CN211405868U - Output-adjustable booster circuit, illuminating lamp and fan - Google Patents
Output-adjustable booster circuit, illuminating lamp and fan Download PDFInfo
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- CN211405868U CN211405868U CN202020145744.3U CN202020145744U CN211405868U CN 211405868 U CN211405868 U CN 211405868U CN 202020145744 U CN202020145744 U CN 202020145744U CN 211405868 U CN211405868 U CN 211405868U
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- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model discloses an output-adjustable booster circuit, a lighting lamp and a fan, which comprises a rechargeable battery, a charging unit and a boosting unit, when the rechargeable battery is not charged, the charging unit is utilized to charge the rechargeable battery, the rechargeable battery supplies power to a load through the boosting unit, wherein, a potentiometer with adjustable resistance, a boosting DC/DC controller and an inductor, a first diode and an NMOS tube are adopted to form the boosting unit, when the rechargeable battery supplies power, the resistance value can be adjusted through the potentiometer to change the reference voltage of the feedback input end of the boosting DC/DC controller, thereby achieving the purpose of adjustable output voltage, the boosting DC/DC controller is combined with the inductor and the NMOS tube to adjust, the duty ratio can be adjusted according to the load size, the adjusting accuracy is higher, the operation time of the rechargeable battery is favorably improved, and the output efficiency is higher, the cost is lower, and the lamp is suitable for illuminating lamps and fans.
Description
Technical Field
The utility model relates to a household electrical appliances technical field, in particular to output adjustable boost circuit and light, fan.
Background
The existing small household appliances such as mobile illuminating lamps and mobile fans are powered by rechargeable batteries, so that the portable household appliance is convenient to carry and use and is more flexible to use. The built-in drive circuit that has of this kind of small household appliances utilizes drive circuit drive LED lamp or motor operation after rechargeable battery has filled the electricity, and this kind of drive circuit who is applicable to rechargeable battery adopts the steady voltage mode to supply power to LED lamp or motor usually, and the drive mode is comparatively single, can't realize that voltage is adjustable, and efficiency is lower.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an output adjustable boost circuit can realize that output voltage is adjustable, is applicable to light and fan and uses, and it is more nimble convenient to use.
According to the utility model discloses an output adjustable boost circuit of first aspect, include:
a rechargeable battery for supplying a driving power;
a charging unit that charges the rechargeable battery; and the number of the first and second groups,
the boost unit comprises a boost DC/DC controller, a potentiometer of an adjustable resistor, an inductor, a first diode and an NMOS (N-channel metal oxide semiconductor) tube, wherein a voltage input end of the potentiometer is connected with the rechargeable battery, a voltage output end of the potentiometer is connected with a feedback input end of the boost DC/DC controller, an output end of the boost DC/DC controller is connected with a grid electrode of the NMOS tube, one end of the inductor is connected with the rechargeable battery, the other end of the inductor is respectively connected with the anode of the first diode and the drain electrode of the NMOS tube, the source electrode of the NMOS tube is grounded, and the cathode of the first diode is connected with a load and is connected with the feedback input end of the boost DC/DC controller through the first resistor.
According to some embodiments of the utility model, the unit of stepping up still includes the PMOS pipe, the source electrode of PMOS pipe with rechargeable battery's positive pole is connected, the grid of PMOS pipe passes through second resistance connection the voltage input end of potentiometre, through third resistance connection between the grid of PMOS pipe and the source electrode, the drain electrode of PMOS pipe with the inductor is connected.
According to some embodiments of the utility model, the charging unit includes first LED lamp, second LED lamp, triode, stabilivolt and the interface that charges, first LED lamp and second LED lamp be different colours LED and connect in parallel in between the positive pole and the earthing terminal of interface that charges, the positive pole of interface that charges is connected respectively rechargeable battery's positive pole with the negative pole of stabilivolt, the positive pole of stabilivolt passes through fourth resistance ground connection, the base of triode pass through fifth resistance with the positive connection of stabilivolt, the collecting electrode of triode with the positive connection of second LED lamp, the projecting pole ground connection of triode.
According to the utility model discloses a some embodiments, charge the interface the positive pole with still be equipped with second diode, third diode, sixth resistance and seventh resistance between rechargeable battery's the positive pole, sixth resistance with seventh resistance is parallelly connected and is connected the second diode with the positive pole of third diode, the second diode with the positive pole of third diode is connected rechargeable battery's positive pole, the negative pole of stabilivolt pass through eighth resistance connect in the second diode with the positive pole of third diode.
