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Energy density analysis of lithium batteries, how to improve the energy density of lithium batteries?

Energy density analysis of lithium batteries, how to improve the energy density of lithium batteries?

View More+ Feb.14,2021
What are the models and specifications of Li ion battery cells?

What are the models and specifications of Li ion battery cells?

View More+ Feb.14,2021
Lithium ion battery can only charge and discharge 500 times?

Lithium ion battery can only charge and discharge 500 times?

View More+ Feb.14,2021
What are the factors that influence the price of lithium battery?

Price composition of lithium battery The price of lithium battery is mainly composed of three parts: the cell, the protection plate and the shell. At the same time, due to the power consumption and the current of the electrical appliances, the cost of the sel

View More+ Jun.14,2020
Why can't lithium-battery electric cars be popularized?

According to the relevant research report, the China Electric Bike Association published the data of China's electric bicycles from 2014 to 2016: among them, lithium-ion electric bicycles account for less than 3 million, accounting for less than 10%, and have a very low share of the entire elect

View More+ May.25,2020
Why did graphene become a scam in China?

But while graphene's prospects are increasingly promising, there is a very different argument: graphene is a hoax in China. In March 2015, Chongqing Green Intelligent Technology Research Institute of Chinese Academy of Sciences announced the launch of a g

View More+ May.25,2020
Misunderstanding of mobile phone charging

Misunderstanding of mobile phone charging A lot of friends think that the first three times that the new mobile phone just bought back should be charged for more than 12 hours, so as to maximize the battery life. In fact, this concept is out of date. The so-c

View More+ May.25,2020
Which is better, lithium battery or lead-acid battery electric vehicle?

Lithium batteries are better. Whether it is volume specific energy or weight specific energy, lithium battery is more than three times higher than lead-acid battery. Lithium batteries are smaller and lighter. Long cycle life. The key to running is the battery

View More+ May.25,2020
How to activate the lithium battery when it "starves to death"?

Many people have bad habits, often people do not put the electric car battery at home, the air switch does not turn off, put a few months do not ride. When I came back for a few months, I found that the car had no power and could not be charged. The charger is plugged in, but it is always green, eve

View More+ May.25,2020
show you which is better, lead-acid battery or lithium battery

With the update of battery technology of electric vehicle, the development and application of lithium battery are increasing year by year. However, it is only on the rise. Limited by the performance, cost performance and other reasons of lithium battery, it still has a long way to go to replace the

View More+ May.25,2020
Analysis and forecast of the general situation and production and operation of lithium extraction enterprises in South America salt lake from 2019 to 2025

Analysis and forecast of the general situation and production and operation of lithium extraction enterprises in South America salt lake from 2019 to 2025 One , General situation

View More+ May.25,2020
How much is the best charge for Apple mobile phone?

1. In daily use, Apple's mobile phone is better not to use automatic shutdown, but to charge the mobile phone when the power of the mobile phone is 20% - 40%, which can be unplugged when it is full. 2. Early cell phones used nickel cadmium and nickel hydr

View More+ May.22,2020
Correct use of lithium battery

Lithium battery is a more and more widely used energy storage conversion device, because its excellent electrochemical performance realizes the market application scenario of small medium large. When we talk about the correct use of lithium battery, we usually refer to the small application, i.e. co

View More+ May.22,2020
What are the factors that influence the price of lithium battery? abstract The price of lithium battery is mainly composed of three parts: cell, protection plate and shell. At the same time, due to the power consumption and current of electrical appliances, the selection of materials (conventional nickel sheet, formed nickel sheet, copper nickel composite sheet, jumper sheet, etc.) for connecting pieces between cells will affect the cost. Different connectors Price composition of lithium battery The price of lithium battery is mainly composed of three parts: cell, protection plate and shell. At the same time, due to the power consumption and current of the electric appliances, the cost of the selection of connecting pieces between the cells (conventional nickel piece, formed nickel piece, copper nickel composite piece, jumper piece, etc.) will be affected. Different connectors (such as aviation plug, from ten yuan to thousands of yuan) are also possible It has a great impact on the cost, as well as different pack processes. Factors influencing the price of lithium battery 1、 Selection of electric core: First, the selection of different materials will affect the price of the whole lithium battery. According to the different cathode materials, lithium manganate (3.6V), lithium cobaltite (3.7V / 3.8V), nickel cobalt lithium manganate (commonly known as ternary, 3.6V), lithium iron phosphate (3.2V), lithium titanate (2.3V / 2.4V) and other materials, the voltage platform, safety factor, cycle use times, energy density ratio, operating temperature of different materials are different. Second, the prices of different brands of electric core will vary greatly. The total price gradient can be divided into: special electric core (including ultra-low temperature, ultra-high temperature, ultra-high magnification, and heteromorphic), Japanese Series (Panasonic, Sanyo, Sony), Korean series (Samsung, LG), domestic series (domestic series is divided into one line (Lishen, bik, BYD, ATL), two lines, and even five lines and six lines), the same as The price difference of different brands of electric core in material system will be very large, and the quality (safety type, consistency, stability) of each brand of electric core through the survival of the fittest in the market is basically proportional to the price. 2、 Demand and design of lithium battery PCM PCM design can be divided into: basic protection, communication, BMS Basic protection: the basic protection includes overcharge, over discharge, over-current and short-circuit protection, and the over temperature protection can be added according to the product demand Communication: the communication protocol can be divided into I2C, RS485, RS232, CANbus, HDQ, SMBus, etc. there is also a simple power display, which can be indicated by LED with a power meter. BMS: BMS is the first letter combination of batterymanagementsystem, which is called battery management system, commonly known as battery nanny or battery housekeeper. It is mainly for intelligent management and maintenance of each battery unit, to prevent over charging and over discharging of battery, to extend the service life of battery, and to monitor the state of battery. Its main functions include: real-time monitoring of battery physical parameters; battery state estimation; online diagnosis and early warning; charge, discharge and precharge control; balance management and thermal management. The secondary system is mostly used in electric vehicle batteries. 3、 Demand and design of lithium battery shell Lithium battery shell design can be divided into: PVC heat seal, plastic, metal PVC heat seal: what kind of enclosure is used for the external part of the battery pack mainly depends on the specific needs of the customer's products. For the packaging form of PVC heat seal, it is generally applicable to the case where the number of parallel cells is small and the overall weight is light (≤ 2kg). However, for batteries with an overall weight of more than or equal to 1kg, it is necessary to add a fixed bracket between the cells and a glass fiber board around the battery, and then use PVC heat seal. Plastic: the plastic shell is used, mainly after different battery groups are finalized, the shell involved may need to be mold opened, and the mold cost is not a small expense. For example, in the early stage of development, the product is not finalized, you can use the hand plate shell proofing (the strength of the hand plate is not as strong as the material strength after mold opening and finalization), and the requirements for the material and technology of the shell (especially with the three proofing requirements) are different, but also Impact costs. Metal: the metal shell is the same as the plastic shell. Before the product is not finalized or the quantity demand is not much. It is recommended to use sheet metal to make samples. This is mainly because the sample preparation and delivery period is short. If the batch is large, it is also recommended to open the mold. For the metal shell with waterproof level requirements, it will also greatly affect the cost, and for the metal shell with special materials (such as titanium alloy, etc.), the cost will be higher. The cost of lithium battery is mainly composed of cell, PCM and structural parts. In addition, pack cost, aging cost and management cost of the enterprise are required. At the same time, the price of lithium battery will vary greatly due to the different requirements of product technical difficulty, purchase amount and defect rate!

What are the factors that influence the price of lithium battery? abstract The price of lithium battery is mainly composed of three parts: cell, protection plate and shell. At the same time, due to the power consumptio

View More+ May.22,2020
Lithium iron phosphate battery, lithium manganate, lithium cobaltite and ternary lithium battery

Lithium iron phosphate battery, lithium manganate, lithium cobaltite and ternary lithium battery are all branches of lithium-ion battery. Its performance is mainly applicable to power applications. At this time, it is called lithium iron phosphate power battery, also known as lithium iron battery. T

View More+ May.22,2020

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