Switching device for portable battery storage

Abstract

This invention provides a portable battery switch device that has a simple structure and can be safely installed. [Solution] The first selection terminal 111 of the main switch 11 of the switch device 1 is connected to the distribution board 8 and the battery input terminal 101, the second selection terminal 112 is connected to the battery output terminal 102 by the battery output line 13, and the common terminal 113 is connected to the load 9. The lever 114 of the main switch 11 can take on a first state in which the common terminal 113 is short-circuited to the first selection terminal 111 and the second selection terminal 112 is opened, a second state in which the common terminal 113 is short-circuited to the second selection terminal 112 and the first selection terminal 111 is opened, and a third state in which the common terminal 113 is opened from both the first selection terminal 111 and the second selection terminal 112.

Description

Technical Field

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[0004] ,

[0001] The invention of the present application relates to a technology for taking countermeasures against power outages that may be caused by large-scale disasters.

Background Art

[0002] In recent years, cases where regional lifelines have suffered serious damage due to natural disasters such as large earthquakes and floods have occurred frequently, and it has become an urgent task to make comprehensive countermeasures. In particular, the number of cases where large-scale power outages occur due to damage to power plants and damage to the power transmission and distribution network has been increasing, and the importance of countermeasures against them has been emphasized. When a power outage due to a disaster occurs, although there are few cases that require a long time to restore, it often takes several days. During that time, an inconvenient life without electricity is inevitable. In many cases, people take refuge in shelters equipped with emergency power supply equipment, but they often hesitate from the perspective of privacy and end up staying at home without electricity.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

[0005] The above points also apply to non-residential buildings, and there is a desire for low-cost and easy power outage countermeasures. Considering these challenges, the applicant of this application has filed Patent Document 2 and Patent Document 3, disclosing power outage countermeasures technology using portable storage batteries. The present invention is based on the technologies disclosed in Patent Documents 2 and 3, and aims to provide a portable battery switch device that has a simple structure and can be safely installed. [Means for solving the problem]

[0006] To solve the above problems, this specification discloses various inventions for a switch device for a portable storage battery. The portable battery switch device according to the disclosed invention is a switch device used when installing a portable battery by interposing it between a distribution board and a load to which power is supplied from the grid transmission and distribution network by the distribution board, Switch box and The main input terminal connected to the distribution board, Load terminals connected to the load, A battery input terminal that connects to the input terminal of a portable battery, Battery output terminal connected to the output terminal of the portable battery, The main switch located in the switch box and It is equipped with. The main switch is equipped with a first selection terminal, a second selection terminal, a common terminal, and a lever. The first selection terminal of the main switch is the terminal connected to the distribution board, and the common terminal of the main switch is the terminal connected to the load. Furthermore, in this portable battery switch device, a battery output line is provided, which is connected to the battery output terminal by connecting the second selection terminal of the main switch, and a battery input line is provided, which is connected to the battery input terminal by connecting the first selection terminal of the main switch. In this portable battery switch device, the lever can take on a first state in which the common terminal is short-circuited to the first selectable terminal and left open from the second selectable terminal, a second state in which the common terminal is short-circuited to the second selectable terminal and left open from the first selectable terminal, and a third state in which the common terminal is left open from both the first and second selectable terminals. Furthermore, in order to solve the above problems, the disclosed switch device for portable storage batteries is The main input terminal is the first selectable terminal of the main switch, and the other end of the input cable, one end of which is connected to the distribution board, is connected to the first selectable terminal. It can have this kind of structure. Furthermore, in order to solve the above problems, in the disclosed switch device for portable storage batteries, One end of the battery input line can be connected to the first select terminal of the main switch, with the other end of the input cable superimposed on it. Furthermore, in order to solve the above problems, the disclosed switch device for portable storage batteries is The load terminal is the common terminal of the main switch, and the other end of the output cable, one end of which is connected to the load, is connected to the common terminal. It can have this kind of structure. [Effects of the Invention]

[0007] As described below, according to the switch device for a portable battery according to the disclosed invention, since the main switch can hold a third state in which the common terminal is released from both the first selection terminal and the second selection terminal, the safety during construction is enhanced.

Brief Description of Drawings

[0008] [Figure 1] It is a schematic diagram of a power outage countermeasure set including the switch device for a portable battery of the embodiment. [Figure 2] It is a perspective schematic diagram of the switch device for a portable battery of the embodiment. [Figure 3] It is a perspective schematic diagram of the switch device for a portable battery of the embodiment. [Figure 4] It is a front schematic diagram showing the structure of the main switch. [Figure 5] It is a front schematic diagram showing the structure of the main switch. [Figure 6] It is a perspective schematic diagram of the switch device for a portable battery in which the main switch is in the first state. [Figure 7] It is a perspective schematic diagram of the switch device for a portable battery in which the main switch is in the second state. [Figure 8] It is a schematic diagram showing the switch operation when removing the portable battery in the embodiment.

