阅读说明：本技术 一种锂电芯的密封结构及其密封方法 (A kind of sealing structure and its encapsulating method of lithium cell ) 是由 田勇光 李一平 于 2019-08-07 设计创作，主要内容包括：本发明公开了一种锂电芯的密封结构,包括电芯壳和电芯密封盖,所述所述电芯壳的顶部设置有电芯密封盖。与现有技术相比,通过设置电芯密封盖、第一连接板、第二连接板、插槽、第一安装槽、第一弹簧、密封板、密封槽、通槽、固定槽、活动槽、第二弹簧和密封块之间的联动关系,使得在进行密封卷芯不会造成保护膜损坏,而且防止锂电芯的包装膜因腐蚀破坏造成电芯漏液的情况出现,提高了锂电芯的安全性能,而且通过第一连接板、第一弹簧、第一安装槽、密封板、密封槽、第二连接板、密封块和第二弹簧使得将电芯密封盖进行密封,使得电芯密封盖与电芯壳密封固定,且操作简单方便,便于使用。(The invention discloses a kind of sealing structure of lithium cell, including electric core shell and battery core sealing cover, battery core sealing cover is provided at the top of the electric core shell.Compared with prior art, by the way that battery core sealing cover is arranged, first connecting plate, second connecting plate, slot, first mounting groove, first spring, sealing plate, seal groove, through slot, fixing groove, loose slot, interaction relation between second spring and sealing block, so that will cause protective film damage being sealed core not, and prevent the packaging film of lithium cell because of appearance the case where battery core leakage caused by corrosion failure, improve the security performance of lithium cell, and pass through the first connecting plate, first spring, first mounting groove, sealing plate, seal groove, second connecting plate, sealing block and second spring for battery core sealing cover to be sealed, so that battery core sealing cover and electric core shell sealing are fixed, and it is simple to operate, it is easy to use.)

1. a kind of sealing structure of lithium cell, including electric core shell (1) and battery core sealing cover (2), it is characterised in that: the electricity It is provided at the top of core shell (1) battery core sealing cover (2), the both ends of the battery core sealing cover (2) have been respectively fixedly connected with the first company Fishplate bar (3) and the second connecting plate (4), the electric core shell (1) are internally provided with core (5), the electric core shell (1) and are located at the One end of one connecting plate (3) offers slot used in conjunction with (6), and first connecting plate (3) is through slot (6) and prolongs It extends to inside it, is symmetrically offered the first mounting groove (7) on the inner wall of the slot (6), the inside of first mounting groove (7) It is fixedly connected with the first spring (8), the other end of first spring (8) is fixedly connected with sealing plate (9), the sealing plate (9) run through the first mounting groove (7) and extend to the inside of the seal groove (10) opened up on the first connecting plate (3), the electric core shell (1) and positioned at the one end of the second connecting plate (4) through slot (11) being used cooperatively with the second connecting plate (4), the battery core are offered It is offered on the side of shell (1) sealing end (12), second connecting plate (4) is through through slot (11) and extends to fixing groove (13) Inside, on the surface of second connecting plate (4) and the positional symmetry of I and sealing end (12) offers loose slot (14), institute The inside for stating loose slot (14) is fixedly connected with second spring (15), and the other end of the second spring (15) is fixedly connected with close It seals block (16), the sealing block (16) runs through loose slot (14) and extends to its outside to be used cooperatively with groove, and the battery core is close Sealing ring (17) are provided on the internal surface of capping (2) and at the top of electric core shell (1).

2. a kind of sealing structure of lithium cell according to claim 1, it is characterised in that: the inside of the fixing groove (13) Rolling is connected with sealing ball (18), and the arc seal groove cooperation opened up in sealing ball (18) and the second connecting plate (4) makes With.

3. a kind of sealing structure of lithium cell according to claim 1, it is characterised in that: first connecting plate (3) with The top of second connecting plate (4) and it is located at the top of slot (6) and through slot (11) and is fixedly connected to sealing strip (19).

