CN111817387B - Charging circuit, control method thereof and electronic equipment - Google Patents
Charging circuit, control method thereof and electronic equipment Download PDFInfo
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- CN111817387B CN111817387B CN202010676485.1A CN202010676485A CN111817387B CN 111817387 B CN111817387 B CN 111817387B CN 202010676485 A CN202010676485 A CN 202010676485A CN 111817387 B CN111817387 B CN 111817387B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims description 20
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013528 artificial neural network Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The disclosure relates to the technical field of electronic equipment, and in particular relates to a charging circuit, a control method thereof and electronic equipment. The charging circuit comprises a first battery, a second battery, a charging interface, a first charging branch, a second charging branch and a control chip, wherein: the second battery is connected with the first battery in parallel and is smaller than the capacitance of the first battery; the charging interface is used for receiving a power supply signal; the first charging branch is connected with the charging interface and a first electrode of the first battery and used for charging the first battery and the second battery in a first charging mode; the second charging branch is connected with the charging interface and the first electrode of the first battery and used for charging the first battery and the second battery in a second charging mode; the current regulating module in the control chip is connected with the first electrode of the first battery and the first electrode of the second battery, and is connected with the second electrode of the first battery and the second electrode of the second battery, and is used for regulating the charging current of the second battery.
Description
Technical Field
The disclosure relates to the technical field of electronic equipment, and in particular relates to a charging circuit, a control method thereof and electronic equipment.
Background
As technology evolves and advances, foldable electronic devices gradually start to be used. A plurality of batteries are often provided in a foldable electronic device, and the foldable electronic device needs to charge the plurality of batteries at the same time when charging. In electronic devices, the charging efficiency of the electronic device is often improved by increasing the charging power of the electronic device. When the charging power of the electronic equipment is increased, the electronic equipment is seriously heated in the charging process, and the electronic equipment has a large potential safety hazard.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The disclosure aims to provide a charging circuit, a control method of the charging circuit and an electronic device, thereby reducing the cost of the electronic device at least to a certain extent and reducing the heating value of the electronic device.
In order to achieve the above purpose, the present disclosure adopts the following technical scheme:
according to one aspect of the present disclosure, there is provided a charging circuit including:
A first battery;
The second battery is connected with the first battery in parallel, and the capacitance of the second battery is smaller than that of the first battery;
the charging interface is used for receiving a power supply signal;
The first charging branch is used for charging the first battery and the second battery in a first charging mode;
The first end of the second charging branch is connected with the charging interface, the second end of the second charging branch is connected with the first electrode of the first battery, and the second charging branch is used for charging the first battery and the second battery in a second charging mode;
The control chip comprises a current regulation module, wherein the current regulation module is connected with a first electrode of the first battery and a first electrode of the second battery and is connected with a second electrode of the first battery and a second electrode of the second battery, and the current regulation module is used for regulating the charging current of the second battery;
wherein the charging power of the second charging mode is smaller than the charging power of the first charging mode.
According to another aspect of the present disclosure, there is provided a control method of a charging circuit, the control method including:
when the charging current ratio of the second battery to the first battery is larger than a preset threshold value, the charging current of the second battery is regulated to be smaller by the current regulating module, and the preset threshold value is equal to the ratio of the capacitance of the second battery to the capacitance of the first battery;
And when the charging current ratio is smaller than the preset threshold value, regulating the charging current of the second battery through the current regulating module.
According to still another aspect of the present disclosure, there is provided an electronic device including the charging circuit described in any one of the above.
According to the charging circuit, power is supplied to the first battery and the second battery which are connected in parallel through the first charging branch circuit in the first charging mode (the capacitance of the second battery is smaller than that of the first battery), power is supplied to the first battery and the second battery through the second charging branch circuit in the second mode, and charging current of the second battery is regulated through the current regulating module in the control chip, so that current limiting of the second battery is achieved, and further the first battery and the second battery can be guaranteed to be full.
