WO2020015274A1 - Methods for adjusting power supply output signal and power supply input signal, charger and terminal - Google Patents

Abstract

Provided by the present invention are methods for adjusting a power supply output signal and power supply input signal, a charger and a terminal. The method for adjusting a power supply output signal comprises: collecting a first ripple signal from within a first power supply output signal of an output power supply; performing a target operation on the first ripple signal to obtain a second ripple signal, the target operation comprising a phase-inversion operation; and superimposing the second ripple signal and the first power supply output signal to obtain a second power supply output signal, wherein the amplitude of a ripple signal in the second power supply output signal is smaller than the amplitude of the first ripple signal. Therefore, the present invention may solve the problem in the related technology wherein ripple jitter cannot be effectively suppressed, and achieves the effect of effectively suppressing ripple jitter.

Description

Power supply output signal, power supply input signal adjustment method, charger and terminal Technical field

The present invention relates to the field of communications, and in particular, to a method for adjusting a power output signal, a power input signal, a charger, and a terminal.

Background technique

In the communication field, fast charging has become a basic function for terminal products such as mobile phones. At present, pulse charging is an implementation method of a low voltage and high current fast charging method for mobile phones. However, this method will cause a large ripple in the change of the output voltage due to the switching effect caused by the pulse method at the charger end. Ripple is a phenomenon of voltage fluctuation. In the pulsed fast charging method, because the charging current is larger, the energy storage components experience high-speed and wide-range voltage changes, resulting in a large output voltage ripple of the charger.

Generally, the method of suppressing ripple is to place a filter capacitor at the output end of the power conversion circuit and a decoupling capacitor at the input end; or to use a magnetic bead that exhibits high impedance to a certain frequency signal to suppress the ripple; Or the input circuit and the output circuit of the filter circuit are isolated to avoid mixing the input noise ripple into the output terminal, which cannot effectively suppress the ripple jitter.

Aiming at the problem that the ripple jitter cannot be effectively suppressed in the prior art, no effective solution has been proposed in the related art.

Summary of the invention

Embodiments of the present invention provide a power supply output signal, a power supply input signal adjustment method, a charger, and a terminal, so as to at least solve the problem that the ripple jitter cannot be effectively suppressed in the related art.

According to an embodiment of the present invention, a method for adjusting a power output signal is provided, including: collecting a first ripple signal from a first power output signal of an output power; performing a target operation on the first ripple signal to obtain a first Two ripple signals, where the target operation includes an inversion operation; superimposing the second ripple signal with the first power output signal to obtain a second power output signal, wherein the amplitude of the ripple signal in the second power output signal is less than The amplitude of the first ripple signal.

According to yet another embodiment of the present invention, a charger is further provided, comprising: a ripple sampling circuit connected to the output power and configured to collect a first ripple signal from a first power output signal of the output power; A circuit connected to the ripple sampling circuit and configured to perform a target operation on the first ripple signal to obtain a second ripple signal, wherein the target operation includes an inverting operation; the power output circuit is connected to the inverting circuit and is set to The second ripple signal is superimposed on the first power output signal to obtain a second power output signal, wherein the amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal.

According to another embodiment of the present invention, there is also provided a storage medium, in which a computer program is stored, wherein the computer program is configured to execute the method described above when running.

According to the present invention, a first ripple signal is collected from a first power output signal of an output power source by using an inverted ripple signal method; a second ripple signal is obtained by inverting the first ripple signal; The second ripple signal is superimposed on the first power output signal to obtain a second power output signal, wherein the amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal. That is, the amplitude of the ripple signal in the output power can be reduced. Therefore, the problem that the ripple jitter in the related art cannot be effectively suppressed can be solved, and the effect of effectively suppressing the ripple jitter can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described here are used to provide a further understanding of the present invention and constitute a part of the present application. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. In the drawings:

1 is a flowchart of a method for adjusting a power output signal according to an embodiment of the present invention;

2 is a flowchart of a method for adjusting a power input signal according to an embodiment of the present invention;

3 is a structural diagram of a charger according to an embodiment of the present invention;

3a is a circuit structural diagram of a charger according to an embodiment of the present invention;

4 is a block diagram of a charging principle corresponding to the circuit schematic of FIG. 3;

5 is a flowchart of charging a terminal;

Figure 6 is a flowchart of the charger suppressing ripple;

Figure 7 is a ripple phase adjustment circuit diagram;

8 is a working flowchart of phase adjustment;

FIG. 9 is a schematic diagram of a ripple sampling and inverting amplifier circuit;

FIG. 10 is a schematic diagram of a ripple sampling and inverting amplifier circuit;

FIG. 11 is a schematic diagram of ripple suppression;

FIG. 12 is a preferred comparison circuit diagram;

FIG. 13 is a working flowchart of a comparison unit;

Figure 14 shows a power supply push-pull circuit diagram;

FIG. 15 is a schematic diagram of suppressing ripple jitter using only a power push-pull;

16 is a flowchart of a specific charging process of the terminal;

FIG. 17 is a schematic diagram of ripple ripple suppression using sampling alone;

FIG. 18 is a flowchart of ripple ripple suppression using sampling alone;

FIG. 19 is a schematic diagram of neither the charger nor the terminal using a power push-pull;

20 is a block diagram of a hardware structure of a method for adjusting a power output signal according to an embodiment of the present invention.

detailed description

Hereinafter, the present invention will be described in detail with reference to the drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

It should be noted that the terms “first” and “second” in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

In order to facilitate the understanding of the embodiments of the present invention, the elements introduced in the description of the embodiments of the present invention are first introduced here:

Ripple is a phenomenon of voltage fluctuation. The ripple on the charging path is mainly divided into three types: one is in the charger, the DC stabilized power supply is realized by the AC power through rectification, filtering and voltage stabilization. AC components Inevitable existence in the DC stabilized power supply; the other type is due to the working principle of the switching power supply, the output voltage jitter caused by the charging and discharging process of the energy storage components; the last type is due to the DC of the filter capacitor or decoupling capacitor Effective resistance, ripple caused by power supply jitter caused by high-speed charging and discharging.

