According to data from the Ministry of Industry and Information Technology (MIIT), by the end of 2019, China had a total of 8.41 million mobile communication base stations. The huge number of base stations supports China’s fast-growing mobile internet industry and brings convenience to our work and life.
The battery pack is an important part of the uninterrupted power supply of the DC system for the communication base stations. Lead-acid batteries have the largest market share and the widest range of use among chemical batteries, especially in applications such as starting and large energy storage, and are difficult to be replaced by other new batteries in the longer term.
As a secondary power source with high safety, high resource regeneration rate and wide temperature range, lead-acid batteries are driven by the market and continue to grow at a high rate, and lead-acid battery casing materials are also of great interest. What material is the lead-acid battery casing?
The lead-acid battery shell has to withstand heavy pressure, withstand oxidation, withstand corrosion and resist high temperatures.
Because.
1, lead-acid batteries use a high specific gravity of lead (specific gravity: 11.3), so that the shell material does not have a certain pressure-bearing capacity is not possible.
2, the lead-acid battery internal active material in the energy conversion process, there is oxidation reaction, so the shell material needs to withstand oxidation.
3、The electrolyte of lead-acid battery is dilute sulphuric acid solution, and the corrosiveness of sulphuric acid is very strong, so the shell material must be able to withstand corrosion.
4, lead-acid battery in the charging process to produce part of the heat, the use of the environment may also be very high temperature, such as near the engine of the car, the temperature is about 70 degrees, such a high temperature, as the shell material must ensure that no deformation.
So, what are the lead-acid battery casing materials that must also meet this requirement?
Flame-retardant ABS material for lead-acid battery casings, which is.
has a high flame retardant efficiency, giving the composite material good self-extinguishing or flame retardant properties, meeting UL94 standards.
has good heat resistance and is not easily bulged at high temperatures when injection moulded into the shell.
Good flowability, not easy to appear silver lines or air marks in injection moulding, good dimensional stability and good air tightness.
Good impact resistance, low temperature environment impact does not crack.
Special design of the formula, good heat and glue seal effect.
The material does not contain cadmium, chromium and other harmful toxic heavy metals, the production and application process will not cause any pollution to the environment, in line with ROHS certification requirements.
We hope that the environmentally friendly and non-polluting modified plastic pellets will improve the environment around us and help realise our common “green dream”, and we look forward to the “new connection and new speed” from the world’s highest peak 5G signal to the accelerated development of new infrastructure. We look forward to a new speed in industrial transformation and smart upgrading in our country!