WO2013127313A1 - Batterie et terminal - Google Patents

Batterie et terminal Download PDF

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Publication number
WO2013127313A1
WO2013127313A1 PCT/CN2013/071751 CN2013071751W WO2013127313A1 WO 2013127313 A1 WO2013127313 A1 WO 2013127313A1 CN 2013071751 W CN2013071751 W CN 2013071751W WO 2013127313 A1 WO2013127313 A1 WO 2013127313A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode tab
negative electrode
positive electrode
battery
tab
Prior art date
Application number
PCT/CN2013/071751
Other languages
English (en)
Chinese (zh)
Inventor
赵文龙
Original Assignee
华为终端有限公司
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 华为终端有限公司 filed Critical 华为终端有限公司
Publication of WO2013127313A1 publication Critical patent/WO2013127313A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • 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

Definitions

  • the present invention relates to the field of electronics, and in particular, to a battery and a terminal.
  • BACKGROUND OF THE INVENTION In recent years, with the popularization of digital mobile phones, radio waves transmitted by digital mobile phones form an electromagnetic field around the antenna, which causes people wearing hearing aids to hear harsh snoring, and more and more hearing aids are equipped with Dais began to complain that their digital mobile phones and hearing aids are not well compatible.
  • the noise floor, or noise floor is also known as background noise.
  • background noise Generally refers to the total noise in the electro-acoustic system except the useful signal: including the noise of the audio equipment and the noise of the sound environment. Therefore, seeking good compatibility between hearing aids and digital mobile phones has become a common concern for hearing aid manufacturers, digital mobile phone manufacturers, and network service providers.
  • the inventors have found that most of the magnetic field noise floor comes from the battery.
  • the prior art passes Devices with Hearing Aid Compatibility (HAC, Hearing Aid Compatibility) are added to digital mobile phones to increase the signal-to-noise ratio of the magnetic field by increasing the strength of the magnetic field.
  • HAC Hearing Aid Compatibility
  • the prior art cannot effectively reduce The magnetic field noise floor, and also increases the production cost of digital mobile phones.
  • Embodiments of the present invention provide a battery and a terminal, which can make the current flowing on the positive electrode and the negative electrode equal in magnitude and opposite in direction to reduce the magnetic field noise. Further, however, the production cost of the battery is not increased, and the production cost of the terminal is not increased.
  • an embodiment of the present invention provides a battery including a battery core, the battery core includes a positive electrode sheet, a separator, a negative electrode sheet, and a positive electrode ear electrically contacting the positive electrode sheet, and a positive electrode layer, which are sequentially stacked and wound. a negative electrode ear electrically contacting the negative electrode sheet, wherein the positive electrode ear and the negative electrode ear are located at the same end of the positive electrode sheet and the negative electrode sheet such that a current flowing on the positive electrode sheet flows with the negative electrode sheet The currents are equal in magnitude and opposite in direction.
  • an embodiment of the present invention provides a terminal, including a battery core, the battery core includes a positive electrode sheet, a separator, a negative electrode sheet, and a positive electrode ear electrically contacting the positive electrode sheet, and a positive electrode, which are sequentially stacked and wound.
  • a negative electrode ear electrically contacting the negative electrode sheet, wherein the positive electrode ear and the negative electrode ear are located at the same end of the positive electrode sheet and the negative electrode sheet such that a current flowing on the positive electrode sheet flows with the negative electrode sheet
  • the currents are equal in magnitude and opposite in direction.
  • the battery and the terminal provided by the embodiments of the present invention are provided, wherein the positive electrode tab and the negative electrode tab are disposed at the same end of the positive electrode sheet, the separator and the negative electrode sheet which are sequentially stacked and wound, wherein the positive electrode tab and the positive electrode tab are in electrical contact, and the negative electrode tab is The negative electrode tab is electrically contacted so that the current flowing on the positive electrode tab is equal in magnitude and opposite in direction to the current flowing on the negative electrode tab.
  • the current flowing on the positive electrode tab and the negative electrode tab can be equal in magnitude and opposite in direction to reduce the noise floor noise, and further, not only does not increase the production cost of the battery, but also increases the production cost of the terminal.
