Purpose and procedure of secondary liquid injection of lithium battery

Date: 2024-06-07     hits: 412

Reverse-ion battery as a high-performance battery, with the growth of the use of time, the performance of the ion battery may decline, in order to restore the performance of the battery and extend its life, secondary injection has become an important maintenance measure, the following will be detailed about the process of secondary injection of ion battery and precautions.


1. In the use of smoke ion batteries, the main sources of battery performance decline include the following aspects:

Electrolyte decomposition: In the process of multiple charging and discharging, the electrolyte may decompose, resulting in a decrease in its conductivity, which affects the performance of the battery.


2. Plastic consumption of the electrode material: long-term use will lead to the plastic consumption of the electrode material, making it difficult to insert and remove the inverse ions, thereby reducing the battery capacity.


3. Diaphragm obstruction:

During use, the separator may be precipitated by impurities in the electrolyte, and the transmission of bile ions affects the performance of the battery. The purpose of the secondary injection is to supplement the electrolyte inside the battery, so that it can restore the added conductance and electrochemistry, and the new electrolyte can be injected into the pool to remove the sediment and impurities inside the battery.


Improve the surface retention of electrode materials, thereby increasing the capacity and cycle life of the battery.


1. Preparations (1) Tools: Prepare tools and materials such as the injection device, injection pipe, injection needle, and electrolyte.


(2) Battery treatment: The smoke ion battery that needs to be injected with liquid twice will be treated properly, such as removing the battery shell and taking out the battery cell.


2. Clean the inside of the battery (1) Use the appropriate cleaning method, such as washing with anhydrous B to pure water, to remove the old electrolyte residues and impurities inside the battery.


(2) Ensure that the inside of the battery is clean to improve the effect of secondary injection.


3. Injection operation (1) Connect the injector to the injection pipe, and insert the injection needle into the injection hole of the battery.


(2) Control the injection degree, and the woman slowly injects the new electrolyte into the battery.


(3) Pay attention to the control of the amount of liquid injection to avoid too much liquid injection.


(1) After the injection is completed, pull out the injection needle and seal the injection hole. (2) Place the battery for a period of time so that the electrolyte can fully permeate into all parts of the battery.


1. Clean thoroughly: Before the secondary injection, the battery must be thoroughly cleaned to remove the old electrolyte and impurities, otherwise, the residual substance may react with the new electrolyte, affecting the battery performance.


2. Accurate liquid injection: strictly control the amount of injected electrolyte when injecting liquid, too much to too little will have an adverse effect on battery performance, too much electrolyte may be equivalent to the battery response rate.

Too little and the battery's performance cannot be fully utilized.


3. Pay attention to safety: electrolyte is usually corrosive, and appropriate protective equipment should be worn during operation, such as gloves and eye care sulfur.


4. Wait for penetration: Note that after completion, the battery needs to be given enough time for the electrolyte to fully penetrate into the battery, which moves to ensure the performance of the battery and zero life 


5.Professional operation: secondary injection operation is not related to a certain technology and stove test, if you are not familiar with the relevant process, it is recommended to seek professional help.


Conclusion Secondary injection is an effective method for maintenance and repair of ion batteries, which can prolong the life of batteries and improve their performance.

This process should be carefully operated, follow the correct steps and precautions and equipment manufacturers equipment book, through the above introduction, I hope to have a deep understanding of the history of lithium battery secondary injection, as a favorable reference in practical applications.


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