CN113078401A - Button soft package lithium battery and assembling method thereof - Google Patents

Button soft package lithium battery and assembling method thereof Download PDF

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Publication number
CN113078401A
CN113078401A CN201911303545.9A CN201911303545A CN113078401A CN 113078401 A CN113078401 A CN 113078401A CN 201911303545 A CN201911303545 A CN 201911303545A CN 113078401 A CN113078401 A CN 113078401A
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CN
China
Prior art keywords
shell
insulating
negative
positive
button
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Pending
Application number
CN201911303545.9A
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Chinese (zh)
Inventor
魏效
苏钟湖
李升高
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Springpower Technology Shenzhen Co Ltd
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Springpower Technology Shenzhen Co Ltd
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Priority to CN201911303545.9A priority Critical patent/CN113078401A/en
Publication of CN113078401A publication Critical patent/CN113078401A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/14—Cells with non-aqueous electrolyte
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

The invention provides a button soft package lithium battery and an assembling method thereof, wherein the button soft package lithium battery comprises a soft package battery cell and a shell, the soft package battery cell comprises a battery cell body, a positive plate and a negative plate, and the positive plate and the negative plate are used for leading current out of the battery cell body; the shell comprises an insulating shell, a positive electrode shell and a negative electrode shell, and both the positive electrode shell and the negative electrode shell have conductivity; the positive electrode shell and the negative electrode shell are respectively arranged at the upper end and the lower end of the insulating shell so as to encapsulate the soft package battery cell in the shell; the positive plate is electrically connected with the positive shell, and the negative plate is electrically connected with the negative shell; firstly, welding the positive plate and the positive shell, welding the negative plate and the negative shell, then moving the positive shell and the negative shell, then assembling the shell, and finally sleeving the insulating sleeve. According to the button soft package lithium battery and the assembling method thereof, the soft package battery core is packaged in the shell, so that the outline size of the shell becomes the outline size of the button soft package lithium battery, the size tolerance of the button soft package lithium battery is reduced, and the button soft package lithium battery is convenient to install and use by a user.

Description

Button soft package lithium battery and assembling method thereof
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a button soft package lithium battery and an assembling method thereof.
Background
The button cell is a cell with the overall dimension like a small button, generally has a larger diameter and a thinner thickness, and is widely applied to products such as computer mainboards, electronic watches, electronic dictionaries, electronic scales, remote controllers, electric toys and the like.
The soft packet of lithium cell of button that appears in the market at present only has soft packet of electricity core, because the structure and the material characteristic of soft packet of electricity core self lead to the soft packet of lithium cell of present button to take place deformation very easily, and overall dimension is hardly unified for the external dimension tolerance of the soft packet of lithium cell of button is great, has brought inconvenience for the user uses the soft packet of lithium cell of button.
Disclosure of Invention
The invention aims to provide a button soft package lithium battery and an assembling method thereof, and aims to solve the technical problem that the external dimensional tolerance between button soft package lithium batteries is large in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the button soft package lithium battery comprises a soft package battery cell and a shell, wherein the soft package battery cell comprises a battery cell body, a positive plate and a negative plate, and the positive plate and the negative plate are used for leading out current from the battery cell body;
the shell comprises an insulating shell, a positive electrode shell and a negative electrode shell, and both the positive electrode shell and the negative electrode shell have conductivity;
the positive electrode shell and the negative electrode shell are respectively arranged at the upper end and the lower end of the insulating shell so as to encapsulate the soft package battery cell in the shell;
the positive plate is electrically connected with the positive shell, and the negative plate is electrically connected with the negative shell.
Furthermore, the insulating shell is provided with a holding tank, the battery cell body is provided with a folded edge, and the folded edge extends into the holding tank.
Further, the receiving groove extends in a circumferential direction of the insulating case.
Furthermore, the insulating device also comprises an insulating sleeve sleeved on the insulating shell.
Further, the orthographic projections of the positive electrode shell and the negative electrode shell along the vertical direction are both positioned in the orthographic projection of the insulating shell along the vertical direction.
Furthermore, the insulating shell comprises an outer shell and inner shells arranged at the upper end and the lower end of the outer shell;
the positive electrode shell and the negative electrode shell are respectively arranged outside the inner shell;
the upper end of the outer wall of the insulating shell is aligned with the lower end of the outer wall of the positive electrode shell, and the lower end of the outer wall of the insulating shell is aligned with the upper end of the outer wall of the negative electrode shell.
