CN111371298A - Charging device, charging control method and apparatus, electronic device, and storage medium - Google Patents

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

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Publication number
CN111371298A
CN111371298A CN202010459058.8A CN202010459058A CN111371298A CN 111371298 A CN111371298 A CN 111371298A CN 202010459058 A CN202010459058 A CN 202010459058A CN 111371298 A CN111371298 A CN 111371298A
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Prior art keywords
switching device
charging
control circuit
switching
follow current
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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
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • 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
    • 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)
  • Dc-Dc Converters (AREA)

Abstract

The disclosure relates to a charging device, a charging control method and apparatus, an electronic device, and a storage medium. The battery module comprises a flying capacitor, a switch control circuit, a follow current inductor and a filter capacitor; the switch control circuit is respectively connected with the follow current inductor and the flying capacitor; the follow current inductor is connected with the filter capacitor; the switch control circuit is used for controlling the switch state of each switch device according to the control signal so as to enable each charging cycle to form a plurality of charging sub-stages, and the flying capacitor and the follow current inductor are respectively used as power supplies in each charging sub-stage. In this embodiment, by increasing the switching frequency of the entire charging device, the magnitude of the output ripple can be reduced, and accordingly, the withstand voltage requirement and size of the filter element can be reduced, which is beneficial to improving the charging efficiency and reliability.

Description

Charging device, charging control method and apparatus, electronic device, and storage medium
Technical Field
The present disclosure relates to the field of charging technologies, and in particular, to a charging device, a charging control method and apparatus, an electronic device, and a storage medium.
Background
At present, the charging power required by the electronic device is larger and larger, and the ripple output by the charging device is increased along with the increase of the charging power. In order to improve the above ripple, the following methods are generally adopted in the related art:
first, the filter element with a higher specification is selected, which results in an increase in the size and cost of the filter element, and the reliability of the circuit is not improved.
Second, the switching frequency of the switching tube is increased to improve the ripple magnitude, but the switching loss of the switching tube increases by a square multiple when the switching frequency becomes high, resulting in a decrease in the charging efficiency of the circuit.
Disclosure of Invention
The present disclosure provides a charging device, 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 embodiments of the present disclosure, there is provided a charging apparatus including: the device comprises a flying capacitor, a switch control circuit, a follow current inductor and a filter capacitor; the switch control circuit is respectively connected with the follow current inductor and the flying capacitor; the follow current inductor is connected with the filter capacitor;
the switch control circuit is used for controlling the switch state of each switch device according to the control signal so as to enable each charging cycle to form a plurality of charging sub-stages, and the flying capacitor and the follow current inductor are respectively used as power supplies in each charging sub-stage.
Optionally, the number of the flying capacitors is associated with an input voltage and an output voltage of the charging device, and the number of the plurality of charging sub-phases is associated with the number of the flying capacitors.
Optionally, the switch control circuit includes an even number of switching devices connected in series in sequence, where a first switching device is connected to an external power supply, a last switching device is grounded, and control terminals of all the switching devices are connected to the processor;
and a connection point is arranged between every two adjacent switching devices, and except that the middle connection point is connected to the follow current inductor, other connection points are respectively connected with one end of one of the flying capacitors.
Optionally, the switch control circuit comprises a first switch device, a second switch device, a third switch device, a fourth switch device, a fifth switch device and a sixth switch device; wherein,
the first end of the first switching device is connected with an external 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 end 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 and the first end of the second flying capacitor;
the second end of the third switching device is respectively connected with the first end of the fourth switching device and the first end of the follow current inductor;
a second end of the fourth switching device is connected with a first end of the fifth switching device and a second end of the second flying capacitor respectively;
a second end of the fifth switching device is connected with a first end of the sixth switching device and a second end of the first flying capacitor respectively;
a second terminal of the sixth switching device is grounded.
According to a second aspect of the embodiments of the present disclosure, there is provided a charge control method, the method including:
and controlling the switching state of each switching device in the switching control circuit to enable each charging period to form a plurality of charging sub-stages, wherein the flying capacitor and the follow current inductor are respectively used as power supplies in each charging sub-stage.
Optionally, the number of the plurality of charging sub-phases is associated with the number of the flying capacitors, which are associated with the input voltage and the output voltage of the charging device.
