In the market for electric bicycles, the most commonly used is the lead-acid maintenance-free batteries, which uses the adsorption shingles fiberglass battery AGM, and the use of colloidal gel based gel technology batteries electrolyte.
Lead-lead acid battery-acid 6Y270 battery works in the anode (PbO2) and cathode (PB) soaked in electrolyte (dilute sulfuric acid), have clusters of inter-2v power. Discharge of chemical changes in dilute sulfuric acid, which work with the cathode and anode active counseling react to produce new compounds, lead sulfate. Sulfuric acid composition released by the discharge of the electrolyte flow over the concentration of sulfuric acid from the thinnest. The consumption of components and is proportional to the amount of discharge, as the measured concentration of sulfuric acid electrolyte, which is measured the specific gravity, it turns out that the volume of discharge or the residual power. Loading of the chemical modification of the discharge plate anode, a cathode plate is produced by the reduction of lead sulphate in the charge was broken down into sulfuric acid, lead and lead peroxide, so that concentration of electrolyte in the battery gradually increases, which is the electrolyte, the proportion of the increase and a gradual return to pre-discharge levels, this shows that the battery has been restored to the active substance can be re -powered state when the bipolar lead sulfate has been restored to the original active substance, which is equivalent to charging the tip of the plate cathode to produce hydrogen, the anode plate is produced oxygen, the burden to the finals, almost all current is used in the electrolysis of water, which the electrolyte is reduced at this time should complete the water.
AGM battery is a F2024B battery in the infusion of dilute sulfuric acid, sulfuric acid is absorbed in the ultra-fine fiber separator glass plates and almost no flow of electro-hydraulics. Currently on the market majority of AGM batteries battery electric bike.
Gel-type electrolyte gel gel battery is not free after the electro-hydraulic and battery acid leakage is much less likely than the first infusion of his more than 10 ~ 15% sulfuric acid, the loss water was low and it would not freeze the battery water loss caused by failure; gel made in increasing the intensity of the score, the protection of the plate to compensate for the case of partition shrinkage defects in acid, so the editing is not easy to reduce the pressure to extend the life of the battery with one of the reasons, filling the clap and frost the gap between the plates thereby reducing the internal resistance of the battery charge acceptance could be improved. Therefore, an excessive discharge of gel batteries, the capacity of recovery of Shaanxi and loads at low temperature discharge performance is higher than AGM batteries, gel consistency of the stack is much better than competing batteries AGM. China has been mass produced gel has the following four categories: Gas gum, silica sol, soil mixed with a gel organic silicon polymer.
Lithium-ion VGP-BPS2 battery works are recharging the battery, the cathode material of lithium-out, through the diaphragm into the graphite anode, the battery discharges, the lithium-ion and off of ‘graphite anode, cathode material through the membrane back in. With lithium-ion loading and unloading of continuous positive and negative molding and prolapse.
Lithium-Ion battery is a rechargeable battery, because it has a high energy density may be high current charge and discharge, no memory effect, raw materials, low cost, environmentally friendly and Many other advantages, so after the advent of the rapid increase in sales year after year in the future will probably become two sub-cells winner. 90 years since the beginning of last century, since the electronic products in button batteries, cell phones, digital dc products in the lithium battery is also applied to electric bicycles. However, the cost of lithium-ion battery for electric vehicles accounted for one third to half the cost is much greater than lead acid batteries in vehicle weight. And because the lithium batteries of high specific energy, materials, poor stability, lithium batteries subject to safety problems. As technology developed lithium-ion battery electric vehicles will become a trend of high quality.