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Impedance testboard

hb020·batterymeter·kicad/impedance_testboard/impedance_testboard.kicad_pcb

Top view of the Impedance testboard PCB
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Impedance testboard is an open source PCB design by hb020: a 2-layer, 99.1 × 69.9 mm board with 38 components (19 distinct parts). Filed under power & battery and test & measurement.

Handheld Battery AC and Time Domain characterization tool on Attiny series 2

This repository is about a "pen size" (handheld) tool for quick measurement of various types of battery resistances/impedances.

This tool uses 2 different methods for measuring impedance values:

- "standard" AC 1 kHz impedance, as used by many. - Direct Current Impedance Spectroscopy, extracting the bulk (solution) resistance and the SEI (Solid Electrolyte Interphase) resistance, allowing better insight in both battery ageing and battery safety. Normally this would require a lengthy procedure via EIS (Electrochemical Impedance Spectroscopy) and model fitting. This tool allows to do it fast…

Impedance testboard, from the project README
From the project README

Parts list

38 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
14
Conn_01x02_Male
J1, J2, J5, J6, J7, J8, J9, J10 +6
2
Conn_01x01_Female
J3, J4
1
T491A106M020AT
10uF
C1
1
CL10B105KO8NNNC
1uF
C2
1
CL10B104KO8NNNC
100nF
C3
3
CL10A475KO8NNNC
10000uF
C4, C5, C15
2
T491A106M020AT
10000uF
C6, C9
3
CL10B105KO8NNNC
10000uF
C7, C13, C14
1
CC0603JRNPO9BN680
10000uF
C8
1
CC0603JRNPO9BN330
10000uF
C10
1
CL10A226MP8NUNE
10000uF
C11
1
CL10A106KP8NNND
10000uF
C12
1
RC0603FR-0710KL
1R
R1
1
RC0603FR-0722KL
1R
R2
1
RC0603FR-0722KL
0.1R
R3
1
RC0603FR-071ML
0.1R
R4
1
RC0603FR-07316KL
0.1R
R5
1
RC0603FR-07499KL
0.1R
R6
1
RC0603FR-07287KL
0.1R
R7

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