一种基于硬线信号联动的多重高压安全防护装置

Abstract

一种基于硬线信号联动的多重高压安全防护装置，涉及电动汽车高压配电系统安全技术领域，包括电池管理系统、整车控制器和高压配电柜，所述高压配电柜设有电连接于动力电池与高压负载之间的主回路继电器，并设有电连接于所述主回路继电器的高压检测控制器，所述高压检测控制器、电池管理系统和整车控制器三者之间通过硬线相互电连接，并通过CAN总线相互通信连接。本实用新型中高压检测控制器、电池管理系统和整车控制器在报警信号传输方面具有双层安全防护功能，能够避免现有技术中仅通过CAN总线进行报警信号传输所存在的信号丢失或滞后的现象，有效地提高了信号传输的可靠性和安全性，进而提高了整车的高压用电安全。

Claims

1. A multi-level high-voltage safety protection device based on hard-wired signal linkage, comprising a battery management system, a vehicle controller, and a high-voltage distribution cabinet, wherein the high-voltage distribution cabinet is equipped with a main circuit relay electrically connected between the power battery and the high-voltage load, characterized in that: The high-voltage distribution cabinet is equipped with a high-voltage detection controller that is electrically connected to the main circuit relay. The high-voltage detection controller, the battery management system, and the vehicle controller are electrically connected to each other via hard wiring and communicate with each other via a CAN bus.

2. A multiple high-voltage safety protection device based on hard-wire signal linkage according to claim 1, characterized in that: The high-voltage detection controller is equipped with a first relay coil drive module, which is electrically connected to the coil of the main circuit relay.

3. A multiple high voltage safety protection device based on hard-wired signal linkage according to claim 2, characterized in that: The high-voltage detection controller is equipped with a first relay status monitoring module, which is electrically connected to the main contacts of the main circuit relay.

4. A multiple high voltage safety protection device based on hard-wired signal linkage according to claim 3, characterized in that: The high-voltage distribution cabinet is equipped with a load relay. The first relay coil drive module is electrically connected to the coil of the load relay, and the first relay status monitoring module is electrically connected to the main contacts of the load relay.

5. A multiple high voltage safety protection device based on hard-wired signal interlocking according to claim 3, characterized in that: The high-voltage distribution cabinet is equipped with a pre-charge relay. The first relay coil drive module is electrically connected to the coil of the pre-charge relay, and the first relay status monitoring module is electrically connected to the main contacts of the pre-charge relay.

6. A multi-level high-voltage safety protection device based on hard-wired signal linkage as described in claim 1, characterized in that: The high-voltage detection controller is equipped with a first fault diagnosis and processing module, which is used to receive, process and store alarm signals from the battery management system and the vehicle controller.

7. A multiple high voltage safety protection device based on hard-wired signal interlocking according to claim 6, characterized in that: The battery management system is provided with a second fault diagnosis and processing module, and the vehicle controller is provided with a third fault diagnosis and processing module; the first fault diagnosis and processing module, the second fault diagnosis and processing module, and the third fault diagnosis and processing module are interconnected.

8. A multiple high voltage safety protection device based on hard-wired signal linkage according to claim 3, characterized in that: The main circuit relay is a main positive relay, and the high-voltage distribution cabinet is also equipped with a main negative relay. The first relay status monitoring module is electrically connected to the main contacts of the main negative relay. The battery management system is equipped with a second relay coil drive module, which is electrically connected to the coil of the main negative relay.

9. A multiple high voltage safety protection device based on hard-wired signal linkage according to claim 1, characterized in that: The hard wire is a twisted-pair shielded cable or a coaxial cable.

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