JP2014090653A - Power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply device for supplying an appropriate amount of power from a storage battery.SOLUTION: A power supply device having supply means 40 for supplying power of a main power supply 90 and a storage battery 83 to a load device 87 comprises: main conversion means 50 for converting power of the main power supply to DC power having predetermined specified voltage on the basis of upper limit information PL on electric energy to be output and outputting the converted DC power to the supply means; switchover means 54 for switching over a state to either of a state for outputting DC power of the storage battery to the supply means and a state of not outputting the DC power; sub-conversion means 51 for converting the DC power of the storage battery to DC power having specified voltage, and outputting the converted DC power after combining with the DC power output by the main conversion means to the supply means; and control means 70 for making the switchover means switchover the state to the state of outputting the DC power of the storage battery when detecting a state showing shortage of power supply in the DC power input to the supply means.

Description

  The present invention relates to a power supply device that supplies electric power, and more particularly to a power supply device that supplies electric power of a main power source and a storage battery to a load device.

  2. Description of the Related Art A power supply device that supplies power to a load by combining power from a plurality of different types of power supply devices is known. The power supply apparatus supplies power by changing or adjusting the distribution of power supplied from each power supply apparatus to a load according to the power consumption state, the power generation or charging state of each power supply apparatus, and the like.

  As such a power supply apparatus, Patent Literature 1 describes a DC hybrid power supply apparatus 100 shown in FIG. The DC hybrid power supply apparatus 100 includes a DC power supply apparatus 200 and a storage battery apparatus 300, and the DC power supply apparatus 200 and the storage battery apparatus 300 supply DC power to the load apparatus 400.

  Here, the DC power supply device 200 is a DC power supply device that uses DC power supplied from the fuel cell power generator 210, and includes a D / D converter 220, a current sensor 230, a voltage sensor 240, a storage unit 250, a constant power control signal. A generation device 260 and an output power level control signal generation device 270 are provided.

  The storage unit 250 stores information regarding the amount of power that the fuel cell power generator 210 should output. In addition, each of the current sensor 230 and the voltage sensor 240 detects a current value or a voltage value of the D / D converter 220 and outputs it to the constant power control signal generation device 260. Further, the constant power control signal generator 260 makes the product of the current value and the voltage value detected by each of the current sensor 230 and the voltage sensor 240 match the power value stored in the storage unit 250. Then, a signal is output to the D / D converter 220.

  That is, the DC hybrid power supply apparatus 100 is configured to supply a certain amount of DC power to the load apparatus 400 based on the information stored in the storage unit 250.

  The output power level control signal generation device 270 is configured to change the information stored in the storage unit 250 according to the voltage value detected by the voltage sensor 240. Specifically, when the load current IL value required by the load device 400 is remarkably increased and, as a result, the value of the voltage V1 reaches the allowable lower limit voltage value, it is stored in the storage unit 250. A signal for upwardly correcting the information regarding the current power value is output. Further, when the load current IL value is remarkably reduced and, as a result, the value of the voltage V1 reaches the allowable upper limit voltage value, the information on the power value stored in the storage unit 250 is corrected downward. The signal to be output is output.

  That is, the DC hybrid power supply device 100 is configured to be able to change or adjust the amount of power supplied by the DC power supply device 200 according to the amount of power required by the load device 400.

JP 7-320752 A

  However, in the DC hybrid power supply apparatus 100, the amount of power supplied from the storage battery device 300 is not changed or adjusted according to the amount of power required by the load device 400. There was a case to be supplied.

  Specifically, in a situation where the amount of power required by the load device 400 gradually increases without the value of the voltage V1 reaching the allowable upper limit voltage value, information on the power value stored in the storage unit 250 Is not changed. For this reason, the discharge current I1 value of the DC power supply device 200 does not fluctuate, and the power supplied from the DC power supply device 200 is maintained at a constant amount. On the other hand, the load current IL value gradually increases. That is, since the discharge current I2 value of the storage battery device 300 also gradually increases, there is a possibility that a current exceeding the allowable range is discharged from the storage battery device 300.

  Here, in a storage battery such as a lead storage battery, if electric power whose discharge current per unit time exceeds an allowable range is supplied from the storage battery to the load, there is a problem that a part of the electric power stored in the storage battery cannot be supplied to the load. There was a case. Furthermore, when power exceeding the allowable range is repeatedly supplied to the load, there is a possibility that the storage battery may deteriorate over time.

  This invention is made | formed in view of the said subject, The objective is to provide the electric power feeder which supplies the appropriate quantity of electric power from a storage battery.

  A power supply device according to the present invention is a power supply device having a supply means for supplying power from a main power source and a storage battery to a load device, and is based on upper limit information on the amount of power to be output, with a predetermined voltage that predetermines the power of the main power source. Main conversion means for converting to DC power and outputting to the supply means, switching means for switching the DC power of the storage battery to either the state of outputting to the supply means or the state of not outputting, and the DC power of the storage battery to the specified voltage A sub-conversion unit that converts to DC power and outputs to the supply unit in combination with the DC power output from the main conversion unit, and a switching unit that detects a state of insufficient power supply in the DC power input to the supply unit And a control means for switching to a state of outputting DC power of the storage battery.

