Description
Measuring battery performance and safety using internal resistance (AC-IR) and open-circuit voltage (OCV)
Inspect the quality of completed cells, modules, and packs on production lines. Measure internal resistance (AC-IR) and open-circuit voltage (OCV) to check battery quality. Cells produced at the cell production factory are shipped to the module production factory after undergoing a shipping inspection. Since factors such as vibrations during shipment and even the passage of time can cause defects, batteries undergo an acceptance inspection before being assembled into modules and packs.
BT3561A
Small cells for power motors, Small packs of up to 60 V
Voltage measurement ranges: 6 V/60 V
Resistance measurement ranges: 30 mΩ/300 mΩ/3 Ω/30 Ω/300 Ω/3 kΩ
BT3562A
Large cells for xEVs, Mid-sized packs of up to 100 V
Voltage measurement ranges: 6 V/60 V/100 V
Resistance measurement ranges: 3 mΩ/30 mΩ/300 mΩ/3 Ω/30 Ω/300 Ω/3 kΩ
BT3563A
Large packs for xEVs, Large packs of up to 300 V
Voltage measurement ranges: 6 V/60 V/300 V
Resistance measurement ranges: 3 mΩ/30 mΩ/300 mΩ/3 Ω/30 Ω/300 Ω/3 kΩ
The De Facto Standard of Battery Testers
The HIOKI BT356xA series
These highly advanced battery testers are best suited for shipping and acceptance inspections of cells and battery packs. They simultaneously measure internal resistance and the battery’s open-circuit voltage (OCV).
Since the AC-IR measurement method is used, the measurement time is shortened. In addition, highly repeatable results are attained with this method. These testers have a highly accurate 3 mΩ range, allowing for a resistance measurement of battery tab welding and bus bars. All of this combines for the best choice in battery testers.
High input voltage applications The input high voltage (1,000 V) model, BT3564, can measure the total resistance of the battery whole pack at once.
*Watch with the video subtitles on, to see detailed descriptions.
Reducing test system development cost and management man-hours
The new BT356xA has dramatically improved tolerances for line resistance compared to previous models. This improvement makes it easy to build test systems with large numbers of channels using relays. Additionally, a longer maintenance cycle for systems in use means fewer maintenance man-hours. Finally, its capability to handle thinner cables than with previous models* makes it easier to route cables.
*AWG 29 (0.064 mm2) wire equivalent to 2.2 Ω over
an 8 m round trip can be used with the 3 mΩ or 30 mΩ range.
Basic Specifications
Resistance measurement ranges | 3 mΩ(Max. display: 3.1000 mΩ, resolution: 0.1 μΩ, measurement current: 100 mA) 30 mΩ(Max. display: 31.000 mΩ, resolution: 1 μΩ, measurement current: 100 mA) 300 mΩ(Max. display: 310.00 mΩ, resolution: 10 μΩ, measurement current: 10 mA) 3 Ω(Max. display: 3.1000 Ω, resolution: 100 μΩ, measurement current: 1 mA) 30 Ω(Max. display: 31.000 Ω, resolution: 1 mΩ, measurement current: 100 μA) 300 Ω(Max. display: 310.00 Ω, resolution: 10 mΩ, measurement current: 10 μA) 3 kΩ(Max. display: 3.1000 kΩ, resolution: 100 mΩ, measurement current: 10 μA)Basic accuracy: ±0.5% rdg ±10 dgt(3 mΩ range), ±0.5% rdg ±5 dgt(30 mΩ range or more) Measurement frequency: 1 kHz ±0.2 Hz Measurement method: AC four-terminal method |
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Voltage measurement ranges | 6 V(Max. display: 6.00000 V, resolution: 10 μV) 60 V(Max. display: 60.0000 V, resolution: 100 μV) 300 V(Max. display: 300.000 V, resolution: 1 mV)Basic accuracy: ±0.01% rdg. ±3 dgt. |
Response time | 10 ms |
Sampling period | Ω or V (60 Hz): 4 ms (EX.FAST), 12 ms (FAST), 35 ms (MEDIUM), 150 ms (SLOW) ΩV (60 Hz): 8 ms (EX.FAST), 24 ms (FAST), 70 ms (MEDIUM), 253 ms (SLOW)Ω or V (50 Hz): 4 ms (EX.FAST), 12 ms (FAST), 42 ms (MEDIUM), 157 ms (SLOW) ΩV (50 Hz): 8 ms (EX.FAST), 24 ms (FAST), 84 ms (MEDIUM), 259 ms (SLOW) |
Functions | Contact check, Zero adjustment (±1000 counts), Pulse measurement, Comparator (Hi/ IN/ Lo), Statistical calculations (Max. 30,000), Delay, Average, Panel saving/loading, Memory storage, LabVIEW® driver |
Interfaces | LAN (TCP/IP, 10BASE-T/100BASE-TX) RS-232C (Max. 38.4 kbps, Available as printer I/F) EXT I/O (37-pin Handler interface) Analog output (DC 0 V to 3.1 V) |
Power supply | 100 to 240 V AC, 50 Hz/60 Hz, 35 VA max. |
Dimensions and mass | 215 mm (8.46 in) W × 80 mm (3.15 in) H × 295 mm (11.61 in) D, 2.4 kg (84.7 oz) |