CN118054532A - Charging control circuit, power adapter and electronic product - Google Patents
Charging control circuit, power adapter and electronic product Download PDFInfo
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- CN118054532A CN118054532A CN202211431041.7A CN202211431041A CN118054532A CN 118054532 A CN118054532 A CN 118054532A CN 202211431041 A CN202211431041 A CN 202211431041A CN 118054532 A CN118054532 A CN 118054532A
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- 238000004804 winding Methods 0.000 claims abstract description 57
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- 239000003990 capacitor Substances 0.000 claims description 64
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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Abstract
The disclosure relates to the technical field of charging circuits, and particularly provides a charging control circuit, a power adapter and an electronic product. The utility model provides a charge control circuit, including power supply circuit, transformer and leakage inductance recovery circuit, power supply circuit is used for connecting external power supply, the transformer includes the primary winding and the secondary winding of intercoupling, the primary winding passes through first switch spare and connects power supply circuit, first switch spare is used for controlling the break-make of primary winding and power supply circuit, the secondary winding passes through the second switch spare and connects the load end, the second switch spare is used for controlling the break-make of secondary winding and load end, leakage inductance recovery circuit includes first electric capacity and third switch spare, first electric capacity is parallelly connected with the primary winding of transformer for the leakage inductance energy of storage transformer, the third switch spare is used for controlling the break-make of first electric capacity and primary winding. In the embodiment of the disclosure, the leakage inductance recovery circuit is utilized to fully utilize the leakage inductance energy of the transformer, so that the charging efficiency is improved, and the heating value is reduced.
Description
Technical Field
The disclosure relates to the technical field of charging circuits, and in particular relates to a charging control circuit, a power adapter and an electronic product.
Background
With the development of rapid charging technology at present, the charging power of electronic equipment chargers of various large manufacturers is higher and higher, and meanwhile, the charging efficiency of the chargers is lower, so that a large amount of heat is generated in the charging process, and energy waste is caused.
Disclosure of Invention
In order to improve the charging efficiency of electronic equipment, the embodiment of the disclosure provides a charging control circuit, a power adapter with the circuit and an electronic product.
In a first aspect, embodiments of the present disclosure provide a charge control circuit, including:
A power supply circuit for connecting an external power supply;
The transformer comprises a primary winding and a secondary winding which are mutually coupled, the primary winding is connected with the power circuit through a first switch piece, and the first switch piece is used for controlling the on-off of the primary winding and the power circuit; the secondary winding is connected with a load end through a second switch piece, and the second switch piece is used for controlling the on-off of the secondary winding and the load end;
The leakage inductance recovery circuit comprises a first capacitor and a third switch piece, wherein the first capacitor is connected with the primary winding of the transformer in parallel and is used for storing leakage inductance energy of the transformer, and the third switch piece is used for controlling on-off of the first capacitor and the primary winding.
In some embodiments, the power circuit includes a rectifying circuit connected to an external ac power source for converting the external ac power source to a dc power source.
In some embodiments, the rectifying circuit includes a first diode, a second diode, a third diode, and a fourth diode, one end of the external ac power source is connected to the cathodes of the first diode and the third diode, respectively, and the other end is connected to the anodes of the second diode and the fourth diode, respectively.
In some embodiments, the power supply circuit further comprises a voltage stabilizing circuit comprising a second capacitor connected in parallel with the rectifying circuit.
In some embodiments, the charge control circuit of the present disclosure further includes a third capacitor connected in parallel with the first switch for controlling the turn-off speed of the first switch.
In some embodiments, the charge control circuit of the present disclosure further includes a fourth capacitor connected in parallel with the second switch for controlling the turn-off speed of the second switch.
In some embodiments, the charging control circuit of the present disclosure further includes a fifth capacitor, one end of which is connected to the primary winding, and the other end of which is connected to the magnetic core of the transformer.
In some embodiments, the charging control circuit of the present disclosure further includes a controller, where output ends of the controller circuit are respectively connected to the first switch element, the second switch element, and the third switch element, and are used for controlling on-off of the first switch element, the second switch element, and the third switch element.
In some embodiments, the charging control circuit of the present disclosure further includes a sampling circuit, an input end is connected to the load end, and an output end is connected to the controller, where the sampling circuit is configured to sample a charging parameter, so that the controller controls on-off of the first switch element, the second switch element, and the third switch element according to the charging parameter.
