JP2008161035A - Constant voltage power circuit, and constant voltage supplying method, and portable constant voltage power supply unit, motor-operated reel, fishing rod supporting fixture, and fishing rod holding unit using constant voltage power circuit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive constant voltage power circuit wherein noise is easily eliminated, conversion efficiency is high, a control range is wide, and also heat generation is insignificant, though its constitution is simple. <P>SOLUTION: The constant voltage power supply circuit 10 is constituted by an oscillating means 4, a step-up/down circuit 2 including a coil means and a capacitive means, a detecting means 6, and a control means 5. The detecting means detects an output current value or an output voltage value S0 of the step-up/down circuit 2, compares the detected value SO with a predetermined reference value, and outputs a point of time when the detected value exceeds the reference value or becomes lower than the reference value, as detected information S1. The control means controls supply of a pulse signal P1 which is output from the oscillating means 4, to the step-up/down circuit 2, based on the detected information S1 of the detecting means 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a constant voltage power supply circuit, and more particularly, relates to an inexpensive constant voltage power supply circuit having a simple circuit configuration, easy control, excellent efficiency, and low heat generation. The present invention relates to a constant voltage power supply device using a constant voltage power supply circuit, fishing equipment, and the like.

  Conventionally, various power supply circuits have been provided as power supplies for electric or electronic devices driven using electric energy, and many proposals have been made regarding attempts to make the power supply circuit constant current or constant voltage. Has been done.

  In many cases of these constant voltage or constant current power supply circuits, for example, a so-called step-up circuit or step-down circuit composed of a coil, a capacitor and switch means is used, and most of them are used. In this circuit, a pulse width modulation (PWM) method is adopted for adjusting the voltage or current.

  For example, NJM2360 and NJM2374 manufactured by New Japan Radio Co., Ltd. are known as booster circuits or step-down circuits composed of general-purpose ICs using PWM circuits. Therefore, although the oscillation frequency is fixed, the pulse width changes in the subsequent stage and the noise frequency changes with voltage control, and a wide range of noise is likely to occur. There was a drawback that it became difficult and costly.

  In other words, in the voltage or current control using the PWM circuit described above, the pulse of the pulse output based on the detection information by detecting the change in the voltage or current output from the booster circuit or the step-down circuit. As the width changes, as a result, the oscillation frequency also changes constantly, so the control becomes complicated, the conversion efficiency also fluctuates and is not constant, and it is impossible to increase the conversion efficiency to the limit at the same time. In addition to being complicated and costly, ripples are frequently generated, noise is frequently generated, and control operations are frequently performed, so heat generation from the step-up / down circuit increases. In addition, the LED light source, which is vulnerable to heat, cannot be driven freely. Conventionally, the output of the LED light source is only 2 W at most. There is at present.

As described above, as a constant voltage power supply circuit for maintaining a voltage or current at a constant level using a step-up switching circuit, for example, Japanese Patent Application Laid-Open No. 2006-148987 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2006-49423. Japanese Patent Publication (Patent Document 2), Japanese Patent Publication No. 7-34650 (Patent Document 3), and the like are known. In any patent publication, it is assumed that a PWM circuit is used. This is a technique that includes all of the problems of the prior art described above, in which the step-up process or the step-down process is performed by combining pulse signals having a frequency fixed in (1).
JP 2006-148987 A JP 2006-49423 A Japanese Patent Publication No. 7-34650

  Accordingly, an object of the present invention is to solve these conventional problems, and it is easy to remove noise while having a simple configuration, has a high conversion efficiency, has a wide control range, and has low heat generation. In addition to providing a constant voltage power supply circuit, a constant voltage power supply device using the constant voltage power supply circuit and various electrical equipment products using the constant voltage power supply circuit are provided.

  In order to achieve the above object, the constant voltage power supply circuit according to the present invention employs a basic technical configuration as shown below.

  That is, a basic aspect of the constant voltage power supply circuit according to the present invention includes an oscillation unit that oscillates a pulse signal having a predetermined frequency, a step-up / step-down circuit including at least a coil unit and a capacitor unit, and the step-up / step-down circuit. The output current value or output voltage value of the circuit is detected, the detected value is compared with a predetermined reference value, and the time when the detected value exceeds the reference value or becomes lower than the reference value is detected information. A constant voltage power supply circuit composed of detection means for outputting, and control means for controlling supply of the pulse signal output from the oscillation means to the step-up / down circuit based on detection information of the detection means, The control means performs a thinning process while fixing the frequency of the pulse signal output from the oscillation means based on the detection information output from the detection means. The pulse signal is a constant voltage power supply circuit, characterized in that is constructed so as to prevent that supplied to the buck-boost circuit.

  Since the constant voltage power supply circuit according to the present invention employs the above-described technical configuration, it is easy to remove noise, has a high conversion efficiency, and has a wide control range. An inexpensive constant voltage power supply circuit with less heat generation can be obtained.

  More specifically, in the constant voltage power supply circuit according to the present invention, the frequency of the switching pulse is fixed to a constant value, and the frequency is set so as to remain constant and not change. Therefore, since the circuit configuration is simple and noise removal is relatively easy, the filter configuration is simplified, the circuit configuration is further simplified, and the energy conversion efficiency is high. In the constant voltage power supply circuit, the conversion efficiency is about 70% at most, but in the present invention, the conversion efficiency exceeding 90% can be achieved and the control range is relatively wide. In the step-up / step-down circuit using the conventional PWM circuit, the control range is narrow and is limited to a control range of about 20 to 30%, but in the present invention, a control range of 200% or more is used. Since the range is possible, Shibiya against control it will be greatly relaxed as compared to the prior art.

