H02H5/083

Hazard detection system for portable electrical devices

A power control apparatus can include a power circuit configured to transfer power to a load circuit. The apparatus can also include one or more environmental sensors configured to register environmental data including at least one of movement, hazardous gas, environmental temperature, environmental moisture, and collision data associated with the apparatus. The apparatus can also include a power controller circuit operatively connected to the one or more environmental sensors and the power circuit, the power controller circuit being configured to receive the environmental data from the one or more environmental sensors, determine whether the received environmental data exceeds a predetermined threshold, and in response to determining that the received environmental data exceeded a predetermined threshold, interrupting supply of power from the power circuit to the load circuit.

Electronic control unit

An electronic control device for use in a motor vehicle including an electronic housing, a capacitor sensor, and a control unit. The capacitor sensor may be provided with a capacitor sensor electrode arranged inside the electronic housing. The control unit may be configured to output a trigger signal in response to receiving a measured capacitance value deviating from a threshold value, from the capacitor sensor electrode, indicative of a conductive liquid in the electronic housing.

Inductive Power Transfer Unit and a Method of Manufacturing an Inductive Power Transfer Unit
20210104885 · 2021-04-08 ·

The invention relates to an electronic unit and a method of manufacturing an electronic unit (1), wherein the unit (1) comprises at least electronic component, wherein the unit (1) comprises at least one housing (2) for the at least one electronic component (4, 5, 6, 7) of the unit (1), wherein the unit (1) comprises at least one auxiliary power supply line (8), wherein the unit (1) further comprises an RCD switch element (12), wherein the at least one auxiliary power supply line (8) is fitted with the RCD switch element (12) and at least one exposed section (19) in such a manner that the RCD switch element (12) triggers when the at least one exposed section (19) of the auxiliary power supply line (8) is exposed to a conductive fluid, wherein the at least one exposed section (19) is arranged in a fluid collection volume of the housing.

Anti-short-circuit detection apparatus and user terminal
10910818 · 2021-02-02 · ·

An anti-short-circuit detection apparatus includes a probe, a detection resistor, a switching circuit, and a detection circuit. The probe is disposed between a power port and a ground port. A first terminal of the detection resistor is electrically coupled to a power circuit of the user terminal, and a second terminal of the detection resistor is electrically coupled to the probe. The switching circuit is electrically coupled to the first terminal of the detection resistor and a processor of the user terminal and is configured to perform switching to be grounded or ungrounded under the control of the processor. The detection circuit is electrically coupled to two terminals of the detection resistor and the processor, and is configured to trigger the processor to control the user terminal to issue a short-circuit warning or turn off the power circuit when the short-circuit current is not zero.

Water detection circuit, electronic device including the same, and water detection method

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.

Corrosion protection circuit for serial bus connector
10826285 · 2020-11-03 · ·

A circuit to protect a USB connector from corrosion on its CC pins includes a first node coupled to a first power source or a first pull-down resistor, a second node coupled to the CC pins and a second power source, and a second pull-down resister coupled to the second node. A detection circuit compares the voltage at the first node with a first reference voltage. The detection circuit also compares the voltage at the second node with second and third reference voltages. A control logic circuit generates a corrosion detection signal in response to the voltage at the second node being less than the third reference voltage and greater than the second reference voltage when the voltage at the first node is greater than the first reference voltage.

Device with controllable switch terminal voltage

A device with controllable switch terminal voltage, comprising: a switch signal unit for outputting a corresponding switch signal according to the state of a switch, wherein the switch is coupled between the switch signal unit and an output of a power supply; a biasing unit coupled to the switch signal unit for outputting a bias voltage to the switch signal unit; wherein when the switch is open and a conductive liquid and/or the stream of conductive liquid exists inside the switch, the biasing unit cooperates with the switch signal unit so as to control the terminal voltage of the switch and the current flowing through the switch. The disclosed switch design allows the switch terminal voltage to be less than 1V when the switch is opened, which greatly depresses the electrochemical reaction of the switch, thus prolonging the switch life, and avoiding the possibility of hydrogen explosion.

Power electronics installation

A power electronics installation having electrically active parts and a measuring sensor for measuring a water level within the installation. The power electronics installation is configured in such a way that the installation switches off automatically when the measuring sensor senses the water level.

Electronic control device

An electronic control device for use in a motor vehicle includes an electronic housing for accommodating an electronics system that includes a circuit board, and a resistance sensor for detecting water that has penetrated into the electronic housing. The resistance sensor includes at least two sensor electrodes, each of which is present, at least in one section, in an uninsulated state with respect to the interior of the electronic housing, and a control unit that is configured to detect and evaluate a measured resistance value between the two sensor electrodes. The control unit is further configured to output a trigger signal when the detected measured resistance value or its deviation from a normal value meets a trigger criterion that is characteristic of a contact closure between the two sensor electrodes that is caused by the presence of water in the electronic housing.

CORROSION PROTECTION CIRCUIT FOR SERIAL BUS CONNECTOR
20200235563 · 2020-07-23 ·

A circuit to protect a USB connector from corrosion on its CC pins includes a first node coupled to a first power source or a first pull-down resistor, a second node coupled to the CC pins and a second power source, and a second pull-down resister coupled to the second node. A detection circuit compares the voltage at the first node with a first reference voltage. The detection circuit also compares the voltage at the second node with second and third reference voltages. A control logic circuit generates a corrosion detection signal in response to the voltage at the second node being less than the third reference voltage and greater than the second reference voltage when the voltage at the first node is greater than the first reference voltage.