  Preferably, when the control unit detects a power consumption state higher than a predetermined first threshold value in the DC power input to the supply unit, the control unit switches to a state in which the DC power of the storage battery is output.

  Preferably, the control means changes the upper limit information upward when detecting a power consumption state equal to or higher than a second threshold predetermined as a value higher than the first threshold in the direct current input to the supply means. To do.

  Furthermore, preferably, it has a charging means for supplying the power of the main power source to the storage battery.

  Still further preferably, the main power source is a commercial power source, the specified voltage is a voltage corresponding to the output voltage of the commercial power source, and the main conversion means rectifies AC power of the commercial power source into DC power. .

  Preferably, the supply means includes AC conversion means for converting input DC power into AC power, and supplies the AC power of the AC conversion means to the load device.

  Preferably, the power supply device includes a load, and the supply unit is configured to output input DC power to the AC conversion unit and the load.

  Preferably, when the control means detects a power consumption state higher than a predetermined first threshold in the DC power input to the supply means, the first power for switching the switching means to a state for outputting the DC power of the storage battery. In the DC power input to the adjusting means and the supplying means, when detecting a power consumption state higher than a predetermined first threshold, the second power adjusting means for changing the upper limit information upward, and the first or second power And selecting means for operating any one of the adjusting means.

  Further preferably, the selection unit operates either the first or second power adjustment unit according to a time zone.

  Still preferably, the selection unit supplies the power of the main power source to the storage battery when operating the second power adjustment unit.

  ADVANTAGE OF THE INVENTION According to this invention, the electric power feeder which is hard to produce troubles, such as being in the state which cannot supply a part of electric power which a storage battery accumulate | stores to a load, can be provided.

It is a figure which shows the structure of the electric equipment 80 which has the electric power feeding unit 10 which concerns on 1st Embodiment. It is a figure which shows the state of the main conversion means 50 and the switching means 54 which are set with respect to each electric energy PO supplied to the load unit 87. FIG. 7 is a flowchart showing a processing procedure of power adjustment means 75. 4 is a flowchart showing a processing procedure of a charging processing means 76. It is a figure which shows the structure of the electric power feeder 11 which concerns on 2nd Embodiment. It is a figure which shows the structure of the electric power feeder 12 which concerns on 3rd Embodiment. It is a figure which shows the structure of the electric equipment 800 which has the electric power feeding unit 600 which concerns on 4th Embodiment. FIG. 10 is a second diagram showing the states of main conversion means 50 and switching means 54 that are set for each amount of power PO supplied to the load unit 87. It is a flowchart which shows the process sequence of the electric power adjustment means 705. FIG. 10 is a flowchart illustrating a processing procedure of a selection unit 702. It is a figure which shows the structure of the electric power feeder 601 which concerns on 5th Embodiment. It is a figure which shows the structure of the electric power feeder 602 which concerns on 6th Embodiment. It is a figure which shows the structure of the conventional DC hybrid electric power feeder 100. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the processing contents, “step” is represented by “S”, and each processing is distinguished by a number.

[First Embodiment]
FIG. 1 shows a configuration of an electric device 80 having a power supply unit 10 according to the first embodiment, which will be described below.

  The electric device 80 includes a load unit 87, and is an electric device such as a refrigerator that operates by supplying DC power using the commercial power supply 90 as a main power source to the load unit 87. Furthermore, it has the input terminal 81 which inputs the alternating current power of the commercial power supply 90, the rectification means 82 which converts the alternating current power of the input terminal 81 into direct current power, the storage battery 83, such as a lead battery, and the electric power feeding unit 10. Here, in the electric device 80, the storage battery 83 may not be configured inside the electric device 80, but may be configured to input DC power from the storage battery in the DC power supply device, for example, by connecting to the DC power supply device.

  The power supply unit 10 is connected to the rectifying means 82 via the input terminal 20 to supply DC power to the load unit 87, and further connected to the storage terminal 83 and output connected to the load unit 87. The terminal 40 has three input / output terminals. Here, in the power supply unit 10, the DC power input at the input terminal 20 may be, for example, DC power from a DC power supply device.

  The connection terminal 30 inputs the DC power of the storage battery 83 to the power supply unit 10 and supplies the DC power converted for charging to the storage battery 83. The output terminal 40 is a supply means for supplying DC power to the load unit 87.

  The power supply unit 10 includes a main conversion unit 50, a sub conversion unit 51, a charging unit 55, voltage sensors 60 and 61, current sensors 65, 66 and 67, and a control unit 70.

  The main conversion means 50 is configured to step up or step down the DC power input from the input terminal 20 to a specified voltage of the load unit 87 and output the boosted or stepped DC power to the charging means 55 and the output terminal 40. ing. Further, the main conversion means 50 is configured to hold power upper limit information PL in which a preset upper limit of output power is defined, and limit output of DC power exceeding the power upper limit information PL. . Further, when the main conversion means 50 receives a control signal for changing the content of the power upper limit information PL from the control means 70, the main conversion means 50 is configured to change the setting of the power upper limit information PL based on the control signal. .

