CN113451661A - Earphone set - Google Patents

Earphone set Download PDF

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Publication number
CN113451661A
CN113451661A CN202110714216.4A CN202110714216A CN113451661A CN 113451661 A CN113451661 A CN 113451661A CN 202110714216 A CN202110714216 A CN 202110714216A CN 113451661 A CN113451661 A CN 113451661A
Authority
CN
China
Prior art keywords
battery
wound
wound battery
power supply
supply assembly
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.)
Pending
Application number
CN202110714216.4A
Other languages
Chinese (zh)
Inventor
刘立国
王芬清
龚加庆
骆俊谕
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.)
Goertek Techology Co Ltd
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Goertek Techology 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 Goertek Techology Co Ltd filed Critical Goertek Techology Co Ltd
Priority to CN202110714216.4A priority Critical patent/CN113451661A/en
Publication of CN113451661A publication Critical patent/CN113451661A/en
Pending legal-status Critical Current

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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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0422—Cells or battery with cylindrical casing
    • H01M10/0427—Button cells
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • 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
    • H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Materials Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application discloses an earphone which comprises a sound generating device and a power supply assembly; the power supply assembly comprises a first wound battery and a second wound battery which are arranged in a stacked mode, winding center lines of the first wound battery and the second wound battery are overlapped, and current directions of the first wound battery and the second wound battery are opposite when the power supply assembly works. The magnetic field between the first winding type battery and the second winding type battery in the earphone is mutually offset, and the magnetic field interference of the battery to the sound production device is reduced.

