JP2008042998A - Dc power distribution system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a DC power distribution system enabling to easily increase and decrease a power supply capacity, preventing a DC system equipment unit from being exposed in a room to contribute to the beautiful appearance of the room and simplifying its installation. <P>SOLUTION: An electrical distribution panel 1 has a DC system equipment unit incorporated in its body 1a, such as a power conversion section 5 for converting commercial AC power into DC power, a conductive bar 8 to be connected to a DC output side of the power conversion section 5, and communication equipment units 6a, 6b connected to the conductive bar 8 and supplied with power. The board 1 also has an incorporated battery unit B comprising storage modules 9 for supplying backup power to the DC system equipment units via the conductive bar 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power conversion unit that converts commercial AC power into DC power for a DC system unit arranged as an internal unit in a distribution board, and a DC power distribution system that supplies DC power from a battery unit.

  In order to branch and wire the power lines drawn from the outdoors, a main breaker and a distribution board equipped with a branch breaker are installed in houses and the like.

  The distribution boards installed in these houses are generally used for power distribution for commercial AC power supplies. However, distribution boards with equipment that obtains DC power and supplies power to DC loads as internal units are also available. Provided (for example, Patent Document 1).

The DC power supply device provided in the distribution board of Patent Document 1 incorporates a circuit unit such as an AC / DC converter and a power storage unit such as a storage battery in a casing having the same form as a branch breaker. A power supply connection section for connecting to a commercial AC power supply through a conductive bar for power lines in the same manner as a breaker, and a power output terminal section for supplying AC / DC converted DC power and DC power of a power storage section to an external DC load It is the composition provided with.
Japanese Patent Laying-Open No. 2005-224066 (FIG. 6, paragraph 0028)

  By the way, in recent years, the use of devices that require DC power, such as communication devices and LED lighting devices, has increased. In addition, a device using an external power supply unit such as an AC adapter connected to a power outlet is increasing without incorporating a power supply unit for obtaining a direct current like a conventional large electric device. For this reason, there are cases where the power outlet and the surroundings become complicated due to the direct connection of the AC adapter or the connection line for connecting to the device from the AC adapter. Therefore, there is a demand for a system for direct current distribution using a distribution board or the like that can be organized in the same manner as the wiring of an indoor power line.

  Therefore, it is conceivable to use a configuration in which a power supply device as disclosed in Patent Document 1 is arranged as an internal unit on a distribution board. However, the power supply device described in Patent Document 1 has a single DC load ( Since the AC / DC converter is built in the form corresponding to the DC system unit), there is a problem that the power conversion efficiency is poor.

  Further, since the power storage unit is provided corresponding to each DC system unit, there is a problem that the cost is increased. Furthermore, since the power storage device is built in the power supply device together with the AC / DC converter, there is a problem that the size of the power supply device is increased when a large capacity power supply device is to be manufactured.

  Furthermore, when a plurality of DC system units are associated with one power supply device, for example, when used in a home wiring system in which system expansion changes are frequently performed, the power supply capacity needs to be variable. However, it cannot be handled by a storage battery built-in device such as the power supply device disclosed in Patent Document 1. In addition, since the capacity of the storage battery is limited, it is difficult to continuously provide a stable power supply during a power failure or the like.

  The present invention has been made in view of the above points, and its purpose is to easily increase / decrease the power capacity, and not to expose the DC system unit to the room, which can contribute to the indoor aesthetics, In addition, it is to provide a DC power distribution system that can simplify the construction.

  In order to achieve the above object, according to the first aspect of the present invention, a power converter that converts commercial AC power into DC power, a DC power supply path that is connected to the DC output side of the power converter, and the DC power supply A distribution board having a DC system unit connected to a power line and fed with power, and one or a plurality of storage battery modules for supplying backup power to the DC system unit via the DC power supply path. And a battery unit built in.