  Furthermore, in the present invention, since the circuit configuration is simple and small, the cost can be greatly reduced, the conversion efficiency is high, the noise removal is simple, and the heat generation amount is small. The temperature of the constant voltage power supply circuit as a whole does not increase greatly. Therefore, it is optimal as a constant voltage power supply circuit for driving a light source using an LED that is weak at high temperatures, and the conventional constant voltage power supply circuit generates heat. Since the light source using the LED can drive only about 2 W at most, the light source using the LED is driven at, for example, 14 W by using the constant voltage power supply circuit in the present invention. Things will be possible.

  Or it can be effectively used as a power source for a driving body that needs to be driven with a stable current, such as a small high-performance motor.

  Hereinafter, the configuration of a specific example of the constant voltage power supply circuit 10 according to the present invention will be described in detail with reference to the drawings.

  1 is a block diagram showing the configuration of a specific example of a constant voltage power supply circuit 10 according to the present invention, in which an oscillation means for oscillating a pulse signal P1 having a predetermined specific frequency is shown. 4. The step-up / down circuit 2 including at least the coil means and the capacity means, the output current value or the output voltage value S0 of the step-up / down circuit 2 is detected, and the detected value S0 is compared with a predetermined reference value The detection means 6 that outputs the time when the detection value exceeds the reference value or becomes lower than the reference value as detection information S1, and the pulse output from the oscillation means 4 based on the detection information S1 of the detection means 6 The constant voltage power supply circuit 10 includes a control unit 5 that controls the supply of the signal P1 to the step-up / step-down circuit 2. The control unit 5 includes the detection information S output from the detection unit 6. The pulse signal P1 is supplied to the step-up / step-down circuit 2 by thinning out the pulse signal P1 while the frequency of the pulse signal P1 output from the oscillating means 4 is kept constant. A constant voltage power supply circuit 10 is shown that is configured to block.

  The configuration of the step-up / down circuit 2 used in the present invention is not particularly limited. For example, a conventionally known step-up / down circuit as illustrated in FIG. 2 may be used. Is possible.

  That is, as an example, one end is connected to an appropriate power source 1 and the other end is connected to the collector of the transistor 22, and one end is connected to the other end of the coil 21 and the other end is connected to the other end. A rectifier diode 23 having an end connected to the output end 25 and one end of the capacitor 24, a collector connected to the other end of the coil 21 and one end of the rectifier diode 23, and grounded The step-up / step-down circuit 2 includes a transistor 22 including a base that forms an emitter section and a control end section.

  The step-up / step-down circuit 2 in the present invention can function as a step-up circuit or can function as a step-down circuit depending on the usage form.

  By the way, the oscillation means 4 used in the present invention may have any configuration as long as it has an oscillation circuit that oscillates a rectangular wave pulse, and its specific configuration is specified. Although not intended, in the present invention, a pulse signal having a fixed frequency that is the same as or close to the frequency at which the coil 21 used in the step-up / step-down circuit 2 can exhibit the maximum efficiency is oscillated. It is important that it is set in the same way.

  That is, the basic technical idea of the constant voltage power supply circuit 10 in the present invention is based on the basic technical idea that the conventional constant voltage power supply circuit uses a PWM circuit. In addition, the control circuit is complicated and the control method is also very complicated due to the frequent occurrence of noise because the frequency of the pulse signal used and the duty ratio of each pulse are constantly changing, which increases the cost and the control range. The current condition is that not only the control conditions are narrow and the efficiency is deteriorated, but also the heat generation from each circuit is increased due to frequent operation, and the overall temperature of the constant voltage power supply circuit is increased. It is unsuitable as a constant voltage power supply circuit for driving a light source using an LED that is weak in temperature, and it is impossible to drive the LED light source under optimum conditions for light emission.

  However, in the present invention, only the pulse signal having a fixed frequency for maximizing the efficiency of the coil in the step-up / down circuit 2 is always used to drive the step-up / down circuit 2. As a result, all of the above-mentioned problems of the prior art are solved.

  As described above, the rectangular wave pulse signal output from the oscillation means 4 in the present invention is set to a frequency at which the efficiency of the coil used in the step-up / down circuit can be maximized. However, it is also preferable that the pulse width of the pulse signal, that is, the duty ratio, is also fixed to a value that can maximize the efficiency of the coil or a value in the vicinity thereof. It is desirable that both of them be fixed to a specific value or a value in the vicinity thereof.

  In the present invention, as described above, the frequency or pulse width or duty ratio of the pulse signal capable of maximizing the efficiency of the coil is used in the step-up / down circuit 2 to be used. Appropriate tests are performed on the coil 21 in advance to confirm the frequency and pulse width at which the efficiency of the coil 21 is maximized, and the frequency and / or pulse width that meets the conditions or values in the vicinity thereof. The oscillation means is adjusted so that a pulse signal having a constant value can be constantly oscillated, or an oscillation circuit that can constantly oscillate a pulse signal having the frequency and / or pulse width is selected.

