The pure lead storage battery, as the proportion of the lead, the proportion of lead is higher, and in a high cost-effective chemical power supply, it has been born in a lead-acid battery, which is dominant in the current application. However, with the acceleration of the global industrialization, users and the environment also have more expectations for lead-acid batteries (such as high-energy density, high reliability, fast charging receiving performance, high rate discharge performance, low-carbon energy saving, more Low total cost, etc.), and traditional lead-acid battery technology has gradually been stretched in front of these new technologies.In addition, conventional lead-acid batteries are produced in the production of production and improve the mechanical strength, and after the addition of other metals to form alloy structures, the alloy is formed, and the processing is increased. On the other hand, it also causes the battery electrode plate to accelerate during use, and the self-discharge ratio of the battery is increased, and there is a problem with the water loss during use, and the internal resistance is large. Based on the above demand and problem, it does not add any alloy's pure lead, TPPL technology to express it.
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The pure-lead thin pad battery was originally successfully developed by the US Gates, and the earliest development direction is a wound cylindrical battery applied to the air equipment power supply system. Due to the high-purity metal lead plate grid (purity is about 99.99 %) Soft, the manufacturing process is very difficult, and the technology has not been promoted. Due to the significant advantage of pure lead technology, some foreign manufacturers have invested a lot of energy, combined with the application conditions of the battery, and the electrochemical system for the pure lead thin plate is also optimized, and the charge and discharge acceptance is also optimized. Ability, through special production processes and use fully automated tooling robots to produce a plate-type pure lead-free plate battery suitable for industrial applications and successfully commercialize them.
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TPPL technology as a new technology in chemical power supplies, which is different from the colloidal (GEL) technology of traditional lead-acid batteries, nor is it equivalent to AGM (ABSORBEDGLASSMAT) technology of ordinary lead-acid batteries; pure-lead masses Basic materials for batteries (including housing), structural design, electrochemical performance, manufacturing process and quality control have great differences with traditional products, reflecting the highest level of chemical power technology development.
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1 Advantages of pure lead masses
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(1) Pure lead grid
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The pure lead r gate typically uses high purity original ecologically lead and then rolled, stamped into a positive and negative plate gate lead strip, and the traditional gravity cast type lead calcium tin alloy plate is different, the crystal of the pure lead plate grid The grid is more dense, even more resistant to corrosion under high temperature environments (see Figure 1); simultaneous compared to the alloy plate gate, the hydrogen is higher, more effectively reducing the battery in the charging process.
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(2) Ultra-thin polar plate
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With respect to the conventional lead calcium alloy battery polar plate, the thickness of the pure lead pole plate battery polar plate is only about 1 mm (see Table 1), and more plates can be placed in the same space, and the polar plate reaction is improved. The total area (as shown in Figure 2), so that the performance of the pure lead battery is extremely excellent in performance during rapid charging and high power discharge.
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(3) Polar prevention short circuit design
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Since the pure lead-thin pole battery polar plate is very thin, the purity is high, the plate itself is soft, easy to deform; the pure lead thin plate is a special structural design, and the surface of the plate increases acid and heat resistant short-circuit anti-off materials. On the one hand, it is ensured that the movement of the ionic ion in the electrolyte is effective in avoiding the ultra-thin plates to cause short circuits, and the active substance of the filled feed grid is collapsed under the large current load.
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(4) High-intensity flame retardant housing Since the number of pure lead-thin pole plates is large, the internal mass pressure is high, and the pure lead-thin pole battery has a long working life, common type (or modified) ABS, PP plastic housing cannot meet the demand for polar life, so that the pure lead thinket battery has a modified PPO (modifiedPoly-Phenyleneoxide) plastic with higher strength, halogen-free high flame retardation, to ensure the outer casing of the battery. Within the normal life cycle of the entire battery, the material has no degradation, and the performance has no decay, and is not deformation in use. According to the test, the pure lead thinket battery made of modified PPO material housing is used in -40 to + 65 ¡ã C.
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Under the same wall thickness, air pressure, area, etc., the characteristics of each housing material are shown in Table 2.
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(5) Lower self-discharge rate
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Due to the high purity material inside the pure lead-thin pole battery, the internal resistance of the alloy sheet is large, and the requirements for charging every 3 to 6 months, in normal temperature, pure lead The battery can stand for more than two years (see Figure 3).
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(6) Large current charge recipients compared to traditional batteries, the number of pure lead poles battery poles, more reaction area, small internal resistance, and can accept charging current up to 10C10. For completely discharged batteries, when the charging current value of 1C10 is used, 100% of the battery can be filled within 2 hours; even if the current flow value of 0.25c10 commonly used in the telecom industry is also charged within 6 hours, The charging time is less than one-third of the traditional valve-controlled lead-acid battery (see Figure 4).
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(7) Excellent high, low temperature performance
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The pure-lead thin electrode plate has a larger polar specific surface area than the ordinary battery, which greatly reduces the internal resistance, so that the battery can also perform normal charging at low temperatures. Due to its poverty-specific design, there is no freezing of liquid acid at low temperatures, and there is no problem that the output current has a sharp decrease in the low temperature reduction; at high temperatures, high temperature resistance and super high charging Acceptability ensures that the battery has a long service life (see Figure 5).
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As the battery product represented by the advanced technology, the pure-lead thin polar plate battery is not available in its traditional battery, and the life of the traditional lead-acid battery is short, uniform and fast charge and discharge. Floating, cycle uses simultaneous problems and other issues, etc.
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According to the survey, in the North American Switch Data Center, Latisys Data Center, DigitalRealityTrust Data Center, Hong Kong Airport, Hong Kong Metro, Guangzhou Metro and other users, there are a large number of pure-lead masses and other users. The tracking test found that the uniformity of the pure-lead pole plate batteries is well used, and the temperature range is wide, and the intermittent charging is used. There is no foundation of battery deformation, leakage liquid, etc., the user is widely evaluated. Table 3 shows the random spot check data (12V100AH) of a subway in Guangdong.
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2 Insufficient Phase Lead Mode Plate Technology
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Although the pure lead-thin pole battery has many traditional chemical power supply unparalleled advantages, there are still some difficulties, such as the purification requirements of raw materials, mainly dependent automation equipment, and the difficulty of process, leading to its technology. Manufacturers cannot be able to master quickly.
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3 conclude
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With the development of society, all industry segmented markets are increasingly specific, and the reliability, safety and stability requirements of power systems (power supply systems) are more important, and the importance of batteries is particularly important. Under extremely common UPS applications, most of the batteries are short-lived current (power) discharge, shallow cycle load mode, traditional valve-controlled lead-acid battery and other chemical power supply due to product characteristics, Safety, maintenance amount, etc. Causes cannot be fully compliant and need to meet the needs, and the pure lead masked battery developed by the UPS power system application is high power, long floating life, fast charge and discharge, and use temperature range wide. The advantages such as uniformity have provided a perfect and effective solution for the field of high reliable demand for power supplies; The field is very much like Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