Compared with the technical scheme in the prior art (the first battery and the second battery are respectively connected with the current-limiting switch in series), the charging circuit of the application does not need to be provided with the current-limiting switch, so that the cost of the electronic equipment is reduced, the heating value of the electronic equipment is also reduced, and the charging circuit is suitable for a fast charging scheme of parallel batteries.
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 above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic block diagram of a charging circuit provided by an exemplary embodiment of the present disclosure.
Fig. 2 is a schematic block diagram of a current regulation module provided by an exemplary embodiment of the present disclosure.
Fig. 3 is another schematic block diagram of a charging circuit provided by an exemplary embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a current flow when the first switching unit enters the current limiting mode according to an exemplary embodiment of the present disclosure.
Fig. 5 is a schematic diagram of a current flow when the second switching unit enters the current limiting mode according to an exemplary embodiment of the present disclosure.
Fig. 6 is a flow chart illustrating a control method of a charging circuit according to an exemplary embodiment of the present disclosure.
Fig. 7 is a schematic diagram of a first electronic device according to an exemplary embodiment of the present disclosure.
Fig. 8 is a schematic diagram of a second electronic device provided in an exemplary embodiment of the present disclosure.
In the figure: 110. a first battery; 111. a first cell; 112. a first protective plate; 120. a second battery; 121. a second cell; 122. a second protection plate; 310. a charging interface; 410. a first charging branch; 4100. a direct charging switch; 510. a second charging branch; 5100. a power management module; 610. a control chip; 611. a current regulation module; 6111. a first switching unit; 6112. a detection control unit; 6113. a second switching unit; 710. a first housing; 711. a first accommodating portion; 712. a first middle frame; 713. a first rear cover; 720. a second housing; 721. a second accommodating portion; 722. a second middle frame; 723. a second rear cover; 730. a first circuit board; 740. a second circuit board; 810. a first display unit; 820. a second display unit; 830. a bendable portion.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, devices, steps, etc. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, or in one or more software-hardened modules, or in different networks and/or processor devices and/or microcontroller devices.
In the embodiment of the disclosure, as shown in fig. 1, a charging circuit is provided, where the charging circuit may include a first battery 110, a second battery 120, a charging interface 310, a first charging branch 410, a second charging branch 510, and a control chip 610, where:
The first battery 110 and the second battery 120 are connected in parallel, and the second battery 120 has a smaller capacitance than the first battery 110; the charging interface 310 is configured to receive a power signal; a first end of the first charging branch 410 may be connected to the charging interface 310, and a second end may be connected to a first electrode of the first battery 110, and the first charging branch 410 is configured to charge the first battery 110 and the second battery 120 in the first charging mode; a first end of the second charging branch 510 may be connected to the charging interface 310, and a second end may be connected to a first electrode of the first battery 110, and the second charging branch 510 is configured to charge the first battery 110 and the second battery 120 in a second charging mode (a charging power of the second charging mode is less than a charging power of the first charging mode); the control chip 610 may include a current adjustment module 611, the current adjustment module 611 may be connected to the first electrode of the first battery 110 and the first electrode of the second battery 120, and may be connected to the second electrode of the first battery 110 and the second electrode of the second battery 120, the current adjustment module 611 being used to adjust a charging current of the second battery 120.
In the charging circuit of the embodiment of the disclosure, in a first charging mode, power is supplied to the first battery 110 and the second battery 120 connected in parallel through the first charging branch 410 (the capacitance of the second battery 120 is smaller than that of the first battery 110), in a second mode, power is supplied to the first battery 110 and the second battery 120 through the second charging branch 510, and the charging current of the second battery 120 is regulated through the current regulating module 611 in the control chip 610, so that current limitation of the second battery 120 is realized, and further, the first battery 110 and the second battery 120 can be fully charged.
Compared with the technical scheme in the prior art (the current limiting switches are respectively connected in series on the first battery 110 and the second battery 120), the charging circuit of the application does not need to be provided with the current limiting switch, so that the cost of the electronic equipment is reduced, the heating value of the electronic equipment is also reduced, and the charging circuit is suitable for a fast charging scheme of parallel batteries.
