JP2018196316A - Power controller for emergency power supply - Google Patents

Abstract

To solve the following problem: surplus power was difficult to make effective use of, because an emergency power supply for refuge may be broken by an overload or overcurrent, although the emergency power supply has surplus power.SOLUTION: The emergency power supply protective device, having a plurality of feeding current limiting means (2) limiting to a smaller current than a maximum current capable of being supplied to a load by an emergency power supply, can achieve effective use of surplus power with the electric power under a protected state by making a connection change while selectively changing a protection current level by selection means for selecting one feeding current limiting means (2) from the plurality of feeding current limiting means (2) and connection means for connecting the selected feeding current limiting means (2) with a feeding line to the load.SELECTED DRAWING: Figure 17

Description

This application is a divisional application of “Japanese Patent Application 2017-096099 (hereinafter referred to as“ original application ”)”.
The present invention relates to a small-capacity auxiliary power source that is not a “main power source”, for example, an electrical protection technology such as an “emergency power source” that is stored in an evacuation center and operates in a disaster, and a power control technology such as the “emergency power source”. More specifically, in the original application, an emergency power supply overload (overcurrent) protection device that prevents the emergency power supply from going down due to an overload, and in this application, a critical load and a non-critical load are mixed. Provided is a power control device for an emergency power source that supplies power.

  More specifically, the device of the present invention is a limiter that is more intelligent than the conventional device or a control device that is more intelligent than the conventional device. This is to prevent an event that induces a large current and causes an excessive current to flow through the emergency power supply that supplies power upstream, thereby destroying it.

  The meaning of “intelligent than before” means that in the “protection device” of the present proposal, the current limit is selectively limited to a plurality of current limits, so that the current limit is more limited than the single current limit. That's what it means. Furthermore, in the “control device” of the present proposal, it is realized to perform control to flow a current that is appropriately limited in an analog manner in accordance with the load condition. Conventionally, such a limit and limit control have not been performed.

Practically, the No Fuse Breaker (NFB), which detects excess current and cuts off the power supply, performs so-called “1” or “zero”, that is, whether it is turned on or off, and provides alternative protection. From this point of view, the category as the electrical equipment of the “protection device” is “distribution panel” and “distribution panel”.
The plan “control device” will be described later, and will be described from the plan “protection device”.

<Analysis of emergency power source at shelter>
At present, cassette gas cylinder-type generators are stockpiled at evacuation shelters, which are mainly used as power sources for lighting in the event of a catastrophic disaster such as a major earthquake. Such generated power is often less than 1 kW (about 900 W).

  On the other hand, because of the rapid progress in lighting LEDs, investing in replacing non-LED emergency lighting such as current halogens with energy-saving LEDs will provide a large margin for existing emergency power. Even if the replacement investment cannot be made, the emergency lighting is not used in the daytime when the weather is fine.

  And as for the amount of power (kwh), it is only necessary to purchase an inexpensive cassette gas cylinder and stockpile it, and it can be easily increased 2-3 times. (Assuming you have stocked 2 cylinders, adding 4 will triple the amount of power)

  On the other hand, it is a terrible situation that a large-scale power plant cannot be restored after a catastrophic disaster with a major power outage. Under such assumptions, it is expected that most of the portable electronic devices possessed by disaster refugees who have passed for a while after the outbreak will run out of batteries.

  Then, victims rushed to portable chargers at emergency convenience stores and electrical mass retailers, suddenly falling into information depopulation due to confusion that occurred due to the rush, and information floods familiar for many years, There are concerns about social anxiety events such as a large number of people who become mentally panic.

<Object of the present invention>
In light of this situation, the inventor has developed a technique for charging a large number of portable devices all at once by supplying power to a portable charger from an emergency power source in an evacuation center in the daytime when there is enough power.

  During the development process, we reaffirmed that emergency power is a lifeline of the lives of refugees, and that some sort of ingenuity to prevent this from happening is a very important issue from the viewpoint of safety and security of life. .

  An object of the present invention is to provide a technique for protecting an emergency power source in an evacuation site, that is, an overload, an overcurrent, etc., so that it does not go down by any chance.

