What is the definition of a battery? What kind of battery is the battery

The device that converts chemical energy into electrical energy is called a chemical battery, which is generally referred to as a battery. After discharge, the internal active material can be regenerated by charging - storing electrical energy as chemical energy; When an electric discharge is required, the chemical energy is converted into electrical energy again. This type of battery is called a storage battery, also known as a secondary battery or lead-acid battery.

The so-called storage battery is an electrochemical device that stores chemical energy and emits electrical energy when necessary.

Principles of chemistry. The equation is as follows:

Total reaction: Pb(S) + PBO2(S) + 2H2SO4 (AQ) invertible sign 2PBSO4 (S) + 2H2O(L).

When discharged: negative PB(S)-2E-+SO42-(AQ)=PBSO4(S).

Positive PBO2(S)+2E-+SO42-(AQ)+4H+(AQ)=PBSo4(S)+2H2O(L).

Total PB(S)+PBO2(S)+2H2SO4(AQ)=2PBSO4(S)+2H2O(L).

When charging the electrolytic cell.

Cathode PBSO4(S)+2E-=PB(S)+SO42-(AQ).

Anode PBSO4(S)+2H2O(L)-2E-=PBO2(S)+SO42-(AQ)+4H+(A

A battery [1] is a type of battery, which can store limited electrical energy and use it in a suitable place. It works by converting chemical energy into electrical energy. It uses a lead plate filled with spongy lead as the negative electrode, a lead plate filled with lead dioxide as the positive electrode, and dilute sulfuric acid as the electrolyte.

When charging, electrical energy is converted into chemical energy, and when discharging, chemical energy is converted into electrical energy. When the battery is discharged, the metal lead is the negative electrode, which undergoes an oxidation reaction and is oxidized to lead sulfate; Lead dioxide is the positive electrode, which undergoes a reduction reaction and is reduced to lead sulfate. When the battery is charged with direct current, lead and lead dioxide are generated at the two poles, respectively.

After the power supply is removed, it returns to its pre-discharge state and forms a chemical cell. Lead-acid batteries are batteries that can be charged and discharged repeatedly, and are called secondary batteries. Its voltage is 2V, and it is usually used in series with three lead-acid batteries in series, and the voltage is 6V.

The car uses 6 [2] lead-acid batteries connected in series to form a 12V battery pack. Lead-acid batteries should be supplemented with distilled water after a period of use, so that the electrolyte remains containing 22 28 dilute sulfuric acid. When discharged, the electrode reacts as:

PBO2 + 4H+ +SO42- +2E- = PBSO4 + 2H2O Negative Reaction: PB+SO42- -2E- = PBSO4 Total Reaction: PBO2 + PB+ 2H2SO4 === 2PBSO4 + 2H2O (the right reaction is discharge, the left reaction is charge).

A battery is a device that converts chemical energy into electrical energy, which is a reversible direct current. Once an external load is connected or a circuit is turned on, its energy conversion process begins. During the re-discharge process, the chemical energy of the battery is converted into electrical energy, and during the charging process, the electrical energy is converted into chemical energy.

A car battery is a device that converts chemical energy into electrical energy and is a reversible DC power source.

The device that converts chemical energy into electrical energy is called a chemical battery, and after discharging, it can regenerate the internal active matter by charging - storing electrical energy as chemical energy; When an electric discharge is required, the chemical energy is converted into electrical energy again. This type of battery is called a battery, also known as a secondary battery or lead-acid battery.

The battery is a kind of battery, also called a battery, which refers to the battery that can continue to be used after being charged after discharge, including lead-acid battery, nickel-iron battery and nickel-cadmium battery. It works by converting chemical energy into electrical energy. Usually the battery refers to the lead-acid battery, that is, a battery that is mainly made of lead and its oxide as the electrode, and sulfuric acid solution as the electrolyte.

A battery is a battery that can be recharged after discharging. There are lead-acid batteries, nickel-iron batteries and nickel-cadmium batteries. The positive electrode of the lead-acid battery is lead dioxide, the negative electrode is lead, and the electrolyte is a dilute sulfuric acid solution.

When discharging (using), the positive and negative electrodes react with sulfuric acid to form lead sulfate, and when the concentration of sulfuric acid solution drops to a certain level, it must be charged. When charging with an external power source, the electrode and solution can be restored to their original state, and they can be used again after charging. 1. Ordinary battery:

The plates of ordinary batteries are composed of lead and lead oxides, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantages are stable voltage and low price; The disadvantages are low specific energy (i.e. the amount of electrical energy stored per kilogram of battery), short service life, and frequent routine maintenance. 2. Dry-charge battery:

The full name is the dry charged lead-acid battery, its main feature is that the negative plate has a high power storage capacity, in a completely dry state, can save the power obtained within two years, when using, only need to add electrolyte, wait for 20-30 minutes can be used. 3. Maintenance-free battery: Due to the advantages of its own structure, the consumption of electrolyte is very small, and there is basically no need to replenish distilled water during the service life.

It also has the characteristics of shock resistance, high temperature resistance, small size, and small self-discharge. The service life is generally twice that of ordinary batteries. There are also two types of maintenance-free batteries on the market:

The first is to add electrolyte at the time of purchase, and no maintenance is required in later use (add refill); The other is that the battery itself has been added with electrolyte and sealed at the factory, and the user cannot add refill liquid at all.