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments of the disclosed invention will be described. FIG. 1 is a schematic diagram of a power outage countermeasure set including the switch device for a portable battery of the embodiment. The power outage countermeasure set shown in FIG. 1 is a set for implementing the function of securing power using a battery when a power outage occurs. As shown in FIG. 1, this power outage countermeasure set is composed of a switch device for a portable battery (hereinafter abbreviated as a switch device) 1, a portable battery 2, a solar power generation panel 3, input side cables 41, output side cables 42, and the like.

[0010] This power outage countermeasure kit is installed on the distribution board 8, which distributes power from the grid to each load. As is well known, the distribution board is connected to the grid transmission and distribution network (hereinafter abbreviated as "the grid") provided by the power company to receive power. However, in the following explanation, "the grid" is not necessarily limited to the grid transmission and distribution network provided by the power company. For example, if the user is a large-scale facility operator that owns its own power plant (e.g., a renewable energy power plant), the grid may be the transmission and distribution network from this own power plant.

[0011] The power outage countermeasure kit described in this embodiment is a kit that is installed to add the function of securing power using a portable storage battery in the event of a power outage. The power outage countermeasure kit described below is intended for residential use such as detached houses and apartments, but it may also be installed in non-residential buildings such as offices and government offices.

[0012] As shown in Figure 1, this power outage countermeasure kit is installed on the downstream side (load side) of the distribution board 8. More specifically, it is installed on one branch switch 81 (hereinafter referred to as the target branch switch) in the distribution board 8. As is well known, the distribution board 8 is connected to the power transmission and distribution network provided by the power company and receives power supply. The power outage countermeasure kit is installed by interposing it between the target branch switch 81 and the load 9 that is powered by the target branch switch 81.

[0013] The installation of the power outage protection kit is completed simply by connecting the power supply line to the load 9 via the power outage protection kit, rather than directly connecting it to the target branch switch 81. Specifically, one end of the input cable 41 is connected to the target branch switch 81, and the other end of the input cable 41 is connected to the main input terminal of the switch device 1. At the same time, one end of the output cable 42 is connected to the load terminal of the switch device, and the other end is connected to the load 9.

[0014] As shown in Figure 1, the switch device 1 consists of a box case 10 and various elements provided within the box case 10. A main switch 11 is installed inside the box case 10. The main switch 11 includes two selection terminals 111 and 112, and one common terminal 113. In this embodiment, the first selection terminal 111 is the main input terminal, and the common terminal 113 is the load terminal. The wiring around the main switch will be explained with reference to Figures 1 to 3. Figures 2 and 3 are schematic perspective views of the portable battery switch device of the embodiment, and Figure 3 is a schematic perspective view taken from a different angle than Figure 2. Note that the box case 10 consists of a main body and a cover, and Figures 2 and 3 show the box case 10 with the cover removed.

[0015] As shown in Figure 1, the box case 10 is provided with a battery input terminal 101 and a battery output terminal 102. Inside the box case 10, there is a battery input wire 12 and a battery output wire 13. One end of the battery input wire 12 is connected to the first selection terminal 111 of the main switch 11, and the other end is connected to the battery input terminal 101. Therefore, the other end of the input cable 41 and one end of the battery input wire 12 are connected in a superimposed manner to the first selection terminal 111 of the main switch 11. One end of the battery output wire 13 is connected to the battery output terminal 102, and the other end is connected to the second selection terminal 112 of the main switch 11.

[0016] As shown in Figures 2 and 3, the main switch 11 has a first selection terminal 111 exposed at one end and a common terminal 113 and a second selection terminal 112 exposed at the other end. The common terminal 113 and the second selection terminal 112 are arranged vertically, with the common terminal 113 on top. The main switch 11 is equipped with a lever 114, which is exposed on the upper side in Figures 2 and 3. Note that although Figures 2 and 3 show the switch box 10 in a horizontal position, in reality it is fixed to the wall in an upright position, so the lever 114 of the main switch 11 is exposed on the front side through a cover (not shown).

