WO2022117098A1 - 扣式电池及电子设备 - Google Patents

扣式电池及电子设备 Download PDF

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Publication number
WO2022117098A1
WO2022117098A1 PCT/CN2021/135533 CN2021135533W WO2022117098A1 WO 2022117098 A1 WO2022117098 A1 WO 2022117098A1 CN 2021135533 W CN2021135533 W CN 2021135533W WO 2022117098 A1 WO2022117098 A1 WO 2022117098A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductive member
accommodating cavity
top cover
boss
button
Prior art date
Application number
PCT/CN2021/135533
Other languages
English (en)
French (fr)
Inventor
彭宁
Original Assignee
珠海冠宇电池股份有限公司
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 珠海冠宇电池股份有限公司 filed Critical 珠海冠宇电池股份有限公司
Priority to EP21900120.3A priority Critical patent/EP4156386A4/en
Priority to KR1020227043973A priority patent/KR20230011378A/ko
Priority to JP2022580363A priority patent/JP2023531752A/ja
Publication of WO2022117098A1 publication Critical patent/WO2022117098A1/zh
Priority to US18/069,633 priority patent/US20230120563A1/en

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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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • H01M50/645—Plugs
    • 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
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
    • 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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/153—Lids or covers characterised by their shape for button or coin 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/181—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for button or coin 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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 utility model relates to the technical field of batteries, in particular to a button-type battery and electronic equipment.
  • Button battery refers to a battery with a size like a button, generally speaking, the diameter is larger and the thickness is thinner. Because of its small size, button batteries have been widely used in various miniature electronic devices, such as wearable electronic devices and medical products.
  • a button battery includes a casing, a conductive member and a sealing member.
  • the casing is provided with a through hole that communicates with the cavity for accommodating the electrolyte, the conductive member is covered on the through hole and is arranged on the outside of the button battery, and the conductive member and the casing are pasted on the casing through a sealing rubber ring on; the cover of the sealing member is arranged on the liquid injection port of the conductive member.
  • the existing button-type battery has the problem of low safety and reliability.
  • the utility model provides a button-type battery and electronic equipment to solve the problem of low safety and reliability of the existing button-type battery.
  • the present invention provides a button-type battery, comprising: a casing and a cover plate assembly;
  • the housing includes a bottom wall and an annular side wall, and the bottom end of the side wall is integrally formed with the bottom wall;
  • the cover plate assembly includes a top cover with a through hole in a central region, and a conductive member covering the through hole, and the conductive member is insulated from the top cover;
  • the outer edge of the top cover is welded with the top end of the side wall to form a accommodating cavity for accommodating the electrode assembly and the electrolyte.
  • the outer surface of the outer edge of the top cover has a welding mark, and the welding penetration is from the top cover to the top. the direction of the side wall extends;
  • the conductive member is disposed on the side of the top cover facing the accommodating cavity.
  • the conductive member is provided with a liquid injection port for injecting electrolyte into the accommodating cavity;
  • the cover plate assembly further includes a sealing member for covering the liquid injection port, and the sealing member is located on the side of the conductive member facing away from the accommodating cavity.
  • the conductive member is provided with a boss pierced through the through hole, and the boss is provided on the surface where the conductive member abuts against the top cover; the The side of the conductive member facing the accommodating cavity is a plane.
  • the liquid injection port penetrates through the boss, and the center of the boss coincides with the center of the liquid injection port.
  • the contact area between the conductive member and the through hole is further increased, which not only improves the sealing between the conductive member and the through hole, but also improves the The ability of a conductive member to withstand the pressure within a coin cell battery.
  • the end face of the boss away from the accommodating cavity is flush with the end face of the housing away from the accommodating cavity; or, the boss away from the accommodating cavity The end face is between the end face of the casing away from the accommodating cavity and the end face of the casing close to the accommodating cavity.
  • a counterbore is provided at one end of the boss away from the accommodating cavity, the counterbore communicates with the liquid injection port, and the center of the counterbore is connected to the liquid injection The center of the mouth coincides.
  • the joint between the sealing member and the counterbore is welded on the outside of the casing, thereby improving the sealing performance between the sealing member and the liquid injection port.
  • the distance between the end face of the boss away from the accommodating cavity and the end face of the boss close to the accommodating cavity is 0.1 mm ⁇ 0.5 mm.
  • a sealing rubber ring is provided between the conductive member and the top cover.
  • a groove is provided on a side of the sealing member away from the accommodating cavity, the groove forms a thinning area, and the center of the thinning area is connected to the liquid injection port the center coincides.
  • the pressure in the button battery can be exhausted and depressurized from the thinning area, so that the pressure in the button battery can be discharged in advance, thereby reducing the destructive force caused by the battery explosion.
  • the present invention also provides an electronic device, comprising: an electronic device body and the button-type battery described in any one of the above, wherein the button-type battery provides electrical energy for the electronic device body.
  • the utility model provides a button-type battery and an electronic device, comprising: a casing and a cover plate assembly; the casing includes a bottom wall and an annular side wall, the bottom end of the side wall and the bottom wall are integrally formed; the cover plate assembly includes a middle area A top cover with a through hole, and a conductive member covered with a through hole, the conductive member is insulated and connected to the top cover; the outer edge of the top cover is welded with the top of the side wall to form a accommodating cavity for accommodating the electrode assembly and the electrolyte, and the top cover The outer surface of the outer edge has welding marks, and the welding penetration extends from the top cover to the side wall; the conductive member is arranged on the side of the top cover facing the accommodating cavity.
