Abstract: Provided are an injection device, an injection device without changing an original structure of a syringe, and a method for using the same. The injection device includes a barrel (1) with a flange (8) and a push rod (2) slidably connected in the barrel (1). One end of the push rod (2) is provided with a piston (3), and the other end is provided with a thumb rest (4). The push rod (2) or the barrel (1) is detachably connected with a stopping member (5), and the stopping member (5) is provided with a first stopping portion (51) and a second stopping portion (52) at different positions. A distance between the first stopping portion (51) and the second stopping portion (52) is a fixed distance.

Abstract: A data processing method includes, in response to an interaction message being displayed on an interaction interface, displaying a virtual object in an interaction area in which the interaction message is located, and displaying a resource object at a target location on the interaction interface. The virtual object and the resource object are associated with the interaction message, and the resource object and the virtual object are configured to interact with each other. The method further includes displaying, on the interaction interface, interactive movement involving the virtual object and the resource object. The interactive movement includes moving the virtual object from a location of the interaction area, and/or moving the resource object from the target location.

Abstract: A method of controlling power supply of a caravan including a photovoltaic plate includes: receiving a first power parameter of an input interface element; determining whether there is a mains supply to be input into the input interface element according to the first power parameter; turning on a first switch to make the input interface element be electrically connected to the output interface element if the mains supply is input into the input interface element; receiving a power parameter of a battery pack if the mains supply is not input into the input interface element; determining whether a remaining power of the battery pack exceeds a power threshold according to the power parameter of the battery pack; and making the battery pack be electrically connected to an output interface element if the remaining power of the battery pack exceeds the power threshold.

Abstract: A method of controlling power supply of a caravan including a photovoltaic plate includes: receiving a first power parameter of an input interface element; determining whether there is a mains supply to be input into the input interface element according to the first power parameter; turning on a first switch to make the input interface element be electrically connected to the output interface element if the mains supply is input into the input interface element; receiving a power parameter of a battery pack if the mains supply is not input into the input interface element; determining whether a remaining power of the battery pack exceeds a power threshold according to the power parameter of the battery pack; and making the battery pack be electrically connected to an output interface element if the remaining power of the battery pack exceeds the power threshold.

Abstract: A system and method for self-isolating an abnormal battery. The system includes: a switch controlling module, a battery detecting module, a data analyzing module and at least two switch battery modules, the switch battery modules includes at least one isolating switch, at least one main circuit switch and a battery, the main circuit switch is connected with the battery in series, a series circuit composed of the main circuit switch and the battery is connected in parallel to the isolating switch so as to form a switch battery module, the switch battery modules are connected with each other in series; the battery detecting module is connected with the battery and the data analyzing module; the switch controlling module is connected with the main circuit switch, the isolating switch and the data analyzing module. The problem that failure of a single battery may cause the whole system cannot work, is solved.

Abstract: A system and method for self-isolating an abnormal battery. The system includes: a switch controlling module, a battery detecting module, a data analyzing module and at least two switch battery modules, the switch battery modules includes at least one isolating switch, at least one main circuit switch and a battery, the main circuit switch is connected with the battery in series, a series circuit composed of the main circuit switch and the battery is connected in parallel to the isolating switch so as to form a switch battery module, the switch battery modules are connected with each other in series; the battery detecting module is connected with the battery and the data analyzing module; the switch controlling module is connected with the main circuit switch, the isolating switch and the data analyzing module. The problem that failure of a single battery may cause the whole system cannot work, is solved.