The Production Process of Laminated Lithium-ion Polymer Batteries

The Production Process of Laminated Lithium-ion Polymer Batteries

Laminated lithium-ion polymer batteries, often referred to as LiPo batteries, have carved a niche for themselves in the world of modern electronics due to their thin profile, lightweight, and excellent capacity to hold power. These batteries are particularly favored in applications where form factor and weight are critical, such as in smartphones, tablets, and drones. Understanding the complex production process of these batteries can shed light on their advanced capabilities and the reasons behind their widespread use. Here’s a detailed look at how laminated lithium-ion polymer batteries are manufactured.

1. Mixing of Electrode Materials

The production process begins with the preparation of electrode materials. The cathode is typically made from a lithium metal oxide, while the anode consists of graphite. Each material is mixed with a binder and solvent to create a slurry. This slurry will be applied to the current collectors; aluminum for the cathode and copper for the anode.

2. Coating and Drying

The slurry is then coated onto the current collector foils. Precision coating techniques are crucial here to ensure uniformity and the correct thickness of the electrode layers. Once coated, the electrodes are passed through drying ovens to remove any solvent, leaving behind only the active material and binder on the collectors.

3. Calendering

After drying, the electrodes undergo calendering, which involves passing them through rollers to compress the material. This process increases the density and mechanical strength of the electrodes, ensuring better electrical contact and conductivity.

4. Cutting and Stacking

The electrodes are then cut into the desired shapes and sizes, according to the specifications of the lithium-ion polymer battery being produced. The cathode and anode sheets are stacked together with a separator in between. The separator is a crucial component that prevents electrical shorts between the electrodes while allowing ionic flow. In laminated lithium-ion polymer batteries, this stacking process is often replaced by a folding or winding process, depending on the design.

5. Lamination

In this critical phase, the stacked or wound electrode and separator assembly are placed into a special laminating press. The assembly is heated and pressed to fuse the layers together into a single cohesive unit, creating a thin and flexible battery structure. This lamination process is key to producing the compact and flat profile characteristic of lithium-ion polymer batteries.

6. Electrolyte Injection

The next step involves the injection of a liquid electrolyte into the laminated cell. The electrolyte facilitates the movement of lithium ions between the cathode and anode during charging and discharging cycles. In lithium-ion polymer batteries, the electrolyte is typically a gel-like substance that fills the microscopic gaps in the electrodes and separator.

7. Sealing and Encapsulation

Once the electrolyte is added, the battery unit is sealed to prevent leakage and exposure to air, which could degrade the components. The sealing process must be airtight and often includes an additional encapsulation step, where the battery is encased in a protective outer shell. This shell enhances mechanical strength and provides insulation.

8. Formation and Testing

The final stage in the manufacturing process is the formation, where the battery is charged and discharged for the first time to activate the electrolyte and ensure proper operation. After formation, every lithium-ion polymer battery undergoes rigorous testing to check its capacity, discharge rate, safety, and overall performance.

Quality Lithium-ion Polymer Battery Vendor

LiPol Battery Co., Ltd is a renowned name in the power industry with over 15 years of experience in producing high-quality lithium-ion polymer battery packs. Our team of experts is well-equipped to meet the unique requirements of our clientele, whether it’s a custom system or stocked items. We take pride in offering a comprehensive range of services that include designing, producing, and packing lithium batteries, as well as providing seamless shipment options.

By capacity, we have 10mAh+ lipo battery, 100mAh+ lipo battery, 200mAh+ lipo battery, 300mAh+ lipo battery, 400mAh+ lipo battery, 500mAh+ lipo battery, 600mAh+ lipo battery, 700mAh+ lipo battery, 800mAh+ lipo battery, 900mAh+ lipo battery, 1000mAh+ lipo battery, 2000mAh+ lipo battery, 3000mAh+ lipo battery, 4000mAh+ lipo battery, 5000mAh+ lipo battery, 6000mAh+ lipo battery, 7000mAh+ lipo battery, 8000mAh+ lipo battery, 9000mAh+ lipo battery, 10000mAh+ lipo battery.

By type, we have rectangular lipo battery, ultra-thin lipo battery, round lipo battery, cylinder lipo battery, 18650 battery, high rate 18650 battery, curved lipo battery, high discharge rate lipo battery, micro round lipo battery, hard case lithium-ion battery, rc lipo battery.

Ultra-thin Lithium-ion Polymer Battery

10000mAh Lithium-ion Polymer Battery

18650 Lithium-ion Polymer Battery

Thin Lithium-ion Polymer Battery List

Part no.Capacity (mAh)T x W x L(mm)Voltage (V)
LP0425297.50.4x25x293.7
LP044050300.4x40x503.7
LP04482311.50.4x48x233.7
LP072736250.7x27x363.7
LP08183180.8x18x313.7
LP094034580.9x40x343.7
LP013035501.0x30x353.7
LP103053901.0x30x533.7
LP141921281.4x19x213.7
LP142817331.4x28x173.7
LP149610715001.4x96x1073.7
LP151020121.5x10x203.7
LP152638951.5x26x383.7
LP15809812201.5x80x983.7
LP151019217001.5x101x923.7
LP161823331.6x18x233.7
LP182142801.8x21x423.7
LP18859520501.8x85x953.7
LP18929220001.8x92x923.7
LP189614232001.8x96x1423.7
LP191622301.9x16x223.7
LP19908420001.9x90x843.7
LP201030372.0x10x303.7
LP201030402.0x10x303.7
LP2012561122.0x12x563.7
LP2015701402x15x703.7
LP202018422.0x20x183.7
LP2020511202x20x513.7
LP2020601002.0x20x603.7
LP202430852.0x24x303.7
LP2031808002.0x31x803.7
LP211528652.1x15x283.7
LP216513623002.1x65x1363.7
LP221220252.2x12x203.7
LP221525402.2x15x253.7
LP221619302.2x16x193.7
LP221620302.2x16x203.7
LP2218381002.2x18x383.7
LP221845902.2x18x453.7
LP222025702.2x20x253.7
LP2233372502.2x33x373.7
LP22578210502.2x57x823.7
LP22609312802.2x60x933.7
LP22669314502.2x66x933.7
LP227511321802.2x75x1133.7
LP2320842502.3x20x843.7
LP2325753002.3x25x753.7
LP2330352002.3x30x353.7
LP2330753902.3x30x753.7
LP2343748752.3x43x743.7
LP23438512602.3x43x853.7
LP236711012502.3x67x1103.7
LP23889929352.3x88x993.7
LP239013538002.3x90x1353.7
LP23979232002.3x97x923.7
LP2310813046502.3x108x1303.7
LP2417642002.4x17x643.7
LP2418381002.4x18x383.7
LP242025752.4x20x253.7
LP242025752.4x20x253.7
LP242025952.4x20x253.7
LP2425602902.4x25x603.7
LP243024902.4x30x243.7
LP243024902.4x30x243.7
LP2447535002.4x47x533.7
LP2449536002.4x49x533.7
LP24506610602.4x50x663.7
LP24536710002.4x53x673.7
LP24658620002.4x65x863.7
LP24658821002.4x65x883.7
LP248111932002.4x81x1193.7
LP249210132002.4x92x1013.7
LP250816152.5x8x163.7
LP251328652.5x13x283.7
LP251328652.5x13x283.7
LP251530802.5x15x303.7
LP251730902.5x17x303.7
LP2517441302.5x17x443.7
LP25171103702.5x17x1103.7
LP251928852.5x19x283.7
LP252025852.5x20x253.7
LP2520301102.5x20x303.7
LP2520381502.5x20x383.7
LP252225952.5x22x253.7
LP2532423202.5x32x423.7