  Here, either the first limit value or the second limit value indicating the amount of power higher than the first limit value is set in the power upper limit information PL. Specifically, when the contract power of the commercial power supply 90 is 450 W, for example, either the first limit value in which a numerical value indicating 300 W is specified or the second limit value in which a numerical value indicating 450 W of the contract power is specified is either It is set in the power upper limit information PL. That is, by setting the first limit value in the allowable power information PL, the main conversion means 50 is in a state capable of outputting power up to 300 W (hereinafter referred to as “normal mode”). Further, by setting the second limit value in the allowable power information PL, it becomes possible to output the same power up to 450 W as the contract power (hereinafter referred to as “high output mode”).

  The sub-conversion means 51 boosts or steps down the DC power input from the connection terminal 30 to the specified voltage of the load unit 87, and combines the boosted or stepped-down DC power with the DC power output from the main conversion means 50 to output terminal 40. It is configured to output to. Further, the sub-converting means 51 has switching means 54 for switching between a “supply state” in which the DC power input from the connection terminal 30 is output and a “stop state” in which the DC power is not output. . Further, when receiving a control signal for switching the state of the switching unit 54 from the control unit 70, the sub-conversion unit 51 switches the switching unit 54 to the “supply state” or the “stop state” based on the control signal.

  In order to charge the storage battery 83, the charging unit 55 converts the DC power of the main conversion unit 50 into DC power for charging based on a control signal output from the control unit 70, and converts the DC power to the connection terminal 30. Is set to “charging state” to be output to “charging state” or “charging stopping state” to stop the output of DC power for charging.

  The voltage sensor 60 detects the input voltage at the output terminal 40 and outputs a detection signal corresponding to the input voltage to the control means 70. The voltage sensor 61 detects the output voltage of the connection terminal 30 and outputs a detection signal corresponding to the output voltage to the control means 70.

  The current sensor 65 detects the output current of the main conversion unit 50 and outputs a detection signal corresponding to the output current to the control unit 70. The current sensor 66 detects the output current of the sub-conversion unit 51 and outputs a detection signal corresponding to the output current to the control unit 70. Further, the current sensor 67 detects the output current of the charging unit 55 and outputs a detection signal corresponding to the output current to the control unit 70.

  The control means 70 is a processor that receives detection signals output from the voltage sensors 60 and 61 and the current sensors 65, 66 and 67 and outputs control signals to the main conversion means 50, the sub-conversion means 51 and the charging means 55. The power adjustment means 75 and the charge processing means 76 are included.

  The power adjustment means 75 inputs the detection signals detected by the voltage sensor 60 and the current sensors 65 and 66 in order to adjust the distribution of the power supplied to the load unit 87 in the commercial power supply 90 and the storage battery 83 that are the main power supply. A control signal is output to the main conversion means 50 and the sub-conversion means 51 according to the detection signal.

  The charging processing unit 76 inputs detection signals detected by the voltage sensor 61 and the current sensor 67 in order to supply DC power for charging to the storage battery 83, and outputs a control signal to the charging unit 55 according to the detection signals. To do.

  FIG. 2 shows the states of the main conversion means 50 and the switching means 54 that are set for each power amount PO supplied to the load unit 87, and the processing outline of the power adjustment means 75 will be described below with reference to FIG. Explained.

  The power adjusting means 75 integrates the voltage value detected by the voltage sensor 60 and the current value obtained by adding the current value detected by the current sensor 65 and the current value detected by the current sensor 66, thereby providing an output terminal. The amount of power PO output to the load unit 87 via 40 is calculated. And the state set to the main conversion means 50 and the switching means 54 is determined by comparing this electric energy PO with the preset 1st threshold value or 2nd threshold value.

  Specifically, as shown in FIG. 2, when the power amount PO is less than the first threshold, the main conversion means 50 is set to “normal mode” and the switching means 54 is set to “stop state”. When the power amount PO is determined to be greater than or equal to the first threshold value and less than the second threshold value, the main conversion means 50 is set to “normal mode” and the switching means 54 is set to “supply state”. Further, when it is determined that the power amount PO is greater than or equal to the second threshold value, the main conversion means 50 is set to “high output mode” and the switching means 54 is set to “supply state”.

  Here, the first threshold value is set in advance to be approximately the same value as the first limit value set in the allowable power information PL. In addition, the second threshold value is set in advance to be approximately the same value as the value obtained by adding the maximum power amount that can be supplied by the storage battery 83 to the first threshold value.

