JP6420232B2 - Charge / discharge device - Google Patents

Description

  The present invention relates to a charging / discharging device for charging / discharging an electric vehicle or the like.

  In recent years, electric vehicles driven by electric power have begun to spread in place of vehicles using internal combustion engines that have a large environmental load due to waste gas. An electric vehicle is equipped with a large-capacity storage battery (battery) for storing electric power used during traveling. Thus, as one of the new utilization methods for electric vehicles, it has been conventionally proposed to supply electric power in a storage battery of an electric vehicle to each load (device) in a home at the time of a power failure.

  In many cases, a so-called charging / discharging device having both charging and discharging functions is used for charging an electric vehicle and supplying (discharging) electric power from the electric vehicle to the home. Patent Documents 1 to 4 disclose examples of conventional charge / discharge devices.

JP 2014-200170 A (published on October 23, 2014) JP2013-255360A (released on December 10, 2013) Japanese Patent Laid-Open No. 11-178241 (released July 2, 1999) JP 2011-234561 A (published November 17, 2011)

  However, the conventional charging / discharging device described above has a problem that the maintainability of the charging / discharging device is low. For example, in the charging / discharging device of Patent Document 1, since the battery unit is disposed inside the battery unit, it is difficult for the owner of the charging / discharging device to replace the battery unit himself, and it is necessary to deal with a specialist. . In addition, for a specialist, replacement work of the battery unit incorporated in the charging / discharging device is complicated and takes a long time. Furthermore, in order to prevent the inside of the charging / discharging device from getting wet with rain, considerable curing is required during rainy weather, so it is difficult to replace the battery unit.

  The present invention has been made to solve the above problems. And the objective is to implement | achieve the charging / discharging apparatus with high maintainability.

  In order to solve the above-described problems, the charging / discharging device according to the present invention uses power supplied from a casing that stores internal components of the charging / discharging device and a start-up battery disposed outside the casing. And a starting circuit for starting the charging / discharging device.

  According to the above configuration, since the start-up battery is arranged outside the housing for storing the internal components of the charge / discharge device, the case is replaced with a new case when the old start-up battery is replaced with a new one. There is no need to open. Since the charging / discharging live part is inside the casing, there is no possibility that the body of the replacement operator will come into contact with the live part inside the casing when the activation battery outside the casing is replaced. Therefore, the owner of the charge / discharge device can replace the start-up battery with a new one without requesting a specialist. From this, the maintainability of the charge / discharge device can be enhanced.

  The charge / discharge device according to the present invention is further characterized in that the start-up battery is arranged in a building.

  According to the above configuration, since the temperature in the building is sufficiently warm even in the winter in a cold region, the start-up battery in the building functions. Thereby, since the starting circuit can be supplied with the power for starting from the battery for starting in a building, it can start a charging / discharging apparatus.

  In addition, since the temperature in the building is stable regardless of the natural environment, the startup battery is not exposed to high temperatures. Thereby, the lifetime of the battery for starting can also be lengthened.

  The charge / discharge device according to the present invention is further characterized in that the start-up circuit is arranged outside the casing.

  According to said structure, since the distance between a starting circuit and a starting battery can be shortened, the possibility of the voltage drop of the electric power supplied from a starting battery to a starting circuit decreases. Therefore, since the start-up circuit can receive the supply of electric power having a voltage sufficient to start up the charge / discharge device from the start-up battery, it is possible to start up the charge / discharge device.

  The charging / discharging device according to the present invention is further characterized in that the starting battery is a dry cell.

  According to said structure, since a dry cell can be obtained cheaply and easily as a commercial item, the cost which a starting battery requires can be lowered | hung. In addition, it is possible to eliminate waiting for a new order when replacing the starting battery. Further, if a plurality of dry batteries are connected in series, the voltage of the electric power supplied from the dry batteries to the starting circuit can be increased. Therefore, even if a voltage drop occurs in the power supplied from the dry battery to the starter circuit due to the long distance between the starter circuit and the dry battery, the starter circuit supplies power with a voltage sufficient to start the charging / discharging device. Can be received from the dry battery, so that the charging / discharging device can be activated.

  In the charging / discharging device according to the present invention, the start-up circuit is disposed inside the housing, and the start-up battery has a voltage higher than a prescribed voltage at which the start-up circuit can start the charge / discharge device. A high voltage power is supplied to the starting circuit.

  According to the above configuration, even if a voltage drop occurs in the power supplied from the start-up battery to the start-up circuit because the distance between the start-up battery and the start-up circuit is long, the start-up circuit has a power higher than the specified voltage. Can be received from the start-up battery.

  The charging / discharging device according to the present invention further includes an internal startup battery disposed inside the casing, and the startup battery and the internal startup battery are parallel to the startup circuit. It is characterized by being connected to.

  According to the above configuration, even if a voltage drop occurs in the power supplied to the start-up circuit from the start-up battery outside the housing, the power supplied from the internal start-up battery inside the housing You can make up for it. As a result, power of a specified voltage can be supplied to the starting circuit, so that the starting circuit can start the charging / discharging device.

  In the charging / discharging device according to the present invention, the starting battery and a wiring connected to a control power source of the electric vehicle in a cable for charging / discharging the electric vehicle are connected to the starting circuit. It is characterized by being connected in parallel.

  According to the above configuration, even when a voltage drop occurs in the power supplied from the start-up battery outside the housing to the start-up circuit, the control of the electric vehicle in the cable for charging / discharging the electric vehicle is performed. It can be supplemented by the voltage of the electric power obtained from the control power source of the electric vehicle through the wiring connected to the power source. As a result, power of a specified voltage can be supplied to the starting circuit, so that the starting circuit can start the charging / discharging device.

  The charging / discharging device according to the present invention is further characterized in that the starting battery and a cigar socket of an electric vehicle are connected in parallel to the starting circuit.

  According to the configuration described above, even if a voltage drop occurs in the power supplied from the start-up battery outside the housing to the start-up circuit, it can be compensated for by the power voltage acquired from the cigar socket. As a result, power of a specified voltage can be supplied to the starting circuit, so that the starting circuit can start the charging / discharging device.