<The essence of the present invention>
It is the essence of the present invention that a plurality of amperage breakers (No Fuse Breaker) are provided and used separately. Conventionally, a plurality of NFBs have not been used properly (new).
In addition, by properly using this, overcurrent (overload) of the power line of the emergency power supply is realized with a more appropriate current limit, and if there is surplus power, power can be supplied to various loads up to the limit. (Progress).

<Prior Search>
An emergency power source that is stored in an evacuation center and used during a disaster. The emergency power source is a lifeline for the lives of displaced persons. In order to prevent this from going down, it is a very important issue from the viewpoint of safety and security of life to make some ingenuity.

  However, although a technique for quickly and surely switching the emergency power supply as in Patent Document 1-2 has been proposed, there is no proposal for this essential protection of the emergency power supply.

  The grounds for this are the Patent Information Platform (J-Plat_Pat), where all documents are checked, and somewhere in the full text, “distribution panel”, “emergency disaster earthquake”, “evacuation site, shelter” This is because we searched as a product set with a description and found only 31 hits. (Figure 8) [Search execution date: May 05, 2017]

1JP 2017-038490 Disaster prevention warehouse Daiwa House Industry
2 JP2016-096627 Electrical interruption system Chugoku Electric Power
3Japanese Patent Application Laid-Open No. 2016-086528 Power generation circuit using noise current

―Omitted―
29 Patent 4494447 Disaster Toilet Asahi Concrete Industry
30 actual climbing 3113914 Residential manual power supply switching device
31 Mito 3042895 Disaster prevention distribution board Sensor technology

  Even if all of these were checked, no technology related to protecting the emergency power source at the evacuation center could be found.

  In addition, keywords related to the essence of the invention were appropriately combined on the search site “Google” to search for similar technologies (implemented on May 05, 2017). However, a website disclosing information similar to the present invention could not be found.

Patent No.5955621 "Distribution panel" Kawamura Electric Industry Patent No. 5875015 “Distribution Panel” Panasonic IP Management

  The emergency power source of the refuge is a lifeline of the refugees' lives, and it is a very important issue from the viewpoint of safety and security of life to make some effort so that it does not go down.

  An object of the present invention is to provide an emergency power source protection technique for an evacuation site, specifically, a power supply line cutoff technique that prevents an emergency power source from being down due to overload / overcurrent.

The present invention (Claim 1) includes a power receiving terminal (4) connected to an emergency power supply (10) and receiving power from the emergency power supply (10), and a plurality of currents smaller than a maximum current that the emergency power supply can supply to a load. A power supply current limiting means (2) for limiting to a power supply terminal (5) connected to a load and supplying power to the load, and a protection device for an emergency power supply,
Selection means (3) for selecting one feeding current limiting means (2) from a plurality of feeding current limiting means (2), and the selected one feeding current limiting means (2) are connected to the feeding terminal (5 ), And an emergency power supply protection device characterized in that it has connection means (3) for connecting to a power supply line to a load via. (See Figure 1)

  As a preferred embodiment of the present invention (Claim 2), the selection means (3) for selecting one power supply current limiting means (2) is an emergency power supply load value (P) and an emergency power load. This is a mode in which the selection is made based on the power consumption value (N1) of illumination.

  As another preferred aspect of the present invention (Claim 3), an independent power source using renewable energy is also provided, and from the plurality of power feeding current limiting means (2) to one power feeding current limiting means, the energy of the independent power source is used. Selection means for selecting (2) and / or connection means for connecting the selected one power supply current limiting means (2) to the power supply line to the load via the power supply terminal (5) operates. .

  Furthermore, as another preferred embodiment of the present invention (Claim 4), a plurality of power feedings are performed under the conditions of the on-time period when a single feeding current limiting means (2a) is selected. Selection is changed by a selection unit that selects one power supply current limiting unit (2b) from the current limiting unit (2), and the other power supply current limiting unit (2) is connected to the power supply terminal (5) based on the selection change. The connection is changed to connect to the power supply line to the load via).

<1 Explanation of main claim>
FIG. 1 is an image sketch of an emergency power source for a refuge and a device of the present invention at the time of a disaster, and shows essential items “2”, “3”, “4”, and “5” included in the device of the present invention. The right side of FIG. 1 is connected to an emergency power source (10) mainly used for illumination, and the left side thereof is connected to the device (1) of the present invention. The present invention device (1) is provided with four feeding current limiting means (2) of “2A”, “4A”, “6A” and “8A”, and further selecting one of them and interveningly connecting it to the load feeding line 5 shows the provision of a general connection means (3) and the provision of a power receiving terminal (4) and a power feeding terminal (5).

