WO2023221007A1 - 电池和具有该电池的终端设备 - Google Patents

电池和具有该电池的终端设备 Download PDF

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Publication number
WO2023221007A1
WO2023221007A1 PCT/CN2022/093701 CN2022093701W WO2023221007A1 WO 2023221007 A1 WO2023221007 A1 WO 2023221007A1 CN 2022093701 W CN2022093701 W CN 2022093701W WO 2023221007 A1 WO2023221007 A1 WO 2023221007A1
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WO
WIPO (PCT)
Prior art keywords
pole pieces
battery
pole
core assembly
pole piece
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PCT/CN2022/093701
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English (en)
French (fr)
Inventor
王硕
郗帅鹏
Original Assignee
北京小米移动软件有限公司
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Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/093701 priority Critical patent/WO2023221007A1/zh
Priority to CN202280004427.1A priority patent/CN117693850A/zh
Publication of WO2023221007A1 publication Critical patent/WO2023221007A1/zh

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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
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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

Definitions

  • the present disclosure relates to the field of battery technology, and in particular, to a battery and a terminal device having the battery.
  • the circuit protection board (PCM board) is used to protect the charge and discharge of the series lithium battery pack. It can protect the battery pack from over-discharge, overcharge, over-current and output short circuit problems.
  • PCM board In related technologies, the space on the PCM board cannot meet the needs of dense electronic components and wiring, and there are problems such as weak current carrying capacity and small system heat dissipation area.
  • the present disclosure aims to solve one of the technical problems in the related art, at least to a certain extent.
  • embodiments of the present disclosure propose a battery and a terminal device having the battery.
  • the battery has the advantage of improving the current carrying capacity and heat dissipation performance of the protective board.
  • An embodiment of the present disclosure also provides a terminal device.
  • the battery in the embodiment of the present disclosure includes a battery cell assembly and a circuit protection board.
  • the battery core assembly has a first end and a second end oppositely arranged in its length direction.
  • the circuit protection plate includes a body and a thickened portion.
  • the circuit protection plate is provided at the first end of the battery core assembly.
  • the body has a first surface and a second surface arranged oppositely in the thickness direction of the battery core assembly, the thickened portion is provided on the first surface, and the size of the body in the preset direction is larger than the The size of the thickened portion in the preset direction is such that the circuit protection plate forms an avoidance portion in the thickness direction of the battery core assembly.
  • the size of the circuit protection plate in the thickness direction of the battery core assembly (the size of the circuit protection plate along the thickness direction of the battery core assembly) can be reduced.
  • Increasing the size can increase its current carrying capacity and conductivity), thereby increasing the current carrying capacity of the protective plate, thus improving the battery's fast charging performance.
  • the thickened portion also increases the heat dissipation area of the circuit protection board, thus improving the heat dissipation performance of the battery during operation.
  • the battery according to the embodiment of the present disclosure has the advantage of improving the current carrying capacity and heat dissipation performance of the protective plate.
  • the size of the circuit protection plate in the width direction of the battery core assembly is less than or equal to the width of the battery core assembly.
  • the size of the body in the width direction of the battery core assembly is larger than the size of the thickened portion in the width direction of the battery core assembly, so that the circuit protection plate is in the width direction of the battery core assembly.
  • An escape part is formed in the thickness direction.
  • the sum of the size of the body in the thickness direction of the battery core assembly and the size of the thickened portion in the thickness direction of the battery core assembly is smaller than the thickness of the battery core assembly.
  • the battery core assembly includes a first group of pole pieces and a second group of pole pieces, and the first group of pole pieces and the second group of pole pieces are stacked along the thickness direction of the battery core assembly. , the first set of pole pieces and the second set of pole pieces form steps in the width direction of the battery core assembly, the body and the first set of pole pieces and the second set of pole pieces At least one is connected.
  • the width of the first set of pole pieces is less than the width of the second set of pole pieces
  • the length of the first set of pole pieces is equal to the length of the second set of pole pieces
  • the third set of pole pieces One end of one set of pole pieces in the length direction and one end of the second set of pole pieces in the length direction are aligned in the length direction of the battery core assembly, and the body is aligned in the width direction of the battery core assembly.
