Colloidal lead-acid batteries and ordinary lead-acid batteries are the same in performance, but the electrolyte inside the battery is a latex-like semi-solidified state, one is a liquid state, and the ordinary lead-acid batteries in the liquid state need to add distilled water irregularly during use, and the colloidal lead-acid batteries do not need to add distilled water maintenance (usually referred to as maintenation-free).
The disadvantage of the colloidal lead-acid battery is that the overload charge and discharge is very harmful, once the overload charge and discharge will cause the battery to be irrecoverable, or even scrapped, while the ordinary lead-acid battery overload caused by plate deformation and vulcanization can be small current charge and discharge recovery (but can not be restored).
Lead-acid battery
First, lead-acid batteries
The electrode is mainly made of lead and its oxide, and the electrolyte is a battery of sulfuric acid solution. English: Lead-acidbattery. In the discharge state, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead. In the charging state, the main components of the positive and negative electrodes are lead sulfate. Divided into exhaust batteries and maintenance-free lead-acid batteries.
Performance characteristics
1, safe sealing
During normal operation, the electrolyte will not leak out of the battery terminals or housing.
2. No free acid
A special suction separator keeps the acid inside, and there is no free acid inside the battery, so the battery can be placed anywhere.
3. Deflating system
When the internal pressure of the battery exceeds the normal level, the VRLA(Valve-RegulatedLeadAcidBattery is short for "valve-sealed lead-acid battery") battery will release excess gas and automatically reseal to ensure that there is no excess gas in the battery.
4. Easy maintenance
Due to the unique gas recombination system, the resulting gas is converted into water, and no additional water is required during the battery's use.
5, long service life
With a corrosion-resistant lead-calcium alloy plate, the battery can be recharged for 10-15 years.
6, stable quality, high reliability
Using advanced production technology and strict quality control system, the quality of the battery is stable and the performance is reliable. Voltage, capacity and seal are 100% checked on line.
Scope of application
Standby power supply
1. Telecommunications
2. Solar energy system
3, electronic switching system
4, communication equipment: base station, PBX, CATV, WLL, ONU, STB, cordless telephone, etc
5, backup power supply: UPS, ECR, computer backup system, sequence, etc
6, emergency equipment: emergency light, flashlight, fire alarm, fire brake
Main power supply
1. Communication equipment: transceiver
2, electric control locomotive: collection vehicle, automatic transport vehicle, electric wheelchair, cleaning robot, electric vehicle and so on
3. Mechanical tool starters: lawnmowers, hedgetrimmers, cordless drills, electric drivers, electric sledges, etc
4, industrial equipment/instruments
5, camera: flash, VTR/VCR, movie lights, etc
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Second, colloidal battery
The colloidal lead-acid battery is an improvement of the ordinary lead-acid battery with liquid electrolyte. The sulfuric acid electrolyte is replaced by colloidal electrolyte, and the safety, power storage, discharge performance and service life are improved compared with the ordinary battery.
The colloidal lead-acid battery adopts gel-like electrolyte, and there is no free liquid inside. Under the same volume, the electrolyte capacity is large, the heat capacity is large, and the heat dissipation ability is strong, which can avoid the thermal runaway phenomenon of the general battery. The electrolyte concentration is low, and the corrosion effect on the plate is weak. The concentration is uniform and there is no delamination of electrolyte.
Working principle
The performance of the colloidal lead-acid battery is better than that of the valve-controlled sealed lead-acid battery. The colloidal lead-acid battery has the advantages of stable performance, high reliability, long service life, strong adaptability to the ambient temperature (high and low temperature), strong ability to withstand long-term discharge, cyclic discharge, deep discharge and large current discharge, and self-protection of overcharge and overdischarge.
The domestic colloidal lead-acid battery used for electric bicycles is filled by vacuum in the AGM separator, and the silica gel and sulfuric acid solution are poured between the positive and negative plates of the battery. Colloidal lead-acid batteries can not be used in the initial oxygen cycle, this is because the colloid is surrounded by positive and negative plates, the oxygen generated above the positive plate can not be diffused to the negative plate, can not be achieved with the active substance lead reduction on the negative plate, can only be discharged by the exhaust valve, consistent with the liquid-rich battery.
After the colloidal lead-acid battery is used for a period of time, the colloid begins to dry and shrink, resulting in cracks, and oxygen is circulated directly to the negative plate through the cracks. The exhaust valve is no longer often opened, the colloidal lead-acid battery is close to the seal work, and the water loss is very little. Therefore, for the main failure of electric bicycle batteries is the mechanism of water loss, the use of colloidal lead-acid batteries can obtain very good results. Colloidal electrolyte is the sulfuric acid electrolyte solidified into a colloidal substance by adding a gel agent to the electrolyte, usually colloidal electrolyte is also added with colloidal stabilizer and capacitator, some colloidal formulations are also added to delay colloidal solidification and delay agent, in order to facilitate colloidal filling.
Performance characteristics
1, fumed silica preparation of high-quality colloids, electrolyte distribution is uniform, there is no acid stratification phenomenon.
2, the electrolyte is a gel fixed state, no flow, no leakage, so that each part of the plate reacts evenly.
3, the use of tight assembly technology, with excellent high rate discharge performance.
4, excessive electrolyte, battery heat capacity is large, heat dissipation capacity is strong, wide operating temperature range.
5, all the use of high-purity raw materials, battery self-discharge is very small.
6, the use of gas recombination technology, the battery has a very high sealing reaction efficiency, no acid fog precipitation, safety and environmental protection, no pollution.
7, the use of special design and highly reliable sealing technology to ensure that the battery sealed, safe and reliable use.
Scope of application
1. Communication system: switch, microwave station, mobile base station, data center, radio and broadcasting station.
2. Power plants and transmission and transformation systems;
3. Solar and wind power systems
4. Signal system and emergency lighting system
5, EPS and UPS system