  That is, when the power adjustment means 75 determines that the power consumption of the load unit 87 is less than the first threshold value, it supplies power only from the commercial power supply 90 that is the main power supply without supplying power from the storage battery 83. Thus, the main converting means 50 and the sub converting means 51 are controlled. When determining that the power consumption of the load unit 87 is not less than the first threshold value and less than the second threshold value, the main conversion means 50 and the sub-conversion means 51 are controlled to supply power from the commercial power supply 90 and the storage battery 83. doing. Further, when it is determined that the power consumption of the load unit 87 is equal to or greater than the second threshold value, the “high output mode” that enables the amount of power supplied from the commercial power supply 90 to the contract power limit is set. The main conversion means 50 and the sub conversion means 51 are controlled so that electric power is supplied from the storage battery 83.

  FIG. 3 is a flowchart showing the processing procedure of the power adjustment means 75, which will be described below.

  The power adjustment means 75 first determines whether the setting state of the main conversion means 50 is the “normal mode” or the “high output mode” (S100).

  If it is determined in S100 that the setting state of the main conversion means 50 is “high output mode”, it is determined whether or not the power amount PO equal to or greater than the second threshold has been detected (S101), and greater than or equal to the second threshold. When the amount of power PO is detected, the process proceeds to S100 described above.

  On the other hand, if the amount of power PO less than the second threshold is detected in the determination of S101, a control signal for changing the value of the allowable power information PL to the first limit value is output to the main conversion means 50 (S102). The process proceeds to S100 described above.

  That is, in S101 and S102 described above, when the power amount PO equal to or greater than the second threshold is detected, the main conversion means 50 is maintained in the “high output mode” and the power amount PO less than the second threshold is detected. If it is, the main conversion unit 50 is changed to the “normal mode”.

  If it is determined in S100 that the setting state of the main converter 50 is “normal mode”, it is determined whether or not the voltage value detected by the voltage sensor 60 is a specified voltage (S110). Here, the determination process determines whether or not “normal state” in which sufficient power is supplied to the load unit 87. If a voltage lower than the specified voltage is detected, “insufficient supply” is determined. It is determined that the state has fallen.

  If it is determined in S110 that the state is “normal state”, it is determined whether or not a power amount PO equal to or greater than the second threshold is detected (S111).

  Control in which the value of the allowable power information PL is changed to the second limit value when it is determined as “insufficient supply state” in the determination in S110, or when the power amount PO equal to or greater than the second threshold is detected in the determination in S111. The signal is output to the main conversion means 50 (S112). That is, the main conversion means 50 is changed to the “high output mode”.

  On the other hand, when the power amount PO less than the second threshold is detected in the determination of S111, it is determined whether or not the power amount PO equal to or greater than the first threshold is detected (S113).

  Subsequent to the process of S112 or when the power amount PO equal to or greater than the first threshold is detected in the determination of S113, a control signal for setting the switching means 54 to the “supply state” is output to the sub-conversion means 51 ( S114), the process proceeds to S100 described above.

  On the other hand, if a power amount PO less than the first threshold is detected in S113, a control signal for setting the switching means 54 to the “stop state” is output to the sub-converting means 51 (S115), and the above-described S100 Move on to processing.

  As described above, in the electric device 80 having the power supply unit 10 according to the first embodiment, when detecting a state where the power supplied to the load device is insufficient, the electric device 80 switches to the “supply state” in which power is supplied from the storage battery 83. Yes. Further, according to the power consumption of the load unit 87, the states of the main conversion means 50 and the switching means 54 are set, the power distribution supplied by the commercial power supply 90 and the storage battery 83 is adjusted, and the power is supplied to the load unit 87. ing.

  That is, an appropriate amount of electric power is supplied from the storage battery 83 according to the load fluctuation. From this, it is possible to make it difficult for troubles such as a state in which a part of the power stored in the storage battery 83 cannot be supplied to the load.

  FIG. 4 shows a flowchart showing the processing procedure of the charging processing means 76, which will be described below. Here, the charging processing unit 76 starts processing when, for example, a sensor (not shown) detects a time zone in which the electric device 80 can be sufficiently operated with a small amount of power supply.

  First, the charging processing unit 76 outputs a control signal for setting to a “charging state” in which DC power for charging is output to the storage battery 83 to the charging unit 55 (S200).

  Subsequent to S200, the process waits until the voltage value detected by the voltage sensor 61 reaches a specified voltage for charging (S201).

  Subsequent to S201, the process waits until the current value detected by the current sensor 67 becomes equal to or less than the specified current indicating full charge (S202).

  Subsequent to S202, a control signal for setting to a “charge stop state” in which DC power for charging is not output to the storage battery 83 is output to the charging means 55 (S203), and the process is terminated.

  As described above, the electric apparatus 80 including the power supply unit 10 according to the first embodiment is configured to be able to supply charging direct current power to the storage battery 83.

[Second Embodiment]
FIG. 5 shows a configuration of the power supply apparatus 11 according to the second embodiment, which will be described below. Note that the same reference numerals are assigned to the same components as those described above. Therefore, description of these components is omitted.

  Here, in the power supply device 11, in comparison with the power supply unit 10 described above, the power supply unit 10 that supplies the DC power to the load unit 87 via the output terminal 40 is a supply unit that includes an AC conversion unit 44 and an output terminal 43. The power supply device 11 is configured to supply AC power to the load device 88 via 41.