In a second aspect, embodiments of the present disclosure provide a power adapter including a charge control circuit according to any embodiment of the aspects.
In a third aspect, embodiments of the present disclosure provide an electronic product, including:
An electronic device; and
The power adapter of any embodiment of the second aspect, wherein the power adapter charges the electronic device by connecting with an external power source.
The utility model provides a charge control circuit, including power supply circuit, transformer and leakage inductance recovery circuit, power supply circuit is used for connecting external power supply, the transformer includes the primary winding and the secondary winding of intercoupling, the primary winding passes through first switch spare and connects power supply circuit, first switch spare is used for controlling the break-make of primary winding and power supply circuit, the secondary winding passes through the second switch spare and connects the load end, the second switch spare is used for controlling the break-make of secondary winding and load end, leakage inductance recovery circuit includes first electric capacity and third switch spare, first electric capacity is parallelly connected with the primary winding of transformer for the leakage inductance energy of storage transformer, the third switch spare is used for controlling the break-make of first electric capacity and primary winding. In the embodiment of the disclosure, the leakage inductance recovery circuit is utilized to fully utilize the leakage inductance energy of the transformer, so that the charging efficiency is improved, and the heating value is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the prior art, the drawings that are required in the detailed description or the prior art will be briefly described, it will be apparent that the drawings in the following description are some embodiments of the present disclosure, and other drawings may be obtained according to the drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic circuit diagram of a flyback converter according to the related art.
Fig. 2 is a circuit configuration diagram of a charge control circuit according to some embodiments of the present disclosure.
Fig. 3 is a circuit configuration diagram of a charge control circuit according to some embodiments of the present disclosure.
Fig. 4 is a block diagram of an electronic device in accordance with some embodiments of the present disclosure.
Detailed Description
The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure. In addition, technical features related to different embodiments of the present disclosure described below may be combined with each other as long as they do not make a conflict with each other.
With the development of electronic technology, more and more electronic products are in life scenes of people, and taking a smart phone as an example, a quick charging technology has become one of standard functions of the smart phone, so the quick charging technology has become one of key research directions of manufacturers of large mobile phones.
The charger of the electronic product generally adopts flyback converter topology, and nowadays, as the power of the charger is higher and higher, the charger is limited by the charging efficiency, and a large amount of heat can be generated by the electronic product during charging, so that the energy waste is caused.
Therefore, in order to improve the charging efficiency of electronic products, reduce energy waste, actively respond to and promote national claiming, and realize green technical innovation, the embodiment of the disclosure provides a charging control circuit and a power adapter with the same.
In a first aspect, embodiments of the present disclosure provide a charging control circuit that may be applied to a power adapter of an electronic device, where charging of the electronic device is achieved through the charging control circuit of the present disclosure.
In the embodiment of the disclosure, the charging control circuit is a topology structure based on a flyback converter, and for facilitating understanding of the circuit structure and principle of the disclosure, the circuit structure and principle of the flyback converter are briefly described below.
As shown in fig. 1, the input of the flyback converter circuit is a power input terminal, which is connected to one end of the primary side of the transformer, and the other end of the primary side returns to the input through the switch 1. The secondary side of the transformer is electromagnetically coupled with the primary side, and the secondary side is connected to the output, namely the load, through the switch 2.
When the flyback converter circuit works, firstly the switch 1 is closed, the switch 2 is opened, and the primary winding of the transformer stores energy. At the end of primary winding energy storage, switch 1 is opened and switch 2 is closed, the excitation inductance of the transformer is clamped by the reflected voltage of the secondary side, and the primary side energy is transferred to the secondary side by the electromagnetic induction principle, so that the secondary side load power supply is realized.
The transformer in the flyback converter circuit also has the function of an energy storage inductor, and is also called an energy storage transformer. In the flyback converter circuit, leakage inductance exists in the transformer, and the leakage inductance means that magnetic force lines on the primary side cannot completely pass through secondary coils on the secondary side, so that leakage inductance is generated, and the leakage inductance can be increased along with the increase of working frequency, so that strong electromagnetic interference, namely interference noise, is generated in the circuit.