  Specifically, for example, when a commercially available appropriate step-up / step-down circuit is obtained, the output power is taken as a characteristic value as the efficiency of the coil 21 of the step-up / down circuit, and the change in the output power is changed while changing the frequency. Since the power curve as shown in FIG. 6 is obtained by monitoring, the frequency showing the maximum value of the curve can be selected as the frequency at which the efficiency of the coil is maximized.

  A similar test can be performed in advance on the pulse width or duty ratio to obtain an optimum value.

  In the above test, a commercially available step-up / step-down circuit that is scheduled to be used for a flashlight was tested, and a 180 μH one was used as the coil. As a result of the test, the output power value of the coil was maximized. The frequency shown was found to be 54.34 kHz.

  On the other hand, if the frequency at which the coil efficiency is maximized is used as it is, for example, the optimum value of the power may not match, and in this case, the optimum is achieved by changing the duty ratio of the pulse signal. It is desirable to determine the value (about 1.5 to 2 times).

  In the above experiment, the duty ratio of the pulse signal was about 17%.

  As a result, the frequency of the drive pulse signal supplied to the step-up / down circuit was fixed to 54.34 kHz, and the duty ratio was fixed to about 17% for oscillation.

  Of course, as described above, it goes without saying that the frequency may be changed up and down by several percent from the frequency 54.34 kH as long as substantially the same effect can be obtained.

  Next, if the details of the detection means 6 in the present invention are described, the detection means 6 indicates the current or voltage output from the output end 25 of the step-up / down circuit 2, for example, point A in FIG. And the detected current value or voltage value S0 is compared with a predetermined reference voltage value or reference current value Sref, for example, compared with the reference voltage value Sref of the reference power supply 61 in FIG. Then, it is determined whether the detected current value or the detected voltage value S0 detected is higher or lower than the reference value Sref. For example, in the case of functioning as a booster circuit, the detected voltage value is the reference voltage value. When it becomes higher than 61 (Sref), the detection information signal S1 is output.

  As long as the detected voltage value or the detected current value detects a value higher than the reference voltage value or the reference current value, the detection information signal S1 is continuously output.

  When the step-up / step-down circuit 2 is used as a step-down circuit, consideration is given so that the relationship between the reference value and the detected value is reversed.

  Therefore, the configuration of the detection means 6 in the present invention can use, for example, a conventionally known comparator.

  Further, as the control means 5 used in the present invention, basically, the step-up / down circuit for the pulse signal P1 output from the oscillation means 4 based on the detection information signal S1 of the detection means 6 is used. 2 may be of any configuration as long as it has a function of controlling the supply to 2 and specifically, the pulse signal P1 output from the oscillation means 4 based on the detection information signal S1. It is necessary to have a function of operating so as not to be supplied to the step-up / step-down circuit 2.

  More specifically, the control means 5 outputs the pulse signal P1 output from the oscillation means 4 to the step-up / step-down circuit 2 while the detection information signal S1 output from the detection means 6 continues. It is desirable to continue to prevent the supply, and as a result, the pulse signal P1 supplied to the step-up / step-down circuit 2 is thinned out by the control means 5, thereby The charging voltage of the capacitor of the step-up / down circuit 2 can be maintained at a predetermined value.

  As the control means 5 in the present invention, any switch circuit that performs a switching operation in response to the on / off state of the detection information signal S1 can be used.

  Further, in the present invention, a period in which the control unit 5 operates so as not to supply the pulse signal output from the oscillation unit 4 to the step-up / down circuit 2, that is, a period in which decimation is performed, The frequency of the pulse signal P1 output from the oscillation means 4 and the duty ratio of each pulse are fixed, although it is not constant because it constantly changes depending on the relationship between the detected voltage or current value and the reference value. Since the pulse frequency is not changed and the duty ratio is constant, the control is easy, the generation of ripple is small, the efficiency is maximum, and the adjustment range is wide.

  Next, a control method in the above-described constant voltage power supply circuit 10 of the present invention will be described with reference to FIG.

  That is, in FIG. 3, a reference voltage value Sref as shown in the graph (a) is inputted to one input terminal of an appropriate comparator constituting the detecting means 6, and the rising and lowering is inputted to the other input terminal. An output voltage value S0 as shown in the graph (b) of the voltage circuit 2 is input.

  When the output voltage value S0 of the step-up / step-down circuit 2 increases with time and exceeds the reference voltage value Sref at time t1, a detection information signal output from the detection means 6 as shown in the graph (c). S1 is turned on, and as a result, the output of the switch of the control circuit 5 is turned off as shown in graph (d), whereby the pulse signal P1 output from the oscillation circuit 4 is The pulse signal P1 that cannot pass through the means 5 and is supplied to the step-up / step-down circuit 2 is thinned as shown in the graph (e).

  Then, when the output voltage value S0 of the step-up / step-down circuit 2 gradually decreases and falls below the reference voltage value Sref at time t2, the detection information signal S1 is turned off. This is continued until the switch means 5 is turned on again.

  Thereafter, the above-described operation is repeated according to the relationship between the reference voltage value Sref and the output voltage value S0 of the step-up / down circuit 2.

  By such an operation, the output voltage value or output current value of the step-up / step-down circuit 2 is stably maintained at a predetermined voltage value or current value set in advance.

