Abstract: A charging device comprises a charging pile and a charging pile gun head connected via a transmission cable, wherein the charging pile gun head is provided with a pressing detection module, and the charging pile is provided with a control module connected to the charging pile gun head, and a wireless communication module and an output adjustment module connected to the control module. In operation, the charging device receives a pressing operation of a user, correspondingly outputs a charging instruction to the electric automobile to control the opening and closing of a charging base cover door, and adjusts the charging state when the charging pile gun head is connected to the charging base of the electric automobile. The process does not require the user to manually open or close the charging base cover door, and the user can adjust the output of the charging pile via the charging pile gun head.

Abstract: Provided by the present disclosure are a display panel and a display apparatus. The display panel has a display area, the display area has an irregular boundary and includes a main display area and a transition display area between the main display area and the irregular boundary; the display area includes a plurality of sub-pixels arranged in an array along a row direction and a column direction, each sub-pixel in the transition display area has a light-shielding block, and an area of the light-shielding block is smaller than an area of the sub-pixel; the transition display area is divided into a first area, a second area and a third area successively disposed in sequence along an extension direction of the irregular boundary; in the first area and the third area, each sub-pixel includes one light-shielding block, and the light-shielding block in each sub-pixel is provided close to the irregular boundary.

Abstract: The present disclosure provides a circuit and apparatus for generating a signal source for impedance measurement of rock and ore samples, including a smart mobile device; an integrated instrument, where the integrated instrument is connected to the smart mobile device via a wireless network, and a first electrode interface, a second electrode interface, a third electrode interface and a fourth electrode interface are fixedly arranged on the integrated instrument; and a sample rack, where the sample rack includes a first unpolarized electrode, a second unpolarized electrode, a third unpolarized electrode, and a fourth unpolarized electrode, rock and ore samples are placed between the second unpolarized electrode and the third unpolarized electrode, and a first end of the first unpolarized electrode is electrically connected to the first electrode interface by a triaxial cable.

Abstract: The present application provides a positive current collector plate. The positive current collector plate is located between positive tabs and a positive cover plate; the positive current collector plate includes a plate body and an electrical connection part; the electrical connection part extends and protrudes from the plate body toward the positive cover plate and protrudes; the plate body is in contact with the positive tabs; the electrical connection part is in contact with the positive cover plate. The present application also provides a cylindrical battery.

Abstract: Provided is a tab plate, including a coating area and an empty foil area located on one side of the coating area. A boundary line is formed at the connection position between the empty foil area and the coating area, the empty foil area is cut to form a plurality of tabs of quadrangular structures, and the four sides of each tab include a first side, a second side and a third side; the third side is located in the empty foil area and is close to the boundary line; and the first side is arranged opposite to the second side, both the first side and the second side intersect with the third side, and an included angle a is formed between the first side and the third side, with the included angle a being an acute angle. Further provided in the present application is a wound battery.

Abstract: A central tube assembly for a battery, a battery, and a manufacturing method of a central tube assembly for a battery is provided. The central tube assembly for a battery comprises: a central tube and at least one battery center pin; the battery center pins are provided on the outer periphery of the central tube, each battery center pin is sleeved on the central tube to form the central tube assembly, and the battery center pins are electrically insulated from the central tube. The central tube assembly for a battery of the present disclosure overcomes the situation in the related art that the central tube is separated from the battery center pins, reduces a welding process during battery manufacturing, and greatly enhances the sealing performance of the battery.

Abstract: Provided is a battery housing. The battery housing has an opening at both ends in a length direction, respectively, and the battery housing is provided with at least one cooling unit extending along the length direction. The cooling unit is provided with a coolant channel for coolant circulation, and the at least one cooling unit divides the internal space of the battery housing into at least two accommodating cavities spaced apart from top to bottom in a height direction. Each accommodating cavity is used for accommodating a battery cell. By providing the cooling unit in the battery housing, the heat generated by the battery cell can be dispelled immediately, thereby quickly and effectively solving the heat dissipation problem of the battery cell during charging and discharging. Also provided are a lithium-ion secondary battery and an electric vehicle.