  According to the invention of claim 1, by installing the DC system unit in the distribution board, since the installation of the DC system unit can be performed simultaneously with the installation of the distribution board, the installation can be simplified, Since the DC system unit is housed in the distribution board, the DC system unit is not exposed to the room, and the power supply unit or backup battery unit can supply power to the internal DC system unit in a batch. This eliminates the need for a built-in power supply for each DC system unit, or eliminates the need for an AC adapter, reducing the cost of the DC system unit, and eliminating the need for connection to a power outlet. The complexity of the surroundings is eliminated, which can contribute to the improvement of the indoor aesthetics, and the number of storage battery modules is increased with the increase and decrease of the DC system unit. This makes it possible to vary the capacity of the battery unit, so that it can be adapted to a home wiring system in which system expansion changes are frequently made and the capacity of the battery unit can be increased. However, stable backup power supply can be performed, and backup power supply can be directly performed via a DC power supply path without using an inverter device or the like.

  According to a second aspect of the present invention, in the first aspect of the invention, the main body is a main body of the distribution board, the battery unit is built in the main body, and the storage battery module is connected to the DC power supply path. It is characterized by that.

  According to the invention of claim 2, since the battery unit is also housed in the distribution board, the connection wiring of the battery unit can be performed in the distribution board and the battery unit is not exposed to the outside. In addition, the storage battery module can be charged simultaneously with the power supply to the DC system unit by the DC power of the power converter.

  According to a third aspect of the invention, in the first aspect of the invention, the main body is a main body of the distribution board, the battery unit is built in the main body, and AC / DC conversion means in the power conversion unit is provided. The storage battery module is connected to a connection electric path with the DC / DC conversion means.

  According to the third aspect of the present invention, the battery unit can be charged in the distribution board by charging the power storage module of the battery unit in the distribution board, and the battery unit can be connected to the outside. Because it is not exposed, the distribution board can be neatly arranged, and the battery module can be charged with the DC output of the AC / DC conversion means of the power converter, and the DC power of the battery unit can be fed to the DC system unit. Since the voltage at the time of conversion can be converted into a predetermined voltage by the DC / DC conversion means, the output voltage of the storage battery module to be used may not be the voltage at the time of supplying power to the DC system unit.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the battery unit includes one or more storage battery modules in a storage space provided in a main body of a battery unit panel separately from the distribution board. In addition, the storage battery module is connected to a conductive member disposed in the main body, and a battery electrode connected to the conductive member is connected to an AC / DC conversion unit and a DC / DC conversion unit in the power conversion unit. It connects to the connection electric circuit of the above, or the said DC power supply path, It is characterized by the above-mentioned.

  According to the invention of claim 4, since the battery unit is configured by incorporating the storage battery module in a panel installed separately from the distribution board, the capacity can be changed as compared with the case where the battery unit is installed in the distribution board. Since it is easy to perform and has a panel configuration, it can be balanced in appearance even if it is placed in parallel with the distribution board, and the battery module can be charged by the power conversion unit in the distribution board, When connecting to the connection circuit between the AC / DC conversion unit and the DC / DC conversion unit in the power conversion unit, the voltage when the DC power of the battery unit is supplied to the DC system unit is supplied by the DC / DC conversion unit. Since it can convert into a predetermined voltage, the output voltage of the storage battery module to be used may not be the voltage at the time of supplying electric power to the DC system unit.

  According to a fifth aspect of the invention, according to the fourth aspect of the invention, the storage battery module and the conductive member are provided with a plug-in connecting portion that is electrically and mechanically connected to and away from each other.

  According to the invention of claim 5, connection and removal of the storage battery module can be easily performed, so that it can be easily changed corresponding to the increase / decrease of the DC system unit using the capacity of the battery unit.

  In the invention of claim 6, in the invention of claim 4 or 5, the length of the storage battery module is set to a constant length, and the width of the storage battery module orthogonal to the interior direction of the storage battery module. It is characterized by the direction.

  According to the sixth aspect of the present invention, when a plurality of storage battery modules are arranged side by side, the storage battery modules can be regularly arranged in a horizontal row with the dimensions in both end directions aligned.

