Aluminum plastic film packaging system
Technical field
The utility model belongs to battery manufacturing equipment technical field, more particularly, it relates to one kind is used for encapsulating lithium ion
The packaging system of cell aluminum-plastic membrane.
Background technology
Battery directly affects the experience of electronic device user as the energy of electronic equipment, the quality of its performance.And
Now in battery industry, being most widely used of lithium battery, develop the swiftest and the most violent, compared with conventional batteries, lithium ion battery has
There are many merits, the market advantage is obvious.It is in air for the lithium hexafluoro phosphate as electrolyte in lithium-ion battery electrolytes
In highly unstable material, it is easily reacted with water, can produce harmful effect to the performance of lithium ion battery after reacting, because
This, the encapsulation of lithium ion battery is the key technology that lithium ion battery makes technology.
Plastic-aluminum packaging film due to having high-strength mechanical performance, good seal, excellent waterproof antioxygenic property, extensively
General be applied to polymer Li-ion battery produce in.The Chinese utility model patent of Patent No. 201420735804.1 discloses
A kind of lithium ion battery aluminum plastic film packaging system, this packaging system includes upper cover and low head, is provided with and adds below low head
Thermal element, is heated to low head by heating element heater, realizes the melting encapsulation of aluminum plastic film.Stretch because aluminum plastic film itself has
In encapsulation, contracting, haves such problems as that two films are uneven, closedtop arc.Once appearance two films are uneven, closedtop arc bad for battery core,
Battery core height dimension not only can be changed, affect product turnout, also can cause closedtop leakage, corrosion uses the equipment of battery, or
Closedtop superfusion short circuit, leads to battery explosion, security incident occurs.
Utility model content
The purpose of this utility model be provide a kind of when can solve to encapsulate lithium ion battery top margin two film is uneven, closedtop
The aluminum plastic film packaging system of arc problem.
To achieve these goals, the utility model takes following technical solution:
Aluminum plastic film packaging system, including:Upper cover and low head, upper cover and low head are correspondingly arranged up and down;On described
End socket includes:The nip portion contacting with aluminum plastic film, described nip portion bottom surface is provided with lug stopper slot;Can be vertically
Movably it is arranged at the cutting part outside described nip portion, described cutting part includes the first side cutting knife, middle cutting knife and the second side
Cutting knife, described middle cutting knife is located between described first side cutting knife and the second side cutting knife, described first side cutting knife, middle cutting knife and
Second side cutting knife is respectively provided with downward projection of cutting tip;Between described first side cutting knife and middle cutting knife and described second side
It is provided with lug groove, the position of described lug groove is corresponding with the position of described lug stopper slot between cutting knife and middle cutting knife.
Further, the two ends of described low head are provided with the aluminum plastic film limiting section on prominent surface thereon.
Further, the vertical section shape of described first side cutting knife and the second side cutting knife is triangular in shape, is respectively provided with one downward
Cutting tip.
Further, the vertical section of described first side cutting knife and the second side cutting knife is shaped as right angled triangle.
Further, the vertical section shape of described middle cutting knife is dovetail-shape, has two downward cutting tips.
From above technical scheme, top margin can be cut after closedtop by the utility model again, is providing for battery core
The situation of sufficient top margin width, reduces the bad situations such as uneven, the closedtop arc of battery core closedtop two film, solves battery core superelevation
Problem.The potting of the utility model packaging system is good, and product percent of pass is high, solves empty envelope, the leakage of lithium ion battery
Liquid etc. encapsulates problem, improves the security of lithium ion battery.
Brief description
In order to be illustrated more clearly that the utility model embodiment, below will be to required in embodiment or description of the prior art
The accompanying drawing using do simple introduce it should be apparent that, drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the top view of Fig. 1;
Fig. 4 is schematic diagram during upper and lower end socket pressing;
Fig. 5 is schematic diagram during cutting part cutting after upper and lower end socket presses.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in detail, when describing the utility model embodiment in detail, for ease of
Illustrate, represent that the accompanying drawing of device architecture can be disobeyed general ratio and be done partial enlargement, and described schematic diagram is example, its here
The scope of the utility model protection should not limited.It should be noted that accompanying drawing is all in the form of very simplification and all using non-
Accurately ratio, only in order to purpose that is convenient, clearly aiding in illustrating the utility model embodiment.