  The greatest feature is the provision of a plurality of power supply current limiting means (2) and selective use of them by (3). In FIG. 1, the selective connection means (3) is shown as about, but this specific configuration will be described later.

  Most of the emergency power sources (10) are “cassette gas cylinder type generators” that can be easily maintained during storage, and are mainly used as power sources for lighting. The first priority is to remove the fear of darkness, and the first is lighting. The amount of power generated by such cassette gas cylinder type generators at affordable prices is often less than 1 kW (about 900 W). As many cassette gas cylinders (11) as there are to meet the desired amount of power are stored.

<Description of claim 2>
There was a time when high-luminance halogen lighting was chosen because the emergency lighting in the shelter was considered bright anyway. The power of halogen is 300 to 400W. It is rare to stockpile multiple halogens. That is, it is a set of 900W cassette gas cylinder type generator and 300W halogen illumination.

  Here, the surplus power (Q) is the difference between the generated power value (P) of the emergency power supply and the power consumption value (N1) of the emergency lighting that is the load of the emergency power supply: (Q = P-N1) . That is, if the voltage is 100 V, the maximum current 6 A: ((900-300) / 100) is the limit value of the current that can be passed. Therefore, it is appropriate that the current limit is 6A. (See Figure 2)

  In this way, the limit value of the feeding current limiting means (2) is determined. That is, the selection means for selecting the feeding current limiting means (2) is to calculate and select based on the power generation value (P) of the emergency power supply and the power consumption value (N1) of the emergency lighting that is the load of the emergency power supply. That is.

If it is essential to supply power to the headquarters power that makes use of personal computers other than lighting with such emergency power, Q = P- (N1 + N2), where "Other important power" is "N2". If the value of Q is divided by 100V, the limiting current can be obtained. This example is taken as Example 2. An example in which LED energy-saving lighting is used is shown as Example 3 on the right side of FIG.
Examples 1 to 3 are summarized as follows:

  As illustrated, the selection means for selecting the supply current limiting means (2) includes the power generation value of the emergency power supply (P), the power consumption value of the emergency lighting that is the load of the emergency power supply (N1), and `` other important The preferred mode is to select based on “power” (N2).

  Here, the means for making this selection may be realized by a computer executing the above calculation. However, in reality, a human (emergency power manager) may manually calculate and obtain the result.

  Further, as will be described later, the realization body of the connection means for connecting the power supply current limiting means (2) to the power supply line to the load via the power supply terminal (5) may be an automatic circuit by relay control or a sequencer, It may be realized by a human (emergency power supply manager) manually turning on and off the cutoff / connection switch around the current limiter.

<Description of claim 3>
This subclaim indicates a strategy for more specifically realizing (implementing) the apparatus. FIG. 2 is a numeric keypad for inputting the above-mentioned generated power value (P) and the value of the power consumption value (N1) of emergency lighting that is the load of the emergency power supply, and the judgments “Yes” and “No”. The exchange routine which a simple calculator type device (means) having an input key and a human system (power supply manager) make, and the driving energy of the simple calculator type device are shown.

  It is not preferable to use the precious energy of the emergency power source to drive this simple calculator-type device even if the power consumption is small. Therefore, it is preferable that such a simple calculator-type device can be driven using renewable energy such as sunlight. This power supply arrangement can be easily realized with the same specifications as a known calculator. That is, it is preferable that an independent power source using renewable energy is also provided, and the selection unit operates with the energy of the independent power source.

  Since this selection means, that is, “selection means for selecting one power supply current limiting means (2) from a plurality of power supply current limiting means (2)” is data input and four arithmetic operations similar to a calculator, power consumption is small.

  Similarly, with respect to “connecting means for connecting one selected feeding current limiting means (2) to a feeding line to a load via the feeding terminal (5)”, the energy of the independent power source by renewable energy is used. It is preferably operated. However, since this “connecting means” requires driving of a relay contact (not only for data input and calculation), it requires relatively large power.

