graph LR
subgraph "PFC前端电路"
A[三相380VAC] --> B[EMI滤波器]
B --> C[三相整流桥]
C --> D[PFC母线电容]
D --> E[高压直流母线 \n 400VDC]
end
subgraph "主加热管驱动电路"
E --> F["加热控制继电器"]
F --> G["VBP18R47S \n 上桥臂"]
G --> H[加热管正极]
H --> I["主加热管 \n 3-6kW"]
I --> J[加热管负极]
J --> K["VBP18R47S \n 下桥臂"]
K --> L[功率地]
M["加热控制器"] --> N["隔离驱动器 \n >2A驱动能力"]
N --> G
N --> K
end
subgraph "保护与缓冲"
O["RC吸收网络"] --> G
P["RC吸收网络"] --> K
Q["TVS保护"] --> N
R["过流检测"] --> I
R --> S["故障锁存"]
S --> M
end
style G fill:#ffebee,stroke:#f44336,stroke-width:2px
style K fill:#ffebee,stroke:#f44336,stroke-width:2px
循环风机驱动拓扑详图
graph TB
subgraph "BLDC电机三相桥"
A[48V辅助总线] --> B[U相上桥]
A --> C[V相上桥]
A --> D[W相上桥]
subgraph "上桥MOSFET"
B_U["VBPB1102N"]
C_V["VBPB1102N"]
D_W["VBPB1102N"]
end
B --> B_U
C --> C_V
D --> D_W
B_U --> E[U相输出]
C_V --> F[V相输出]
D_W --> G[W相输出]
E --> H[BLDC电机]
F --> H
G --> H
H --> I[U相下桥]
H --> J[V相下桥]
H --> K[W相下桥]
subgraph "下桥MOSFET"
I_U["VBPB1102N"]
J_V["VBPB1102N"]
K_W["VBPB1102N"]
end
I --> I_U
J --> J_V
K --> K_W
I_U --> L[功率地]
J_V --> L
K_W --> L
end
subgraph "BLDC控制与驱动"
M["BLDC控制器"] --> N["三相预驱动器"]
N --> O["U相栅极驱动"]
N --> P["V相栅极驱动"]
N --> Q["W相栅极驱动"]
O --> B_U
O --> I_U
P --> C_V
P --> J_V
Q --> D_W
Q --> K_W
R["霍尔传感器"] --> M
S["PWM调速"] --> M
end
subgraph "散热与保护"
T["独立散热器"] --> B_U
T --> C_V
T --> D_W
U["栅极电阻10Ω"] --> O
V["退耦电容"] --> N
end
style B_U fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style I_U fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
智能控制模块拓扑详图
graph LR
subgraph "MCU与电平转换"
A["主控MCU \n 3.3V/5V逻辑"] --> B[电平转换电路]
subgraph "电平转换"
C["NPN三极管"]
D["上拉电阻"]
end
B --> C
B --> D
end
subgraph "智能负载开关通道"
E[12V辅助电源] --> F["VBG3638输入"]
subgraph F ["VBA2317 P-MOSFET"]
direction LR
IN[栅极]
S[源极]
DRAIN[漏极]
end
C --> IN
D --> IN
S --> E
DRAIN --> G[负载正极]
G --> H["负载(UV灯/传感器等)"]
H --> I[负载地]
J["RC吸收/TVS"] --> DRAIN
end
subgraph "多路负载控制"
subgraph "开关阵列"
K1["VBA2317 \n 通道1"]
K2["VBA2317 \n 通道2"]
K3["VBA2317 \n 通道3"]
K4["VBA2317 \n 通道4"]
end
A --> L["GPIO扩展"]
L --> M1[电平转换1]
L --> M2[电平转换2]
L --> M3[电平转换3]
L --> M4[电平转换4]
M1 --> K1
M2 --> K2
M3 --> K3
M4 --> K4
K1 --> N1[UV-C灯管]
K2 --> N2[臭氧模块]
K3 --> N3[传感器组]
K4 --> N4[显示背光]
end
subgraph "保护与监控"
O["过流检测"] --> G
P["温度监控"] --> H
O --> A
P --> A
end
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style K1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
热管理与保护拓扑详图
graph TB
subgraph "三级散热架构"
A["一级: 独立散热器"] --> B["强制风冷"]
B --> C["主功率MOSFET \n TO-247/TO-3P"]
D["二级: PCB敷铜"] --> E["风道冷却"]
E --> F["控制MOSFET \n SOP8"]
G["三级: 柜内风道"] --> H["整体循环散热"]
H --> I["消毒柜腔体 \n 及所有组件"]
end
subgraph "温度监控网络"
subgraph "NTC传感器阵列"
J["加热腔NTC"]
K["MOSFET散热器NTC"]
L["环境温度NTC"]
M["出风口NTC"]
end
J --> N["MCU ADC"]
K --> N
L --> N
M --> N
N --> O["温度控制算法"]
O --> P["PWM风扇控制"]
O --> Q["功率降额管理"]
end
subgraph "电气保护网络"
R["RC吸收电路"] --> S["主开关管"]
T["TVS阵列"] --> U["栅极驱动"]
V["快速熔断器"] --> W["主电源通路"]
X["过流比较器"] --> Y["故障检测"]
Y --> Z["关断信号"]
Z --> S
end
subgraph "环境适应性设计"
AA["防硫化封装"] --> AB["沿海/高湿环境"]
AC["三防漆涂覆"] --> AD["PCB防护"]
AE["密封连接器"] --> AF["接口防护"]
end
style C fill:#ffebee,stroke:#f44336,stroke-width:2px
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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