graph TB
subgraph "预充电路"
A["高压直流母线+"] --> B[主接触器常开]
B --> C[负载]
D["预充控制信号"] --> E["VBA3205通道1"]
E --> F[预充电阻]
F --> G[主接触器常开]
G --> C
end
subgraph "泄放电路"
H["高压直流母线+"] --> I[泄放控制信号]
I --> J["VBA3205通道2"]
J --> K[泄放电阻]
K --> L[地]
end
subgraph "控制逻辑"
M[MCU] --> N["继电器驱动"]
M --> O["MOSFET驱动"]
N --> P["主接触器线圈"]
O --> E
O --> J
Q["电压检测"] --> M
R["时序控制"] --> M
end
subgraph "安全状态"
S["初始状态"] --> T["闭合预充回路"]
T --> U["检测电压均衡"]
U --> V["闭合主接触器"]
V --> W["断开预充回路"]
W --> X["正常充电"]
X --> Y["断开主接触器"]
Y --> Z["闭合泄放回路"]
end
style E fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style J fill:#fff3e0,stroke:#ff9800,stroke-width:2px
PFC/辅助电源拓扑详图
graph LR
subgraph "PFC升压级"
A[整流后直流] --> B[PFC电感]
B --> C[PFC开关节点]
C --> D["VBP155R13 \n 550V/13A"]
D --> E[地]
F[PFC控制器] --> G[栅极驱动器]
G --> D
H[输出电压反馈] --> F
I[输入电流检测] --> F
end
subgraph "辅助电源级"
J[高压直流母线] --> K[辅助电源变压器]
K --> L[整流滤波]
L --> M["12V/5V输出"]
subgraph "辅助电源控制"
N[PWM控制器]
O[反馈网络]
P[保护电路]
end
N --> Q[驱动电路]
Q --> R["开关MOSFET"]
R --> K
O --> N
P --> N
end
subgraph "散热设计"
S[铝挤散热器] --> D
T[强制风冷] --> S
U[温度传感器] --> V[MCU]
V --> W[风扇控制]
W --> T
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
智能负载开关拓扑详图
graph TB
subgraph "BMS供电控制"
A[12V辅助电源] --> B["VBGQA1601 \n 60V/200A"]
B --> C[车辆BMS接口]
D[MCU控制信号] --> E[电平转换]
E --> F[栅极驱动]
F --> B
subgraph "保护功能"
G[过流检测]
H[短路保护]
I[软启动控制]
end
G --> J[故障锁存]
H --> J
I --> F
J --> K[关断信号]
K --> F
end
subgraph "通信模块电源"
L[12V辅助电源] --> M["VBGQA1601 \n 60V/200A"]
M --> N[通信模块]
O[MCU控制信号] --> P[电平转换]
P --> Q[栅极驱动]
Q --> M
subgraph "通信同步"
R[充电协议]
S[握手时序]
T[故障处理]
end
R --> O
S --> O
T --> U[保护电路]
U --> Q
end
subgraph "散热实现"
V[PCB散热设计] --> B
V --> M
subgraph "散热特征"
W["2oz加厚铜箔"]
X["散热过孔阵列"]
Y["导热桥至机壳"]
end
W --> V
X --> V
Y --> V
end
style B fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style M fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
热管理与保护拓扑详图
graph LR
subgraph "三级热管理系统"
A["一级: 主动散热"] --> B["PFC MOSFET \n (VBP155R13)"]
C["铝挤散热器"] --> B
D["冷却风扇"] --> C
E["二级: PCB传导"] --> F["负载开关MOSFET \n (VBGQA1601)"]
G["2oz铜箔+过孔"] --> F
H["金属基板/导热桥"] --> F
I["三级: 自然对流"] --> J["集成开关 \n (VBA3205)"]
K["局部敷铜"] --> J
L["空气对流"] --> J
end
subgraph "温度监测网络"
M["NTC传感器1 \n (PFC散热器)"] --> N[MCU]
O["NTC传感器2 \n (PCB热点)"] --> N
P["NTC传感器3 \n (环境)"] --> N
Q["温度监控算法"] --> N
end
subgraph "保护电路"
R["RCD缓冲电路"] --> B
S["RC吸收电路"] --> B
T["TVS阵列"] --> U["栅极驱动芯片"]
V["肖特基二极管"] --> F
W["电流检测电路"] --> X["比较器"]
X --> Y["故障锁存"]
Y --> Z["系统关断"]
Z --> B
Z --> F
end
subgraph "控制策略"
AA["温度<70°C"] --> AB["正常模式"]
AC["70°C<温度<85°C"] --> AD["降额模式"]
AE["温度>85°C"] --> AF["关断保护"]
AG["热管理算法"] --> N
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style J fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBPB112MI25规格书
中文
English
