Control circuit of lithium ion battery all contain overcharge and overdischarge termination control function, and not the protection of the flow, temperature and short circuit protection circuit, so the task is aimed at all kinds of faulty battery may appear, parameters of the battery charge discharge state monitor and control to ensure the battery life and the effectiveness of the battery, and the external equipment from being damaged.
Polymer TG resettable fuse thermistor products, has outstanding advantages in high current density lithium ion battery and its management circuit over-current, over temperature, short circuit protection, polymer TG resettable fuse thermistor called self reset overload protector or self resetting fuse, a single element can complete over-current, over temperature short circuit protection.
Has the irreplaceable role in the protection and application of lithium ion battery and its management circuit, has now developed into a protective element must be applied to lithium ion battery and its management circuit. Lithium ion battery management and protection circuit is usually composed of a dedicated integrated IC and metal oxide field effect transistor consisting of a protective circuit. Protect IC by monitoring the battery voltage at both ends of the battery and the discharge current to control the FET on or off, to prevent over charging, short circuit, over discharge, etc..
Although a protection is usually considered to be reliable, but when the electrostatic discharge voltage is too high or super high temperature may damage the protection of IC or MOS-FET, but also in the short circuit integrated circuit will oscillate at the same time, the indirect detection of charge and discharge current most IC+MOS-FET circuit, and can not guarantee that will provide overcurrent protection in all the work state of the battery, but also reduces the reliability of protection.
Fuse thermistor TG access self-healing protection circuit, a protection circuit failure or even if Wen Sheng is high, PTC can still provide timely protection of overcharge, short circuit, overcurrent, overtemperature fault, ensure the battery in the misuse or abuse, or external reverse, short road conditions without explosion, damage the battery safety problems.


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