CN205016623U

CN205016623U - Polymer lithium ion battery

Info

Publication number: CN205016623U
Application number: CN201520714835.3U
Authority: CN
Inventors: 韩晓辉; 黄波; 刘志远; 赵其博
Original assignee: Springpower Technology Shenzhen Co Ltd
Current assignee: Springpower Technology Shenzhen Co Ltd
Priority date: 2015-09-15
Filing date: 2015-09-15
Publication date: 2016-02-03
Anticipated expiration: 2025-09-15

Abstract

The utility model discloses a polymer lithium ion battery, it includes first casing, second casing, electric core and output unit, first casing is circular, and it has the accommodation space and be configured as and hold electric core, the second casing with first casing looks lock will the accommodation space seals, the electricity core includes and separates each other, the anodal pole piece and the negative pole pole piece of range upon range of setting, be equipped with the rubber coating diaphragm between anodal pole piece and the negative pole pole piece, anodal pole piece has anodal utmost point ear, the negative pole pole piece have with anodal utmost point ear dislocation set's negative pole utmost point ear, anodal utmost point ear and negative pole utmost point ear all are connected with output unit through drawing forth the piece, output unit is used for being connected electric core with external equipment. The utility model discloses the polymer lithium ion battery shell adopts circular design, and inside electric core can utilize the inside space of battery case through reasonable layout the maximize, has both satisfied the requirement of battery miniaturation, has also satisfied the requirement of equipment to battery capacity.

Description

A kind of polymer Li-ion battery

Technical field

The utility model relates to cell art, particularly relates to a kind of polymer Li-ion battery.

Background technology

Wearable intelligent equipment is that application wearable technology carries out intelligentized design to daily wearing, develops the general name of the equipment that can dress, as glasses, gloves, wrist-watch and dress ornament etc., the development trend of Wearable is miniaturized and lightweight, so just need the light and battery that can make full use of the confined space to the electric power providing equipment to run, in prior art, chargeable lithium cell becomes the first-selection of wearable intelligent equipment.Current chargeable lithium cell mainly contains two kinds: one is liquid lithium ionic cell, this consideration being in fail safe to battery, its aluminium matter or steel casing thicker, the Large Copacity of battery and small size are difficult to take into account simultaneously, can not adapt to the designing requirement of microminiaturized battery, and the die sinking expense of shell is also higher; Another kind is polymer Li-ion battery, and this battery is generally square or cylindric, and this shape is difficult to apply in Intelligent worn device, is namely difficult to meet volume, the dimensional requirement of wearable device to battery.

Utility model content

Technical problem to be solved in the utility model, is to provide that one is applicable to wearable device, volume is little and have relatively jumbo polymer Li-ion battery.

The utility model solves the problems of the technologies described above adopted technical scheme:

The utility model provides a kind of polymer Li-ion battery, and it comprises the first housing, the second housing, battery core and output unit; Described first housing is circular, and it has accommodation space and is configured to hold battery core, and described second housing and described first housing interlock to merge and closed by described accommodation space; Described battery core comprises anode pole piece and the cathode pole piece of spaced, stacked setting, gluing barrier film is provided with between described anode pole piece and cathode pole piece, described anode pole piece has positive pole ear, described cathode pole piece has the negative lug shifted to install with described positive pole ear, and described positive pole ear is all connected with output unit by lead-out tablet with negative lug; Described output unit is used for battery core to be connected with external equipment.

As the further improvement of technique scheme, described anode pole piece and cathode pole piece are all that circle lacks shape.

As the further improvement of technique scheme, described first housing is provided with outer in the form of a ring, and described output unit is placed on described outer.

As the further improvement of technique scheme, described lead-out tablet is connected by bonded adhesives and described outer.

As the further improvement of technique scheme, described output unit comprises wiring board and is placed in the connector on described wiring board.

As the further improvement of technique scheme, described first housing is provided with one for dodging the relief portion of described output unit.

As the further improvement of technique scheme, the material of described first housing and the second housing is all aluminum plastic film.

The beneficial effects of the utility model are:

The utility model polymer Li-ion battery shell adopts circular design, and inner battery core ECDC removing the work office, can utilize the space of battery case inside substantially, both meet the requirement of battery microminiaturization, also meet the requirement of equipment to battery capacity.

Accompanying drawing explanation

Fig. 1 is the overall structure schematic diagram of the utility model polymer Li-ion battery (not drawing output unit);

Fig. 2 is the battery core of the utility model polymer Li-ion battery and the assembly structure schematic diagram of the first housing;

Fig. 3 is the detonation configuration schematic diagram of the utility model polymer Li-ion battery (not drawing output unit);

Fig. 4 is the cutaway view of the utility model polymer Li-ion battery and the partial enlarged drawing at I place;

Fig. 5 is the overall structure schematic diagram of the utility model polymer Li-ion battery (comprising output unit);

Fig. 6 is the detonation configuration schematic diagram of the utility model polymer Li-ion battery (comprising output unit).

Embodiment

Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.Obviously; described embodiment is a part of embodiment of the present utility model, instead of whole embodiment, based on embodiment of the present utility model; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of the utility model protection.In addition, all connection/annexations related in patent, not singly refer to that component directly connects, and refer to and according to concrete performance, can connect auxiliary by adding or reducing, and form more excellent draw bail.Each technical characteristic in the utility model, can combination of interactions under the prerequisite of not conflicting conflict.