[0017] As shown in Figures 2 and 3, the first selection terminal 111 of the main switch 11 is a screw-type terminal. The other end of the input cable 41 and one end of the battery input wire 12 are round or Y-shaped crimp terminals. As shown in Figure 2, the other end of the input cable 41 and one end of the battery input wire 12 are superimposed and fitted into the screw of the first selection terminal 111 and screwed in. As shown in Figures 2 and 3, the switch box 10 is provided with an opening 103 through which the input cable 41 is inserted. One end of the output cable 42 is also a crimp terminal and is screwed to the common terminal 113 of the main switch 11. The output cable 42 is also inserted through the opening 104 of the switch box 10. Furthermore, as shown in Figures 2 and 3, in this embodiment, the battery input terminal 101 is a 3-wire female terminal, and the battery output terminal 102 is a 3-wire male terminal. A female terminal is preferred for the battery input terminal 101 because voltage is applied to it. Note that these are just examples, and other types of terminals, including a 2-wire system, may be used.

[0018] Figures 4 and 5 are schematic front views showing the general structure of the main switch. The main switch 11 has a structure that combines two opening and closing mechanisms, a first and a second, which are opened and closed by a lever 114. The two opening and closing mechanisms are equipped with one cylinder 51 and one rotating plate 52 that are shared by both. The lever 114 is fixed to the cylinder 51. The cylinder 51 is a cylindrical rotating body, and its axis of rotation is coaxial with the central axis. The cylinder 51 is designed to rotate within a certain angular range by the operation of the lever 114. The rotating plate 52 is fixed to the cylinder 51 and rotates within a similar angular range.

[0019] Each opening / closing mechanism consists of drive pins 531 and 532 fixed to the rotating plate 52, terminal arms 541 and 542 driven by the drive pins 531 and 532, springs 551 and 552 that bias the terminal arms 541 and 542, and terminal plates 561 and 562 fixed to the ends of the terminal arms 541 and 542. Hereinafter, each element will be referred to as the first and second drive pins 531 and 532, the first and second terminal arms 541 and 542, the first and second springs 551 and 552, and the first and second terminal plates 561 and 562.

[0020] In the perspective views shown in Figures 4 and 5, the first selection terminal 111 is on the right side and the second selection terminal 112 is on the left side of the main switch 11. There are two of each of the first and second selection terminals 111 and 112, which are arranged perpendicular to the plane of the paper in Figures 4 and 5. In Figures 4 and 5, the common terminal 113 is short-circuited to both the first terminal board 561 and the second terminal board 562 by flexible wiring 601 and 602. A conductor plate (not shown) is attached to the common terminal 113, and the conductor plate is short-circuited to the common terminal 113. The conductor plate has an opening through which the lower end portion of the rotating plate 52 is inserted, and the flexible wiring 601 and 602 short-circuit the edge of this opening to each terminal arm 541 and 542.

[0021] The first switching mechanism is a mechanism that short-circuits the first terminal board 561 to the first selection terminal 111 or disconnects it from the first selection terminal 111 by operating the lever 114. The second switching mechanism is a mechanism that short-circuits the second terminal board 562 to the second selection terminal 112 or disconnects it from the second selection terminal 112 by operating the lever 114. As shown in Figures 4 and 5, one end of each terminal arm 541, 542 has a roughly U-shaped recess. Each drive pin 531, 532 is designed to fit into the recess of each terminal arm 541, 542. In addition, a guide plate (not shown) with an arc-shaped guide hole is provided on the back side of each terminal arm 541, 542. The arc of the guide hole is concentric with the rotation axis of the cylinder 51 and the rotating plate 52. Furthermore, an engagement pin (not shown) is fixed to the back side of each terminal arm 541, 542, and the engagement pin fits into the guide hole. The fitting of each engagement pin is intended to stabilize the posture and movement of each terminal arm 541, 542. For details on this structure, please refer to Patent Document 4.

[0022] The state shown in Figure 4 is when the common terminal 113 is open from both the first selection terminal 111 and the second selection terminal 112. Hereafter, this state will be referred to as the third state. In the third state, the first drive pins 531 and 532 are fitted into recesses at one end of the first terminal arms 541 and 542, and the second drive pins 531 and 532 are fitted into one end of the second terminal arms 541 and 542. Each spring 551 and 552 is positioned behind the rotating plate 52. The end closest to the cylinder 51 is fixed to a holder (not shown) and does not move, but the ends furthest from the cylinder 51 are fixed to the middle of the terminal arms 541 and 542, respectively, and move in conjunction with the rotation of the terminal arms 541 and 542.

[0023] As shown in Figures 4 and 5, a stopper 57 is provided below the cylinder 51. The stopper 57 is fixed to a base plate (not shown) and is immovable. The stopper 57 is a member that is long in the direction perpendicular to the plane of the paper and is a member that restricts each terminal arm 541, 542 from rotating beyond a limit. In the state shown in Figure 4, the biasing force of the first spring 551 acts to rotate the first terminal arm 541 counterclockwise, and the biasing force of the second spring 552 is used to rotate the second terminal arm 542 clockwise. However, each terminal arm 541, 542 is in contact with the stopper 57 at its lower portion and is prevented from rotating further.

