CN113131547B - Earphone charging method, earphone charging device and wireless earphone set - Google Patents
Earphone charging method, earphone charging device and wireless earphone set Download PDFInfo
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- CN113131547B CN113131547B CN201911425477.3A CN201911425477A CN113131547B CN 113131547 B CN113131547 B CN 113131547B CN 201911425477 A CN201911425477 A CN 201911425477A CN 113131547 B CN113131547 B CN 113131547B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims description 45
- 230000001276 controlling effect Effects 0.000 claims description 12
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- 230000033228 biological regulation Effects 0.000 claims description 4
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- 238000010280 constant potential charging Methods 0.000 description 2
- 210000000959 ear middle Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
Classifications
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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
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- 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
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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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 charging current, and gradually increasing the current output voltage until the current charging current is larger than the second preset current when the current charging current is smaller 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
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 technology, wireless wearable equipment technology is mature, and wireless headphones, particularly TWS true wireless Bluetooth headphones, are more and more favored by people due to the convenience in carrying and wearing compared with traditional wired headphones, and are more and more popular. The wireless earphone is internally provided with an earphone battery for providing electric quantity for earphone work. When the electric quantity of the earphone battery is consumed, the voltage is output by the charging device to charge the earphone battery. Since the voltage of the earphone battery is changed in real time during charging, in an ideal state, when the output voltage of the charging device is changed linearly along with the voltage of the earphone battery, the charging efficiency is highest and the charging loss is smallest. However, the output voltage provided by the current charging device is generally a fixed voltage, and when the output voltage provided by the power supply device is greatly different from the voltage of the earphone battery, the charging efficiency is low and the charging loss is large.
Disclosure of Invention
Based on the above, 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 method of earphone charging, 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 smaller than or equal to a second preset current, gradually increasing the current output voltage until the current charging current is larger 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 current output voltage, the method further comprises:
Detecting a charging current, and when the charging current is smaller than or equal to a first preset current, maintaining the output voltage to be the first preset voltage for charging; 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 decreases the current output voltage until the current charging current is less than or equal to a second preset current; when the current charging current is smaller than or equal to a second preset current, gradually increasing the current output voltage until the current charging current is larger than the second preset current, including:
Reducing the current output voltage according to a first preset increment;
detecting charging current, and when the charging current is larger than second preset current, continuously reducing the current output voltage according to the first preset increment until the current charging current is smaller than or equal to the second preset current; and when the charging current is smaller than or equal to the second preset current, the current output voltage is increased according to the second preset increment until the current charging current is larger than the second preset current.
In one embodiment, the step of increasing the present output voltage by a second preset increment until the present charging current is greater than the second preset current includes:
And increasing the current output voltage according to the second preset increment, when the output voltage is larger than or equal to the first preset voltage, maintaining the output voltage to be the first preset voltage for charging, and when the output voltage is smaller than the first preset voltage and the current charging current is smaller than or equal to the second preset current, continuously increasing the current output voltage according to the second preset increment.
In one embodiment, 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.
In one embodiment, 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 the earphone battery and a minimum voltage drop of the charging management module, and the second preset current is equal to a minimum charging current required for 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 during charging until the current charging current is smaller than or equal to a second preset current; the current charging module is used for detecting charging current, and controlling the voltage regulating module to gradually increase the current output voltage until the current charging current is larger than the second preset current if the current charging current is smaller 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 the control module controls the voltage regulating module to gradually reduce the current output voltage, the control module is further configured to control the voltage regulating module to maintain the output voltage to be 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 reduce 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 control module controls the voltage regulating module to gradually increase the current output voltage until the current charging current is greater than the second preset current, including: the control module controls the voltage regulating module to increase the current output voltage according to the second preset increment, when the output voltage is larger than or equal to the first preset voltage, the control module controls the voltage regulating module to maintain the output voltage to be the first preset voltage for charging, and when the output voltage is smaller than the first preset voltage and the current charging current is smaller than or equal to the second preset current, the control module continues to control the voltage regulating module to increase the current output voltage according to the second preset increment.
