Abstract: A stacked cell and preparation method thereof. The stacked cell includes: a crystalline silicon cell; a conductive connecting layer located on a surface of the crystalline silicon cell; a first isolation layer extending from a surface of the conductive connecting layer facing away from the crystalline silicon cell to penetrate through the conductive connecting layer, and a perovskite cell located on the surface of the conductive connecting layer facing away from the crystalline silicon cell.

Abstract: The present application provides a laminated solar cell and an application thereof. The solar cell comprises a p-type silicon layer (1), connecting layers, a perovskite layer (2), and electrode layers; the connecting layers comprise a first connecting layer (3), a second connecting layer (4), and a third connecting layer (5); the electrode layers comprise a first electrode layer (6) and a second electrode layer (7); and in the direction moving away from the p-type silicon layer (1), the first connecting layer (3), the perovskite layer (2), the second connecting layer (4), and the first electrode layer (6) which are connected in sequence are provided on the front surface of the p-type silicon layer (1), and the third connecting layer (5) and the second electrode layer (7) which are connected in sequence are provided on the back surface of the p-type silicon layer (1).

Abstract: A stacked cell and preparation method thereof. The stacked cell includes: a crystalline silicon cell; a conductive connecting layer located on a surface of the crystalline silicon cell; a first isolation layer extending from a surface of the conductive connecting layer facing away from the crystalline silicon cell to penetrate through the conductive connecting layer, and a perovskite cell located on the surface of the conductive connecting layer facing away from the crystalline silicon cell.

Abstract: The present application provides a large-area perovskite layer and a preparation method thereof. The preparation method includes: dissolving raw materials of a perovskite in an ionic liquid or in a mixture of the ionic liquid and an organic solvent, thereby forming a perovskite precursor, and coating the perovskite precursor onto a surface of a crystalline silicon bottom cell, thereby forming the perovskite layer.

Abstract: The present disclosure provides a passivation contact structure for a solar cell and a manufacturing method therefor and a solar cell using the passivation contact structure. The passivation contact structure comprises a tunnel layer; a transparent conductive film, located on the tunnel layer and in contact with the tunnel layer; a cover layer, located on the transparent conductive film; and a metal electrode, passing through the cover layer to be in contact with the transparent conductive film, the end surface of metal electrode being located in the transparent conductive film. According to the passivation contact structure for the solar cell, the manufacturing method therefor, and the solar cell using the passivation structure of the present disclosure, both electricity conducting and passivation effects can be achieved, and the effect of reducing the loss of light absorption can also be achieved.

Abstract: The present application provides an emitter, a selective emitter cell preparation method and a selective emitter cell. The preparation method for the selective emitter cell comprises: sequentially irradiating a boron-rich layer using lasers of at least two different wavelengths, and sequentially doping boron atoms in the boron-rich layer to the same region of a silicon wafer by means of a laser, to obtain the emitter.

Abstract: An apparatus and method of protect secret input data, secret processing, and secret output data by receiving a signed private enclave from a secret processing owner; receiving a signed manager enclave from a trusted third party (TTP); deploying the signed manager enclave; receiving a protected code loader (PCL) key encrypted with an encryption public key of the signed manager enclave from the secret processing owner; deploying the signed private enclave; running secret processing in the signed private enclave with secret input data to generate secret output data; and encrypting the secret output data in the signed private enclave using an ephemeral key, encrypting the ephemeral key in the signed private enclave using an encryption public key of the signed manager enclave, and sending the encrypted secret output data and the encrypted ephemeral key to the signed manager enclave.

Abstract: A two-wheel balancing vehicle includes a chassis including one or more mounting interfaces configured to detachably mount one or more fighting modules for robotic competition. The two-wheel balancing vehicle also includes two wheel assemblies respectively mounted at a left side and a right side of the chassis. Each of the two wheel assemblies includes a wheel and a driving motor drivingly connected with the wheel and mounted to the chassis. The two-wheel balancing vehicle also includes an inertial measurement unit. The two-wheel balancing vehicle further includes a control system communicatively connected with the inertial measurement unit and the driving motor, the control system configured to receive sensing signals provided by the inertial measurement unit and to control a balancing state of the two-wheel balancing vehicle. The inertial measurement unit and the control system are mounted to the chassis.

