TWI419435B - Electricity feeding device and electricity feeding system using the same - Google Patents

Description

Feed device and feed system using the same

The present invention generally relates to a feed device and a feed system using the same.

In the past, a battery charger for electric vehicles has been proposed (for example, see Japanese Patent Application Laid-Open No. 8-33121). This battery charger is configured to use an alternating current of a commercial alternating current power source that is fed to each home as power for charging. An AC/DC converter that converts commercial AC power to DC power can be placed at the end of the electric vehicle. When the connector of the charging cable at the battery charger end is connected to the connector of the electric vehicle end, commercial AC power is fed to the electric vehicle. Therefore, the fed commercial AC power source can be converted into a DC power source by an AC/DC converter, and then the battery of the electric vehicle is charged.

However, the battery charger described in the above document receives the supply of residential commercial AC power, and then the AC/DC converter converts the residential commercial AC power into a DC power supply to the battery of the electric vehicle, and then the battery is charged. As a result, conversion loss occurs at the end of the electric vehicle due to the AC/DC conversion. In addition, although the charging current may vary depending on the type of electric vehicle, the battery charger cannot correspond to the charging current.

It is an object of the present invention to provide a power feeding device that can prevent power conversion losses at the device side, and a power feeding system using the same.

The power feeding device of the present invention includes a feed connector that is connected to a battery-equipped device and receives a supply of DC power and feeds the desired DC power to the device. In addition, the feed device includes a feed information collection component, a control component, and a DC/DC converter. The feed information collection component obtains feed information related to the feed voltage and the feed current for battery charging from the device. The control component is configured to set the feed voltage and feed current fed to the device based on information acquired by the feed information collection component. The DC/DC converter feeds the feed voltage and feed current set by the control unit to the device.

In this configuration, it is possible to realize a feeding device using a DC power source that is fed to a power device in a house as a charging power source. Thus, there is no need to install a conventional AC/DC converter on the device side. Therefore, the power feeding device can prevent power conversion loss at the device side compared to the above-described conventional example. Furthermore, since the feed device can obtain feed information from the device, the feed device can feed DC power corresponding to the connected device.

In a specific embodiment, the device includes a charging circuit that charges the battery with a charging current corresponding to a charge enabling signal. The control component of the feed device is configured to output a charge enable signal to the device to control the charging current of the charging circuit.

In this configuration, the power feeding device can control the charging current of a connected device by the chargeable signal, and thereby prevent power interruption caused by the overcurrent.

A feeding system of the present invention comprises the feeding device, a DC power supply unit that feeds a DC current to the feeding device, and a transmitter that transmits the power feeding information of the DC power supply unit to the feeding device. The control component of the feeding device is configured to set the feeding voltage and the feeding current to be fed to the device based on the feeding information acquired by the feeding information collecting component and the feeding information of the DC power component transmitted from the transmitter. . The DC/DC converter feeds the feed voltage and feed current set by the control unit to the device.

In this configuration, the control component sets the power fed to the device based on the feed information transmitted by the device and the feed information of the DC power component transmitted from the transmitter, and thus the power fed to the device is never Will exceed the power supply of the DC power supply unit. In addition, the power that the feed system can feed to the device is the power that is closer to the power required by the device.

In a specific embodiment, the feed system further includes an AC power source component that feeds AC power to the feed device. The feeder is equipped with an AC/DC converter. The AC/DC converter converts the alternating current fed by the alternating current power supply unit into a direct current of the feed voltage and the feed current set by the control unit, and feeds the direct current to the device.

In this configuration, the feed device is provided with an AC/DC converter, and thereby the AC power fed by the AC power source assembly can be directly converted into DC power. Therefore, the feed system can reduce the conversion efficiency loss. In addition, the feeder includes an AC/DC converter and a DC/DC converter, which also provides a convenient feed system.

