Lithium ion batteries, also known as lithium-ion batteries, are manufactured by Sony CorporationProduced and commercialized in 1991.

Compared to other rechargeable batteries such as lead-acid batteries and nickel cadmium batteries, lithium-ion batteries have the advantages of high energy density, relatively safe use, no memory effect, and do not contain heavy metal elements such as lead, cadmium, and mercury that pollute the environment. Therefore, they are a relatively environmentally friendly type of battery.

01 Policy Environment

工信部In 2019, the "New Energy Vehicle Industry Development Plan (2021-2035)" was issued, which stated that by 2025, the proportion of domestic new energy vehicle sales is expected to reach 25%, and the proportion of intelligent connected vehicle sales is expected to reach 30%.

Internationally, Europe has introduced the strictest carbon emission laws, which will encourage major car companies to accelerate their electrification transformation. European countries will promote the long-term development of the industry through direct subsidies and tax exemptions.

02Lithium battery industry chain

The lithium battery industry chain is divided into upstream materials, midstream lithium-ion batteries, downstream consumer electronics, new energy vehicles, and energy storage.

upstream

The upstream of the industrial chain is the mining and processing of raw material resources, mainly including cobalt, lithium, graphite materials, carbon materials, etc.

Upstream mainly includes positive electrode materials (lithium cobalt oxide, ternary materials, etc.), negative electrode materials, electrolytes, separators, and other auxiliary materials.

midstream

The midstream of the industrial chain mainly refers to battery cell manufacturing and modules, connecting upstream battery cell production and downstream vehicle applications.

according toIn 2020, the installed capacity of power batteries in power battery enterprises was 58.4GWh, accounting for 92% of the total installed capacity. Enterprises include CATL, Kodali, Xinwangda, EVE Energy, BYD, Guoxuan High Tech, etc.

downstream

The downstream of the lithium battery industry chain includes consumer electronics, new energy vehicles, and energy storage.

New energy vehicles are an important driving force for the current explosion of the lithium battery industry,The sales of new energy vehicles increased from 330000 units to 1.21 million units from 2015 to 2019. The demand for power batteries in future new energy vehicles will continue to grow, which will greatly increase the market demand for lithium batteries.

In addition, the application of lithium batteries in the fields of electric bicycles and energy storage has also developed rapidly.

03 Lithium battery production accident

In addition to the safety issues of battery products, people are also very concerned about the safety issues during the battery production process. When lithium battery electrolyte encounters a large amount of water, it may explode due to rapid decomposition and heat release. There is a risk of combustible or toxic gas leakage in the production workshop and other working environments of lithium battery factories Such as ammonia gas CL2、HF、 Hydrogen sulfide, hydrogen gas, carbon monoxide, hydrochloric acid, Freon, phosphoric acid, and other gases with excessive concentrations can pose hazards such as fire and poisoning.

Lithium battery accident case

On the noon of September 30, 2010, a nearly 1000 square meter warehouse on the 4th floor of a certain enterprise in Guanggu Entrepreneurship Street caught fire. The open flame ignited a large number of lithium batteries stored in the warehouse, causing an explosion that lasted for more than 20 minutes without any casualties.

04How to ensure safety in lithium battery production

In the process of environmental testing, when the battery is damaged, it will occurPossible leakage of CO, H2, H2S, on-site installationMIC2000 and MIC600It can intelligently detect low concentration gases that leak.

MIC2000gascontrollerSuitable for detecting the content of toxic gases such as carbon monoxide and hydrogen sulfide in gas leakage areas. The product adopts an integrated design of sound and light alarm, which can effectively warn of various gas leakage hazardsEnsure the personal safety of workers.

MIC600 Fixed Gas DetectorMainly used to detect the oxygen content in pipelines and containers. High detection accuracy, modular sensor design supports hot swappable replacement, and explosion-proof design can be used in explosive hazardous areas.Real time uninterrupted protection of personnel safety.