Since leakage inductance energy cannot be transmitted to the secondary side of the transformer, in the related art, an absorption circuit (for example, an RCD absorption circuit) is often arranged on the primary side of the transformer to consume the leakage inductance energy, the absorption circuit is equivalent to a resistor, and the leakage inductance energy is consumed by a resistive heat mode. However, in this way, leakage inductance energy is consumed in a thermal resistance manner, so that energy waste is caused, not only is charging efficiency lowered, but also a large amount of heat is generated in the charging process, and overheat protection is easily triggered.
Therefore, in the embodiment of the disclosure, a leakage inductance recovery circuit is disposed on the primary side of the transformer, unlike the absorption circuit in the related art, the leakage inductance recovery circuit of the embodiment of the disclosure consumes the leakage inductance energy not in a thermal resistance manner, but stores the leakage inductance energy through a capacitor, and transfers the leakage inductance energy stored in the capacitor to the primary side winding based on the resonance principle after the primary side energy storage of the transformer is consumed, and then transfers the leakage inductance energy to the secondary side. The following is a description with reference to fig. 2.
As shown in fig. 2, in some embodiments, the charge control circuit of the disclosed examples includes a power supply circuit, a transformer, and a leakage inductance recycling circuit.
The power supply circuit refers to a circuit for connecting an external power source, for example, in some embodiments, the power supply circuit includes a rectifying circuit so that alternating current of the utility power can be converted into direct current to supply power to the post-stage transformer. In other embodiments, to improve dc voltage stability, the power supply circuit may further include a voltage stabilizing circuit, which is described in the following embodiments.
The transformer comprises a primary winding and a secondary winding, and the primary winding and the secondary winding are mutually coupled through an electromagnetic principle. One end of the primary winding is connected with a power supply circuit, the other end of the primary winding is connected with a first switch piece Q1, and the first switch piece Q1 is connected with the power supply circuit, so that the control of primary energy storage of the transformer can be realized by controlling the on-off of the first switch piece Q1.
One end of the secondary winding is connected with a resistor R0, the other end of the secondary winding is connected with a second switch piece Q2, the second switch piece Q2 is connected with the other end of the resistor R0, and the resistor R0 is a load end. In the example of the disclosure, the load end R0 is further connected in parallel with a capacitor C0, and the capacitor C0 plays a role in output voltage stabilization.
In this disclosed embodiment, a leakage inductance recovery circuit is provided on the primary side of a transformer, as shown in fig. 2, the leakage inductance recovery circuit includes a first capacitor C1 and a third switching element Q3, the first capacitor C1 is connected in parallel to two ends of the primary winding, and the third switching element Q3 is provided on a connection circuit between the first capacitor C1 and the primary winding.
Based on the foregoing, the transformer has leakage inductance, and the leakage inductance energy cannot be transmitted to the secondary side supply load, so in the embodiment of the disclosure, the first capacitor C1 stores energy of the leakage inductance, and the third switch Q3 is controlled to cooperate to transmit the leakage inductance energy stored by the first capacitor C1 to the secondary side supply load. The following describes the operation principle of the charge control circuit of the present disclosure.
First, similar to a conventional flyback converter circuit, the first switching element Q1 is turned on, the second switching element Q2 and the third switching element Q3 are turned off, and the primary winding of the transformer stores energy. At the end of energy storage of the transformer, the first switch piece Q1 and the second switch piece Q2 are disconnected, the third switch piece Q3 is conducted, and at the moment, leakage inductance of the transformer and the first capacitor C1 form an LC oscillating circuit, namely, the leakage inductance and the first capacitor C1 generate resonance, so that the energy of the leakage inductance can be transferred to the first capacitor C1 for storage.
And then the first switching element Q1 and the third switching element Q3 are controlled to be disconnected, the second switching element Q2 is controlled to be conducted, the exciting inductance of the transformer is clamped by the reflected voltage of the secondary side, and the energy storage of the transformer is released to the load end R0 of the secondary side.
After the excitation inductance of the transformer is consumed, the third switching element Q3 is turned on again, and at this time, the energy stored by the first capacitor C1 is transferred to the leakage inductance again through the resonance phenomenon of the first capacitor C1 and the leakage inductance, and then released to the secondary side. After the terminal voltage of the first capacitor C1 is zero, to indicate that the energy is released, the third switch Q3 and the second switch Q2 are turned off again, the first switch Q1 is turned on to continue energy storage, and the above process is repeated continuously.