  • the size is smaller than the width of the second set of pole pieces.
  • one end of the first set of pole pieces in the width direction and one end of the second set of pole pieces in the width direction are aligned in the width direction of the battery cell assembly.
  • the first set of pole pieces has a first pole piece adjacent to the second set of pole pieces, and the second set of pole pieces has a third pole piece adjacent to the first set of pole pieces.
  • Two pole pieces, each of the first pole piece and the second pole piece is a single-sided positive pole piece; or the first pole piece is a double-sided positive pole piece, and the second pole piece is a double-sided positive pole piece. Negative plate.
  • the second electrode sheet is the double-sided negative electrode sheet
  • the double-sided negative electrode sheet includes a foil layer and a first active layer and a second active layer disposed on both sides of the foil layer, and the first The active layer is connected to the positive electrode piece of the first group of pole pieces, and the area of the first active layer is greater than or equal to the area of the first pole piece.
  • the battery further includes an electronic device, the electronic device includes a connector and a component, the connector is connected to the component, and the connector is provided in the first surface.
  • the terminal device of the embodiment of the present disclosure may include the battery described in any of the above embodiments.
  • Figure 1 is a perspective view of a battery according to one embodiment of the present disclosure.
  • FIG. 2 is an enlarged view of position A in FIG. 1 .
  • Figure 3 is another perspective view of a battery according to an embodiment of the present disclosure.
  • Figure 4 is yet another perspective view of the battery according to the embodiment of the present disclosure.
  • Figure 5 is a cross-sectional view of two positive electrode sheets of the present disclosure.
  • Figure 6 is a cross-sectional view of a double-sided negative electrode sheet of the present disclosure.
  • Figure 7 is a cross-sectional view of another double-sided negative electrode sheet of the present disclosure.
  • Battery core assembly 1 first set of pole pieces 11; second set of pole pieces 12; first side 13; second side 14; step 15; first end 16; second end 17;
  • Circuit protection board 2 body 21; thickened portion 22; avoidance portion 23;
  • the battery 100 of the embodiment of the present disclosure is described below with reference to FIGS. 1-7 .
  • the battery 100 in the embodiment of the present disclosure includes a battery cell assembly 1 and a circuit protection board 2 .
  • the battery core assembly 1 has a first end 16 and a second end 17 arranged oppositely in its length direction.
  • the circuit protection plate 2 includes a body 21 and a thickened portion 22 .
  • the circuit protection plate 2 is provided at the first end of the battery core assembly 1 16.
  • the body 21 has a first surface 13 (for example, the upper side in Figure 1) and a second surface 14 (for example, the lower side in Figure 2) that are oppositely arranged in the thickness direction of the battery cell assembly 1, and the thickened portion 22 is provided On the first side 13 , the size of the main body 21 in a preset direction (for example, the preset direction can be the width direction or the length direction of the cell assembly 1 ) is larger than the size of the thickened portion 22 in the preset direction so that the circuit protection board 2 can A relief portion 23 is formed in the thickness direction of the battery cell assembly 1 .
  • the thickened portion 22 on the body 21 of the circuit protection plate 2, the size of the circuit protection plate 2 in the thickness direction of the battery cell assembly 1 (the circuit protection plate 2 is along the thickness direction of the battery cell assembly) can be reduced. 1. Increasing the size in the thickness direction can increase its current carrying capacity and conductive capacity), thereby increasing the current carrying capacity of the protective plate, thereby improving the fast charging performance of the battery 100. In addition, the thickened portion 22 also increases the heat dissipation area of the circuit protection board 2, thereby improving the heat dissipation performance of the battery 100 during operation.
  • the battery 100 according to the embodiment of the present disclosure has the advantage of improving the current carrying capacity and heat dissipation performance of the protective plate.
  • the up-down direction in FIG. 1 is taken as the height direction of the battery 100 according to the embodiment of the present disclosure
  • the left-right direction in FIG. 1 is taken as the width direction of the battery cell assembly 1
  • the front-to-back direction in FIG. length direction is taken as the up-down direction in FIG. 1
  • the size of the circuit protection board 2 in the width direction of the battery cell assembly 1 is less than or equal to the width of the battery cell assembly 1 .
