Samsung Sdi Co., Inc.

Youngdong Seo

Seotaek Oh

Gilchoun Yeom

A battery pack and an electric vehicle including the battery pack, the battery pack including a battery, the battery including at least one battery cell that is rechargeable and dischargeable, wherein the battery supplies power to a load; a controller configured to control an amount of power to be used by the load; and a battery manager configured to measure a remaining capacity of the battery and to provide information about the measured remaining capacity to the controller.

Battery pack and electric vehicle including the same

A battery pack and a charge-controlling system of an electric vehicle including the same are provided. The battery pack includes a battery module including at least one rechargeable battery cell, a charge mode determiner configured to analyze characteristics of a charging current to the battery module, and configured to determine whether the battery pack is in a first charge mode or in a second charge mode, and a protector configured to set a protection current level of the battery module corresponding to the first charge mode or corresponding to the second charge mode, and configured to interrupt the charging current when a level of the charging current is higher than or equal to the protection current level corresponding to the respective one of the first charge mode or the second charge mode.

Battery pack and charge-controlling system of electric vehicle including the same

A battery pack includes a battery, a battery management system (BMS), a charge switch, a discharge switch, and a tilt sensor. The BMS monitors voltage and current states of the battery and control charge and discharge operations of the battery. The charge and discharge switches operate based on control signals from the BMS. The BMS measures a variation in tilt angle of the battery pack or a load based on tilt information sensed by the tilt sensor, and turns off the discharge switch when the tilt angle variation is equal to or less than a first critical value for a preset time period. The load may be an electric vehicle or another type of load.

Battery pack and electric bike including the same

A battery pack includes a battery, a battery management system (BMS), and an inertia sensor. The battery includes at least one battery cell to supply electricity to a load. The BMS monitors voltage and current states of the battery and to control charge and discharge operations of the battery. The BMS determines a moving state of the load based on inertia information from the inertia sensor and outputs a control signal to interrupt flow of a discharge current of the battery when the discharge current is equal to or greater than a first critical current value for a preset time period and the load is determined to be stationary.

A method of measuring current of a battery pack includes a rechargeable battery, a main switch connected in series to the battery, and a pre-charge switch connected in parallel to the main switch. The method includes: turning on the pre-charge switch and turning off the main switch; measuring a voltage between both terminals of the main switch; calculating a pre-charge current flowing through the pre-charge switch by taking into consideration the resistance of a pre-charge resistor connected in series to the pre-charge switch; measuring current of the battery pack using a current sensor; comparing the current measured using the current sensor with the pre-charge current; and correcting an offset of the current sensor based on results of the comparison.

Method of measuring battery pack current and correcting offsets of a current sensor

A battery pack and a method for controlling the same are disclosed. In one aspect, the battery pack includes a master battery management system (BMS) and a plurality of battery modules each including a slave BMS connected to the master BMS. In another aspect, the method includes first determining the number of slave BMS' electrically connected to the master BMS, receiving a plurality of voltage values of the battery modules from the slave BMS&#x2032; and first calculating an average value of the voltage values. The method also includes second determining a terminal voltage of the battery pack, comparing the average voltage value with the terminal voltage of the battery pack to calculate the number of the battery modules connected in series, and third determining a first series connection relationship of the battery modules, in one of a plurality of serial unit sets, based on the comparison.

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Yongin-si, South Korea

Youngdong Seo