718results about "Reverse polarity correction" patented technology

A method of conducting an operation including a battery. The battery includes a cell having a voltage. Power is transferable between the cell and the electrical device. A controller is operable to control a function of the battery pack. The controller is also operable with a voltage at least one of equal to and greater than an operating voltage threshold. The cell is operable to selectively supply voltage to the controller. The method includes the act of enabling the controller to operate when the voltage supplied by the cell is below the operating voltage threshold.

The invention belongs to the technical field of charging, and provides a charging device of electronic equipment and a power adapter of the charging device. In the process of charging a battery in a conventional charging mode after the power adapter is powered on or resets, when the output current value of the power adapter is within the conventional current range at a preset time interval, the power adapter is in quick charging inquiry communication with the electronic equipment; after the electronic equipment sends a quick charging instruction to the power adapter, the power adapter adjusts the output voltage according to the battery voltage information fed back by the electronic equipment, and when the output voltage meets the quick charging voltage condition preset by the electronic equipment, the power adapter adjusts the output current and the output voltage to charge the battery according to the quick charging mode, and therefore the purpose of quickly charging the battery to shorten the charging time is achieved.

The invention belongs to the technical field of charging and provides a cell charging device and method. In the process of charging a cell by utilizing the cell charging device comprising a power adapter and a charging control module, the power adapter charges the cell in a conventional charging mode first; when the output current value of the power adapter is in a conventional current range in a preset time interval, the power adapter is in quick charge inquiry communication with the charging control module; after the charging control module sends a quick charge instruction command to the power adapter, the power adapter adjusts output voltage according to the cell voltage information fed back by the charging control module; when the output voltage accords with the preset quick charge voltage condition of the charging control module, the power adapter adjusts output current and output voltage according to the quick charge mode so as to charge the cell; and meanwhile, the charging control module introduces a direct current from the power adapter to charge the cell, and thus the purpose of reducing charging time by carrying out quick charge on the cell is realized.

A method of conducting an operation including a battery. The battery includes a cell having a voltage. Power is transferable between the cell and the electrical device. A controller is operable to control a function of the battery pack. The controller is also operable with a voltage at least one of equal to and greater than an operating voltage threshold. The cell is operable to selectively supply voltage to the controller. The method includes the act of enabling the controller to operate when the voltage supplied by the cell is below the operating voltage threshold.

A system for counteracting self-discharge in a storage battery is provided. The system includes a charge supply battery that provides a supply voltage. The system also includes a DC-DC converter circuit that has an input that electrically couples to the charge supply battery and an output that electrically couples to terminals of the storage battery. The DC-DC converter circuit provides a charging voltage at the output that has a magnitude greater than a magnitude of the supply voltage. The storage battery is a carbon battery.

A battery charger for use on lead acid and dry cell batteries having a polarity detection mechanism, automated current routing circuitry and excessive voltage protection. The battery charger of the present invention is configured to provide safe, spark free jump starting.

A power transmission device of a non-contact power transmission system includes a waveform monitoring circuit that generates and outputs a waveform-monitoring induced voltage signal based on a coil end signal of a primary coil, and a power transmission control device that controls a power transmission driver that drives the primary coil, the power transmission control device receiving the waveform-monitoring induced voltage signal and detecting a change in waveform of the induced voltage signal to detect a power-reception-side load state. The waveform monitoring circuit includes a first rectifier circuit having a limiter function, the first rectifier circuit including a current-limiting resistor provided between a coil end node where the coil end signal of the primary coil is generated and a monitoring node where the waveform-monitoring induced voltage signal is generated, performing a limiter operation that clamps the induced voltage signal at a high-potential-side power supply voltage, and subjecting the induced voltage signal to half-wave rectification.

A power transmission control device provided in a power transmission device of a non-contact power transmission system includes a drive clock signal generation circuit that generates a drive clock signal, a driver control circuit that generates a driver control signal based on the drive clock signal, a waveform detection circuit, and a control circuit. The waveform detection circuit includes a pulse width detection circuit that measures a first pulse width period to detect first pulse width information, the first pulse width period being a period between a first edge timing of the drive clock signal and a first timing, the first timing being a timing when a first induced voltage signal that has changed from a low-potential-side power supply voltage exceeds a first threshold voltage. The control circuit detects the power-reception-side load state based on the first pulse width information.

