Other Parts Discussed in Thread: EV2400
Tool/software:
Hello：
The customer is using bq34110 to count the battery power. The battery is 4 series and 6 parallel, but there is a problem. When the battery is in use, the power is 70%. At this time, the battery is turned off (MCU control, the control board is also powered off), and the battery power reading will jump to 82% when it is powered on again. Can you help analyze it?
If there is no power interruption, it is relatively accurate to use from 100% to 0%.
Below is the configuration and circuit diagram of bq34110, please help to take a look. Thanks!!!
The customer feels that the bq34110 fuel gauge cannot be powered off or reset while the battery is in use, otherwise the capacity read using the RemainingCapacity instruction will not match the capacity read before power off?
STF_REGS_T regs[] = {
{0x4000, 4, 0x80619ad8}, //0 CC Gain 增益
{0x4004, 4, 0x95005797}, //1 CC Delta 增量
{0x4008, 2, 0xf9ec}, //2 CC Offset 偏移
{0x400c, 1, 0x47}, //3 Board Offset
{0x400F, 1, 0x7}, //4 Pack V Offset
{0x4010, 2, 0x49ba}, //5 Voltage Divider 49ba=18874
{0x413d, 1, 0x10}, //6 Pin Control Config
{0x424B, 2, 0x1022}, //7 CEDV Gauging Configuration
{0x413a, 2, 0x0204}, //8 Operation Config A
{0x4155, 1, 0x4}, //9 串联数量
{0x41f5, 2, 22200}, //10 Design Capacity mAh 22200
{0x425a, 2, 0xBD7}, //11 Fixed EDV 0 3031
{0x425d, 2, 0xC1C}, //12 Fixed EDV 1 3100
{0x4260, 2, 0xCB2}, //13 Fixed EDV 2 3250
{0x40c0, 2, 21090}, //14 Learned Full Charge Capacity 22200 x 0.95
};
In addition, since the customer does not have an ev2300/ev2400 emulator, if possible, can you help evaluate the parameters of the following battery packs?
1. 4 series and 3 parallel, ternary lithium battery, single cell voltage 4.2v
2. 4 series and 6 parallel, ternary lithium battery, single cell voltage 4.2v
Attached is the battery specification sheet.