Three series lithium battery charging and discharging board, 5V2A input and output

2023-05-12 14:57:27
lu
Original
200

1 Circuit board PCB description

1.1  Name Three series lithium battery charging anddischarging board, 5V2A input and 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): 5V2AWhen 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  OutputUSB2): 5V2.4A (Maximum 3A)

1.6  Introduction to Chip  Functions

1, B lithium battery charging circuit PW4053

PW4053 is  alithium battery charging management chip, built-in MOS, up to output 12.6V 1Acharging, support 5V input boost three series lithium battery charging.      

2, A lithium battery protection circuit PW7126

PW7126 is a three  series lithium battery overcharge, overdischarge, overcurrent detection  protection circuit chip, parallel MOS can increase the overcurrent protectionvalue.

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.

4, Lithium batterypower equalization circuit PW2213

PW2213 is a lithium battery power equalization circuitchip. Multi-string lithium battery and multi-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 6 PIN and PW4053 3 PIN) is not only the power output,but also it is a noise source, the layout should be wide and  the 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, C6, C7, C14

4

0805 25V 10UF

C2

1

0805 25V  10UF

C3

1

0603 1UF  25V

C4, C12

2

0603 0.1UF  25V

C5, C13

2

0603 0.1UF  50V

C8, C9

2

0805 16V  22UF

C10, C11

2

SS34  SMB

D1

1

Integrated molded inductor 0850-6.8UH

L1

1

Integrated molded inductor 0850- 3.3UH

L2

1

0603 LED Green

LED1

1

PW7126 PWCHIP Lithium battery protection board IC

PW7126

1

PW4406 PWCHIP

Q1, Q2

2

NC

R1, R2(NTC), R11

3

0603 10K 1%

R3

1

0603 330K 1%

R4

1

0603 100K 1%

R5

1

0603 1.2K  1%

R6, R14, R15

3

0603 5.1K 1%

R7, R8

2

0603 1K 5%

R9

1

0603 3M 1%

R10

1

0603 200K 1%

R12

1

0603 26K 1%

R13

1

1210 25mR 1%

R16

1

PW4053 PWCHIP

U1

1

PW2163B PWCHIP

U2

1

PL515 USB Intelligent charging protocol

U4

1

USB TYPE C6PIN

USB1

1

USB A

USB2

1

Note: The BOM for LDO and equalization circuits are not included.

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