The following will describe each part of the charging circuit provided in the embodiment of the present disclosure in detail:
As shown in fig. 1, a first electrode (positive electrode) of the first battery 110 is connected to a first electrode (positive electrode) of the second battery 120 through the control chip 610, a second electrode (negative electrode) of the first battery 110 is connected to a second electrode (negative electrode) of the second battery 120 through the control chip 610, and the second electrode (negative electrode) of the first battery 110 and the second electrode (negative electrode) of the second battery 120 form a ground electrode, which is not described in detail herein.
The charging interface 310 is used to connect a charging power source to enable charging of the first battery 110 and the second battery 120. For example, the charging interface 310 may be a Micro-USB interface, a Type-c interface, or a contact interface, which is not specifically limited herein.
The first end of the first charging branch 410 is connected to the charging interface 310, and the second end is connected to the first electrode (positive electrode) of the first battery 110, for charging the first battery 110 and the second battery 120 in the first charging mode; the first end of the second charging branch 510 is connected to the charging interface 310, and the second end is connected to the first electrode (positive electrode) of the first battery 110, for charging the first battery 110 and the second battery 120 in the second charging mode.
The second charging mode has a lower charging power than the first charging mode, and illustratively the second charging branch 510 has a lower charging current than the first charging branch 410. Accordingly, the first charging branch 410 may be a fast charging branch, and the second charging branch 510 may be a pre-charging branch (pre-charging refers to that in a battery charging process of a lithium ion battery or the like, the electronic device needs to be pre-charged first, so as to avoid directly entering a fast charging mode to affect the service life of the battery or damage the battery) or a common charging branch.
Specifically, as shown in fig. 3, the first charging branch 410 may include a direct charging switch 4100, a first end of the direct charging switch 4100 is connected to the charging interface 310, a second end of the direct charging switch 4100 is connected to a first electrode (positive electrode) of the first battery 110, and the direct charging switch 4100 is turned on in the first charging mode for transmitting the power signal to the first battery 110 and the second battery 120; the second charging branch 510 may include a power management module 5100, a first end of the power management module 5100 is connected to the charging interface 310, a second end of the power management module 5100 is connected to a first electrode of the first battery 110, and the power management module 5100 is turned on in the second charging mode for transmitting a power signal to the first battery 110 and the second battery 120.
The power management module 5100 (for example, PMIC 2221) is configured to manage charging and discharging of the first battery 110 and the second battery 120, and the power management module 5100 may include a switching circuit and a management circuit, wherein:
the switching circuit may include a charging switch that may be turned on in response to the second charging signal, so that the first battery 110 and the second battery 120 may be charged through the second charging branch 510; the management circuit is configured to control the charging current and the charging voltage of the second charging branch 510, and the management circuit may include a voltage adjustment circuit and a current adjustment circuit, where the management circuit may be connected to a processor in the electronic device, and the voltage adjustment circuit and the current adjustment circuit control the charging signal or the discharging signal output by the second charging branch 510 in response to the charging and discharging management signal sent by the processor.
During charging and discharging, electrical devices (such as a display device, a processor, a memory, a camera module, and an audio module) in the electronic apparatus may be powered by the discharging end of the power management module 5100, which will not be described in detail herein.
As shown in fig. 1 and 2, the control chip 610 includes a current adjustment module 611, and the current adjustment module 611 includes a first switching unit 6111 and a detection control unit 6112, wherein:
a first end of the first switching unit 6111 is connected to the first electrode of the first battery 110, and a second end of the first switching unit 6111 is connected to the first electrode of the second battery 120; the control end of the first switch unit 6111 is connected with the detection control unit 6112; the detection control unit 6112 is connected to the second battery 120, and is configured to detect a charging current of the second battery 120, generate a current-limiting control signal of the second battery 120, and control the first switch unit 6111 to adjust the charging current of the second battery 120 according to the current-limiting control signal.