  • the pressing force of the conductive member on the top cover is greater than the adhesive force between the conductive member and the top cover disposed on the side of the top cover away from the accommodating cavity in the prior art In this way, the bearing capacity of the conductive member to the pressure in the button battery is increased, thereby reducing the destructive force caused by the battery explosion, thereby improving the safety and reliability of the button battery.
  • Fig. 1 is the first structural schematic diagram of the button battery provided by the utility model
  • FIG. 2 is a schematic structural diagram of a conductive member in the button battery provided in FIG. 1;
  • FIG. 3 is a schematic diagram of a second structure of the button battery provided by the utility model
  • FIG. 4 is a schematic structural diagram of a conductive member in the button battery provided in FIG. 3;
  • FIG. 5 is a schematic diagram of a third structure of the button battery provided by the present invention.
  • FIG. 6 is a schematic structural diagram of a conductive member in the button battery provided in FIG. 5;
  • Fig. 7 is the first structural schematic diagram of the sealing member provided by the utility model
  • Fig. 8 is the sectional structure schematic diagram of the sealing member in Fig. 7;
  • Fig. 9 is the second structure schematic diagram of the sealing member provided by the utility model.
  • Fig. 10 is the sectional structure schematic diagram of the sealing member in Fig. 9;
  • Fig. 11 is the third structural schematic diagram of the sealing member provided by the utility model.
  • Figure 12 is a schematic cross-sectional structure diagram of the sealing member in Figure 11;
  • Fig. 13 is the third structural schematic diagram of the sealing member provided by the utility model
  • FIG. 14 is a schematic cross-sectional structural diagram of the sealing member in FIG. 13 .
  • references to the terms “one embodiment,” “some embodiments,” “illustrative embodiments,” “examples,” “specific examples,” or “some examples” and the like are meant to incorporate embodiments A particular feature, structure, material, or characteristic described or exemplified is included in at least one embodiment or example of the present invention.
  • schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
  • the terms “installation”, “connection”, “fixation” and other terms should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or a Integral; may be mechanically or electrically connected or communicable with each other; may be directly connected or indirectly connected through an intermediate medium, may be internal communication between two elements or an interactive relationship between two elements, unless otherwise clearly defined.
  • the specific meanings of the above terms in the present invention can be understood according to specific situations.
  • a first feature "on” or “under” a second feature may be in direct contact with the first and second features, or the first and second features through an intermediary indirect contact.
  • a first feature being “above”, “above” and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • Button battery refers to a battery with a size like a button, generally speaking, the diameter is larger and the thickness is thinner. Because of its small size, button batteries have been widely used in various miniature electronic devices, such as wearable electronic devices and medical products.
  • a button battery includes a casing, a conductive member and a sealing member.
  • the casing is provided with a through hole that communicates with the cavity for accommodating the electrolyte, the conductive member is covered on the through hole and is arranged on the outside of the button battery, and the conductive member and the casing are pasted on the casing through a sealing rubber ring on; the cover of the sealing member is arranged on the liquid injection port of the conductive member.
  • the inside of the button-type battery belongs to a closed space, the existing button-type battery has the problem of low safety and reliability.
  • the present invention provides a button-type battery and an electronic device, wherein the conductive member is disposed on the side of the top cover facing the accommodating cavity, and the pressing force of the conductive member on the top cover is greater than that of the top cover disposed on the top cover in the prior art
  • the adhesive force between the conductive member and the top cover on the side away from the accommodating cavity increases the bearing capacity of the conductive member to the pressure in the button battery, thereby reducing the destructive force caused by the explosion of the battery, and further The safety and reliability of the button-type battery is improved.
  • buttons-type battery and electronic device provided by the present invention will be described in detail below with reference to specific embodiments.
  • FIG. 1 is a schematic structural diagram of a first type of button battery provided by the present invention
  • FIG. 2 is a schematic structural diagram of a conductive member in the button battery provided in FIG. 1 .
  • the utility model provides a button battery, comprising: a casing 10 and a cover plate assembly 20; the casing 10 includes a bottom wall 11 and an annular side wall 12, and the bottom end of the side wall 12 is integrally formed with the bottom wall 11; the cover plate
  • the assembly 20 includes a top cover 21 with a through hole in the middle area, and a conductive member 22 covered with a through hole.
  • the conductive member 22 is connected to the top cover 21 in an insulating manner; the outer edge of the top cover 21 is welded to the top of the side wall 12 to form an accommodating electrode
  • the shape of the cross section of the housing 10 may be any shape such as a circle, an ellipse, a polygon, etc., which is not limited in the present invention.
  • the top cover 21 is provided with a through hole, so that the top cover 21 forms an annular structure.
  • the shape of the through hole may be circular, oval or multi-deformed, etc., which is not specifically set here.
  • the electrode assembly 30 is located in the accommodating cavity 101 .
  • the electrode assembly 30 includes a positive electrode sheet, a negative electrode sheet, and a separator separating the positive electrode sheet and the negative electrode sheet; the positive electrode sheet is provided with a first tab 31, and the first tab 31 can be disposed on the positive electrode sheet by welding, and the negative electrode sheet is provided with a A second pole lug 32 is provided, and the second pole lug 32 can be disposed on the negative electrode sheet by welding; during the winding process, the positive electrode sheet, the negative electrode sheet and the separator are wound layer by layer from the winding head in the same direction and finally formed. Electrode assembly 30 .
  • the first tab 31 and the housing 10 are electrically connected by means of welding or the like, and the second tab 32 and the conductive member 22 are also electrically connected by means of welding or bonding.