  Further, the input terminal 20 for inputting the DC power of the rectifier 82 is different from the input terminal 21 for inputting the AC power of the commercial power supply 90. The main conversion means 50 that steps up or down the input DC power to the specified voltage of the load unit 87 and outputs it to the output terminal 40 is the main conversion means 52 that rectifies the input AC power and converts it into DC power. It is different in point. The sub-converting means 51 that boosts or steps down the input DC power to the specified voltage of the load unit 87 is the sub-converting means 53 that boosts or steps down the input DC power to a voltage corresponding to the output voltage of the commercial power supply 90. It is different in point.

  Further, the control means 70 for outputting control signals to the main conversion means 50, the sub conversion means 51 and the charging means 55 is the control means 71 for outputting control signals to the main conversion means 52, the sub conversion means 53 and the charging means 55. It is different in point. Further, the power adjustment unit 75 that outputs a control signal to the main conversion unit 50 and the sub conversion unit 51 is different from the power adjustment unit 77 that outputs a control signal to the main conversion unit 52 and the sub conversion unit 53. Here, the processing content of the power adjustment unit 77 is the same as the processing content described above with reference to FIGS. 2 and 3, but the main conversion unit 50 or the sub-conversion unit 51 that is the output destination of the control signal is the main conversion unit 52 or The description is omitted because it is different only in the sub-conversion means 53.

  The power feeding device 11 includes a supply unit 41 including an AC conversion unit 44 and an output terminal 43, and supplies AC power having a commercial power supply 90 as a main power source to the load device 88 via the supply unit 41. In addition to the output terminal 43, the power supply device 11 includes an input terminal 21 that is connected to the commercial power supply 90 and receives AC power, and a connection terminal 30 that is connected to the storage battery 83.

  Further, the power supply apparatus 11 includes a main conversion unit 52, a sub conversion unit 53, a charging unit 55, voltage sensors 60 and 61, current sensors 65, 66 and 67, and a control unit 71.

  The main conversion unit 52 is configured to rectify AC power input from the input terminal 21 into DC power and output the DC power to the charging unit 55 and the supply unit 41. The main conversion means 52 is configured to hold power upper limit information PL in which a preset upper limit of output power is defined, and limit the output of DC power exceeding the power upper limit information PL. Further, when the main conversion means 52 receives a control signal for changing the content of the power upper limit information PL from the control means 71, the main conversion means 52 is configured to change the setting of the power upper limit information PL based on the control signal.

  The sub-conversion unit 53 boosts or steps down the DC power input from the connection terminal 30 to a voltage corresponding to the output voltage of the commercial power supply 90, and combines the boosted or stepped-down DC power with the DC power output from the main conversion unit 52. It is configured to output to the supply means 41. The sub-conversion unit 53 includes a switching unit 54 that switches between a “supply state” in which the DC power input from the connection terminal 30 is output and a “stop state” in which the DC power is not output. . Further, when receiving a control signal for switching the state of the switching unit 54 from the control unit 71, the sub-conversion unit 53 switches the switching unit 54 to the “supply state” or the “stop state” based on the control signal.

  The supply means 41 receives the DC power combined with the main conversion means 52 and the sub-conversion means 53 and converts it into AC power similar to that of a commercial power supply, and loads the AC power of the AC conversion means 44 It has an output terminal 43 that supplies to the device 88.

  The control means 71 is a processor that receives detection signals output from the voltage sensors 60 and 61 and the current sensors 65, 66 and 67 and outputs control signals to the main conversion means 52, the sub-conversion means 53 and the charging means 55. The power adjustment unit 77 and the charge processing unit 76 are included.

  The power adjustment unit 77 inputs the detection signals detected by the voltage sensor 60 and the current sensors 65 and 66 in order to adjust the distribution of the power supplied to the load device 88 in the commercial power supply 90 and the storage battery 83 that are the main power supply. In response to the detection signal, a control signal is output to the main conversion means 52 and the sub conversion means 53.

  As described above, in the power supply apparatus 11 according to the second embodiment, the power of the commercial power supply 90 and the storage battery 83 that are the main power is converted to the same AC power as that of the commercial power supply, and the converted AC power is output to the output terminal. 43 is configured to be able to be supplied from 43.

  For this reason, the electrical device can be operated by connecting a general electrical device that operates with a commercial power source to the output terminal 43.

[Third Embodiment]
FIG. 6 shows the configuration of the power feeding device 12 according to the third embodiment, which will be described below. Note that the same reference numerals are assigned to the same components as those described above. Therefore, description of these components is omitted.

  Here, the power supply apparatus 12 is different from the above-described power supply apparatus 11 in that a load unit 89 and load conversion means 58 that converts power into operation of the load unit 89 are added. Further, the supply means 42 configured to output the input DC power to the AC conversion means 44 without branching is configured to output to the AC conversion means 44 and the load conversion means 58. Is different.

