CN215072155U - Lithium battery booster circuit - Google Patents
Lithium battery booster circuit Download PDFInfo
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- CN215072155U CN215072155U CN202121143969.6U CN202121143969U CN215072155U CN 215072155 U CN215072155 U CN 215072155U CN 202121143969 U CN202121143969 U CN 202121143969U CN 215072155 U CN215072155 U CN 215072155U
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Abstract
The utility model discloses a lithium cell boost circuit includes at least: the switch control module is used for controlling the whole lithium battery booster circuit to be turned on and turned off; the boost module is electrically connected with the switch control module and is used for converting low voltage into required high voltage; the output voltage regulating module is electrically connected with the boosting module and at least comprises a regulating resistor and a dial switch, and the overall resistance value of the regulating resistor is changed by dialing the dial switch so as to regulate the magnitude of the output voltage; and the protection circuit is electrically connected with the boosting module and the output voltage regulating module and is used for preventing output short circuit and reverse connection of the protection circuit. The utility model discloses a dial switch in the module is adjusted to the stirring output voltage, makes the whole resistance of adjusting resistance change to can realize the output of many grades of voltage, adjust in a flexible way, be applicable to the equipment of different voltage output.
Description
Technical Field
The utility model relates to an electronic circuit technical field, concretely relates to lithium cell boost circuit.
Background
With the development of semiconductor technology and the popularization of digital control in recent years, the rapid development of the instrument industry is promoted. The instruments are various in types, and a large amount of manpower and material resources are needed for reading instrument data. Wireless remote transmission of data is a new trend. The gas meter has the characteristics that the difference of installation environments is large, the safety requires gas-electricity separation, and the real-time monitoring is not needed, so that the battery is mainly used as a power supply. However, the voltage of the standard lithium battery is only 3.6V, and cannot reach the supply voltage required by the equipment, so that the lithium battery is required by the equipment for boosting.
However, the devices are various in types, and the required voltages are different, and the output voltage of the conventional booster circuit is fixed once the device determines the output voltage, so that the use is not flexible enough. The utility model discloses in add dial switch, but manual toggle switch selects different circuits, exports different voltages, makes the application of circuit obtain the expansion by a wide margin.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough of above technique, provide a lithium cell boost circuit.
The utility model overcomes the technical scheme that its technical problem adopted is:
a lithium battery boost circuit, comprising at least:
the switch control module is used for controlling the whole lithium battery booster circuit to be turned on and turned off;
the boost module is electrically connected with the switch control module and is used for converting low voltage into required high voltage;
the output voltage regulating module is electrically connected with the boosting module and at least comprises a regulating resistor and a dial switch, and the overall resistance value of the regulating resistor is changed by dialing the dial switch so as to regulate the magnitude of the output voltage; and the number of the first and second groups,
and the protection circuit is electrically connected with the boosting module and the output voltage regulating module and is used for preventing output short circuit and reverse connection of the protection circuit.
Further, the switch control module includes a first switch tube, a second switch tube, a first resistor, a second resistor, a sixth resistor, and a seventh resistor, where a pin of the first resistor is connected to the input voltage VIN and the first pin of the first switch tube, another pin of the first resistor is connected to the second pin of the first switch tube and the pin of the second resistor, the third pin of the first switch tube is connected to the boost module, another pin of the second resistor is connected to the first pin of the second switch tube, the second pin of the second switch tube is connected to the pin of the sixth resistor and the pin of the seventh resistor, the third pin of the second switch tube and the another pin of the seventh resistor are both grounded, and another pin of the sixth resistor is connected to the control signal input CHK.
Furthermore, the boost module comprises a boost chip, a first capacitor, a second capacitor, a third resistor, a fourth resistor, a first inductor and a first diode, wherein one pin of the first capacitor is connected with the switch control module and the third pin and the fourth pin of the boost chip, the other pin of the first capacitor is grounded, the third pin and the fourth pin of the boost chip are simultaneously connected with one pin of the first inductor, the other pin of the first inductor is connected with the first pin and the second pin of the boost chip, one pin of the third resistor is connected with the tenth pin of the boost chip, one pin of the second capacitor is connected with the fifth pin of the boost chip, one pin of the fourth resistor is connected with the eighth pin of the boost chip, the other pin of the third capacitor, the positive electrode of the first diode is connected with the first pin and the second pin of the boost chip, the negative electrode of the first diode is connected with the output voltage regulating module, the other pin of the third resistor, the other pin of the second capacitor, the other pin of the third resistor, the third pin of the second capacitor, the third pin of the boost chip and the fourth pin of the boost chip, The other pin of the third capacitor and a sixth pin, a seventh pin, a eleventh pin, a twelfth pin, a thirteenth pin, a fourteenth pin and a fifteenth pin of the boost chip are all grounded.