Example 1

Generally, the method of suppressing ripple is to place a filter capacitor at the output end of the power conversion circuit and a decoupling capacitor at the input end; or use a magnetic bead that exhibits high impedance to a certain frequency signal to suppress ripple; or set a filter circuit at the output end. Or isolate the input and output ground loops of the filter circuit to avoid mixing input noise ripple into the output. The use of magnetic beads to suppress ripple can only work for the ripple of a certain frequency of the power supply. In fact, the ripple frequency range of the power supply spans from tens of Hz to hundreds of MHz. With such a wide range of ripple frequencies, currently no suitable magnetic bead can present a high impedance state in such a wide range. Therefore, the magnetic beads cannot completely suppress the ripple, and can only suppress the ripple of a certain frequency at the input end of some functional circuits. The filter circuit also only works on the ripple of a certain frequency range. When the ripple frequency range is unknown, it is difficult to design the filter range of the filter circuit. The lower the frequency of the ripple, the greater the capacitance requirement of the capacitor in the filter circuit. With the use of large-capacitance capacitors, the equivalent DC impedance of the capacitor itself will generate new ripple. For a DC power supply mixed with 50Hz power frequency AC ripple, it is difficult to remove it with a filter circuit, and there are no magnetic beads with such a low frequency. The loop ground of the filter circuit is isolated, but there is a certain isolation for the crosstalk of ground noise, and the suppression of the ripple is actually the filter circuit.

For different functional circuits, the ripple change in the output current is sampled to suppress the output current change, thereby preventing the power supply ripple caused by the current jitter. For example, for a patent of a backlight driver chip that suppresses current jitter, the change in output current is characterized by the change in the resistance of the load output terminal to ground. By sampling the voltage of the resistor to ground and comparing it with a standard voltage, the voltage difference is used to control the transistor device at the load end. When the voltage difference is large, the transistor is controlled to be turned on to reduce the output current; when the voltage difference is negative, the transistor is turned on to increase the output current. This ripple suppression method is still acceptable for small currents, but it is not suitable for application circuits with large output currents.

In addition, ripple is suppressed by comparing the output voltage with a reference voltage. When the output voltage exceeds the reference voltage due to ripple jitter, the ripple voltage is discharged to ground to prevent the voltage with ripple from being transmitted to the back-end circuit. This method is only effective when the output voltage exceeds the reference voltage due to ripple. Ripple voltage means not only exceeding the nominal low voltage, but also below the nominal voltage. This method cannot bleed the ripple below the nominal voltage. When the output voltage is discharged to the ground, a voltage ripple that causes the capacitor to experience a wide range is generated, which in turn generates a new ripple.

None of the above can effectively suppress the ripple. This embodiment collects the ripple voltage signal and inverts the collected ripple voltage signal. The inversion ripple and the original ripple are mixed and superimposed to reduce the jitter caused by the ripple. It even disappears, so as to achieve the effect of suppressing ripple. And the power supply push-pull design can be used at the output end of the charger and the input end of the terminal, which can prevent the power supply from shaking, as follows:

A method for adjusting a power output signal is provided in this embodiment. FIG. 1 is a flowchart of a method for adjusting a power output signal according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102: Collect a first ripple signal from a first power output signal of an output power;

Step S104: Perform a target operation on the first ripple signal to obtain a second ripple signal, where the target operation includes an inversion operation;

In step S106, a second power output signal is obtained by superposing the second ripple signal with the first power output signal, wherein the amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal.

Through the above steps, the first ripple signal is collected from the first power output signal of the output power source by using the inverse ripple signal method; the second ripple signal is obtained by inverting the first ripple signal; The second ripple signal is superimposed on the first power output signal to obtain a second power output signal, wherein the amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal. That is, the amplitude of the ripple signal in the output power can be reduced. Therefore, the problem that the ripple jitter in the related art cannot be effectively suppressed can be solved, and the effect of effectively suppressing the ripple jitter can be achieved.

Optionally, the execution subject of the above steps may be a charger or the like, but is not limited thereto.

In this embodiment, the scenario in which the above-mentioned method for adjusting a power output signal is applied is to charge a terminal (such as a mobile phone), that is, to apply it to a charger. This enables terminal devices such as mobile phones to have the best working performance during fast charging. The output power supply 301 in the above is the voltage and current output by the power supply circuit, and can represent the power supply circuit 301 in FIG. 3.

In an optional embodiment, before collecting the first ripple signal from the first power output signal of the output power source 301, receive a charging parameter, and the charging parameter includes the voltage and current required by the input terminal; And current as the voltage and current of the output power. In this embodiment, the charging parameters are established by the terminal (ie, the input terminal). The terminal needs to determine whether the terminal is compatible with the charger. If it is, the terminal first recognizes the charging protocol supported by the charger and uses a charging algorithm (including charging parameters) corresponding to the charging protocol according to the charging protocol of the charger. The terminal sets the current and voltage required for charging in the charging parameters and informs the charger. The charger outputs the output power corresponding to the current and voltage required by the terminal. After ripple processing, the terminal can implement a charging mode that matches its configuration, such as fast charging of a mobile phone. In addition, if the terminal is not compatible with the charger, the charger uses the default voltage output power, that is, the terminal is charged with a fixed power source, or a voltage common to the terminal, such as 5v. It can achieve different modes of charging the terminal according to different adaptation scenarios.

In an optional embodiment, after the output terminal receives the charging parameter, the voltage in the first reference power source is adjusted to the voltage in the charging parameter; the power output signal of the adjusted first reference power source 307 is output as the first The input power signal of the push-pull circuit 308 is used to instruct the first push-pull circuit 308 to adjust the voltage jitter of the power line 309 at the output end. In the present embodiment, the first reference power source 307 is a precise power source that pushes and pulls the circuit by default in the charger 30. When the voltage value of the output power source 301 at the input terminal changes, the transmission voltage of the power line 309 also changes. The power value of the first push-pull circuit 308, which is set to suppress the jitter of the power line 309, naturally needs to be changed. Applies to changes in the power supply of the power cord 309. Adjusting the output power of the first reference power source 307 according to the voltage value in the charging parameters can be used as the input power signal of the first push-pull circuit 308, so that the first push-pull circuit 308 can effectively suppress the voltage jitter of the power line at the output end . In addition, when the current is relatively small (for example, a current below 1.5A), the first push-pull circuit can be used to suppress the ripple jitter, that is, the amplitude of the ripple signal can be reduced without using the ripple sampling method.

In an optional embodiment, after the output terminal collects the first ripple signal from the first power output signal of the output power source, and inverts the first ripple signal to obtain the second ripple signal, the method includes: The first ripple signal is obtained by sampling the ripple signal in the first power output signal of the output power within the period, and the second ripple signal is obtained by inverting and amplifying the first ripple signal according to a preset ratio. In this embodiment, an inverse adjustment of the ripple signal can be regarded as a period. The second ripple signal obtained after inverting the first ripple signal is obtained by superimposing the second ripple signal. Although the amplitude of the ripple signal in the second power supply output signal is smaller than the amplitude of the first ripple signal, the ripple signal may not be completely reduced, that is, the second cycle is required to reduce the ripple in the second power output signal. The signal continues to cut. The output of the ripple inverting circuit is connected to the power path, and the second ripple signal is output together with the first output power, as shown in Figure 7 where the power output is connected. Describing from the direction of power transmission, the connection point of the output terminal of the ripple inversion circuit and the output circuit of the electric fish is located between the connection point of the ripple sampling and power push-pull unit. When the second ripple signal is connected to the power supply and output, the superposition is completed. The description of superposition is mainly to describe the ripple suppression process more vividly.

