CN210245622U - Compound button type lithium-manganese battery - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a composite button type lithium manganese battery, which solves the problems that the installation process of a positive electrode cover arranged on the top opening of a negative electrode cover is complicated, the production efficiency of the battery is reduced, the produced button type lithium manganese battery negative electrode cover and the positive electrode cover are shells, the button type lithium manganese battery is greatly influenced by external environment and is easy to damage when being extruded by the outside so as to cause the failure of the battery, and comprises a negative electrode cover and a lithium sheet, wherein the positive electrode cover is arranged in the opening at the top of the negative electrode cover in an embedded manner, a positive electrode block is arranged at the middle position in the negative electrode cover, a diaphragm is arranged at the top of the positive electrode block, and the lithium sheet is arranged at the top of the diaphragm. The assembly efficiency of the battery is improved.

Description

Compound button type lithium-manganese battery

Technical Field

The utility model relates to the technical field of batteries, especially, relate to a compound button type lithium manganese battery.

Background

Lithium manganese batteries, one type of battery, are used in many fields because of their small size and large capacity. Especially, the button lithium manganese battery has the advantages of small volume, low internal resistance, stable discharge voltage and long service life. Lithium manganese button cell in the existing market comprises negative pole lid, lithium piece, diaphragm, positive plate, electrolyte, insulating seal circle and positive cover, and positive cover and negative pole lid form an organic whole through the pressure fit mode. When the button type lithium-manganese battery is produced, the positive cover is installed inside the top opening of the negative cover by using special equipment, the installation process is complicated, the production efficiency of the battery is reduced, the produced button type lithium-manganese battery negative cover and the produced positive cover are shells, the external environment influence is large, and the battery is easy to damage and lose efficacy when being extruded from the outside.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and having the positive plate cover among the prior art and installing negative pole lid open-top internally mounted process comparatively loaded down with trivial details, reduced the production efficiency of battery, the button lithium manganese battery negative pole lid and the positive plate cover that produce are the shell, receive external environment influence great, easy damaged shortcoming that makes the battery inefficacy when receiving external extrusion, and the compound button lithium manganese battery who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a compound button type lithium manganese cell, includes negative pole lid and lithium piece, positive pole lid is installed to the inside gomphosis of opening at negative pole lid top, positive pole piece has been laid to the inside intermediate position of negative pole lid, the diaphragm is installed at the top of positive pole piece, the lithium piece has been laid at the top of diaphragm, the sealing washer is installed to the inboard position of hugging closely the inner wall of negative pole lid, cavity between positive pole piece, sealing washer and the diaphragm fills the chamber for electrolyte, the negative pole lid is installed in the inside of protective case under and with the inner wall in close contact with of protective case down, the upper portion threaded connection protective case of protective case down, the structure that negative pole lid and positive pole lid are constituteed is inside at last protective case and the structure that the protective case is constituteed down.

Preferably, the diaphragm comprises a top film and an annular side wall, the annular side wall is punched on the outer side of the top film, the bottom surface of the top film is in contact with the lithium sheet, the bottom surface of the top film is in contact with the positive plate, and the outer surface of the annular side wall is in close contact with the middle of the sealing ring.

Preferably, the positive electrode cover comprises a top cover, a buckling groove, a lower pressing plate and a folding edge, the outer edge of the top cover is punched to form the folding edge which is turned over downwards, the lower pressing plate is welded to the outer side of the bottom of the top cover, and the buckling groove is punched at the position where the lower pressing plate is connected with the top cover.

Preferably, the buckling groove is embedded with the edge of the opening at the upper part of the negative electrode cover, the section of the lower pressing plate is in an inverted trapezoid shape, and the outer part of the lower pressing plate is tightly attached to the upper part of the inner side of the sealing ring.

Preferably, the negative electrode cover comprises a cover body and a turnover edge, the opening edge at the top of the cover body is punched to form the turnover edge which is outward along the diameter of the opening, and the turnover edge is arc-shaped and is matched with the buckling groove.

Preferably, the upper protective shell comprises an upper shell and an upper inner cavity, the upper inner cavity is formed in the upper shell, the lower protective shell comprises a lower shell and a lower inner cavity, and the lower inner cavity is formed in the lower shell.

Preferably, the contact position of the upper protective shell and the lower protective shell is laminated with an insulating film, the upper part of the inner side of the upper protective shell is provided with a plastic reinforcement, and the contact position of the upper protective shell and the positive electrode cover is laminated with a graphite film.

