JP3519699B2 - Energy control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for controlling an energy storage amount and a movement state.

[0002]

2. Description of the Related Art Conventionally, energy such as electric power is purchased from an energy supply path such as a distribution line, a solar cell,
It was taken in from an energy intake means such as a wind power generator. The energy purchased from the energy supply path is consumed as it is, and the energy taken in from the outside is temporarily stored in the energy storage means such as a storage battery or is consumed as it is by the energy consumption means.

[0003]

However, according to the prior art, the energy taken in is temporarily stored in the energy storage means and then consumed as it is, or the energy consumed is exceeded or exceeded. It was just sent back to the energy supply path.

For this reason, although a large amount of energy is taken in by an energy intake means such as a solar cell, the amount of energy purchased does not decrease significantly, or a large amount of profit cannot be obtained by selling energy. There was a problem.

The present invention seeks to solve the above problems and maximize the benefits gained from handling energy.

[0006]

Energy control devices SUMMARY OF THE INVENTION The invention of claim 1, cools the refrigerant by power energy, or a heat pump for heating, cooling, or by inhalation of heated refrigerant after the heat exchange, the A heat storage tank for heat storage that discharges a refrigerant, a heat exchanger for air conditioning that sucks the cooled or heated refrigerant and exchanges heat, and then discharges the refrigerant, generates electric power energy, and includes the above heat pump It comprises a power generating means for supplying electric power energy to the electric power consuming means and an energy purchasing means for purchasing energy from an energy supply path and supplying the electric energy to the electric power consuming means including the heat pump. Night determining means for determining the night, and the energy purchased at the night, by driving the heat pump, to heat or cool the refrigerant, the cooling, Is a heat storage means for supplying a heated refrigerant to the heat storage tank, a high price time zone determination means for determining a high price time zone when the purchased energy is high price, and an energy purchase means for the high price time zone. By the supply means for supplying and consuming the electric power energy from the power generation means to the power consumption means without consuming the energy purchased by the power generation means, and the electric power energy supplied from the power generation means during the high price period, the heat storage The gist of the present invention is to provide a heat radiating means for discharging the refrigerant from the tank and supplying the refrigerant to the heat exchanger.

The energy control device according to the second aspect of the present invention is a heat pump for cooling or heating the refrigerant by electric power energy, and a heat pump for sucking the cooled or heated refrigerant and exchanging the heat, and then discharging the refrigerant. A heat storage tank, a heat exchanger for air conditioning that sucks a cooled or heated refrigerant and exchanges heat, then discharges the refrigerant, generates electric power energy, and supplies the electric energy to the electric power consuming means including the heat pump. An energy purchase means for supplying power to the power generation means and an energy supply path to supply electric energy to the power consumption means including the heat pump, and an electric power is transmitted to the energy supply path for purchase. And a power transmission means,
The nighttime determining means for determining the nighttime when the energy to be purchased is the cheapest, and the heat pump driven by the energy purchased at the nighttime to heat or cool the refrigerant, and to cool or cool the heated refrigerant. Energy storage means for supplying heat to the heat storage tank, high price time zone determination means for determining a high price time zone when the purchased energy becomes high price, and energy purchased by the energy purchase means during the high price time zone Without the power generation means to supply and consume the power energy from the power generation means to the power consumption means, and the power energy supplied from the power generation means during the high price time period, the refrigerant from the heat storage tank Of the electric power generated by the heat radiating means that is discharged and supplied to the heat exchanger and the electric power generated by the power generating means, the amount that is supplied to the power consuming means is calculated. The surplus amount of power had to subject matter that a generated power surplus transmission means for transmitting to said power transmitting means.

[0008] energy control device of the invention of claim 3, claim 1, wherein the power energy supplied from said power generating means to the high price time period, to the addition operation means for driving the heat pump, Alternatively, the gist is the energy control device according to claim 2 .

[0009]

[Action] energy control device of the first aspect of the present invention, the night between determining means, when the energy energy purchase means purchase from the supply path of energy is determined to be the most inexpensive nighttime heat storage means the purchases Energy,
The heat pump included in the power consumption means is driven to cool or heat the refrigerant, and the refrigerant is supplied to the heat storage tank. The refrigerant supplied to the heat storage tank is drawn into the heat storage tank, exchanges heat, and then discharged.

On the other hand, when the high price time zone judging means judges that the energy purchased by the energy purchasing means from the energy supply path is in a high price time zone where the price becomes high, the supplying means makes the power generating means generate electric power. Electric power energy is supplied to the consumption means for consumption. As a result, the energy purchased by the energy purchasing means is not consumed during the high price period.

Further, during the high price period, the heat radiating means discharges the refrigerant from the heat storage tank and supplies it to the heat exchanger for air conditioning.
This heat exchanger draws in a cooled or heated refrigerant, exchanges heat with the refrigerant, and then discharges the refrigerant.

As a result, during the high price period, the generated power energy covers the power energy supplied to the power consumption means, and the air conditioner heat exchanger performs cooling and heating.