Furthermore, a clamping groove or/and a clamping protrusion are/is arranged on the inner shell, a clamping protrusion or/and a clamping groove is/are correspondingly arranged on the positive electrode shell, and a clamping protrusion or/and a clamping groove is/are correspondingly arranged on the negative electrode shell;
the clamping protrusions can extend into the clamping grooves to clamp the positive electrode shell and the negative electrode shell on the insulating shell respectively.
Further, the insulation shell comprises a first arc-shaped shell and a second arc-shaped shell which are spliced along the circumferential direction of the insulation shell;
a first limiting bulge is arranged at the end part of the first arc-shaped shell extending along the circumferential direction of the insulating shell, and a first limiting groove is arranged on the inner side or the outer side of the first limiting bulge; a second limiting protrusion corresponding to the first limiting groove is arranged at the end part of the second arc-shaped shell extending along the circumferential direction of the insulating shell, and a second limiting groove corresponding to the first limiting protrusion is arranged on the inner side or the outer side of the second limiting protrusion;
the first limiting protrusion can extend into the second limiting groove, and the second limiting protrusion can extend into the first limiting groove.
Further, the battery also comprises insulating layers respectively arranged between the battery cell body and the positive electrode shell and between the battery cell body and the negative electrode shell.
The invention also provides an assembly method of the button soft package lithium battery, which comprises the following steps:
welding a positive plate of the soft-packaged cell into a positive shell; welding the negative plate of the soft-package battery cell in a negative shell; respectively fixing insulating layers at the upper end and the lower end of a cell body of the soft-packaged cell;
moving the positive electrode shell from the side of the battery cell body to the upper part of the battery cell body, and moving the negative electrode shell from the side of the battery cell body to the lower part of the battery cell body;
splicing a first arc-shaped shell and a second arc-shaped shell to the outer side of the battery cell body to form an insulating shell;
pushing the positive electrode shell downwards to clamp the positive electrode shell at the upper end of the insulating shell, and pushing the negative electrode shell upwards to clamp the negative electrode shell at the lower end of the insulating shell;
and sleeving the insulating sleeve outside the insulating shell.
The button soft package lithium battery and the assembling method thereof provided by the invention have the beneficial effects that: compared with the prior art, the positive shell and the negative shell of the button soft package lithium battery are respectively arranged at the upper end and the lower end of the insulating shell to form the shell, so that the outline size of the shell is convenient to control, the outline sizes of the shells produced in batch are the same, and the size tolerance between the shells is reduced, therefore, after the soft package battery cell is packaged in the shell, the outline size of the shell is the outline size of the button soft package lithium battery, so that the size tolerance of the button soft package lithium battery is reduced, the button soft package lithium battery is convenient to install and use by a user, and meanwhile, the replacement and maintenance of the user are facilitated; the soft package lithium battery is located in the shell and can be protected by the shell, so that the soft package lithium battery is prevented from being deformed when the button soft package lithium battery is dropped, impacted by external force and the like, the button soft package lithium battery is damaged, and the failure rate of the button soft package lithium battery is reduced; the positive shell and the negative shell are arranged at the upper end and the lower end of the insulating shell, so that the positive shell and the negative shell can be arranged in an insulating way through the insulating shell, and the short circuit of the button soft package lithium battery is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a button soft package lithium battery provided in an embodiment of the present invention;
FIG. 2 is an exploded schematic view of the button soft pack lithium battery of FIG. 1;
fig. 3 is a schematic structural diagram of the soft-package battery cell in fig. 2;
FIG. 4 is a schematic structural view of the insulating housing of FIG. 2;
FIG. 5 is a schematic structural view of the first arcuate shell of FIG. 2;
FIG. 6 is a schematic structural view of the second arcuate shell of FIG. 2;
fig. 7 is a falling state diagram of the button soft package lithium battery in fig. 1.
