53results about How to "Suppress voltage drop" patented technology

A electrically driven vehicle (100) has high-voltage battery (42) for driving an electric motor (10) for driving the vehicle, a solar battery (24), a charging DC / DC converter (36) supplying electrical power generated by the solar battery (24) to the high-voltage battery (42), a charging control ECU (38) that performs charging control of the charging DC / DC converter (36) for charging the high-voltage battery (42), and a low-voltage power supply DC / DC converter (34) that receives a part of the electrical power generated by the solar battery (24) and generates a power supply voltage that is supplied to the charging control ECU (38).

The invention relates to a fuel cell stack structure capable of suppressing a drop in voltage resulting from flooding or contamination at an end in a direction in which cells are laminated, particularly in a cell at a gas outlet / inlet end. In this fuel cell stack structure, a layer which is irrelevant to power generation and in which a gas flow channel is formed is provided at least at a gas outlet / inlet end of a laminated-cell body of a fuel cell such as a solid-polyelectrolyte fuel cell. The layer is constructed of a dummy cell having a gas flow channel but no MEA. In addition, according to this fuel cell stack structure, both a fuel gas flow channel and an oxidative gas flow channel are formed in one face of the layer which is irrelevant to power generation and in which the gas flow channels are formed.

A semiconductor device including: a semiconductor region having a first semiconductor face and a second semiconductor face connected to the first semiconductor face and having an inclination with respect to the first semiconductor face; a gate insulating film formed on the first and on the second semiconductor faces; a gate electrode formed on the gate insulating film including a part on a boundary between the first semiconductor face and the second semiconductor face; a source impurity region formed in the semiconductor region so as to overlap the gate electrode within the first semiconductor face with the gate insulating film interposed between the source impurity region and the gate electrode; and a drain impurity region formed in the semiconductor region directly under the second semiconductor face at least.

A characteristic selection / current upper limit value calculation section 64 selects a cranking upper limit characteristic map MP2 in the case where a cranking state is detected by a cranking state supposition section 63, and selects a non-cranking upper limit characteristic map MP1 in the case where the cranking state is not detected. Upper limit limitation on a current caused to pass through a motor 20 is relaxed in a cranking upper limit characteristic as compared with a non-cranking upper limit characteristic. Consequently, it is possible to prevent excessive current limitation during cranking.

A printing method that can suppress drops in voltage due to discharging of piezo elements is achieved. A printing method includes: generating a drive signal for driving a piezo element by selecting, based on print data, either a first original drive signal having a unit signal for defining the start to the end of an operation of causing the piezo element to eject ink by changing a voltage of the piezo element using a first reference voltage as a reference, or a second original drive signal having a unit signal for defining the start to the end of an operation of causing the piezo element to eject ink by changing the voltage of the piezo element using a second reference voltage as a reference; ejecting ink using the piezo element by applying the generated drive signal thereto to charge / discharge the piezo element; and charging the piezo element so that the voltage thereof attains either the first or second reference voltage during a predetermined period during which neither the first nor the second original drive signal is selected.

A power conversion method of a power conversion device including a plurality of primary side ports disposed in a primary side circuit and a plurality of secondary side ports disposed in a secondary side circuit magnetically coupled to the primary side circuit with a transformer, the power conversion device adjusting transmission power transmitted between the primary side circuit and the secondary side circuit by changing a phase difference between switching of the primary side circuit and switching of the secondary side circuit, the power conversion method including: calculating a transmission efficiency setting an adjustment value of the phase difference to a value obtained by dividing the transmission efficiency by a specified efficiency; and setting the phase difference to a value obtained by dividing the calculated value by the adjustment value when the adjustment value is less than the specified value.

In a magnet switch for a starter, a first contact portion and a second contact portion are connected in parallel between a battery and a motor. The first contact portion makes contact through a resistive component so that the motor starts rotation at low speed. By this, a pinion is pushed in an axial direction by an axial component of splines and brought into mesh with a ring gear in a condition that its rotation is restricted. Thereafter, the second contact portion makes contact in accordance with further movement of a plunger so that electric power is fully supplied to the motor through the second contact portion, thereby starting engine. A fixed contact of the first contact portion is made of a carbon material. The resistive component is provided by the carbon material.