According to the charging control circuit, the leakage inductance recovery circuit is used for storing energy of the leakage inductance of the transformer, and the leakage inductance energy can be transferred to the secondary side of the transformer to supply power for a load when the excitation inductance of the transformer is released, so that the leakage inductance energy is fully utilized. Moreover, unlike the snubber circuit in the related art, most of the leakage inductance energy of the transformer in the embodiments of the present disclosure can be transmitted to the secondary side without being consumed in a thermal resistance manner, the charging efficiency is improved, and the heat generation amount is reduced.
Fig. 3 shows a circuit configuration diagram of a charge control circuit in some embodiments of the present disclosure, and the charge control circuit of the present disclosure is described below with reference to fig. 3.
As shown in fig. 3, in some embodiments, in the charge control circuit of the present disclosure, a power supply circuit is connected to an external ac power source, the external ac power source is 220v 50hz mains, and the power supply circuit includes a rectifying circuit to rectify the ac power source into a dc power source.
In one example, the rectifying circuit includes a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4. One end of the external alternating current power supply is respectively connected with cathodes of the first diode D1 and the third diode D3, and the other end of the external alternating current power supply is respectively connected with anodes of the second diode D2 and the fourth diode D4. Referring to fig. 3, due to unidirectional conduction of the diodes, the alternating current can be converted into direct current by the rectifying circuit formed by the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4.
It should be noted that, since the voltage fluctuation is very large after the alternating current is converted into the direct current, in order to mitigate the voltage waveform, in the embodiment of the present disclosure, the power supply circuit further includes a voltage stabilizing circuit.
For example, as shown in fig. 3, the voltage stabilizing circuit includes a second capacitor C2, where the second capacitor C2 is connected in parallel with the rectifying circuit, that is, one end of the second capacitor C2 is connected to the anodes of the first diode D1 and the third diode D3, and the other end is connected to the cathodes of the second diode D2 and the fourth diode D4. The second capacitor C2 may perform a filtering function, so as to stabilize the dc power supply. In some embodiments, the second capacitor C2 may be an electrolytic capacitor, so as to have a larger capacity and improve the voltage stabilizing effect.
In the embodiment of the disclosure, one end of a primary winding of the transformer is connected with anodes of a first diode D1 and a third diode D3, the other end of the primary winding is connected with a first switching element Q1, and the other end of the first switching element Q1 is connected with cathodes of a second diode D2 and a fourth diode D4.
Meanwhile, one end of a first capacitor C1 of the leakage inductance recycling circuit is connected with anodes of a first diode D1 and a third diode D3, the other end of the first capacitor C is connected with a third switch piece Q3, and the other end of the third switch piece Q3 is connected with a primary winding.
The primary winding and the secondary winding are mutually coupled through a magnetic core, one end of the secondary winding is connected with a capacitor C0 and a load R0, the other end of the secondary winding is connected with a second switch piece Q2, and the other end of the second switch piece Q2 is connected with the capacitor C0 and the load R0 to form a charging loop.
In this disclosure example, the first switching element Q1, the second switching element Q2, and the third switching element Q3 all adopt MOS (Metal-Oxide-Semiconductor Field-Effect Transistor, metal-Oxide-semiconductor field effect transistor) transistors, and the MOS transistor is a controlled-switching transistor, and for the structure and the working principle of the MOS transistor, those skilled in the art will certainly understand that this disclosure will not be repeated.
It should be noted that, in the related art, the switch of the flyback converter circuit is generally turned on and off by using a schottky diode, and because the conduction voltage drop of the MOS transistor is about 0.1V and the conduction voltage drop of the diode is about 0.6V, in the embodiment of the present disclosure, the voltage drop of the switch element is greatly reduced by using the MOS transistor, so that the energy loss is reduced, and the charging efficiency of the circuit is further improved.
