JP4634107B2 - Battery floodlight - Google Patents

Description

  The present invention relates to a battery projector that lights a projector using a battery as a power source.

  Conventionally, a floodlight for illumination has been used for illumination at a construction site at night or in a dark room. FIG. 13 is a diagram showing an external appearance of a general battery projector. The battery floodlight 1 includes a power supply unit 2, a support column 3, a light projecting unit 4, and a carriage 5 on which these facilities are mounted. An operation plate 6 is installed in the power supply unit 2.

  The electric power from the power supply unit 2 is sent to the light projecting unit 4 attached to the tip of the column 3 to light the lamp in the light projecting unit 4. The entire apparatus rides on a carriage 5 and can move freely.

  As a power source, a method of using AC power supplied from an electric power company or a method of generating power by driving a generator with an internal combustion engine at an outdoor construction site is taken. When using AC power from a power company, the construction of the projector is simplified, such as eliminating the need for an inverter for AC conversion. However, it is necessary to draw a power cable, which restricts the use of the projector. Is done. On the other hand, in the method of driving a generator with an internal combustion engine, the place of use is limited because noise is generated. Therefore, a projector using a battery has been attracting attention and used.

  FIG. 14 is a diagram showing a basic configuration of the battery projector. The power supply unit 2 of the battery projector 1 includes a battery 10, a booster circuit 11, an inverter 12, a ballast 13, and a lamp 14. The DC power from the battery 10 is boosted to a voltage higher than the voltage used by the lamp 14 by the booster circuit 11, sent to the inverter 12, and converted to AC power. This AC power is supplied to the ballast 13 and sent to the lamp 14 to turn on the lamp 14. Note that a boosting transformer may be used after the inverter 12 instead of the booster circuit 11.

The battery 10 is usually a battery in which a plurality of lead storage batteries are connected in series. When a 100 W lamp is used, the output voltage of the battery 10 is about 12V, 24V, or 48V. It is connected to the inverter 12.
JP-A-11-224506

  Since the battery projector uses a battery as a power source, it has a feature that can be used anywhere. However, it is important to improve the reliability of the apparatus in handling. In order to make the battery floodlight easy to use, it is necessary to prevent sudden lamp extinguishment especially due to deterioration of the battery or a decrease in the remaining amount of charge in the battery. Furthermore, when the remaining charge of the battery is reduced, it is required to extend the lighting time depending on the work situation.

  The battery applied to the battery floodlight is mainly a lead storage battery that is inexpensive and has a large storage capacity. However, lead-acid batteries have individual differences in performance, and the time at which the capacity of each battery 10 is reduced or the electrode plate is damaged differs. When these accidents occur when using a battery projector to illuminate the work site, the output voltage of the battery decreases and the lamp suddenly turns off. If the lamp goes off during the work, the work will be interrupted and the site will be confused. Depending on the work content, the safety aspect also becomes a problem.

  Since the battery is difficult to repair on site, it is necessary to replace it with a new spare battery to restore the lighting. It takes a considerable amount of time to identify and replace the battery in question when the lamp is extinguished. If the lamp lighting is restored in a short time, the work will not be disturbed so much, but if the restoration takes time, it may lead to a significant delay in the construction.

  A similar problem occurs when the remaining charge of the battery is reduced. A battery projector charges and uses a predetermined amount of electric power, but it is difficult to predict an accurate extinguishing time in advance because the illumination conditions of the lamp need to be changed in time according to the work situation. When the remaining amount of power of the battery decreases, the voltage decreases, the lamp suddenly turns off, and the night work is interrupted.

  In addition, construction work on site may be forced to extend construction time due to unexpected problems. Depending on the situation of work, working efficiency may be improved by extending the lighting time slightly. Normally, the battery has a certain amount of charge capacity, but if the construction is further extended, the remaining amount of charge in the battery is reduced, lighting is disabled, and the construction is interrupted.

  In addition, when a problem occurs in the battery, it is desirable that a worker is warned promptly and battery replacement or charging can be implemented systematically. As a method for warning the worker, there are a method of displaying on the operation panel of the battery projector and a method of making a warning sound with a buzzer or the like. The method of displaying on the operation panel causes problems such as unconfirmed display or forgetting the confirmed display due to the busyness of the work. In addition, the method of producing a warning sound may cause trouble to the worker who cannot hear the warning sound, or to a nearby resident.

