CN217010403U - Charger circuit capable of adapting to multi-voltage output - Google Patents
Charger circuit capable of adapting to multi-voltage output Download PDFInfo
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- CN217010403U CN217010403U CN202220520632.0U CN202220520632U CN217010403U CN 217010403 U CN217010403 U CN 217010403U CN 202220520632 U CN202220520632 U CN 202220520632U CN 217010403 U CN217010403 U CN 217010403U
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Abstract
The utility model relates to a charger circuit capable of adapting to multi-voltage output, which comprises a charging circuit, a battery detection circuit, a voltage regulation circuit and a controller, wherein the charging circuit is used for providing a charging signal; the battery voltage is obtained through the voltage detection circuit and is sent to the controller, so that the controller determines the output voltage, the controller controls the voltage regulation circuit to output a control signal to the charging circuit according to the battery voltage, and the voltage of the output charging signal is changed; the utility model can change the output voltage according to the voltage of the battery, thereby charging different devices; meanwhile, the output voltage can be changed by changing part of devices without redesigning a circuit board, so that the design cost and the material cost can be saved.
Description
Technical Field
The utility model relates to the field of charging circuits, in particular to a charger circuit suitable for multi-voltage output.
Background
With the progress of science and technology and society, more and more mobile terminals such as portable notebook computers, tablet computers and smart phones are popularized in the lives of people, and with the endless emergence of the mobile terminals and the changing of functions, people are more and more away from the mobile terminals which are continuously updated. However, the limited size of the mobile terminal makes the self-contained battery capacity limited, and the rhythm of life of people becomes faster and faster, so an excellent solution to the problems of endurance and quick charging is needed. This is why the current mobile power supplies and portable chargers are used in large quantities.
One person or one family, even a small group on the same trip, have a plurality of mobile terminal devices (including notebook computers), the voltage required for charging each mobile device will be different, and the charging input sockets of different notebook computers will be basically different, so that, under the present circumstances, one person needs to take a plurality of chargers or mobile power supplies with different applications to charge different devices.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a charger circuit adaptable to multiple voltage outputs, capable of outputting multiple voltage signals to charge different devices.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model relates to a charger circuit capable of adapting to multi-voltage output, which comprises a charging circuit, a battery detection circuit, a voltage regulation circuit and a controller, wherein the charging circuit is used for providing a charging signal;
the input end of the charging circuit is externally connected with a power supply, and the output end of the charging circuit is connected with the input end of the battery detection circuit;
the output end of the battery detection circuit is connected with the controller, the controller is connected with the input end of the voltage regulation circuit, and the output end of the voltage regulation circuit is connected with the charging circuit.
Optionally, the charging circuit includes a square wave generating circuit for generating a square wave signal, a resonant network for resonating the square wave signal and generating an oscillation signal, a transformer, and a rectifying circuit for converting the oscillation signal into a direct current charging signal;
the input end of the square wave generating circuit is externally connected with a power supply, and the output end of the square wave generating circuit is connected with the input end of the resonant network;
the output end of the resonant network is coupled with the input end of the rectifying circuit through a transformer.
Optionally, the voltage adjusting circuit includes a sampling circuit for sampling a charging signal and a voltage-current loop for adjusting a duty ratio of the square wave signal, an input end of the sampling circuit is connected to an output end of the rectifying circuit, an output end of the sampling circuit and the controller are connected to an input end of the voltage-current loop, and an output end of the voltage-current loop is connected to the square wave generating circuit.
Optionally, the battery detection circuit includes a first resistor, a second resistor and a protection resistor, one end of the first resistor and one end of the second resistor after being connected in series are connected to the charging circuit, the other end of the first resistor and the other end of the second resistor after being connected in series are grounded, and the acquisition port of the controller is connected in series after being connected in series to the protection resistor between the first resistor and the second resistor.
Optionally, the charging circuit is connected to the external power supply through a protection circuit.
The utility model has the beneficial effects that: according to the charger circuit suitable for multi-voltage output, the battery voltage is obtained through the battery detection circuit and is sent to the controller, so that the controller determines the output voltage, the controller controls the voltage regulation circuit to output the control signal to the charging circuit according to the battery voltage, and the voltage of the output charging signal is changed; the utility model can change the output voltage according to the voltage of the battery, thereby charging different devices; meanwhile, the output voltage can be changed by changing part of devices without redesigning a circuit board, so that the design cost and the material cost can be saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for a person skilled in the art, other relevant drawings can be obtained from the drawings without inventive effort:
FIG. 1 is a circuit diagram of a square wave generating circuit, resonant network, of the present invention;
FIG. 2 is a circuit diagram of a rectifying circuit and a battery detection circuit of the present invention;
FIG. 3 is a circuit diagram of the controller and voltage regulating circuit of the present invention.
Detailed Description
As shown in fig. 1-3: a charger circuit adaptable to multiple voltage outputs of the present embodiment includes a charging circuit for providing a charging signal, a battery detection circuit for detecting a battery voltage, a voltage regulation circuit for generating a regulation signal, and a controller.
The input end of the charging circuit is externally connected with a power supply, and the output end of the charging circuit is connected with the input end of the battery detection circuit.
The output end of the battery detection circuit is connected with the controller, the controller is connected with the input end of the voltage regulating circuit, and the output end of the voltage regulating circuit is connected with the charging circuit.
Optionally, the charging circuit includes a square wave generating circuit for generating a square wave signal, a resonant network for resonating the square wave signal and generating an oscillation signal, a transformer, and a rectifying circuit for converting the oscillation signal into a direct current charging signal;
the input end of the square wave generating circuit is externally connected with a power supply, and the output end of the square wave generating circuit is connected with the input end of the resonant network.
The output end of the resonant network is coupled with the input end of the rectifying circuit through the transformer.