A battery is defined as an electrochemical device that stores chemical energy and emits it when necessary. ）。

A car battery is a device that converts chemical energy into electrical energy and is a reversible DC power source.

After the beginning of winter, the night begins to grow; After the winter solstice, the nights begin to get shorter.

On the day of the beginning of winter, the night is not the longest; On the day of the winter solstice, the night is the longest.

As soon as the winter solstice passes, the extremely long night passes; Since then, the light has grown, and the night has become shorter.

After the beginning of winter, the weather is not the coldest; After the winter solstice, the weather begins to get coldest.

On the day of the beginning of winter, there is still a late autumn in the sky; On the day of the winter solstice, there were no clouds in the sky, and the cold wind was howling.

As soon as the winter solstice passes, the extremely cold and extremely cold weather really arrives; Since then, the number nine cold winters, the snow is fluttering!

The very long and long dark nights all appear in the early winter years, but they are not the coldest times in winter; The dark night is getting shorter and shorter, but it comes in the harsh winter years, and the harsh winter years are the coldest.

This tells you and me that the longest and longest night is not the coldest and most difficult time in your life; But the night is getting shorter, the harsh winter is coming, heavy snow and small snow, big cold and small cold, until January is over, February rises, is the coldest and most difficult season in your life!

This also tells you and me that the longest and longest night is not terrible sometimes; It's the growing light, and sometimes it's really scary!

Author's Statement] This short essay is quite short, and I just want to make one truth, that is: the longest night is not the coldest, so people do not need to be afraid of being attacked by the coldest in the longest night! This short essay was originally intended to be published as a prose poem.

But considering that the language used is so plain, it is not very poetic. Anyway, Reading Wenzhai also allows short articles of more than 300 words to be published, and they are sent as articles.

A battery is a type of battery, and its working principle is to convert chemical energy into electrical energy. Usually, people refer to batteries as lead-acid batteries. That is, a battery mainly made of lead and its oxides, and the electrolyte is a sulfuric acid solution.

Commonly used battery classification and characteristics.

1. Ordinary battery:The plates of ordinary batteries are composed of lead and lead oxides, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantages are stable voltage and low price; The disadvantages are low specific energy (i.e. energy stored per kilogram of battery), short service life and frequent routine maintenance.

2) Dry-charged battery: its full name is dry-charged lead-acid battery, its main feature is that the negative plate has a high power storage capacity, in a completely dry state, it can save the power obtained within two years, when using, only need to add electrolyte, and wait for 20-30 minutes to use.

Accumulators, as the name suggests. A pool of electricity storage. Similar cisterns. Batteries are used to store charge.

The technical parameters of the battery are: volume, discharge current, battery working voltage. The other is the operating temperature, and the model specification.

1. Battery induced electromotive force, open-circuit voltage, and working standard voltage.

2. Volume. Battery volume refers to the total amount of electrical energy stored by the battery, which is indicated by the mark C. A common company is the Pian Hour, commonly known as the Ampere (AH) or MAH (MAH).

3. Internal resistance. The internal resistance of the battery includes the European mother internal resistance and the polarization internal resistance, and the polarization internal resistance includes photocatalytic polarization and concentration polarization.

4. Cycle service life. The battery undergoes a single battery charge and discharge, which is called a cycle (a cycle time). Under a certain discharge standard, the frequency of cycles that the battery can bear before the battery works to a certain volume standard value is called the cycle service life.

5. Kinetic energy. The kinetic energy of the battery refers to the electromagnetic energy that the battery can list under certain discharge rules and regulations, which is generally expressed in watt-hours (Wh).

6. Storage characteristics. During the storage period of the battery, because of the residue in the battery, such as positively charged metal ions, this residue can form a microbattery with the negative active material, resulting in the melting of negative metal materials and the precipitation of radon gas.

1. Capacity: Battery capacity refers to the amount of power stored by the battery, which is represented by the symbol C. The commonly used unit is ampere-hours, abbreviated as ampere-hours (ah) or milliampere-hours (mAh).

2. Internal resistance: The internal resistance of the battery includes ohmic internal resistance and polarization internal resistance, and the polarization internal resistance includes electrochemical polarization and concentration polarization. 3. Cycle life:

The battery undergoes a single charge and discharge, known as a cycle (a cycle). Under certain discharge conditions, the number of cycles that the battery can withstand before working to a certain capacity specified value is called cycle life. <

1. Capacity: Battery capacity refers to the amount of power stored by the battery, which is represented by the symbol C. The commonly used unit is ampere-hours, abbreviated as ampere-hours (ah) or milliampere-hours (mAh).

2. Internal resistance: The internal resistance of the battery includes ohmic internal resistance and polarization internal resistance, and the polarization internal resistance includes electrochemical polarization and concentration polarization.

3. Cycle life: The battery undergoes a charge and discharge, which is called a cycle (a cycle). Under certain discharge conditions, the number of cycles that the battery can withstand before working to a certain capacity specified value is called cycle life.

4. Energy: The energy of the battery refers to the electrical energy that the battery can give under a certain discharge system, which is usually expressed in watt-hours (Wh).

5. Storage performance: During the storage of the battery, due to the impurities in the battery, such as positive metal ions, these impurities can form a microbattery with the negative electrode active substance, and the negative electrode metal dissolution and hydrogen precipitation occur.