Chinese Academy of Sciences

Beijing Electric Vehicle Co., Ltd.

Zhiqiang Guo

Huigen Yu

Nanjian Wu

Rui Liang

Zhongke Yang

Liyuan Liu

Liguo Yan

Xingquan Qin

Dangqing Li

Qianhui Zhang

Donglin Cao

Disclosed are a device and a method for testing a battery equalization circuit. The device includes: multiple voltage supply modules, each of which being connected to a corresponding equalization module to form multiple test loops, and being configured to supply simulated voltage of the battery cell to a corresponding equalization module; multiple equalization current detection modules, each of which being configured to detect equalization current of each test loop; multiple switch assemblies and multiple leakage current detection modules, each switch assembly being connected in parallel with a corresponding leakage current detection module, and each leakage current detection module being configured to detect leakage current generated by a corresponding equalization module when the leakage current detection module is connected into a corresponding test loop; and a control module, configured to control each switch assembly and each equalization module to detect the equalization current and the leakage current of each test loop.

Method and device for testing battery equalization circuit

The present disclosure provides an analog readout preprocessing circuit for a CMOS image sensor and a control method thereof. The analog readout preprocessing circuit comprises an extended count-type integration cycle-successive approximation hybrid analog-to-digital conversion capacitor networkconfigured to achieve readout and analog-to-digital conversion of signals output from the CMOS image sensor; an operational amplifier configured to utilize 'virtual short' of two input terminals of the operational amplifier and the charge conservation principle, to achieve a function of extended count-type integration cycle-successive approximation hybrid analog-to-digital conversion, where the extended count-type integration can effectively reduce a thermal noise and a flicker noise within the image sensor; a comparator configured to compare voltages at two terminals to achieve a function of quantization of signals; and a control signal generator configured to provide control signals.

Analog readout preprocessing circuit for CMOS image sensor and control method thereof

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Beijing, China

Zhiqiang Guo