  In the present invention, since the DC system unit is installed in the distribution board, the DC system unit can be installed and installed at the same time as the installation of the distribution panel. Since the DC system unit is not exposed to the room because it is housed in the distribution board, and it can be fed collectively from the power conversion unit or backup battery unit to the internal DC system unit, the individual DC system There is no need to incorporate a power supply unit in the device unit, or the cost of the DC system unit can be reduced by eliminating the need for an AC adapter. In addition, connection to a power outlet is unnecessary and the complexity around the power outlet is eliminated. By increasing the number of storage battery modules with respect to increase / decrease of DC system unit The capacity of the battery unit can be changed, so that it can be adapted to the in-home wiring system where the system expansion and change etc. are frequently performed, and the capacity of the battery unit can be increased, so it is stable even during power outages Backup power supply can be performed, and backup power supply can be directly performed via a DC power supply path without using an inverter device or the like.

  Embodiments of the present invention will be described below.

(Embodiment 1)
FIG. 1 shows a schematic system diagram of the first embodiment. As shown in the figure, the present embodiment divides the main body 1a of the distribution board 1 into left and right parts, and the left side in the figure is the limiter 2, the main breaker 3, and the like. Further, a space for installing a commercial AC power system internal unit such as a branch breaker 4 is provided, and a power conversion unit 5, various DC system unit 6 (6 a, 6 b...) Described later, a battery unit B, and the like are disposed on the right side. Space.

  Here, for example, a single-phase three-wire commercial AC power line drawn into the main body 1 a of the distribution board 1 is connected to the main breaker 3 via the limiter 2, and L 1 and L 2 on the load side of the main breaker 3. , N is connected to one end of a conductive bar 7 at each of the terminals corresponding to each of the N poles, and the plug-in power source side of each branch breaker 4 is connected to the N pole conductive bar 7 and the L1 or L2 conductive bar 7 A terminal portion (not shown) is connected, and the indoor power line is branched by each branch breaker 4.

  As the configuration of the plug-in type power supply connection portion of the branch breaker 4, a well-known configuration such as the power supply connection portion of the branch breaker described in Patent Document 1 described above may be used, and illustration and description of this configuration are omitted. . Further, since the conductive bars 7 are arranged so as to overlap each other when viewed from the front direction of the main body 1a, they are visible in FIG.

  The power conversion unit 5 connects the end of the conductive bar 7 of each pole to a commercial AC power connection terminal (not shown) provided on the left side in the figure, and connects the positive and negative poles provided on the right side. One end of the conductive bar 8 for the DC power supply path is connected to a corresponding DC power output terminal portion (not shown). Here, the positive and negative poles of the DC power supply path conductive bar 8 are arranged so as to overlap each other when viewed from the front, and thus are visible in FIG.

  Now, various DC system units 6 (6a, 6b...) Are arranged on the upper and lower sides of the conductive bar 8, and storage battery modules 9 of the battery unit B are arranged. Various DC system units 6 are arranged. (6a, 6b...) Are inserted into the plug-in terminal portion 10 (see FIG. 2) provided at the end on the conductive bar 9 side, and the contact piece 10a in the plug-in terminal portion 10 is replaced with the conductive bar 8. It is designed to connect freely.

  On the other hand, each storage battery module 9 of the battery unit 9 is provided with a plug-in type plug-in terminal portion (not shown) similar to the plug-in terminal portion 10 at the end corresponding to the positive and negative electrodes. The DC power of the storage battery module 9 can be supplied to the conductive bar 8 by the terminal portion. The battery unit B can increase or decrease the overall capacity by increasing or decreasing the number of storage battery modules 9 used.

  Here, the DC system unit 6 (6a, 6b...) And the both ends of each storage battery module 9 in the direction orthogonal to the conductive bar 8 are made constant so that the DC system unit 6 (6a, 6b. When the storage battery modules 9 are arranged side by side, the positions in the both end directions are aligned. The width dimension of the storage battery module 9 varies depending on the capacity.

   FIG. 3 is a circuit diagram showing the connection relationship between the power conversion unit 5 of this embodiment and the power storage module 9 of the battery unit B. As shown in the figure, the power conversion unit 5 is a single-phase three-wire of L1, N, and L2. A rectifier circuit 5A that is an AC / DC converter by inputting a commercial AC power source, and a DC / DC converter 5B that is a DC / DC converter that steps down a predetermined DC voltage obtained by the rectifier circuit 5A to a predetermined voltage. And a voltage detection circuit 5C for detecting the voltage of the commercial AC power supply from the voltage across the resistor R1 connected from the rectifier circuit 5A to the output terminal, and the commercial AC power supply voltage detected by the voltage detection circuit 5C is a predetermined voltage (for example, during a power failure) The control part 5E which sends out a control signal to each storage battery module 9 via the communication part 5D is provided.

