Custom Lithium Ion Battery Pack

What is advantages and disadvantages of lithium-ion batteries?

Jan 11, 2019   Pageview:64

The lithium-ion battery is a lead-acid battery system, and gel battery is a colloidal substance add to electrolyte.


The anti-vulcanization ability and low-temperature performance of the colloidal battery are better than ordinary lead-acid batteries.


However, the production process of colloidal batteries is higher than that of ordinary lead-acid batteries, and it is more prone to thermal runaway.


Advantages and disadvantages of wound battery


Laminated:


1: The size is more flexible, and can be made into triangles, circles, and the like.


2: Mechanization is not easy to achieve.


3: The pole piece should be punched and cut, with more sections, easy to pierce the diaphragm, easy to short circuit, and easy to produce a reaction.


4: The tension of the battery is not easy to control.


5: The pole piece is easy to check or pick.


Winding:


One: Mechanization is easy, speed is faster, uniformity more guaranteed, and it is conducive to mass production.


Two: There is an inconsistent tension between the front side and the side surface, resulting in uneven internal reaction.


Three: High coating requirements for pole pieces.


Four: The pole piece layer is required to have a certain elasticity; otherwise, it may fall off or be broken at the bend.


Five: Since the electrode taken out from the pole piece, there is a problem of electric field distribution. The electrode layer is required to have good electrical conductivity. The key is that the process is difficult to control.


The main advantages of lithium batteries:


The lithium-ion battery voltage platform is high: the average voltage of the single battery is 3.7V or 3.2V, which is equal to the series voltage of three nickel-cadmium batteries or nickel-hydrogen batteries, which is convenient for forming a battery power pack;


Lithium battery advantages and disadvantages


The lithium battery has a high energy density relative to the battery. With high storage energy density, it has reached 460-600Wh/kg, which is about 6-7 times of lead-acid battery;


Compared with lead-acid batteries, lithium batteries are light in weight, and the weight in the same volume is about 1/5-6 of that of lead-acid products;


Lithium battery advantages and disadvantages


Lithium battery has a relatively long service life, and the service life can reach more than 6 years. The battery with lithium iron phosphate as the positive electrode is charged and discharged with 1CDOD, and there are 1000 records that can used;


With high power bearing capacity, lithium-iron phosphate lithium-ion battery for electric vehicles can achieve 15-30C charge and discharge capacity, which is convenient for high-intensity start-up acceleration;


Low self-discharge rate, no memory effect;


The lithium battery has high adaptability too high and low temperature and can used in the environment of -20 ° C - 60 ° C. After the process treatment, it can used in the environment of -45 ° C;


Lithium battery advantages and disadvantages


Green, no matter whether it produced, used or scrapped; it does not contain any toxic and harmful heavy metal elements and substances such as lead, mercury and cadmium.


Lithium battery defects / methods


1, Disadvantages of lithium batteries


2. Lithium batteries have poor safety and there is a danger of explosion.


3. Lithium batteries of lithium-cobalt oxide materials cannot discharged at a large current, and the safety is poor.


4. Lithium batteries need to protect the line to prevent the battery from overcharged and discharged.


5. High production requirements and high cost


the page contains the contents of the machine translation.