When the first ripple signal is inverted for the first time, it can be inverted with a 1: 1 ratio. The inverse ratio in subsequent cycles can be determined in the following way. After comparing the amplitude of the first ripple signal with the amplitude of the ripple signal in the second power supply output signal, the inverse ratio of the inverse first ripple signal is obtained. ; Collect the third ripple signal from the output signal of the second power source; invert the third ripple signal according to the inverse proportion of the first ripple signal to obtain the fourth ripple signal, and convert the fourth ripple signal Superimposed on the second power output signal to obtain a third power output signal, the amplitude of the ripple signal in the third power output signal is smaller than the amplitude of the ripple signal in the second power output signal. The ripple signal is continuously inverted, and the preferred implementation is that the ripple signal is zero. Can effectively suppress the jitter of the ripple signal.

In an optional embodiment, before collecting the first ripple signal from the first power output signal of the output power, the voltage and current of the output power are determined by using a preset voltage and a preset current. In this embodiment, if the terminal 31 is not compatible with the charger 30, it will use a preset voltage and a preset current as the voltage and current of the output power, or adjust the voltage and current of the output power to the preset voltage and The preset current is the voltage common to the terminal described above, such as a voltage of 5v. Subsequently, the ripple signal with an output voltage of 5v is inverted.

A method for adjusting a power input signal is also provided in this embodiment. FIG. 2 is a flowchart of a method for adjusting a power input signal according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

In step S202, a first power input signal is input, wherein the first power input signal comes from a second power output signal output from the output terminal; the second power output signal is determined in the following manner: the output terminal outputs the first power output signal from the output power 301 The second ripple signal is acquired by inverting the first ripple signal to obtain a second ripple signal, and superimposing the second ripple signal with the first power output signal to obtain a second power output signal.

In this embodiment, the amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal.

Through the above steps, the input terminal uses the second power output signal transmitted from the output terminal as the input first power input signal, and the second power output signal is a power source subjected to ripple processing. The output terminal collects a first ripple signal from a first power output signal of an output power source, obtains a second ripple signal by inverting the first ripple signal, and outputs the second ripple signal with the first power source. A second power output signal is obtained after the signals are superimposed, wherein the amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal. Therefore, the problem that the ripple jitter in the related art cannot be effectively suppressed can be solved, and the effect of effectively suppressing the ripple jitter can be achieved.

Optionally, the execution body of the above steps may be a terminal (for example, a mobile phone), but is not limited thereto.

In an optional embodiment, before the input signal of the first power source is input, in a case where it is determined to be compatible with the output terminal, a charging protocol of the output terminal is determined to determine a charging algorithm, wherein the charging The algorithm includes the charging parameters of the voltage and current required by the input terminal; sending the charging parameters to the output terminal to instruct the output terminal to use the voltage and current required by the input terminal as the voltage and Current.

In an optional embodiment, after the first power input signal is input, the method further includes: adjusting the voltage and current of the first power input signal to the voltage and current required by the input terminal, so as to Adapted to the input terminal. In this embodiment, the voltage and current of the first power supply input signal can be adjusted to be adapted to the battery 314 for charging.

In an optional embodiment, when the first power input signal is input, the method further includes: adjusting a voltage in the second reference power source 310 to a voltage in the charging parameter; and adjusting the adjusted The power output signal of the second reference power source 310 is output as an input power signal of the second push-pull circuit 311 to instruct the second push-pull circuit 311 to adjust the 309 voltage jitter of the power line of the input terminal. In this embodiment, the suppression of the voltage jitter of the power line 309 by the second push-pull circuit 311 can increase the stability when the terminal 31 is charged.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary universal hardware platform, and of course, also by hardware, but in many cases the former is Better implementation. Based on such an understanding, the technical solution of the present invention, in essence, or a part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, The optical disc) includes a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the above-mentioned methods in each embodiment of the present invention.

Example 2

A charger is also provided in this embodiment, and the device is configured to implement the foregoing embodiments and preferred implementation manners, and the descriptions will not be repeated. As used below, the term "module" may implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and conceived.

3 is a structural diagram of a charger according to an embodiment of the present invention. As shown in FIG. 3, the charger 30 includes: a power supply circuit 301 configured to output power; and a ripple sampling circuit 303 connected to the power supply circuit 301 and configured as A first ripple signal is collected from a first power output signal of the output power source; an inverting circuit 304 is connected to the ripple sampling circuit 303, and is configured to invert the first ripple signal to obtain a first ripple signal. Two ripple signals; a power output circuit 305 connected to the inverting circuit 304 and configured to superimpose the second ripple signal and the first power output signal to obtain a second power output signal, wherein the The amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal; the power line is connected to the power output circuit and is configured to output the second power output signal.

In an optional embodiment, the charger 30 further includes: a management circuit 302 connected to the power circuit 301 and connected to the sampling circuit 303 and configured to receive a charging parameter, wherein the charging parameter includes The voltage and current required by the terminal, and the voltage and current required by the terminal 31 are used as the voltage and current of the output power source. In this embodiment, the management circuit 302 controls other circuits in the charger, such as controlling the number of sampling times and the sampling period of the ripple sampling circuit 303.

In an optional embodiment, the management circuit 302 is further connected to the first push-pull circuit 308, and is configured to adjust the voltage in the first reference power source 307 to the voltage in the charging parameter; A power output signal output of a reference power source 307 is an input power signal of the first push-pull circuit 308; the first push-pull circuit 308 is configured to adjust the voltage jitter of the power line at the output end.

In an optional embodiment, the ripple sampling circuit 303 (corresponding to the above-mentioned sampling circuit 303) configured to collect the first ripple signal from the first power output signal of the output power includes: The first ripple signal is obtained after sampling the ripple signal in the first power output signal of the output power within a period; the inverting circuit 304 is configured to invert the first ripple signal to obtain the second ripple signal. The ripple signal includes: inverting and amplifying the first ripple signal according to a preset ratio to obtain a second ripple signal.

In an optional embodiment, the charger 30 further includes: a comparison circuit 306, connected to the ripple sampling circuit 303, and connected to the power output circuit 305, and configured to connect the amplitude of the first ripple signal with the amplitude of the first ripple signal. After comparing the amplitudes of the ripple signals in the second power output signal, an inverse proportion of the first ripple signal is obtained.