Wherein, in the figures, the respective reference numerals:
1. soft-packaged battery cells; 11. a cell body; 111. folding edges; 12. a positive plate; 13. a negative plate; 2. a housing; 21. an insulating case; 211. a housing; 2111. accommodating grooves; 212. an inner shell; 2121. a card slot; 213. a first arcuate shell; 2131. a first limit protrusion; 2132. a first limit groove; 214. a second arcuate shell; 2141. a second limit bulge; 2142. a second limit groove; 215. an empty avoiding groove; 22. a positive electrode case; 221. identifying the mark; 23. a negative electrode case; 24. clamping convex; 3. an insulating sleeve.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 4, a button-type soft package lithium battery provided by the present invention will now be described. The button soft package lithium battery comprises a soft package battery cell 1 and a shell 2, wherein the soft package battery cell 1 comprises a battery cell body 11, a positive plate 12 and a negative plate 13, and the positive plate 12 and the negative plate 13 are used for leading current out of the battery cell body 11;
the shell 2 comprises an insulating shell 21, a positive electrode shell 22 and a negative electrode shell 23, and both the positive electrode shell 22 and the negative electrode shell 23 are conductive;
the positive electrode shell 22 and the negative electrode shell 23 are respectively installed at the upper end and the lower end of the insulating shell 21 so as to encapsulate the soft package battery cell 1 in the shell 2;
positive electrode tab 12 is conductively connected to positive can 22 and negative electrode tab 13 is conductively connected to negative can 23.
Compared with the prior art, the button soft package lithium battery provided by the invention has the advantages that the positive electrode shell 22 and the negative electrode shell 23 are respectively arranged at the upper end and the lower end of the insulating shell 21 to form the shell 2, so that the outline size of the shell 2 is convenient to control, the outline sizes of the shells 2 produced in batch are the same, and the size tolerance among the shells 2 is reduced, therefore, after the soft package battery cell 1 is packaged in the shell 2, the outline size of the shell 2 is the outline size of the button soft package lithium battery, so that the size tolerance of the button soft package lithium battery is reduced, the button soft package lithium battery is convenient to install and use by a user, and meanwhile, the replacement and maintenance; the soft package lithium battery cell 1 is positioned in the shell 2 and can be protected by the shell 2, so that the soft package lithium battery cell 1 is prevented from being deformed when the button soft package lithium battery is dropped, impacted by external force and the like, the button soft package lithium battery is damaged, and the failure rate of the button soft package lithium battery is reduced; the positive electrode shell 22 and the negative electrode shell 23 are mounted at the upper end and the lower end of the insulating shell 21, so that the positive electrode shell 22 and the negative electrode shell 23 can be mounted in an insulating mode through the insulating shell 21, and short circuit of the button soft package lithium battery is avoided.
Specifically, the insulating case 21 is a plastic member.
Specifically, the positive electrode can 22 and the negative electrode can 23 are both hollow circular truncated cones.
Further, referring to fig. 2 to 4, as a specific embodiment of the button soft package lithium battery provided by the present invention, the insulating case 21 is provided with the accommodating groove 2111, the cell body 11 is provided with the folded edge 111, and the folded edge 111 extends into the accommodating groove 2111, so that the cell body 11 is close to the insulating case 21 as much as possible, the size of the insulating case 21 is reduced, the phenomenon that the folded edge 111 occupies too much space in the insulating case 21 to cause the insulating case 21 to have an excessively large size is avoided, and the insulating case 21 can accommodate a plurality of soft package cells 1 with different sizes by changing the size of the folded edge 111 extending into the accommodating groove 2111, thereby improving the compatibility of the case 2; the spacing hem 111 of cell wall ability of holding tank 2111 avoids soft-packaged electrical core 1 freely to remove in casing 2, leads to soft-packaged electrical core 1 and 2 collisions of casing and influences the life of the soft-packaged lithium cell of button.
Specifically, the accommodation groove 2111 is a through groove that communicates the inside and outside of the insulating case 21.
Further, referring to fig. 2 and fig. 4, as a specific embodiment of the button soft package lithium battery provided by the present invention, the accommodating groove 2111 extends along the circumferential direction of the insulating casing 21, so that the upper portion of the battery cell body 11 is aligned with the positive electrode casing 22, and the lower portion of the battery cell body 11 is aligned with the negative electrode casing 23, thereby improving the rationality of the position installation of the soft package battery cell 1 in the casing 2, avoiding the unreasonable position installation of the soft package battery cell 1 in the casing 2, and reducing the compatibility of the casing 2 in installing the soft package battery cells 1 with different sizes.
Further, referring to fig. 1, fig. 2 and fig. 4, as a specific embodiment of the button soft package lithium battery provided by the present invention, the button soft package lithium battery further includes an insulating sleeve 3 sleeved on the insulating shell 21, the insulating sleeve 3 can separate the outside from the inside of the housing 2, and wrap the folded edge 111 in the insulating sleeve 3, and at the same time, foreign objects can be reduced from the accommodating groove 2111 into the housing 2, so as to improve the integrity of the button soft package lithium battery, reduce the risk of short circuit of the button soft package lithium battery, and prolong the service life of the button soft package lithium battery.