A handheld device for jump starting a vehicle engine includes a rechargeable lithium ion battery pack and a microcontroller. The lithium ion battery is coupled to a power output port of the device through a FET smart switch actuated by the microcontroller. A vehicle battery isolation sensor connected in circuit with positive and negative polarity outputs detects the presence of a vehicle battery connected between the positive and negative polarity outputs. A reverse polarity sensor connected in circuit with the positive and negative polarity outputs detects the polarity of a vehicle battery connected between the positive and negative polarity outputs, such that the microcontroller will enable power to be delivered from the lithium ion power pack to the output port only when a good battery is connected to the output port and only when the battery is connected with proper polarity of positive and negative terminals.

A safety circuit used in low-voltage connecting systems leaves the two low-voltage systems disconnected until it determines that it is safe to make a connection. When the safety circuit determines that no unsafe conditions exist and that it is safe to connect the two low-voltage systems, the safety circuit may connect the two systems by way of a “soft start” that provides a connection between the two systems over a period of time that reduces or prevents inductive voltage spikes on one or more of the low-voltage systems. When one of the low-voltage systems has a completely-discharged battery incorporated into it, a method is used for detection of proper polarity of the connections between the low-voltage systems. The polarity of the discharged battery is determined by passing one or more test currents through it and determining whether a corresponding voltage rise is observed.

The invention discloses a charging circuit and a method for preventing charging power supply from reversely connecting in an electronic cigarette or electronic cigarette case. The charging circuit comprises a direct current input terminal, an unit for preventing charging power supply from reversely connecting, a charge management unit and a rechargeable battery. The unit is electrically connected to the direct current input terminal; the charge management unit is electrically connected to the unit and the rechargeable battery. The charging circuit and method according to these embodiments of the invention can effectively avoid the risk caused by the reverse connection of the charging power supply for the electronic cigarette or the electronic cigarette case; it also has the advantages such as low voltage drop and low power consumption.

The invention relates to a power supply device of a dual voltage electric system of a motor vehicle. According to the invention, a dual voltage electric system of a motor vehicle is provided, that supplies a first and a second voltage level which differ from the reference voltage, wherein power is supplied from at least one electric energy accumulator (12, 24). At least one transformer for transforming both voltage levels (18, 28) is also provided. Supply means (34, 31, 32, 36, 20) are further provided for additional supply of the energy accumulator (12, 24).

A method and a wireless power transmitter for transmitting charging power to a wireless power receiver are provided. The method includes applying the charging power to the wireless power receiver; determining whether a current value of the charging power is greater than a predetermined threshold; and driving the overcurrent protection circuit upon a determination that the current value of the charging power is greater than the predetermined threshold.

A system and method for detecting a reversed battery cell within a battery pack includes battery cells connected together and forming a battery pack and battery output. A transistor circuit is operatively connected to the battery cells and operative for determining when a voltage condition occurs indicative of a reversed battery cell within the battery pack. An indication circuit is operatively connected to the transistor circuit for indicating a reversed battery cell in the battery pack.

An attachable wireless charging device includes a carrier board, a receiving coil, a circuit board, and at least two conductive wires. The carrier board has a back surface on which an adhesive layer is coated. The receiving coil is formed in the carrier board. The circuit board is mounted to one side of the carrier board and includes a power receiving circuit, which includes a receiving control circuit, a resonance control circuit, a regulation circuit, a control circuit, a polarity selection circuit, and a circuit output section, which are electrically and sequentially connected. Electrical connection is established between the receiving control circuit and the receiving coil. The at least two conductive wires are arranged at one side of the circuit board and are electrically connectable with the circuit output section of the circuit board. As such, an attachable wireless charging device featuring automatic determination of polarity connection is provided.

The invention discloses a charging circuit and a method for preventing charging power supply from reversely connecting in an electronic cigarette or electronic cigarette case. The charging circuit comprises a direct current input terminal, an unit for preventing charging power supply from reversely connecting, a charge management unit and a rechargeable battery. The unit is electrically connected to the direct current input terminal; the charge management unit is electrically connected to the unit and the rechargeable battery. The charging circuit and method according to these embodiments of the invention can effectively avoid the risk caused by the reverse connection of the charging power supply for the electronic cigarette or the electronic cigarette case; it also has the advantages such as low voltage drop and low power consumption.

