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Inquiries Regarding EIS Test and Evaluation Board Features

I have the following questions regarding the EIS test solution consisting of the EVBMA6x02BMU, EVBMA8420DT, and EVBMA7x18DT1 boards:
1. What is the supported EIS test frequency range?

2. In addition to traditional sweep testing methods, can the excitation current be customized, for example, to use multi-frequency composite excitation?

3. The user manual states that a single board can test 8 to 18 cells. If there are fewer than 8 cells, can the test still be completed?

4. Are there any specific requirements or standard specifications regarding how the evaluation board connects to the battery cell during actual use?

5. When the internal resistance of high-capacity battery cells is low, a higher excitation current is required. Is this controllable?

Re: EIS测试评估板功能咨询

1: 0.1 – 1 kHz

2: You can generate the excitation signal yourself

3: The BMA7418 supports a minimum of 8 cells.

4: This doesn't cover much of it; you can refer to UG10341, page 10.

5: For example, in the BMA8420 + TAA3033 EIS excitation scheme (as shown in Figure 8 of UG10341), the "magnitude" of the excitation current is not set directly by the BMA8420 alone, but is adjusted by the TAA3033;The sense resistor defines the amplitude of the excitation current.