CN113394465B - Winding type battery and TWS Bluetooth headset - Google Patents
Winding type battery and TWS Bluetooth headset Download PDFInfo
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- CN113394465B CN113394465B CN202110639137.1A CN202110639137A CN113394465B CN 113394465 B CN113394465 B CN 113394465B CN 202110639137 A CN202110639137 A CN 202110639137A CN 113394465 B CN113394465 B CN 113394465B
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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
- H01M10/058—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
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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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
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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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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0075—Magnetic shielding materials
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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
-
- 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)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Primary Cells (AREA)
Abstract
The application discloses a winding type battery method, wherein a battery pole piece of a winding type battery is wound according to a preset path; the preset paths comprise at least one clockwise winding path and at least one anticlockwise winding path, and the winding centers of the clockwise winding path and the anticlockwise winding path are coincident. The battery pole piece in this application can produce two kinds of opposite direction's magnetic field simultaneously, and above-mentioned two kinds of magnetic fields can offset each other, and then reduce the magnetic field intensity that coiling formula battery during operation produced, have reduced the coiling formula battery and have disturbed to external magnetic field. The application also discloses a TWS Bluetooth headset, which has the beneficial effects.
Description
Technical Field
The application relates to the technical field of battery design, in particular to a winding type battery and a TWS Bluetooth headset.
Background
With the development of Wireless headset technology, TWS (True Wireless Stereo) headsets come in endlessly. The TWS headset will have a battery for powering the system, which is typically a lithium ion battery that can be recharged repeatedly.
The batteries used in TWS headsets at present include steel shell button batteries and soft pack cylindrical batteries. Steel can batteries are typically mounted in the ear bags. The manufacturing process of the steel shell battery comprises a laminated structure and a winding structure. The same size battery, wound battery capacity is better than laminated battery, so wound battery is commonly used in the art as the power source of TWS headset. However, the magnetic field generated when the wound battery operates interferes with the electromagnetic sensor members around the battery.
Therefore, how to reduce the magnetic field interference generated by the wound battery is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The application aims to provide a winding type battery and a TWS Bluetooth headset, which can reduce magnetic field interference generated by the winding type battery.
In order to solve the technical problem, the present application provides a coiled battery, in which a battery pole piece of the coiled battery is coiled according to a preset path; the preset paths comprise at least one clockwise winding path and at least one anticlockwise winding path, and the winding centers of the clockwise winding path and the anticlockwise winding path are coincident.
Optionally, the clockwise winding length of all the clockwise winding paths is equal to the counterclockwise winding length of all the counterclockwise winding paths.
Optionally, the number of windings of all the clockwise winding paths is equal to the number of windings of all the anticlockwise winding paths.
Optionally, the clockwise winding path and the counterclockwise winding path in the preset path are alternately distributed in a winding manner.
Optionally, from the winding end to the winding center of the battery pole piece, the number of winding turns of the adjacent clockwise winding path and the counterclockwise winding path is increased progressively according to a preset number of turns.
Optionally, the distance between all adjacent winding turns of the battery pole pieces is the same.
Optionally, the battery pole piece comprises a positive pole piece and a negative pole piece, and an electrolyte is arranged between the positive pole piece and the negative pole piece; the winding type battery further comprises a positive electrode shell and a negative electrode shell, the positive electrode piece is connected with the positive electrode shell, the negative electrode piece is connected with the negative electrode shell, and the positive electrode shell and the negative electrode shell are fixedly connected through an insulating sealing layer.
Optionally, all the reverse winding positions in the preset path are discretely arranged; wherein the reverse winding position is a connection position of the clockwise winding path and the counterclockwise winding path.
The application also provides a TWS Bluetooth headset, which comprises any one of the winding type battery and the loudspeaker.
Optionally, a magnetic separation sheet is arranged between the winding battery and the loudspeaker.
The application provides a winding type battery, wherein a battery pole piece of the winding type battery is wound according to a preset path; the preset paths comprise at least one clockwise winding path and at least one anticlockwise winding path, and the winding centers of the clockwise winding path and the anticlockwise winding path are coincident.
