Understand the basic knowledge of battery power
Understand the basic knowledge of battery power
The lead on the lead-acid battery plate is converted to lead dioxide, and the lead on the positive plate is converted to sponge-like lead, but the manufacturer converts all the raw materials into The time for specific chemical substances is relatively limited. Therefore, the national industry standard requires that the capacity of a new rechargeable battery should be above 90%. Only in the following normal applications, the capacity will gradually become normal. After installation The 2-year rule is 100%.
For example, one of the typical specifications of small and medium-sized rechargeable batteries used for UPS is l2v, 6ah/2ohv, which is defined as the output AC voltage l2v, the client volume is 6ah, and the charging and discharging speed is 20 hours. The actual implication is: the output AC voltage l2v rechargeable battery is set to be charged and discharged stably at 20h, until the output working voltage is reduced from l2v, the total safety time should be 6ah.
The industrial production of rechargeable batteries in my country, Japan and France uses a 10-hour speed (commonly known as c10), and the industrial production of rechargeable batteries in the UK uses 8 hours (commonly referred to as c8). In specific applications, the charge-discharge rate is not equal to the regulated volume charge-discharge rate. When the specific charge-discharge rate exceeds the client volume charge-discharge rate, the specific output volume is lower than the client volume.
my country’s power engineering and postal express specifications, 10-hour speed rechargeable battery, when using 1-hour speed charge and discharge, its volume is 55% of the client volume. Japanese industry standard 2v/10 hour speed rechargeable battery, 1 hour speed capacity is 6v, 12v, 10 hour speed rechargeable battery, 1 hour speed capacity is. 20 hours rechargeable battery, 10 hours capacity, 1 hour capacity.
There are two relations for the number of battery cycles: one is for deep-cycle use, and the other is for floating charge. The total number of rechargeable batteries used in deep-cycle systems should be used to express their service life. The service life of the rechargeable battery used in the deep battery charging cycle system exceeds 1200 times, and the floating charge service life reaches 10-20 years. When the battery has only 80% capacity, the service life stops.
The specific use period is very different from the design concept use period, which lies in the damage of the raw water of the rechargeable battery. When the external standards such as temperature, battery charging working voltage, charging and discharging depth exceed the design concept, the specific use period will be far less than the design concept service life, and the specific application work capacity will be less than the design concept work capacity.
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