CN111371156B - Charging circuit, charging control method and device, electronic device, and storage medium - Google Patents

Charging circuit, charging control method and device, electronic device, and storage medium Download PDF

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CN111371156B
CN111371156B CN202010459060.5A CN202010459060A CN111371156B CN 111371156 B CN111371156 B CN 111371156B CN 202010459060 A CN202010459060 A CN 202010459060A CN 111371156 B CN111371156 B CN 111371156B
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charging
switching device
charging circuit
switching
filter capacitor
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CN111371156A (en
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高思佳
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The disclosure relates to a charging circuit, a charging control method and device, an electronic device and a storage medium. The charging circuit comprises a plurality of switching devices, a plurality of flying capacitors and a filter capacitor; each switching device in the plurality of switching devices is used for adjusting a charging framework according to a control signal, so that the plurality of flying capacitors and the filter capacitor are charged in series in the first half period of each charging period and discharged in parallel in the second half period of each charging period, and the charging circuit is used for adjusting the charging framework according to the control signal, so that the ratio N of the input voltage to the output voltage of the charging framework is greater than or equal to 3, wherein N is a natural number. In this embodiment, the effect of improving the charging power can be achieved by improving the charging voltage under the condition of keeping the charging current unchanged, and the charging efficiency is favorably improved.

Description

Charging circuit, charging control method and device, electronic device, and storage medium
Technical Field
The present disclosure relates to the field of charging technologies, and in particular, to a charging circuit, a charging control method and apparatus, an electronic device, and a storage medium.
Background
At present, the following charging circuits are adopted in some existing electronic devices, as shown in fig. 1, including a flying capacitor CF and switching devices Q1-Q4, and the high-efficiency charging is realized by adjusting the switching states of the switching devices Q1-Q4. With the requirement of fast charging for electronic devices, the input voltage of the scheme shown in fig. 1 is limited by the battery voltage, and therefore, in the related art, the charging current in the charging loop is increased to achieve the effect of increasing the charging power.
However, when the current of the charging loop is increased, the loss in the charging loop is increased by a square multiple, which reduces the charging efficiency and the usage experience.
Disclosure of Invention
The present disclosure provides a charging circuit, a charging control method and apparatus, an electronic device, and a storage medium, to solve the deficiencies of the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided a charging circuit, including: the device comprises a plurality of switching devices, a plurality of flying capacitors and a filter capacitor; each switching device in the plurality of switching devices is used for adjusting a charging framework according to a control signal, so that the plurality of flying capacitors and the filter capacitor are charged in series in the first half period of each charging period and discharged in parallel in the second half period of each charging period, and the ratio N of the input voltage to the output voltage of the charging circuit is a natural number which is greater than or equal to 3.
Optionally, the number of the plurality of flying capacitances is positively correlated with the ratio.
Optionally, when the value of N is 3, the charging circuit includes 7 switching devices, 2 flying capacitors, and a filter capacitor; wherein the content of the first and second substances,
the first end of the first switching device is connected with an input power supply, and the second end of the first switching device is respectively connected with the first end of the second switching device and the first pole of the first flying capacitor;
the second end of the second switching device is respectively connected with the first end of the third switching device, the first end of the fourth switching device and the first pole of the filter capacitor; the second pole of the filter capacitor is grounded;
the second end of the third switching device is respectively connected with the first end of the seventh switching device and the second pole of the second flying capacitor;
a second end of the fourth switching device is connected with a first end of a fifth switching device and a first pole of the second flying capacitor respectively;
a second end of the fifth switching device is connected with a first end of a sixth switching device and a second pole of the first flying capacitor respectively;
a second terminal of the sixth switching device and a second terminal of the seventh switching device are grounded.
Optionally, a controller is also included;
the controller is connected with the control ends of the plurality of switching devices and used for sending control signals to the switching devices so that the switching devices can adjust the switching state.
Optionally, the controller comprises one of: the controller that sets up alone, the treater of the electronic equipment that charging circuit is located, the power management chip of electronic equipment.
According to a second aspect of the embodiments of the present disclosure, there is provided a charging control method applied to the charging circuit of the first aspect, the method including:
transmitting a first control signal to the charging circuit in a first half period of each charging cycle to charge the plurality of flying capacitors and the filter capacitor in series;
sending a second control signal to the charging circuit in the second half period of each charging period so as to charge the plurality of flying capacitors and the filter capacitors in parallel;
the ratio N of the input voltage to the output voltage of the charging circuit is a natural number which is greater than or equal to 3.