The invention provides an engine starting device which prevents intermittent disconnection with a simple circuit structure without damaging the function of the starting device even in the case of action failure of a short-circuiting switch. The engine starting device includes: a starter switch 5 which is serially connected between a power supply 3 and a starting engine 2; a resistor 6 which is serially connected with a starting engine switch; the short-circuiting switch 7 which makes the resistor be short out; and a timing circuit 8 which controls the on-off of the short-circuiting switch, electrifies the starting engine by the power supply via the starter switch and the resistor through shutting off the starter switch 5 to shut off the short-circuiting switch 7 after a delay period afterthe starter switch is shut off, such that the short-circuiting switch 7 is shut off and the resistor is short out; the contact of the short-circuiting switch 7 is a normally closed contact; before the contact of the starter switch 5 is closed, the contact of the short-circuiting switch 7 is disconnected; and after the contact of the starter switch is closed, the contact of the short-circuiting switch 7 is closed.

The transistor array substrate of the present invention reduces the voltage drop of wiring. The transistor array substrate includes: a substrate; a plurality of driving transistors arranged in a matrix on the substrate, and a gate insulating film is sandwiched between the gate, the source, and the drain; a plurality of signal lines connected to the The gates of a plurality of drive transistors are laid out together and arranged to extend in a predetermined direction on the substrate; a plurality of supply lines are laid out together with the sources and drains of the drive transistors, and are arranged across the gates. The electrode insulating film is arranged crosswise with the plurality of signal lines, and conducts with one of the source and drain of the driving transistor; a plurality of power supply wirings are respectively stacked on the plurality of supply lines along the plurality of supply lines .

A pixel circuit including: a driving transistor; a light emitting element; and a power supply line; wherein the driving transistor is connected between the power supply line and a predetermined electrode of the light emitting element, and the power supply line is formed as multilayer wiring, and an interpolating capacitance is formed such that the power supply line formed as the multilayer wiring and another conductive layer are opposed to each other at a distance.

The invention discloses a selenium-doped lithium-rich manganese-based positive electrode material as well as a preparation method and application thereof. In the structure of the selenium-doped lithium-rich manganese-based positive electrode material, selenium in an anionic form is distributed in a lithium-rich manganese-based positive electrode material, the chemical general formula of the positive electrode material is mLi2MnO3-delta Se2 delta / 3.(1-m)LiTMO2-deltaSe2delta / 3, TM is at least one of Ni, Co and Mn, 0.2 <= m <= 0.8, and the delta is greater than 0 and lower than 2; and the contentof selenium in the positive electrode material is 0-5% in percentage by mass. The positive electrode material has relatively good lattice stability and electrode / electrolyte interface stability, notonly can inhibit lattice oxygen loss in a circulation process, but also can inhibit electrolyte decomposition, relieves the capacity attenuation and the voltage drop of the lithium-rich manganese-based positive electrode material in the circulation process, and effectively overcomes the problems of poor rate capability and the like of existing positive electrode materials. The preparation method is simple and easy to popularize.

Switch cells (20) are provided in a circuit block having standard cells (1) arranged therein, said switch cells being capable of switching between electrical connection and disconnection of power supply wires (3) extending in the X direction and strap power supply wires (11) extending in the Y direction. One switch cell (20) is arranged on the strap power supply wires (11) for every M number (M being an integer of at least 3) of power supply wires (3). The switch cell (20) arrangement positions in the Y direction differ from each other in adjacent strap power supply wires (11) and are the sameat every M number of strap power supply wires (11) in the X direction.

A liquid crystal display device comprising a liquid crystal display panel 21 having pixels each disposed on an intersection between plural scan lines and plural signal lines, a flexible wiring substrate having mounted thereon a drive IC 24 electrical connected to the liquid crystal display panel 21 for supplying video signals via video signal lines, to one video signal line of which N number of the signal lines are allocated, wherein N is an integer of two or more, an analog switch circuit switch-connected to a signal line selected from the N number of the signal lines in each of the video signal lines, and the control lines 26 formed across a region in which the drive IC 24 has been mounted on the flexible wiring substrate 23 and drawn from a center of the flexible wiring substrate 23 onto the liquid crystal display panel for supplying at least a power source for driving the analog switch circuit or a control signal.