Specifically, insulating sleeve 3's upper and lower both ends laminate with casing 2 respectively to improve the leakproofness of the soft packet of lithium cell of button, prolong the life of the soft packet of lithium cell of button.
Further, referring to fig. 1, fig. 4 and fig. 7, as a specific embodiment of the button soft package lithium battery provided by the present invention, the orthographic projections of the positive electrode shell 22 and the negative electrode shell 23 along the up-down direction are both located in the orthographic projection of the insulating shell 21 along the up-down direction, when the button soft package lithium battery falls on a flat ground or a desktop, the positive electrode shell 22 and the negative electrode shell 23 cannot contact with the ground or the desktop at the same time through the support of the insulating shell 21, so as to avoid short circuit of the button soft package lithium battery.
Further, referring to fig. 1, fig. 2 and fig. 4, as an embodiment of the button soft-package lithium battery provided by the present invention, the insulating case 21 includes an outer case 211 and inner cases 212 disposed at upper and lower ends of the outer case 211;
the positive electrode can 22 and the negative electrode can 23 are respectively arranged outside the inner can 212 to encapsulate the insulating can 21, the positive electrode can 22 and the negative electrode can 23 into the can 2;
the upper end of the outer wall of insulating casing 21 aligns with the lower extreme of the outer wall of positive shell 22, the lower extreme of the outer wall of insulating casing 21 aligns with the upper end of the outer wall of negative pole shell 23, in order to improve casing 2's wholeness, avoid positive shell 22 and negative pole shell 23 to bulge shell 211 and influence the installation and use of the soft packet lithium cell of button, be convenient for simultaneously control insulating casing 21, the cross sectional dimension of positive shell 22 and negative pole shell 23, make positive shell 22 and negative pole shell 23 can not contact with ground or desktop simultaneously.
Specifically, the upper portion of casing 2 is the round platform that the diameter upwards reduces gradually from bottom to top, and the lower part of casing 2 is the round platform that the diameter reduces gradually from top to bottom to the outside profile longitudinal symmetry of casing 2 makes the soft packet of lithium cell of button close with the shape of the button cell on the market, and the user of being convenient for uses, can also avoid the soft packet of lithium cell short circuit of button after the soft packet of lithium cell of button falls.
Further, referring to fig. 2 and fig. 4, as a specific embodiment of the button soft-package lithium battery provided by the present invention, a clamping groove 2121 is disposed on the inner casing 212, a clamping protrusion 24 is disposed on the positive casing 22, and a clamping protrusion 24 is disposed on the negative casing 23; or
The inner shell 212 is provided with a clamping protrusion, the positive shell 22 is provided with a clamping groove, and the negative shell 23 is provided with a clamping groove; or
The inner shell 212 is provided with a clamping groove 2121 and a clamping protrusion, the positive shell 22 is provided with a clamping protrusion 24 and a clamping groove, and the negative shell 23 is provided with a clamping protrusion 24 and a clamping groove;
the clamping protrusions 24 can extend into the clamping grooves 2121 to clamp the positive electrode shell 22 and the negative electrode shell 23 on the insulating shell 21 respectively, and the structure is simple, installation is convenient, and assembly efficiency is high.
Further, referring to fig. 2, fig. 5 and fig. 6, as an embodiment of the button soft package lithium battery provided by the present invention, the insulating casing 21 includes a first arc-shaped casing 213 and a second arc-shaped casing 214 which are spliced along a circumferential direction of the insulating casing 21, so as to place the soft package battery cell 1 in the insulating casing 21, thereby improving assembly efficiency;
the end part of the first arc-shaped shell 213 extending along the circumferential direction of the insulating shell 21 is provided with a first limiting protrusion 2131, and the inner side or the outer side of the first limiting protrusion 2131 is provided with a first limiting groove 2132; a second limiting protrusion 2141 corresponding to the first limiting groove 2132 is arranged at the end of the second arc-shaped shell 214 extending along the circumferential direction of the insulating shell 21, and a second limiting groove 2142 corresponding to the first limiting protrusion 2131 is arranged on the inner side or the outer side of the second limiting protrusion 2141;
the first limiting protrusions 2131 can extend into the second limiting grooves 2142, the second limiting protrusions 2141 can extend into the first limiting grooves 2132, the second limiting protrusions 2141 are limited by the first limiting grooves 2132, and the first limiting protrusions 2131 are limited by the second limiting grooves 2142, so that the stability of the first arc-shaped shell 213 and the second arc-shaped shell 214 after splicing is ensured, and the first arc-shaped shell 213 and the second arc-shaped shell 214 are prevented from being dislocated due to relative movement in the vertical direction, the internal and external direction and the circumferential direction of the insulating shell 21; the spliced first arc-shaped shell 213 and second arc-shaped shell 214 are connected together through the positive electrode shell 22 and the negative electrode shell 23, and the structure is simple and the assembly is convenient.