  The present invention relates to a battery as a power source, an inverter for converting a direct current into an alternating current, a ballast for stably lighting the lamp, a lamp, a charger for precharging the battery, and a voltage of the battery at the time of charging. Measures and memorizes changes over time of current, measures and memorizes changes in battery voltage over time, and changes in inverter output voltage and output current over time, as well as charge controller that controls battery voltage and current A battery floodlight comprising an inverter control unit that controls the output voltage and frequency of the inverter, and a variable resistance volume that changes the output voltage and frequency of the inverter.

  The present invention provides a measuring means for measuring a change in battery voltage with time during discharge, a storage means for storing a change with time in battery voltage, a calculating means for calculating a voltage drop rate from the change with time in battery voltage, and the battery voltage. Also, a judgment means that compares the initial or previous battery voltage drop speed difference with the set value to determine the magnitude, and if the drop speed difference is greater than or equal to the set value, the lamp flickers and warns that the battery capacity is low And a battery floodlight.

  The present invention includes a measuring unit that measures changes over time in battery voltage and charging current during charging, a storage unit that stores battery voltage and charging current, an arithmetic unit that calculates charging capacity from the battery voltage and charging current, and a charging capacity. And a warning unit that flickers the lamp and warns of a decrease in battery capacity when the charge capacity is equal to or lower than the set value. It is a light machine.

  The present invention includes a measuring unit that measures a change in battery voltage over time during charging, a storage unit that stores a change in battery voltage over time, a calculation unit that calculates a voltage increase rate from the change in battery voltage over time, and the battery voltage. A judgment means that compares the rising speed of the battery and the initial or previous battery voltage rising speed, compares the voltage rising speed difference with the set value, and determines the magnitude, and if the rising speed difference is greater than or equal to the set value, A battery floodlight comprising: warning means for causing flickering and warning of a decrease in battery capacity.

  The present invention provides a measuring means for measuring a change in battery voltage with time during discharge, a storage means for storing a change with time in battery voltage, a calculating means for calculating a voltage drop rate from the change with time in battery voltage, and the battery voltage. And a previous battery voltage drop speed to determine a sudden drop in voltage, and a warning means to flicker the lamp and warn of battery electrode breakage. It is a battery floodlight.

  The present invention includes a measuring unit that measures a change in battery voltage over time during charging, a storage unit that stores a change in battery voltage over time, a calculation unit that calculates a voltage increase rate from the change in battery voltage over time, and the battery voltage. A determination means for comparing the rising speed of the battery and the previous voltage rising speed to determine a sudden voltage increase, and a warning means for causing the lamp to flicker to warn of battery electrode breakage. It is a battery floodlight.

  The present invention provides a storage means for measuring a battery voltage and current with time during charging, calculating and storing a charge capacity, a measuring means for measuring a battery voltage and current with time during discharging, a measured battery voltage and Storage means for storing current, calculation means for calculating power consumption from the battery voltage and current, and prediction means for determining the remaining illumination time by obtaining the remaining charge capacity from the difference between the charge capacity and power consumption And a determination means that compares the remaining lighting time with the set value to determine the magnitude, and if the remaining lighting time is less than the set value, the lamp flicker frequency is changed according to the remaining lighting time, A battery floodlight comprising a warning means for warning the illumination time.

  The warning means of the present invention is a battery floodlight characterized by reducing the voltage of the inverter for AC conversion, changing the voltage and frequency of the inverter, flickering the lamp light, and warning.

  A variable resistance volume powered by a battery is attached to the inverter control unit of the present invention, and by continuously changing the resistance value with the volume, different voltage signals are continuously extracted, and the output voltage and frequency of the inverter are continuously It is a battery floodlight characterized by adjusting the light of the lamp.

  Since the battery floodlight uses a battery as a power source, it attracts attention because it can move freely without noise. Furthermore, in order to improve convenience, detection of battery deterioration, detection of remaining power, or extension of illumination time are important issues.

