Abstract: A battery module and a short protection method thereof are provided. The battery module has a battery cell pack and a control circuit. The method includes: detecting a temperature of the battery cell pack as a battery cell temperature through the control circuit; determining whether the battery cell temperature shows a downward trend when the battery cell temperature is higher than a first predetermined temperature value; and deactivating the battery module when the battery cell temperature does not show the downward trend.

Abstract: Devices, systems, and methods are provided for gesture-based selections of devices. A method may include receiving, by at least one processor of a first device, an input associated with causing a second device to perform an action. The method may include identifying motion data associated with the first device. The method may include determining, based on the motion data, a gesture associated with the first device. The method may include receiving an indicator from the second device and determining, based on the indicator, that the gesture is associated with selecting the second device to perform the action. The method may include sending a command to the second device, the command associated with causing the second device to perform the action.

Abstract: Systems, methods, and computer-readable media are disclosed for systems and methods for reducing battery consumption for portable devices with microphones. Example methods may include receiving, by a user device, a first indication from a first device indicating that voice data is forthcoming, where the first device comprises a first battery and a first microphone. Example methods may include determining that a first battery level of the first battery is less than a threshold, and determining that a second device is in an active state, where the second device comprises a second battery and a second microphone. Methods may include sending the second device a second indication to activate the second microphone, receiving the voice data from the second device, and causing presentation of a digital response to a request associated with the voice data at the first device.

Abstract: Systems, methods, and computer-readable media are provided for dividing and merging online content sharing environments such as, for example, online chat rooms. An online content sharing environment may have a group of user profiles associated therewith, some subgroup of which may be exchanging message content within the online content sharing environment at any given time. If an amount of message data traffic being exchanged and/or a number of user profiles exchanging messages exceeds a corresponding threshold value, the online content sharing environment may be divided into two or more sub-environments. Respective sub-groups of user profiles may then be identified based on association criteria and associated with the various sub-environments.

Abstract: A five-level inverter and its application circuit are provided. The five-level inverter is enabled to output multiple levels of voltage by controlling different conduction combinations of first, second, third, fourth, fifth, sixth, seventh, and eighth switch transistors, as well as a clamping capacitor. Two conduction combinations may be selected for outputting a positive voltage, with currents flowing through the clamping capacitor in opposite directions in the two conduction combinations. Therefore the voltage of the clamping capacitor can be balanced by controlling the two conduction combinations. Similarly, when outputting a negative voltage, the voltage of the clamping capacitor can be balanced by controlling other two conduction combinations. Therefore, a balance of power capacitor voltage can be achieved at full power and full modulation without adding an extra hardware circuit.

Abstract: A central-string inverter device is provided, including a container and multiple string inverters installed in the container. The multiple string inverters are arranged in two rows located respectively on two opposite sides of the container. An intermediate duct is formed between the two rows of string inverters. An air outlet is arranged on each of side walls of the two opposite sides of the container. An air inlet is arranged on each of side walls of the other two opposite sides of the container or on a bottom wall of the container. Pulling structures corresponding to the multiple string inverters are arranged on the side walls of the two opposite sides of the container. Each string inverter is installed or removed through the pulling structure.

Abstract: A central-suing inverter device is provided, including a container and multiple string inverters installed in the container. The multiple string inverters are arranged in two rows located respectively on two opposite sides of the container. An intermediate duct is formed between the two rows of string inverters. An air outlet is arranged on each of side walls of the two opposite sides of the container. An air inlet is arranged on each of side walls of the other two opposite sides of the container or on a bottom wall of the container. Pulling structures corresponding to the multiple suing inverters are arranged on the side walls of the two opposite sides of the container. Each suing inverter is installed or removed through the pulling structure.

Abstract: A photovoltaic inverter system is provided, in which multiple independent inverter units are arranged in a housing, and each of the independent inverter units has independent MPPT function, such that the PV inverter system have multiple MPPT control. In the complex scene such as hills, a maximum power generation of each photovoltaic string can be realized to ensure system energy yield in a case of partial shading or inconsistent orientation. Since independent inverter units are all arranged in the housing, it is convenient for the installation, operation and maintenance.

Abstract: A five-level inverter and its application circuit are provided. The five-level inverter is enabled to output multiple levels of voltage by controlling different conduction combinations of first, second, third, fourth, fifth, sixth, seventh, and eighth switch transistors, as well as a clamping capacitor. Two conduction combinations may be selected for outputting a positive voltage, with currents flowing through the clamping capacitor in opposite directions in the two conduction combinations. Therefore the voltage of the clamping capacitor can be balanced by controlling the two conduction combinations. Similarly, when outputting a negative voltage, the voltage of the clamping capacitor can be balanced by controlling other two conduction combinations. Therefore, a balance of power capacitor voltage can be achieved at full power and full modulation without adding an extra hardware circuit.