There are four reasons why the lithium battery sealing process fails.
1. Battery core deformation due to defects in the battery core production process or long-term vibration and external force.
2. Damage caused by external force. Collisions and irregular installations damage the sealing structure. Welding defects and insufficient sealing glue lead to poor sealing performance.
3. Secondary reactions occur inside the battery to produce gases, the most typical of which is the secondary reaction with water.
4. Insufficient battery production and manufacturing technological capabilities, battery storage time, temperature difference during battery charging and discharging, charging and discharging current, etc.
Can the lithium battery still be recharged after a shortrecooked?
Hello, what is the method to extract steel balls from lithium batteries? The method of extracting steel balls from lithium batteries is as follows:
1. Place the steel balls into the steel ball groove when sealing the lithium battery.
2. Find the opening at the bottom of the groove of the lithium battery steel ball.
3. There is a dial at the opening. Turn the dial to bring out the steel balls one by one.
4. The expelled steel balls are sent to the injection port of the lithium battery through the catheter, and the steel balls can be removed.
Lithium batteries cannot be used after a short circuit and are subject to explosion.
The types of battery core explosions can be summarized as: external short circuit, internal short circuit and overload.
A battery short circuit meansthat the positive and negative poles of the battery are directly connected with wires to form an abnormal path, which will cause serious damage to the battery and cause combustion, which may cause fire, or the battery compartment may explode due to excessive pressure.
Whether it is a battery short circuit or an electrical short circuit, due to the excessive electrical heat generated by the short circuit, its temperature is very high Before before the circuit is broken, it is enough to melt. metal in general, which may cause fire or burns. Improper use of electrical appliances endangers the safety of property and people.
Detailed information:
Charging knowledge
General mobile phone batteries The voltage is written as 3.7V, but the voltage of general chargers is written as 5V, mBut it will not affect the use because there are no 3.7V cell phone chargers for sale.
A size 5 cylindrical lithium battery, that is, a 14500 battery. It uses lithium battery voltage regulator technology to adjust the battery voltage to a voltage of 3.0 V suitable for small electrical appliances.
Regarding the problem of "activating" newly purchased lithium-ion batteries, many opinions believe that the charging time should be more than 12 hours and repeated three times to activate the battery . This claim that "the first three charges require more than 12 hours" is obviously a continuation of the claim regarding nickel batteries (such as nickel-cadmium and nickel-metal hydride). This statement can therefore be considered misinformation from the beginning.
There is a very big difference in the characteristicscharging and discharging risks of lithium batteries and nickel batteries, and we can tell you very clearly that all serious official technical information points out that overcharging and overdischarging will cause serious damage to lithium. batteries, especially liquid lithium batteries. Ionic batteries cause enormous damage. Therefore, it is best to charge according to standard time and methods, especially not to charge for more than 12 hours.
Should the battery be activated? The answer is yes, activation is required! However, this process is carried out by the manufacturer and has nothing to do with the user, and the user does not have the opportunity to complete it.
The actual activation process of lithium batteries is as follows: the lithium-ion battery shell is filled with - sealed - formed electrolyte, which is charged at constant voltage and then discharged. This happensit for several cycles. completely infiltrate the electrode into the electrolyte. The liquid is fully activated until the capacity reaches the requirement. This is the process of activation - capacity division, which means that the lithium-ion battery has been activated after leaving the factory.
Additionally, the activation process for some batteries requires the battery to be in an open state and then sealed after activation. Unless you have battery production equipment, how do you finish it?
But why do some product instructions state that users are advised to fully charge and discharge the phone during the first three uses? Isn't that an activation? In fact, the fact is that once the battery leaves the factory, is sold and is in the hands of users, it will take some time, a month or several months. In this way, the material of the electbattery trode will be damaged. will be “passivated”, and the capacity will be low at that time. At normal values, the duration of use is also shortened.
However, lithium batteries are easy to activate. The battery can be activated and restored to normal capacity after 3-5 normal charge and discharge cycles. Due to the characteristics of the lithium battery itself, it has almost no memory effect. Therefore, users do not need any special methods or equipment during the activation process of new lithium batteries.
Baidu Encyclopedia - Battery short circuit?
Baidu Encyclopedia - Lithium battery