LP2534503802.5x34x503.7
LP2540788502.5x40x783.7
LP2550658002.5x50x653.7
LP2552917002.5x52x913.7
LP25558814002.5x55x883.7
LP25587515002.5x58x753.7
LP255811224002.5x58x1123.7
LP25607012002.5x60x703.7
LP25659921002.5x65x993.7
LP25809020002.5x80x903.7
LP258015838502.5x80x1583.7
LP25839628802.5x83x963.7
LP25919932702.5x91x993.7
LP25939225002.5x93x923.7
LP25979332902.5x97x933.7
LP2510011540002.5x100x1153.7
LP260820302.6x8x203.7
LP261522502.6x15x223.7
LP261627852.6x16x273.7
LP262030902.6x20x303.7
LP2625351802.6x25x353.7
LP2635453802.6x35x453.7
LP2643629302.6x43x623.7
LP2645606002.6x45x603.7
LP2645689502.6x45x683.7
LP26476010002.6x47x603.7
LP26619522002.6x61x953.7
LP26638016502.6x63x803.7
LP26649724902.6x64x973.7
LP26699221002.6x69x923.7
LP26765817502.6x76x583.7
LP26809722502.6x80x973.7
LP26849720002.6x84x973.7
LP268812732002.6x88x1273.7
LP26998330002.6x99x833.7
LP26999532002.6x99x953.7
LP271244902.7x12x443.7
LP2722472602.7x22x473.7
LP2730342402.7x30x343.7
LP2730482802.7x30x483.7
LP2740636002.7x40x633.7
LP2743303002.7x43x303.7
LP2754388502.7x54x383.7
LP276611128002.7x66x1113.7
LP27849635202.7x84x963.7
LP27858930002.7x85x893.7
LP27868327792.7x86x833.7
LP27879932502.7x87x993.7
LP27959430002.7x95x943.7
LP2710510535002.7x105x1053.7
LP281221552.8x12x213.7
LP281228702.8x12x283.7
LP2814381102.8x14x383.7
LP281622602.8x16x223.7
LP281728902.8x17x283.7
LP28406510002.8x40x653.7
LP2844493802.8x44x493.7
LP2848648002.8x48x643.7
LP285214535002.8x52x1453.7
LP2854629502.8x54x623.7
LP285812024002.8x58x1203.7
LP28638020002.8x63x803.7
LP286610325002.8x66x1033.7
LP286814737002.8x68x1473.7
LP286912130302.8x69x1213.7
LP28709522002.8x70x953.7
LP28709818002.8x70x983.7
LP28798725002.8x79x873.7
LP28838428002.8x83x843.7
LP28879230002.8x87x923.7
LP28968030002.8x96x803.7
LP28979129202.8x97x913.7
LP289812250202.8x98x1223.7
LP289812550002.8x98x1253.7
LP291028552.9x10x283.7
LP291126702.9x11x263.7
LP291330802.9x13x303.7
LP2921251202.9x21x253.7
LP2922784502.9x22x783.7
LP2934423802.9x24x423.7
LP29349314002.9x34x933.7
LP29399617152.9x39x963.7
LP29399617152.9x39x963.7
LP29486410002.9x48x643.7
LP295013840202.9x50x1383.7
LP295214535002.9x52x1453.7
LP29547615002.9x54x763.7
LP29558618502.9x55x863.7
LP2957479302.9x57x473.7
LP29588618002.9x58x863.7
LP296511023002.9x65x1103.7
LP29677824202.9x67x783.7
LP29719025502.9x71x903.7
LP298312242002.9x83x1223.7
LP29849635202.9x84x963.7
LP29864514002.9x86x453.7
LP29909740202.9x90x973.7
LP299013540002.9x90x1353.7
LP29918430002.9x91x843.7
LP299114245002.9x91x1423.7
LP2910010035002.9x100x1003.7

5000mAh+ Lithium-ion Polymer Battery List

ModelCapacityT(mm)W(mm)L(mm)
LP1043735000mAh104373
LP1047695000mAh104769
LP1047705000mAh104770
LP1048845000mAh104884
LP1053595000mAh105359
LP1055685000mAh105568
LP1154535000mAh115453
LP1155705000mAh115570
LP1250655000mAh125065
LP1346635000mAh134663
LP28981255000mAh2.898125
LP301021255000mAh3102125
LP31107945000mAh3.110794
LP32801285000mAh3.280128
LP35711235000mAh3.57123
LP36701385000mAh3.670138
LP40881105000mAh488110
LP41801005000mAh4.180100
LP41881105000mAh4.188110
LP41881115000mAh4.188111
LP4271995000mAh4.27199
LP43841155000mAh4.384115
LP4395935000mAh4.39593
LP4665895000mAh4.66589
LP48531455000mAh4.853145
LP4896705000mAh4.89670
LP49561215000mAh4.956121
LP4962925000mAh4.96292
LP5282755000mAh5.28275
LP56581045000mAh5.658104
LP5680905000mAh5.68090
LP57581015000mAh5.758101
LP58621065000mAh5.862106
LP60401575000mAh640157
LP60601005000mAh660100
LP6260905000mAh6.26090
LP65501005000mAh6.550100
LP6560905000mAh6.56090
LP6854775000mAh6.85477
LP6950875000mAh6.95087
LP6957775000mAh6.95777
LP6957805000mAh6.95780
LP7060745000mAh76074
LP7060815000mAh76081
LP7354745000mAh7.35474
LP7355905000mAh7.35590
LP7550775000mAh7.55077
LP7653755000mAh7.65375
LP7656735000mAh7.65673
LP7955765000mAh7.95576
LP8455765000mAh8.45576
LP85501255000mAh8.550125
LP8550855000mAh8.55085
LP8655805000mAh8.65580
LP88381235000mAh8.838123
LP8853675000mAh8.85367
LP9055805000mAh95580
LP9147745000mAh9.14774
LP9252665000mAh9.25266
LP9355625000mAh9.35562
LP9554655000mAh9.55465
LP75481505000mAh7.548150
LP7555905000mAh7.55590
LP6062805000mAh66280
LP9543905000mAh9.54390
LP1155705000mAh115570
LP6560905000mAh6.56090
LP60601005000mAh660100
LP60601105000mAh660110
LP55601005000mAh5.560100
LP6560805000mAh6.56080
LP1043735000mAh104373
LP5462805000mAh5.46280
LP1055685000mAh105568
LP6262805000mAh6.26280
LP1055555000mAh105555
LP1152525000mAh115252
LP6860745000mAh6.86074
LP1248615000mAh124861
LP9554655000mAh9.55465
LP7857675000mAh7.85767
LP7256765000mAh7.25676
LP5462805000mAh5.46280
LP28981225020mAh2.898122
LP40881115020mAh488111
LP48601005050mAh4.860100
LP50491315100mAh549131
LP8257935100mAh8.25793
LP8542915100mAh8.54291
LP6070935140mAh67093
LP33100995150mAh3.310099
LP7547945200mAh7.54794
LP7654765200mAh7.65476
LP78501075200mAh7.850107
LP8944815200mAh8.94481
LP6856845300mAh6.85684
LP9847705300mAh9.84770
LP1245755400mAh124575
LP88361155400mAh8.836115
LP8956665400mAh8.95666
LP1249625500mAh124962
LP5565885500mAh5.56588
LP6774705500mAh6.77470
LP6874705500mAh6.87470
LP71501055500mAh7.150105
LP8575635500mAh8.57563
LP1052655600mAh105265
LP1249625600mAh124962
LP7163955600mAh7.16395
LP6874705800mAh6.87470
LP7551935900mAh7.55193
LP6572925950mAh6.57292
LP9166705980mAh9.16670
LP1060706000mAh106070
LP1247706000mAh124770
LP30921406000mAh392140
LP69551086000mAh6.955108
LP7057946000mAh75794
LP7267756000mAh7.26775
LP7555886000mAh7.55588
LP8856936000mAh8.85693
LP8960906000mAh8.96090
LP9060906000mAh96090
LP9060906000mAh96090
LP7262786200mAh7.26278
LP8060956200mAh86095
LP45721356300mAh4.572135
LP46721336300mAh4.672133
LP46721356300mAh4.672135
LP60621036300mAh662103
LP45721366320mAh4.572136
LP1053786400mAh105378
LP1263656500mAh126365
LP7561956500mAh7.56195
LP8761796500mAh8.76179
LP1060906500mAh106090
LP9056786600mAh95678
LP9056806600mAh95680
LP9860776700mAh9.86077
LP85481166800mAh8.548116
LP85511166800mAh8.551116
LP11371056900mAh1137105
LP31921407000mAh3.192140
LP6081967000mAh68196
LP63671317000mAh6.367131
LP75651217000mAh7.565121
LP8064897000mAh86489
LP75651217000mAh7.565121
LP1355707000mAh135570
LP57671057020mAh5.767105
LP11381147056mAh1138114
LP95451357300mAh9.545135
LP9876807400mAh9.87680
LP10551007500mAh1055100
LP48741327500mAh4.874132
LP56621587500mAh5.662158
LP70541507500mAh754150
LP98451257500mAh9.845125
LP1054887800mAh105488
LP61721117800mAh6.172111
LP1258717800mAh125871
LP62551657900mAh6.255165
LP1065888000mAh106588
LP11521008000mAh1152100
LP1179968000mAh117996
LP1256788000mAh125678
LP12601108000mAh1260110
LP1260908000mAh126090
LP55781308000mAh5.578130
LP62921068000mAh6.292106
LP63541658000mAh6.354165
LP75651218000mAh7.565121
LP76100698000mAh7.610069
LP8080958000mAh88095
LP90601008000mAh960100
LP92531028000mAh9.253102
LP93531028000mAh9.353102
LP90601008000mAh960100
LP75651108000mAh7.565110
LP1260908000mAh126090
LP75651218000mAh7.565121
LP75451528200mAh7.545152
LP52711658500mAh5.271165
LP81651238800mAh8.165123
LP12601109000mAh1260110
LP81581339000mAh8.158133
LP93731299000mAh9.373129
LP10481609000mAh1048160
LP75651139000mAh7.565113
LP12601109000mAh1260110
LP11601009000mAh1160100
LP88701299000mAh8.870129
LP90651159000mAh965115
LP11551109000mAh1155110
LP1260749000mAh126074
LP1162809000mAh116280
LP86661009200mAh8.666100
LP87661009200mAh8.766100
LP10611219200mAh1061121
LP1350989300mAh135098
LP7090909400mAh79090
LP12601109500mAh1260110
LP12601109500mAh1260110
LP88701299500mAh8.870129
LP93731299500mAh9.373129

