BQ3050: RESET Condition

bhupendra suthar

Part Number: BQ3050
Other Parts Discussed in Thread: GPCCEDV

Hello Team,

Looking solution for following queries :

1. Battery Pack RSOC was 10% before Reset , it becomes 0 after reset...why ? I changed Battery Mode register and to reflect its value , RESET Executed .

2. When should be use RESET command ? purpose..

3. Do I need to upload .senc file and Calibration values after RESET ?

Thanks,

over 3 years ago

0 Jose Couso over 3 years ago

TI__Mastermind 27321 points

Hello,

The bq3050 estimates the initial capacity of a battery pack at device reset, which is the case when battery cells are first attached to the application circuit. The initial Full Charge Capacity (FCC) is a direct copy of the data flash parameter Full Charge Capacity. The initial RM and RSOC are estimated using the open circuit voltage (OCV) characteristics of the programmed Li-ion chemistry (default ID0100), DOD at EDV2, and Qmax Pack. This gives a reasonably accurate RM and RSOC, however, battery capacity learning is required in order to find the accurate FCC, RM and RSOC. During battery capacity learning, Full Charge Capacity and DOD at EDV2 will be learned and updated.

Qmax is used for initial capacity (RM and RSOC) estimate in conjunction with the cell voltages and programmed chemistry information when device resets.

When should be use RESET command ? purpose..

One could be to return to SEALED mode.

Do I need to upload .senc file and Calibration values after RESET ?

No need to upload .senc file neither calibration after RESET.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

1. RESET does not return Battery into Sealed mode. I tried with the two battery BMS.

2. after RESET , RSOC is continuously showing 0% even after cell charge voltage is above 3.7V. don`t know why ?

3. RCA and FD bit is still on.

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello Bhupendra,

This gauges are not recommended to RESET frequently.

The reason why you might be seeing a 0% RSOC is because maybe an OCV measurement was taken at a high DOD point where Remaining Capacity might be close to zero or zero.

Would you please share your log file to better debug this issue?

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Hello Jose,

We are doing RESET , because we are not aware about for which parameter need to execute RESET Condition.....

Here , i am attaching .gg file FYR.

Pls. let us know , if you need anything else.... bQ3050-7Ah.zip

FYI:Here is my Battery (4S) Design requirement :

Max. Pack Charge Voltage : 16.4 ( Cell Voltage = 4100mV Max.) , EDV Fix method.

Max. Pack Discharge Voltage : 12.8 ( Cell Voltage = 3200mV max ) after that DSG MOSFET must be OFF to provide 0V pack output.

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello Bhupendra,

Would you please attach your log file (this file keeps record of battery status, flags, voltage, current, etc).

Regards,
Jose

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Pls. find attached one.

I See the Jump when Cell voltage discharge crosses to EDV2 Threshold....Should I reduce EDV2 threshold from 3500mV to 3300mV ?

Fullscreen 0207.DischargeNEWLogdata7A_with%.log Download

bq EVSW Version: 0.9.80 for bq3050 v0.02	
Device: bq3050 R0, FW version: V0_02_BLD0003
8/9/2022 3:46:36 PM	
           
Design Capacity: 6800 mAH
Design Voltage: 14400 mV
Specification Info: 0031 hex
Manufacture Date: 01-Jul-2022 
Serial number: 0001 
Manufacturer Name: SPARK 
Device Name: bq3050               
Device Chemistry: LION 

