Arduino BMS - BQ76930

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STD Arduino BMS - BQ76930

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Update time： 2022-02-16 12:19:28

Creation time： 2018-06-26 23:43:10

Description

WORK IN PROGRESS - NOT READY FOR MANUFACTURE Looking for collabortors to get this design ready for a a production build. Project to build a 7S 5P 18650 battery state monitoring system. Note: the BQ76930 is specifically configured for a 7 series pack. http://www.ti.com/lit/ds/symlink/bq76930.pdf Note Table 8-2. Cell Connections for 7S Pack Configuration bq76930 Thanks to scttnlsn for the headstart in this project.

Design Drawing

schematic diagram

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Cell Monitor V1.1
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Cell Monitor V1.2
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PCB

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PBC V1.1
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PBC V1.2
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PBC_V1.3
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	BQ76930	BQ1	TSSOP-30	1
2	JST 11P	CELLVOLTAGES	JST-XH-11-PACKAGE-LONG-PAD-2.5MMPITCH	1
3	1k	RC10,RC9,RC8,RC7,RC6,RC5B,RC5,RC4,RC3,RC2,RC1,RC0	0805	12
4	0.68u	CC10,CC9,CC8,CC7,CC6,CC5,CC4,CC3,CC2,CC1,CC0,CC11	1206	12
5	DTSM-62K-S-V-T/R(SN431)	BOOT	SW4-SMD-6.0X6.0X5.0MM	1
6	10k	RTS1,R1,R2	0603	3
7	100	RF1,RF2	0805	2
8	1N4148	D2,D3	DO-35	2
9	1u	C1,C2	1206	2
10	10u	CF1,CF2,C4,C5	1206	4
11	4.7u	C3	1206	1
12	1k	R3,R4	0603	2
13	1M	R11	0603	1
14	Female header1*2P	P1	HDR-2X1/2.0	1
15	Header-Female-2.54_1x2	P3,P4	HDR-1X2/2.54	2
16	Wemos D1 Mini	U1	WEMOS D1 MINI SHIELD LAYOUT	1
17	Header1x8	P2	HDR-8X1/2.54	1
18	Header 1x8	P5	HDR-8X1/2.54	1
19	HT75C0-2	U3	SOT-23-5	1
20	LM340SX-5.0	U2	TS3B	1