公开(公告)号：WO2011050670A1

公开(公告)日：2011-05-05

申请号：PCT/CN2010/077603

申请日：2010-10-08

Applicant: BYD COMPANY LIMITED ,  SHEN, Xiaofeng ,  PENG, Junna

Inventor： SHEN, Xiaofeng ,  PENG, Junna

IPC: G01R31/36 ,  G01R27/14

CPC classification number: G01R31/3662 ,  G01R19/16542 ,  H01M2/1055 ,  H01M10/48 ,  H02J7/0031 ,  H02J7/0045

Abstract: A device and method for testing the internal resistance of a battery pack is provided. The testing device comprises a battery pack; an adjustable resistance connected with the battery pack to form a loop circuit; an excitation source coupled to the loop circuit to apply excitations thereto; a sampling unit used to collect a first excitation voltage between the two terminals of the battery pack, a second excitation voltage between the two terminals of the adjustable resistance and the resistance value of the adjustable resistance; a control unit coupled to the sampling unit and used to calculate the internal resistance of the battery pack based on the first excitation voltage, the second excitation voltage and the resistance value collected at a time when the first excitation voltage is substantially equal to the range voltage of the sampling unit. The testing device has high measurement accuracy and may calculate the internal resistance in a wide voltage range.

Abstract translation: 提供一种用于测试电池组的内阻的装置和方法。 测试装置包括电池组; 与电池组连接的可调电阻以形成回路电路; 耦合到所述环路电路以对其施加激励的激励源; 采样单元，用于收集电池组的两个端子之间的第一激励电压，可调电阻的两个端子之间的第二激励电压和可调电阻的电阻值; 控制单元，其耦合到采样单元，用于基于第一激励电压，第二激励电压和在第一激励电压基本上等于范围电压时收集的电阻值来计算电池组的内部电阻 的采样单元。 测试装置测量精度高，可以在宽电压范围内计算内部电阻。

公开(公告)号：EP2494372A1

公开(公告)日：2012-09-05

申请号：EP10826033.2

申请日：2010-10-08

Applicant: BYD Company Limited

Inventor： SHEN, Xiaofeng ,  PENG, Junna

IPC: G01R31/36 ,  G01R27/14

CPC classification number: G01R31/3662 ,  G01R19/16542 ,  H01M2/1055 ,  H01M10/48 ,  H02J7/0031 ,  H02J7/0045

Abstract: A device and method for testing the internal resistance of a battery pack is provided. The testing device comprises a battery pack; an adjustable resistance connected with the battery pack to form a loop circuit; an excitation source coupled to the loop circuit to apply excitations thereto; a sampling unit used to collect a first excitation voltage between the two terminals of the battery pack, a second excitation voltage between the two terminals of the adjustable resistance and the resistance value of the adjustable resistance; a control unit coupled to the sampling unit and used to calculate the internal resistance of the battery pack based on the first excitation voltage, the second excitation voltage and the resistance value collected at a time when the first excitation voltage is substantially equal to the range voltage of the sampling unit. The testing device has high measurement accuracy and may calculate the internal resistance in a wide voltage range.

公开(公告)号：EP3872610A1

公开(公告)日：2021-09-01

申请号：EP19881321.4

申请日：2019-11-06

Applicant: BYD Company Limited

Inventor： PENG, Junna ,  LANG, Wenlong

IPC: G06F3/0487

Abstract: The present disclosure provides an on-board unit (OBU) screen rotation display method and apparatus, where the method includes: obtaining first acceleration data of an OBU screen in a current cycle, and determining a screen display direction matching the first acceleration data as a first screen display direction; obtaining second acceleration data of the OBU screen in a next cycle, determining a screen display direction matching the second acceleration data, and determining that the next cycle is a screen rotation effective cycle if the screen display direction matching the second acceleration data is a second screen display direction; and if a quantity of consecutive screen rotation effective cycles exceeds a preset quantity, controlling the OBU screen to rotate from the first screen display direction to the second screen display direction. Therefore, the OBU screen is prevented from rotating by mistake, thus improving the stickiness between a user and a product.

公开(公告)号：EP2494372B1

公开(公告)日：2013-12-04

申请号：EP10826033.2

申请日：2010-10-08

Applicant: BYD Company Limited

Inventor： SHEN, Xiaofeng ,  PENG, Junna

IPC: G01R31/36 ,  G01R27/14

CPC classification number: G01R31/3662 ,  G01R19/16542 ,  H01M2/1055 ,  H01M10/48 ,  H02J7/0031 ,  H02J7/0045

Abstract: An internal resistance testing device includes an excitation source and a battery pack, an adjustable resistance R, a sampling unit, and a control unit. The excitation source and the battery pack form a loop circuit. The adjustable resistance R may be located at the loop circuit formed by the excitation source and the battery pack. The sampling unit samples the voltage between two sides of the battery pack, the voltage between two sides of the adjustable resistance R, and the value of the adjustable resistance R. The control unit calculates internal resistance of the battery pack according to the signal value collected by the sampling unit. The internal resistances of different voltage-ranges the battery pack are determined by adjusting the value of the adjustable resistance R to cause the actual excitation voltage to be equal to the range voltage of the sampling unit. The voltage between two sides of the adjustable resistance R is made equal to the range voltage of the sampling unit by adjusting the value of the adjustable resistance R, which effectively improves measurement accuracy of the internal resistance.

Abstract translation: 内阻测试装置包括激励源和电池组，可调电阻R，采样单元和控制单元。 激励源和电池组形成一个环路。 可调电阻R可以位于由激励源和电池组形成的环路处。 采样单元对电池组两侧电压，可调电阻R两端电压以及可调电阻R的值进行采样。控制单元根据采集到的信号值计算电池组的内阻 由抽样单位。 通过调节可调电阻R的值来确定电池组的不同电压范围的内部电阻，以使实际激励电压等于采样单元的范围电压。 通过调整可调电阻R的值，使得可调电阻R两侧电压与采样单元的电压范围相等，有效提高了内阻的测量精度。