The battery pole piece of the coiled battery provided in the application is coiled according to a preset path, wherein the preset path comprises at least one clockwise coiling path and at least one anticlockwise coiling path. When the battery pole piece is electrified, the directions of magnetic fields generated by the battery pole piece corresponding to the clockwise winding path and the anticlockwise winding path are opposite, so that the battery pole piece in the application can simultaneously generate two magnetic fields opposite in direction, the two magnetic fields can be mutually offset, the magnetic field intensity generated when the winding type battery works is further reduced, and the magnetic field interference of the winding type battery to the outside is reduced. This application still provides a TWS earphone simultaneously, has above-mentioned beneficial effect, no longer gives unnecessary details here.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic diagram of a battery pole piece structure of a wound battery according to an embodiment of the present disclosure;
fig. 2 is a top view of a battery pole piece of a wound battery according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a reverse winding position provided by an embodiment of the present application;
fig. 4 is a schematic diagram illustrating a cell winding manner of a steel-shell button-wound battery commonly used in the related art;
fig. 5 is a schematic view showing the magnetic field direction of a steel-shell button wound battery commonly used in the related art;
fig. 6 is a schematic view of a magnetic field direction of a steel-shell button wound battery provided in an embodiment of the present application.
Detailed Description
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 and fig. 2, fig. 1 is a schematic diagram of a battery pole piece structure of a wound battery provided in an embodiment of the present disclosure, and fig. 2 is a top view of a battery pole piece of a wound battery provided in an embodiment of the present disclosure, where a path shown in the top view is a preset path of winding of the battery pole piece. The preset paths include at least one clockwise winding path (i.e., a path shown by a solid line in fig. 2) and at least one counterclockwise winding path (i.e., a path shown by a dotted line in fig. 2), and the winding centers of the clockwise winding path and the counterclockwise winding path coincide. Both the dotted line and the solid line in fig. 2 indicate battery pole pieces, the battery pole pieces include a positive pole piece and a negative pole piece, the positive pole piece and the negative pole piece are stacked together in advance and are wound in the same manner, and a single line indicates the positive pole piece and the negative pole piece stacked together in fig. 2.
The battery pole piece of the wound battery provided in this embodiment is wound according to a preset path, where the preset path includes at least one clockwise winding path and at least one counterclockwise winding path. When the battery pole piece is electrified, the directions of the magnetic fields generated by the battery pole piece corresponding to the clockwise winding path and the anticlockwise winding path are opposite, so that the battery pole piece in the embodiment can simultaneously generate two magnetic fields with opposite directions, the two magnetic fields can be mutually offset, the magnetic field intensity generated when the winding type battery works is further reduced, and the magnetic field interference of the winding type battery to the outside is reduced.
As a possible implementation, the clockwise winding length of all clockwise winding paths in the embodiment shown in fig. 1 is equal to the counterclockwise winding length of all counterclockwise winding paths. The clockwise winding length refers to a winding length of the clockwise winding path in a clockwise direction, and the counterclockwise winding length refers to a winding length of the counterclockwise winding path in a counterclockwise direction. By keeping the clockwise winding length equal to the counterclockwise winding length, the embodiment can enable the magnetic field intensity generated by the battery pole piece on the clockwise winding path and the counterclockwise winding path to be equal and opposite, thereby avoiding the magnetic field interference of the winding battery to the outside.
As a possible implementation, the number of windings of all clockwise winding paths in the embodiment shown in fig. 1 may be equal to the number of windings of all counterclockwise winding paths. The winding number of turns of the clockwise winding path and the anticlockwise winding path is controlled to be equal, so that the process complexity of producing the winding type battery can be reduced, and the production efficiency is improved.
As a possible implementation manner, the clockwise winding path and the counterclockwise winding path in the preset path in the embodiment shown in fig. 1 are alternately wound, that is, the battery pole piece in this embodiment may be wound clockwise and counterclockwise alternately. Furthermore, from the winding tail end of the battery pole piece to the winding center, the winding number of the adjacent clockwise winding path and the anticlockwise winding path is increased progressively according to the preset number of turns. That is, the length of the winding path increases by a preset length, which may be one-fourth of the current winding circumference, after each change of the winding direction of the battery pole piece than before the change of the winding direction.
Further, if the preset path includes N winding sub-paths (a clockwise winding path and a counterclockwise winding path), the 1 st winding sub-path is a path away from one end of the winding center, the nth winding sub-path is a path close to one end of the winding center, the difference between the number of winding turns of the i-th winding sub-path and the number of winding turns of the i + 1-th winding sub-path is a fixed value, i +1 < N, and the number of winding turns of the nth winding sub-path is determined according to the difference between the clockwise winding length and the counterclockwise winding length in the first N-1 winding sub-paths, so that the clockwise winding length of all clockwise winding paths is equal to the counterclockwise winding length of all counterclockwise winding paths.