  • the thickened portion 22 is provided on the upper surface of the body 21 , and the dimensions of the body 21 and the thickened portion 22 in the width direction of the battery cell assembly 1 are both less than or equal to the width of the battery cell assembly 1 .
  • the size of the body 21 in the width direction of the battery cell assembly 1 is less than or equal to the length of the battery cell assembly 1.
  • the circuit protection board 2 can be prevented from being damaged.
  • Excessive size in the width direction of the cell assembly 1 causes installation interference problems.
  • the rationality of the structure of the battery 100 is improved.
  • the size of the main body 21 in the width direction of the battery cell assembly 1 is larger than the size of the thickened portion 22 in the width direction of the battery cell assembly 1 , so that the circuit protection plate 2 is in the thickness direction of the battery cell assembly 1
  • An escape part 23 is formed on the upper part.
  • an escape portion 23 is formed on the main body 21 and the thickened portion 22 in the thickness direction of the battery cell assembly 1.
  • components can be arranged in the escape portion 23, thereby avoiding problems caused by the battery 100.
  • the thickness of the body 21 is too large, causing the components provided on the circuit protection board 2 to protrude from the surface of the battery 100 in the thickness direction of the battery 100 .
  • the sum of the dimensions of the body 21 in the thickness direction of the battery cell assembly 1 and the thickness of the thickened portion 22 in the thickness direction of the battery cell assembly 1 is smaller than the thickness of the battery cell assembly 1 .
  • components with larger sizes in the thickness direction of the battery cell assembly 1 can be arranged in the avoidance portion 23 according to the actual situation, so as to ensure that the thickness of the circuit protection board 2 remains unchanged. to reduce the influence of components on the thickness of the circuit protection board 2. As a result, the current carrying capacity and heat dissipation performance of the protection board can be further improved.
  • the battery core assembly 1 includes a first set of pole pieces 11 and a second set of pole pieces 12.
  • the first set of pole pieces 11 and the second set of pole pieces 12 are stacked along the thickness direction of the battery core assembly 1. It is arranged that the first set of pole pieces 11 and the second set of pole pieces 12 form a step 15 in the width direction of the cell assembly 1, and the body 21 is connected to at least one of the first set of pole pieces 11 and the second set of pole pieces 12. .
  • the overall thickness of the battery 100 is usually reduced by reducing the number of pole pieces to avoid interference between the cell assembly 1 and related components.
  • reducing the number of pole pieces will result in low capacity of the battery 100 and corresponding terminal equipment space utilization. The problem of low rates.
  • the terminal device of the embodiment of the present disclosure has the advantage that the battery 100 has a high capacity.
  • the battery cell assembly 1 can occupy as much space as possible in the battery compartment of the battery 100 , which has the advantage of improving the space utilization of the battery compartment of the battery 100 . Therefore, the battery 100 according to the embodiment of the present disclosure has the advantage of improving space utilization and the capacity of the battery 100 .
  • the thickened portion 22 is provided correspondingly to the first set of pole pieces 11
  • the body 21 is provided correspondingly to the second set of pole pieces 12 .
  • the width of the first set of pole pieces 11 is smaller than the width of the second set of pole pieces 12
  • the length of the first set of pole pieces 11 is equal to the length of the second set of pole pieces 12
  • the first set of pole pieces One end of the piece 11 in its length direction and one end of the second group of pole pieces 12 in its length direction are aligned in the length direction of the cell assembly 1, and the size of the body 21 in the width direction of the cell assembly 1 is smaller than that of the second group.
  • the step 15 is formed on the left and/or right side of the battery cell assembly 1 , which is a flat surface at the first end 16 and the second end 17 .
  • the step 15 is formed on the left or right side of the battery cell assembly 1.
  • the battery 100 may be placed close to one side (left or right) of the curved screen. According to the need for avoidance, the step 15 can be placed on one side of the battery cell assembly 1. Setting the steps 15 improves the rationality of the structure of the battery 100 and helps optimize the space of the battery compartment.
  • the first set of pole pieces 11 has a first pole piece adjacent to the second set of pole pieces 12, and the second set of pole pieces 12 has a second set of pole pieces adjacent to the first set of pole pieces 11.
