CN205846022U

CN205846022U - Soft bag lithium ionic cell end socket

Info

Publication number: CN205846022U
Application number: CN201620550779.9U
Authority: CN
Inventors: 高学兵; 胡军笑; 国瑞婷
Original assignee: Zhengzhou Setra New Energy Co Ltd
Current assignee: Zhengzhou Setra New Energy Co Ltd
Priority date: 2016-06-08
Filing date: 2016-06-08
Publication date: 2016-12-28
Anticipated expiration: 2026-06-08

Abstract

This utility model provides a kind of soft bag lithium ionic cell end socket, it includes encapsulating structure and lower encapsulating structure, described upper encapsulating structure includes upper bed-plate and the upper cover being fixed on described upper bed-plate, described lower encapsulating structure includes lower bottom base and the low head being fixed on described lower bottom base, the top of described upper cover has step, the top of described low head has the projection agreed with described step shape, arranges intermeshing dentalation on the end face of described upper cover and on the end face of described low head.This soft bag lithium ionic cell end socket has that design science, encapsulation be tight, end socket is difficult to dislocation, the advantage extending aqueous vapor permeation pathway.

Description

Soft bag lithium ionic cell end socket

Technical field

This utility model belongs to field of lithium, specifically, relate to a kind of soft bag lithium ionic cell end socket.

Background technology

Lithium ion battery is current state-of-the-art commercialization secondary cell, is widely used in various electronic product.Lithium from Sub-battery divides according to packaging material, can be divided into lithium-ion battery with steel shell, lithium ion battery with aluminum shell and flexible packing lithium ion battery.

Wherein, flexible packing lithium ion battery has that energy density is high, lightweight, metamorphosis is many, can make thin battery Etc. advantage, therefore electronic mobile product substantially uses flexible packing lithium ion battery as the energy at present.

The battery core of flexible packing lithium ion battery typically uses aluminum-plastic composite membrane to do film forming airbag, after the internal fluid injection of film airbag Film airbag mouth need to be packaged, with this, electrolyte within battery core is isolated with outside air.This film substantially divides three layers, Outer layer is nylon layer, and intermediate layer is aluminium lamination, and innermost layer is PP layer, carries out upper-lower heat seal by end socket during encapsulation so that PP layer Carry out hot melt and compress, reaching the purpose sealed, but owing to the packaging film of Soft Roll having aluminium lamination, therefore aqueous vapor can only pass through seal district PP layer permeate, but PP is porous polymer materials, and PP gradually can carry out permeating by porous that (principle of infiltration is Being permeated by the porous of PP, aqueous vapor penetrates into battery core main body interior meeting and electrolyte generation chemical reaction afterwards.), so can Cause battery core to rise gas, affect it and use.Industry present stage is being studied how in the case of not increasing seal width, it is achieved add The infiltration lane of long aqueous vapor, improves aqueous vapor and penetrates into the time within battery core, and then extend polymer battery core in an outdoor environment Service life.But the end socket seal district of prior art is smooth, it is impossible to extend the PP layer length at seal width Degree, it is impossible to well extend the service life of polymer battery core, giving increases the service life causes certain limitation.

In order to solve with present on problem, people are seeking a kind of preferably technical solution always.

Summary of the invention

The purpose of this utility model is for the deficiencies in the prior art, thus provides a kind of design science, encapsulates tight, envelope Head is difficult to dislocation, extends the soft bag lithium ionic cell end socket of aqueous vapor permeation pathway.

To achieve these goals, this utility model be the technical scheme is that a kind of soft bag lithium ionic cell end socket, Including upper encapsulating structure and lower encapsulating structure, described upper encapsulating structure includes upper bed-plate and the upper envelope being fixed on described upper bed-plate Head, described lower encapsulating structure includes lower bottom base and the low head being fixed on described lower bottom base, and the top of described upper cover has Step, the top of described low head has the projection agreed with described step shape, on the end face of described upper cover and described under Intermeshing dentalation is set on the end face of end socket.

