A kind of series connection method of electric core
Technical field
The present invention relates to a kind of series connection method, relate in particular to a kind of series connection method of electric core.
Background technology
Lithium ion battery (Li-ion Batteries) is the lithium battery development.The button cell of using in the camera just belongs to lithium battery.The positive electrode of lithium battery is manganese dioxide or thionyl chloride, and negative pole is a lithium.Battery promptly had voltage after the battery assembling was accomplished, and need not charge. and this battery also can charge, but cycle performance is bad, in the charge and discharge cycles process, forms Li dendrite easily, causes internal short-circuit of battery, so this generally speaking battery is forbidden charging.Afterwards, it was negative pole that sony corporation of japan has been invented with the raw material of wood-charcoal material, made anodal lithium battery with the compound that contains lithium, in charge and discharge process, did not have lithium metal to exist, and had only lithium ion, Here it is lithium ion battery.When battery is charged, there is lithium ion to generate on the positive pole of battery, the lithium ion of generation arrives negative pole through electrolyte movement.And be layer structure as the carbon of negative pole, and it has a lot of micropores, and the lithium ion that reaches negative pole just is embedded in the micropore of carbon-coating, and the lithium ion of embedding is many more, and charging capacity is high more.Equally, when battery is discharged (we use the process of battery), the lithium ion that is embedded in the negative pole carbon-coating is deviate from, and it is anodal to move back again.
Lithium ion battery generally is made up of electric core and metallic plate, and in order to dwindle the volume of entire cell, industry can be together in series electric core usually, and in the prior art, the electric core that people normally will connect directly welds together.Only, this kind series connection method makes that the structural strength of battery is lower, thereby influences the useful life of battery.
Therefore, be necessary to provide a kind of electric core series connection method that overcomes above-mentioned defective.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and can prolong the battery electric core series connection method in useful life.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of series connection method of electric core; This series connection method comprises: A) a peek electric core group, several metallic plates and a pair of lug; Said electric core group comprises the first electric core group, the second electric core group, the 3rd electric core group and the 4th electric core group; Said metallic plate comprises first metallic plate, second metallic plate, the 3rd metallic plate, the 4th metallic plate and the 5th metallic plate, the connecting portion that said second, third metallic plate is equipped with body and is connected with body; B) earlier the positive pole of the first electric core group and the negative pole of the second electric core group are welded in first metallic plate, then the negative pole of the first electric core group are welded in the body of second metallic plate, again the positive pole of the second electric core group is welded in the body of the 3rd metallic plate; C) positive pole of the 3rd electric core group is welded in the connecting portion of second metallic plate; The negative pole of the 3rd electric core group is welded in the 4th metallic plate; Again the negative pole of the 4th electric core group is welded in the connecting portion of the 3rd metallic plate, the positive pole of the 4th electric core group is welded in the 5th metallic plate; D) connecting portion of second, third metallic plate of bending, wherein a lug is installed on the 4th metallic plate at last, and another lug is installed on the 5th metallic plate.
The invention has the beneficial effects as follows: through producing, can make the electric core group after the series connection have higher intensity with above-mentioned electric core series connection method, thus the useful life of prolongation battery.
Description of drawings
Fig. 1 is the sketch map of the present invention's electricity core group and metallic plate.
Fig. 2 is the sketch map after metallic plate of the present invention and the electric core bond pads.
Fig. 3 is the sketch map in the bending process of the present invention.
Fig. 4 is the sketch map after the bending of the present invention.
Among Fig. 1 to Fig. 4: 1, the first electric core group, 2, the second electric core group, the 3, the 3rd electric core group; 4, the 4th electric core group, 5, first metallic plate, 6, second metallic plate; 60,70, body, 61,71, connecting portion, the 7, the 3rd metallic plate; 8, the 4th metallic plate, the 9, the 5th metallic plate, 10,11, lug.
Embodiment
A kind of series connection method of electric core, this series connection method comprises:
A) see also Fig. 1; A peek electric core group, several metallic plates are (in this execution mode; Said metallic plate is a copper nickel sheet) and a pair of lug; Said electric core group comprises first electric core group 1, second electric core group the 2, the 3rd electric core group 3 and the 4th electric core group 4, and said metallic plate comprises first metallic plate 5, second metallic plate 6, the 3rd metallic plate 7, the 4th metallic plate 8 and the 5th metallic plate 9, the connecting portion 61,71 that said second, third metallic plate is equipped with body 60,70 and is connected with body;
B) elder generation is welded in the negative pole anodal and the second electric core group of the first electric core group 1 the same side of first metallic plate 5; Then the negative pole of the first electric core group 1 is welded in the body 60 of second metallic plate 6, again the positive pole of the second electric core group 2 is welded in the body 70 of the 3rd metallic plate 7;
C) please continue to consult Fig. 2; The positive pole of the 3rd electric core group 3 is welded in the connecting portion 61 of second metallic plate 6; The negative pole of the 3rd electric core group 3 is welded in the 4th metallic plate 8; Again the negative pole of the 4th electric core group 4 is welded in the connecting portion 71 of the 3rd metallic plate 7, the positive pole of the 4th electric core group 4 is welded in the 5th metallic plate 9;
D) please continue to consult Fig. 3 and Fig. 4; The connecting portion 61 of bending second metallic plate 6 is so that body 60 overlaids of the connecting portion 61 of second metallic plate 6 and second metallic plate 6, and the connecting portion 71 of bending the 3rd metallic plate 7 is so that body 70 overlaids of the connecting portion 71 of the 3rd metallic plate 7 and the 3rd metallic plate 7; Wherein a lug 10 is installed on the 4th metallic plate 8 at last, and another lug 11 is installed on the 5th metallic plate 9.
The present invention is through producing with above-mentioned electric core series connection method, can make the electric core group after the series connection have higher intensity, thus the useful life of prolongation battery.