In the energy control device according to the second aspect of the invention, when the night determining means determines that the energy purchased by the energy purchasing means from the energy supply path is the cheapest night, the heat storage means purchases the energy. The energy drives the heat pump included in the power consumption means,
The refrigerant is cooled or heated and this refrigerant is supplied to the heat storage tank. The refrigerant supplied to the heat storage tank is drawn into the heat storage tank, exchanges heat, and then discharged.

On the other hand, when the high price time zone judging means judges that the energy purchased by the energy purchasing means from the energy supply channel is in a high price time zone in which the price is high, the generated power supply means first generates power. The power energy is supplied from the means to the power consuming means and consumed.

Further, in the high price period, the heat radiating means discharges the refrigerant from the heat storage tank by the electric energy supplied from the power generating means and supplies the refrigerant to the heat exchanger for air conditioning. This heat exchanger draws in a cooled or heated refrigerant, exchanges heat with the refrigerant, and then discharges the refrigerant.

As a result, in the high price period, the generated power energy covers the power energy supplied to the power consumption means, and the air conditioner heat exchanger performs cooling and heating.

Further, the generated power surplus power transmission means causes the power transmission means to transmit the surplus power amount excluding the amount of the power generated by the power generation means, which is supplied to the power consumption means. Therefore,
The surplus of the energy obtained from power generation can be transmitted and purchased, and the price can be obtained.

In the energy control apparatus according to the third aspect of the present invention, the driving means drives the heat pump by the electric energy supplied from the power generating means during the high price period. As a result, in the high price period, the heat pump is driven by the electric energy obtained by the power generation to cool or heat the refrigerant, and the air conditioner heat exchanger performs cooling and heating.

[0019]

EXAMPLES Examples of the present invention will be described below. FIG. 1 is an overall configuration diagram of a home energy control system 1.

The house energy control system 1 comprises a pull-in meter unit 3, a pull-in switch unit 5, a solar cell unit 7, a power unit 9, an air conditioner 11, a water heater 13, and a controller 15. There is.

FIG. 2 is a block diagram of the retractable meter unit 3. The retractable meter unit 3 has a primary side terminal 3A.
1 is connected to the lead-in port 17 of the house, and the secondary side terminal 3B is connected to the lead-in electromagnetic switch 19. The retractable meter unit 3 includes a voltage sensor 3
C, current sensors 3D and 3E, and electric energy calculation device 3F
And a display device 3G. Electric energy calculation device 3F
Calculates the amount of electric power based on the detection values of the voltage sensor 3C and the current sensors 3D and 3E. The display device 3G includes display units 3GA, 3GB, 3GC, 3GD, and displays the first to fourth types of electric energy. Type 1 power is daytime power consumption, Type 2 power is nighttime power consumption, Type 3 power is daytime power transmission, and Type 4 power is nighttime. It is the amount of transmitted power. As shown in FIG. 1, the pull-in switch unit 5 includes a pull-in electromagnetic switch 19, a current sensor 21, and branch switches 23A, 23B, 23C and 23D. The air conditioner 11 is connected to the branch switch 23A, and the water heater 13 is connected to the branch switch 23B. An indoor lighting circuit (not shown) is connected to the branch switches 23C and 23D. Current sensor 21
Is interposed between the pull-in switch 19 and the branch switches 23A to 23D, and is connected to the control device 15.

The retractable electromagnetic switch 19 is provided in the controller 15
The power unit 9 is connected to the secondary side of the power unit 9 via a hand switch 25.

The solar cell unit 7 is a battery panel 7A.
And a panel support 7B and a current collector 7C.
The current collector 7C is connected to the solar cell element of the battery panel 7A, collects the electric power generated by the solar cell element, and transmits the electric power to the power unit 9.

FIG. 3 is a block diagram of the power unit 9.
The power unit 9 includes a solar battery charging unit 27, a power selling charging unit 29, a storage battery unit 31, an inverter unit 33, an input / output switching unit 35, a communication interface 37, a voltage sensor 39, and current sensors 41, 43. , 45, 47 and a terminal portion 49.

The terminal portion 49 includes terminals PS, POA, PO.
B, POT, PIA, PIB are provided. Terminal PS
Are connected to the control device 15, as shown in FIG. The terminals POA, POB and POT are connected to the hand switch 25. The terminals PIA and PIB are connected to the solar cell unit 7.

The solar cell charging unit 27 has a solar cell connecting terminal 27A and an output terminal 27B. As shown in FIG. 3, the solar cell connection terminal 27A has a terminal PI.
It is connected to A and PIB. The output terminal 27B is connected to the DC main line 51. Solar battery charging unit 27
Adjusts the voltage of the electric power applied to the solar cell connection terminal 27A to supply the charging power to the storage battery unit 31.