Sample	Stamp	~Elapsed(s)	ManufAccess	RemCapAlarm	RemTimeAlarm	BattMode	@Rate(@)	@TimeFull	@TimeEmpty	@RateOK	Temperature	Voltage	Current	AvgCurr	MaxErr	RSOC	ASOC	RemCap	FullChgCap	RunTimeEmpty	AvgTimeEmpty	AvgTimeFull	ChgCurr	ChgVolt	BattStat	CycleCnt	CellV4	CellV3	CellV2	CellV1	FETStatus	SafetyAlert	SafetyStat	PFAlert	PFStat	OpStat	ChgStat	TempRng	PendEDV	ManuFacStat
1	3:47:16 PM	0	0000	285	10	0081	0	65535	65535	1	30.55	16308	-2311	-858	100	100	102	6896	6900	179	433	65535	0	16800	00E0	1	4068	4095	4082	4060	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
2	3:47:56 PM	40	0000	285	10	0081	0	65535	65535	1	30.55	16244	-2309	-2148	100	100	102	6876	6900	179	192	65535	0	16800	00E0	1	4052	4079	4066	4045	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
3	3:48:36 PM	80	0000	285	10	0081	0	65535	65535	1	30.65	16188	-2303	-2302	100	100	101	6835	6900	178	178	65535	0	16800	00E0	1	4037	4064	4053	4032	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
4	3:49:16 PM	120	0000	285	10	0081	0	65535	65535	1	30.75	16169	-2302	-2302	100	99	101	6815	6900	178	178	65535	0	16800	00E0	1	4032	4059	4048	4028	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
5	3:49:56 PM	160	0000	285	10	0081	0	65535	65535	1	30.75	16153	-2300	-2300	100	99	100	6795	6900	177	177	65535	0	16800	00E0	1	4029	4056	4044	4024	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
6	3:50:36 PM	200	0000	285	10	0081	0	65535	65535	1	30.75	16141	-2299	-2299	100	99	100	6774	6900	177	177	65535	0	16800	00E0	1	4026	4052	4041	4021	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
7	3:51:16 PM	240	0000	285	10	0081	0	65535	65535	1	30.85	16118	-2295	-2295	100	98	100	6734	6900	176	176	65535	0	16800	00C0	1	4020	4047	4036	4016	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
8	3:51:56 PM	280	0000	285	10	0081	0	65535	65535	1	30.85	16108	-2294	-2294	100	98	99	6714	6900	176	176	65535	0	16800	00C0	1	4017	4044	4033	4013	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
9	3:52:36 PM	320	0000	285	10	0081	0	65535	65535	1	30.95	16099	-2292	-2293	100	98	99	6694	6900	175	175	65535	0	16800	00C0	1	4015	4042	4031	4011	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
10	3:53:16 PM	360	0000	285	10	0081	0	65535	65535	1	30.85	16089	-2291	-2292	100	97	99	6674	6900	175	175	65535	0	16800	00C0	1	4013	4039	4028	4009	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
11	3:53:56 PM	400	0000	285	10	0081	0	65535	65535	1	30.95	16074	-2289	-2290	100	97	98	6634	6900	174	174	65535	0	16800	00C0	1	4009	4035	4025	4005	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
12	3:54:36 PM	440	0000	285	10	0081	0	65535	65535	1	30.95	16067	-2289	-2289	100	96	98	6613	6900	173	173	65535	0	16800	00C0	1	4007	4033	4023	4003	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
13	3:55:16 PM	480	0000	285	10	0081	0	65535	65535	1	30.95	16060	-2288	-2288	100	96	97	6593	6900	173	173	65535	0	16800	00C0	1	4005	4031	4021	4002	0006	0000	0000	0000	0000	8044	0000	0008	14004	0000
14	3:55:56 PM	520	0000	285	10	0081	0	65535	65535	1	31.15	16045	-2285	-2285	100	95	97	6553	6900	172	172	65535	1400	16800	00C0	1	4002	4028	4017	3998	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
15	3:56:36 PM	560	0000	285	10	0081	0	65535	65535	1	31.15	16038	-2284	-2284	100	95	97	6533	6900	172	172	65535	1400	16800	00C0	1	4000	4026	4016	3996	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
16	3:57:16 PM	600	0000	285	10	0081	0	65535	65535	1	31.15	16033	-2284	-2283	100	95	96	6513	6900	171	171	65535	1400	16800	00C0	1	3999	4025	4014	3995	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
17	3:57:56 PM	640	0000	285	10	0081	0	65535	65535	1	31.15	16025	-2282	-2283	100	95	96	6493	6900	171	171	65535	1400	16800	00C0	1	3997	4023	4012	3993	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
18	3:58:36 PM	680	0000	285	10	0081	0	65535	65535	1	31.15	16013	-2281	-2281	100	94	95	6453	6900	170	170	65535	1400	16800	00C0	1	3994	4020	4009	3990	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
19	3:59:16 PM	720	0000	285	10	0081	0	65535	65535	1	31.25	16007	-2280	-2280	100	94	95	6432	6900	169	169	65535	1400	16800	00C0	1	3993	4018	4007	3988	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
20	3:59:56 PM	760	0000	285	10	0081	0	65535	65535	1	31.25	16001	-2279	-2280	100	93	95	6413	6900	169	169	65535	1400	16800	00C0	1	3991	4017	4006	3987	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
21	4:00:36 PM	800	0000	285	10	0081	0	65535	65535	1	31.25	15993	-2278	-2279	100	93	94	6392	6900	168	168	65535	1400	16800	00C0	1	3989	4015	4004	3985	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
22	4:01:16 PM	840	0000	285	10	0081	0	65535	65535	1	31.35	15980	-2277	-2277	100	93	94	6353	6900	167	167	65535	1400	16800	00C0	1	3986	4012	4001	3981	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