  On the other hand, each storage battery module 9 constituting the battery unit B includes a secondary battery group 9A, a switch circuit 9B interposed between the positive and negative electrodes of the secondary battery group 9A and the above-described plug-in terminal portion, and communication. A communication unit 9C that receives the control signal sent from the unit 5D, and a battery control unit 9D that turns on the switch circuit 9B when the control unit 9B receives the control signal. The positive electrode is connected to the positive electrode output terminal of the power converter 5 via a diode D for backflow prevention with a cable or the like. The switch circuit 9B turns on / off the positive electrode side and passes through the negative electrode side for charging. In addition, the operation power source of the circuit in the storage battery module 9 is obtained from the secondary battery group 9A.

  Thus, the power converter 5 normally rectifies the commercial AC power source with the rectifier circuit 5A, further reduces the DC voltage as the rectified output to a predetermined DC voltage with the DC / DC converter 5B, and reduces the DC voltage thus reduced. Is applied to the conductive bar 8 to supply DC power to the DC system unit 6 (6a, 6b...) And to charge the secondary battery group 9A of each storage battery module 9 of the battery unit B.

  In addition, when the voltage detection circuit 5C detects that the commercial AC power supply voltage has dropped to a predetermined voltage or less due to a power failure or the like, the power conversion unit 5 sends control signals to the control signals through the communication unit 5D under the control of the control unit 5E. While sending to the storage battery module 9, the operation | movement of DC / DC converter 5B is stopped.

  On the other hand, in each storage battery module 9, when the control signal from the power conversion unit 5 is received by the communication unit 9C, the battery control unit 9B turns on the switch circuit 9B based on the control signal, so that the secondary battery group 9A is connected to the conductive bar 8. , 8 and backup power is supplied to the DC system unit 6 (6a, 6b...) With the DC power of the secondary battery group 9A.

  As shown in FIG. 4, a power sensor includes a current sensor 5F that detects an input current and a current monitoring unit 5G that detects whether or not the input current detected by the current sensor 5F is greater than or equal to a preset threshold value. When the current monitoring unit 5G detects that the input current is equal to or greater than the threshold value, the control signal is sent from the communication unit 5D to the storage battery module 9 under the control of the control unit 5E. Similarly, DC power supply by the storage battery module 9 may be performed. In this case, the operation of the DC / DC converter 5B is continued, and the storage battery module 9 supplements the DC power supply by the power converter 5. The operation at the time of a power failure is the same as that of the circuit of FIG.

  Here, the DC system unit 6 used in the present embodiment will be described. The DC system unit 6 is divided into an information system unit, which will be described later, responsible for information communication, and a DC wiring connection terminal unit 6e for feeding and supplying DC power supplied through the conductive bar 8 to an external DC device. In FIG. 1, as an information system unit, a WAN communication device unit 6a such as a gateway connected to a network to the Internet or the like, a LAN communication device unit 6b, and an LED lighting terminal 11 installed outside are adjusted together with lighting power. There is a controller unit 6c that sends a control signal for light control, a security unit installed outside, a sensor unit 6d that sends operation power to the sensor 12 such as a disaster prevention sensor and receives a detection signal from the sensor 12.

  For example, there is a built-in communication function in which information is exchanged between the communication device units 6a and 6b and the controller unit 6c and sensor unit 6d by superimposing signals on the DC voltage of the conductive bar 8, and provided on the LAN. The dimming operation signal is sent from the operation display unit 13 through the LAN communication device unit 6b to the controller unit 6c, and the LED lighting terminal 11 is dimmed, or the controller unit 6c performs operation display through the LAN communication device unit 6b. The dimming state information is sent to the unit 13 to display the dimming state, or the detection information of the sensor unit 6d is further sent to the operation display unit 13 via the communication device unit 6b, and the operation display unit 13 displays the detection information. Can be done.