A wireless headset kit, comprising:
a headset charging device, the headset charging device being any one of the headset 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 so as 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 firstly set, 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, the fact that the output voltage is too low indicates that the earphone battery cannot be charged normally is achieved, 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, and once the current charging current is smaller than or equal to the second preset current, the output voltage is increased again until the current charging current is larger than the second preset current, so that the charging current is always larger than the second preset current, and the charging requirement is met. In the charging process, the output voltage gradually rises, so that the output voltage is linearly charged along with the change of the charging voltage of the earphone battery, the charging efficiency is improved, and the charging loss is reduced.
Drawings
FIG. 1 is a plot of earphone battery charge;
FIG. 2 is a flow chart of a method of charging a battery in a middle ear according to an embodiment of the application;
FIG. 3 is a flow chart of a method of charging a battery in a middle ear according to another embodiment of the present application;
fig. 4 is a block diagram of a battery charging device for a middle-sized battery according to an embodiment of the present application;
FIG. 5 is a block diagram of a wireless headset according to an embodiment of the present application;
Fig. 6 is a diagram illustrating a relationship between charging structures of a left earphone and a right earphone according to an embodiment of the present application.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended 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 herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The charging curve of the earphone battery is shown in fig. 1, and is generated under the control of the charging management module. Specifically, the earphone battery charging includes a first charging mode in the early stage and a second charging mode in the later stage, in which 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 which the charging voltage of the earphone battery (earphone battery voltage) is kept basically unchanged, and the charging current gradually decreases with the continuation of the charging process according to the saturation degree of the battery cell.
In the application, according to the charging curve of the earphone battery, the output voltage is linearly changed according to the charging voltage of the earphone battery.
A flow chart of a method of charging a tympanic membrane in accordance with the present application is shown in fig. 2.
Specifically, the earphone charging method includes:
step S110: an initial output voltage is provided to charge the earphone 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 battery charging curve, when the voltage (charging voltage) of the earphone battery reaches the preset voltage, the charging mode is changed from the first charging mode to the second charging mode, and in the second charging mode, the charging voltage remains unchanged and the charging current gradually decreases. In an embodiment, when the output voltage is converted into the charging voltage by the charging management module and then is connected to the earphone battery, the minimum output voltage in the second charging mode is equal to the preset voltage of the earphone battery and the minimum voltage drop value of the charging management module, that is, the first preset voltage=the preset voltage and the minimum voltage drop value of the charging management module. Specifically, the preset voltage is a rated voltage of the earphone battery, that is, the first preset voltage=the rated voltage of the earphone battery+the minimum voltage drop value of the charge management module. It should be noted that, when the headset is determined, a minimum voltage drop value of the in-headset charging management module (typically, the charging IC) is determined, and a rated voltage of the headset battery is also determined. For example, in a specific operation, the minimum voltage drop value and the rated voltage value of the charge management module may be written into 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, an input voltage V in is connected to the voltage regulating module 110 and transformed into an output voltage V out, and the output voltage V out is converted into a charging voltage V c by the charging management module to charge the earphone battery, where the charging voltage V c is the voltage of the earphone battery. Taking the preset voltage as the rated constant voltage of the earphone battery as an example, when the charging voltage V c is lower than the rated voltage V e of the earphone battery, the charging is in the first charging mode, when the charging voltage V c reaches the rated voltage V e of the earphone battery, the charging enters the second charging mode, the charging voltage V c is kept unchanged, and at the moment, the minimum output voltage=V e+Vmin of the earphone battery for charging in the second charging mode is maintained, wherein V min is the minimum voltage drop value of the charging management module. In an embodiment, the rated voltage of the earphone battery 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 minimum output voltage=4.2v+0.55v of constant voltage charging of the earphone is maintained, i.e. the first preset voltage=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; detecting the charging current, and once the current charging current is smaller than or equal to a second preset current, gradually increasing the current output voltage until the current charging current is larger than the second preset current.
