Battery Manufactory

Lithium batteries provide power for modern devices, but the volatilization and leakage of their core material, electrolyte, are hidden risks. Electrolytes are usually composed of organic solvents (such as carbonates) and lithium salts (such as LiPF₆). Once leaked, they will not only corrode the equipment, but also release toxic gases. This article will analyze the causes of leakage and provide practical prevention and response solutions. I. Why does the electrolyte leak? 1. High temperature volatilization: When the temperature exceeds 60°C, the carbonate solvents in the electrolyte are easy to vaporize, causing the internal pressure of the battery to increase. If there are defects in the battery packaging (especially soft-pack batteries ), the gas will open the sealing layer and cause leakage. 2. Physical damage: Dropping, squeezing or puncturing will cause the battery shell to rupture, and the liquid electrolyte will flow out directly. 3. Long-term aging: After th...

Lithium polymer batteries (LiPo) are widely used in smart phones, drones, wearable devices and other fields due to their high energy density battery , thinness and flexibility. However, many users have doubts about the difference between "fast charging" and "standard charging": Is fast charging safe? Why do you sometimes need to choose slow charging? This article will reveal the core difference between the two from the perspective of technical principles, performance impact and practical application. I. Charging speed: the game between current and time 1. Standard charging (slow charging) Current intensity: usually charged with a small current of 0.2C~0.5C (C is the battery capacity). For example, 0.5C of a 1000mAh battery is 500mA. Charging time: about 2~4 hours to fully charge, the current is gentle, reducing the internal pressure of the battery. 2. Fast charging (fast charging) Current intensity: can reach 1C~5C (such as a 1000mAh battery charged...

Have you experienced these scenes before? The battery level of the phone instantly jumps red from 30%, and it suddenly shuts down in an emergency. The newly purchased electric vehicle has a nominal range of 500 kilometers, but after two years, it can only run 300 kilometers. The laptop gets more and more stuck when plugged in, as if its performance has been "sealed". The culprit behind these problems is the silent decline in battery health. Battery health is not only a percentage number, but also the lifeline of device lifespan. Today, we will delve into why this indicator is worth paying close attention to like blood pressure. I. What is battery health? 1. Definition Battery Health is the ratio of the current battery capacity to its original capacity, usually expressed as a percentage. 100%: Brand new battery, fully charged state 80%: Apple recommends changing the threshold <60%: The device may suddenly die at any time 2. Detection principle Coulomb counti...

First, the state of the battery itself. For example, are there any problems in the production process, such as the quality of raw materials, manufacturing process, or battery aging. If it is a new battery, it may not be activated yet, and the active substances inside have not fully played their role, resulting in low initial discharge capacity. 1. The battery is not fully activated Cause: Some batteries (such as lithium-ion batteries and nickel-metal hydride batteries) require a complete charge and discharge cycle before the first use to activate the electrode material, fully infiltrate the electrolyte, and improve the utilization rate of the active material. Solution: a. Perform 2-3 complete charge and discharge cycles (0.2C~0.5C rate) as recommended by the manufacturer. b. Avoid using fast charge or high-rate discharge directly before the first discharge.   2. Influence of test environment temperature Cause: Low temperature (such as below 10℃) will significan...

As the most mainstream energy storage device at present, lithium batteries are widely used in various electronic devices such as mobile phones, laptops, mobile power supplies, electric vehicles, etc. However, lithium batteries of different devices show obvious differences when charging. These differences are not only due to the characteristics of the battery itself, but also closely related to the design logic of the charger. This article will analyze the core differences between different devices charging lithium batteries from the dimensions of charging method, protocol support, and safety protection. I. Charging mode: constant current and constant voltage are the basis, and the details are different. The standard charging process of lithium batteries is divided into two stages: constant current charging and constant voltage charging: the initial stage is fast charging with constant current. When the voltage rises to the rated value (such as 4.2V or 4.35V, depending o...

In the cold winter, the battery level of mobile phones drops "cliff-like", and in the hot summer, the charging speed of electric vehicles slows down inexplicably - temperature is the culprit behind the scenes. Lithium batteries are as sensitive to temperature as human skin. In severe cold and heat, they may "strike" or "self-destruct". This article will dismantle how temperature destroys batteries at the molecular level and provide scientific response strategies. I. The "frozen seal" of low temperature on batteries 1. How does low temperature "paralyze" batteries? Electrolyte viscosity soars: Below 0°C, the fluidity of the electrolyte drops sharply, the migration of lithium ions is like being stuck in a quagmire, and the internal resistance increases sharply. Capacity "shrinks": At -20°C, the capacity of lithium batteries is only about 30% (data source: Argonne National Laboratory, USA). Voltage dive: iPhone m...

"Battery repair artifact", "One move to restore 100% capacity", "Old battery refurbished as new" - similar advertisements are flooding the Internet, attracting countless users who are troubled by battery life issues. But can batteries really "rejuvenate"? Repair or IQ tax? Is refurbishment legal? This article will clear the fog for you and provide rational solutions based on battery chemistry principles and industry truths. I. The essence of battery aging: irreversible chemical decay Whether it is a mobile phone lithium battery , an electric vehicle power battery or a lead-acid battery, the essence of aging is an irreversible chemical reaction of the internal materials: Lithium battery: electrolyte decomposition, positive electrode material structure collapse, lithium dendrite growth. Lead-acid battery: plate sulfidation, electrolyte stratification. NiMH battery: electrode passivation, active material shedding. Conclusion: Battery ...