Abstract: A method for forming an indium gallium nitride quantum well structure is disclosed. The method includes forming a gallium nitride microdisk on a substrate, with the gallium nitride microdisk having an inverted pyramid form and an end face; and forming multiple quantum well layers on the end face, with each quantum well layer including an indium gallium nitride quantum well and a barrier layer. The indium gallium nitride quantum well is grown at a growth temperature adjusted using a trend equation within a temperature range of 480° C. to 810° C.

Abstract: The battery polarity detection system contains multiple detection terminals, a control unit, and a charging/discharging circuit. Each detection terminal is connected to a terminal of a battery. The control unit has an internal default voltage and is capable of measuring voltage differences between the detection terminals and comparing the voltage differences with the internal default voltage. If a voltage difference between a first detection terminal and a second detection terminal is greater than the internal default voltage, the control unit makes said first detection terminal of a greater voltage connected to a positive terminal of the charging/discharging circuit; and the control unit makes the second detection terminal of zero voltage connected to a negative terminal of the charging/discharging circuit, thereby forming a complete loop. The battery polarity detection system can correctly identify the polarity of a battery, avoiding burning down the battery's control or password IC.

Abstract: A structural improvement for a contact pin, in which a contact pin is provided with a main body, from one end of which extends a connecting portion, and a contact portion extends from the other end. The contact portion is provided with tapered sections which form a terminal. Accordingly, when using the contact pin, combination of the tapered sections and the terminal of the contact portion enables accommodating electrical portions of different types of batteries and forming a corresponding electrical contact therewith, thereby achieving practical advancement enabling universal use of the single contact pin to accommodate many kinds of specifications.

Abstract: The present invention relates to a structural improvement for a contact pin, in which a contact pin is provided with a main body, from one end of which extends a connecting portion, and a contact portion extends from the other end. The contact portion is provided with tapered sections which form a terminal. Accordingly, when using the contact pin, combination of the tapered sections and the terminal of the contact portion enables accommodating electrical portions of different types of batteries and forming a corresponding electrical contact therewith, thereby achieving practical advancement enabling universal use of the single contact pin to accommodate many kinds of specifications.

Abstract: A charger device is configured with electric conducting devices corresponding to electric conducting contact points of a battery. The electric conducting contact points are correspondingly associated with the charger device, a detector device and an automatic switching device. When the charger device is connected to the battery, the detector device determines size of charge current, and when the detector device determines that the charge current has not reached a set value, then the automatic switching device switches a normal charge mode to a boosting charge mode. The detector device stops the charger device from charging if the battery has already been charged for a predetermined time but has not reached a set value, and a display device displays that an abnormal state has occurred, thereby enabling the charger device to achieve the objective of providing good charging effectiveness and functionality to detect abnormalities when connecting to a battery.

Abstract: A current-to-voltage detection circuit includes a detection circuit, a reference voltage component, a resistor component, a load, a detection part and an amplifier. The detection circuit uses the reference voltage component to produce a fixed reference voltage which comes up with a reference potential at a point B. When the load is turned on to form a system loop, a grounding end of the detection part can produce a reference potential of tiny mV at a point A. A common reference potential is produced at a point C upon comparing the point A with the point B. When the reference potential at the point A is greater than the reference potential at the point B, a voltage at the output end of the amplifier is converted from a low potential into a high potential, and a circuit of related system can be controlled by a change between the potentials.

Abstract: The present invention provides a charging device with battery capacity analysis function, wherein a charging device includes a control unit, a computing unit, a display unit, a charging unit and a discharging unit. When the charging unit is connected to and charging a battery, the control unit determines whether the power of the battery is fully charged or not, and after the battery is fully charged, then the charging unit stops charging, and at the same time the discharging unit implements discharging of the battery. Moreover, the control unit controls stopping of electric discharge after the battery power is exhausted, which enables the computing unit to determine and calculate actual effective capacity of the battery, and enables the display unit to display the calculated capacity data, after which fully charging of the battery continues, thereby enabling the charging device to achieve battery capacity analysis and charging effectiveness.

Abstract: The present invention provides a device for automatic detection of battery polarity, wherein a detector circuit is structured from detector terminals, detector units, positive voltage electrical connecting units and negative voltage electrical connecting units. Operational procedure involves first connecting battery electrical conducting units with the detector terminals of the detector circuit, when the detector terminals are connected to positive poles of the battery, then one set or more than one set of the detector units of the detector circuit detect positive voltage, which actuate an electrical connection with the positive voltage electrical connecting units, thus connecting positive poles of the detector device to the detector terminals and connecting to positive poles of the battery, at the same one set or more than one set of the detector units determine negative voltage and actuate a connection with the negative voltage electrical connecting units, thereby forming a complete circuit.

Abstract: The present invention provides an improved structure for a battery plug, wherein plug contacts are plugged into a plug socket to supply electric power, which is conducted to conducting wires. Magnets serve as electrical connecting interfaces when the conducting wires are connected to positive and negative poles and electrical contact points of a battery, Moreover, the magnets are each provided with a strong attraction function which is used to prevent the conducting wires from separating from the positive and negative poles of the battery and producing poor contact with electrical contact points of the battery. Furthermore, the magnetic magnets can be freely moved, and are not affected by shape or size of the battery or different positions and spacings of the contact points, thereby enabling the plug device to achieve multifarious electrical connecting functionality, and provides the plug device with increased originality and practicability.