  This relatively large electric power is consumed instantaneously when switching from the power supply current limiting means (2a) to (2b), so a capacitor (capacitor) suitable for instantaneous high power discharge is provided in the circuit in the apparatus. It is preferable to arrange and drive with this instantaneous energy release (discharge).

  The capacitor is preferably designed with a solar cell capacity and a capacitor capacity so that the solar cell or the like can be sufficiently charged in a time period without switching operation. In addition, it is preferable to design the capacity in consideration of the setting of the reselection / connection change timing and the frequency of the power supply current limiting means (2) (the “on-time” setting described in the next section).

  Switching from the feed current limiting means (2a) to (2b) may be performed as illustrated in FIG. That is, for lighting, the time and weather conditions are taken into account, the surplus power (Q) is recalculated, and the current limit is changed from that result.

<4 Explanation of Claim 4>
The necessity of such reselection / reconnection of the feed current limiting means (2) is as follows. In other words, the largest party to which power is supplied by the emergency power source is emergency lighting, but there is a high possibility that no lighting is required during the daytime when the weather is good. However, there may be a sudden change from the morning weather.
For this reason, it is preferable to perform a routine of “reselection / reconnection if necessary” of the feeding current limiting means (2) by looking at the weather every morning, for example, at 9:00.

  That is, as illustrated in FIG. 4, for example, 11:00, 13:00, 15:00, etc., “reselection / reconnection if necessary” of the feed current limiting means (2) on time. It is recommended that the routine be implemented.

  And it will be dim from 16:00 to 17:00 in the evening, so lighting should be a forced power supply destination semi-forcedly. The dimming time varies depending on the season and region, and the on-time setting is preferably performed through the simple calculator type device (means) through the human system (power supply manager).

  Here, the current limiting device product is explained. First, as an industry term, “breaker”, “ampere breaker”, “current limiter”, and the like refer to a circuit breaker that cuts off power at a maximum current that can be supplied by a power contract. Therefore, there are only products with discrete values of 10 amperes or more such as current values corresponding to the stage power of the power contract, that is, 10, 15, 20, 30, 40,.

On the other hand, in the present invention, a current limiting device of less than 10 amperes such as 2, 4, 6, 8 is used. To illustrate this, Izumi Electric's (IDEC) thermal trip type "Circuit Protector (trademark not registered)" product (see Fig. 10) and its fluid electromagnetic trip "Circuit Protector (trademark not registered)" product (See FIG. 11).
The current limiting device of less than 10 amperes is not limited to this, and various products from various companies are available.

<The essence of the invention of the “protection device”>
FIG. 16 is a diagram showing the essence of the present invention “protection device”. In other words, the “power supply” is strong every day, and protection is not considered. The current limiter in the distribution board is arranged for overcurrent protection of the load, not the power supply (FIG. 16 (a)).
On the other hand, emergency power supplies are installed in evacuation centers for extraordinary situations, that is, disasters. This emergency power supply is weak and fragile and requires protection against excessive current demand from the load (FIG. 16 (b)).
The “protection device” of the present invention has disclosed the situation of FIG. 16B on a logically and technically reproducible level.

Of course, even with the “protection device” of the present invention, protection for each load normally performed should be appropriate. This is clearly shown in FIG.
In the above, this proposal "protection apparatus" was demonstrated.

<The proposed "control device">
Next, a description will be given of the present “control device”, that is, the power control device of an emergency power source that supplies power by mixing important loads and non-important loads.

  The following measures have also been proposed for the simultaneous charging of evacuated people's out-of-battery smartphones (Fuchu City Disaster Prevention Center). In other words, the local government purchases a “multi-smartphone rapid power receiving booth (Fig. 9)” installed at home appliance mass retailers and convenience stores, and installs it at disaster prevention centers with large emergency power capacity. If it is opened, the above-mentioned confusion can be prevented.

  However, if this measure is adopted safely, the following events may occur. That is, if you connect the above-mentioned “multi-smartphone rapid power reception booth” to an unoccupied connector of an emergency power supply and charge an unspecified number of smartphones at the same time, depending on the smartphone, the “quick charging” implemented on its own or on a dedicated connector "Logic" is activated.

  In this “rapid charging logic”, a smartphone or a dedicated connector determines power feeding from a large-capacity power source, and self-impedance (internal resistance) is rapidly reduced to induce large current feeding of several amperes.