In particular, the first arc shell 213 and the second arc shell 214 can also be connected by the insulating sleeve 3.
Further, as a specific embodiment of the button soft package lithium battery provided by the present invention, the button soft package lithium battery further includes insulating layers (not shown in the figure) respectively disposed between the battery cell body 11 and the positive electrode shell 22 and between the battery cell body 11 and the negative electrode shell 23, so that the battery cell body 11, the positive electrode shell 22 and the negative electrode shell 23 are insulated from each other, thereby avoiding short circuit of the button soft package lithium battery, and improving safety of using the button soft package lithium battery.
Specifically, positive plate 12 buckles on the outer wall of insulating layer, and negative plate 13 buckles on the outer wall of insulating layer to with insulating between the outer wall of electric core body 11, positive plate 12 and the negative plate 13, avoid the soft packet of lithium cell short circuit of button.
Specifically, the insulating layer is an insulating adhesive paper.
Further, referring to fig. 2 and fig. 4, as a specific embodiment of the button soft package lithium battery provided by the present invention, the insulating casing 21 is further provided with a clearance groove 215 for avoiding the positive plate 12 and the negative plate 13, so as to reduce a distance between the cell body 11 and the insulating casing 21, so that the soft package cell 1 is more compactly installed in the casing 2, and the influence of an excessively large gap between the cell body 11 and the casing 2 on the stability of the soft package cell 1 installed in the casing 2 is avoided; meanwhile, the insulating shell 21 can be compatible with more soft-package battery cells 1 with different sizes, so that the compatibility of the shell 2 is improved.
Further, referring to fig. 1, as an embodiment of the button soft package lithium battery provided by the present invention, the positive electrode case 22 or the negative electrode case 23 is provided with an identification mark 221, preferably, the identification mark 221 is provided on the positive electrode case 22 to record the production specification of the button soft package lithium battery.
Specifically, the identification mark 221 is a two-dimensional code.
The invention also provides an assembly method of the button soft package lithium battery, which comprises the following steps:
s1: welding the positive plate 12 of the soft-package battery cell 1 into the positive shell 22; welding the negative plate 13 of the soft package battery cell 1 into the negative shell 23; respectively fixing insulating layers at the upper end and the lower end of a cell body 11 of the soft-package cell 1;
s2: moving the positive electrode case 22 from the side of the cell body 11 to above the cell body 11, and moving the negative electrode case 23 from the side of the cell body 11 to below the cell body 11;
s3: splicing the first arc-shaped shell 213 and the second arc-shaped shell 214 to the outside of the cell body 11 to form an insulating shell 21;
s4: pushing the positive electrode can 22 downward to clamp the positive electrode can 22 to the upper end of the insulating can 21, and pushing the negative electrode can 23 upward to clamp the negative electrode can 23 to the lower end of the insulating can 21;
s5: the insulating sleeve 3 is sleeved outside the insulating shell 21.
According to the assembling method of the button soft-package lithium battery, the positive plate 12 of the soft-package battery cell 1 is welded in the positive shell 22, the negative plate 13 of the soft-package battery cell 1 is welded in the negative shell 23, then the positive shell 22 is moved to the upper side of the battery cell body 11 from the side of the battery cell body 11 of the soft-package battery cell 1, when the negative shell 23 is moved to the lower side of the battery cell body 11 from the side of the battery cell body 11, the positive plate 12 can be bent along with the movement of the positive shell 22, and the negative plate 13 can be bent along with the movement of the negative shell 23; since the positive electrode can 22 has been moved above the cell body 11 and the negative electrode can 23 has been moved below the cell body 11, by splicing the first arc-shaped can 213 and the second arc-shaped can 214 to the outside of the cell body 11 to form the insulating can 21, interference of the positive electrode can 22 and the negative electrode can 23 with the first arc-shaped can 213 and the second arc-shaped can 214 is avoided, the assembly efficiency is improved, and the assembly difficulty is reduced; the insulating shell 21, the positive shell 22 and the negative shell 23 are assembled together to form the shell 2, and the soft package battery core 1 is packaged in the shell 2, so that the dimensional tolerance of the button soft package lithium battery is reduced, and the button soft package lithium battery is convenient to install and use by a user; establish insulation support 3 at insulating casing 21 overcoat, reduced in foreign object gets into casing 2, improved the wholeness of the soft packet of lithium cell of button.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Button soft-packaged lithium cell, including soft-packaged electrical core, soft-packaged electrical core includes electric core body, positive plate and negative pole piece, the positive plate with the negative pole piece be used for certainly draw electric current, its characterized in that in the electric core body: the device also comprises a shell;
the shell comprises an insulating shell, a positive electrode shell and a negative electrode shell, and both the positive electrode shell and the negative electrode shell have conductivity;
the positive electrode shell and the negative electrode shell are respectively arranged at the upper end and the lower end of the insulating shell so as to encapsulate the soft package battery cell in the shell;
the positive plate is electrically connected with the positive shell, and the negative plate is electrically connected with the negative shell.