In an optional embodiment, the ripple sampling circuit 303 is further configured to collect a third ripple signal from the second power output signal; the inverting circuit 304 is further configured to invert the first ripple according to the first ripple. An inverse ratio of the wave signal is obtained by inverting the third ripple signal to obtain a third power output signal, wherein the amplitude of the ripple signal in the third power output signal is smaller than the amplitude of the third ripple signal. .

In an optional embodiment, the management circuit 302 is further configured to determine a voltage and a current of the output power by using a preset voltage and a preset current.

This embodiment further provides a terminal. As shown in FIG. 3, the terminal 31 includes a power line 309 configured to input a first power input signal, where the first power input signal is from a second power output from the charger 30. An output signal; the second power output signal is determined in the following manner: the charger 30 acquires a first ripple signal from a first power output signal of an output power, and obtains the first ripple signal by inverting the first ripple signal The second ripple signal is obtained by superimposing the second ripple signal and the first power output signal to obtain the second power output signal, wherein the amplitude of the ripple signal in the second power output signal is less than An amplitude of the first ripple signal.

The charging management circuit 312 is connected to the power line 309 and is configured to determine a charging protocol of the output terminal to determine a charging algorithm when determining that the terminal 31 is compatible with the charger 30, wherein the charging algorithm The charging parameters including the voltage and current required at the input terminal are included, and the charging parameters are sent to the charger to instruct the charger 30 to use the voltage and current required by the terminal 31 as the voltage and current of the output power source. Current.

The charging circuit 313 is connected to the power line 309 and is configured to adjust the voltage and current of the first power input signal to the voltage and current required by the battery 314 in the terminal 31 to be adapted to the battery 314 A battery connected to the charging circuit 313 and receiving a first power input signal adjusted by the charging circuit 313.

In this embodiment, the charging management circuit 312 is connected to the second push-pull circuit 311, and is further configured to adjust the voltage in the second reference power source 310 to the voltage in the charging parameter, and adjust the second The power output signal output of the reference power source 310 is an input power signal of the second push-pull circuit 311; the second push-pull circuit 311 is configured to adjust the voltage jitter of the power line 309.

A specific circuit diagram specifically corresponding to the charger in FIG. 3 is shown in FIG. 3 a, where S in FIG. 3 a represents a switch, which is controlled by a Master Controller Unit (MCU). R indicates resistance, L indicates inductance, and C indicates capacitance. The values of components with the same symbol may be different. The MCU corresponds to the management circuit 302 in FIG. 3; the connection relationship of each component in FIG. 3a corresponds to the charger shown in FIG. 3 one-to-one.

This embodiment also provides a charging device, which includes the charger 30 and the terminal 31 described above. The following describes the device in detail by using a scenario where the charger charges the terminal as an example:

In the process of charging the mobile phone, the method of suppressing the ripple of the small current is not suitable for the path of the large current; using the magnetic beads to suppress the ripple or the filter circuit to suppress the ripple have certain limitations. Especially in the pulse type fast charging method, the filter circuit causes a new ripple voltage due to the on-off change of the DC power supply.

In view of the above technical problems, the charging device in this embodiment collects the ripple voltage signal, inverts the collected ripple voltage signal, and amplifies it by a certain proportion. The reverse ripple and the original ripple are mixed and superimposed to make the ripple bring The jitter disappears, thereby achieving the effect of suppressing ripple. The power supply push-pull design is used at the output end of the charger and the input end of the terminal to prevent power supply jitter.

As shown in FIG. 3, the charger 30 and the terminal 31 are connected through a power line 309. After the ripple signal is suppressed in the charger 30, it is transmitted to the terminal 31 for charging. FIG. 4 is a preferred charging principle block diagram of the circuit schematic diagram corresponding to FIG. 3, and the charging process of the charging device will be described with reference to FIG. 4. Optionally, the charging device includes a charger 40 (corresponding to the function of the charger 30 in the above) and a terminal 41 (corresponding to the terminal 31 in the above). The charger 40 includes a charging and ripple suppression management unit 402 (corresponding to the management circuit 302), a ripple sampling unit 403 (corresponding to the ripple sampling circuit 303), an inverting amplifying unit 404 (corresponding to the inverting circuit 304), a power source Comparison unit 406 (corresponding to comparison circuit 306), ripple suppression power output unit 405 (corresponding to power output circuit 305), reference power supply 407 (corresponding to first reference power supply 307), and power supply push-pull unit 411 (corresponding to first Push-pull circuit 311). The charging and ripple suppression management unit 402 controls the power conversion circuit 401 and adjusts the reference power source 407 according to the charging parameters of the terminal 41; the ripple sampling unit 403 performs ripple sampling on the output power of the power conversion circuit 401, and the inverting amplification unit 404 Inverts the used ripple and adjusts according to the required ratio. The ripple suppression power output unit 405 uses the ripple signal to suppress the ripple of the output power after the adjustment. The power comparison unit 406 performs the power before and after the ripple suppression. Compare; the reference power supply 407 provides a high-precision power supply to the power supply push-pull unit 408 so that the power supply push-pull unit 408 suppresses power supply jitter.

Optionally, the terminal 41 includes a charging management unit 412 (corresponding to the management circuit 312), a reference power source 410 (corresponding to the second reference power source 310), a power push-pull unit 411 (corresponding to the second push-pull circuit 311), and charging conversion A portion of the circuit 413 (corresponding to the charging circuit 313). The charging management unit 412 establishes a corresponding charging algorithm according to the applicable terminal charging method; the reference power source 410 adjusts the reference power output value according to the power change in the charging process, and is set to the power push-pull unit 411 to suppress the jitter of the input terminal power; the charging conversion circuit 413 The input power is converted into a suitable battery 414 charging power according to the charging algorithm. Among them, the control of various circuits inside the terminal is generally controlled by the charging algorithm. The charging parameters are generally passed by the terminal's charging algorithm requiring the power provided by the charger. Parameter value. The system circuit 415 (corresponding to the system circuit 315 in FIG. 3) is provided to manage the circuit of the entire terminal 41.

