The unified social credit code/registration number of Shenzhen Altitude Energy Co., Ltd. is 91440300MA5EU2TD91, the enterprise legal person He Guoqiang, currently the enterpriseBusiness is in business condition.
Hummer electric wheelchair 36 volt lead-acid battery easy to use, durability: Lead-acid battery general deep charge deep discharge 400 times, there is memory, life in about two years. Lithium-ion batteries have strong durability, slow consumption, charging and discharging more than 500 times, and no memory, and the general life is 4-5 years. Volume and weight: the same capacity of the battery, lithium-ion battery size is smaller, lighter weight, so light riding, easy to handle.
The thermal management system of the battery is crucial, it affects the battery life and the range of the vehicle. Air cooling, liquid cooling and direct cooling have their advantages and disadvantages, liquid coolingIt is widely used because of its cost effectiveness and cooling effect. In winter, especially under low temperature conditions, the thermal management of electric vehicles is particularly important, such as the use of heat pump air conditioning technology, can effectively improve the endurance and ensure driving comfort.
Strong energy storage capacity can not only ensure the backbone power grid and distributed power grid to provide efficient and stable power supply, but also a strong guarantee for the large-scale use of intermittent energy such as solar and wind energy, especially in developing countries and the mobile industry have a strong demand for portable energy storage devices. Electrochemical energy storage systems, such as batteries and fuel cells, have broad application prospects in energy storage technology. They canCharge and discharge quickly and efficiently.
For example, for the design of 6-10 layers of memory module PCB, it is better to choose 10/20mil (drill/pad) through holes, and for some high-density small-size boards, you can also try to use 8/18Mil through holes. Under the current technical conditions, it is difficult to use a smaller size of the hole (when the hole depth exceeds 6 times the diameter of the hole, it is impossible to ensure that the hole wall can be uniformly plated with copper); For the power supplyOr ground wire holes can be considered to use a larger size to reduce the impedance.
In the range of ravg 0~0.08 m, the output power increases first and then decreases with the increase of coil turns; In the range of ravg 0.08~ 0.4m, the output power decreases first and then increases and then decreases with the increase of coil turns. For a fixed operating frequency, the quality factor Q mainly depends on the shape and size of the coil and the material used. Standard coil technologies (such as wire winding coils and PCB coils) generally specify quality factor values.
Wireless charging PCBDifferent functions require different components. The required components are: resistor, capacitor, resonant capacitor, resonant coil, MOS tube, control chip, protocol chip.
Control chip: manages the entire wireless charging process, including voltage regulation, power control, communication and other functions. Power amplifier (PA) : Increases signal strength in order to transmit energy efficiently. Oscillators and modulators: Generate high-frequency AC signals for wireless transmission. Coils: Used to generate or receive electromagnetic fields, are a key part of wireless charging.
Wireless charging principle is mainly electromagnetic induction and wireless electromagnetic wave technology. The principle of electromagnetic induction is the basis of wireless charging. Electromagnetic induction occurs when a magnetic field is generated between a charger and a mobile device. Charger endThe resulting alternating current creates eddy currents in the magnetic field, which are sensed by the receiving coil on the mobile device. In this way, power is transferred from the charger to the mobile device.