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How to improve the safety of mobile phone lithium batteries?

152 views Yuda Electronic (HK) Technology Co.,Limited. 2020-11-11

The composition and principle of mobile phone lithium battery

Mobile phone lithium batteries are composed of materials such as positive electrode, negative electrode, separator and electrolyte. The working principle of 3C lithium battery can be simply understood as: During the charging process, lithium ions are extracted from the positive electrode and embedded in the negative electrode inside the battery; outside the battery, external electrons directly migrate to the negative electrode. During the discharge process, lithium ions inside the battery are extracted from the negative electrode and inserted into the positive electrode; outside the battery, external electrons directly migrate to the positive electrode.

How to improve the safety of mobile phone lithium batteries?
Safety analysis of mobile phone lithium battery

 

The safety of mobile phone lithium batteries has always been a concern. Inferior materials, rough craftsmanship, incorrect use, or untested batteries all have certain safety hazards. Therefore, if the mobile phone lithium battery is to avoid safety risks from the root cause, the battery module and circuit protection must be in place, and the performance and safety of the mobile phone lithium battery must be tested to ensure that the battery structure and various functions are complete before it can be put into use.

In the process of using or charging, mobile phone lithium battery will inevitably generate heat. When the battery’s heat dissipation capacity cannot keep up, the battery material will have side reactions, which will cause safety risks of the battery and affect the use of mobile phone lithium batteries. Therefore, paying attention to the correct use method can also effectively avoid battery safety risks. For example, when the temperature of the mobile phone lithium battery is too high, stop using it immediately, wait for the battery to dissipate and return to normal temperature before continuing; the same is true during charging, and it is not suitable to overheat Charge it in the state.

Defects in the coating of mobile phone lithium batteries or folded electrodes, etc., pose great safety risks. Testing the mobile phone lithium battery can cut off the circulation of dangerous batteries before the battery is assembled. Mobile phone lithium batteries with unqualified technology, materials, production, and performance cannot be put into use in the test; the use of high-current shrapnel micro-needle modules in the test can greatly improve the test efficiency of mobile phone lithium batteries, thereby reducing production costs.

For mobile phone lithium battery testing, the high-current shrapnel micro-needle module is the medium for connection and conduction, which can transmit high current. There are also reliable solutions in small pitches, with stable performance and strong conduction function.

First of all, structurally, the high-current shrapnel microneedle module is a one-piece shrapnel design, which has the characteristics of high overall accuracy, low impedance, and strong over-current capability. There are a variety of head types to choose from and can be customized according to test requirements. Secondly, in terms of performance, the high-current shrapnel micro-needle module has good adaptability and compatibility in the field of pitch ≤ 0.2mm. It has obvious advantages when it is connected without pin and continuous needle; when current is transmitted, it can carry up to 50A high current, stable overcurrent, constant voltage, and excellent connection function; in the test, its service life is more than 20w times on average, strong conductivity, no frequent replacement, conducive to stable testing of mobile phone lithium battery, cut off The possibility of dangerous batteries flowing out.

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