  • the pole piece, each of the first pole piece and the second pole piece is a single-sided positive pole piece; or, the first pole piece is a double-sided positive pole piece, and the second pole piece is a double-sided negative pole piece.
  • the battery 100 of the embodiment of the present disclosure has the advantage of facilitating the stacking of the pole pieces by aligning one end of the first set of pole pieces 11 in the width direction with one end of the second set of pole pieces 12 in the width direction in a preset direction. advantage. In addition, the installation convenience of the battery 100 with the battery cell assembly 1 can be improved.
  • the first set of pole pieces 11 has a first pole piece adjacent to the second set of pole pieces 12, and the second set of pole pieces 12 has a second pole piece adjacent to the first set of pole pieces 11,
  • Each of the first pole piece and the second pole piece is a single-sided positive pole piece.
  • the first pole piece in the first group of pole pieces 11 is connected to the second pole piece in the second group of pole pieces 12 .
  • the double-sided negative electrode sheet includes a layer of isolation film and negative electrode active layers coated on both sides of the isolation film;
  • the double-sided positive electrode sheet includes a layer of isolation film and positive electrodes coated on both sides of the isolation film. active layer.
  • the first set of pole pieces 11 has a first pole piece adjacent to the second set of pole pieces 12
  • the second set of pole pieces 12 has a first pole piece adjacent to the second set of pole pieces 12
  • a set of pole pieces 11 is adjacent to a second pole piece
  • the first pole piece is a double-sided positive pole piece, for example, as shown in Figures 6 and 7
  • the second pole piece is a double-sided negative pole piece.
  • the first pole piece is a double-sided positive pole piece
  • the second pole piece is a double-sided negative pole piece
  • a single-sided positive pole piece is provided relative to both the first pole piece and the second pole piece.
  • the thickness of the two-layer single-sided positive electrode sheet is equal to the thickness of the two layers of isolation film plus the thickness of the two layers of active layers.
  • the two-layer single-sided positive electrode sheet H1 is equal to the thickness H2 of the two two-layer active layers plus the two isolation films H3, that is, H1 is equal to 2H2+2H3, and the thickness of the double-sided positive electrode sheet is equal to one layer.
  • the thickness of the isolation film plus the thickness of the two active layers means that when the number of layers of the cell assembly 1 is the same, the battery 100 of the embodiment of the present disclosure has the advantage of further saving space. Therefore, when the battery compartment space is limited, the battery 100 of the embodiment of the present disclosure has the advantage of large capacity of the battery cell assembly 1 .
  • the second pole piece is a double-sided negative pole piece.
  • the double-sided negative pole piece includes a foil layer and a first active layer and a second active layer disposed on both sides of the foil layer.
  • the first active layer and the second active layer are arranged on both sides of the foil layer.
  • the positive electrode pieces 1 of a group of pole pieces 11 are connected, and the area of the first active layer is equal to the area of the first pole piece.
  • the battery 100 also includes an electronic device.
  • the electronic device includes a connector 3 and a component 4.
  • the connector 3 is connected to the component 3, and the connector 3 is provided in the first surface.
  • the terminal device of the embodiment of the present disclosure may include the battery described in any of the above embodiments. Therefore, the terminal equipment according to the embodiment of the present disclosure has the advantage of improving the current carrying capacity and heat dissipation performance of the protection board.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • connection In this disclosure, unless otherwise explicitly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be mechanically connected, electrically connected or communicable with each other; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction between two elements, Unless otherwise expressly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.
  • a first feature being “on” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features may be in indirect contact through an intermediary. touch.
  • the terms “above”, “above” and “above” the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.
  • the terms “one embodiment,” “some embodiments,” “example,” “specific examples,” or “some examples” or the like mean that a particular feature, structure, material, or other feature is described in connection with the embodiment or example.
  • Features are included in at least one embodiment or example of the disclosure.
  • the schematic expressions of the above terms are not necessarily directed to the same embodiment or example.