Description

Earphone set
Technical Field
The application relates to the technical field of earphone manufacturing, in particular to an earphone.
Background
Along with the development of earphone technology, the function of earphone is more and more abundant, and integrated components and parts are more and more on the earphone. Meanwhile, in order to improve wearing comfort and beauty, the structural space of the earphone is more and more limited, which enables modules with different functions inside the earphone to be tightly combined together.
The mode of piling up of present earphone ear package position does in proper order: a sound generating device (such as a loudspeaker), a battery and a PCB. Due to the limited space of the earphone structure, the sound generating device and the battery can be tightly combined together. When the battery normally works, a magnetic field is generated due to the change of current, and the direction of the magnetic field of the battery in a winding mode is just vertical to the winding direction and is parallel to the direction of the magnetic field of the loudspeaker magnet, so that the earphone generates current noise and other noise when the earphone normally works.
Therefore, how to reduce the interference of the battery on the magnetic field of the sound generating device is a technical problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
The utility model aims at providing an earphone can reduce the battery and disturb sound generating mechanism magnetic field.
In order to solve the technical problem, the application provides an earphone which comprises a sound generating device and a power supply assembly;
the power supply assembly comprises a first wound battery and a second wound battery which are arranged in a stacked mode, winding center lines of the first wound battery and the second wound battery are overlapped, and current directions of the first wound battery and the second wound battery are opposite when the power supply assembly works.
Optionally, the first wound battery cell is connected to a PCM protection plate, and the second wound battery cell is connected to the PCM protection plate.
Optionally, the first wound battery and the second wound battery are wound batteries with the same electrochemical performance parameters.
Optionally, the number of the first winding type battery and the second winding type battery in the power supply assembly is the same.
Optionally, the total number of the first wound battery and the second wound battery is greater than 2, and the first wound battery and the second wound battery are staggered in the power supply assembly.
Optionally, the sound generating device comprises a loudspeaker and a loudspeaker magnet, wherein the loudspeaker magnet is arranged between the loudspeaker and the power supply assembly.
Optionally, a magnetic separation sheet is arranged between the sound generating device and the power supply assembly.
Optionally, the first wound battery and the second wound battery are both wound steel shell button batteries.
Optionally, the winding directions of the pole pieces of the first wound battery and the second wound battery are opposite, and the current introducing directions of the first wound battery and the second wound battery are the same.
Optionally, the winding directions of the pole pieces of the first wound battery and the second wound battery are the same, and the current introducing directions of the first wound battery and the second wound battery are opposite.
The application provides an earphone, which comprises a sound generating device and a power supply assembly; the power supply assembly comprises a first wound battery and a second wound battery which are arranged in a stacked mode, winding center lines of the first wound battery and the second wound battery are overlapped, and current directions of the first wound battery and the second wound battery are opposite when the power supply assembly works.
The utility model provides an including first coiling formula battery and second coiling formula battery in the earphone, first coiling formula battery and second coiling formula battery are piled up and are arranged and the coincidence of coiling central line. When the power supply assembly works, the current directions of the first winding type battery and the second winding type battery are opposite, so that the magnetic fields generated by the first winding type battery and the second winding type battery are opposite, the magnetic fields between the first winding type battery and the second winding type battery in the power supply assembly are offset, and the magnetic field interference of the battery to the sound production device is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an earphone according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a power supply assembly according to an embodiment of the present disclosure;
fig. 3 is a schematic view illustrating a connection manner between a jelly-roll type battery and a PCM protection plate according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a layout of a wound battery in a first power supply assembly according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram illustrating a layout of a wound battery in a second power supply assembly according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating a winding manner of a battery in a first power supply assembly according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram illustrating a winding manner of a battery in a second power supply assembly according to an embodiment of the present disclosure;
fig. 8 is a schematic internal structure diagram of a TWS headset according to an embodiment of the present application;
fig. 9 is a schematic diagram of a magnetic field distribution of a battery of a TWS headset according to an embodiment of the present application.
Detailed Description
The core of this application is to provide an earphone, can reduce the battery and disturb the magnetic field of sound generating mechanism, promote the tone quality of earphone.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an earphone according to an embodiment of the present disclosure.
The device may include a sound generating device 100, a power supply assembly 200, and a main board 300; this sound generating mechanism 100 is the device that is used for broadcasting sound signal to the people's ear, and the device can include loudspeaker and loudspeaker magnet, loudspeaker magnet set up in loudspeaker with between the power supply unit. The power supply assembly 200 is a means for supplying power to all components in the headset. The main board 300 is a device for controlling signals to the sound generating device 100 and performing information interaction with a terminal device (such as a mobile phone, a computer, etc.). I in fig. 1 denotes the current direction.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a power supply assembly according to an embodiment of the present disclosure, as shown in fig. 2, the power supply assembly includes a first wound battery 201 and a second wound battery 202 arranged in a stacked manner, winding center lines of the first wound battery 201 and the second wound battery 202 are coincident, and directions of currents 202 of the first wound battery 201 and the second wound battery are opposite when the power supply assembly is operated. The present embodiment does not limit the number of the first wound battery 201 and the second wound battery 202 in the power supply assembly. The first wound battery 201 and the second wound battery 202 are both cylindrical, and the stacking arrangement refers to the end-to-end arrangement between the adjacent first wound battery 201 and/or second wound battery 202. The magnetic field direction of the first wound battery 201 is to the left in fig. 2, and the magnetic field direction of the second wound battery 201 is to the right. For example, when the power supply module is operating, the current direction of the first wound battery 201 is clockwise, and the current direction of the second wound battery 202 is counterclockwise. For the convenience of understanding, all the wound cells in the drawings are represented by pole pieces of the wound cells, and the wound cells can further comprise a shell, a pole lug, an insulating diaphragm and the like. Specifically, the first wound battery and the second wound battery are both wound steel shell button batteries. In the embodiment, two identical steel-shell batteries are used, the manufacturing process of the batteries is not changed, and the magnetic field radiated when the batteries normally work can be inhibited or eliminated through battery stacking on the premise of not increasing the process complexity.
The earphone provided by the embodiment comprises a first winding type battery and a second winding type battery which are stacked and arranged, and winding center lines of the first winding type battery and the second winding type battery are overlapped. When the power supply assembly works, the current directions of the first winding type battery and the second winding type battery are opposite, so that the magnetic fields generated by the first winding type battery and the second winding type battery are opposite, the magnetic fields between the first winding type battery and the second winding type battery in the power supply assembly are offset, and the magnetic field interference of the battery to the sound production device is reduced.