The invention discloses a full automatic mixed type reactive power compensation control system and method for a shield tunneling machine. The control system comprises a DSP controller, a fuzzy PI decoupling controller, a capacitor cyclic controller and a reactive power automatic compensation system, wherein the reactive power automatic compensation system comprises a TATCOM and a TSC group. The full automatic mixed type reactive power compensation control method for the shield tunneling machine comprises the steps of enabling the DSP controller to perform reasoning and judging, determining the switching group number of the TSC group and a TATCOM expected output current value, providing a switching signal and a compensation current fixed value, and enabling the TATCOM to receive a PWM signal and to output a feedback current; enabling the TATCOM to provide inductive reactive power and capacitive reactive power with relatively low capacity; and enabling the TSC group to provide high-capacity capacitive reactive power. By combination of the advantages of the TATCOM and the TSC group, stepless regulation of the reactive power can be realized, while power grid voltage drop and voltage fluctuation and resonance between the TSC group and the system can be suppressed; and the control system is low in cost and simple to control, and capable of satisfying dual demands of reactive compensation high capacity and high precision of a power supply system of the large-sized shield tunneling machine.

The invention provides a method for manufacturing separators for batteries. At least the vicinity of the fiber surface of the non-woven fabric is sulfonated, and the sulfonation process includes the pretreatment of exposing the non-woven fabric to a water vapor stream with a nearly saturated humidity. process and the process of immediately exposing the nonwoven fabric subjected to the pretreatment process to an air stream containing SO3 gas, and the nonwoven fabric composed of fibers mainly made of polyolefin resin characterized by the above-mentioned sulfonation process is A method for manufacturing a battery separator based on a base fabric, a separator manufactured by the manufacturing method, and a battery using the separator.

The invention provides a liquid ejecting head, a liquid ejecting head unit, and a liquid ejecting apparatus, which can suppress a crosstalk between piezoelectric elements and through a partition wall, as well as a voltage drop, thereby suppressing deviation of ink droplet landing position and stabilizing liquid ejection characteristic, thus contributing to improving printing quality. The piezoelectric element includes a first electrode serving as an individual electrode, a piezoelectric layer, and a second electrode serving as a common electrode is attached on a face of a flow path substrate via a vibrating plate. A piezoelectric active portion defined by the first electrode and the second electrode serving as a substantial driver of the piezoelectric element is provided in a region opposing the pressure chamber. An opening formed by removing the second electrode and the piezoelectric layer is provided in a region of the piezoelectric element opposing the partition wall. A wiring electrode and the second electrode provided on the flow path substrate are connected via a common lead electrode provided on the piezoelectric active portion, and the common lead electrode is provided at least on the partition wall inside the opening.

An anodizing apparatus includes: a power supplying drum for supporting a strip of an anodizable metal or a composite conductive foil having an anodizable metal on one surface thereof in close contact, at least a portion of the power supplying drum supporting the strip being conductive; opposing electrodes facing the power supplying drum; an electrolysis tank filled with an electrolytic solution in which a portion of the power supplying drum that supports the strip and the opposing electrodes are immersed; non conductive protective members that overlap the transverse ends of the strip on the power supplying drum and portions of the power supplying drum that the strip is not in contact with to protect the overlapped portions from the electrolytic solution; and a drive section that causes the strip and the protective members to move together within the electrolytic solution, synchronized with the rotating speed of the power supply drum.

The invention provides an application method of a battery utilizing a lithium-rich manganese-based solid solution material as a positive electrode. The method comprises the following steps: performing electrochemical charging and discharging activation treatment on the battery utilizing the lithium-rich manganese-based solid solution material as the positive electrode; performing charging and discharging circulation on the activated battery, wherein the cut-off voltage of the battery subjected to charging and discharging circulation is less than the charge cut-off voltage during the activation treatment. According to the method provided by the invention, the lithium-rich manganese-based solid solution material releases full capacity by virtue of activating, a layer structure is transformed into a spinel structure quickly, and then the battery can be subjected to charging and discharging circulation in a mild condition, and the material still has higher capacity under a lower charging cut-off voltage. Meanwhile, in the mild condition, the un-removed lithium ion plays a role in supporting the structure, so that the lithium-rich manganese-based solid solution material keeps a stable structure in the process of electrochemical cycling, without obvious voltage falling, and thus voltage attenuation is restrained effectively.