In a specific embodiment, the feed system further includes an AC power source component that feeds AC power to the feed device. The feeder is provided with a switching component that switches to the output of the AC power component or the output of the DC/DC converter. The feed information collection component acquires a selection signal from the device for selecting an output of the AC power component or an output of the DC/DC converter. The control component is configured to control the switching of the switching component based on the selection signal and to feed power to the device via the feeder when a selection signal is received from the feed information collection component.

In this configuration, the alternating current output from the alternating current power supply component or the direct current outputted by the direct current/direct current converter may be selected as the power fed to the device via the feeder due to the switching of the switching component. . Therefore, a convenient feeding system can be provided.

The feed system of the present invention includes a feed device, a DC power supply assembly that feeds DC power to the feed device, control device, and is configured to control the feed power of the DC power supply assembly. In addition, the feed system includes a solar energy generating device that feeds DC power to the DC power source assembly as a power source, a battery that stores excess power produced by the solar energy generating device, and an AC/DC converter. The control device is configured to determine the solar energy generating device, the battery and the communication based on the feeding information respectively transmitted by the power feeding state of the power feeding device, the solar energy generating device, the remaining power of the battery, and the power feeding state of the AC/DC converter. Feed ratio of the /DC converter.

In this configuration, the control device determines the solar energy generating device, the battery, and the feeding information based on the power generation state of the device, the power generation state of the solar energy generating device, the remaining power of the battery, and the power feeding state of the AC/DC converter. Feed ratio of AC/DC converters. Therefore, the feed system can feed available DC power to the device.

Hereinafter, a power feeding device and a power feeding system according to various embodiments of the present invention will be described with reference to the drawings. The feeder according to the present invention uses a DC power distribution system that distributes DC power to electrical devices in the home (i.e., the device is powered by DC power). The feeder uses the DC power distributed by the DC power distribution system as the charging power source, and then feeds the desired DC power to the electric vehicle, such as a battery car or a plug-in hybrid car. Then, the power feeding system according to the present invention includes a power feeding device, and the above-described DC power distribution system, the system including a DC power distribution board, an AC power distribution board, and a control device as described below.

(Specific embodiment 1)

1A is a view showing a frame format of a power feeding system according to a specific embodiment 1 of the present invention. The feeding system comprises a feeding device 1 positioned adjacent to the house H, a DC power distribution board (DC power supply unit) 2, which is located in the house H and feeds DC power to the feeding device 1 and controls the feeding of the DC power distribution board 2 The electric control device 3, and the control panel 4.

The power feeding device 1, as shown in FIG. 1A, includes a signal communication circuit 12, a power supply control circuit 11, a DC/DC converter 13, an interface circuit 14, and a feed connector 15. The signal communication circuit 12 is configured to communicate signals with an electric vehicle (device) C. The power control circuit 11 is configured to set the power fed to the electric vehicle C based on the information including the signal acquired by the signal communication circuit 12. The DC/DC converter 13 feeds the electric power set by the power supply control circuit 11 to the electric vehicle C. The interface circuit 14 is disposed between the control device 3 and the signal communication circuit 12 to mediate information communication between them. The feed connector 15 is connected to the cable originating from the power feeding device 1 and is connected to the connector 85 of the vehicle end of the electric vehicle C. In the present embodiment, the value of the DC voltage output from the DC/DC converter 13 (explained as follows) is set to 300 [volts] of direct current.

DC power distribution board 2, as shown in FIG. 1A, DC/DC converter 21, DC/DC converter 22, AC/DC converter 23, synergy control component 24, and complex DC circuit breaker 25 (Fig. Six DC circuit breakers are shown in 1A). The DC/DC converter 21 converts the direct current fed from the battery 7 into a predetermined direct current (for example, direct current 350 [volts]). The DC/DC converter 22 converts the direct current fed from the solar energy production device 6 into a predetermined direct current (for example, direct current 350 [volts]). The AC/DC converter 23 converts the alternating current fed from the commercial alternating current power source 100 into a predetermined direct current (for example, direct current 350 [volts]). The synergistic control component 24 cooperates with each of the converters 21 to 23 and feeds the load. The DC power fed from each of the converters 21 to 23 is fed to the power feeding device 1 via one of the synergistic control unit 24 and the DC circuit breaker 25.

