graph LR
subgraph "双向LLC/DAB变换拓扑"
A["高压直流母线 \n 750VDC"] --> B["输入滤波电容"]
B --> C["谐振电感"]
C --> D["谐振电容"]
D --> E["高频变压器初级"]
E --> F["LLC开关节点"]
F --> G["VBM18R12S \n 高压MOSFET"]
G --> H["初级地"]
I["变压器次级"] --> J["同步整流节点"]
J --> K["VBM18R12S \n 高压MOSFET"]
K --> L["输出滤波"]
L --> M["低压直流输出 \n 48-60VDC"]
N["双向控制器"] --> O["栅极驱动器"]
O --> G
O --> K
M -->|电压反馈| N
end
subgraph "保护与缓冲"
P["RCD缓冲电路"] --> G
Q["RC吸收电路"] --> F
R["TVS阵列"] --> A
S["电流互感器"] --> N
end
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style K fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
电池侧管理与并联拓扑
graph TB
subgraph "多路电池并联管理"
A["电池母线 \n 48-60VDC"] --> B["均流电感"]
B --> C["并联节点"]
subgraph "电池支路1"
D1["VBQF1615 \n MOSFET"] --> E1["电流检测电阻"]
E1 --> F1["电池组1+"]
G1["VBQF1615 \n MOSFET"] --> H1["电池组1-"]
end
subgraph "电池支路2"
D2["VBQF1615 \n MOSFET"] --> E2["电流检测电阻"]
E2 --> F2["电池组2+"]
G2["VBQF1615 \n MOSFET"] --> H2["电池组2-"]
end
subgraph "电池支路3"
D3["VBQF1615 \n MOSFET"] --> E3["电流检测电阻"]
E3 --> F3["电池组3+"]
G3["VBQF1615 \n MOSFET"] --> H3["电池组3-"]
end
C --> D1
C --> D2
C --> D3
F1 --> I1["电池管理IC"]
F2 --> I2["电池管理IC"]
F3 --> I3["电池管理IC"]
I1 --> J["主控制器"]
I2 --> J
I3 --> J
K["均流控制器"] --> L["栅极驱动器"]
L --> D1
L --> D2
L --> D3
L --> G1
L --> G2
L --> G3
end
subgraph "热管理与PCB设计"
M["2oz加厚铜箔"] --> N["散热过孔阵列"]
N --> O["内电层"]
P["DFN8底部焊盘"] --> Q["热扩散层"]
Q --> O
end
style D1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style G1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能分配与保护拓扑
graph LR
subgraph "智能负载分配通道"
A["MCU GPIO"] --> B["电平转换器"]
B --> C["VBI3328输入"]
subgraph "VBI3328双N-MOS结构"
direction LR
IN1["栅极1"]
IN2["栅极2"]
S1["源极1"]
S2["源极2"]
D1["漏极1"]
D2["漏极2"]
end
C --> IN1
C --> IN2
VCC_12V["12V辅助电源"] --> D1
VCC_12V --> D2
S1 --> LOAD1["散热风扇"]
S2 --> LOAD2["通信模块"]
LOAD1 --> GND1["地"]
LOAD2 --> GND2["地"]
end
subgraph "故障隔离与保护"
F["过流检测"] --> G["比较器"]
G --> H["故障锁存"]
H --> I["关断信号"]
I --> IN1
I --> IN2
J["温度传感器"] --> K["ADC"]
K --> L["MCU"]
L --> M["降载策略"]
N["防反接电路"] --> VCC_12V
O["TVS保护"] --> LOAD1
O --> LOAD2
end
style IN1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style IN2 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
三级热管理与EMC拓扑
graph TB
subgraph "三级散热系统"
A["一级: 强制风冷"] --> B["高压侧MOSFET \n 铝散热器"]
C["二级: PCB导热"] --> D["电池侧MOSFET \n 2oz铜箔+过孔"]
E["三级: 自然散热"] --> F["分配开关 \n 敷铜散热"]
G["温度传感器1"] --> H["风扇PWM控制"]
G --> I["泵速控制"]
H --> J["冷却风扇"]
I --> K["液冷泵(可选)"]
L["温度传感器2"] --> M["降载控制器"]
M --> N["功率限制"]
end
subgraph "EMC与电气保护"
O["共模滤波器"] --> P["差模滤波器"]
P --> Q["DC/DC输入"]
R["屏蔽电缆"] --> S["磁环抑制"]
S --> T["电池侧连接"]
U["紧凑叠层母线"] --> V["最小电流环"]
W["栅极电压箝位"] --> X["驱动电路"]
Y["隔离电源"] --> X
Z1["过流保护"] --> Z2["故障锁存"]
Z3["过压保护"] --> Z2
Z4["过温保护"] --> Z2
Z2 --> Z5["系统关断"]
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBI3328规格书
中文
English