  • the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
  • those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

提供一种电池(100)和具有该电池(100)的终端设备。其中，电池(100)包括电芯组件(1)和保护板(2)，电芯组件(1)具有在其长度方向上相对布置的第一端(16)和第二端(17)，保护板(2)包括本体(21)和增厚部(22)，保护板(2)设在电芯组件(1)的第一端(16)，本体(21)在电芯组件(1)的厚度方向上具有相对设置的第一面(13)和第二面(14)，增厚部(22)设置在第一面(13)。因此，电池(100)具有提升保护板(2)对电流的承载能力和散热性能的优点。

Description

电池和具有该电池的终端设备 技术领域
本公开涉及电池技术领域，具体地，涉及一种电池和具有该电池的终端设备。
背景技术
电路保护板(PCM板)是用于对串联锂电池组进行充放电保护，可以保护电池组避免过放、过充、过流以及输出短路的问题。相关技术中，PCM板上的空间难以能满足密集的电子元件和布线需求，存在电流承载能力弱和系统散热面积小的问题。
发明内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的实施例提出一种电池和具有该电池的终端设备。该电池具有提升保护板对电流的承载能力和散热性能的优点。
本公开的实施例还提出一种终端设备。
本公开实施例的电池包括电芯组件和电路保护板。
所述电芯组件具有在其长度方向上相对布置的第一端和第二端，所述电路保护板包括本体和增厚部，所述电路保护板设在所述电芯组件的第一端，所述本体在所述电芯组件的厚度方向上具有相对设置的第一面和第二面，所述增厚部设置在所述第一面，所述本体在预设方向的尺寸大于所述增厚部在所述预设方向的尺寸以使所述电路保护板在所述电芯组件的厚度方向上形成避让部。
本公开实施例的电池，通过在所述电路保护板的本体上设置增厚部，可以电路保护板在在所述电芯组件的厚度方向上的尺寸(电路保护板沿电芯组件厚度方向的尺寸增加可以增加其载流量和导电能力)，进而增加保护板对电流的承载能力，由此，提升电池的快充电性能。此外设置的增厚部还增大电路保护板的散热面积，由此提升了电池在工作过程中的散热性能。
因此，本公开实施例的电池具有提升保护板对电流的承载能力和散热性能的优点。
在一些实施例中，所述电路保护板在所述电芯组件的宽度方向的尺寸小于等于所述电芯组件的宽度。
在一些实施例中，所述本体在所述电芯组件的宽度方向的尺寸大于所述增厚部在所述电芯组件的宽度方向的尺寸，以便所述电路保护板在所述电芯组件的厚度方向上形成避让部。
在一些实施例中，所述本体在所述电芯组件的厚度方向的尺寸与所述增厚部在所述电芯组件的厚度方向的尺寸之和小于所述电芯组件的厚度。
在一些实施例中，所述电芯组件包括第一组极片和第二组极片，所述第一组极片和所 述第二组极片沿所述电芯组件的厚度方向层叠设置，所述第一组极片与所述第二组极片在所述电芯组件的宽度方向上形成台阶，所述本体与所述第一组极片和所述第二组极片中的至少一者相连。
在一些实施例中，所述第一组极片的宽度小于所述第二组极片的宽度，所述第一组极片的长度等于所述第二组极片的长度，且所述第一组极片在其长度方向上的一端与所述第二组极片在其长度方向上的一端在所述电芯组件的长度方向上对齐，所述本体在所述电芯组件的宽度方向的尺寸小于所述第二组极片的宽度。
在一些实施例中，所述第一组极片在其宽度方向上的一端与所述第二组极片在其宽度方向上的一端在所述电芯组件的宽度方向上对齐。
在一些实施例中，所述第一组极片具有与所述第二组极片相邻的第一极片，所述第二组极片具有与所述第一组极片相邻的第二极片，所述第一极片和所述第二极片中的每一者为单面正极片；或者，所述第一极片为双面正极片，所述第二极片为双面负极片。
在一些实施例中，第二极片为所述双面负极片，所述双面负极片包括箔层和设置所述箔层两侧的第一活性层和第二活性层，所述第一活性层与所述第一组极片的所述正极片相连，所述第一活性层的面积大于等于所述第一极片的面积。
