Description
📌 Typical Application Scenarios
⚡ Core Features & Product Advantages
Safer & More Reliable
- ✓ Full high‑frequency isolation (hardware‑level safety)
- ✓ Dual DSP + CPLD digital control + multi‑layer protection
- ✓ Up to 12 units parallel · flexible power expansion
- ✓ Wide grid voltage/frequency adaptive range
Higher Conversion Efficiency
- ✓ No bulky line‑frequency transformer · overall >95%
- ✓ AC/DC three‑level topology · peak up to 98%
- ✓ DC/DC soft‑switching resonant · peak up to 98%
Smarter & User‑Friendly
- ✓ STS optional · seamless on/off‑grid transition
- ✓ 100‑750Vdc wide battery voltage coverage
- ✓ 50/60Hz auto‑adapt · global ready
Lower System Cost
- ✓ Eliminates line‑frequency transformer · BOM cost down
- ✓ Single circuit integrates charging + inverting
📋 Product Specifications
| ⚡ Rated Grid & AC Side (Charging) | ||
|---|---|---|
| Parameter | BAC1K070 This model was discontinued in April 2026 | BAC300100-II |
| Grid Voltage | 400Vac (380/400/415 selectable) | 400Vac (380/400/415 selectable) |
| Grid Voltage Range | 304–485Vac | 304–485Vac |
| Grid Frequency | 50/60 ±5%, dual‑mode adaptive | 50/60 ±5%, dual‑mode adaptive |
| Electrical System | 3W+N+PE | 3W+N+PE |
| Full‑load Input Current | ≤38A | ≤29A |
| Power Factor | ≥0.99 (full load) | ≥0.99 (full load) |
| Current THD | <3% (full load) | <3% (full load) |
| Output Voltage Range | 200‑1000Vdc (rated 280V) | 40‑300Vdc (rated 150V) |
| Rated Output Current | 70A | 100A |
| Rated Charging Power | 20kW | 15kW |
| Power Derating Range | 280‑1000Vdc (low power); 200‑280Vdc (70A current‑limit) | 150‑300Vdc (low power); 40‑150Vdc (100A current‑limit) |
| Charging Efficiency | SiC: up to 95%; Si: 94% | SiC: up to 95%; Si: 94% |
| Voltage Regulation Accuracy | ±0.5% | ±0.5% |
| Current Regulation Accuracy | ±1% | ±1% |
| Output Ripple Coefficient | <1% Vo | <1% Vo |
| 🔋 Discharging Parameters | ||
| Battery Voltage Range | 200‑1000Vdc (rated 280V) | 40‑300Vdc (rated 150V) |
| Max Discharge Current | 70A Max | 100A Max |
| Discharge Mode | V2G grid‑connected discharge | |
| Grid Voltage Range (AC side) | 304–485Vac | 304–485Vac |
| Grid Frequency | 50/60 ±5% dual‑mode adaptive | 50/60 ±5% dual‑mode adaptive |
| Rated Output Power | 20kW | 15kW |
| Discharging Efficiency | SiC: up to 95%; Si: 94% | SiC: up to 95%; Si: 94% |
| 🛡️ Protection Functions | ||
| Over‑Voltage Protection | ✔ | ✔ |
| Over‑Current Protection | ✔ | ✔ |
| Short‑Circuit Protection | ✔ | ✔ |
| Over‑Temperature Protection | ✔ | ✔ |
| 🌡️ Environmental & Mechanical | ||
| Operating Temperature | ‑30 to 65°C (derating above 55°C) | |
| Storage Temperature | ‑40 to 75°C | |
| Acoustic Noise | <60dB | |
| Cooling | Intelligent speed‑controlled forced air | |
| Dimensions (W×D×H) | 320×459×86 mm | 320×459×86 mm |
| Weight | 13.5 kg | 12 kg |
| Ingress Protection | IP20 (for indoor cabinet use) | |
| 📜 Compliance Standards | ||
| Applicable Standards | GB/T 31433‑2017; NB/T 33001‑2018; GB/T 34120‑2017; NB/T 33008‑2018 | |
* Specifications are subject to the official datasheet.
🔌 Electrical Topology & Working Modes
⟷
AC/DC Three‑Level Rectifier
⟷
DC Bus
⟷
High‑Frequency Isolated DC/DC
⟷
🔋 Battery Pack
DSG Battery → isolated DC/DC boost → AC/DC inversion → grid feedback (V2G)
AC → DC rectification → isolated DC/DC step‑down → charges battery (low/high voltage)
Battery → isolated DC/DC boost → AC/DC inversion → feeds back to AC grid (V2G / peak shaving)
🛡️ Protection & Safety System
❓ Frequently Asked Questions
What are the key upgrades from first‑gen BIM series?
Volume reduced to 58% of the original; power density greatly improved; standardized BAC300100‑II models; optimized high‑frequency isolation topology; higher efficiency; lighter structure; hot‑swap maintenance support.
How many modules can be paralleled? What about current sharing?
Up to 12 identical modules per system. Digital current‑sharing control ensures imbalance ≤5%, ideal for large‑scale storage and battery formation lines.
Does it support off‑grid operation and V2G discharge?
Yes — with optional STS static transfer switch, seamless on/off‑grid transition. Native V2G grid‑connected discharge supports bidirectional EV energy scheduling.
Which Chinese standards does it meet? Can it be used in storage plants & charger lines?
Meets both PCS and off‑board charger GB/NB standards. Directly applicable to large‑scale electrochemical storage, battery formation, second‑life storage, and V2G charging stations.
📦 Other Related Products
50kW / 100kW / 250kW SiC bidirectional DC‑DC
On‑board charger modules · DC fast‑charging power units
Seamless on/off‑grid transition
Battery management · integrated storage control cabinets
For battery testing & aging applications
🔗 Explore more at imax-pwr.com/product/
Imax Power Technology Co., Ltd.
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