JP2000308270A - Accumulation controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prolong the service life of an accumulation means by controlling the quantity of charge of a charge means into the range of a prescribed quality. SOLUTION: This controller accumulates the thermoelectromotive force generated by a thermoelectric power generating means 16 in a storage battery 22, and also a microcomputer 25 outputs signals of open from an output port OUT so as to turn on an FET and a transistor Tr1, whereby it forms a charge path and charges a storage battery 22 from a dry cell 23. It supplies the power of this storage battery 22 to a load drive circuit 26, and drives the load of a gas rice cooker. When a prescribed time (six hours), in which the charged quantity of the storage battery 22 is deemed to be 80% passes from the start of charge, it outputs a signal Low from the output port OUT for turning off the FET and the transistor Tr1, whereby it breaks the charge path and terminates the charge control, so that the storage battery 22 will not be overcharged, and the service life of the battery is prolonged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a storage battery (secondary battery).
The present invention relates to a power storage control device that drives a device with electric power.

[0002]

2. Description of the Related Art Conventionally, there has been known a combustion apparatus such as a gas cooker that generates electric power by using combustion heat of a burner and operates an electric load. In such a combustion device, the electric load can be driven by the power of the power generating element during the combustion, but a predetermined power (energy) cannot be obtained at the start of ignition. The storage battery is charged so as to supply the electric power required for the ignition operation.

If the equipment is not used for a long period of time, the storage battery is reduced to a charge amount (remaining capacity) required for starting due to self-discharge or dark current. Therefore, a method of supplying power from a primary battery to a load of a device is known. For example, a gas stove disclosed in Japanese Patent Application Laid-Open No. 8-114322 stores power generated by using combustion heat of a burner in a storage battery. And
The electric load is operated by the electric power, and when the charge amount of the storage battery is small, the storage battery is charged together with the backup from the primary battery to the load.

[0004]

However, since such a device does not have means for detecting the amount of charge of the storage battery, the primary battery continues to be discharged, the storage battery is overcharged, and the electrolyte due to liquid leakage is generated. (Dry out) or internal short circuit (short circuit) may occur, leading to destruction of the storage battery and shortening the battery life. Further, if the charge amount of the storage battery is insufficient, the charge efficiency of the storage battery is reduced, so that a charge amount equal to or more than a predetermined amount is required.

[0005] For example, as shown in FIG. 8, a nickel-cadmium storage battery has an initial charge (the charge amount is 2 times the charge capacity C).
At less than 0%) and at the end of charging (100% or more), the charging efficiency (the ratio of the amount of discharge to the amount of charge) is poor. This is because most of the input energy is used to convert the active material (electrochemical reaction material of the electrode of the storage battery) into a form that can be easily charged in the early stage of charging, and the input energy becomes positive in the last stage of charging. This is because it is consumed as energy for the generation of oxygen gas. Therefore, once the charge of the storage battery drops below 20%,
There was a problem that it took a very long time to charge.
For this reason, the charge amount of the nickel-cadmium storage battery is set within a predetermined range (20 to 100%, preferably 20 to 80%).
It was desirable to control it. An object of the present invention is to solve the above-described problems and appropriately extend the life of the power storage unit by appropriately controlling the charge amount of the power storage unit.

[0006]

According to a first aspect of the present invention, there is provided a power storage control device for converting the energy of heat, light, hydraulic power, wind power, or the like generated by using equipment into electric power. Means, a power storage means for storing the generated power, a primary battery for supplying power to the power storage means, and a load control means for driving and controlling an electric load that operates using the power stored by the power storage means as a power supply. A switching unit that opens and closes a charging path from the primary battery to the power storage unit, a connection detection unit that detects that the primary battery is connected, and the primary storage unit that is connected to the primary battery by the connection detection unit. A timer means for starting time measurement from the time when the battery is detected to be connected; and, after a lapse of a predetermined time from the start of the time measurement by the time measurement means, open the switching means and determine whether the primary battery is used. And summarized in that and a charging control means for stopping the charging.

According to a second aspect of the present invention, there is provided a power storage control device according to the first aspect, further comprising means for detecting a charge amount of the power storage means, wherein the charge amount is less than a predetermined amount. The gist of the invention is to close the switching means when it is detected.

According to a third aspect of the present invention, in the power storage control device according to the first or second aspect, when the voltage of the primary battery is lower than a predetermined voltage, the switching means is opened. After the primary battery has been removed by the connection detecting means,
The gist of the invention is to close the switching means and return to a state where charging from the primary battery to the power storage means can be restarted.