  Further, as the DC power supply wiring terminal unit 6e, a feeding line 15 is connected to an external terminal device 14 from a terminal portion 16 formed of a quick connection terminal provided with DC power input from the plug-in terminal portion 10 through the conductive bar 8 on the front surface. Power is supplied through the cable.

  In the present embodiment configured as described above, the power system equipment and the DC system equipment unit 6 are provided in the main body 1a of one distribution board 1 so that the installation of the DC system equipment unit 6 can be divided. It can be done at the same time as the installation of the panel 1, simplifies the installation of the DC system unit 6, and the DC system unit 6 is not exposed to the room, which is advantageous for indoor aesthetics, and the power provided in the distribution panel 1 Since the conversion unit 5 can supply power to the DC system unit 6 all at once, it is not necessary to use an AC adapter for each DC system unit or to provide a built-in power supply, and the cost of the DC system unit can be reduced. In addition, the complexity around the power outlet can be eliminated, and the capacity of the backup battery unit B can be changed simply by changing the number of storage battery modules 9 used. Door can be.

(Embodiment 2)
In the above-described first embodiment, the storage battery module 9 constituting the battery unit B is directly connected to the conductive bar 8 in the same manner as the DC system unit 6, thereby being disposed in the main body 1 of the distribution board 1 and the storage battery. Although the module 9 is directly connected to the conductive bar 9 to supply power, this embodiment is the same in that the battery unit B is housed in the main body 1a of the distribution board 1, but is shown in FIG. As described above, the battery unit B is connected to the power conversion unit 5 so that the DC power of the battery unit B can be back-up fed to the conductive bar 8 through the power conversion unit 5. In FIG. 5, the same components as those of the first embodiment other than the above-described configuration are denoted by the same reference numerals, and the description thereof is omitted.

  The battery unit B has basically the same configuration as the storage battery module 9 of the first embodiment as shown in FIG. 6, for example, but the capacity can be increased or decreased by increasing or decreasing the number of secondary battery groups 9A. It has become. The positive and negative electrodes of the storage battery module 90 including the secondary battery group 9A are connected in parallel to the electric circuit between the rectifier circuit 5A in the power converter 5 and the DC / DC converter 5B via the switch circuit 9B. In this configuration, the positive electrode of the rectifier circuit 5A and the positive electrode of the storage battery module 90 are connected via a diode D.

  On the other hand, the configuration of the power converter 5 is the same as the configuration of FIG. 4 except that the current sensor 5F is inserted at a position closer to the rectifier circuit 5A than the connection position of the battery unit B described above.

  Therefore, in the battery unit B in the present embodiment, the switch circuit 9B is normally off and the DC power from the storage battery module 90 is not input to the DC / DC converter 5B, but from the rectifier circuit 5A via the diode D. Then, the storage battery module 90 is charged by supplying power to the storage battery module 90. When the commercial power supply voltage drops due to a power failure or the like, the switch circuit 9B is turned on under the control of the battery control unit 9D based on the control signal from the power conversion unit 5 as in the first embodiment, and the rectifier circuit 5A and the DC / DC The voltage of the storage battery module 90 is applied to the electric circuit of the DC converter 5B. As a result, the detection voltage of the voltage detection circuit 5C increases.

  On the other hand, in the current sensor 5F provided on the output side of the rectifier circuit 5A, the current from the rectifier circuit 5A does not flow, so the current monitoring unit 5G does not output the detection output to the control unit 5E because the input current does not exceed the threshold value. . Therefore, the control unit 5E maintains transmission of the control signal to the battery unit B. Therefore, the ON state of the switch circuit 9B is maintained even when the detection voltage increases as described above. On the other hand, the control unit 5E controls the voltage detection circuit 5C to maintain the operation of the DC / DC converter 5B in order to detect the voltage. As a result, the storage battery module 90 of the battery unit B supplies DC power to the conductive bar 8 at a voltage stepped down to a predetermined voltage by the DC / DC converter 5B.

