Three series lithium battery charging and discharging board, 5V-9V2A input and 5V output
- 2023-05-12 14:57:21
- lu Original
- 212
1 Circuit board PCB description：
1.1 Name ： Three series lithium battery charging anddischarging board, 5V-9V2A input and 5V output
1.2 Applications:Convenient charging devices, etc.
1.3 Battery pack: 11.1V lithium battery pack,multiple parallel or two series connection, full 12.6V
1.4 Input （ USB1）： 5V2A（ When charging, the light will be on, and when it is fully charged,the light will turn, and the light will flash without connecting the battery）
1.5 Input（ USB2）： 5V2.4A (Maximum 3A)
1.6 Introduction to Chip Functions：
1， B lithium battery charging circuit： PW4040
PW4040 is a wide voltage muti-lithium battery charging management chip, built-in MOS, up to output 3A charging, support 5V-9V input boost three series lithium battery charging.
2， A lithium battery protection circuit ： PW7126
PW7126 is a threeseries lithium battery overcharge, overdischarge, overcurrent detectionprotection circuit chip, parallel MOS can increase the overcurrent protection value.
3， Lithium batteryoutput circuit ： PW2163
PW2163 is a DC-DCbuck constant voltage chip, input 4.5V-18V, adjustable constant voltage outputvoltage value, output up to 3A or 5A current.
Extra ： Lithium battery power equalization circuit： PW2213
PW2213 is a lithium battery power equalization circuit chip. Multi-string lithium battery andmulti-parallel circuit are available.
2， Circuit diagram ：
PCB layout is divided into two parts: signal controlcircuit + power circuit
Note 1： The blue thick line is the power trace, the layout should be wide,； SW part (PW2163 PIN 6 and L1, D1, Q1 three devices connected) is not only the power output, but also it is a noise source, the layout should be wide andthe area should be small.
Note 2： The red thick line is the power ground, the main points of the drawing board: to be wide, the shorter the distance between the connecting loops at each point, the more holes are punched in the ground.
3， PCB diagram and 3Ddisplay diagram
4 ， BOM Material List .
|
Comment |
Designator |
Quantity |
|
0805 25V 22UF |
C1, C2, C6 |
3 |
|
0805 25V 22UF |
C3 |
1 |
|
0603 1UF 25V |
C4, C7, C12, C15 |
4 |
|
0603 0.1UF 25V |
C5, C13 |
2 |
|
0603 0.1UF 50V |
C8, C9 |
2 |
|
0805 16V 22UF |
C10, C11 |
2 |
|
100uF 25V 6.3MM Electrolytic capacitance |
C14 |
1 |
|
0603 10UF 25V |
C16 |
1 |
|
0603 560pF 25V |
C17 |
1 |
|
SS34 SMB |
D1 |
1 |
|
Integrated molded inductor 0850-15UH |
L1 |
1 |
|
Integrated molded inductor 0850- 3.3UH |
L2 |
1 |
|
0603 LED Red |
LED1 |
1 |
|
0603 LED Green |
LED2 |
1 |
|
MMBT3904 SOT523 |
P1, P2, P3 |
3 |
|
PW6206-3.3V |
PW6206, PW7533L |
2 |
|
PW6513B pin-5V |
PW6513B, PW7550 |
2 |
|
PW7126 PWCHIP Lithium battery protection board IC |
PW7126 |
1 |
|
PW4406 PWCHIP |
Q1, Q2, Q3 |
3 |
|
0603 1.9M 1% |
R1 |
1 |
|
0603 200k 1% |
R2 |
1 |
|
0603 22K 5% |
R3 |
1 |
|
0603 330K 1% |
R4 |
1 |
|
0603 100K 1% |
R5 |
1 |
|
0603 1K 1% |
R6, R14, R15 |
3 |
|
0603 220K 1% |
R7 |
1 |
|
0603 30K 1% |
R8 |
1 |
|
1210 68mΩ 1% |
R9 |
1 |
|
0603 1K 1% |
R10 |
1 |
|
0603 1K 5% |
R11 |
1 |
|
0603 40K 1% |
R12 |
1 |
|
0603 300K 1% |
R13 |
1 |
|
0603 22K 5% |
R16 |
1 |
|
0603 3M 1% |
R17 |
1 |
|
1210 30mR 1% |
R18 |
1 |
|
0603 1K 5% |
R19 |
1 |
|
PW4040 PWCHIP |
U1 |
1 |
|
PW6603 PWCHIP |
U3 |
1 |
|
PW2163B PWCHIP |
U4 |
1 |
|
PL515 Intelligent charging protocol |
U5 |
1 |
|
USB TYPE C 6PIN |
USB1 |
1 |
|
USB A |
USB2 |
1 |
Note: The BOM for LDO and equalization circuits are not included.