  The deterioration of the battery has a problem that the capacity of the battery is reduced and the electrode plate is damaged. In the present invention, with respect to a decrease in battery capacity, a decrease in battery voltage over time during discharge, a decrease in charge capacity during charge, and a sudden increase in charge voltage are detected. Further, regarding the breakage of the electrode plate, a rapid voltage drop in a short time during discharging and a rapid voltage rise in a short time during charging are detected. Furthermore, the user is warned of the degree of danger that the lamp will go out by these detections. Therefore, measures such as battery replacement can be systematically performed before the lamp goes out, and work confusion and delay due to the lamp going out can be eliminated.

  The battery voltage of the battery projector is usually 24 V or 48 V, and four or eight batteries with a single output of 6 V are connected in series. If the number of installed batteries is further increased and the output voltage of the battery is increased to be higher than the operating voltage of the lamp, the booster circuit can be omitted, and accordingly, power loss due to boosting is eliminated. That is, the efficiency of the battery power supply system can be increased.

  The problem with this system is that the frequency of battery deterioration increases as the number of batteries increases. The lamp does not turn off when one battery deteriorates, but the lamp turns off when the number of deteriorated batteries increases. By applying the battery deterioration detection means according to the present invention, the state of deterioration can be grasped, and measures such as battery replacement can be systematically performed. For this reason, a battery projector that is highly efficient by omitting the booster circuit can be realized as a practical system.

  Further, according to the present invention, it is possible to store the charge capacity and the power consumption over time, predict the remaining amount of power, obtain the remaining lighting time, and issue a warning according to the remaining lighting time. As a result, the lamp is not suddenly turned off, and the battery replacement at an appropriate time or the life extension measure of the lighting can be implemented systematically.

  Depending on the situation of the work, the work efficiency can be increased by slightly extending the lighting time. In order to extend the illumination time, it is necessary to reduce the illuminance of the lamp and reduce the power consumption in accordance with the required illumination time.

  In the present invention, the amount of power that can be used is determined using the remaining amount of power predicted from the charge capacity and the amount of power consumption. Moreover, in order to reduce the illuminance of the lamp, the voltage at the inverter outlet is reduced and the frequency is increased. By adopting the method of changing the frequency of the inverter together with the voltage reduction, the voltage reduction range can be suppressed, and the danger of the lamp being extinguished due to the significant voltage reduction is avoided.

  In addition, regarding the deterioration of the battery and the decrease in the remaining amount of power of the battery, it is necessary to convey the situation to the worker by reliable means. In the present invention, the output voltage of the inverter for AC conversion is reduced, and the output voltage and the frequency of the inverter are changed to flicker the lamp and warn the operator. The flickering of the lamp can be made to be surely recognized by the operator by continuously performing the flickering after the problematic phenomenon occurs. Further, the warning caused by the flickering of the lamp does not bother the worker or the residents in the vicinity of the work site.

  FIG. 1 is a power circuit diagram of a battery projector according to the present invention. The present invention includes a battery 10 as a power source, an inverter 12 that converts a direct current into alternating current, a ballast 13 that stably lights a lamp 14, a lamp 14, and a charger 15 that precharges the battery 10. . A direct current is sent from the battery 10 to the inverter 12 for alternating current conversion and converted into alternating current. The alternating current is sent to the lamp 14 through the ballast 13 and the lamp 14 is turned on.

  Further, there are a charging control unit 20 and an inverter control unit 21 as control devices. The charging control unit 20 measures the voltage of the battery 10 at the time of charging by the charging battery voltage detection circuit 22, measures the current by the charging current detection circuit 24, and sends it to the charging control unit microcomputer 25. In the charging control unit microcomputer 25, the charging current of the battery 10 during charging is controlled by the charging control circuit 23. At the same time, changes in voltage and current during charging are sent to and stored in the memory 31 via the inverter control unit microcomputer 30. .

  The inverter control unit 21 measures the voltage of the battery 10 at the time of discharge by the battery voltage detection circuit 26 at the time of discharge, measures the output current of the inverter by the output current detection circuit 28, and measures the output voltage of the inverter by the output voltage detection circuit 29. Then, it is sent to the inverter control unit microcomputer 30 and stored in the memory 31.