In the embodiment of the disclosure, the external alternating current is rectified into direct current through a rectifying circuit, then stabilized by a voltage stabilizing circuit and reaches the primary side of the transformer, at this time, the first switching element Q1 is conducted, the second switching element and the third switching element Q3 are disconnected, and the primary side winding of the transformer stores energy. At the end of energy storage of the transformer, the first switch piece Q1 and the second switch piece Q2 are controlled to be disconnected, the third switch piece Q3 is controlled to be conducted, and at the moment, leakage inductance of the transformer and the first capacitor C1 form an LC oscillating circuit, namely, the leakage inductance and the first capacitor C1 generate resonance, so that the energy of the leakage inductance can be transferred to the first capacitor C1 for storage. And then the first switching element Q1 and the third switching element Q3 are controlled to be disconnected, the second switching element Q2 is controlled to be conducted, the exciting inductance of the transformer is clamped by the reflected voltage of the secondary side, and the energy storage of the transformer is released to the load end R0 of the secondary side. After the excitation inductance of the transformer is consumed, the third switching element Q3 is turned on again, and at this time, the energy stored by the first capacitor C1 is transferred to the leakage inductance again through the resonance phenomenon of the first capacitor C1 and the leakage inductance, and then released to the secondary side. After the terminal voltage of the first capacitor C1 is zero, to indicate that the energy is released, the third switch Q3 and the second switch Q2 are turned off again, the first switch Q1 is turned on to continue energy storage, and the above process is repeated continuously.
According to the charging control circuit, the leakage inductance recovery circuit is used for storing energy of the leakage inductance of the transformer, and the leakage inductance energy can be transferred to the secondary side of the transformer to supply power for a load when the excitation inductance of the transformer is released, so that the leakage inductance energy is fully utilized. Moreover, unlike the snubber circuit in the related art, most of the leakage inductance energy of the transformer in the embodiments of the present disclosure can be transmitted to the secondary side without being consumed in a thermal resistance manner, the charging efficiency is improved, and the heat generation amount is reduced.
It should be noted that, nowadays, the charger of the electronic product is continuously pursued with high power and small volume, so that the working frequency of the charging circuit is continuously increased, and the problem of electromagnetic interference generated by the charging circuit is increasingly prominent. The problem of electromagnetic interference (EMI, electromagnetic Interference) affects not only the normal operation of other electronic devices but also the health of the human body, and therefore how to improve the problem of EMI is one of the important research directions of the charging technology.
For the charge control circuit of the embodiment of the disclosure, the on and off speeds of the MOS tube are very fast, and the voltage change (dv/dt) in unit time is relatively large, which can cause parasitic capacitance between the excitation transformer windings and between the switching tube and the radiating fin, so that common mode interference is generated, and the common mode interference is electromagnetic interference.
Thus, as shown in fig. 3, in the example of the present disclosure, a third capacitor C3 is connected in parallel to the first switching element Q1, and a fourth capacitor C4 is connected in parallel to the second switching element Q2. Taking the first switch piece Q1 as an example, the third capacitor C3 can be charged when the second switch piece Q2 is turned off, so as to reduce the turn-off speed of the second switch piece Q2, and meanwhile, the energy of the third capacitor C3 can be released through the on-off of the third switch piece Q3, so that the terminal voltage of the first switch piece Q1 before being turned on becomes zero, thereby reducing the voltage variation in unit time and further reducing the common mode interference.
In this disclosure example, the second switching element Q2 is connected in parallel with the fourth capacitor C4 and the resistor R1, so that the turn-off speed of the second switching element Q2 can be reduced, thereby reducing the working interference and effectively alleviating the EMI problem.
With continued reference to fig. 3, in the embodiment of the disclosure, the charging control circuit further includes a fifth capacitor C5, where one end of the fifth capacitor C5 is connected to the first switching element Q2, and the other end is connected to the magnetic core of the transformer. The fifth capacitor C5 can play a role in adjustment, and the common-mode voltage of the transformer can be reduced by adjusting the capacitance value of the fifth capacitor C5, so that common-mode interference is reduced, and the EMI problem is further optimized.
As can be seen from the above, in the embodiments of the present disclosure, the first switching element and the second switching element are connected in parallel to each other to reduce the turn-off speed of the switching elements, thereby reducing the common mode interference. And the common mode interference of the transformer is further reduced by adjusting the capacitor, so that the EMI problem of the charging circuit is effectively relieved.