  In the charging / discharging device according to the present invention, the start-up battery further includes a power line for supplying DC power to the start-up circuit and supplying the DC power from the start-up battery to the start-up circuit. It is characterized by that.

  According to said structure, the electric power for starting can be directly supplied to the starting circuit from the battery for starting outside the housing | casing.

  The charge / discharge device according to the present invention is further characterized in that the start-up battery supplies AC power to the start-up circuit.

  According to said structure, alternating current power with little possibility of a voltage drop is supplied with respect to a starting circuit from the battery for starting. Therefore, the starting circuit can start the charging / discharging device.

  According to one aspect of the present invention, there is an effect that the maintainability of the charge / discharge device can be enhanced.

It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows the flow of a process when the charging / discharging apparatus which concerns on Embodiment 1 of this invention starts a self-sustained operation. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 3 of this invention. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 4 of this invention. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 5 of this invention. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 6 of this invention. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 7 of this invention. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 8 of this invention. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 9 of this invention. It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 10 of this invention.

Embodiment 1
Embodiment 1 according to the present invention will be described below with reference to FIGS. 1 and 2.

(Configuration of charging / discharging device 1)
FIG. 1 is a diagram showing a configuration of a charge / discharge device 1 according to Embodiment 1 of the present invention. As shown in this figure, the charging / discharging device 1 includes a housing 11, a power supply circuit 12 (starting circuit), a control circuit 13, a transformer 14, a charging / discharging circuit 15, a charging / discharging cable 16, and a power line 17. The charging / discharging device 1 is used for both charging from the commercial power system 4 to the electric vehicle 2 and supplying power from the electric vehicle 2 to each load 32 in the building 3. Therefore, the charging / discharging device 1 is installed outside the building 3 (in a garage or the like).

  The casing 11 is a container having a specific shape for storing internal components (the power supply circuit 12, the control circuit 13, and the like) constituting the charging / discharging device 1. In the present embodiment, the power supply circuit 12, the control circuit 13, the transformer 14, the charge / discharge circuit 15, and a part of the power line 17 are disposed inside the housing 11.

  The building 3 is a building used for a person to perform various activities such as life or labor inside, such as a house, a store, an office building, or a factory. Commercial AC power having a specified voltage (100 V / 200 V) is supplied from the commercial power system 4 into the building 3. This AC power is supplied to each load 32 (lighting device, home appliance, electronic device, etc.) in the building 3 through the distribution board 31 in the building 3. Each load 32 operates using supplied power (or DC power converted therefrom).

  The charging / discharging device 1 is connected to the secondary side (downstream) of the distribution board 31 in the building 3 via an AC power line. When commercial AC power is normally supplied into the building 3, the power supply circuit 12 of the charging / discharging device 1 can receive this AC power supply through the distribution board 31. The charging / discharging device 1 uses, as a control power source for the charging / discharging device 1, commercial AC power supplied to the charging / discharging device 1 from the commercial power system 4 via the distribution board 31. The control power supply is a power supply for obtaining a control power of a predetermined voltage (for example, 12V) necessary for the activation and subsequent operation of the charging / discharging device 1. The power supply circuit 12 converts the supplied AC power into control power of a predetermined voltage (for example, 12 V) used for the operation of the charge / discharge device 1 and supplies the control power to the control circuit 13. As a result, the control circuit 13 and the like are activated. As the power supply circuit 12 continues to supply control power to the control circuit 13, the control circuit 13 can continue its operation. Note that the control power supplied to the control circuit 13 is also supplied to other internal components such as the charge / discharge circuit 15, thereby realizing start-up and continued operation of the entire charge / discharge device 1.

(Charging operation)
The charge / discharge cable 16 is a cable for charging / discharging the electric vehicle 2. As shown in FIG. 1, the charge / discharge cable 16 includes a power line 16a for power transmission and reception and a signal line 16b for signal transmission / reception. In the figure, only one signal line 16b is shown to avoid complication, but actually, a plurality of different signal lines 16b are provided in the charge / discharge cable 16. If the charging / discharging cable 16 is connected to the electric vehicle 2, the electric vehicle 2 is charged using the charging / discharging device 1, or the electric power stored in the storage battery of the electric vehicle 2 is supplied into the building 3 at the time of a power failure. (Self-sustained operation) The charge / discharge cable 16 is a charge / discharge cable including a CHAdeMO (registered trademark) connector that can charge / discharge the electric vehicle 5.

  The charging / discharging device 1 is not limited to the electric vehicle 5, but includes various types of vehicles (hybrid vehicles) that include a storage battery for driving and that can travel by converting electric power in the storage battery into driving force. Etc.).

  AC power is supplied from the building 3 to the transformer 14 in addition to the power circuit 12. The transformer 14 converts the supplied AC power into AC power having other specified voltage, and supplies the converted AC power to the charge / discharge circuit 15. The charging / discharging circuit 15 converts the AC power supplied from the transformer 14 into DC power having a specified voltage (for example, 400 V) suitable for charging the electric vehicle 2 based on the control by the control circuit 13, and the converted DC power Electric power is supplied to the electric vehicle 2 through the charge / discharge cable 16 connected to the electric vehicle 2. Thereby, the storage battery in the electric vehicle 2 is charged. The operation of the charging / discharging device 1 when charging the electric vehicle 2 is particularly called a charging operation.

(Independent operation)
When a power failure occurs, AC power is no longer supplied from the commercial power system 4 into the building 3. The charging / discharging device 1 takes out the electric power stored in the storage battery in the electric vehicle 2 in order to supply electric power to the building 3 from an electric power supply source other than the commercial power system 4 at the time of a power failure, and uses this as an AC for the building 3 It can be converted into electric power and supplied to the building 3. This is particularly called self-sustained operation of the charge / discharge device 1. In addition, the charging / discharging apparatus 1 uses the electric power taken out from the electric vehicle 1 (hereinafter referred to as an independent operation output) as a control power source during the independent operation.

