Author ：Iflowpower – Portable Power Station Supplier
How to design a safe iron ion battery protection circuit? When we design a product of a lithium-ion battery, we should protect the circuit design on the lithium-ion battery, on this basis, can be designed for charging circuitry. The use of ferric lithium-ion batteries has also greatly promoted the design and development of corresponding battery management and battery protection circuits. Lithium-ion batteries are used to have complex control circuits to effectively guard the overcharge, over-discharge, and overcurrent state of the battery.
How to design a safe iron ion battery protection circuit? As the lithium-ion battery is rapidly increased in various industries, the safety performance of the battery is increasing, not only requires the lithium-ion battery to have excellent charge, discharge performance, but also require higher safety performance. The performance of lithium-ion batteries is important depending on the structure and performance of the internal materials used. These battery internal materials include negative electrode materials, electrolytes, diaphragms, and positive electrode materials, etc.
Among them, the choice of positive, negative electrode materials and quality is determined to determine the performance and price of lithium ion batteries. Therefore, the research of low-cost, high-performance, and negative material has always been the focus of the development of the lithium ion battery industry. The protection function of the ferric lithium ion battery is typically completed by the protective circuit board and the PTC, and the protective plate consists of electronic components, and the current accurately monitors the voltage of the battery and the current of the charge and discharge circuit at the time at -40 ¡ã C ~ + 85 ¡ã C.
Timely controlling current circuits; the important use of PTC is to protect in high temperature environments, anti-vicious accidents such as combustion, explosion, etc. Lithium-ion battery protection circuits typically consist of control IC, MOS switch tube, fuse, resistance, capacitance, etc., as shown in FIG.
Normally, the control IC output signal controls the MOS switch tube to turn on the battery and the outer circuit. When the battery voltage or the circuit current exceeds a predetermined value, it immediately controls the mOS tube to protect the battery. Safety.
Lithium-ion battery should do over voltage charging protection, overvoltage discharge protection, overcurrent discharge protection, short circuit protection, etc. So when we design a lithium-ion battery protection circuit, we must achieve at least the above protection function. Lithium-ion battery protection circuit designs due to the chemical properties of ferric lithium ion batteries, during normal use, electrical energy and chemical can be transformed in each other, but under certain conditions, if it is overcharged, over-discharge And overcurrent will result in chemical side reactions in the inside of the battery, which will seriously affect the performance and service life of the battery, and may have a large amount of gas, so that the internal pressure of the battery is rapidly increased and causes safety problems, so All iron lithium-ion batteries must be protected for effective monitoring of the battery's charge and discharge status, and turn off the charge under certain conditions, and the discharge circuit is damaged by alert to the battery.
Lithium-lithium-ion battery protection circuit includes excessive charging protection, overcurrent / short circuit protection, and over-discharge protection, requires high precision, protection of IC power, high resistance, and zero charging characteristics. Lithium-ion battery protection circuit work principle There is a serious quality accident in counterfeit, and the lithium-ion batteries of these counterfeit are likely to have excessive charge, and the problem is caused, which can lead to an interfry. Causes an outbred.
However, there is a product to effectively prevent lithium-ion batteries from being overcharged, over-placed and internal circuits, which is a lithium ion battery protective board. To the lithium-ion battery protection board also protects the battery to prevent battery overchart. When the external power supply continues to rapidly rapidly, the lithium-ion battery protective plate will sprout the protection, and when the internal power of the lithium ion battery reaches the saturation, the internal circuit of the lithium-ion battery protective plate automatically cuts off the rapid charging of the outside world.
power supply. Make the external power supply unable to enter the battery?. This is also the principle of lithium-ion battery protective board to protect the battery.
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