As shown in fig. 3, the charge control circuit of the example of the present disclosure further includes a controller and a sampling circuit, where an input end of the sampling circuit is connected to the load end R0 and an output end of the sampling circuit is connected to the controller, so that the sampling circuit samples the output voltage, converts an analog signal obtained by the sampling into a digital signal, and then feeds back the digital signal to the controller. Meanwhile, the primary side of the transformer is provided with a sampling resistor R2, and the sampling end of the controller is connected with the sampling resistor R2, so that the current of the primary side can be sampled. The control ends of the controller are respectively connected with the control ends of the first switch piece Q1, the second switch piece Q2 and the third switch piece Q3, so that the controller can control the on-off of the first switch piece Q1, the second switch piece Q2 and the third switch piece Q3 according to the primary side current parameter and the charging parameter fed back by the sampling circuit, and the working process of the charging control circuit is realized.
As can be seen from the above, in the embodiment of the present disclosure, the leakage inductance recovery circuit is utilized to fully utilize the leakage inductance energy of the transformer, thereby improving the charging efficiency and reducing the heat productivity. And the first switch piece and the second switch piece are connected in parallel with a capacitor, so that the turn-off speed of the switch piece is reduced, and the common mode interference is reduced. Common mode interference of the transformer is further reduced by adjusting the capacitor, and the EMI problem of the charging circuit is effectively relieved.
In a second aspect, embodiments of the present disclosure provide a power adapter including the charge control circuit of any of the embodiments described above.
In the disclosed embodiments, the power adapter may be an adapter, such as a charging plug, for charging an electronic device.
As can be seen from the above, in the embodiment of the present disclosure, the leakage inductance recovery circuit is utilized to fully utilize the leakage inductance energy of the transformer, thereby improving the charging efficiency and reducing the heat productivity. And the first switch piece and the second switch piece are connected in parallel with a capacitor, so that the turn-off speed of the switch piece is reduced, and the common mode interference is reduced. Common mode interference of the transformer is further reduced by adjusting the capacitor, and the EMI problem of the charging circuit is effectively relieved.
In a third aspect, embodiments of the present disclosure provide an electronic product including an electronic device and the power adapter of any of the embodiments described above, the power adapter being connectable to an external power source to charge the electronic device.
Fig. 4 shows a block diagram of the electronic device in some embodiments of the present disclosure, and the related structure of the electronic device in some embodiments of the present disclosure is described below with reference to fig. 4.
Referring to fig. 4, the electronic device 1800 may include one or more of the following components: a processing component 1802, a memory 1804, a power component 1806, a multimedia component 1808, an audio component 1810, an input/output (I/O) interface 1812, a sensor component 1816, and a communication component 1818.
The processing component 1802 generally controls overall operation of the electronic device 1800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions. Further, the processing component 1802 may include one or more modules that facilitate interactions between the processing component 1802 and other components. For example, the processing component 1802 may include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802. As another example, the processing component 1802 may read executable instructions from a memory to implement electronic device-related functions.
The memory 1804 is configured to store various types of data to support operations at the electronic device 1800. Examples of such data include instructions for any application or method operating on the electronic device 1800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power supply assembly 1806 provides power to the various components of the electronic device 1800. The power components 1806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1800.
The multimedia component 1808 includes a display screen between the electronic device 1800 and the user that provides an output interface. In some embodiments, the multimedia component 1808 includes a front-facing camera and/or a rear-facing camera. When the electronic device 1800 is in an operational mode, such as a shooting mode or a video mode, the front-facing camera and/or the rear-facing camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 1810 is configured to output and/or input audio signals. For example, the audio component 1810 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 1800 is in operating modes, such as a call mode, a recording mode, and a speech recognition mode. The received audio signals may be further stored in the memory 1804 or transmitted via the communication component 1818. In some embodiments, audio component 1810 also includes a speaker for outputting audio signals.
The I/O interface 1812 provides an interface between the processing component 1802 and a peripheral interface module, which may be a keyboard, click wheel, button, or the like. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 1816 includes one or more sensors for providing status assessment of various aspects of the electronic device 1800. For example, the sensor assembly 1816 may detect the on/off state of the electronic device 1800, the relative positioning of the components, such as the display and keypad of the electronic device 1800, the sensor assembly 1816 may also detect the change in position of the electronic device 1800 or a component of the electronic device 1800, the presence or absence of a user's contact with the electronic device 1800, the orientation or acceleration/deceleration of the electronic device 1800, and the change in temperature of the electronic device 1800. The sensor assembly 1816 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 1816 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1816 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 1818 is configured to facilitate communication between the electronic device 1800 and other devices, either wired or wireless. The electronic device 1800 may access a wireless network based on a communication standard, such as Wi-Fi,2G,3G,4G,5G, or 6G, or a combination thereof. In one exemplary embodiment, the communication component 1818 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 1818 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the electronic device 1800 can be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements.