[0024] The first terminal arm 541 extends bent perpendicular to the plane of the paper at its other end, and the first terminal plate 561 is fixed to its tip. The second terminal arm 542 also extends bent perpendicular to the plane of the paper at its other end, and the second terminal plate 562 is fixed to its tip. In Figure 4, the first and second terminal plates 561 and 562 are positioned offset perpendicular to the plane of the paper. That is, the bent portion of the first terminal arm 541 is longer, and the first terminal plate 561 is positioned in front of the second terminal plate 562 in the perpendicular direction of the paper.

[0025] As shown in Figures 4 and 5, the first selection terminal 111 is equipped with a first contact 591 fixed to the tip of an L-shaped conductor bracket 581. The second selection terminal 112 is equipped with a second contact 592 similarly fixed to the L-shaped conductor bracket 582. The first and second selection terminals 111 and 112 are offset from each other in the direction perpendicular to the plane of the paper, and the contacts 591 and 592 are also offset in the direction perpendicular to the plane of the paper. This offset corresponds to the offset of the first and second terminal plates 561 and 562. That is, the first contact 591 faces the first terminal plate 561, and the second contact 592 faces the second terminal plate 562 at an offset position. For this structure and arrangement, please refer to Figure 4 of Patent Document 5.

[0026] In the state shown in Figure 4, when the lever 114 is rotated, for example, clockwise, the first drive pin 531 rotates the recess of the first terminal arm 541 counterclockwise. At this time, since the mating pin of the first terminal arm 541 is fitted into the guide hole in the middle, the other end rotates counterclockwise around this point by the principle of leverage, and the first terminal plate 561 comes into contact with the first contactor 591 as shown in Figure 5. At this time, the other end of the first spring 551 moves beyond the position where the first spring 551 is most extended (longest point), and once it exceeds the longest point, it acts to bias the first terminal plate 561 clockwise. In other words, at the beginning of rotation, the first terminal arm 541 is biased to rotate clockwise, and the lever 114 resists this by rotating the first terminal arm 541 counterclockwise via the cylinder 51. However, once it passes the longest point, the biasing force of the first spring 551 becomes such that it biases the first terminal arm 541 counterclockwise. When the first terminal plate 561 comes into contact with the first contact 591, the first contact 591 receives this biasing force. The longest point is the position when the drive pin 531 is aligned on a straight line connecting one end (fixed point) and the other end (movable point) of the first spring 551.

[0027] The state shown in Figure 5 is when the common terminal 113 is short-circuited to the first selection terminal 111 and the common terminal 113 is released from the second selection terminal 112. Hereafter, this state will be referred to as the first state. To return the lever 114 to its original state (third state), rotate the lever 114 counterclockwise from the state shown in Figure 5. Even in this case, once it has passed its longest point, the direction in which the biasing force of the first spring 561 acts changes, causing the first terminal arm 541 to rotate clockwise. However, the lower part of the first terminal arm 541 hits the stopper 57, so it does not rotate any further, resulting in the third state shown in Figure 4.

[0028] Although not shown in the diagram, when the lever 114 is rotated counterclockwise from the state shown in Figure 4, the movement is basically the same, only reversed. The second drive pin 532 pushes out the recess of the second terminal arm 542, causing the second terminal arm 542 to rotate clockwise. This movement is contrary to the biasing force of the second spring 552, but once it passes its longest point, the biasing force of the second spring 552 reverses, causing the second terminal arm 542 to rotate clockwise. When the second terminal plate 562 of the second terminal arm 542 comes into contact with the second contactor 592, rotation is restricted at that point, and the common terminal 113 is short-circuited to the second selection terminal 112. In this state, the first selection terminal 111 remains open from the common terminal 113, and this state will be referred to as the second state below.

[0029] The following describes each state using perspective views. Figure 6 is a schematic perspective view of the switch device when the main switch 11 is in the first state, and Figure 7 is a schematic perspective view of the main switch when it is in the second state. As is clear from the above explanation, Figure 2 is a schematic perspective view of the main switch when it is in the third state. For switches with such a structure and operation, for example, a changeover switch DS32 manufactured by Nitto Kogyo Co., Ltd. can be used. For further information, please refer to Patent Document 5.