The power sale charging unit 29 includes a power sale connection terminal 2
9A, an output terminal 29B, and a control terminal 29C. The power selling connection terminal 29A is used for the input / output switching unit 35.
Are connected to terminals POA, POB, and POT via. The output terminal 29B is connected to the DC main line 51. The control terminal 29C is connected to the communication interface 37. The power selling charging unit 29 has a control terminal 29C.
The charge amount is controlled according to the signal applied to the.

The storage battery unit 31 includes a terminal 31A, a switch unit 53, and a storage battery 31B. The switch unit 53 includes a contact 53A and an operation unit 53B. The terminal 31A is connected to the DC main line 51 and the storage battery 31B via the switch unit 53.

The inverter unit 33 has an input terminal 33.
A, an output terminal 33B, and a control terminal 33C are provided. The input terminal 33A is connected to the DC main line 51. The output terminal 33B is connected to the input / output switching unit 35. The control terminal 33C is the communication interface 3
Connected to 7. The inverter unit 33 converts direct current applied to the input terminal 33A into alternating current power and outputs the alternating current power to the output terminal 33B. The signal applied to the control terminal 33C controls the converted electric energy.

The input / output changeover unit 35 includes a changeover switch 35A, an operating section 35B, and terminals 35C, 35D, 35.
E and. The operation unit 35B is connected to the communication interface 37. The terminal 35C is a terminal POA,
It is connected to POB and POT. The terminal 35D is connected to the power sale connection terminal 29A, and the terminal 35E is the output terminal 3
3B is connected. The changeover switch 35A has a terminal 3
5C and the terminal 35E or between the terminal 35C and the terminal 35D are selectively connected. The operation unit 35B switches the changeover switch 35A.

The voltage sensor 39 is connected between the terminals 31A to detect the terminal voltage of the storage battery 31B, and the current sensor 41
Detects the current input to and output from the storage battery 31B. The current sensor 43 detects the charging current of the power sale charging unit 29, the current sensor 45 detects the charging current of the solar battery charging unit 27, and the current sensor 47 detects the supply current to the inverter unit 33.

The communication interface 37 has a serial side connected to the terminal PS and a parallel side connected to each part in the power unit 9. Communication interface 3
7 executes data communication with the control device 15.

FIG. 4 shows a block diagram of the air conditioner 11. The air conditioner 11 includes a heat pump unit 61, heat exchanger units 63 and 65, a heat storage tank unit 67, and an electromagnetic opening / closing valve 6.
9, 71, 73, pumps 75, 77, solenoid valve 79
A power board 81, a control device 83, and a refrigerant pipe 85.

The heat pump unit 61 discharges the cooled or heated refrigerant from the output side 61A and sucks the returned refrigerant from the input side 61B. Heat exchanger unit 6
The refrigerants 3 and 65 suck the refrigerant from the input sides 63A and 65A, heat-exchange the refrigerant, and discharge the refrigerant to the output sides 63B and 65B.

The heat storage tank unit 67 draws in the refrigerant from the input side 67A, exchanges heat with the heat storage medium, and discharges it to the output side 67B. The refrigerant pipe 85 includes an output side 61A of the heat pump unit 61, a port 79A of the solenoid valve 79,
While connecting between the input sides 63A and 65A of the heat exchanger units 63 and 65, the input side 61B of the heat pump unit 61, the port 79B of the solenoid valve 79, and the output sides 63B and 65B of the heat exchanger units 63 and 65. Connect between and. Further, the refrigerant pipe 85 is connected to the port 79C of the solenoid valve 79.
Is connected to the input side 67A of the heat storage tank unit 67, and the port 79D of the solenoid valve 79 is connected to the output side 67B of the heat storage tank unit 67. The refrigerant pipe 85 is
It has a bifurcated portion 85A.

The electromagnetic opening / closing valve 69 is interposed between the output side 61A of the heat pump unit 61 and the bifurcated portion 85A. The solenoid on-off valve 73 includes a two-branch portion 85A and a port
It is interposed between 9A and 9A. The solenoid valve 71 is interposed between the two branches and the input sides 63A and 65A.

The pump 75 includes a bifurcated portion 85 and a solenoid valve 71.
It is interposed between and. The pump 77 is interposed between the port 79C of the solenoid valve 79 and the input side 67A.
The power board 81 is connected to the pumps 75 and 77 and supplies electric power to these.

The control device 83 includes heat exchange units 63 and 6
5, solenoid valves 69, 71, 73, and solenoid valve 79. Each part of the air conditioner 11 is operated as shown in Table 1, and the operation in the normal cooling mode, the cold heat storage mode, the heat storage cooling mode, the heat radiation cooling mode, the normal heating mode, the heat storage mode, the heat storage heating mode, and the heat radiation heating mode is performed. Done.

[0039]

[Table 1]

In the normal cooling mode and the normal heating mode, the heat pump unit 61 and the heat exchanger unit 6 are used.
It is operated with 3,65. Cold heat storage mode,
In the heat storage mode, cold heat or heat generated by the heat pump unit 61 is stored in the heat storage tank unit 67.