Optionally, controlling the switching states of the switching devices in the switching control circuit to form a plurality of charging sub-phases per charging cycle includes:
respectively controlling the first switching device, the third switching device and the fifth switching device in the switch control circuit to be conducted, so that an external power supply respectively supplies power to the first flying capacitor, the second flying capacitor, the follow current inductor and an external load;
respectively controlling a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit to be conducted, so that the follow current inductor serves as a power supply to supply power to the load;
respectively controlling a second switching device, a third switching device and a sixth switching device in the switch control circuit to be conducted, so that the first flying capacitor is used as a power supply to supply power to the follow current inductor and the load;
respectively controlling a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit to be conducted, so that the follow current inductor serves as a power supply to supply power to the load;
respectively controlling a second switching device, a fourth switching device and a sixth switching device in the switch control circuit to be conducted, so that the first flying capacitor and the second flying capacitor are used as power supplies to supply power to the follow current inductor and the load;
and respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor is used as a power supply to supply power to the load.
According to a third aspect of the embodiments of the present disclosure, there is provided a charge control device including:
and the switch state control module is used for controlling the switch state of each switch device in the switch control circuit so as to enable each charging cycle to form a plurality of charging sub-stages, and the flying capacitor and the follow current inductor are respectively used as power supplies in each charging sub-stage.
Optionally, the switch state control module includes:
the first control unit is used for respectively controlling the conduction of a first switching device, a third switching device and a fifth switching device in the switch control circuit, so that an external power supply respectively supplies power to the first flying capacitor, the second flying capacitor, the follow current inductor and an external load;
the second control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor serves as a power supply to supply power to the load;
the third control unit is used for respectively controlling the conduction of a second switching device, a third switching device and a sixth switching device in the switch control circuit, so that the first flying capacitor is used as a power supply to supply power to the follow current inductor and the load;
the fourth control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor serves as a power supply to supply power to the load;
the fifth control unit is used for respectively controlling the conduction of a second switching device, a fourth switching device and a sixth switching device in the switching control circuit, so that the first flying capacitor and the second flying capacitor are used as power supplies to supply power to the follow current inductor and the load;
and the sixth control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor is used as a power supply to supply power to the load.
According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
a battery module;
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 foregoing embodiments, in the embodiments of the present disclosure, the switch control circuit controls the switch states of the switching devices according to the control signal, so that each charging cycle forms a plurality of charging sub-phases, and the flying capacitor and the freewheeling inductor respectively serve as power supplies in each charging sub-phase. Thus, in the embodiment, by increasing the switching frequency of the whole charging device, the magnitude of the output ripple can be reduced, and accordingly, the withstand voltage requirement and size of the filter element can be reduced, which is beneficial to improving the charging efficiency and reliability.
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(a) and 1(b) are a charging circuit diagram and a current waveform diagram, respectively, in the related art.
Fig. 2 is a block diagram illustrating a charging device according to an example embodiment.
Fig. 3 is a circuit diagram illustrating a charging device according to an example embodiment.
FIGS. 4-7 are equivalent circuit diagrams illustrating stages according to an exemplary embodiment.
Fig. 8 is a diagram illustrating a charging current waveform according to an example embodiment.
Fig. 9-10 are flow diagrams illustrating a charge control method according to an exemplary embodiment.
FIG. 11 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.
Currently, a charging circuit in an electronic device is shown in fig. 1(a), and a waveform is shown in fig. 1 (b). Referring to fig. 1(a) and 1(b), 2 sub-phases are included within one charging cycle T: in phase1, the switching device Q1 is turned on, and at this timePower supply VINSupplying power to a load (namely a battery cell) through a follow current inductor L; in the second stage, the switching device Q2 is turned on, and the left end of the freewheeling inductor L is grounded, that is, the freewheeling inductor L is used as the power supply to charge the battery cell, so as to obtain the charging current i in fig. 1(b)LThe current waveform of (1).
It can be understood that, as the charging power increases, the ripple of the output voltage of the charging device shown in fig. 1(a) increases, and a filter element with a higher specification needs to be selected, so that the size and cost of the filter element increase, or the switching frequency of the switching tubes Q1 and Q2 increases to improve the ripple size, so that the switching loss increases by a factor of square, and the charging efficiency of the circuit decreases.