According to some embodiments of the present invention, the charging interface is a USB interface.
According to some embodiments of the invention, the boost DC/DC controller is a CE9908 type IC chip.
According to the utility model discloses a light of second aspect, including above-mentioned first aspect the adjustable boost circuit of output.
According to the utility model discloses a fan of third aspect, including the output adjustable boost circuit of above-mentioned first aspect.
The utility model discloses a technical scheme has following advantage or one of beneficial effect at least among the above-mentioned technical scheme:
when the rechargeable battery is not charged, the rechargeable battery is charged by the charging unit, the rechargeable battery supplies power to the load through the boosting unit, wherein the resistance-adjustable potentiometer and the boosting DC/DC controller are adopted and matched with the inductor, the first diode and the NMOS tube form the boosting unit, when the rechargeable battery supplies power, the resistance value can be adjusted by the potentiometer so as to change the reference voltage of the feedback input end of the boosting DC/DC controller, and therefore the purpose of adjusting the output voltage is achieved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of an operation of a boost circuit with adjustable output according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a boost circuit with adjustable output according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, an embodiment provides a boost circuit with adjustable output, including a rechargeable battery K1, a charging unit and a boost unit, where the charging unit charges a rechargeable battery K1, and the boost unit includes a boost DC/DC controller U1, a resistor-adjustable potentiometer V1, an inductor L1, a first diode D1, and an NMOS transistor Q1 (N-type metal-oxide-semiconductor transistor), where the boost DC/DC controller U1 is an integrated IC for adjusting an output voltage of the boost unit, the potentiometer V1 is a resistor with a switch and the potentiometer V1 is used to obtain an output voltage in a certain relationship with an input voltage, as shown in fig. 2, the potentiometer V1 is an element with four ports, and a resistance value between the resistor and any one of the contacts can be changed by adjusting a position of the contact.
Fig. 2 shows a specific circuit connection schematic diagram, the boost DC/DC controller U1 used in the embodiment is a CE9908 type IC chip, the CE9908 type IC chip is a CMOS boost DC/DC controller composed of a reference voltage source, an oscillation circuit, a comparator, a control circuit, and the like, and the CE9908 type IC chip can automatically switch duty factors (50% in light load and 75% in high output current) according to the load size, and can obtain low output ripple and high output efficiency in a wide range. The voltage input end of a potentiometer V1 is connected with a rechargeable battery K1, the voltage output end of a potentiometer V1 is connected with the feedback input end of a boosting DC/DC controller U1, the output end of the boosting DC/DC controller U1 is connected with the grid of an NMOS tube Q1, one end of an inductor L1 is connected with the rechargeable battery K1, the other end of an inductor L1 is connected with the positive electrode of a first diode D1, the drain electrode of the NMOS tube Q1 is connected between an inductor L1 and a first diode D1, the source electrode of an NMOS tube Q1 is grounded, the negative electrode of a first diode D1 is connected with the feedback input end of the boosting DC/DC controller U1 through a first resistor R12, a load is connected with the negative electrode of the first diode D1, the enabling end of the boosting DC/DC controller U1 is connected with a power supply end, the power supply end is connected with an inductor L1, and the enabling end is grounded through a. As shown in fig. 2, a ninth resistor R10 and a tenth resistor R11 are connected between the fixed end of the potentiometer V1 and the contact, and a feedback input terminal of the boost DC/DC controller U1 is connected between the ninth resistor R10 and the tenth resistor R11. Wherein, the rechargeable battery K1 can be lithium polymer electricity, and the load can be an LED lamp for an illuminating lamp or a motor for a fan.
