Abstract: Discussed is a welding inspection apparatus for battery modules capable of applying an alternating current to a bank constituted by two or more battery cells connected in parallel and a battery module constituted by one or more banks connected in series to calculate an impedance and a resistance value of each of the one or more banks, and a method of inspecting welding of the battery module using the welding inspection apparatus.

Abstract: A sensor device includes: a sensor panel including sensors arranged in a matrix form and sensor lines electrically connected to the sensors one-to-one; and a sensor driver configured to receive sensing signals from the sensors through the sensor lines, wherein the sensor driver is configured to simultaneously receive a first sensing signal from a first sensor using a first reference signal and a second sensing signal from a second sensor using a second reference signal, wherein the first reference signal and the second reference signal have a same waveform, a phase of the second reference signal is different from a phase of the first reference signal, and wherein a phase of the second sensing signal is different from a phase of the first sensing signal.

Abstract: A data receiving device may include a dummy stage block. The dummy stage block may include m dummy stages, wherein m is a natural number greater than or equal to two. Each of the m dummy stages may be configured to remove inter-symbol interference (ISI) from a dummy input signal using dummy coefficient information to generate a dummy output signal free of the ISI. Each of the m dummy stages may be further configured to output the dummy output signal. A normal stage block may include n normal stages, wherein n is a natural number greater than or equal to two. Each of the n normal stages may be configured to remove ISI from an input signal using coefficient information to generate an output signal free of the ISI and may be further configured to output the output signal.

Abstract: Discussed is a battery cell sorting apparatus including a battery cell pickup member configured to move a battery cell to a desired position; and a guide member configured to guide the battery cell pickup member in a first direction, wherein the battery cell pickup member includes: a pickup body portion, a magnet located at a lower surface of the pickup body portion, the magnet being configured to lift the battery cell, and a voltage measurement unit located at a lower surface of the magnet, the voltage measurement unit being configured to measure a voltage of the battery cell.

Abstract: A battery cell stack includes a plurality of battery cells, a temperature adjuster configured to prevent an increase in temperature of the battery cell stack due to a high external temperature, a heat plate disposed at a lower surface and a side surface of the battery cell stack, a pack case configured to receive the battery cell stack, the temperature adjuster, and the heat plate therein, and a cooling fan configured to discharge heat in the pack case to the outside. The battery cell stack is configured such that, when external power is supplied to an electrical apparatus connected to the battery pack, the battery cell stack does not supply current to the electrical apparatus, and when no external power is supplied to the electrical apparatus, the battery cell stack supplies current to the electrical apparatus.

Abstract: Discussed is a battery cell sorting apparatus including a battery cell pickup member configured to move a battery cell to a desired position; and a guide member configured to guide the battery cell pickup member in a first direction, wherein the battery cell pickup member includes: a pickup body portion, a magnet located at a lower surface of the pickup body portion, the magnet being configured to lift the battery cell, and a voltage measurement unit located at a lower surface of the magnet, the voltage measurement unit being configured to measure a voltage of the battery cell.