A polarity protection circuit for a battery booster device is provided. According to an exemplary embodiment, the polarity protection circuit is comprised of solid-state devices. Preferably no mechanical or electro-mechanical devices, such as solenoids are included in the polarity protection circuit. The polarity protection circuit is electrically connected to the battery to be charged and to the boosting battery. The polarity protection circuit prevents current flow between the batteries unless proper polarity is achieved.

A safety circuit used in low-voltage connecting systems leaves the two low-voltage systems disconnected until it determines that it is safe to make a connection. When the safety circuit determines that no unsafe conditions exist and that it is safe to connect the two low-voltage systems, the safety circuit may connect the two systems by way of a “soft start” that provides a connection between the two systems over a period of time that reduces or prevents inductive voltage spikes on one or more of the low-voltage systems. When one of the low-voltage systems has a completely-discharged battery incorporated into it, a method is used for detection of proper polarity of the connections between the low-voltage systems. The polarity of the discharged battery is determined by passing one or more test currents through it and determining whether a corresponding voltage rise is observed.

A double-sided bidirectional wireless power device includes a base and a support board. The base includes a power member. The support board has first and second surfaces and is erected on the base and includes a wireless bidirectional power module built therein, which includes a wireless bidirectional power circuit, an induction resonance circuit, a current / voltage detection unit, and a logic control unit that are electrically connected. To operate, the wireless bidirectional power module receives and converts an alternating current signal into electrical power to be transmitted to the power member for storage. The power member is also operable to transmit electrical power to the wireless bidirectional power module to be converted into an alternating current signal for transmission to an electronic device. The presently disclosed device allows for the simultaneous charging of two electronic devices via the first and second surfaces of the support board.

A battery charging apparatus and method. The battery charging apparatus comprises a power supply adapter (100) and a charging control module (200); during a process of charging a battery (300), the power supply adapter (100) charges a battery (300) in a routine charging mode; when an output current value of the power supply adapter (100) is within a routine current range at a preset time interval, the power supply adapter (100) communicates with the charging control module (200) for quick-charging query; after the charging control module (200) sends a quick-charging instruction command to the power supply adapter (100), the power supply adapter (100) regulates an output voltage according to battery voltage information fed back by the charging control module (200); and when the output voltage meets a quick charging voltage condition preset by the charging control module (200), the power supply adapter (100) regulates an output current and the output voltage in the quick-charging mode to charge the battery (300), and at the same time, the charging control module (200) introduces a direct current from the power supply adapter (100) to charge the battery (300), thereby achieving the objective of quickly charging the battery (300) to shorten the charging time.

A battery charger for use on lead acid and dry cell batteries having a polarity detection mechanism, automated current routing circuitry and connected adaptive illumination. The battery charger of the present invention includes an internal battery, an external battery, a solenoid-type switching device and a control circuit. When connected and activated, input from the battery to be jump-started is routed through a control circuit so as to function in conjunction with the internal battery to activate one of a pair of solenoids so as to provide a proper pathway that ensures the configured to provide safe, spark free jump-starting, as well as convenient illumination to the user.

A transistor active bridge circuit (100) provides operation and protection for devices from the effects of battery polarity reversal. The circuit includes first and second field-effect transistors (102, 104) of a first channel type, and third and fourth field-effect transistors (106, 108) of a second channel type that is different from the first channel type. A set of voltage dividers (110, 112, 114, 116, 118, 120, 122, 124) and voltage clamping devices (126, 128, 130, 132) permit the circuit (100) to efficiently operate over a wider range of input voltages, without potential damage to the field-effect transistors.

A safety circuit for use in low-voltage systems improves safety of and additional features to low-voltage connections. When incorporated into a battery, the circuit leaves the battery disconnected from the low-voltage system until it determines that it is safe to make a connection. When the safety circuit determines that no unsafe conditions exist and that it is safe to connect the battery, the safety circuit may connect the battery by way of a “soft start” that provides a connection over a period of time that reduces or prevents inductive voltage spikes on the low-voltage system. A method is used for detection of proper polarity of the connections between the battery and the low-voltage system. When incorporated into a jumper cable, the safety circuit provides communication abilities, can provide test abilities, and improves connection safety and functionality, such as allowing transfer of power between low-voltage systems having different voltages.

