CN218449887U - Vehicle-mounted power supply conversion circuit - Google Patents
Vehicle-mounted power supply conversion circuit Download PDFInfo
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- CN218449887U CN218449887U CN202222765361.8U CN202222765361U CN218449887U CN 218449887 U CN218449887 U CN 218449887U CN 202222765361 U CN202222765361 U CN 202222765361U CN 218449887 U CN218449887 U CN 218449887U
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Abstract
The utility model discloses a vehicle mounted power supply converting circuit relates to the voltage supply module, and this vehicle mounted power supply converting circuit includes: the power supply module is used for supplying vehicle-mounted 12V direct current and outputting the direct current to the voltage magnitude control module and the switch control module; the switch control module is used for controlling the circuit to be conducted and receiving the control of the voltage control module; the voltage magnitude control module is used for controlling whether the switch control module is conducted or not and controlling the magnitude of the voltage output by the switch control module to the following module; the following module is used for improving the loaded capacity; compared with the prior art, the beneficial effects of the utility model are that: the utility model changes the duty ratio of the PWM signal output by the voltage control module and the conduction degree of the switch control module through the preset change-over switch, therefore, the output voltage is changed to output proper voltages of 12V, 9V, 5V, 3.3V and the like, and different requirements of users are met.
Description
Technical Field
The utility model relates to a voltage supply module specifically is a vehicle mounted power supply converting circuit.
Background
The vehicle-mounted power supply is usually 12V in voltage, the conversion circuit is mostly used for converting the voltage into alternating current, and the direct current is mostly directly 12V direct current.
Different rated voltage signals exist in different existing equipment chargers, a single power supply source is not enough to meet the requirements of users, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to provide a vehicle power supply converting circuit to solve the problem that current vehicle power supply can't satisfy the power supply of multiple model equipment.
In order to achieve the above object, the utility model provides a following technical scheme:
an onboard power conversion circuit comprising:
the power supply module is used for supplying vehicle-mounted 12V direct current and outputting the direct current to the voltage magnitude control module and the switch control module;
the switch control module is used for controlling the circuit to be conducted and receiving the control of the voltage size control module;
the voltage magnitude control module is used for controlling whether the switch control module is conducted or not and controlling the magnitude of the voltage output by the switch control module to the following module;
the following module is used for improving the loaded capacity;
the voltage output module is used for outputting voltage to supply to a load;
the power supply module is connected with the switch control module and the voltage magnitude control module, the voltage magnitude control module is connected with the switch control module, the switch control module is connected with the following module, and the following module is connected with the voltage output module.
As a further aspect of the present invention: the power supply module comprises a battery E1, a capacitor C1 and a resistor R1, wherein the positive electrode of the battery E1 is connected with one end of the capacitor C1, one end of the resistor R1 and the voltage control module, the negative electrode of the battery E1 is grounded, the other end of the capacitor C1 is grounded, and the other end of the resistor R1 is connected with the switch control module.
As a further aspect of the present invention: the switch control module comprises an MOS tube V1, a capacitor C2 and a resistor R2, a power supply module is connected with a D pole of the MOS tube V1, a voltage magnitude control module is connected with a G pole of the MOS tube V1, one end of the capacitor C2, one end of the resistor R2 and a following module are connected with an S pole of the MOS tube V1, the other end of the capacitor C2 is grounded, and the other end of the resistor R2 is grounded.
As a further aspect of the present invention: the voltage control module comprises a timer U2, a resistor R4, a resistor R5, a potentiometer RP1, a potentiometer RP2, a diode D1, a diode D2, a capacitor C4, a capacitor C5 and a resistor R6, wherein one end of the resistor R4 is connected with a power supply module, the other end of the resistor R4 is connected with a No. 4 pin of the amplifier U2, a No. 8 pin of the amplifier U2 and one end of the resistor R5, the other end of the resistor R5 is connected with a No. 7 pin of the amplifier U2, one end of the potentiometer RP1 and one end of the potentiometer RP2, the other end of the potentiometer RP1 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with one end of the capacitor C4, the anode of the diode D2, a No. 2 pin of the timer U2 and a No. 6 pin of the timer U2, the cathode of the diode D2 is connected with the other end of the potentiometer RP2, the other end of the capacitor C4 is grounded, the No. 5 pin of the timer U2 is grounded through the capacitor C5, the pin 1 of the timer U2 is grounded, the pin 3 of the timer U2 is connected with one end of the resistor R6, and the resistor R6 is connected with the switch control module.