The second preset current is greater than or equal to the minimum charging current required for charging, that is, the second preset current can start the charging management module. When the charging management module is selected, the minimum charging current of the charging management module and the minimum voltage drop of the charging management module can be determined, and when the voltage difference between the output voltage V out and the charging voltage V c is smaller than the minimum voltage drop value of the charging management module, normal charging cannot be performed, the charging current drops sharply, and at the moment, the charging current is smaller than or equal to a second preset current value. In the process of reducing the output voltage V out in the step S130, the second preset current is taken as a reference value, and in the process of reducing the output voltage V out, the charging current is detected, and once the charging current is smaller than or equal to the second preset current, it is indicated that the charging current cannot meet the charging requirement, and the output voltage needs to be raised; if the charging current is greater than the second preset current, it indicates that the current output voltage V out is still too high, and the output voltage V out still needs to be continuously reduced, and the above procedure is repeated. Specifically, the 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 less than 1mA, and of course, may be set in other ranges, as long as the second preset current satisfies the above condition.
According to the formula p= (V out-Vc) I of the charging loss, where I is the charging current, the larger the difference between the output voltage V out and the charging voltage V c, the larger the charging loss, and the lower the charging efficiency. Therefore, the output voltage V out needs to be reduced, so that the difference between the output voltage V out and the charging voltage V c is greater than or equal to the minimum voltage drop value of the charging management module, that is, the charging current can start the charging management module. In the application, 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, the earphone battery cannot be charged normally, 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, and once the current charging current is smaller than or equal to the second preset current, the output voltage is increased again until the current charging current is larger than the second preset current, so that the charging current is always larger than the second preset current, and the charging requirement is met. In the charging process, the output voltage gradually rises, so that the output voltage is linearly charged along with the change of the charging voltage of the earphone battery, the charging efficiency is improved, and the charging loss is reduced.
In an embodiment, between step S110 and step S130, further includes:
Detecting a charging current, and when the charging current is smaller than or equal to a first preset current, maintaining the output voltage to be the first preset voltage for charging; when the charging current is larger than the first preset current, the current output voltage is gradually reduced 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 charging voltage of the earphone in the first charging mode continuously rises.
Specifically, step S120 may be added between step S110 and step S130: detecting the charging current, judging whether the current charging current is smaller than or equal to a first preset current value, if yes, jumping to step S140, and if no, jumping to step S130.
Step S140: and maintaining the output voltage 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 preset current, the first preset current is actually the first threshold for determining whether to enter the second charging mode, if the current charging current is smaller than the first preset current, which indicates that the current voltage of the battery has reached the preset voltage, the battery can directly enter the second charging mode without executing step S130, and the output voltage is maintained to be the first preset voltage for charging, at this time, the charging voltage V c remains unchanged, and the charging current gradually decreases. The charging management module has minimum voltage drop to ensure that charging can be smoothly performed, the difference between the output voltage V out and the charging voltage V c is minimum, the charging efficiency is highest, and the charging loss is minimum. When the charging current is greater than the first preset current, it indicates that the earphone battery has not reached the preset voltage, and step S130 is performed.
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 smaller than or equal to the charging current (the first preset current) when the earphone battery enters the second charging mode, if the current charging current is smaller than or equal to the first preset current, this indicates that the remaining power of the earphone battery is higher, the voltage is higher, and the second charging mode is directly entered after the charging circuit is turned on, at this time, only the output voltage is maintained to be the first preset voltage for charging, and the charging loss can be reduced to the minimum. If the current charging current is larger than the first preset current, the remaining capacity of the earphone battery is lower, the voltage is lower, the earphone battery cannot enter the second charging mode after being connected with the charging passage, at the moment, if the current higher output voltage is continuously maintained to charge the earphone, the difference value between the output voltage and the charging voltage is larger, the output voltage is required to be reduced until the current charging current is smaller than or equal to the second preset current, 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 for charging.
