What are the classifications of batteries in current new energy vehicles?
What are the classifications of batteries in current new energy vehicles?
New Energy vehicles have now become With the mainstream trend of automobiles, there are gradually more and more green brand cars on the road. The most important component of new energy vehicles is naturally the battery. Do you know all the mainstream car batteries now?
1. Fuel cell
The fuel cell is a non-combustion electrochemical energy conversion device. Continuously converts the chemical energy of hydrogen (fuels such as hydrogen) and oxygen into electrical energy.
The operating principle is that H2 is oxidized to H+ and e- under the action of the anodic catalyst. H+ reaches the anode through the exchange membraneproton generator, reacts with O2 at the cathode to generate water, and e. - reaches the cathode through the external circuit, continuously. The continued reaction generates electric current.
Although fuel cells have the word "battery", they are not an energy storage device in the traditional sense, but an energy production device. This is the biggest difference between fuel cells and traditional batteries.
2. Lithium batteries
Traditional lead-acid batteries, nickel-cadmium batteries, and nickel-metal hydride batteries are relatively mature in terms of technology, but they are used in cars because electric batteries have bigger problems. At present, more and more automobile manufacturers choose to use lithium batteries as power batteries for new energy vehicles.
The beatsLithium metal series generally use manganese dioxide as the positive electrode material, lithium metal or its metal alloy as the negative electrode material, and use non-aqueous electrolyte solution. The main materials of lithium batteries include: positive electrode material, negative electrode material, separator and electrolyte.
3. Ternary lithium battery
Advantages: Ternary lithium ion battery has high energy density, long life, and is not afraid of low temperatures; Disadvantages: high temperature. Insufficient stability.
Goal: Purely electric vehicles with required cruising range, which is the dominant direction and suitable for Nordic weather conditions. The battery is more stable at low temperatures.
What types of wastewater are produced by lithium battery recycling?What types of wastewater are produced by lithium battery recycling?h3>
What to do if the battery life of new energy electric vehicles is reduced by half in winter< /p>
We must first understand the low temperature environment. It is very deadly to batteries. Lithium iron phosphate batteries, blade batteries, and ternary lithium batteries commonly used in electric vehicles will reduce their activity as the temperature decreases. The specific manifestation is that the output potential of the battery is reduced and the ability to produce large current is weakened. At the same time, the SEI film covering the negative electrode of the battery is a passivation film produced when the electrolyte and the negative electrode material come into contact for the first time. This film can ensure that the negative electrode of the battery is not excessively corroded by the material. electrolyte, and at the same time allows lithium ions to enter andexit smoothly. As the temperature decreases, the activity of the electrolyte decreases and the resistance inside the battery increases, making it more difficult for lithium ions to pass through the SEI membrane.
At the same time, the use of air conditioners in winter will also cause the range of electric vehicles to decrease. Currently, there are generally two types of electric vehicle air conditioning configurations on the market. One is a resistance wire air conditioner, just like the hair dryer we use in our daily life. The other is a heat pump air conditioner, which uses a compressor to exchange heat from the outside environment to the car. Among them, the cost of resistance wire air conditioners is lower, so most models use this method. However, this method uses more power and is more likely to overconsume battery power.
In addition, the cold environment in winter will also make the vehicle tires stiffer and the rubber lose its elasticity. As a result, the vehicle must consume more energy to move forward, which will cause battery power to decrease further. In fact, not only electric vehicles, but also the higher fuel consumption of fuel vehicles in winter have a lot to do with tire hardening. The rubber rebounds slowly, and the elastic potential energy is not completely released, so this part of the energy will be reflected in the energy consumption.
In fact, whatever the brand of electric vehicle, its power will decrease more or less in winter. What car owners should do is plan their trips better and pay attention to the remaining power of their vehicles in a timely manner compared to summer. If there are charging stations inlow in the community or in the company parking lot, try to recharge when about 30% power remains, because the range in winter decreases faster than at other times and there is a gap between the the power displayed on the dashboard and the actual power. There is another difference. Everyone should summarize their experience according to their own driving experience and replenish the battery in time.
Hello! Seeing that you asked what kind of wastewater is generated by lithium battery recycling, Zhanqing Environmental Protection Editor will give you the answer. From what I know, different types of wastewater will be produced in the recycling process of lithium batteries, the main ones are high salt, refractory COD, heavy metal containing, P, F, etc. Indeed, the lithium battery recycling process involves many links, such as discharge, disposal.nation of impurities, separation, high temperature melting, extraction, etc. The characteristics of wastewater are not only complex, but also contain a certain degree of toxicity. If not treated properly, it will pollute the environment, thereby threatening human health.
But don't worry too much. Current technology can already effectively treat this wastewater. During the recycling process, the wastewater will be treated through several stages of purification, neutralization, sedimentation and other processes to remove or transform harmful substances, so that the final discharged wastewater meets relevant national standards. Regarding the wastewater generated by the lithium battery recycling industry, there are professional environmental protection companies that can handle it. You can search online to find out.