Five details tell you how to choose electric car lithium batteries

　　Author ：Iflowpower – Portable Power Station Supplier

With the support of national policies, and the introduction of new national standards of electric vehicles, the development of lithium-ion batteries ushered in huge opportunities. At present, the lithium-ion battery industry has formed a full-scale industry chain with high professional division of labor. So, how is the high quality electric vehicle lithium-ion battery made? Details 1: Battery points, full-computer monitoring high quality lithium-ion battery is consistently controlled! All battery scan code is divided into devices, and the computer automatically records each battery capacity, internal resistance, voltage according to the scan code content.

Second, all single batteries are all sprayed, WH, barcode, batch code, can be traceable. Detail 2: Advanced spot welding, higher craft high-quality lithium-ion battery adopts domestic advanced spot welder equipment to battery strings and connect, spot welding position and current all take computers to set parameters monitoring, welding computer through battery is turned on Automatic monitoring, domain welding, if solder is not alarm and shut down! Details 3: Finished aging test, strict standards each set of high quality lithium-ion batteries, will adopt domestic advanced aging equipment for 100% aging volume test. When the battery appears below, do not ship.

First, when the battery capacity is cycled 3 weeks, there is a decrease of more than 0.02% or more; when the high temperature aging is divided, a set of batteries is more than 15mV more than 15mV or more. Detail 4: Customizable protective plate high quality lithium-ion battery supporting domestic state-of-the-art, has a BMS protection system with research and development patented.

Effectively prevent protection of electronic components from waterproof, high temperature, oxidation, impact, etc. Details 5: Unique custom four anti-four trace battery external packaging, high quality lithium-ion battery has also design inventive patents, all outer boxes use 1 mm alloy material and high temperature spray process, to achieve anti-collision, dustproof, waterproof, Explosion: At the same time, all finished laser protection can not only guarantee product quality, but also to each user. In short, high quality lithium-ion batteries can only be done well in these five details, and they can fully protect the consistency and stability of the product.

In the future, the dealer can only win a bigger breakthrough in the lithium-ion battery!. Battery capacity battery has a rated capacity and actual capacity. The rated capacity of the battery means that the battery is supplied with the electricity at a temperature of 5 h rate to terminate the voltage at a temperature of 20 ¡ã C to the termination voltage, and is represented by C5.

The actual capacity of the battery refers to the actual power of the battery to be discharged under certain discharge conditions (which is strictly in strict, battery capacity should refer to the charging conditions). Capacity unit: mah, AH (1AH = 1000mAh). Battery internal resistance refers to the resistance from the battery through the battery inside the battery.

Emoent resistance and polarized internal resistance two parts. The internal resistance value of the battery can cause the battery discharge operating voltage to decrease, and the discharge time is shortened. Internal resistance is important to be affected by the materials of the battery, manufacturing process, battery structure and other factors.

Battery internal resistance is an important parameter that measures battery performance. The voltage open circuit is that the battery is different between the battery positive and negative electrodes when the battery is currently flowing in a non-working state. In general, the open circuit voltage is about 4.

14.2V, and the open circuit is 3.0V after discharge.

By detecting the open circuit voltage of the battery, it can be judged that the charge state of the battery can be determined. The working voltage is also known as the end voltage, refers to the potential difference between the battery is currently expanded between the battery in the circuit in the operating state. In the battery discharge operation, when the current flows inside the battery, there is no need to overcome the resistance of the internal resistance of the battery, so the working voltage is always below the open circuit voltage, and the opposite is opposite to it.

The discharge operating voltage of the lithium ion battery is around 3.6V. The discharge platform time discharge platform time refers to the discharge time discharged to a certain voltage in the battery full-electricity.

Example to measure the 3.6V discharge platform time for a ternary battery, with a constant pressure charge to a voltage of 4.2V, and stop charging is filled with charge when the charging current is less than 0.

02c, and then put on hold for 10 minutes, at any magnification discharge current. The discharge time of the current discharged to 3.6V is the discharge platform time under this current.

Because some of the operating voltage of the electrical appliance using a lithium ion battery has a voltage requirements, if it is lower than the required value, it will appear unable to work. So the discharge platform is one of the important criteria for measuring the performance of battery performance. The charge and discharge rate is charged and discharge rate means that the battery is required when the battery is released in the specified time, and 1C is equal to the battery rated capacity at the value, usually in letter C.

If the nominal rated capacity of the battery is 10ah, 10A is 1C (1 magnification), 5a is 0.5c, 100A is 10c, and so on.