Temperature Sensor for Energy Storage Battery
NTC single-ended glass-sealed resistor/PT100/1000 platinum resistor (can be customized);
Material: silicone shell/FFC flat cable/three-core audio plug;
Operating temperature range: -20~200℃;
Response speed: T≈6s;
Installed in the cells of energy storage products or on the busbar of battery packs, it is used for multi-point temperature detection of cells or battery packs;
A variety of installation structures and sizes are available;
Strong moisture resistance, high stability and high pressure resistance.
With the rapid development of electrochemical energy storage technology and the widespread application of energy storage power stations, energy storage safety has become an important issue. In recent years, relevant national agencies have successively issued energy storage fire safety policies and standards to ensure the safe operation of energy storage power stations.
The release of the national standard "Safety Regulations for Electrochemical Energy Storage Power Stations" will be implemented from July 1, 2023. It further standardizes the technical safety requirements for equipment and facilities of energy storage power stations, as well as the safety requirements for operation, maintenance, inspection and testing. This standard applies to many types of electrochemical energy storage power stations, including lithium-ion batteries, lead-acid (carbon) batteries, flow batteries, and water electrolysis hydrogen production/fuel cell energy storage power stations.
Especially in terms of energy storage fire safety, traditional energy storage fire protection solutions may not be able to solve fundamental safety risks due to the continuous chemical reactions inside the battery that may cause fires and the risk of re-ignition and explosion. Therefore, the formulation of relevant policies and standards in the field of energy storage fire protection has become particularly important.
The rapid growth of the energy storage industry is accompanied by the occurrence of energy storage power station accidents, and energy storage safety issues have received more attention. As an important line of defense for the safety of electrochemical energy storage power stations, energy storage firefighting is facing huge demands and challenges. By formulating relevant policies and standards and strengthening the research and development and application of energy storage firefighting technology, the safety of energy storage power stations can be improved and the safety of personnel and property can be protected.
The field of energy storage fire protection is indeed in its infancy, the market size is relatively small, and it does not fully match the growth rate of the energy storage industry. However, with the increasing emphasis on the safety of electrochemical energy storage, the construction standards and requirements for fire protection equipment of energy storage systems are improving, which will gradually increase their unit value.
According to data from the China Energy Storage Industry Association (CNESA), China's cumulative installed capacity of energy storage is expected to reach 141GW by 2026. At the same time, it is expected that by 2025, the market value of each additional 1GW of energy storage fire protection will increase from 120 million yuan in 2021 to 200 million yuan.
It is predicted that by 2025, China's energy storage power station fire protection market will reach 4.675 billion yuan, and the global major market size will reach 26.1 billion yuan. From 2021 to 2025, the compound annual growth rate (CAGR) is expected to reach 114.9%. By 2023, the energy storage firefighting market is expected to experience rapid growth.
It is estimated that by 2025, China's newly installed energy storage capacity is expected to account for 30% of the world's newly installed capacity. Energy storage fire protection companies will fully benefit from cooperation with domestic energy storage system integration manufacturers.
These data show that the energy storage firefighting market has huge potential. As energy storage safety standards and requirements improve, the market size and unit value will gradually increase. Energy storage firefighting companies are expected to gain more business opportunities and development space through cooperation with energy storage system integration manufacturers.
Energy storage fire protection overview
Fires in energy storage systems and electric vehicle batteries are both caused by battery abuse, which causes thermal runaway of a single battery, leading to large-scale fire accidents. However, the fire spread characteristics of the two are not exactly the same. In electric vehicle fires, the temperature of a certain thermal runaway battery cell rises, causing fires in adjacent battery cells or modules. Compared with electric vehicle power batteries, energy storage system fires are more hazardous. Energy storage systems usually consist of dozens or even dozens of modules. Thermal runaway of a certain single cell usually leads to the spread of fire between modules, and the probability of thermal runaway is higher.
To solve the security problem of energy storage systems, it is necessary to build a line of defense from four levels.
Establish an active collaborative safety prevention and control system "from prevention to elimination" from efficient thermal management technology - safety early warning technology - safety protection technology - fire safety technology. First of all, thermal runaway warning is the front line of defense for the safety of energy storage power stations. Secondly, the material safety of the battery body is the second line of defense for the safety of energy storage power stations. Process safety is the third line of defense, which is used to monitor the safety status of lithium batteries during operation and provide early warning when abnormalities occur. The final fourth line of defense is fire safety, which means blocking the spread of a fire, extinguishing it and preventing re-ignition.
Energy storage fire protection industry chain.
The cost of energy storage fire protection accounts for about 3% of the cost of the energy storage system, which includes the purchase, installation and maintenance of energy storage fire protection products.
The upstream of the industrial chain of energy storage fire protection products involves multiple raw materials, including structural parts, electronic components, chassis and fire extinguishing agents. These raw material suppliers provide the necessary components and materials for the manufacturing and assembly of energy storage fire protection products. The downstream application scenarios are diversified. In addition to the main field of energy storage power stations, it also includes new energy vehicles, electric bicycles and household energy storage. These application scenarios require safety protection and fire protection measures for energy storage systems, so energy storage fire protection products also have certain demand in these fields.
With the rapid development of the energy storage industry and the increase in energy storage power stations, the market for energy storage fire protection products is also gradually expanding. In order to ensure the safe operation of the energy storage system, investing in energy storage fire protection is necessary and important, and the energy storage fire protection product industry chain will further develop and grow.
Fires in energy storage systems and electric vehicle batteries are both caused by thermal runaway of a certain battery cell and may cause large-scale fire accidents. However, there are differences in fire spread characteristics between the two. In electric vehicle fires, when a battery cell experiences thermal runaway and heats up, it will trigger a fire in adjacent battery cells or modules. Fire usually spreads from one battery cell or module to other adjacent cells or modules.
In comparison, energy storage system fires are more harmful. Energy storage systems are usually composed of dozens or even hundreds of modules. When a battery cell experiences thermal runaway, it is likely to cause fire to spread among the entire modules. Due to the large scale of the energy storage system, the probability of a single thermal runaway event is also high.
In view of the security issues of energy storage systems, it is recommended to build a defense line from four levels, including efficient thermal management technology, safety early warning technology, safety protection technology and fire safety technology. These measures aim to establish a proactive and coordinated security prevention and control system to achieve all-round security protection from prevention to response.
First of all, thermal runaway warning is the front line of defense for the safety of energy storage power stations. Through monitoring and early warning systems, signs such as abnormal heat accumulation and temperature rise in the battery can be detected in a timely manner.
Secondly, the material safety of the battery body is an important aspect of the safety of energy storage power stations. Selection and design of battery materials and structures with high safety performance are key.
Process safety is the third line of defense. By monitoring the operation process of lithium batteries, the temperature, voltage, current and other parameters of the battery can be detected in real time. Discover abnormal situations and take timely measures for early warning and response.
Finally, fire safety is the fourth line of defense, including fire containment, fire extinguishing and re-ignition prevention measures to prevent the spread of fire and control the fire within a local scope.
By establishing comprehensive safety prevention and control measures at these four levels, the safety performance of the energy storage system can be improved and the occurrence and spread of fire accidents can be reduced.