In one embodiment, the step S130 specifically includes: reducing the current output voltage according to a first preset increment; detecting charging current, and when the charging current is larger than second preset current, continuously reducing the current output voltage according to the first preset increment until the current charging current is smaller than or equal to the second preset current; and when the charging current is smaller than or equal to the second preset current, the current output voltage is increased according to the second preset increment until the current charging current is larger than the second preset current. The first preset increment and the second preset increment are preset values in advance, and the first preset increment and the second preset increment can be set to the same value or different values, and in the embodiment, the first preset increment is equal to the second preset increment. Specifically, the range of the first preset increment and the second preset increment is 0.1V-0.5V. It can be understood that the smaller the value of the second preset increment is, the more accurate the regulation of the output voltage is, and the lower the charging loss is.
In an embodiment, in the step S130, the step of increasing the current output voltage by a second preset increment until the current charging current is greater than the second preset current includes: the current output voltage is increased according to the second preset increment, when the output voltage is larger than or equal to the first preset voltage, the output voltage is maintained to be charged for the first preset voltage, and when the output voltage is smaller than the first preset voltage and the current charging current is smaller than or equal to the second preset current, the current output voltage is continuously increased according to the second preset increment; 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 current output voltage is reduced by a first preset increment.
Step S132: detecting the charging current, judging whether the current charging current is smaller than or equal to a second preset current, if yes, jumping to step S133, otherwise jumping to step S131.
Step S133: and increasing the current output voltage by a second preset increment.
Step S134: and obtaining the output voltage, judging whether the current output voltage is larger than or equal to a first preset voltage, if so, maintaining the output voltage to be the first preset voltage for charging, and if not, jumping to step S135.
Step S135: detecting the charging current, judging whether the current charging current is smaller than or equal to a second preset current, if yes, jumping to the step S133, if not, maintaining the current output voltage, and repeating the step S135.
In the above steps, the output voltage is reduced according to the first preset increment, and once the current charging current is smaller than or equal to the second preset current, the output voltage V out is indicated to have failed the charging requirement, and at this time, the output voltage is raised until the current charging current is larger than the second preset current, so that the charging current and the output voltage V out meet the charging requirement. In the charging process, the charging voltage V c gradually increases, and once the current charging current is detected to be less than or equal to the second preset current, the process jumps to step S133 to increase the output voltage V out until the current charging current is greater than the second preset current, so that the charging current is always higher than the second preset current, and during this period, the output voltage V out changes linearly along with the charging voltage V c, thereby improving the charging efficiency and reducing the charging loss. Meanwhile, during the period of increasing the output voltage, whether the current output voltage is larger than or equal to a first preset voltage is also judged, if so, after the current output voltage is increased to the rated voltage of the earphone battery, the first charging mode is switched into the 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 minimum output voltage required by the earphone battery in the second charging mode=v e+Vmin, the initial value of the output voltage=v e+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 by 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 which can just start the charging management module to charge, so that the charging current is higher than the second critical line to charge, that is, the 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, normal charging can be ensured, and charging efficiency can be further improved.
In one embodiment, when the output voltage is greater than or equal to the first preset voltage, maintaining the output voltage at the first preset voltage for charging includes: and maintaining the output voltage to be the first preset voltage for charging until the current charging current is smaller than or equal to the third preset current, wherein the third preset current is the charging cut-off current. During the period, the charging current can be detected, whether the current charging current is smaller than or equal to the third preset current is judged, if yes, charging is completed, and if not, the current is continuously detected, and whether the current charging current is smaller than or equal to the third preset current is judged. The third preset current is a charging cut-off current. In the second charging mode, as the charging current gradually decreases, it may be determined whether the earphone battery is completely charged by comparing the current charging current with a third preset current. When the earphone is charged, a corresponding prompt can be made to indicate that the earphone battery is fully charged.
For a better understanding of the present application, a specific embodiment is described below, wherein, referring to fig. 3, the charging method includes:
step S110: an initial output voltage is provided to charge the earphone battery.
Step S120: detecting the charging current, judging whether the current charging current is smaller than or equal to a first preset current value, if yes, jumping to step S140, and if no, jumping to step S131.
Step S131: the current output voltage is reduced by a first preset increment.
Step S132: detecting the charging current, judging whether the current charging current is smaller than or equal to a second preset current, if yes, jumping to step S133, otherwise jumping to step S131.