  The inverter control unit microcomputer 30 controls the output voltage and frequency of the inverter through the inverter control circuit 27. Further, the inverter control unit 21 is provided with a variable resistance volume 32 so that the output voltage and frequency of the inverter 12 can be arbitrarily changed.

  In a normal battery projector, the voltage of the battery 10 is boosted by a booster 11 and converted into alternating current by an inverter 12. In the present invention, the booster circuit 11 is omitted. That is, the number of installed batteries 10 can be increased by detecting the deterioration of the battery 10. As a result, the voltage of the battery 10 can be boosted above the voltage used by the lamp 14, and the booster 11 is not required.

  The deterioration of the battery 10 will be specifically described. When the battery 10 is used for a long time, the capacity is reduced and the electrode plate is damaged. Moreover, these phenomena have individual differences in each battery 10. When the battery floodlight 1 is used for night work, the lamp 14 is suddenly turned off when the battery 10 causing the capacity drop or the electrode plate damage increases.

  For this reason, when the number of installed batteries 10 is increased, the frequency of breakage of the electrode plates and reduction of the capacity is increased accordingly. If these phenomena can be grasped when one or two batteries 10 are damaged in the electrode plate or the capacity is reduced, the battery 10 can be replaced in a scheduled manner. The lamp 14 is not turned off, and the work is not hindered.

  FIG. 2 is a diagram illustrating an example of a change with time of voltage when the capacity of the battery decreases in the process of discharging the battery. The change with time of the voltage when the battery 10 is new is indicated by a broken line, and the change with time of the voltage when the capacity reduction progresses by repeating charging and discharging is indicated by the solid line. When the battery 10 is repeatedly charged and discharged, the voltage drop with time at the time of discharging becomes faster than in the initial state. The capacity of the battery 10 can be grasped from the change in the voltage drop speed.

  FIG. 3 is an operation diagram for recognizing a decrease in battery capacity from a voltage change and issuing a warning in the process of discharging the battery. The battery 10 is turned on and operation starts (step S0). In step S1, the lamp is turned on and discharge is started. Step S <b> 2 is a measuring unit that measures a change in the voltage of the battery 10 with the battery voltage detection circuit 26 during discharging.

  Step S3 is a storage means for sending and storing the change with time of the voltage to the memory 31 via the inverter control unit microcomputer 30. Step S4 is a calculation means for calculating the voltage drop speed by the inverter control unit microcomputer 30. In step S5, the initial and previous voltage drop rates are compared.

  Step S6 is a determination unit that determines that the capacity of the battery 10 has decreased when the voltage drop rate difference obtained by comparing the voltage drop rate with the initial or previous voltage drop rate during discharge is equal to or greater than a set value. . Step S7 is a warning means for warning surrounding workers by changing the output voltage and frequency of the inverter based on this determination and causing the lamp 14 to flicker.

  FIG. 4 is an operation diagram for recognizing a decrease in battery capacity from a decrease in charge capacity and issuing a warning in the process of charging the battery. The charger 15 is turned on and starts operating (step S0). In step S1, the battery 10 is supplied with current from the charger 15 and charging is started.

  Step S <b> 2 is a measuring unit that measures the voltage of the battery 10 with the battery voltage detection circuit 22 during charging and performs the current measurement with the charging current detection circuit 24. Step S3 is a storage means for sending and storing the measured battery voltage and charging current over time to the memory 31 via the charge control unit microcomputer 25 and the inverter control unit microcomputer 30.

  Step S4 is calculation means for obtaining the charging capacity from the battery voltage and the charging current. Step S <b> 5 is a determination unit that determines that the capacity of the battery 10 is low when the charge capacity is equal to or less than the set value. Note that the set value is normally set to about 70% of the charge capacity when the battery is healthy. Step S6 is a warning means for warning surrounding workers by changing the output voltage and frequency of the inverter based on this determination and causing the lamp 14 to flicker.

  FIG. 5 is a diagram illustrating an example of a change with time of voltage when the capacity of the battery decreases in the process of charging the battery. The change with time of the voltage when the battery 10 is new is indicated by a broken line, and the change with time of the voltage when the capacity reduction of the battery 10 proceeds by repeating charging and discharging is indicated by the solid line.