According to a fourth aspect of the present invention, there is provided a power storage control device configured to generate electric power by converting energy such as heat, light, hydraulic power, and wind power generated by using an apparatus into electric power, and to store the generated electric power. A power storage unit, a primary battery that supplies power to the power storage unit, and a load control unit that drives and controls an electric load that operates using the power stored by the power storage unit as a power supply. Switching means for opening and closing a charging path from the primary battery to the power storage means; charge amount detection means for detecting a charge amount of the power storage means; and Charge control means for opening the switching means and stopping charging from the primary battery when the charge amount detection means detects that the charge amount has reached And effect.

According to a fifth aspect of the present invention, there is provided the power storage control device according to the fourth aspect, wherein the charge amount detecting means detects that the charge amount of the power storage means is less than a predetermined amount. The gist of the invention is to close the switching means.

According to a sixth aspect of the present invention, there is provided a power storage control device according to the fourth or fifth aspect, further comprising connection detection means for detecting that the primary battery is connected. When the voltage of the primary battery is equal to or lower than a predetermined voltage, the switching means is kept open, and after the connection detecting means detects that the primary battery has been removed, the switching means is closed to close the primary battery. The gist of the present invention is to return the battery to a state in which charging of the power storage means can be restarted.

According to a seventh aspect of the present invention, there is provided a power storage control device according to any one of the first to third and sixth aspects, wherein during charging from the primary battery to the power storage means, When the connection detecting means detects that the primary battery has been removed, a warning means for notifying the fact is provided.

According to an eighth aspect of the present invention, there is provided a power storage control device according to any one of the first to seventh aspects, wherein the primary battery is charged while charging the power storage means from the primary battery. The gist of the present invention is to provide a charging notification unit that obtains power supply from a battery and notifies that charging is being performed from the primary battery.

According to a ninth aspect of the present invention, there is provided a power storage control device according to any one of the first to eighth aspects, wherein the power storage control device is configured to charge the power storage device while the primary battery is charging the power storage means. When the voltage of the means exceeds a predetermined value, it is essential to perform an abnormality process.

A power storage control device according to a tenth aspect of the present invention is the power storage control device according to any one of the first to ninth aspects, wherein the heat storage control device is used for a gas combustion device and generates power by combustion heat of a burner. The gist is to provide a power generation element and perform burner combustion control using stored power.

The power storage control device according to the first aspect of the present invention having the above configuration converts the energy generated by using the device into electric power to generate electric power, charges the generated electric power to the electric storage means, Drives the electrical load. The power storage means is provided with a charging path from the primary battery via the switching means, and when the primary battery is connected with the switching means closed, charging of the power storage means by the power of the primary battery is started and time counting is performed. After the elapse of a predetermined time (for example, a charging time that can be considered to have increased to the same level as the middle charging period) from the start of timing, the switching means is opened, the charging path is cut off, and the primary battery is disconnected. Stop charging from. Therefore, overcharging of the power storage means can be prevented, thermal runaway of the power storage means, internal short circuit, and electrolyte depletion are prevented, and the life of the power storage means is extended.

According to a second aspect of the present invention having the above-described configuration, the charge amount of the power storage means is detected by the charge amount detection means, and the charge amount is determined to be a predetermined amount (for example, the same charge amount as the initial charge amount). When it is detected that the voltage has dropped to less than (1), the switching means is closed and charging of the power storage means by the power of the primary battery is started. As a result, the battery can be charged by the primary battery before the charge efficiency is reduced to the amount of charge that deteriorates. Note that the charge amount detection unit can be regarded as detection by estimating a decrease in the charge amount of the power storage unit based on, for example, the number of times or time of use of the device or the terminal voltage of the power storage unit.

According to a third aspect of the present invention, when the voltage of the primary battery is equal to or lower than a predetermined voltage, the switching means is kept open, and the switching from the primary battery to the power storage means is performed. After the charging is stopped and the connection detecting unit detects that the primary battery has been removed, the switching unit is closed to return to a state where charging from the primary battery to the power storage unit can be restarted. Thereafter, when the user connects a new primary battery, charging of the power storage means from the primary battery is started. In other words, when the voltage of the primary battery drops below the predetermined voltage, the current of the primary battery continues to flow to circuits other than the power storage means, resulting in overdischarge and leakage of the primary battery. Therefore, the switching means is opened to suppress the flow from the primary battery to the circuits other than the power storage means, and when the primary battery is removed, the switching means is closed to enter a standby state for charging from the primary battery. As a result, overdischarge and liquid leakage of the primary battery are prevented.

According to a fourth aspect of the present invention having the above-mentioned configuration, the power storage control device converts energy generated by using the equipment into electric power to generate electric power, charges the generated electric power to the electric storage means, Drives the electrical load. The power storage means is provided with a charging path from the primary battery via the switching means, and starts charging the power storage means with the power of the primary battery in a state where the switching means is closed. The charge amount detection means detects that the power storage means has reached a predetermined charge amount (a charge amount that does not cause overcharging), opens the switching means, cuts off the charge path, and stops charging from the primary battery. Therefore, overcharging of the power storage means can be prevented, thermal runaway of the power storage means, internal short circuit, and electrolyte depletion are prevented, and the life of the power storage means is extended. The detection of the charged amount can be performed by estimating the charged amount based on, for example, a change in the terminal voltage of the power storage means or a change in the temperature.