18650 Lithium-ion Polymer Battery List

ModelVoltage(V)Capacity(mAh)Size(mm)
LP18650D3.7220018.5*70
LP18650C3.7260018.5*70
LP18650B3.7280018.5*70
LP18650P3.7300018.5*70
LP18650A3.7320018.5*70
LP18650S3.7335018.5*70
LP18650A+3.7350018.5*70
LP18650D 2P3.7220019*37*67
LP18650C 2P3.7520019*37*67
LP18650B 2P3.7560019*37*67
LP18650P 2P3.7600019*37*67
LP18650A 2P3.7640019*37*67
LP18650S 2P3.7670019*37*67
LP1865A+ 2P3.7700019*37*67
LP18650D 3P3.7660019*56*70
LP18650C 3P3.7780019*56*70
LP18650B 3P3.7840019*56*70
LP18650P 3P3.7900019*56*70
LP18650A 3P3.7960019*56*70
LP18650S 3P3.71005019*56*70
LP18650A+ 3P3.71050019*56*70
LP18650D 2S7.4220019*37*67
LP18650C 2S7.4260019*37*67
LP18650B 2S7.4280019*37*67
LP18650P 2S7.4300019*37*67
LP18650A 2S7.4320019*37*67
LP18650S 2S7.4335019*37*67
LP18650A+ 2S7.4350019*37*67
LP18650D 3S11.1220019*56*70
LP18650C 3S11.1260019*56*70
LP18650B 3S11.1280019*56*70
LP18650P 3S11.1300019*56*70
LP18650A 3S11.1320019*56*70
LP18650S 3S11.1335019*56*70
LP18650A+ 3S11.1350019*56*70