Furthermore, still include PCM (Protection Circuit Module) Protection shield on the mainboard of above-mentioned earphone, the PCM Protection shield is connected with first coiling formula battery and second coiling formula battery respectively to carry out charge-discharge Protection to first coiling formula battery and second coiling formula battery. Referring to fig. 3, fig. 3 is a schematic view illustrating a connection manner between a spiral wound battery and a PCM protection plate according to an embodiment of the present disclosure, as shown in fig. 3, positive electrodes of a first spiral wound battery and a second spiral wound battery are both connected to a positive electrode of the PCM protection plate, and negative electrodes of the first spiral wound battery and the second spiral wound battery are both connected to a negative electrode of the PCM protection plate.
Further, the first wound battery and the second wound battery are wound batteries having the same electrochemical performance parameters. The electrochemical performance parameters comprise rated voltage, rated capacity, high and low temperature performance, cycle life and the like. The first winding type battery and the second winding type battery can be winding type battery cells with the same winding number of turns and the same winding density degree of the pole pieces. It is understood that, in order to improve the magnetic field cancellation effect of the first wound battery and the second wound battery, the number of the first wound battery and the second wound battery in the present embodiment is the same.
Referring to fig. 4, fig. 4 is a schematic diagram of a layout of a wound battery in a first power supply assembly according to an embodiment of the present disclosure, fig. 4 shows a stacking scheme when the power supply assembly includes N first wound batteries and M second wound batteries, where N and M are both greater than 1, and all the first wound batteries may be stacked and arranged at one end and all the second wound batteries may be stacked and arranged at the other end.
Referring to fig. 5, fig. 5 is a schematic diagram of a layout manner of a rolled battery in a second power supply assembly according to an embodiment of the present disclosure, where fig. 5 illustrates a stacking scheme when the total number of first rolled batteries and second rolled batteries is greater than 2, and at this time, the first rolled batteries and the second rolled batteries are staggered in the power supply assembly, that is, the current directions (clockwise or counterclockwise) of any two adjacent rolled batteries in the power supply assembly are different.
Furthermore, because there are difference, there are factors such as performance parameter deviation in first wound battery and the second wound battery to first wound battery and second wound battery apart from sound generating mechanism's distance, the radiation magnetic field of first wound battery and second wound battery probably can't offset completely, this embodiment can be at sound generating mechanism with set up the magnetism sheet between the power supply unit, further reduce the battery and disturb sound generating mechanism's magnetic field.
Referring to fig. 6, fig. 6 is a schematic view illustrating a winding manner of a battery in a first power supply assembly according to an embodiment of the present disclosure, in fig. 6, winding directions of pole pieces of the first wound battery and the second wound battery are opposite, and current introducing directions of the first wound battery and the second wound battery are the same. The winding direction of the pole piece comprises anticlockwise winding or clockwise winding; the current introducing direction refers to a current flowing direction in the pole piece, and includes a direction from one end close to the rotation center to one end far away from the rotation center, or a direction from one end far away from the rotation center to one end close to the rotation center.
As a possible embodiment, as shown in fig. 6(a), the positive electrode of the first wound battery 201 is the end close to the winding center, the negative electrode is the end far from the winding center, the positive electrode of the second wound battery 202 is the end close to the winding center, and the negative electrode is the end far from the winding center, in this case, the current introducing directions of the first wound battery 201 and the second wound battery 202 are both from the end far from the winding center to the end close to the winding center.
As another possible embodiment, as shown in fig. 6(b), the negative electrode of the first wound battery 201 is the end close to the winding center, and the positive electrode is the end far from the winding center, and the negative electrode of the second wound battery 202 is the end close to the winding center, and the positive electrode is the end far from the winding center, in which case the current introducing directions of the first wound battery 201 and the second wound battery 202 are both from the end close to the winding center to the end far from the winding center.
Referring to fig. 7, fig. 7 is a schematic view illustrating a winding manner of a battery in a second power supply assembly according to an embodiment of the present disclosure, in fig. 7, winding directions of pole pieces of a first wound battery and a second wound battery are the same, and current introducing directions of the first wound battery and the second wound battery are opposite.
As a possible embodiment, as shown in fig. 7(a), the positive electrode of the first wound battery 201 is one end close to the winding center, the negative electrode is one end away from the winding center, the negative electrode of the second wound battery 202 is one end close to the winding center, and the positive electrode is one end away from the winding center, in this case, the current drawing direction of the first wound battery 201 flows from one end away from the winding center to one end close to the winding center, and the current drawing direction of the second wound battery 202 flows from one end close to the winding center to one end away from the winding center.
As another possible embodiment, as shown in fig. 7(b), the negative electrode of the first wound battery 201 is the end close to the winding center, the positive electrode is the end far from the winding center, the positive electrode of the second wound battery 202 is the end close to the winding center, and the negative electrode is the end far from the winding center, in this case, the current drawing direction of the first wound battery 201 flows from the end close to the winding center to the end far from the winding center, and the current drawing direction of the second wound battery 202 flows from the end far from the winding center to the end close to the winding center.
The above scheme is described by an example in practical application, please refer to fig. 8, and fig. 8 is a schematic diagram of an internal structure of a tws (true Wireless stereo) headset according to an embodiment of the present application. As shown in fig. 8, the horn, the battery and the circuit board of the TWS headset are arranged in a stacked order in a structural manner. The TWS headset includes two identical lithium ion batteries: battery 1 and battery 2, battery 1 and battery 2 are arranged symmetrically according to battery polarity.
According to the functional requirements of the whole TWS earphone, the lithium ion battery needs to be matched with the PCM protection plate for charge and discharge protection, so that the safety problems caused by overcharge, overdischarge and the like of the battery are prevented. In this embodiment, two batteries may be respectively attached to the PCM protection board. In the embodiment, two batteries share one PCM protection plate, so that the cost is not increased additionally.
Referring to fig. 9, fig. 9 is a schematic diagram of a magnetic field distribution of a battery of a TWS headset according to an embodiment of the present disclosure. As shown in fig. 9. When the circuit system works normally, the two batteries are connected in parallel, when a large current is required in the circuit system, the two batteries are arranged in a central symmetry mode, currents flowing through the two batteries are theoretically equal in size and opposite in direction, and the directions of magnetic fields generated at the same time are also exactly equal in size and opposite in direction. Therefore, magnetic fields generated by the two batteries during normal operation can be mutually offset, the magnetic field intensity radiated to the peripheral space of the batteries is reduced, and the influence of the battery radiation magnetic field on a horn magnetic circuit is reduced or eliminated. By the mode, the influence of the radiation magnetic field during normal operation of the battery can be effectively solved, so that the current sound of the earphone caused by the radiation magnetic field of the battery is restrained or even eliminated.
Because the situation is complicated and cannot be illustrated by a list, a person skilled in the art can realize that many examples exist according to the basic principle provided by the application and the practical situation, and the protection scope of the application should be protected without enough inventive work.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present application are explained herein by using specific examples, and the above descriptions of the examples are only used to help understand the scheme and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims (10)