When the rechargeable battery K1 is dead, charging is usedThe electric unit charges a rechargeable battery K1, the rechargeable battery K1 supplies power to a load through the boosting unit, the potentiometer V1 and the boosting DC/DC controller U1 are matched with the inductor L1, the first diode D1 and the NMOS tube Q1 to form the boosting unit, when the rechargeable battery K1 supplies power, the resistance value can be adjusted through the potentiometer V1, when the output resistance of the potentiometer V1 is changed, the output voltage of the potentiometer V1 is also changed, so that the reference voltage of the feedback input end of the boosting DC/DC controller U1 is changed, the purpose of adjusting the output voltage is achieved, and when the grid-source voltage V1 of the NMOS tube Q1 is used, the grid-source voltage V1 of the NMOS tube Q1 is changedGSLess than the turn-on voltage VTWhen the NMOS transistor Q1 is in the cut-off state. Only when VGS≥VTIn the meantime, the channel of the NMOS transistor Q1 is formed, and after the channel is formed, a forward voltage V is applied between the drain and the sourceDSAnd drain current is generated, so that output voltage regulation is realized. Therefore, the boost DC/DC controller U1 is combined with the inductor L1 and the NMOS tube Q1 for adjustment, the duty ratio can be adjusted according to the load size, the adjustment accuracy is higher, the operation time of the rechargeable battery K1 is favorably improved, the output efficiency is higher, the cost is lower, and the boost DC/DC controller U1 is suitable for illuminating lamps and fans. The CE9908 type IC chip adopted by the boost DC/DC controller U1 is an integrated chip in the prior art, and the specific working principle is not described again.
In some embodiments, the voltage boost unit further includes a PMOS transistor Q2, a source of the PMOS transistor Q2 is connected to the positive electrode of the rechargeable battery K1, a gate of the PMOS transistor Q2 is connected to the voltage input terminal of the potentiometer V1 through a second resistor R8, a gate and a source of the PMOS transistor Q2 are connected through a third resistor R9, a drain of the PMOS transistor Q2 is connected to the inductor L1, and the PMOS transistor Q2 is used for direction protection, so that normal operation of the voltage boost unit is guaranteed.
In some embodiments, the charging unit includes a first LED lamp LED1, a second LED lamp LED2, a triode Q3, a voltage regulator tube Z1 and a charging interface J1, wherein the first LED lamp LED1 is a green lamp, the second LED lamp LED2 is a red lamp, an anode of the first LED lamp LED1 is connected to an anode of the charging interface J1 through an eleventh resistor R1, an anode of the second LED lamp LED2 is connected to an anode of the charging interface J1 through a twelfth resistor R2, cathodes of the first LED lamp LED1 and the second LED lamp LED2 are both grounded, that is, the first LED lamp LED1 is connected in parallel. The anode of the voltage regulator tube Z1 is grounded through a fourth resistor R7, the base of the triode Q3 is connected with the anode of the voltage regulator tube Z1 through a fifth resistor R6, the collector of the triode Q3 is connected with the anode of the second LED lamp LED2, and the emitter of the triode Q3 is grounded.
In this embodiment, the adopted charging interface J1 is a USB interface, the anode of the charging interface J1 is connected with a second diode D2, a third diode D3, a sixth resistor R3 and a seventh resistor R4, specifically, the sixth resistor R3 and the seventh resistor R4 are connected in parallel, and then connected to the anodes of a second diode D2 and a third diode D3, the second diode D2 and a third diode D3 are connected in parallel, the cathodes of the second diode D2 and the third diode D3 are both connected with the anode of the rechargeable battery K1, and the cathode of the voltage regulator tube Z1 is connected to the anodes of the second diode D2 and the third diode D3 through an eighth resistor R5.
When the rechargeable battery K1 is not charged, 5V voltage is input through the USB interface, the first LED lamp LED1 and the second LED lamp LED2 are simultaneously turned on, along with the continuous rising of the voltage of the rechargeable battery K1, when a certain voltage value is reached, the voltage regulator tube Z1 is broken down, the triode Q3 is conducted, the anode of the second LED lamp LED2 is grounded, namely the voltage of the second LED lamp LED2 is reduced, at the moment, the second LED lamp LED2 is turned off, the first LED lamp LED1 is continuously turned on, namely the red lamp is turned off, the green lamp is turned on, and the fact that the rechargeable battery K1 is fully charged is indicated. In the embodiment, the first LED lamp LED1 and the second LED lamp LED2 are arranged close to each other using a process, so that when the first LED lamp LED1 and the second LED lamp LED2 are simultaneously turned on during the charging process, red light and green light can be neutralized to generate orange light, that is, when the indicator lamp is orange, the charging process is indicated, and when the indicator lamp is green, the full charge is indicated. Therefore, the output-adjustable booster circuit with the full charge indication function can be provided, and the circuit structure is practical and reliable and is low in cost. The lamp is suitable for illuminating lamps or fans, and is more flexible and convenient to use.
