The automobile charging system consists of a power supply, a battery management system, a charging module, a charging control module and a vehicle charging plug. The power supply is the external power supply required by the charging system, which can be AC power or DC power, and the battery management system monitors and maintains the battery to ensure the safety of battery charging and discharging. The charging module is used to change the external power supply into a power supply that ADAPTS to the vehicle charging electricity.
Slow charging system - slow charging pile, charging gun, car charging seat, car charger, high voltage distribution box. Power battery fast charging system - fast charging pile, charging gun, car charging seat, high voltage distribution box.
Constant current charging method: This is one of the conventional charging methods, using a lower charging current to charge the electric vehicle, charging time is longer, up to 10-20 hours. Due to the low installation cost of its charger, electric vehicle home charging facilities and car charging stations use this charging method. The charging period can make full use of the power trough period to charge, thereby reducing the charging cost and improvingTerminal antenna design, how hard is it? The arrival of
G wireless charging design difficulties , but also to the antenna design difficulty to an unimaginable height. First of all, wireless charging design difficulties , 5G terminals should support multi-antenna technology wireless charging design difficulties to meet the requirements of ultra-high transmission rate. 5G's ultra-high speed (Gbps and above) requires strong multi-antenna system performance to support strong data throughput. In order to achieve high speeds, 5G is introducedWith Massive MIMO (Massive MIMO) technology, the terminal antenna needs synchronous support.
In the 5G era, antenna suppliers are under pressure to innovate, including improving high band coverage, enhancing output power, reducing antenna weight, reducing PIM issues, and optimizing design size. Wireless Charging design difficulties They are working hard to meet operators' urgent needs for efficient, low-cost, multi-band antennas to meet the challenges of 5G network upgrades. The base station antenna in the 5G era is undergoing a revolution, which is jointly shaped by technological innovation and the surge in market demandThe future of the field.Difficulty of ultra-wideband antenna: In order to achieve antenna coverage for multiple working bands, and achieve wireless system integration and cost savings, it is necessary to make the antenna smaller in size and simpler in structure, that is, to achieve wide beam coverage while miniaturizing. This is technically difficult for antenna manufacturers.
1, ZTE wireless charging project is actually inInnovation and development stage wireless charging design difficulties , the basic task is still "improve the five maturity" wireless charging design difficulties , should not be rushed to commercial and forced to the industrial operation stage. Instead, it should be wireless charging design difficulties : real breakthrough and real innovation in core technology. Charging power, charging efficiency and charging distance are the three core technologies of wireless charging.
2, market application development bottleneck core wireless charging technology is not perfect wirelessCharging design difficulties ; The radiation region is difficult to achieve long-distance transmission; Long distance positioning is too demanding for hardware (strong) wireless charging design difficulties (/strong); Magnetic resonance height matching can be controlled small; The application scope is limited and has not been extended; Market factors and consumer psychology make developers reluctant to vigorously develop technology.
3, CMM refers to "Capability Maturity Model", its English full name is Capability Maturity Model for Software, English abbreviation is SW-CMM, short for CMM. It describes the various stages of a software organization's development in the practice of defining, implementing, measuring, controlling, and improving its software processes.
1, the wireless charging system mainly uses the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become the connectionBridge for charging base stations and equipment.
2, wireless charging methods are electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, wireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger's power supply coil) will generate a magnetic field, other unenergized coil (mobile phone side of the electric coil) close to the magnetic field will generate current, charging the mobile phone. As shown below.
3, if you use vivo mobile phone, wireless charging is also known as inductive charging or non-contact inductive charging, based on electromagnetic inductionThe device that needs to be charged can be charged by contacting the wireless charger after being energized.
4, it is the first generation of mobile phone wireless charging, the technology is mature, but only single to single short-range charging (qi standard, within 1cm, within 5 watts), and can not be similar to WiFi single-to-multiple charging.
5, the basic principle of wireless charging is to convert the current into a magnetic field, and the magnetic field is transmitted through the air and converted into a current to be transmitted to the intelligent terminal. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V direct current end to supply power to the system directly. After power management modeThe DC output after the block is converted into high-frequency alternating current by 2M active crystal oscillator inverter to supply the primary winding.
6, finally put the phone on the unlimited charger, note that the wireless charging induction area of the phone is generally the middle of the phone.
Does no harm to mobile phones. Wireless charger using wireless charging design difficulties The latest wireless charging design difficulties wireless charging technology Wireless charging design difficulties , by using the alternating magnetic field generated between the coils wireless charging design difficulties to transmit electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
Generally speaking, wireless chargers do not harm mobile phones. The wireless charger uses electromagnetic induction technology, which transmits energy by using a magnetic field generated between coils, coupling the current from the charging disc to the mobile phone battery, for the battery, its charging process is no different from that of an ordinary wired charger.