Described on base, described step is U-shaped step.

Described on base, on described step surface and in described projection, intermeshing dentalation is set.

This utility model hinge structure has substantive distinguishing features and a progress, specifically, this utility model have with Lower advantage:

1, the opposite relative set step of upper and lower two end sockets and projection, both cooperate, the film airbag bag of lithium battery Being located at Kou between two end sockets, step and projection make the bag mouth bending degree of film airbag increase, in the feelings not increasing seal width Under condition, it is achieved lengthen the infiltration lane of aqueous vapor, improve aqueous vapor and penetrate into the time within battery core, and then prolongation polymer battery core exists Service life under outdoor environment.

2, flexibility increases, and has some big flex points, and the ability of the gas that blocks water improves.

3, arranging intermeshing dentalation on the end face of upper and lower end socket, skid resistance strengthens, it is to avoid two end sockets Relatively sliding and dislocation, the flatness requirement of end socket end face reduces, and difficulty of processing reduces.

It has, and design science, encapsulation be tight, end socket is difficult to dislocation, the advantage extending aqueous vapor permeation pathway.

Accompanying drawing explanation

Fig. 1 is the structural representation of soft bag lithium ionic cell end socket in this utility model.

Fig. 2 is the sectional view of soft bag lithium ionic cell end socket in this utility model.

In figure: 1. upper cover；2. low head；3. step；4. protruding；5. dentalation；6. upper bed-plate；7. lower bottom base.

Detailed description of the invention

Below by detailed description of the invention, the technical solution of the utility model is described in further detail.

As depicted in figs. 1 and 2, a kind of soft bag lithium ionic cell end socket, including upper encapsulating structure and lower encapsulating structure, described Upper encapsulating structure includes upper bed-plate 6 and the upper cover 1 being fixed on described upper bed-plate 6, and described lower encapsulating structure includes lower bottom base 7 With the low head 2 being fixed on described lower bottom base 7, the top of described upper cover 1 has step 3, and described step is U-shaped step, The top of described low head 2 has the projection 4 agreed with described step 3 shape.By projection 4 and the setting of step 3, add The bag mouth bending degree of film airbag, in the case of not increasing seal width, it is achieved lengthens the infiltration lane of aqueous vapor, improves aqueous vapor and oozes Thoroughly arriving the time within battery core, it addition, bending flex point is relatively big, the difficulty of aqueous vapor infiltration increases, and then prolongation polymer battery core exists Service life under outdoor environment.

On the end face of described upper cover 1 and on the end face of described low head 2, intermeshing dentalation 5 is set, described On step surface and in described projection, intermeshing dentalation 5 is set.Dentalation adds aqueous vapor to a certain extent Infiltration stroke, it is often more important that, add the skid resistance of upper and lower end socket, be difficult under external force relatively slide and misplace, The bag mouth of the film airbag between to has protective effect.

Finally should be noted that: it is only limited by above example in order to the technical solution of the utility model to be described System；Although being described in detail this utility model with reference to preferred embodiment, those of ordinary skill in the field should Understand: still detailed description of the invention of the present utility model can be modified or portion of techniques feature is carried out equivalent and replace Change；Without deviating from the spirit of technical solutions of the utility model, it all should contain the technical scheme being claimed at this utility model In the middle of scope.

Claims

1. a soft bag lithium ionic cell end socket, it is characterised in that: it includes encapsulating structure and lower encapsulating structure, described upper envelope Assembling structure includes upper bed-plate and the upper cover being fixed on described upper bed-plate, and described lower encapsulating structure includes lower bottom base and is fixed on Low head on described lower bottom base, the top of described upper cover has step, and the top of described low head has and described step The projection that shape is agreed with, arranges intermeshing dentalation on the end face of described upper cover and on the end face of described low head.

Soft bag lithium ionic cell end socket the most according to claim 1, it is characterised in that: described step is U-shaped step.

Soft bag lithium ionic cell end socket the most according to claim 1, it is characterised in that: with described projection on described step surface On intermeshing dentalation is set.