  In the following, further specific examples of the present invention will be described in more detail with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of a power supply circuit of the present invention. In FIG. 1, 1 is a power supply for supplying power to the power supply circuit of the present invention, for example, a power supply such as a battery, and 2 is a power supply 1. A charging circuit composed of a step-up / step-down circuit for generating a predetermined voltage, which is a voltage higher than the voltage of the power source 1 or a voltage lower than the voltage of the power source 1, 3 is an LED driven by the charging voltage of the step-up / down circuit 2 4 is a rectangular wave oscillation circuit that outputs a rectangular wave pulse for switching the switching transistor in the step-up / step-down circuit 2, and 5 is a pulse signal input from the rectangular wave oscillation circuit 4 to the step-up / down circuit 2. And a control circuit 6 having a switching function for controlling the step-up / down circuit 2 corresponding to the charging circuit not to input the pulse signal by thinning out the pulse signal, and 6 is a charging circuit. The output voltage of the voltage circuit 2 is detected, and when the detected voltage is equal to or higher than the predetermined voltage 61, a thinning process is performed so that the pulse signal output from the rectangular wave oscillation circuit 4 is not input to the switching transistor of the step-up / down circuit 2. It is a control condition detection circuit for detecting a control condition for controlling the control circuit 5 so as to perform the above.

  In the power supply circuit configured as described above, for example, when the output voltage of the step-up / step-down circuit 2 exceeds a predetermined voltage 61, the detection circuit 6 controls the control circuit 5 to be in an OFF state, so that the rectangular wave oscillation circuit 4 The thinning-out process is repeatedly performed so that a pulse signal whose frequency as an output is fixed is not input to the switching transistor of the step-up / down circuit 2 as a charging circuit. Therefore, the output voltage of the step-up / down circuit 2 (the voltage at point A in FIG. 1) decreases. When the output voltage of the step-up / step-down circuit 2 becomes equal to or lower than a predetermined voltage, the control condition detection circuit 6 controls the control circuit 5 to be in an ON state, so that the pulse signal output from the rectangular wave oscillation circuit 4 is raised / lowered. Since the voltage is input again to the switching transistor of the voltage circuit 2 and the boosting operation is resumed, the output voltage of the step-up / down circuit 2 starts to rise again.

  As described above, in the power supply circuit of the present invention, when the output voltage of the step-up / down circuit 2 is equal to or lower than the predetermined voltage 61, the pulse signal of the rectangular wave oscillation circuit 4 is input to the switching transistor of the step-up / down circuit 2. When the output voltage of the step-up / step-down circuit 2 is increased, or when the output voltage of the step-up / down circuit 2 is equal to or higher than the predetermined voltage 61, the pulse signal of the rectangular wave oscillation circuit 4 is thinned out, and the pulse signal is The output voltage of the step-up / step-down circuit 2 can be kept constant at all times by not being input to the switching transistor of the circuit 2.

  Next, the present invention will be specifically described based on the circuit diagram of FIG.

  In FIG. 4, the charging circuit 2 constituting the step-up / step-down circuit includes a switching transistor 21, a coil 22 connected in series to the switching transistor 21, a diode 23 connected to the drain of the switching transistor 21, and a diode 23. And a capacitor 24 that is charged via the capacitor. 4 is a known rectangular wave oscillation circuit. The switch circuit 5 includes a comparator 51, a transistor 52 that switches based on the output of the comparator 51, and transistors 53 and 54 that perform a switching operation based on the output of the transistor 52 and control the switching transistor 21. The switch control circuit 6 includes an open collector comparator 63 that compares the reference voltage 61 with the output voltage of the step-up / down circuit 2, and the output of the comparator 63 is input to the comparator 51 of the switch circuit 5. It is composed.

  In FIG. 4, 64 is a load short-circuit display, and 65 is an output terminal.

  The circuit of FIG. 4 operates as follows.

  That is, when the output voltage of the step-up / step-down circuit 2 is equal to or lower than the reference voltage 61, the output of the comparator 63 is high impedance, so that the pulse signal of the rectangular wave oscillation circuit 4 passes through the resistor 41 and the comparator 51. Is input to the inverting input terminal. Since the reference voltage is input to the non-inverting input terminal of the comparator 51, an inverted pulse signal is output to the output of the comparator 51. This pulse signal is input to the gate of the switching transistor 21 via the transistors 52 to 53, and the step-up / step-down circuit 2 performs a boosting operation.

  Eventually, when the voltage of the capacitor 24 rises due to the boosting operation of the step-up / step-down circuit 2 which is a charging circuit, the operation is as follows.

  When the voltage of the capacitor 24 becomes equal to or higher than the reference voltage 61, the output of the comparator 63 becomes low impedance, and therefore the oscillation output of the rectangular wave rectangular wave oscillation circuit 4 is grounded via the resistor 41. At the same time, the output of the comparator 51 becomes H level. For this reason, the collector of the transistor 52 becomes L level, the transistors 53 and 54 are turned OFF, and the switching transistor 21 stops its operation. For this reason, since the pulse signal whose frequency is fixed is thinned, the boosting operation is stopped and the output voltage of the step-up / step-down circuit 2 is lowered, so that the thinning process is interrupted as described above. The boosting operation is performed again.

  FIG. 5 is a circuit showing another configuration of the present invention. In this circuit, twelve LEDs 31 are lit using an AC 100V power source. In addition, the drive voltage of the circuit which connected 12 LED in series is about 40V.

