Samsung Sdi Co., Inc.

Hyunghoon Lim

Junhyung Lee

Jinwook Kang

Sungkoo Kang

Jisu Kim

A battery pack includes a battery including at least one battery cell, a DC/DC converter configured to generate first control power from battery power of the battery, an OR circuit configured to output control power having a higher voltage level from among second control power received from an external power supply device through a first external terminal and the first control power, a power supply circuit configured to generate driving power by using the control power received from the OR circuit, a control circuit driven by the driving power, and a first switch connected between an output terminal of the DC/DC converter and a second external terminal and controlled by the control circuit; the battery pack supplies the external control circuit with the control power generated by the DC/DC converter in the event of a power failure.

Battery pack

According to some aspects, an apparatus and a method for controlling a temperature of a battery are disclosed. A cooling fan may be controlled according to a temperature of the battery, thereby preventing a reduction in performance of the battery. According to one aspect, the apparatus includes a temperature sensor configured to output an analog resistance value as a temperature of batteries of a battery pack. The apparatus further includes a battery temperature control part configured to convert the analog resistance value of the temperature sensor into a digital signal to control the temperature of the battery pack, and a cooling fan that is operated by a signal from the battery temperature control part. The battery temperature control part may include a defect discrimination part that senses a defective operation of the cooling fan.

Growing community of inventors

Yongin-si, South Korea

Hyunghoon Lim