Introduction of OPzV battery
OPzV solid state lead battery is also known as OPzV sealed tubular solid state battery. OPzV is German abbreviation: O-Ortsfest (solid state), Pz-PanZerplate (tubular plate), V-Verschlossen (seal). The abbreviation of OPzV comes from Sonnenschenin (Germany Sunshine).
Opzv solid-state lead battery has independent intellectual property rights. The gas-phase nano silica gel is used as the electrolyte material, and the cathode adopts a tubular structure. It is suitable for safe energy storage and standby time of 10 minutes to 120 hours.
OPzV solid state lead battery is suitable for the renewable energy storage system in the environment with large temperature difference, unstable power grid or long-term power shortage. OPzV solid state lead battery allows users to have more autonomy, allowing the battery to be installed on the cabinet or rack, even next to office equipment. Thus, the space utilization rate is improved, and the installation and maintenance costs are reduced.
1、 Security features
(1) Battery case: OPzV solid lead battery is made of ABS material with flame retardant grade, which is non combustible;
(2) Separator: PVC-SiO2/PE-SiO2 or phenolic resin partition is used to inhibit internal combustion;
(3) Electrolyte: nano fumed silica is used as electrolyte;
(4) Terminals: tin plated red copper core with low resistance. The pole is sealed to avoid leakage of the battery pole.
(5) Polar plate: the positive grid is made of lead calcium tin alloy, which is diecasted under 10MPa pressure.
2、 Charging characteristics
(1) During float charging, constant voltage 2.25V/cell (set value at 20 ℃) or current below 0.002C shall be used for continuous charging. When the temperature is below 5 ℃ or above 35 ℃, the temperature compensation coefficient is - 3mV/cell/℃ (based on 20 ℃).
(2) During balanced charging, constant voltage 2.30-2.35V/cell (set value at 20 ℃) shall be used for charging. When the temperature is below 5 ℃ or above 35 ℃, the temperature compensation coefficient is - 4 mV/single grid/℃ (based on 20 ℃).
(3) The maximum initial charging current is 0.5C, the intermediate charging current is 0.15C, and the final charging current is 0.05C. The best charging current is recommended to be 0.25C.
(4) The charging capacity shall be set at 100%~105% of the discharge capacity, but it shall be set at 105%~110% when the ambient temperature is below 5 ℃.
(5) The lower the temperature (below 5 ℃), the longer the charging time shall be.
(6) The intelligent charging mode is adopted to effectively control the charging voltage, charging current and charging time.
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