graph LR
subgraph "高压预充启动电路"
A["高压电池+"] --> B["主正接触器"]
B --> C["预充接触器"]
C --> D["预充电阻(50-200Ω)"]
D --> E["VBE165R16S \n 预充开关"]
E --> F["高压直流母线+"]
G["高压电池-"] --> H["主负接触器"]
H --> I["高压直流母线-"]
J["预充控制器"] --> K["驱动电路"]
K --> E
L["电压检测"] --> M["BMS"]
M --> N["时序控制"]
N --> B
N --> C
N --> J
end
subgraph "缓冲与保护电路"
O["RC缓冲网络"] --> E
P["TVS管"] --> F
Q["电压采样"] --> M
end
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
主驱逆变器功率拓扑详图
graph TB
subgraph "三相逆变桥(下管部分)"
A["直流母线+"] --> B["U相上管"]
A --> C["V相上管"]
A --> D["W相上管"]
B --> E["U相输出"]
C --> F["V相输出"]
D --> G["W相输出"]
E --> H["VBGN1105 \n U相下管"]
F --> I["VBGN1105 \n V相下管"]
G --> J["VBGN1105 \n W相下管"]
H --> K["直流母线-"]
I --> K
J --> K
end
subgraph "栅极驱动与保护"
L["电机控制器MCU"] --> M["PWM信号"]
M --> N["隔离栅极驱动器"]
N --> H
N --> I
N --> J
O["电流传感器"] --> P["过流保护"]
P --> Q["故障信号"]
Q --> N
R["温度传感器"] --> S["过温保护"]
S --> Q
end
subgraph "续流与缓冲"
E --> T["续流二极管"]
F --> U["续流二极管"]
G --> V["续流二极管"]
T --> A
U --> A
V --> A
W["母线电容"] --> A
W --> K
end
style H fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能负载管理拓扑详图
graph LR
subgraph "双通道智能开关(VBA3307)"
A["通道1输入"] --> B["VBA3307 通道1"]
C["通道2输入"] --> D["VBA3307 通道2"]
subgraph B ["通道1内部"]
direction LR
GATE1[栅极1]
DRAIN1[漏极1]
SOURCE1[源极1]
end
subgraph D ["通道2内部"]
direction LR
GATE2[栅极2]
DRAIN2[漏极2]
SOURCE2[源极2]
end
B --> E["负载1输出"]
D --> F["负载2输出"]
end
subgraph "控制与驱动电路"
G["域控制器GPIO"] --> H["电平转换"]
H --> B
H --> D
I["12V/24V电源"] --> J["输入滤波"]
J --> A
J --> C
end
subgraph "负载保护电路"
E --> K["续流二极管"]
F --> L["RC吸收"]
M["电流检测"] --> N["过流保护"]
N --> O["关断信号"]
O --> H
P["状态反馈"] --> G
end
subgraph "场景模式控制"
Q["露营模式"] --> R["负载组1"]
S["救援模式"] --> T["负载组2"]
U["行车模式"] --> V["负载组3"]
R --> G
T --> G
V --> G
end
style B fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与保护拓扑详图
graph TB
subgraph "三级散热架构"
A["一级散热: 强制风冷"] --> B["主驱MOSFET散热器"]
C["二级散热: 导热垫+PCB"] --> D["高压预充MOSFET"]
E["三级散热: PCB敷铜"] --> F["负载开关IC"]
G["环境温度传感器"] --> H["热管理控制器"]
H --> I["风扇PWM控制"]
H --> J["降频策略"]
I --> K["冷却风扇组"]
B --> K
end
subgraph "温度监控网络"
L["MOSFET结温估算"] --> H
M["散热器温度"] --> H
N["PCB温度"] --> H
O["环境温度"] --> H
P["温度梯度监测"] --> Q["散热异常检测"]
Q --> R["故障报警"]
R --> H
end
subgraph "降额保护策略"
S["壳温监测"] --> T["电流降额曲线"]
U["环境温度"] --> V["功率降额曲线"]
T --> W["实时电流限值"]
V --> X["实时功率限值"]
W --> Y["控制器限流"]
X --> Y
Y --> Z["电机控制器"]
end
subgraph "电气保护协调"
AA["过温保护"] --> AB["分级关断"]
AC["过流保护"] --> AB
AD["过压保护"] --> AB
AB --> AE["保护执行"]
AE --> AF["高压接触器"]
AE --> AG["逆变器驱动"]
AE --> AH["负载开关"]
end
style B fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBGN1105规格书
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