In the power storage control device according to the fifth aspect of the present invention, when the charge amount detecting means detects that the charge amount of the power storage means has fallen below a predetermined amount, the switching means is closed, Charging of the power storage means is started by the power of the battery. As a result, the battery can be charged by the primary battery before the charge efficiency is reduced to the amount of charge that deteriorates.

According to a sixth aspect of the present invention having the above configuration, when the voltage of the primary battery is equal to or lower than a predetermined voltage, the switching means is maintained in an open state, and the switching from the primary battery to the power storage means is performed. Stop charging to prevent over-discharge and leakage of the primary battery. After the connection detecting means detects that the primary battery has been removed, the switching means is closed to return to a state where charging from the primary battery to the power storage means can be resumed. Thereafter, when the user connects a new primary battery, charging of the power storage means from the primary battery is started.

According to a seventh aspect of the present invention, there is provided a power storage control device, comprising:
When the connection detecting means detects that the primary battery has been removed, the warning means notifies the user of the fact. As a result, the user can be made aware that the primary battery must not be removed during charging, and thereafter, the possibility that the primary battery is removed during charging is reduced, and until the power storage means reaches a predetermined charge amount. Charge the battery.

According to the power storage control device of the present invention having the above-described configuration, power is supplied from the primary battery during charging from the primary battery to the power storage means, and charging is performed while charging from the primary battery is being performed. Notify by the notification means. As a result, the user is notified that the battery is being charged (from the primary battery),
The primary battery and the power storage unit are prevented from being removed during charging from the primary battery, and charging is performed until the power storage unit reaches a predetermined charge amount. In addition, since the power of the charging notification unit is supplied by the primary battery, the power of the power storage unit does not need to be consumed.

According to a ninth aspect of the present invention, when the measured voltage of the power storage means exceeds a predetermined value, the power storage control device notifies the user of the abnormality or stops the charging operation. Then, the possibility that the power storage means is abnormal is notified, and the time for repair is reduced as a guide for repair. Usually, during charging from the primary battery to the power storage means, the voltage of the primary battery is higher than the voltage of the power storage means.For example, when the power storage means is disconnected or the power storage means is not connected, the power storage means Is closer to the voltage of the primary battery, and therefore higher than the maximum voltage of the power storage means in a normal state. By catching such a phenomenon, the possibility of abnormality of the power storage means is notified.

The power storage control device according to the present invention having the above-mentioned structure is used in a gas combustion device, generates power from combustion heat of a burner by a thermoelectric generator, and stores the power generated by the charge control means. To store electricity. The load control means performs burner combustion control using the electric power of the power storage means.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of a power storage control device of the present invention will be described below.

A gas cooker provided with a power storage control device according to one embodiment of the present invention will be described with reference to FIG. The gas cooker is roughly composed of a combustion unit 10 and a controller 20.

The combustion section 10 includes a burner 11 for burning gas to heat the inner pot 18, a gas conduit 12 for supplying gas to the burner 11, a self-holding solenoid valve 13 for opening and closing by an ignition and a fire extinguishing operation, A magnet solenoid valve 14 that is opened by the push operation of a push solenoid by an ignition operation and energizes an adsorption coil 14a by an electromotive force of a thermocouple 17 described later to maintain the adsorption open state, and generates a high voltage for an ignition spark. An igniter 24, an electrode 15 that sparks when a high voltage is applied thereto, and a thermoelectric generator 16 in which a plurality of thermocouples that generate a thermoelectromotive force when heated by a combustion flame are connected in series.
A thermocouple 17 that generates a thermoelectromotive force while the burner 11 is burning to open and hold the magnet electromagnetic valve 14, and a kettle bottom sensor 19 that detects the temperature of the kettle bottom of the inner kettle 18.

The controller 20 charges the thermoelectromotive force generated from the thermoelectric generator 16 and detachably attaches the storage battery 22, supplies power to the storage battery 22 and detachably attaches and removes the dry battery 23, and charges the storage battery 22 from the dry battery 23. A charge control circuit 21 for controlling the battery; a connection detection circuit 28 for detecting that the dry battery 23 is connected; a microcomputer 25 for controlling combustion and charging; a self-holding solenoid valve 13;
4, a load drive circuit 26 for driving the igniter 24, a light emitting diode LED that is turned on during charging of the storage battery 22 from the dry battery 23, a transistor Tr2 that is turned on by the microcomputer 25 to turn on the light emitting diode LED, and a voltage Vp of the dry battery 23. Adjustment resistor R provided for detecting
5, R6, and an adjusting resistor R8 provided for detecting the voltage Vs of the storage battery 22.

