Battery Manufactory

Twenty years ago, the fuel gauge IC did not appear. The earliest design was that the single chip microcomputer detected the battery voltage through the AD port to determine the remaining battery capacity. This method of voltage detection discharges the battery small current, and the battery power error is still accurate because If the voltage gradually decreases, just set a few fixed voltage points to judge, such as 100%, 75%, 50%, 25%, 10% voltage corresponding to several capacities, such as (Figure 1). Figure 1 If the large current is discharged, it is very unsuitable, because the large current discharge, the voltage fluctuation is relatively large, just like the early mobile phones, there are two grids of electricity before the call is displayed, and the power is directly prompted during the call, please charge in time . Figure 2 This has caused misunderstandings to consumers, saying that this is a problem with your product, and there are obviously two g

After years of development, the lithium battery industry has formed a complete industrial chain with a high degree of specialization. Do you know how the lithium battery is made? The following is a brief introduction to the production process of lithium batteries : 1. Chemicals preparation. The electrode active material, binder, solvent, etc. are mixed together, fully stirred and dispersed to prepare a slurry. 2. Coating. The slurry is intermittently and evenly coated on the surface of the conveying current collector and dried to form a pole piece roll of positive and negative electrodes, respectively. 3. Cold press. After the positive and negative electrode plates are coated, the positive and negative materials are relatively sparse, and a certain pressure needs to be given to the pole pieces to compact the positive and negative electrode materials to a certain range. 4. Cut into pieces. According to the size of battery, the positive and negative electr

The battey as one of the most important parts of electric vehicles, batteries are also valued by major car companies. At present, there are mainly two types of batteries used by car companies to install vehicles: ternary lithium batteries and lithium iron phosphate batteries . However, BYD's blade battery (a new generation of lithium iron phosphate battery) was born, and car companies also have a more competitive battery option. A few days ago, in a media interview, Sun Huajun, deputy general manager of BYD's Battery, said that the high price has always been the biggest weakness of power batteries. BYD relies on blade batteries to further compress costs. The cost of blade batteries will be at least lower than 600 RMB/kWh. In CATL, another power battery provider, some media reported that the cost of its lithium iron phosphate battery pack is close to US$100/kWh (about RMB 708.5/kWh). Not only is there an advantage in terms of cost, but because of the unique

Answer: The INRUSH PEAK discharge current and continuous discharge current mainly depend on the battery cell. The overcurrent protection of the protection board only sets a safe discharge current parameter for the battery. If the battery works within this safety parameter, no safety will occur. (but if the discharge current exceeds the load current of the cell allowed, it may also shorten the battery cycle life) The role of protection circuit board (PCB) 1) Overcharge protection function: Overcharge protection function means that when the battery is charged to a certain voltage, the charger is prohibited from continuing to charge. That is, the overcharged MOS tube is put into an off state to stop charging. 2) Over-discharge protection function: Over-discharge protection function means to stop discharging the load when the battery voltage becomes low. Put the over-discharging MOS tube into the off state to prohibit its discharge. 3) Overcurrent protection functi

Both the camera drone battery and the mobile phone battery are lithium-ion batteries. The drone battery is the source of power for the device and has higher requirements for its safety performance. However, there is a difference between the two. The drone battery has a significant feature compared to the mobile phone battery --- high rate discharge. The drone battery needs a large current to discharge to meet the requirements of the drone in different environments. For example, in aerial photography, if a strong wind is encountered, the battery must be discharged with a large current to ensure the stability of the drone's position. Because of different requirements, the life of the camera drone battery is relatively short. Camera drone lithium ion battery maintenance method: 1. Do not over discharge The discharge curve of the battery shows that the voltage drops relatively quickly at the beginning of the discharge, but the voltage does not decrease quickly

Polymer lithium ion battery is a kind of lithium ion battery, but compared with liquid lithium ion battery (Li-ion), it has high energy density, more compact, ultra-thin, light weight, high safety and low cost Many obvious advantages are a new type of battery. Below we detail the advantages and disadvantages of polymer lithium-ion batteries: Polymer lithium ion batteries advantages: 1. Good safety performance The polymer lithium-ion battery adopts aluminum-plastic flexible packaging in its structure, which is different from the metal shell of the liquid cell. Once a safety hazard occurs, the liquid cell is easy to explode, and the polymer cell is only flat. 2. Small thickness, can be made thinner Ultra-thin batteries can be assembled into credit cards. Ordinary liquid lithium-ion battery adopts the manufacturing method of first customizing the shell and then plugging the positive and negative electrode materials. There is a technical bottleneck if we want m