CN113131547A - Earphone charging method, earphone charging device and wireless earphone set - Google Patents

Earphone charging method, earphone charging device and wireless earphone set Download PDF

Info

Publication number
CN113131547A
CN113131547A CN201911425477.3A CN201911425477A CN113131547A CN 113131547 A CN113131547 A CN 113131547A CN 201911425477 A CN201911425477 A CN 201911425477A CN 113131547 A CN113131547 A CN 113131547A
Authority
CN
China
Prior art keywords
current
charging
preset
voltage
output voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201911425477.3A
Other languages
Chinese (zh)
Other versions
CN113131547B (en
Inventor
夏令东
高铭坤
黄健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wanmo Acoustics Co ltd
Original Assignee
Wanmo Acoustics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wanmo Acoustics Co ltd filed Critical Wanmo Acoustics Co ltd
Priority to CN201911425477.3A priority Critical patent/CN113131547B/en
Priority claimed from CN201911425477.3A external-priority patent/CN113131547B/en
Publication of CN113131547A publication Critical patent/CN113131547A/en
Application granted granted Critical
Publication of CN113131547B publication Critical patent/CN113131547B/en

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1025—Accumulators or arrangements for charging
    • 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

Abstract

The application relates to an earphone charging method, a charging device thereof and a wireless earphone set, wherein the charging method comprises the following steps: providing an initial output voltage for charging the earphone battery, and detecting a charging current; gradually reducing the current output voltage until the current charging current is less than or equal to a second preset current; detecting the charging current, and gradually increasing the current output voltage until the current charging current is greater than the second preset current when the current charging current is less than or equal to the second preset current; the initial output voltage is greater than or equal to a first preset voltage, and the first preset voltage is greater than or equal to a minimum output voltage required by the earphone battery in the second charging mode. By the charging method, the linear change of the output voltage along with the charging voltage can be maintained, and the charging loss is reduced.