  • FIG. 1 is a schematic structural view 1 of a battery core according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a positive (negative) pole piece according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a magnetic field generated on a current-carrying coil axis according to an embodiment of the present invention
  • 4 is a schematic structural view of a prior art battery core
  • FIG. 5 is a schematic structural diagram 2 of a battery core according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural view 3 of a battery core according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram 2 of a positive (negative) pole piece according to an embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • An embodiment of the present invention provides a battery including a battery core.
  • the battery core includes a positive electrode sheet 10, a separator 11, a negative electrode sheet 12, and a positive electrode sheet 10, which are sequentially stacked and wound.
  • a positive electrode tab 13 in contact with the negative electrode tab 14 in electrical contact with the negative electrode tab 12, wherein the positive electrode tab 13 and the negative electrode tab 14 are located at the same end of the positive electrode tab 10 and the negative electrode tab 12, such that the The current flowing on the positive electrode tab 10 is equal to the current flowing on the negative electrode tab 12, and is opposite in direction.
  • FIG. 2 is a schematic view showing the structure of the positive electrode tab 10 (or the negative electrode tab 12), in which the positive electrode tab 13 is in electrical contact with the positive electrode tab 10 (or the negative electrode tab 14 is in electrical contact with the negative electrode tab 12).
  • Figure 3 shows the magnetic field on the axis of the current-carrying coil:
  • ⁇ is the angle between r and R, the sum of ⁇ and ⁇ is 90 degrees, dB is perpendicular to r, ⁇ « ⁇ is perpendicular to the axis, and r is perpendicular.
  • the component parallel to the axis direction is: 4 (R 2 + x 2 2
  • the magnetic induction intensity is: 2R
  • a magnetic field is generated around the current, which is the magnetic field strength generated by the current-carrying circular coil at a point in space. Since a constant current produces a constant magnetic field and the varying current produces a changing magnetic field, then if the current flowing in the current-carrying circular coil changes and the frequency of change is in the audio range, a corresponding effect occurs around the current-carrying coil. The frequency changes the magnetic field.
  • the battery of the prior art is a positive electrode sheet 10, a separator (not shown), a negative electrode sheet 12, and a positive electrode tab 13 which are sequentially stacked and wound, and are disposed in this order.
  • One end of the positive electrode sheet 10 of the positive electrode sheet 10, the separator and the negative electrode sheet 12, and the negative electrode tab 14 are located at the other end of the negative electrode sheet 12 of the positive electrode sheet 10, the separator, and the negative electrode sheet 12 which are sequentially stacked, that is, the positive electrode tab 13 Located at the winding end of the positive electrode sheet 10, the negative electrode tab 14 is located at the winding end of the negative electrode sheet 12, or the positive electrode tab 13 is located at the winding end of the positive electrode sheet 10, and the negative electrode tab 14 is located at the winding end of the negative electrode sheet 12,
  • the current flowing through the positive electrode tab 10 and the negative electrode tab 12 in the wound cell is approximately annular (the current direction is indicated by a broken line in Fig.
  • the magnetic field generated by the toroidal current is very strong.
  • the magnetic field is calculated as: When the current of the wire ring of radius R is passed, the circle is rounded.
  • the magnetic field strength at the center is (where 0 is the magnetic permeability of the vacuum), so that the magnetic field strength is proportional to the current, and the larger the current changes, the larger the magnetic field changes.
  • the battery provided by the embodiment of the present invention is a positive electrode sheet 10, a diaphragm (not shown), a negative electrode sheet 12, and a positive electrode tab 13 and a negative electrode tab 14 respectively stacked and wound in sequence.
  • the positive electrode tab 13 and the negative electrode tab 14 are located at the winding end of the positive electrode tab 10 and the negative electrode tab 12, or the positive tab 13 and the negative tab 14 are located at the positive tab 10,
  • the winding end of the negative electrode sheet 12 thus after winding
  • the current flowing on the positive electrode tab 10 in the cell is equal to the current flowing in the negative electrode tab 12, and the direction is opposite (the current direction is indicated by a broken line in Fig. 5).
  • the positive electrode is in electrical contact with the positive electrode
  • the negative electrode is in electrical contact with the negative electrode
