What is the production process of laminated lithium-ion polymer batteries?

What is 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 lithium-ion polymer 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.

China Lithium-ion Polymer Battery Supplier

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.

5000mAh+ Lithium Polymer Battery Models

5000mAh+ Lithium-ion Polymer Battery Lists

ModelCapacityLength(mm)Width(mm)Thickness(mm)Voltage
LP251001155000mAh1151002.53.7V
LP251351505000mAh1501352.53.7V
LP261081565000mAh1561082.63.7V
LP27861625000mAh162862.73.7V
LP28681655000mAh165682.83.7V
LP28981255000mAh125982.83.7V
LP30921405000mAh140923.03.7V
LP301021255000mAh12510233.7V
LP31107945000mAh941073.13.7V
LP32801285000mAh128803.23.7V
LP35711235000mAh23713.53.7V
LP36701385000mAh138703.63.7V
LP37591355000mAh135593.73.7V
LP38701295000mAh129703.83.7V
LP38701325000mAh132703.83.7V
LP38791375000mAh137793.83.7V
LP39701455000mAh145703.93.7V
LP40881105000mAh1108843.7V
LP41701055000mAh105704.13.7V
LP41801005000mAh100804.13.7V
LP41881105000mAh110884.13.7V
LP41881115000mAh111884.13.7V
LP4271995000mAh99714.23.7V
LP43841155000mAh115844.33.7V
LP4395935000mAh93954.33.7V
LP4471905000mAh90714.43.7V
LP46631185000mAh118634.63.7V
LP4665895000mAh89654.63.7V
LP48581025000mAh102584.83.7V
LP48601455000mAh145604.83.7V
LP4866915000mAh91664.83.7V
LP48531455000mAh145534.83.7V
LP4896705000mAh70964.83.7V
LP4965925000mAh92654.93.7V
LP49561215000mAh121564.93.7V
LP4962925000mAh92624.93.7V
LP51541125000mAh112545.13.7V
LP5282755000mAh75825.23.7V
LP53601055000mAh105605.33.7V
LP5462805000mAh80625.43.7V
LP5462805000mAh80625.43.7V
LP55601005000mAh100605.53.7V
LP55561365000mAh136565.53.7V
LP55601005000mAh100605.53.7V
LP55651135000mAh113655.53.7V
LP56581045000mAh104585.63.7V
LP5680905000mAh90805.63.7V
LP57571015000mAh101575.73.7V
LP57581015000mAh101585.73.7V
LP5854975000mAh97545.83.7V
LP58631065000mAh106635.83.7V
LP58621065000mAh106625.83.7V
LP6062805000mAh806263.7V
LP60601005000mAh1006063.7V
LP60601105000mAh1106063.7V
LP60481455000mAh145486.03.7V
LP60601005000mAh100606.03.7V
LP60601105000mAh110606.03.7V
LP6060905000mAh90606.03.7V
LP60401575000mAh1574063.7V
LP60601005000mAh1006063.7V
LP6262805000mAh80626.23.7V
LP62511075000mAh107516.23.7V
LP6260905000mAh90606.23.7V
LP6261955000mAh95616.23.7V
LP6266995000mAh99666.23.7V
LP6260905000mAh90606.23.7V
LP63471135000mAh113476.33.7V
LP63481185000mAh118486.33.7V
LP6365905000mAh90656.33.7V
LP6380955000mAh95806.33.7V
LP64571085000mAh108576.43.7V
LP6560905000mAh90606.53.7V
LP6560805000mAh80606.53.7V
LP65501205000mAh120506.53.7V
LP6560905000mAh90606.53.7V
LP6563955000mAh95636.53.7V
LP6565835000mAh83656.53.7V
LP65501005000mAh100506.53.7V
LP6560905000mAh90606.53.7V
LP66531105000mAh110536.63.7V
LP66651435000mAh143656.63.7V
LP6860745000mAh74606.83.7V
LP68481355000mAh135486.83.7V
LP6854985000mAh98546.83.7V
LP68561055000mAh105566.83.7V
LP6854775000mAh77546.83.7V
LP6954985000mAh98546.93.7V
LP6950875000mAh87506.93.7V
LP6957775000mAh77576.93.7V
LP6957805000mAh80576.93.7V
LP7060745000mAh746073.7V
LP7060815000mAh816073.7V
LP7256765000mAh76567.23.7V
LP7258885000mAh88587.23.7V
LP7354745000mAh74547.33.7V
LP7355905000mAh90557.33.7V
LP7457735000mAh73577.43.7V
LP7555905000mAh90557.53.7V
LP75431285000mAh1284.37.53.7V
LP75581155000mAh115587.53.7V
LP7550775000mAh77507.53.7V
LP75481505000mAh150487.53.7V
LP7653755000mAh75537.63.7V
LP7656735000mAh73567.63.7V
LP7857675000mAh67577.83.7V
LP7850935000mAh93507.83.7V
LP7862805000mAh80627.83.7V
LP7955765000mAh76557.93.7V
LP8057815000mAh81578.03.7V
LP8060905000mAh90608.03.7V
LP80631645000mAh164638.03.7V
LP8065805000mAh80658.03.7V
LP80681355000mAh135688.03.7V
LP8455905000mAh90558.43.7V
LP8455765000mAh76558.43.7V
LP85421155000mAh115428.53.7V
LP85471205000mAh120478.53.7V
LP85501255000mAh125508.53.7V
LP8550855000mAh85508.53.7V
LP8655805000mAh80558.63.7V
LP88381235000mAh123388.83.7V
LP8853675000mAh67538.83.7V
LP9048905000mAh90489.03.7V
LP9050875000mAh87509.03.7V
LP9055805000mAh805593.7V
LP9150875000mAh87509.13.7V
LP9147745000mAh74479.13.7V
LP9252665000mAh66529.23.7V
LP9355625000mAh62559.33.7V
LP9543905000mAh90439.53.7V
LP9554655000mAh65549.53.7V
LP9548965000mAh96489.53.7V
LP9554655000mAh65549.53.7V
LP1043735000mAh7343103.7V
LP1055685000mAh6855103.7V
LP1055555000mAh5555103.7V
LP1048845000mAh844810.03.7V
LP1055735000mAh735510.03.7V
LP1055755000mAh755510.03.7V
LP1060705000mAh706010.03.7V
LP1070635000mAh637010.03.7V
LP1043735000mAh7343103.7V
LP1047695000mAh6947103.7V
LP1047705000mAh7047103.7V
LP1048845000mAh8448103.7V
LP1053595000mAh5953103.7V
LP1055685000mAh6855103.7V
LP1155705000mAh7055113.7V
LP1152525000mAh5252113.7V
LP1154535000mAh5354113.7V
LP1155705000mAh7055113.7V
LP1248615000mAh6148123.7V
LP1243835000mAh834312.03.7V
LP1252785000mAh785212.03.7V
LP1250655000mAh6550123.7V
LP1346635000mAh6346133.7V
LP28981225020mAh122982.83.7V
LP3685985020mAh98853.63.7V
LP40881115020mAh1118843.7V
LP58491125030mAh112495.83.7V
LP48601005050mAh100604.83.7V
LP6160925050mAh92606.13.7V
LP50491315100mAh1314953.7V
LP6473635100mAh63736.43.7V
LP8257935100mAh93578.23.7V
LP8542915100mAh91428.53.7V
LP72451085120mAh108457.23.7V
LP6070935140mAh937063.7V
LP33100995150mAh991003.33.7V
LP291001185200mAh1181002.93.7V
LP66441205200mAh120446.63.7V
LP72551455200mAh145557.23.7V
LP7547945200mAh94477.53.7V
LP7654765200mAh76547.63.7V
LP78501075200mAh107507.83.7V
LP82411325200mAh132418.23.7V
LP8944815200mAh81448.93.7V
LP1152745200mAh745211.03.7V
LP49601235250mAh123604.93.7V
LP54651255250mAh125655.43.7V
LP5267935270mAh93675.23.7V
LP7854885270mAh88547.83.7V
LP37871475300mAh147873.73.7V
LP6856845300mAh84566.83.7V
LP75681355300mAh135687.53.7V
LP8360905300mAh90608.33.7V
LP9249905300mAh90499.23.7V
LP9847705300mAh70479.83.7V
LP4787855380mAh85874.73.7V
LP6966765400mAh76666.93.7V
LP70351425400mAh142357.03.7V
LP72501145400mAh114507.23.7V
LP88361155400mAh115368.83.7V
LP8956665400mAh66568.93.7V
LP1154725400mAh725411.03.7V
LP1245755400mAh7545123.7V
LP30951605500mAh160953.03.7V
LP55791115500mAh111795.53.7V
LP5565885500mAh88655.53.7V
LP59581025500mAh102585.93.7V
LP65661455500mAh145666.53.7V
LP6774705500mAh70746.73.7V
LP6874705500mAh70746.83.7V
LP71501055500mAh105507.13.7V
LP75521135500mAh113527.53.7V
LP75541005500mAh100547.53.7V
LP8575635500mAh63758.53.7V
LP1249625500mAh6249123.7V
LP70581165600mAh116587.03.7V
LP7163955600mAh95637.13.7V
LP1052655600mAh6552103.7V
LP1249625600mAh6249123.7V
LP47781285800mAh128784.73.7V
LP5465975800mAh97655.43.7V
LP6874705800mAh70746.83.7V
LP9060905800mAh90609.03.7V
LP9869705800mAh70699.83.7V
LP1046965800mAh964610.03.7V
LP1054905800mAh905410.03.7V
LP1160755800mAh756011.03.7V
LP7551935900mAh93517.53.7V
LP6572925950mAh92726.53.7V
LP9166705980mAh70669.13.7V
LP30921406000mAh1409233.7V
LP69551086000mAh108556.93.7V
LP7057946000mAh945773.7V
LP7267756000mAh75677.23.7V
LP7555886000mAh88557.53.7V
LP8856936000mAh93568.83.7V
LP8960906000mAh90608.93.7V
LP9060906000mAh906093.7V
LP1060706000mAh7060103.7V
LP1247706000mAh7047123.7V
LP7262786200mAh78627.23.7V
LP8060956200mAh956083.7V
LP45721356300mAh135724.53.7V
LP46721336300mAh133724.63.7V
LP46721356300mAh135724.63.7V
LP60621036300mAh1036263.7V
LP45721366320mAh136724.53.7V
LP1053786400mAh7853103.7V
LP7561956500mAh95617.53.7V
LP8761796500mAh79618.73.7V
LP1263656500mAh6563123.7V
LP9056786600mAh785693.7V
LP9056806600mAh805693.7V
LP9860776700mAh77609.83.7V
LP85481166800mAh116488.53.7V
LP85511166800mAh116518.53.7V
LP11371056900mAh10537113.7V
LP31921407000mAh140923.13.7V
LP6081967000mAh968163.7V
LP63671317000mAh131676.33.7V
LP75651217000mAh121657.53.7V
LP8064897000mAh896483.7V
LP1355707000mAh7055133.7V
LP57671057020mAh105675.73.7V
LP11381147056mAh11438113.7V
LP95451357300mAh135459.53.7V
LP9876807400mAh80769.83.7V
LP48741327500mAh132744.83.7V
LP56621587500mAh158625.63.7V
LP70541507500mAh1505473.7V
LP98451257500mAh125459.83.7V
LP10551007500mAh10055103.7V
LP61721117800mAh111726.13.7V
LP1054887800mAh8854103.7V
LP1258717800mAh7158123.7V
LP62551657900mAh165556.23.7V
LP55781308000mAh130785.53.7V
LP62921068000mAh106926.23.7V
LP75651108000mAh110657.53.7V
LP75651218000mAh121657.53.7V
LP90601008000mAh1006093.7V
LP1260908000mAh9060123.7V
LP63541658000mAh165546.33.7V
LP75651218000mAh121657.53.7V
LP76100698000mAh691007.63.7V
LP8080958000mAh958083.7V
LP90601008000mAh1006093.7V
LP92531028000mAh102539.23.7V
LP93531028000mAh102539.33.7V
LP1065888000mAh8865103.7V
LP11521008000mAh10052113.7V
LP1179968000mAh9679113.7V
LP1256788000mAh7856123.7V
LP12601108000mAh11060123.7V
LP1260908000mAh9060123.7V
LP75451528200mAh152457.53.7V
LP52711658500mAh165715.23.7V
LP81651238800mAh123658.13.7V
LP81581339000mAh133588.13.7V
LP93731299000mAh129739.33.7V
LP10481609000mAh16048103.7V
LP12601109000mAh11060123.7V
LP75651139000mAh113657.53.7V