  When the input current increases during normal operation, the circuit operates in the same manner as the circuit of FIG. When the commercial AC power supply is restored from a power failure, when the current flows from the rectifier circuit 5A and the detection signal is input from the current sensor 5F to the control unit 5E via the current monitoring unit 5G, the control unit 5E is connected to the battery unit B. The transmission of the control signal is stopped, the switch circuit 9B of the battery unit B is turned off, the power supply from the storage battery module 90 is stopped, and charging by the output of the rectifier circuit 5A is started.

  Thus, in this embodiment, although the connection configuration of the battery unit B is different from that of the first embodiment, the point that it is built in the main body 1a of the distribution board 1 is the same as that of the first embodiment. There are similar advantages.

(Embodiment 3)
In both of the first and second embodiments, the battery unit B is built in the main body 1a of the distribution board 1, but in this embodiment, as shown in FIG. The battery unit B, which is configured by detachably mounting one or a plurality of storage battery modules 101 in the main body 100a of the battery unit panel 100, is characterized in that it is configured separately from the distribution board 1. The battery unit B separately from the distribution board 1 is connected in the power conversion unit 5 using the connection cable 102. In this connection cable 102, positive and negative battery electrode terminals in which storage battery modules 101 are connected in parallel are connected between the rectifier circuit 5A of the power converter 5 and the DC / DC converter 5B in the same manner as in the second embodiment. It consists of a connection line to be connected, a communication line for connecting the communication units 9C and 5D, and a charging line for connecting the positive side output of the rectifier circuit 5A to the positive electrode via the diode D. The positive and negative battery electrode terminals may be connected to the conductive bars 8 and 8. In FIG. 7, the same components as those of the first embodiment other than the configuration described above are denoted by the same reference numerals, and description thereof is omitted.

  Here, as shown in FIG. 8A, the battery storage panel 100 has a space for storing a plurality of storage battery modules 101 in the main body 100a, and the storage battery module is mounted on the lid body 100b attached to the front opening of the main body 100a. An opening window 100c is provided to allow the front protrusion 101a (see FIG. 8D) of 101 to face. Further, as shown in FIG. 8B, the positive and negative conductive bars 103a and 103b are arranged in parallel at a predetermined interval on the inner back of the main body 100a so as to overlap when viewed from the front. . Both ends of the conductive bars 103a and 103b are fixed to the back portion of the main body 100a through the insulator 104 as shown in FIG. 8C, and are held so that the distance between them is constant. As shown in FIG. 8D, plug-in connection portions 105a and 105b having positive and negative contact pieces 106a and 106b are provided at the ends of the storage battery modules 101 so as to correspond to the conductive bars 103a and 103b. The storage battery module 101 is connected to the conductive bars 103a and 103b by inserting the conductive bars 103a and 103b into the plug-in connection portions 105a and 105b and sandwiching the conductive bars 103a and 103b with the internal connection pieces 106a and 106b, respectively. It is designed to be electrically connected to the door. Thereby, one or a plurality of storage battery modules 101 can be connected in parallel via the conductive bars 103a and 103b, and the capacity of the battery unit B having a variable capacity is configured by adjusting the number of storage battery modules 101 to be connected. Can be done.

  As shown in FIG. 9A, the conductive bars 103a and 103b are arranged in parallel vertically on the inner back of the main body 100a, and the connecting pieces 107a and 107b, which are paired with each other, are connected as shown in FIG. A pair of terminal holes 108a and 108b for inserting connection pieces 107a and 107b are formed on the back surface of the storage battery module 101, as shown in FIG. 9C, and connected to the terminal holes 108a and 108b. By inserting the pieces 107a and 107b and sandwiching the connection pieces 107a and 107b with the contact pieces 109 in the terminal holes 108a and 108b as shown in FIG. 9D, the storage battery module 101 can be contacted and separated from the conductive bars 103a and 103b. You may make it connect electrically. Here, the terminal holes 108a and 108b and the contact piece 109 constitute a plug-in connection portion.