23	4:01:56 PM	880																																							Possible Error-See error log
24	4:02:36 PM	920																																							Possible Error-See error log
25	4:03:16 PM	960																																							Possible Error-See error log
26	4:03:56 PM	1000																																							Possible Error-See error log
27	4:04:36 PM	1040																																							Possible Error-See error log
28	4:05:16 PM	1080																																							Possible Error-See error log
29	4:05:56 PM	1120	0000	285	10	0081	0	65535	65535	1	31.45	16016	-2276	-2023	100	92	93	6314	6900	166	186	65535	1400	16800	00C0	1	3995	4020	4010	3990	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
30	4:06:36 PM	1160	0000	285	10	0081	0	65535	65535	1	31.55	15989	-2274	-2247	100	92	93	6294	6900	166	168	65535	1400	16800	00C0	1	3988	4014	4003	3983	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
31	4:07:16 PM	1200	0000	285	10	0081	0	65535	65535	1	31.55	15972	-2273	-2271	100	91	93	6274	6900	166	166	65535	1400	16800	00C0	1	3984	4010	3999	3979	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
32	4:07:56 PM	1240	0000	285	10	0081	0	65535	65535	1	31.55	15961	-2271	-2272	100	91	92	6254	6900	165	165	65535	1400	16800	00C0	1	3982	4007	3996	3976	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
33	4:08:36 PM	1280	0000	285	10	0081	0	65535	65535	1	31.65	15939	-2270	-2270	100	91	92	6214	6900	164	164	65535	1400	16800	00C0	1	3977	4002	3990	3970	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
34	4:09:16 PM	1320	0000	285	10	0081	0	65535	65535	1	31.65	15930	-2269	-2269	100	90	92	6195	6900	164	164	65535	1400	16800	00C0	1	3974	3999	3988	3968	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
35	4:09:56 PM	1360	0000	285	10	0081	0	65535	65535	1	31.65	15920	-2268	-2268	100	90	91	6174	6900	163	163	65535	1400	16800	00C0	1	3972	3997	3986	3965	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
36	4:10:36 PM	1400	0000	285	10	0081	0	65535	65535	1	31.65	15911	-2266	-2267	100	90	91	6154	6900	163	163	65535	1400	16800	00C0	1	3970	3995	3983	3963	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
37	4:11:16 PM	1440	0000	285	10	0081	0	65535	65535	1	31.65	15891	-2264	-2264	100	89	90	6115	6900	162	162	65535	1400	16800	00C0	1	3966	3990	3978	3958	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
38	4:11:56 PM	1480	0000	285	10	0081	0	65535	65535	1	31.65	15881	-2262	-2263	100	89	90	6095	6900	162	162	65535	1400	16800	00C0	1	3963	3988	3975	3955	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
39	4:12:36 PM	1520	0000	285	10	0081	0	65535	65535	1	31.65	15871	-2261	-2262	100	89	90	6074	6900	161	161	65535	1400	16800	00C0	1	3961	3985	3973	3952	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
40	4:13:16 PM	1560	0000	285	10	0081	0	65535	65535	1	31.65	15859	-2259	-2260	100	88	90	6055	6900	161	161	65535	1400	16800	00C0	1	3958	3982	3970	3949	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
41	4:13:56 PM	1600	0000	285	10	0081	0	65535	65535	1	31.65	15838	-2256	-2257	100	88	89	6015	6900	160	160	65535	1400	16800	00C0	1	3953	3977	3965	3944	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
42	4:14:36 PM	1640	0000	285	10	0081	0	65535	65535	1	31.75	15825	-2254	-2255	100	87	89	5995	6900	160	160	65535	1400	16800	00C0	1	3950	3973	3961	3941	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
43	4:15:16 PM	1680	0000	285	10	0081	0	65535	65535	1	31.75	15816	-2253	-2254	100	87	88	5975	6900	159	159	65535	1400	16800	00C0	1	3948	3971	3959	3938	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
44	4:15:57 PM	1721	0000	285	10	0081	0	65535	65535	1	31.75	15803	-2252	-2252	100	87	88	5956	6900	159	159	65535	1400	16800	00C0	1	3945	3967	3955	3935	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
45	4:16:37 PM	1761	0000	285	10	0081	0	65535	65535	1	31.75	15778	-2248	-2249	100	86	88	5917	6900	158	158	65535	1400	16800	00C0	1	3939	3962	3949	3928	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
46	4:17:17 PM	1801	0000	285	10	0081	0	65535	65535	1	31.75	15765	-2246	-2247	100	86	87	5897	6900	158	157	65535	1400	16800	00C0	1	3936	3958	3946	3925	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
47	4:17:57 PM	1841	0000	285	10	0081	0	65535	65535	1	31.85	15753	-2245	-2245	100	86	87	5877	6900	157	157	65535	1400	16800	00C0	1	3933	3955	3943	3922	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
48	4:18:37 PM	1881	0000	285	10	0081	0	65535	65535	1	31.85	15740	-2243	-2244	100	85	87	5857	6900	157	157	65535	1400	16800	00C0	1	3930	3952	3940	3918	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
