118 results about "Charge discharge" patented technology

The invention discloses an automatic identification and expansion communication method based on an RS485 interface, and relates to the technical field of industrial automation communication. The problems that an existing RS485 interface is complex in configuration, poor in protocol compatibility and high in data transmission delay are solved. According to the scheme, the terminal matched resistance and the bias current are adjusted in real time by dynamically measuring the bus equivalent distributed capacitance value, and signal attenuation caused by the capacitance effect is inhibited; a silicon controlled rectifier trigger type charge discharge mechanism is adopted to force bus residual charge to return to zero quickly, and an idle state is accurately judged in combination with a hysteresis comparator; dynamically compensating signal edge distortion and calibrating a sampling window time sequence based on a pre-emphasis filtering and Kalman filtering algorithm; multi-node stable communication is realized through capacitance value driven conflict detection threshold adaptive adjustment and a Poisson back-off model; according to the invention, the real-time performance, the anti-interference capability and the multi-node expansion reliability of RS485 communication in a complex industrial scene are obviously improved, and the debugging and maintenance cost of the system is reduced at the same time.

The invention provides a robust two-way stacked electrostatic protection circuit, which comprises a two-way stacked electrostatic protection module and a floating charge discharge module, and is characterized in that the two-way stacked electrostatic protection module comprises at least one floating node, and the floating node can accumulate residual charges in the process of normal working of the circuit or electrical characteristic test characterization; the floating charge discharge module is composed of a state control module and a charge discharge module, and the state control module monitors the potential state of a floating node in real time and generates a control signal; the charge discharge module responds to the control signal to conduct and discharge charges accumulated by the floating node, the floating charge discharge module comprises an MOS transistor, the MOS transistor is connected with the first port through the state control module, a source electrode of the MOS transistor is connected with the floating node, and a drain electrode of the MOS transistor is connected with the second port. According to the series high-voltage ESD protection circuit, accumulated charges on the floating node in the series high-voltage ESD protection circuit can be discharged in time.

The utility model relates to an H-bridge driving circuit with a discharge branch and a chip, and belongs to the field of motor driving. The driving circuit comprises a driving chip module, a switch control module and a switch misconduction protection module. The switch control module is composed of a triode and MOS tube combined control circuit, it is ensured that grid charges can be rapidly discharged when the IGBT is turned off, and misconduction is prevented. The misconduction protection module enhances the charge discharge capability by providing a low-impedance path, ensures the accurate turn-off of the IGBT, and avoids the influence of surge voltage. The circuit realizes reliability and quick response performance in forward and reverse control and high-frequency switch application of the motor, and is suitable for direct-current motor control, stepping motor control, direct-current-alternating-current converters, direct-current-direct-current converters and other power electronic devices. Through the design, the stability and the safety of the motor control system are effectively improved.

The invention relates to a high-side power NMOS (N-channel Metal Oxide Semiconductor) gate drive circuit in synchronous rectification buck. The high-side power NMOS gate drive circuit comprises a high-voltage storage circuit, a gate charge discharge circuit, a gate voltage control capacitor C2, a level shift circuit and a logic control circuit. The high-voltage storage circuit stores an input voltage VIN on a capacitor C1 and is used for shortening the conduction delay of a high-side power tube MLD1; when the low-side power tube MLD2 is conducted, the gate charge leakage circuit MN1 realizes complete turn-off of the tube MLD1, and prevents the high-side power tube MLD1 and the low-side power tube MLD2 from being conducted at the same time; the grid voltage controls the capacitor C2 to turn on and turn off the MN1 tube under the floating potential. The logic control circuit controls the conduction of the MLD1 and the MLD2 through a first signal SWH and a second signal SWL of the PWM generator, so that the conduction delay is further shortened; the level shift circuit converts a low level into a high level based on VIN so as to prevent the MOS tube from being broken down.