In order to solve the above problem, an embodiment of the present disclosure provides a charging device, and an inventive concept thereof is:
on the basis of not increasing the switching frequency of each switching device, the number of the switching devices is increased, so that the overall switching frequency of the switching control circuit is improved, and a plurality of charging sub-stages can be formed in each charging cycle; in each charging sub-phase, the flying capacitor and the follow current inductor respectively serve as a power supply to supply power to the load. In this embodiment, by increasing the switching frequency of the entire charging device, the magnitude of the output ripple can be reduced, and accordingly, the withstand voltage requirement and size of the filter element can be reduced, which is beneficial to improving the charging efficiency and reliability.
Fig. 2 is a block diagram illustrating a charging apparatus according to an exemplary embodiment, and referring to fig. 2, a charging apparatus includes: switch control circuit, follow current inductor L, filter capacitor C and flying capacitor CF. Wherein, the switch control circuit is respectively connected with the follow current inductor L and the flying capacitor CFConnecting; the follow current inductor L is connected with the filter capacitor C. Thus, the switch control circuit can control the switch state of each switch device according to the control signal to form a plurality of charging sub-phases in each charging period, and the capacitor C is transited in each charging sub-phaseFAnd the freewheeling inductor L function as a power supply, respectively.
In one embodiment, the flying capacitor CFOf the number and input voltage V of the charging deviceINAnd an output voltage VOUTIn association, the number of the plurality of charge sub-phases is associated with the number of the flying capacitors. For example, consider the respective flying capacitances CFNeed to act as a power source to charge the load, and thus the flying capacitor CFNeed a higher voltage than the load, especially if the load is a battery, so that the flying capacitor CFIs required to be smaller than the input voltage VINAnd an output voltage VOUTThe ratio of (a) to (b). E.g. input voltage VINIs 15V, and outputs voltage VOUT5V, then the flying capacitance CFIs less than or equal to 3, and in combination with the presence of a filter capacitor C in the charging device, a flying capacitor C is therefore providedFThere may be 2. Correspondingly, the number of charging sub-stages is also dependent on the flying capacitance CFThe number is determined and thus the number of switching devices in the switching control circuit can also be determined.
In one embodiment, the switch control circuit comprises an even number of switch devices which are sequentially connected in series, wherein the first switch device is connected to an external power supply, the last switch device is grounded, and the control ends of all the switch devices are connected to the processor; and a connection point is arranged between every two adjacent switching devices, and except that the middle connection point is connected to the follow current inductor, other connection points are respectively connected with one end of one of the flying capacitors. Taking the number of switching devices in the switching control circuit as an example to be 6, the circuit diagram shown in fig. 3 is obtained.
Referring to fig. 3, the switching control circuit includes a first switching device Q1, a second switching device Q2, a third switching device Q3, a fourth switching device Q4, a fifth switching device Q5, and a sixth switching device Q6. Wherein,
a first terminal (indicated by reference numeral 1) of the first switching device Q1 and an external power source (indicated by V)INLabeled) and second terminals (labeled with reference numeral 2) respectively connected to a first terminal (same as the first terminal of Q1, and the other subsequent switching devices) of a second switching device Q2 and a first flying capacitor CF1Is connected to the first end (indicated with reference numeral 1).
Wherein the second terminal of the first switching device Q1 and the second terminal of the second switching device Q2The connection point at one end is VCFH1。
The second end of the second switching device Q2 (the position of the second end is the same as that of the second end of the second switching device Q1, and the positions of the other subsequent switching devices are the same) is respectively connected with the first end of the third switching device Q3 and the second flying capacitor CF2Is connected to the first end (indicated with reference numeral 1).
Wherein a connection point of the second terminal of the second switching device Q2 and the first terminal of the third switching device Q3 is VCFL2。
A second terminal of the third switching device Q3 is connected to a first terminal of the fourth switching device Q4 and a first terminal of the freewheeling inductor L, respectively.
The second terminal of the fourth switching device Q4 is respectively connected with the first terminal of the fifth switching device Q5 and the second flying capacitor CF2Is connected to the second end of the first housing.