2. The button lithium-ion battery pack of claim 1, wherein: the battery cell is characterized in that the insulating shell is provided with a holding tank, the battery cell body is provided with a folded edge, and the folded edge extends into the holding tank.
3. The button lithium-ion battery pack of claim 2, wherein: the receiving groove extends in a circumferential direction of the insulating case.
4. The button lithium-ion battery pack of claim 2, wherein: the insulating sleeve is sleeved on the insulating shell.
5. The button lithium-ion battery pack of claim 1, wherein: and the orthographic projections of the positive electrode shell and the negative electrode shell in the vertical direction are positioned in the orthographic projections of the insulating shell in the vertical direction.
6. The button lithium-ion battery pack of claim 5, wherein: the insulating shell comprises an outer shell and inner shells arranged at the upper end and the lower end of the outer shell;
the positive electrode shell and the negative electrode shell are respectively arranged outside the inner shell;
the upper end of the outer wall of the insulating shell is aligned with the lower end of the outer wall of the positive electrode shell, and the lower end of the outer wall of the insulating shell is aligned with the upper end of the outer wall of the negative electrode shell.
7. The button lithium-ion battery pack of claim 6, wherein: the inner shell is provided with a clamping groove or/and a clamping protrusion, the positive electrode shell is correspondingly provided with a clamping protrusion or/and a clamping groove, and the negative electrode shell is correspondingly provided with a clamping protrusion or/and a clamping groove;
the clamping protrusions can extend into the clamping grooves to clamp the positive electrode shell and the negative electrode shell on the insulating shell respectively.
8. The button lithium-ion battery pack of claim 6, wherein: the insulation shell comprises a first arc-shaped shell and a second arc-shaped shell which are spliced along the circumferential direction of the insulation shell;
a first limiting bulge is arranged at the end part of the first arc-shaped shell extending along the circumferential direction of the insulating shell, and a first limiting groove is arranged on the inner side or the outer side of the first limiting bulge; a second limiting protrusion corresponding to the first limiting groove is arranged at the end part of the second arc-shaped shell extending along the circumferential direction of the insulating shell, and a second limiting groove corresponding to the first limiting protrusion is arranged on the inner side or the outer side of the second limiting protrusion;
the first limiting protrusion can extend into the second limiting groove, and the second limiting protrusion can extend into the first limiting groove.
9. The button lithium-ion battery pack of claim 1, wherein: the battery also comprises insulating layers respectively arranged between the battery cell body and the positive electrode shell and between the battery cell body and the negative electrode shell.
10. The button soft package lithium battery assembling method is characterized in that: the method comprises the following steps:
welding a positive plate of the soft-packaged cell into a positive shell; welding the negative plate of the soft-package battery cell in a negative shell; respectively fixing insulating layers at the upper end and the lower end of a cell body of the soft-packaged cell;
moving the positive electrode shell from the side of the battery cell body to the upper part of the battery cell body, and moving the negative electrode shell from the side of the battery cell body to the lower part of the battery cell body;
splicing a first arc-shaped shell and a second arc-shaped shell to the outer side of the battery cell body to form an insulating shell;
pushing the positive electrode shell downwards to clamp the positive electrode shell at the upper end of the insulating shell, and pushing the negative electrode shell upwards to clamp the negative electrode shell at the lower end of the insulating shell;
and sleeving the insulating sleeve outside the insulating shell.
CN201911303545.9A 2019-12-17 2019-12-17 Button soft package lithium battery and assembling method thereof Pending CN113078401A (en)

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