Further, the model of the boost chip is TPS 61175.
Furthermore, the output voltage regulating module further comprises a fourth capacitor, the regulating resistor comprises a fifth resistor, an eighth resistor, a ninth resistor and a tenth resistor, the negative electrode of the first diode is connected with one pin of the fifth resistor and one pin of the fourth capacitor, the other pin of the fifth resistor is connected with the ninth pin of the boost chip and the third pin of the dial switch, the first pin of the dial switch is connected with one pin of the tenth resistor, the second pin of the dial switch is connected with one pin of the ninth resistor, the fourth pin of the dial switch is connected with one pin of the eighth resistor, and the other pin of the fourth capacitor, the other pin of the eighth resistor, the other pin of the ninth resistor and the other pin of the tenth resistor are all grounded.
Furthermore, the protection circuit comprises a self-recovery fuse and a second diode, one pin of the self-recovery fuse is connected with the cathode of the first diode, the other pin of the self-recovery fuse is connected with the anode of the second diode, and the cathode of the second diode is connected with the voltage output end VOUT.
Further, the protection circuit comprises an indicating circuit, and the indicating circuit is connected with the protection circuit.
Furthermore, the indicating circuit comprises a light emitting diode and an eleventh resistor, wherein the anode of the light emitting diode is connected with the protection circuit and the voltage output terminal VOUT, the cathode of the light emitting diode is connected with one pin of the eleventh resistor, and the other pin of the eleventh resistor is grounded.
The utility model has the advantages that:
the utility model discloses a dial switch in the module is adjusted to the stirring output voltage, makes the whole resistance of adjusting resistance change to can realize the output of many grades of voltage, adjust in a flexible way, be applicable to the equipment of different voltage output.
Drawings
Fig. 1 is a circuit diagram of a lithium battery boost circuit according to an embodiment of the present invention.
Detailed Description
In order to facilitate better understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are given by way of illustration only and thus do not limit the scope of the present invention.
As shown in fig. 1, the lithium battery boost circuit according to this embodiment includes a switch control module, a boost module, an output voltage regulation module, a protection circuit, and an indication circuit. The switch control module is used for controlling the whole lithium battery booster circuit to be turned on and turned off; the boosting module is electrically connected with the switch control module and is used for converting low voltage into required high voltage; the output voltage regulating module is electrically connected with the boosting module, the output voltage regulating module at least comprises a regulating resistor and a dial switch, and the overall resistance value of the regulating resistor is changed by dialing the dial switch so as to regulate the magnitude of the output voltage; the protection circuit is electrically connected with the boosting module and the output voltage regulating module and is used for preventing output short circuit and reverse connection of the protection circuit; the indicating circuit is connected with the protection circuit, and the indicating circuit can monitor the output state of the voltage at any time through the output voltage indicating lamp.
In this embodiment, the switch control module includes a first switch Q1, a second switch Q2, a first resistor R1, a second resistor R2, a sixth resistor R6, and a seventh resistor R7. The boost module comprises a boost chip U1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a third resistor R3, a fourth resistor R4, a first inductor L1 and a first diode D1, wherein the boost chip comprises 15 pins. The output voltage regulating module comprises a fourth capacitor C4 besides a regulating resistor and a dial switch P1, wherein the regulating resistor comprises a fifth resistor R5, an eighth resistor R8, a ninth resistor R9 and a tenth resistor R10. The protection circuit includes a self-restoring fuse PPTC1 and a second diode D2 (herein called an anti-reverse diode). The indicating circuit comprises a light emitting diode D3 and an eleventh resistor R11.