The control device 3 is configured to control the direct current power output from the direct current distribution board 2, and determine the individual feed ratios of the above-described DC/DC converters 21, 22 and the AC/DC converter 23. The control device 3 has a function of transmitting the power feed information of the DC power distribution board 2 to the power feeding device 1. Then, the power feeding device 1 controls the DC/DC converter 13 so that the DC power does not exceed the power supplied from the DC power distribution board 2, and feeds the DC power to the electric vehicle C. In the present embodiment, the control device 3 is equivalent to a transmitter.

The control panel 4 includes, for example, a touch panel. The feed state of the DC power distribution board 2 can be confirmed on the screen. In addition, various modes can be determined by operating the touchpad.

The electric vehicle C to be fed includes a vehicle end connector 85 connected to the feed connector 15 of the power feeding device 1; a signal communication circuit 82; a battery 84; a charging circuit 83 for the rechargeable battery 84; The charge control circuit 81 is as shown in Figs. 1A and 1B. The signal communication circuit 82 is configured to communicate information with the signal communication circuit 12 of the power feeding device 1 (for example, as described below, the feed information relating to the feed voltage and the feed current for charging the battery 84). The battery 84 stores DC power fed by the power feeding device 1 (in the present embodiment, DC power 300 [volts]). The charge control circuit 81 controls the charge circuit 83 based on the aforementioned information input by the signal communication circuit 82.

In the feed system of the embodiment, the feed information related to the feed voltage and the feed current for charging the battery 84 is transmitted from the C end of the electric vehicle, and then the signal communication circuit 12 acquires the feed device 1 end. Feed information. Further, in the power feeding device 1, the feed information acquired by the signal communication circuit 12 is input to the power supply control circuit 11, and then the power supply control circuit 11 acquires the feed information and the power fed from the control device 3 to the DC power distribution board 2. Information and set the feed voltage and feed current to be fed to the electric vehicle C. The power supply control circuit 11 controls the DC/DC converter 13 to feed the desired DC power to the electric vehicle C based on the set feed voltage and the feed current. For example, if the C end of the electric vehicle requests DC power of 300 [volt] and 20 [amperes] to the power feeding device 1, and the power feeding amount of the DC power distribution board 2 is 3000 [volt-amperes], the power feeding device 1 feeds the direct current 300 [V] ] and 20 [A] to electric vehicle C. In the present embodiment, signal communication circuit 12 is equivalent to a feed information collection component, and power control circuit 11 is equivalent to a control component.

Further, the power feeding system of the present embodiment conforms to the SAE (Automatic Vehicle Engineers Association) (registered trademark) standard, and the power supply control circuit 11 of the power feeding device 1 outputs a SAE signal (charging enable signal) to charge the electric vehicle C. Control circuit 81. The SAE signal is a signal that limits the charging current when the battery 84 is charging. Then, the charging circuit 83 of the electric vehicle C limits the charging current to become a current value determined by the SAE signal.

Next, the operation of the power feeding system will be explained below. When the feed connector 15 of the power feeding device 1 is connected to the vehicle end connector 85 of the electric vehicle C, the feed information is transmitted from the electric vehicle C to the power feeding device 1, and in addition, the power feeding information of the direct current power distribution board 2 It will be transmitted from the control device 3 to the feed device 1. The power feeding device 1 receives the feed information and the power supply information of the DC power distribution board 2, and the feed information is compared with the power supply information in the power supply control circuit 11. Then, it is decided to feed the DC power (feed voltage and feed current) so as to be maintained within the power supply range of the DC power distribution board 2. Then, the power supply control circuit 11 controls the DC/DC converter 13 to feed the DC power that has determined the feed voltage and the feed current to the electric vehicle C. Then, the power supply control circuit 11 also transmits the SAE signal described above to the electric vehicle C.