Specifically, when the charging current ratio of the second battery 120 and the first battery 110 is greater than a preset threshold (the preset threshold is equal to the ratio of the capacities of the second battery 120 and the first battery 110, which will not be described in detail herein), the detection control unit 6112 generates a first current limiting control signal, and adjusts the impedance of the first switching unit 6111 according to the first current limiting control signal, so as to reduce the charging current of the second battery 120; when the charging current ratio of the second battery 120 to the first battery 110 is smaller than the preset threshold, the detection control unit 6112 generates a second current limiting control signal, and adjusts the impedance of the first switch unit 6111 according to the first current limiting control signal, so as to increase the charging current of the second battery 120.
For example, when the first switching unit 6111 is a MOS transistor, the first end of the MOS transistor may be a source, the second end of the MOS transistor may be a drain, and the control end of the MOS transistor is a gate. Or the first end of the MOS transistor may be a drain, and the second end of the MOS transistor may be a source, which is not particularly limited herein. The first switch unit 6111 may be an N-type MOS transistor or a P-type MOS transistor, and when the first switch unit 6111 is an N-type MOS transistor, the control signal of the first switch unit 6111 is a high-level signal; when the first switch unit 6111 is a P-type MOS transistor, the control signal of the first switch unit 6111 may be a low level signal, which will not be described in detail herein.
In addition, the current adjusting module 611 further includes a second switch unit 6113, a first end of the second switch unit 6113 is connected to the second electrode of the first battery 110, a second end of the second switch unit 6113 is connected to the second electrode of the second battery 120, a control end of the second switch unit 6113 is connected to the detection control unit 6112, and the detection control unit 6112 can also control the second switch unit 6113 to adjust the charging current of the second battery 120 according to the current limiting control signal, which is not limited herein.
It should be noted that the detection control unit 6112 is also capable of detecting the voltages of the first battery 110 and the second battery 120, and as shown in fig. 4 and 5, the voltage of the first battery 110 may be detected through the BAT1p_sen/BAT1n_sen pin, and the voltage of the second battery 120 may be detected through the BAT2p_sen/BAT2n_sen pin, which will not be described in detail herein.
When the first battery 110 and the second battery 120 are discharged after being buckled, if a voltage difference exists between the voltage of the first battery 110 and the voltage of the second battery 120, and the voltage difference is large, the detection control unit 6112 may enable the first switch unit 6111 or the second switch unit 6113 to enter a current limiting mode, specifically:
When the voltage of the first battery 110 is higher than the voltage of the first battery 110 and the voltage difference between the first battery 110 and the first battery 110 exceeds a preset voltage threshold, the detection control unit 6112 generates a third current limiting control signal, and controls the current of the first switch unit 6111 to flow from the second battery 120 to the first battery 110 according to the third current limiting control signal, and at this time, the first switch unit 6111 enters a current limiting mode;
when the voltage of the second battery 120 is higher than the voltage of the first battery 110 and the voltage difference between the second battery 120 and the first battery 110 exceeds the preset voltage threshold, the detection control unit 6112 generates a fourth current limiting control signal, and controls the current of the second switch unit 6113 to flow from the first battery 110 to the second battery 120 according to the fourth current limiting control signal, and at this time, the second switch unit 6113 enters a current limiting mode.
The exemplary embodiment of the present disclosure further provides a control method of a charging circuit, for controlling the charging circuit described in any one of the foregoing, as shown in fig. 6, the control method may include the following steps:
Step S610, when the charging current ratio of the second battery 120 to the first battery 110 is greater than the preset threshold, the charging current of the second battery 120 is adjusted by the current adjustment module 611, and the preset threshold is equal to the ratio of the capacities of the second battery 120 and the first battery 110;
In step S620, when the charging current ratio is smaller than the preset threshold, the charging current of the second battery 120 is adjusted by the current adjustment module 611.
In addition, the operation steps of the first switch unit 6111 and the second switch unit 6113 for entering the current limiting mode are described in detail above, and will not be repeated here.