在一些实施例中，所述的电池还包括电子器件，所述电子器件包括连接器和元器件，所述连接器与所述元器件相连，所述连接器设在所述第一面内。
本公开实施例的终端设备可以包括上述任一项实施例所述的电池。
附图说明
图1是本公开一个实施例的电池的立体图。
图2是图1中在A处的放大图。
图3是本公开实施例的电池的另一立体图。
图4是本公开实施例的电池的再一立体图。
图5是本公开两个正极片的剖视图。
图6是本公开一个双面负极片的剖视图。
图7是本公开另一个双面负极片的剖视图。
附图标记：
电池100；
电芯组件1；第一组极片11；第二组极片12；第一面13；第二面14；台阶15；第一端16；第二端17；
电路保护板2；本体21；增厚部22；避让部23；
连接器3；
电子元器件4。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
下面参考图1-图7描述本公开实施例的电池100。
本公开实施例的电池100包括电芯组件1和电路保护板2。
电芯组件1具有在其长度方向上相对布置的第一端16和第二端17，电路保护板2包括本体21和增厚部22，电路保护板2设在电芯组件1的第一端16，本体21在电芯组件1的厚度方向上具有相对设置的第一面13(例如，图1中上侧)和第二面14(例如，图2中下侧)，增厚部22设置在第一面13，本体21在预设方向(例如，预设方向可以电芯组件1的宽度方向或长度方向)的尺寸大于增厚部22在预设方向的尺寸以使电路保护板2在电芯组件1的厚度方向上形成避让部23。
本公开实施例的电池100，通过在电路保护板2的本体21上设置增厚部22，可以电路保护板2在在电芯组件1的厚度方向上的尺寸(电路保护板2沿电芯组件1厚度方向的尺寸增加可以增加其载流量和导电能力)，进而增加保护板对电流的承载能力，由此，提升电池100的快充电性能。此外设置的增厚部22还增大电路保护板2的散热面积，由此，提升了电池100在工作过程中的散热性能。
因此，本公开实施例的电池100具有提升保护板对电流的承载能力和散热性能的优点。
为了便于描述，下面将图1中的上下方向作为本公开实施例的电池100的高度方向，图1中的左右方向作为电芯组件1的宽度方向，图1中的前后方向作为电芯组件1的长度方向。
如图1和图2所示，电路保护板2在电芯组件1的宽度方向的尺寸小于等于电芯组件1的宽度。换言之，增厚部22设置在本体21的上表面，本体21和增厚部22在电芯组件1的宽度方向的尺寸均小于等于电芯组件1的宽度。
本公开实施例的电池100，通过本体21在电芯组件1的宽度方向的尺寸小于等于电芯组件1的长度，在电池100的电池仓宽度一定的情况下，可以避免因电路保护板2的在电芯组件1的宽度方向的尺寸过大造成安装干涉的问题。由此，提升了电池100结构的合理性。
如图1和图2所示，本体21在电芯组件1的宽度方向的尺寸大于增厚部22在电芯组件1的宽度方向的尺寸，以便电路保护板2在电芯组件1的厚度方向上形成避让部23。
本公开实施例的电池100，在本体21和增厚部22在电芯组件1的厚度方向上形成避让部23，通过形成的避让部23，可以在避让部23内布设元器件，可以避免因本体21的厚度过大，造成设置在电路保护板2上的元器件在电池100厚度方向上伸出电池100的表面。以此避免因电路保护板2的在电芯组件1的厚度方向的尺寸过大造成元器件占用电池100的电池仓厚度方向上的空间。由此，本公开实施例的电池100具有电池100结构的合理性的优点。
如图1和图2所示，本体21在电芯组件1的厚度方向的尺寸与增厚部22在电芯组件1的厚度方向的尺寸之和小于电芯组件1的厚度。
本公开实施例的电池100，可以根据实际实际情况，将在电芯组件1的厚度方向的尺寸较大的元件器布设在避让部23内，以此保证电路保护板2的厚度不变的情况下，消减元件 器对电路保护板2厚度的影响。由此，可以进一步提升保护板对电流的承载能力和散热性能的优点。
如图1和图3所示，电芯组件1包括第一组极片11和第二组极片12，第一组极片11和第二组极片12沿电芯组件1的厚度方向层叠设置，第一组极片11与第二组极片12在电芯组件1的宽度方向上形成台阶15，本体21与第一组极片11和第二组极片12中的至少一者相连。