On the other hand, in the electric vehicle C, after the above-mentioned direct current is fed and the SAE signal is transmitted, the charging control circuit 81 controls the charging circuit 83 to charge the battery 84 with a charging current which is less than or equal to that at the time of operation. The current value determined by the SAE signal. Then, when the charging is completed, the system notifies the user, for example, that charging is completed on the screen of the control panel 4. Then, when the user knows from the screen that the charging is completed, the feeder connector 15 can be removed from the vehicle end connector 85 to end a series of feeding operations.

As described above, in the present embodiment, the DC power source for distributing the power feeding device 1 in the house H can be realized as the charging power source. Therefore, it is not necessary to provide a conventional AC/DC converter at the C end of the electric vehicle. Therefore, the power feeding device 1 can prevent power conversion loss at the C end of the electric vehicle as compared with the aforementioned conventional example. Furthermore, since the device (in the present embodiment, the electric vehicle C) feed information is transmitted to the power feeding device 1, the power feeding device 1 can also feed the corresponding direct current power to the connected device.

Moreover, in the present embodiment, due to the SAE signal (charge enable signal) transmitted from the power feeding device 1, the power feeding device 1 can be set with the connected device (in the specific embodiment, the electric vehicle C) Corresponding charging current. In the device side, the charging current is limited to the set current value. Therefore, the power feeding device 1 can prevent power interruption due to overcurrent.

Further, the power feeding device 1 sets the feed fed to the electric vehicle C based on the feed information transmitted from the C end of the electric vehicle and the feed amount information of the DC power distribution board 2 transmitted from the control device 3. Therefore, the direct current will never exceed the power supplied by the DC power distribution board 2. Furthermore, the feed system can feed the DC power, which is closer to the power required by the electric vehicle C.

(Specific embodiment 2)

2A and 2B, the power feeding device and the power feeding system according to the specific embodiment 2 are explained as follows. The present embodiment 2 is different from the specific embodiment 1 in that the power feeding device 1 is configured with an AC/DC converter 16 to convert the alternating current fed by the alternating current power distribution board 5 into a predetermined direct current. Other features and functions are the same as those of the specific embodiment 1. Therefore, the same constituent elements are denoted by the same numerals, and the description thereof will be omitted.

The power feeding system of the present embodiment includes a power feeding device 1, a DC power distribution board 2, a control device 3, a control panel 4, and an AC power distribution board (AC power supply unit) located in the house H and feeding AC power to the power feeding device 1. ) 5.

As shown in FIG. 2A, the power feeding device 1 includes a power supply control circuit 11, a signal communication circuit 12, a DC/DC converter 13, an interface circuit 14, a feed connector 15, an AC/DC converter 16, and switching. (switching component) 17. The AC/DC converter 16 converts the AC power fed by the AC power distribution board 5 into DC power set by the power source control circuit 11, and feeds it to the electric vehicle C. The electric power to be fed to the electric vehicle C is switched to the output of the direct current/direct current converter 13 or the output of the alternating current/direct current converter 16 via the feeder L1. For example, the user indicates the content with the control panel 4, and the power control circuit 11 switches the switch 17 to the DC/DC converter 13 or the AC/DC converter 16 in accordance with the content.

As shown in FIG. 2A, the AC power distribution board 5 includes a main breaker 51 and a plurality of branch breakers 52 (ten breakers are shown in FIG. 2A). The alternating current is fed to the alternating current/direct current converter 16 of the power feeding device 1 via the main breaker 51 and the branch breaker 52. Further, in the present embodiment, the power feeding information of the DC and AC power distribution boards 2 and 5 is transmitted from the control device 3 to the power feeding device 1.

Here, in the above-described Embodiment 1, the AC/DC converter 23 is tied to the DC power distribution board 2, and the DC power converted by the AC/DC converter 23 is fed to the power feeding device 1. Then, the direct current fed via the AC/DC converter 23 is further converted by the DC/DC converter 13 of the power feeding device 1, thereby reducing the conversion efficiency. Therefore, in order to prevent the loss of conversion efficiency, in the present embodiment, the power feeding device 1 is provided with an AC/DC converter 16, and the power feeding system is configured such that the alternating current can be directly converted into the power feeding device 1. DC power.