A battery system for a vehicle includes an auxiliary battery, first electric loads electrically connected to the auxiliary battery through first relays, a first electronic control unit electrically connected to the auxiliary battery through a second relay, the first electronic control unit being configured to turn on and off at least the first relays and the second relay, and a collision detection device configured to transmit a collision detection signal to the first electronic control unit when detecting a collision of the vehicle. The first electronic control unit is configured to switch the first relays from on to off, while keeping the second relay turned on when receiving the collision detection signal.

The invention relates to a fuel cell stack structure capable of suppressing a drop in voltage resulting from flooding or contamination at an end in a direction in which cells are laminated, particularly in a cell at a gas outlet / inlet end. In this fuel cell stack structure, a layer which is irrelevant to power generation and in which a gas flow channel is formed is provided at least at a gas outlet / inlet end of a laminated-cell body of a fuel cell such as a solid-polyelectrolyte fuel cell. The layer is constructed of a dummy cell having a gas flow channel but no MEA. In addition, according to this fuel cell stack structure, both a fuel gas flow channel and an oxidative gas flow channel are formed in one face of the layer which is irrelevant to power generation and in which the gas flow channels are formed.

The invention discloses a circuit for suppressing the impact of the switching of a DC capacitive load on a DC microgrid. The circuit is applied to a soft start circuit for DC-DC switching power supply. The soft start circuit is connected to two ends of the DC capacitive load in parallel. When a switching switch carries out a switching operation, the soft start circuit can suppress current surge and voltage drop caused by the switching operation. Through the circuit, a problem of large DC bus voltage fluctuation of the DC microgrid caused by the switching of the DC capacitive load is solved, the stability of the DC micro-grid system is improved, and the interference of the switching of the DC capacitive load to the normal operation of other DC loads on a same-level DC bus is avoided.

The invention relates to a lithium molybdate coated lithium-rich manganese-based positive electrode material as well as a preparation method and application thereof. The structure of the lithium molybdate coated lithium-rich manganese-based positive electrode material comprises a lithium-rich manganese-based layered oxide inner core and a Li2MoO4 coating layer, and a Mo6+ concentration gradient transition layer exists between the lithium-rich manganese-based layered oxide inner core and the Li2MoO4 coating layer; in the transition layer, the concentration of Mo6+ is gradually reduced from one side of the coating layer to one side of the inner core, and the thickness of the transition layer is 0.1-10 nm; the chemical expression of the Li2MoO4 coated lithium-rich manganese-based layered oxide positive electrode material is xLi[Li0.33Mn0.67]O2.(1-x)LiMO2@Li2MoO4, 0<x<1, wherein M at least comprises two elements of Mn, Ni, Co, Al and Mg.

A power conversion method of a power conversion device including a plurality of primary side ports disposed in a primary side circuit and a plurality of secondary side ports disposed in a secondary side circuit magnetically coupled to the primary side circuit with a transformer, the power conversion device adjusting transmission power transmitted between the primary side circuit and the secondary side circuit by changing a phase difference between switching of the primary side circuit and switching of the secondary side circuit, the power conversion method including: calculating a transmission efficiency setting an adjustment value of the phase difference to a value obtained by dividing the transmission efficiency by a specified efficiency; and setting the phase difference to a value obtained by dividing the calculated value by the adjustment value when the adjustment value is less than the specified value.