  • the casing 10 and the conductive member 22 are respectively electrically connected to the positive and negative electrodes on the electronic device, so that the electrode assembly 30 provides electrical energy to the electronic device through the casing 10 and the conductive member 22 .
  • the casing 10 and the conductive member 22 can be made of stainless steel, copper, iron, aluminum and other metal materials.
  • the conductive member 22 is disposed on the side of the top cover 21 facing the accommodating cavity 101 , the conductive member 22 abuts on the abutting surface of the top cover 21 , the conductive member 22 covers the through hole, and the conductive member 22 and the top cover 21 Insulated and sealed connection between.
  • the insulating and sealing connection between the conductive member 22 and the top cover 21 may be bonded by an insulating sealing ring, or may be connected by other insulating and sealing methods, which are not specifically set here.
  • the conductive member 22 is also provided with a liquid injection port 221 for injecting electrolyte into the accommodating cavity 101 , and the liquid injection port 221 may be any shape such as a circle, a quadrangle, and a polygon.
  • the liquid injection port 221 is disposed concentrically with the conductive member 22
  • the conductive member 22 is disposed concentrically with the accommodating cavity 101 for accommodating the electrode assembly 30 .
  • the conductive member 22 in order to improve the sealing performance of the connection between the conductive member 22 and the top cover 21, the conductive member 22 can be adhered to the inner wall of the top cover 21 through the sealing rubber ring 40 by heating and pressing.
  • the bonding reliability of the sealing rubber ring 40 is improved, thereby improving the sealing performance of the connection between the conductive member 22 and the top cover 21 .
  • the button battery provided by the present invention is disposed on the side of the top cover 21 facing the accommodating cavity 101 through the conductive member 22, and the pressing force of the conductive member 22 on the top cover 21 is greater than that in the prior art when the top cover is disposed away from the accommodating cavity.
  • the adhesive force between the conductive member on the one side and the top cover increases the bearing capacity of the conductive member 22 to the pressure in the button battery, thereby reducing the destructive force caused by the explosion of the battery, thereby improving the conductivity The safety and reliability of the button battery.
  • the cover plate assembly 20 further includes a sealing member 23 for covering the liquid injection port 221 , the sealing member 23 is located on the side of the conductive member 22 away from the accommodating cavity 101 , and the abutting surface of the conductive member 22 and the inner wall of the top cover 21 is level.
  • the contact surface of the conductive member 22 with the inner wall of the top cover 21 is a horizontal plane, the structure of the conductive member 22 is simple, thereby reducing the processing cost of the button battery.
  • the top cover 21 is disc-shaped, the through hole is a circular hole, the conductive member 22 is disc-shaped, and the diameter of the through hole is smaller than the diameter of the conductive member 22 . Therefore, the conductive member At least a part of the edge of the 22 and the edge of the through hole are stacked in a radial direction, which not only increases the bearing capacity of the conductive member 22 to the pressure in the button battery, but also adopts the sealing rubber ring 40 between the through hole and the conductive member 22.
  • the method of heating and pressing makes it tightly bonded, and also improves the sealing performance of the button battery.
  • the conductive member 22 Since the larger the size of the edge of the conductive member 22 and the edge of the through hole stacked in the radial direction, the better the conductive member 22 can withstand the pressure in the button battery. Therefore, in one embodiment, the conductive member 22 The unilateral stacked part with the through hole in the radial direction is greater than or equal to 1 mm, and the diameter of the conductive member 22 is less than or equal to 0.05 mm than that of the top cover 21, thus increasing the contact area between the conductive member 22 and the through hole, thereby increasing the The resistance of the conductive member 22 to the pressure in the button battery is improved.
  • FIG. 3 is a schematic diagram of the second structure of the button-type battery provided by the present invention
  • FIG. 4 is a schematic diagram of the structure of the conductive member in the button-type battery provided in FIG. 3 .
  • the conductive member 22 is provided with a boss 223 pierced through the through hole.
  • the side of 22 facing the accommodating cavity is a plane, the liquid injection port 221 penetrates through the boss 223 , and the center of the boss 223 coincides with the center of the liquid injection port 221 .
  • the boss 223 and the hole wall of the through hole are sealed and connected by the sealing rubber ring 40, which further increases the contact area between the conductive member 22 and the through hole, not only improves the sealing between the conductive member 22 and the through hole, but also improves the sealing performance between the conductive member 22 and the through hole.
  • the ability of the conductive member 22 to withstand the pressure within the coin cell is also improved.
  • the end face of the boss 223 away from the accommodating cavity 101 is flush with the end face of the housing 10 away from the accommodating cavity 101 , or the end face of the boss 223 away from the accommodating cavity 101 is at the end face of the casing 10 away from the accommodating cavity 101 and
  • the casing 10 is close to the end faces of the accommodating cavity 101 , so that the overall structure of the button battery is more compact, and the overall aesthetics of the button battery is improved.
  • the center of the boss 223 and the center of the liquid injection port 221 may not overlap, and no specific setting is made here.
  • FIG. 5 is a schematic diagram of a third structure of the button-type battery provided by the present invention
  • FIG. 6 is a schematic diagram of the structure of the conductive member in the button-type battery provided in FIG. 5 .
  • one end of the boss 223 away from the accommodating cavity 101 is provided with a counterbore 222 , the counterbore 222 communicates with the liquid injection port 221 , and the center of the counterbore 222 is connected to the liquid injection port 221 .