Next, the operation of the feed system is explained below. First, the user instructs selection of the DC/DC converter 13 or the AC/DC converter 16 via the control panel 4. Then, the power supply control circuit 11 causes the switch 17 to switch to the converter 13 or 16 in accordance with the instruction content. Then, when the feed connector 15 of the power feeding device 1 is connected to the vehicle end connector 85 of the electric vehicle C, the feed information is transmitted from the electric vehicle C to the power feeding device 1. Further, the power feed information of the DC power distribution board 2 (or the AC power distribution board 5) is transmitted from the control device 3 to the power feeding device 1. When the power feeding device 1 receives the feed information and the power supply information of the DC power distribution board 2 (or the AC power distribution board 5), the power supply control circuit 11 of the power feeding unit 1 compares the power feeding information and the power feeding information. Then, the fed DC power (feed voltage and feed current) is determined so as to be maintained within the power supply range of the DC power distribution board 2 (or the AC power distribution board 5). Then, the power supply control circuit 11 controls the DC/DC converter 13 (or the AC/DC converter 16) to feed the DC power that has determined the feed voltage and the feed current to the electric vehicle C. Next, the power supply control circuit 11 also transmits the above SAE signal to the electric vehicle C.

On the other hand, in the electric vehicle C, the direct current is fed and the SAE signal is transmitted, and the charging control circuit 81 controls the charging circuit 83 to charge the battery 84 with the charging current, which is less than or equal to the SAE signal at the time of operation. The determined current value. When the charging is completed, the system notifies the user, for example, that the charging is completed on the screen of the control panel 4. Then, when the user knows from the screen that the charging is completed, the feeder connector 15 can be removed from the vehicle end connector 85, ending a series of feeding operations.

As explained above, in the present embodiment, the power feeding device 1 is provided with an AC/DC converter 16, and the AC power fed by the AC power distribution board 5 can be directly converted into DC power. Therefore, the system can prevent conversion performance loss. Further, since the system includes the AC/DC converter 16 and the DC/DC converter 13, a convenient power feeding system can be provided.

(Specific embodiment 3)

Referring to Figures 3A and 3B, the power feeding device and the power feeding system according to Embodiment 3 will be explained as follows. In the specific embodiments 1 and 2, the feeding means and the feeding system which feed only the direct current as the feeding of the electric vehicle C have been explained as above. In contrast, the power feeding device and the feeding system of the present embodiment are configured to switch to direct current or alternating current in accordance with the connected electric vehicles C1 to C3. Other features and functions are the same as those of the second embodiment. Therefore, the same constituent elements are denoted by the same numerals, and the description thereof will be omitted.

The power feeding system of the present embodiment includes a power feeding device 1, a DC power distribution board 2, a control device 3, a control panel 4, and an AC power distribution board 5.

The power feeding device 1 includes a power supply control circuit 11, a signal communication circuit 12, a DC/DC converter 13, an interface circuit 14, a feed connector 15, and a switch (switching unit) 17. Here, the switch 17 switches the electric power to be fed to the electric vehicles C1 to C3 to the output of the DC/DC converter 13 or the output of the AC power distribution board 5 via the feeder L1. Here, the power supply control circuit 11 causes the switch 17 to switch in accordance with the feed voltage (DC voltage or AC voltage) transmitted by the electric vehicles C1 to C3. For example, a selection signal having information that the feed voltage is direct current is included in the feed information transmitted from the electric vehicle C1 and the electric vehicle C3, the electric vehicle C1 is compatible with the direct current charging, and the electric vehicle C3 is connected with the alternating current/ DC charging is compatible. Therefore, the switch 17 is switched to the DC/DC converter 13 terminal. The selection signal having the information that the feed voltage is AC is included in the feed information transmitted from the electric vehicle C2, and the electric vehicle C2 is compatible with the AC charging. The switch 17 is switched to the end of the AC power distribution board 5.