In the heat storage cooling mode and the heat storage heating mode, cold heat generated by the heat pump unit 61,
Alternatively, heat is transferred to the heat storage tank unit 67 and the heat exchanger unit 6
3, 65.

In the radiation cooling mode and the radiation heating mode, cold heat or heat stored in the heat storage tank unit 67 is supplied to the heat exchanger units 63 and 65. FIG. 5 is a configuration diagram of the water heater 13.

The hot water machine 13 comprises a hot water tank 91, a heater 93, electromagnetic valves 95 and 96, a temperature sensor 97, a water amount sensor 99, a control device 101, a water supply pipe 103, and a water supply pipe 105. ing.

The heater 93 is arranged in the hot water tank 91 and is connected to the control device 101. Solenoid valve 9
5 is attached to the water supply pipe 103, and the control device 1
01 is connected.

The temperature sensor 97 is mounted in the hot water tank 91 and connected to the control device 101. The water amount sensor 99 is mounted in the hot water tank 91 and connected to the control device 101.

The electromagnetic valve 96 is attached to the water supply pipe 105 and is connected to the control device 101. Figure 6
3 is a configuration diagram of a control device 101. FIG.

The control device 101 includes a CPU 111, an input interface 113, and an output interface 115.
, Communication interface 117, and current control circuit 119
And an earth leakage breaker 121.

The CPU 111 uses the input interface 11
3, the output interface 115, and the communication interface 117. The CPU 111 has a one-chip microcomputer configuration including well-known ROM and RAM. The input interface 113 is connected to the temperature sensor 97 and the water amount sensor 99, inputs a temperature signal from the temperature sensor 97, and inputs a water amount signal from the water amount sensor 99. The output interface 115 is
It is connected to the solenoid valves 95 and 96, and outputs a signal instructing the respective opening degrees.

The communication interface 117 is used by the controller 1
Connected to 5. The current control circuit 119 is connected to the lead-in switch unit 5 and the earth leakage breaker 121, and based on the signal from the output interface 115,
The single-phase AC power supplied from the lead-in switch 5 is waveform-controlled and supplied to the earth leakage breaker 121.

The water heater 13 adjusts the opening of the solenoid valves 95 and 96 and controls the water temperature in the hot water tank 91 based on the signal from the controller 15. FIG. 7 is a basic flowchart of the water heater control.

The water heater control is repeatedly executed by the CPU 111 shown in FIG. In the water heater control, first, the water supply pipe control is activated every predetermined time (step 100).
0, hereinafter, the step is simply described as S. ). Next, the water pipe control is activated every predetermined time (S1100). Next, the energization amount control is activated every predetermined time (S120).
0). These are all interrupted by time.

FIG. 8 shows a flow chart of the water supply pipe control process. When the water supply pipe control is activated, first, the input of the instruction water temperature is executed (S1300). The instruction water temperature is instructed by the control device 15. Next, the water temperature is input (S1
310). The temperature sensor 97 inputs the water temperature. As a result, the temperature in the hot water tank 91 is input. Next, it is determined whether the water temperature has reached the instructed water temperature (S1320). If the indicated water temperature has already been reached, this routine is terminated, and if the indicated water temperature has not yet been reached,
Next, input of the indicated water amount (S1330) and input of the water amount (S1
340) is executed. The input of the instruction water amount is performed from the control device 15 via the communication interface 117. The amount of water is input from the water amount sensor 99.

Next, it is judged whether or not the water amount has reached the instructed water amount (S1350), and if it has reached, this routine is once terminated, and if it has not reached, the solenoid valve is "opened" for a predetermined time. Execute (S1360). Here, the solenoid valve 9
5 is controlled to the open side for a predetermined time. The predetermined time is as shown in FIG.
Set several times the lap time of the routine.

After controlling the opening of the solenoid valve 95, the processing is shifted to the beginning of this routine. By this water supply pipe control process, the warm water at the designated water temperature and the designated water amount is supplied to the warm water tank 91.
Can be satisfied.

FIG. 9 is a flowchart of the water pipe control processing routine. First, input of the designated water supply amount (S140
0), input of water volume (S1410), calculation of water supply volume (S1)
420) is sequentially executed. Instructed water flow rate is control device 1
Input from 5. Here, a value obtained by subtracting a desired residual water amount from the full water amount in the warm water tank 91 is set as the instruction water supply amount.
The water amount is a value indicating the remaining water amount, and the value is input from the water amount sensor 99. The amount of water to be sent is calculated based on the amount of water. Here, the amount obtained by subtracting the remaining water amount from the full water amount in the warm water tank 91 is regarded as the water supply amount.

Next, it is determined whether the water supply amount has reached the instructed water supply amount (S1430). If the water supply amount has reached the instructed water supply amount, this routine is once terminated, and if not, the electromagnetic valve is opened for a predetermined time (S1440). That is, if water can be sent, the solenoid valve 96 is controlled to the open side for a predetermined time.

As a result, the amount of water sent from the water heater 13 can be controlled by the controller 15. FIG. 10 is a flowchart of the energization amount control processing routine.