As a possible embodiment, the distance between all the battery pole pieces adjacent to each other is the same. The battery pole piece comprises a positive pole piece and a negative pole piece, wherein electrolyte is arranged between the positive pole piece and the negative pole piece; the winding type battery further comprises a positive electrode shell and a negative electrode shell, the positive electrode piece is connected with the positive electrode shell, the negative electrode piece is connected with the negative electrode shell, and the positive electrode shell and the negative electrode shell are fixedly connected through an insulating sealing layer.
As a possible embodiment, all the reverse winding positions in the preset path are arranged discretely; wherein the reverse winding position is a connection position of the clockwise winding path and the counterclockwise winding path. Referring to fig. 3, fig. 3 is a schematic diagram of a reverse winding position provided by an embodiment of the present application, and P in fig. 3 is a connection position of a clockwise winding path and a counterclockwise winding path in a battery pole piece in fig. 2. Optionally, any three reverse winding positions in the cross-sectional view of the battery pole piece are not on the same straight line.
The solutions described in the above embodiments are illustrated by examples in practical applications.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating a cell winding manner of a steel-shell button-wound battery commonly used in the related art, where 401 is a positive electrode plate of the battery, 402 is a negative electrode plate of the battery, and an electrolyte is disposed between the positive electrode plate and the negative electrode plate of the battery. The positive electrode plate and the negative electrode plate of the battery are previously stacked together and then wound into a cylindrical shape in one direction (clockwise or counterclockwise).
According to Faraday's law of electromagnetic induction, the magnetic field generated by the battery during normal operation is perpendicular to the winding direction. Referring to fig. 5, fig. 5 is a schematic view of a magnetic field direction of a steel-shell button winding battery commonly used in the related art, and as shown in fig. 5, since the winding direction of the battery cell is always consistent from end to end, the magnetic field directions generated at all positions of the battery during normal operation are always consistent, so that when the current of the battery varies, a relatively large magnetic field is generated around the battery. Since the battery is very close to the earphone speaker, it will affect the magnetic circuit of the speaker, thereby generating noise.
In order to solve the above problems, the present application provides a design solution of a steel-shell button wound battery as shown in fig. 2 and fig. 6, and fig. 6 is a schematic view of a magnetic field direction of the steel-shell button wound battery as shown in fig. 2 according to an embodiment of the present application.
The present embodiment uses a winding process to ensure that the battery capacity is maximized under the condition of the same volume. As shown in fig. 2, the winding method of the present embodiment is: and (3) stacking the negative pole piece and the positive pole piece of the battery together and alternately winding clockwise and anticlockwise. For example, the present embodiment may be wound one turn clockwise, another 1.25 turns counterclockwise, another 1.5 turns clockwise, and so on, ultimately ensuring that the number of turns clockwise is equal to the number of turns counterclockwise. The winding turns of clockwise winding and anticlockwise winding in the winding type battery are increased progressively according to 1/4 turn, so that the winding reverse position is discrete, the pole piece is wound into a circle, and the influence of reverse position normalization on the reliability of the battery is avoided. The internal current flow direction of the winding type battery manufactured in the manner shown in fig. 2 does not maintain the same flow direction, and the corresponding magnetic fields generated by the current change cancel each other out, so that the magnetic field intensity radiated to the outside when the battery normally works can be reduced to the minimum.
As shown in fig. 6, the magnetic fields generated by the winding method of the battery shown in fig. 2 are in different directions, and the magnetic fields generated at different positions in the winding direction are opposite in direction and equal in magnitude when the battery works normally. In order to ensure the magnetic field offset effect, the battery can ensure that the number of forward winding turns is equal to the number of reverse winding turns in the manufacturing process. When the battery manufactured by the winding mode works normally (even if the current changes violently), the magnetic fields of the forward winding and the reverse winding can be mutually counteracted, so that the magnetic field radiated to the outside by the whole battery can be reduced to the minimum.
The steel shell button winding type battery provided by the embodiment adopts a winding structure, and the magnetic field generated by the battery in normal work, particularly when the current changes violently, is minimized through a specific winding mode, so that the influence of the magnetic field generated by the current change of the battery on the magnetic field of the loudspeaker magnet is reduced, the noise or current noise generated by the earphone due to the influence of the magnetic field generated by the battery in normal work is reduced or eliminated, and the user experience is improved.