终端设备用于放置电芯组件1的部位具有相关的元器件(例如，曲面屏)与电芯组件1之间存在安装干涉。通常通过缩减极片的数量的方式来降低电池100的整体厚度，以避免电芯组件1与相关元器件之间的干涉，但减少极片的数量存在电池100容量低和相应的终端设备空间利用率低的问题。
本公开实施例的电池100，通过在第一组极片11与第二组极片12在电芯组件1的宽度方向上形成台阶15，可以缩减极片数量的基础上避免与相关的元器件之间的干涉。因此，本公开实施例的终端设备具有电池100容量高的优点。此外，因没有减少极片数量，电芯组件1可以尽可能的占用电池100的电池仓的空间，具有提升电池100的电池仓的空间利用率的优点。由此，本公开实施例的电池100具有提升空间利用率和电池100的容量优点。
具体地，增厚部22与第一组极片11对应地设置，本体21与第二组极片12对应地设置。
如图1和图3所示，第一组极片11的宽度小于第二组极片12的宽度，第一组极片11的长度等于第二组极片12的长度，且第一组极片11在其长度方向上的一端与第二组极片12在其长度方向上的一端在电芯组件1的长度方向上对齐，本体21在电芯组件1的宽度方向的尺寸小于第二组极片12的宽度。换言之，台阶15形成在电芯组件1的左侧和/或右侧，电芯组件1在第一端16和第二端17是平整面。
本公开实施例的电池100，通过在电芯组件1的宽度方向上设置台阶15，可以对曲面屏的安装进行空间上的避让，具有进一步提升电池100容量的优点。
例如，第一组极片11在其宽度方向上的一端与第二组极片12在其宽度方向上的一端在电芯组件1的宽度方向上对齐。换言之，台阶15形成在电芯组件1的左侧或右侧，一般电池100可能靠近曲面屏的一侧(左侧或右侧)设置，可以根据避让的需要，在电芯组件1的一侧设置台阶15，提升了电池100结构的合理性，有利于优化电池仓的空间。
如图5和图6所示，第一组极片11具有与第二组极片12相邻的第一极片，第二组极片12具有与第一组极片11相邻的第二极片，第一极片和第二极片中的每一者为单面正极片；或者，第一极片为双面正极片，第二极片为双面负极片。
本公开实施例的电池100，通过第一组极片11在其宽度方向上的一端与第二组极片12在其宽度方向上的一端在预设方向上对齐，具有方便极片的层叠的优点。此外，可以提升具有该电芯组件1的电池100安装的便捷性。
如图5所示，第一组极片11具有与第二组极片12相邻的第一极片，第二组极片12具有与第一组极片11相邻的第二极片，第一极片和第二极片中的每一者为单面正极片。换言 之，第一组极片11中的第一极片与第二组极片12的第二极片相连。需要说明的是，双面负极片包括一层隔离膜和涂在该隔离膜的两侧表面的负极活性层；双面正极片包括一层隔离膜和涂在该隔离膜的两侧表面的正极活性层。
本公开实施例的电池100不限于此，例如在另一些实施例中，第一组极片11具有与第二组极片12相邻的第一极片，第二组极片12具有与第一组极片11相邻的第二极片，第一极片为双面正极片，例如图6和7所示，第二极片为双面负极片。
本公开实施例的电池100，通过第一极片为双面正极片，第二极片为双面负极片，相对于第一极片和第二极片均设置单面正极片方式，实质上相当于一个双面正极片，但是两层的单面正极片的厚度等于两层隔离膜的厚度加上两层活性层的厚度。例如，图5中所示的，两层单面正极片H1等于两个两层活性层的厚度H2加上两个隔离膜H3，即H1等于2H2+2H3，双面正极片的厚度等于一层隔离膜的厚度加上两层活性层的厚度，在电芯组件1层数相同的情况，本公开实施例的电池100具有进一步节省空间的优点。因此，在电池仓空间一定的情况下，本公开实施例的电池100具有电芯组件1容量大的优点。
如图5和图7所示，第二极片为双面负极片，该双面负极片包括箔层和设置箔层两侧的第一活性层和第二活性层，第一活性层与第一组极片11的正极片1相连，第一活性层的面积等于第一极片的面积。
如图1和图3所示，电池100还包括电子器件，电子器件包括连接器3和元器件4，连接器3与元器件3相连，连接器3设在第一面内。