The terminal charging management unit 412 establishes a corresponding charging algorithm according to the adapted charger 40. According to the charging algorithm, the output power requirement for the charger 40 is passed to the charging and ripple suppression management unit 402 of the charger 40. The charging and ripple suppression management unit 402 adjusts the output power of the power conversion circuit 401 according to the requirements of the charging algorithm. At the same time, the ripple signal sampled by the ripple sampling unit 403 is adjusted by the inverse amplification unit 404 for inverse proportion. The charging and ripple suppression management unit 402 mixes the adjusted ripple signal with the power output from the power conversion circuit 401 to suppress ripple jitter. At the same time, the output power of the reference power source 407 is adjusted according to the output power required by the charging algorithm. The reference power source 407 is set so that the push-pull circuit unit 408 prevents the voltage jitter on the output power line 409. The power comparison unit 406 detects the degree of change of the power supply before and after the ripple suppression, and the charging and ripple suppression management unit 402 can optionally adjust the inverse scaling ratio according to the effect of the ripple suppression.

Optionally, FIG. 5 is a flowchart of charging the terminal, as shown in FIG. 5, including the following steps:

S501: Charger plugged in, identifying charger;

S502: After the terminal detects that the charger is plugged in, the charging management unit initiates adaptation with the charger. If the adaptation is successful, go to S503, and if the adaptation is unsuccessful, go to S509;

S503: After identifying the charging protocol supported by the charger, the terminal uses the corresponding charging algorithm according to the charging protocol supported by the charger, and informs the charger of the voltage and current that it needs to output;

S504: According to the push-pull method of the input voltage of the power push-pull unit, adjust the power supply of the output voltage provided by the charger from the reference power supply to the push-pull circuit at this time. Until the end of charging, the charging management unit informs the charger to adjust the output power according to the charging process, and at the same time adjusts the reference power;

S505: Determine whether the charging is over. If the charging is not over, go to S502 and re-configure with the charger; if the charging is over, perform S506;

S506: The reference voltage output is disabled, and the power push-pull fails;

S507: After the charging is completed, notify the charger to restore the default state, and go to S508;

S509: If the terminal and the charger cannot be successfully adapted, the default charger outputs the default power, that is, outputs 5V;

S510: According to the 5V push-pull method of the power push-pull unit, adjust the reference power supply to supply 5V input voltage to the push-pull circuit, and go to S506;

S508: After the charging is completed, the reference power output is disabled, so that the power push-pull circuit fails.

Optionally, FIG. 6 is a working flowchart of the ripple suppression of the charger, as shown in FIG. 6, including the following steps:

S601: After the charger is inserted into the terminal, the terminal adapts the charger accordingly.

S602: During the adaptation process, the charging and ripple suppression management unit of the charger interacts with the charging management unit of the terminal, and informs the terminal of the charging protocol and power supported by the adapted charger. If the adaptation is successful, transfer to S603, otherwise go to S612.

S603: If the adaptation is successful, the charger and the terminal support the same charging protocol. After the adaptation, the charging and ripple suppression management unit first adjusts the phase of the ripple path so that the ripple signal is in the best matching state when it is in mixed output with the ripple of the power signal, as shown in Figure 7. It is a circuit diagram for ripple phase adjustment. When the ripple signal passes through capacitor C or inductor L, its phase will change accordingly. By default, the ripple inversion path is straight through, and the power path switch S2 is connected to the path configured with the inductor L. After completing the phase detection of this state, the phase detection of the next path is replaced; the power path is unchanged, and the ripple inversion path switch S1 hits the path configured with capacitor C, and after completing the phase detection of this state, the phase detection of the next path is replaced; the ripple reverse path is unchanged, and the power path switch S2 is hit to the through path to complete the phase detection of this state. In the corresponding channel combination, choose the best ripple suppression channel combination.

FIG. 8 is a working flowchart of phase adjustment, which specifically includes the following steps:

S801: After the adaptation process between the charger and the terminal is completed, the charger starts to adjust the phase, and the inverting amplifier works with the default amplification ratio or no amplification state;

S802: At this time, the charger works in the charging protocol mode according to the charging protocol successfully adapted to the terminal, but adjusts the phase with a low power output of 5V or 1A; observe which effect is better in a fixed adoption cycle That is, in the sampling period, after the power supply has undergone ripple suppression, the power supply after the suppression is less than the number of times before the suppression, and the extent of the suppression;

S803: The sampling times can be adjusted according to the performance and charging power of the charger, for example, it can be set to 5 times by default. Generally, the ripple inversion path and the power path are directly output together. After the phase detection of this state is completed, the phase detection of the next path combination is replaced;

S804: start sampling ripple sampling amplification function;

S805: power comparison result acquisition;

S806: It is judged whether the collection of the comparison result of the power supply is ended, if it is ended, go to S807, otherwise, the collection judgment is continued;

S807: Change the phase of the ripple suppression path and the phase of the power supply path, and then perform sampling;

S808: Compare the phase combination status of the ripple inversion path and the power supply path, and select the path combination with the best ripple suppression effect;

S809: After the phase adjustment is completed, the charger notifies the terminal that the optimal ripple suppression path is selected, and the terminal can charge according to the charging protocol.

During the entire charging process, the charging and ripple suppression management unit receives control information sent by the charging management unit of the terminal. The charging and ripple suppression management unit starts ripple sampling and inverse amplification at the same time when the power conversion circuit is started. Inverting amplification can be realized by an inverting amplifier. The initial inverting ratio defaults to a 1: 1 ratio, so as not to cause excessive amplification due to the ripple suppression function. In addition, because the sampled signal will be partially weakened, the corresponding proportional relationship can be adjusted according to the actual circuit. After the charging protocol supported by a general charger is fixed, the charging process is also fixed, and the form of the ripple is also fixed.

S604: According to the output power requirement of the terminal, control the power conversion circuit to output the corresponding power;

S605: Adjust the power corresponding to the reference power output, and the power push-pull circuit adjusts the power to the corresponding power;

S606: Adjust the proportionality coefficient, invert the sampled ripple and enlarge it;

S607: determine whether the ratio of inverse amplification is appropriate, if appropriate, go to S608; otherwise, go to S606;

S608: Determine whether the charging is completed. If the charging is completed, go to S609; otherwise, go to S604;

S609: Disconnect the ripple sampling and inverse amplification functions, and turn off the power;

S610: The power conversion circuit outputs the default power;

S611: End of charging;

S612: If the adaptation is unsuccessful, that is, the charger does not agree with the charging protocol supported by the terminal or the terminal does not support the charging protocol, then the charger outputs at the default voltage, that is, the 5V power output is used;

S613: Start the ripple sampling unit and perform phase adjustment, and go to S605.