The exemplary embodiments of the present disclosure also provide an electronic device including the above-described charging circuit.
As shown in fig. 7, the electronic device may include a first housing 710, a second housing 720, a first circuit board 730, and a second circuit board 740, the first housing 710 having a first receiving portion 711, the first battery 110 being provided to the first receiving portion 711; the second housing 720 has a second accommodating portion 721, the second housing 720 is connected to the first housing 710, the second battery 120 is disposed in the second accommodating portion, and the charging interface 310 is disposed on a side of the first housing 710 away from the second housing 720.
The first battery 110 may include a first cell 111 and a first protection plate 112, the first protection plate 112 is disposed on the first cell 111, the second battery 120 may include a second cell 121 and a second protection plate 122, and the second protection plate 122 is disposed on the second cell 121.
The electronic device provided by the embodiments of the present disclosure may be a foldable electronic device, and in this case, the electronic device may further include a rotation shaft through which the first housing 710 and the second housing 720 are hinged. The first case 710 may include a first middle frame 712 and a first rear cover 713, the first middle frame 712 and the first rear cover 713 forming a first receiving portion 711, and the first circuit board 730 and the first battery 110 being provided to the first receiving portion 711. The second case 720 may include a second middle frame 722 and a second rear cover 723, the second middle frame 722 and the second rear cover 723 forming a second receiving portion 721, and the second circuit board 740 and the second battery 120 are disposed in the second receiving portion 721.
The first middle frame 712 and the second middle frame 722 may be metal middle frames, and when the first middle frame 712 is a metal middle frame, the antenna radiator of the electronic device may be disposed in the metal middle frame. Or the first middle frame 712 and the second middle frame 722 may also be non-metallic middle frames, such as plastic middle frames and glass middle frames. Of course, in practical applications, the materials of the first middle frame 712 and the second middle frame 722 may also be different, for example, the first middle frame 712 is a metal middle frame, and the second middle frame 722 is a glass middle frame, which is not specifically limited in the embodiments of the disclosure.
The first rear cover 713 and the second rear cover 723 may be a split structure or an integrated structure, and when the first middle frame 712 and the second middle frame 722 are non-metal middle frames, the first rear cover 713 and/or the second rear cover 723 may be metal rear covers, and an antenna radiator of the electronic device may be provided to the first rear cover 713 and/or the second rear cover 723. The first and second rear covers 713 and 723 may be flexible rear covers.
The capacity of the first battery 110 is greater than the capacity of the second battery 120, and thus the volume of the first battery 110 is greater than the volume of the second battery 120. The volumes of the receiving cavities of the first and second cases 710 and 720 are similar, so that the area of the first circuit board 730 is smaller than the area of the second circuit board 740, and the second circuit board 740 may be a motherboard of the electronic device. The first circuit board 730 may be mounted to the first middle frame 712, and the second circuit board 740 may be mounted to the second middle frame 722. The first circuit board 730 and the second circuit board 740 may each be provided with a ground point.
One or more of a motor, a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera, a sensor module, a gyroscope, and a processor may be integrated on the second circuit board 740.
The sensor module can comprise a depth sensor, a pressure sensor, a gyroscope sensor, a barometric sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor and the like. The processors may include application processors (Application Processor, APs), modem processors, graphics processors (Graphics Processing Unit, GPU), image signal processors (IMAGE SIGNAL Processor, ISP), controllers, video codecs, digital signal processors (DIGITAL SIGNAL Processor, DSP), baseband processors and/or neural network processors (Neural-network Processing Unit, NPU), and the like. Wherein the different processing units may be separate devices or may be integrated in one or more processors. The processor may be connected to the direct charge switch 4100 and the power management module 5100 for providing corresponding control signals to the direct charge switch 4100 and the power management module 5100.