49	4:19:17 PM	1921	0000	285	10	0081	0	65535	65535	1	31.85	15715	-2240	-2240	100	85	86	5818	6900	156	156	65535	1400	16800	00C0	1	3924	3946	3933	3911	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
50	4:19:57 PM	1961	0000	285	10	0081	0	65535	65535	1	31.85	15702	-2238	-2239	100	85	86	5799	6900	155	155	65535	1400	16800	00C0	1	3921	3943	3930	3908	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
51	4:20:37 PM	2001	0000	285	10	0081	0	65535	65535	1	31.85	15688	-2235	-2236	100	84	85	5779	6900	155	155	65535	1400	16800	00C0	1	3917	3939	3927	3905	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
52	4:21:17 PM	2041	0000	285	10	0081	0	65535	65535	1	31.95	15661	-2232	-2233	100	84	85	5740	6900	154	154	65535	1400	16800	00C0	1	3911	3933	3920	3898	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
53	4:21:57 PM	2081	0000	285	10	0081	0	65535	65535	1	31.95	15648	-2230	-2231	100	83	85	5721	6900	154	154	65535	1400	16800	00C0	1	3907	3929	3916	3895	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
54	4:22:37 PM	2121	0000	285	10	0081	0	65535	65535	1	31.95	15634	-2228	-2229	100	83	84	5701	6900	154	153	65535	1400	16800	00C0	1	3904	3926	3913	3891	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
55	4:23:17 PM	2161	0000	285	10	0081	0	65535	65535	1	31.95	15621	-2226	-2227	100	83	84	5682	6900	153	153	65535	1400	16800	00C0	1	3901	3922	3909	3888	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
56	4:23:57 PM	2201	0000	285	10	0081	0	65535	65535	1	32.05	15594	-2222	-2223	100	82	83	5643	6900	152	152	65535	1400	16800	00C0	1	3894	3916	3903	3881	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
57	4:24:37 PM	2241	0000	285	10	0081	0	65535	65535	1	32.05	15580	-2220	-2221	100	82	83	5623	6900	152	152	65535	1400	16800	00C0	1	3891	3912	3899	3878	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
58	4:25:17 PM	2281	0000	285	10	0081	0	65535	65535	1	32.05	15566	-2218	-2219	100	82	83	5604	6900	152	152	65535	1400	16800	00C0	1	3887	3909	3896	3874	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
59	4:25:57 PM	2321	0000	285	10	0081	0	65535	65535	1	32.05	15554	-2216	-2217	100	81	83	5585	6900	151	151	65535	1400	16800	00C0	1	3884	3906	3893	3871	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
60	4:26:37 PM	2361	0000	285	10	0081	0	65535	65535	1	32.05	15526	-2213	-2214	100	81	82	5546	6900	150	150	65535	1400	16800	00C0	1	3877	3899	3886	3864	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
61	4:27:17 PM	2401	0000	285	10	0081	0	65535	65535	1	32.05	15514	-2211	-2212	100	81	82	5527	6900	150	150	65535	1400	16800	00C0	1	3874	3896	3883	3862	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
62	4:27:57 PM	2441	0000	285	10	0081	0	65535	65535	1	32.15	15502	-2209	-2210	100	80	81	5507	6900	150	150	65535	1400	16800	00C0	1	3871	3893	3880	3858	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
63	4:28:37 PM	2481	0000	285	10	0081	0	65535	65535	1	32.15	15490	-2208	-2208	100	80	81	5488	6900	149	149	65535	1400	16800	00C0	1	3868	3889	3877	3855	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
64	4:29:17 PM	2521	0000	285	10	0081	0	65535	65535	1	32.15	15465	-2204	-2205	100	79	81	5450	6900	148	148	65535	1400	16800	00C0	1	3862	3883	3871	3849	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
65	4:29:57 PM	2561	0000	285	10	0081	0	65535	65535	1	32.15	15452	-2203	-2203	100	79	80	5430	6900	148	148	65535	1400	16800	00C0	1	3858	3880	3867	3846	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
66	4:30:37 PM	2601	0000	285	10	0081	0	65535	65535	1	32.25	15441	-2200	-2201	100	79	80	5411	6900	148	148	65535	1400	16800	00C0	1	3856	3877	3864	3843	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
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111	5:00:37 PM	4401	0000	285	10	0081	0	65535	65535	1	32.75	14887	-2123	-2124	100	63	64	4333	6900	122	122	65535	1400	16800	00C0	1	3719	3737	3726	3705	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
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120	5:06:37 PM	4761	0000	285	10	0081	0	65535	65535	1	32.75	14755	-2104	-2105	100	60	61	4109	6900	117	117	65535	1400	16800	00C0	1	3686	3705	3692	3672	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
121	5:07:17 PM	4801	0000	285	10	0081	0	65535	65535	1	32.75	14745	-2103	-2103	100	60	61	4091	6900	117	117	65535	1400	16800	00C0	1	3684	3702	3689	3669	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
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123	5:08:37 PM	4881	0000	285	10	0081	0	65535	65535	1	32.75	14723	-2099	-2100	100	59	60	4054	6900	116	116	65535	1400	16800	00C0	1	3678	3697	3684	3664	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