The invention discloses an electrical stimulation device for cycle-by-cycle myoelectricity feedback regulation. An electrical stimulation circuit of the electrical stimulation device is used for releasing a stimulation pulse cycle signal; the electrical value acquisition circuit is used for acquiring electrical value signals of muscle nerves during a stimulation interval and feeding back the electrical value signals to the electrical stimulation circuit; the electric value acquisition circuit comprises an acquisition input module, a frequency selection amplification module and a charge discharge module; the acquisition end of the acquisition input module is connected with the frequency-selecting amplification module through the solid-state relay; a bleeder resistor of the charge discharge module is connected with the frequency-selecting amplification module through a solid-state relay; by adopting the solid-state relay, higher switching speed and silent switching can be realized, and the cycle-by-cycle quick switching of acquisition and stimulation is realized. And the electrical stimulation circuit adjusts electrical stimulation parameters and intensity of stimulation physiotherapy according to the feedback signal, so that the stimulation parameters are adjusted and controlled periodically one by one, and the physiotherapy effect is more accurate and more effective.

The invention relates to the field of chip electrostatic protection, in particular to a high-bandwidth flash memory chip ESD protection circuit optimization method and system. The method comprises the following steps: carrying out multi-point synchronous observation through a charge imaging module, and extracting ESD multi-step observation information; identifying a high density charge region based on the ESD multi-step observation information; defining a safe charge threshold value, performing charge safety evaluation on a high-density charge region, and entering a dynamic regulation and control mode; carrying out charge discharge path dynamic planning based on a dynamic regulation and control mode, and calculating real-time residual charge density; and detecting that the real-time residual charge density is lower than a safe charge threshold value, and completing the protection operation of the local bleeder circuit. The electrostatic discharge risk events higher than the safety threshold are quickly responded and efficiently processed, the safety of the chip circuit is improved, and the service life of the chip is prolonged.

The application discloses a kind of anti-radiation reinforcement circuits of fast radiation charge, it is related to the field of semiconductor integrated circuit design.The present application is to solve the problem of large area, large power consumption of existing circuit level anti-radiation reinforcement mode, and cannot be applied in the anti-radiation reinforcement design of analog circuit.The voltage generating circuit of the present application is used to provide voltage for charge discharge circuit to trigger charge discharge circuit, so that the charge radiated to the output node of charge discharge circuit is discharged.When the positive voltage pulse of output end appears due to the positive charge pulse generated by radiation particle, the gate of positive charge discharge tube appears positive voltage pulse, the positive charge discharge tube is turned on, and the negative charge discharge tube is closed, so that the positive charge radiated to the output end is discharged;When the negative voltage pulse of output end appears due to the negative charge pulse generated by radiation particle, the gate of negative charge discharge tube appears negative voltage pulse, the negative charge discharge tube is turned on, and the positive charge discharge tube is closed, so that the negative charge radiated to the output end is discharged.

The invention provides an electrostatic potential rapid detection device and method based on charge active dissipation and waveform characteristic criteria, the device comprises a sensor shell and a detection module, a wire slot is arranged in the sensor shell, and the detection module is arranged below the wire slot in the sensor shell. The detection module comprises a copper foil electrode, a shielding sheet, an induction electrode and a signal processing circuit, the copper foil electrode is arranged below the wire slot, the induction electrode is arranged below the copper foil electrode, and the shielding sheet is arranged between the copper foil electrode and the induction electrode and is driven by a motor to rotate; the reverse voltage applied to the copper foil electrode can accelerate the charge discharge process of the suspension wire; multiple waveform features are extracted through waveform feature analysis and a state judgment algorithm in the method, and two-stage criteria are combined, so that the misjudgment rate of the on-off state of the hard pressing plate is remarkably reduced.

The present application provides a kind of power conversion device and its control method.Power conversion device (10) has: converter (12), including switching element (34Uu, 34Vu, 34Wu, 34Ud, 34Vd, 34Wd), AC voltage supplied from AC power supply (14) via switch (16) is converted into DC voltage;Filter (24) is arranged between switch and converter, including reactor (46U, 46V, 46W, 48U, 48V, 48W) and capacitor (54U, 54V, 54W), for removing noise;And control unit (64), after making switch to open state, make switching element to on state, so that the charge stored in capacitor is discharged.