  The step-up / step-down circuit 2 is configured to charge a capacitor 24 via a diode 23 by a switching transistor 21 and a coil 22 connected in series to the switching transistor 21. The switch circuit 5 is configured in the same manner as in FIG.

  The switch control circuit 6 includes a photocoupler 64, an inverter 65 connected to the photocoupler 64, and a diode 66 having an anode connected to the output terminal of the inverter 65. The cathode of the diode 66 is the input of the inverter 51a. Connected to the terminal, it detects that the charging voltage of the step-up / down circuit 2 has reached a predetermined voltage, and controls the switch circuit 5 according to the detection result.

  In the circuit of FIG. 5 configured as described above, when the charging voltage of the capacitor 24 is equal to or lower than a predetermined voltage, an H level is applied to the input of the inverter 65 via the resistor 67. The output of 65 is at the L level, and therefore the diode 66 is in the OFF state. Therefore, the pulse signal that is the output of the rectangular wave oscillation circuit 4 is input to the gate of the switching transistor 21 of the step-up / step-down circuit 2 via the inverter 51a and the transistors 53 and 54, so that the terminal voltage of the capacitor 24 increases. .

  When the terminal voltage of the capacitor 24 rises to a predetermined voltage or higher, the diode 64a of the photocoupler 64 is turned on, the transistor 64b of the photocoupler 64 is turned on, and the input of the inverter 65 becomes L level. Therefore, the output of the inverter 65 becomes H level. Accordingly, the output of the inverter 51a becomes L level, and both the transistors 53 and 54 are turned off, the operation of the switching transistor 21 is stopped, and the pulse signal is thinned out, so that the terminal voltage of the capacitor 24 is lowered. .

  Therefore, also in the circuit of FIG. 5, the output voltage of the step-up / down circuit 2 is kept constant.

  As described above, the power supply circuit of the present invention is configured so that a rectangular wave signal having a predetermined frequency is always input to the switching transistor, and the pulse signal is thinned out under a predetermined condition, so that the noise frequency is constant. It does not change and therefore noise removal is facilitated.

  Next, another aspect of the present invention will be described. As a second aspect of the present invention, an oscillation means for oscillating a pulse signal having a predetermined specific frequency, at least a coil means and a capacitance means are provided. A step-up / down circuit including the detection means for detecting the output current value or output voltage value of the step-up / down circuit, and a control means for controlling the supply operation of the pulse signal output from the oscillation means to the step-up / down circuit. A constant voltage supply method using a constant voltage power supply circuit, wherein the method uses a frequency and / or a pulse width of a drive pulse signal that allows the coil used in the buck-boost circuit to exhibit the maximum efficiency. And having a frequency and / or pulse width that is the same as or close to a specific frequency and / or specific pulse width for the detected coil. A driving pulse having a step of setting an oscillation condition of the oscillation means so as to oscillate the dynamic pulse signal in a fixed manner and the specified frequency and / or pulse width of the step-up / down circuit oscillated from the oscillation means And a step of continuously detecting a voltage value or a current value output from the step-up / step-down circuit by the detection means, and the detection means detects the detected output current value or output voltage value. Based on the detection information of the detection means, comparing with a predetermined reference value to detect when the detected value exceeds or falls below the reference value and outputs it as detection information The control means includes a step of thinning out the specific pulse signal output from the oscillation means to prevent supply of the pulse signal to the step-up / down circuit, and after the prevention step, When the detection information of the detection means is canceled, the control means is configured to start supplying the specific pulse signal output from the oscillation means to the step-up / down circuit. This is a voltage supply method.

  In the present invention, by executing the above-described method, many effects similar to those described above can be obtained.

  Next, another embodiment of the present invention will be described.

  That is, as described above, the basic technical configuration of the constant voltage power supply circuit according to the present invention can easily and accurately step up or step down the output voltage of a predetermined power source to a predetermined voltage level. Since it has the effect of being able to keep the set boosted voltage or step-down voltage constant while being capable of generating a small amount of heat at the same time, the technical field to which it can be applied is extremely wide.

  Hereinafter, an example of a specific mode using the above-described constant voltage power supply circuit according to the present invention will be described with reference to the drawings.

  That is, FIG. 7 (A) is an application of the above-described constant voltage power supply circuit 10 to an arbitrary battery that is generally used in the past. A constant voltage power supply battery 13 is shown in which the above-described constant voltage power supply circuit 10 is brought into contact with appropriate contact means or holding means.

  The arbitrary battery 11 used in this specific example is not particularly limited, and is generally used in the past, such as a lead battery, a nickel cadmium battery, a nickel metal hydride battery, a lithium ion battery, an alkaline battery, and a manganese battery. Nickel batteries, lithium batteries, zinc batteries and the like can be used.

  As illustrated in FIG. 7B, the conventional battery described above has different characteristics for each battery output voltage, but the common point is that the voltage decreases with time. It is.

  That is, the graph (a) in FIG. 7B shows the voltage characteristics of the lithium battery, and the graph (b) in FIG. 7B shows the voltage characteristics of the lead battery.

  In other words, in the past, although any kind of battery is used, there are some differences depending on the characteristics of each battery, but it is inevitable that the output voltage will decrease over time. Therefore, when a specific electric device is operated using only a battery as a power source, the output voltage drops below a predetermined voltage level after a certain period of time, and the electric device performs a predetermined function. Since it was not possible to use it, it was necessary to replace the battery or use a different power source, and the user often felt inconvenience.