[0030] On the other hand, the portable battery 2 using such a switch device is equipped with an AC100V input terminal (hereinafter referred to as AC input terminal) 21 and an AC100V output terminal (hereinafter referred to as AC output terminal) 22, as shown in Figure 1. The AC input terminal 21 is connected to the battery input terminal 101 by a battery input cable 24, and the AC output terminal 22 is connected to the battery output terminal 102 by a battery output cable 25. Furthermore, the portable battery 2 is equipped with a DC input terminal 23 for connecting the solar power generation panel 3. The portable battery 2 is also equipped with a power storage mode selection switch 20 that switches between power storage from the AC input terminal 21 (AC mode), power storage from the DC input terminal 23 (DC mode), or a hybrid (HB) mode that stores power from both. In the hybrid mode, which stores power from both, priority is given to power storage from the DC input terminal 23 in order to obtain energy saving effects. In hybrid mode, if power from solar panels 3 is depleted at night or other times, AC power (grid power) is used for storage.

[0031] As can be seen from Figure 1, this power outage countermeasure set basically consists of a portable battery 2 connected in series between the target branch switch 81 and the load 9. That is, the input terminal 21 of the portable battery 2 is connected to the target branch switch 81 by the input cable 41, and the output terminal 22 of the portable battery 2 is connected to the load 9 by the output cable 42. Therefore, the portable battery 2 and the load 9 are in series, and the portable battery 2 is on the upstream side. The main switch 11 remains in the second state shown in Figures 1 and 7 unless the portable battery 2 is removed. The second state is the normal state, and as mentioned above, the main switch 11 is in a state where the second selection terminal 112 and the common terminal 113 are short-circuited.

[0032] As shown in Figure 1, an additional switch 14 is provided on the battery input line 12. The additional switch 14 is a switch that can select between short-circuiting and opening the battery input line 12. The additional switch 14 is provided as a safety device for the battery input terminal 101. The additional switch 14 also has a lever as an operating part, and the lever is exposed on the outside surface (e.g., the front) of the switch box 10. By operating the lever, the short-circuiting and opening of the battery input line 12 can be switched.

[0033] The portable battery 2 has a so-called pass-through function. That is, the internal circuitry is configured so that the AC input terminal 21 and AC output terminal 22 are always short-circuited, regardless of the charging / discharging state and regardless of which input mode is selected. Therefore, as shown in Figure 1, when the main switch 11 is in the normal state (second state) and the additional switch 14 is ON, the power from the target branch switch 81 reaches the second selection terminal 112 via the input side cable 41, the first selection terminal 111, the AC input terminal 21, inside the portable battery 2, and the AC output terminal 22, and is supplied to the load 9 via the common terminal 113 and the output side cable 42.

[0034] The portable battery 2, although not shown in the diagram, includes a power outage detection circuit and an automatic power supply circuit. The power outage detection circuit detects when the power supply voltage becomes zero while the battery input cable 24 is connected to the AC input terminal 21 (detects a power outage), and also detects when the power supply voltage recovers after the power outage detection (detects the resolution of the power outage). The automatic power supply circuit automatically starts supplying power (outputs AC 100V to the AC output terminal 22) when the power outage detection circuit detects a power outage. These functions are the same as those of a so-called uninterruptible power supply (UPS).

[0035] Furthermore, the portable battery 2 using the switch device 1 of the embodiment is equipped with a reverse power flow prevention circuit and has a reverse power flow prevention function. Reverse power flow prevention is a function that prevents the stored power from flowing in the reverse direction. In other words, it is a function that prevents power from flowing out from the AC input terminal 21. As a portable battery 2 having such configurations, for example, the Anker Solix C1000 manufactured by Anker Japan can be used.

[0036] In the configuration shown in Figure 1, when the portable battery 2 is removed, the main switch 11 is operated. This point will be explained with reference to Figure 8. Figure 8 is a schematic diagram showing the wiring state when the portable battery is removed. When removing the portable battery 2, the main switch 11 and the additional switch 14 should be operated beforehand to the state shown in Figure 8. That is, the first selection terminal 111 should be short-circuited to the common terminal 113, and the additional switch 14 should be left open.

[0037] By setting the main switch 11 to the first state, the portable battery 2 is disconnected from the load 9 and also from the target branch switch 81. The grid power from the target branch switch 81 flows directly from the first selection terminal 111 to the common terminal 113 and is supplied directly to the load 9. After this state is achieved, the battery input cable 24 and battery output cable 25 that were connected to the switch box 10 are disconnected to remove the portable battery 2 from the switch box 10. If the solar power generation panel 3 is connected to the DC input terminal 23, it is acceptable to leave it as is, but if the portable battery 2 is to be taken outdoors, the DC cable 31 should be disconnected from the DC input terminal 23.

[0038] Next, a method for dealing with power outages as an example of using the switch device 1 of this embodiment will be described below. The power outage countermeasure kit is installed on the existing distribution board 8 as described above. The switch box 10 is installed by fixing it to a wall or similar surface. The installation location should preferably be close to the distribution board 8, but it may be in a more distant location. If a location for the portable battery 2 cannot be secured near the distribution board 8, it will likely be located in a slightly more distant location.

