CN206673036U

CN206673036U - Triangle overlapping lithium ion battery

Info

Publication number: CN206673036U
Application number: CN201720426285.4U
Authority: CN
Inventors: 任江; 邱杨; 康书文
Original assignee: Hubei Lion Amperex Technology Ltd
Current assignee: Hubei Lion Amperex Technology Ltd
Priority date: 2017-04-21
Filing date: 2017-04-21
Publication date: 2017-11-24
Anticipated expiration: 2027-04-21

Abstract

A kind of triangle overlapping lithium ion battery, manufactured for lithium ion battery.The housing of triangle encases battery core, and edge sealing is in smooth-shaped, and lug is packaged together with housing, battery core.The utility model is simple in construction, and composition matching is good, and battery high rate performance and energy conversion efficiency are high, with more preferable heat dispersion, it is high to assemble time space utilization rate, has filled up triangle or special-shaped finished product structure requirement, the needs for being adapted to electric bicycle to develop to light direction.

Description

Triangle overlapping lithium ion battery

Technical field

Technical field of lithium ion is the utility model is related to, specifically a kind of triangle overlapping lithium ion battery.

Background technology

It is main using lithium ion battery in recent years as increasingly reducing for petroleum resources is increasingly serious with environmental pollution The electric vehicle of power source engenders and increasing that the carbon emission of pure electric vehicle is zero, and has energy conversion efficiency The characteristics of high, this causes people that electric bicycle, battery-operated motor cycle, electric automobile are considered as into following substitute diesel locomotive one Important selection.

At present, the main selection of electric automobile power battery is lithium ion battery, and battery-operated motor cycle mainly selects to be with lead Based on sour battery, lead-acid battery environmental pollution is obvious to all, and energy density is low.Lithium ion battery is close with energy Spend the advantages that high, pollution-free so that electric bicycle, battery-operated motor cycle gradually make the transition to lithium ion battery.Due to electrical salf-walking Car develops to light direction, and the shape of the rule such as traditional column lithium ion, soft-package battery or rectangular cell is not easy to meet Abnormity assembling requires, causes low space utilization during assembling.

The content of the invention

For overcome the deficiencies in the prior art, goal of the invention of the present utility model be to provide a kind of triangle overlapping lithium from Sub- battery, to meet that abnormity assembling requires.

For achieving the above object, the housing of triangle of the present utility model encases battery core, and edge sealing is in smooth-shaped, Lug is packaged together with housing, battery core.

The edge sealing width is 2.5mm ~ 10mm.

It is respectively positive pole ear, the negative lug of battery on the right side of the top left of the edge sealing.

Three angles in edge sealing junction position is in 0.5mm ~ 2mm radius chamfers.

The cobalt acid lithium or LiMn2O4 or nickel cobalt that it is 90 ~ 98% by mass percent that the positive plate small pieces of the battery core, which are,

LiMn2O4 or LiFePO4,1.0 ~ 3% electrically conductive graphite, 1.0 ~ 3% conductive carbon black or CNT, 1.0 ~ 6% Kynoar PVDF, the 1-METHYLPYRROLIDONE that dry powder proportion is 50 ~ 100 are uniformly hybridly prepared into anode sizing agent, uniformly apply Apply on 12 ~ 20um thick aluminum foils, the triangle positive plate small pieces obtained through drying, roll-in, cross cutting.

Delanium that it is 91 ~ 96% by mass percent that the negative plate small pieces of the battery core, which are, 1 ~ 4% conductive carbon black, 3 ~ 5% Kynoar PVDF, the 1-METHYLPYRROLIDONE that dry powder proportion is 50 ~ 120 are uniformly hybridly prepared into cathode size, Triangle negative plate small pieces that are even to be coated on 8 ~ 12um thickness paper tinsel paper tinsels, being obtained through drying, roll-in, cross cutting.

It by triangle positive plate small pieces, triangle negative plate small pieces and porosity is 35 ~ 50% that the battery core, which is, thickness is The battery core that 16 ~ 25um polyalkene diaphragm is built up with W shapes.

The housing is the triangular housings that thickness is 88 ~ 180um, and battery core is encased and carries out lug encapsulation by housing；It is described Lithium ion battery injects after electrolyte, standing through being melted into, sealing, lithium-ion electric made of partial volume process afterwards to be vacuum dried Pond.

The utility model is compared with prior art, simple in construction, and composition matching is good, battery high rate performance and energy conversion Efficiency high, there is more preferable heat dispersion, assembling time space utilization rate is high, has filled up triangle or special-shaped finished product structure is used and wanted Ask, the needs for being adapted to electric bicycle to develop to light direction.

Brief description of the drawings

Fig. 1 is structure diagram of the present utility model.

Fig. 2 is Fig. 1 side view.

Fig. 3 is Fig. 1 top view.

Fig. 4 is Fig. 1 core strueture sketch.

Fig. 5 is the scatter diagram of lithium ion battery multiplying power discharging of the present utility model.