124	5:09:17 PM	4921	0000	285	10	0081	0	65535	65535	1	32.75	14700	-2096	-2097	100	59	60	4017	6900	115	115	65535	1400	16800	00C0	1	3673	3691	3678	3658	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
125	5:09:57 PM	4961	0000	285	10	0081	0	65535	65535	1	32.75	14689	-2094	-2095	100	58	59	3999	6900	115	115	65535	1400	16800	00C0	1	3670	3689	3675	3655	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
126	5:10:37 PM	5001	0000	285	10	0081	0	65535	65535	1	32.65	14678	-2093	-2093	100	58	59	3980	6900	114	114	65535	1400	16800	00C0	1	3667	3686	3672	3652	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
127	5:11:17 PM	5041	0000	285	10	0081	0	65535	65535	1	32.65	14666	-2091	-2092	100	58	59	3962	6900	114	114	65535	1400	16800	00C0	1	3664	3683	3669	3650	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
128	5:11:57 PM	5081	0000	285	10	0081	0	65535	65535	1	32.65	14643	-2087	-2088	100	57	58	3925	6900	113	113	65535	1400	16800	00C0	1	3658	3677	3664	3644	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
129	5:12:37 PM	5121	0000	285	10	0081	0	65535	65535	1	32.65	14632	-2086	-2087	100	57	58	3907	6900	112	112	65535	1400	16800	00C0	1	3656	3674	3661	3641	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
130	5:13:17 PM	5161	0000	285	10	0081	0	65535	65535	1	32.65	14622	-2084	-2085	100	57	58	3888	6900	112	112	65535	1400	16800	00C0	1	3653	3672	3658	3639	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
131	5:13:57 PM	5201	0000	285	10	0081	0	65535	65535	1	32.65	14610	-2083	-2084	100	57	57	3870	6900	111	111	65535	1400	16800	00C0	1	3650	3669	3655	3636	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
132	5:14:37 PM	5241	0000	285	10	0081	0	65535	65535	1	32.65	14588	-2079	-2080	100	56	57	3833	6900	111	111	65535	1400	16800	00C0	1	3645	3663	3650	3630	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
133	5:15:17 PM	5281	0000	285	10	0081	0	65535	65535	1	32.55	14578	-2078	-2079	100	56	57	3815	6900	110	110	65535	1400	16800	00C0	1	3642	3660	3647	3628	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
134	5:15:57 PM	5321	0000	285	10	0081	0	65535	65535	1	32.55	14566	-2076	-2077	100	56	56	3797	6900	110	110	65535	1400	16800	00C0	1	3639	3658	3644	3625	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
135	5:16:37 PM	5361	0000	285	10	0081	0	65535	65535	1	32.55	14555	-2075	-2076	100	55	56	3779	6900	109	109	65535	1400	16800	00C0	1	3636	3655	3642	3622	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
136	5:17:17 PM	5401	0000	285	10	0081	0	65535	65535	1	32.55	14534	-2071	-2072	100	55	56	3742	6900	108	108	65535	1400	16800	00C0	1	3631	3650	3636	3617	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
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138	5:18:37 PM	5481	0000	285	10	0081	0	65535	65535	1	32.55	14512	-2068	-2069	100	54	55	3705	6900	107	107	65535	1400	16800	00C0	1	3625	3644	3631	3612	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
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166	5:37:17 PM	6601	0000	285	10	0081	0	65535	65535	1	32.25	14186	-2020	-2021	100	45	46	3061	6900	91	91	65535	1400	16800	00C0	1	3543	3562	3550	3531	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
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168	5:38:37 PM	6681	0000	285	10	0081	0	65535	65535	1	32.25	14170	-2019	-2019	100	44	45	3026	6900	90	90	65535	1400	16800	00C0	1	3539	3558	3546	3527	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
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170	5:39:57 PM	6761	0000	285	10	0081	0	65535	65535	1	32.15	14147	-2015	-2016	100	44	44	2973	6900	89	88	65535	1400	16800	00C0	1	3533	3552	3540	3522	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
171	5:40:37 PM	6801	0000	285	10	0081	0	65535	65535	1	32.15	14138	-2014	-2015	100	43	44	2955	6900	88	88	65535	1400	16800	00C0	1	3531	3550	3538	3519	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
172	5:41:17 PM	6841	0000	285	10	0081	0	65535	65535	1	32.15	14130	-2012	-2013	100	43	44	2938	6900	88	88	65535	1400	16800	00C0	1	3529	3548	3536	3517	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
173	5:41:57 PM	6881	0000	285	10	0081	0	65535	65535	1	32.15	14122	-2011	-2012	100	43	43	2920	6900	87	87	65535	1400	16800	00C0	1	3527	3545	3534	3516	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
174	5:42:37 PM	6921	0000	285	10	0081	0	65535	65535	1	32.15	14106	-2009	-2010	100	42	43	2885	6900	86	86	65535	1400	16800	00C0	1	3523	3541	3530	3512	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
175	5:43:17 PM	6961	0000	285	10	0081	0	65535	65535	1	32.15	14098	-2009	-2009	100	42	43	2867	6900	86	86	65535	1400	16800	00C0	1	3521	3539	3528	3510	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
