CN217062295U - High-sealing-performance battery - Google Patents

Abstract

The utility model discloses a high-tightness battery, which relates to the technical field of battery manufacturing and comprises two upper and lower welded shells and a battery cell main body positioned in the two shells, wherein the electrode lug of the battery cell main body is of a multilayer structure and extends out between the two shells, the upper and lower sides of the electrode lug are respectively welded with the upper and lower shells, through the upper and lower shells, the aluminum shell can be formed by one-step stamping, the aluminum plate has strong stamping freedom, the manufacturing process is simple, the cost is reduced, meanwhile, a new electrode lug of a multilayer structure is arranged, concretely, the two sides of the electrode lug main body are connected with aluminum strips through an insulating layer made of PP or PE materials by bonding, hot melting and injection molding, then the aluminum strips are welded with the two shells, the electrode lug and the shells can be firmly and hermetically connected, various requirements of the battery are met, the electrolyte leakage is prevented, and the electrode lug and the shells are electrically connected to cause short circuit, the sealing performance of the shell is improved.

Description

High-sealing-performance battery

Technical Field

The utility model relates to a battery manufacturing technology field, concretely relates to high leakproofness battery.

Background

The shell of the existing hard shell battery is usually formed by integral repeated punching, the manufacturing cost is high, the sealing insulation between the pole lug and the shell is one of the difficult problems in the battery manufacturing process, the sealing is used for preventing the leakage of electrolyte, and the insulation means that the short circuit between the pole lug and the shell causes the short circuit of a battery core to be out of control, so a high-sealing battery needs to be provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high leakproofness battery to solve the above-mentioned multinomial defect that leads to among the prior art.

The utility model provides a high leakproofness battery, includes two upper and lower welded casings and is located two electric core main part in the casing, the utmost point ear of electric core main part stretches out between two casings for multilayer structure and utmost point ear, the upper and lower both sides of utmost point ear respectively with weld between two upper and lower casings.

Preferably, the tab comprises a tab main body in the middle, insulating layers are arranged on the upper side and the lower side of the tab main body, and aluminum strips are arranged on the insulating layers.

Preferably, the insulating layer is made of PP or PE and has a layer number of one or more.

Preferably, the tab main body is made of aluminum or nickel.

Preferably, the shell at the upper end is provided with a liquid injection hole.

Preferably, the shell is made of aluminum.

The utility model has the advantages of: through the upper and lower two halves casing that set up, but aluminium matter casing one-time stamping forming, the freedom of aluminum plate punching press is strong, the manufacturing process is simple, reduce the cost, and simultaneously, the utmost point ear of new multilayer structure has been set up, concretely, through bonding in the both sides of utmost point ear main part, the hot melt, the insulating layer of PP or PE material of moulding plastics connects the aluminium strip, weld together between aluminium strip and two casings again, can be with the firm sealing connection of utmost point ear and casing, reach each item requirement of battery, prevent that electrolyte from revealing, thereby the utmost point ear takes place to be connected with the casing electricity and leads to the short circuit, the leakproofness of casing has been improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the part of fig. 1.

Fig. 3 is a sectional view of a tab.

The battery comprises a shell, a battery core main body, a tab main body, an insulating layer, an aluminum strip and a liquid injection hole, wherein the shell is 1 part, the battery core main body is 2 parts, the tab is 3 parts, the tab main body is 4 parts, the insulating layer is 5 parts, and the liquid injection hole is 7 parts.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 to 3, a high-sealing battery includes two shells 1 welded up and down and a cell main body 2 located in the two shells 1, a tab 3 of the cell main body 2 is of a multilayer structure and the tab 3 extends out between the two shells 1, and the upper and lower sides of the tab 3 are welded with the upper and lower shells 1, respectively.

In this embodiment, utmost point ear 3 includes middle utmost point ear main part 4, both sides all are equipped with insulating layer 5 about utmost point ear main part 4, be equipped with aluminium strip 6 on insulating layer 5.

In this embodiment, the insulating layer 5 is made of PP or PE and has 1 or 2 layers.

In this embodiment, the tab body 4 is made of aluminum or nickel.

In this embodiment, the casing 1 at the upper end is provided with a liquid injection hole 7 for injecting electrolyte, and the position of the liquid injection hole 7 is set according to the product requirement.

In this embodiment, the housing 1 is made of aluminum.

The single end utmost point ear 3 of electricity core main part 2 or both ends utmost point ear 3 are all within the utility model discloses within the protection scope.

The shape of the cell main body 2 can be any shape within the protection scope of the present application.

Through the upper and lower two halves casing 1 that set up, but aluminium matter casing 1 one-time stamping forming, the freedom of aluminum plate punching press is strong, the manufacturing process is simple, the cost is reduced, and simultaneously, new multilayer structure's utmost point ear 3 has been set up, it is specific, through bonding in the both sides of utmost point ear main part 4, the hot melt, mould plastics insulating layer 5 of PP or PE material and connect aluminium strip 6, weld aluminium strip 6 and two casing 1 together again, can be with utmost point ear 3 and the firm sealing connection of casing 1, reach each item requirement of battery, prevent that electrolyte from revealing, thereby utmost point ear 3 takes place to be connected with casing 1 electricity and leads to the short circuit, the leakproofness of casing 1 has been improved.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes within the scope of the invention or within the scope equivalent to the invention are all embraced by the invention.

Claims (1)

1. A high-sealing-performance battery is characterized by comprising two shells (1) which are welded up and down and a battery cell main body (2) which is positioned in the two shells (1), wherein a tab (3) of the battery cell main body (2) is of a multilayer structure, the tab (3) extends out of the two shells (1), and the upper side and the lower side of the tab (3) are respectively welded with the upper shell (1) and the lower shell (1);

the tab (3) comprises a tab main body (4) in the middle, insulating layers (5) are arranged on the upper side and the lower side of the tab main body (4), and aluminum strips (6) are arranged on the insulating layers (5);

the insulating layer (5) is made of PP or PE and has 1 or 2 layers;

the lug main body (4) is made of aluminum or nickel;

the casing (1) at the upper end is provided with a liquid injection hole (7);

the shell (1) is made of aluminum.

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