What is a battery What is a battery

A chemical power source, commonly known as a battery, is a device that uses the energy released by the chemical reaction of a substance to be directly converted into electrical energy (discussed below). As the name suggests, a battery is a pool of electricity, like a pool, the voltage and capacity of the battery are similar to the water level and storage capacity of the pool. The voltage of the battery indicates how much power the battery may release to the outside world, and the capacity of the battery indicates how much power the battery stores.

What are the components of a battery?

Any battery consists of four parts, namely electrodes, electrolyte, separator and housing.

What are the electrodes of a battery?

The electrode is the core part of the battery, which is generally composed of an active substance and a conductive skeleton, the active substance is a substance that can release electrical energy through chemical changes, and the conductive skeleton mainly plays the role of conducting electrons and supporting the active substance. The electrodes in the battery are further divided into positive (electric) electrodes and negative (electric) electrodes. The end marked with "+" on the battery logo is the positive pole, and the end marked with "-" is the negative pole.

How does a battery work?

Battery use processBattery discharge process, when the battery is discharged, the oxidation reaction is carried out on the negative electrode, electrons are provided to the outside, and the reduction reaction is carried out on the positive electrode, electrons are received from the external circuit, and the current flows from the positive electrode to the negative electrode through the external circuit, the electrolyte is an ionic conductor, and the ions move directionally between the positive and negative electrodes inside the battery and conduct electricity, the cations flow to the positive electrode, and the anion flows to the negative electrode. The negative electrode of the discharged battery is the anode, and the positive electrode of the discharge is the cathode, and the oxidation reaction occurs at the interface of the two types of conductors of the anode, and the reduction reaction occurs at the interface of the two types of conductors of the cathode. The whole battery forms a complete discharge system composed of the electronic system of the external circuit and the ionic system of the electrolyte liquid, so as to generate electrical energy for power supply.

What is a rechargeable battery?

Rechargeable batteries, also known as storage batteries and secondary batteries, are batteries that can be recharged and used repeatedly. Common ones are: lead-acid batteries (commonly known as "batteries" when used in automobiles), nickel-cadmium batteries, nickel-hydrogen batteries, lithium-ion batteries, etc.;

Why can rechargeable batteries be charged?

Rechargeable batteries generally have a common electrochemical characteristic, that is, the chemical reaction is a reversible reaction, which can be converted into chemical energy by adding an external power supply, so that the discharged battery can be restored to its original state. Note:

If the chemical reaction in it is irreversible, the battery cannot be charged, otherwise it will cause leakage, ** and other things! Dry batteries are just that.

Brand model: Huawei MateBook D15

System: Windows 11

A battery is the conversion of the chemical energy of a substance into electrical and thermal energy (internal energy).

A battery is a device that converts chemical energy into electrical energy in a cup, trough or other container or composite container that contains an electrolyte solution and metal electrodes to generate an electric current. It has a positive electrode and a negative electrode. With the advancement of science and technology, batteries generally refer to small devices that can generate electrical energy, such as solar cells.

The performance parameters of the battery mainly include electromotive force, capacity, specific energy and resistance. Using the battery as energy, you can get a stable voltage, stable current, long-term stable power supply, little influence from the outside world, and the battery structure is simple, easy to carry, simple and easy to charge and discharge, not affected by the outside climate and temperature, stable and reliable performance, and plays a great role in all aspects of modern social life.

Regarding the meaning of battery, the computer terminology is explained.

It is divided into ordinary batteries (AA refers to No. 5 batteries, AAA refers to No. 7 batteries) and special batteries. It is recommended to use ordinary battery products, because you can also achieve the latter effect by purchasing rechargeable batteries for products that use ordinary batteries; If you use a special battery, you are prone to the trouble of having to use a special battery after the battery is broken. Of course, the special battery has a good blue worm, which can achieve a thinner body shape.

Related to it is, of course, the time to call the defeat - the longer the better, needless to say. There are two points to explain here: first of all, the manufacturer's nominal time is the specific operating environment, temperature, volume, whether the backlight is turned on, the capacity of the battery, etc., some consumers feel that their machine has not reached the nominal time, which is the difference between the actual use environment and the nominal environment; Secondly, in this indicator, large factories are relatively more rigorous, and generally the use time in the nominal environment can reach the nominal value, while the moisture of small factories in this regard is relatively large.

1. Ordinary batteries, which are often referred to as No. 5 and No. 7 batteries, belong to dry batteries.

2. The dry battery is a kind of volcanic battery, and Liyu uses a certain absorbent (such as sawdust or gelatin) to make the contents into a paste that will not spill. It is often used as a power supply for flashlights, lighting, radios, etc.

3. The common dry battery is the zinc-manganese battery (or the carbon-zinc town jujube battery, that is, the dryleclanché cell). It is not only suitable for flashlights, semiconductor radios, cassette recorders, cameras, electronic clocks, toys, etc., but also for various fields in the national economy such as national defense, scientific research, telecommunications, navigation, aviation, and medicine.

1. Battery refers to an electrolyte solution.

and metal electrodes to generate an electric current in a cup, trough or part of a container or composite container that can convert chemical energy.

A device that converts it into electrical energy. It has a positive electrode and a negative electrode. With the advancement of technology, batteries generally refer to small devices that can generate electrical energy.

2. For example, the solar segment leases and sells energy batteries. The performance parameters of the battery are mainly electromotive force.

Capacitance grip, specific energy, and resistance. Using the battery as the energy source, you can get a current with stable voltage, stable current, long-term stable power supply, and little influence from the outside world, and the battery structure is simple, easy to carry, simple and easy to operate, not affected by the external climate and temperature, stable and reliable performance, and plays a great role in all aspects of modern social life.

The mobile phone battery is an energy storage tool that provides power for the mobile phone, and the mobile phone battery generally uses lithium batteries and nickel-metal hydride batteries.

A mobile phone battery is generally composed of three parts: a cell, a protective circuit and a shell. "mAh" is the unit of battery capacity, and the Chinese name is milliampere-hours. Under normal use conditions and no serious impact, the service life set by the mobile power supply and the contact manufacturer should be 5 years, which may have an impact on the service life of the mobile ** in humid and rainy areas.

The service life of a mobile** battery is related to the quality of the battery and the number of times it can be charged, and it can generally be charged at least 500 times.

The lithium-ion battery used in the mobile phone has no memory effect, and it can be fully charged in 2-3 hours, and it is enough to be fully charged. If the first three charges and discharges of a new battery can really reach 12 hours or more, it will cause great damage to the battery, which may cause the battery to swell and even burn. Fortunately, both the phone and the charger have protection circuits, and when charged to 100%, the power will be automatically cut off, and it will not continue to charge when plugged into the charger.