DH7007 AC Impedance Testing and Analysis System Introduction: The conventional version of DH7007 is equipped with 1+15 independent testing channels (1 current acquisition channel and 15 voltage acquisition channels), which are widely used for impedance testing of fuel cell stack cells, lithium batteries, and small chambers in electrolytic cells. Features: 1. Isolation technology Power isolation and acquisition channel isolation ensure that the applied AC current does not divert to the electronic load. The acquisition channel adopts high input impedance to reduce the impact of cell impedance measurement 2. Strong testing performance Accurately measure the impedance of each cell in a relatively stable high current discharge state of the battery stack 3. High precision impedance testing Using precise single sine technology and FFT calculation, ensuring accurate and stable impedance testing, with impedance accuracy ≤ ± 2 ‰ 4. Infinite channel expansion Multiple DH7007s achieve unlimited channel expansion through Ethernet switches or routers, and can control synchronous sampling of all channels through a single computer Technical parameters: Number of channels: (15 voltage channels+1 current channel)/unit, with optional total stack impedance measurement channels Maximum AC current peak output: ± 20A p (optional ± 50A p) Maximum output power: 600W Maximum isolation voltage: 1000V Current range range: 20A Voltage range range: 5mV; 50mV; 500mV; 5V (4th gear) Measurement voltage range (open circuit potential): ± 5V Voltage acquisition accuracy: ≤ ± 0.1% (FS) Sampling rate: Each channel has a continuous sampling rate of 256kHz Input impedance of each acquisition channel:>100M Ω EIS measurement accuracy: ± 2 ‰ Impedance measurement frequency range: 0.001Hz~10kHz Impedance scanning method: linear or logarithmic Communication interface: Ethernet Power supply: 220V, 50Hz Minimum impedance measurement of battery stack cells: 10 μ Ω Electrode connection method: four electrodes Presentation of test results: impedance spectrum and data table
Introduction: The conventional version of DH7007 is equipped with 1+15 independent testing channels (1 current acquisition channel and 15 voltage acquisition channels), which are widely used for impedance testing of fuel cell stack cells, lithium batteries, and small chambers in electrolytic cells.