According to a third aspect of the embodiments of the present disclosure, there is provided a charge control device including: the charging circuit according to the first aspect, wherein the apparatus comprises:
the first control module is used for sending a first control signal to the charging circuit in the first half period of each charging period so as to enable the plurality of flying capacitors and the filter capacitor to be charged in series;
the second control module is used for sending a second control signal to the charging circuit in the latter half period of each charging period so as to enable the plurality of flying capacitors and the filter capacitors to be charged in parallel;
the ratio N of the input voltage to the output voltage of the charging circuit is a natural number which is greater than or equal to 3.
According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
the charging circuit of the first aspect;
a processor;
a memory for storing a computer program executable by the processor;
the processor is configured to execute the computer program in the memory to implement the steps of the method described above.
According to a fifth aspect of embodiments of the present disclosure, there is provided a readable storage medium having stored thereon an executable computer program which, when executed, performs the steps of the method described above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
as can be seen from the above embodiments, in the embodiments of the present disclosure, a plurality of switching devices, a plurality of flying capacitors, and a plurality of filter capacitors; each switching device in the plurality of switching devices is used for adjusting a charging framework according to a control signal, so that the plurality of flying capacitors and the filter capacitor are charged in series in the first half period of each charging period and discharged in parallel in the second half period of each charging period, the ratio N of the input voltage to the output voltage of the charging circuit is a natural number which is greater than or equal to 3, and the effect of improving the input voltage is achieved. Like this, can reach the effect that improves charging power through improving charging voltage under the unchangeable circumstances of holding charging current in this embodiment, be favorable to promoting charge efficiency.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a circuit diagram of a charging circuit in the related art.
Fig. 2a is a circuit schematic diagram of an N =3 charging circuit shown in accordance with an example embodiment.
Fig. 2b is an equivalent circuit diagram of the charging circuit shown in fig. 2a during charging in the previous half cycle.
Fig. 2c is an equivalent circuit diagram of the charging circuit shown in fig. 2a when discharging in the latter half cycle.
Fig. 3a is a circuit schematic of an N =4 charging circuit shown in accordance with an example embodiment.
Fig. 3b is an equivalent circuit diagram of the charging circuit shown in fig. 3a during charging in the previous half cycle.
Fig. 3c is an equivalent circuit diagram of the charging circuit shown in fig. 3a when discharging in the latter half cycle.
Fig. 4 is a flow chart illustrating a charge control method according to an exemplary embodiment.
Fig. 5 is a block diagram illustrating a charge control device according to an exemplary embodiment.
FIG. 6 is a block diagram illustrating an electronic device in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The following exemplary described embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure as recited in the claims below.
At present, the following charging circuits are adopted in some existing electronic devices, as shown in fig. 1, including a flying capacitor CF and switching devices Q1-Q4, and the high-efficiency charging is realized by adjusting the switching states of the switching devices Q1-Q4. With the requirement of fast charging for electronic devices, the input voltage of the scheme shown in fig. 1 is limited by the battery voltage, and therefore, in the related art, the charging current in the charging loop is increased to achieve the effect of increasing the charging power. However, when the current of the charging loop is increased, the loss in the charging loop is increased by a square multiple, which reduces the charging efficiency and the usage experience.
In order to solve the above technical problem, an embodiment of the present disclosure provides a charging circuit, and the inventive concept is to adjust a structure of the charging circuit, so that the charging circuit can adjust a charging architecture according to a control signal, and a ratio of an input voltage to an output voltage is N, where N is a natural number greater than or equal to 3. Therefore, under the condition that the charging current is not changed, the effect of improving the charging power is realized by improving the charging voltage, and the charging efficiency is improved.
In this embodiment, the charging circuit may include a plurality of switching devices, a plurality of flying capacitors, and a filter capacitor. Each switching device in the plurality of switching devices is used for adjusting the switching state of the switching device according to the control signal, so that the plurality of flying capacitors and the filter capacitor are charged in series in the first half period of each charging period and discharged in parallel in the second half period of each charging period.
In an embodiment, the charging device further comprises a controller, which may comprise one of: the controller that sets up alone, the treater of the electronic equipment that charging circuit is located, the power management chip of electronic equipment. The controller is connected with the control end of the switching device in the charging equipment and used for sending control signals to each switching device so that each switching device can adjust the switching state.