  As described above, the power supply apparatus 12 according to the third embodiment includes the load unit 89, and the load connected to the load unit 89 and the output terminal 43 from the commercial power supply 90 and the storage battery 83 that are main power supplies. The device 88 is configured to be supplied.

  From this, it can be set as the goods aspect of the electric power feeder 12, and the aspect of the electric equipment represented by the refrigerator. Furthermore, the electric power feeder 12 which became the aspect of this electric equipment can operate this electric equipment by connecting the general electric equipment which operates with a commercial power source.

[Fourth Embodiment]
FIG. 7 shows a configuration of an electric device 800 having a power supply unit 600 according to the fourth embodiment, which will be described below. Note that the same reference numerals are assigned to the same components as those described above. Therefore, description of these components is omitted.

  Here, the electrical device 800 is different from the electrical device 80 described above in that the power supply unit 10 that supplies DC power to the load unit 87 via the output terminal 40 is a power supply unit 600. The power supply unit 600 is different from the power supply unit 10 described above in that the control unit 70 is the control unit 700.

  The control means 700 is a processor that receives detection signals output from the voltage sensors 60 and 61 and the current sensors 65, 66, and 67 and outputs control signals to the main conversion means 50, the sub-conversion means 51, and the charging means 55. , Selection means 702, timing means 708, power adjustment means 75, power adjustment means 705 and charge processing means 76 described above with reference to FIGS. 2 and 3.

  The selection unit 702 executes a power adjustment unit selection process for operating either the power adjustment unit 75 or the power adjustment unit 705 and stopping the other.

  When the time measuring means 708 detects the preset first time or second time, it outputs the detection signal to the selection means 702. Specifically, for example, “6:00 am” is set as the first time, and “1:00 am” is set as the second time. That is, the first time and the second time so that the time zone from the first time to the second time is the “daytime” time zone, and the time zone from the second time to the first time is the “nighttime” time zone. The time is set. In addition, the user can change the settings of the first time and the second time.

  Similarly to the power adjustment means 75, the power adjustment means 705 includes a voltage sensor 60 and current sensors 65 and 66 for adjusting the distribution of power supplied to the load unit 87 in the commercial power supply 90 and the storage battery 83 that are main power supplies. The detected detection signal is input, and a control signal is output to the main conversion means 50 and the sub conversion means 51 in accordance with the detection signal.

  FIG. 8 shows the states of the main conversion means 50 and the switching means 54 that are set for each power amount PO supplied to the load unit 87 in the power adjustment means 705. The processing outline of 705 will be described below.

  The power adjusting means 705 integrates the voltage value detected by the voltage sensor 60 and the current value detected by the current sensor 65 and the current value detected by the current sensor 66, thereby integrating the output terminal. The amount of power PO output to the load unit 87 via 40 is calculated. And the state set to the main conversion means 50 and the switching means 54 is determined by comparing this electric energy PO with the preset 1st threshold value or 3rd threshold value.

  Specifically, as shown in FIG. 8, when the power amount PO is less than the first threshold value, the main conversion means 50 is set to “normal mode” and the switching means 54 is set to “stop state”. When the power amount PO is determined to be greater than or equal to the first threshold value and less than the third threshold value, the main conversion means 50 is set to “high output mode” and the switching means 54 is set to “stop state”. Further, when it is determined that the power amount PO is equal to or greater than the third threshold value, the main conversion unit 50 is set to the “high output mode” and the switching unit 54 is set to the “supply state”.

  Here, the first threshold value is set in advance to be approximately the same value as the first limit value set in the allowable power information PL. Further, the third threshold value is set in advance to be approximately the same value as the second limit value set in the allowable power information PL. That is, when the power adjustment unit 705 determines that the power consumption of the load unit 87 is less than the first threshold value, the power adjustment unit 705 supplies power only from the commercial power supply 90 that is the main power supply without supplying power from the storage battery 83. Thus, the main converting means 50 and the sub converting means 51 are controlled. When it is determined that the power consumption of the load unit 87 is not less than the first threshold value and less than the third threshold value, the main power source means 50 is changed to the “high output mode” and power is supplied only from the commercial power source 90 as the main power source. The main converting means 50 and the sub converting means 51 are controlled so as to be supplied. Further, when it is determined that the power consumption of the load unit 87 is equal to or greater than the third threshold, the switching means 54 is changed to the “supply state” so that power is supplied from the storage battery 83, and power is supplied from the commercial power supply 90 and the storage battery 83. The main conversion means 50 and the sub conversion means 51 are controlled so as to perform the above.

  As described above, the power adjustment unit 705 does not supply power from the storage battery 83 and does not supply power when the power consumption is less than the third threshold even if the power consumption is equal to or higher than the first threshold. Power is supplied only from the power supply 90.

  Therefore, compared with the power adjustment means 75, the power of the commercial power supply 90, which is the main power source, such as operating the charge processing means 76 to charge the storage battery 83 at night when the power consumption of the load unit 87 is low. Can be used effectively.

  FIG. 9 is a flowchart showing the processing procedure of the power adjustment unit 705, which will be described below.