  This large current induction does not take into account the situation on the supply side (it cannot be considered in the control design), and there is no problem in a power supply case that has a large power supply capacity such as normal TEPCO, but it is an emergency power supply. If this is done, the possibility that an unexpectedly large current as described above is induced in the emergency power supply cannot be denied.

  Naturally, it is difficult to control smartphones and connectors, which are an unspecified number of possessions, from the outside (smartphone manufacturers do not disclose fast charging logic). For this reason, when the rapid charging of each smartphone overlaps, there is a risk that an instantaneous excessive load and excessive current are induced on the emergency power supply side. Therefore, when using the "Multi-Smartphone Rapid Power Receiving Booth" with an emergency power supply, perform a current measurement in a preliminary experiment, etc., and check that there is no adverse effect on the emergency power supply in a mixed state of various smartphones and various connectors. There is a need.

  To cope with this problem, the impedance of the load side is reduced by using a current limiter, current transformer (CT), and AD converter that limit the current in an analog manner using an inverter / converter. However, it is only necessary to use an emergency power supply control device having a function of continuously limiting the current in an analog manner and incorporating an electric and electronic device having a logic circuit that keeps the supply current of the emergency power supply within the rating. (See FIGS. 12 and 13)

The “power control device” of the present invention (see FIG. 12, claim 5) can be used for one or more k (k ≧ 1) important loads (N1... Nk [W]) and other non-important loads. A power control device for an emergency power supply of power (P [W]) that is fed with voltage V [V], comprising the following means (A), (B), (B), (D) is there.
(A) A calculation means for obtaining the maximum surplus power (Q [W]) that can be supplied to a non-critical load by the calculation of Equation (1),
(B) Calculation means to stop the maximum current (i [A]) when the maximum surplus power (Q [W]) is supplied by the calculation of equation (2) (i) Emergency power supply is used for other non-critical loads Measuring means of output current icurrent [A] fed with voltage V [V]
When the icurrent [A] is less than the maximum current (i [A]), no control is performed.
Current control means for performing current control using equation (3) as a control target when the icurrent [A] is equal to or greater than the maximum current (i [A]).

FIG. 12 is a schematic diagram of the “power control apparatus” of the present invention, and in particular, “20” in the figure is the essential part of the invention. In other words, “A”, “O”, “A”, “Ding”:
Exhibit A Calculation method to obtain the maximum surplus power (Q [W]) that can be supplied to the non-critical load by the calculation of Equation (1) O Maximum current when the maximum surplus power (Q [W]) is supplied (i [A] ) Is also calculated by equation (2). 丙 Measurement method of output current icurrent [A] that the emergency power supply is supplying to other non-critical load with voltage V [V]. Current control means for performing current control using a value as a control target.
And “D” “S”:
D Database for summarizing names and power capacities of all loads of the emergency power supply S A selection means for selecting k important loads (k ≧ 1) from all the loads of the emergency power supply is provided.

  The database D stores, for example, lighting load: 300 W, personal computer load: 50 W, emergency stair lighting LED: 40 W, life saving AED device: 100 W, emergency call wireless power source: 200 W,. The selection means S selects a load to be preferentially supplied during a disaster from the loads stored in the database in accordance with the circumstances at that time.

  Furthermore, the “power control device” of the present invention (Claim 6) selects one or more k (k ≧ 1) important loads (N1... Nk [W]) from all the loads of the emergency power supply. The apparatus further includes a selection unit.

  For example, if the selection means S is selected in the daytime when the weather is good, the lighting load is not preferentially selected. Conversely, when the selection means S is selected at nightfall, the lighting load is preferentially selected. Furthermore, if a terrorist attack is selected in a situation where there is a concern in response to a disaster from the Cabinet Office's anti-terrorism information agency, the emergency call wireless power source should be selected as the top priority to ensure correct information. .

  Selection of this selection means is performed by a human system (emergency power supply manager), but in the distant future, AI (Artificial Intelligence) will be automatically executed.

  The “power control device” according to the present invention is a non-controllable device that uses a measured value of icurrent [A] of cocoon as a control target, and when the icurrent [A] is less than the maximum current (i [A]). , When icurrent [A] is equal to or greater than the maximum current (i [A]), the current is controlled by alternating current according to the function as the current control means that the current control is performed using the expression (3) as a control target. Block “CLAC”.