Wherein a connection point of the second terminal of the fourth switching device Q4 and the first terminal of the fifth switching device Q5 is VCFH2。
A second terminal of the fifth switching device Q5 is respectively connected with the first terminal of the sixth switching device Q6 and the first flying capacitor CF1Is connected to the second end of the first housing.
Wherein a connection point of the second terminal of the fifth switching device Q5 and the first terminal of the sixth switching device Q6 is VCFL1。
A second terminal of the sixth switching device Q6 is connected to the ground GND.
With continued reference to fig. 3, the charging apparatus includes 6 charging sub-stages, with the truth table for each switching device as shown in table 1.
Figure 608578DEST_PATH_IMAGE001
In conjunction with the truth table shown in table 1 and the circuit diagram shown in fig. 3, the operation of the charging device during a charging cycle is described, which includes:
stage 1
The first switching device Q1, the third switching device Q3 and the fifth switching device Q5 in the switch control circuit are turned on, and an equivalent circuit is shown in fig. 4. For clarity, the switching devices outside the loop are removed in fig. 4, and subsequent equivalent circuit diagrams are treated the same. Thus, externalPower supply VINA first switch device Q1 and a first flying capacitor CF1A fifth switching device Q5, a second flying capacitor CF2The third switching device Q3 and the follow current inductor L charge the battery, namely the external power supply VINAre respectively a first flying capacitor CF1A second flying capacitor CF2The follow current inductor L and an external load (battery Cell). Of course, the first flying capacitor C can be considered as the first flying capacitor C in the stage 1F1A second flying capacitor CF2And the follow current inductor L supplies power.
In this stage, V, see FIG. 8CFL1、VCFL2、VCFH1And VCFH2The potentials at the points are respectively 2/3VIN、1/3VIN、VIN、2/3VIN。
Stage 2
The fourth switching device Q4, the fifth switching device Q5 and the sixth switching device Q6 in the switching control circuit are turned on, and an equivalent circuit is shown in fig. 5. Thus, the freewheeling inductor L is grounded through the fourth switching device Q4, the fifth switching device Q5 and the sixth switching device Q6, that is, the freewheeling inductor L serves as a power supply to supply power to the battery Cell.
In this stage, V, see FIG. 8CFL1、VCFL2、VCFH1And VCFH2The potential at is 0 to-1/3V respectivelyIN、1/3VIN、0。
Stage 3
The second switching device Q2, the third switching device Q3 and the sixth switching device Q6 in the switch control circuit are turned on, and an equivalent circuit is shown in fig. 6. Thus, the first flying capacitor CF1The battery is charged through the second switching device Q2, the third switching device Q3 and the follow current inductor L, namely, the first flying capacitor CF1The battery Cell is powered as a power source.
In this stage, V, see FIG. 8CFL1、VCFL2、VCFH1And VCFH2The potential at is 0, 1/3V respectivelyIN、1/3VIN、2/3VIN。
Stage 4
The fourth switching device Q4, the fifth switching device Q5 and the sixth switching device Q6 in the switching control circuit are turned on, and an equivalent circuit is shown in fig. 5. Thus, the freewheeling inductor L is grounded through the fourth switching device Q4, the fifth switching device Q5 and the sixth switching device Q6, that is, the freewheeling inductor L serves as a power supply to supply power to the battery Cell.
In this stage, V, see FIG. 8CFL1、VCFL2、VCFH1And VCFH2The potential at is 0 to-1/3V respectivelyIN、1/3VIN、0。
Stage 5
The second switching device, the fourth switching device and the sixth switching device in the switching control circuit are turned on, and an equivalent circuit is shown in fig. 7. Thus, the first flying capacitor CF1Through the second switching device Q2 and the second flying capacitor CF2And the power is supplied to the battery through the fourth switching device Q4 and the follow current inductor L in series. I.e. the first flying capacitor CF1And a second flying capacitor CF2After being connected in series, the power supply is used as a power supply to supply power for the battery Cell.
Stage 6
The fourth switching device Q4, the fifth switching device Q5 and the sixth switching device Q6 in the switching control circuit are turned on, and an equivalent circuit is shown in fig. 5. Thus, the freewheeling inductor L is grounded through the fourth switching device Q4, the fifth switching device Q5 and the sixth switching device Q6, that is, the freewheeling inductor L serves as a power supply to supply power to the battery Cell.