  • the centers of the 23 are coincident, and the sealing member 23 is arranged in the countersunk hole.
  • the shape of the counterbore 222 is the same as the shape of the liquid injection port 221 , that is, when the shape of the liquid injection port 221 is circular, the shape of the counterbore 222 is also circular.
  • the thickness of the contact portion between the conductive member 22 and the top cover 21 is between 0.05mm and 0.2mm
  • the thickness of the boss 223 is between 0.1mm and 0.5mm
  • the counterbore 222 The depth can be between 0.05mm and 0.45mm.
  • Fig. 7 is the first structural schematic diagram of the sealing member provided by the utility model
  • Fig. 8 is the sectional structure schematic diagram of the sealing member in Fig. 7
  • Fig. 9 is the second structural schematic diagram of the sealing member provided by the utility model
  • Fig. 9 is a schematic cross-sectional structure diagram of the sealing member
  • Fig. 11 is a third structural schematic diagram of the sealing member provided by the utility model
  • Fig. 12 is a cross-sectional structure schematic diagram of the sealing member in Fig. 11
  • Figure 14 is a schematic cross-sectional structure diagram of the sealing member in Figure 13.
  • the closure member 23 is provided with a thinned area 231 .
  • the sealing member 23 is provided with a thinned area 231. Since the pressure-bearing capacity of the thinned area 231 is smaller than that of the area without the thinned area 231, when the pressure in the button battery increases When the pressure reaches the maximum critical value of the pressure that the thinning region 231 can withstand, at this time, the thinning region 231 will crack or rupture directly under the drive of the pressure, and the pressure in the coin cell can increase from the crack in the thinning region 231.
  • exhaust decompression is performed at the rupture, and the pressure in the battery has not yet reached the maximum critical value of the pressure that the un-thinned area 231 can withstand. Therefore, if the battery explodes, its destructive force will be greatly reduced. Improve the safety and reliability of the button battery.
  • the pressure that the thinned area 231 can bear is smaller than the pressure bearing capacity of the area without thinning.
  • the pressure in the button battery increases to a pressure that the thinning area 231 cannot withstand, the thinning area 231 will crack or even rupture, so that the pressure in the button battery will be vented and depressurized from the thinning area 231.
  • the pressure in the battery can be discharged in advance, thereby reducing the destructive force caused by the battery explosion, and avoiding the technical problem that the pressure in the battery is too large and cannot be discharged in advance, resulting in a large destructive force after the explosion.
  • the thinning area 231 is located on the side of the sealing member 23 that faces away from the accommodating cavity 101 .
  • the sealing member 23 faces the accommodating cavity 101 .
  • One side of the battery is a flat plane. In this way, while improving the safety and reliability of the battery, it can prevent the electrolyte in the accommodating cavity 101 from corroding the connection between the thinned area 231 and the area without thinning, thereby reducing the number of batteries. lifespan.
  • a groove is provided on a side of the sealing member 23 away from the accommodating cavity 101 , and the groove forms a thinning area 231 .
  • the thinning area 231 may be at least one of a cross-shaped groove, an annular groove or a circular groove.
  • the thinned area 231 is a cross-shaped groove; as shown in FIGS. 7 and 8 , the thinned area 231 is an annular groove; as shown in FIGS. 11 and 12 , the thinned area
  • the area 231 is a combination of a circular groove and a cross-shaped groove; as shown in FIG. 13 and FIG. 14 , the thinning area 231 is a circular groove; wherein, the thinning area 231 can also be an oval groove, a rectangular groove
  • a groove of any regular shape such as a groove or a combination of at least two shapes may also be a groove of any irregular shape, or may be a regular shape or a combination of irregular shapes, which is not specifically limited here.
  • the center of the thinned area 231 coincides with the center of the liquid injection port 221, so that when processing the thinned area 231, it is convenient to find the center of the thinned area 231 during processing. just.
  • the depth of the groove of the groove is 0.01mm ⁇ 0.1mm. In this way, while satisfying the strength requirement of the sealing member 23 during normal operation, the coin-type battery can be under internal pressure. When it is too large, exhaust and pressure relief can be carried out in advance to reduce the damage caused by the explosion of the button battery, thereby improving the safety and reliability of the button battery.
  • the thinned area 231 and the sealing member 23 can be integrally formed, thus reducing the processing steps for forming the sealing member 23 and the thinning area 231, thereby reducing the processing cost.
  • the sealing member 23 may be a sheet-like structure, that is, the sealing member 23 is a sealing sheet, so that the surface of the sealing member 23 facing the side of the accommodating cavity 101 is a flat plane, so that the strength of the sealing member 23 can be improved, Thus, the use reliability of the sealing member 23 is improved.
  • the sealing member 23 is set as a sealing sheet, that is, the thickness of the sealing member 23 is relatively thin.
  • the thickness of the sealing member 23 is relatively thin, the pressure it can bear is smaller. Therefore, when the pressure in the battery exceeds the sealing member 23 In this way, when the battery explodes, the destructive force caused by the battery explosion can be reduced.
  • the utility model also provides an electronic device, comprising: an electronic device body and a button-type battery, and the button-type battery provides electrical energy for the electronic device body.
  • the structure of the button battery in the electronic device provided by the present invention is the same as the structure of the button battery described above, and can bring the same or similar technical effects, which will not be repeated here.

