Colloidal batteries

The colloidal lead-acid battery is an improvement on the ordinary lead-acid battery with liquid electrolyte, replacing the sulphuric acid electrolyte with a colloidal electrolyte, which improves safety, storage capacity, discharge performance and service life compared to the ordinary battery.

The gel electrolyte is used in lead-acid batteries, and there is no free liquid inside the battery, so the electrolyte has a large capacity in the same volume, and the heat dissipation capacity is high, which can avoid the thermal runaway phenomenon of general batteries.

Colloidal battery working principle

The performance of the colloidal lead-acid battery is better than that of the valve regulated sealed lead-acid battery. The colloidal lead-acid battery has the advantages of stable performance, high reliability, long service life, adaptability to ambient temperature (high and low temperature), ability to withstand long time discharge, cycle discharge, deep discharge and high current discharge, self-protection from over-charging and over-discharge, etc.

Domestic colloidal lead-acid batteries for electric bicycles are filled with silica gel and sulphuric acid solution between the positive and negative plates of the battery through vacuum filling in the AGM partition. This is because the gel surrounds both the positive and negative plates and the oxygen produced on the positive plate cannot diffuse to the negative plate and cannot be reduced to the active material lead on the negative plate, which can only be discharged by the exhaust valve, in line with the liquid-rich battery.

Differences between colloidal and lead-acid batteries

Colloidal battery performance characteristics

1、Fumed silica formulates high quality colloid, the electrolyte is evenly distributed and there is no acid stratification phenomenon.
2、The electrolyte is fixed in a gel state, no flow, no leakage and uniform reaction of all parts of the pole plate.
3、Adopting tight assembly technology, with excellent high rate discharge performance.
4、Excess electrolyte, large thermal capacity of the battery, strong thermal dissipation ability, wide working temperature range.
5、All adopt high purity raw materials, the battery self-discharge is extremely small.
6、Adopting gas recombination technology, the battery has extremely high sealing reaction efficiency, no acid mist precipitation, safe and environmental protection, no pollution.
7、Adopting special design and highly reliable sealing technology to ensure that the battery is sealed, safe and reliable to use.

Colloidal battery application range

1、Communication system: switchboard, microwave station, mobile base station, data centre, radio and broadcasting station.
2、Power plants and power transmission systems.
3、Solar and wind power generation systems
4、Signal systems and emergency lighting systems
5、EPS and UPS systems

Difference between colloidal and lead-acid batteries

Lead-acid batteries

A battery whose electrodes are mainly made of lead and its oxides and whose electrolyte is a sulphuric acid solution. In the discharged state, the main component of the positive electrode is lead dioxide and the negative electrode is lead; in the charged state, the main component of both positive and negative electrodes is lead sulphate. It is divided into exhaust type battery and maintenance-free lead-acid battery.

Performance characteristics of lead-acid battery.

1、Safe and sealed
In normal operation, the electrolyte will not leak out from the terminals or the shell of the battery.
2、No free acid
A special liquid absorbing partition keeps the acid inside and there is no free acid inside the battery, so the battery can be placed in any position.
3、Drainage system
When the internal pressure of the battery exceeds the normal level, the VRLA (short for “Valve-Regulated LeadAcid Battery”) will release the excess gas and automatically reseal the battery to ensure that there is no excess gas in the battery.
4. Simple maintenance
Thanks to the unique gas compound system, the gas produced is converted into water, so there is no need to add water during the use of the battery.
5. Long service life
With the use of lead-calcium alloy bar plate with corrosion-resistant structure, the battery can be used for 10-15 years on a floating charge.
6、Stable quality and high reliability
Adopting advanced production process and strict quality control system, the quality of the battery is stable and the performance is reliable. Voltage, capacity and sealing are 100% tested on line.