(1) Development plan for low temperature batteryFrom various aspects that are conducive to low temperature and discharge function, the battery capacity, component, etc. satisfy the requirements, as far as possible, the discharge function when the battery is low-temperature at -40 ¡ã C, and the battery is used to operate. The specific scheme is as follows:
1 From the positive electrode plate, adjust the PB-CA-Sn-Al alloy ingredient, add SN content to 1.2% to 1.5% to add grid mechanical strength and corrosion resistance. Add 0.1% AG to the alloy, which can be added to the plate-resistant treatment, which is conducive to improving the deep cycle discharge cycle of the battery. The radioactive plate gate structure is selected, moving the middle portion of the extremely ear magnetic plate, the thickness of the polar plate, and the number of plates are added, and the battery large current discharge is improved.
2 In order to extend the amount of battery life, advance the low temperature high current discharge, and select the high-density lead paste formula to add a conductive agent in the amount of the lead paste. The larger devices, internalization, and further advance the battery to use life. The participation of the conductive additive in the positive electrode can reduce the electrical resistance, the battery low temperature and discharge function is significantly advanced; the transform power of the positive electrode active material is advanced, the positive electrode plate is more likely to pass; ensure that the high pore rate of the positive electrode plate is more beneficial The liquid toward the electrode plate is scattered, and the active material utilization is advanced;
3 Adding a share of the advanced inletter in the negative electrode, the added share of the humic acid, more useful to avoid the composition of the pulverate passivation layer, and advance the battery low temperature discharge capacity;
4 The participation of the activated carbon in the negative electrode plate, ensures the high porosity of the negative plate, more beneficial to the internal dispersion of the acid solution, and advance the active material utilization;
5 The number of positive and negative electrode sheets is added in the pole group, and the plate is moving the surface area, ensuring that the battery has a higher discharge capacity;
6 Use high-porosity, low internal resistance AGM high-quality partition, the ion is excellent to pass the ion, and then ensure that the battery excellent low temperature is
7 use high purity, high solids nano silica sol and mixed rubber electrolyte of the Na2SO4 additive dilute H2SO4, so that the electrolyte rubber is uniform, no layers, and the battery is charged after the battery is over-discharged, ensuring the use of the battery.
(2) The primary technical objective of the primary technical objective of low temperature batteries is shown in Table 1.
Low temperature battery production technology indicator
(3) Low temperature battery and general battery function comparison low temperature formula
By detecting, the battery made of the present invention is made of the ultra-low temperature and negative electrode active material formulation, under ultra-low temperature conditions (-40 ¡ã C), and the discharge capacity is adjusted to 50% or more of the rated capacity.
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