At this stage, the mainstream technology in the market is still dominated by lead-acid battery technology, nickel-hydrogen battery technology, fuel cell technology and lithium battery technology. Lead-acid batteries, lead-acid batteries have the longest application history and the most mature technology, and are the batteries with the lowest cost and price.
Nickel-metal hydride batteries, nickel-metal hydride (Ni/MH) batteries have good resistance to overcharge and overdischarge, there is no problem of heavy metal pollution, and there will be no increase or decrease of electrolyte during the production process, which can achieve sealed design, Maintenance free. Compared with lead-acid batteries and nickel-cadmium batteries, nickel-metal hydride batteries have higher specific energy, specific power and cycle life.
A fuel cell is also a power generation device that converts chemical energy in fuel and oxidant directly into electrical energy. The fuel and air are fed separately into the fuel cell, and electricity is produced. From the outside, it has positive and negative electrodes and electrolytes, like a battery, but in essence it cannot "storage electricity" and is often a "thermal power plant".
lithium battery. Lithium-ion power batteries for vehicles should be developed under the premise of disposable lithium batteries, which is the main direction of research and development of batteries for pure electric vehicles at this stage. Lithium-ion batteries have many advantages such as no memory, low self-discharge rate, environmental protection, high specific energy, high specific power, etc., and are the potential vehicle batteries sought after by R&D institutions and car manufacturers after nickel-metal hydride batteries.
The difference between power battery and ordinary battery
1. Different output power of charge and discharge
A 4200mAh power battery can discharge the battery capacity in just a few minutes, but ordinary batteries can‘t do it at all, so the charging and discharging capacity of ordinary batteries is completely incomparable to that of power batteries. The biggest difference between power battery and ordinary battery is that its charge and discharge output power is large and its specific energy is high. Since traction batteries are mainly used for vehicle energy supply, they have higher charge and discharge output power than ordinary batteries.
2. Different application fields
The batteries that provide driving traction for new energy electric vehicles are called power batteries, which mainly include traditional lead-acid batteries, nickel-metal hydride batteries and their emerging lithium-ion power lithium batteries. Automobiles) and their energy-based power batteries (pure electric vehicles); lithium batteries used in communication products such as smart phones and computer notebooks are generally referred to as lithium batteries to distinguish them from power batteries used in new energy electric vehicles.
3. Different essential features
Power batteries usually refer to batteries that provide traction for transportation, usually compared to batteries that provide energy for portable electronic devices; and ordinary batteries are also a kind of lithium metal or lithium alloy as the negative electrode material, using non-aqueous electrolyte. Solution disposable batteries, and rechargeable batteries Li-ion and Li-ion polymer batteries are not the same.
4. Different battery capacity
In the case of all new batteries, use a discharge meter to test the battery capacity. Usually, the capacity of the power battery is about 1000-1500mAh; while the capacity of the ordinary battery is above 2000mAh, and some can reach 3400mAh.
The above is the meaning of power battery, the difference between power battery and ordinary battery, if you still have related questions,
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