A display screen is arranged on one side of the middle frame far away from the rear cover, and the display screen can be a bendable display screen. As shown in fig. 8, the flexible display screen may include a first display portion 810 and a second display portion 820. The first display 810 is connected to the first middle frame 712, that is, the first display 810 covers the first battery 110. The second display portion 820 is connected to the second middle frame 722, that is, the second display area covers the second battery 120. A bendable portion 830 is disposed between the first display portion 810 and the second display portion 820, the bendable portion 830 is a flexible display portion, and the bendable portion 830 covers the rotating shaft. The first display portion 810 and the second display portion 820 of the display screen may be displayed in a split screen or may be displayed in a whole screen.
The display screen may be a display screen forming a display surface of the electronic device for displaying information such as images, text, etc. The display screen may be a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD) or an Organic Light-Emitting Diode (OLED) display.
A flexible cover plate may be provided on the display screen. The flexible cover plate can cover the display screen to protect the display screen and prevent the display screen from being scratched or damaged by water. The display screen may include a display area and a non-display area. The display area performs a display function of a display screen and is used for displaying information such as images and texts. The non-display area does not display information. The non-display area may be used to provide functional modules such as cameras, receivers, proximity sensors, etc. In some embodiments, the non-display area may include at least one area located at an upper portion and a lower portion of the display area.
The display screen may be a full screen. At this time, the display screen can display information in full screen, so that the electronic device has a larger screen duty ratio. The display screen includes only a display area and does not include a non-display area. At this time, functional modules such as a camera and a proximity sensor in the electronic device may be hidden under the display screen, and a fingerprint identification module of the electronic device may be disposed on the back of the electronic device.
It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the disclosure. The disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are within the scope of the present disclosure. It should be understood that the present disclosure disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments described herein explain the best modes known for practicing the disclosure and will enable others skilled in the art to utilize the disclosure.
Claims (13)
1. A charging circuit, comprising:
A first battery;
The second battery is connected with the first battery in parallel, and the capacitance of the second battery is smaller than that of the first battery;
the charging interface is used for receiving a power supply signal;
The first charging branch is used for charging the first battery and the second battery in a first charging mode;
The first end of the second charging branch is connected with the charging interface, the second end of the second charging branch is connected with the first electrode of the first battery, and the second charging branch is used for charging the first battery and the second battery in a second charging mode;
The control chip comprises a current regulation module, wherein the current regulation module is connected with a first electrode of the first battery and a first electrode of the second battery and is connected with a second electrode of the first battery and a second electrode of the second battery, and the current regulation module is used for regulating the charging current of the second battery;
When the charging current ratio of the second battery to the first battery is larger than a preset threshold value, the charging current of the second battery is reduced through a current adjusting module, and the preset threshold value is equal to the ratio of the capacitance of the second battery to the capacitance of the first battery; and when the charging current ratio is smaller than the preset threshold value, regulating the charging current of the second battery through the current regulating module.
2. The charging circuit of claim 1, wherein the first charging branch comprises:
the first end of the direct charging switch is connected with the charging interface, the second end of the direct charging switch is connected with the first electrode of the first battery, and the direct charging switch is conducted in the first charging mode and used for transmitting the power supply signal to the first battery and the second battery.
3. The charging circuit of claim 1, wherein the second charging branch comprises:
The first end of the power management module is connected with the charging interface, the second end of the power management module is connected with the first electrode of the first battery, and the power management module is conducted in the second charging mode and used for transmitting the power signal to the first battery and the second battery.
4. The charging circuit of claim 1, wherein the current regulation module comprises:
The first end of the first switch unit is connected with the first electrode of the first battery, the second end of the first switch unit is connected with the first electrode of the second battery, and the control end of the first switch unit receives a current limiting control signal.
5. The charging circuit of claim 4, wherein the current regulation module further comprises:
The detection control unit is connected with the second battery and the control end of the first switch unit and is used for detecting the charging current of the second battery, and the detection control unit can generate the current limiting control signal and control the first switch unit to adjust the charging current of the second battery according to the current limiting control signal.