  During the self-sustained operation, the charge / discharge circuit 15 takes out DC power of a specified voltage (for example, 400 V) from the storage battery in the electric vehicle 2 through the charge / discharge cable 16. The charge / discharge circuit 15 receives the control of the control circuit 13, converts the DC power extracted from the electric vehicle 2 into AC power having a predetermined voltage, and supplies the AC power to the transformer 14. The transformer 14 converts the supplied AC power into AC power of a specified voltage (for example, 100 V or 200 V) that can be used in the building 3, and passes through a power line for AC power that connects the transformer 14 and the distribution board 31. To the secondary side of the distribution board 31 in the building 3. The AC power thus supplied from the charging / discharging device 1 to the building 3 is supplied to each load 32 via the secondary side of the distribution board 31. Each load 32 operates using AC power supplied from the charging / discharging device 1.

  Note that the charging / discharging device 1 may have a configuration in which the charging / discharging circuit 15 has an insulating portion from the AC power line, and the insulating portion functions as a transformer. In this case, the transformer 14 is not necessary for the charge / discharge device 1.

(System interconnection operation)
Moreover, the charging / discharging apparatus 1 can supply the electric power accumulate | stored in the storage battery of the electric vehicle 2 in the building where the distribution board 31 is provided also at the time of a non-power failure. At this time, AC power is supplied to the distribution board 31 from both the commercial power system 4 and the charge / discharge device 1. The operation state of the charging / discharging device 1 when the AC power supply of such an aspect is performed is particularly called a grid interconnection operation.

(Startup by the starter battery 18)
Since the charging / discharging device 1 cannot receive the supply of commercial AC power through the distribution board 31 at the time of a power failure, it cannot be activated using the commercial AC power, that is, the commercial AC power cannot be used as a control power source. . Therefore, in order to start the charging / discharging device 1 at the time of a power failure, a starting battery 18 for starting the charging / discharging device 1 at the time of a power failure is used.

  In the present embodiment, the starting battery 18 is a battery that outputs DC power of a specified voltage (12 V) that can start the charging / discharging device 1. As shown in FIG. 1, the start-up battery 18 is arranged not on the inside of the housing 11 but on the outside. More specifically, the activation battery 18 is disposed at any location in the building 3 where the distribution board 31 is provided. The start-up battery 18 connects the start-up battery 18 and the power supply circuit 12 and extends to the outside of the housing 11 via a power line 17 for supplying DC power from the start-up battery 18 to the power supply circuit 12. A power supply circuit 12 in the housing 11 is connected. Therefore, the power supply circuit 12 and the starting battery 18 are separated to some extent. When a power failure occurs, the power supply circuit 12 starts up the charging / discharging device 1 using a DC voltage supplied from a startup battery 18 disposed outside the housing 11.

(Advantages of this embodiment)
As shown in FIG. 1, in the charging / discharging device 1 according to the first embodiment, since the activation battery 18 is disposed outside the casing 11, the old activation battery 18 can be replaced without opening the casing 11. Can be replaced with a new one. Inside the case 11 is a charging / discharging live part (breaker and fuse wiring parts, etc., and energized parts not covered with insulating clothing). When the battery 18 is replaced, there is no possibility that the body of the replacement operator contacts the live part in the housing 11. Therefore, the owner of the charge / discharge device 1 can also replace the activation battery 18 with a new one without requesting a specialist. From this, the maintenance property of the charging / discharging device 1 can be enhanced.

  Further, as shown in FIG. 1, the startup battery 18 is disposed in the building 3. In winter in cold regions, each member such as the casing 11 of the charging / discharging device 1 disposed outside the building 3 and the power supply circuit 12 disposed therein is exposed to low temperature outside air, and thus the temperature is low. It has become. On the other hand, since the temperature in the building 3 is sufficiently warm even in a cold region and in winter, the temperature of the starting battery 18 in the building 3 is also sufficiently high, and thus the starting battery 18 functions. Thereby, since the power supply circuit 12 can be normally supplied with the electric power for starting from the battery 18 for starting in the building 3, it can start the charging / discharging apparatus 1. FIG.

  Further, since the temperature in the building 3 is stable regardless of the natural environment, the startup battery 18 is not exposed to the high temperature in summer. Thereby, the lifetime of the battery 18 for a start can also be lengthened.

  The activation battery 18 may be disposed at any location in the building 3. For example, the activation battery 18 may be disposed in any room of the building 3 or may be disposed in the distribution board 31.

  Further, the startup battery 18 is not necessarily arranged inside the building 3. That is, the activation battery 18 may be disposed anywhere as long as it is outside the housing 11. For example, the startup battery 18 may be disposed next to the housing 11 outside the building 3. As long as the starter battery 18 is arranged even outside the housing 11, the owner of the charge / discharge device 1 can easily replace the starter battery 18 by itself. Maintenance can be improved.

(Sales mode of charge / discharge device 1)
In the example of FIG. 1, the charging / discharging device 1 that does not include the activation battery 18 as a constituent element is described. In this aspect, the charging / discharging device 1 that does not include the activation battery 18 is sold. When the charging / discharging device 1 is installed in each home, the distributor of the charging / discharging device 1 (or the owner of the charging / discharging device 1) procures the start-up battery 18 separately, and the outside of the housing 11 (of the building 3). It is assumed that the starting battery 18 is connected to the power line 17.

  However, the present invention is not necessarily limited to this aspect, and the charging / discharging device 1 may include the activation battery 18 as one of its components. In this aspect, the charging / discharging device 1 that includes the activation battery 18 in advance is sold. When the charging / discharging device 1 is installed in each home, the starting battery 18 is removed from the charging / discharging device 1 and placed outside the housing 11 (inside the building 3 or the like). It is assumed that they are connected to.

(Flow of starting autonomous operation)
FIG. 2 is a flowchart showing a process flow when the charge / discharge device 1 according to Embodiment 1 of the present invention starts a self-sustaining operation.

