Samsung Sdi Co., Inc.

Beomgyu Kim

Jinwan Kim

Hanseok Yun

Euijeong Hwang

Susumu Segawa

Jongwoon Yang

Sesub Sim

Tetsuya Okada

Testuya Okada

Segawa Susumu

A battery multi-series system and a communication method thereof. The battery multi-series system includes a master battery management system managing a battery; and a block master battery management system connected to the master battery management system and receiving data from at least one slave battery management system and storing the received data, wherein the master battery management system receives data periodically from the block master battery management system.

Battery multi-series system and communication method thereof

An analog switch and a battery pack using the same are provided. The analog switch can compensate for temperature dependence of voltages measured from a battery cell before applying the measured voltages to an analog-to-digital (A/D) converter. In an embodiment of the analog switch, a first diode is coupled in a backward direction from a flying capacitor, which is coupled to the A/D converter, to correspond to a second diode packaged therewith as a single set. The first diode is positioned in a battery cell voltage input path to store battery cell voltage values in the flying capacitor, while the second diode suppresses a temperature-related difference caused by the first diode to voltages measured from the battery cell.

Battery pack with analog switch

A battery pack and a method of operating the battery pack are disclosed. The battery pack includes a plurality of battery cells and is configured to open a terminal of the battery if an open circuit is detected in a line connecting battery cells.

Battery pack and line open detecting method thereof

A control circuit for a secondary battery is disclosed. The control circuit comprising a measuring unit electrically connected with a single connection to a current carrying line for charging and discharging the battery, wherein the measuring unit is configured to generate a voltage value corresponding to current in the current carrying line.

Control circuit of secondary battery

A battery pack and a driving method thereof. The battery pack includes a battery cell; a charge switch and a discharge switch installed in a charge/discharge line of a battery cell; and a microcontroller to sense and store voltages of the battery cell, to compare the voltages of the battery cell before and after the microcontroller is reset, and to controls the charge switch and the discharge switch based on the sensed voltages of the battery cell such that the microcontroller turns off only one of the charge switch and the discharge switch when there is a change between the voltages of the battery cell before and after the microcontroller is reset.

Battery pack and driving method thereof

A battery pack and a method of sensing a voltage of the battery pack are disclosed. The battery pack has more battery cells than an individual cell voltage sensing unit can sense the voltages of. The additional battery cells are sensed using a multi-cell voltage sensing unit and digital processing.

Battery pack and method of sensing voltage of battery pack

A battery pack is disclosed that includes a plurality of battery cells and a plurality of temperature sensors. Each of the temperature sensors is for sensing a temperature of a corresponding one or more of the battery cells to generate a temperature signal, and the temperature sensors are divided into groups of temperature sensors. A plurality of A/D converters is provided, and each of the A/D converters is coupled to a corresponding one of the groups of temperature sensors to convert the temperature signal into a digital signal. An identification signal module is coupled to the A/D converters for applying different identification signals to the plurality of A/D converters, respectively. A controller is coupled to the A/D converters for receiving the identification signals and the temperature signal, and for identifying a temperature of each of the battery cells through the identification signals.

Growing community of inventors

Yongin-si, South Korea

Beomgyu Kim