  On the other hand, by using the constant voltage power supply circuit 10 according to the present invention in combination with the conventional arbitrary battery 11 as shown in the graph (c) of FIG. It is possible to keep a predetermined voltage level set in advance constant.

  In this specific example, the constant voltage power supply circuit 10 can be downsized to a desired size, so that appropriate attachment means and adhesion are attached to a part of the exterior portion of the main body of the battery 11 described above. It can be attached with agent means, etc., and the output terminals 31 and 32 of the conventional battery and the input terminal of the constant voltage power supply circuit 10 according to the present invention are electrically connected to each other using any connection method, A predetermined constant voltage can be easily taken out from the output terminals 33 and 34 of the constant voltage power supply circuit 10.

  Of course, in the present invention, the arbitrary battery 11 and the constant voltage power supply circuit 10 may be simply connected to each other by appropriate wiring without being integrated. Needless to say.

  Next, still another specific example in the present invention will be described.

  That is, in FIG. 8A, the main body 14, the constant voltage power supply circuit 10 according to the present invention fixedly placed inside or outside the main body 14, and the main body 14 are provided. And a battery insertion portion 15 configured so that an arbitrary battery 11 electrically connected to the constant voltage power supply circuit 10 can be inserted, output terminal portions 31 and 32 of the inserted battery 11, and The wiring portion 35 that electrically connects the input terminal portion of the constant voltage power supply circuit 10 and the output terminal portions 33 and 34 that are electrically connected to the constant voltage power supply circuit 10 provided in the main body portion 14. And the portable constant voltage power supply device 37 comprised from the control panel 36 which controls the output state of the said constant voltage power supply circuit 10 and / or displays the state is shown.

  In the specific example of the present invention shown in FIG. 8A, the conventional battery 11 is detachably placed in an appropriate region 15 provided inside the main body 14 and can be inserted and removed. I can do it.

  As an example, as shown in FIG. 8 (A), the main body portion 14 is configured as a half-divided container portion, and both of them can be opened and closed via appropriate engaging means. Alternatively, it may be configured such that both of them can be opened and closed in a semicircular shape via an appropriate pivot structure.

  When using the battery 11 that has been conventionally commercially available, the main body 14 is opened, the battery 11 is inserted into a predetermined location 15, the main body 14 is closed, This is used as the constant voltage power supply device 37.

  In this specific example, output terminal portions 33 and 34 as the constant voltage power supply device 37 are provided in a part of the main body portion 14 and, if necessary, the output voltage of the battery 11 is used as it is. The control means that can select whether to operate the constant voltage power supply circuit 10 to use as the constant voltage power supply device 37, or the state in which the constant voltage power supply circuit 10 is in operation, or the constant voltage power supply circuit 10 It is also possible to provide a control panel 36 including display means or the like that can display whether it is not in operation.

  Further, as shown in FIG. 8B, an appropriate opening 38 is provided in a predetermined portion of the main body 14, and the insertion section of the battery 11 in which the opening 38 is provided in the main body 14. 39 is configured so that a predetermined battery 11 is inserted into the insertion section 39 from the opening 38 and connected to the input terminal of the constant voltage power supply circuit 10 as necessary. It may be.

  In the specific example of the present invention described above, a portable constant voltage power supply device can be easily obtained, and it can be used in a wide range of applications as a stable power supply device in mountains, seas, etc. where a fixed power supply terminal cannot be used.

  Next, as another specific example of the present invention, there is an electric reel 40 using the constant voltage power supply circuit 10 of the present invention.

  2. Description of the Related Art Conventionally, as a fishing electric reel 40, a fishing reel that uses a power source of a battery 11 to wind a fishing line is generally used.

  By the way, as such a conventional electric reel 40, a predetermined power is directly obtained from an appropriate battery 11 or a power supply terminal connected to a power generator provided on a fishing boat, and the motor of the electric reel is driven. However, there is no problem if the power generator provided on the fishing boat can be used. Generally, however, the angler carries the battery 11 individually and personally operates the electric reel at the fishing spot. When the battery 40 is driven by the battery 11, the voltage drop of the battery becomes a serious problem.

  That is, as described above, since the output voltage of the battery 11 decreases with time, the voltage of the battery 11 that has been using the electric reel 40 for a long period of time suddenly decreases and is necessary. In addition to the disadvantage that the electric reel 40 is not driven at the time, there is a problem that a plurality of batteries 11 must be carried at the same time in order to avoid the above problem.

  On the other hand, Japanese Utility Model Laid-Open No. 5-91344 discloses an example in which a connecting cord to which a booster circuit is connected is connected to an input terminal portion of an electric reel to drive the electric reel. However, the booster circuit shows only a very basic booster circuit. In such a booster circuit, it is impossible to exhibit the boosting or stepping-down characteristics defined in the present invention, and at the same time a constant voltage power supply. It is clear that no action can be expected.

  In the electric reel 40 according to the present invention, the constant voltage power supply circuit 10 according to the present invention is miniaturized as much as possible, so that the constant voltage power supply circuit 10 is directly mounted on the main body of the electric reel 40. Things will be possible.

  That is, as shown in FIG. 9, for example, the constant voltage power supply circuit 10 according to the present invention is formed on a part of the outer surface of the main body 44 of the electric reel 40 attached to an arbitrary fishing rod 41 through appropriate means. It may be attached.