  The power adjustment unit 705 first determines whether the setting state of the switching unit 54 is the “supply state” or the “stop state” (S300).

  If it is determined in S300 that the setting state of the switching unit 54 is “supply state”, it is determined whether or not a power amount PO equal to or greater than the third threshold is detected (S301), and power equal to or greater than the third threshold. When the amount PO is detected, the process proceeds to S300 described above.

  On the other hand, if it is determined in S301 that the amount of power PO less than the third threshold is detected, a control signal for setting the switching means 54 to the “stop state” is output to the sub-converting means 51 (S302). The process proceeds to S300.

  That is, in S301 and S302 described above, when the power amount PO equal to or greater than the third threshold value is detected, the switching unit 54 is maintained in the “supply state” and the power amount PO less than the third threshold value is detected. In this case, a process for changing the switching means 54 to the “stop state” is performed.

  If it is determined in S300 that the setting state of the switching means 54 is “stopped”, it is determined whether or not the voltage value detected by the voltage sensor 60 is a specified voltage (S310). Here, the determination process determines whether or not “normal state” in which sufficient power is supplied to the load unit 87. If a voltage lower than the specified voltage is detected, “insufficient supply” is determined. It is determined that the state has fallen.

  If it is determined in S310 that the state is “normal state”, it is determined whether or not a power amount PO equal to or greater than a third threshold is detected (S311).

  If it is determined in S310 that the supply is insufficient, or if a power amount PO that is equal to or greater than the third threshold is detected in S311, a control signal for setting the switching means 54 to the “supply state” is set as a sub signal. The data is output to the conversion means 51 (S312).

  On the other hand, when the power amount PO less than the third threshold is detected in the determination of S311, it is determined whether or not the power amount PO equal to or greater than the first threshold is detected (S313).

  Subsequent to the process of S312 or when the power amount PO equal to or greater than the first threshold is detected in the determination of S313, a control signal for changing the value of the allowable power information PL to the second limit value is sent to the main conversion means 50. Output (S314), and the process proceeds to S300 described above. That is, in the process of S314, the main conversion means 50 is changed to the “high output mode”.

  On the other hand, when the amount of power PO less than the first threshold is detected in S313, a control signal for changing the value of the allowable power information PL to the first limit value is output to the main conversion means 50 (S315), The process proceeds to S100 described above. That is, in the process of S315, the main conversion means 50 is changed to “normal mode”.

  FIG. 10 is a flowchart showing the processing procedure of the selection means 702, which will be described below. The selection unit 702 first waits until a time detection signal is output from the time measuring unit 708 (S400), and whether the output signal is detection of the first time or detection of the second time. Is determined (S401).

  If it is determined in S401 that the first time is detected, the second power adjustment unit 705 is stopped and the first power adjustment unit 75 is operated (S402, S403), and the process proceeds to the above-described processing of S400. .

  On the other hand, if it is determined in S401 that the second time is detected, the first power adjustment unit 75 is stopped and the second power adjustment unit 705 is operated (S404, S405). Further, the charging processing means 76 described above with reference to FIG. 4 is operated (S406), and the process proceeds to the above-described processing of S400.

  As described above, in the electric device 800 having the power supply unit 600 according to the fourth embodiment, when the power consumption state higher than the predetermined first threshold is detected, the power adjustment unit 75 that switches the switching unit 54 to the “supply state”. have. In addition, the electric device 800 includes a power adjustment unit 705 that switches the main conversion unit 50 to the “high output mode” when a power consumption state higher than a predetermined first threshold is detected. Furthermore, it has the selection means 702 which performs the selection process of the power adjustment means which operates either the power adjustment means 75 or the power adjustment means 705.

  For this reason, in the electric device 800 having the power supply unit 600 according to the fourth embodiment, for example, the power distribution supplied by the commercial power supply 90 and the storage battery 83 according to the time zone, such as the day time zone or the night time zone. Is adjusted appropriately.

[Fifth Embodiment]
FIG. 11 shows a configuration of a power feeding apparatus 601 according to the fifth embodiment, which will be described below. Note that the same reference numerals are assigned to the same components as those described above. Therefore, description of these components is omitted.

  Here, in comparison with the above-described power supply unit 600, the power supply device 601 is a supply unit in which the power supply unit 600 that supplies DC power to the load unit 87 via the output terminal 40 is composed of the AC conversion unit 44 and the output terminal 43. The power supply device 601 supplies AC power to the load device 88 via 41.

  Further, the control unit 700 is different in that the control unit 700 is a control unit 701 including a selection unit 703, a timing unit 709, a power adjustment unit 77, a power adjustment unit 707, and a charge processing unit 76.

  Further, the time measuring means 709 constituting the control means 701 is different in that the detection signal of the time measuring means 709 is output to the selecting means 703 in comparison with the time measuring means 708 described above.

  Further, the processing contents of the power supply adjustment means 707 constituting the control means 701 are the same as the processing contents described above with reference to FIGS. 8 and 9, except that the main conversion means 50 or the sub-conversion means 51, which is the output destination of the control signal, respectively. Since it differs only in that it is the main conversion means 52 or the sub-conversion means 53, the description is omitted.

