A kind of method of square polymer battery length direction series connection
Technical field
The present invention relates to a kind of square polymer battery, be specifically related to a kind of method of square polymer battery length direction series connection.
Background technology
Lithium ion battery is the storage battery of a kind of novel high-performance of high speed development nearly ten years, its volume is little, lightweight, energy density is large, be widely used in the electronic apparatuss such as mobile communication, video camera, notebook computer, and progressively to electric bicycle, electric automobile, global position system and national defence field, expand, lithium ion battery is the high-energy battery of new generation most with development prospect and the market space.
Conventional square polymer battery is a kind of of lithium ion battery, positive and negative lug on it is in same one end of battery, there is the closedtop position of a battery simultaneously, there is the obviously shortcoming thinner than battery body in this position, this battery length direction is together in series and assembles is all generally just can complete by connection mode, but series-connected cell is more, need the line of connection more, operate very loaded down with trivial detailsly, do not utilize production, efficiency reduces greatly.
Summary of the invention
Present invention is directed at the deficiency of above-mentioned technology, a kind of method of square polymer battery length direction series connection is provided, the method does not need loaded down with trivial details line operation, it is easy and simple to handle when battery 2 is gone here and there and goes here and there more, fast, attractive in appearance, and by this kind of method, improved the energy density of unit volume battery.
The present invention is achieved like this, and a kind of method of square polymer battery length direction series connection, is characterized in that method step is as follows:
(1) in machine winding process, allow battery a lug upward, another lug is placed down, the volume core lug that makes like this to reel is out respectively in the both sides of volume core;
(2) machine rolls around time use flat volume core to reel, in the time of inserted sheet, pole piece is inserted into the end, Yu Juanzhen inside edge, lug edge is concordant, inserts anodally after negative pole coiling one deck, makes two lugs not placed in the middle, respectively in the both sides of the edge of volume core;
(3) rush shell and be designed to by there being 2 top margins, four limit structures of 2 sides, are used 2 films packaging technology altogether;
(4) volume core is put into the aluminum plastic film that has cut top margin, with simple and easy closedtop machine, carry out closedtop 2 times, then with side seal machine, carry out side seal;
(5) after single battery partial volume, first 2 side sealings are folded up, 2 closedtop positions of battery are also folded up simultaneously, then battery top and bottom are fixed with coffee-like high temperature gummed tape, battery dual-side bag high tempreture tape;
(6) when battery strings joint group fills, upset battery makes battery plus-negative plate end to end, and the positive pole of a upper battery (or negative pole) is connected with negative pole (or anodal) direct spot welding or the upper tin of next battery, does not need so loaded down with trivial details line operation.
(7) the final appearance of series-connected cell finished product is crossed blue fever plastic film.
Advantage of the present invention is: (1) is because battery pole ear is respectively on the two sides of battery body, an anode (or negative pole) is connected with next battery cathode (or anodal) direct spot welding or upper tin above, do not need loaded down with trivial details line operation, battery 2 strings and go here and there easy and simple to handle more, fast, attractive in appearance; (2) because two closedtop positions of battery have been folded up, so just there is not an obvious closedtop position thinner than battery body, improved the energy density of unit volume battery; (3) for the digital equipment that uses the series connection of square polymer, the final anodal utmost point of this series connection assemble method of use battery of device power supply (DPS) both positive and negative polarity heterodoxy does not need line, battery plus-negative plate can directly be welded in above the power positive cathode of digital equipment, human-saving and electric wire cost.
Accompanying drawing explanation
Fig. 1 is that two of the present invention goes out lug roll core structure of battery schematic diagram.
Fig. 2 two of the present invention goes out lug folding closedtop battery connecting construction schematic diagram.
In the drawings, 1 is lithium battery 2, positive pole 3, negative pole.
Embodiment
Below in conjunction with accompanying drawing explanation, embodiments of the invention are described in further detail, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof, all should list protection scope of the present invention in.
As shown in Figure 1 and Figure 2, the present invention comes work and enforcement like this, and a kind of method of square polymer battery length direction series connection, is characterized in that method step is as follows:
(1) in machine winding process, allow battery a lug upward, another lug is placed down, the volume core lug that makes like this to reel is out respectively in the both sides of volume core;
(2) machine rolls around time use flat volume core to reel, in the time of inserted sheet, pole piece is inserted into the end, Yu Juanzhen inside edge, lug edge is concordant, inserts anodally after negative pole coiling one deck, makes two lugs not placed in the middle, respectively in the both sides of the edge of volume core;
(3) rush shell and be designed to by there being 2 top margins, four limit structures of 2 sides, are used 2 films packaging technology altogether;
(4) volume core is put into the aluminum plastic film that has cut top margin, with simple and easy closedtop machine, carry out closedtop 2 times, then with side seal machine, carry out side seal;
(5) after single battery partial volume, first 2 side sealings are folded up, 2 closedtop positions of battery are also folded up simultaneously, then battery top and bottom are fixed with coffee-like high temperature gummed tape, battery dual-side bag high tempreture tape;
(6) when battery strings joint group fills, upset battery makes battery plus-negative plate end to end, and the positive pole of a upper battery (or negative pole) is connected with negative pole (or anodal) direct spot welding or the upper tin of next battery, does not need so loaded down with trivial details line operation;
(7) the final appearance of series-connected cell finished product is crossed blue fever plastic film.