Specifically, one pin of the first resistor R1 is connected to the input voltage VIN and the first pin of the first switch tube Q1, the other pin of the first resistor R1 is connected to the second pin of the first switch tube Q1 and the first pin of the second resistor R2, the third pin of the first switch tube Q1 is connected to one pin of the first capacitor C1 and the third pin and the fourth pin of the boost chip U1, the other pin of the first capacitor C1 is grounded, the other pin of the second resistor R2 is connected to the first pin of the second switch tube Q2, the second pin of the second switch tube Q2 is connected to one pin of the sixth resistor R6 and the one pin of the seventh resistor R7, the third pin of the second switch tube Q2 and the other pin of the seventh resistor R7 are both grounded, and the other pin of the sixth resistor R6 is connected to the control signal input CHK; a third pin and a fourth pin of the boosting chip U1 are simultaneously connected with a pin of the first inductor L1, the other pin of the first inductor L1 is connected with a first pin and a second pin of the boosting chip U1, a pin of the third resistor R3 is connected with a tenth pin of the boosting chip U1, a pin of the second capacitor C2 is connected with a fifth pin of the boosting chip U1, a pin of the fourth resistor R4 is connected with an eighth pin of the boosting chip U1, the other pin is connected with a pin of the third capacitor C3, the positive electrode of the first diode D1 is connected with the first pin and the second pin of the boosting chip U1, the negative electrode of the first resistor R5 is connected with a pin of the fourth capacitor C4, the other pin of the third resistor R3, the other pin of the second capacitor C2, the other pin of the third capacitor C3, the sixth pin, the seventh pin, the twelfth pin, the eleventh pin, the fourteenth pin, the fifteenth pin and the fifteenth pin of the boosting chip U1 are all grounded; the other pin of the fifth resistor R5 is connected with the ninth pin of the boosting chip U1 and the third pin of the dial switch P1, the first pin of the dial switch P1 is connected with one pin of the tenth resistor R10, the second pin of the dial switch P1 is connected with one pin of the ninth resistor R9, the fourth pin of the dial switch P1 is connected with one pin of the eighth resistor R8, the other pin of the fourth capacitor C4 is grounded, the other pin of the eighth resistor R8, the other pin of the ninth resistor R9 and the other pin of the tenth resistor R10 are grounded; one pin of a self-recovery fuse PPTC1 is connected with the cathode of a first diode D1, the other pin is connected with the anode of a second diode D2, the anode of a light-emitting diode D3 is connected with the cathode of the second diode D2 and is simultaneously connected to a voltage output end VOUT, the cathode of a light-emitting diode D3 is connected with one pin of an eleventh resistor R11, the other pin of the eleventh resistor R11 is connected with the ground, when the circuit works normally, an indicator lamp (namely, the light-emitting diode D3) emits light, and when the circuit works abnormally or does not work, the indicator lamp does not emit light.
In this embodiment, the model of the boost chip U1 is TPS61175, the TPS61175 is a single-chip switching regulator with an integrated 3A, 40V power switch, the input voltage range is 2.9V to 18V, the device can be configured into various standard switching regulator topologies including boost, SEPIC and flyback, the device has a wide input voltage range, and can support applications where the input voltage is from multiple batteries or 5V, 12V regulated power supply rails. In the embodiment, the device is used as a boost chip, and the first switching tube Q1 is used for cutting off the power supply when the circuit does not work at ordinary times, so that the device is safe and can save power consumption. The CHK is a command for switching the power supply, and the first switch Q1 is turned on at a high level and the first switch Q1 is turned off at a low level. When the circuit works, the output voltage passes through the self-recovery fuse PPTC1, the anti-reverse diode D2 is supplied to rear-end equipment for use, and the voltage output condition is prompted through the indicator lamp. The output voltage is adjusted through the fifth resistor R5, the eighth resistor R8, the ninth resistor R9 and the tenth resistor R10, and the voltage is switched through the dial switch P1, so that the multi-level voltage can be output.
The foregoing has described only the basic principles and preferred embodiments of the present invention and numerous changes and modifications may be made by those skilled in the art in light of the above teachings and shall fall within the scope of the present invention.
Claims (8)
1. A lithium battery booster circuit is characterized by at least comprising:
the switch control module is used for controlling the whole lithium battery booster circuit to be turned on and turned off;
the boost module is electrically connected with the switch control module and is used for converting low voltage into required high voltage;
the output voltage regulating module is electrically connected with the boosting module and at least comprises a regulating resistor and a dial switch, and the overall resistance value of the regulating resistor is changed by dialing the dial switch so as to regulate the magnitude of the output voltage; and the number of the first and second groups,
and the protection circuit is electrically connected with the boosting module and the output voltage regulating module and is used for preventing output short circuit and reverse connection of the protection circuit.