1. An earphone is characterized by comprising a sound generating device and a power supply assembly;
the power supply assembly comprises a first wound battery and a second wound battery which are arranged in a stacked mode, winding center lines of the first wound battery and the second wound battery are overlapped, and current directions of the first wound battery and the second wound battery are opposite when the power supply assembly works.
2. The earphone as claimed in claim 1, wherein the first jelly roll type battery is connected to a PCM protection board, and the second jelly roll type battery is connected to the PCM protection board.
3. The headset of claim 1, wherein the first wound battery and the second wound battery are wound batteries having the same electrochemical performance parameters.
4. The headset of claim 3, wherein the number of first and second wound batteries in the power supply assembly is the same.
5. The headset of claim 1, wherein the total number of the first wound battery and the second wound battery is greater than 2, and the first wound battery and the second wound battery are staggered in the power supply assembly.
6. The headset of claim 1, wherein the sound generating device comprises a speaker and a speaker magnet, the speaker magnet being disposed between the speaker and the power supply assembly.
7. The headset as claimed in claim 1, wherein a magnetic shielding sheet is disposed between the sound generating device and the power supply assembly.
8. The headset of claim 1, wherein the first and second wound batteries are wound steel shell button cells.
9. The earphone according to any one of claims 1 to 8, wherein the winding direction of the pole pieces of the first wound battery is opposite to that of the second wound battery, and the current introduction direction of the first wound battery is the same as that of the second wound battery.
10. The earphone according to any one of claims 1 to 8, wherein the winding direction of the pole pieces of the first wound battery is the same as that of the second wound battery, and the current introduction direction of the first wound battery is opposite to that of the second wound battery.
CN202110714216.4A 2021-06-25 2021-06-25 Earphone set Pending CN113451661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110714216.4A CN113451661A (en) 2021-06-25 2021-06-25 Earphone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110714216.4A CN113451661A (en) 2021-06-25 2021-06-25 Earphone set