In this stage, V, see FIG. 8CFL1、VCFL2、VCFH1And VCFH2The potential at is 0 to-1/3V respectivelyIN、1/3VIN、0。
Continuing with FIG. 8, the charging current iLIn one charging cycle, three charging phases can be divided, namely, Phase1 (Phase 1) and Phase2 (Phase 2) form a first charging sub-Phase, Phase3 (Phase 3) and Phase4 (Phase 4) form a second charging sub-Phase, and Phase5 (Phase 5) and Phase6 (Phase 6) form a third charging sub-Phase. Aiming at the first charging sub-stage, a power supply or a flying capacitor and a follow current inductor L in the first half stage supply power to the battery, so that the current is in a rising state; the follow current inductance L in the second half is used as a power supply to supply power to the battery, so that the current is reducedStatus. Thus, the fluctuation of each charging sub-phase in each charging cycle is smaller than that in the related art.
To this end, in the embodiments of the present disclosure, the switch control circuit controls the switch state of each switching device according to the control signal, so that each charging cycle forms a plurality of charging sub-phases, and the flying capacitor and the freewheeling inductor respectively serve as power supplies in each charging sub-phase. Thus, in the embodiment, by increasing the switching frequency of the whole charging device, the magnitude of the output ripple can be reduced, and accordingly, the withstand voltage requirement and size of the filter element can be reduced, which is beneficial to improving the charging efficiency and reliability.
Fig. 9 is a flow chart illustrating a charge control method according to an exemplary embodiment. Referring to fig. 9, a charging control method includes:
in step 91, the switching states of the switching devices in the switching control circuit are controlled such that a plurality of charging sub-phases are formed per charging cycle, and the flying capacitor and the freewheeling inductor respectively serve as power supplies in the charging sub-phases.
In an embodiment, the number of the plurality of charge phases is associated with the number of the flying capacitors, which is associated with the input voltage and the output voltage of the charging device.
In one embodiment, referring to fig. 10, controlling the switching states of the switching devices in the switching control circuit such that each charging cycle forms a plurality of charging sub-phases includes:
in step 101, respectively controlling a first switching device, a third switching device and a fifth switching device in the switch control circuit to be turned on, so that an external power supply respectively supplies power to a first flying capacitor, a second flying capacitor, a follow current inductor and an external load;
in step 102, respectively controlling a fourth switching device, a fifth switching device and a sixth switching device in the switching control circuit to be turned on, so that the freewheeling inductor serves as a power supply to supply power to the load;
in step 103, respectively controlling a second switching device, a third switching device and a sixth switching device in the switch control circuit to be turned on, so that the first flying capacitor is used as a power supply to supply power to the freewheeling inductor and the load;
in step 104, respectively controlling a fourth switching device, a fifth switching device and a sixth switching device in the switching control circuit to be turned on, so that the freewheeling inductor serves as a power supply to supply power to the load;
in step 105, respectively controlling a second switching device, a fourth switching device and a sixth switching device in the switching control circuit to be turned on, so that the first flying capacitor and the second flying capacitor are used as power supplies to supply power to the freewheeling inductor and the load;
in step 106, a fourth switching device, a fifth switching device and a sixth switching device in the switching control circuit are respectively controlled to be turned on, so that the freewheeling inductor serves as a power supply to supply power to the load.
It can be understood that the method provided by the embodiment of the present disclosure corresponds to the embodiment of the charging device of the above example, and specific contents may refer to the contents of each embodiment of the charging device, which are not described herein again.
The embodiment of the present disclosure further provides a charge control device, including:
and the switch state control module is used for controlling the switch state of each switch device in the switch control circuit so as to enable each charging cycle to form a plurality of charging sub-stages, and the flying capacitor and the follow current inductor are respectively used as power supplies in each charging sub-stage.
In one embodiment, the switch state control module comprises:
the first control unit is used for respectively controlling the conduction of a first switching device, a third switching device and a fifth switching device in the switch control circuit, so that an external power supply respectively supplies power to the first flying capacitor, the second flying capacitor, the follow current inductor and an external load;
the second control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor serves as a power supply to supply power to the load;
the third control unit is used for respectively controlling the conduction of a second switching device, a third switching device and a sixth switching device in the switch control circuit, so that the first flying capacitor is used as a power supply to supply power to the follow current inductor and the load;
the fourth control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor serves as a power supply to supply power to the load;
the fifth control unit is used for respectively controlling the conduction of a second switching device, a fourth switching device and a sixth switching device in the switching control circuit, so that the first flying capacitor and the second flying capacitor are used as power supplies to supply power to the follow current inductor and the load;
and the sixth control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor is used as a power supply to supply power to the load.