  When the battery 10 is repeatedly charged and discharged, the voltage rises faster during charging and the time required to reach a predetermined voltage is shortened. Therefore, the capacity decrease of the battery 10 can be recognized by obtaining the voltage increase rate until the saturation charge.

  FIG. 6 is an operation diagram for recognizing a decrease in battery capacity from a change in battery voltage and issuing a warning in the process of charging the battery. The charger 15 is turned on and starts operating (step S0). In step S1, a current is supplied to the battery 10 from the charger 15, and charging is started. Step S <b> 2 is measurement means for measuring the voltage of the battery 10 by the battery voltage detection circuit 22 during charging.

  Step S3 is a storage means for sending and storing the voltage change with time to the memory 31 via the charge control unit microcomputer 25 and the inverter control unit microcomputer 30. Step S4 is calculation means for calculating the voltage increase rate. In step S5, the voltage increase rate is compared with the initial and previous voltage increase rates.

  Step S6 is a determination unit that determines that the capacity of the battery 10 has decreased when the voltage increase rate difference obtained by comparing the voltage increase rate with the initial and previous voltage increase rates is equal to or greater than a set value. Step S7 is a warning means for warning surrounding workers by changing the output voltage and frequency of the inverter based on this determination and causing the lamp 14 to flicker.

  FIG. 7 is a diagram illustrating an example of a voltage change when the electrode plate is damaged in the process of discharging the battery. A change with time of the voltage when the electrode plate is broken is shown by a solid line, and a change with time of a normal voltage before the electrode plate is broken is shown by a broken line. When the electrode plate is broken, a phenomenon occurs in which the voltage drops in a short time, as shown by part A. This sudden change in voltage is due to the breakage of the electrode plate.

  FIG. 8 is a diagram illustrating an example of a voltage change when the electrode plate is damaged in the process of charging the battery. A change with time of the voltage when the electrode plate is broken is shown by a solid line, and a change with time of a normal voltage before the electrode plate is broken is shown by a broken line. When the electrode plate is broken, a phenomenon occurs in which the voltage rises in a short time, as shown by part A. This sudden change in voltage is due to the breakage of the electrode plate.

  FIG. 9 is an operation diagram for recognizing breakage of the electrode plate of the battery 10 and issuing a warning when the battery 10 is charged and discharged. At the time of discharging, the battery 10 is turned on and the operation starts (step S0). In step S1, the lamp is turned on and discharge is started. At the time of charging, the charger 15 is turned on and starts operating (step S0). In step S1, a current is supplied to the battery 10 from the charger 15, and charging is started.

  Step S2 is measurement means for measuring the voltage of the battery 10 by the battery voltage detection circuit 26 at the time of discharging, and by the battery voltage detection circuit 22 at the time of charging at the time of charging. Step S <b> 3 is storage means for storing these voltage changes with time in the memory 31 via the inverter control unit microcomputer 30. Step S4 is a calculation means for calculating the voltage drop rate during discharging and the voltage rise rate during charging.

  In step S5, the voltage is compared with the previous change with time. Step S6 is a determination unit that determines that the electrode plate is broken when a rapid voltage change occurs in a short time. Step S7 is a warning means for warning surrounding workers by changing the output voltage and frequency of the inverter based on this determination and causing the lamp 14 to flicker. The operator judges the status of the work, replaces the battery 10 whose electrode plate is damaged at an appropriate time, and resumes the work.

Conventionally, in a battery projector, a plurality of batteries 10 are connected in series, and the output voltage of the battery 10 is 24V or 48V. At this time, when a single battery 10 having an output voltage of 6V is applied, four and eight batteries 10 are connected in series and used.
The output voltage of the battery 10 is boosted by a booster circuit 11 attached in front of the subsequent AC conversion inverter 12 and matched with the operating voltage of the lamp 14.

  For example, to turn on the lamp 14 of 100 V, the voltage is boosted to about 150 V by the booster circuit 11. In the present invention, when the number of installed batteries 10 is increased and the output voltage from the battery 10 is increased to 150 V, the booster circuit 11 can be omitted, and furthermore, power loss due to boosting of the booster circuit 11 can be avoided. Out. That is, a highly efficient battery floodlight can be configured.

