graph LR
subgraph "SiC MOSFET主变换桥臂"
A["高压电池输入 \n 800VDC"] --> B["输入滤波 \n LC网络"]
B --> C["DC-DC输入母线"]
C --> D["桥臂中点"]
subgraph "上桥臂"
Q_TOP1["VBL712MC100K \n 1200V/100A"]
Q_TOP2["VBL712MC100K \n 1200V/100A"]
end
subgraph "下桥臂"
Q_BOT1["VBL712MC100K \n 1200V/100A"]
Q_BOT2["VBL712MC100K \n 1200V/100A"]
end
C --> Q_TOP1
Q_TOP1 --> D
C --> Q_TOP2
Q_TOP2 --> D
D --> Q_BOT1
Q_BOT1 --> E["功率地"]
D --> Q_BOT2
Q_BOT2 --> E
end
subgraph "谐振与变压器"
D --> F["LLC谐振腔 \n (Lr, Cr)"]
F --> G["高频变压器 \n 初级"]
G --> H["变压器次级"]
H --> I["同步整流桥"]
I --> J["输出滤波"]
J --> K["逆变器输入 \n 400VDC"]
end
subgraph "驱动与控制"
L["数字控制器"] --> M["隔离栅极驱动器"]
M --> N["驱动信号调理"]
N --> Q_TOP1
N --> Q_TOP2
N --> Q_BOT1
N --> Q_BOT2
O["电流采样"] --> L
P["电压采样"] --> L
end
style Q_TOP1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style Q_BOT1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
电池保护与预充拓扑详图
graph TB
subgraph "电池组接入与保护"
A["800VDC电池组正极"] --> B["主熔断器"]
B --> C["防雷浪涌保护器(SPD)"]
C --> D["主接触器"]
D --> E["保护开关节点"]
subgraph "双向保护MOSFET"
Q_PROT_P["VBL1204N \n 200V/45A"]
Q_PROT_N["VBL1204N \n 200V/45A"]
end
E --> Q_PROT_P
Q_PROT_P --> F["预充控制节点"]
E --> Q_PROT_N
Q_PROT_N --> G["电池回路地"]
end
subgraph "预充电路"
F --> H["预充接触器"]
H --> I["预充电阻 \n (限制浪涌)"]
I --> J["DC-DC输入母线"]
K["主接触器旁路"] --> J
F --> K
end
subgraph "保护逻辑与控制"
L["BMS控制器"] --> M["保护逻辑"]
M --> N["驱动电路"]
N --> Q_PROT_P
N --> Q_PROT_N
O["电压检测"] --> L
P["电流检测(霍尔)"] --> L
Q["温度检测"] --> L
R["绝缘监测"] --> L
end
subgraph "故障处理"
S["过流检测"] --> T["硬件比较器"]
T --> U["故障锁存"]
U --> V["快速关断"]
V --> Q_PROT_P
V --> Q_PROT_N
end
style Q_PROT_P fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style Q_PROT_N fill:#fff3e0,stroke:#ff9800,stroke-width:2px
辅助电源与负载管理拓扑详图
graph LR
subgraph "辅助电源变换"
A["48V电池输入"] --> B["输入保护"]
B --> C["DC-DC变换器"]
subgraph "同步整流侧"
Q_SYNC1["VBA1303C \n 30V/18A"]
Q_SYNC2["VBA1303C \n 30V/18A"]
end
C --> D["同步整流节点"]
D --> Q_SYNC1
D --> Q_SYNC2
Q_SYNC1 --> E["输出滤波"]
Q_SYNC2 --> E
E --> F["12V辅助母线"]
E --> G["5V辅助母线"]
E --> H["3.3V辅助母线"]
end
subgraph "智能负载开关通道"
subgraph "12V负载通道"
I["12V辅助母线"] --> J_12V["VBA1303C"]
J_12V --> K_12V["负载1: BMS"]
J_12V --> L_12V["负载2: 通信"]
end
subgraph "5V负载通道"
M["5V辅助母线"] --> N_5V["VBA1303C"]
N_5V --> O_5V["负载3: 控制板"]
N_5V --> P_5V["负载4: 传感器"]
end
subgraph "风扇控制"
Q["PWM控制信号"] --> R_FAN["VBA1303C"]
R_FAN --> S["冷却风扇组"]
end
end
subgraph "控制与监控"
T["主控MCU"] --> U["GPIO扩展"]
U --> J_12V
U --> N_5V
U --> R_FAN
V["电流检测"] --> T
W["温度检测"] --> T
X["状态反馈"] --> T
end
style Q_SYNC1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style J_12V fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style N_5V fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
点击下载：VBL1204N规格书
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