The application also provides a TWS bluetooth headset, which may include a memory and a processor, where the memory stores a computer program, and the processor may implement the steps provided by the above embodiments when calling the computer program in the memory. Of course, the TWS bluetooth headset may also include various network interfaces, power supplies, speakers, etc. And a magnetic shielding sheet is arranged between the winding battery and the loudspeaker.
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 device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. 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.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Claims (7)
1. A winding type battery is characterized in that a battery pole piece of the winding type battery is wound according to a preset path; wherein the preset paths comprise at least one clockwise winding path and at least one counter-clockwise winding path, and the winding centers of the clockwise winding path and the counter-clockwise winding path are coincident;
wherein the clockwise winding path and the anticlockwise winding path in the preset path are alternately wound and distributed; the distribution sequence of at least one section of winding path in the preset paths is a clockwise winding path, a counterclockwise winding path and a clockwise winding path; from the winding tail end of the battery pole piece to the winding center, the winding turns of the clockwise winding path and the anticlockwise winding path which are adjacent are increased progressively according to preset turns, so that the length of the winding path after the winding direction of the battery pole piece is changed every time is increased by preset length than before the winding direction is changed;
all the reverse winding positions in the preset path are distributed discretely, so that any three reverse winding positions in a cross-sectional view of the battery pole piece are not on the same straight line; wherein the reverse winding position is a connection position of the clockwise winding path and the counterclockwise winding path.
2. A coiled battery according to claim 1, wherein the clockwise winding length of all the clockwise winding paths is equal to the counterclockwise winding length of all the counterclockwise winding paths.
3. A coiled battery according to claim 1, wherein the number of windings of all the clockwise winding paths is equal to the number of windings of all the counterclockwise winding paths.
4. A rolled battery as claimed in claim 1, wherein the distance between all adjacent turns of the battery pole piece is the same.
5. A coiled battery according to claim 1, wherein the battery pole piece comprises a positive pole piece and a negative pole piece, and an electrolyte is arranged between the positive pole piece and the negative pole piece; the winding type battery further comprises a positive electrode shell and a negative electrode shell, the positive electrode piece is connected with the positive electrode shell, the negative electrode piece is connected with the negative electrode shell, and the positive electrode shell and the negative electrode shell are fixedly connected through an insulating sealing layer.
6. A TWS Bluetooth headset comprising the wound battery of any one of claims 1 to 5 and a speaker.
7. A TWS Bluetooth headset according to claim 6, wherein a magnetic shield is provided between the wound battery and the speaker.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110639137.1A CN113394465B (en) | 2021-06-08 | 2021-06-08 | Winding type battery and TWS Bluetooth headset |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110639137.1A CN113394465B (en) | 2021-06-08 | 2021-06-08 | Winding type battery and TWS Bluetooth headset |
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| CN113394465A CN113394465A (en) | 2021-09-14 |
| CN113394465B true CN113394465B (en) | 2022-11-22 |
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| US9240610B2 (en) * | 2009-11-23 | 2016-01-19 | Blackberry Limited | Rechargeable battery with reduced magnetic leak |
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| CN107732295A (en) * | 2017-10-12 | 2018-02-23 | 燕山大学 | A kind of solid oxide electrolyte and its low-temperature sintering method based on halogenation lithium doping |
| CN112615039B (en) * | 2020-12-31 | 2022-05-17 | 广东微电新能源有限公司 | Battery cell structure, battery and electronic equipment |
| CN112768625A (en) * | 2021-01-13 | 2021-05-07 | 广东维都利新能源有限公司 | Battery cell for counteracting electromagnetic field, soft-package lithium battery and manufacturing method thereof |
| CN112736294A (en) * | 2021-01-13 | 2021-04-30 | 广东维都利新能源有限公司 | Non-electromagnetic-interference battery core, soft-package lithium battery and manufacturing method of battery core and soft-package lithium battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102074725A (en) * | 2009-11-23 | 2011-05-25 | 捷讯研究有限公司 | Rechargeable battery with reduced magnetic leak |
| CN102544594A (en) * | 2012-02-28 | 2012-07-04 | 华为终端有限公司 | Cell and terminal |
| JP2013214409A (en) * | 2012-04-02 | 2013-10-17 | Hitachi Maxell Ltd | Wound battery |
| CN212967781U (en) * | 2020-09-16 | 2021-04-13 | Oppo广东移动通信有限公司 | Battery, electroacoustic assembly and audio equipment |
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