Abstract: A battery pack including a plurality of battery cells, each battery cell having a positive electrode and a negative electrode on a top surface of the battery cell, the battery cells being arranged in a first direction and in a second direction crossing the first direction; a protective circuit module, the protective circuit module including a printed circuit board on the battery cells, and a plurality of conductive tabs on the printed circuit board and electrically connecting the battery cells; and a case accommodating the battery cells and the protective circuit module, wherein each of the conductive tabs include a substrate connector connected to the printed circuit board, a cell connector electrically connected to a battery cell, and a fusible link extending from the substrate connector and having a width that is smaller than that of the substrate connector.

Abstract: A method for modeling gas production in a coalbed methane gas (CBM) reservoir including (a) dividing a reservoir in a CBM development area into three-dimensional grids to form the three-dimensional grids having a plurality of cells; (b) forming at least one drilling hole in the development area and obtaining a sample for each depth in the reservoir; (c) modeling the amounts of ash, water, and gas for the plurality of cells in the three-dimensional grids; (d) modeling a pressure change over time in each of the cells in the grid under a premise in which a production well is formed in the grids; and (e) performing a Langmuir experiment for a core sample obtained from step (b).

Abstract: A battery pack including a plurality of battery cells, each battery cell having a positive electrode and a negative electrode on a top surface of the battery cell, the battery cells being arranged in a first direction and in a second direction crossing the first direction; a protective circuit module, the protective circuit module including a printed circuit board on the battery cells, and a plurality of conductive tabs on the printed circuit board and electrically connecting the battery cells; and a case accommodating the battery cells and the protective circuit module, wherein each of the conductive tabs include a substrate connector connected to the printed circuit board, a cell connector electrically connected to a battery cell, and a fusible link extending from the substrate connector and having a width that is smaller than that of the substrate connector.

Abstract: The present invention includes (a) dividing the reservoir in a coalbed methane (CBM) development area through computer modeling and thereby forming a three-dimensional grids having a plurality of cell, (b) actually forming drilling holes in the development area and thereby obtaining core samples for each depth, (c) modeling the amounts of ash, water, and gas in each of the cells, (d) modeling the pressure change over time in each of the cells under a premise in which a production well is formed in the grids, and (e) performing a Langmuir experiment for the core samples, determining a Langmuir function for a maximum amount of gas adsorption with pressure and amounts of ash and water as variables, and applying the Langmuir function to each of the cells to calculate an amount of gas detected due to pressure change over time.

Abstract: Disclosed herein is an experiment apparatus for estimating ground deformation during gas hydrate recovery. The experiment apparatus may include: a high-pressure cell having a space in which a sample containing gas hydrate is stored; a recovery member inserted into the sample so as to recover the gas hydrate contained in the sample to the outside; and a transparent region formed at one or more parts facing the space of the high-pressure cell, such that the sample stored in the space is observed from outside.

Abstract: A battery pack is disclosed. The battery pack includes a battery cell, a protection circuit module, and a temperature sensor, which are each held by a case. The case includes a dedicated space for the temperature sensor and a fixing element to fix the temperature sensor in the dedicated space.

Abstract: A battery pack is disclosed. The battery pack includes a battery cell, a protection circuit module, and a temperature sensor, which are each held by a case. The case includes a dedicated space for the temperature sensor and a fixing element to fix the temperature sensor in the dedicated space.

Abstract: Disclosed herein is an experiment apparatus for estimating ground deformation during gas hydrate recovery. The experiment apparatus may include: a high-pressure cell having a space in which a sample containing gas hydrate is stored; a recovery member inserted into the sample so as to recover the gas hydrate contained in the sample to the outside; and a transparent region formed at one or more parts facing the space of the high-pressure cell, such that the sample stored in the space is observed from outside.

Abstract: A battery pack is disclosed. The battery pack includes a battery cell, a protection circuit module, and a temperature sensor, which are each held by a case. The case includes a dedicated space for the temperature sensor and a fixing element to fix the temperature sensor in the dedicated space.