The charging control circuit 21 includes an FET to which a voltage is applied between the gate and the source from the dry battery 23 via the limiting resistor R1 and a transistor Tr1 which is turned on by the ON operation of the FET and causes the current from the dry battery 23 to flow to the storage battery 22. And a Schottky diode SD that allows current to flow only from the transistor Tr1 in the direction of the storage battery 22, and adjustment resistors R2 and R3 that adjust charging current to the storage battery 22.
This FET is turned on by an open output from the output port OUT of the microcomputer 25 and turned off by a Low output. Further, the limiting resistor R1 has a large resistance value of several hundred kΩ.

The connection detection circuit 28 includes a transistor Tr3 that is turned on when the dry battery 23 is connected. When the transistor Tr3 is turned off, the storage battery 22 is turned off.
From the power supply VCC1 is applied to the input port IN of the microcomputer 25 via the limiting resistor R4.
3 detects that it is not connected.

As the storage battery 22, two nickel-cadmium storage batteries are used in series. Note that the voltage Vs of the storage battery 22 is equal to Typ. Approximately 2.8 V, the charging capacity C is 600 mAh. In addition, three manganese batteries are used in series as the batteries 23, and the voltage Vp of the batteries 23 is Typ. 5.1V.

Next, the operation of the gas cooker will be described. Power is supplied from the storage battery 22 to the load drive circuit 26 by an input operation of a rice cooker switch of an operation unit (not shown). The microcomputer 25 is constantly supplied with power from the storage battery 22, outputs a control signal to the load drive circuit 26 based on the rice cooking operation, and opens the self-holding solenoid valve 13 and the magnet solenoid valve 14 to generate gas. Burner 11 from conduit 12
The igniter 24 is driven for a predetermined time, and the burner 11 is ignited by the spark of the electrode 15.

While the burner 11 is burning, the thermoelectric generator 16 generates power and charges the storage battery 22, and rice in the inner pot 18 is heated to cook rice. When the water in the inner pot 18 is exhausted and the pot bottom sensor 19 detects a predetermined cooking temperature, the microcomputer 25 determines that the rice cooking is completed,
The self-holding electromagnetic valve 13 is closed to stop burning the burner 11 and also stop charging the storage battery 22 from the thermoelectric generator 16.

During rice cooking, when the load on the gas rice cooker is small, the generated thermoelectromotive force is charged into the storage battery 22 via the adjustment resistor R3 and transmitted to the microcomputer 25 and the load drive circuit 26. Supplied to drive the gas cooker load. In addition, when the load is large, a larger drive current is required, so that the power is also supplied from the storage battery 22 to the load drive circuit 26.

By the way, when the period from the factory shipment to the arrival at the user is long, or the unused period after the start of use is long, the amount of charge of the storage battery 22 decreases due to consumption of the storage battery 22 such as self-discharge. Therefore, the following charge control process is performed. FIG. 2 shows a charge control process executed by the microcomputer 25, which is started by receiving power supply from the storage battery 22.

First, in step 10, the microcomputer 2
5 is turned on to open the output from the output port OUT, thereby turning on the FET.
1 turns on, a charging path from the dry battery 23 to the storage battery 22 is formed, and the process proceeds to step 20.

Next, it is determined whether or not the dry battery 23 is being connected. When the dry battery 23 is set, the transistor Tr3 of the connection detection circuit 28 is turned on by the voltage Vp of the dry battery 23, and it is determined that the dry battery 23 is connected. Conversely, when the dry battery 23 is not connected, the transistor Tr3 is turned off, and it is determined that the dry battery 23 is not connected.

At the time of purchase of a new product, the dry battery 23 is packed in a state where it is detached from the device. Therefore, charging of the storage battery 22 is started when the user attaches the dry battery 23. When it is determined that the dry battery 23 has been connected, the timer is started by a timer (not shown) in the microcomputer 25 (S30). Since the transistor Tr1 is turned on and a charging path is formed, when the dry battery 23 is connected, the electric power is supplied to the transistor Tr1 and the Schottky diode S.
D, the storage battery 22 starts to be charged via the adjustment resistors R2 and R3. While charging is being performed, the microcomputer 25 turns on the transistor Tr2, energizes the light emitting diode LED with the power supply VCC2 from the dry battery 23, and lights the LED, thereby allowing the user to recognize that charging is in progress. In this case, since the power of the light emitting diode LED is supplied by the dry battery 23, the power of the storage battery 22 does not need to be consumed.

Subsequently, a liquid leakage prevention control, a dry battery removal warning control, and a storage battery abnormality control (S40, 50, 6) which will be described later.
0) is sequentially performed, and in step 70, it is determined whether a predetermined time (6 hours) has elapsed from the start of charging, and steps 40 to 60 are repeated until 6 hours have elapsed to continue charging.