Optionally, FIG. 9 shows an example of a ripple sampling and inverting amplifier circuit, where the amplification ratio is 1: 1, and the essence is to invert the collected ripple signal. During the design, the amplification ratio can be changed as required, and the ripple signal is inverted and amplified by the DC blocking capacitor C. Figure 10 shows a scheme of a ripple sampling and inverting amplifier circuit. This scheme compares the output voltage of the power conversion circuit with a preset voltage Vref to invert and amplify the deviation of the deviation from Vref. Vref is provided by the reference power supply. The ripple acquisition unit collects the ripple signal on the power supply, and after it is inverted and amplified, it will mix and output with the output power supply. Because the inverted ripple signal and the original ripple can be stabilized to the output voltage. In Figure 10, the positive VCC and negative VEE connected to the power supply are the positive and negative power supply of the inverting amplifier circuit, because the ripple voltage may be either higher than the preset output power or lower than the preset output voltage. The positive and negative power supplies are used to provide the inverting amplifier circuit. Figure 11 shows the principle of ripple suppression. After the inverted signal of the ripple and the ripple are mixed and output, the jitter caused by the ripple will be suppressed.

The power supply comparison unit in the charging device is set to compare the effects before and after the ripple suppression, and can be implemented by a simple comparison circuit. As shown in FIG. 12, it is a preferred comparison circuit diagram. Compare the magnification parameters. For example, if the voltage after ripple suppression is greater than the voltage before ripple suppression, then the amplification ratio should be reduced accordingly; if the voltage after suppression is less than the ripple voltage before suppression, then the ratio need not be adjusted.

Optionally, as shown in FIG. 13, it is a working flowchart of the comparison unit, including the following steps:

S1301: Power comparison start;

S1302: When the power comparison is started, the number of sampling and comparison times is set according to the corresponding algorithm;

S1303: The charging and ripple suppression management unit periodically closes the sampling switch, turns off the switch after the sampling time is reached, and then reads the comparison result.

S1304: Determine whether the number of comparisons has been reached. When the number of comparisons is reached, it is determined that the power before ripple suppression is greater than the number of power after ripple suppression within this range; the use of multiple times is to prevent a single comparison from causing inaccurate results and incorrect judgment. , Otherwise go to S1303;

S1305: Compare the sampling and comparison results to determine whether the magnification ratio needs to be adjusted;

S1306: After the ripple of the sampling signal is suppressed, the comparison ends.

In addition, the power supply push-pull function is to use the power supply to prevent the jitter caused by small currents and prevent the power line from transmitting large currents to achieve the effect of suppressing ripple. In the case of low current, the power supply push-pull function can be used to replace the ripple. Wave sampling scheme. When the voltage of the power line is lower than the preset voltage due to ripples, etc., the voltage in the power push-pull circuit is pulled down correspondingly, and the power push-pull circuit will quickly draw power from the reference power supply to prevent the voltage from being pulled down; When the voltage value on the power line is higher than the preset voltage, the push-pull circuit makes it difficult to compress the voltage difference due to its own characteristics, thereby preventing the voltage jitter on the power line. Figure 14 shows the push-pull circuit of the power supply. The power output from the reference power supply makes the voltage difference between the two capacitors the same, that is, the potential difference between the upper capacitor C is equal to the potential difference between the lower capacitor C, that is, the positive voltage of the upper capacitor is twice. Default output power. The capacitance value is small, and the DC equivalent resistance is also small. This push-pull circuit is based on the fact that the voltage across the capacitor cannot be abruptly changed, so when the voltage on the power line is caused by the voltage jitter caused by the ripple, it will affect the voltage on the upper capacitor C, so the upper capacitor C will affect the voltage on the power supply. Push-pull to prevent voltage jitter. The DC equivalent resistance of a small-capacitance capacitor is also small, and it does not cause ripple itself. The reference power is provided by high-precision power components. At the default 5V output, the reference power supply provides the voltage required by the power push-pull circuit. During the charging process, when the charger receives a terminal request to change the output power, the charger's charging and ripple suppression management unit will Adjust the voltage required for the corresponding push-pull circuit. After the charging is completed, the charging and ripple suppression management unit of the charger will turn off the output of the reference power supply, thereby also invalidating the function of the power push-pull circuit at the same time.

In summary, the above embodiment suppresses the output ripple of the charger power supply, so that the terminal can use components that work at a lower level, reducing the power consumption of the entire system. In addition, the power supply jitter impact caused by the pulse type fast charging method is prevented, which brings a more secure design to the protection circuit of the terminal.

In the above embodiments, the ripple sampling and power supply push-pull method are mainly used to suppress ripple jitter. In the case of a small amount of current, the following schemes can be used to suppress ripple jitter.

Optionally, as shown in FIG. 15, only the power supply push-pull is used to suppress the ripple jitter, and the hybrid output method by inverting and amplifying the sampling ripple is omitted. Ripple suppression mainly relies on the power supply push-pull function of the charger, and uses the charger charge management unit 1501 to manage the circuit. The charging process of the terminal is the same as that of other terminals. When it is compatible with the charger, if it cannot be adapted, the default charger outputs 5V power, and the terminal charges according to the default 5V input. After the adaptation is successful, the terminal performs charging control according to the adapted charging protocol and requires the charger to change the output power.

Optionally, the specific charging process of the terminal is shown in FIG. 16 and includes the following steps:

S1601: After a terminal such as a mobile phone is inserted into a charger, the terminal will adapt the charger accordingly;

S1602: During the adaptation process, the charging management unit of the charger interacts with the charging management unit of the terminal, and informs the terminal that the adapted charger supports the charging protocol and power. If the adaptation is successful, the charger and the terminal support the same For a charging protocol, go to S1603; otherwise, go to S1605;

S1603: Control the power conversion circuit according to the charging protocol;

S1604: Receive the output power requirements of the terminal, and control the power conversion circuit to output the corresponding power;

S1605: If the adaptation is unsuccessful, that is, the charger does not agree with the charging protocol supported by the terminal or the terminal does not support the charging protocol, then the charger outputs at the default voltage, that is, the 5V power output is used;

S1606: During the entire charging process, the charging management unit of the charger receives control information sent by the charging management unit of the terminal. At the default 5V output, the reference power supply provides the voltage required by the power push-pull circuit. During the charging process, when the charger receives the terminal request to change the output power, the charger's charge management unit will adjust the corresponding push-pull according to the output voltage. The voltage required by the circuit. After the charging is completed, the charging management unit of the charger will turn off the output of the reference power supply, thereby also invalidating the function of the power push-pull circuit at the same time;

S1607: determine whether the charging is completed, if it is completed, go to S1604, otherwise, go to S1608;

S1608: Turn off the reference power;

S1609: The power conversion circuit outputs the default power;

S1610: Charging is completed.

Optionally, the charger can also use the sampling method to complete the ripple jitter suppression. The power supply push-pull suppression of the power source ripple jitter depends on the terminal. The schematic diagram is shown in FIG. 17.

