15results about How to "Reduce voltage difference" patented technology

This utility model discloses a dual-battery charging and discharging circuit, including: a control module, a first switch module, a second switch module, a first battery, and a second battery; the control module is connected to the first battery and the second battery respectively, and is used to detect the voltage of the first battery and the second battery; the control module is also connected to the first switch module and the second switch module respectively, and is used to control the conduction and cutoff of the first switch module and the second switch module according to the voltage difference between the first battery and the second battery, so as to realize the switching of charging and discharging modes. In the discharging mode, the high-voltage battery is given priority to be powered or the batteries are connected in parallel to be powered; in the charging mode, the low-voltage battery is given priority to be charged or the batteries are connected in parallel to be charged.

The utility model discloses a motor and electrical equipment, and the motor includes: stator subassembly, stator subassembly includes stator core, rotor subassembly, rotor subassembly includes rotor main body and is worn in rotor main body's rotor shaft, two bearing seats, two bearing seats are arranged respectively in rotor main body's axial both sides, and rotor shaft passes through two bearings and is supported and is installed in two bearing seats, and bearing includes inner ring and outer ring, and inner ring is connected with rotor shaft electricity, and outer ring is connected with bearing seat electricity, capacitor, capacitor, stator core and one of bearing seat series connection, and two bearing seats pass through first conducting part electricity and are connected, so that capacitor, stator core and two bearing seats form equivalent capacitance. According to the utility model embodiment's motor balances the inner ring and outer ring of bearing, effectively reduces the voltage difference of bearing inner ring and outer ring, improves the problem of bearing electric corrosion, is favorable for reducing bearing noise.

This invention relates to the field of energy storage battery fault diagnosis technology, and particularly to an online fault diagnosis and location method, system, and medium for energy storage batteries. The method includes the following steps: during the operation of the energy storage battery, acquiring the terminal voltage signal and temperature parameters of each cell, and detecting the internal resistance parameter of each cell through AC injection; compiling the internal resistance parameter, terminal voltage signal, and temperature parameters into battery operation data; calculating the voltage deviation between the terminal voltage of each cell within the same battery module and the average voltage of the module based on the battery operation data; and controlling the terminal voltage of each cell to gradually maintain it within a stable period based on the voltage deviation; acquiring the terminal voltage of each cell again based on the adjustment, and comparing the voltage deviation before and after adjustment; this invention improves the accuracy and efficiency of energy storage battery fault diagnosis and location through online fault diagnosis and location, providing a reliable basis for the operation and maintenance of energy storage systems.

The embodiment of the utility model provides a lamp-driver integrated driving chip, a display panel and a display device, relates to the technical field of display, and is used for simplifying circuit layout and reducing power consumption under the condition that the area of the lamp-driver integrated driving chip is limited. The lamp-drive integrated driving chip comprises N pixel circuits and a driving circuit. A first power supply end of the driving circuit is connected with a first power supply; each pixel circuit comprises a first sub-pixel module and a second sub-pixel module, the first sub-pixel module comprises at least one red sub-pixel module, and the second sub-pixel module comprises at least one of a green sub-pixel module, a blue sub-pixel module and a white sub-pixel module. The driving circuit comprises N first driving modules and N second driving modules. The input ends of the first sub-pixel module and the second sub-pixel module are connected with the second power supply, the output end of the first sub-pixel module is connected with the first power supply through the first driving module, and the output end of the second sub-pixel module is grounded through the second driving module.

The utility model discloses a flat wire motor stator, including stator core and stator winding, in the inside wall of stator core along the circumferential even distribution has a plurality of stator slot, every stator slot all along the radial setting of stator core has N slot layer, the utility model discloses can through to each branch's hairpin wire and carry out the even balance of quantity and the wiring of pole pitch balance, reduce the voltage difference existing between branch, thereby reduce the circulation production probability, avoid the influence that motor operating efficiency received.

