Lithium batteries generally come in two shapes: cylindrical and square. The internal structure of the battery is a spiral winding structure, with very thin, highly permeable polyethylene film insulating material separated between the positive and negative electrodes. The positive electrode includes a current collector composed of lithium cobalt oxide (or lithium nickel cobalt manganate, lithium manganate, lithium iron phosphate, etc.) and a foil 'aluminum. The negative electrode consists of a current collector made of graphitized carbon material and copper foil. The battery is filled with an organic electrolyte solution. In addition, a safety valve and PTC element (used in some cylindrical types) are installed to protect the battery from damage caused by abnormal conditions and output short circuits.
The tension of a single batLithium battery is 3.7V (the positive electrode of lithium iron phosphate is 3.2V) and the battery capacity cannot be infinite. Therefore, single lithium batteries are often connected in series or parallel. .To meet the requirements of different occasions.
Principle and structure of lithium batteries
Lithium batteries generally have two shapes: cylindrical and rectangular. The internal structure of the battery is a spiral winding structure, with very thin, highly permeable polyethylene film insulating material separated between the positive and negative electrodes. The positive electrode includes a lithium collector made of lithium and cobalt dioxide and a current collector made of aluminum film. The negative electrode consists of a lithium collector made of carbon foil material and a current collector made of copper film. The battery ist filled with an organic electrolyte solution. In addition, a safety valve and PTC element are installed to protect the battery from damage caused by abnormal conditions and output short circuits.
The voltage of a single lithium battery is 3.6V, and the capacity cannot be infinite. Therefore, single lithium batteries are often connected in series or parallel to meet the requirements of different occasions.
Here is the principle and structure of lithium batteries:
Lithium ion batteries use carbon materials as the negative electrode and lithium-ion batteries. containing compounds as positive electrode. There is no metallic lithium, only lithium ions. This is a lithium-ion battery.
Lithium-ion battery refers to the general term for batteries using lithium-ion intercalation compounds likepositive electrode material. The charging and discharging process of lithium-ion batteries is the process of intercalation and deintercalation of lithium ions. During the process of intercalation and deintercalation of lithium ions, it is also accompanied by the incorporation and deintercalation of electrons equivalent to lithium ions (it is customary to express the positive electrode as insertion or deintercalation, and the negative electrode by insertion or deintercalation).
During the charging and discharging process, lithium ions are inserted/deinterposed and inserted/deinserted back and forth between the positive and negative electrodes, which is vividly called "rocking chair battery" .