Please with reference to Fig. 1 to Fig. 6, the utility model polymer Li-ion battery comprises the first housing 10, second housing 20, battery core 30 and output unit 40.

First housing 10 is circular, and it has accommodation space 11 and is configured to hold battery core 30, and described second housing 20 interlocks to merge with described first housing 10 and closed by described accommodation space 11; Described first housing 10 is provided with outer 12 in the form of a ring, and described output unit 40 is placed on described outer 12, and described first housing 10 is provided with one for dodging the relief portion 13 of described output unit 40.Preferably, the material of described first housing 10 and the second housing 20 is all aluminum plastic film.

Battery core 30 comprises anode pole piece 31 and the cathode pole piece 32 of spaced, stacked setting, gluing barrier film 33 is provided with between described anode pole piece 31 and cathode pole piece 32, described anode pole piece 31 has positive pole ear 31a, described cathode pole piece 32 has the negative lug 32b shifted to install with described positive pole ear 31a, and described positive pole ear 31a is connected with output unit 40 by lead-out tablet 34 with negative lug 32b; Described lead-out tablet 34 is connected by bonded adhesives 35 and described outer 12.Preferably, described anode pole piece 31 and cathode pole piece 32 are all that circle lacks shape.

In the present embodiment, the slurry coating operation of anode pole piece 31 is: by positive active material (94.6%) and conductive black (2.2%) and PDVF(3.2%), NMP ratio mixes makes the anode sizing agent that solid content is 45%, again this anode sizing agent is coated on the aluminium foil of 16 μm, then through oven for drying, surface density controls to 200g/m2, finally use 150t pressure pair roller, go out into circle through circular knives and lack shape anode pole piece 31, manufacturing procedure and anode pole piece 31 manufacturing procedure of cathode pole piece 32 are similar, just slurry is different, it should be noted that, slurry is not applied at positive pole ear 31a and negative lug 32a place.

Gluing barrier film 33 can adopt polyethylene (PE), polypropylene (PP) is main TPO barrier film, by customization stamping-out tool, be washed into required shape, in the present embodiment, the area ratio anode pole piece 31 of gluing barrier film 33 and the area of cathode pole piece 32 all want large, to be separated completely by both positive and negative polarity pole piece, certainly, the shape of gluing barrier film 33 is also preferably the scarce shape of circle.

Please refer to Fig. 2, anode pole piece 31 and the gluing barrier film 33 of the present embodiment shown in accompanying drawing are in the state of combination, and that is gluing barrier film 33 is coated on the both sides of anode pole piece 31.But in various embodiments, gluing barrier film 33 is coated on the both sides of cathode pole piece 32, or all to apply in the side of anode pole piece 31 and cathode pole piece 32 be all the alternative being easy to expect.

Two lead-out tablets 34 by the mode of welding and positive pole ear 31a and negative lug 32a affixed, after battery core 30 has welded lead-out tablet 34, just be positioned in the accommodation space 11 of described first housing 10, again the bonded adhesives 35 on lead-out tablet 34 is adhesively fixed with the outer of described first housing 10, through carrying out fluid injection to polymer lithium ion battery cell again, change into, shaping, two envelopes, cutting edge and partial volume, namely complete the installation of polymer lithium ion battery electric core.

Output unit 40 is for being connected battery core 30 with external equipment, and described output unit 40 comprises the wiring board 41 be connected with described outer 12, the connector 42 be placed on described wiring board 41.In the present embodiment, wiring board is preferably flexible circuit board, is also coated with insulating tape 43 at outer 12 place of described first housing 10.

The utility model polymer Li-ion battery can be used as the supplying cell of the wearable device such as Intelligent bracelet, intelligent watch; Also can be used in the occasion that circular lamp receptacle, round handle etc. need circular rechargeable battery simultaneously.

More than that better enforcement of the present utility model is illustrated, but the utility model is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.

Claims

1. a polymer Li-ion battery, is characterized in that: comprise the first housing, the second housing, battery core and output unit; Described first housing is circular, and it has accommodation space and is configured to hold battery core, and described second housing and described first housing interlock to merge and closed by described accommodation space; Described battery core comprises anode pole piece and the cathode pole piece of spaced, stacked setting, gluing barrier film is provided with between described anode pole piece and cathode pole piece, described anode pole piece has positive pole ear, described cathode pole piece has the negative lug shifted to install with described positive pole ear, and described positive pole ear is all connected with output unit by lead-out tablet with negative lug; Described output unit is used for battery core to be connected with external equipment.

2. polymer Li-ion battery as claimed in claim 1, is characterized in that: described anode pole piece and cathode pole piece are all that circle lacks shape.

3. polymer Li-ion battery as claimed in claim 1, is characterized in that: described first housing is provided with outer in the form of a ring, and described output unit is placed on described outer.

4. polymer Li-ion battery as claimed in claim 3, is characterized in that: described lead-out tablet is connected by bonded adhesives and described outer.

5. the polymer Li-ion battery as described in any one of Claims 1-4, is characterized in that: described output unit comprises wiring board and is placed in the connector on described wiring board.

6. the polymer Li-ion battery as described in any one of Claims 1-4, is characterized in that: described first housing is provided with one for dodging the relief portion of described output unit.

7. the polymer Li-ion battery as described in any one of Claims 1-4, is characterized in that: the material of described first housing and the second housing is all aluminum plastic film.