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BEC900280G

150kW 900V Bidirectional DCDC Power Converter

BEC900280G.png
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Product Introduction

BEC900280G is the bidirectional DCDC converter used to connect the battery to the DC bus. It specifically aims for bidirectional  DCDC applications in battery energy storage systems with multiple battery groups in parallel to achieve safety isolation and  flexible capacity expansion. It also can be used in retired battery utilization and DC micro grid applications. By employing the high  frequency SiC MOSFET switch technology, it can achieve excellent performance, high power density, high efficiency and high  reliability.

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    280A constant current, wide voltage range: 300V-870V at the battery side, 650V-900V at the DC bus side
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    Non-isolated bidirectional DCDC module, UHPD 2.1 times of the industry's average
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    Peak efficiency is 99.6%
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    Rapid current direction change within 10ms, automatic constant bus voltage support
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    Conformal coating and glue flling provide high protection for high reliability

Application

  • BES application
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    BES application_01.svg

Product Values

  • Power Module Battery Side Charge/Discharge Current and Voltage Curve
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  • Power Module Battery Side Charge/Discharge Power and Voltage Curve
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Technical Specification

  • BEC900280G
  • Environmental
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      Ambient temperature-40°C~+75°C/power derating from 55°C
      Storage temperature-40°C~+60°C
      Humidity/altitude≤95%RH/2000m
  • Battery side (low volt side)
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      Voltage range300V~870V
      Voltage gap to high voltage side>30V
      Current range-280A~+280A
      Power150kW @535V~870V
      Precision of steady current1%
      Current ripple<5%, @600V, 50% ≤ Po ≤ 100%
  • DC2DC conversion time (with battery test)
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      10ms,<100ms @90% charge to 90% discharge or 90% discharge to 90% charge
  • DC bus side (high volt side)
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      Voltage range650V~900V
      Current range-230A~+230A
      Power150kW @650V~900V
  • Control
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      CommunicationCAN bus
      Indication lightGreen LED: ON for running, breathing for standby mode; yellow LED: alarm; red LED: failure
  • Peak efficiency
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      ≥99.6%
  • Full load efficiency
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      >98%
  • Standby power consumption
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      <15W
  • No load power consumption
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      <750W
  • Power module in parallel
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      Max 16 on DC bus side, can not work in parallel in battery side
  • Protection
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      IP20
  • EMC
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      TUV CE certificationEN IEC61000-6-2:2019, EN IEC61000-6-4:2019 (2025 Q4)
  • Safety
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      TUV CE/cTUVus certificationUL1741, CSA107.1; EN IEC62477-1:2023 (2025 Q4)
  • Mechanical
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      Dimensions/weight: 140mm (H) × 385mm (W) × 600mm (D) (excluding the holder and interface plug), ≤30kg
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