Description

Earphone charging method, earphone charging device and wireless earphone set
Technical Field
The invention relates to the field of earphone charging, in particular to an earphone charging method, an earphone charging device and a wireless earphone set.
Background
With the development of science and technology, the technology of wireless wearable devices is mature, and wireless earphones, particularly TWS (two way communication system) true wireless Bluetooth earphones are more popular and more popular due to the convenience of carrying and wearing compared with traditional wired earphones. The wireless earphone is internally provided with an earphone battery for providing electric quantity for the work of the earphone. When the electric quantity of the battery of the earphone is consumed, the charging device is required to output voltage to charge the battery of the earphone. Because the voltage of the earphone battery is changed in real time during charging, the charging efficiency is highest and the charging loss is minimum when the output voltage of the charging device is linearly changed along with the voltage of the earphone battery in an ideal state. However, the output voltage provided by the charging device is generally a fixed voltage, and when the difference between the output voltage provided by the power supply device and the voltage of the earphone battery is large, the charging efficiency is low, and the charging loss is large.
Disclosure of Invention
Based on this, the application provides an earphone charging method, an earphone charging device and a wireless earphone set, which are beneficial to improving the earphone charging efficiency and reducing the charging loss.
A headset charging method, comprising: providing an initial output voltage for charging the earphone battery, and detecting a charging current; gradually reducing the current output voltage until the current charging current is less than or equal to a second preset current; when the charging current is less than or equal to a second preset current, gradually increasing the current output voltage until the current charging current is greater than the second preset current;
the initial output voltage is greater than or equal to a first preset voltage, the first preset voltage is greater than or equal to a minimum output voltage required by the earphone battery in a second charging mode, and the earphone charging voltage in the second charging mode is kept constant.
In one embodiment, before gradually decreasing the present output voltage, the method further includes:
detecting the charging current, and maintaining the output voltage as a first preset voltage for charging when the charging current is less than or equal to the first preset current; when the charging current is larger than the first preset current, gradually reducing the current output voltage until the current charging current is smaller than or equal to the second preset current; the first preset current is a charging current when the earphone battery enters a second charging mode from a first charging mode, and the earphone charging voltage in the first charging mode continuously rises.
In one embodiment, the detecting the charging current gradually reduces the present output voltage until the present charging current is less than or equal to a second predetermined current; when the present charging current is less than or equal to the second preset current, gradually increase the present output voltage until the present charging current is greater than the second preset current, including:
reducing the current output voltage according to a first preset increment;
detecting the charging current, and when the charging current is greater than a second preset current, continuing to reduce the current output voltage according to a first preset increment until the current charging current is less than or equal to the second preset current; and when the charging current is less than or equal to a second preset current, increasing the current output voltage according to a second preset increment until the current charging current is greater than the second preset current.
In one embodiment, the increasing the present output voltage by the second preset increment until the present charging current is greater than the second preset current includes:
and increasing the current output voltage according to a second preset increment, maintaining the output voltage as the first preset voltage for charging when the output voltage is greater than or equal to the first preset voltage, and continuing to increase the current output voltage according to the second preset increment when the output voltage is less than the first preset voltage and the current charging current is less than or equal to the second preset current.
In one embodiment, the first preset increment is equal to the second preset increment, and the first preset increment and the second preset increment range from 0.1V to 0.5V.
In one embodiment, the initial output voltage is equal to a first preset voltage, the first preset voltage is equal to the sum of the rated voltage of the earphone battery and the minimum voltage drop of the charging management module, and the second preset current is equal to the minimum charging current required by charging.
A headset charging device for coupling with a headset and charging a headset battery, comprising:
the voltage regulating module is used for providing output voltage for the earphone;
the control module is used for controlling the voltage regulating module to generate initial output voltage before charging and controlling the voltage regulating module to gradually reduce the current output voltage until the current charging current is less than or equal to a second preset current during charging; the voltage regulating module is used for detecting the charging current, and controlling the voltage regulating module to gradually increase the current output voltage until the current charging current is greater than the second preset current if the current charging current is less than or equal to the second preset current; the initial output voltage is greater than or equal to a first preset voltage, the first preset voltage is greater than or equal to a minimum output voltage required by the earphone battery in a second charging mode, and the earphone charging voltage in the second charging mode is kept constant.
In one embodiment, before controlling the voltage regulating module to gradually decrease the current output voltage, the control module is further configured to control the voltage regulating module to maintain the output voltage at the first preset voltage for charging when the charging current is less than or equal to the first preset current, and control the voltage regulating module to gradually decrease the current output voltage when the charging current is greater than the first preset current; the first preset current is a charging current when the earphone battery enters a second charging mode from a first charging mode, and the earphone charging voltage in the first charging mode continuously rises.
In one embodiment, the controlling module controls the voltage regulating module to gradually increase the present output voltage until the present charging current is greater than a second preset current, and the controlling module includes: the control module controls the voltage regulating module to increase the current output voltage according to a second preset increment, when the output voltage is greater than or equal to the first preset voltage, the voltage regulating module is controlled to maintain the output voltage as the first preset voltage for charging, and when the output voltage is less than the first preset voltage and the current charging current is less than or equal to the second preset current, the voltage regulating module is continuously controlled to increase the current output voltage according to the second preset increment.
