What affects the rate of drain of high temperature lithium batteries downhole? The operating temperature of a battery has a significant effect on the rate of depletion. Low temperatures reduce the ionic conductivity of the electrolyte and increase the internal resistance of the battery, which reduces the discharge capacity of the battery. High temperatures may improve ionic conductivity, but excessive…

How to choose the size of high temperature lithium battery for downhole? The capacity of the battery needs to meet the runtime and power requirements of the device. The battery size must be adapted to the space constraints of the device to ensure that it can be mounted in the intended location. The shape of the battery (e.g. cylindrical, square)…

What is the BMS system for downhole high temperature lithium batteries? The BMS system for downhole batteries is equipped with real-time monitoring and warning functions, which are able to issue timely warnings in the event of system anomalies. The BMS system is capable of realizing real-time monitoring and display of various parameters such as single cell voltage, battery pack capacity…

What is the packaging of downhole high-temperature lithium batteries? The packaging is designed with insulating materials to prevent short-circuiting and ensure that the battery terminals are adequately protected. Because lithium batteries may be at risk of fire or explosion under certain conditions, the outer packaging is made of flame retardant materials and includes an explosion-proof design. The outer package is…

How do you control the cost of using downhole batteries? Selection of high energy density and long life battery technology reduces the frequency of replacement and lowers long-term costs. At the same time, the parallel equalization control technology can curb the phenomenon of circulating current and control the current equalization to improve the capacity utilization and life of the battery…

What are the technical standards for downhole batteries? Strict requirements for the battery’s energy density, high temperature resistance and other performance indicators. Highly detectable explosion protection technology for battery safety performance. Classification, technical requirements, test methods, inspection rules and other applicability of underground electrical equipment. The level of technology, product quality, energy saving and comprehensive utilization of resources, environmental protection,…

What are the measures for waterproofing and moisture-proofing downhold batteries? Place desiccants (e.g., vapor barrier with quicklime) inside batteries and other electrical equipment to absorb any moisture that may be present. Improve the drainage system of underground distribution points and substations to ensure that there is no accumulation of water around electrical equipment. For locations where wetness cannot be avoided,…

What are the monitoring components of a downhole battery? The Battery Management System (BMS) is the core of monitoring the battery status and is responsible for real-time monitoring of the battery’s voltage, current, temperature, and other parameters to ensure that the battery operates within a safe range. Temperature sensors, voltage sensors and current sensors for real-time acquisition of battery status…

How can downhole batteries be better used in MWD systems? The physical size and shape of the battery should be matched to the battery compartment of the MWD system to ensure that it can be properly installed and secured. When assembling batteries, they need to be handled with care to ensure that the positive and negative terminals are correctly connected…

What happens when an downhold battery is punctured in an accident? There is a high probability that thermal runaway will occur in downhole batteries in the event of a puncture, and the positive and negative materials inside the battery may be short-circuited, resulting in an uncontrolled chemical reaction inside the battery that generates a large amount of heat and gas….