  • the positive electrode tab 13 and the negative electrode tab 14 are located at the winding end of the positive electrode tab 10 and the negative electrode tab 12, that is, the wound positive tab 13 and the negative tab 14 are located outside the cell;
  • the positive electrode tab 13 and the negative electrode tab 14 are located at the winding end of the positive electrode tab 10 and the negative electrode tab 12, that is, the wound positive tab 13 and the negative tab 14 are located inside the cell.
  • the battery of the embodiment of the invention further includes a battery case, and the battery core is disposed inside the battery case.
  • the battery of the embodiment of the invention further includes a cell casing, the cell is disposed inside the cell casing, and the cell casing is disposed inside the battery casing.
  • the material of the battery case may be a ferromagnetic material.
  • the battery case is used to package the battery core and the battery case. Common battery housings do not use ferromagnetic materials.
  • a ferromagnetic material such as iron, steel, nickel or cobalt is used to integrally encapsulate the battery core and the battery core casing, and the magnetic field can be further shielded.
  • a cell casing of a ferromagnetic material may be used, and a cell is disposed inside the cell casing.
  • the design of the lithium ion battery is basically using an aluminum battery case, and the magnetic field is not well shielded.
  • a ferromagnetic material such as iron, steel, nickel or cobalt is used as the core case design, which can be further Shield the magnetic field generated by the cell.
  • the length of the positive electrode tab 13 is not less than the width of the positive electrode tab 10, and the length of the negative electrode tab 14 is not less than the width of the negative electrode tab 12. That is, the length of the positive electrode tab 13 may be greater than or equal to the width of the positive electrode tab 10, and the length of the negative electrode tab 14 may be greater than or equal to the width of the negative electrode tab 12.
  • the length of the positive electrode tab 13 may be greater than the width of the positive electrode tab 10
  • the length of the negative electrode tab 14 may be greater than the width of the negative electrode tab 12, so that the positive and negative ear can be wound from the package during battery packaging.
  • the cell extends to contact the positive and negative terminals of the cell housing.
  • the battery provided by the embodiment of the present invention is characterized in that the positive electrode tab and the negative electrode tab are disposed at the same end of the positive electrode tab and the negative electrode tab, wherein the positive electrode tab is in electrical contact with the positive electrode tab, and the negative electrode tab is electrically contacted with the negative electrode tab to make the positive electrode
  • the current flowing on the sheet is equal to the current flowing on the negative electrode sheet, and the direction is opposite.
  • the terminal includes a battery core.
  • the battery core includes a positive electrode sheet 10 , a diaphragm 11 , a negative electrode sheet 12 , and the positive electrode sheet which are sequentially stacked and wound.
  • a positive contact 13 electrically contacting the negative electrode tab 14 in electrical contact with the negative electrode tab 12, wherein the positive electrode tab 13 and the negative electrode tab 14 are located at the same end of the positive electrode tab 10 and the negative electrode tab 12, so that The current flowing on the positive electrode sheet 10 is equal to the current flowing on the negative electrode sheet 12, and the direction is opposite.
  • positive electrode tab 13 and the negative electrode tab 14 are located at the same end of the positive electrode tab 10 and the negative pole tab 12, and include:
  • the positive electrode tab 13 and the negative electrode tab 14 are located at the winding end of the positive electrode tab 10 and the negative electrode tab 12;
  • the positive electrode tab 13 and the negative electrode tab 14 are located at the winding ends of the positive electrode tab 10 and the negative electrode tab 12.
  • the battery core is covered with a core housing of a ferromagnetic material.
  • a cell casing of a ferromagnetic material may be used, and a cell is disposed inside the cell casing.
  • the design of the lithium ion battery is basically using an aluminum battery case, and the magnetic field cannot be shielded well.
  • a ferromagnetic material such as iron, steel, nickel or cobalt is used as the core case design, which can be further Shield the magnetic field generated by the cell.
  • the battery case is covered with a battery case of a ferromagnetic material.
  • the material of the battery case may be a ferromagnetic material.
  • the battery case is used to encapsulate the battery cells. Ferromagnetic materials are not used in common battery housings.
  • the embodiment of the present invention uses a ferromagnetic material such as iron, steel, nickel, cobalt or the like as a battery case design to further shield the magnetic field.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