[0039] For safety reasons, the target branch switch 81 is turned off before wiring. Also, the main switch 11 in the switch device 1 is operated to set it to the third state. The additional switch 14 is also set to the off state. In this state, the other end of the input cable 41 is connected to the first selection terminal 111 of the main switch 11, and one end is connected to the target branch switch 81. At this time, since the terminal of the battery input line 12 is connected to the first selection terminal 111, the other end of the input cable 41 is connected so as to overlap it and secured with a screw. Also, one end of the output cable 42 is connected to the common terminal 113, and the other end is connected to the load 9.

[0040] After connecting cables 41 and 42 in this manner, the AC input terminal 21 of the portable battery 2 is connected to the battery input terminal 101 with the battery input cable 24, and the AC output terminal 22 of the portable battery 2 is connected to the battery output terminal 102 with the battery output cable 25. In this state, the lever 114 of the main switch 11 is operated to switch to the second state and the additional switch 14 is turned on. Then, the target branch switch 81 is turned on. In addition, the solar power generation panel 3 is connected to the DC input terminal 23 of the portable battery 2 with the DC cable 31. The power storage mode selection switch 20 on the portable battery 2 is often set to AC mode or hybrid mode. Note that the power outage countermeasure set may also be installed during the construction of the building. In this case, the power outage countermeasure set is installed during the electrical work carried out during the construction of the building.

[0041] Once the installation is complete as described above, the grid power from the target branch switch 81 flows through the first selection terminal 111 of the main switch 11 into the portable battery 2, and is supplied to the load 9 via the second selection terminal 112 of the main switch 11. At this time, the portable battery 2 is also charged. In addition, if the power storage mode selection switch 20 is set to hybrid mode or DC mode, the portable battery 2 is charged by the solar power generation panel 3 during the daytime when it is sunny.

[0042] In this situation, if a power outage occurs due to a large-scale disaster, the power supply from the grid to the distribution board 8 is interrupted, and the power supply from the target branch switch 81 is lost. The power outage detection circuit in the portable battery 2 detects this, and the automatic power supply circuit operates, generating an output voltage at the AC output terminal 22 and starting power supply. That is, power from the portable battery 2 is supplied to the load 9, and power supply to the load 9 (for example, the living room) continues. When the power outage is resolved, the power outage detection circuit of the portable battery 2 detects the restoration of power, and the automatic power supply circuit stops the output of stored power. Then, the pass-through function of the portable battery 2 resumes the supply of grid power to the load 9. In addition, if it is sunny during the daytime when there is a power outage, the solar power generation panel 3 will store power in the portable battery 2 in parallel. Therefore, the time until the portable battery 2 runs out of charge is extended.

[0043] When removing the portable battery 2 for outdoor use, the main switch 11 is changed from the second state (normal state) shown in Figures 1 and 7 to the first state shown in Figures 6 and 8. The additional switch 14 is also turned off (open). Then, the battery input cable 24 and battery output cable 25 are disconnected, as well as the DC cable 31 connected to the solar power generation panel 3. This detaches the portable battery 2 from the switch box 10 and the solar power generation panel 3, making it possible to take it outdoors. In this example, since the solar power generation panel 3 is also portable, it can be taken outdoors together with the portable battery 2 for solar power generation.

[0044] With this type of power outage preparedness kit, the portable battery 2, which is normally charged (when there is no power outage), supplies power to the load 9 during a power outage. Therefore, electricity can be used for the load 9 until the portable battery 2 runs out of charge. This makes it possible to use the minimum necessary amount of electricity during a disaster. Furthermore, since installation is completed simply by attaching the switch device 1 and connecting the portable battery 2, the installation is extremely inexpensive and can be completed in a short time. And because it is a set that combines the simple structure of the switch device 1 with the inexpensive portable battery 2, the hardware cost can be made significantly cheaper. As a result, power outage countermeasures during disasters can be implemented at a low cost.

[0045] Furthermore, since the main switch 11 can maintain a third state in addition to the first and second states, safety during installation is further enhanced. As can be seen from Figure 1, in either the first or second state, the target branch switch 81 and the load 9 are short-circuited (when the additional switch 14 is absent or on). In this case, if installation is carried out with the target branch switch 81 on, voltage will be applied to the load 9 the moment the switch device 1 is installed, which could be a safety issue. In the embodiment, since the main switch 11 can maintain a third state, installation can be carried out while maintaining an open state for the load 9. Therefore, safety during installation is enhanced.