  When the number of installed batteries 10 is increased, this method is avoided because the capacity drop of the battery 10 or the probability of voltage drop due to breakage of the electrode plate increases. The present invention is a means for solving these problems, and according to the present invention, the number of installed batteries 10 can be increased and the booster circuit 11 can be omitted.

  In the present invention, as a warning means, a method of flickering the lamp 14 is taken, and the operator can be surely notified of the situation. In order to make the lamp 14 flicker, there is a method of changing the voltage. However, when the remaining capacity of the charging capacity decreases, the voltage also decreases. If the voltage is changed in this state, there is a problem that the lamp 14 goes out at low voltage.

  Therefore, the present invention is a method of changing the frequency while changing the voltage to some extent. That is, when the voltage is lowered and the frequency is increased, the lamp 14 becomes darker. Conversely, when the voltage is increased and the frequency is lowered, the lamp 14 becomes brighter, so that the lamp 14 can be flickered.

  For example, when the battery is normally operated at a voltage of 100V, the voltage decreases to about 90V when the capacity of the battery 10 decreases. In order to flicker the lamp 14 only by changing the voltage, the inverter 12 needs to change the output voltage between 90V and 80V. 80V is the limit at which the lamp 14 goes off and sometimes the lamp 14 goes off.

  Therefore, when the voltage is lowered from 90V to 85V and the frequency of the inverter 12 is increased at the same time, the lamp 14 becomes dark. Conversely, when the voltage is returned to 90 V and the frequency is lowered, the lamp 14 becomes brighter. By repeating this operation, voltage reduction can be suppressed, the lamp 14 can be flickered, and an operator can be warned.

  FIG. 10 is an operation diagram for calculating the remaining charge capacity of the battery and issuing a warning corresponding to the remaining illumination time. When the battery 10 is used for a long time, the remaining capacity of the battery 10 is reduced, the necessary power cannot be supplied to the lamp 14, and the lamp 14 is suddenly turned off.

  First, the battery 10 is turned on and the operation starts (step S0). In step S1, the lamp 14 is turned on and discharge is started. Step S <b> 2 is a measuring unit that measures the voltage of the battery 10 using the output voltage detection circuit 29 and measures the current using the output current detection circuit 28. Step S3 is a storage means for sending and storing the measured changes in output voltage and output current to the memory 31 via the inverter control unit microcomputer 30.

  Step S4 is calculation means for obtaining power consumption from the output voltage and current. Step S5 is a prediction unit that obtains the remaining charge capacity of the battery from the charge capacity and power consumption, and predicts the remaining lighting time. Step S6 is a determination unit that determines that the remaining charge capacity of the battery 10 is low when the remaining illumination time is equal to or less than the set value.

  In step S7, the flicker frequency of the lamp 14 corresponding to the remaining illumination time is set. Step S8 is a warning means for changing the output voltage and frequency of the inverter based on this setting and flickering the lamp 14 to give a warning to the surrounding workers of the time when the battery 10 is extinguished.

  For example, when the time until the lamp 14 is extinguished is 1 hour, 30 minutes, or 15 minutes, the lamp 14 flickers by repeating light and dark at intervals of 5 seconds 5 times, and light and dark at intervals of 3 seconds 10 The remaining illumination time can be informed specifically by changing the interval such that the light and darkness at 1 second intervals is repeated 20 times.

  In addition, depending on the work situation, work efficiency can be increased by extending the illumination time. FIG. 11 is an explanatory diagram of a method for extending the illumination time based on the present invention. The present invention relates to means for reducing power consumption and extending illumination time by reducing the illuminance of a battery projector.

  A variable resistance volume 32 is attached to the substrate power source led from the battery 10, and voltage signals are continuously extracted from the variable resistance volume 32 and transmitted to the inverter control unit microcomputer 30 of the inverter control unit 21. In response to the voltage signal, a signal is output from the inverter control unit microcomputer 30 to the inverter 12, and the brightness of the illumination is changed by changing the output voltage and frequency of the inverter 12.

  The variable resistance volume 32 is attached to the operation plate 6 of the power supply unit 2 of the battery projector 1 and is configured to be operated by an operator according to the situation.