  In FIG. 9, reference numeral 43 denotes an appropriate handle.

  In the present invention, the constant voltage power supply circuit 10 may be disposed inside the main body 44 constituting the electric reel 40, and in any case, the constant voltage The input terminal portion of the power supply circuit 10 is preferably connected to the power supply connection cord 42 of the electric reel 40 through appropriate connection means, while the output terminal of the constant voltage power supply circuit 10 is connected to the electric reel. It is directly connected to the input terminal part of 40 motor means.

  In this specific example, no matter what battery the electric reel 40 is connected to, a predetermined boosted voltage or a step-down voltage can be easily obtained, and the output voltage can be kept constant at a predetermined voltage level. Since it functions as a voltage power supply device, as described above, it is possible to completely avoid the problem that the voltage of the battery is lowered at a necessary time and the electric reel cannot be driven.

  Next, as another specific example of the present invention, as shown in FIG. 10, for example, a fishing rod support in which the constant voltage power supply circuit 10 according to the present invention described above is provided in a part of the main body. 50.

  That is, in this specific example, it pivots on the rod receiving part 51 that protrudes forward from the main body part 57 and has the fishing rod guide part 52 provided at the tip part and the holding base part 56 provided on the upper surface of the main body part 57. A fishing rod fixing portion 53 that is attached to the fishing rod, and the fishing rod fixing portion 53 is formed by two fishing rod holders 54 and 55 in which appropriate semicircular groove portions are arranged to face each other, The fishing rod receivers 54 and 55 are configured to be clamped or opened by appropriate screw fixing means, and the fishing rod 41 is inserted therebetween.

  In the present invention, the constant voltage power supply circuit 10 according to the present invention described above is configured by appropriate joining means or engaging means on the inside or part of the outer surface portion of the fishing rod support 50.

  In the present invention, by arranging the output terminal portions 33 and 34 of the constant voltage power supply circuit 10 on the surface of the fishing rod support 50, it is possible to easily make an electrical connection with the electric reel 11. It becomes.

  Further, the input terminal portion of the constant voltage power supply circuit 10 in the present invention may be connected to a predetermined battery or a fixed power source using an appropriate wiring cord 42 or the like.

  Next, as yet another specific example of the present invention, as shown in FIG. 10, the fishing rod support 50 is connected to the upper portion of the main body 62 via appropriate attachment / detachment devices 63 and 64. On the other hand, a fishing rod holding device 60 having a main body portion 62 composed of a jaw portion 65 provided at a lower portion of the main body portion 62, the fishing rod holding device 60 being an appropriate screw provided on the jaw portion 65. In the fishing rod holding device 60 having a configuration that is fixed to an appropriate ship edge portion 70 via the means 61, the constant voltage power supply circuit 10 according to the present invention is attached to a part of the main body 62 of the fishing rod holding device 60. A fishing rod holding device 60 is provided.

  That is, in this specific example, a fishing rod holding device 60 for fixing the fishing rod support 50 to a predetermined fixing member 70, and a constant voltage according to the present invention is applied to a part of the main body 62 of the fishing rod holding device 60. The fishing rod holding device 60 is provided with a power supply circuit 10.

  In this specific example, it is desirable that the constant voltage power supply circuit 10 is provided inside or outside the main body 62 of the fishing rod holding device 60.

  Also in this specific example, by arranging the output terminal portions 33 and 34 of the constant voltage power supply circuit 10 at appropriate portions on the surface of the fishing rod holding device 60, electrical connection with the electric reel 11 is achieved. Can be easily performed.

  Furthermore, the input terminal portion of the constant voltage power circuit 10 according to the present invention is connected to a predetermined battery or a fixed power source using an appropriate wiring cord 42 or the like.

  In the above example, the angler who enjoys fishing does not need to worry about the drop in the output voltage of the power supply, and does not need to carry many batteries, and can enjoy fishing for a long period of time. Become.

It is a block diagram which shows the structure of this invention. It is a block diagram which shows one specific example of the circuit structure of the step-up / step-down circuit in the present invention. It is a graph which shows an example of the constant voltage control method in this invention. It is a circuit diagram which shows the structure of the 1st Example of this invention. It is a circuit diagram which shows the structure of the 2nd Example of this invention. FIG. 4 is a diagram illustrating an example of a method for determining a specific fixed frequency in the present invention. It is a figure which shows the structure of the other specific example of this invention. It is a figure which shows the structure of the other specific example of this invention. It is a figure explaining the structure in another specific example to this invention. It is a figure which shows the structure of another specific example of this invention.

