In renewable energy systems such as solar and wind, batteries need to frequently absorb unstable energy inputs and dynamically adjust their outputs according to grid demand. Traditional full charge and discharge modes will result in rapid battery life degradation.
Advantage of PSoC: By controlling the battery in the intermediate charge interval (e.g. 40-80%), it reduces the stress of deep cycling on the electrode material and extends the service life.
For example, battery cycle life can be increased by more than 30% when PSoC strategy is adopted in energy storage power stations.
2) hybrid electric vehicles with start-stop system
The battery of hybrid electric vehicles needs to respond frequently to acceleration and braking energy recovery, and the power fluctuates drastically. Ordinary lithium batteries are likely to accelerate battery aging under deep charging and discharging.
Adaptability of PSoC: Keep the battery in the 50%-70% range to meet the instantaneous high power demand while avoiding the capacity degradation caused by deep discharge. For example, AGM start stop batteries are designed with PSoC to support shallow charging and discharging cycles, with a lifespan of up to 5 times that of traditional lead-acid batteries .
3) Drones and industrial equipment
Plant protection drones need to be charged and discharged several times for short periods of time during operations, and need to respond quickly to load changes.
Frequent full charge/discharge will largely shorten battery life.
Application of PSoC: by limiting the power range (e.g., 20-80%), the electrode expansion rate is reduced and the cycle stability is improved.
For example, lithium iron phosphate batteries can have a cycle life of more than 2,000 cycles in PSoC mode.
What is the suitable battery for PSoC applications?
1) Lithium iron phosphate battery (LiFePO4 battery)
Ultra long cycle life: supports more than 2000 shallow charge/discharge cycles (SOC 30%-90%)High temperature stability: stable crystal structure, very small battery size change during charge/discharge, suitable for frequent PSoC operation
Safety: high thermal runaway temperature (>270°C), avoiding potential risks of long-term operation under PSoC
2)AGM start-stop battery
Deep cycle tolerance: Adopting adsorption glass fiber separator (AGM), it supports frequent shallow charging and discharging, and the cycle life is up to 4-5 times that of ordinary batteries.
High power discharge: AGM start-stop battery is specially designed instant high power discharge, which can support your high current discharge reuqest
3) Fast charge lead carbon battery(Pb Carbon battery)
Super long life cycle: lead carbon battery adpot advanced activated carbon negative plate technology, the degree of sulfation is reduced by more than 80%, and the cycle life is increased to 2000-3000 cycles (traditional lead-acid batteries are only 300-500 cycles). In PSoC mode (e.g. SOC 30%-70%), the capacity degradation rate of lead-carbon batteries is only 1/5 of that of traditional lead-acid batteries.
Fast recharge and discharge:The bilayer capacitance effect (non Faraday reaction) of activated carbon gives lead-carbon batteries a fast charging and discharging capability.
Comparison of differnt types PSoC battery
How to choose a PSoC battery?
We have made a detailed introduction of PSoC battery as above, but how to choose? It depends on your application, normally the lead carbon battery is the most popular battery for PSoC battery, as lead carbon battery is specially designed for PSoC applications, lead carbon battery is so outstanding with a super long cyclic life, fast recharge and discharge capability, low cost and come be connected in series to get a high voltage and capacity. Although LiFePO4 lithium ion battery is long life, but if you want to get a high voltage, the battery banks should be customized and cost will be very high.
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