176	5:43:57 PM	7001	0000	285	10	0081	0	65535	65535	1	32.15	14090	-2007	-2007	100	42	42	2850	6900	85	85	65535	1400	16800	00C0	1	3519	3537	3526	3508	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
177	5:44:37 PM	7041	0000	285	10	0081	0	65535	65535	1	32.15	14075	-2005	-2005	100	41	42	2815	6900	84	84	65535	1400	16800	00C0	1	3515	3534	3522	3504	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
178	5:45:17 PM	7081	0000	285	10	0081	0	65535	65535	1	32.15	14067	-2004	-2004	100	41	42	2797	6900	84	84	65535	1400	16800	00C0	1	3513	3532	3520	3502	0006	0000	0000	0000	0000	8044	0200	0008	14004	0000
179	5:45:57 PM	7121	0000	285	10	0081	0	65535	65535	1	32.15	14059	-2003	-2003	8	8	7	435	6132	13	13	65535	1400	16800	00C0	1	3511	3530	3518	3500	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
180	5:46:37 PM	7161	0000	285	10	0081	0	65535	65535	1	32.15	14051	-2002	-2002	8	7	7	417	6132	12	12	65535	1400	16800	00C0	1	3509	3528	3516	3498	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
181	5:47:17 PM	7201	0000	285	10	0081	0	65535	65535	1	32.25	14036	-1999	-1999	8	7	6	382	6132	11	11	65535	1400	16800	00C0	1	3506	3524	3512	3494	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
182	5:47:57 PM	7241	0000	285	10	0081	0	65535	65535	1	32.15	14028	-1996	-1997	8	6	6	365	6132	11	11	65535	1400	16800	08C0	1	3504	3522	3510	3492	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
183	5:48:37 PM	7281	0000	285	10	0081	0	65535	65535	1	32.25	14019	-1995	-1996	8	6	6	348	6132	10	10	65535	1400	16800	08C0	1	3501	3520	3508	3490	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
184	5:49:17 PM	7321	0000	285	10	0081	0	65535	65535	1	32.25	14012	-1994	-1994	8	6	5	330	6132	10	10	65535	1400	16800	08C0	1	3500	3518	3506	3488	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
185	5:49:57 PM	7361	0000	285	10	0081	0	65535	65535	1	32.15	13995	-1992	-1992	8	5	5	295	6132	9	9	65535	1400	16800	09C0	1	3495	3514	3502	3484	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
186	5:50:37 PM	7401	0000	285	10	0081	0	65535	65535	1	32.25	13987	-1991	-1991	8	5	5	278	6132	8	8	65535	1400	16800	0BC0	1	3494	3512	3500	3481	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
187	5:51:17 PM	7441	0000	285	10	0081	0	65535	65535	1	32.25	13977	-1989	-1990	8	5	4	260	6132	8	8	65535	1400	16800	0BC0	1	3491	3509	3498	3479	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
188	5:51:57 PM	7481	0000	285	10	0081	0	65535	65535	1	32.25	13969	-1988	-1988	8	4	4	243	6132	7	7	65535	1400	16800	0BC0	1	3489	3508	3495	3477	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
189	5:52:37 PM	7521	0000	285	10	0081	0	65535	65535	1	32.25	13953	-1986	-1986	8	4	4	208	6132	6	6	65535	1400	16800	0BC0	1	3485	3503	3491	3473	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
190	5:53:17 PM	7561	0000	285	10	0081	0	65535	65535	1	32.35	13944	-1984	-1985	8	4	3	191	6132	6	6	65535	1400	16800	0BC0	1	3483	3501	3489	3471	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
191	5:53:57 PM	7601	0000	285	10	0081	0	65535	65535	1	32.45	13935	-1983	-1984	8	3	3	174	6132	5	5	65535	1400	16800	0BC0	1	3481	3499	3487	3468	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
192	5:54:37 PM	7641	0000	285	10	0081	0	65535	65535	1	32.45	13918	-1981	-1981	8	3	3	139	6132	4	4	65535	1400	16800	0BC0	1	3477	3495	3482	3464	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
193	5:55:17 PM	7681	0000	285	10	0081	0	65535	65535	1	32.45	13910	-1980	-1980	8	2	2	121	6132	4	4	65535	1400	16800	0BD0	1	3475	3492	3480	3462	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
194	5:55:57 PM	7721	0000	285	10	0081	0	65535	65535	1	32.45	13900	-1978	-1979	8	2	2	104	6132	3	3	65535	1400	16800	0BD0	1	3473	3490	3478	3459	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
195	5:56:37 PM	7761	0000	285	10	0081	0	65535	65535	1	32.45	13890	-1976	-1977	8	2	2	87	6132	3	3	65535	1400	16800	0BD0	1	3470	3488	3475	3457	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
196	5:57:17 PM	7801	0000	285	10	0081	0	65535	65535	1	32.45	13872	-1974	-1974	8	1	1	53	6132	2	2	65535	1400	16800	0BD0	1	3466	3483	3471	3452	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
197	5:57:57 PM	7841	0000	285	10	0081	0	65535	65535	1	32.55	13861	-1972	-1973	8	1	1	35	6132	1	1	65535	1400	16800	0BD0	1	3463	3481	3468	3449	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
198	5:58:37 PM	7881	0000	285	10	0081	0	65535	65535	1	32.55	13852	-1971	-1972	8	1	1	18	6132	1	1	65535	1400	16800	0BD0	1	3461	3478	3466	3447	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000
199	5:59:17 PM	7921	0000	285	10	0081	0	65535	65535	0	32.55	13841	-1970	-1970	8	1	1	1	6132	0	0	65535	1400	16800	0BD0	1	3458	3476	3463	3444	0006	0000	0000	0000	0000	8048	0200	0008	13540	0000

