High Capacity high discharge current High-Temperature Lithium-Thionyl Chloride Batteries: ER341245S

High Capacity high discharge current High-Temperature Lithium-Thionyl Chloride Batteries: ER341245S

With the continuous advancement of technology, the demands for high temperature batteries in various industries, especially those operating under extreme conditions, have increased significantly. Conventional industrial disposable lithium batteries, designed for operation within a temperature range of -30 to 85°C, often fail to meet the requirements for high-temperature resistance (100-200°C) and high current output. To address this gap, the lithium-thionyl chloride (Li-SOCl2) electrochemical system has emerged as a promising solution.

The ER341245S battery, a prime example of this technology, utilizes a unique combination of materials and manufacturing techniques to deliver exceptional performance under harsh conditions. Its negative electrode is composed of metallic lithium, while the positive electrode employs conductive carbon black as a carrier and sulfur dioxide chloride (SOCl2) as the active material and solvent. Lithium salts serve as the electrolyte, enhanced by special additives, while an ultrafine glass fiber membrane acts as the battery separator.

The battery's robust construction is further enhanced by the use of high-quality stainless steel for the casing and cover. The positive terminal employs a metal-to-glass sealing technique, ensuring reliable connections and sealing. The entire battery undergoes a rigorous laser welding process, resulting in a fully sealed unit that can withstand harsh environments. This robust design allows the battery to maintain its performance for over ten years when stored at temperatures ranging from 20 to 25°C.

The lithium-thionyl chloride electrochemical system stands out for several reasons. Firstly, it boasts a high and stable voltage. With a rated voltage of 3.6V, it maintains a voltage range of 3.4-3.6V under high-temperature loads. The discharge curve remains remarkably flat, with a sudden change only occurring near the end of discharge (at approximately 2.0V). Secondly, the system offers a high energy density, reaching an impressive 600Wh/kg. This translates into longer operating times and reduced maintenance requirements.

Moreover, the operating temperature range of lithium-thionyl chloride batteries is remarkably wide. Standard high-temperature batteries can function from -20 to +125°C, while medium-to-high-temperature variants operate between -20 and +155°C. For extreme applications, special designs can achieve temperatures ranging from 125 to 180°C, and even up to 200°C with customized configurations. This versatility makes these batteries suitable for a wide range of applications.

Applications of Lithium-Thionyl Chloride Batteries

Oil and Gas Industry

In the oil and gas industry, lithium-thionyl chloride batteries play a crucial role in various downhole instruments. For instance, they are widely used in electronic pressure gauges and flow meters, as well as logging-while-drilling (LWD) and measurement-while-drilling (MWD) tools. These devices require reliable power sources that can withstand the extreme temperatures and pressures encountered during drilling operations. By utilizing lithium-thionyl chloride batteries, these instruments can provide accurate and timely data, enhancing the efficiency and safety of oil and gas exploration.

Moreover, the ability to customize battery configurations and install connectors based on user requirements makes these batteries an ideal choice for other downhole high-temperature instruments. This flexibility ensures that the batteries can be seamlessly integrated into existing equipment, minimizing the need for modifications or replacements.

Automotive Industry

In the automotive industry, lithium-thionyl chloride batteries are gaining popularity for applications such as tire pressure monitoring systems (TPMS) and diesel engine cylinder testing. TPMS systems rely on sensors to monitor tire pressure and temperature, providing valuable data that can help drivers maintain optimal vehicle performance and safety. Lithium-thionyl chloride batteries provide the necessary power for these sensors, ensuring reliable and accurate readings even under extreme temperatures.

Similarly, diesel engine cylinder testing requires precise measurement of pressure and temperature during the combustion process. Lithium-thionyl chloride batteries, with their high-temperature tolerance and stable performance, are ideal for powering the sensors and data acquisition systems used in these tests.

Geothermal Industry

In the geothermal industry, high-temperature detection instruments play a crucial role in monitoring and maintaining the efficiency of geothermal power plants. Lithium-thionyl chloride batteries are the perfect choice for powering these instruments due to their ability to operate reliably in temperatures ranging from 125 to 180°C. These batteries provide the necessary power to ensure continuous and accurate monitoring of geothermal systems, enabling operators to identify and address potential issues in a timely manner.