The battery detection circuit is used for acquiring the battery voltage and sending the battery voltage to the controller, so that the controller determines the output voltage, and the controller controls the voltage regulation circuit to output a control signal to the charging circuit according to the battery voltage, so that the voltage of the output charging signal is changed; the utility model can change the output voltage according to the battery voltage, thereby charging different devices.
Specifically, the square wave generator comprises a resonant controller and a MOS (metal oxide semiconductor) transistor half bridge, and a square wave signal is output through the MOS transistor of the resonant controller.
The voltage regulating circuit comprises a sampling circuit for sampling a charging signal and a voltage current loop for regulating the duty ratio of a square wave signal, the input end of the sampling circuit is connected with the output end of the rectifying circuit, the output end of the sampling circuit and the controller are connected with the input end of the voltage current loop, and the output end of the voltage current loop is connected with the resonance controller in the square wave generating circuit.
The voltage current loop is used for generating an adjusting signal according to the sampling signal and a reference signal output by the controller, and the resonance controller adjusts the output voltage according to the adjusting signal; the controller regulates the voltage reference by regulating the VFB, thereby regulating the output signal; the duty ratio of the output resonance signal is changed through the resonance controller, and the voltage value of the charging signal is changed after rectification.
Optionally, the no-load detection circuit includes a resistor R212, a resistor R213, a resistor R211, and a capacitor C213, one end of the resistor R212 and the resistor R213 connected in series is connected to an output line of the charging output circuit, one end of the resistor R211 is connected between the resistor R212 and the resistor R213, the other end of the resistor R211 is connected to a port of the controller, and the voltage signal of the battery (the battery is connected to BAT + and BAT-) is collected by dividing the voltage through the resistor R212 and the resistor R213.
Optionally, the charging circuit is connected to an external power source through a protection circuit, specifically, a lightning and surge protection circuit, a rectifier and an EMI circuit, which are sequentially disposed on the power line. In addition, an FPC (power factor correction) circuit is provided in the protection and conversion circuit, thereby reducing power consumption.
In summary, according to the charger circuit adaptable to multi-voltage output, a required charging voltage value of a battery is acquired by collecting a battery voltage, then a reference voltage of a voltage current loop is changed by adjusting a VRF through a controller, the reference voltage is fed back to a resonance controller through an optocoupler, the resonance controller changes a duty ratio of an output square wave signal according to a feedback signal, so that the duty ratio of a resonance signal is changed, the resonance signal is output to a rectifying circuit through a transformer, and the rectified resonance signal is converted into a direct current charging signal corresponding to a target voltage value, so that the corresponding battery is charged; meanwhile, the output voltage can be changed by changing part of devices without redesigning a circuit board, so that the design cost and the material cost can be saved.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. A charger circuit adaptable to multiple voltage outputs, characterized in that: comprises a charging circuit for providing a charging signal, a battery detection circuit for detecting the voltage of the battery, a voltage regulation circuit for generating a regulation signal and a controller;
the input end of the charging circuit is externally connected with a power supply, and the output end of the charging circuit is connected with the input end of the battery detection circuit;
the output end of the battery detection circuit is connected with the controller, the controller is connected with the input end of the voltage regulation circuit, and the output end of the voltage regulation circuit is connected with the charging circuit.
2. The charger circuit adaptable to multiple voltage outputs of claim 1, wherein: the charging circuit comprises a square wave generating circuit for generating square wave signals, a resonance network for resonating the square wave signals and generating oscillation signals, a transformer and a rectifying circuit for converting the oscillation signals into direct current charging signals;
the input end of the square wave generating circuit is externally connected with a power supply, and the output end of the square wave generating circuit is connected with the input end of the resonant network;
the output end of the resonant network is coupled with the input end of the rectifying circuit through a transformer.
3. A charger circuit adaptable to multiple voltage outputs as claimed in claim 2, wherein: the voltage regulating circuit comprises a sampling circuit for sampling a charging signal and a voltage current loop for regulating the duty ratio of the square wave signal, the input end of the sampling circuit is connected with the output end of the rectifying circuit, the output end of the sampling circuit is connected with the input end of the voltage current loop, and the output end of the voltage current loop is connected with the square wave generating circuit.
4. The charger circuit adaptable to multiple voltage outputs of claim 1, wherein: the battery detection circuit comprises a first resistor, a second resistor and a protection resistor, wherein one end of the first resistor, which is connected with the second resistor in series, is connected to the charging circuit, the other end of the first resistor, which is connected with the second resistor in series, is grounded, and the acquisition port of the controller is connected with the protection resistor in series and then is connected between the first resistor and the second resistor.
5. The charger circuit adaptable to multiple voltage outputs of claim 1, wherein: the charging circuit is connected with the power supply through a protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220520632.0U CN217010403U (en) | 2022-03-10 | 2022-03-10 | Charger circuit capable of adapting to multi-voltage output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220520632.0U CN217010403U (en) | 2022-03-10 | 2022-03-10 | Charger circuit capable of adapting to multi-voltage output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217010403U true CN217010403U (en) | 2022-07-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220520632.0U Active CN217010403U (en) | 2022-03-10 | 2022-03-10 | Charger circuit capable of adapting to multi-voltage output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217010403U (en) |
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2022
- 2022-03-10 CN CN202220520632.0U patent/CN217010403U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240618 Address after: No. 28 Jianhong Road, Xinwu District, Wuxi City, Jiangsu Province, 214028 Patentee after: Wuxi Weisheng New Energy Technology Co.,Ltd. Country or region after: China Address before: 214000 room 506, building 11-2, Hongyi Road, Xinwu District, Wuxi City, Jiangsu Province Patentee before: Wuxi Xuanji Electronic Technology Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |