AGM Separator in different Lead-acid Batteries applications & It s Industry Outlook Sophia Du Hua Yang Industry
Summary of the content 1. AGM Separator classification & performance 2. The main raw material of AGM Separator 3. AGM Separator manufacturing process 4. Significant test projects analysis of AGM separator 5. Performance analysis of different AGM separator 6. Industry Status & Prospect of AGM Separator
Forewords--VRLA batteries & AGM Separator VRLA Batteries--The most widely used secondary energy. Able to store and provide a high energy density, can be adapted to fast charging & fast release High security, long life cycle Strong temperature adaptability to the environment Low cost, wide application scope AGM Separator-- The 3 rd plate of VRLA Batteries With the development of VLRA lead-acid battery technology, the requirements for AGM separator are higher than ever.
AGM Separator Classification & Performance
NO.1 Whole Micro-glass fiber Separator Not contain any binder, Using wet papermaking manufacture to produce. Applied to more than 90% of the lead-acid batteries Power Battery Communication Batteries UPS Battery Railway Battery
Performance of whole Micro-glass fiber separator 1. Keep the electrolyte ability strong, quickly absorb the electrolyte; 2. High porosity, small pore size, effectively prevent the battery short circuit; 3. Stable chemical performance & low resistance; 4. Have a certain elasticity, guarantee to keep the compression state when battery is using.
NO.2 AGM separator with PE Fiber Using Micro-glass fiber as main raw materials, add a certain proportion of PE fiber, Using wet papermaking manufacture to produce. Apply to start-stop/winding type lead-acid battery. Start-stop system Lead- Acid Battery Winding Type Battery Start-stop system Electric car
Performance of AGM separator with PE Fiber 1. Have good mechanical strength,more suitable for the high pressure assembly. 2. Have good heat-resistant ability,more suitable for high-temperature environment 3. Good bendability. 4. Have good pressure maintaining in wet state, guarantee to keep the compression state when battery is using, improve the seismic performance of battery.
Main raw material of AGM Separator
1. Micro-glass fiber Miro-glass fiber main specification and diameter comparison Beating Degree( SR) Beating Scope( SR) Diameter(μm) 29 27-32 1.5-2.5 34 32-37 0.8-1.5 39 37-42 0.8-1.0
Manufacturing process of Micro-glass fiber Glass blocks melt Glass liquid transfer High temperature blowing Package Fiber collection Glass fiber collection
How to determine the pros and cons of Micro-glass fiber Length of Micro-glass fiber: Adopt the test of paper pulp wet hanging weight, indirect detecting fiber average length. Higher wet weight, longer fiber s length. Diameter of the Micro-glass fiber Beating degree can indirectly reflect the thickness of fiber diameter Higher beating degree, thinner fiber diameter. Qualified Micro-glass fiber, when the beating degree is on-spec, Longer fiber s length, better fiber performance. SEM photos at different amplification
2. PET Fiber Single fiber amplifier PET fiber structure chart Fiber bundle magnification
PET fiber s character & It s effect to AGM Separator Easily to connection The melting point of the outer skin is only 110 Excellent dispersion performance Coating excellent hydrophilicity of agents, and has good dispersion performance in the water Strong mechanical strength keeping polyester characteristic of high strength & low tensile. Super strong acid resistance performance.
Manufacturing process of AGM Separator
AGM Separator Production Flow Chart Pulping Process Forming Process Drying Process Rolling & on-line cutting
4 main Manufacturing Systems of Hua Yang Heavy slag separator Vibrating screen Impurities remove system Central pulping control device Forming pulping transfer system Central forming & pulping system Auto-temperature control system On-line thickness test system
4 Insists of Hua Yang QC Control
Significant test projects analysis of AGM separator
NO.1 Acid absorption at pressure --effectively detect the electrolyte keeping ability. Acid absorption at pressure device drawing Pressure vs. acid absorption curve 40kPa 24hrs acid absorption at data: 125~150mm, acid absoption:6.3g/g, 425~450mm,acid absoption:6.1g/g
Acid absorption at pressure ----AGM with PE fiber Vs. Whole Micro-glass fiber AGM Pressure kpa 10 20 30 40 50 60 70 80 90 100 aaagmseparator Acid absorption of AGM with PE fiber g/g Acid absorption of AGM g/g 8.08 7.45 6.88 6.35 6.07 5.86 5.61 5.39 5.19 5.11 8.65 7.73 6.85 6.33 5.82 5.5 5.3 5.16 5.03 4.94 吸酸量 (g/g) Acid absorption 9 8.5 8 7.5 7 6.5 6 5.5 5 4.5 4 压力吸酸曲线 Acid absorption at Pressure curve 0 10 20 30 40 50 60 70 80 90 100 混合纤维隔板 AGM 隔板 Blue-AGM with PE Pink-AGM only 压力 (kpa) Pressure(kPa)
How to ensure the AGM separator with high electrolyte retention The key factors: Never use centrifugal glass fiber & larger than 4 μm diameter glass fiber during the production. Mature & stable process control. After test and tracking, excellent AGM can ensure electrolyte ability strong, extent remit battery electrolyte stratification problem greatly, avoid the battery failure caused by the electrolyte stratification to make the plates corrosion.