A wireless headset kit comprising:
an earphone charging device, which is any one of the earphone charging devices described above;
the earphone comprises a charging management module and an earphone battery, wherein the charging management module is used for acquiring the output voltage and converting the output voltage into a charging voltage to charge the earphone battery.
According to the earphone charging method, the earphone charging device and the wireless earphone set, an initial output voltage is set, the output voltage is gradually reduced in the charging period until the current charging current is smaller than or equal to a second preset current, which indicates that the output voltage is too low and the earphone battery cannot be normally charged, and then the output voltage is increased until the current charging current is larger than the second preset current, so that the charging current is higher than the second preset current. During charging, the charging voltage of the earphone is increased, once the current charging current is less than or equal to the second preset current, the output voltage is increased again until the current charging current is greater than the second preset current, so that the charging current is always greater than the second preset current to meet the charging requirement. In the charging process, the output voltage gradually rises, and the output voltage is linearly charged along with the change of the charging voltage of the earphone battery, so that the charging efficiency is improved, and the charging loss is reduced.
Drawings
FIG. 1 is a graph of earphone battery charging curves;
fig. 2 is a flowchart illustrating a charging method for a battery of an earphone according to an embodiment of the present application;
fig. 3 is a flow chart of a charging method for a battery of an earphone according to another embodiment of the present application;
fig. 4 is a block diagram of an earphone battery charging device according to an embodiment of the present invention;
fig. 5 is a block diagram of a wireless headset set according to an embodiment of the present invention;
fig. 6 is a diagram of a charging structure of a left earphone and a right earphone according to an embodiment of the present application.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different 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.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The charging curve of the headset battery, which is generated under the control of the charging management module, is shown in fig. 1. Specifically, the charging of the earphone battery comprises an early first charging mode and a later second charging mode, and in the first charging mode, the charging voltage of the earphone battery (earphone battery voltage) continuously rises; when the charging voltage rises to a certain value, a second charging mode is entered, in the second charging mode, the charging voltage of the earphone battery (earphone battery voltage) is basically kept unchanged, and the charging current is gradually reduced along with the continuation of the charging process according to the saturation degree of the battery core.
In the present application, the output voltage is linearly changed according to the charging voltage of the earphone battery according to the charging curve of the earphone battery.
Fig. 2 is a flowchart illustrating a charging method for an earphone according to the present application.
Specifically, the earphone charging method comprises the following steps:
step S110: an initial output voltage is provided for charging the headset battery.
The initial output voltage is greater than or equal to a first preset voltage, the first preset voltage is greater than or equal to a minimum output voltage required by the earphone battery in a second charging mode, and the earphone charging voltage in the second charging mode is kept constant. Specifically, the first preset voltage may be equal to a minimum output voltage required by the earphone battery in the second charging mode.
As shown in the above-mentioned battery charging curve, when the voltage (charging voltage) of the earphone battery reaches the preset voltage, the charging mode enters the second charging mode from the first charging mode, and in the second charging mode, the charging voltage is kept unchanged, and the charging current is gradually reduced. In an embodiment, when the output voltage is converted into the charging voltage by the charging management module and then connected to the earphone battery, the minimum output voltage in the second charging mode is equal to the preset voltage of the earphone battery + the minimum voltage drop value of the charging management module, that is, the first preset voltage is equal to the preset voltage + the minimum voltage drop value of the charging management module. Specifically, the preset voltage is a rated voltage of the earphone battery, that is, a first preset voltage is the rated voltage of the earphone battery + a minimum voltage drop value of the charge management module. It should be noted that, when the earphone is determined, the minimum voltage drop value of the charging management module (generally, charging IC) in the earphone is determined, and the rated voltage of the battery of the earphone is also determined. For example, in a specific operation, the minimum voltage drop value and the rated voltage value of the charging management module may be written in a control program of the earphone charging device, so as to output the first preset voltage.
In an embodiment, as shown in fig. 4, the earphone charging circuit includes a voltage regulating module 110, a charging management module 210 and an earphone battery 220 connected in sequence, and the input voltage V is connected through the voltage regulating module 110inAnd transforming into an output voltage VoutOutput voltage VoutConverted into charging voltage V by a charging management modulecTo charge the earphone battery, wherein the charging voltage VcI.e. the voltage of the battery of the headset. Taking the preset voltage as the rated constant voltage of the earphone battery as an example, when the charging voltage V iscLower than the rated voltage V of the earphone batteryeWhen the charging is in the first charging mode, when the charging voltage V iscReach the rated voltage V of the earphone batteryeThen, the charging enters a second charging mode, the charging voltage VcKeeping the voltage constant, and maintaining the minimum output voltage V of the earphone battery for charging in the second charging modee+VminWherein V isminIs the minimum voltage drop value of the charge management module. In one embodiment, the rated voltage of the battery of the earphone is 4.2V, the minimum voltage drop value of the charging management module ranges from 0.2V to 0.55V, and specifically, when the minimum voltage drop value of the charging management module is 0.55V, the constant voltage charging of the earphone is maintainedThe minimum output voltage of (4.2V + 0.55V), i.e. the first preset voltage of (4.2V + 0.55V).
Step S130: gradually reducing the current output voltage until the current charging current is less than or equal to a second preset current; and detecting the charging current, and gradually increasing the current output voltage until the current charging current is greater than a second preset current once the current charging current is less than or equal to the second preset current.
