Disclosed are an overload protection apparatus and method, and a storage medium, a compressor and an electric appliance. The apparatus includes: a first overload protection mechanism and a second overload protection mechanism, wherein the first overload protection mechanism is arranged to perform overload protection on the pressure of a compressor to be protected, and/or the second overload protection mechanism is arranged to perform overload protection on at least one of the temperature and the current of the compressor to be protected.

Circuit interrupter positioned between supply circuit and load circuit includes fault detection circuit that senses wave forms to the load circuit, fault processing circuit that detects presence of fault and generates fault output signal when fault detected, and control circuit switch connected to fault processing signal output, wherein control circuit switch is opened by presence of fault output signal, thus isolating load circuit from supply circuit. Preferably fault processing circuit and control circuit are optically linked, such that when fault is detected, control circuit switch is opened by optical fault output signal, thus isolating load circuit from the supply circuit. Circuit interrupter may couple another circuit interrupter via power distribution control unit, optionally manageable remotely via automated control interface.

A battery and an electrical battery monitoring device are disclosed having a first group of sensing switches connected in series on a first monitoring circuit, the sensing switches, a second group of electrical sensing switches connected in series on a second monitoring circuit, an input unit to provide an input to the first and second monitoring circuits, a monitoring unit to receive an output from the first and second monitoring circuits, wherein the monitoring unit receives at least two outputs from two measuring points of the first monitoring circuit, the two measuring points being separated by at least one sensing switch. The location of a defective battery cell may be early detected and precisely located by the monitoring of the battery cells in rows and columns.

Systems, devices and methods for sensing moisture within an electronic device are disclosed. A device may include a housing and a display defining and exterior of an electronic device and an interior of the electronic device. Further, the device may include an integrated circuit (IC) within the electronic device and comprising a control element. The device may also include a moisture sensor such as an inductive sensor, a capacitance sensor, or both. The moisture sensor, which may be part of the IC, together with the control element may sense moisture within the electronic device.

A battery and an electrical battery monitoring device are disclosed having a first group of sensing switches connected in series on a first monitoring circuit, the sensing switches, a second group of electrical sensing switches connected in series on a second monitoring circuit, an input unit to provide an input to the first and second monitoring circuits, a monitoring unit to receive an output from the first and second monitoring circuits, wherein the monitoring unit receives at least two outputs from two measuring points of the first monitoring circuit, the two measuring points being separated by at least one sensing switch. The location of a defective battery cell may be early detected and precisely located by the monitoring of the battery cells in rows and columns.

An electronic device and a cooling monitoring system for an electronic device receiving power from a power supply. The electronic device includes a board at least in part immersed in an immersion case comprising a first heat-transfer liquid for cooling of the electronic device, one or more sensors configured to measure an operating parameter of the first heat-transfer liquid, and a controller communicably connected to the one or more sensors, the controller being configured to receive signals from the one or more sensors and, in response to determining that the signals indicate that the operating parameter of the first heat-transfer liquid is above a threshold, cause to disconnect the electronic device from the power supply.

An interface control circuit comprises an interface signal transceiver circuit coupled with an interface which includes at least one interface pin for transmitting and/or receiving an interface signal through the interface, and a protection circuit for generating a protection control signal according to a capacitance of a first interface pin. During a predetermined detection time period starting from an attaching event, the protection circuit senses the capacitance of the first interface pin, and determines that there is an electrolytic substance existing and coupled with the first interface pin when the capacitance is larger than a predetermined first capacitance threshold. The protection control signal triggers the interface signal transceiver circuit to execute a protection operation. The interface includes the first interface pin and the second interface pin, and the first interface pin and the second interface pin can be one same pin or separate different pins.

An electrical control system may include a sensor unit with an attachment mechanism for mounting the sensor unit to a fluid pipe, a fluid flow sensor, and a signal generator configured to generate a signal indicating at least one of whether the flow sensor detects a fluid flow in the fluid pipe or whether the flow sensor detects no fluid flow in the fluid pipe. The system may also include a control unit having one or more of an electrical plug, an electrical socket, an interruptible circuit between the electrical plug and the electrical socket, a receiving device configured to receive the signal from the sensor unit, and a processor configured to interrupt the circuit between the electrical plug and the electrical socket based on at least one of receipt of the signal or interruption of the signal.

An electrical control system may include a sensor unit with an attachment mechanism for mounting the sensor unit to a fluid pipe, a fluid flow sensor, and a signal generator configured to generate a signal indicating at least one of whether the flow sensor detects a fluid flow in the fluid pipe or whether the flow sensor detects no fluid flow in the fluid pipe. The system may also include a control unit having one or more of an electrical plug, an electrical socket, an interruptible circuit between the electrical plug and the electrical socket, a receiving device configured to receive the signal from the sensor unit, and a processor configured to interrupt the circuit between the electrical plug and the electrical socket based on at least one of receipt of the signal or interruption of the signal.

A water detection circuit includes a voltage detector electrically connected to at least one first pin of a connector and configured to detect a first voltage level from the at least one first pin at a first point in time and a second voltage level from the at least one first pin at a second point in time, a detection logic configured to compare the first voltage level with a first threshold and compare the second voltage level with a second threshold and a power controller configured to block current from being supplied to the at least first pin before the second point in time, after the first water detection operation is completed, wherein the detection logic determines that water is present in the connector when water is detected in at least one of a first water detection operation and a second water detection operation.