Samsung Sdi Co., Inc.

Huntae Ro

Daepyo Lee

Peelsik Jeon

Sukki Kim

A device for maintaining an operation state of a relay with a second voltage value that is less than a first voltage value, the first voltage value being an initial driving voltage for the relay, includes: a main switch to output an output voltage to the relay by switching an input voltage according to a main operating voltage that varies according to an ON-OFF state of a first switch; the first switch to adjust the main operating voltage according to a first operating voltage that varies according to an ON-OFF state of a second switch; the second switch to control the first operating voltage according to an output voltage of a comparator; the comparator to output the output voltage by comparing a reference voltage value with a voltage of a reference node; and a third switch to control the voltage of the reference node according to an input signal.

Device for maintaining operation state of relay

A battery pack and a battery driving apparatus are disclosed. In one aspect, the battery pack includes a battery comprising at least one battery cell, and a terminal unit configured to be connected to an external apparatus. The battery pack further includes a controller configured to control the battery, be deactivated in a shut down mode, and wake up from the shut-down mode when a voltage is applied to the terminal unit and a wake-up switch configured to electrically connect the battery and the terminal unit.

Battery pack and battery driving apparatus

A battery pack includes a battery cell including an electrode assembly including a first electrode plate, a second electrode plate, and a separator that are wrapped, a case that receives the electrode assembly, a cap assembly including a cap up located on an upper part of the case and coupled to the case to be electrically connected to the electrode assembly, a first connection member electrically connected to the cap up of the battery cell, a joining portion on one area of an outer surface of the case, and a second connection member electrically connected to the joining portion at the one area of the outer surface of the case.

Battery pack having adjacent battery cells connected without welding

A battery cell sorting machine includes an inserting unit into which a battery cell is inserted, a measuring unit on which the inserted battery cell is placed, an open circuit voltage (OCV) measuring unit configured to measure an OCV of the battery cell placed on the measuring unit, a loading unit configured to discharge the battery cell placed on the measuring unit, a discharge voltage measuring unit configured to measure a discharge voltage of the battery cell discharged by the loading unit, and a control unit configured to sort battery cells placed on the measuring unit into different groups, wherein the control unit is configured to calculate a voltage differential between the OCV and the discharge voltage of each of the battery cells and to sort the battery cells having corresponding voltage differential ranges between the OCV and the discharge voltage into one group.

Sorting machine of battery cell and sorting method thereof

A lithium secondary battery including an electrode assembly; a can accommodating the electrode assembly; a cap assembly coupled with the can, the cap assembly being positioned at a topmost part of the can and having an upper cap including gas discharge holes therein; and a washer coupled with the upper cap, wherein the washer includes a body part, the body part having a flat plate shape and having a centrally disposed connection hole; and insertion parts, the insertion parts extending toward a center of the connection hole from the body part and being arranged in the gas discharge holes.

Lithium secondary battery

Disclosed is an inverter that supplies power using a battery pack mounted on a mobile device. The inverter includes a case having a receiving part in which a battery pack is to be received, a control part disposed within the case to convert a voltage of the battery pack into a preset output voltage, and an external terminal disposed outside the case. The output voltage converted by the control part is output through the external terminal.

Inverter

A battery pack is described. In one aspect it can securely connect a connecting tab extending from a protective circuit board and a sensing tab drawn out from a sensing terminal of each battery cell using a connection hook extending from a case. According to some embodiments, the battery pack may include a plurality of battery cells connected in series with respect to at least one sensing terminal arranged from a first large current terminal to a second large current terminal, a sensing terminal circuit including a sensing tab having a first throughhole formed inward and drawn out from the sensing terminal. a protective circuit module including a connecting tab having a second throughhole corresponding to the first throughhole formed inward and overlapping and electrically connected to the sensing tab. and a battery case for receiving the plurality of battery cells, the sensing terminal circuit and the protective circuit module.

Growing community of inventors

Yongin-si, South Korea

Huntae Ro