If it is determined that six hours have elapsed, the routine proceeds to step 80, in which the output port OUT outputs a Low signal, thereby turning off the FET and the transistor Tr1 to cut off the charging path, and terminating the charging. Go to 90. At this time, the transistor Tr2 is turned off, the light emitting diode LED is turned off, and the end of charging is notified to the user.
In addition, as shown in FIG. 6, the setting of the charging time of 6 hours is performed by starting the charging at 0.1 CmA from the charging amount of 20% and starting at 8%.
It is the time required to reach 0%.

After the charging is completed, in step 90, it is determined by a timer whether or not the unused period has passed three months. Normally, when the rice cooking operation is performed, the battery is charged by the electromotive force generated by the thermoelectric generator 16, so that the charge amount of the storage battery 22 does not decrease. The amount of charge is reduced and the unused period is 3
After a lapse of months, it is estimated that the charge amount drops to about 20% (120 mAh). If it is determined that three months have elapsed, the process proceeds to step 100, where the counting of the timer ends, and the process returns to step 10.

Again, the output is opened from the output port OUT, the FET and the transistor Tr1 are turned on to form a charging path, and it is determined whether or not the dry battery 23 is being connected (S20). Normally, since the dry battery 23 is still connected, charging is started at the time of step 10. If it is determined in step 20 that the dry battery 23 is being connected, the process proceeds to step 30, and the same control processing is performed thereafter.
The charge amount of the storage battery 22 is controlled in the range of 20 to 80%.
By the way, since the charge amount of the storage battery 22 when the device reaches the user cannot be estimated, even if the charge amount is 20% or more, there is a possibility of overcharging for charging for 6 hours, but this is only the first time. No problem occurs in the storage battery 22. As described above, the charging is stopped after the time when the charge amount of the storage battery 22 is estimated to be 80%, so that overcharging is prevented and the storage battery 2 is stopped.
2 does not cause problems such as thermal runaway, internal short circuit, and electrolyte depletion. As a result, the battery life of the storage battery 22 can be extended with a simple configuration using a timer.
Further, since the charging is controlled by timing so that the charged amount of the storage battery 22 becomes 20 to 80%, the charging efficiency is good.

Next, the control for preventing the liquid from leaking from the dry battery 23 during charging will be described with reference to FIG. Since the voltage drop across the transistor Tr1 and the Schottky diode SD is 0.6 V in total, and the voltage Vs of the storage battery 22 is 2.8 V, when the voltage Vp of the dry battery 23 decreases to about 3.4 V of the sum thereof, the charging voltage is reduced. Becomes 2.8 V, and charging becomes impossible. For this reason, the current of the dry battery 23 flows to the FET via the transistor Tr1, and if this continues, the dry battery 23 is over-discharged, which may cause liquid leakage. Therefore, by turning off the FET, the current of the dry battery 23 flows to the FET via the limiting resistor R1 having a large resistance value. This current is between 100 and 20
Since it is as small as 0 μA, there is no fear that the battery 23 leaks.

In the liquid leakage prevention control, the process first proceeds to step 41, where the voltage Vp of the dry battery 23 is detected via the adjustment resistor R5, and a predetermined voltage value (with a margin of 3.4 V) of 3.5 V
It is determined whether or not: If it is determined that the voltage is higher than 3.5 V, the process directly proceeds to step 50 in FIG. 4. If it is determined that the voltage is lower than 3.5 V, it is determined that the storage battery 22 cannot be charged, and the process proceeds to step 42, where the output is performed. A low output is output from the port OUT to turn off the FET and the transistor Tr1 to cut off the charging path, stop the charging operation, turn off the transistor Tr2, turn off the light emitting diode LED, and proceed to Step 43.

In step 43, the connection detection circuit 28 determines whether or not the dry battery 23 has been removed. When the user removes the dry battery 23 (with a small capacity) or when the dry battery 23 is removed, the process proceeds to step 44, where the output is output from the output port OUT to turn on the FET and the transistor Tr1 to form a charging path. Then, when the dry battery 23 is connected, the process waits so that charging can be resumed, and returns to step 20 in FIG. Thus, the voltage Vp of the dry cell 23 is
When the voltage becomes equal to or less than a predetermined voltage value, the charging is stopped. Therefore, overdischarging of the dry battery 23 due to continuous charging can be prevented, and the life of the dry battery 23 can be extended, which is economical. In addition, since liquid leakage due to overdischarge can be prevented, the user is safe and easy to use.