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. 11 is a block diagram illustrating an electronic device in accordance with an example embodiment. For example, the electronic device 1100 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. 11, electronic device 1100 may include one or more of the following components: processing component 1102, memory 1104, power component 1106, multimedia component 1108, audio component 1110, input/output (I/O) interface 1112, sensor component 1114, communication component 1116, and image capture component 1118.
The processing component 1102 generally handles overall operation of the electronic device 1100, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1102 may include one or more sets of processors 1120 to execute computer programs. Further, the processing component 1102 can include one or more sets of modules that facilitate interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102.
The memory 1104 is configured to store various types of data to support operations at the electronic device 1100. Examples of such data include computer programs for any application or method operating on the electronic device 1100, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 1104 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.
The power supply component 1106 provides power to the various components of the electronic device 1100. The power components 1106 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 1100. The power supply assembly 1106 may include a power chip that the controller may communicate to control the power chip to turn the switching device on or off to allow the battery to supply power or not to supply power to the motherboard circuitry.
The multimedia component 1108 includes a screen that provides an output interface between the electronic device 1100 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 1110 is configured to output and/or input audio signals. For example, the audio component 1110 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 1100 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 1104 or transmitted via the communication component 1116. In some embodiments, the audio assembly 1110 further includes a speaker for outputting audio signals.
The I/O interface 1112 provides an interface between the processing component 1102 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc.
The sensor assembly 1114 includes one or more sets of sensors for providing various aspects of state assessment for the electronic device 1100. For example, the sensor component 1114 may detect an open/closed state of the electronic device 1100, the relative positioning of components, such as a display and keypad of the electronic device 1100, the sensor component 1114 may also detect a change in the position of the electronic device 1100 or a component, the presence or absence of a target object in contact with the electronic device 1100, orientation or acceleration/deceleration of the electronic device 1100, and a change in the temperature of the electronic device 1100.
The communication component 1116 is configured to facilitate wired or wireless communication between the electronic device 1100 and other devices. The electronic device 1100 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 1116 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1116 also 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 1100 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 that includes an executable computer program, such as the memory 1104 that includes instructions, that are 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 (11)

1. A charging device, comprising: the device comprises a flying capacitor, a switch control circuit, a follow current inductor and a filter capacitor; the switch control circuit is respectively connected with the follow current inductor and the flying capacitor; the follow current inductor is connected with the filter capacitor;
the switch control circuit is used for controlling the switch state of each switch device according to the control signal so as to enable each charging cycle to form a plurality of charging sub-stages, and the flying capacitor and the follow current inductor are respectively used as power supplies in each charging sub-stage.
2. The charging apparatus of claim 1, wherein a number of the flying capacitors is associated with an input voltage and an output voltage of the charging apparatus, and wherein a number of the plurality of charging sub-phases is associated with a number of the flying capacitors.
3. The charging apparatus according to claim 1, wherein the switching control circuit comprises an even number of switching devices connected in series in sequence, wherein a first switching device is connected to an external power supply, a last switching device is connected to ground, and control terminals of all the switching devices are connected to the processor;
and a connection point is arranged between every two adjacent switching devices, and except that the middle connection point is connected to the follow current inductor, other connection points are respectively connected with one end of one of the flying capacitors.
4. The charging apparatus according to any one of claims 1 to 3, wherein the switch control circuit includes a first switching device, a second switching device, a third switching device, a fourth switching device, a fifth switching device, and a sixth switching device; wherein,
the first end of the first switching device is connected with an external 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 end 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 and the first end of the second flying capacitor;
the second end of the third switching device is respectively connected with the first end of the fourth switching device and the first end of the follow current inductor;
a second end of the fourth switching device is connected with a first end of the fifth switching device and a second end of the second flying capacitor respectively;
a second end of the fifth switching device is connected with a first end of the sixth switching device and a second end of the first flying capacitor respectively;
a second terminal of the sixth switching device is grounded.
