Abstract:
A cover assembly and a battery comprising the same are provided. The cover assembly comprises: a cover plate body (1) formed with at least a via hole (11) penetrating therethrough; a cover plate connecting member (2) hermetically connected with the cover plate body (1) at the via hole (11), which is formed with an electrode receiving hole (21) therein; and an electrode terminal (3) penetrating through the electrode receiving hole (21) to be hermetically connected with and insulated from the cover plate connecting member (2) for leading out a current.
Abstract:
A power system for an electric vehicle, an electric vehicle and a motor controller for an electric vehicle are provided. The power system includes: a power battery (10); a charge-discharge socket (20); a three-level bidirectional DC-AC module (30); a motor control switch (40); a charge-discharge control module (50) having a first terminal connected with an AC terminal of the three-level bidirectional DC-AC module (30) and a second terminal connected with the charge-discharge socket (20); and a control module (60) connected with a third terminal of the charge-discharge control module (50) and a third terminal of the motor control switch (40), and configured to control the charge-discharge control module (50) and the motor control switch (40) according to a current working mode of the power system.
Abstract:
A NFC antenna assembly and a mobile communication device are provided. The NFC antenna assembly includes: a shell (100), a connecting device and an antenna circuit (200), the connecting device includes a female connector(400)and a male connector (300) configured to connect with the female connector (400) via a snap-fit connection,the antenna circuit (200) formed on the shell (100) and the male connector and defining first and second ends which are adapted to electrically connect with the female connector (400) via the male connector (300).
Abstract:
A doped tin oxide contains a tin oxide and an oxide of a doping element. The doping element includes at least one of vanadium and molybdenum. Based on the total amount of the doped tin oxide,the tin oxide is about90-99mol%,and the oxide of the doping element is about1-10mol%. A polymer article containing the doped tin oxide,an ink composition containing the doped tin oxide,and method for preparing them are also provided.In addition,a method for selective metallization of the polymer article and a method for selective metallization of an insulating substrate are provided.
Abstract:
A method for forming a pattern on a surface of an insulating substrate and a ceramic article comprises: forming a film that comprises any one of ZnO, SnO 2 , TiO 2 and a combination thereof on at least one surface of the insulating substrate; irradiating at least a part of the film by an energy beam to form the pattern in the film.
Abstract:
A method and a device for obtaining a high dynamic range image are provided. The method includes: obtaining a pixel value of each pixel in two images of a same scene; determining a brightness value of each pixel in the two images; determining an objective brightness value of each pixel in a combined image combining the two images; determining a color value of each pixel in the two images; determining a color value of each pixel in the combined image; correcting the color value of each pixel in the combined image so as to obtain a corrected color value of each pixel in the combined image; determining a pixel value of each pixel in the combined image; and obtaining a high dynamic range image.
Abstract:
An energy-saving method and system (402) are provided. The energy-saving method includes: detecting a working condition of a motor (301) in the vehicle (401); detecting a fuel injection quantity of the motor (301), a generating current of a generator (302) in the vehicle (401) and an electric quantity of a battery (305) in the vehicle (401) when the motor (301) is working; determining whether the generating current of the generator (302) is less than a first current threshold when the fuel injection quantity is zero; determining whether the electric quantity is less than a first electric quantity threshold when the generating current is less than the first current threshold; controlling the generator (302) to charge the battery (305) when the electric quantity of the battery (305) is less than the first electric quantity threshold; and controlling the generator (302) to reduce the generating current when the electric quantity of the battery (305) is greater than or equal to the first electric quantity threshold.
Abstract:
A power supply system for an electric vehicle includes a battery module (10), a first DC/DC converter (20), a second DC/DC converter (30), a first switch (K1), a second switch (K2) and a third switch (K3). The battery module (10) has a negative electrode (a), a first positive electrode (b) and a second positive electrode (c). The first DC/DC converter (20) has an input terminal (21) connected with the second positive electrode (c). The second DC/DC converter (30) has an input terminal (31) connected with the second positive electrode (c). The first switch (K1) is connected between the second positive electrode (c) and the first DC/DC converter (20). The second switch (K2) is connected between the second positive electrode (c) and the second DC/DC converter (30). The third switch (K3) is connected between the first positive electrode (b) and an output terminal (31) of the second DC/DC converter (30).
Abstract:
A switching power source, a method and a control chip for controlling the same are provided. The switching power source includes: a filtering and rectifying module, connected with an AC power source and configured to filter and rectify an alternating current output from the AC power source to obtain a direct current; a control module, connected with the filtering and rectifying module and configured to obtain an amplitude of the alternating current from the direct current, to adjust a frequency of a control signal according to the amplitude, in which the control module decreases the frequency of the control signal continuously or intermittently when the amplitude increases, and to output the control signal; and a primary constant current circuit, connected with the control module and the filtering and rectifying module respectively, and configured to receive the control signal and to output a constant current according to the control signal.
Abstract:
An LED street lamp includes: a bracket (1); a light-emitting assembly (2) provided on the bracket (1); an upper case (3) provided at a rear end of the bracket (1), defining a receiving cavity (30) with an open bottom, and provided with a first connecting part (31) and a connecting portion (320) which is adapted to connect with the support member (200); a lower case (4) provided with a second connecting part (40) which is fitted with the first connecting part (31) to detachably and pivotally connect the lower case (4) with the upper case (3) so as to open or close the open bottom of the receiving cavity (30): and a power drive assembly (5) provided on the lower case (4), contained in the receiving cavity (30); and the light-emitting assembly (2) is detachably with the power drive assembly (5).