The second preset current is greater than or equal to the minimum charging current required by charging, that is, the second preset current can start the charging management module. When the charging management module is selected, the minimum charging current for starting the charging management module and the minimum voltage drop of the charging management module can be determined, and when the output voltage V is selectedoutAnd a charging voltage VcThe voltage difference between the charging current and the charging current is less than the minimum voltage drop value of the charging management module, normal charging cannot be carried out, the charging current drops rapidly, and the charging current is less than or equal to a second preset current value. The output voltage V is lowered at the above step S130outIn the process, the second preset current is taken as a reference value, and the voltage V is outputoutIn the descending process, detecting the charging current, and once the charging current is less than or equal to a second preset current, which indicates that the charging current cannot meet the charging requirement, increasing the output voltage; if the charging current is larger than the second preset current, the current output voltage V is indicatedoutStill too high, the output voltage V still needs to be loweredoutAnd the above process is repeated. Specifically, a specific value of the second preset current may be set according to specific needs, for example, the second preset current may be set to be smaller than 1mA, and of course, other ranges may also be set as long as the second preset current satisfies the above conditions.
Formula P ═ V (according to charging loss)out-Vc) I, wherein I is charging current and output voltage VoutAnd a charging voltage VcThe larger the difference in (b), the larger the charge loss and the lower the charge efficiency. Therefore, the output voltage V needs to be loweredoutTo make the output voltage VoutAnd a charging voltage VcIs greater than or equal to the minimum voltage drop value of the charge management module, i.e., the charging current is enabled to start the charge management moduleThe block is just needed. In the application, during charging, the output voltage is gradually reduced until the current charging current is less than or equal to the second preset current, which indicates that the output voltage is too low and the earphone battery cannot be normally charged, and then the output voltage is increased until the current charging current is greater than the second preset current, so that the charging current is higher than the second preset current. During charging, the charging voltage of the earphone is increased, once the current charging current is less than or equal to the second preset current, the output voltage is increased again until the current charging current is greater than the second preset current, so that the charging current is always greater than the second preset current to meet the charging requirement. In the charging process, the output voltage gradually rises, and the output voltage is linearly charged along with the change of the charging voltage of the earphone battery, so that the charging efficiency is improved, and the charging loss is reduced.
In an embodiment, between step S110 and step S130, the method further includes:
detecting the charging current, and maintaining the output voltage as a first preset voltage for charging when the charging current is less than or equal to the first preset current; and when the charging current is greater than the first preset current, gradually reducing the current output voltage until the current charging current is less than or equal to the second preset current.
The first preset current is a charging current when the earphone battery enters the second charging mode from the first charging mode, and the earphone charging voltage in the first charging mode continuously rises.
Specifically, a step S120 may be added between step S110 and step S130: detecting the charging current, and determining whether the current charging current is less than or equal to a first preset current value, if so, jumping to step S140, and if not, jumping to step S130.
Step S140: the output voltage is maintained to be the first preset voltage for charging.
As described above, the charging current of the battery gradually decreases during the second charging mode, and therefore, the charging current value entering the second charging mode is selected as the first predetermined current, which is actually the first critical value for determining whether to enter the second charging mode, if the current charging current is smaller than the first predetermined currentIf the present voltage of the battery reaches the preset voltage, the method may not execute step S130 and directly enter the second charging mode to maintain the output voltage as the first preset voltage for charging, at this time, the charging voltage V is set to be the first preset voltagecThe charging current is gradually reduced while keeping unchanged. The charging management module has the minimum voltage drop to ensure that the charging can be smoothly carried out, and the output voltage VoutAnd a charging voltage VcThe difference value of (a) is minimum, the charging efficiency is highest, and the charging loss is minimum. When the charging current is greater than the first preset current, which indicates that the earphone battery has not reached the preset voltage, step S130 is executed.
In this embodiment, after the output voltage is set to a larger value, during the charging period, it is first determined whether the current charging current is less than or equal to the charging current (the first predetermined current) when the earphone battery enters the second charging mode, if the current charging current is less than or equal to the first predetermined current, it indicates that the remaining battery capacity of the earphone battery is higher, the voltage of the earphone battery is higher, the earphone battery directly enters the second charging mode after the charging circuit is turned on, at this time, the output voltage is maintained as the first predetermined voltage for charging, and the charging loss can be minimized. If the current charging current is greater than the first preset current, it is indicated that the remaining capacity of the earphone battery is low, the voltage of the earphone battery is low, and the earphone battery cannot enter the second charging mode after the charging path is switched on, at this time, if the current high output voltage is continuously maintained to charge the earphone, the difference between the output voltage and the charging voltage is large, and the charging loss is large, the output voltage needs to be reduced until the current charging current is less than or equal to the second preset current, and then the output voltage is increased until the current charging current is greater than the second preset current, so that the charging current is higher than the second preset current to charge.
In an embodiment, step S130 specifically includes: reducing the current output voltage according to a first preset increment; detecting the charging current, and when the charging current is greater than a second preset current, continuing to reduce the current output voltage according to a first preset increment until the current charging current is less than or equal to the second preset current; and when the charging current is less than or equal to a second preset current, increasing the current output voltage according to a second preset increment until the current charging current is greater than the second preset current. The first preset increment and the second preset increment are values set in advance, and the first preset increment and the second preset increment may be set to be the same value or different values. Specifically, the range of the first preset increment and the second preset increment is 0.1V to 0.5V. It can be understood that the smaller the value of the second preset increment, the more accurate the regulation of the output voltage and the lower the charging loss.