5. A charging control method applied to the charging device according to any one of claims 1 to 4, the method comprising:
and controlling the switching state of each switching device in the switching control circuit to enable each charging period to form a plurality of charging sub-stages, wherein the flying capacitor and the follow current inductor are respectively used as power supplies in each charging sub-stage.
6. The charge control method of claim 5, wherein a number of the plurality of charge sub-phases is associated with a number of the flying capacitors, the number of the flying capacitors being associated with an input voltage and an output voltage of the charging device.
7. The charge control method of claim 5, wherein controlling the switching states of the switching devices in the switching control circuit such that each charging cycle forms a plurality of charging sub-phases comprises:
respectively controlling the first switching device, the third switching device and the fifth switching device in the switch control circuit to be conducted, so that an external power supply respectively supplies power to the first flying capacitor, the second flying capacitor, the follow current inductor and an external load;
respectively controlling a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit to be conducted, so that the follow current inductor serves as a power supply to supply power to the load;
respectively controlling a second switching device, a third switching device and a sixth switching device in the switch control circuit to be conducted, so that the first flying capacitor is used as a power supply to supply power to the follow current inductor and the load;
respectively controlling a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit to be conducted, so that the follow current inductor serves as a power supply to supply power to the load;
respectively controlling a second switching device, a fourth switching device and a sixth switching device in the switch control circuit to be conducted, so that the first flying capacitor and the second flying capacitor are used as power supplies to supply power to the follow current inductor and the load;
and respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor is used as a power supply to supply power to the load.
8. A charging control device applied to the charging apparatus according to any one of claims 1 to 4, comprising:
and the switch state control module is used for controlling the switch state of each switch device in the switch control circuit so as to enable each charging cycle to form a plurality of charging sub-stages, and the flying capacitor and the follow current inductor are respectively used as power supplies in each charging sub-stage.
9. The charge control device of claim 8, wherein the switch state control module comprises:
the first control unit is used for respectively controlling the conduction of a first switching device, a third switching device and a fifth switching device in the switch control circuit, so that an external power supply respectively supplies power to the first flying capacitor, the second flying capacitor, the follow current inductor and an external load;
the second control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor serves as a power supply to supply power to the load;
the third control unit is used for respectively controlling the conduction of a second switching device, a third switching device and a sixth switching device in the switch control circuit, so that the first flying capacitor is used as a power supply to supply power to the follow current inductor and the load;
the fourth control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor serves as a power supply to supply power to the load;
the fifth control unit is used for respectively controlling the conduction of a second switching device, a fourth switching device and a sixth switching device in the switching control circuit, so that the first flying capacitor and the second flying capacitor are used as power supplies to supply power to the follow current inductor and the load;
and the sixth control unit is used for respectively controlling the conduction of a fourth switching device, a fifth switching device and a sixth switching device in the switch control circuit, so that the follow current inductor is used as a power supply to supply power to the load.
10. An electronic device, comprising:
a charging device;
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 any of claims 5 to 7.
11. A readable storage medium having stored thereon an executable computer program, wherein the computer program when executed implements the steps of the method of any one of claims 5 to 7.
CN202010459058.8A 2020-05-27 2020-05-27 Charging device, charging control method and apparatus, electronic device, and storage medium Pending CN111371298A (en)

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CN110429815A (en) * 2019-07-19 2019-11-08 华为技术有限公司 The control method of booster circuit and booster circuit
US10530256B1 (en) * 2018-11-30 2020-01-07 Dialog Semiconductor (Uk) Limited Multi-level buck converter with reverse charge capability
CN111181396A (en) * 2019-09-11 2020-05-19 阳光电源股份有限公司 Suspension capacitance type multi-level bridge circuit and control method thereof

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US20160329809A1 (en) * 2015-05-05 2016-11-10 Texas Instruments Incorporated Multilevel boost dc to dc converter circuit
CN108400712A (en) * 2018-02-10 2018-08-14 杰华特微电子（杭州）有限公司 A kind of efficient reduction voltage circuit and its control method
US10530256B1 (en) * 2018-11-30 2020-01-07 Dialog Semiconductor (Uk) Limited Multi-level buck converter with reverse charge capability
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Application publication date: 20200703