It should be noted that, in this embodiment, since the flying capacitor and the filter capacitor need to be connected in series to divide the voltage, the capacitance values thereof may be the same. And the number of the flying contents and the ratio N keep positive correlation, or the sum of the number of the flying capacitors and the number of the filter capacitors is equal to the ratio. A skilled person may adjust the above ratio and the number of the flying capacitors according to a specific scenario, for example, requirements of an electronic device where the charging circuit is located on the output voltage, limitations of the input voltage, and the like, and the corresponding solutions fall within the protection scope of the present disclosure. In one example, the number of the flying capacitors may be 2 and 3, and the operation of the charging circuit will be described by taking 2 flying capacitors as an example, and fig. 2a is a circuit diagram of a charging circuit according to an exemplary embodiment.
Referring to fig. 2a, the charging circuit includes: 7 switching devices Q1~Q72 flying over electricity CF1~CF2And a filter capacitor CO. The switching device is described by taking an N-channel field effect transistor as an example.
First switching device Q1Is connected to an input power source, and second terminals (sources) are respectively connected to the second switching device Q2First terminal and first flying capacitor CF1Is connected to the first pole (marked with a "+");
second switching device Q2Respectively with the third switching device Q3First terminal, fourth switching device Q4First terminal and filter capacitor COThe first pole of (a); the filter capacitor COThe second pole of (2) is grounded;
third switching device Q3Respectively with the seventh switching device Q7First terminal and second flying capacitor CF2Is connected to the second pole;
fourth switching device Q4Respectively with the fifth switching device Q5First terminal and second flying capacitor CF2The first pole of (a);
the fifth switching device Q5Respectively with a sixth switching device Q6And said first flying capacitor CF1Is connected to the second pole;
the sixth switching device Q6And said seventh switching device Q7The second terminal of (a) is grounded.
The operation of the charging circuit in each charging cycle is described in conjunction with the circuits shown in fig. 2a, 2b and 2c, including:
first half period
Controlling the first switching device Q1And a fifth switching device Q5And a third switching device Q3On and the other switching devices off, resulting in the charging architecture shown in fig. 2 b. Referring to fig. 2b, the charging circuit path is: power supply VINA first switching device Q1A first flying capacitor CF1And a fifth switching device Q5A second flying capacitor CF2And a third switching device Q3And a filter capacitor CO. I.e. the first flying capacitor CF1A second flying capacitor CF2And a filter capacitor COWhen the three capacitors are charged in series and have the same capacitance value, the partial pressure of each capacitor is 1/3VIN。
Thus, during the first half-cycle, the input voltage V of the charging circuitIN: output voltage VOUT=3：1。
Second half period
Controlling the second switching device Q2And a fourth switching device Q4And a sixth switching device Q6And a seventh switching device Q7On and the other switching devices off, resulting in the charging architecture shown in fig. 2 c. Referring to fig. 2c, the charging circuit path includes:
route 1: a filter capacitor to the battery;
route 2: seventh switching device Q7A second flying capacitor CF2And a fourth switching device Q4And a battery;
route 3: sixth switching device Q6A first flying capacitor CF1A second switching device Q2And a battery.
I.e. the first flying capacitor CF1A second flying capacitor CF2And a filter capacitor COThe parallel discharge is performed, and under the condition that the voltages of the three capacitors are the same, the charging current is 3 times of the current in each charging loop.
So far, the working process of the charging circuit with the input voltage and the output voltage being 3 times is completed.
In another embodiment of the present disclosure, a charging circuit with N =4 is provided, fig. 3a is a circuit diagram of the charging circuit, fig. 3b is a circuit diagram of a series charging of a flying capacitor and a filter capacitor in a first half period, and fig. 3c is a circuit diagram of a parallel discharging of the flying capacitor and the filter capacitor in a second half period. It can be understood that the working principle of the charging circuit is the same as the working process of the charging circuit with N =3 shown in fig. 2a to 2c, and specific reference may be made to the content of the embodiment shown in fig. 2a to 2c, which is not repeated herein.