First, input of the instruction energizing amount (S1500),
Input of instruction water temperature (S1510), input of water temperature (S152
0) are sequentially performed. The instruction energization amount is a value indicating a percentage of the energization time of the power source supplied to the heater 93, and is input from the control device 15.

The indicated water temperature is a value indicating the hot water temperature in the hot water tank 91, and is input from the control device 15. The water temperature is input from the temperature sensor 97. Next, it is determined whether the water temperature has reached the instructed water temperature (S1530). If the water temperature has reached the instructed water temperature, this routine is temporarily terminated as it is, and if not reached, a process of energizing at the instructed current amount for a predetermined time is executed (S1540). Here, the current control circuit 119 outputs a signal instructing the instruction energization amount and the energization time.

After energization, the process returns to the beginning of this routine.
By the energization amount control processing routine, the retractable switch unit 5
The current flowing from the heater to the heater 93 can be controlled to a desired state by the control device 15.

FIG. 11 is a block diagram of the controller 15.
The control device 15 includes an input interface 131 and a CPU.
133, a ROM 135, a RAM 137, an output interface 139, a communication interface 141, a keyboard 143, a display 145, an external storage device 147, and a solar radiation prediction device 151. The solar radiation prediction device 151 is connected to the input interface 131, determines the future weather condition from the regional characteristics of the measurement point and the change state of the atmospheric pressure, estimates the solar radiation amount of the next day, and insolates the CPU 133. It is a device that outputs a prediction.

Next, the processing executed by the controller 15 will be described. The power generation amount learning processing routine shown in FIG. 12 is executed by the CPU 133 at predetermined time intervals.

When the power generation amount learning processing routine is started,
First, the input process of the generated current value is executed (S200
0). The input process of the generated current value is performed by inputting the output signal of the current sensor 43 via the communication interface 141.

Next, the amount of generated power is calculated (S2
100). The amount of generated electric power is calculated by multiplying a value obtained by integrating the input generated electric current value by a predetermined constant. Next, it is determined whether it is time to calculate the average power generation amount (S210
5) If it is not the calculation time, this routine is terminated as it is, and if it is the calculation time, the average power generation amount of the previous day is read (S2110). Whether or not it is the time to calculate the average power generation amount is determined by whether or not a predetermined time at night has come. The average power generation amount on the previous day is input from the RAM 137.

After the average power generation amount of the previous day is read, the average power generation amount is calculated by correcting this with the power generation amount of today (S2120). The amount of power generated today will be described later. This is a process of performing a weighted average of the average power generation amount up to the previous day and the power generation amount of today. RA is calculated after calculating the average power generation amount.
It is stored in M137 (S2130), and this routine is once ended.

The power generation amount prediction processing routine shown in FIG.
The average power generation amount of S2130 of 2 is stored and then started. First, the average power generation amount is read (S220
0). The average power generation amount is determined by S2130 in RAM13.
The value stored in 7 is read and used. Then
The solar radiation forecast is read (S2210). The solar radiation prediction is input from the solar radiation prediction device 151.

Next, solar radiation correction of the average power generation amount is performed (S2220), and this solar radiation correction power generation amount is stored in the RAM 137 (S2230). The solar radiation correction of the average power generation amount is for improving the estimation accuracy of the power generation amount of the next day.

FIG. 14 is a flowchart of the consumption amount learning processing routine. The consumption learning processing routine is executed by the CPU
It is activated by 133 every predetermined time. First, the consumption current value is input (S2300). The current consumption value is
This is performed by inputting the instruction value of the current sensor 21 via the input interface 131. After inputting the current consumption value, the power consumption amount for each time is calculated (S231).
0). Next, the hourly average power consumption on the same day of the previous week is read (S2320). The hourly average power consumption is input from the RAM 137.

Next, the hourly average power consumption of the previous week is corrected by the power consumption of today to calculate the average power consumption of each hour of the day (S2330), and the calculated average power consumption is R
Stored in today's day area of AM 137 (S234
0).

According to this consumption amount learning routine,
Moreover, the average power consumption for each hour is created as a table in the RAM 137. FIG. 15 is a flowchart of the control mode determination processing routine. The control mode determination process is activated by the CPU 133 at predetermined time intervals.
First, it is determined whether there is power purchase (S2400). The determination that there is power purchase is made based on whether or not it has been input in advance from the keyboard 143 that there is power purchase. Here, power purchase means that an electric power company purchases electric power.

If it is determined that there is power purchase, then it is determined whether there is a profit (S2410). The determination that there is a profit is made when it is previously input from the keyboard 143 that there is a profit. Here, "profitable" means a case where a profit is obtained when power is received from the electric power company at night and power is transmitted during the daytime. Whether or not a profit can be obtained is determined based on the power rate and the conversion efficiency.

When it is determined that there is a profit, the full charge full power transmission mode is executed (S2420). The details of the full charge full power transmission mode and the details of other modes thereafter will be described later.