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  • Engineering & Computer Science (AREA)
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  • Sealing Battery Cases Or Jackets (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
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Abstract

一种扣式电池及电子设备，涉及电池技术领域。扣式电池包括：壳体（10）和盖板组件（20）；壳体（10）包括底壁（11）和环形的侧壁（12）；盖板组件（20）包括中部区域具有通孔的顶盖（21），以及盖设通孔的导电件（22）；顶盖（21）的外边缘与侧壁（12）的顶端焊接，形成容纳电极组件（30）和电解液的容置腔（101）；导电件（22）设置在顶盖（21）朝向容置腔（101）的一面；电子设备本体包括扣式电池。通过导电件（22）设置在顶盖（21）朝向容置腔（101）的一面，导电件（22）对顶盖（21）的挤压力大于现有技术中设置在顶盖（21）远离容置腔（101）的一面的导电件（22）与顶盖（21）之间的粘接力，这样，增大了导电件（22）对扣式电池内的压力的承受力，从而降低了电池爆炸时所造成的破坏力，进而提高了扣式电池的安全可靠性。

Description

扣式电池及电子设备
本申请要求于2020年12月04日提交中国专利局、申请号202022901163.0、申请名称为“扣式电池及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本实用新型涉及电池技术领域，尤其涉及一种扣式电池及电子设备。
背景技术
扣式电池，指外形尺寸像一颗纽扣的电池，一般来说直径较大，厚度较薄。扣式电池因其体积小，故在各种微型电子设备中得到了广泛的应用，例如：穿戴电子设备领域、以及医疗产品领域等。
现有技术中，扣式电池包括壳体、导电件和封口件。壳体上设置有与容纳电解液的腔体连通的通孔，导电件盖设在通孔上并设置在扣式电池的外侧，且导电件与壳体之间通过密封胶圈粘贴在壳体上；封口件盖设在导电件的注液口上。
然而，由于扣式电池的内部属于密闭空间，现有的导扣式电池存在安全可靠性低的问题。
实用新型内容
本实用新型提供一种扣式电池及电子设备，以解决现有的导扣式电池存在安全可靠性低的问题。
一方面，本实用新型提供一种扣式电池，包括：壳体和盖板组件；
所述壳体包括底壁和环形的侧壁，所述侧壁的底端与所述底壁一体成型；
所述盖板组件包括中部区域具有通孔的顶盖，以及盖设所述通孔的导电件，所述导电件与所述顶盖绝缘连接；
所述顶盖的外边缘与所述侧壁的顶端焊接，形成容纳电极组件和电解液的容置腔，所述顶盖外边缘的外表面具有焊印，焊接熔深从所述顶盖向所述 侧壁的方向延伸；
所述导电件设置在所述顶盖朝向所述容置腔的一面。
在一个可选地实施方式中，所述导电件上设有向所述容置腔内注入电解液的注液口；
所述盖板组件还包括封盖所述注液口的封口件，所述封口件位于所述导电件背离所述容置腔的一面。
在一个可选地实施方式中，所述导电件上设置有穿设在所述通孔中的凸台，所述凸台设置在所述导电件与所述顶盖相抵接的面上；所述导电件朝向所述容置腔的一面为平面。
在一个可选地实施方式中，所述注液口贯穿所述凸台，且所述凸台的中心与所述注液口的中心重合。
通过凸台与通孔的孔壁之间通过密封胶圈密封连接，进一步增大了导电件与通孔之间的接触面积，不仅提高了导电件与通孔之间的密封性，还提高了导电件对扣式电池内的压力的承受力。
在一个可选地实施方式中，所述凸台远离所述容置腔的端面与所述壳体远离所述容置腔的端面平齐；或，所述凸台远离所述容置腔的端面在所述壳体远离所述容置腔的端面和所述壳体靠近所述容置腔的端面之间。
在一个可选地实施方式中，所述凸台远离所述容置腔的一端设置有沉孔，所述沉孔与所述注液口连通，且所述沉孔的中心与所述注液口的中心重合。
当通过注液口向容置腔内注入电解液之后，在壳体外侧将封口件与沉孔之间的接合处进行焊接，从而提高了封口件与注液口之间的密封性。
在一个可选地实施方式中，所述凸台远离所述容置腔的端面与所述凸台靠近所述容置腔的端面之间的距离为0.1mm～0.5mm。
在一个可选地实施方式中，所述导电件与所述顶盖之间设置有密封胶圈。
在一个可选地实施方式中，所述封口件背离所述容置腔的一侧上设有凹槽，所述凹槽形成减薄区，所述减薄区的中心与所述注液口的中心重合。
通过封口件设置减薄区，使得扣式电池内的压力会从减薄区进行排气泄压，实现扣式电池内的压力可以提前排泄的目的，从而降低电池爆炸时所造成的破坏力。
另一方面，本实用新型还提供一种电子设备，包括：电子设备本体和上述任一项所述的扣式电池，所述扣式电池为所述电子设备本体提供电能。
本实用新型提供一种扣式电池及电子设备，包括：壳体和盖板组件；壳体包括底壁和环形的侧壁，侧壁的底端与底壁一体成型；盖板组件包括中部区域具有通孔的顶盖，以及盖设通孔的导电件，导电件与顶盖绝缘连接；顶盖的外边缘与侧壁的顶端焊接，形成容纳电极组件和电解液的容置腔，顶盖外边缘的外表面具有焊印，焊接熔深从顶盖向侧壁的方向延伸；导电件设置在顶盖朝向容置腔的一面。通过导电件设置在顶盖朝向容置腔的一面，导电件对顶盖的挤压力大于现有技术中设置在顶盖远离容置腔的一面的导电件与顶盖之间的粘接力，这样，增大了导电件对扣式电池内的压力的承受力，从而降低了电池爆炸时所造成的破坏力，进而提高了导扣式电池的安全可靠性。