[0046] Furthermore, the inclusion of an additional switch 14 enhances safety when the portable battery 2 is removed. Without the additional switch 14, although the grid power from the target branch switch 81 is supplied to the load 9, that voltage is also applied directly to the battery input terminal 101. In this case, if the battery input terminal 101 were to short-circuit for any reason, an overcurrent would flow, which the target branch switch 81 would detect and cut off the power supply. As a result, power would no longer be supplied to the load 9, resulting in a state known as a tripped circuit breaker. In this embodiment, since the additional switch 14 is provided, when the portable battery 2 is removed, leaving the additional switch 14 open prevents the grid power voltage from being applied to the battery input terminal 101, thus eliminating the risk of a short circuit.

[0047] Furthermore, in this embodiment of the power outage countermeasure set, the portable battery 2 can be removed and used for outdoor leisure activities, thus offering a double benefit. The portability of the battery also has another advantage: it can be taken to another location indoors during a power outage and used as needed. For example, if the toilet can only be flushed electrically and the power cable is plugged into an outlet, the portable battery 2 can be taken to the toilet, the power cable connected to the AC output terminal 22 of the portable battery 2, and the toilet can be flushed. In other words, it offers a triple benefit.

[0048] Furthermore, this power outage countermeasure kit is equipped with a solar power generation panel 3, which can store power in the portable battery 2. This allows for delaying the time it takes for the portable battery 2 to run out of charge during a power outage, making it particularly suitable for prolonged power outages. Moreover, since the solar power generation panel 3 is also portable, it can be taken outdoors and used together with the portable battery 2, extending the usage time (time until the portable battery 2 runs out of charge) outdoors. If the solar power generation panel 3 is not portable, it may be mounted on the roof or wall of a building such as a house.

[0049] Furthermore, since the portable battery 2 is equipped with a reverse power flow prevention function, it prevents the stored power from accidentally flowing into the grid. In Figure 1, if the stored power flows out from the AC input terminal 21 of the portable battery 2, it will reach the distribution board 8 via the first selection terminal 111 of the main switch 11 and flow back into the grid. In this case, if the owner who installed the power outage countermeasure set has applied to the power company for power, the reverse power flow will be permitted as surplus power sold back to the power company. However, if no power application has been made, it is necessary to prevent the reverse power flow. In other words, this power outage countermeasure set is ideal because it allows for emergency power supply measures during power outages while using solar power generation panels as a completely self-consumption type power generation system, and it can be easily introduced as no power application is required.

[0050] Furthermore, if the portable battery 2 does not have a reverse power flow prevention function, a configuration may be adopted in which a reverse power flow detection sensor is installed on the line downstream of the target branch switch 81, and a circuit breaker is installed on the line to the battery input terminal 101 (for example, on the battery input line 12). When the reverse power flow detection sensor detects reverse power flow, the circuit breaker automatically opens the line to cut off the reverse power flow. A configuration in which the circuit breaker also serves as an additional switch 14 may also be adopted.

[0051] In the above embodiment, when removing the portable battery 2, it is necessary to operate the first switch 11. If the operation is forgotten before removal, the first branch switch 81 and the first load 91 will be opened, interrupting the power supply to the first load 91 and creating a situation similar to a tripped circuit breaker. Power will be restored by operating the first switch 11 afterward, so there is no problem, but to avoid such a situation, the first switch 11 may be made an automatic switch. Examples of automatic switch configurations are disclosed in Patent Document 2, etc., so a detailed explanation will be omitted.

[0052] Furthermore, in the above configuration, the main input terminal was the first selection terminal 111, and the input cable 41 directly connected the main switch 11 and the target branch switch 81. However, the main input terminal may also be a terminal provided on the switch box 10. In this case, internal wiring is provided to connect the main input terminal and the first selection terminal 111 of the main switch 11. The same applies to the load terminal; the load terminal may be a terminal provided on the switch box 10 instead of the common terminal 113 of the main switch 11. In this case as well, internal wiring is provided to connect the common terminal 113 and the load terminal. Furthermore, the wiring between the main switch 11 and the portable battery 2 may also be directly connected without going through the terminals on the switch box 10. That is, the wiring extending from the additional switch 14 may be the battery input cable 24 and be directly connected to the AC input terminal 21 of the portable battery 2, or the second selection terminal 112 of the main switch 11 and the AC output terminal 22 of the portable battery 2 may be directly connected by the battery output cable 25.

[0053] In the above configuration, the portable battery 2 is equipped with a DC input terminal 23 and is directly connected to the solar power generation panel 3. However, portable batteries without a DC input terminal 23 can also be used. When using a portable battery without a DC input terminal 23, an inverter is installed in between to convert the DC voltage output from the solar power generation panel 2 to AC 100V AC, and the inverter is connected to the switch box 10. Inside the switch box 10, there is a power storage changeover switch that switches between storing power in the portable battery 2 or in the solar power generation panel 3 using grid power.