  The circuit block “CLAC” includes “Con: converter (rectifier AC → DC converter)”, “CLDC: direct current limiting circuit”, and “Inv: inverter (DC → AC converter)”. When the current is less than the maximum current (i [A]), no control is performed, and when icurrent [A] is equal to or greater than the maximum current (i [A]), current control is performed using the expression (3) as a control target. Controlled AC power supply is performed for non-critical loads.

  Naturally, the output current of the emergency power supply does not exceed the maximum current i [A].

  The direct current limiting circuit “CLDC” is a non-linear circuit using a semiconductor such as “Current limiter with NPN transistors” and “Current limiter with PNP transistors” illustrated in FIG. 12, and includes transistors, thyristors, Since various circuits are known for each device characteristic such as triac, it is only necessary to design an appropriate circuit having high cost performance among them.

  FIG. 13 shows an image of current control by the conventional (a), “power supply protection device” (b) of the present invention described in the first half of this specification, and “power control device” (c) of the second half of this specification. Is.

  That is, the conventional system shown in FIG. 13 (a) responds to an extreme current demand from a load-side smartphone or connector that wants to be quickly charged (i.e., a high-speed charging with a large current) without being countered. Since there was not enough time for the protection mechanism to work, there was a danger such as an instantaneous short circuit.

  On the other hand, in the “power protection device” of the present invention, such a countermeasure is to apply a current limit that cuts off the power supply when the limit current is exceeded, and does not respond to any extreme current demand exceeding the limit current. Yes (see FIG. 13B).

  In addition, the “power control device” of the present invention is not compatible with the zero point like the digital “whether it is turned on or off” of the “power protection device”, but the current is limited to a safe side in an analog manner. FIG. 13C schematically shows a method for maintaining power supply while controlling.

  If power supply is maintained in this way, charging itself is maintained although it takes time without adversely affecting the smartphone or connector on the load side that has produced an extreme current demand. There is no charge stop).

  In other words, the charging current of the smartphone or tablet is struck at the limit current to maintain the power supply, and the “slow charging” in which the extreme speed of the high-speed charging is relaxed by control. As a result, it takes time, but it is more appropriate than frequent charge stop or emergency power down. Moreover, if you can complete charging the next morning with "slow charging" from midnight to the next morning, you will not receive a big complaint from smartphones and tablet users.

  On the other hand, the emergency power supply control device having the function of continuously limiting the current in an analog manner is generally expensive, and considering the circumstances that it is used only in an emergency, the investment effect is somewhat questionable. Considering the special circumstances of emergency use when actually applying, “protection” in the first half of the proposal, that is, “digital type (whether it is turned on or off) power supply protection device” may be used. Whether it is sufficient to use a control device that suppresses the current in a formula should be determined and used appropriately.

  Finally, the present “control device” mode in the case where the “other unimportant load” is a DC load will be described. Charging of portable electronic devices such as smartphones and tablets exemplified multiple times in this specification. Since this is charging a built-in secondary battery of a smartphone or a doublet, it is naturally a power supply to a DC load.

  On the other hand, in FIG. 12, an AC load is assumed, and an inverter (Inv) is provided at the final output stage to form a circuit. However, this inverter (Inv) is unnecessary if charging a portable electronic device such as a smartphone or a tablet. Excluding the inverter (Inv) not only has the effect of reducing the manufacturing cost of the present control device, but also reduces the loss from the emergency power source to the load, and is effective.

  Therefore, as shown in FIG. 14, the inverter (Inv) is removed from the output final stage shown in FIG. 12, and a direct current output terminal is provided as an output of the current limiting circuit with “CLDC” direct current. In this configuration, the connector of the portable electronic device is connected and charged.

  The large block that was “CLAC” in FIG. 12 becomes a “CLDC ′” medium-scale block in FIG. 14, which is converted from AC to DC by “Con” and “CLDC”, and through the current limiting circuit at that DC. It is a circuit block that outputs in direct current.