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello,

Yes indeed, the jump is observed when voltage discharge crosses to EDV2 threshold. I would reduce EDV2 threshold for quick observation.

How did you obtain EDV2, EDV1, and EDV0? You mentioned you were using fix method. I'm just curious how you calculated the fix EDV points.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

We have derived this values from our old smart batteries for same Cell . GPCEVD not used here.

Also from this: (TRM 1.4.4)

Would reducing EDV2 to 3300mV solve the purpose ?

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Do you have a good IVT data that shows a full discharge? I can derive the EDV points for you if you have it. From the log file you provided, the current does not seem to be constant.

Would reducing EDV2 to 3300mV solve the purpose ?

Reducing EDV2 will definitely cause the RSOC not to jump at that point, but I can't guarantee it will not jump later. To be sure about this, EDV2 is recommended to be 7% of RSOC. This value can be calculated with a good IVT data that shows a constant current discharge.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Thanks Jose,

Since the Load is FIX Resistor (7.5E) , Load current reduces as the voltage reduces from 16.8V to 14.4V gradually ( Ohm`s law). Hence not constant.

BTW, IVT data means ? I am not having electronic load for CC/CV.

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Sorry for not clarifying, IVT stands for Current Voltage Temperature, which is the data our gauges uses to predict RSOC, RM, FCC, etc.

Since you are using a resistive load, it'll be hard for me to coulomb count during a discharge. So I would recommend reducing EDV2 to a reasonable value that falls under your application. You can try this and see the predicted RSOC.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Ok, Will Try by reducing EDV2.

Do i have to RESET after EDV2 Value change ?