Abstract: The present invention provides a structural assembly of electric exchanger device, structured from a main body, a movable member and a restraining member. The main body is provided with a holding space that is able to accommodate connecting pin sets having different spacings and electrically connected to a detector circuit, thereby enabling the detector circuit to effectively detect polarity of a battery. The movable member and the restraining member further extend from the main body, and the movable member is able to rotate on the main body using press buttons, thereby facilitating accommodating batteries having pins at different positions. Furthermore, the restraining member enables securing a battery disposed within the holding space. Accordingly, the electric exchanger device is able to accommodate electrical connection to a variety of batteries having different pin positions, different spacings of pins or different numbers of pins.

Abstract: A charger device is configured with electric conducting devices corresponding to electric conducting contact points of a battery. The electric conducting contact points are correspondingly associated with the charger device, a detector device and an automatic switching device. When the charger device is connected to the battery, the detector device determines size of charge current, and when the detector device determines that the charge current has not reached a set value, then the automatic switching device switches a normal charge mode to a boosting charge mode. The detector device stops the charger device from charging if the battery has already been charged for a predetermined time but has not reached a set value, and a display device displays that an abnormal state has occurred, thereby enabling the charger device to achieve the objective of providing good charging effectiveness and functionality to detect abnormalities when connecting to a battery.

Abstract: The present invention provides a device for automatic detection of battery polarity, wherein a detector circuit is structured from detector terminals, detector units, positive voltage electrical connecting units and negative voltage electrical connecting units. Operational procedure involves first connecting battery electrical conducting units with the detector terminals of the detector circuit, when the detector terminals are connected to positive poles of the battery, then one set or more than one set of the detector units of the detector circuit detect positive voltage, which actuate an electrical connection with the positive voltage electrical connecting units, thus connecting positive poles of the detector device to the detector terminals and connecting to positive poles of the battery, at the same one set or more than one set of the detector units determine negative voltage and actuate a connection with the negative voltage electrical connecting units, thereby forming a complete circuit.

Abstract: The present invention provides an improved structure for a battery plug, wherein plug contacts are plugged into a plug socket to supply electric power, which is conducted to conducting wires. Magnets serve as electrical connecting interfaces when the conducting wires are connected to positive and negative poles and electrical contact points of a battery, Moreover, the magnets are each provided with a strong attraction function which is used to prevent the conducting wires from separating from the positive and negative poles of the battery and producing poor contact with electrical contact points of the battery. Furthermore, the magnetic magnets can be freely moved, and are not affected by shape or size of the battery or different positions and spacings of the contact points, thereby enabling the plug device to achieve multifarious electrical connecting functionality, and provides the plug device with increased originality and practicability.

Abstract: A current-to-voltage detection circuit includes a detection circuit, a reference voltage component, a resistor component, a load, a detection part, and an amplifier, wherein the detection circuit uses the reference voltage component to produce a fixed reference voltage which come up with a reference potential at a point B. When the load is turned on to form a system loop, a grounding end of the detection part can produce a reference potential of tiny mV at a point A; whereas a common reference potential is produced at a point C upon comparing the point A with the point B. When the reference potential at the point A is greater than the reference potential at the point B, a voltage at the output end of amplifier is converted from a low potential into a high potential, and a circuit of related system can be controlled by a change between the potentials.

Abstract: The invention herein relates to a non-polarity charging device wherein the positive/negative sensing terminals are connected to the battery. When in correct polarity, current flows from positive output clamp output to the battery positive terminal and back to the charging device through the negative output clamp, otherwise, the positive voltage flows through the negative output clamp to the battery positive terminal. Also, even when the battery voltage is below the sensor reading threshold, the manual switch at both battery terminals force-feed electric current through the correct polarity conducting circuit, with positive voltage at the positive clamp output, supplying positive current to effect a complete charging circuit. When the polarity sensing is completed and charging begins, a current indicator circuit lights up to reflect that the charging device is functioning.

Abstract: The invention herein relates to a non-polarity charging device wherein the positive/negative sensing terminals are connected to the battery. When in correct polarity, current flows from positive output clamp output to the battery positive terminal and back to the charging device through the negative output clamp, otherwise, the positive voltage flows through the negative output clamp to the battery positive terminal. Also, even when the battery voltage is below the sensor reading threshold, the manual switch at both battery terminals force-feed electric current through the correct polarity conducting circuit, with positive voltage at the positive clamp output, supplying positive current to effect a complete charging circuit. When the polarity sensing is completed and charging begins, a current indicator circuit lights up to reflect that the charging device is functioning.

Abstract: An automatic detecting and switching vehicle charger having a power control circuit is disclosed. A power supply control circuit is connected to a positive electrode clip and a negative electrode clip for supplying power to a battery of a car; a conductive end of the positive electrode clip being further connected to an input end of the power supply control circuit through a signal conductive wire. The power supply control circuit is formed by a power supply unit, a parallel connected relay unit, a serial connected relay unit, a fault detection unit, a low level positive voltage detection unit, a high level positive voltage detecting unit, a reference voltage unit, an alarm unit and a state display unit. In that, the power sources are switched automatically and thus the user is unnecessary to prepare a plurality of batteries as standby devices.

Abstract: A jumper cable apparatus includes two couplers, and a device for shutting off an electric coupling between the couplers when the couplers are wrongly coupled to electric poles, or for electrically coupling the couplers together when the couplers are coupled to correct electric poles. A relay is coupled between the couplers, and is coupled to another relay for actuating the relay to shut off the electric coupling between the couplers. A positive voltage detecting device may be used for detecting whether the couplers have been correctly coupled to the electric poles or not.