Disclosed herein are a secondary battery, a method for manufacturing the secondary battery, and a battery pack comprising the secondary battery.

The secondary battery may comprises a sealing part formed on a pouch type exterior. The sealing part may comprise a main sealing part formed along a circumference of the recess part, and a protruding sealing part protruding from the main sealing part toward the electrode assembly. The protruding sealing part may comprise a first protruding sealing part formed between the first electrode lead and the second electrode lead, and a second protruding sealing part provided at a left side of the first electrode lead.

The present application provides a method for battery charge management, which includes: acquiring current time and historical power supply data when a preset condition for switching a charge mode of a battery is met; determining a corresponding predicted charge mode according to the historical power supply data; and updating a current charge mode of the terminal according to the predicted charge mode. The method for battery charge management can reasonably predict the power supply situation of the terminal at the current time based on the historical power supply data that can characterize usage habits of a user.

The inventive concepts include at least an electrode architecture including a composite structure that includes engineered carbon nanofibers, a lithium-impervious elastic polymer, a copper collector and a lithium-containing cathode; dendrite-free, lithium metal-plated anode that includes the electrode architecture; and a lithium metal-based lithium ion battery that includes the lithium metal-plated anode, liquid and solid electrolytes and a lithium-free cathode.

A use management device includes: a traveling information acquisition part which acquires subsequent prospective traveling information about an electrically driven cart; a remaining amount information acquisition part which acquires remaining amount information about a battery; a determination section which determines, based on the prospective traveling information and the remaining amount information, whether charging of the battery is necessary; and a control section which executes a permission control of permitting a traveling motor to drive when the determination section determines that the charging of the battery is unnecessary, and executes a forbidding control of forbidding the traveling motor from driving when the determination section determines that the charging of the battery is necessary.

Provided is a method of preparing an irreversible positive electrode additive for a secondary battery, which includes mixing Li.sub.2O, NiO, and NH.sub.4VO.sub.3 and performing thermal treatment to prepare a lithium nickel composite oxide represented by Chemical Formula 1 below, wherein the NH.sub.4VO.sub.3 is mixed in an amount of 1.5 to 6.5 parts by weight with respect to a total of 100 parts by weight of the Li.sub.2O, NiO, and NH.sub.4VO.sub.3.

Li.sub.2+aNi.sub.1−b−cM.sup.1.sub.bV.sub.cO.sub.2−dA.sub.d  [Chemical Formula 1]

In Chemical Formula 1,

M.sup.1 is at least one selected from the group consisting of Cu, Mg, Pt, Al, Co, P, W, Zr, Nb, and B, A is at least one selected from the group consisting of F, S, Cl, and Br, and 0≤a≤0.2, 0≤b≤0.5, 0.01≤c≤0.065, and 0≤d≤0.2 are satisfied.

The disclosure relates to a short circuit detection method for a starting battery. The method including: acquiring status information of the starting battery in real time; estimating an SOC of the starting battery by an ampere-hour integral based on the status information; and confirming, based on an estimation result for the SOC, whether the starting battery is short-circuited.

Provided is a power supply device including a capacitor, a pre-charge circuit and a control circuit. The capacitor is connected in series with a contactor that is connected between an inverter driving a motor and a battery and that switches on or off power supply from the battery to the inverter, and is connected in parallel with the inverter. The pre-charge circuit is connected in parallel with the contactor and pre-charges the capacitor. The control circuit controls the pre-charge circuit and the contactor. The control circuit includes a sensor that measures the voltage of the battery and the voltage of the capacitor, and determines whether the pre-charge is necessary according to whether a ratio of the voltage of the capacitor to the voltage of the battery is equal to or less than a target value.

A current collector is disclosed and comprises a conductive material and an elemental metal of a group 6 metal contacting the conductive material. Also disclosed are an electrochemical cell comprising a current collector, a cathode adjacent to the current collector, and an alkali metal-based electrolyte between the current collector and the cathode, with the cathode separated from the group 6 metal by the alkali metal-based electrolyte. A method of operating the electrochemical cell is also disclosed.

An all-solid-state battery module includes an all-solid-state battery; a first electric path connected to a positive electrode of the all-solid-state battery; a second electric path connected to a negative electrode of the all-solid-state battery; a circuit board on which the all-solid-state battery is mounted; and a charge/discharge control switch connected on the first electric path or the second electric path, in which a predetermined charging terminal is connected between the charge/discharge control switch and the positive electrode or between the charge/discharge control switch and the negative electrode.

Pre-lithiation methods using lithium vanadium fluorophosphate (e.g., LiVPO.sub.4F and its derivatives) (“LVPF”) as a cathode active material in a lithium-ion secondary battery. The pre-lithiation methods include compensating for an expected loss of active lithium by selecting LVPF having a specific pre-lithiated chemistry (or a blend of LVPF selected to have a specific pre-lithiated chemistry) and selecting a total amount of the pre-lithiated LVPF. The pre-lithiation methods may include initially charging the lithium-ion secondary battery at the lower of the two charge/discharge plateaus of LVPF to release active lithium.