Step S133: the current 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, judging whether the current charging current is smaller than or equal to a second preset current, if yes, jumping to the step S133, otherwise, maintaining the current output voltage unchanged, and repeating the step S135.
Step S140: and maintaining the output voltage to be the first preset voltage for charging, detecting the charging current, judging whether the current charging current is smaller than or equal to the third preset current, if so, completing charging, and if not, repeating the step S140.
The application also relates to a headset charging device, which is coupled with the headset and is used for executing the headset 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 configured to be sequentially connected with the charging management module 210 in the headset to form a charging path to charge the headset battery 220, and the control module 120 is configured to collect a charging current of the charging path and control the voltage regulating module 110.
Specifically, the voltage regulating module 110 is configured to provide the output voltage V out to the earphone, specifically, access the input voltage V in and transform the input voltage into the output voltage V out according to the control of the control module 120. The charging management module 210 is connected to the voltage regulation module 110, and is configured to receive the output voltage V out generated by the voltage regulation module 110 and convert the output voltage V out into the charging voltage V c of the earphone battery to charge the earphone battery 220, that is, the earphone battery 220 is connected to the charging management module 210, and is configured to receive the charging voltage V c output by the charging management module 210 and perform charging, where the charging voltage V c is also the actual voltage of the earphone battery.
The control module 120 is configured to control the voltage regulating module 110 to generate an initial output voltage V out before charging and control the voltage regulating module 110 to gradually decrease the current output voltage V out during charging until the current charging current is less than or equal to a second preset current; and detecting the charging current, wherein the current charging current is smaller than or equal to a second preset current, and then controlling the voltage regulating module to gradually increase the current output voltage V out until the current charging current is larger 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 an embodiment, before the voltage regulating module 110 is controlled to gradually decrease the current output voltage V out, the control module 120 is further configured to control the voltage regulating module 110 to set the output voltage V out to be 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 110 to gradually decrease the current output voltage V out 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 charging voltage of the earphone in the first charging mode continuously rises.
In an embodiment, the control module 120 controls the voltage regulating module 110 to gradually increase the current output voltage V out until the current charging current is greater than the second preset current, including: the control module 120 controls the voltage regulating module 110 to increase the current output voltage V out according to the second preset increment, when the output voltage V out is greater than or equal to the first preset voltage, the voltage regulating module 110 is controlled to maintain the output voltage V out to be the first preset voltage for charging, and when the output voltage V out 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 110 is controlled to continuously increase the current output voltage V out according to the second preset increment. In this embodiment, whether the current output voltage is greater than or equal to the first preset voltage is determined, if yes, it is indicated that the second charging mode has been entered currently, and therefore, the output voltage is adjusted to the first preset voltage to perform constant voltage charging, so as to reduce charging loss.
In an embodiment, the control module 120 controls the voltage regulating module 110 to maintain the output voltage at the first preset voltage for charging, specifically, controls the voltage regulating module 110 to maintain the output voltage at the first preset voltage for charging until the current charging current is less than or equal to the third preset current, where the third preset current is a charging cut-off current. It can be appreciated 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 present 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 headphone battery is completely charged. When the earphone is charged, a corresponding prompt can be made to indicate that the earphone battery is fully charged.
The application also relates to a wireless earphone set which comprises the earphone charging device.
In an embodiment, as shown in fig. 5, the wireless headset includes a headset charging device 100 and a headset 200, and in particular, 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 can be appreciated that the earphone battery 220 is further included in the earphone 200, 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 an embodiment, the charging box 100 may further include a charging box battery, and the voltage regulating module 110 is connected to the charging box battery to obtain the input voltage V in from the charging box battery and regulate the voltage to the required output voltage V out.