Next, warning control when the dry battery 23 is removed during charging will be described with reference to FIG. In step 51, the connection detection circuit 28 determines whether or not the dry battery 23 is being connected. If the dry battery 23 is connected, the process proceeds to step 53, and the process proceeds to step 60 in FIG. 5 while the light emitting diode LED remains lit. If it is determined that the dry battery 23 has been removed, the process proceeds to step 52, where the transistor T
r2 is turned on and off, the light emitting diode LED is blinked at a low speed, and the process returns to step 51 to continue the connection check. During this process, the user connects the battery 23 and the battery 2
3 is connected, the transistor T
r2 is always turned on, the display of the light emitting diode LED is switched from blinking to lighting (S53), the warning control is terminated, and the routine proceeds to step 60 in FIG. Thus, the light emitting diode L
By blinking the ED at a low speed, the user is notified that the battery 23 must not be removed during charging. As a result, the battery 23 is prevented from being removed during charging,
Charging of the storage battery 22 can be completed.

Next, control when the storage battery 22 is abnormal will be described with reference to FIG. Normally, while the charge control circuit 21 is operating, the voltage Vp of the dry battery 23 is higher than the voltage Vs of the storage battery 22,
When the storage battery 22 is not connected or when the storage battery 22 is disconnected, the voltage Vs (measured value) of the storage battery 22 becomes close to the voltage Vp of the dry battery 23, and thus the maximum voltage (2 .8V). Then, when the voltage Vs of the storage battery 22 exceeds a predetermined value (2.8 V), it is regarded as abnormal and the user or the repair person is notified.

The abnormality control first proceeds to step 61, where the voltage Vs of the storage battery 22 is detected via the adjustment resistor R8.
It is determined whether or not 2.8 V is exceeded. If it is determined that the voltage Vs of the storage battery 22 is 2.8 V or less, step 63
The process proceeds to step 70 in FIG. 2 while the light emitting diode LED remains lit and the output remains open (FET and transistor Tr1 are on). If it is determined that the voltage exceeds 2.8 V, it is regarded as abnormal and abnormal processing is performed (S62).
It returns to step 61. This abnormal processing means turning on / off the transistor Tr2, notifying by flashing the light emitting diode LED at a high speed, outputting a Low output from the output port OUT, turning off the FET and the transistor Tr1, shutting off the charging path, and stopping the charging operation. It is. By notifying the possibility that the storage battery 22 has an abnormality in this way, it becomes a reference at the time of repair and the trouble of repair is reduced.

If it is determined in step 61 that the voltage Vs of the storage battery 22 is 2.8 V or less, step 63
The transistor Tr2 is always turned on, the display of the light emitting diode LED is switched from blinking to lighting, and
Output port O for resuming charging because of Low output
Open output from UT, FET, transistor Tr1
Is turned on to form a charging path to end the abnormal control, and the routine proceeds to step 70 in FIG.

As described above, according to the gas cooker of this embodiment, the charging is stopped after the charging time (6 hours) has elapsed, and the charging is restarted after the unused period (3 months) has elapsed. Since the charge control is performed only by the timer, the product cost is low and the cost is low. In addition, since the charging is stopped after the time when the charge amount of the storage battery 22 is estimated to be 80%,
The overcharge of the storage battery 22 is prevented, thermal runaway, internal short circuit, and depletion of the electrolyte are prevented, and the battery life of the storage battery 22 can be extended, which is economical. Further, since the charging is started after the time when the charge amount of the storage battery 22 is estimated to be 20%, the storage battery 22 can be efficiently charged by the electric power of the thermoelectric generator 16. Also, the voltage V of the dry battery 23
When p becomes equal to or less than a predetermined value (3.5 V), charging is stopped, so that overdischarge of the dry battery 23 due to continuous charging can be prevented,
It is economical because the life of the dry battery 23 can be extended.
In addition, since liquid leakage due to overdischarge can be prevented, the user is safe and easy to use.

Also, during charging, the light emitting diode LED is turned on to notify the user, and when the dry battery 23 is removed during charging, the light emitting diode LED blinks at a low speed to warn the user. Since the storage battery 22 is not removed, the inhibition of charging can be suppressed. In addition, since the power of the light emitting diode LED is supplied by the dry battery 23, the power of the storage battery 22 does not need to be consumed. The storage battery 22
When the voltage Vs exceeds a predetermined value (2.8 V), the light emitting diode LED blinks at a high speed to perform an abnormal process such as stopping the charging operation, thereby notifying the possibility that the storage battery 22 has an abnormality. In addition, the time required for repair can be reduced as a measure of the cause of the failure.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and can be applied to, for example, a power storage control device other than a gas cooker. Of course, the present invention can be implemented in various modes without departing from the scope of the present invention. For example, in step 90, the charge amount of the storage battery 22 is 20%
As another method of determining whether or not the rice cooking time is less than a predetermined number of times (for example, 100 times), a method of determining whether the rice cooking time has been accumulated for a predetermined time (for example, 25 hours, which is 15 minutes) (× 100 times) or more, or a method of directly detecting a physical quantity such as a voltage Vs that fluctuates according to the charge amount of the storage battery 22 and determining whether the physical quantity is less than a predetermined value may be used.