  As shown in the figure, the charging / discharging device 1 is charged / charged in a situation where the commercial AC power from the commercial power system 4 is supplied to the charging / discharging device 1 via the distribution board 31 (during charging operation or standby). The control power supply of the discharge device 1 is acquired from the system power supply (S1). The charging / discharging device 1 determines whether or not a power failure has occurred during charging operation or standby (S2). For example, when the supply of AC power to the charging / discharging device 1 through the distribution board 31 is stopped, S2 is YES, and otherwise S2 is NO.

  If S2 is NO, the charge / discharge device 1 does nothing. On the other hand, if S2 is YES, the charging / discharging device 1 switches its control power source from the building 3 (distribution panel 31) to the starting battery 18 (S3). Next, the charging / discharging device 1 determines whether or not it is currently operating (S4). For example, if charging / discharging device 1 is charging electric vehicle 2, S4 is YES, and if not, S4 is NO.

  If S4 is YES, the charging / discharging device 1 stops the current operation (S5). If the charging / discharging device 1 is charging the electric vehicle 2, the processing is stopped. Thereafter, the charging / discharging device 1 notifies the user that a power failure has occurred (S6). As the notification method, various information such as information display on a display panel (not shown) provided in the charge / discharge device 1, lighting control of an LED (not shown) provided in the charge / discharge device 1, or e-mail transmission to a user of the charge / discharge device 1 are provided. Can be considered. In addition, if S4 is NO, the charging / discharging apparatus 1 will immediately perform notification of a power failure occurrence (S6).

  After S6, the user opens (turns off) the main breaker of the distribution board 31 in order to cause the charging / discharging device 1 to perform a self-sustaining operation at an appropriate timing. An auxiliary contact signal indicating whether the main breaker is turned on or opened is supplied from the distribution board 31 to the charging / discharging device 1 through an auxiliary contact signal line (not shown). The charging / discharging device 1 determines whether or not the main breaker of the distribution board 31 is turned off (opened) based on the state of the auxiliary contact signal (S7). For example, if the auxiliary contact signal is on, S7 is NO, and if the auxiliary contact signal is off, S7 is YES.

  The charging / discharging device 1 may include an electromagnetic contactor (not shown) provided on a power line from the transformer 14 in the charging / discharging device 1 toward the distribution board 31. In this configuration, the charging / discharging device 1 turns off the electromagnetic contactor after detecting a power failure, thereby bringing the power line from the transformer 14 toward the distribution board 31 into a disconnected state (non-conductive state). In this case, since the charging / discharging device 1 can automatically disconnect the charging / discharging device 1 from the commercial power system 4 regardless of the state of the main breaker after the power failure is detected, the user opens the main breaker of the distribution board 31 by the user. No operation is required.

  If S7 is NO, the charging / discharging device 1 determines whether or not a certain time has elapsed since the backup of the control power source by the activation battery 18 (S8). Here, “backup” means that the operating charging / discharging device 1 switches the control power source from the building 3 to the starting battery 18 and continues the operation, and the stopped charging / discharging device 1 replaces the starting battery 18. It includes both meanings of using and starting the charging / discharging device 1.

  If S8 is NO, the charge / discharge device 1 does nothing. On the other hand, if S8 is YES, the charging / discharging device 1 turns off the control power supply (S9). This means that the power supply from the starting battery 18 is stopped and the operation of the charging / discharging device 1 is stopped. As a result, it is possible to prevent the power stored in the start-up battery 18 from being consumed unnecessarily without starting the self-sustaining operation for a long time.

  After S9, the charging / discharging device 1 determines whether or not a power-on operation has been performed by the user (S10). For example, if a power button (not shown) of the charging / discharging device 1 is pressed, S10 is YES, otherwise S10 is NO.

  If S10 is NO, the charge / discharge device 1 does nothing. That is, the charging / discharging device 1 stands by until a power-on operation is performed by the user. On the other hand, if S10 is YES, the charging / discharging device 1 is activated using the activation battery 18 (S11). That is, the power supply circuit 12 receives supply of 12V DC power from the activation battery 18 and activates the charging / discharging device 1 using this. As a result, the control circuit 13 and the like become operable again. Thereafter, the processing shown in FIG. 2 returns to S7.

  If S7 is YES, the charging / discharging device 1 enters the stand-by state for the independent operation (S12). That is, the charging / discharging device 1 does not automatically start the independent operation, but waits for the user to start the independent operation. Thereafter, the charging / discharging device 1 determines whether or not there has been a start operation of the independent operation by the user (S13). For example, if the user presses a self-sustained operation start button (not shown) of the charging / discharging device 1, S13 becomes YES, and otherwise S13 becomes NO.

  If S13 is NO, it is determined whether or not a predetermined time has elapsed since the backup of the control power source by the startup battery 18 (S14). If S14 is NO, the charging / discharging device 1 does nothing in particular. On the other hand, if S14 is YES, the charging / discharging device 1 turns off the control power supply (S9).

  If S13 is YES, the charging / discharging device 1 starts a self-sustained operation (S15), and switches the control power source to a self-sustained operation output (S16). Thereby, the charging / discharging apparatus 1 can continue a self-sustained operation using the electric power taken out from the electric vehicle. The charging / discharging device 1 takes out DC power from the storage battery in the electric vehicle 2, converts it into AC power, and supplies it to the building 3. In this way, supply of AC power to the building 3 during a power failure is realized.

[Embodiment 2]
A second embodiment according to the present invention will be described below with reference to FIG. FIG. 3 is a diagram showing a configuration of a charge / discharge device 1A according to Embodiment 2 of the present invention. As shown in this figure, the charging / discharging device 1A is similar to the charging / discharging device 1 of the first embodiment, with a housing 11, a power circuit 12, a control circuit 13, a transformer 14, a charging / discharging circuit 15, a charging / discharging cable 16, and A power line 17 is provided.

