An energy storage apparatus includes an energy storage unit including an energy storage device, the energy storage apparatus including a substrate unit including a substrate electrically connected to the energy storage unit and a substrate accommodating unit accommodating the substrate, the substrate unit being attached to the energy storage unit. The substrate accommodating unit includes a gripping unit to grip the energy storage apparatus.

An energy storage apparatus includes an energy storage unit including a plurality of energy storage devices, a first power cable connected to one of a positive electrode connection terminal of the energy storage unit and a negative electrode connection terminal of the energy storage unit and extending from an end portion of the energy storage unit to an outside of the energy storage unit, and a second power cable connected to the other of the positive electrode connection terminal and the negative electrode connection terminal and extending from the end portion of the energy storage unit to the outside of the energy storage unit. The first power cable includes a first connector. The second power cable includes a second connector including a structure which allows direct connection to the first connector. The first power cable is placed in a posture which inhibits connection between the first connector and the second connector.

An energy storage apparatus includes: an energy storage unit including an energy storage device; a substrate electrically connected to the energy storage unit; a cover disposed on one side in a first direction of the substrate; and a cable in which one end is electrically connected to the energy storage unit while the other end is connected to an external conductive member of the energy storage apparatus. The cable is disposed on one side in the first direction of at least a part of the cover while connected to the external conductive member.

An energy storage apparatus includes: a plurality of energy storage devices each including a gas release valve, the plurality of energy storage devices being arranged along a predetermined direction in a posture where the gas release valves are directed in the same direction; an exhaust portion disposed on the gas release valves of the plurality of respective energy storage devices, the exhaust portion forming an exhaust path for a gas discharged from the gas release valves; and a housing accommodating the plurality of the energy storage devices and the exhaust portion, wherein the exhaust portion includes an exhaust port portion that protrudes from the housing and forms an outlet portion of the exhaust path.

A logging system and method for operating a logging system are typically used in a wellbore. The logging system may include a logging instrument including a rechargeable energy storage and logging electronics, and a cable configured to trickle charge the rechargeable energy storage. The rechargeable energy storage may include an ultracapacitor. The rechargeable energy storage may be trickle charged through the cable from a remote power source.

An onboard power supply device includes capacitors, a holder holding the capacitors, a mounting board having the capacitors mounted thereon and having the holder fixed thereto, and a heat-generating component mounted on the mounting board. Each of the capacitors includes a capacitor body and a lead terminal extending from the capacitor body. The holder includes a base part, first holding parts bundled by the base part and holding the capacitors, second holding parts each connected to a corresponding one of the first holding parts, and a fixing part extending from an outer edge of the base part toward the mounting board and fixed to the mounting board. The capacitor body of each of the capacitors is held by a corresponding one of the first holding parts. The lead terminal of each of the capacitors is held by a corresponding one of the second holding parts. The mounting board has a through-hole therein through which the lead terminal passes. The through-hole is connected to the lead terminal. The corresponding one of the second holding parts has a holding through-hole therein extending along a through-axis coinciding with the through-hole. An inner wall of the holding through-hole contacts the lead terminal. This onboard power supply device has a small size.

A method for depassivation of an energy storage device having an anode, a cathode and a core with an electrolyte, the method including: detecting that a first predetermined event related to a buildup of passivation has occurred with regard to the energy storage device; switching between a positive input voltage and a negative input voltage provided to the anode at a frequency sufficient to depassivate the anode; discontinuing the switching when a second predetermined event related to passivation has occurred.

A method for depassivation of an energy storage device having an anode, a cathode and a core with an electrolyte, the method including: detecting that a first predetermined event related to a buildup of passivation has occurred with regard to the energy storage device; switching between a positive input voltage and a negative input voltage provided to the anode at a frequency sufficient to depassivate the anode; discontinuing the switching when a second predetermined event related to passivation has occurred.

A method for monitoring one or more characteristics of an ultracapacitor is provided. The method includes obtaining a plurality of voltage measurements. Each of the voltage measurements can be obtained sequentially at one of a plurality of intervals. Furthermore, each of the voltage measurements can be indicative of a voltage across the ultracapacitor. The method can include determining an actual voltage step of the ultracapacitor based on two consecutive voltage measurements of the plurality of voltage measurements. The method can further include determining whether the actual voltage step exceeds a threshold voltage step of the ultracapacitor. Furthermore, in response to determining the actual voltage step exceeds the threshold voltage, the method can include providing a notification associated with performing a maintenance action on the ultracapacitor.

A non-aqueous electrolyte secondary battery including an electrode body having a positive electrode and a negative electrode, a non-aqueous electrolyte, and a battery case is provided. The battery case includes a case body having an opening and configured to house the electrode body and the non-aqueous electrolyte, and a lid configured to close the opening. The lid includes a plate-shaped lid body, a valve portion configured to open when the internal pressure of the battery case is higher than a valve opening pressure determined in advance, and a degassing portion configured to set to be an opening pressure higher than the valve opening pressure of the valve portion.