The utility model provides a kind of back contact battery I-V testing device, it includes test mechanism and the compacting mechanism of battery compression in the test mechanism above, test mechanism includes bearing
station and is set on the tester of bearing
station, the probe of tester protrudes from the upper surface of bearing
station, compacting mechanism includes frame and is set on the transparent
pressboard of frame, transparent
pressboard includes the frame portion of four around, multiple parallelly arranged strip portion and
openwork, two ends of strip portion are fixedly connected with frame portion, strip portion corresponds with the main grid line position of battery, the width of strip portion is greater than the width of main grid line,
openwork is formed between strip portion and frame portion.The probe of the compacting mechanism of the utility model cooperates with test mechanism, not only can ensure that test measuring needle and battery main grid line are in full contact, can form stable
electrical connection, reduce
contact resistance, but also can reduce shading, provide reliable current transmission path for battery I-V test, effectively guarantee the accuracy and stability of
test data.