As a condition for terminating the charging in step 70, it may be determined whether or not a full charge has been detected. According to this method, even if the amount of charge at the start of charging of the storage battery 22 is large, Overcharge can be prevented. The method for detecting this full charge is to detect the voltage Vs of the storage battery 22,
As shown in (1), it is detected that the gradient of the voltage Vs change has changed from positive to negative. Alternatively, a change in voltage rise per unit time may be detected, or the storage battery 2
2, a change in the temperature rise of the storage battery 22 per unit time may be captured.

Alternatively, the condition for terminating the charging in step 70 may be a combination of the detection of the full charge and the detection after the lapse of a predetermined time. That is, if full charge is detected before a predetermined time (6 hours) that can be considered to have reached 80% after charging is started from a state where the charge amount is 20%, charging is stopped. . As a result, overcharging can be reliably prevented even when the charge amount of the storage battery 22 at the start of charging is large. In addition, if the charge amount of the storage battery 22 at the start of charging is about the expected charge start amount (20%), the charging amount is 80% because the charging is stopped after the elapse of a predetermined time. Is reduced when the battery approaches the overcharged state, and the life of the storage battery 22 is extended.

In step 41 of the liquid leakage prevention control of the dry battery 23 during charging, the difference (Vp−Vs) between the voltage Vp of the dry battery 23 and the voltage Vs of the storage battery 22 is (a margin of 0.6 V of the loss). When the voltage becomes 0.7 V or less, it may be determined that charging is impossible, and the process may proceed to step 42. The notification during charging, the warning notification when the dry battery 23 is removed during the charging, and the notification of the abnormality of the storage battery 22 are:
The notification may be made based on the cycle of the buzzer sound or the difference in height, a plurality of light emitting diodes may be provided as the abnormality lamp, the charging lamp, or the combination of the buzzer and the lamp may be provided. . Further, as the power storage means, an organic semiconductor capacitor such as a polyacene-based organic semiconductor capacitor may be used, or a storage battery such as a nickel-hydrogen storage battery or a lithium ion storage battery may be used. Further, a relay may be used as the switching element. Further, power generation by sunlight may be used, or when applied to a water heater, power generation by water flow or power generation by wind power of a fan may be used.

[0057]

As described in detail above, claim 1 of the present invention
According to the power storage control device described above, charging of the power storage means by the primary battery is controlled by the charging time, so that the power storage means is not overcharged, thermal runaway, an internal short circuit, and electrolyte depletion are prevented, and The battery life of the means can be extended and is economical. In addition, by adjusting the charging time, appropriate charging can be performed with a simple configuration.

Further, according to the power storage control device of the present invention, when it is detected that the charge amount of the power storage means has dropped below a predetermined amount, charging by the primary battery is started,
Even when the amount of power generation is small, it is possible to automatically replenish the power storage means.

Furthermore, according to the power storage control device of the third aspect of the present invention, when the voltage of the primary battery is lower than the predetermined voltage, the switching means is opened, so that the overdischarge of the primary battery due to the continuation of charging can be prevented. The service life of the power storage means can be extended, which is economical. In addition, since liquid leakage due to overdischarge can be prevented, it is safe for the user and easy to use.
In addition, since charging is stopped by timing, control can be performed up to a desired charge amount.

According to the power storage control device of the fourth aspect of the present invention, the charging of the primary battery is stopped by detecting that the power storage means has reached a predetermined charge amount, so that the power storage means is overcharged. In this way, thermal runaway, internal short circuit, and electrolyte depletion can be reliably prevented, and the battery life of the power storage means can be extended, which is economical.

Further, according to the power storage control device of the fifth aspect of the present invention, when it is detected that the charge amount of the power storage means has dropped below a predetermined amount, charging by the primary battery is started,
Even when the amount of power generation is small, it is possible to automatically replenish the power storage means. Further, since the power storage means detects a predetermined charge amount and stops charging, overcharging can be reliably prevented.

Further, according to the power storage control device of the present invention, when the voltage of the primary battery is lower than the predetermined voltage, the switching means is opened, so that the overdischarge of the primary battery due to the continuation of charging can be prevented. The service life of the power storage means can be extended, which is economical. In addition, since liquid leakage due to overdischarge can be prevented, it is safe for the user and easy to use.
Further, since the power storage means detects a predetermined charge amount and stops charging, overcharging can be reliably prevented.

Furthermore, according to the power storage control device of the present invention, since the warning means for notifying that the primary battery has been removed during charging is provided, the primary battery must not be removed during charging. Can be recognized by the user, and the inhibition of charging from the primary battery can be suppressed.

