There are many kinds of energy, and various kinds of energy can be converted to each other. Our usual hydroelectric power, wind power, and solar power all utilize this principle, converting the energy produced by water or wind driving a turbine, or the heat produced by the sun, into electricity for everyone’s use.
Principle of Battery Energy Storage
Each battery contains positive and negative poles, which are connected by an electrolyte in the middle. When the battery is connected to an external circuit, a closed loop is formed, where the positive pole undergoes a reduction reaction and gains electrons, and the negative pole undergoes an oxidation reaction and loses electrons, and an electric current is formed in the external circuit to provide electricity for the appliances. When connected to the power supply, the opposite reaction occurs, the positive pole undergoes an oxidation reaction and loses electrons, the negative pole undergoes a reduction reaction and gets electrons, the current flows through the battery, completing the charging, and the electrical energy becomes chemical energy to be stored, and then releases it through the reaction to be completed next time when it is discharged, and the energy is stored and released in the continuous reaction. This is only most of the battery energy storage principle, some batteries also through the movement of ions to complete the conversion of electrical energy.
Different energy storage characteristics of several types of batteries
Lithium Battery
Lithium batteries have a high energy density, can store more energy in a smaller volume or weight, and have a longer service lifespan, strong cycle durability and lower self-discharge rate, in the same energy storage size, lithium batteries tend to be lighter and smaller, is a better choice for energy storage.
Lead-acid Battery
Lead-acid battery energy storage technology is more mature, with higher reliability, can provide stable current and voltage, has a lower cost and a strong ability to adapt to the environment, but his energy density is smaller, the energy stored per unit volume or weight is lower.
Manganese-zinc dry cell
This is a kind of primary battery for daily use, although it can not be charged, but it is widely used in life, its energy storage is more stable, with better high-current discharge ability and good leakage prevention ability, is widely used in a variety of small electrical appliances.
Solid State Battery
As an emerging battery, solid-state batteries have a greater energy density, have a strong range, can realize rapid charging, will also have a stronger security, but the raw material cost is higher, the battery price is more expensive, and currently there is no large-scale popularization.
The benefits of battery energy storage
1. because of the battery, electricity can be stored, rather than as before in the air gradually disappear, waste, which greatly improves the utilization of energy, reducing the waste of energy.
2. the emergence of the battery has brought us great convenience, the battery has become a portable mobile energy, even when camping in the wild or community blackout, he can be used as a backup power supply, to provide power for your family, do not have to be as before just use candles or oil lamps to light, it is easy to appear safety hazards.
3. the battery also makes our life easier, before we need to connect some of our appliances to the wire or charge for a long time, but now, just need to put a battery, appliances can work normally, even if the power is gone, you can immediately replace the next battery, will not delay your use.
4. for those who use solar power users, the battery also for them to solve the problem of power generation and power imbalance, can be generated during the day to store the electricity to be used at night, solving the problem of supply and demand imbalance.
The future of battery energy storage
Nowadays, with the rise of clean energy such as wind power, hydropower and solar power system, battery energy storage has become a very important issue.
1. today’s scientists are also trying to find more efficient and safe battery energy storage, from the beginning of the disposable batteries to the current secondary rechargeable batteries, from the initial lead-acid batteries to the current lithium batteries, the performance of the battery is becoming more and more perfect.
2. in the next ten years, with the development of clean energy, the battery market will be very huge, the future of the battery will be very promising. We use batteries in large quantities to store this power, and in the future we will also need more batteries to enter the energy market to provide a strong guarantee for new energy.
Conclusion
The battery relies on chemical energy to store energy, through the energy conversion of the way to make energy storage becomes sustainable, but also to make the use of electricity has become more secure and convenient, battery energy storage is convenient for our lives, but also will play a positive role in the development of our electrical energy.
