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2022-09-20 05:00:00
BQ2000T is a programmable multi -chemical fast charge management integrated circuit
Features
Safety management of rapid charging of nickel -cadmium, nickel -metal hydride or lithium -ion battery pack
Design
Pre -charging appraisal of short -circuit, damage or overheating batteries
Nickel chemistry for Δt/Δt fast charging, minimum current chemistry for lithium ions, maximum maximum maximum current, maximum maximum current Temperature and maximum charging timeoptional recharge mode to realize the maximum nickel -hydride battery
Maintenance after charging
built -in battery disassembly and insert detection
low power sleep mode
#8226 Multi -chemical charger
Nickel charger
high -power multi -battery charger
According to the chemical properties, BQ2000T provides a lot of charge termination standards:
temperature rise rate (Δt/Δt) (for nickel -cadmium and nickel -hydride)
minimum charging current (lithium ion)
maximum temperature
maximum charging time
For safety reasons, BQ2000T prohibits fast fast reasons for fast reasons. Charging until the battery voltage and temperature are within the range of user definition. If the battery voltage is lower than the low voltage threshold, the BQ2000T uses dripping charging to adjust the battery. For nickel -hydride batteries, the BQ2000T provides optional recharge and charging to maximize the battery capacity.
The integrated high -speed comparator makes BQ2000T the basis for the integrity of nickel -based and lithium -based chemistry and high -efficiency battery charger circuit.
Function description
BQ2000T is a multi -purpose, multi -chemical battery charging control device. The function box diagram is shown in Figure 1, and the status chart is shown in Figure 2.
Starting and charging qualifications
BQ2000T detected
power to vcc
replace the battery
123] Capacity loss (only lithium ions)
After starting, IC immediately enters the charging confirmation mode. BQ2000T charging identification is based on battery voltage and temperature. If the voltage on the BAT pin is lower than the internal threshold VLBAT, the BQ2000T enters the battery adjustment state. This situation shows that there may be defects or short circuits in the battery pack. In order to restore the completely exhausted battery pack, BQ2000T enables the MOD PIN to be charged at a rate per 1.0s. As described in section of top and pulse drip maintenance charging "