Further, as shown in fig. 6, the headset includes a left headset L and a right headset R, in which a charging management module 210 and a headset battery 220 are connected. 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 charge synchronously. In another embodiment, two voltage regulating modules can be arranged in the charging box to be connected with the left earphone and the right earphone respectively, and the control module is used for collecting the charging current of the left earphone and the charging current of the right earphone respectively and controlling the two voltage regulating modules respectively so as to realize 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, the fact that the output voltage is too low indicates that the earphone battery cannot be charged normally is achieved, 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, and once the current charging current is smaller than or equal to the second preset current, the output voltage is increased again until the current charging current is larger than the second preset current, so that the charging current is always larger than the second preset current, and the charging requirement is met. In the charging process, the output voltage gradually rises, so that the output voltage is linearly charged along with the change of the charging voltage of the earphone battery, the charging efficiency is improved, and the charging loss is reduced.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. A method of charging headphones, 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 smaller than or equal to a second preset current, gradually increasing the current output voltage until the current charging current is larger than the second preset current, wherein the second preset current is equal to the minimum charging current required by charging;
the initial output voltage is larger than or equal to a first preset voltage, the first preset voltage is larger 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;
before gradually decreasing the current output voltage, further comprising:
Detecting a charging current, and when the charging current is smaller than or equal to a first preset current, maintaining the output voltage to be the first preset voltage for charging; 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.
2. The method for charging an earphone according to claim 1, wherein the detecting the charging current gradually decreases the current output voltage until the current charging current is less than or equal to a second preset current; when the current charging current is smaller than or equal to a second preset current, gradually increasing the current output voltage until the current charging current is larger than the second preset current, including:
Reducing the current output voltage according to a first preset increment;
detecting charging current, and when the charging current is larger than second preset current, continuously reducing the current output voltage according to the first preset increment until the current charging current is smaller than or equal to the second preset current; and when the charging current is smaller than or equal to the second preset current, the current output voltage is increased according to the second preset increment until the current charging current is larger than the second preset current.
3. The method of charging headphones as recited in claim 2, wherein the increasing the present output voltage by the second preset increment until the present charging current is greater than the second preset current comprises:
And increasing the current output voltage according to the second preset increment, when the output voltage is larger than or equal to the first preset voltage, maintaining the output voltage to be the first preset voltage for charging, and when the output voltage is smaller than the first preset voltage and the current charging current is smaller than or equal to the second preset current, continuously increasing the current output voltage according to the second preset increment.
4. The method for charging headphones as recited in claim 2,
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.
5. The method of charging a headset of claim 1, wherein the initial output voltage is equal to a first preset voltage that is equal to a sum of a rated voltage of a headset battery and a minimum voltage drop of a charge management module.
6. 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 during charging until the current charging current is smaller than or equal to a second preset current; the current charging module is used for detecting charging current, and controlling the voltage regulating module to gradually increase the current output voltage until the current charging current is larger than the second preset current if the current charging current is smaller than or equal to the second preset current; the initial output voltage is larger than or equal to a first preset voltage, the first preset voltage is larger than or equal to a minimum output voltage required by the earphone battery in a second charging mode, the earphone charging voltage in the second charging mode is kept constant, and the second preset current is equal to a minimum charging current required by charging;
the control module is further used for controlling the voltage regulating module to maintain the output voltage to be the first preset voltage for charging when the charging current is smaller than or equal to the first preset current before controlling the voltage regulating module to gradually reduce the current output voltage, and controlling the voltage regulating module to gradually reduce the current output voltage when the charging current is larger 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.
7. The headset charging device of claim 6 wherein the control module controlling the voltage regulation module to gradually increase the present output voltage until the present charging current is greater than the second preset current comprises: the control module controls the voltage regulating module to increase the current output voltage according to the second preset increment, when the output voltage is larger than or equal to the first preset voltage, the control module controls the voltage regulating module to maintain the output voltage to be the first preset voltage for charging, and when the output voltage is smaller than the first preset voltage and the current charging current is smaller than or equal to the second preset current, the control module continues to control the voltage regulating module to increase the current output voltage according to the second preset increment.
8. A wireless headset kit, comprising:
A headphone charging apparatus as claimed in claim 6 or 7;
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 so as to charge the earphone battery.
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| CN201911425477.3A CN113131547B (en) | 2019-12-31 | 2019-12-31 | Earphone charging method, earphone charging device and wireless earphone set |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Patent Citations (3)
| 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 |
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