4. a kind of sealing structure of lithium cell according to claim 1, it is characterised in that: first mounting groove (7) inside is fixedly connected with limit slide bar, and limits the limit sliding chutes opened up on slide bar and sealing plate (9) and be used cooperatively.

5. a kind of encapsulating method of the sealing structure of lithium cell according to claim 1, which is characterized in that specifically include with Lower step: core is placed on inside electric core shell and is fitted closely with its inner wall, then covers battery core sealing cover, and battery core seals It fits closely on the inside of sealing ring and electric core shell inside lid, and is arrived by the way that the first connecting plate is inserted people with the second connecting plate respectively The inside of slot and through slot, insertion while, the first connecting plate squeezes sealing plate, when the first connecting plate be moved to it is slotting When inside slot, sealing plate is fastened under the elastic force effect of the first spring with the seal groove on the first connecting plate, and when the first connection When plate is moved on the bottom surface of slot, the bottom end of the second connecting plate is inserted into the inside of fixing groove, and when sealing block 16 is moved to When sealing end, by sealing block pop-up loose slot to seal sealing end under the action of second spring, and in sealing ball Further sealing end is sealed under effect, so that lithium cell sealing be finished.

6. a kind of encapsulating method of the sealing structure of lithium cell according to claim 5, it is characterised in that: the sealing block (16) and far from loose slot (14) external side insulating layer and internal mold layer is respectively set, and close to (5) one side sealing block of core (16) it is set as theca interna on side, is provided with insulating layer on the side of another sealing block (16) separate loose slot (14).

Technical field

The present invention relates to lithium cell technology neighborhoods, and in particular to a kind of sealing structure of lithium cell.Meanwhile the present invention also relates to And a kind of encapsulating method of the sealing structure of lithium cell.

Background technique

Lithium battery is because it has a safety feature, thickness is thin, flexible design, the favor at low cost by users at home and abroad, lithium electricity Pond feature is the upper unique advantage of shape packaging of the basic chemical property and poly-lithium battery of integrated liquid lithium battery, And the medium transmitted between positive and negative anodes using liquid electrolyte similar with liquid lithium battery as lithium ion, package reliability For one of the index of lithium battery excellent performance, in some lithium cell production technologies, heat-seal technique is mostly used to realize that battery core is close greatly It seals, in encapsulation or subsequent seaming operation, packaging film disrepair phenomenon often occurs, so that packaging film is directly contacted with electrolyte Ion transmission channel is formed, packaging erosion is caused, influences the normal use of battery core, so needing to design a kind of lithium cell Sealing structure and its encapsulating method solve the problems, such as this.

Summary of the invention

The purpose of the present invention is to provide a kind of sealing structure of lithium cell and its encapsulating methods, to solve above-mentioned background skill The problem of being proposed in art.

To achieve the above object, the invention provides the following technical scheme: a kind of sealing structure of lithium cell, including electric core shell With battery core sealing cover, battery core sealing cover is provided at the top of the electric core shell, the both ends of the battery core sealing cover are solid respectively Surely the first connecting plate and the second connecting plate are connected with, the electric core shell is internally provided with core, the electric core shell and is located at the One end of one connecting plate offers slot used in conjunction with, and first connecting plate is through slot and extends to inside it, The first mounting groove is symmetrically offered on the inner wall of the slot, the inside of first mounting groove is fixedly connected with the first spring, The other end of first spring is fixedly connected with sealing plate, and the sealing plate is through the first mounting groove and extends to the first connection The inside of the seal groove opened up on plate, the electric core shell and the one end for being located at the second connecting plate are offered to be cooperated with the second connecting plate The through slot used offers sealing end on the side of the electric core shell, and second connecting plate is through through slot and extends to fixation The inside of slot, on the surface of second connecting plate and the positional symmetry of I and sealing end offers loose slot, the loose slot Inside be fixedly connected with second spring, the other end of the second spring is fixedly connected with sealing block, and the sealing block runs through Loose slot and extend to its it is external be used cooperatively with groove, on the surface inside the battery core sealing cover and positioned at electric core shell Top is provided with sealing ring.