In summary, in the embodiment of the disclosure, by controlling the charging structure of the charging circuit, the ratio of the input voltage to the output voltage of the charging circuit is greater than or equal to 3, so as to achieve the effect of increasing the input voltage. Like this, can reach the effect that improves charging power through improving charging voltage under the unchangeable circumstances of holding charging current in this embodiment, be favorable to promoting charge efficiency.
On the basis of the charging circuit, the embodiment of the present disclosure further provides a charging control method, and fig. 4 is a flowchart illustrating a charging control method according to an exemplary embodiment. Referring to fig. 4, a charging control method includes:
in step 41, a first control signal is sent to the charging circuit in the first half period of each charging cycle to charge the plurality of flying capacitors and the filter capacitor in series;
in step 42, a second control signal is sent to the charging circuit in the second half period of each charging period, so that the plurality of flying capacitors and the filter capacitors are charged in parallel;
the ratio N of the input voltage to the output voltage of the charging circuit is a natural number which is greater than or equal to 3.
It can be understood that the method provided by the embodiment of the present disclosure corresponds to the charging circuit embodiment of the above example, and specific contents may refer to the contents of each embodiment of the charging circuit, which are not described herein again.
On the basis of the above charging control method, an embodiment of the present disclosure further provides a charging control apparatus, with reference to fig. 5, including:
a first control module 51 for sending a first control signal to the charging circuit in a first half cycle of each charging cycle to charge the plurality of flying capacitors and the filter capacitor in series;
a second control module 52, configured to send a second control signal to the charging circuit in a second half cycle of each charging cycle, so that the plurality of flying capacitors and the filter capacitor are charged in parallel;
the ratio N of the input voltage to the output voltage of the charging circuit is a natural number which is greater than or equal to 3.
It can be understood that the apparatuses provided in the embodiments of the present disclosure correspond to the embodiments of the methods described above, and specific contents may refer to the contents of the embodiments of the methods, which are not described herein again.
FIG. 6 is a block diagram illustrating an electronic device in accordance with an example embodiment. For example, the electronic device 600 may be a smartphone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
Referring to fig. 6, electronic device 600 may include one or more of the following components: a processing component 602, a memory 604, a power component 606, a multimedia component 608, an audio component 610, an interface for input/output (I/O) 612, a sensor component 614, a communication component 616, and an image capture component 618.
The processing component 602 generally handles overall operation of the electronic device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more sets of processors 620 to execute computer programs. Further, the processing component 602 can include one or more sets of modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 can include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.
The memory 604 is configured to store various types of data to support operations at the electronic device 600. Examples of such data include computer programs for any application or method operating on the electronic device 600, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 604 may be implemented by any type or combination of volatile or non-volatile 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 disks.
Power supply component 606 provides power to the various components of electronic device 600. The power components 606 may include a power management system, one or more sets of power supplies, and other components associated with generating, managing, and distributing power for the electronic device 600. The power supply 606 may include a power chip, and the controller may communicate with the power chip to control the power chip to turn on or off the switching device, so that the battery supplies power or does not supply power to the motherboard circuit. In one example, the power component 606 includes the power modules shown in FIGS. 2-6.
The multimedia component 608 includes a screen that provides an output interface between the electronic device 600 and the target object. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a target object. The touch panel includes one or more sets of touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 600 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.
The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc.
The sensor component 614 includes one or more sets of sensors for providing various aspects of status assessment for the electronic device 600. For example, the sensor component 614 may detect an open/closed state of the electronic device 600, the relative positioning of components, such as a display and keypad of the electronic device 600, the sensor component 614 may also detect a change in the position of the electronic device 600 or a component, the presence or absence of a target object in contact with the electronic device 600, orientation or acceleration/deceleration of the electronic device 600, and a change in the temperature of the electronic device 600.
The communication component 616 is configured to facilitate communications between the electronic device 600 and other devices in a wired or wireless manner. The electronic device 600 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 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 600 may be implemented by one or more sets of Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components.
