EPS battery production process Emergency Power Supply (EPS) is a...
EPS battery production process
Emergency Power Supply (EPS) is a device that ensures a stable supply of power in an emergency, and as its core component, EPS batteries are critical to its performance and reliability. In order to ensure the high quality and performance of EPS batteries, the production process needs to go through a number of strict process steps. The following are the 21 main processes of EPS battery production, each of which has a key impact on the quality and safety of the final product.
Main content
Negative homogenate is an important step in the battery manufacturing process, which involves mixing the negative active substance, conductive agent and binder together, and dispersing them uniformly through kneading to form a stable paste.
Positive homogenization is a key step in the lithium battery manufacturing process, which involves mixing positive active substances, conductive agents, adhesives and other additives into a uniform slurry for subsequent coating, pressing and other process steps.
Coating technology refers to coating fluid such as adhesive on the substrate through the coating equipment, and then the coated fluid coating through the oven drying or curing through the transmission system to add a special function of the substrate film layer. This technology has a wide range of applications in industrial manufacturing, especially in industry, people's livelihood, electronics and optoelectronics, communications, new energy, construction and other dozens of industries.
The roller breaks down the bonded anode and cathode materials into smaller particles through a high-speed rotating shaft and roller, or firmly fixed multiple sheets together to form a tighter positive and negative electrode structure. The roller is generally composed of a spindle, a roller wheel, a feeding device, a transmission system and a control system. The roller takes the raw lithium battery material to the feed port of the machine, and then under the action of the spindle, the roller starts to turn, the roller sandwiched the material between the two roller wheels, and then forcefully compresses the material to compress it into the desired shape and size.
Slitting is an important link in the battery manufacturing process. The main function is to vertically slitting the coated film with a large width, dividing it into many, and winding it into a certain width specification of the upper and single coil. The sliced electrode pieces will be used in the subsequent battery assembly process.
The main purpose of baking is to remove the moisture and volatile organic compounds in the electrode, and improve the stability and reliability of the electrode. By baking, you can ensure that the pole sheet has better performance in the subsequent battery assembly process.
The main purpose of winding is to tightly wind components such as positive electrode, negative electrode and diaphragm together to form a cell with a certain capacity. This process has an important impact on the performance, capacity and safety of the battery. Through precise winding control, you can ensure that the material inside the battery is evenly distributed, improving the efficiency and safety of the battery.
The cashing process is a key part of the battery production process, which involves putting the cell into the battery case to protect the cell and ensure the safety and performance stability of the battery.
The battery spot welding process is a technique in which the electrode material on the battery assembly is welded together with the wire strip. It uses the resistance heating principle to heat electrodes and wires at a high temperature for an instant, so that the welding material melts at a high temperature and forms a solder joint. This process is widely used in electric vehicles, energy storage equipment and other fields.
The main purpose of the battery baking process is to remove the internal and external moisture of the battery to improve the stability and reliability of the battery. In addition, baking also helps in welding flow, ensuring the quality and reliability of the welding points, as well as simulating the aging process of the battery, accelerating the aging of the battery to verify the performance and life of the battery.
Battery manufacturing injection refers to the process of controlling the amount of liquid electrolyte and injection time, so that the liquid electrolyte is injected into the battery from the injection port. Its main purpose is to form ion channels to ensure that enough lithium ions migrate between the positive and negative electrode plates during the charging and discharging process of the battery to achieve a reversible cycle.
The welding cap process refers to the process of fixing the battery cap (also known as the battery protective cap) on the battery by welding. The main purpose of this step is to protect the inside of the battery from the damage of the external environment, such as dust, moisture, corrosion, etc., while ensuring the safe isolation between the positive and negative electrodes of the battery to prevent short circuits.
Battery manufacturing cleaning is an indispensable part of the battery production process, its purpose is to remove the dirt, impurities and residues on the surface of the battery, to ensure the cleanliness of the battery components, so as to improve the performance and life of the battery.
In the battery manufacturing process, dry storage is an important link to ensure that the internal environment of the battery is dry and moisture-free. Moisture can have a negative impact on the battery, such as reacting with lithium ions, resulting in reduced battery performance, shortened life, and may even cause safety accidents. Therefore, dry storage is an indispensable step in the battery manufacturing process.
The alignment degree of the battery mainly refers to the accuracy of the relative position and Angle between the components inside the battery (such as electrodes, pole plates, etc.). This alignment is not only related to the physical structure of the battery, but also directly affects the electrochemical performance and safety of the battery.
Shell coding is used to mark variable information such as product batch number, bar code, and two-dimensional code on the battery shell to ensure product traceability and identification.
Formation, also known as activation, is an important step in the battery manufacturing process. Its main purpose is to activate the electrochemically active substances inside the battery by certain charging and discharging means after the completion of the battery production, especially to form a stable solid electrolyte interface film (SEI film) to prevent the irreversible consumption of electrolyte and lithium ions, so as to ensure the high performance and safe operation of the battery.
OCV refers to the potential difference between the positive and negative electrodes of the battery in the open state, that is, when there is no external load connection. It directly reflects the electrochemical state inside the battery and is closely related to the state of charge (SOC), capacity and health of the battery. Therefore, OCV measurement is of great significance for evaluating battery performance, predicting battery life, and detecting battery failures.
Constant temperature storage is an important step to ensure stable battery performance and quality.
The simple understanding of battery capacity is to do capacity sorting and performance screening for batteries. By charging and discharging each lithium battery, the computer records the data of each test point, so as to obtain the capacity and internal resistance of each battery and other data to determine the quality level of the lithium battery.
Final process
Appearance full inspection, spray grade code, grade scanning inspection, packaging, finished cell storage.
EPS BATTERY SERIES
The centralized power supply for fire emergency lighting is a kind of backup power supply equipment, which provides power guarantee for emergency lighting equipment to ensure that the on-site lighting equipment can operate normally in emergency situations such as fire. Provide a long-term backup power supply to meet the needs of the emergency lighting system.
Extended reading
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