Une batterie et un terminal selon le mode de réalisation de la présente invention concernent le domaine électronique. La batterie et le terminal permettent à un courant circulant dans une plaque positive et dans une plaque négative d'amplitude égale et de direction opposée de réduire le bruit de fond du champ magnétique. En outre, non seulement le coût de production de la batterie n'augmente pas, mais celui du terminal non plus. La batterie selon ce mode de réalisation comprend un cœur de batterie, et le cœur de batterie comprend la plaque positive, un séparateur et la plaque négative empilés séquentiellement et enroulés, une languette positive en contact électrique avec la plaque positive et une languette négative en contact électrique avec la plaque cathodique. La batterie est caractérisée en ce que la languette positive et la languette négative se trouvent du même côté de la plaque positive et de la plaque négative, ce qui permet au courant circulant dans la plaque anodique et dans la plaque cathodique d'avoir une amplitude égale et une direction opposée.
PCT/CN2013/071751 2012-02-28 2013-02-22 Batterie et terminal WO2013127313A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210047704.5 2012-02-28
CN2012100477045A CN102544594A (zh) 2012-02-28 2012-02-28 一种电池及终端

Publications (1)

Publication Number Publication Date
WO2013127313A1 true WO2013127313A1 (fr) 2013-09-06

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Country Status (2)

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CN (1) CN102544594A (fr)
WO (1) WO2013127313A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108011134A (zh) * 2017-11-30 2018-05-08 东莞市朗泰通实业有限公司 一种高效镍氢电池
CN108615950A (zh) * 2018-07-06 2018-10-02 江苏卓高新材料科技有限公司 一种卷绕式电芯定型方法及定型装置
CN114094285A (zh) * 2021-11-15 2022-02-25 蜂巢能源科技有限公司 一种单侧极柱长电池及电能存储装置
CN114361674A (zh) * 2020-09-30 2022-04-15 南京泉峰科技有限公司 电池包
US12002931B2 (en) 2020-09-30 2024-06-04 Nanjing Chervon Industry Co., Ltd. Battery pack, power tool system, and charging system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102544594A (zh) * 2012-02-28 2012-07-04 华为终端有限公司 一种电池及终端
CN105957982A (zh) * 2016-05-27 2016-09-21 珠海光环新能源科技有限公司 可无线充电的助听器电池
CN112615039B (zh) * 2020-12-31 2022-05-17 广东微电新能源有限公司 一种电芯结构、电池以及电子设备
CN113394465B (zh) * 2021-06-08 2022-11-22 歌尔智能科技有限公司 一种卷绕式电池及tws蓝牙耳机

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US20110111267A1 (en) * 2009-11-11 2011-05-12 Van Schyndel Andre J Low noise battery with a magnetic compensation structure for wireless mobile communication device
CN102074725A (zh) * 2009-11-23 2011-05-25 捷讯研究有限公司 具有减小的磁漏的可再充电电池
US20110262787A1 (en) * 2010-04-23 2011-10-27 Hosein Maleki Electrochemical Cell with Reduced Magnetic Field Emission and Corresponding Devices
WO2012053557A1 (fr) * 2010-10-20 2012-04-26 三洋電機株式会社 Élément secondaire à électrolyte non aqueux
WO2012053556A1 (fr) * 2010-10-20 2012-04-26 三洋電機株式会社 Élément secondaire à électrolyte non aqueux
CN102544594A (zh) * 2012-02-28 2012-07-04 华为终端有限公司 一种电池及终端

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JP5218956B2 (ja) * 2007-12-11 2013-06-26 Ｎｅｃエナジーデバイス株式会社 角形密閉電池
JP5625051B2 (ja) * 2009-06-10 2014-11-12 ブラックベリー リミテッド ワイヤレスモバイル通信デバイスのための電池
EP2454769B1 (fr) * 2009-07-14 2018-10-10 BlackBerry Limited Batterie à faible interférence magnétique

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
US20110111267A1 (en) * 2009-11-11 2011-05-12 Van Schyndel Andre J Low noise battery with a magnetic compensation structure for wireless mobile communication device
CN102074725A (zh) * 2009-11-23 2011-05-25 捷讯研究有限公司 具有减小的磁漏的可再充电电池
US20110262787A1 (en) * 2010-04-23 2011-10-27 Hosein Maleki Electrochemical Cell with Reduced Magnetic Field Emission and Corresponding Devices
WO2012053557A1 (fr) * 2010-10-20 2012-04-26 三洋電機株式会社 Élément secondaire à électrolyte non aqueux
WO2012053556A1 (fr) * 2010-10-20 2012-04-26 三洋電機株式会社 Élément secondaire à électrolyte non aqueux
CN102544594A (zh) * 2012-02-28 2012-07-04 华为终端有限公司 一种电池及终端

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108011134A (zh) * 2017-11-30 2018-05-08 东莞市朗泰通实业有限公司 一种高效镍氢电池
CN108615950A (zh) * 2018-07-06 2018-10-02 江苏卓高新材料科技有限公司 一种卷绕式电芯定型方法及定型装置
CN114361674A (zh) * 2020-09-30 2022-04-15 南京泉峰科技有限公司 电池包
US12002931B2 (en) 2020-09-30 2024-06-04 Nanjing Chervon Industry Co., Ltd. Battery pack, power tool system, and charging system
CN114094285A (zh) * 2021-11-15 2022-02-25 蜂巢能源科技有限公司 一种单侧极柱长电池及电能存储装置
CN114094285B (zh) * 2021-11-15 2023-06-27 蜂巢能源科技有限公司 一种单侧极柱长电池及电能存储装置

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