In other words, it is preferable that the other non-important load is a DC load, and the means of (Ding) includes a DC output terminal and is as follows. Ie;
(Ding): Current control means for controlling the following (A) and (B) with the icurrent [A] measurement value of (B) as the control target.
(A): When the icurrent [A] is less than the maximum current (i [A]), the DC output is fed to the DC output terminal without control.
(I): When icurrent [A] is larger than the maximum current (i [A]), the current value of icurrent [A] on the power input side is set to the maximum current ( i [A]) Current control means for suppressing the following and supplying the DC output on the power output side to the DC output terminal.

  There are two types of charging terminals for smartphones and tablets, Apple and others. Furthermore, there are differences in the connector size in two stages depending on the capacity of each smartphone and tablet, so this alone has four different male connectors. Exists.

  Therefore, the DC output terminal “T” in FIG. 14 preferably has a parallel connection configuration of four types of female connectors as shown in FIG. In this way, smartphones and tablets with any of the four male connectors can be charged in common, which is convenient.

<The essence of the invention of the present "control device">
FIG. 17 is a view showing the essence of the present invention “control device”. In other words, the “power supply” is strong every day and has a power that can respond to the current demand of the load to some extent. On the other hand, depending on the load, the load current must be limited (FIG. 17 (a)).
However, emergency power supplies are installed in evacuation shelters in extraordinary situations, that is, during catastrophic disasters. This emergency power supply is weak and fragile, and cannot respond to an excessive current demand from the load, so it is necessary to limit the current demand (FIG. 17 (b)).
The “control device” of the present invention has disclosed the situation of FIG. 17 (b) at a logically and technically reproducible level.

Of course, even in the “control device” of the present invention, there should be a load current limit for a load that is normally performed. This is clearly shown in FIG.
The foregoing has described the merits "control device".

<Effect of the proposed “protection device”>
The emergency power supply for evacuation shelters is considered to be the most important power supply for emergency lighting, but in some cases it can be used adaptively and effectively as a power source, such as charging smartphones or powering electric blankets for refugees trembling in cold shelters. It is hoped to do. However, in the past, there was a risk of overcurrent / overload due to rapid charging of the smartphone, or overcurrent / overload due to the connection of a heat generating large capacity load such as an electric blanket, and such use was impossible. .

  If such an overcurrent / overload event occurs, the emergency power supply overcurrent / overload prevention function specs will be exceeded (the power supply built-in NFB circuit cannot catch up) and the emergency power supply may go down ( The circuit is destroyed, such as a partial short circuit.)

  The `` protection device '' of the present invention inputs information on the power supply and load from the human system (emergency power supply manager), appropriately protects, that is, selectively incorporates a plurality of power supply current limiting means provided in the circuit, and Overcurrent / overload event can be protected from the outside of the emergency power supply, and double protection has been realized (the NFB with built-in power supply is regarded as a single defense).

  Also, for example, information based on the weather is input from the human system (emergency power supply manager), and the plurality of power supply current limiting means provided on a regular basis are selected again on a regular basis, and the connection is changed as necessary. As a result, the emergency power source for the evacuation shelter was made more effective than ever and safe for the power source.

<Effects of the proposed "control device">
The proposed "control device" is a power control device that is more intelligent than the conventional emergency power supply that supplies power by mixing important loads and non-important loads. Can be prevented from occurring by causing an excessive current to flow through the emergency power supply that supplies power upstream, and breaking it.

That is, in the “control device” of the present proposal, it has been realized that control is performed so that a current that is appropriately limited in an analog manner is allowed to flow in accordance with the load condition. Conventionally, such a limit and limit control have not been performed.

The situation image figure which has connected the protective device (1) of this invention to the emergency power supply (10). Explanatory drawing of the initial setting routine by human system (power supply manager) numeric keypad input. Explanatory drawing of the switching routine from a feed electric current limiting means (2a) to the same (2b). Explanatory drawing of switching routine from feeding current limiting means (2a) to same (2b) at regular intervals. Explanatory diagram of a calculator-type input / display unit driven by renewable energy (Solar Power). Explanatory drawing of manual connection means: (a) is a single line connection diagram of a power line, (b) is a manual connection / cutoff switch, and (c) is a schematic diagram specifically illustrating a short connection with a double line. Explanatory drawing of the connection means by the control circuit driven by renewable energy and the relay (relay) driven by the same energy: (a) is a single line connection diagram of a power line, (b) is a control circuit by a relay. J_Plat_pat search result example diagram Multi smartphone quick charge booth photo Circuit protector (thermal trip type) [Izumi Electric] reference diagram Circuit protector (fluid electromagnetic trip type) [Izumi Electric] reference diagram Schematic diagram of “power control device” of the present invention, 20 is an essential part of the invention (A) Conventional protection or control characteristic, (b) Current interruption characteristic of the present proposal “protection”, (c) Current control characteristic of the present proposal “control”. Explanatory drawing of the “power control device” aspect of the present invention for a DC load An example of a female connector for parallel union charging that can be commonly used with various types of male connectors for smartphones and tablets. (A) Each conventional load protection, (b) "Protection" on the power source side, (c) Each of the cases where each conventional load protection is added to (b) (A) Conventional load current limitation, (b) Supply current limitation on the power supply side, and (c) (b) when conventional load current limitation is further added