As shown in Figure 1, Figure 2 and Figure 3, packaging system of the present utility model includes upper cover 1 and low head 2, upper cover 1
In the top of low head 2, upper and lower end socket can vertically relative movement.The two ends of low head 2 are provided with prominent table thereon
The aluminum plastic film limiting section 2a in face, places aluminum plastic film to be packaged between aluminum plastic film limiting section 2a.Upper cover 1 includes nip portion 1-1
With cutting part 1-2, nip portion 1-1 is corresponding with low head 2 position, and can be pressed on low head 2.Arrange on nip portion 1-1 bottom surface
There is a pair spaced apart lug stopper slot 1-1a, the position of lug stopper slot 1-1a is corresponding with battery pole ear position, lug
Stopper slot 1-1a is the groove of the thickness direction extension along nip portion 1-1, is used for accommodating lug during encapsulation.For the ease of description,
The side that aluminum plastic film during encapsulation is stretched out in end socket is defined as outside, and the side that battery core is located is inner side.Cutting part 1-2 is arranged at
The outside of nip portion 1-1, and can vertically move up and down.By raised line/groove or can lead between cutting part and nip portion
The conventional frame for movement such as rail/guide groove is connected, so that cutting part is movably arranged at outside nip portion.
Cutting part 1-2 includes the first side cutting knife 1-2a, middle cutting knife 1-2b and the second side cutting knife 1-2c, middle cutting knife 1-2b
Between the first side cutting knife 1-2a and the second side cutting knife 1-2c, between the first side cutting knife 1-2a and middle cutting knife 1-2b and
It is provided with lug groove 1-2d, the position of lug groove and lug limit in nip portion between second side cutting knife 1-2c and middle cutting knife 1-2b
The position of position groove is corresponding.The vertical section shape (Fig. 1) triangular in shape of the first side cutting knife 1-2a and the second side cutting knife 1-2c, all has
There is a downward cutting tip a it is preferred that the vertical section of the first side cutting knife 1-2a and the second side cutting knife 1-2c is shaped as right angle three
Angular.The vertical section shape of middle cutting knife 1-2b is dovetail-shape, has two downward cutting tip a, middle cutting knife 1-2b position
Between two lug groove 1-2d.First, second side cutting knife, middle cutting knife are respectively provided with cutting tip, when cutting part moves down cutting
When, cutting tip is the cut point contacting with aluminum plastic film first so that cutting knife, from piercing from cut point, forms after piercing and cuts
Shear force, is conducive to quick, smooth cutting.
Below the course of work of the utility model packaging system is illustrated:
During encapsulation, will treat that battery core is placed in encapsulation fixture (pressing plate), and encapsulation fixture be put into and on packaging machine, carries out top side seal,
When not pressing, upper cover is as shown in Figure 1 with the state of low head;
As shown in figure 4, upper cover 1 is moved downward to its nip portion 1-1 being pressed on aluminum plastic film (not shown), upper cover 1 He
Low head 2 matches plastic-aluminum film compacting, heats encapsulation to aluminum plastic film;
As shown in figure 5, after encapsulation finishes, upper cover and low head still keep impaction state, and nip portion 1-1 continues to be pressed in
On aluminum plastic film, cutting part 1-2 starts to move down, the first side cutting knife 1-2a, middle cutting knife 1-2b and the second side cutting knife 1-2c
Cutting tip pierces in aluminum plastic film first, at the incision harder tab of quality, then cutting part pass through shearing force by top margin and
The unnecessary plastic-aluminum packaging film in outside cuts away.
The utility model passes through to arrange cutting part outside nip portion, after battery core completes top side seal, can be immediately to many
Remaining aluminum plastic film is excised, and makes battery core closedtop side straight, overcomes that battery core closedtop two film is uneven, the problem of closedtop arc, changes
It has been apt to melten gel situation, it is to avoid the situation of battery core superelevation occurs, and can effectively improve lithium ion battery production yield.
Above example is only not intended to limit in order to the technical solution of the utility model to be described, although with reference to above-mentioned enforcement
Example has been described in detail to the utility model, it should be understood by a person of ordinary skill in the art that still can be to this reality
Modified or equivalent with new specific embodiment, and repair without departing from any of the utility model spirit and scope
Change or equivalent, it all should be covered among right of the present utility model.