附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本实用新型提供的扣式电池的第一种结构示意图；
图2为图1提供的扣式电池中的导电件的结构示意图；
图3为本实用新型提供的扣式电池的第二种结构示意图；
图4为图3提供的扣式电池中的导电件的结构示意图；
图5为本实用新型提供的扣式电池的第三种结构示意图；
图6为图5提供的扣式电池中的导电件的结构示意图；
图7为本实用新型提供的封口件的第一种结构示意图；
图8为图7中封口件的剖面结构示意图；
图9为本实用新型提供的封口件的第二种结构示意图；
图10为图9中封口件的剖面结构示意图；
图11为本实用新型提供的封口件的第三种结构示意图；
图12为图11中封口件的剖面结构示意图；
图13为本实用新型提供的封口件的第三种结构示意图；
图14为图13中封口件的剖面结构示意图。
附图标记说明：
10-壳体；101-容置腔；
11-底壁；12-侧壁；
20-盖板组件；21-顶盖；
22-导电件；221-注液口；
222-沉孔；223-凸台；
23-封口件；231-减薄区；
30-电极组件；31-第一极耳；
32-第二极耳；40-密封胶圈。
具体实施方式
在本说明书的描述中，参考术“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合实施方式或示例描述的具体特征、结构、材料或者特点包含于本实用新型的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
需要说明的是，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。在本实用新型的描述中，“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。
在本实用新型中，除非另有明确的规定和限定，术语“安装”、“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实用新型中的具体含义。
在本实用新型中，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。
在以上描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述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实用新型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。
扣式电池，指外形尺寸像一颗纽扣的电池，一般来说直径较大，厚度较薄。扣式电池因其体积小，故在各种微型电子设备中得到了广泛的应用，例如：穿戴电子设备领域、以及医疗产品领域等。现有技术中，扣式电池包括壳体、导电件和封口件。壳体上设置有与容纳电解液的腔体连通的通孔，导电件盖设在通孔上并设置在扣式电池的外侧，且导电件与壳体之间通过密封胶圈粘贴在壳体上；封口件盖设在导电件的注液口上。然而，由于扣式电池的内部属于密闭空间，现有的导扣式电池存在安全可靠性低的问题。
为了解决上述问题，本实用新型提供一种扣式电池及电子设备，通过导电件设置在顶盖朝向容置腔的一面，导电件对顶盖的挤压力大于现有技术中设置在顶盖远离容置腔的一面的导电件与顶盖之间的粘接力，这样，增大了导电件对扣式电池内的压力的承受力，从而降低了电池爆炸时所造成的破坏力，进而提高了导扣式电池的安全可靠性。
下面结合具体实施例对本实用新型提供的扣式电池及电子设备进行详细说明。
图1为本实用新型提供的扣式电池的第一种结构示意图；图2为图1提供的扣式电池中的导电件的结构示意图。
本实用新型提供一种扣式电池，包括：壳体10和盖板组件20；壳体10包括底壁11和环形的侧壁12，侧壁12的底端与底壁11一体成型；盖板组件20包括中部区域具有通孔的顶盖21，以及盖设通孔的导电件22，导电件22与顶盖21绝缘连接；顶盖21的外边缘与侧壁12的顶端焊接，形成容纳电极 组件30和电解液的容置腔101，顶盖21外边缘的外表面具有焊印，焊接熔深从顶盖21向侧壁12的方向延伸；导电件22设置在顶盖21朝向容置腔101的一面。
其中，壳体10的横截面的形状可以是圆形，椭圆形、多边形等任意形状，在此，本实用新型不做限制。
顶盖21上设有通孔，以使顶盖21形成环状结构。其中，通孔的形状可以是圆形、椭圆形或多变形等，在此不做具体设置。
电极组件30位于容置腔101内。电极组件30包括正极片、负极片以及将正极片和负极片隔开的隔膜；正极片上设置有第一极耳31，第一极耳31可以通过焊接的方式设置在正极片上，负极片上设置有设置有第二极耳32，第二极耳32可以通过焊接的方式设置在负极片上；卷绕过程中正极片、负极片以及隔膜从卷绕首端开始朝同一方向逐层卷绕并最终形成电极组件30。
第一极耳31与壳体10通过焊接等方式进行电连接，第二极耳32与导电件22也通过焊接、粘接的方式电连接。壳体10和导电件22分别与电子设备上的正负极电连接，以使电极组件30通过壳体10与导电件22向电子设备提供电能。
由于电极组件30要通过壳体10和导电件22为电子设备提供电能，因此，壳体10和导电件22可以选用不锈钢、铜、铁、铝等金属材质制成。