Abstract: Provided is a lithium-ion secondary battery, comprising a housing and at least two cells packaged in the housing. The housing is provided with at least one cooling unit extending along a length direction of the housing. The cooling unit is provided with a coolant channel for coolant circulation, the cooling unit divides the internal space of the housing into at least two accommodating cavities spaced apart in a thickness direction of the housing. A battery cell is arranged in each accommodating cavity, and the cooling units are in thermal conduction contact with the cells in adjacent accommodating cavities. By providing the cooling unit in the housing, the heat generated by the battery cell can be conducted in time, thereby quickly and effectively solving the heat dissipation problem of the battery cell during charging and discharging. Also provided is an electric vehicle.

Abstract: A battery cover plate and a lithium-ion secondary battery. An electrode terminal is provided on the battery cover plate, an explosion-proof groove is also provided on the battery cover plate, and the explosion-proof groove surrounds or is set partially around the electrode terminal. The battery cover plate can burst or explode along the explosion-proof groove in the case of battery abnormality, and the battery cover plate can drive the electrode terminal to move together when the battery cover plate bursts or explodes, and the movement of the electrode terminal pulls a tab, so that the tab or the junction of the tab can be partially broken or completely broken, thereby weakening or cutting off the electric connection between the electrode terminal and a battery cell.

Abstract: Provided is a battery assembly, which includes a cover plate and a pole. The pole penetrates the cover plate and is fixed with the cover plate by riveting. For the battery assembly provided by the application, the pole and the cover plate are fixed by riveting. Compared with the fixing method of welding, it not only simplifies the fixing operation, improves the production efficiency, but also reduces the production cost. Also provided are a preparation method of a battery assembly, a battery and an electric vehicle.

Abstract: A method for acquiring and setting a charging cut-off capacity, and a charging management system are disclosed. In the system, a cloud server is communicatively connected to a charging apparatus which is communicatively connected to a new energy vehicle. The cloud server can acquire e battery history data of the new energy vehicle according to a charging request of the charging apparatus for a power battery of the new energy vehicle, so as to calculate the charging cut-off capacity of the charging apparatus for the power battery, and send the charging cut-off capacity to the charging apparatus. The charging apparatus can perform charging and battery-capacity monitoring on the power battery according to the charging cut-off capacity. The method provided by the present invention realizes intelligent calculation and setting of the charging cut-off capacity, which can effectively improve the power consumption and charging safety of the new energy vehicle.

Abstract: A method, a device and a system for vehicle power battery auxiliary equilibrium is provided. The method includes: determining a degree value of a power battery inconsistency problem by a cloud platform according to data of the power battery; and according to the degree value of the power battery inconsistency problem, triggering by the cloud platform an auxiliary equilibrium charging strategy to be issued to a charging device, so that the charging device charges the power battery according to the issued auxiliary equilibrium charging strategy. According to the embodiments of the present application, it is possible to assist the equilibrium function of a vehicle-side battery management system, repair the power battery inconsistency problem, increase the full-power mileage of the electric vehicles, extend the service life of the power battery, and reduce the cost of using the vehicle. It does not affect the user’s daily vehicle use experience.

Abstract: A millimeter-wave radar housing material capable of being laser welded, and a preparation method therefor, which belong to the technical field of millimeter-wave radar housing manufacturing. The millimeter-wave radar housing material specifically comprises the following components in parts by weight: 50-90 parts of polypropylene, 10-50 parts of glass fiber, 0.2-0.8 part of a nucleating agent, 0.5-1 part of a compatibilizer, 0.1-0.5 part of a black colorant, 0.1-0.5 part of an antioxidant, and 0.1-0.8 part of a light stabilizer. The radar housing material disclosed by the present invention has the advantages of low dielectricity, being lightweight, high strength and high heat resistance, can transmit a near-infrared light beam, and has laser weldability.

Abstract: A winding type battery cell includes a roll core and at least one electrode sheet unit. The roll core includes a positive connection part, a negative connection part and an insulation part located between the positive connection part and the negative connection part. The positive connection part and the negative connection part are respectively connected with two ends of the insulation part. The electrode sheet unit includes a positive electrode sheet, a negative electrode sheet and a separator. The positive electrode sheet and the negative electrode sheet are separated by the separator. The positive electrode sheet is connected with the positive connection part, and the negative electrode sheet is connected with the negative connection part. The winding type battery cell is formed by winding the electrode sheet unit around the roll core. A winding battery with the winding type battery cell is also provided.