It should be apparent that the above embodiments are merely examples for clarity of illustration and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the present disclosure.
Claims (11)
1. A charge control circuit, characterized by comprising:
A power supply circuit for connecting an external power supply;
The transformer comprises a primary winding and a secondary winding which are mutually coupled, the primary winding is connected with the power circuit through a first switch piece, and the first switch piece is used for controlling the on-off of the primary winding and the power circuit; the secondary winding is connected with a load end through a second switch piece, and the second switch piece is used for controlling the on-off of the secondary winding and the load end;
The leakage inductance recovery circuit comprises a first capacitor and a third switch piece, wherein the first capacitor is connected with the primary winding of the transformer in parallel and is used for storing leakage inductance energy of the transformer, and the third switch piece is used for controlling on-off of the first capacitor and the primary winding.
2. The charge control circuit of claim 1 wherein the charge control circuit comprises a charge control circuit,
The power supply circuit comprises a rectifying circuit, and the rectifying circuit is connected with an external alternating current power supply and is used for converting the external alternating current power supply into a direct current power supply.
3. The charge control circuit of claim 2 wherein the charge control circuit comprises a charge control circuit,
The rectification circuit comprises a first diode, a second diode, a third diode and a fourth diode, wherein one end of an external alternating current power supply is respectively connected with cathodes of the first diode and the third diode, and the other end of the external alternating current power supply is respectively connected with anodes of the second diode and the fourth diode.
4. The charge control circuit of claim 2 wherein the charge control circuit comprises a charge control circuit,
The power supply circuit further comprises a voltage stabilizing circuit, wherein the voltage stabilizing circuit comprises a second capacitor, and the second capacitor is connected with the rectifying circuit in parallel.
5. The charge control circuit of claim 1 wherein the charge control circuit comprises a charge control circuit,
The switch further comprises a third capacitor, wherein the third capacitor is connected with the first switch piece in parallel and is used for controlling the turn-off speed of the first switch piece.
6. The charge control circuit of claim 1 wherein the charge control circuit comprises a charge control circuit,
The switch further comprises a fourth capacitor, wherein the fourth capacitor is connected with the second switch piece in parallel and is used for controlling the turn-off speed of the second switch piece.
7. The charge control circuit of claim 1 wherein the charge control circuit comprises a charge control circuit,
The transformer also comprises a fifth capacitor, one end of the fifth capacitor is connected with the primary winding, and the other end of the fifth capacitor is connected with the magnetic core of the transformer.
8. The charge control circuit of claim 1 wherein the charge control circuit comprises a charge control circuit,
The controller is characterized by further comprising a controller, wherein the output end of the controller circuit is respectively connected with the first switch piece, the second switch piece and the third switch piece and used for controlling the on-off of the first switch piece, the second switch piece and the third switch piece.
9. The charge control circuit of claim 8 wherein the charge control circuit comprises a charge control circuit,
The sampling circuit is further included, the input end is connected with the load end, the output end is connected with the controller and used for sampling to obtain charging parameters, and the controller is enabled to control the on-off of the first switch piece, the second switch piece and the third switch piece according to the charging parameters.
10. A power adapter comprising a charge control circuit according to any one of claims 1 to 9.
11. An electronic product, comprising:
An electronic device; and
The power adapter of claim 10, the power adapter charging the electronic device by connection to an external power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211431041.7A CN118054532A (en) | 2022-11-15 | 2022-11-15 | Charging control circuit, power adapter and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211431041.7A CN118054532A (en) | 2022-11-15 | 2022-11-15 | Charging control circuit, power adapter and electronic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118054532A true CN118054532A (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211431041.7A Pending CN118054532A (en) | 2022-11-15 | 2022-11-15 | Charging control circuit, power adapter and electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118054532A (en) |
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2022
- 2022-11-15 CN CN202211431041.7A patent/CN118054532A/en active Pending
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