[0054] Although it has been explained as if there is only one load 9, there may be multiple loads 9. In this case, in addition to a configuration where one power outage countermeasure set is interposed for one load 9, there may also be a configuration where one power outage countermeasure set is provided for multiple loads. When using multiple power outage countermeasure sets, the solar power generation panels may be shared among each power outage countermeasure set. It is possible to configure the system by splitting the power supply line from one solar power generation panel into two to supply power to each portable battery, or by providing a switch on one solar power generation panel to select which portable battery to supply power to. Furthermore, while the load is often 100V AC, it may also be 200V AC. In this case, if the portable battery 2 has a 200V AC output terminal, the battery output cable 25 can be connected to it in the same way and used. Alternatively, a transformer can be installed between the battery output cable 25 connected to the 100V AC output terminal 22 and the load, boosting the voltage to 200V. The transformer may be installed on the battery output line 13 inside the switch box 10.

[0055] The power outage preparedness kit described above can be used not only in ordinary homes but also in offices and government offices. For example, government offices that play a central role in responding to disasters need to ensure that a minimum amount of power (such as power for communication with relevant parties) is available even during a power outage. The power outage preparedness kit can be installed for this purpose.

[0056] Furthermore, solar panels are not necessarily required in a power outage preparedness kit; a kit without solar panels is also acceptable. In this case, the power outage preparedness kit consists of a switch device 1 and a portable battery 2. Furthermore, the method of attaching the power outage countermeasure kit to the distribution board 8 is a type of power outage countermeasure method, and the installation and use of the power outage countermeasure kit can be understood as an invention of a power outage countermeasure method. In addition, the method of installing and using the power outage countermeasure kit can be understood as an invention of a method for implementing power outage countermeasures. [Explanation of symbols]

[0057] 1. Switching device 10 Switch Box 101 Battery input terminal 102 Battery output terminal 11 Main switch 111 First selection terminal 112 Second selection terminal 113 Common terminal 12 Battery input line 13 Battery output wire 14 Additional switches 2 Portable battery 21 AC input terminals 22 AC output terminals 24 Battery input cable 25 Battery output cable 3. Solar power panels 41 Input cable 42 Output cable 8 Distribution board 81 Target branch switch 9 Load

Claims

1. A switch device used when installing a portable battery storage system, which is interposed between a distribution board and a load to which power is supplied from the grid transmission and distribution network by the distribution board, Switch box and The main input terminal connected to the distribution board, Load terminals connected to the load, A battery input terminal that connects to the input terminal of a portable battery, Battery output terminal connected to the output terminal of the portable battery, The main switch located in the switch box and It is equipped with, The main switch is equipped with a first selection terminal, a second selection terminal, a common terminal, and a lever. In the main switch, a first selection terminal is exposed at one end, and a common terminal and a second selection terminal are exposed at the other end. The first selection terminal of the main switch is the terminal that connects to the distribution board. The common terminal of the main switch is the terminal that is connected to the load. A battery output line is provided, which is connected to the battery output terminal by connecting the second selection terminal of the main switch, and a battery input line is provided, which is connected to the battery input terminal by connecting the first selection terminal of the main switch. A switch device for a portable battery, characterized in that the lever can take on a first state in which the common terminal is short-circuited to the first selection terminal and left open from the second selection terminal, a second state in which the common terminal is short-circuited to the second selection terminal and left open from the first selection terminal, and a third state in which the common terminal is left open from both the first and second selection terminals.

2. The portable battery switch device according to claim 1, characterized in that the main input terminal is the first selection terminal of the main switch, and the other end of the input side cable, one end of which is connected to the distribution board, is connected to the first selection terminal.

3. The portable battery switch device according to claim 2, characterized in that one end of the battery input line is connected to the first selection terminal of the main switch while superimposed on the other end of the input side cable.

4. The portable battery switch device according to claim 1, characterized in that the load terminal is the common terminal of the main switch, and the other end of the output cable, one end of which is connected to the load, is connected to the common terminal.

5. The aforementioned switch box has a box case with a rectangular cross-sectional shape, An opening is provided at one end of the box case through which the input cable connecting the distribution board and the main input terminal is inserted. The portable battery switch device according to claim 1, characterized in that the battery input terminal and the battery output terminal are provided at the end of the box case opposite to the end on one side.

6. The portable battery switch device according to claim 5, characterized in that the side on which the first selection terminal is exposed in the main switch and the side on which the opening through which the input cable is inserted is provided are the same side.

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