Abstract: A position adjusting device includes a first support member, a mounting seat disposed on the first support member and including a receiving seat and a pivot shaft disposed in the receiving seat, and a second support member carried by the receiving seat.

Abstract: A position adjusting device includes a first support member, a mounting seat disposed on the first support member and including a receiving seat and a pivot shaft disposed in the receiving seat, and a second support member carried by the receiving seat.

Abstract: An armor plate includes am armor shell and a plate body mounted to the armor shell. The plate body includes a display screen and a resistive screen configured to detect a position of a shot point. The display screen is disposed between the resistive screen and the armor shell and is configured to display the shot point corresponding to the position.

Abstract: A two-wheel balancing vehicle includes a chassis including one or more mounting interfaces configured to detachably mount one or more fighting modules for robotic competition. The two-wheel balancing vehicle also includes two wheel assemblies respectively mounted at a left side and a right side of the chassis. Each of the two wheel assemblies includes a wheel and a driving motor drivingly connected with the wheel and mounted to the chassis. The two-wheel balancing vehicle also includes an inertial measurement unit. The two-wheel balancing vehicle further includes a control system communicatively connected with the inertial measurement unit and the driving motor, the control system configured to receive sensing signals provided by the inertial measurement unit and to control a balancing state of the two-wheel balancing vehicle. The inertial measurement unit and the control system are mounted to the chassis.

Abstract: A Mecanum wheel includes a first wheel rim and a second wheel rim disposed opposing the first wheel rim. The Mecanum wheel also includes a first hub coupled to the first wheel rim and a second hub coupled to the second wheel rim. The Mecanum wheel further includes a plurality of rollers disposed between the first wheel rim and the second wheel rim. The second hub is depressed in a direction facing the first hub to form a receiving space configured to receive a motor. The first hub and the second hub are both located on a same side of a middle plane having an equal distance to the first wheel rim and the second wheel rim.

Abstract: A four-wheel chassis comprising a body, and a front wheel assembly and a rear wheel assembly detachably coupled to the body. After detached from the body, one of the front wheel assembly and the rear wheel assembly independently moves as a two-wheel chassis. The one of the front wheel assembly and the rear wheel assembly is connected to a wheel driving controller that controls wheels of the two-wheel chassis.

Abstract: A firing device includes a magazine configured to receive a plurality of toy bullets and a turret connected with the magazine. A bottom plate of the magazine is provided with a bullet output port. The turret includes a conduit, a barrel aligned with the conduit, and a propelling device disposed between the conduit and the barrel. The conduit is disposed below the magazine and is provided with a guide slot including a bullet inlet substantially aligned with the bullet output port of the magazine.

Abstract: A firing device includes a magazine configured to receive a plurality of toy bullets and a turret connected with the magazine. A bottom plate of the magazine is provided with a bullet output port. The turret includes a conduit, a barrel aligned with the conduit, and a propelling device disposed between the conduit and the barrel. The conduit is disposed below the magazine and is provided with a guide slot including a bullet inlet substantially aligned with the bullet output port of the magazine.

Abstract: A position adjusting device includes a first support member, a yaw axis motor disposed on the first support member, a second support member rotatably disposed on the first support member through the yaw axis motor, and a pitch axis motor disposed on the second support member and used for driving the load to rotate. The yaw axis motor is used for driving the second support member to rotate about a yaw axis to cause the load to rotate about the yaw axis. The pitch axis motor is used for driving the load to rotate about a pitch axis.

Abstract: A position adjusting device includes a first support member, a yaw axis motor disposed on the first support member, a second support member rotatable; disposed on the first support member through the yaw axis motor, and a pitch axis motor disposed on the second support member and used for driving the load to rotate. The yaw axis motor is used for driving the second support member to rotate about a yaw axis to cause the load to rotate about the yaw axis. The pitch axis motor is used for driving the load to rotate about a pitch axis.