  Thus, in this embodiment, in addition to the same advantages as those of the first and second embodiments, a battery unit B having a panel shape is juxtaposed with the distribution board 1 to convert power in the battery unit B and the distribution board 1. By connecting the circuit of the unit 5 with the connection cable 102, a DC power distribution system capable of large capacity backup can be constructed. For example, by using the battery unit B in which the number of the storage battery modules 101 is adjusted corresponding to the increase / decrease of the DC system unit 6, a backup power source with an appropriate capacity for the load can be secured.

  In addition, as shown in FIG. 10, the integrated unit 110 which collects the charging / discharging information of the storage battery module 101 and the storage battery module 101 is incorporated in the main body 100a, and the display unit 110a for information display provided on the front surface of the integrated unit 110 is a lid 100b. You may make it display so that the charging / discharging information of the storage battery module 101 can be visually recognized from the outside by exposing from the opening window 100b.

1 is a schematic system configuration diagram of Embodiment 1. FIG. It is a side view of the principal part which abbreviate | omitted one part fracture | rupture which shows the connection structure of the direct-current system unit of Embodiment 1, and an electroconductive bar. 3 is a circuit diagram illustrating a connection relationship between a power conversion unit and a power storage module according to Embodiment 1. FIG. 6 is a circuit diagram illustrating a connection relationship between a power conversion unit and a power storage module according to another example of Embodiment 1. FIG. 6 is a schematic system configuration diagram of Embodiment 2. FIG. It is a circuit diagram which shows the connection relation of the power converter of Embodiment 2, and a battery unit. FIG. 6 is a schematic system configuration diagram of a third embodiment. (A) is a perspective view of a battery unit used in the third embodiment, (b) is an explanatory view of an attached state of a power storage module constituting the battery unit, and (c) is a part of a main portion of a conductive bar connecting the power storage module. FIG. 4D is an enlarged perspective view of the power storage module. (A) Arrangement block diagram of the conductive bar in another example of the battery unit used in Embodiment 3, (b) is an enlarged perspective view in which a part of the conductive bar is omitted, (c) is an enlarged perspective view of the power storage module, d) is a partially omitted enlarged cross-sectional view showing the connection state of the power storage module and the conductive bar, It is a perspective view of the other example of the battery unit used for Embodiment 3. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Distribution board 1a Main body 2 Limiter 3 Main breaker 4 Branch breaker 5 Power conversion part 6a, 6b Communication equipment unit 6c Controller unit 6d Sensor unit 6e DC wiring connection terminal unit 7, 8 Conductive bar 9 Power storage module 11 LED lighting terminal 12 Sensor 13 Operation display unit 14 Terminal device 15 Feed line 16 Terminal section
B Battery unit

Claims (6)

A power conversion unit that converts commercial AC power into DC power, a DC power supply path that is connected to the DC output side of the power conversion unit, and a DC system unit that is connected to the DC power supply path and is fed Distribution board,
A DC power distribution system comprising: a battery unit in which one or a plurality of storage battery modules that perform backup power supply to the DC system unit via the DC power supply path are housed in a panel-shaped main body. 2. The DC power distribution system according to claim 1, wherein the main body is a main body of the distribution board, and the battery unit is built in the main body, and the storage battery module is connected to the DC power supply path. The main body is a main body of the distribution board, the battery unit is built in the main body, and the storage battery module is connected to a connection circuit between the AC / DC conversion means and the DC / DC conversion means in the power conversion unit. The DC power distribution system according to claim 1, wherein: The battery unit includes one or a plurality of storage battery modules in a storage space provided in a main body of a battery unit panel that is provided separately from the distribution board, and the storage battery is disposed on a conductive member disposed in the main body. A battery electrode configured by connecting modules and connected to the conductive member is connected to a connection circuit between the AC / DC conversion unit and the DC / DC conversion unit in the power conversion unit or the DC power supply path. The DC power distribution system according to claim 1. 5. The DC power distribution system according to claim 4, wherein the storage battery module and the conductive member are provided with plug-in connection portions that are electrically and mechanically connected to each other so as to be able to contact and separate from each other. 6. The direct current according to claim 4, wherein the length dimension of both ends of the storage battery module is a constant length, and the interior direction of the storage battery module is a width direction of the storage battery module orthogonal to the both ends. Power distribution system.

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