Next, the operation of the power feeding system will be described below. In the following description, the DC charging electric vehicle C1 is used as an example to describe the system. When the feed connector 15 of the power feeding device 1 is connected to the vehicle end connector 85 of the electric vehicle C1, the feed information (feed voltage and feed current) is transmitted from the electric vehicle C1 to the feed device 1 Further, the power feeding information of the DC power distribution board 2 is transmitted from the control device 3 to the power feeding device 1. When the power feeding device 1 receives the feed information and the power supply information of the DC power distribution board 2, the power supply control circuit 11 of the power feeding device 1 compares the power feeding information and the power feeding information. Then, the feeder DC power (feed voltage and feed current) is determined so as to be maintained within the power supply range of the DC power distribution board 2. Then, the power supply control circuit 11 switches the switch 17 to the DC/DC converter 13 terminal, and controls the DC/DC converter 13 to feed the DC power that has determined the feed voltage and the feed current to the electric vehicle C1. Then, the power supply control circuit 11 also transmits the SAE signal described above to the electric vehicle C.

On the other hand, in the electric vehicle C1, DC power is fed and the SAE signal is transmitted, and the charging control circuit 81 controls the charging circuit 83 to charge the battery 84 with the charging current, and the current is less than or equal to the SAE signal in operation. Current value. When the charging is completed, the system notifies the user, for example, that the charging is completed on the screen of the control panel 4. Then, when the user knows from the screen that the charging is completed, the feeder connector 15 can be removed from the vehicle end connector 85, ending a series of feeding operations.

If the electric vehicle is the AC-type electric vehicle C2, the switch 17 is switched to the AC power distribution board 5 end, and the AC power is fed to the electric vehicle C2. Next, the alternating current is converted into a predetermined direct current by an alternating current/direct current converter (not shown) located in the electric vehicle C2, and the charging circuit 83 charges the battery 84 with direct current.

If the electric vehicle is an AC/DC rechargeable electric vehicle C3, the electric power fed by the power feeding device 1 can be output from the alternating current power distribution board 5 or the direct current/direct current converter 13. However, in consideration of the conversion loss accompanying the number of conversions, the direct current fed by the DC/DC converter 13 is preferable. In this case, the operation of the electric vehicle C3 is the same as that of the electric vehicle C1.

As described above, in the present embodiment, the AC power output from the AC power distribution board 5 or the DC power outputted by the DC/DC converter 13 can be selected as a via switch of the switch 17. The electric power is fed to the electric vehicles C1 to C3 by the feeder L1. Therefore, a convenient feeding system can be provided.

(Specific embodiment 4)

Referring to Figures 4 and 5, the power feeding device and the power feeding system according to the specific embodiment 4 will be explained as follows. In the present embodiment, the control device 3 is configured to respectively depend on the feed information (feed voltage and feed current) of the electric vehicle C transmitted from the power feeding device 1, the remaining power of the battery 7, and the solar energy production device. The electric power production state of 6 and the feed state of the AC/DC converter 23 determine the feed ratio of the battery 7, the solar energy production device 6, and the AC/DC converter 23. Then, DC power corresponding to the determined feed ratio is fed to the power feeding device 1 separately. Other features and functions are the same as in the specific embodiments 1 to 3. Therefore, the same constituent elements are denoted by the same numerals, and the description thereof will be omitted. The power feeding system of the present embodiment includes the power feeding device 1, the DC power distribution board 2, the control device 3, the control panel 4, and the AC power distribution board. 5.

The feed information of the electric vehicle C is transmitted from the power feeding device 1 to the control device 3 via the interface circuit 14. Further, the remaining amount of the battery 7, the electric production state of the solar energy generating apparatus 6, and the feeding state of the AC/DC converter 23 are input to the control device 3. The control device 3 determines the individual feed ratios of the battery 7, the solar energy production device 6, and the AC/DC converter 23 based on their information. Then, the direct current corresponding to the determined feed ratio is individually fed from the DC/DC converters 21, 22 and the AC/DC converter 23 to the feeder 1.