Further, according to the power storage control device of the present invention, since the charging notifying means for notifying that the battery is being charged is provided, the user is made aware that the battery is being charged, and the primary battery or the like is charged during the charging. It is possible to prevent the power storage means from being removed, and to inhibit the charging from the primary battery. In addition, since the power of the charging notification unit is supplied by the primary battery, the power of the power storage unit does not need to be consumed.

Further, according to the power storage control device of the ninth aspect of the present invention, when the voltage of the power storage means has become equal to or higher than a predetermined value, an abnormality process is performed to notify the possibility that the power storage means may be abnormal. Thus, the time required for repair can be reduced as a guide for repair.

Further, according to the power storage control device of the present invention, the power storage control device is used in a gas combustion device, generates power from combustion heat of a burner by a thermoelectric generator, and stores the generated power by a power storage means. Then, since the burner combustion control is performed using the electric power of the electric storage means, the electric power for the control is supplemented by the gas combustion device itself, and the energy can be used effectively, which is economical.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a gas rice cooker as one embodiment of the present invention.

FIG. 2 is a flowchart illustrating control of a controller.

FIG. 3 is a flowchart illustrating control of a controller.

FIG. 4 is a flowchart illustrating control of a controller.

FIG. 5 is a flowchart illustrating control of a controller.

FIG. 6 is a graph showing a change in a charged amount of a storage battery.

FIG. 7 is a graph showing a voltage of a storage battery during charging.

FIG. 8 is a graph showing the charging efficiency of a storage battery.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Combustion part, 16 ... Thermoelectric generator, 20 ... Controller, 21 ... Charge control circuit, 22 ... Storage battery, 23 ...
Dry cell, 25: microcomputer, 26: load drive circuit, 2
8. Connection detection circuit.

Claims (10)

[Claims] 1. The heat, light, hydraulic power generated by using the equipment,
Power generating means for converting energy such as wind power into electric power, electric power storing means for storing the generated electric power, a primary battery for supplying electric power to the electric power storing means, and electricity operating with the electric power stored by the electric power storing means as a power source A load control means for controlling a dynamic load, a switching means for opening and closing a charging path from the primary battery to the power storage means, and a connection detection for detecting that the primary battery is connected. Means, timing means for starting time counting from the time when the connection detecting means detects that the primary battery has been connected, and after a predetermined time has elapsed from the start of time counting by the time measuring means, the switching means is opened to open the primary battery. And a charge control means for stopping charging from the battery. 2. The power storage control device according to claim 1, further comprising means for detecting a charge amount of the power storage means, wherein the switching means is closed when the charge amount is detected to be less than a predetermined amount. 3. When the voltage of the primary battery is equal to or lower than a predetermined voltage, the switching means is kept open,
3. The method according to claim 1, wherein after detecting that the primary battery has been removed by the connection detecting means, the switching means is closed to return to a state in which charging from the primary battery to the power storage means can be resumed. The power storage control device according to any one of the preceding claims. 4. The heat, light, hydraulic power generated using the equipment,
Power generating means for converting energy such as wind power into electric power, electric power storing means for storing the generated electric power, a primary battery for supplying electric power to the electric power storing means, and electricity operating with the electric power stored by the electric power storing means as a power source A load control means for driving and controlling a dynamic load, a switching means for opening and closing a charging path from the primary battery to the power storage means, and a charge amount detecting means for detecting a charge amount of the power storage means. During charging of the power storage means from the primary battery, when the charge amount detection means detects that the power storage means has reached a predetermined charge amount, the switching means is opened to release the power from the primary battery. A power storage control device comprising: charge control means for stopping charging. 5. The power storage control device according to claim 4, wherein said switching means is closed when said charge amount detection means detects that the charge amount of said power storage means is less than a predetermined amount. 6. A connection detecting means for detecting that the primary battery is connected, wherein when the voltage of the primary battery is lower than a predetermined voltage, the switching means is kept open, and the connection is maintained. 5. The method according to claim 4, wherein after the detection means detects that the primary battery has been removed, the switching means is closed to return to a state in which charging from the primary battery to the power storage means can be resumed.
Or the power storage control device according to 5. 7. When the connection detecting means detects that the primary battery has been removed during charging of the power storage means from the primary battery, a warning means for notifying the fact is provided. The power storage control device according to any one of claims 1 to 3, and 6. 8. Charging notifying means for obtaining power supply from the primary battery and notifying that charging is being performed from the primary battery during charging from the primary battery to the power storage means. The power storage control device according to claim 1. 9. The method according to claim 1, wherein an abnormality process is performed when the voltage of the power storage means exceeds a predetermined value during charging of the power storage means from the primary battery. The power storage control device according to claim 1. 10. A combustion apparatus for a gas combustion device, comprising: a thermoelectric generator for generating electric power by combustion heat of a burner; and controlling combustion of the burner by the stored electric power.
10. The power storage control device according to any one of claims 9 to 9.