As the utility model discloses further scheme again: the following module comprises an amplifier U1, a capacitor C3 and a resistor R3, the in-phase end of the amplifier U1 is connected with the switch control module, the inverting end of the amplifier U1 is connected with the output end of the amplifier U1, one end of the capacitor C3, one end of the resistor R3 and the voltage output module, the other end of the capacitor C3 is grounded, and the other end of the resistor R3 is grounded.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a change voltage size control module output PWM signal's duty cycle, change on-off control module's conduction degree through set for change over switch in advance to this changes output voltage's size, makes its output suitable 12V, 9V, 5V, 3.3V equipotential voltage, satisfies the different demands of user.
Drawings
Fig. 1 is a schematic diagram of a vehicle-mounted power conversion circuit.
Fig. 2 is a circuit diagram of an onboard power conversion circuit.
Fig. 3 is a schematic diagram of a switch.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, the present invention provides a vehicle-mounted power conversion circuit, including:
the power supply module is used for supplying vehicle-mounted 12V direct current and outputting the direct current to the voltage magnitude control module and the switch control module;
the switch control module is used for controlling the circuit to be conducted and receiving the control of the voltage control module;
the voltage magnitude control module is used for controlling whether the switch control module is conducted or not and controlling the magnitude of the voltage output by the switch control module to the following module;
the following module is used for improving the loaded capacity;
the voltage output module is used for outputting voltage to supply to a load;
the power supply module is connected with the switch control module and the voltage magnitude control module, the voltage magnitude control module is connected with the switch control module, the switch control module is connected with the following module, and the following module is connected with the voltage output module.
In this embodiment: referring to fig. 2, the power supply module includes a battery E1, a capacitor C1, and a resistor R1, wherein a positive electrode of the battery E1 is connected to one end of the capacitor C1, one end of the resistor R1, and the voltage control module, a negative electrode of the battery E1 is grounded, another end of the capacitor C1 is grounded, and another end of the resistor R1 is connected to the switch control module.
The battery E1 supplies 12V voltage and outputs the voltage to the voltage magnitude control module and the switch control module, wherein the resistor R1 is used for limiting current.
In this embodiment: referring to fig. 2, the switch control module includes an MOS transistor V1, a capacitor C2, and a resistor R2, the D pole of the MOS transistor V1 is connected to the power supply module, the G pole of the MOS transistor V1 is connected to the voltage magnitude control module, the S pole of the MOS transistor V1 is connected to one end of the capacitor C2, one end of the resistor R2, and the following module, the other end of the capacitor C2 is grounded, and the other end of the resistor R2 is grounded.
The conduction frequency of the MOS transistor V1 depends on the magnitude of the PWM duty ratio received by the G pole, so that the magnitude of the output voltage is changed.
In this embodiment: referring to fig. 2 and 3, the voltage control module includes a timer U2, a resistor R4, a resistor R5, a potentiometer RP1, a potentiometer RP2, a diode D1, a diode D2, a capacitor C4, a capacitor C5, and a resistor R6, one end of the resistor R4 is connected to the power supply module, the other end of the resistor R4 is connected to the pin No. 4 of the amplifier U2, the pin No. 8 of the amplifier U2, and one end of the resistor R5, the other end of the resistor R5 is connected to the pin No. 7 of the amplifier U2, one end of the potentiometer RP1, and one end of the potentiometer RP2, the other end of the potentiometer RP1 is connected to the anode of the diode D1, the cathode of the diode D1 is connected to the anode of the capacitor C4, the pin No. 2 of the timer U2, and the pin No. 6 of the timer U2, the cathode of the diode D2 is connected to the other end of the potentiometer RP2, the other end of the capacitor C4 is grounded, the pin No. 5 of the timer U2 is connected to the ground, and one end of the resistor R6 is connected to the switch control module.
The sliding end positions of the potentiometers RP1 and RP2 are changed through the change-over switches S1 and S2, the determined resistance values of the potentiometers RP1 and RP2 corresponding to each change-over switch are changed, the charging and discharging speed of the capacitor C4 is changed through the change of the resistance values of the potentiometers RP1 and RP2, the duty ratio of an output PWM signal of the timer U2 (555 timer) is further changed, and the conduction frequency of the MOS tube V1 is changed.
In this embodiment: referring to fig. 2, the following module includes an amplifier U1, a capacitor C3, and a resistor R3, the non-inverting terminal of the amplifier U1 is connected to the switch control module, the inverting terminal of the amplifier U1 is connected to the output terminal of the amplifier U1, one terminal of the capacitor C3, one terminal of the resistor R3, and the voltage output module, the other terminal of the capacitor C3 is grounded, and the other terminal of the resistor R3 is grounded.