  FIG. 12 is a diagram showing an example of the set value of the inverter for each voltage signal in the variable resistance volume 32 based on the present invention. In this example, when the voltage signal is changed from 5V to 2.5V by the variable resistor volume 32, the output voltage of the inverter 12 continuously changes from 100V to 90V, and the illumination of the lamp is suppressed.

  If the output voltage of the inverter 12 is further lowered, there is a risk of the lamp 14 going off, and thereafter the frequency is changed. When the voltage signal is changed from 2.5V to 0V, the frequency of the inverter 12 is continuously changed from 60 Hz to 70 Hz, and the illumination is further suppressed. As a result, power consumption can be reduced and the illumination time can be extended. The voltage signal can be arbitrarily changed by the volume, and the output voltage and frequency of the inverter 12 are also arbitrarily changed correspondingly.

It is a power supply circuit diagram of the battery floodlight according to the present invention. It is a figure which shows one example of the time-dependent change of the voltage when the capacity | capacitance of a battery falls in the process which is discharging the battery. FIG. 6 is an operation diagram for recognizing a decrease in battery capacity from a voltage change and issuing a warning in the process of discharging the battery according to the present invention. FIG. 5 is an operation diagram for recognizing a decrease in battery capacity from a decrease in charge capacity and issuing a warning in the process of charging the battery according to the present invention. It is a figure which shows an example of the time-dependent change of the voltage when the capacity | capacitance of a battery falls in the process which is charging the battery. FIG. 6 is an operation diagram for recognizing a decrease in battery capacity from a change in battery voltage and issuing a warning in the process of charging the battery according to the present invention. It is a figure which shows one example of the voltage change when an electrode plate is damaged in the process which is discharging the battery. It is a figure which shows one example of the voltage change when an electrode plate is damaged in the process in which the battery is charged. FIG. 5 is an operation diagram for recognizing a breakage of an electrode plate of the battery 10 and issuing a warning when the battery 10 is charged and discharged according to the present invention. FIG. 6 is an operation diagram for calculating a remaining charge capacity of a battery according to the present invention and issuing a warning corresponding to the remaining illumination time. It is explanatory drawing of the system which extends the illumination time by this invention. It is a figure which shows one example of the inverter setting value with respect to each voltage signal in the variable resistance volume by this invention. It is a figure which shows the external appearance of a general battery projector. It is a figure which shows the basic composition of the conventional battery projector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery projector 2 Power supply part 3 Support | pillar 4 Light projection part 5 Cargo 6 Operation board 10 Battery 11 Booster circuit 12 Inverter 13 Stabilizer 14 Lamp 15 Charger 20 Charge control part 21 Inverter control part 22 Battery voltage detection circuit 23 at the time of charge Charging control circuit 24 Charging current detection circuit 25 Charging control unit microcomputer 26 Battery voltage detection circuit 27 during discharging 27 Inverter control circuit 28 Output current detection circuit 29 Output voltage detection circuit 30 Inverter control unit microcomputer 31 Memory 32 Variable resistance volume

Claims (6)