  In the charging / discharging device 1 </ b> A, unlike the charging / discharging device 1 of the first embodiment, the power supply circuit 12 is also arranged outside the housing 11 (inside the building 3) in addition to the activation battery 18. The power supply circuit 12 is connected to the distribution board 31 through a predetermined power line inside the building 3, and can receive supply of AC power from the distribution board 31. In the building 3, the power supply circuit 12 and the starter battery 18 are connected to each other via a predetermined power line.

  The control circuit 13 in the housing 11 is connected to the power supply circuit 12 in the building 3 through the power line 17. Since the power supply circuit 12 is disposed inside the building 3, there is a certain distance between the control circuit 13 and the power supply circuit 12. That is, a certain length is required for the wiring connecting them.

  The starter battery 18 can output only DC power of a specified voltage (12V). In other words, DC power having a voltage significantly exceeding 12 V cannot be output. Therefore, when the distance from the starting battery 18 to the inside of the housing 11 is increased, the configuration in which the direct-current power output from the starting battery 18 is directly supplied to the housing 11 (Embodiment 1 or the like) is affected by the voltage drop. In response, there is a risk that the DC power of a sufficiently high voltage that can start up the charging / discharging device 1 </ b> A is not supplied into the housing 11.

  For example, in the charging / discharging device 1 of the first embodiment, a DC power of 12 V and 5 A is output from the startup battery 18 using a 50 m 0.75 sq cable for the power line 17 connecting the startup battery 18 and the power supply circuit 12. In this case, a voltage drop of about 5V occurs. That is, the 12V DC power output from the starting battery 18 drops to about 7V DC power when input to the control circuit 13 inside the housing 11. In this case, since a sufficiently high voltage is not supplied to the power supply circuit 12, the power supply circuit 12 may not be able to start up the charging / discharging device 1.

  On the other hand, in the present embodiment, the power supply circuit 12 is also outside the housing 11 (inside the building 3), like the starter battery 18. Therefore, since the power supply circuit 12 and the starting battery 18 can be arranged close to each other, the influence of the voltage drop of the AC power supplied from the starting battery 18 to the power supply circuit 12 can be almost eliminated.

  Further, the power supply circuit 12 converts the DC power of 12V supplied from the starting battery 18 into DC power having a higher voltage (for example, 24V) and outputs the DC power to the control circuit 13 inside the housing 11. Can do. Therefore, even if a voltage drop occurs in the DC power supplied from the power supply circuit 12 to the control circuit 13 because the distance between the power supply circuit 12 and the control circuit 13 is long, the control circuit 13 includes the control circuit 13. DC power having a height (for example, 12V) or more necessary for starting the power can be supplied.

  When AC power of 12V or more is supplied to the control circuit 13, the control circuit 13 converts this into 12V DC power by a voltage conversion process at the time of input. Thereby, the control circuit 13 can be normally started using 12V DC power.

  When the AC power is normally supplied from the commercial power system 4 to the building 3 and the starter battery 18 is a rechargeable battery, the power circuit 12 supplies the AC power supplied via the distribution board 31. Can be converted into 12V DC power, and the starting battery 18 can be charged using this. In the present embodiment, since the distance between the power supply circuit 12 and the start-up battery 18 is short, the wiring connecting the two may be short. Therefore, it is possible to almost eliminate the influence of the voltage drop on the DC power supplied from the power supply circuit 12 to the startup battery 18 when the startup battery 18 is charged. From this, in this embodiment, the loss of the electric power used at the time of charging the starting battery 18 in the building 3 with the power supply circuit 12 can be suppressed.

[Embodiment 3]
With reference to FIG. 4, Embodiment 3 which concerns on this invention is demonstrated below. FIG. 4 is a diagram showing a configuration of a charge / discharge device 1B according to Embodiment 3 of the present invention. As shown in this figure, the charging / discharging device 1B includes a housing 11, a power supply circuit 12, a control circuit 13, a transformer 14, a charging / discharging circuit 15, a charging / discharging cable 16, and a power line 17.

  Unlike the charging / discharging device 1 of the first embodiment, the charging / discharging device 1 </ b> B uses a dry battery 19 as the starting battery 18. That is, the dry battery 19 is used as a control power source when the power supply circuit 12 starts up the charging / discharging device 1B. The dry battery 19 is arranged outside the housing 11 (inside the building 3), like the start-up battery 18 of the first embodiment. Therefore, since it is hardly affected by the outside air temperature, it can function normally in winter and summer.

  If a plurality of dry batteries 19 are connected in series, the voltage of the electric power supplied from the dry batteries 19 to the power supply circuit 12 can be increased. Thereby, the voltage of the direct-current power output from the dry battery 19 can be made into 12 V or more of regulation. Therefore, even if a voltage drop occurs in the power supplied from the dry battery 19 because the power line 17 between the power supply circuit 12 and the dry battery 19 is long, the power of the specified voltage of 12 V or more is supplied to the power supply circuit 12. Can be supplied. Thereby, the power supply circuit 12 can start the charging / discharging apparatus 1B.

  The dry battery 19 can be easily and inexpensively obtained as a commercial product. Therefore, the cost required for the dry battery 19 used as the starting battery 18 can be reduced. Moreover, it is possible to eliminate waiting for a new order when replacing the dry battery 19. In addition, the dry battery 19 may be attached to the dry battery holder in the building 3 only when performing the autonomous operation.

  The dry battery 19 in the present embodiment may be rechargeable or disposable. When a disposable (non-rechargeable) dry battery 19 is used, a diode (not shown) needs to be provided on the power line 17 connecting the power supply circuit 12 and the dry battery 19 in order to prevent a backflow of current from the power supply circuit 12 to the dry battery 19. There is. Thereby, DC power can be supplied only from the dry battery 19 to the power supply circuit 12.

[Embodiment 4]
Embodiment 4 according to the present invention will be described below with reference to FIG. FIG. 5 is a diagram showing a configuration of a charge / discharge device 1C according to Embodiment 3 of the present invention. As illustrated in FIG. 1, the charge / discharge device 1 </ b> C includes a housing 11, a power supply circuit 12, a control circuit 13, a transformer 14, a charge / discharge circuit 15, a charge / discharge cable 16, and a power line 17.

