38results about How to "Life balance" patented technology

The method includes forced reclaiming step carried out in time of writing sector, and conditional reclaiming step carried out after time of deleting sector. The forced reclaiming step reclaims blocks with most dirty sectors. Conditional reclaiming step is divided into two situations: for reclaiming blocks with number of dirty sectors being reached to a threshold value of dirty sectors; for reclaiming blocks with minimal erasure number. Advantages are: as far as possible to reduce number for erasing blocks, even erasure to make all physical blocks have even service life.

The application provides a vehicle and a power battery heating device and method thereof. According to the power battery heating method, when the current temperature value of a power battery is lowerthan a preset temperature value and the heating condition of the power battery conforms to a preset condition, a three-phase inverter is controlled to enable a three-phase alternating current motor togenerate heat according to the heating energy so as to heat cooling liquid flowing through the power battery; a preset quadrature-axis current enabling the torque value output by the motor to be at aproper value is obtained; a corresponding preset direct-axis current is obtained according to the heating power of the power battery; in the heating process, the three-phase inverter is controlled toadjust the phase current of the three-phase alternating current motor according to the preset direct-axis current and the preset quadrature-axis current, and the direction of the preset direct-axis current changes periodically in the heating process, so that the switching times of upper and lower bridge arms of the power switching device of the same phase are uniform, and the service life of thedevice is balanced.

The application provides a vehicle and a power battery temperature control device thereof. At least one of a three-phase inverter and a three-phase alternating current motor in the power battery temperature control device and a first valve form an electric drive cooling loop through a heat exchange medium pipeline, and the first valve and a power battery form a battery cooling loop through a heatexchange medium pipeline; when a control module detects that the temperature of the power battery is lower than a preset temperature and heating conditions are satisfied, the first valve is controlledto communicate the electric drive cooling loop with the battery cooling loop; the three-phase inverter and the three-phase alternating current motor are controlled to heat a heat exchange medium in the electric drive cooling loop to realize the heating of the power battery; and the three-phase inverter is controlled to adjust the phase current of the three-phase alternating current motor according to the obtained preset direct-axis current and the preset quadrature-axis current in the heating process. In the adjusting process, the direction of the preset direct-axis current changes periodically in the heating process, so that the switching times of upper and lower bridge arms of the same-phase power switching device are uniform, and the service life of the device is balanced.

The invention provides a NVM erasing and writing control method based on a heterogeneous hybrid memory. The method comprises the following steps of: obtaining a NVM page erasing and writing time recording table, wherein the page serial number of a NVM and the corresponding erasing and writing time are recorded in the NVM page erasing and writing time recording table; according to the NVM page erasing and writing time recording table, operating the erasing and writing time corresponding to the page serial number of the NVM by adopting a balancing algorithm so as to obtain the operation value of the erasing and writing time; and writing data in the NVM according to the page of the NVM, the page serial number of which is the operation value. Because the balancing algorithm can ensure that the selection times of all pages of the NVM are relatively random and average, the erasing and writing times of different storage units of the NVM are controlled; the service lives of various storage units are relatively average; and the invention further provides a NVM erasing and writing control system based on the heterogeneous hybrid memory.

The invention discloses an electric energy storage device balancing method, relates to the field of battery management systems, and aims at thoroughly solving two problems of over-high battery balance cost and over-high battery cost of electric devices of new energy automobiles and the like. Various battery units, namely battery packs or single batteries in one battery pack in one electric device carry out differential discharging on electric accessories in turn or respectively; good units discharge more electricity; poor units discharge less electricity; the electric accessories are a direct-current converter, a car lamp, a temperature regulating component, a radio and tape player, a brake pump motor, a power-assisted steering motor and the like; a measure and control unit detects various battery unit parameters and regulates and controls differential discharging on the electric accessories; and the prognostic lifetime of the battery units can also be calculated, persistently tends to the same, and is fully prolonged. The electric energy storage device balancing method is applied to new energy automobiles and the like; the problems that an existing battery management technology is free of a discharge balance, can cure the symptoms, not the disease, and is high in cost are completely solved; the electric energy storage device balancing method is simple and ingenious, does not waste electric energy, can also be combined with a charge balance to achieve a thorough balance; and over-high requirements of the whole industry chain on the uniformity, the materials and the technologies of batteries can be reduced, so that the battery cost is greatly reduced; and the benefits are great.

The invention discloses an intelligent power equalization type electric vehicle. The intelligent power equalization type electric vehicle comprises: a vehicle body on which at least one power supply ports are arranged; two groups of power supply batteries which are fixed on the vehicle body and electrically connected to the power supply ports, wherein each group of power supply batteries is composed of a plurality of rechargeable battery units, a first multiple-winding transformer is arranged between every two battery units, each battery unit is provided with a first bilateral switch on the line connected to the first multiple-winding transformer, a second multiple-winding transformer is arranged between the two groups of power supply batteries, and each group of power supply batteries is provided with a second bilateral switch on the line connected to the second multiple-winding transformer; a starting switch which is arranged on the vehicle body for starting the at least two groups of power supply batteries to supply power to the vehicle body at the same time; and a controller. According to the invention, the bilateral switches are controlled by the controller to make the energy between the batteries transferred through the multiple-winding transformers so as to realize intelligent power equalization.