In an exemplary embodiment, a non-transitory readable storage medium is also provided, such as the memory 604 including instructions, that includes an executable computer program that is executable by the processor. The readable storage medium may be, among others, ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (7)

1. A charging circuit, comprising: the device comprises a plurality of switching devices, a plurality of flying capacitors and a filter capacitor; each switching device in the plurality of switching devices is used for adjusting a charging framework according to a control signal, so that the plurality of flying capacitors and the filter capacitor are charged in series in the first half period of each charging period and discharged in parallel in the second half period of each charging period, and the ratio N of the input voltage to the output voltage of the charging circuit is obtained;
when the value of N is 3, the charging circuit comprises 7 switching devices, 2 flying capacitors and a filter capacitor; wherein the content of the first and second substances,
the first end of the first switching device is connected with an input power supply, and the second end of the first switching device is respectively connected with the first end of the second switching device and the first pole of the first flying capacitor;
the second end of the second switching device is respectively connected with the first end of the third switching device, the first end of the fourth switching device and the first pole of the filter capacitor; the second pole of the filter capacitor is grounded;
the second end of the third switching device is respectively connected with the first end of the seventh switching device and the second pole of the second flying capacitor;
a second end of the fourth switching device is connected with a first end of a fifth switching device and a first pole of the second flying capacitor respectively;
a second end of the fifth switching device is connected with a first end of a sixth switching device and a second pole of the first flying capacitor respectively;
a second terminal of the sixth switching device and a second terminal of the seventh switching device are grounded.
2. The charging circuit of claim 1, further comprising a controller;
the controller is connected with the control ends of the plurality of switching devices and used for sending control signals to the switching devices so that the switching devices can adjust the switching state.
3. The charging circuit of claim 2, wherein the controller comprises one of: the controller that sets up alone, the treater of the electronic equipment that charging circuit is located, the power management chip of electronic equipment.
4. A charging control method applied to the charging circuit according to any one of claims 1 to 3, the method comprising:
transmitting a first control signal to the charging circuit to control the first, third and fifth switching devices Q during a first half of each charging cycle3Conducting and other switching devices are disconnected to make multiple flying chargesThe capacitor and the filter capacitor are charged in series;
sending a second control signal to the charging circuit in the latter half period of each charging period to control the second switching device, the fourth switching device, the sixth switching device and the seventh switching device to be switched on, and switching off other switching devices to enable the plurality of flying capacitors and the filter capacitor to be charged in parallel;
the ratio N of the input voltage to the output voltage of the charging circuit is equal to 3.
5. A charge control device, characterized by comprising: a charging circuit adapted for use in accordance with any one of claims 1 to 3, the apparatus comprising:
a first control module for sending a first control signal to the charging circuit to control the first, third and fifth switching devices Q during a first half period of each charging cycle3The other switching devices are switched on, so that the plurality of flying capacitors and the filter capacitor are charged in series;
the second control module is used for sending a second control signal to the charging circuit in the latter half period of each charging period so as to control the second switching device, the fourth switching device, the sixth switching device and the seventh switching device to be switched on, and other switching devices to be switched off, so that the plurality of flying capacitors and the filter capacitor are charged in parallel;
the ratio N of the input voltage to the output voltage of the charging circuit is equal to 3.
6. An electronic device, comprising:
a charging circuit as claimed in any one of claims 1 to 3;
a processor;
a memory for storing a computer program executable by the processor;
the processor is configured to execute the computer program in the memory to implement the steps of the method of claim 4.
7. A readable storage medium having stored thereon an executable computer program, characterized in that the computer program, when executed, performs the steps of the method of claim 4.
CN202010459060.5A 2020-05-27 2020-05-27 Charging circuit, charging control method and device, electronic device, and storage medium Active CN111371156B (en)

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CN1047944A (en) * 1990-05-26 1990-12-19 季长青 Switch capacitor isolated dc transducer
CN101465599A (en) * 2007-12-21 2009-06-24 立锜科技股份有限公司 Step-down circuit and method for charge pump
CN103825452A (en) * 2012-11-19 2014-05-28 财团法人工业技术研究院 Switching circuit
CN208143090U (en) * 2018-04-03 2018-11-23 深圳市爱协生科技有限公司 charge pump

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US10727738B2 (en) * 2015-04-22 2020-07-28 Sridhar V. Kotikalapoodi Method and apparatus for control of switch mode power supplies utilizing magnetic and capacitive conversion means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1047944A (en) * 1990-05-26 1990-12-19 季长青 Switch capacitor isolated dc transducer
CN101465599A (en) * 2007-12-21 2009-06-24 立锜科技股份有限公司 Step-down circuit and method for charge pump
CN103825452A (en) * 2012-11-19 2014-05-28 财团法人工业技术研究院 Switching circuit
CN208143090U (en) * 2018-04-03 2018-11-23 深圳市爱协生科技有限公司 charge pump

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