1 “Emergency power protection device” of the present invention
2 Feeding current limiting means 3 for limiting the current to a value smaller than the maximum current that can be fed to the load at 10 3 Connecting to selective means 4 10 for selecting one of a plurality of 2 and intervening connection of 2 to the load feeding line The power receiving terminal 5 fed from 10 and the selective connection means 10 for intervening and connecting the power feeding terminal 62 connected to the load and feeding the load from 1 to the load power feeding line 10 emergency power source 11 cassette cylinder 20 Con converter (rectifier AC to DC converter) showing the essence of the invention
CLAC Block that realizes current limitation with alternating current CLDC Current limiting circuit with direct current CLDC 'A circuit block D that outputs from direct current to direct current through the current limiting circuit with Con and CLDC. Database that summarizes load name and power capacity Inv inverter (DC to AC converter)
S Selection means to select k (k ≧ 1) important loads from all loads of emergency power supply T DC output terminal, female connector terminal for charging smartphones and tablets

Claims (4)

One or more of k (k ≧ 1) of the critical load (N1 ··· Nk [W]) , and, the generated power is fed by a voltage V [V] to the other non-critical load (P [W]) A power control device for an emergency power source, comprising the following means (A), (B), (B), and (Ding). [N1 ... Nk [W] is the power consumption value of each of k important loads]
・ (A): Calculation means to calculate the maximum surplus power (Q [W]) that can be supplied to non-critical load by the calculation of Equation (1),
・ (B): Calculation means to stop the maximum current (i [A]) when the maximum surplus power (Q [W]) is supplied by the calculation of equation (2) ・ (丙): Emergency power supply is other Means for measuring output current icurrent [A] feeding non-important load with voltage V [V]-(Ding): (i) The measured value of icurrent [A] is used as a control target as follows (A) (B) Current control means for controlling
(A): No control when icurrent [A] is less than the maximum current (i [A]).
(I): When the icurrent [A] is larger than the maximum current (i [A]), the current value of the icurrent [A] is set to the maximum current (i [A] ) with the expression (3) as a control target. ) Current control to suppress below .
  The emergency unit according to claim 1, further comprising selection means for selecting one or more k (k ≧ 1) important loads (N1... Nk [W]) from all loads of the emergency power source. Power control device for power supply. In combination with the clock, one or more k (k ≧ 1) important loads (N1 ... Nk [W]) are selected on time,
Reselection by the selection means is performed under the on-time condition,
When one or more k (k ≧ 1) important loads (N1... Nk [W]) are selected in the reselection, calculation by the calculation means of (A) (B) above. The maximum surplus power (Q [W]) due to one or more k (k ≧ 1) important loads (N1... Nk [W]), and the maximum surplus power (Q [W]) The maximum current (i [A]) at the time when power is supplied is determined, and the control by the (丙) (cutter) is performed at the maximum current (i [A]). The power control device of the described emergency power supply. The other non-important load is a direct current load, and a converter (Con), a direct current limiting circuit (CLDC), and a direct current output terminal are provided to generate power from the emergency power source of the generated power (P [W]). The received power is converted into direct current by the converter (Con),
While suppressing the current value of the icurrent [A] measured by the means of (ii) below the maximum current (i [A]) by the means of (Ding) and the current limiting circuit (CLDC) at the direct current, The power control device for an emergency power supply according to any one of claims 1 to 3 , wherein power is supplied from a DC output terminal to another non-important load by DC .