  Unlike the charging / discharging device 1 of the first embodiment, the charging / discharging device 1 </ b> C uses a high voltage battery 20 as the starting battery 18. That is, the high voltage battery 20 is used as a control power source when the power supply circuit 12 activates the charging / discharging device 1C. The high-voltage battery 20 is arranged outside the housing 11 (inside the building 3), like the start-up battery 18 of the first embodiment. Therefore, since it is hardly affected by the outside air temperature, it can function normally in winter and summer.

  The high-voltage battery 20 can output DC power having a voltage (for example, 24V) higher than a specified voltage (12V) that can start the charging / discharging device 1C. Therefore, even if a voltage drop occurs in the power supplied from the high voltage battery 20 because the power line 17 between the power circuit 12 and the high voltage battery 20 is long, the power circuit 12 is supplied with power that exceeds the specified voltage. Can be supplied. Thereby, the power supply circuit 12 can start 1 C of charging / discharging apparatuses.

[Embodiment 5]
With reference to FIG. 6, Embodiment 5 which concerns on this invention is demonstrated below. FIG. 6 is a diagram showing a configuration of a charge / discharge device 1D according to Embodiment 5 of the present invention. As shown in this figure, the charging / discharging device 1D includes a housing 11, a power supply circuit 12, a control circuit 13, a transformer 14, a charging / discharging circuit 15, a charging / discharging cable 16, a power line 17, and a starting battery 21 (for internal starting). Battery).

  Unlike the charging / discharging device 1 of the first embodiment, the charging / discharging device 1 </ b> D of the present embodiment includes a startup battery 21 that is disposed inside the housing 11. Note that the activation battery 18 is disposed outside the housing 11 (inside the building 3), as in the first embodiment.

  Since the start-up battery 18 is disposed outside the housing 11 (inside the building 3), it is not easily affected by the outside air temperature, and can function normally in winter and summer. On the other hand, the startup battery 21 is arranged inside the housing 11, unlike the startup battery 18. Therefore, although influenced by the outside air temperature, in this embodiment, since the charging / discharging device 1D is not started using only the starting battery 21, the influence does not become a problem.

  In the charging / discharging device 1 </ b> D, the starter battery 18 and the starter battery 21 are connected to the power supply circuit 12 in parallel. Thus, even if a voltage drop occurs in the DC power supplied from the starting battery 18 outside the housing 11 to the power supply circuit 12, the DC power supplied from the starting battery 21 inside the housing 11. Can make up for it. Therefore, DC power having a specified voltage can be supplied to the power supply circuit 12. Thereby, the power supply circuit 12 can start up charging / discharging apparatus 1D.

  Diodes and fuses (not shown) are provided on the wiring connecting the starter battery 18 arranged outside the housing 11 (inside the building 3) and the power supply circuit 12. Thereby, the backflow of the electric current to the starting battery 18 outside the housing | casing 11 can be prevented. Further, it is possible to prevent an overcurrent from flowing through the wiring by blowing the fuse.

[Embodiment 6]
With reference to FIG. 7, Embodiment 6 which concerns on this invention is demonstrated below. FIG. 7 is a diagram showing a configuration of a charge / discharge device 1E according to Embodiment 6 of the present invention. As shown in this figure, the charging / discharging device 1E includes a housing 11, a power supply circuit 12, a control circuit 13, a transformer 14, a charging / discharging circuit 15, a charging / discharging cable 16, a power line 17, a power line 23, and a diode 24. Yes.

  Like the charging / discharging device 1 of the first embodiment, the startup battery 18 is disposed outside the housing 11 (inside the building 3), and therefore is not easily affected by the outside air temperature. Can function.

  Among the signal lines 16b in the charge / discharge cable 16, a specific signal line 16b is connected to a 12V control power source (not shown) in the electric vehicle 2. In the charging / discharging device 1 </ b> E, unlike the charging / discharging device 1 of the first embodiment, the activation battery 18 and a specific signal line 16 b in the charging / discharging cable 16 are connected in parallel to the power supply circuit 12. The specific signal line 16b is connected to the power supply circuit 12 via the power line 23 that connects the power supply circuit 12 and the specific signal line 16b. The power line 23 is provided with a diode 24 that allows current to flow only to the power supply circuit 12 side. Thereby, current backflow from the charge / discharge circuit 15 to the electric vehicle 2 through the specific signal line 16b can be prevented.

  Since the specific signal line 16 b is connected to a 12 V control power supply (not shown) in the electric vehicle 2, the power supply circuit 12 applies 12 V DC power to the electric vehicle 2 through the specific signal line 16 b in the charge / discharge cable 16. Can be taken out from. Since the starter battery 18 and the specific signal line 16b are connected in parallel to the power supply circuit 12, the voltage drops to the DC power supplied from the starter battery 18 outside the housing 11 to the power supply circuit 12. Even if this occurs, it can be compensated for by 12V DC power supplied from the electric vehicle 2 via the specific signal line 16b. Therefore, DC power having a specified voltage can be supplied to the power supply circuit 12. Thereby, the power supply circuit 12 can start the charging / discharging apparatus 1E.

[Embodiment 7]
With reference to FIG. 8, Embodiment 7 which concerns on this invention is demonstrated below. FIG. 8 is a diagram showing a configuration of a charging / discharging device 1F according to Embodiment 7 of the present invention. As shown in this figure, the charging / discharging device 1F includes a casing 11, a power supply circuit 12, a control circuit 13, a transformer 14, a charging / discharging circuit 15, a charging / discharging cable 16, a power line 17, a power line 23, and a diode 24. Yes.

  Like the charging / discharging device 1 of the first embodiment, the startup battery 18 is disposed outside the housing 11 (inside the building 3), and therefore is not easily affected by the outside air temperature. Can function.