The application discloses a driving circuit, a driving control method and a display device for reducing the temperature of a driving chip. The driving circuit comprises an independent power supply module and a current control module. The independent power supply module comprises a first power supply circuit and a second power supply circuit which are independent of each other. The first power supply circuit is connected with a positive polarity driving end, and the second power supply circuit is connected with a negative polarity driving end. When the driving chip is working, the first power supply circuit provides driving power for the positive polarity driving end, and the second power supply circuit provides driving power for the negative polarity driving end. The current control module is used for controlling that the current required by the negative polarity driving is provided by the second power supply circuit in the negative polarity driving load stage, and making the current flow through an output buffer circuit inside the driving chip, so as to reduce the voltage difference between the output buffer circuit. The application realizes the temperature reduction by the two-way completely independent power supply, the voltage difference between the output buffer circuit is greatly reduced, the power consumption is reduced under the premise of the unchanged current, and the temperature reduction is realized.

This application relates to the field of linear voltage regulator circuit technology, and discloses a linear voltage regulator circuit applied to a multi-power-domain system, where the multi-power-domain system includes N power supplies, where N is an integer greater than 1. The linear voltage regulator circuit includes: N parallel power transistor branches, each power transistor branch including a transmission gate and a power transistor connected in series, and the source of each power transistor being connected to a power supply; a control circuit including N control signal output terminals, each control signal output terminal being connected to the control terminal of a transmission gate; the N control signal output terminals output control signals for selecting power transistors; wherein, the transmission gates of the N power transistor branches receive the control signals output by the control circuit and turn on the selected power transistors according to the control signals. The linear voltage regulator circuit provided in this disclosure can prevent the current generated in the power transistor from flowing through the control circuit, thereby reducing the voltage difference between the input and output terminals of the control circuit. This application also discloses a power supply device.

The application discloses a pre-charging method and a liquid crystal display screen. The method comprises the following steps: providing a liquid crystal display screen, wherein the liquid crystal display screen comprises a control unit and a timing unit, and the timing unit is used for outputting a gate driving timing sequence of the liquid crystal display screen according to a control instruction; and providing a first gate driving timing sequence to all pixels of the liquid crystal display screen by using the timing unit to perform 3H charging on the pixels to perform point flipping. The 3H charging is pre-charging in a first H unit time and a second H unit time, actual charging after a third H unit time, and the second H unit time is separated from the third H unit time by 1 H unit time. The point flipping is performed by providing 3H charging to the pixels of the liquid crystal display screen row by row, the voltage difference during the charging of the pixels is effectively reduced, the charging rate is improved, and the display quality is improved.

The utility model relates to a simple two-way current sharing circuit, which comprises a first power supply module, a second power supply module and a shared feedback module, and is characterized in that the power supply output end of the first power supply module and the power supply output end of the second power supply module are combined into a power supply node; the power supply node is connected with a power supply signal input end of the sharing feedback module, a first feedback signal output end of the sharing feedback module is connected with a feedback signal input end of the first power supply module, and a second feedback signal output end of the sharing feedback module is connected with a feedback signal input end of the second power supply module. The sharing feedback module is used for generating a first feedback signal and a second feedback signal, and the precision deviation of the first feedback signal and the second feedback signal is kept in the same numerical range, so that the voltage difference between the power supply modules is effectively reduced, the purpose of current sharing is achieved, and the stability and reliability of the power supply system are improved.

The utility model relates to the technical field of LED light sources, in particular to a copper bar power supply structure of an LED light source and a line light source lamp. The copper bar power supply structure comprises an LED chip set, a power supply patch set and a copper bar. The LED chip set comprises at least two LED chips arranged in the first direction. The power supply patch group comprises at least two power supply patches arranged in the first direction, the power supply patch group is located on at least one side of the LED chip group, and the power supply patches are electrically connected with the LED chips; the copper bars are attached to and electrically connected with the multiple power supply patches located on the same side and connected with the power source positive electrode or the power source negative electrode. According to the copper bar power supply structure of the LED light source, the plurality of LED chips are supplied with power through the copper bars, and the voltage difference among the LED chips can be reduced, so that the brightness difference among the LED chips is reduced, and the uniformity of overall illumination is improved.