To provide a discharge state determination method that can improve the detection speed of residual vibration. [Solution] The pre-charge step includes a timing step of acquiring the elapsed time since the previous pre-charge step was performed, a charging time determination step of determining a charging time for accumulating charge in the capacitive component of the residual vibration detection circuit according to the elapsed time, and a charging step of accumulating charge in the capacitive component of the residual vibration detection circuit according to the charging time. The discharge state determination step includes a determination drive step of supplying a drive waveform signal as a drive signal to a drive element, a residual vibration acquisition step of acquiring a residual vibration detection signal output by the residual vibration detection circuit after the determination drive step, and a discharge unit determination step of determining the state of the discharge unit based on the residual vibration detection signal acquired in the residual vibration acquisition step.

The invention relates to a low-noise small-size active pixel circuit and a working method thereof, the low-noise small-size active pixel circuit comprises a charge transfer circuit, an overflow circuit and a signal readout circuit, the overflow circuit, the charge transfer circuit and the signal readout circuit are connected in sequence, the charge transfer circuit is used for completing charge-to-voltage conversion, the overflow circuit prevents saturated charge from overflowing, and the signal readout circuit is used for reading out signals. And the signal reading circuit is used for completing correlated double sampling and transmitting a signal to a next-stage circuit. According to the invention, an overflow pipe is added in an 8T circuit in the prior art, and charge overflow and adjacent pixel crosstalk under a strong light condition can be effectively inhibited by constructing a controllable charge discharge channel; a row selection transistor is omitted, signal reading is achieved through voltage control, and charging and discharging of a sampling capacitor are controlled by changing a time sequence.

To drive pixels such that driving conditions of a first charge accumulation section which first accumulates charges among a plurality of charge accumulation sections, and driving conditions of other charge accumulation sections which accumulate charges second and thereafter become closer to each other.SOLUTION: In a frame period, driving of unit accumulation periods is executed an accumulation number of times. In an adjustment phase, first driving in which charge is not discharged to a charge discharge section and the charge is not accumulated in a charge accumulation section, and second driving in which the charge is discharged through the charge discharge section, are sequentially executed. A pixel is provided with the plurality of charge accumulation sections sharing a common power supply, the first discharge section that is at least one charge discharge section not sharing the power supply with the plurality of charge accumulation sections, and the second discharge section that is at least one charge discharge section sharing the power supply with the plurality of charge accumulation sections. A distance image processing unit excludes the first discharge section from targets of the first driving and the second driving in the adjustment phase, and sets the second discharge section as a target of the first driving and the second driving in the adjustment phase.SELECTED DRAWING: Figure 1

A capacitive system includes a module circuit card assembly including a first modular keying and alignment mechanism and a second modular keying and alignment mechanism. The first and second modular keying and alignment mechanisms are configured for mechanical alignment and electrical connection with a backplane circuit card assembly (CCA). A capacitor is mounted to the module circuit card assembly and is electrically connected to each of the first and second modular keying and alignment mechanisms through a charge / discharge circuit. The circuit is configured to: charge the capacitor with the module circuit card assembly connected to the backplane CCA, discharge the capacitor with the module circuit card assembly connected to the backplane CCA for proving backup power to the backplane CCA, and discharge the capacitor through a bleed resistor of the circuit upon disconnection of the module circuit card assembly from the backplane CCA.

The utility model provides a display module capable of withstanding ultrahigh charge discharge. The display module is characterized in that a bottom polaroid POL is arranged on one side of bottom ITO glass; the surface ITO glass is arranged on one side of the bottom ITO glass, the surface polaroid POL is arranged on the other side of the bottom ITO glass, and an EC coating is arranged between the surface ITO glass and the surface polaroid POL; a point silver paste PAD area is arranged on the bottom ITO glass; the flexible printed circuit board FPC comprises a grounding end and is electrically connected with one side of the bottom ITO glass. According to the utility model, the high voltage resistant level of the display module is improved, and the influence and damage of malignant static electricity on internal elements and functions of the display module are reduced.

A semiconductor device and a method of manufacturing the same are provided. A semiconductor device includes a capacitor disposed on a substrate, including a lower electrode, a dielectric layer, and an upper electrode; and a discharge structure spaced apart from the capacitor, connected to the upper electrode of the capacitor, and adapted to discharge a charge induced by a plasma process used to form the upper electrode of the capacitor to the substrate.