Preferably, the roll inside of the fixing groove is connected with sealing ball, and seals and open on ball and the second connecting plate If arc seal groove be used cooperatively.

Preferably, the top of first connecting plate and the second connecting plate and it is located at the top of slot and through slot and fixed connects It is connected to sealing strip.

Preferably, the inside of first mounting groove is fixedly connected with limit slide bar, and limits slide bar and sealing plate On the limit sliding chutes that open up be used cooperatively.

The present invention provides a kind of encapsulating methods of the sealing structure of lithium cell, specifically includes the following steps: core is put It sets inside electric core shell and is fitted closely with its inner wall, then cover battery core sealing cover, and the sealing ring inside battery core sealing cover It is fitted closely on the inside of electric core shell, and by inserting in people to slot and through slot the first connecting plate and the second connecting plate respectively Portion, while insertion, the first connecting plate squeezes sealing plate, when the first connecting plate is moved to inside slot, sealing Plate fastens under the elastic force effect of the first spring with the seal groove on the first connecting plate, and when the first connecting plate is moved to slot When on bottom surface, the bottom end of the second connecting plate is inserted into the inside of fixing groove, and when sealing block 16 is moved to sealing end, second By sealing block pop-up loose slot to seal sealing end under the action of spring, and further to envelope under the action of sealing ball Mouth end sealing, so that lithium cell sealing be finished.

Preferably, the sealing block and insulating layer and internal mold layer is respectively set far from the side outside loose slot, and close It is set as theca interna on the side of one side sealing block of core, another sealing block is far from being provided with insulation on the side of loose slot Layer.

The sealing structure and its application method of a kind of lithium cell provided by the invention pass through setting compared with prior art Battery core sealing cover, the first connecting plate, the second connecting plate, slot, the first mounting groove, the first spring, sealing plate, seal groove, through slot, Interaction relation between fixing groove, loose slot, second spring and sealing block, so that not will cause protective film being sealed core Damage, and prevent the packaging film of lithium cell because of appearance the case where battery core leakage caused by corrosion failure, improve the peace of lithium cell Full performance, and pass through the first connecting plate, the first spring, the first mounting groove, sealing plate, seal groove, the second connecting plate, sealing block For battery core sealing cover to be sealed with second spring, so that battery core sealing cover and electric core shell sealing are fixed, and easy to operate It is convenient, it is easy to use.

Detailed description of the invention

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is the enlarged diagram of structure at A in Fig. 1 of the present invention；

Fig. 3 is the enlarged diagram of structure at B in Fig. 1 of the present invention.

In figure: 1, electric core shell；2, battery core sealing cover；3, the first connecting plate；4, the second connecting plate；5, core；6, slot；7, First mounting groove；8, the first spring；9, sealing plate；10, seal groove；11, through slot；12, sealing end；13, fixing groove；14, movable Slot；15, second spring；16, sealing block；17, sealing ring；18, ball is sealed；19, sealing strip.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

The present invention provides a kind of a kind of sealing structures of lithium cell as shown in Figs. 1-3, including electric core shell 1 and battery core sealing Lid 2, the top of the electric core shell 1 are provided with battery core sealing cover 2, and the both ends of the battery core sealing cover 2 are respectively fixedly connected with There are the first connecting plate 3 and the second connecting plate 4, the electric core shell 1 is internally provided with core 5, the electric core shell 1 and is located at first One end of connecting plate 3 offers slot 6 used in conjunction with, and first connecting plate 3 is through slot 6 and extends in it Portion symmetrically offers the first mounting groove 7 on the inner wall of the slot 6, and the inside of first mounting groove 7 is fixedly connected with first Spring 8, the other end of first spring 8 are fixedly connected with sealing plate 9, and the sealing plate 9 is through the first mounting groove 7 and extends The inside of the seal groove 10 opened up on to the first connecting plate 3, the electric core shell 1 and the one end for being located at the second connecting plate 4 offer The through slot 11 being used cooperatively with the second connecting plate 4 offers sealing end 12, second connection on the side of the electric core shell 1 Plate 4 runs through through slot 11 and extends to the inside of fixing groove 13, on the surface of the second connecting plate 4 and position of I and sealing end 12 It sets and symmetrically offers loose slot 14, the inside of the loose slot 14 is fixedly connected with second spring 15, the second spring 15 The other end is fixedly connected with sealing block 16, and the sealing block 16 runs through loose slot 14 and extends to its external and groove cooperation and makes With, on the surface inside the battery core sealing cover 2 and be located at electric core shell 1 top be provided with sealing ring 17.

