1. Chemical battery refers to a kind of device that converts the chemical energy of positive and negative active materials into electrical energy through electrochemical reaction. After long-term research and development, it has ushered in a wide variety of applications and applications. The building can accommodate huge installations, as small as millimeters. It serves our good life all the time. The development of modern electronic technology places high demands on chemical batteries. Every breakthrough in chemical battery technology Both have brought about the revolutionary development of electronic devices. People in modern society are increasingly inseparable from chemical batteries in everyday life. Now many electrochemical scientists in the world are focusing on electric vehicles. Chemical battery field.
2. Dry battery and liquid battery
The distinction between dry and liquid batteries is limited to the period of early battery development. The earliest battery consisted of a glass container filled with electrolyte and two electrodes. Later, a battery based on paste electrolyte was introduced, also called a dry battery. .
There are still "liquid" batteries. They are generally very large in size. For example, large fixed-type lead-acid batteries used as uninterruptible power supplies or lead-acid batteries used with solar cells. For mobile devices, some are used completely. Sealed, maintenance-free lead-acid batteries, which have been used successfully for many years, in which the electrolyte sulfuric acid is fixed by silicone gel or absorbed by glass fiber separators.
3. Disposable battery and rechargeable battery
Disposable batteries are commonly referred to as "discarded" batteries. Because they are exhausted, they can no longer be recharged and can only be discarded. Common disposable batteries include alkaline manganese batteries, zinc-manganese batteries, lithium batteries, and silver-zinc batteries. Zinc air battery, zinc mercury battery and magnesium manganese battery.
Rechargeable batteries are made of different materials and processes. Commonly used are lead-acid batteries, nickel-cadmium batteries, nickel-iron batteries, nickel-hydrogen batteries, and lithium-ion batteries. The advantages are long cycle life, they can be fully charged and discharged more than 200 times. Some rechargeable batteries have higher load capacity than most disposable batteries. In the use of ordinary nickel-cadmium and nickel-hydrogen batteries, the unique memory effect causes inconvenience in use and often causes premature failure.
4. Fuel cell
A fuel cell is a device that directly converts the chemical energy of a fuel into an electrical energy through an electrochemical reaction.
5. Dye-sensitized solar cell battery
Models are generally divided into: 1, 2, 3, 5, 7 number, of which 5 and 7 are especially commonly used, the so-called AA battery is the 5th battery, and the AAA battery is the 7th battery! AA, AAA are all descriptions of the battery model.
E.g:
AA is what we usually call the 5th battery, the general size is: diameter 14mm, height 49mm;
AAA is what we usually call the 7th battery, the general size is: diameter 11mm, height 44mm.
The following is from this site: NiMH battery forum users add
Additional battery knowledge:
Talk about the common "AAAA, AAA, AA, A, SC, C, D, N, F" models
AAAA models are rare, disposable AAAA Energizer alkaline batteries can be seen occasionally, generally used in computer pens. The standard AAAA (flat head) battery height is 41.5 ± 0.5mm, diameter 8.1 ± 0.2mm.
AAA model batteries are more common. The general MP3 uses AAA batteries. The standard AAA (flat head) battery has a height of 43.6±0.5mm and a diameter of 10.1±0.2mm.
AA model batteries are well known, digital cameras, electric toys are indispensable for AA batteries, standard AA (flat head) battery height 48.0 ± 0.5mm, diameter 14.1 ± 0.2mm.
Only one A indicates that the model battery is not common. This series is usually used as the battery core inside the battery pack. I often change the nickel-cadmium and nickel-metal hydride batteries of the old camera to almost 4/5A or 4/5SC batteries. Core. Standard A (flat head) battery height 49.0 ± 0.5mm, diameter 16.8 ± 0.2mm.
The SC model is also uncommon. It is generally the battery core inside the battery pack. It can be seen on power tools and cameras as well as imported equipment. The standard SC (flat head) battery has a height of 42.0±0.5mm and a diameter of 22.1±0.2mm.
The C model is also the second battery, which has many uses. The standard C (flat head) battery has a height of 49.5±0.5mm and a diameter of 25.3±0.2mm.
D model is the first battery, widely used, civilian, military, special DC power supply can find D-type battery, standard D (flat head) battery height 59.0 ± 0.5mm, diameter 32.3 ± 0.2mm.
The N model is not common. I don't know what to use inside. The standard N (flat head) battery has a height of 28.5±0.5mm and a diameter of 11.7±0.2mm.
F model battery, now is the electric bicycle, the new generation of power battery, there is a tendency to replace the lead-acid maintenance-free battery, generally for the battery core (personal insight: in fact, too big, not easy to use alone, huh, huh). The standard N (flat head) battery has a height of 89.0±0.5mm and a diameter of 32.3±0.2mm.
Everyone noticed that the word (flat head) means that the positive electrode of the battery is flat and has no protrusion. It is used as a battery core for spot welding of battery packs. Generally, it is the same type of pointed end (can be used as a single battery). The height is 0.5mm more. By analogy, I don't explain it one by one. Also, the battery is not a regular "AAA, AA, A, SC, C, D, N, F" main models. In front, there are often scores "1/3, 2/3, 1/2, 2/3, 4/5, 5/4, 7/5". These scores indicate the corresponding height of the pool body, for example "2 /3AA" means that the high is 2/3 of the rechargeable battery of the general AA battery; and the "4/5A" means that the high is the 4/5 rechargeable battery of the general A battery.