NO.2 AGM Separator anti-puncture strength Plates with lead slag or burrs will damage the plates, caused the battery short circuit Hua Yang AGM separator s anti-puncture strength is up to 0.4kg/mm. After dissection of the failure E-Bike batteries with Hua Yang AGM, dendritic crystal short circuit ratio is less than 1%. Anti-puncture equipment simple drawing
How to improve the anti-puncture strength of AGM Separator? The key factors: Add a certain proportion PE fiber in production, keeping different QC control compared to the whole fiber AGM Tensile strength improved more than 10% than the whole fiber AGM Separator. Using stable & qualified raw material.
NO.3 AGM Separator keeping pressure ability at wet state --test the touch tightness of AGM & Plates Through simulated battery assembly, this device could test the ability of keeping pressure of AGM. The higher keeping pressure ability can make AGM and plates touch tightly. Avoid the plates active material getting off or displacement effectively, to prevent battery inner resistance increased. Fundamentally solve the rapid decline of battery capacity during later used period. In this way, the battery life can be improved.
How to improve the keeping pressure ability at wet of AGM Separator? The key factors: Using the stable and more thinner diameter Micro-glass fiber. Density should be controlled at a relative higher degree. Mature & stable process control.
Performance analysis of different AGM separator
NO1. Apply to storage &UPS AGM Separator Smaller specific surface area. High porosity & bigger pore size. Faster acid absorption speed. Has a good ability to keep the sulfuric acid carrier, to alleviate the sulfuric acid layer by layer.
Storage &UPS battery test data Battery life test Life circle-index test
NO2. Apply to power battery AGM Separator High strength & strong resistance compression Hua Yang through all kinds of fibers rational combination to achieve. Appropriate porn size, keeping the state of compression during use process Meet the instantaneous large current discharge, improve the life time of battery. Hua Yang has been the outstanding and major AGM Supplier of the 1 st Chinese power batteries ---Tian Neng Group.
Partial test data of Tian Neng Products Data shows that: Discharge curve Different rata discharge curve Using Hua Yang AGM separator for power battery, the life can increase 20~30% than other similar products. Cryogenic property is superior 10% to other similar products. Customers refund rate is lower 0.5~1.0% Life discharge curve
NO3. Apply to start-stop system AGM separator Through adding a certain ratio PET fiber Perfect anti-punctual performance Perfect tensile strength Stronger keeping compress ability at wet state
Batteries assembled by the AGM Separator with PE fiber The batteries assembled by AGM with PE fiber, which lifetime is equivalent to twice than ordinary flooded Lead-acid batteries. Products advantages as below: More powerful ability to charge and discharge cycle, can provide the electricity in the case of idle speed for a long time. Even in the case of low power, starting power still remain strong. Vibration resistance is strong, completely free maintenance. Start-stop technique batteries
Industry Status & Prospect of AGM Separator
Industry status Industrial outlook Small businesses will be washed out gradually, extensive industry pattern was reversed. To provide security & stability AGM separator is still the most urgent problem for each producer. And the key to provide wonderful AGM is to seek the stable raw materials. Equipment upgrades obviously, higher automation level, some enterprises have achieved part automatic control of the process, but still need to upgrade. Manufacturing equipment needs to be intelligentize & automatic. Product performance monitoring should cover the whole process. Due to excess production capacity, low-end products competition is intense, price war is very fierce. High value-added & high-tech products are becoming more popular, such as start-stop leadacid battery AGM, high temperature resistant AGM, and low temperature AGM, etc.
Industry ecology & Cognitive level Adopt an open ecological strategy, Construct a cognition system of the whole AGM industry. Build a more healthy and dynamic cooperative environment.
Talent & workshop environment and culture Build the whole AGM industrial chain talent development system. Using the best talent to achieve industry growth Trust employees, let them to be free and full of creative. Build an orderly, clean & tidy working environment.
We believe New energy is a industry which is running together with the future world, which is also a great opportunity for China's largest manufacturing transformation.
Let s embrace the wonderful future!
Thanks for your time. Shandong Province Shenxian Hua Yang Industry Co., Ltd Tel:+(86)635-7887888 Fax:+(86)635-7885777 E-mail:huayangagm@163.com Web:http://www.huayangagm.com