WO2022117098A1 - 扣式电池及电子设备 - Google Patents
扣式电池及电子设备 Download PDFInfo
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 76
- 238000002347 injection Methods 0.000 claims description 34
- 239000007924 injection Substances 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 34
- 239000003792 electrolyte Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 12
- 230000035515 penetration Effects 0.000 claims description 4
- 238000004880 explosion Methods 0.000 abstract description 10
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000008151 electrolyte solution Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 27
- 230000001066 destructive effect Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 229940127554 medical product Drugs 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
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
- H01M50/60—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.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Filling, Topping-Up Batteries (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (10)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022580363A JP2023531752A (ja) | 2020-12-04 | 2021-12-03 | ボタン電池及び電子機器 |
EP21900120.3A EP4156386A4 (en) | 2020-12-04 | 2021-12-03 | BUTTON BATTERY AND ELECTRONIC DEVICE |
KR1020227043973A KR20230011378A (ko) | 2020-12-04 | 2021-12-03 | 버튼 타입 배터리 및 전자기기 |
US18/069,633 US20230120563A1 (en) | 2020-12-04 | 2022-12-21 | Button cell and electronic device |
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CN202022901163.0 | 2020-12-04 | ||
CN202022901163.0U CN213520130U (zh) | 2020-12-04 | 2020-12-04 | 扣式电池及电子设备 |
Related Child Applications (1)
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US18/069,633 Continuation US20230120563A1 (en) | 2020-12-04 | 2022-12-21 | Button cell and electronic device |
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WO2022117098A1 true WO2022117098A1 (zh) | 2022-06-09 |
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PCT/CN2021/135533 WO2022117098A1 (zh) | 2020-12-04 | 2021-12-03 | 扣式电池及电子设备 |
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US (1) | US20230120563A1 (zh) |
EP (1) | EP4156386A4 (zh) |
JP (1) | JP2023531752A (zh) |
KR (1) | KR20230011378A (zh) |
CN (1) | CN213520130U (zh) |
WO (1) | WO2022117098A1 (zh) |
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CN213520130U (zh) * | 2020-12-04 | 2021-06-22 | 珠海冠宇电池股份有限公司 | 扣式电池及电子设备 |
WO2023030547A1 (zh) * | 2021-07-12 | 2023-03-09 | 深圳市格瑞普电池有限公司 | 扣式锂离子电池及电子产品 |
CN113675508A (zh) * | 2021-09-18 | 2021-11-19 | 珠海冠宇电池股份有限公司 | 电池及电子设备 |
CN113675512A (zh) * | 2021-09-18 | 2021-11-19 | 珠海冠宇电池股份有限公司 | 电池及电子设备 |
CN113764790A (zh) * | 2021-10-08 | 2021-12-07 | 深圳市聚和源科技有限公司 | 盖合组件及电池 |
CN114649651A (zh) * | 2022-03-04 | 2022-06-21 | 广东维都利新能源有限公司 | 一种无极耳焊接的电池及制备方法 |
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CN107946496A (zh) * | 2017-12-14 | 2018-04-20 | 力神电池(苏州)有限公司 | 一种新型锂离子电池盖 |
CN207587784U (zh) * | 2017-12-27 | 2018-07-06 | 桑德集团有限公司 | 一种用于电池金属外壳的盖板和电池外壳 |
CN109192889A (zh) * | 2018-08-22 | 2019-01-11 | 珠海微矩实业有限公司 | 一种微型电池 |
CN111613739A (zh) * | 2020-06-03 | 2020-09-01 | 珠海冠宇电池股份有限公司 | 扣式电池及其制造方法、电子设备 |
CN111989800A (zh) * | 2020-07-14 | 2020-11-24 | 宁德新能源科技有限公司 | 电池和具有所述电池的用电装置 |
CN213520130U (zh) * | 2020-12-04 | 2021-06-22 | 珠海冠宇电池股份有限公司 | 扣式电池及电子设备 |
Family Cites Families (3)
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---|---|---|---|---|
WO2020037535A1 (zh) * | 2018-08-22 | 2020-02-27 | 珠海微矩实业有限公司 | 一种微型电池 |
KR102490178B1 (ko) * | 2020-02-07 | 2023-01-18 | 닝더 엠프렉스 테크놀로지 리미티드 | 배터리 및 상기 배터리를 구비하는 전기 장치 |
KR20210156607A (ko) * | 2020-06-18 | 2021-12-27 | 삼성에스디아이 주식회사 | 이차 전지 |
-
2020
- 2020-12-04 CN CN202022901163.0U patent/CN213520130U/zh active Active
-
2021
- 2021-12-03 EP EP21900120.3A patent/EP4156386A4/en active Pending
- 2021-12-03 WO PCT/CN2021/135533 patent/WO2022117098A1/zh unknown
- 2021-12-03 JP JP2022580363A patent/JP2023531752A/ja active Pending
- 2021-12-03 KR KR1020227043973A patent/KR20230011378A/ko unknown
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CN107946496A (zh) * | 2017-12-14 | 2018-04-20 | 力神电池(苏州)有限公司 | 一种新型锂离子电池盖 |
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Also Published As
Publication number | Publication date |
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KR20230011378A (ko) | 2023-01-20 |
EP4156386A4 (en) | 2024-01-24 |
EP4156386A1 (en) | 2023-03-29 |
JP2023531752A (ja) | 2023-07-25 |
US20230120563A1 (en) | 2023-04-20 |
CN213520130U (zh) | 2021-06-22 |
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