On the other hand, if it is determined that there is no profit, then the extra power transmission mode during the daytime is executed (S2425). S2
When it is determined that there is no power purchase in the determination of whether or not there is power purchase in 400, it is next determined whether or not the power generation amount is larger than the usage amount (S2430). If it is determined that the usage amount is equal to or greater than the power generation amount, then the shortage charge mode is executed (S2440).

On the other hand, if it is determined that the power generation amount is larger than the usage amount, then the storage heat storage mode is executed (S245).
0). FIG. 16 is a flowchart of the full charge full power transmission mode control process, and FIG. 17 is an explanatory diagram of the power charge. Figure 1
The processing shown in 6 indicates the processing contents of S2420. First,
Fully charge the night battery (S2500). The night here is the price A1 in FIG. This price A1
Is the cheapest power receiving price.

Charging is performed by operating the power sale charging unit 29, the input / output switching unit 35, and the switch unit 53. The judgment of the full charge state is made by a charge state calculation routine (not shown) based on the output values of the voltage sensor 39 and the current sensor 41.

In addition, full charge and nighttime heat storage are performed (S2510). The heat storage is performed by the air conditioner 11 and the water heater 13. Next, a power transmission schedule is created (S2520). In creating the power transmission schedule, first, the amount of power consumed in the time period when the power receiving price becomes expensive (here, the time period of price A2 in FIG. 17) is calculated based on S2340. Next, the electric power stored in the storage battery unit 31 is applied to the time zone when the power receiving price becomes expensive. At this time, if the amount of power stored in the storage battery unit 31 is larger than the amount of power consumption, the surplus power is transmitted during a time period when the transmission price becomes high (here, a time period of price B3 in FIG. 17). In the schedule. Further, the electric power obtained from the solar cell unit 7 incorporates a schedule for transmitting electric power, except for the amount of electric power consumed. In other words, the electric power obtained by the power generation transmits the rest of the electric power consumed for consumption.

Next, power transmission is performed according to the power transmission schedule (S2530). Power transmission is executed by the power unit 9. By the above full charge full power transmission mode control, power is received at night when the received power cost is the lowest,
This power can be consumed during a time period when the received power charge is expensive, and power can be transmitted to obtain a profit margin. Moreover, it is possible to consume the electric power generated by sunlight and sell the surplus electric power.

FIG. 18 is a flowchart of the daytime extra power transmission mode control. FIG. 18 shows the processing contents of S2425. First, excess power generated is stored and stored as heat (S260
0), and this is continued until the storage heat is full (S
2610). That is, in addition to consumption, electric power generated in excess of the consumption amount is stored in the storage battery unit 31, and the air conditioner 11 and the water heater 13 are operated to store heat.

When the accumulated heat is fully stored, the surplus of the generated power is transmitted (S2620). By the above daytime extra power transmission mode control, the surplus can be sold from the electric power obtained by the power generation.

FIG. 19 is a flow chart of power storage heat storage mode control. This process shows the contents of S2450.
First, all the output of the solar cell is charged (S27
00), power reception is stopped (S2710). That is, the power reception is stopped, the power generated by the solar cell unit 7 is consumed, and the surplus is stored.

Next, it is determined whether or not the storage battery is in the fully charged state (S2720), and if it is in the fully charged state, the excess heat is stored (S2730). On the other hand, if it is determined that the storage battery is not in the fully charged state, then it is determined whether the storage battery is completely discharged (S2740). If it is determined that the storage battery is not completely discharged, the process proceeds to the beginning of this routine, and if the storage battery is completely discharged, the power is received (S27).
50). That is, when the storage battery unit 31 is completely discharged and cannot be used for consumption, the power is received and consumed.

With the above electricity storage heat storage mode, the electric power obtained from the sunlight by the solar cell unit 7 is preferentially consumed, and the increase in the received electric power amount can be avoided as much as possible. FIG. 20 is a flowchart of the shortage charge mode control. This process shows the contents of S2440. First,
The amount of power shortage on the next day is calculated (S2800). The amount of power shortage on the next day is calculated by subtracting the amount of power consumption on the next day calculated based on S2340 from the amount of power generation on the next day calculated based on S2230.

Next, the storage battery is charged at night with electric power corresponding to the power shortage (S2810). Next, the presence / absence of nighttime heat storage is determined (S2820). Whether or not to store heat at night is determined based on an instruction previously input from the keyboard 143 and the amount of power shortage on the next day. For example, if you plan to use air conditioning and heating or hot water supply the next day,
Moreover, when the amount of power shortage is greater than or equal to a predetermined amount, or when the amount of power generation is small, or when it is necessary to perform heating / cooling or hot water supply in the morning, it is determined that nighttime heat storage is required.

