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Update time: 2018-10-09 00:05:50
Creation time: 2018-10-09 00:05:42
Description
Purpose: sequential connection of 6 18650 batteries. 2 modes of work. - 24 V Load to batteries: All batteries are getting in sequential circuit when connect signal is on (5V). - Charging: Connect signal is off. Charging Voltage 5-8 V is applied on P5. [TP4056][1] is used to charge/control the battery. On separate board LED will be used to show CHRG and STDBY status. [LTC4412][2] is used to connect 18-24 V output to load or another battery pack as following: ![enter image description here][3] Here is module sample for LTC4412 connection: ![enter image description here][4] [Mosfet][5] Relay [DS4E-S-DC5V][6] is used to connect disconnect battery (pair) to charge or to load. Consider to use charging input also as disconnect signal. For this we need also put on low CE input of TP4056 [1]: https://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/TP4056.pdf [2]: http://cds.linear.com/docs/en/datasheet/4412fb.pdf [3]: /editor/20180206/5a79352b49baa.png [4]: /editor/20180206/5a7955db33921.png [5]: https://www.mouser.com/ds/2/308/FQP30N06L-1120205.pdf [6]: https://www.mouser.com/ds/2/315/discon2009e_ds4-1075848.pdf
Design Drawing
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ID Name Designator Footprint Quantity
1 WJ2EDGVC-5.08-2P P7,P1,P2,P8,P3,P4,P5,P6 WJ2EDGVC-5.08-2P 8
2 0.4 R1 AXIAL-0.4 1
3 100uF C1,C3 RAD-709 2
4 TP4056 U4,U5,U6,U7,U8,U9 SOP-8_EP_150MIL 6
5 1.2K R2,R3,R4,R5,R6,R7,R11,R8 AXIAL-0.4 8
6 HDR-IDC-2.0-2X10P P10 HDR-IDC-2.0-2X10P 1
7 LTC4412ES6PBF U10 TSOT-23-6 1
8 FQP27P06 Q1 TO220V 1
9 DS4E-S-DC5V U1,U2,U3 DS4E-S-DC9V 3
10 100nF C2 CERAMIC-2.54 1
11 4.7K R9,R10 AXIAL-0.4 2
12 1N4001-E3/73 D1 DO-41 1
13 470K R12 AXIAL-0.4 1
14 Jumper JMP1,JMP2 JMP 2

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