LP88701299000mAh129708.83.7V
LP90651159000mAh1156593.7V
LP11601009000mAh10060113.7V
LP11551109000mAh11055113.7V
LP1162809000mAh8062113.7V
LP12601109000mAh11060123.7V
LP1260749000mAh7460123.7V
LP86661009200mAh100668.63.7V
LP87661009200mAh100668.73.7V
LP10611219200mAh12161103.7V
LP1350989300mAh9850133.7V
LP7090909400mAh909073.7V
LP88701299500mAh129708.83.7V
LP93731299500mAh129739.33.7V
LP12601109500mAh11060123.7V
LP647213210000mAh132726.43.7V
LP805815710000mAh1575883.7V
LP815814510000mAh145588.13.7V
LP815815610000mAh156588.13.7V
LP887012910000mAh129708.83.7V
LP906511510000mAh1156593.7V
LP906511310000mAh1136593.7V
LP906513410000mAh1346593.7V
LP926511510000mAh115659.23.7V
LP926511510000mAh115659.23.7V
LP937312910000mAh129739.33.7V
LP937312910000mAh129739.33.7V
LP956512510000mAh125659.53.7V
LP985810210000mAh102589.83.7V
LP104811810000mAh11848103.7V
LP105511010000mAh11055103.7V
LP106011010000mAh11060103.7V
LP116511010000mAh11065113.7V
LP116010010000mAh10060113.7V
LP115511010000mAh11055113.7V
LP116010010000mAh10060113.7V
LP116511310000mAh11365113.7V
LP126011010000mAh11060123.7V
LP126010010000mAh10060123.7V
LP12628010000mAh8062123.7V
LP126010010000mAh10060123.7V
LP126011010000mAh11060123.7V
LP12628010000mAh8062123.7V
LP13607910000mAh7960133.7V
LP13767410000mAh7476133.7V
LP14567710000mAh7756143.7V
LP14607410000mAh7460143.7V
LP905516011000mAh1605593.7V
LP11689111000mAh9168113.7V
LP127013011000mAh13070123.7V
LP758015012000mAh150807.53.7V
LP808013012500mAh1308083.7V
LP808013015000mAh1308083.7V
LP146512519000mAh12565143.7V
LP119018523000mAh18590113.7V

How to order lithium polymer batteries?

1. Send your Requirements
Find us through the sidebar contact form, send us your requirements for the lipo battery, such as dimensions(thickness x width x length), voltage, capacity, max working current, protection circuit module(PCM), wires request, thermistor(NTC), connector type, etc. We will recommend the best suitable rechargeable lithium polymer battery for you.
2. Quotation
When we receive your inquiries, we will reply to you within 12 hours. We mainly communicate by email.
3. Order Process
When you are ready to place lithium polymer battery orders with us, we will confirm the battery models, quantities, prices, and other details, and send you an invoice for payment. We accept PayPal payments, credit cards payment, and bank transfer payments. Then, we will arrange your order. The lead time depends on specific orders.
4. Shipment
When we finish the lithium polymer batteries, we will ship them via DHL/UPS/FedEx air shipping, it is safe and fast. And, we will send the tracking number to you when we get it.
5. Warranty
Our warranty for the lithium polymer battery is one year after the sale. (Refund or resend batteries)
Range of warranty: There is low voltage, expansion, or leakage with the correct use of the lithium polymer battery in the warranty period.