This invention discloses a method for implementing an image sensor with a switchable lateral overflow integrating capacitor (LOFIC) voltage within a pixel unit. The pixel unit comprises at least one photodiode, a transfer transistor, a floating diffusion region, a reset transistor, a LOFIC, and a voltage switching unit. The photodiode is connected to the floating diffusion region via the transfer transistor. The first electrode of the LOFIC is coupled to the voltage switching unit, which is adapted to switch the first electrode of the LOFIC to different voltages. The voltage of the first electrode of the LOFIC is adjusted by timing control of the voltage switching unit to reduce the dark current of the image sensor and improve image delay.

This invention provides a voltage control method for erasing 3D NAND memory. When the bias voltage of the word line of a true memory cell is at the erase control voltage, the bias voltage of the well-doped region is raised to the erase working voltage and maintained. During the period when the bias voltage of the well-doped region rises to a first intermediate voltage, the bias voltage of the word line of the pseudo memory cell is maintained at a first preset voltage. Then, the word line of the pseudo memory cell is set to a floating state, wherein the first preset voltage is less than the first intermediate voltage. In this way, the voltage difference between the word line where the pseudo memory cell is located and the word line where the adjacent true memory cell is located is reduced, avoiding tunneling between the word line where the true memory cell is located and the word line where the pseudo memory cell is located, thereby avoiding threshold voltage drift of the pseudo memory cell, avoiding reduction of memory cell string current, and thus avoiding read errors of the true memory cell.

The application provides a display substrate, a display panel and a display device, relates to the technical field of display, and can reduce the luminance difference problem of different columns of pixels. The display substrate comprises: data lines extending along a first direction; gate lines extending along a second direction, the gate lines intersecting the data lines to form a pixel area; first semiconductor connecting parts and second semiconductor connecting parts, the orthographic projections of the first semiconductor connecting parts and the second semiconductor connecting parts on a substrate layer all overlap the orthographic projection of the gate lines on the substrate layer; first pixel electrodes and second pixel electrodes are arranged in the pixel area, the first semiconductor connecting parts are electrically connected to the first pixel electrodes through first electrode lead lines, the second semiconductor connecting parts are electrically connected to the second pixel electrodes through second electrode lead lines, the first semiconductor connecting parts and the second semiconductor connecting parts are connected to the same data line, the length of the first electrode lead lines along the second direction is less than the length of the second electrode lead lines along the second direction; the distance between the first electrode segments and the nearest gate lines is less than the distance between the second electrode segments and the nearest gate lines.

The invention discloses a discharging device, a charging and discharging system and an operation method thereof. The discharging device comprises an energy storage element and a load unit. The energy storage element performs constant-current charging and enables the load unit when the voltage of the energy storage element reaches the reference voltage, so that the energy storage element is discharged to the constant voltage at the constant voltage.

This application provides a linear voltage regulator circuit and an electronic device having the same. The linear voltage regulator circuit includes an input power supply, a first current mirror module, a drive path, a regulated output path, and a current limiting module. The input power supply provides an input voltage. The first current mirror module has a power input terminal, a drive output terminal, and a voltage output terminal. The power input terminal is coupled to the input power supply to receive the input voltage. The drive path has a drive input terminal and a ground terminal. The current limiting module is coupled to the drive path. By raising the voltage of the drive output terminal when the input voltage is lower than or equal to a set value of the regulated voltage, the voltage difference between the power input terminal and the drive output terminal of the first current mirror module is reduced, so that the transistor coupled to the drive path in the first current mirror module operates in the linear region, thereby reducing the current in the drive path and helping to reduce the static power consumption of the linear voltage regulator circuit.