The invention discloses a lithium-rich manganese-based ternary composite precursor, a positive electrode material and a preparation method of the positive electrode material, and the positive electrode material is spherical or sphere-like particles, is formed by compounding three layers of materials, and comprises an inner core, a transition layer and a shell. The preparation method of the positive electrode material comprises the following steps: mixing a first nickel salt, a first cobalt salt, a first manganese salt, a first aluminum salt and an M2 salt to obtain a first metal liquid; second nickel salt, second cobalt salt, second manganese salt, second aluminum salt and M3 salt are mixed to obtain second molten metal; the first molten metal and the second molten metal are mixed to form third molten metal; carrying out a first mixing reaction to obtain a manganese-rich hydroxide core; forming a transition layer outside the inner core through a second mixing reaction; forming a ternary hydroxide shell outside the transition layer through a third mixing reaction to obtain a precursor; and mixing the precursor with a lithium source, and sintering to obtain the positive electrode material. The lithium ion diffusivity of the whole material can be remarkably improved, and the thermal stability, the first efficiency, the cycle performance and the rate capability of the material are remarkably improved.

The invention belongs to the technical field of integrated circuits and particularly proposes a unit structure, an array framework and an operation algorithm that can effectively suppress IR drop and read / write interference for a three-dimensional vertical stack resistive random access memory (3D VRRAM). Aiming at the problem of interference of a sneaking path existent in the 3D VRRAM on read / write operation, the interference is reduced by adopting a bidirectional diode (2D) as a 2D1R unit structure assisting in gating. Aiming at the problem of excessively high IR drop in the 3D VRRAM, the IR drop is reduced by adopting a shunting technology. In addition, the influence of the IR drop on the read operation is overcome by adopting a reference plane as a read reference, and corresponding read operation method and read circuit are proposed. Aiming at the influence of the IR drop on the write operation, a Write-Verify technology is proposed.

A printing method that can suppress drops in voltage due to discharging of piezo elements is achieved. A printing method includes: generating a drive signal for driving a piezo element by selecting, based on print data, either a first original drive signal having a unit signal for defining the start to the end of an operation of causing the piezo element to eject ink by changing a voltage of the piezo element using a first reference voltage as a reference, or a second original drive signal having a unit signal for defining the start to the end of an operation of causing the piezo element to eject ink by changing the voltage of the piezo element using a second reference voltage as a reference; ejecting ink using the piezo element by applying the generated drive signal thereto to charge / discharge the piezo element; and charging the piezo element so that the voltage thereof attains either the first or second reference voltage during a predetermined period during which neither the first nor the second original drive signal is selected.

A front substrate (1) and a rear substrate (2) composed of translucent sheets of glass are disposed to face each other with an almost constant interval, and the peripheral portions of the two sheets of glass are bonded together with frit glass (4) via side walls (3) to form a flat discharge container. Fluorescent substance layers (5a, 5b) are formed on the inner sides of the front substrate (1) and the rear substrate (2) to convert a ultraviolet ray emitted from a discharge medium into a visible light. External electrodes (6) for applying high voltage and external electrodes (7) for applying low voltage are alternately arranged on the outer surface of the rear substrate (2). A plurality of slender spacers (8) are arranged between the front substrate (1) and the rear substrate (2) at constant intervals to keep constant the space between the front substrate (1) and the rear substrate (2) and prevent damage due to lamp implosion to be caused by pressure difference between the inside and outside of the discharge container. A linear spacer (8) is disposed so as to be contained within the maximum width of an external electrode (6), and one electrode (6) is apparently divided into two pieces. One electrode (6) is exposed to respective discharge spaces divided by a linear spacer (8), and is allowed to work as electrodes (10) in respective discharge spaces, whereby it is possible to stably light up respective discharge spaces.

The invention provides an electrode material, and a preparation method and application thereof. The preparation method comprises the following steps: respectively dissolving a transition metal salt solution and sodium borohydride in absolute ethyl alcohol to obtain a solution A and a solution B, dispersing a positive electrode material in the solution A to obtain a solution C, slowly adding the solution B into the solution C in a protective gas atmosphere, stirring for reaction after charging is finished, and then filtering, washing and drying to obtain the electrode material. The electrode material has good lattice stability and electrode / electrolyte interface stability at the same time, lattice oxygen loss in the circulation process can be inhibited, and dissolution and migration of transition metal can be inhibited, so that capacity attenuation and voltage drop of the positive electrode material in the circulation process are relieved, and the problems of high surface alkalinity, poor rate capability, serious attenuation of capacity and voltage in the cycle process and the like of the existing positive electrode material are effectively solved.