Lithium battery charging chip is the key to controlling the charging curve Lithium battery voltage detection chip To ensure that the battery gets the most appropriate charging voltage and current of the lithium battery voltage detection chip , thereby extending the battery life. Multiple protection The lithium battery has more powerful protection, providing multiple protection such as overvoltage, overcurrent, discharge undervoltage, overcurrent and short circuit to ensure battery safety. As the guardian of the secondary protection circuit, the lithium protection chip can provide more stable protection for the battery under the premise of ensuring safety.
The lithium-ion battery protection board will automatically power off after the battery is full to avoid overcharging and ensure the safety of the battery. Overdischarge protection Lithium ion battery protectionThe board will shut down the battery when the voltage reaches the minimum requirement, preventing battery damage and extending battery life. Short-circuit protection The lithium-ion battery protection board will cut off the power in a few milliseconds to protect the battery safety and avoid the danger caused by internal short circuit.
In the context of modern energy transformation, CATL's new energy lithium battery production line is undoubtedly a leader in the field of battery manufacturing. The performance of the battery cell, the cornerstone of the battery, is determined by the careful design and ratio of positive and negative electrode materials. The first step is the precise mixing of the active material, which is directly related to the overall quality of the battery. The coating process plays a key roleColor, it ensures the thickness and weight consistency of the cell, eliminating potential safety hazards.
1, the single chip microcomputer and peripheral chips are generally CMOS, the power supply voltage adaptation range is very wide, you have what reason must be 3V work, say more details, there may be other solutions. And the voltage regulator is certainly not possible, the voltage regulator in front of the series to adjust the resistance, it is not as good as the low voltage difference regulator block.
2, the most efficientIt's DCDC. STM32F series belongs to the low-end 32-bit ARM microcontroller, the series chip 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 to 2V, it can be 7V when the power is low, so 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, 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 is compared with a reference voltage generator with automatic temperature compensationIt is composed of an oscillator with a controlled duty cycle, an R-S flip-flop and a high-current output switching circuit.
5, lithium ion battery nominal voltage 7V (6V), charging cut-off voltage 2V (1V, according to the battery brand has different designs).
6, PWM frequency, 5kHZ-50KHZ can be, inductance parameters, 50 uH-300uH, high frequency inductance is smaller, low frequency inductance is larger, the power is larger, the wire diameter of the inductor wire is thicker, capacitance, about 1000uf, the frequency can be high22005:5 series lithium battery protection chip introduction Is there? '> Siyang NB22005:5 series lithium battery protection chip introduction Is there?
Siyang NB22005 is a special protection chip for 5-string lithium batteries. The chip has a variety of protection functions, which can effectively protect the lithium battery from overcharge, overdischarge, short circuit, overcurrent and overtemperature problems, thereby extending the service life of the lithium battery, and improving the safety and reliability of the lithium battery.
1, the charge and discharge management chip can monitor the battery voltage and current, when the battery voltage is too low or the current is too large, it can cut off the discharge circuit in time to avoid damage caused by overdischarge of the battery. The 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.
2, What are the functions of IP2326 charge management chip? The IP2326 has input voltage limiting function, which can intelligently adjust the charging current and adapt the adapter load. The IP2326 is not supportedConnect pins to select whether to set up 2 or 3 strings of lithium battery charging.
3, the main function is: when the battery voltage rises to 4V, DW01 will think that the battery voltage is in the state of overcharge voltage, and immediately disconnect the output voltage of the third pin, so that the voltage of the third pin becomes 0V, and the switch is no voltage due to the fourth pin.
4, the mobile power chip refers to the chip used to control charging and discharge, mainly used in the circuit design of the mobile power supply. The functions of the mobile power chip include battery charging management, battery protection, transmission voltage regulation and so on. Mobile electricityThe main role of the source chip is to protect the safety of the battery and mobile power supply, so that they can run stably and improve the use experience. Mobile power chip is the core component of mobile power supply, which determines the performance and quality of mobile power supply.
LM1 represents an IC chip on the lithium battery protection board, where the LM represents National SemiconductorIn this company, 1 stands for chip model. The function of this chip is battery voltage detection and protection, and its built-in protection circuit can prevent overcharge, overdischarge, short circuit and other problems, so as to protect the safety and life of the lithium battery.
Lithium iron phosphate battery is a protection plate, but it is mostly used in series circuits, generally 3 strings of the protection plate. Charging precautions Charging must not rely on the action of the protection board, the general protection board over charge setting range is more than the normal use of the battery, the role of the protection board is only to prevent explosion ~ special charger lithium iron phosphate requires a special charger, but generally better lithiumThe pool charger will have a lithium iron phosphate transfer switch.
LM1, LM2 indicates block 1, block 2. For example, a large project has a scale of 10km, 1km a bid section, divided into ten bid sections, lm1, lm2... Ten sections will be constructed together. The principle of looking at pictures: first the school team plane, after proofreading components; According to the component type, the classification one by one; Look at the components first, then look at the nodes and connections. 1 Look at the relevant content in the structural design description.
The first type is numbered with 10, the second type is numbered with 11. LM12749/LM12710 Inch coneRoller bearing LM: indicates the working condition class code. Medium and light duty. 1: indicates the contact Angle code. Range: 0 degrees to 23 degrees, 59 minutes, 599 seconds. 27: Basic series number. Same size range as 81. 49: indicates the first inner ring in the 27 series. 10: indicates the first outer ring in the 27 series.
CN3063 is a single lithium battery charge management chip that can be powered by solar cells. Power is included within the deviceTransistors, when applied, do not require external current-detecting resistors and choke diodes.
LED driver chip: used to control the light source in LED lamps and displays, including constant current output control and dimming functions. LDO (Low Voltage Difference Linear Regulator) : Used to provide a stable low noise voltage output with low voltage difference requirements. Switching regulators: Use switching technology to achieve efficient voltage conversion, often more efficient than linear regulators. < / p > < p > common power management chip HIP630IS653RT923ADP316KA7500, TL494, etc. The following will detail the main types of power management chips, and illustrate four common power management chips. The main type of power management chip Voltage regulator: A voltage regulator is one of the most basic power management chips and is used to convert an input voltage into a stable output voltage.
The power metering chip is as follows: SA9904B The SA9904B has 20 pins, PDIP package, and 12 yuan registers. The SA9904B contains nine 24-bit registers representing the active, reactive and supply voltages of each phase. The 10th 24-bit register generationTable the frequency of any effective phase, including 3 addresses to preserve compatibility with SA9604A. Any one of the three addresses can be used to access the frequency register.