Publications (1)

Publication Number Publication Date
CN113451661A true CN113451661A (en) 2021-09-28

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Application Number Title Priority Date Filing Date
CN202110714216.4A Pending CN113451661A (en) 2021-06-25 2021-06-25 Earphone set

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CN (1) CN113451661A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114286258A (en) * 2021-12-23 2022-04-05 歌尔科技有限公司 Current sound eliminating method and device, earphone and computer readable storage medium

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Publication number Priority date Publication date Assignee Title
CN203151578U (en) * 2013-03-18 2013-08-21 钟文双 Manual contraction magnetic earphone cable mobile phone electric panel
CN203883972U (en) * 2014-05-14 2014-10-15 先端复合材料有限公司 A structure of a sound player
CN209330346U (en) * 2019-01-31 2019-08-30 谢镇鹏 A kind of wireless charging bluetooth headset and its charging box
CN209545811U (en) * 2019-02-20 2019-10-25 东莞市好美声电子有限公司 A kind of hanging-on-neck type bluetooth headset convenient for winding headphone line
CN110519671A (en) * 2019-08-26 2019-11-29 华为技术有限公司 Wireless headset
CN209804717U (en) * 2019-03-07 2019-12-17 广东微电新能源有限公司 Button cell
US20200162807A1 (en) * 2018-11-21 2020-05-21 ESI Cases & Accessories Headphone charging apparatus
CN112615039A (en) * 2020-12-31 2021-04-06 广东微电新能源有限公司 Battery cell structure, battery and electronic equipment
CN112886103A (en) * 2021-02-10 2021-06-01 东莞新能德科技有限公司 Battery and electric equipment

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203151578U (en) * 2013-03-18 2013-08-21 钟文双 Manual contraction magnetic earphone cable mobile phone electric panel
CN203883972U (en) * 2014-05-14 2014-10-15 先端复合材料有限公司 A structure of a sound player
US20200162807A1 (en) * 2018-11-21 2020-05-21 ESI Cases & Accessories Headphone charging apparatus
CN209330346U (en) * 2019-01-31 2019-08-30 谢镇鹏 A kind of wireless charging bluetooth headset and its charging box
CN209545811U (en) * 2019-02-20 2019-10-25 东莞市好美声电子有限公司 A kind of hanging-on-neck type bluetooth headset convenient for winding headphone line
CN209804717U (en) * 2019-03-07 2019-12-17 广东微电新能源有限公司 Button cell
CN110519671A (en) * 2019-08-26 2019-11-29 华为技术有限公司 Wireless headset
CN112615039A (en) * 2020-12-31 2021-04-06 广东微电新能源有限公司 Battery cell structure, battery and electronic equipment
CN112886103A (en) * 2021-02-10 2021-06-01 东莞新能德科技有限公司 Battery and electric equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114286258A (en) * 2021-12-23 2022-04-05 歌尔科技有限公司 Current sound eliminating method and device, earphone and computer readable storage medium

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