Amplifier U1 is in the utility model discloses in do the follower and use, improve and take load capacity, cut off load circuit to preceding stage circuit's interference.
The utility model discloses a theory of operation is: the power supply module supplies vehicle-mounted 12V direct current and outputs the direct current to the voltage magnitude control module and the switch control module, the switch control module controls the circuit to be conducted and receives the control of the voltage magnitude control module, the voltage magnitude control module controls whether the switch control module is conducted or not and controls the voltage magnitude output by the switch control module to the following module, the following module improves the capacity with the load, and the voltage output module outputs voltage to supply the load.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A vehicle power supply conversion circuit is characterized in that:
this on-vehicle power supply converting circuit includes:
the power supply module is used for supplying vehicle-mounted 12V direct current and outputting the direct current to the voltage magnitude control module and the switch control module;
the switch control module is used for controlling the circuit to be conducted and receiving the control of the voltage control module;
the voltage magnitude control module is used for controlling whether the switch control module is conducted or not and controlling the magnitude of the voltage output by the switch control module to the following module;
the following module is used for improving the loaded capacity;
the voltage output module is used for outputting voltage to supply to a load;
the power supply module is connected with the switch control module and the voltage magnitude control module, the voltage magnitude control module is connected with the switch control module, the switch control module is connected with the following module, and the following module is connected with the voltage output module.
2. The vehicle-mounted power conversion circuit according to claim 1, wherein the power supply module comprises a battery E1, a capacitor C1 and a resistor R1, wherein a positive electrode of the battery E1 is connected with one end of the capacitor C1, one end of the resistor R1 and the voltage control module, a negative electrode of the battery E1 is grounded, the other end of the capacitor C1 is grounded, and the other end of the resistor R1 is connected with the switch control module.
3. The vehicle-mounted power conversion circuit according to claim 1, wherein the switch control module comprises an MOS tube V1, a capacitor C2 and a resistor R2, the D pole of the MOS tube V1 is connected with the power supply module, the G pole of the MOS tube V1 is connected with the voltage magnitude control module, the S pole of the MOS tube V1 is connected with one end of the capacitor C2, one end of the resistor R2 and the following module, the other end of the capacitor C2 is grounded, and the other end of the resistor R2 is grounded.
4. The vehicle-mounted power conversion circuit according to claim 1 or 3, wherein the voltage control module comprises a timer U2, a resistor R4, a resistor R5, a potentiometer RP1, a potentiometer RP2, a diode D1, a diode D2, a capacitor C4, a capacitor C5 and a resistor R6, one end of the resistor R4 is connected with the power supply module, the other end of the resistor R4 is connected with a pin No. 4 of the amplifier U2, a pin No. 8 of the amplifier U2 and one end of the resistor R5, the other end of the resistor R5 is connected with a pin No. 7 of the amplifier U2, one end of the potentiometer RP1 and one end of the potentiometer RP2, the other end of the potentiometer RP1 is connected with an anode of the diode D1, a cathode of the diode D1 is connected with one end of the capacitor C4, an anode of the diode D2, a pin No. 2 of the timer U2 and a pin No. 6 of the timer U2, a cathode of the diode D2 is connected with the other end of the potentiometer RP2, the other end of the capacitor C4 is grounded, a pin No. 5 of the timer U2 is connected with a ground, and one end of the resistor R2 is connected with the resistor R6 of the resistor R2 and the resistor R6.
5. The vehicle-mounted power conversion circuit according to claim 1, wherein the following module comprises an amplifier U1, a capacitor C3 and a resistor R3, the in-phase end of the amplifier U1 is connected with the switch control module, the inverting end of the amplifier U1 is connected with the output end of the amplifier U1, one end of the capacitor C3, one end of the resistor R3 and the voltage output module, the other end of the capacitor C3 is grounded, and the other end of the resistor R3 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222765361.8U CN218449887U (en) | 2022-10-20 | 2022-10-20 | Vehicle-mounted power supply conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222765361.8U CN218449887U (en) | 2022-10-20 | 2022-10-20 | Vehicle-mounted power supply conversion circuit |
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| Publication Number | Publication Date |
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| CN218449887U true CN218449887U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222765361.8U Active CN218449887U (en) | 2022-10-20 | 2022-10-20 | Vehicle-mounted power supply conversion circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116088625A (en) * | 2023-04-07 | 2023-05-09 | 河北极太科技有限公司 | Output voltage regulating circuit |
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2022
- 2022-10-20 CN CN202222765361.8U patent/CN218449887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116088625A (en) * | 2023-04-07 | 2023-05-09 | 河北极太科技有限公司 | Output voltage regulating circuit |
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