The present invention provides a battery management system for diagnosing whether a secondary battery having a positive electrode containing lithium iron phosphate as a positive electrode active material has degraded, the battery management system including: a sensing unit configured to measure a voltage and an open circuit voltage of the secondary battery; a memory unit configured to store the open circuit voltage measured by the sensing unit; and a control unit configured to determine that the secondary battery has degraded when an amount of change in the open circuit voltage according to the charge / discharge cycles of the secondary battery satisfies the following condition 1 for five or more charge / discharge cycles. [Condition 1] V n-1 -V n <0.002V (In the above condition 1, V n-1 is the open circuit voltage of the battery measured in the n-1th charge / discharge cycle, and V n is the open circuit voltage of the battery measured at the nth charge / discharge cycle, where n is any integer.

An EV management system (1) includes: a guaranteed characteristic estimation unit (21) that estimates a battery deterioration degree when an EV (13) reaches a vehicle lifespan set in advance, based on information related to an operation history of the EV (13) and information related to a battery deterioration degree based on an actual measurement value; a utilization reserve power calculation unit (25) that calculates a vehicle end-of-lifespan remaining capacity that is a charge / discharge capacity until the EV (13) reaches the vehicle lifespan and a remaining lifespan capacity that is a charge / discharge capacity until a battery (19) reaches a battery lifespan, based on an estimation result of the guaranteed characteristic estimation unit (21), and calculates a reserve power capacity of the battery (19) in a case where the remaining lifespan capacity is larger than the vehicle end-of-lifespan remaining capacity; and an output unit (27) that outputs a calculation result of the utilization reserve power calculation unit (25) as utilization reserve power.

The utility model provides an IGBT driving circuit based on a push-pull structure, and relates to the technical field of power electronic device driving, and the IGBT driving circuit comprises an optocoupler isolation module which is used for receiving a control signal and providing electrical isolation output; the push-pull driving module comprises an NPN type triode Q1 and a PNP type triode Q2 which are complementary and symmetrical; the push-pull driving module is configured as follows: when the optocoupler is conducted, Q1 is saturated and conducted, Q2 is cut off, and a driving current charges an IGBT grid electrode through R2; when the optocoupler is turned off, the Q2 is saturated and turned on, the Q1 is turned off, and the driving current flows through the R3 to discharge the grid electrode of the IGBT. Bidirectional driving current is provided through a push-pull structure, the charge charging and discharging speed of the IGBT grid electrode is increased, the switching loss is reduced, bidirectional driving current is provided through a switch-on resistor R2 and a switch-off resistor R3, the resistance value of the switch-on resistor R2 is selected to be small, the purpose of reducing switch-on loss Eon is achieved, the resistance value of the switch-off resistor R3 is selected to be large, and the purpose of reducing switch-off Vce is achieved.

This invention discloses a gallium nitride (GaN) power device with a wide operating gate voltage. The structure includes a substrate, which, from bottom to top, comprises a substrate layer, a nucleation layer, a buffer layer, a channel layer, a barrier layer, a passivation layer, and an isolation layer. The barrier layer has a voltage-limiting region, a power region, and a discharge region. The first drain metal of the voltage-limiting region and the third gate metal of the discharge region are connected via a first interconnect metal and connected to the input gate voltage. The first source metal of the voltage-limiting region, the second gate metal of the power region, and the third drain metal of the discharge region are connected via a second interconnect metal. This invention, on the one hand, clamps the second gate metal potential of the power region using the saturation characteristics of a GaN HEMT, improving the overall gate voltage swing of the device; on the other hand, it establishes a charge discharge path for the second P-type GaN cap layer of the power region using the switching characteristics of a depletion-mode GaN PFET, enhancing the overall gate stability of the device.