Embodiment

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, housing 1 of the present utility model is that thickness is outside 88 ~ 180um triangle Battery core 4 is encased progress lug 2 and encapsulated by shell, housing 1, and edge sealing 3 is in smooth-shaped, and the width of edge sealing 3 is 2.5mm ~ 10mm, envelope It is respectively positive pole ear, the negative lug of battery on the right side of the top left on side 3, three angles in the junction position 5 of edge sealing 3 is in 0.5mm ~ 2mm Radius chamfer.The cobalt acid lithium or LiMn2O4 or nickel cobalt manganese that it is 90 ~ 98% by mass percent that the positive plate small pieces 6 of the battery core 4, which are, Sour lithium or LiFePO4,1.0 ~ 3% electrically conductive graphite, 1.0 ~ 3% conductive carbon black or CNT, 1.0 ~ 6% Kynoar PVDF, the 1-METHYLPYRROLIDONE that dry powder proportion is 50 ~ 100 are uniformly hybridly prepared into anode sizing agent, and even application is in 12 ~ 20um On thick aluminum foil, the triangle positive plate small pieces 6 that are obtained through drying, roll-in, cross cutting；The negative plate small pieces 7 of the battery core 4 are by matter Delanium that amount percentage is 91 ~ 96%, 1 ~ 4% conductive carbon black, 3 ~ 5% Kynoar PVDF, dry powder proportion be 50 ~ 120 1-METHYLPYRROLIDONE is uniformly hybridly prepared into cathode size, and even application is on 8 ~ 12um thickness paper tinsel paper tinsels, through drying, roller The triangle negative plate small pieces 7 that pressure, cross cutting obtain；Battery core 4 is by triangle positive plate small pieces 6, triangle negative plate small pieces 7 and hole Gap rate is built up by the polyalkene diaphragm 8 that 35 ~ 50%, thickness is 16 ~ 25um with W shapes；Battery core 4 is encased into progress by shell 1 completely Lug encapsulates, it is vacuum dried after injection electrolyte, after standing through being melted into, sealing, the process such as partial volume, that is, obtain lithium-ion electric Pond.

Inside battery of the present utility model uses W shape structure laminations, ensures the bag positive plate small pieces 6 of negative plate small pieces 7, polyene The principle of the bag positive plate small pieces 6 of hydrocarbon barrier film 8, the security of battery are more preferable；Produced heat is from battery during other battery discharge Middle part to surrounding transmission, and when multiplying power discharging internal temperature of battery is more than 75 DEG C, electrolyte decomposition produces gas, battery gas Drum；Outside batteries use triangular structure, and its radiating effect is optimal, and high rate performance is obviously improved.

Claims

A kind of 1. triangle overlapping lithium ion battery, it is characterised in that：The housing of triangle（1）By battery core（4）Encase, edge sealing （3）In smooth-shaped, lug（2）With housing（1）, battery core（4）It is packaged together.
2. the triangle overlapping lithium ion battery according to claim 1, it is characterised in that：The edge sealing（3）Width is 2.5mm~10mm。
3. the triangle overlapping lithium ion battery according to claim 1, it is characterised in that：The edge sealing（3）

Top left on the right side of be respectively the positive pole ear of battery, negative lug.
4. the triangle overlapping lithium ion battery according to claim 1, it is characterised in that：The edge sealing（3）

Three angles in junction position（5）In 0.5mm ~ 2mm radius chamfers.
5. the triangle overlapping lithium ion battery according to claim 1, it is characterised in that：The battery core（4）

Positive plate small pieces be 90 ~ 98% by mass percent cobalt acid lithium or LiMn2O4 or nickle cobalt lithium manganate or LiFePO4, 1.0 ~ 3% electrically conductive graphite, 1.0 ~ 3% conductive carbon black or CNT, 1.0 ~ 6% Kynoar PVDF, dry powder proportion are 50 ~ 100 1-METHYLPYRROLIDONE is uniformly hybridly prepared into anode sizing agent, and even application is on 12 ~ 20um thick aluminum foils, through dry The triangle positive plate small pieces that dry, roll-in, cross cutting obtain（6）.
6. the triangle overlapping lithium ion battery according to claim 1, it is characterised in that：The battery core（4）

Negative plate small pieces be 91 ~ 96% by mass percent Delanium, 1 ~ 4% conductive carbon black, 3 ~ 5% poly- inclined fluorine Ethene PVDF, the 1-METHYLPYRROLIDONE that dry powder proportion is 50 ~ 120 are uniformly hybridly prepared into cathode size, even application 8 ~ On 12um thickness paper tinsel paper tinsels, the triangle negative plate small pieces that are obtained through drying, roll-in, cross cutting（7）.
7. the triangle overlapping lithium ion battery according to claim 1, it is characterised in that：The battery core（4）For by three Angular positive plate small pieces（6）, triangle negative plate small pieces（7）With porosity be polyolefin that 35 ~ 50%, thickness is 16 ~ 25um every Film（8）The battery core built up with W shapes（4）.
8. the triangle overlapping lithium ion battery according to claim 1, it is characterised in that：The housing（1）For thickness For 88 ~ 180um triangular housings, housing（1）By battery core（4）Encase carry out lug（2）Encapsulation；The lithium ion battery is warp Injected after vacuum drying after electrolyte, standing through being melted into, sealing, lithium ion battery made of partial volume process.