  The electric vehicle 2 includes a cigar socket 25. In the charging / discharging device 1 </ b> F, unlike the charging / discharging device 1 of the first embodiment, the activation battery 18 and the cigar socket 25 are connected in parallel to the power supply circuit 12. The cigar socket 25 is connected to the power circuit 12 via a power line 23 that connects the power circuit 12 and the cigar socket 25. The power line 23 is provided with a diode 24 that allows current to flow only to the power supply circuit 12 side. Thereby, current backflow from the charge / discharge circuit 15 to the cigar socket 25 can be prevented.

  Since the cigar socket 25 is connected to a 12 V control power source (not shown) in the electric vehicle 2, the power circuit 12 can take out 12 V DC power through the cigar socket 25. Since the starting battery 18 and the cigar socket 25 are connected in parallel to the power supply circuit 12, a voltage drop occurs in the DC power supplied from the starting battery 18 outside the housing 11 to the power supply circuit 12. Even so, it can be supplemented by 12V DC power supplied from the electric vehicle 2 via the cigar socket 25. Therefore, DC power having a specified voltage can be supplied to the power supply circuit 12. Thereby, the power supply circuit 12 can start the charging / discharging apparatus 1F.

[Embodiment 8]
With reference to FIG. 9, Embodiment 8 which concerns on this invention is demonstrated below. FIG. 9 is a diagram showing a configuration of a charging / discharging device 1G according to Embodiment 8 of the present invention. As shown in this figure, the charging / discharging device 1G includes a housing 11, a power supply circuit 12, a control circuit 13, a transformer 14, a charging / discharging circuit 15, and a charging / discharging cable 16.

  Unlike the charging / discharging device 1 of the first embodiment, the charging / discharging device 1 </ b> G uses a startup battery 26 that supplies AC power to the power supply circuit 12 as the startup battery 18. That is, the starting battery 26 is used as a control power source when the power supply circuit 12 starts the charging / discharging device 1G.

  The start-up battery 26 is arranged outside the housing 11 (inside the building 3), like the start-up battery 18 of the first embodiment. Therefore, since it is hardly affected by the outside air temperature, it can function normally even in winter.

  The start-up battery 26 is connected to the secondary side (downstream) of the distribution board 31. The starting battery 26 is composed of an inverter and a rechargeable storage battery (not shown). During normal times (when there is no power failure), AC power supplied through the distribution board 31 is converted into DC power by the inverter, whereby the rechargeable storage battery of the start-up battery 26 is charged.

  The start-up battery 26 can convert the power stored in the rechargeable storage battery into AC power having a specified voltage (for example, 100 V / 200 V) by an inverter, and supply the AC power to the secondary side of the distribution board 31. The casing 11 is connected to the secondary side of the distribution board 31 through an AC power line. Therefore, the power supply circuit 12 is supplied with AC power from the activation battery 26 at the time of a power failure. The power supply circuit 12 converts the supplied AC power into DC power of a specified voltage (for example, 12V) used for the operation of the charging / discharging device 1G, and starts the charging / discharging device 1G using this. Thereby, the control circuit 13 in the charging / discharging device 1G can be operated even during a power failure.

  The AC power supplied from the startup battery 26 is less likely to cause a voltage drop than the DC power supplied from the startup battery 18 in the first embodiment or the like. Therefore, it is unlikely that AC power having an insufficient voltage is supplied to the power supply circuit 12. Thereby, the power supply circuit 12 can start the charging / discharging apparatus 1G. Further, the length of the AC power line connecting the starting battery 26 and the power supply circuit 12 can be avoided.

[Embodiment 9]
A ninth embodiment according to the present invention will be described below with reference to FIG. FIG. 10 is a diagram showing a configuration of a charge / discharge device 1H according to Embodiment 9 of the present invention. As shown in this figure, the charging / discharging device 1H includes a casing 11, a power supply circuit 12, a control circuit 13, a transformer 14, a charging / discharging circuit 15, a charging / discharging cable 16, a starting battery 21, a power line 22, a power line 23, and A diode 24 is provided.

  In the charge / discharge device 1H, unlike the charge / discharge device 1 of the first embodiment, the activation battery 18 is not disposed outside the housing 11 (inside the building 3). Instead, a startup battery 21 is arranged inside the housing 11. The activation battery 21 is connected to the housing 11 via a power line 22 inside the housing 11.

  As shown in FIG. 10, in the charging / discharging device 1 </ b> H, the starting battery 21 and a specific signal line 16 b in the charging / discharging cable 16 are connected in parallel to the power supply circuit 12. The specific signal line 16b is connected to the power supply circuit 12 via the power line 23 that connects the power supply circuit 12 and the specific signal line 16b. The power line 23 is provided with a diode 24 that allows current to flow only to the power supply circuit 12 side. Thereby, current backflow from the charge / discharge circuit 15 to the electric vehicle 2 through the specific signal line 16b can be prevented.

  Since the specific signal line 16b in the charge / discharge cable 16 is connected to a 12V control power supply (not shown) in the electric vehicle 2, the power supply circuit 12 is connected to the 12V signal through the specific signal line 16b in the charge / discharge cable 16. DC power can be extracted from the electric vehicle 2. When the inside of the housing 11 is at a low temperature, the function of the starting battery 21 inside the housing 11 is lowered, and there is a possibility that a voltage drop occurs in the DC power supplied from the starting battery 18 to the power supply circuit 12. . However, since the starting battery 18 and the specific signal line 16b are connected in parallel to the power supply circuit 12, even if a voltage drop occurs in the DC power supplied from the starting battery 18 to the power supply circuit 12, This can be supplemented by DC power of 12V supplied from the electric vehicle 2 through the specific signal line 16b. Therefore, DC power having a specified voltage can be supplied to the power supply circuit 12. Thereby, the power supply circuit 12 can start the charging / discharging apparatus 1H.

[Embodiment 10]
With reference to FIG. 11, Embodiment 9 which concerns on this invention is demonstrated below. FIG. 11 is a diagram showing a configuration of a charge / discharge device 1I according to the tenth embodiment of the present invention. As shown in this figure, the charging / discharging device 1I includes a casing 11, a power supply circuit 12, a control circuit 13, a transformer 14, a charging / discharging circuit 15, a charging / discharging cable 16, a starting battery 21, a power line 22, a power line 23, and A diode 24 is provided.