A semiconductor chip includes a detection circuit configured to generate a discharge signal that is enabled when a voltage level of an external voltage is greater than a first set level and configured to generate a voltage control signal that is enabled when an output voltage is generated to have a voltage level of a ground voltage in a test mode, a charge discharge circuit configured to discharge charges of an output node that is included in a driving circuit when the discharge signal is enabled, and the driving circuit configured to generate the output voltage the voltage level of which rises up to a second set level by supplying charges from the external voltage to the output node in response to a driving signal a voltage level of which is decreased during an interval in which the voltage control signal is enabled.

The invention provides a bleeder circuit, a domain controller and a vehicle. The bleeder circuit provided by the embodiment of the invention is applied to the domain controller, the SoC in the domain controller is powered by a plurality of SoC power supplies, the bleeder circuit comprises a control unit and a plurality of charge bleeder units, and each charge bleeder unit is connected with one SoC power supply. When the SoC power supply is abnormal, the control unit can control each charge discharge unit to synchronously conduct the discharge path under the triggering of a control signal provided by the MCU, thereby synchronously and quickly discharging the residual charge of each SoC power supply. According to the embodiment of the invention, the stability and reliability of the domain controller can be improved, and faults of the domain controller such as starting abnormity and repeated restarting after abnormal power-on can be effectively avoided.

A solid-state imaging element includes a semiconductor substrate, a first element unit, and a second element unit. The first element unit includes a light receiving part that generates charges, and a transfer part that transfers a charges. The transfer part includes a first transfer electrode and a second transfer electrode aligned in a transfer direction of the charges, and a discharge gate electrode disposed over a charge discharge region of the semiconductor substrate along the charge transfer region. The first transfer electrode is formed as a first layer, and the second transfer electrode and the discharge gate electrode are formed as second layers. The first transfer electrode includes a portion overlapping a part of the second transfer electrode and a portion overlapping a part of the discharge gate electrode. The second transfer electrode is spaced apart from the discharge gate electrode.

It is an object of the present invention to provide a novel organic sulfur material which is capable of improving a charge / discharge capacity and cycle characteristics, an electrode comprising the organic sulfur material, that is, a positive electrode or a negative electrode, and a lithium-ion secondary battery comprising the electrode. Provided is an organic sulfur material comprising a sulfur-modified acrylic resin, wherein an acrylic resin has peaks around 756 cm−1, around 1066 cm−1, around 1150 cm−1, around 1245 cm−1, around 1270 cm−1, around 1453 cm−1, and around 1732 cm−1 in an FT-IR spectrum.

A distance image pickup element is provided with a pixel circuit formed on a semiconductor substrate, the pixel circuit including at least: a photoelectric conversion element that generates electric charges corresponding to light incident from a space of a measurement object; a charge accumulation section that accumulates the electric charges; a transfer MOS transistor (hereinafter referred to as a TR) provided on a transfer path that transfers the electric charges from the photoelectric conversion element to the charge accumulation section; and a charge discharge TR provided on a discharge path that discharges the electric charges from the photoelectric conversion element. The photoelectric conversion element is formed in a shape of an N-sided polygon (N is an integer of 5 or more) on the semiconductor substrate in a plan view. The total number of the transfer TRs and the charge discharge TRs is N or more, and one transfer TR is provided on each of second sides other than a first side on which the charge discharge MOS transistor is provided among the sides of the photoelectric conversion element.

This invention relates to the field of electronic connectors and circuit protection technology, and discloses a protection method to prevent poor contact caused by metal electrolysis in spring probe connectors. The method includes a main control chip that sends a microsecond-level detection signal to the connector for monitoring. The signal pulse width is less than the electrochemical polarization establishment time threshold, and charge discharge is used to suppress the electrolytic reaction. After detecting liquid conduction, the graphene heating module is controlled to operate at a constant temperature, and the physical drying time is determined using the dynamic voltage division principle of thermal impedance. Heating is then maintained for a preset time to remove microscopic residual moisture. Finally, a cold-state insulation re-inspection is performed. After the connector naturally cools to ambient temperature, the insulation impedance is tested again, and power is restored only when the cold-state impedance meets the recovery standard. This invention avoids electrolytic corrosion caused by the monitoring process and effectively eliminates misjudgments caused by high-temperature false drying and salt moisture return, ensuring the electrical safety of the connector after recovery.