  Furthermore, the processing contents of the selection means 703 constituting the control means 701 are the same as the processing contents described above with reference to FIG. 10, the first power adjustment means 75 to be operated or stopped is the power adjustment means 77, and the second Since the power adjustment means 705 is different only in that it is the power adjustment means 707, the description is omitted.

  As described above, in the power feeding device 601 according to the fifth embodiment, the power of the commercial power supply 90 and the storage battery 83 that are the main power is converted into the same AC power as that of the commercial power supply, and the converted AC power is output to the output terminal. 43 is configured to be able to be supplied from 43.

  For this reason, the electrical device can be operated by connecting a general electrical device that operates with a commercial power source to the output terminal 43.

[Sixth Embodiment]
FIG. 12 shows a configuration of a power supply apparatus 602 according to the sixth embodiment, which will be described below. Note that the same reference numerals are assigned to the same components as those described above. Therefore, description of these components is omitted.

  Here, the power supply apparatus 602 is different from the above-described power supply apparatus 601 in that a load unit 89 and load conversion means 58 that converts power into operation of the load unit 89 are added. Further, the supply means 42 configured to output the input DC power to the AC conversion means 44 without branching is configured to output to the AC conversion means 44 and the load conversion means 58. Is different.

  As described above, the power supply apparatus 602 according to the sixth embodiment includes the load unit 89, and loads connected to the load unit 89 and the output terminal 43 from the commercial power supply 90 and the storage battery 83 that are main power supplies. The device 88 is configured to be supplied.

  From this, it can be set as the goods aspect of the electric power feeder 602, and the aspect of the electric equipment represented by the refrigerator etc. Furthermore, the power supply apparatus 602 that is in the state of the electric device can operate the electric device by connecting a general electric device that operates with a commercial power source.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 10 Feeding unit 11, 12 Feeding device 20, 21, 81 Input terminal 30 Connection terminal 40, 43 Output terminal 41, 42 Supply means 44 AC conversion means 50, 52 Main conversion means 51, 53 Sub conversion means 54 Switching means 55 Charging means 58 Load conversion means 60, 61 Voltage sensors 65, 66, 67 Current sensors 70, 71 Control means 75, 77 Power adjustment means 76 Charging processing means 80 Electric equipment 82 Rectification means 83 Storage batteries 87, 89 Load unit 88 Load device
90 Commercial Power Supply 600 Power Supply Units 601 and 602 Power Supply Devices 700 and 701 Control Units 702 and 703 Selection Units 705 and 707 Power Adjustment Units 708 and 709 Time Measurement Unit 800 Electric Equipment

Claims (10)

A power supply device having a supply means for supplying power of a main power source and a storage battery to a load device,
Based on upper limit information on the amount of power to be output, main power means for converting the power of the main power source into DC power of a predetermined voltage that is predetermined, and outputting to the supply means,
Switching means for switching the state of the direct current power of the storage battery to either the state of outputting to the supply means or the state of not outputting;
Sub-conversion means for converting the direct-current power of the storage battery into direct-current power of the specified voltage, and combining the direct-current power output by the main conversion means and outputting to the supply means;
And a control unit that switches the switching unit to a state of outputting the DC power of the storage battery when a state indicating insufficient supply of power is detected in the DC power input to the supply unit. .   When the control means detects a power consumption state higher than a predetermined first threshold in the DC power input to the supply means, the control means switches the switching means to a state of outputting the DC power of the storage battery. The power feeding device according to claim 1.   The control means changes the upper limit information upward when it detects a power consumption state equal to or higher than a second threshold predetermined as a value higher than the first threshold in the direct current input to the supply means. The power feeding device according to claim 2.   The power supply apparatus according to claim 1, further comprising a charging unit that supplies power of the main power source to the storage battery. The main power source is a commercial power source, and the specified voltage is a voltage corresponding to an output voltage of the commercial power source,
The power feeding apparatus according to claim 1, wherein the main conversion unit rectifies AC power of the commercial power source into DC power.   The said supply means has AC conversion means to convert the input DC power into AC power, and supplies the AC power of the AC conversion means to the load device. Power supply device. The power supply device incorporates a load,
The power supply apparatus according to claim 6, wherein the supply unit is configured to output input DC power to the AC conversion unit and the load. The control means includes
First power adjusting means for switching the switching means to a state of outputting DC power of the storage battery when detecting a power consumption state higher than a predetermined first threshold in the DC power input to the supply means;
A second power adjusting means for changing the upper limit information upward when detecting a power consumption state higher than a predetermined first threshold in the DC power input to the supply means;
The power supply apparatus according to claim 1, further comprising a selection unit that operates one of the first and second power adjustment units.   The power supply apparatus according to claim 8, wherein the selection unit operates one of the first and second power adjustment units according to a time zone.   The power supply apparatus according to claim 8 or 9, wherein the selection unit supplies power of the main power source to the storage battery when operating the second power adjustment unit.