If it is determined that the night heat storage is not performed, a discharge schedule for the case where the night heat storage is not performed is created (S2830). First, the discharge schedule is created based on the power generation state of the next day, the stored power amount, and the consumption state. Here, a schedule that minimizes the amount of received power is created in the time zone of price A2 in FIG. 17 in which the power reception charge is high. For example, during the time of price A2, it is assumed that the stored power is consumed while the power generation amount is insufficient, and the generated power is preferentially consumed as the power generation amount increases. Here, when the magnitude of the generated power exceeds the magnitude of the power consumption, the surplus portion is first turned to the power storage, and when the power storage amount is in the fully charged state, heat storage is performed.

On the other hand, when it is determined that the heat is stored at night,
The heat storage by the air conditioner 11 and the heat storage by the water heater 13 are performed during the time period when the power receiving price at night becomes low (S284).
0), and then a discharge heat radiation schedule is created (S285).
0). The heat storage by the air conditioner 11 and the water heater 13 is executed based on the estimated heat consumption of the next day. The estimated heat consumption of the next day is calculated by referring to the consumption schedule of the next day and the learned value of the heat consumption so far.

The discharge heat radiation schedule is created based on the prediction of the power generation amount, power consumption amount, and heat consumption amount of the next day. For example, during the time period of the price A1 where the power reception price is low, the received power is consumed. Price A, which is expensive for receiving electricity
During the time period of 2, the electricity storage, the heat storage, and the generated power are preferentially consumed.

After the discharge heat radiation schedule is created, heat is radiated according to the heat radiation schedule (S2860).
After S2830 or S2860, discharge is performed according to the discharge schedule (S2870).

With the above shortage charge mode, it is possible to store only the amount of electric power and the amount of heat that will be insufficient the next day at night and consume the next day. Moreover, in terms of consumption, the generated power is preferentially consumed, then the stored power is consumed, and the power reception is minimized.

The present embodiment described above makes it possible to make the most effective use of the electric power generated by the solar cell to obtain a profit, and at the same time, to make the maximum use of the time-based charge system and the power purchase system. You can get a marginal profit.

The present invention is not limited to the above embodiments, and various embodiments can be carried out without changing the gist of the present invention. For example, the power generation method is not limited to the solar cell, and any means such as wind power generation may be adopted. Further, any heat storage method may be used.

[0091]

The energy control device of the present invention can control the storage and delivery of energy taken in from the outside according to the energy consumption state. Therefore, all the energy consumed is covered by the energy taken from the outside, or the energy taken from the outside is preferentially consumed as much as possible, and the surplus energy is sent to the energy supply path to obtain a profit. It will be possible.

As a result, there is an extremely excellent effect that the energy taken in from the outside or the energy entered from the energy supply path produces the maximum benefit.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a house energy control system 1.

FIG. 2 is a configuration diagram of a retractable meter unit 3.

FIG. 3 is a configuration diagram of a power unit 9.

FIG. 4 is a configuration diagram of an air conditioner 11.

FIG. 5 is a configuration diagram of a water heater 13.

FIG. 6 is a configuration diagram of a control device 101.

FIG. 7 is a flowchart of a water heater control processing routine.

FIG. 8 is a flowchart of a water supply pipe control processing routine.

FIG. 9 is a flowchart of a water pipe control processing routine.

FIG. 10 is a flowchart of an energization amount control processing routine.

11 is a configuration diagram of a control device 15. FIG.

FIG. 12 is a flowchart of a power generation amount learning processing routine.

FIG. 13 is a flowchart of a power generation amount prediction processing routine.

FIG. 14 is a flowchart of a consumption amount learning processing routine.

FIG. 15 is a flowchart of a control mode determination processing routine.

FIG. 16 is a flowchart of a full charge full power transmission mode control processing routine.

FIG. 17 is an explanatory diagram of charges.

FIG. 18 is a flowchart of a daytime extra power transmission mode control processing routine.

FIG. 19 is a flowchart of a storage heat storage mode processing routine.

FIG. 20 is a flowchart of a shortage charge mode processing routine.

[Explanation of symbols]