Explanation of symbols

1 Power supply 2 Buck-boost circuit (charging circuit)
3 Load 4 Rectangular wave oscillation circuit 5 Control circuit 6 Control condition detection circuit (detection circuit)
DESCRIPTION OF SYMBOLS 10 Constant voltage power supply circuit 11 Battery 13 Constant voltage power supply 14 Main-body part 15 and 38 Insertion opening parts 31 and 32 Output terminal part 33 and 34 of battery Output terminal part 35 of constant voltage power supply circuit 35 Connection wiring 36 Control panel 37 Constant voltage power supply Device 39 Partition 40 Electric reel 41 Fishing rod 44 Outer surface 50 of electric reel Fishing rod support 60 Fishing rod holding device 70 Ship edge

Claims (16)

An oscillating means for oscillating a pulse signal having a predetermined specific frequency;
A step-up / down circuit including at least a coil means and a capacity means;
The output current value or output voltage value of the step-up / step-down circuit is detected, the detected value is compared with a predetermined reference value, and the time when the detected value exceeds the reference value or becomes lower than the reference value. Detection means for outputting as detection information;
A constant voltage power supply circuit comprising control means for controlling supply of the pulse signal output from the oscillation means to the step-up / down circuit based on detection information of the detection means,
The control unit prevents the pulse signal from being supplied to the step-up / down circuit by thinning out the pulse signal output from the oscillation unit based on the detection information output from the detection unit. A constant voltage power supply circuit characterized by being configured in the same way.   The oscillating means is set so as to oscillate a pulse signal having a frequency that is the same as or close to a frequency at which the coil used in the step-up / step-down circuit can exhibit the maximum efficiency. Item 4. The constant voltage power supply circuit according to Item 1.   The control unit prevents the pulse signal from being supplied to the step-up / down circuit by thinning out the pulse signal output from the oscillation unit while the detection information output by the detection unit continues. The constant voltage power supply circuit according to claim 1, wherein the constant voltage power supply circuit is configured to continue.   4. The control unit according to claim 3, wherein the control unit is configured to change a period during which the thinning process operates so that the pulse signal output from the oscillation unit is not supplied to the step-up / step-down circuit. Constant voltage power supply circuit. A rectangular wave oscillation circuit for outputting a pulse signal having a predetermined specific frequency;
A step-up / down circuit composed of a switching transistor that switches based on the pulse signal, a coil connected in series with the switching transistor, and a capacitor that is charged by a switching operation of the switching transistor;
A control circuit for controlling the pulse signal of the rectangular wave oscillation circuit to be input to the step-up / step-down circuit or not to input the pulse signal to the step-up / down circuit;
The output voltage or output current of the step-up / down circuit is detected, and when the detected voltage or current is greater than or less than a predetermined voltage value or current value, the rectangular wave oscillation circuit outputs A control condition detection circuit that controls the control circuit so that the pulse signal is not input to the switching transistor by thinning out the pulse signal
A constant voltage power supply circuit characterized by comprising: An oscillating means for oscillating a pulse signal having a predetermined specific frequency;
A step-up / down circuit including at least a coil means and a capacity means;
Detecting means for detecting an output current value or an output voltage value of the step-up / down circuit;
A constant voltage supply method using a constant voltage power supply circuit configured by control means for controlling supply operation of the pulse signal output from the oscillation means to the step-up / down circuit, the method comprising:
Detecting the frequency of the drive pulse signal that allows the coil used in the buck-boost circuit to exhibit the maximum efficiency;
Setting the oscillation condition of the oscillation means to oscillate fixedly a drive pulse signal having a frequency that is the same as or close to the detected specific frequency;
Driving the step-up / down circuit with a drive pulse having the specified frequency oscillated from the oscillating means;
A step of continuously detecting a voltage value or a current value output from the step-up / down circuit by the detection means;
The detection means compares the detected output current value or output voltage value with a predetermined reference value to detect when the detected value exceeds the reference value or becomes lower than the reference value. Output as detection information;
Based on the detection information of the detecting means, the control means thins out the specific pulse signal output from the oscillating means, thereby preventing the supply of the pulse signal to the step-up / down circuit,
When the detection information of the detection means is canceled after the thinning process step, the control means starts supplying the specific pulse signal output from the oscillation means to the step-up / down circuit. ,
The constant voltage supply method characterized by comprising.   A constant-voltage power supply device for driving an LED light source using the constant-voltage power supply circuit according to any one of claims 1 to 5.   A constant voltage power supply device for driving a motor using the constant voltage power supply circuit according to any one of claims 1 to 5.   A constant voltage power supply battery, wherein the constant voltage power supply circuit according to any one of claims 1 to 5 is in contact with an arbitrary battery.   A main body part, the constant voltage power supply circuit according to any one of claims 1 to 5 fixedly mounted on the main body part, provided in the main body part, and electrically connected to the constant voltage power supply circuit Controls or displays the battery holding unit configured to freely insert and remove any connected battery, the output terminal unit electrically connected to the constant voltage power supply circuit, and the output state of the output terminal unit A portable constant voltage power supply device characterized by comprising a control panel.   A part of the main body is provided with an opening corresponding to the battery holding part that allows the arbitrary battery to be inserted into the battery holding part or to be taken out from the battery holding part. The portable power supply device according to claim 10.   An electric reel incorporating the constant voltage power supply circuit according to any one of claims 1 to 5.   An electric reel characterized in that the constant voltage power supply circuit according to any one of claims 1 to 5 is brought into contact with an outer surface portion of a main body portion of the electric reel.   A fishing rod support, wherein the constant voltage power supply circuit according to any one of claims 1 to 5 is provided on a part of the fishing rod support.   A fishing rod holding device for fixing a fishing rod support to a predetermined fixing member, wherein the constant voltage power supply circuit according to any one of claims 1 to 5 is provided in a part of a main body portion of the fishing rod holding device. A fishing rod holding device characterized by that.   16. The fishing rod holding device according to claim 15, wherein the constant voltage power supply circuit is provided inside or on the outer surface of the main body of the fishing rod holding device.