本公开实施例的终端设备可以包括上述任一项实施例所述的电池。因此，本公开实施例的终端设备具有提升保护板对电流的承载能力和散热性能的优点。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“纵向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本公开中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本公开中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以 是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本公开中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管已经示出和描述了上述实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域普通技术人员对上述实施例进行的变化、修改、替换和变型均在本公开的保护范围内。

Claims (11)

  1. 一种电池，其特征在于，包括：
    电芯组件，所述电芯组件具有在其长度方向上相对布置的第一端和第二端；
    电路保护板，所述电路保护板包括本体和增厚部，所述电路保护板设在所述电芯组件的第一端，所述本体在所述电芯组件的厚度方向上具有相对设置的第一面和第二面，所述增厚部设置在所述第一面，所述本体在预设方向的尺寸大于所述增厚部在所述预设方向的尺寸以使所述电路保护板在所述电芯组件的厚度方向上形成避让部。
  2. 根据权利要求1所述的电池，其特征在于，所述电路保护板在所述电芯组件的宽度方向的尺寸小于等于所述电芯组件的宽度。
  3. 根据权利要求2所述的电池，其特征在于，所述本体在所述电芯组件的宽度方向的尺寸大于所述增厚部在所述电芯组件的宽度方向的尺寸以使所述电路保护板在所述电芯组件的厚度方向上形成避让部。
  4. 根据权利要求3所述的电池，其特征在于，所述本体在所述电芯组件的厚度方向的尺寸与所述增厚部在所述电芯组件的厚度方向的尺寸之和小于所述电芯组件的厚度。
  5. 根据权利要求1-4中任一项所述的电池，其特征在于，所述电芯组件包括第一组极片和第二组极片，所述第一组极片和所述第二组极片沿所述电芯组件的厚度方向层叠设置，所述第一组极片与所述第二组极片在所述电芯组件的宽度方向上形成台阶，所述本体与所述第一组极片和所述第二组极片中的至少一者相连。
  6. 根据权利要求5所述的电池，其特征在于，所述第一组极片的宽度小于所述第二组极片的宽度，所述第一组极片的长度等于所述第二组极片的长度，且所述第一组极片在其长度方向上的一端与所述第二组极片在其长度方向上的一端在所述电芯组件的长度方向上对齐，所述本体在所述电芯组件的宽度方向的尺寸小于所述第二组极片的宽度。
  7. 根据权利要求6所述的电池，其特征在于，所述第一组极片在其宽度方向上的一端与所述第二组极片在其宽度方向上的一端在所述电芯组件的宽度方向上对齐。
  8. 根据权利要求5所述的电池，其特征在于，所述第一组极片具有与所述第二组极片相邻的第一极片，所述第二组极片具有与所述第一组极片相邻的第二极片，所述第一极片和所述第二极片中的每一者为单面正极片；或者，所述第一极片为双面正极片，所述第二极片为双面负极片。
  9. 根据权利要求8所述的电池，其特征在于，第二极片为所述双面负极片，所述双面负极片包括箔层和设置所述箔层两侧的第一活性层和第二活性层，所述第一活性层与所述第一组极片的所述正极片相连，所述第一活性层的面积大于等于所述第一极片的面积。
  10. 根据权利要求1-4中任一项所述的电池，其特征在于，还包括电子器件，所述电子器件包括连接器和元器件，所述连接器与所述元器件相连，所述连接器设在所述第一面内。
  11. 一种终端设备，其特征在于，包括根据权利要求1-10中任一项所述的电池。
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CN214848757U (zh) * 2021-06-04 2021-11-23 东莞新能德科技有限公司 电池保护板及电池
CN215955431U (zh) * 2021-07-27 2022-03-04 Oppo广东移动通信有限公司 电池的保护板部件、电池及电子设备

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