There is also a model number representation, which is five digits, for example, 14500, 17490, 26500. The first two digits refer to the diameter of the cell body, and the last three digits refer to the cell height. For example, 14500 refers to the AA battery, that is, about 14 mm diameter. , 50mm high.
Battery maintenance method:
1. Do not store the battery together with ordinary metal objects to avoid short circuit problems.
2. Avoid storing the battery in a hot and humid place.
3. The battery should be out of the reach of children.
4. If the battery is left in the camera or charger for a long time, it may cause leakage and damage.
5. Each time you replace the battery, you must replace the battery with a new one. Please do not mix old and new batteries (NiMH battery). Do not use different types or brands of alkaline batteries.
6. Do not heat the battery or throw it into the fire.
7. Do not expose the battery to fresh water or sea water, and take special care to keep it dry.
8. Do not try to deform the battery, remove the battery.
9. Do not attempt to peel off the battery pack or cut the battery pack.
10. Do not drop the battery, impact or strongly impact the battery with another item.
11. Do not use batteries that have been charged, deformed, faded, or have a significantly abnormal appearance.
12. The battery will feel warm immediately after use. Turn off the camera and wait until it cools before removing the battery.
13. When replacing the battery, you must install 4 new batteries. "New battery" refers to the original battery that has just been purchased, or the NI-CO or NI-MH battery that has just been charged.
14. The battery will deteriorate under low temperature (+10 degrees C or lower) and the battery life is shorter. This is the characteristic of the battery. Before loading, in cold places, put the battery into the pocket or similar to warm Where. If you use a warm stove to warm the battery, make sure that it does not come into direct contact with the warm stove.
15. Rechargeable battery (NI-MH or NI-CD battery), you must use a dedicated battery charger to charge the NI-MH or NI-CD battery No. 3. Charge according to the user manual provided by the charger. Do not use the battery. The charger is used to specify the battery to be used.
16. The battery will feel warm immediately after charging. The NI-MH or NI-CD battery is not charged when it is on the machine. Please make sure to charge it before use. The camera's mechanism is controlled by a very small current, even when the camera When the power is off.
How to clean the battery:
The contact points on the battery (+ and -) or the inside of the battery cover are dirty, which can prevent the current of the digital camera from being turned on. So you will find that even if the camera's battery still has enough power, it is controlled by the camera. The warning sign on the display with insufficient power will continue to flash and the camera will automatically turn off.
To avoid this problem of power loss, keep the battery contacts (+ and -) and the inside of the battery cover clean. If necessary, use a soft, clean, dry cloth to gently wipe.
In addition, before using the battery, use a soft, dry cloth to clean the contact points on both ends of the battery, so that the battery can be fully charged.
note:
Do not attempt to clean the inside of the battery accessories of your digital camera, as this will damage your digital camera.
Do not use a cleansing or chemically soluble detergent such as thinner, petroleum spirit, or a solvent containing alcohol to clean your digital camera, battery, or charger. Failure to do so may damage your equipment. .
Use a soft, dry cloth to clean the contacts on both ends of the battery and try to keep the contact points on both ends of the battery clean.
caveat:
Do not heat or pressurize the battery, or disassemble, drop, or short-circuit. Do not let the battery approach the fire or water source.
Do not put the battery in your pocket.
Do not use different types of batteries at the same time. Such actions may cause fire and explosion hazards.
Battery storage method
If you plan not to use the camera for a long time, you must remove the battery and store it in a cool, dry environment.
Be especially careful not to leave the NI-MH or NI-CD current in the camera for a long time. Even if the battery is charged, it will not be able to be used due to excessive discharge. The NI-MH or NI-CD pool will automatically discharge even when not in use.
Battery Disposal Instructions Before you discard your battery, you must first make sure that the battery is completely drained.
Before using them, make sure to charge first. When the charge time is significantly shortened, the life of the period has reached the end point. Please replace the battery.
caveat:
Please stick the positive electrode of the battery to the tape to avoid the danger of burning or exploding when the battery is used.
In particular, lithium batteries are toxic, improper use and explosion hazard, do not dispose of them at will.
Please dispose of used batteries in accordance with the relevant waste regulations and relevant laws and regulations. Generally, the convenience store has a waste battery recycling box. Do not discard the used batteries in general garbage. Or you can ask the relevant government agencies. Detailed information on battery recycling and disposal.
You can always find some Walk-Through Metal Detector in some checkpoints like Custom, airport, seaport, railway station and metra station, even in some enterprise like Foxconn, BYD in China, arched metal detectors are widely applied. Archway Metal Detector gate protect people's life from being hurt and property being damaged by terrorism. Chinese Walk Through Metal Detector is cheap but also good in use. And also offer 1 year warranty, it worth your choice!
Checkpiont Metal Detector,Check Archway Metal Detectors,Gravity Metal Detector,Check Metal Detector
Shenzhen Mama Security Technology Co., Ltd. , http://www.mamasecurity.com