As shown in fig. 2, taking a fan as an example for explanation, the motor M with a fan as a load charges the rechargeable battery K1 by using the charging unit when the rechargeable battery K1 is dead, the first LED lamp LED1 and the second LED lamp LED2 are simultaneously turned on during charging, and when the rechargeable battery K1 is fully charged, the first LED lamp LED1 is turned on and the second LED lamp LED2 is turned off; when the rechargeable battery K1 supplies power, the potentiometer V1 is used for adjusting the resistance value to change the reference voltage of the feedback input end of the boost DC/DC controller U1, so that the purpose of adjusting the output voltage is achieved, and the driving voltage of the motor M is adjusted.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (8)
1. An output-adjustable boost circuit, comprising:
a rechargeable battery for supplying a driving power;
a charging unit that charges the rechargeable battery; and the number of the first and second groups,
the boost unit comprises a boost DC/DC controller, a potentiometer of an adjustable resistor, an inductor, a first diode and an NMOS (N-channel metal oxide semiconductor) tube, wherein a voltage input end of the potentiometer is connected with the rechargeable battery, a voltage output end of the potentiometer is connected with a feedback input end of the boost DC/DC controller, an output end of the boost DC/DC controller is connected with a grid electrode of the NMOS tube, one end of the inductor is connected with the rechargeable battery, the other end of the inductor is respectively connected with the anode of the first diode and the drain electrode of the NMOS tube, the source electrode of the NMOS tube is grounded, and the cathode of the first diode is connected with a load and is connected with the feedback input end of the boost DC/DC controller through the first resistor.
2. The output-adjustable boost circuit according to claim 1, wherein the boost unit further comprises a PMOS transistor, a source of the PMOS transistor is connected to the positive electrode of the rechargeable battery, a gate of the PMOS transistor is connected to the voltage input terminal of the potentiometer through a second resistor, a gate and a source of the PMOS transistor are connected through a third resistor, and a drain of the PMOS transistor is connected to the inductor.
3. The boost circuit with the adjustable output of claim 1, wherein the charging unit comprises a first LED lamp, a second LED lamp, a triode, a voltage regulator tube and a charging interface, the first LED lamp and the second LED lamp are LEDs with different colors and are connected in parallel between an anode of the charging interface and a ground terminal, the anode of the charging interface is respectively connected with an anode of the rechargeable battery and a cathode of the voltage regulator tube, the anode of the voltage regulator tube is grounded through a fourth resistor, a base of the triode is connected with the anode of the voltage regulator tube through a fifth resistor, a collector of the triode is connected with the anode of the second LED lamp, and an emitter of the triode is grounded.
4. The output-adjustable boost circuit according to claim 3, wherein a second diode, a third diode, a sixth resistor and a seventh resistor are further arranged between the anode of the charging interface and the anode of the rechargeable battery, the sixth resistor and the seventh resistor are connected in parallel and connected with the anodes of the second diode and the third diode, the anodes of the second diode and the third diode are connected with the anode of the rechargeable battery, and the cathode of the regulator tube is connected with the anodes of the second diode and the third diode through an eighth resistor.
5. The boost circuit with adjustable output of claim 4, wherein the charging interface is a USB interface.
6. The output-adjustable voltage boosting circuit according to any one of claims 1 to 5, wherein the voltage boosting DC/DC controller is a CE9908 type IC chip.
7. An illumination lamp, characterized in that it comprises the output-adjustable boost circuit of any one of the above claims 1 to 6.
8. A fan comprising the adjustable-output boost circuit of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020145744.3U CN211405868U (en) | 2020-01-22 | 2020-01-22 | Output-adjustable booster circuit, illuminating lamp and fan |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020145744.3U CN211405868U (en) | 2020-01-22 | 2020-01-22 | Output-adjustable booster circuit, illuminating lamp and fan |
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| CN211405868U true CN211405868U (en) | 2020-09-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825277A (en) * | 2021-08-20 | 2021-12-21 | 李俊辉 | LED vegetation lamp control circuit |
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- 2020-01-22 CN CN202020145744.3U patent/CN211405868U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825277A (en) * | 2021-08-20 | 2021-12-21 | 李俊辉 | LED vegetation lamp control circuit |
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