The utility model has the advantages that: the bent edge stamped on the edge of the opening at the top of the negative electrode cover is matched with the buckling groove stamped on the upper part of the lower pressing plate of the positive electrode cover, so that the positive electrode cover can be quickly buckled and mounted in the opening at the upper part of the negative electrode cover, the battery can be simply and quickly assembled, and the assembling efficiency of the battery can be improved; when the positive cover is arranged on the upper part of the negative cover, the lower pressing plate of the positive cover is tightly attached to the sealing ring to ensure the sealing property in the battery, so that the sealing property in the battery is ensured while the battery assembly efficiency is improved, and the production quality of the battery is ensured; the upper protective shell and the lower protective shell protect the batteries inside the upper protective shell and the lower protective shell, interference of the external environment on the batteries is reduced, the upper inner cavity and the lower inner cavity inside the upper protective shell and the lower protective shell collapse when being extruded outside, external impact force is reduced, the safety of the batteries is protected, and the protective performance of the batteries is improved.

Drawings

Fig. 1 is a schematic structural diagram of a composite button-type lithium manganese dioxide battery provided by the present invention;

fig. 2 is a schematic structural view of a positive cap of a composite button-type lithium manganese dioxide battery provided by the present invention;

fig. 3 is a schematic structural view of a negative cover of a composite button-type li-mn battery according to the present invention.

In the figure: 1 negative pole lid, 101 utmost point lid body, 102 turn over the hem, 2 positive pole lid, 21 apron, 22 lock groove, 23 holding down plate, 24 hems, 3 lithium pieces, 4 positive pole pieces, 5 sealing washers, 6 diaphragms, 61 epiphragmas, 62 cyclic annular lateral walls, 7 electrolyte chamber, 8 graphite film, 9 go up protective case, 91 epitheca, go up inner chamber 92, 10 lower protective case, 101 inferior valve, 102 lower inner chamber, 11 plastics reinforcement.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a composite button type lithium manganese battery comprises a negative cover 1 and a lithium sheet 3, wherein a positive cover 2 is embedded in an opening at the top of the negative cover 1, a positive block 4 is arranged in the middle of the inside of the negative cover 1, a diaphragm 6 is arranged at the top of the positive block 4, the lithium sheet 4 is arranged at the top of the diaphragm 6, a sealing ring 5 is arranged at a position close to the inner wall of the negative cover 1, a cavity between the positive block 4, the sealing ring 5 and the diaphragm 6 is an electrolyte filling cavity 7, the negative cover 1 is arranged in a lower protective shell 10 and is in close contact with the inner wall of the lower protective shell 10, the upper part of the lower protective shell 10 is in threaded connection with a protective shell 9, the structure consisting of the negative cover 1 and the positive cover 2 is arranged in a structure consisting of an upper protective shell 9 and a lower protective shell 10, the upper protective shell 9 and the lower protective shell 10 protect the battery therein, so as to reduce the interference of the external environment, and the upper inner cavity 92 and the lower inner cavity in the upper protective shell, the external impact force is reduced and transmitted to the battery, the safety of the battery is protected, and the protection performance of the battery is improved.

Further, the diaphragm 6 comprises a top film 61 and an annular side wall 62, the outer side of the top film 61 is punched to form the annular side wall 62, the bottom surface of the top film 61 is in contact with the lithium sheet 3, the bottom surface of the top film is in contact with the positive electrode sheet 4, and the outer surface of the annular side wall 62 is in close contact with the middle of the sealing ring 5.

Further, positive pole cover 2 includes top cap 21, lock groove 22, holding down plate 23 and book edge 24, the outer fringe punching press of top cap 21 becomes the book edge 24 that turns over down, the outside welding of top cap 21 bottom has holding down plate 23, the position punching press that holding down plate 23 and top cap 21 are connected has lock groove 22, the lock groove 22 of the holding down plate 23 upper portion punching press of 1 positive pole cover of the cooperation of the book edge 112 of 1 top opening edge punching press of negative pole cover 1, do benefit to the quick lock of positive pole cover 2 and install inside messenger's battery assembly of 1 upper portion opening of negative pole cover, improve the packaging efficiency of battery.

Further, lock groove 22 and the edge looks gomphosis of negative pole lid 1 upper portion opening, holding down plate 23 cross-section is down trapezoidal form, and the outside of holding down plate 23 closely laminates the inboard upper portion of sealing washer 5, and the holding down plate 23 of positive pole lid 2 closely laminates sealing washer 5 when positive pole lid 2 is installed on negative pole lid 1 upper portion and guarantees the inside leakproofness of battery, guarantees the inside leakproofness of battery when improving battery packaging efficiency, ensures the production quality of battery.

Further, the negative electrode cover 1 includes a cover body 111 and a turning flange 112, the opening edge at the top of the cover body 111 is punched to be the turning flange 112 along the opening diameter, and the turning flange 112 is arc-shaped and is matched with the fastening groove 22.

