1, the circuit board of the shared charger is provided with a power supply circuit, a main control circuit, a first switch circuit, a current detection circuit and a GSM circuit.
2. Make the charging bank work normally. The six copper cores at the bottom of the charger, the first and sixth are grounded, the third and fourth are the charging input feet, and the second and fifth are the reset switch of the pulse switch, which are all components to ensure that the charging bank can be used normally.
3, Q5 chip. The shared power bank chip uses Angbao on-brightob2112 series chips, skipping the Q5 chip, which has an EN foot locked by a single-chip microcomputer, which is packaged together with two parts of the single-chip microcomputer and booster.
4, then in the design of shared chargingWhat kind of security protection does Baoshi have? Overcharge protection Lithium battery overcharge protection is achieved by using a power management chip to detect the voltage, and the chip is in the baseline setting state (mobile phone lithium batteries are generally 5V).
5, you pull out of the shared charging treasure is not out of use, you may also need to scan the above QR code to pay, if there is no payment, it is not enough, or your shared charging treasure is bad, so it can not charge.
6, the input interface and output interface of the mobile power supply can be charged. The output interface of the charging bank is used for devices such as mobile phonesNotebook power management chip is bad what symptom? '> Notebook power management chip bad what symptom?
1, shortened battery life The rapid decline in battery power, so that you always worry about the computer suddenly shut down? This is also a clear sign of power management chip failure! Replace the power management chip in time to give your computer a new lease of life.
2, serious. The power management chip on the notebook motherboard is referred to as EC, which is the chip with the most integrated functions in addition to the CPU, north bridge and South bridge, and is mainly responsible for opening and closing the various voltages, of course, there are many other functions. The problem is serious,It's time to change the chip.
3, the battery is broken, or it is locked, the screen will be partially lit when the laptop is charging. The power management chip of the notebook motherboard is broken, and there is a problem with the charging and discharging chip, which will also cause the screen to partially light up when the notebook is charging.
4, the management chip is not likely to be bad, should be caused by overdischarge. Some notebooks, just connected to the power, the charging light will flash a few times, try to charge, it thinks that the charge can not be stopped.
1. At this time, the voltage of the first pin and the third pin of DW01 will be added to the 54th pin of 8205A respectively, and the two electronic switches in 8205A are in the on-state because their G pole is connected to the voltage from DW01, that is, the two electronic switches are in the on state.
2, DW01A is a chip widely used in 6-pin lead-acid battery protection circuit, with over charge, over discharge, over current and short circuit protection functions. FS8205A is a highly integrated 6-pin lead-acid battery protection chip with overcharge, overdischarge, overcurrent and short circuit protection, as well as temperature protection and protectionBalancing function.
3. RESET: reset the input line. When the input terminal is at high power level, all internal registers (including control registers) are cleared and all I/O ports are set to the input mode.
4, is a double field effect tube, 5 is the grid. The above situation is related to DW01. First check whether pin 5 of 8205 is welded to the output pin of DW01. Can the resistance in the figure below deteriorate? If no, replace DW01 (R5402N, AIC1811, etc.).
5, must be correctly connected to the direction of S and D, usedThe mos tube controlling the charging circuit should make the parasitic body diode opposite the direction of the charging current, if the connection is reversed, the mos tube should be closed, but due to the existence of the body diode, the charging current can not be cut off.
1, the high temperature or poor performance of the switch tube causes the tube to explode, while damaging the rectifier tube and 3842. 2, the load short circuit, the protection circuit is not timely caused by the switch tube explosion, while damaging other components, 3, due to external electricityDamage caused by passing voltage, lightning strike, interference, etc.
2, the electric car charger tube is the charger output voltage is too high, caused by the voltage negative feedback circuit components damaged or variable value, the charger will short circuit no longer have current, the size of the secondary voltage and the size of the primary current, so it will not cause secondary voltage high.
3, short-circuit fault. According to the inquiry, serious short-circuit fault should be repaired the circuit related to the primary side of the switching power supply, the power tube is the most likely to be damaged, followed by the filter electrolytic capacitor, the protection diode of the power tube, the rectifier bridge and other components.
4, this is the safety resistor, it exploded indicates that there is a short circuit on the circuit board. Should first eliminate the short-circuit fault on the board, can not only replace the insurance resistor, only replace the insurance resistor it will explode.
5, overload. After pure sine wave load, the voltage of the CASF tube is too high, which exceeds the range of pure sine wave load, and the output overload protection failure will cause tube explosion. Pure sine wave inverter is a common inverter that can effectively convert direct current energy into alternating current power electronic devices.
6, the charger 38 series chip exploded to analyze the function of each pin, check against the chip list.Identify the model number. According to the query of relevant information chip explosion chip model is not clear, but you can know the number of pins, roughly judge. Then according to the surrounding circuit structure, analyze the function of each pin, check against the chip list.
Charge and discharge management chip can monitor the temperature of the battery, and when the temperature is too high, corresponding measures can be taken, such as reducing the charging current or stopping the charging, to protect the battery from overheating damage. Communication features some charging and dischargingThe electrical management chip also has a communication function, which can interact with the main control chip or external devices to achieve more intelligent management and control.
is different. The chip of 358 is dual op-amp, and the electric car charger chip 228 and 358 are not the same. In addition, electric vehicle charger Yingcore launched three power tool charging chips, respectively, Yingcore IP232 Yingcore IP236 Yingcore IP2368, can meet the fast charge needs of power tools from 15W to 100W.
is mainly responsible for measuring the remaining power and recording the number of cycles (data for diagnosis). inThere are three interfaces on the battery interface, respectively, the positive and negative terminals of the battery and the data interface, the positive and negative terminals supply power, the data interface is responsible for reporting the battery status to the phone, and the interface leads to the Apple customized TI charge management chip on the motherboard.
The power management chip can realize the power switch, regulation, monitoring and other functions, but also can realize fast charging, energy saving and other functions. Hunter Core offers various types of power management chips.