In an embodiment, in the step S130, increasing the present output voltage according to the second preset increment until the present charging current is greater than the second preset current includes: increasing the current output voltage according to a second preset increment, maintaining the output voltage as the first preset voltage for charging when the output voltage is greater than or equal to the first preset voltage, and continuing to increase the current output voltage according to the second preset increment when the output voltage is less than the first preset voltage and the current charging current is less than or equal to the second preset current; the first preset voltage is equal to the minimum output voltage required by the earphone battery in the second charging mode, and the earphone charging voltage in the second charging mode is kept constant.
Specifically, step S130 may include the following sub-steps:
step S131: the present output voltage is reduced by a first preset increment.
Step S132: detecting the charging current, and determining whether the current charging current is less than or equal to a second preset current, if so, jumping to step S133, and if not, jumping to step S131.
Step S133: and increasing the current output voltage by a second preset increment.
Step S134: acquiring the output voltage, determining whether the current output voltage is greater than or equal to a first preset voltage, if so, maintaining the output voltage as the first preset voltage for charging, and if not, skipping to step S135.
Step S135: detecting the charging current, determining whether the current charging current is less than or equal to a second preset current, if so, jumping to step S133, otherwise, maintaining the current output voltage and repeating step S135.
In the above steps, the output voltage is reduced according to a first preset increment, and once the current charging current is less than or equal to a second preset current, the output voltage V is indicatedoutWhen the charging requirement is not met, the output voltage is increased until the current charging current is larger than a second preset current so as to ensure that the charging current and the output voltage V are equaloutAnd the charging requirement is met. During charging, the charging voltage VcGradually increase, and once the current charging current is detected to be less than or equal to the second predetermined current, step S133 is skipped to increase the output voltage VoutUntil the current charging current is larger than the second preset current, so that the charging current is always higher than the second preset current, and during the period, the output voltage VoutFollowing charging voltage VcThe charge efficiency is improved and the charge loss is reduced due to the linear change. Meanwhile, during the period of increasing the output voltage, whether the current output voltage is greater than or equal to a first preset voltage is also judged, if the current output voltage is increased to the rated voltage of the earphone battery, the first charging mode is switched to a second charging mode, and at the moment, the output voltage is maintained to be the first preset voltage for charging, so that normal charging can be ensured, and the charging loss can be reduced to the minimum.
In an embodiment, the initial output voltage is equal to a first preset voltage, for example, equal to a minimum output voltage required by the earphone battery in the second charging mode, and when the earphone battery is in the second charging mode, the minimum output voltage is equal to Ve+VminWhen the initial value of the output voltage is equal to Ve+Vmin. At this time, once it is determined that the earphone battery has entered the second charging mode, the current initial output voltage may be maintained to continue charging.
In an embodiment, the second preset current is equal to a minimum charging current required for charging, and specifically equal to a minimum charging current capable of starting the charging management module, that is, the second preset current is a second critical line that can just start the charging management module to perform charging, so that the charging current is higher than the second critical line to perform charging, that is, a difference between the output voltage and the charging voltage is greater than or equal to a minimum voltage drop value of the charging management module, which can ensure normal charging and further improve charging efficiency.
In one embodiment, when the output voltage is greater than or equal to the first predetermined voltage, maintaining the output voltage as the first predetermined voltage for charging includes: and maintaining the output voltage as the first preset voltage to charge until the current charging current is less than or equal to a third preset current, wherein the third preset current is a charging cut-off current. During the period, the charging current can be detected, whether the current charging current is less than or equal to a third preset current or not is judged, if yes, the charging is finished, and if not, the current is continuously detected, and whether the current charging current is less than or equal to the third preset current or not is judged. The third preset current is a charge cut-off current. In the second charging mode, along with the gradual reduction of the charging current, whether the charging of the earphone battery is finished or not can be judged by comparing the current charging current with the third preset current. After the charging of the earphone is completed, a corresponding prompt can be made to indicate that the battery of the earphone is fully charged.
For a better understanding of the present application, a specific embodiment is described below, wherein, with reference to fig. 3, the charging method comprises:
step S110: an initial output voltage is provided for charging the headset battery.
Step S120: detecting the charging current, and determining whether the current charging current is less than or equal to a first preset current value, if so, skipping to step S140, and if not, skipping to step S131.
Step S131: the present output voltage is reduced by a first preset increment.
Step S132: detecting the charging current, and determining whether the current charging current is less than or equal to a second preset current, if so, jumping to step S133, and if not, jumping to step S131.
Step S133: the present output voltage is raised by a first preset increment.
Step S134: and judging whether the current output voltage is greater than or equal to a first preset voltage, if so, jumping to the step S140, and if not, jumping to the step S135.
Step S135: detecting the charging current, determining whether the current charging current is less than or equal to a second preset current, if so, jumping to step S133, otherwise, maintaining the current output voltage unchanged, and repeating step S135.
Step S140: maintaining the output voltage as the first preset voltage for charging, detecting the charging current, and determining whether the current charging current is less than or equal to the third preset current, if so, completing charging, otherwise, repeating the step S140.
The application also relates to an earphone charging device which is coupled with the earphone and used for executing the earphone charging method.
