. In step S211, the ECU 207 gradually sets the set current value for the charger 205 from the current value of the power system so as to finally become the first current value. In step S213, ECU 207 sets the set current value for charger 205 to the first current value. Finally, the ECU 207 controls the charger 205 so that a current corresponding to the set current value set in any of steps S209 to S213 is supplied from the cradle device 100 (step S215).

  As described above, according to the present embodiment, when the sub-battery 300 that can be discharged is attached to the second port 102, the current discharged from the sub-battery 300 derived from the charging state of the sub-battery 300 is discharged. A pilot signal is generated according to the value and transmitted to electric vehicle 200. Thus, since the charger 205 of the electric vehicle 200 is notified of the current value supplied from the cradle device 100, the maximum combined power from the external power system and power from the dischargeable sub-battery 300 is obtained. Limited power can be supplied to the charger 205.

  Even if a plurality of sub-batteries 300 that can be discharged are attached to second port 102, a pilot signal corresponding to the sum of the current values of the sub-batteries is transmitted to electric vehicle 200. For this reason, the charger 205 of the electric vehicle 200 can be supplied with the maximum power using both the power from the external power system and each power from the plurality of sub-batteries 300 that can be discharged.

  In electrically powered vehicle 200, based on the first current value related to the maximum current that can be output from third port 103 of cradle device 100 and the second current value related to the maximum current at which charger 205 of electrically powered vehicle 200 can operate. The charger 205 is controlled. For this reason, the charger 205 can receive the largest amount of power within a range that does not exceed the maximum current that the charger 205 can operate, and can realize pseudo rapid charging of the main battery 204 of the electric vehicle 200.

  Further, the charger 205 is controlled so that the set current value for the charger 205 when the pseudo rapid charging to the main battery 204 of the electric vehicle 200 can be realized is gradually changed. The influence on the external power system and the charger 205 due to a sudden change in the power supplied from the cradle device 100 that occurs when the sub-battery 300 that can be discharged to the battery 102 is newly installed can be reduced.

  Moreover, since the fluctuation of the electric power supplied from the cradle device 100 due to the detachment of the sub-battery 300 is large and the influence of the fluctuation on the charger 205 of the electric vehicle 200 is large, the pilot signal generation process is triggered by the detachment / desorption. , The influence on the external power system and the charger 205 can be suppressed.

  In addition, since the power supply to the charger 205 of the electric vehicle 200 and the power supply to the electrical equipment connected to the fourth port 104 can be performed simultaneously, the convenience of the cradle device 100 is improved.

  Further, the sub battery 300 can be used as a power source of the electric vehicle 200 by being attached to the electric vehicle 200. As described above, the sub battery 300 is used not only as a power supply source for charging the main battery 204 of the electric vehicle 200 but also as a power source of the electric vehicle 200, and thus the usage frequency thereof is high.

  Note that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like can be made as appropriate. For example, the cradle device 100 and the electric vehicle 200 may perform the same processing based on the power value instead of the first current value, the second current value, and other current values.

  This application is based on a Japanese patent application filed on August 8, 2016 (Japanese Patent Application No. 2016-155514), the contents of which are incorporated herein by reference.

100 Cradle device 101 1st port 102 2nd port 103 3rd port 104 4th port 105 Detector 106 Power combiner 107 Signal generator 108 Communication unit 109 Controller 110 Power converter 113 Cable 121 1st power converter 122 1st 2 Power conversion unit 200 Electric vehicle 201 Electric motor (MOT)
202 PDU
203 VCU
204 Main battery (BATTm)
205 Charger 206 Communication Unit 207 ECU
300 Sub-batteries (BATTs)

Claims (11)

A first port to which an external power system is connected;
A second port to which a portable first battery is detachably connected;
A third port connected to a charger of a second capacitor included in an electrical load and outputting at least one of the power from the external power system and the power from the first capacitor mounted on the second port;
A detection unit for detecting a state of the first battery mounted in the second port;
A signal generator that generates a signal indicating a first power-related value related to power that can be output from the third port;
A transmission unit for transmitting the signal to the electrical load,
The first capacitor has a smaller capacity than the second capacitor,
The signal generation unit is a cradle device that changes the signal based on a state of the dischargeable first capacitor when the dischargeable first capacitor is mounted on the second port. The cradle device according to claim 1,
The state of the first battery that can be discharged is a cradle device that is electric power that can be output from the first battery that can be discharged. The cradle device according to claim 2,
The detection unit detects a state of charge of the first battery that can be discharged,
The cradle device in which the electric power that can be output from the first battery that can be discharged is derived from the state of charge. The cradle device according to any one of claims 1 to 3,
A plurality of the first capacitors can be individually attached to and detached from the second port,
The detection unit detects a state for each of the first capacitors attached to the second port,
The signal generation unit changes the signal based on the sum of the states of the plurality of first dischargeable capacitors when the plurality of first dischargeable capacitors are attached to the second port. , Cradle equipment. The cradle device according to any one of claims 1 to 4,
The signal generation unit is a cradle device that initializes the signal generation processing when the first capacitor is detached from the second port. The cradle device according to any one of claims 1 to 5,
A fourth port connected to the third port and outputting AC power;
When the signal generator is equipped with the dischargeable first capacitor in the second port and AC power is output from the fourth port, the state of the dischargeable first capacitor and the A cradle device that changes the signal based on AC power output from a fourth port. A first port to which an external power system is connected;
A second port to which a portable first battery is detachably connected;
A third port for outputting at least one of power from the external power system and power from the first capacitor mounted on the second port;
A detection unit for detecting a state of the first battery mounted in the second port;
A signal indicating a first power related value related to power that can be output from the third port based on a state of the first capacitor that can be discharged when the first capacitor that can be discharged is attached to the second port. A signal generator for generating
An electrical device connected to the third port of a cradle device comprising: a transmission unit that transmits the signal;
A charger for a second battery that is a power source of the electrical device;
A receiving unit for receiving the signal transmitted from the cradle device;
An electrical apparatus comprising: a control unit that controls the charger based on the first power-related value indicated by the signal and a second power-related value related to the maximum power at which the charger can operate. The electric device according to claim 7,
When the second power-related value is greater than the first power-related value, the control unit outputs power from the external power system corresponding to the first power-related value and the dischargeable first capacitor. An electrical device that controls the charger using the total possible power as an input from the cradle device. The electrical device according to claim 7 or 8,
When the second power-related value is greater than the first power-related value, the control unit gradually adds power from the first capacitor that can be discharged to power from the external power system, and finally Controls the charger with the sum of the power from the external power system corresponding to the first power-related value and the power that can be output from the dischargeable first battery as an input from the cradle device. , Electrical equipment. The electric device according to any one of claims 7 to 9,
The first electrical storage device is detachable from the electrical device, and the first electrical storage device attached to the electrical device is used as a power source for the electrical device. A first port to which an external power system is connected;
A second port to which a portable first battery is detachably connected;
A third port connected to a charger of a second capacitor included in an electrical load and outputting at least one of power from the external power system and power from the first capacitor mounted on the second port; Prepared,
The first capacitor is a control method performed by a cradle device having a smaller capacity than the second capacitor,
Detecting the state of the first battery mounted in the second port;
A signal indicating a first power related value related to power that can be output from the third port based on a state of the first capacitor that can be discharged when the first capacitor that can be discharged is attached to the second port. Produces
A control method for transmitting the signal to the electrical load.

Images