FIG. 5 shows an example of feeding from the DC power distribution board 2 to the power feeding unit 1. The power feeding system is explained as follows. For example, the power feeding device 1 is required to feed the voltage DC 300 [volt] and the feeding current 20 [ampere] by the C terminal of the electric vehicle. Then, in the case where the strip (a) in Fig. 5 is displayed, the power fed by the AC/DC converter 23 is set to zero. In this case, when the electric power fed by the solar energy production apparatus 6 is set to 2000 [volt-amperes] and the electric power fed by the battery 7 is set to 1000 [volt-amperes], it can be used for feeding to the electric vehicle C. The total power is 3000 [volt-ampere]. Therefore, the power feeding device 1 can feed DC power of 300 [volts] and 10 [amperes] to the electric vehicle C.

Then, in the case where the strip (b) in Fig. 5 is displayed, the electric power fed by the AC/DC converter 23 and the solar energy producing apparatus 6 is set to 0, respectively. In this case, when the electric power fed from the battery 7 is set to 1000 [VA], the power feeding device 1 can feed the direct currents 300 [V] and 3.3 [A] to the electric vehicle C. Next, as shown by the strip (c) in FIG. 5, when the electric power fed from the AC/DC converter 23 and the battery 7 is set to 1000 [VA], respectively, and the electric power fed from the solar energy generating apparatus 6 When it is set to 2000 [VA], the total amount of power available for feeding to the electric vehicle C is 4000 [VA]. Therefore, the power feeding device 1 can feed DC power of 300 [V] and 13.3 [A] to the electric vehicle C. Next, as shown by the strip (d) in Fig. 5, when the electric power fed from the solar energy producing apparatus 6 and the battery 7 is set to 0, respectively, and the electric power fed from the AC/DC converter 23 is set to 1000. At [VA], the power feeding device 1 can feed the direct currents 300 [V] and 3.3 [A] to the electric vehicle C.

The operation of the power feeding system is the same as that of the above-described specific embodiments 1 to 3, and therefore, the description thereof will be omitted.

As described above, the feed system of the present embodiment is based on the feed information transmitted from the electric vehicle C, the electric production state of the solar energy production device 6, the remaining power of the battery 7, and the AC/DC converter 23, respectively. The feed state determines the feed ratio of the solar energy production device 6, the battery 7, and the AC/DC converter 23. Therefore, the feeding system feeds the direct current that can be used for feeding to the electric vehicle C.

The case where the device is the electric vehicle C has been described in the specific embodiments 1 to 4 described above. However, the device is not limited to the electric vehicle C, and the device may be other items as long as the device has a battery. Further, in the specific embodiments 1 to 4, the power feeding device 1 communicates with the electric vehicle C via the signal line L2. However, the communication configuration of the power feeding system is not limited to those described in the specific embodiments 1 to 4. For example, a signal for communication between the power feeding device 1 and the electric vehicle C may be stacked on the feeder L1 for feeding DC power instead of the signal line L2. Also, wireless communication can be used.

While the invention has been described with respect to the specific embodiments illustrated in the preferred embodiments of the invention

1. . . Feeder

2. . . DC power distribution board

3. . . Control device

4. . . control panel

5. . . AC power distribution board

6. . . Solar energy production unit

7. . . Battery

11. . . Power control circuit

12. . . Communication circuit

13. . . DC/DC converter

14. . . Interface circuit

15. . . Feed connector

16. . . AC/DC converter

17. . . Switcher

twenty one. . . DC/DC converter

twenty two. . . DC/DC converter

twenty three. . . AC/DC converter

twenty four. . . Cooperation control component

25. . . DC circuit breaker

51. . . Main breaker

52. . . Branch breaker

81. . . Charging control circuit

82. . . Signal communication circuit

83. . . Charging circuit

84. . . battery

85. . . Car end connector

100. . . AC power

C. . . Electric car

C1. . . Electric car

C2. . . Electric car

C3. . . Electric car

H. . . Residential

L1. . . Feeder

L2. . . Signal line

The preferred embodiments of the present invention are described in further detail above. Other features and advantages of the present invention will become more readily apparent from the Detailed Description of the Drawing.