Optionally, the process is shown in Figure 18 and includes the following steps:

S1801: After the charger is inserted into the terminal, the terminal will adapt the charger accordingly. During the adaptation process, the charging and ripple suppression management unit of the charger interacts with the charging management unit of the terminal to inform the terminal of the charging protocol and power supported by the adapted charger;

S1802: Determine whether the adaptation is successful. If successful, that is, the charger and the terminal support the same charging protocol, go to S1803, otherwise, go to S1805;

S1803: Control the power conversion circuit according to the charging protocol, start the sampling unit, and perform phase adjustment;

S1804: According to the output power requirements of the terminal, control the power conversion circuit to output the corresponding power;

S1805: If the adaptation is unsuccessful, that is, the charger does not support the charging protocol supported by the terminal or the terminal does not support the charging protocol, then the charger outputs at the default voltage, that is, it uses a 5V power output;

S1806: Start the ripple sampling unit and adjust accordingly;

S1807: After completing the phase adjustment of the ripple inversion path and the power path, the charger tells the terminal to charge according to the charging protocol. During the entire charging process, the charging and ripple suppression management unit receives control information sent by the charging management unit of the terminal. During the entire charging process, the charging and ripple suppression management unit of the charger adjusts the inverse amplification ratio according to the comparison result of the power comparison unit. Generally, after the charging protocol supported by the charger is fixed, the ripple state generated by the charger is also fixed, and the proportion adjusted during the charging process is relatively small. When the charging is finished or the charger is unplugged, the charger returns to the default output, that is, it outputs 5V voltage;

S1808: Determine whether the magnification ratio is appropriate. If appropriate, go to S1809. If not, go to S1807.

S1809: determine whether the charging is completed, if it is completed, go to S1810; otherwise, go to S1804;

S1810: Disconnect the ripple sampling and inverse amplification functions;

S1811: The power conversion circuit outputs the default power;

S1812: Charging is completed.

Optionally, as shown in FIG. 19, neither the charger nor the terminal uses the power push-pull. The charger side performs ripple suppression with the output power after inverse amplification of the ripple sampling, transmits the output power after the ripple suppression to the terminal, and charges the terminal. The charging process of the terminal is the same as that of other chargers. When it is compatible with the charger, if it cannot be adapted, the default charger outputs 5V power, and the terminal charges according to the default 5V input. After the adaptation is successful, the terminal performs charging control according to the adapted charging protocol and requires the charger to change the output power. After the charger is inserted into the terminal, the terminal will adapt the charger accordingly. During the adaptation process, the charging and ripple suppression management unit of the charger interacts with the charging management unit of the terminal, and informs the terminal of the adapted charger to support the charging protocol and power. If the adaptation is unsuccessful, that is, the charger does not agree with the charging protocol supported by the terminal or the terminal does not support the charging protocol, then the charger outputs at the default voltage, that is, it uses a 5V power output. If the adaptation is successful, the charger and the terminal support the same charging protocol. After completing the phase adjustment of the ripple inversion path and power supply path, the charger tells the terminal to charge according to the charging protocol. During the entire charging process, the charging and ripple suppression management unit receives control information sent by the charging management unit of the terminal. During the entire charging process, the charging and ripple suppression management unit of the charger adjusts the inverse amplification ratio according to the comparison result of the power comparison unit. Generally, after the charging protocol supported by the charger is fixed, the ripple state generated by the charger is also fixed, and the proportion adjusted during the charging process is relatively small. When charging is complete or the charger is unplugged, the charger returns to its default output, which is 5V.

An embodiment of the present invention further provides a storage medium. The storage medium stores a computer program, and the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.

According to still another aspect of the embodiments of the present invention, an electronic device for implementing the above-mentioned method for adjusting a power output signal is also provided. As shown in FIG. 20, the electronic device includes a memory 2002 and a processor 2004. The memory A computer program is stored in 2002, and the processor 2002 is configured to execute the steps in any one of the foregoing method embodiments through the computer program.

Optionally, in this embodiment, the foregoing storage medium may be configured to store a computer program for performing the following steps.

S1. Collect a first ripple signal from a first power output signal of an output power;

S2. Perform a target operation on the first ripple signal to obtain a second ripple signal, where the target operation includes an inversion operation;

S3. A second power output signal is obtained by superposing the second ripple signal with the first power output signal, wherein the amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal.

Optionally, the storage medium is further configured to store a computer program for executing steps included in the method in the foregoing embodiment, which is not described in this embodiment.

Optionally, in this embodiment, a person of ordinary skill in the art may understand that all or part of the steps in the various methods of the foregoing embodiments may be performed by a program instructing related hardware of a terminal device, and the program may be stored in a Among the computer-readable storage media, the storage media may include: a flash disk, a read-only memory (ROM), a random access device (Random Access Memory, RAM), a magnetic disk, or an optical disk.

Optionally, in this embodiment, the foregoing electronic device may be located in at least one network device among a plurality of network devices in a computer network.

Optionally, in this embodiment, the foregoing processor may be configured to execute the following steps by a computer program:

S1. Collect a first ripple signal from a first power output signal of an output power;

S2. Perform a target operation on the first ripple signal to obtain a second ripple signal, where the target operation includes an inversion operation;

S3. A second power output signal is obtained by superposing the second ripple signal with the first power output signal. The amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal.

Optionally, a person of ordinary skill in the art can understand that the structure shown in FIG. 20 is only schematic, and the electronic device includes a charger element. It does not limit the structure of the electronic device. For example, the electronic device may further include more or fewer components (such as a network interface, etc.) than those shown in FIG. 20, or have a different configuration from that shown in FIG. 20.

The memory 2002 may specifically, but not limited to, be configured to store information such as sample characteristics of the item and target virtual resource account. As an example, as shown in FIG. 20, the above-mentioned memory 2002 may include, but is not limited to, the above-mentioned charger element 2008 and is configured to be connected to various circuit elements in the above-mentioned charger.

Optionally, the transmission device 2006 is configured to receive or transmit power via a power line.

Optionally, in this embodiment, the foregoing storage medium may include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (Random Access Memory, RAM), A variety of media that can store computer programs, such as mobile hard disks, magnetic disks, or optical disks.

An embodiment of the present invention further provides an electronic device including a memory and a processor. The memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any one of the foregoing method embodiments.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and optional implementation manners, and details are not described in this embodiment.

Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present invention can be implemented by a general-purpose computing device, and they can be concentrated on a single computing device or distributed on a network composed of multiple computing devices. Above, optionally, they may be implemented with program code executable by a computing device, so that they may be stored in a storage device and executed by the computing device, and in some cases, may be in a different order than here The steps shown or described are performed either by making them into individual integrated circuit modules or by making multiple modules or steps into a single integrated circuit module. As such, the invention is not limited to any particular combination of hardware and software.

The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, or improvement made within the principle of the present invention shall be included in the protection scope of the present invention.

Industrial applicability

As described above, a power supply output signal, a method for adjusting a power input signal, a charger, and a terminal provided by the embodiments of the present invention have the following beneficial effects: adopting a manner of inverting a ripple signal through a first power source outputting power A first ripple signal is collected in the output signal; a second ripple signal is obtained by inverting the first ripple signal; and a second power source output signal is obtained by superimposing the second ripple signal with the first power source output signal, where: The amplitude of the ripple signal in the second power output signal is smaller than the amplitude of the first ripple signal. That is, the amplitude of the ripple signal in the output power can be reduced. Therefore, the problem that the ripple jitter in the related art cannot be effectively suppressed can be solved, and the effect of effectively suppressing the ripple jitter can be achieved.

Claims (14)

1. A method for adjusting a power output signal includes:

   Collecting a first ripple signal from a first power output signal of an output power (301);

   Performing a target operation on the first ripple signal to obtain a second ripple signal, wherein the target operation includes an inversion operation;

   A second power output signal is obtained by superposing the second ripple signal with the first power output signal, wherein the amplitude of the ripple signal in the second power output signal is smaller than that of the first ripple signal. Amplitude.
2. The method according to claim 1, wherein before collecting the first ripple signal from a first power output signal of the output power (301), the method further comprises:

   Receiving a voltage and a current required by an input terminal, wherein the input terminal is configured to receive the second power output signal;

   The voltage and current of the output power source (301) are adjusted to the voltage and current required by the input terminal.
3. The method according to claim 2, wherein after receiving the voltage and current required by the input terminal, the method further comprises:

   Adjusting the voltage of the power supply output signal in the first reference power supply (307) to the voltage required by the input terminal, wherein the first reference power supply (307) is set as the input power signal of the first push-pull circuit (308) ;

   Outputting the adjusted power output signal of the first reference power source (307) as the input power signal of the first push-pull circuit (308) to instruct the first push-pull circuit (308) to adjust the power at the output end The voltage of line (309) is dithered, wherein the output terminal is used to output the second power output signal.
4. The method according to claim 1, wherein after collecting the first ripple signal from a first power supply output signal of the output power source (301), performing the target operation on the first ripple signal, Obtaining the second ripple signal includes:

   Sampling the ripple signal in the first power output signal of the output power within a preset period to obtain the first ripple signal;

   After the first ripple signal is inverted and amplified according to a preset ratio, the second ripple signal is obtained.
5. The method according to claim 1, wherein after superimposing the second ripple signal and the first power output signal to obtain a second power output signal, the method further comprises:

   Comparing the amplitude of the first ripple signal with the amplitude of the ripple signal in the second power output signal to obtain an inverse proportion of the first ripple signal;

   Collecting a third ripple signal from the second power output signal;

   Inverting the third ripple signal according to the inverse proportion to obtain a fourth ripple signal;

   Superimposing the fourth ripple signal with the second power output signal to obtain a third power output signal, wherein the amplitude of the ripple signal in the third power output signal is smaller than the second power output signal The amplitude of the ripple signal.
6. The method according to claim 1, wherein before collecting the first ripple signal from the first power output signal of the output power (301), the method further comprises:

   The voltage and current of the output power source (301) are adjusted to a preset voltage and a preset current.
7. A charger including:

   A ripple sampling circuit (303) connected to the output power source (301) and configured to collect a first ripple signal from a first power source output signal of the output power source (301);

   An inverting circuit (304) is connected to the ripple sampling circuit (303) and is configured to perform a target operation on the first ripple signal to obtain a second ripple signal, wherein the target operation includes an inverting operation ;

   A power output circuit (305) is connected to the inverting circuit (304) and is configured to obtain a second power output signal by superimposing the second ripple signal and the first power output signal, wherein the first The amplitude of the ripple signal in the output signals of the two power sources is smaller than the amplitude of the first ripple signal.
8. The charger according to claim 7, further comprising:

   The management circuit (302) is connected to the output power source (301), and is configured to receive the voltage and current required by the input terminal, and adjust the voltage and current of the output power source (301) to the voltage and current required by the input terminal. , Wherein the input terminal is configured to receive the second power output signal.
9. The charger according to claim 8, wherein:

   The management circuit (302) is connected to a first push-pull circuit (308) and is configured to adjust a voltage of a power output signal in a first reference power source (307) to a voltage required by the input terminal, wherein the first A reference power supply (307) is set to input a power signal for the first push-pull circuit (308);

   The management circuit (302) is further configured to output the adjusted power output signal of the first reference power source (307) as an input power signal of the first push-pull circuit (308) to indicate the first The push-pull circuit (308) adjusts the voltage jitter of the power line (309) at the output terminal, wherein the output terminal is configured to output the second power output signal.
10. The charger according to claim 7, wherein:

    The ripple sampling circuit (303) configured to collect a first ripple signal from a first power output signal of the output power (301) includes: outputting a first power to the output power within a preset period After the ripple signal in the signal is sampled, the first ripple signal is obtained;

    The inverting circuit (304) is configured to invert the first ripple signal to obtain a second ripple signal, and includes: inverting and amplifying the first ripple signal according to a preset ratio to obtain The second ripple signal.
11. The charger according to claim 7, further comprising:

    The comparison circuit (306) is connected to the ripple sampling circuit (303) and connected to the output power source (301), and is configured to add the amplitude of the first ripple signal to the output signal of the second power source. Comparing the amplitudes of the ripple signals to obtain an inverse proportion of the first ripple signal;

    The ripple sampling circuit (303) collects a third ripple signal from the second power output signal;

    The inverting circuit (304) inverts the third ripple signal according to the inverse proportion to obtain a fourth ripple signal;

    A power output circuit (305) superimposes the fourth ripple signal and the second power output signal to obtain a third power output signal, wherein the amplitude of the ripple signal in the third power output signal is less than The amplitude of the ripple signal in the second power output signal is described.
12. The charger according to claim 8, wherein:

    The management circuit (302) is further configured to adjust the voltage and current of the output power source (301) to a preset voltage and a preset current.
13. The charger according to claim 7, further comprising:

    A power line (309) is connected to the power output circuit (305) and is configured to output the second power output signal.
14. A storage medium, wherein a computer program is stored in the storage medium, and the computer program is configured to execute the method according to any one of claims 1 to 6 when running.

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