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Photocoupler description: With the popularity of battery cars, a good quality car battery charger will extend the life of your battery! And after each charge, it can run farther than after charging with other chargers. In fact, we only need to charge the current and voltage according to the specifications specified by the battery manufacturer, which can maintain a good effect. If you are charging your battery car with an unqualified charger, you will pay more for the battery. The high-power...
In April 2016, "Silicon Valley Iron Man: Elon Musk's Adventure Life" by American technology writer Ashley Vance was officially published. Just looking at the name of this book, the author seems to be interested in letting the reader compare the Musk analog to the IP character Iron Man Tony Stark of Marvel. However, Tony Stark is just a virtual character created by the cartoonist Stan Lee. Musk is very good at interpreting the legend of Iron Man in reality. Tesla electric car is...
This paper introduces the power monitoring system based on human-machine interface, intelligent electric measuring instrument and motor protector, which is designed and implemented by intelligent power distribution cabinet incoming line, feeder line, and outgoing line distributed acquisition and centralized control management. Ankerui Electric Co., Ltd. Abstract: This paper introduces the power monitoring system based on human-machine interface, intelligent electric measuring instrument and...
In this era of rapid development of new energy vehicles, various new terms emerge in an endless stream. BYD Tang's "Fast Electric Four-wheel drive", Lexus's "E-FOUR", Mitsubishi's "Double Motor 4WD", Tesla's "Double Motor All Wheel Drive" and so on. In fact, these are the aliases of electric four-wheel drive. The core performance of the four-wheel drive technology is to increase the grip of the car and to walk freely on any road surface....
The power supply sequence is an important consideration when designing a field programmable gate array (FPGA). Since design requirements may range from three tracks to more than ten tracks, FPGA vendors typically specify power supply sequence requirements. If you follow the recommended power sequence, you can avoid excessive power generation during startup and avoid damage to the unit. There are several ways to achieve the power supply sequence in the system. This article will explain the...
Failure of the Bolt EV battery in the technical zone may cause the vehicle to lose power instantaneously. Toshiba's big-handed spin-off, successfully boosting the market confidence and reducing the wide input DC/DC solution. PCB development status in automotive electronics analysis and prospective example analysis based on vehicle clock How the chip realizes the clock error within 1s of the display
The emergence of electric vehicles is driven by global warming, environmental pollution and energy crises. In 2015, global electric vehicle production and shipments exceeded 500,000 units, of which China exceeded 370,000 units. Electric vehicles must have electrical energy storage devices. Currently, lithium-ion batteries are the first choice and mainstream for power batteries. Lithium-ion batteries have problems such as overcharging, over-discharging, over-current, and over-temperature when...
With the increasing popularity of battery-powered consumer electronics such as portable media players, smartphones and tablets, homes are filled with a large number of different chargers and bundles of wires. The concept of charging devices wirelessly, without any direct connection, has been around for a while, and is now quickly bringing people's interest to make it more flexible and useful. But what are the different technologies and engineers that need to cope with the design challenges?...
4 Analysis of the causes of voltage fluctuations in high-impedance arc furnace From the perspective of electric arc furnace steelmaking, working short-circuit is unavoidable, and it often occurs when arcing or collapse occurs during the melting period. The short-circuit duration of the working moment that occurs when the arc is arced generally does not exceed 1 to 2 s, which is not harmful to the power grid because the short-circuit duration is short. The duration of the short circuit when the...
In this era of rapid development of new energy vehicles, various new terms emerge in an endless stream. BYD Tang's "Fast Electric Four-wheel drive", Lexus's "E-FOUR", Mitsubishi's "Double Motor 4WD", Tesla's "Double Motor All Wheel Drive" and so on. In fact, these are the aliases of electric four-wheel drive. The core performance of the four-wheel drive technology is to increase the grip of the car and to walk freely on any road surface....
Failure of the Bolt EV battery in the technical zone may cause the vehicle to lose power instantaneously. Toshiba's big-handed spin-off, successfully boosting the market confidence and reducing the wide input DC/DC solution. PCB development status in automotive electronics analysis and prospective example analysis based on vehicle clock How the chip realizes the clock error within 1s of the display
The emergence of electric vehicles is driven by global warming, environmental pollution and energy crises. In 2015, global electric vehicle production and shipments exceeded 500,000 units, of which China exceeded 370,000 units. Electric vehicles must have electrical energy storage devices. Currently, lithium-ion batteries are the first choice and mainstream for power batteries. Lithium-ion batteries have problems such as overcharging, over-discharging, over-current, and over-temperature when...