The invention discloses a multi-pump parallel connection multi-frequency-conversion synchronous speed regulating water supply control system and a control method thereof, and relates to the technicalfield of water supply equipment. The problem that water supply is low in efficiency and instable is solved. The system comprises a preset number of water pumps, frequency converters, a sensor, a PLC,a human-computer interface and an industrial 5G router. The water pumps of a preset number are connected together in a multi-pump parallel connection manner, and each single water pump is connected with the corresponding frequency converter; the PLC is connected with the frequency converters and controls running of the water pumps; the sensor is connected with the PLC; the human-computer interfaceis connected with the PLC and achieves human-computer interaction; and the industrial 5G router is connected with the human-computer interface, and equipment managers can remotely control the systemthrough the industrial 5G router. The control system is simple in structure, low in fault rate and precise in control, stepless speed regulating, synchronous frequency regulating, high efficiency andenergy saving are achieved, the multiple pumps are connected in parallel, and flow is subdivided.

The invention discloses a stretching component of an elevator device, which comprises a plurality of carrying bodies of bearing core threads provided with coating layers, and an enclosing body for enclosing the carrying bodies; wherein, the outer appearance of the enclosing body adopts a flat strap-shaped structure, and the width size of the inclosing body is at least larger than the thickness size thereof; the coating layers and the enclosing body of the carrying bodies are made of non-metal material, the carrying bodies are adjacently arranged, the relative motion can be performed between adjacent carrying bodies, as well as between the carrying bodies and the enclosing body. The invention also discloses the elevator device adopting the stretching component. The stretching component can eliminate the deformation of the enclosing body, and the service life of the stretching component is enhanced; the stretching component has the advantages that the structure is simple, the service life is long, and the friction characteristics are good, and meanwhile the arrangement of an elevator system is more flexible.

A display and manufacturing method thereof. In the display panel (1), as for the plurality of colors display part (2), one display element (2A) is formed by a plurality of unit display regions (20R, 20G, 20B) composed of different colors, and as for the single color display part (3), one display element (3A) is formed by a single color of one unit display region (30). Then, in the display panel (1), the area of the unit display region (30) in the single color display part (3) is formed larger than those of the respective areas of the unit display regions (20R, 20G, 20B) in the plurality of colors display part (2). Thus, to keep life balance of a light emitting element at the whole display region in the display panel which is divided into a single color display part and a plurality of colors display part on the same substrate.

The present invention discloses a task analysis and recommendation system. The system comprises an analysis system (1) and a recommendation system (2). The analysis system (1) is configured to generate and analyze data; and the recommendation system (2) is configured to receive data generated and analyzed by the analysis system (1) and recommend corresponding tasks to users.

The invention relates to a converter surface temperature equalization method. The method comprises the following steps: 1, allowing the combustion air valve, high pressure fuel inlet valve and the low pressure fuel inlet valve at the inlet of a combustor to be in fully-open state; 2, measuring the temperatures of all furnace tubes in a converter by an infrared ray high temperature detector one by one, selecting a combustor of a high temperature furnace corresponding area, and turning down the air inflow of the combustion air valve on the combustor; 3, stabilizing combusting for above 2h after the adjustment of the combustion air valve, and repeating step 2; 4, circulating the step 2 and step 3 several times; and 5, turning down the low pressure fuel inlet valve on the combustor if parts of parts of the surface temperatures of the furnace tubes in the converter are high in order to control, and adjusting the operation of the high pressure fuel inlet valve if parts of a small amount of high temperature furnace tubes exist in order to carry out final improvement. Compared with the prior art, the method has the advantages of safety, simplicity, reliability and strong operationality.

The invention discloses a three-level ANPC circuit which comprises a first switch module, a second switch module, a direct current input end and an alternating current output end. The first switch module comprises at least four connecting ports, and the second switch module comprises at least two connecting ports; three connecting ports of the first switch module are connected with three potential ports of a direct current input end, and a connecting port of the second switch module is connected with the connecting port of the first switch module and an alternating current output end; the first switch module is formed by connecting N double-tube IGBTs (Insulated Gate Bipolar Transistors) in series, or is formed by connecting N thyristors in series; the second switch module is formed by connecting M double-tube IGBTs in parallel or is formed by one double-tube IGBT, N is larger than or equal to 2, and M is larger than or equal to 2. The three-level ANPC circuit can improve the utilization rate of the outer tube and the inner tube to the maximum extent, reduce the cost of the converter and balance the service life of the inner tube and the outer tube at the same time.