2. The lithium battery boosting circuit according to claim 1, wherein the switch control module comprises a first switch tube, a second switch tube, a first resistor, a second resistor, a sixth resistor and a seventh resistor, one pin of the first resistor is connected to the input voltage VIN and the first pin of the first switch tube, the other pin of the first resistor is connected to the second pin of the first switch tube and the one pin of the second resistor, the third pin of the first switch tube is connected to the boosting module, the other pin of the second resistor is connected to the first pin of the second switch tube, the second pin of the second switch tube is connected to the one pin of the sixth resistor and the one pin of the seventh resistor, the third pin of the second switch tube and the other pin of the seventh resistor are both grounded, and the other pin of the sixth resistor is connected to the control signal input CHK.
3. The lithium battery boosting circuit according to claim 1, wherein the boosting module comprises a boosting chip, a first capacitor, a second capacitor, a third resistor, a fourth resistor, a first inductor and a first diode, one pin of the first capacitor is connected to the switching control module and the third pin and the fourth pin of the boosting chip, the other pin of the first capacitor is connected to ground, the third pin and the fourth pin of the boosting chip are simultaneously connected to one pin of the first inductor, the other pin of the first inductor is connected to the first pin and the second pin of the boosting chip, one pin of the third resistor is connected to the tenth pin of the boosting chip, one pin of the second capacitor is connected to the fifth pin of the boosting chip, one pin of the fourth resistor is connected to the eighth pin of the boosting chip, the other pin is connected to one pin of the third capacitor, the positive electrode of the first diode is connected to the first pin and the second pin of the boosting chip, and the negative electrode of the first diode is connected to the output voltage regulating module, the other pin of the third resistor, the other pin of the second capacitor, the other pin of the third capacitor, and the sixth pin, the seventh pin, the eleventh pin, the twelfth pin, the thirteenth pin, the fourteenth pin and the fifteenth pin of the boost chip are all grounded.
4. The lithium battery booster circuit of claim 3, wherein the type of the booster chip is TPS 61175.
5. The lithium battery boosting circuit according to claim 3, wherein the output voltage regulating module further comprises a fourth capacitor, the regulating resistor comprises a fifth resistor, an eighth resistor, a ninth resistor and a tenth resistor, the negative electrode of the first diode is connected with one pin of the fifth resistor and one pin of the fourth capacitor, the other pin of the fifth resistor is connected with the ninth pin of the boost chip and the third pin of the dial switch, the first pin of the dial switch is connected with one pin of the tenth resistor, the second pin of the dial switch is connected with one pin of the ninth resistor, the fourth pin of the dial switch is connected with one pin of the eighth resistor, and the other pin of the fourth capacitor is grounded, the other pin of the eighth resistor, the other pin of the ninth resistor and the other pin of the tenth resistor are grounded.
6. The lithium battery booster circuit of claim 5, wherein the protection circuit comprises a self-recovery fuse and a second diode, one pin of the self-recovery fuse is connected to a cathode of the first diode, the other pin of the self-recovery fuse is connected to an anode of the second diode, and a cathode of the second diode is connected to the voltage output terminal VOUT.
7. The lithium battery booster circuit according to any one of claims 1 to 6, further comprising an indication circuit, the indication circuit being connected to the protection circuit.
8. The lithium battery boosting circuit as claimed in claim 7, wherein the indication circuit comprises a light emitting diode and an eleventh resistor, wherein the anode of the light emitting diode is connected to the protection circuit and the voltage output terminal VOUT, the cathode of the light emitting diode is connected to one pin of the eleventh resistor, and the other pin of the eleventh resistor is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121143969.6U CN215072155U (en) | 2021-05-26 | 2021-05-26 | Lithium battery booster circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121143969.6U CN215072155U (en) | 2021-05-26 | 2021-05-26 | Lithium battery booster circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215072155U true CN215072155U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121143969.6U Active CN215072155U (en) | 2021-05-26 | 2021-05-26 | Lithium battery booster circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215072155U (en) |
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2021
- 2021-05-26 CN CN202121143969.6U patent/CN215072155U/en active Active
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