The application discloses a kind of anti-static dust removal mechanisms for liquid crystal display screen production, belong to display panel manufacturing field.The mechanism is sequentially arranged pre-charging suspension zone, standing wave excitation stripping zone and zero potential negative pressure recovery zone along the direction of conveyance.Pre-charging suspension zone utilizes detection probe to identify electrostatic polarity, and makes microdust into electrostatic suspension state by same polarity charging component emitting transient high-voltage pulse charge, and is equipped with the flexible edge grounding component of synchronous linkage to provide charge discharge loop;Standing wave excitation stripping zone utilizes high-frequency alternating air valve drive to set micro-gap air knife of face-to-face, forms spatial oscillation pressure field with preset phase difference above panel, and directly acts on suspended microdust by generated vertical acoustic streaming excitation force and strips it;Finally, by negative pressure recovery zone, microdust is recycled and potential is zeroed.The application is coupled by electrostatic body force repulsion and aerodynamic vertical excitation force in time sequence rigidity, significantly improves the removal rate of submicron microdust, effectively prevents TFT array from being punctured.

A spindle apparatus may include a cover; a rotation body within the cover to be rotatable about a central axis thereof and including a first end portion exposed to the outside and a second end portion opposite to the first end portion; a cutting tool on the first end portion of the rotation body; and an electrostatic discharge (ESD) prevention device on the second end portion of the rotation body. The ESD prevention device includes a charge discharge structure in at least partial contact with the second end portion of the rotation body to discharge charges accumulated in the cutting tool to the outside; a sensor above the charge discharge structure to detect whether the charge discharge structure is in contact with the rotation body; and a driver to move the charge discharge structure so that the charge discharge structure is in contact with the rotation body.

A battery management system comprising: at least one battery comprising two or more sets of cells, each set of cells comprising one or more cells; a multiplexing switch apparatus connected to each set of cells; and at least one controller configured to use the multiplexing switch apparatus to selectively discharge the sets of cells based on at least one criterion. A battery pack comprising: at least one battery comprising two or more sets of cells, each set of cells comprising one or more cells; and an integrated switching control system comprising at least one switch connected to each set of cells, wherein the integrated switching control system is configured to control the at least one switch to discharge the sets of cells sequentially or selectively based on at least one criterion. A battery management method or a battery pack control method.

The invention provides a potential-time conversion type AD converter which does not use a constant current circuit with a complex component structure, has a simple structure, and can obtain stable operation. An AD converter (1) that converts an input potential (Vin) to a digital value is provided with: a capacitance element (24) that accumulates charges at a preset potential difference (a potential difference between a high-potential-side reference voltage (Vs) and a ground terminal); a discharge circuit (a second switching element (22), a discharge element (23)) that discharges the charge charged into the capacitor element (24) at a discharge current (Ids) determined by the input potential (Vin); a timer (26) that measures the discharge time (t) until the charge of the capacitor element (24) reaches a predetermined charge amount by the discharge of the discharge circuit (discharge element (23)); and a time-digital value conversion circuit (30) that converts the discharge time (t) measured by the timer (26) into a digital value.

The invention relates to the technical field of aircraft testing, and discloses a mobile aircraft whole-aircraft thunder and lightning testing device which comprises a mobile high-voltage square cabin, a mobile monitoring square cabin, a charging system, a residual charge discharging unit and a thunder and lightning waveform generating system. Through control of a measurement and control end of a mobile monitoring shelter, a preset lightning waveform is injected into an aircraft test piece, a residual charge discharge unit intelligently starts dual-channel discharge based on real-time voltage monitoring, and meanwhile, a shelter access control lock is linked to form a test closed loop. The device can move freely, an airplane does not need to be transported to a fixed test site, the device is suitable for real-time testing in an external field or beside a production line, the whole machine can be accommodated through the closed lightning waveform generation cabin, the problem of electromagnetic coupling distortion caused by a traditional segmented test is avoided, a dual-channel redundancy discharge design is combined with real-time voltage monitoring, and the reliability of the device is improved. And the residual charge risk is thoroughly eliminated.