Deep Cycle VRLA GEL AGM Battery
There are two kinds of valve-controlled sealed lead-acid batteries: one is the use of ultrafine glass fiber diaphragm (AGM) valve-controlled sealed lead-acid batteries; One is the use of colloidal electrolyte (GFL) valve controlled sealed lead-acid battery (abbreviated as GFL-VRLA Battery).
They all use the cathode absorption principle to seal the battery. Therefore, there must be about 10% diaphragm gap in AGM-VRLA battery diaphragm, for GFL-VRLA battery, after the perfusion of silica sol into gel, skeleton to further shrink, silica sol viscosity should be controlled at about 10mPa.s, so that gel cracks through between positive and negative plates. Voids or cracks provide a channel for the oxygen precipitated from the positive plate to reach the negative electrode.
In the production of AGM-VRLA battery, too much perfusion electrolyte is not conducive to the recombination of oxygen in the cathode, and too much perfusion electrolyte will cause the internal resistance of AGM-VRLA battery to increase. In the production of GFL-VRLA battery, if the viscosity of silica sol is too high, that is, the amount of silicon solution is too large, it will cause cracks in the gel and increase the internal resistance of GFL-VRLA battery. On the contrary, it is not conducive to the recombination of oxygen in the cathode. Therefore, the valve-controlled sealed lead-acid battery requires very strict production technology.
1. Major differences in structure and process
Both AGM-VRLA batteries and GFL-VRLA batteries are sealed by cathode absorption principle. When the valve-controlled sealed lead-acid battery is charged, the positive electrode will release oxygen and the negative electrode will release hydrogen. Positive oxygen evolution starts when the positive charge reaches 70%. The precipitated oxygen reaches the negative electrode and reacts with the negative electrode in the following way to achieve the purpose of cathode absorption.
GEL batteries are in the minority, but they have unique advantages and are favored by the industry and users. The outstanding advantages of GEL battery are: long service life (up to 10-20 years); Withstand multiple charge and discharge cycles (up to 500-1500 cycles at 80%DoD); Tubular plate can be used for GEL batteries, longer service life; GEL battery has good deep discharge resistance; It can run under partial charge; No electrolyte delamination; High temperature performance is good; Almost no thermal runaway occurs. Only its price is higher than AGM Battery. GEL batteries are in the minority, but they have unique advantages and are favored by the industry and users. The outstanding advantages of GEL battery are: long service life (up to 10-20 years); Withstand multiple charge and discharge cycles (up to 500-1500 cycles at 80%DoD); Tubular plate can be used for GEL batteries, longer service life; GEL battery has good deep discharge resistance; It can run under partial charge; No electrolyte delamination; High temperature performance is good; Almost no thermal runaway occurs. Only its price is higher than AGM battery.
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A nyloc nut is a fastener that incorporates a nylon component to effectively lock the nut into position on the bolt. The nylon component of the nyloc nut has a smaller inside diameter than the actual nut, thereby acting to lock the nut in place by squeezing the nylon firmly around the bolt when tightened. Unlike a standard locking washer, the nyloc nut prevents the nut from loosening under vibration as the nylon is tightly wedged into the bolt threads and provides resistance to turning once tightened.
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SS304 SS316 M12 DIN982 Stainless Steel Hex Thick Nuts with Non-Metallic Insert
Model NO.: DIN982
Trademark: HNF
Transport Package: Carton and Pallet
Specification: SS304 SS316 M12
Origin: China
HS Code: 7318160000
Model NO.: DIN982
Trademark: HNF
Transport Package: Carton and Pallet
Specification: SS304 SS316 M12
Origin: China
HS Code: 7318160000
A nyloc nut is a fastener that incorporates a nylon component to effectively lock the nut into position on the bolt. The nylon component of the nyloc nut has a smaller inside diameter than the actual nut, thereby acting to lock the nut in place by squeezing the nylon firmly around the bolt when tightened. Unlike a standard locking washer, the nyloc nut prevents the nut from loosening under vibration as the nylon is tightly wedged into the bolt threads and provides resistance to turning once tightened.