EV battery activation method

Supercapacitors on electric cars are redundant! For supercapacitors to do their job, they must have a voltage drop, but a typical unmodified streetcar will not have much of a voltage drop when it accelerates rapidly, and a bad battery will have a maximum of 10V. And supercapacitors have to be big to be effective, and there's very little room for them because they're so big. How does an supercapacitors connect to a battery

This is a good idea, but it would be better to simply increase the capacity of the battery or add another set of batteries in parallel.

How does supercapacitor connect to a battery

If the effect is not good then on the power lithium battery, high rate discharge hundreds of thousands of ampere current, do not believe that the electric car is not enough.

A method of dissolving large lead sulphate crystals by negative resistance is through high current charge.

It is found in the experiment that this kind of elimination vulcanization can only obtain temporary effect, and will bring aggravating water loss and positive plate softening problem in the process of elimination vulcanization, which will cause serious damage to battery life and is not easy to use.

The negative pulse

This method has been applied for more than 30 years. The principle is to add negative pulse in the charging process, which can reduce the temperature rise of the battery. However, the repair effect of "vulcanization" is not obvious, and the repair rate is 20%.

Surfactant

Using chemical method to eliminate lead sulfate crystallization, not only the cost is high, increasing the internal resistance of the battery, but also change the original structure of the electrolyte, the repair period is short, the repair rate is about 45%.

High frequency pulse

Pulse wave was used to convert lead sulfate into reversible lead sulfate with fine crystal size and high electrochemical properties. It is better than negative pulse. But because its repair time is long, need dozens of hours above, even a week's time, the efficiency is lower, bad to the serious "sulfide" accumulator repair, but the technology is simple, there are many manufacturers reuse at present, the market price is about 2000 yuan.

Combined resonant pulses

Reasonable control on the leading edge of the pulse, using pulse charging higher harmonic and the lead sulfate crystallization of resonance, the method of sulfide in the repair process to eliminate battery, using this method can give the battery repair, repair of high efficiency and little damage to the battery. It can reduce greatly the lead-acid battery pollution to the environment, extend battery life, reduce the user from the huge cost, replace the battery so broad prospects. The disadvantage is complex equipment technology, high cost, pulse front control and resonance technology requirements. Market price about -4 (independent 4 charge and release) for 2200-3800 yuan, -20 (independent 20 charge and release) for 8500-15000 yuan.

The principle and method of eliminating vulcanization by compound resonance method

Although we know that the main way to prevent battery vulcanization is to prevent the battery from not timely charging and over discharge, but in practical use, this phenomenon is often occur. This has previously been considered "irreversible". The traditional method is more complex, using large current charging; Surfactant replacement; These methods have a low success rate of repair and have some negative effects. The current method is a composite pulse repair method, which can be "irreversible" to "reversible", and basically no damage to the battery plate. This is a major breakthrough in lead-acid batteries. The principle of pulse repair is complicated. First of all, any crystal has a resonant frequency after the molecular structure is determined, and the resonant frequency depends on the size of the crystal. The larger the crystal size, the lower the resonant frequency. If the charging front adopts steep pulse, the frequency analysis with Fourier series can be used to know that the pulse will produce rich harmonic components, and the low-frequency part has a large amplitude, while the high-frequency part has a small amplitude. In this way, the crystallization energy of lead sulfate is large, and that of lead sulfate is small. As a result, the crystal resonance amplitude of lead sulfate is large, and it is easier to dissolve than that of lead sulfate during positive pulse charging. This is called "crushing" large crystals of lead sulfate. By properly controlling the pulse current value and charging the positive plate with a small current density, the damage to the positive plate will not be formed basically. For sealed batteries, the instantaneous charging voltage enables the oxygen generated by the electrode plate to be absorbed on the negative plate through oxygen circulation, so that the battery will not lose water. So this is a "loss-free" fix that differs from other fixes.

Using high frequency positive and negative pulse generator, battery constantly produce high and low frequency pulse, one may have the condition to dissolve the big lead sulfate, the second is pulse disturbance, destroyed the condition of big lead sulfate continue to grow, this method overcome the limitations of the previous repair technology, has the quickness, about 8 to 12 hours, repair of high efficiency, less consumption, does not cause the battery water loss, positive plate softening and the advantages of changing the original structure of electrolyte, lead-acid battery repair effect of severe sulfide is 3 ~ 4 times in the past, repair rate is above 90%, the application of this technology reduces the number of discarded batteries.

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