6. The charging circuit of claim 5, wherein the detection control unit generates a first current limit control signal and adjusts the charging current of the second battery according to the first current limit control signal;
the detection control unit generates a second current limiting control signal and regulates the charging current of the second battery according to the second current limiting control signal.
7. The charging circuit of claim 5, wherein the current regulation module further comprises:
The first end of the second switch unit is connected with the second electrode of the first battery, the second end of the second switch unit is connected with the second electrode of the second battery, and the control end of the second switch unit is connected with the detection control unit.
8. The charging circuit of claim 7, wherein the first switching unit enters a current limiting mode when a voltage of the first battery is higher than a voltage of the second battery and a voltage difference of the first battery and the second battery exceeds a preset voltage threshold when the first battery and the second battery are engaged;
When the voltage of the second battery is higher than that of the first battery and the voltage difference between the second battery and the first battery exceeds the preset voltage threshold, the second switch unit enters a current limiting mode.
9. The charging circuit according to claim 8, wherein the detection control unit is capable of detecting voltages of the first battery and the second battery;
when the voltage of the first battery is higher than the voltage of the second battery and the voltage difference of the first battery and the second battery exceeds a preset voltage threshold value, the detection control unit generates a third current limiting control signal and controls the current of the first switch unit to flow from the second battery to the first battery according to the third current limiting control signal;
when the voltage of the second battery is higher than that of the first battery and the voltage difference between the second battery and the first battery exceeds a preset voltage threshold, the detection control unit generates a fourth current limiting control signal and controls the current of the second switch unit to flow from the first battery to the second battery according to the fourth current limiting control signal.
10. A control method of a charging circuit, characterized by comprising:
when the charging current ratio of the second battery to the first battery is larger than a preset threshold value, the charging current of the second battery is regulated to be smaller by the current regulating module, and the preset threshold value is equal to the ratio of the capacitance of the second battery to the capacitance of the first battery;
And when the charging current ratio is smaller than the preset threshold value, regulating the charging current of the second battery through the current regulating module.
11. The control method according to claim 10, characterized in that the method further comprises:
when the voltage of the first battery is higher than the voltage of the second battery and the voltage difference of the first battery and the second battery exceeds a preset voltage threshold, controlling the current of a first switch unit to flow from the first battery to the second battery through the current regulation module;
When the voltage of the second battery is higher than the voltage of the first battery and the voltage difference between the second battery and the first battery exceeds a preset voltage threshold, controlling a second switch unit current to flow from the second battery to the first battery through the current regulation module.
12. An electronic device comprising the charging circuit according to any one of claims 1 to 9.
13. The electronic device of claim 12, wherein the electronic device comprises:
The first shell is provided with a first accommodating part, and the first battery is arranged on the first accommodating part;
The second shell is connected with the first shell, the second shell is provided with a second accommodating part, a second battery is arranged in the second accommodating part, the capacitance of the second battery is smaller than that of the first battery, and a charging interface is arranged on one side, far away from the second shell, of the first shell;
And the first shell and the second shell are hinged through the rotating shaft.
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| CN116647010B (en) * | 2021-09-16 | 2024-04-09 | 荣耀终端有限公司 | Charging and discharging circuit and electronic device |
| CN218829139U (en) * | 2022-07-22 | 2023-04-07 | 荣耀终端有限公司 | Dual-battery management circuit and electronic equipment |
| CN118057701A (en) * | 2022-11-21 | 2024-05-21 | 荣耀终端有限公司 | Foldable electronic device and control method |
| CN117728525A (en) * | 2023-05-19 | 2024-03-19 | 荣耀终端有限公司 | Charging control method and device |
| CN116704150B (en) * | 2023-08-09 | 2023-11-17 | 威创软件南京有限公司 | Three-dimensional presentation method and system for dynamic flow of energy of cold-hot gas electric grid frame pipeline |
| CN117691695A (en) * | 2023-08-18 | 2024-03-12 | 荣耀终端有限公司 | Charging circuit and electronic equipment |
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