Abstract: An explosion-proof venting valve for a battery pack includes a protective cover, a cover seat engaged with the protective cover, and a membrane being water-impermeable and gas-permeable, the membrane being disposed under the protective cover. The explosion-proof venting valve further includes a valve body configured to be connected with a housing of the battery pack, a self-locking mechanism disposed on the cover seat, the protective cover, the cover seat, the membrane and the self-locking mechanism forming a cover assembly defining a venting passage, and a filter element housed in the valve body, the filter element and the valve body defining a valve passage.

Abstract: A single-phase DC/AC inverter has a single-phase inverter bridge with binary switches connected to an RLC low-pass filter. Digital control logic in a control circuit (or in a microcontroller) determines and controls a logic state q determining the position of the switches in the inverter bridge from sensed iL, vC values from the RLC filter. The control logic selects one of multiple possible logic states q based on whether the sensed iL, vC values belongs one of multiple boundary regions of a tracking band in an iL, vC state space.

Abstract: A single-phase DC/AC inverter has a single-phase inverter bridge with binary switches connected to an RLC low-pass filter. Digital control logic in a control circuit (or in a microcontroller) determines and controls a logic state q determining the position of the switches in the inverter bridge from sensed iL, vC values from the RLC filter. The control logic selects one of multiple possible logic states q based on whether the sensed iL, vC values belongs one of multiple boundary regions of a tracking band in an iL, vC state space.

Abstract: A single-phase DC/AC inverter has a single-phase inverter bridge with binary switches connected to an RLC low-pass filter. Digital control logic in a control circuit (or in a microcontroller) determines and controls a logic state q determining the position of the switches in the inverter bridge from sensed iL, vC values from the RLC filter. The control logic selects one of multiple possible logic states q based on whether the sensed iL, vC values belongs one of multiple boundary regions of a tracking band in an iL, vC state space.

Abstract: A single-phase DC/AC inverter has a single-phase inverter bridge with binary switches connected to an RLC low-pass filter. Digital control logic in a control circuit (or in a microcontroller) determines and controls a logic state q determining the position of the switches in the inverter bridge from sensed iL, vC values from the RLC filter. The control logic selects one of multiple possible logic states q based on whether the sensed iL, vC values belongs one of multiple boundary regions of a tracking band in an iL, vC state space.

Abstract: A method for automatically selecting a network and a terminal thereof are provided by the present invention. Wherein, the method includes: prestoring a MCC and MNC list with priority; the terminal acquiring network parameter information; determining that the terminal is located in multiple networks according to the network parameter information; the terminal preferentially requesting to access one network from the multiple networks according to the MNC and MCC list; and the terminal refusing to access some networks according to the MNC and MCC list. With the present invention, the terminal can select the network to access according to the priority of the operator.