导电件22设置在顶盖21朝向容置腔101的一面，导电件22抵接在顶盖21的抵接面上，导电件22并封盖在通孔上，且导电件22与顶盖21之间绝缘且密封连接。其中，导电件22与顶盖21之间绝缘且密封连接可以通过绝缘密封圈粘接，也可以通过其它的绝缘且密封的方式连接，在此不做具体设置。
导电件22上还设有向容置腔101内注入电解液的注液口221，注液口221可以是圆形、四边形、多边形等任意形状。在一个实施例中，注液口221与导电件22同心设置，导电件22与用于盛放电极组件30的容置腔101同心设置。
需要说明的是，为了提高导电件22与顶盖21之间的连接密封性，可通过加热加压的方式将导电件22通过密封胶圈40粘接在顶盖21的内壁上，这样，可以提高密封胶圈40的粘接可靠性，从而提高导电件22与顶盖21之间的连接密封性。
本实用新型提供的扣式电池，通过导电件22设置在顶盖21朝向容置腔 101的一面，导电件22对顶盖21的挤压力大于现有技术中设置在顶盖远离容置腔的一面的导电件与顶盖之间的粘接力，这样，增大了导电件22对扣式电池内的压力的承受力，从而降低了电池爆炸时所造成的破坏力，进而提高了导扣式电池的安全可靠性。
可选地，盖板组件20还包括封盖注液口221的封口件23，封口件23位于导电件22背离容置腔101的一面，导电件22与顶盖21的内壁的抵接面为水平面。通过将导电件22与顶盖21的内壁的抵接面设置成水平面，使得导电件22的结构简单，从而降低了扣式电池的加工成本。
示例性地，如图1和图2所示，顶盖21为圆盘状，通孔为圆孔，导电件22为圆盘状，通孔的直径小于导电件22的直径，因此，导电件22的边缘与通孔边缘处沿径向至少有一部分层叠设置，不仅增大了导电件22对扣式电池内的压力的承受力，而且通孔和导电件22之间通过密封胶圈40采用加热加压的方式使其紧密粘接，还提高了扣式电池的密封性。
由于导电件22的边缘与通孔的边缘沿径向单边层叠的尺寸越大，则导电件22对扣式电池内的压力的承受力越好，因此，在一个实施例中，导电件22与通孔沿径向的单边层叠部分大于等于1mm，且导电件22比顶盖21的直径小于或等于0.05mm，这样，增大了导电件22与通孔之间的接触面积，从而提高了导电件22对扣式电池内的压力的承受力。
图3为本实用新型提供的扣式电池的第二种结构示意图；图4为图3提供的扣式电池中的导电件的结构示意图。
可选地，如图3和图4所示，导电件22上设置有穿设在通孔中的凸台223，凸台223设置在导电件22与顶盖21相抵接的面上，导电件22朝向容置腔的一面为平面，注液口221贯穿凸台223，且凸台223的中心与注液口221的中心重合。
凸台223与通孔的孔壁之间通过密封胶圈40密封连接，进一步增大了导电件22与通孔之间的接触面积，不仅提高了导电件22与通孔之间的密封性，还提高了导电件22对扣式电池内的压力的承受力。
进一步地，凸台223远离容置腔101的端面与壳体10远离容置腔101的端面平齐，或凸台223远离容置腔101的端面在壳体10远离容置腔101的端面和壳体10靠近容置腔101的端面之间，这样，扣式电池的整体结构更加紧凑，提高了扣式电池的整体美观性。
需要说明的是，根据实际需要，凸台223的中心与注液口221的中心也可以不重合，在此不做具体设定。
图5为本实用新型提供的扣式电池的第三种结构示意图；图6为图5提供的扣式电池中的导电件的结构示意图。
可选地，如图5和图6所示，凸台223远离容置腔101的一端设置有沉孔222，沉孔222与注液口221连通，且沉孔222的中心与注液口221的中心重合，封口件23设置在沉孔中。当通过注液口221向容置腔101内注入电解液之后，在顶盖21外侧将封口件23与沉孔222之间的接合处进行焊接，从而提高了封口件23与注液口221之间的密封性。
其中，沉孔222的形状与注液口221的形状相同，即注液口221的形状为圆形时，则沉孔222的形状也为圆形。
示例性的，在注液口221的延伸方向上，导电件22与顶盖21抵接部分的厚度在0.05mm～0.2mm之间，凸台223的厚度为0.1mm～0.5mm，沉孔222的深度可以为0.05mm～0.45mm之间。
图7为本实用新型提供的封口件的第一种结构示意图；图8为图7中封口件的剖面结构示意图；图9为本实用新型提供的封口件的第二种结构示意图；图10为图9中封口件的剖面结构示意图；图11为本实用新型提供的封口件的第三种结构示意图；图12为图11中封口件的剖面结构示意图；图13为本实用新型提供的封口件的第三种结构示意图；图14为图13中封口件的剖面结构示意图。
可选地，封口件23设置有减薄区231。
由于扣式电池为密闭的空间，因此，容置腔101内的压力比较大，当压力过大时，如果发生爆炸等情况发现，则造成的破坏程度较大，为了提高扣式电池的安全可靠性，在本实用新型中，封口件23上设有减薄区231，由于减薄区231的承压能力小于没有减薄区231域的承压能力，因此，当扣式电池内的压力增大到减薄区231所能承受的压力的最大临界值时，此时，减薄区231会在压力的驱动下发生裂纹或者直接破裂，扣式电池内的压力可从减薄区231的裂纹或者破裂处进行排气减压，而此时电池内的压力还没有达到未减薄区231所能承受压力的最大临界值，因此，电池如果发生爆炸，其破坏力也会大大的减小，从而提高扣式电池的安全可靠性。
