High-precision impedance measurement device
AssigneeMintech Co., Ltd
InventorsHyung Bin Son, Young Jae Lee, Gyeong Rin Choi, Young Jin Hong
Life of this patent
Estimating the term…
Abstract
An impedance measurement device of the present disclosure includes: an electrochemical energy device; an amplifier connected to each connection terminal of the electrochemical energy device and configured to amplify a signal introduced into a wiring; and a main board configured to receive the signal from the amplifier and measure an impedance. Accordingly, the present invention has advantages in that high resistance to electromagnetic interference may be achieved by disposing a preamplifier close to a terminal of an electrochemical energy device to amplify only the signal without amplifying a noise introduced into a wiring.
Claims3
An impedance measurement device comprising:
- an electrochemical energy device;
- an amplifier connected to each connection terminal of the electrochemical energy device and configured to remove a DC signal of a signal introduced through a wiring, allow an AC signal of the signal to pass therethrough, and amplify and provide the AC signal;
- a main board configured to receive the AC signal from the amplifier and measure an impedance of the AC signal, and
- wherein the amplifier comprises,
- a DC blocking portion configured to remove a DC signal of a signal of a power applied from the electrochemical energy device and allow an AC signal of the signal to pass therethrough;
- a first amplifier configured to be disposed close to the connection terminal of the electrochemical energy device to not amplify a common mode noise introduced through the wiring and to amplify the AC signal;
- and
- a second amplifier configured to be isolated from the first amplifier and to provide the signal amplified by the first amplifier to the main board.
Dependencies are inferred from the claim text.