UNDERGROUND RESOURCE SEARCHING DEVICE AND UNDERGROUND RESOURCE SEARCHING SYSTEM

摘要

The purpose of the present invention is to provide an underground resource searching device and underground resource searching system that have a secondary battery capable of being used in high temperatures (100°C or more), do not require battery replacement, and can achieve high work efficiency. Provided is an underground resource searching device (200) provided with a burrowing part (216) that is capable of burrowing into the ground and has a sensor (218a), a power supply (218b) for the sensor (218a), and a power storage unit (218c) that is for charging the power supply and includes an all-solid-state lithium-ion secondary battery using a solid electrolyte that conducts lithium, said underground resource searching device being characterized in that: the all-solid-state lithium-ion secondary battery is provided with a positive electrode layer, a negative electrode layer, and a solid electrolyte layer provided between the positive electrode layer and negative electrode layer; the positive electrode layer and negative electrode layer include active material particles capable of absorbing and releasing lithium; and at least one from among the positive electrode layer and negative electrode layer includes a lithium conducting filler that is made to fill the space between the active material particles.