本实用新型实施例提供的扣式电池，通过在封口件23上设置减薄区231， 由于减薄区231所能承受的压力相对于没有减薄的区域的承压能力较小，这样，当扣式电池内的压力增大到减薄区231所不能承受的压力时，减薄区231会产生裂纹甚至破裂，这样，扣式电池内的压力会从减薄区231进行排气泄压，实现电池内的压力可以提前排泄的目的，从而降低电池爆炸时所造成的破坏力，避免电池内的压力过大且无法提前排泄而造成爆炸后破坏力较大的技术问题。
可选地，减薄区231位于封口件23背离容置腔101的一侧，通过将减薄区231设置在封口件23背离容置腔101的一侧，即封口件23朝向容置腔101的一侧为平整的平面，这样，在提高电池安全可靠性的同时，可以避免容置腔101内的电解液对减薄区231与没有减薄的区域之间的连接处进行腐蚀而减少电池的寿命。
在一种可选的实施方式中，封口件23背离容置腔101的一侧上设有凹槽，凹槽形成减薄区231。通过在封口件23背离容置腔101的一侧上设置凹槽，以使凹槽形成减薄区231，结构简单，加工成本低。
可选地，减薄区231可以为十字型凹槽、环形凹槽或者圆形凹槽中的至少一种。
例如，如图9和图10所示，减薄区231为十字型凹槽；如图7和图8所示，减薄区231为圆环形凹槽；如图11和图12，减薄区231为圆形凹槽和十字型凹槽的组合；如图13和图14所示，减薄区231为圆形凹槽；其中，减薄区231还可以是椭圆形凹槽、矩形凹槽等其它任意规则形状的凹槽或者至少两个形状的组合，也可以是任意不规则形状的凹槽，或者可以是规则形状或者不规则形状的组合，在此不做具体限制。
可选地，为了便于减薄区231的加工，减薄区231的中心与注液口221的中心重合，这样，当在加工减薄区231时，便于减薄区231在加工时的中心找正。
在一种可选的实施方式中，凹槽的槽的深度为0.01mm～0.1mm，这样，在满足封口件23在正常工作时的满足强度的需求的同时，以使扣式电池在内部压力过大时，可以提前进行排气和泄压，减小扣式电池发生爆炸时造成的损伤，从而提高扣式电池的安全可靠性。
进一步的，减薄区231与封口件23可以一体成型，这样，减少封口件23和减薄区231形成的加工工序，从而降低了加工成本。
可选地，封口件23可以为片状结构，即封口件23为封口片，这样，封口件23朝向容置腔101一侧的面为平整的平面，这样，可以提高封口件23的强度，从而提高封口件23的使用可靠性。
另外，将封口件23设置为封口片，即封口件23的厚度较薄，当封口件23的厚度较薄时，所能承受的压力则较小，因此，当电池内的压力超过封口件23所能承受的压力时，这样，当电池在爆炸时，可以降低电池爆炸时所造成的破坏力。
本实用新型还提供一种电子设备，包括：电子设备本体和扣式电池，扣式电池为电子设备本体提供电能。
其中，本实用新型提供的电子设备中的扣式电池的结构与以上所述的扣式电池的结构相同，并能带来相同或者类似的技术效果，在此不再一一赘述。
最后应说明的是：以上各实施例仅用以说明本实用新型的技术方案，而非对其限制；尽管参照前述各实施例对本实用新型进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本实用新型各实施例技术方案的范围。

Claims (10)

  1. 一种扣式电池，其特征在于，包括：壳体和盖板组件；
    所述壳体包括底壁和环形的侧壁，所述侧壁的底端与所述底壁一体成型；
    所述盖板组件包括中部区域具有通孔的顶盖，以及盖设所述通孔的导电件，所述导电件与所述顶盖绝缘连接；
    所述顶盖的外边缘与所述侧壁的顶端焊接，形成容纳电极组件和电解液的容置腔，所述顶盖外边缘的外表面具有焊印，焊接熔深从所述顶盖向所述侧壁的方向延伸；
    所述导电件设置在所述顶盖朝向所述容置腔的一面。
  2. 根据权利要求1所述的扣式电池，其特征在于，所述导电件上设有向所述容置腔内注入电解液的注液口；
    所述盖板组件还包括封盖所述注液口的封口件，所述封口件位于所述导电件背离所述容置腔的一面。
  3. 根据权利要求2所述的扣式电池，其特征在于，所述导电件上设置有穿设在所述通孔中的凸台，所述凸台设置在所述导电件与所述顶盖相抵接的面上；所述导电件朝向所述容置腔的一面为平面。
  4. 根据权利要求3所述的扣式电池，其特征在于，所述注液口贯穿所述凸台，且所述凸台的中心与所述注液口的中心重合。
  5. 根据权利要求4所述的扣式电池，其特征在于，所述凸台远离所述容置腔的端面与所述壳体远离所述容置腔的端面平齐；或，所述凸台远离所述容置腔的端面在所述壳体远离所述容置腔的端面和所述壳体靠近所述容置腔的端面之间。
  6. 根据权利要求5所述的扣式电池，其特征在于，所述凸台远离所述容置腔的一端设置有沉孔，所述沉孔与所述注液口连通，且所述沉孔的中心与所述注液口的中心重合。
  7. 根据权利要求6所述的扣式电池，其特征在于，所述凸台远离所述容置腔的端面与所述凸台靠近所述容置腔的端面之间的距离为0.1mm～0.5mm。
  8. 根据权利要求1至7中任一项所述的扣式电池，其特征在于，所述导电件与所述顶盖之间设置有密封胶圈。
  9. 根据权利要求2至7中任一项所述的扣式电池，其特征在于，所述封口件背离所述容置腔的一侧上设有凹槽，所述凹槽形成减薄区，所述减薄区 的中心与所述注液口的中心重合。
  10. 一种电子设备，其特征在于，包括：电子设备本体和权利要求1至9中任一项所述的扣式电池，所述扣式电池为所述电子设备本体提供电能。
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