Meantime , Can you refer me any vendor / Model number to record IVT data ? appreciate if any cost effective OR DIY approach...

Thanks

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

No need to RESET after EDV2 value change, just make sure you write to Data Flash after you change the value.

Right now I am working from home for personal problems, but I will get back to you on your second question.

Regards,
Jose Couso

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Regarding your second question, are you asking if there's a company to get IVT data? Most of the customers get the IVT data themselves.

If I were working in person, I would ask for the battery you are using, then run a relax discharge relax on the battery. If this is not a rush, I could do this next week in our labs.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Hello Jose,

I am asking for kind of instruments and its model number which can be used to get IVT Data.

I have now updated Fixed EDV values as follow , I will update you after test.

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello Bhupendra,

You should use the gauge EVM to collect the data. If you have a maccor or Arbin machine, you can also use that.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Thanks Jose,

Appreciate if you can suggest any model number from same used in your Lab...

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello Bhupendra,

This is restricted information and we do not provide or advise customers what to buy on products outside of Texas Instruments.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Ohk.

You have my .gg file for all my parameters ( sent before)

Do you see any discrepancy in parameters considering my design requirement ? I was wondering about design voltage value in SBS Config.

My Battery (4S) Design requirement :

Max. Pack Charge Voltage : 16.4 ( Cell Voltage = 4100mV Max.) , EDV Fix method.

Max. Pack Discharge Voltage : 12.8 ( Cell Voltage = 3200mV max ) after that DSG MOSFET must be OFF to provide 0V pack output.

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello Bhupendra,

I do not see any discrepancy in your design.

Usually customers will just follow the GPCCEDV guide to find the compensation values for EDV Discharge Rate and Temperature. But, I see you are using EDV fix method, is there a specific reason you want to use EDV fix method?

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

For GPCCEDV , IVT data is required using specific precision instrument ( Correct me if i m wrong ) . we don`t have that at present.

Hence we choose to go with fix EDV method and run multiple charge - discharge cycle.

-Thanks

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello Bhupendra,

As long as it is at room temperature and you have done your own testing, EDV fix method should be fine (customer should test it and make sure it's working as expected).

For GPCCEDV , IVT data is required using specific precision instrument ( Correct me if i m wrong )
You are correct, IVT data is required for GPCEDV.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Thanks Jose,

One thing like to know is : if i want to charge battery RSOC = 100% @ 16.4V Battery Pack ( i..e Each cell voltage charge upto 4100mV ) do i need to set Design voltage parameter (SBS Config) to 16.4V instead of 16.8V ?

If yes then , does any other parameter to change to achieve so ?

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello Bhupendra,

Correct, design voltage (0x19) should be set to the desired max voltage in order for the gauge to detect a full charge.

Also, please refer to section 1.5.6 Primary Charge Termination. You can also monitor [FC] flag, when set it means full charge has been reached. FC bit is at BatteryStatus register.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Does same thing applies to full discharge as well ?

Because FD sets before EDV0 threshold is achieved....At present i am monitoring Cell voltage for charge and Discharge cycle as per our requirement.

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello,

Are you setting EDV0 equal to your terminate voltage?

Also, here's a good guide for fixed EDV method.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/737790/bq78350-r1-how-to-set-fixed-edv0-1-2?tisearch=e2e-sitesearch&keymatch=EDV0#

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

terminate voltage ? Are you referring to CUV ?

In Our case , CUV = 3190mV , EDV0= 3200mV.

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Yes, CUV

In a cell undervoltage condition, Check for TDA and FD flags they should be set. Also, DSG FET should be off, and CUV flag in safety status should be set.

If one of your cells meet this criteria, then FD will be set.

Regards,
Jose Couso

0 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

Ok Jose,

if i want to charge battery RSOC = 100% @ 16.4V Battery Pack ( i..e Each cell voltage charge upto 4100mV ) what are the parameter i need to consider from following , correct me if i am missing any parameter :

1. Set Design Voltage (0x19) = 16400mV

2. Keep Charging Voltage = 16500mV

0 Jose Couso over 3 years ago in reply to bhupendra suthar

TI__Mastermind 27321 points

Hello Bhupendra,

Also check design capacity, should be stated in cell manufacturer datasheet.

Also check section 1.5.6 Primary Charge Termination in TRM.

This thread is heading in a different direction than the initially topic stated, please open a new thread if the question is different from the topic. These threads also serve the purpose of helping other customers who have the same questions.

Regards,
Jose Couso

+1 bhupendra suthar over 3 years ago in reply to Jose Couso

Intellectual 515 points

OK Thanks

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