Specifically, the roll inside of the fixing groove 13 is connected with sealing ball 18, and seals ball 18 and connect with second The arc seal groove opened up on plate 4 is used cooperatively, and is cooperated by setting sealing ball 18 and the second connecting plate 4, further to it It is sealed and fixes.

Specifically, the top of first connecting plate 3 and the second connecting plate 4 and be located at slot 6 and through slot 11 top it is equal It is fixedly connected with sealing strip 19.

Specifically, the inside of first mounting groove 7 is fixedly connected with limit slide bar, and limit slide bar and sealing plate The limit sliding chutes opened up on 9 are used cooperatively, and it is taper that sealing plate 9, which is located at one end inside seal groove 10, and conveniently to battery core Sealing cover 2 is dismounted.

The present invention provides a kind of encapsulating methods of the sealing structure of lithium cell, specifically includes the following steps: core is put It sets inside electric core shell and is fitted closely with its inner wall, then cover battery core sealing cover, and the sealing ring inside battery core sealing cover It is fitted closely on the inside of electric core shell, and by inserting in people to slot and through slot the first connecting plate and the second connecting plate respectively Portion, while insertion, the first connecting plate squeezes sealing plate, when the first connecting plate is moved to inside slot, sealing Plate fastens under the elastic force effect of the first spring with the seal groove on the first connecting plate, and when the first connecting plate is moved to slot When on bottom surface, the bottom end of the second connecting plate is inserted into the inside of fixing groove, and when sealing block 16 is moved to sealing end, second By sealing block pop-up loose slot to seal sealing end under the action of spring, and further to envelope under the action of sealing ball Mouth end sealing, so that lithium cell sealing be finished.

Specifically, insulating layer and internal mold layer is respectively set in the side outside the sealing block 16 and separate loose slot 14, and It is set as theca interna on the side of 5 one side sealing block 16 of core, on another side of sealing block 16 far from loose slot 14 It is provided with insulating layer, packaging film is mainly isolated from the outside by insulating layer, avoids the occurrence of because of lithium cell and other unnecessary conductions Body contacts and leads to the case where being powered inside lithium cell, and packaging theca interna is typically chosen in polypropylene (PP) layer, so that packaging aluminium Layer cannot directly contact with electrolyte and form ion channel.

In conclusion compared with prior art, the invention has the advantages that compared with prior art, it is close by setting battery core It covers the 2, first connecting plate 3, the second connecting plate 4, slot 6, the first mounting groove 7, the first spring 8, sealing plate 9, seal groove 10, lead to Interaction relation between slot 11, fixing groove 13, loose slot 14, second spring 15 and sealing block 16, so that being sealed core 5 It not will cause protective film damage, and prevent the packaging film of lithium cell because of appearance the case where battery core leakage caused by corrosion failure, mention The high security performance of lithium cell, and pass through the first connecting plate 3, the first spring 8, the first mounting groove 7, sealing plate 9, seal groove 10, the second connecting plate 4, sealing block 16 and second spring 15 for battery core sealing cover 2 to be sealed, so that battery core sealing cover 2 It seals and fixes with electric core shell 1, and is simple to operate, be easy to use.

Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features, All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.