A power transmission device includes a resonant capacitor that forms a series resonant circuit with a primary coil, a first power transmission driver and a second power transmission driver that drive the primary coil, and a control IC that outputs driver control signals to the first and second power transmission drivers. The resonant capacitor, the first and second power transmission drivers, andthe control IC are provided on a substrate. An output terminal that outputs the driver control signal to the first transmission driver is provided on a first side of the control IC, an output terminal that outputs the driver control signal to the second transmission driver is provided on a second side of the control IC, and an input terminal that receives a signal waveform at one of coil connection terminals through a waveform detection wiring pattern is disposed on a third side of the control IC. The resonant capacitor, the first power transmission driver, and the second power transmission driver are disposed between a first substrate side parallel to the first side of the control IC and the control IC, and the waveform detection wiring pattern extends in an area between a second substrate side and an extension of the third side of the control IC and is connected to one of the coil connection terminals.

Polarity independent jumper cables are provided for connecting vehicle batteries in parallel, for example when trying to start a vehicle that has a flat battery. The apparatus disclosed has terminal connectors to connect to the terminal posts of each battery. The terminal connectors lead to a switching and control circuit that automatically determines the batteries polarities and makes connections to connect the batteries in parallel, so that users do not need to have any knowledge of the battery polarities. In particular, an indication of the relative state of charge of the batteries is provided prior to the circuit establishing the connections so that when the connection is made, it is made for a predetermined period of time in order to control the current flow through the apparatus. Furthermore, the connection between the batteries is made only when the change in load is sensed on one of the batteries, for example when a vehicle starter motor is connected to one of the batteries.

Disclosed is an add-on communication apparatus attached to an in-cable charging control device integrated with a cable assembly to charge an electric vehicle. The add-on communication apparatus includes a first communication module to make wireless communication with a terminal, a second communication module to make wireless communication with the in-cable charging control device, and a control module. The control module receives a command from the terminal through the first communication module, generates a first control command based on the command, and transmits the first control command to the in-cable charging control device through the second communication module.

An in-vehicle power supply switch device that is suited to charging is provided. A first switch is connected between a first load and a first power storage device. A second switch is connected between the first load and a second power storage device. A third switch is connected in parallel to a set of the first switch and the second switch, and has a smaller resistance value than both the resistance value of the first switch and the resistance value of the second switch.

The invention belongs to the technical field of electric vehicle charging and particularly relates to a method for adjusting output power of charging equipment. In order to solve the problem of low utilization rate of the charging equipment due to energy shortage at the charging peak, the method comprises the following steps of judging whether a charging equipment group is in a full load conditionor not under the condition that a to-be-charged object is newly connected; if the charging equipment group is in the full load condition, determining total deficient output power of the charging equipment group and a maximum drop amplitude of total output power; and when the total deficient output power is greater than or equal to the maximum drop amplitude, reducing the output power of the charging equipment in use to charge the newly connected to-be-charged object. Through the method provided by the invention, after the to-be-charged object is connected to the charging equipment group, theutilization rate of the charging equipment can be maximized through a method of dynamically distributing the output power if the charging equipment group is in the full load condition, so that the problem of low utilization rate of the charging equipment at the charging peak is solved.

A power transmission control device provided in a power transmission device of a non-contact power transmission system includes a drive clock signal generation circuit that generates a drive clock signal, a driver control circuit that generates a driver control signal based on the drive clock signal, a waveform detection circuit, and a control circuit. The waveform detection circuit includes a pulse width detection circuit that measures a first pulse width period to detect first pulse width information, the first pulse width period being a period between a first edge timing of the drive clock signal and a first timing, the first timing being a timing when a first induced voltage signal that has changed from a low-potential-side power supply voltage exceeds a first threshold voltage. The control circuit detects the power-reception-side load state based on the first pulse width information.

A charging system includes cables, a switch, and a wireless receiver. A first cable is coupled to a vehicle to conduct current. A second cable is coupled to the vehicle to conduct a separate current. The switch is coupled to the first and second cables to control current flow to the vehicle. A wireless receiver coupled to the switch facilitates the flow of current to the vehicle when the wireless receiver receives an incoming signal from a transmitter. The method of charging a vehicle comprises coupling the switch to the first cable and the second cable; coupling a first and second boost module to the switch; coupling a controller to the first and second boost module to control the flow of current to the vehicle when a threshold voltage is detected; and coupling a wireless receiver to the switch to facilitate current flow to the vehicle when the wireless receiver receives an incoming signal and a correct polarity is detected.