A charging method capable of reaching or approaching a fully charged state within 1 to 5 hours. It is often used in traction batteries that require charging when recovering in a short time in a short period of time. The normal charging of the battery is about 10 to 20 hours, how can quickly charge without damaging the performance and life of the battery, is a popular research topic.
Circuit characteristics
1. After the output voltage is set (for example, 36V), if the charging bottle plate is disengaged, it causes a set of batteries that are not passing, or a short circuit is present, and the battery end voltage [1] is reduced or zero, at this time charger There will be no output current.
Electric car fast charging station
2, if the charging bottle voltage is deviated from the set voltage, such as the set voltage of 36V, incorrect 24V, 12V, 6V battery, etc., the charger does not output current, if set to 24V, 36V battery, due to charger The output voltage is lower than the battery voltage, and it cannot be charged to the battery. 2, when the two output terminals are short-circuited, due to the trigger circuit of the thyristor SCR in the charger, thus the controllable silicon is not turned on, and the output current is zero.
3. If the battery is positively negatively reversed, the controllable silicon diamond circuit is reversed, no trigger signal, the controllable silicon is not turned on, and the output current is zero.
4, using pulse charging, facilitating extending battery life. Since the low-voltage AC is fully waveled, it is pulsating DC. Only when the peak voltage is greater than the battery voltage, the controllable silicon will be turned on, and when the pulsating DC voltage is in the waveguide area, the controllable silicon is reversed and stopped to the battery. Charging, thus flowing through the battery is pulsating DC.
5, fast charging, full of self-stop. Since the voltage is low in the battery when the charge is started, the charging current is large. When the battery is about to sufficient (36V battery side voltage up to 44V), the charging current will become smaller and smaller because the charging voltage is getting closer to the peak value of the pulsating DC output voltage, and the charging current will become smaller and smaller. Automatic turbulent charging. When the voltage of the battery is charged to the maximum value of the peak of the rectified output, the charging process stops. After testing, the three-section electric vehicle battery 36V (12V / 12AH three sections are connected in series), which can be filled with this charger.
6, the circuit is simple, easy to make, almost no maintenance and maintenance.
The principle and application of fast charge technology
Generally speaking, the mobile phone power is exhausted, and the time is more than 3 hours. In fact, the time is no longer long, but if there is an urgent person, I feel that this time is quite long, the previous solution is to carry actions with you. Power supply, directly connected to the charge when there is no electricity; but now develop fast charge technology, only 30 minutes can be filled with more than half of the amount of power, significantly shorten the charging time. What is fast charging technology? What are the fast charge technologies currently? This article will analyze the principle and application of fast charge technology one by one.
Know mobile phone battery
Before introducing the fast charge technology, let me know the "battery" that allows your mobile phone to use, and the mobile phone battery is a "lithium-ion battery" that can repeatly discharged in numerous battery species. It is also known as "secondary battery". Although the general people often use the lithium ion battery directly to "lithium batteries", the lithium battery refers to a disposable battery that is not repeatedly charged, and the nature of the two is completely different.
Lithium battery is a negative electrode material with a lithium metal or lithium alloy and uses a nonaqueous electrolyte solution, by Ai Di, after which people use different materials to create a variety of batteries, it is also widely used on electronic products. Lithium-Ion Battery is charged and discharged by lithium ions in the positive and negative poles, and when discharges, the lithium ion leaves the negative electrode into the positive electrode and the lithium ion is moved in reverse moving, from the positive electrode Entering the negative electrode to restore a state of reproduction.
Lithium ion battery sign
Lithium-ion batteries that meet the safety standards will definitely have a clear information indication on the battery, so users have to have basic understanding of these indications to understand the meaning of what they have to express. The label that may occur on the battery is: A (ampere) is current; V (volt) is a voltage; W (watt) is electrical power, the product of the voltage and current; WH (Wa Tax) is an hour battery Releaseable power. The battery is represented by AH (ampere hours, referred to as security) or MAH (mA), where H is time, M represents a unit of one thousand times, because the capacity of the mobile phone battery is small, so use MAH In line, the calculation formula is MAH = MA (mA] X h (time).
For example, a battery indicating 2,000 mAh, which means that the battery is used for about 10 hours, but in fact the battery has a self-discharge loss factor, the battery storage time will affect the use time, so the battery The exhausted time is less than the indication time belongs to the normal phenomenon.
▲ Surface-labeled Lithium word is a battery that is an unchargeable lithium battery, that is, a so-called disposable battery.
▲ With the illustration of the illustrated battery, the capacity is 2,900 mAh, the voltage is 3.85V, and 11.2Wh can be released an hour.
▲ With this battery, if you want to know how much it is, it can be calculated through the formula WH = V x MAH / 1000, so it is obtained 7.2V x 1200mAh / 1000 = 8.64WH. , Reading the full text, the technology area
Wireless charging reference design based on BD57020MWV and BD57015GWL
Eraby FOTA upgrade plus monster sharing charging game life constantly
Foxconn acquires Belkin or will become a wireless charging giant
Maxim releases the industry's lowest static current, the highest peak efficiency of ultra-small step-down conversion
What kind of process is divided into electric vehicle charging
Our other product:
