The charge and discharge management chip can monitor the voltage and current of the battery. When the battery voltage is too low or the current is too large, the discharge circuit can be cut off in time to avoid damage caused by overdischarge of the battery. The charge and discharge management chip can monitor the temperature of the batteryWhen 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.
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.
Charge management chip: charges and protects the battery to avoid overcharge and overdischarge. Display screen:Display e-cigarette status information, such as temperature, power, electricity, etc. Heating coils: used to convert electrical energy into heat to produce smoke. Temperature sensor: used to measure the temperature of the heated part of the e-cigarette to ensure the appropriate heating temperature. Capacitors, resistors, inductors, etc. : used to regulate the electronic cigarette circuit to ensure that the circuit works stably.
Specifically, the lithium battery charging chip generally contains multiple pins, which each have different functions, such as charging current control, battery voltage detection, temperature detection, and so on. Among them, several common pin functions are as follows: VIN: input voltage pin, usually connected to chargeColumn belongs to the low-end 32-bit ARM microcontroller, this series of chips is produced by ST company, its core is Cortex-M3. The series of chips can be divided into three categories according to the size of the on-chip Flash: small capacity (16K and 32K), medium capacity (64K and 128K), and large capacity (256K, 384K and 512K).
3, charging can use TP405 TP4057 USB to power the MCU can use LMS1585, but your lithium battery to power the MCU is more troublesome, because the lithium battery is fully charged for 2V, electricityWhen the amount is low, it can be 7V so that it can not directly supply power to the MCU, but the general buck IC can not work under such a low voltage difference. It is recommended to use LM2577 to boost the voltage before using LMS1585 to buck the MCU. Call me if you need the circuit.
4, the use of lithium battery output stable 3V voltage, you can choose a BL8505-3 chip. BL8505-3 is a DC-DC conversion circuit with BOOST structure and voltage type PFM control mode. Externally, all you need is an inductor, an output capacitor, and a Schottky diodeCan provide a stable low noise output voltage of 3V.
5, it is recommended that you use MC34063 chip, I have been using it to power 5V MCU. The device itself contains a single chip control circuit for the main functions required by the DC/DC converter and is inexpensive. It consists of a reference voltage generator with automatic temperature compensation, a comparator, an oscillator with controlled duty cycle, an R-S flip-flop and a high-current output switching circuit.
2, control the charging curve Lithium battery charging chip is the key to control the charging curve, to ensure that the battery gets the most suitable charging voltage and current, thus extending the battery life. Multiple protection Lithium batteries provide more powerful protection featuresOver voltage, over current, discharge under voltage, over current and short circuit and other multiple protection to ensure battery safety.
3, there is no charge protection chip inside the lithium battery, generally increase the protection board on the outside, and there is a protection chip on the protection board. There is also one that is placed on the motherboard, that is, the end product directly controls the overcharge and overdischarge of the battery.
4, lithium battery charging chip is a current and voltage control for constant current and constant voltage, lithium battery protection chip is to protect the safety of the battery, that is, to prevent the battery from overcharging explosion and prevent the battery from being easily broken and designed, I hope to help you.
5To charge lithium batteries, you must use lithium battery management chips. The use of regulated power supply and so on can also be managed to charge the lithium battery process, do not have to use lithium battery management chip, for alternative circuits can use their own 555 and so on chip with hole plate or copper clad plate to build circuit.