As shown in fig. 4, the earphone charging device includes a voltage regulating module 110 and a control module 120. The voltage regulating module 110 is used for being sequentially connected with a charging management module 210 in the earphone to form a charging path to charge the earphone battery 220, and the control module 120 is used for collecting the charging current of the charging path and controlling the voltage regulating module 110.
In particular, the voltage regulating module 110 is used to provide an output voltage V to the earphoneoutIn particular, by switching in an input voltage VinAnd is varied to output voltage V according to the control of the control module 120out. The charging management module 210 is connected to the voltage regulating module 110, and is configured to receive the output voltage V generated by the voltage regulating module 110outAnd converted into charging voltage V of earphone batterycCharging the earphone battery 220, that is, the earphone battery 220 is connected to the charging management module 210 for receiving the charging voltage V output by the charging management module 210cAnd charging is carried out, wherein the charging voltage VcAnd is also the actual voltage of the battery of the headset.
The control module 120 is used for controlling the voltage regulating module 110 to generate an initial output voltage V before chargingoutAnd controls the voltage regulating module 110 to gradually decrease the current output voltage V during the charging periodoutUntil the current charging current is less than or equal to a second preset current; and detecting the charging current, and controlling the voltage regulating module to gradually increase the current output voltage V when the current charging current is less than or equal to a second preset currentoutUntil the current charging current is larger than the second preset current. Wherein, the initial output voltage is greater than or equal to a first preset voltage, the first preset voltage is greater than or equal toThe earphone charging voltage in the second charging mode is kept constant at the minimum output voltage required by the earphone battery in the second charging mode.
In one embodiment, the control module 120 gradually decreases the current output voltage V in the control voltage regulation module 110outBefore, the voltage regulating module 110 is also used for controlling the output voltage V set when the charging current is less than or equal to the first preset currentoutCharging the first preset voltage, and controlling the voltage regulating module 110 to gradually decrease the current output voltage V when the charging current is greater than the first preset currentout(ii) a The first preset current is a charging current when the earphone battery enters the second charging mode from the first charging mode, and the earphone charging voltage in the first charging mode continuously rises.
In one embodiment, the control module 120 controls the voltage regulating module 110 to gradually increase the current output voltage VoutUntil the present charging current is greater than a second preset current, including: the control module 120 controls the voltage regulating module 110 to increase the current output voltage V according to a second preset incrementoutWhen the output voltage V isoutWhen the voltage is greater than or equal to the first preset voltage, the voltage regulating module 110 is controlled to maintain the output voltage VoutCharging the first preset voltage when the output voltage V isoutWhen the current charging current is less than or equal to the second preset current and less than the first preset voltage, the voltage regulating module 110 is continuously controlled to increase the current output voltage V according to the second preset incrementout. In this embodiment, the current output voltage is determined to be greater than or equal to the first preset voltage, and if so, it is determined that the second charging mode has been entered currently, so that the output voltage is adjusted to the first preset voltage for constant voltage charging, thereby reducing the charging loss.
In an embodiment, the control module 120 controls the voltage regulating module 110 to maintain the output voltage as the first preset voltage for charging, specifically, controls the voltage regulating module 110 to maintain the output voltage as the first preset voltage for charging until the current charging current is less than or equal to a third preset current, which is a charging cut-off current, to complete charging. It can be understood that, during this period, the control module 120 needs to detect the charging current in real time and compare the charging current with the third preset current to determine whether the current charging current is less than or equal to the third preset current. In this embodiment, by comparing the current charging current with the third preset current, it can be determined whether the charging of the earphone battery is completed. After the charging of the earphone is completed, a corresponding prompt can be made to indicate that the battery of the earphone is fully charged.
The application also relates to a wireless headset set, which comprises the headset charging device.
In one embodiment, as shown in fig. 5, the wireless headset set includes a headset charging device 100 and a headset 200, and specifically, the headset charging device 100 may be a charging box, and the headset 200 may be accommodated in the charging box. The earphone charging device 100 is the earphone charging device 100 described above, and includes the voltage regulating module 110 and the control module 120, and the earphone 200 includes the charging management module. It is understood that the earphone 200 further includes the earphone battery 220, and when the earphone 200 is placed in the charging box, the voltage regulating module 110 is electrically connected to the charging management module 210, so that the earphone battery 220 can be charged.
In one embodiment, the charging box 100 may further include a charging box battery therein, and the voltage regulating module 110 is connected to the charging box battery to obtain the input voltage V from the charging box batteryinAnd is regulated to the required output voltage Vout。
Further, as shown in fig. 6, the headset includes a left headset L and a right headset R, and a charging management module 210 and a headset battery 220 connected to each other are disposed in both the left headset L and the right headset R. In one embodiment, the charging management modules 210 in the left earphone L and the right earphone R are connected to the same voltage regulating module 110 to obtain the output voltage of the charging box 100 and to perform synchronous charging. In another embodiment, two voltage regulating modules can be arranged in the charging box to be respectively connected with the left earphone and the right earphone, and the control module respectively collects the charging current of the left earphone and the charging current of the right earphone and respectively controls the two voltage regulating modules so as to realize the independent charging of the two earphones.
According to the earphone charging method, the earphone charging device and the wireless earphone set, the output voltage is set to be a larger value, the output voltage is gradually reduced in the charging period until the current charging current is smaller than or equal to the second preset current, which indicates that the output voltage is too low and the earphone battery cannot be normally charged, and then the output voltage is increased until the current charging current is larger than the second preset current, so that the charging current is higher than the second preset current. During charging, the charging voltage of the earphone is increased, once the current charging current is less than or equal to the second preset current, the output voltage is increased again until the current charging current is greater than the second preset current, so that the charging current is always greater than the second preset current to meet the charging requirement. In the charging process, the output voltage gradually rises, and the output voltage is linearly charged along with the change of the charging voltage of the earphone battery, so that the charging efficiency is improved, and the charging loss is reduced.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A method of charging an earphone, comprising: providing an initial output voltage for charging the earphone battery, and detecting a charging current; gradually reducing the current output voltage until the current charging current is less than or equal to a second preset current; when the charging current is less than or equal to a second preset current, gradually increasing the current output voltage until the current charging current is greater than the second preset current;
the initial output voltage is greater than or equal to a first preset voltage, the first preset voltage is greater than or equal to a minimum output voltage required by the earphone battery in a second charging mode, and the earphone charging voltage in the second charging mode is kept constant.
2. The headset charging method of claim 1, further comprising, before gradually decreasing the present output voltage:
detecting the charging current, and maintaining the output voltage as a first preset voltage for charging when the charging current is less than or equal to the first preset current; when the charging current is larger than the first preset current, gradually reducing the current output voltage until the current charging current is smaller than or equal to the second preset current; the first preset current is a charging current when the earphone battery enters a second charging mode from a first charging mode, and the earphone charging voltage in the first charging mode continuously rises.
3. The method of claim 1, wherein the detecting the charging current gradually reduces the current output voltage until the current charging current is less than or equal to a second predetermined current; when the present charging current is less than or equal to the second preset current, gradually increase the present output voltage until the present charging current is greater than the second preset current, including:
reducing the current output voltage according to a first preset increment;
detecting the charging current, and when the charging current is greater than a second preset current, continuing to reduce the current output voltage according to a first preset increment until the current charging current is less than or equal to the second preset current; and when the charging current is less than or equal to a second preset current, increasing the current output voltage according to a second preset increment until the current charging current is greater than the second preset current.
4. The method of claim 3, wherein the step of increasing the present output voltage by a second predetermined increment until the present charging current is greater than a second predetermined current comprises:
and increasing the current output voltage according to a second preset increment, maintaining the output voltage as the first preset voltage for charging when the output voltage is greater than or equal to the first preset voltage, and continuing to increase the current output voltage according to the second preset increment when the output voltage is less than the first preset voltage and the current charging current is less than or equal to the second preset current.
5. The headset charging method of claim 3,
the first preset increment is equal to the second preset increment, and the range of the first preset increment and the second preset increment is 0.1V-0.5V.
6. The headset charging method of claim 1, wherein the initial output voltage is equal to a first preset voltage, the first preset voltage is equal to a sum of a rated voltage of a headset battery and a minimum voltage drop of the charge management module, and the second preset current is equal to a minimum charging current required for charging.
7. An earphone charging device for coupling with an earphone and charging an earphone battery, comprising:
the voltage regulating module is used for providing output voltage for the earphone;
the control module is used for controlling the voltage regulating module to generate initial output voltage before charging and controlling the voltage regulating module to gradually reduce the current output voltage until the current charging current is less than or equal to a second preset current during charging; the voltage regulating module is used for detecting the charging current, and controlling the voltage regulating module to gradually increase the current output voltage until the current charging current is greater than the second preset current if the current charging current is less than or equal to the second preset current; the initial output voltage is greater than or equal to a first preset voltage, the first preset voltage is greater than or equal to a minimum output voltage required by the earphone battery in a second charging mode, and the earphone charging voltage in the second charging mode is kept constant.
8. The earphone charging device according to claim 7, wherein the control module, before controlling the voltage regulating module to gradually decrease the current output voltage, is further configured to control the voltage regulating module to maintain the output voltage at the first preset voltage for charging when the charging current is less than or equal to the first preset current, and to gradually decrease the current output voltage when the charging current is greater than the first preset current; the first preset current is a charging current when the earphone battery enters a second charging mode from a first charging mode, and the earphone charging voltage in the first charging mode continuously rises.
9. The apparatus for charging a headset according to claim 8, wherein the controlling module controls the voltage regulating module to gradually increase the present output voltage until the present charging current is greater than a second preset current, comprising: the control module controls the voltage regulating module to increase the current output voltage according to a second preset increment, when the output voltage is greater than or equal to the first preset voltage, the voltage regulating module is controlled to maintain the output voltage as the first preset voltage for charging, and when the output voltage is less than the first preset voltage and the current charging current is less than or equal to the second preset current, the voltage regulating module is continuously controlled to increase the current output voltage according to the second preset increment.
10. A wireless headset kit, comprising:
a headset charging device according to any one of claims 7-9;
the earphone comprises a charging management module and an earphone battery, wherein the charging management module is used for acquiring the output voltage and converting the output voltage into a charging voltage to charge the earphone battery.
CN201911425477.3A 2019-12-31 Earphone charging method, earphone charging device and wireless earphone set CN113131547B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911425477.3A CN113131547B (en) 2019-12-31 Earphone charging method, earphone charging device and wireless earphone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911425477.3A CN113131547B (en) 2019-12-31 Earphone charging method, earphone charging device and wireless earphone set

Publications (2)

Publication Number Publication Date
CN113131547A true CN113131547A (en) 2021-07-16
CN113131547B CN113131547B (en) 2024-05-03

Family

ID=

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108134424A (en) * 2018-01-03 2018-06-08 上海传英信息技术有限公司 The method and charging equipment for mobile phone of charging current are controlled in a kind of mobile phone charging process
CN109768606A (en) * 2019-03-27 2019-05-17 上海爻火微电子有限公司 Earphone charging circuit and earphone charging box
CN110311434A (en) * 2019-05-07 2019-10-08 美律电子(深圳)有限公司 Earphone charging system and earphone charging method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108134424A (en) * 2018-01-03 2018-06-08 上海传英信息技术有限公司 The method and charging equipment for mobile phone of charging current are controlled in a kind of mobile phone charging process
CN109768606A (en) * 2019-03-27 2019-05-17 上海爻火微电子有限公司 Earphone charging circuit and earphone charging box
CN110311434A (en) * 2019-05-07 2019-10-08 美律电子(深圳)有限公司 Earphone charging system and earphone charging method

Similar Documents

Publication Publication Date Title
WO2020063056A1 (en) Wireless charging method, electronic device, wireless charging apparatus and wireless charging system
CN104600796B (en) The mobile terminal and method of quick charge, system
EP2528186B1 (en) Management device for charging circuit and wireless terminal
CN101630762B (en) Method and device for charging battery
JP3926699B2 (en) Secondary battery charging device and charging method thereof
JP2007097397A (en) Constant current/constant voltage charging method and constant current/constant voltage charging device
US10355492B2 (en) Rechargeable battery controller
WO2009137995A1 (en) Battery charge device and control method thereof
US20130113416A1 (en) Charge/discharge controlling apparatus and charge/discharge controlling system
CN113675920B (en) Load line loss compensation method and device for linear charging
CN103560556A (en) Charging method with charging currents selected in gears and mobile terminal thereof
WO2017128619A1 (en) Device, apparatus, and method supporting multi-battery quick-charging
US20210152005A1 (en) Charging apparatus, charging system and charging control method
CN106887900A (en) Power transfer circuitry and power transmission method
CN110518669A (en) A kind of charging system and method, terminal device for handheld device
CN107171384A (en) The charge control method and device of battery
JP2007259632A (en) Charging circuit and charging control method
CN113131547B (en) Earphone charging method, earphone charging device and wireless earphone set
CN113131547A (en) Earphone charging method, earphone charging device and wireless earphone set
KR20070049315A (en) Mobile telecommunication terminal having battery charging apparatus for setting charge current and method for charging thereof
CN105490344A (en) Charging current control method and control system of electromobile
CN110138024A (en) Battery charge controller, charging system and charge control method
CN109525007A (en) Power-supply controller of electric, power supply system and its control method
CN107565644B (en) Method and device for adjusting output voltage of vehicle-mounted charger and electric vehicle
CN116073488B (en) Method, circuit and device for carrying out minimum differential pressure charging on intelligent wearable equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination