High temperature tolerant battery system for powering oil drilling logging equipment and control method

By using a high-temperature resistant battery system with multi-layer composite shell encapsulation and graded phase change materials, combined with a microcontroller to dynamically adjust discharge parameters, the problem of traditional lithium batteries failing in high-temperature environments has been solved, achieving efficient and stable battery power supply in oil drilling.

CN122246329APending Publication Date: 2026-06-19GUANGDONG FEIKANGDE NEW ENERGY TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG FEIKANGDE NEW ENERGY TECHNOLOGY CO LTD
Filing Date
2026-03-27
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional lithium batteries are prone to failure in the high-temperature environment of oil drilling. It is difficult to balance the contradiction between environmental high temperature resistance and resistance to self-generated heat in a limited space. Existing high-temperature resistant battery solutions are bulky and cannot dynamically adjust the discharge strategy.

Method used

The high-temperature resistant battery system, which is encapsulated in a multi-layer composite shell, contains a cell with graded phase change material and ionic liquid gel electrolyte. Combined with a microcontroller to dynamically adjust discharge parameters, it achieves a match between the heat generated by the cell and the heat absorbed by the phase change material.

Benefits of technology

It can operate stably in high-temperature environments of 180℃~220℃, extend the single well operation time by 30%~50%, extend the battery cell cycle life by more than 2 times, and realize intelligent energy management.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application discloses a high-temperature resistant battery system and control method for powering oil drilling logging equipment. The system includes an encapsulation unit, a high-temperature resistant battery cell unit, and a protection circuit unit. The encapsulation unit includes a multi-layer composite shell and multiple independent compartments disposed inside the shell, with each compartment filled with a graded phase change material. The high-temperature resistant battery cell unit includes multiple high-temperature resistant batteries. The protection circuit unit includes a microcontroller and wide-bandgap semiconductor power devices. The microcontroller is configured to dynamically adjust the on / off state of the wide-bandgap semiconductor power devices based on the current operating stage and real-time temperature data to regulate the discharge parameters of the high-temperature resistant battery cell unit and match the heat generation rate of the high-temperature resistant battery cell with the heat absorption rate of the graded phase change material. This achieves a leap from passive heat insulation to active thermal matching, reduces the temperature fluctuation of the battery cell, and effectively solves the problems of high-temperature failure and low energy utilization of traditional downhole batteries.
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