A battery connected in series enough to turn on the lamp without boosting as a power source, and
An inverter for converting a direct current voltage from the battery into an alternating current;
A lamp that is lit by an alternating current from the inverter;
A charger for precharging the battery;
A charging control unit having a charging battery voltage detection circuit for detecting a charging voltage when charging the battery;
A battery voltage detection circuit at the time of discharge for detecting the discharge voltage of the battery, and an inverter control unit having storage means for storing the charge voltage and discharge voltage of the battery,
The time-dependent change of the discharge voltage at the time of discharge is measured by the battery voltage detection circuit at the time of discharge, the rate of decrease of the discharge voltage is calculated by the inverter control unit, and the voltage at the time of initial discharge stored in the storage means When the voltage drop rate difference over time is equal to or greater than the set value compared to the rate of drop, it is detected that the battery capacity is decreasing, or the discharge battery voltage detection circuit detects a sudden change in the discharge voltage during discharge. Measure, calculate the rapid drop rate of the discharge voltage in the inverter control unit, and compare it with the time-dependent voltage drop rate during discharge stored in the storage means, the sudden drop rate difference becomes more than the set value A battery floodlight that detects when the battery electrode plate is damaged . A battery connected in series enough to turn on the lamp without boosting as a power source, and
An inverter for converting a direct current voltage from the battery into an alternating current;
A lamp that is lit by an alternating current from the inverter;
A charger for precharging the battery;
A charging control unit having a charging battery voltage detection circuit for detecting a charging voltage when charging the battery;
A battery voltage detection circuit at the time of discharge for detecting the discharge voltage of the battery, and an inverter control unit having storage means for storing the charge voltage and discharge voltage of the battery,
The time-dependent change of the charging voltage at the time of charging is measured by the battery voltage detection circuit at the time of charging, the rising speed of the charging voltage is calculated by the inverter control unit, and the voltage at the time of initial charging stored in the storage means Compared with the rate of increase, when the difference in voltage increase rate over time is equal to or greater than the set value, it is detected that the battery capacity is decreasing, or the charge voltage at the time of charging is suddenly changed by the battery voltage detection circuit during charging. Measure, calculate the rapid increase rate of the charging voltage in the inverter control unit, and compared with the time-dependent voltage increase rate at the time of charging stored in the storage means, the rapid increase rate difference became more than the set value A battery floodlight that detects when the battery electrode plate is broken . Provide a ballast for stably lighting the lamp,
When the inverter voltage is not high, the inverter voltage is lowered to a value at which the lamp does not go off at the same time as the frequency is increased, or when the inverter voltage is lowered to the lamp turn-off limit value, by repeating the state to dim the lamp by increasing only the frequency of the voltage and the previous state of the state to dim the lamp, according to claim, characterized in that to contrast the light of the lamp 1 or claim 2 battery floodlight described. A battery as a power source;
An inverter for converting a direct current voltage from the battery into an alternating current;
A lamp that is lit by an alternating current from the inverter;
A charger for precharging the battery;
Storage means for measuring a change with time of the charging voltage and charging current of the battery and calculating and storing a charging capacity;
An output current detection circuit that measures the output current of the output of the inverter; an output voltage detection circuit that measures the output voltage of the output of the inverter;
An inverter control unit having storage means for storing the output current and voltage,
The change over time of the current and voltage of the inverter at the time of discharging is measured by the output current detection circuit and the output voltage detection circuit and stored in the memory, and the power consumption is calculated by the calculation means.
Calculating the remaining charge capacity of the battery from the charge capacity of the battery stored in the storage means and the calculated power consumption;
The output voltage and frequency of the inverter are changed according to the calculated remaining charge capacity of the battery, the lamp is brightened and darkened according to the remaining capacity of the battery, and the light and dark intervals are changed, thereby remaining light. A battery floodlight that warns of time . Provide a ballast for stably lighting the lamp,
When the inverter output voltage is not high, the inverter output voltage is lowered to a value at which the lamp does not extinguish and at the same time the frequency is increased, or the inverter output voltage is lowered to the lamp extinction limit value , and a state to dim the lamp by increasing only the frequency of the voltage of the inverter, by repeating the previous state of the state to dim the lamp, according to claim 4, characterized in that to contrast the light of the lamp The battery floodlight described in A power battery,
An inverter for converting a direct current voltage from the battery into an alternating current;
A lamp that is lit by an alternating current from the inverter;
A ballast for stably lighting the lamp;
A charger for precharging the battery;
Storage means for measuring the charging voltage and charging current of the battery over time, calculating and storing the charging capacity, an output current detection circuit for measuring the output current of the inverter output, and an output for measuring the output voltage of the inverter A voltage detection circuit and an inverter control unit having storage means for storing the output current and voltage;
Changes in the current and voltage of the inverter during discharge with time are measured by an output current detection circuit and an output voltage detection circuit, stored in a memory, and power consumption is calculated by a calculation means.
Calculating the remaining charge capacity of the battery from the charge capacity of the battery stored in the storage means and the calculated power consumption;
The output voltage and frequency of the inverter are changed in accordance with the calculated remaining charge capacity of the battery, the lamp is brightened and darkened in accordance with the remaining capacity of the battery, and the light and dark intervals are changed, thereby remaining light. Warn time,
When the battery capacity is low, the variable resistance volume is manually operated according to the remaining lighting time , the inverter frequency is increased, the battery power consumption is reduced, and the lighting time is extended. Floodlight.

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