1 ... Residential energy control system, 3 ... Retractable meter unit, 3A ... Primary side terminal, 3B ... Secondary side terminal, 3C ...
Voltage sensor, 3D ... Current sensor, 3F ... Electric energy calculation device, 3G ... Display device, 3GA ... Display part, 5 ... Pull-in switch part, 7 ... Solar cell unit, 7A ... Battery panel, 7
B ... Panel support part, 7C ... Current collecting part, 9 ... Power unit, 11 ... Air conditioner, 13 ... Water heater, 15 ... Control device, 1
7 ... Inlet port, 19 ... Induction electromagnetic switch, 21 ... Current sensor, 23A ... Branch switch, 23B ... Branch switch,
23C ... Branch switch, 25 ... Hand switch, 27 ... Solar cell charging unit, 27A ... Solar cell connection terminal, 27B ...
Output terminal, 29 ... Power sale charging unit, 29A ... Power sale connection terminal, 29B ... Output terminal, 29C ... Control terminal, 31 ... Storage battery unit, 31A ... Terminal, 31B ... Storage battery, 33 ...
Inverter unit, 33A ... input terminal, 33B ... output terminal, 33C ... control terminal, 35 ... input / output switching unit,
35A ... Changeover switch, 35B ... Operation part, 35C ... Terminal, 35D ... Terminal, 35E ... Terminal, 37 ... Communication interface, 39 ... Voltage sensor, 41 ... Current sensor, 43 ...
Current sensor, 45 ... Current sensor, 47 ... Current sensor, 4
9 ... Terminal part, 51 ... DC main line, 53 ... Switch unit,
53A ... Contact, 53B ... Operation part, 61 ... Heat pump unit, 61A ... Output side, 61B ... Input side, 63 ... Heat exchanger unit, 63A ... Input side, 63B ... Output side, 67
... Heat storage tank unit, 67A ... Input side, 67B ... Output side,
69 ... solenoid on-off valve, 71 ... solenoid valve, 73 ... solenoid on-off valve,
75 ... Pump, 77 ... Pump, 79 ... Solenoid valve, 79A ...
Port, 79B ... Port, 79C ... Port, 79D ... Port, 81 ... Power board, 83 ... Control device, 85 ... Bifurcating part, 85 ... Refrigerant pipe, 85A ... Bifurcating part, 91 ... Hot water tank, 93 ... Heater, 95 ... Solenoid valve, 96 ... Solenoid valve, 97
... Temperature sensor, 99 ... Water amount sensor, 101 ... Control device,
103 ... Water supply pipe, 105 ... Water supply pipe, 113 ... Input interface, 115 ... Output interface, 117 ... Communication interface, 119 ... Current control circuit, 121 ... Leakage breaker, 131 ... Input interface, 139 ... Output interface, 141 ... Communication interface , 143
... keyboard, 145 ... display, 147 ... external storage device, 151 ... solar radiation prediction device

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI // F24J 2/42 F24J 2/42 J (56) References JP-A-60-256824 (JP, A) JP-A-58- 151829 (JP, A) JP-A-4-121539 (JP, A) JP-A-4-17268 (JP, A) JP-A-62-177031 (JP, A) JP-A-3-264711 (JP, A) 61-151007 (JP, U) Hei 1-160237 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02J 3/00-3/50 H02J 7/35 H02J 15/00 F24J 2/42

Claims (3)

(57) [Claims] 1. A heat pump for cooling or heating a refrigerant by electric energy; a heat storage tank for sucking the cooled or heated refrigerant to exchange heat and discharging the refrigerant; and a cooling or heating tank. A heat exchanger for air conditioning, which inhales the refrigerant and exchanges heat with the refrigerant, and then discharges the refrigerant; a power generation means for generating electric power energy to supply the electric power energy to the electric power consumption means including the heat pump; and an energy supply An energy purchasing unit that purchases energy from a road and supplies electric power energy to a power consuming unit including the heat pump, the nighttime determining unit that determines the nighttime when the purchased energy is the cheapest, and the above-mentioned nighttime purchasing unit Heat storage means for driving the heat pump by energy to heat or cool the refrigerant and to supply the cooled or heated refrigerant to the heat storage tank. And a high price time zone determination means for determining a high price time zone when the purchased energy becomes high price, and a power generation means without consuming the energy purchased by the energy purchase means during the high price time zone. Supplying means for supplying and consuming electric power energy to the electric power consuming means, and electric power energy supplied from the power generating means during the high-priced time period cause the refrigerant to be discharged from the heat storage tank and supplied to the heat exchanger. An energy control device comprising: 2. A heat pump for cooling or heating a refrigerant by electric energy, a heat storage tank for sucking the cooled or heated refrigerant and exchanging heat, and then discharging the refrigerant, cooled or heated. A heat exchanger for air conditioning, which inhales the refrigerant and exchanges heat with the refrigerant, and then discharges the refrigerant; a power generation means for generating electric power energy to supply the electric power energy to the electric power consumption means including the heat pump; and an energy supply The energy purchase means includes means for purchasing energy from a road and supplying electric power energy to the power consumption means including the heat pump, and a power transmission means for transmitting electric power to the energy supply path to purchase the electric power. The nighttime determining means for determining the nighttime with the lowest energy and the energy purchased at the nighttime drives the heat pump to heat the refrigerant, or However, the heat storage means for supplying the cooled or heated refrigerant to the heat storage tank, the high price time zone determination means for determining the high price time zone when the purchased energy becomes high price, and the high price time Generated power supply means for supplying and consuming electric energy from the power generation means to the power consumption means without consuming the energy purchased by the energy purchase means in the belt, and supplied from the power generation means during the high price period With the generated electric power energy, a refrigerant is discharged from the heat storage tank and is supplied to the heat exchanger, and a surplus of the electric power generated by the power generating means, which is not supplied to the power consuming means. An energy control device comprising: a generated power surplus power transmission unit that transmits the amount of electric power to the power transmission unit. By 3. A power energy supplied from said power generating means to the high price time period, according to claim 1, characterized in that the addition operation means for driving the heat pump, or the energy control according to claim 2 apparatus.