  In the charging / discharging device 1I, unlike the charging / discharging device 1 of the first embodiment, the activation battery 18 is not disposed outside the housing 11 (inside the building 3). Instead, a startup battery 21 is arranged inside the housing 11. The starting battery 21 is connected to the power supply circuit 12 via a power line 22 inside the housing 11.

  The electric vehicle 2 includes a cigar socket 25. As shown in FIG. 11, in the charging / discharging device 1 </ b> I, the starting battery 21 and the cigar socket 25 are connected in parallel to the power supply circuit 12. The cigar socket 25 is connected to the power circuit 12 via a power line 23 that connects the power circuit 12 and the charge / discharge cable 16. The power line 23 is provided with a diode 24 that allows current to flow only to the power supply circuit 12 side. Thereby, current backflow from the charge / discharge circuit 15 to the cigar socket 25 can be prevented.

  Since the cigar socket 25 is connected to a 12 V control power supply (not shown) in the electric vehicle 2, the power supply circuit 12 can extract 12 V DC power from the electric vehicle 2 through the cigar socket 25. When the inside of the housing 11 is at a low temperature, the function of the starting battery 21 inside the housing 11 is lowered, and there is a possibility that a voltage drop occurs in the DC power supplied from the starting battery 18 to the power supply circuit 12. . However, since the starting battery 18 and the cigar socket 25 are connected in parallel to the power circuit 12, even if a voltage drop occurs in the DC power supplied from the starting battery 18 to the power circuit 12, the cigar socket This can be supplemented by 12V DC power supplied from the electric vehicle 2 via the electric vehicle 25. Therefore, DC power having a specified voltage can be supplied to the power supply circuit 12. Thereby, the power supply circuit 12 can start the charging / discharging device 1I.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. Embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. A new technical feature can also be formed by combining the technical means disclosed in each embodiment.

1-1I Charging / discharging device 2 Electric vehicle 3 Building 4 Commercial power system 11 Housing 12 Power supply circuit (starting circuit)
13 Control Circuit 14 Transformer 15 Charge / Discharge Circuit 16 Charge / Discharge Cable (Cable)
16a, 17, 22, 23 Power line 16b Signal line 18 Start-up battery 19 Dry cell (start-up battery)
20 High voltage battery (startup battery)
21 Start-up battery (internal start-up battery)
24 Diode 25 Cigar socket 26 Start-up battery 31 Distribution board 32 Load

Claims (16)

In a charging / discharging device that performs a charging operation for charging a storage battery for driving provided in an automobile with electric power from a system power supply, and a self-sustaining operation for taking out the electric power stored in the storage battery and supplying it to another load,
Charge / discharge that converts AC power from the system power supply to DC power during the charging operation and supplies it to the storage battery, and converts DC power from the storage battery to AC power during the independent operation and supplies it to the other load Circuit,
A control circuit for controlling the charge / discharge circuit,
When a power failure occurs in the system power supply, the control power supply for obtaining the control power supplied to the charge / discharge circuit and the control circuit is switched to backup by a battery, and when the independent operation is started, the battery is taken out from the storage battery. Switch to use power as the control power source ,
The self-sustaining operation can be determined after the switching to the backup, the charge / discharge device is disconnected from the system power supply, and is started on the condition that the operation for starting the self-sustaining operation has been performed,
If the above determination cannot be made even after a certain time has elapsed since switching to the backup, or if the start operation is not performed, the supply of the control power is turned off, and then the power is turned on by the user. The charging / discharging device is activated using a battery, and after the activation, it can be determined that the charging / discharging device is disconnected from the system power supply, and the autonomous operation is performed on the condition that the operation for starting the autonomous operation is performed. The charging / discharging apparatus characterized by starting .   The charging / discharging device according to claim 1, wherein the battery is a starting battery that is also used to start the charging / discharging circuit and the control circuit when a power failure occurs in the system power supply.   3. The charging / discharging device according to claim 1, wherein when a power failure occurs in the system power supply, the user is notified that the power failure has occurred.   The charging / discharging device according to any one of claims 1 to 3, wherein when a power failure occurs in the system power supply, the operation performed at that time is stopped.   5. The charging / discharging device according to claim 1, wherein when a power failure occurs in the system power supply, the self-sustained operation is started after a start operation of the self-sustained operation by a user. A housing for storing the internal components of the charge / discharge device;
The battery is rechargeable device according to any one of claims 1 to 5, characterized in that arranged outside of the housing. The charging / discharging device according to claim 6 , wherein the battery is arranged in a building. Rechargeable device according to claim 6 or 7, further comprising a power supply circuit for supplying control power to the charging and discharging circuit and the control circuit. The charge / discharge device according to claim 8 , wherein the power supply circuit is disposed outside the housing. The battery is rechargeable device according to any one of claims 1 to 9, characterized in that it is a dry cell. The power supply circuit is disposed inside the housing,
9. The charging / discharging device according to claim 8 , wherein the power supply circuit is supplied with electric power having a voltage higher than a specified voltage for the power supply circuit to activate the charging / discharging device from the battery. The battery further includes an internal startup battery disposed inside the housing,
The charging / discharging device according to claim 8 , wherein the battery and the internal starting battery are connected in parallel to the power supply circuit. And the battery is in the cable for charging and discharging the car, according to claim 8 in which the wiring and connected to the control power source of the motor vehicle, characterized in that it is connected in parallel to the power supply circuit The charge / discharge device according to 1. The charge / discharge device according to claim 8 , wherein the battery and a cigar socket of the automobile are connected in parallel to the power supply circuit. The battery supplies DC power to the power supply circuit,
The charging / discharging device according to claim 8 , further comprising a power line for supplying the DC power from the battery to the power supply circuit. The charging / discharging device according to claim 8 , wherein the battery supplies AC power to the power supply circuit.

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