Although Toyota announced this year that it will officially develop pure electric vehicles, the car giants in the country are actually very good at research on lithium batteries, and they should be very effective and worth learning. Since its first production of its hybrid Prius in 1997, Toyota has been an absolute leader in the hybrid vehicle market. In 2003 and 2009, it released the second and third generations of the Prius, but they all used NiMH batteries. Until the Prius Alpha in 2011,...
Yesterday, Xiaomi ecological chain brand Mijia officially released an electric scooter, which is priced at 1999 yuan. The Mijia electric scooter adopts minimalist geometric design, aviation-grade aluminum alloy body, and the net weight of the whole vehicle is 12.5Kg. The unique folding buckle design only needs one click and one button, and the quick folding is realized in 3 seconds. In terms of power, the Mijia electric scooter adopts an integrated brushless DC motor with a maximum torque of...
3. Cooling system design of high speed electric spindle using heat pipe cooling technology The spindle cooling system using heat pipe technology not only cools the shaft housing, but also increases the cooling of the high speed spindle core as shown in Figure 3. By fitting the heat pipe into the housing and the shaft core of the electric spindle for the electric spindle, the front end bearing, the motor stator and the rear end bearing are all set as the evaporation section, and the heat pipe...
As a highly efficient heat transfer element, heat pipes have characteristics different from other heat transfer components. Here, the technology of heat pipe is proposed for the cooling of high-speed machine tool electric spindle, mainly because the following characteristics of the heat pipe provide feasibility for the electric spindle cooling control: (1) Efficient thermal conductivity. The inside of the heat pipe mainly relies on the working liquid vapor and liquid phase to change heat...
The heat source of the high-speed electric spindle can be mainly divided into the following parts. First, the spindle motor is built in the structure of the machine tool spindle, and the heat generated by the high-speed rotation of the motor is the main heat source inside the structure. Second, the high-speed agitation of the rotor of the motor in the main shaft housing causes the air in the inner chamber to also generate heat. The heat generated by these heat sources is mainly dissipated...
Electric spindle heat pipe cooling based on high speed machine tools When the high-speed machine tool is working, the parts of the electric spindle will generate different degrees of heat due to the high-speed rotation of the electric spindle. The relative position and size between the electric spindle after heating and other parts of the machine tool will be different from those before the heat generation, so the thermal expansion will cause an increase in machining error. Especially in the...
Nowadays, in the world of power generation, conventional power generation is still the mainstay. Conventional power generation has three types: thermal power generation, hydroelectric power generation, and nuclear power generation. Among them, thermal power generation is the mainstay, but thermal power generation is accompanied by massive combustion of huge amounts of non-renewable fossil fuels. With environmental pollution caused by the consumption of conventional energy such as coal, oil and...
Tesla currently offers two electric vehicles, the Roadster and the Model S. The Roadster is currently collecting more information, so this article focuses on the Roadster battery management system. The main task of the Battery Management System (BMS) is to ensure that the battery pack operates within a safe interval, provide the necessary information for vehicle control, respond to the response in the event of an anomaly, and respond to ambient temperature, battery status, and vehicle...
Recently, Schneider Electric, a global energy efficiency management expert, announced that it will provide energy efficiency solutions centered on ATV1200 10KV medium voltage inverter products for Units 3 and 4 of the second phase project of China Nuclear Group Sanmen Nuclear Power Co., Ltd. The first application of Schneider Electric medium voltage inverter products in the field of nuclear power. Sanmen Nuclear Power Station is China's first independent third-generation nuclear power...
Recently, the national high-tech research and development plan (863 plan) advanced energy technology field advanced analysis and optimization of key technology key technology key project launch meeting was held in Beihai, Guangxi. At the launch meeting, Professor Huang Xueliang, on behalf of the "Key Technologies for Charging and Discharging of Electric Vehicles and Interaction with the Power Grid", reported to the Ministry of Science and Technology and the expert group on the 863...
For hybrid electric vehicles, in actual operation, in order to achieve rapid switching between the motor and the engine, the system needs to have a short response time; in order to ensure the stability of the vehicle operation, the system needs to have accurate current positioning; at the same time, in order to ensure The reliability and accuracy of the system control also have high requirements on the system sampling accuracy and control speed. The key to studying the energy flow control...
0 Preface This paper focuses on a new design method of electric load control and monitoring system. Based on reliable performance, high accuracy, low power consumption, and small size, this method can better meet the needs of functions such as load management, power analysis, power collection, multiple control methods, and optimized power analysis. It can meet the power load side. Various application requirements for management. l System working principle Figure 1 shows the block diagram of the...
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