31results about How to "Stable power supply performance" patented technology

The invention discloses a power device, which is used for supplying power for a load of network power receiving end equipment. The power device comprises a first input end, a second input end, an output end and a master control circuit, wherein the first input end is connected to a first power supply to obtain electric energy; the second input end is connected to a second power supply to obtain electric energy; the output end is connected to the load to supply an output voltage to the load; the master control circuit is connected to the first input end, the second input end and the output end and detects the voltage of the second input end; and when the voltage of the second input end exceeds a preset value, the connection of the first input end and the first power supply is cut off to supply the electric energy provided by the second power supply to the load.

The invention provides conductive polyphenylene sulfide resin. The conductive polyphenylene sulfide resin is prepared from components in percentage by mass as follows: 25%-60% of polyphenylene sulfide, 15%-40% of silicate glass fibers, 5%-40% of calcium carbonate, 0.1%-1% of carbon black and 1%-15% of carbon fibers. According to the performance requirement of a power battery, a formula of the polyphenylene sulfide resin is improved, and the polyphenylene sulfide resin with good contact resistance value stability is obtained; the power battery prepared from the conductive polyphenylene sulfideresin as a cover plate has stable power supply performance and good mechanical performance and heat resistance; besides, by means of technical improvement, the defect rate of electric performance is controlled within 0.1% from 20%, so that production cost is reduced, product quality is improved, and the high-standard requirement of the power battery for a new energy automobile is met. The invention further provides a preparation method of the conductive polyphenylene sulfide resin and the power battery.

The invention discloses a knapsack type lithium battery power generation box and a using method. The knapsack type lithium battery power generation box comprises a box body and a battery rack arrangedin the box body, wherein the box body comprises a frame assembly and locking devices installed on the two sides of the frame assembly; each locking device comprises a corner fitting fixing device; each corner fitting fixing device comprises a U-shaped corner fitting fixing base welded to the side portion of the frame assembly, a corner fitting connecting rod penetrating through two side plates ofthe U-shaped corner fitting fixing base, a rotating handle sleeving the corner fitting connecting rod, a positioning handle base assembly installed at the bottom part of one side plate of the cornerfitting fixing base, a sliding block positioning handle installed on the positioning handle base assembly and a stop assembly; and each he positioning handle base assembly comprises a U-shaped clamp spring base and at least two clamp springs arranged on the U-shaped clamp spring base. The knapsack type lithium battery power generation box adopts a lithium iron phosphate battery for power supply, noise and pollution are avoided, only a charging pile needs to be configured for charging, normal power supply can be achieved at the temperature of-30 DEG C, heating is not needed, and the power supply performance is stable.

The invention relates to an ethylene-propylene-diene monomer material used for an electric wire and a preparation method of the ethylene-propylene-diene monomer material. The ethylene-propylene-diene monomer material comprises the following components in parts by weight: 85-115 parts of an ethylene-propylene-diene monomer, 2.5-10 parts of acrylic acid, 1.5-7 parts of sodium stearate, 1.5-6 parts of an initiator, 2.5-8 parts of an antiager, 0.5-1.5 parts of an inorganic filler and 1-2 parts of a fire retardant. According to the preparation method, a mixture is added to a double-screw extruder to carry out extrusion pelleting. The ethylene-propylene-diene monomer material used for the electric wire is high in strength, good in anti-aging, good in flame retardant property, stable in power supply property and convenient to process.

A new charging pile power distribution system. The charging pile system includes a charging pile main control module, a charging pile controlled module, a charging billing module, a charging controller module, and a charging power supply module. The microgrid subsystem includes a wind power generation module, a photovoltaic power generation module module, power storage module, and micro-grid control module; the city grid subsystem includes a city grid module, a power load module, a city grid power consumption estimation module, a primary power storage module, a city power grid control module, and a micro-grid grid-connected module ; It can solve the waste of electricity in scattered micro-grids, which is beneficial to the peak-shaving and valley-filling of the national grid; through the monitoring of the charging power of each charging pile in the area and the statistics and regulation of the user's electricity consumption according to the electricity consumption estimation module of the city grid, the charging and distribution Control the charging power to provide charging users with a variety of charging modes for users to choose. By controlling the change of charging unit price, users are encouraged to use full power charging during low power consumption periods, so as to maintain the efficient circulation of electric energy in the city grid.

The invention provides a peak-shaving power supply control method and device, which relate to the technical field of power supply. By acquiring the current time, the power supply period is determinedaccording to the corresponding relationship between the current time and the preset power supply period, wherein the power supply period comprises a first period, a second period and a third period, and finally the power generation device and the energy storage device are controlled to supply power according to the power supply period. The peak-shaving power supply control method and device provided by the invention have the effect of more stable power supply.