1A is a view showing a frame format of a power feeding system according to Embodiment 1 of the present invention;

1B is a detailed view showing a necessary part of a power feeding system according to a specific embodiment 1 of the present invention;

2A is a view showing a frame format of a power feeding system according to Embodiment 2 of the present invention;

Figure 2B is a detailed view showing a necessary part of the power feeding system according to the second embodiment of the present invention;

3A is a view showing a frame format of a power feeding system according to Embodiment 3 of the present invention;

Figure 3B is a detailed view showing the necessary parts of the power feeding system according to Embodiment 3 of the present invention:

4 is a view showing a frame format of a power feeding system according to a fourth embodiment of the present invention; and

Figure 5 is an explanatory view showing the state of charge of the power feeding system according to Embodiment 4 of the present invention.

1. . . Feeder

2. . . DC power distribution board

3. . . Control device

4. . . control panel

6. . . Solar energy production unit

7. . . Battery

11. . . Power control circuit

12. . . Communication circuit

13. . . DC/DC converter

14. . . Interface circuit

15. . . Feed connector

twenty one. . . DC/DC converter

twenty two. . . DC/DC converter

twenty three. . . AC/DC converter

twenty four. . . Cooperation control component

25. . . DC circuit breaker

81. . . Charging control circuit

82. . . Signal communication circuit

83. . . Charging circuit

84. . . battery

85. . . Car end connector

100. . . AC power

C. . . Electric car

H. . . Residential

L1. . . Feeder

L2. . . Signal line

Claims (5)

A feed device includes a feed connector coupled to a battery-equipped device for receiving a DC power supply and feeding the desired DC power to the device, wherein the feed is The device includes: a feed information collection component, the component obtains feed information related to a feed voltage and a feed current for battery charging from the device; and a control component configured to be based on the feed information collection component The obtained information is used to set the feed voltage and the feed current fed to the device, and output a charge enable signal to the device to control the charging current of the charging circuit; and a DC/DC converter, the conversion The device feeds the feed voltage and the feed current set by the control unit to the device; wherein the device includes a charging circuit that charges the battery with a charging current corresponding to the charge enable signal. A feeding system comprising: a feeding device according to claim 1 of the patent application; a DC power supply component feeding the direct current to the feeding device; and a transmitter transmitting the DC power supply component The power feeding information is provided to the power feeding device, wherein the control component of the power feeding device is set based on the power feeding information acquired by the power feeding information collecting component and the power feeding information of the DC power source component transmitted from the transmitter A feed voltage and a feed current fed to the device, wherein the DC/DC converter feeds the feed voltage and feed current set by the control unit to the device. The feeding system of claim 2, the system further comprising an alternating current power supply component, the component feeding alternating current to the feeding device, wherein the feeding device is provided with an alternating current/direct current converter for communicating The alternating current fed by the power supply assembly is converted into a direct current of a feed voltage and a feed current set by the control unit, and then fed to the device. The feeding system of claim 2, the system further comprising an alternating current power supply unit feeding the alternating current to the feeding device, wherein the feeding device is provided with a switching component, and the component is switched to the alternating current power component An output of the output or DC/DC converter, wherein the feed information collection component obtains a selection signal from the device for selecting an output of the AC power component or an output of the DC/DC converter, wherein the control component is The switching of the switching component is controlled based on the selection signal, and when the selection signal from the feed information collection component is received, power is fed to the device via the feeder. A feeding system comprising: a feeding device according to claim 1 of the patent application; a DC power supply component, the component feeding DC power to the feeding device; and a control device for controlling the DC power source a feed of components; a solar energy generating device as a power source for feeding DC power to the DC power source assembly; a battery for storing excess power generated by the solar energy generating device; and an AC/DC converter, wherein the control The device is configured to be based on the individual feed information transmitted by the power feeding device, the power production state of the solar energy generating device, the remaining power of the battery, and the power feeding state of the AC/DC converter. The feed ratio of the solar energy generating device, the storage battery, and the AC/DC converter is determined.