Abstract: A battery management system includes a battery cell module, a switching circuit, an analog front-end circuit, an electrically erasable read-only memory which is reproducible, and a micro-controller. The switching circuit is connected in parallel with the battery cell module. The switching circuit includes a charging field-effect transistor and a discharging field-effect transistor. The analog front-end circuit is configured to monitor battery information of the battery cell module. The battery information includes a voltage of the battery cell module, a current of the battery cell module and a temperature of the battery cell module. The analog front-end circuit is connected with the switching circuit. The micro-controller stores a starting program.

Abstract: A method of verifying a focusing operation of a panoramic lens performs a focusing test on the panoramic lens including aligning a focus adjusting ring and a calliper on a panoramic lens focusing workstation. If the focus adjusting ring and the calliper are aligned, a focal length adjusting test is executed for the panoramic lens. A focalizer is controlled to execute the focal length adjusting test. The focusing test of the panoramic lens is performed before and after the panoramic lens is affixed to a printed circuit board assembly of a lens holder.

Abstract: An electronic device includes a rack, at least one cage, at least one handle assembly and at least one host. The at least one cage is disposed in the rack. The at least one handle assembly includes a fixing member, a movable handle, a handheld member and a latch member. The fixing member is disposed on a side of the at least one cage. An end of the movable handle is movably disposed on the fixing member. The handheld member is rotatably disposed on another end of the movable handle. The latch member is disposed on the handheld member. The latch member is engaged with another side of the at least one cage or is disengaged from another side of the at least one cage via the rotation of the handheld member. The at least one host is removably disposed in the at least one cage.

Abstract: An electronic device includes a rack, at least one cage, at least one handle assembly and at least one host. The cage is disposed in the rack. The handle assembly includes a fixing member, a restoring member and a movable handle. The fixing member is disposed on a side of the at least one cage. An end of the restoring member is disposed on the fixing member. An end of the movable handle is rotatably disposed on the fixing member. Another end of the movable handle is detachably disposed on another side of the cage to press another end of the restoring member. The host is removably disposed in the cage. The restoring member restores via the movable handle released from the cage to force the movable handle to be rotated along a direction away from the cage.

Abstract: An electronic device includes a rack, at least one cage, at least one handle assembly and at least one host. The cage is disposed in the rack. The handle assembly includes a fixing member, a restoring member and a movable handle. The fixing member is disposed on a side of the at least one cage. An end of the restoring member is disposed on the fixing member. An end of the movable handle is rotatably disposed on the fixing member. Another end of the movable handle is detachably disposed on another side of the cage to press another end of the restoring member. The host is removably disposed in the cage. The restoring member restores via the movable handle released from the cage to force the movable handle to be rotated along a direction away from the cage.

Abstract: A verification method for a panoramic lens focusing workstation is able to proceed with a focusing operation of a panoramic lens. Make a calliper engaged with a focus adjusting ring. Execute the next step if the focus adjusting ring is unable to be engaged with the calliper, and execute a step of controlling a focalizer to proceed with a focal length adjusting test if the focus adjusting ring is able to be engaged with the calliper. Generate test results including a test failure result. Control the focalizer to proceed with the focal length adjusting test. Execute the step of generating the test results including the test failure result if the panoramic lens is without passing through the focal length adjusting test, and execute the next step if the panoramic lens passes through the focal length adjusting test. Generate the test results including a test passing result.

Abstract: A calibration method for a lens testing station is described. Install a calibrating lens on a lens holder. The calibrating lens is aligned with a testing pattern. Capture the testing pattern. An image capture unit captures a calibration image. Calculate a central coordinate of the calibration image, and calculate an offset of the central coordinate relative to an original center coordinate. Check whether shot times of the calibration image are less than preset capturing times. Execute the third step when the shot times of the calibration image are less than the preset capturing times, execute the next step when the shot times of the calibration image are equal to the preset capturing times. Calculate an average offset of all stored offsets by a control unit. Add the average offset to the original center coordinate to obtain a corrected original center coordinate.

Abstract: A battery management system includes a battery cell module, a switching circuit, an analog front-end circuit, an electrically erasable read-only memory which is reproducible, and a micro-controller. The switching circuit is connected in parallel with the battery cell module. The switching circuit includes a charging field-effect transistor and a discharging field-effect transistor. The analog front-end circuit is configured to monitor battery information of the battery cell module. The battery information includes a voltage of the battery cell module, a current of the battery cell module and a temperature of the battery cell module. The analog front-end circuit is connected with the switching circuit. The micro-controller stores a starting program.

Abstract: An under-voltage protection method is applied in a battery management system. The battery management system includes a control module, an analog front-end unit, a monitoring unit, and a charging and discharging unit. The control module has a system communication function. The control module includes a micro-controller, and an electrically erasable programmable read-only memory connected with the micro-controller. The analog front-end unit is connected to the micro-controller. The monitoring unit is connected to the analog front-end unit. The charging and discharging unit includes a charging switch which is a charging field effect transistor, and a discharging switch which is a discharging field effect transistor. The monitoring unit, and the charging and discharging unit are connected with the analog front-end unit.

Abstract: A terminal functional side chain-substituted diketopyrrolopyrrole (DPP)-based terpolymer and a preparation method and use thereof is described herein. The terpolymer has the following structural formula: where R1 is a terminal siloxy-substituted swallow-tailed chain with 22 to 52 carbon atoms in total, and t1 and t2 each are an integer of 1 to 18; R2 is a semifluoroalkyl-substituted swallow-tailed chain with 12 to 60 carbon atoms in total and 10 to 46 fluorine atoms in total, t3 and t4 each are an integer of 1 to 16, and t5 and t6 each are an integer of 1 to 10; and Ar is any one selected from the group consisting of aryl, heteroaryl, substituent-containing aryl, and substituent-containing heteroaryl, and m and n each are an integer of 5 to 100.