The invention discloses a universal type connecting device for an emergency power supply vehicle and a low-voltage overhead line. A connecting device is arranged between the emergency power supply vehicle and the low-voltage overhead line. One end of the connecting device is connected with the emergency power supply vehicle, the other end is connected with the low-voltage overhead line, and circuit connection with an isolation protection function is established between the emergency power supply vehicle and the low-voltage overhead line. The connecting device comprises an insulated cross arm assembly and a switch cabinet. An emergency power supply of the emergency power supply vehicle firstly passes through the switch cabinet and then is connected with the insulated cross arm assembly through a pole climbing cable connected with the switch cabinet, and the pole climbing cable is connected with a circuit of the low-voltage overhead line through the insulated cross arm assembly. The universal type connecting device is applicable to the fields of providing emergency protection, power generation and on-load transformer replacement work for customers along the low-voltage overhead line in a transformer area. The connection is reliable. A power supply effect is stable. The security is good. The universal type connecting device also can match the performance of novel working projects such as replacement of a transformer and a drop fuse under load.

The invention relates to a micro-thermal photoelectric power generation device which comprises a power generation device body, an air inlet, a burning chamber, an air outlet and a photocell. The air inlet is formed in one end of the power generation device body and used for allowing gas fuel to enter the combustion chamber. The combustion chamber is arranged in the cavity of the power generation device body, and one end of the combustion chamber is connected with the air inlet for combustion of gas fuel. The photocell is arranged on the outer wall of the combustion chamber. The other end of the combustion chamber is connected with the air outlet formed in the other end of the power generation device body, and the air outlet is used for exhausting combusted waste gas. The micro-thermal photoelectric power generation device is stable in power supply capacity and high in energy utilization rate, and has a great utilization scene.

The invention provides a low-voltage starting circuit capable of being started at high voltage and working in a wide range, comprising a first N switching transistor and a second P switching transistor which are used for switching different polarities and conducting. The connection pin of the first N switching transistor and the connection pin of the second P switching transistor are different from each other and are connected to the input end and the output end of a power supply; the base pole of the first N switching transistor is coupled with the node of a voltage stabilizing circuit, and the base pole of the second P switching transistor is coupled with the node of a switching controlling unit; and the switching controlling unit comprises a voltage dividing circuit, a compound stage switching controlling circuit and a voltage hysteresis circuit. Therefore, the structure of the low-voltage starting circuit is effectively simplified, the volume is reduced, the cost is lowered and the high-voltage bearing capacity is greatly improved. In addition, the low-voltage starting circuit can work in a wider range, can be started at both low voltage and high voltage and can still supply power stably when the high voltage critical value and the low voltage critical of the voltage hysteresis circuit are switched frequently.

The invention discloses a backpack-type lithium battery power generation box and a method of use, comprising a box body and a battery rack built in the box body; the box body includes a frame structure and locking devices installed on both sides of the frame structure ; The locking device includes a corner piece fixing device, and the corner piece fixing device includes a U-shaped corner piece fixing seat welded on the side of the frame, a corner piece connecting rod passing through the two side plates of the U-shaped corner piece fixing seat, and sleeved in the corner. It is composed of a rotating handle on the connecting rod of the piece, a positioning handle seat installed at the bottom of one side plate of the corner piece fixed seat, a sliding block positioning handle installed on the positioning handle seat, and a stopper. The positioning handle seat consists of U-shaped circlip seat and at least two circlips arranged on the U-shaped circlip seat; powered by lithium iron phosphate battery, no noise and pollution, only need to configure charging pile for charging, and can supply power normally at ‑30℃ , No heating and stable power supply performance.

The invention discloses a self-unlocking power conversion circuit, which comprises a thermal battery powering switch and the like, wherein a third sampling resistor and a first reference source are connected with a positive electrode input end of a first logic judgment operational amplifier, an output end of the first logic judgment operational amplifier is connected with the thermal battery powering switch, a first sampling resistor and a second sampling resistor, the first sampling resistor is connected in series with the second sampling resistor, the third sampling resistor is connected with the first reference source, a fourth sampling resistor is connected with a second reference source, and the fourth sampling resistor and the second reference source are both connected with a negative electrode input end of a second logic judgment operational amplifier. The self-unlocking power conversion circuit can effectively prevent a missile thermal battery from affecting operation of a carrier power supply during the activation process of the thermal battery when the carrier power supply and the missile thermal battery are in a grid-connected power supply state, and can prevent the problem of reliable output of the thermal battery after the thermal battery is activated.

A novel charging pile power distribution system is characterized in that a charging pile subsystem comprises a charging pile main control module, a charging pile controlled module, a charging billingmodule, a charging controller module and a charging power supply module, and a microgrid subsystem comprises a wind power generation module, a photovoltaic power generation module, a power storage module and a microgrid regulation and control module; the commercial power grid subsystem comprises a commercial power grid module, a power utilization load module, a commercial power grid power utilization estimation module, a first-level electric quantity storage module, a commercial power grid regulation and control module and a microgrid grid connection module. Electric quantity waste of scattered micro-grids can be solved, and peak clipping and valley filling of the state grid are facilitated; the charging power of each charging pile in the region is monitored, the charging and distributionquantity is regulated and controlled according to the statistics of the mains supply power grid electricity consumption estimation module on the electricity consumption of the user, and the charging power is controlled to provide multiple charging modes for the charging user for the user to select. By controlling the change of the charging unit price, the user is encouraged to adopt full-power charging in the off-peak period of power utilization, and efficient circulation of electric energy of a mains supply network is maintained.