Further, the upper protective shell 9 includes an upper shell 91 and an upper inner cavity 92, the upper inner cavity 92 is opened inside the upper shell 91, the lower protective shell 10 includes a lower shell 101 and a lower inner cavity 102, and the lower inner cavity 102 is opened inside the lower shell 101.

Furthermore, an insulating film is attached to the contact position of the upper protective shell 9 and the lower protective shell 10, a plastic reinforcement 11 is mounted on the upper portion of the inner side of the upper protective shell 9, the plastic reinforcement 11 is a plastic ring, and a graphite film 8 is attached to the contact position of the upper protective shell 9 and the positive electrode cover 2.

In this embodiment, the bent flange 112 stamped at the top opening edge of the negative electrode cap 1 is matched with the fastening groove 22 stamped at the upper part of the lower pressing plate 23 of the positive electrode cap 2, so as to facilitate the rapid fastening and installation of the positive electrode cap 2 into the opening at the upper part of the negative electrode cap 1, so that the battery assembly is simple and rapid, and the battery assembly efficiency is improved, the battery is ensured, the battery is placed into the lower protective case 10 after the battery assembly is completed, then the upper protective case 9 is connected through the threaded port at the upper part of the lower protective case 10, the battery inside the upper protective case 9 and the lower protective case 10 are protected, the interference of the external environment on the battery is reduced, the upper inner cavity 92 and the lower inner cavity inside the upper protective case 9 and the lower protective case 10 are contracted when being extruded from the outside, the external impact force is reduced and transmitted to the battery, the safety of the battery is protected, the protection performance of the battery is improved, and the conductivity of the graphite film 8 between the positive electrode cover 2 and the upper protective shell 9 is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides a compound button type lithium manganese dioxide battery, includes negative pole lid (1) and lithium piece (3), its characterized in that, positive pole lid (2) are installed to the inside gomphosis of opening at negative pole lid (1) top, positive pole piece (4) have been laid to the inside intermediate position of negative pole lid (1), diaphragm (6) are installed at the top of positive pole piece (4), lithium piece (3) have been laid at the top of diaphragm (6), sealing washer (5) are installed to the position that the inner wall was hugged closely to negative pole lid (1) inboard, cavity between positive pole piece (4), sealing washer (5) and diaphragm (6) fills chamber (7) for electrolyte, negative pole lid (1) are installed in the inside of protective case (10) under and with the inner wall in close contact with protective case (10) down, the upper portion threaded connection protective case (9) of protective case (10) down, the structure that negative pole lid (1) and positive pole lid (2) are constituteed is at last protective case (9) and the protective structure of protective case (10) constitution under with And (4) a section.

2. The lithium-manganese battery of claim 1, wherein the separator (6) comprises a top film (61) and a ring-shaped side wall (62), the outer side of the top film (61) is punched to form the ring-shaped side wall (62), the bottom surface of the top film (61) is in contact with the lithium sheet (3) and the bottom surface is in contact with the positive sheet (4), and the outer surface of the ring-shaped side wall (62) is in close contact with the middle of the sealing ring (5).

3. The composite button type lithium-manganese battery according to claim 1, wherein the positive electrode cover (2) comprises a top cover (21), a fastening groove (22), a lower pressing plate (23) and a folded edge (24), the folded edge (24) which is turned downwards is punched at the outer edge of the top cover (21), the lower pressing plate (23) is welded at the outer side of the bottom of the top cover (21), and the fastening groove (22) is punched at the position where the lower pressing plate (23) is connected with the top cover (21).

4. The lithium-manganese battery of claim 3, wherein the locking groove (22) is engaged with the edge of the opening at the upper part of the negative cover (1), the cross section of the lower pressing plate (23) is in an inverted trapezoid shape, and the outer part of the lower pressing plate (23) is tightly attached to the upper part of the inner side of the sealing ring (5).

5. The lithium-manganese battery of claim 1, wherein the negative electrode cover (1) includes a cover body (111) and a folded edge (112), the opening edge of the top of the cover body (111) is punched to form the folded edge (112) along the opening diameter, and the folded edge (112) is arc-shaped and matches with the buckling groove (22).

6. The lithium-manganese battery of claim 1, wherein the upper casing (9) comprises an upper casing (91) and an upper inner cavity (92), the upper inner cavity (92) is opened inside the upper casing (91), the lower casing (10) comprises a lower casing (101) and a lower inner cavity (102), and the lower inner cavity (102) is opened inside the lower casing (101).

7. The lithium-manganese battery as claimed in claim 1, wherein the upper casing (9) and the lower casing (10) are bonded with an insulating film, a plastic reinforcement (11) is mounted on the upper portion of the inner side of the upper casing (9), and a graphite film (8) is bonded on the contact portion of the upper casing (9) and the positive electrode cover (2).

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