CN-121989694-A - High-voltage power-on protection method and device, electronic equipment and medium

CN121989694ACN 121989694 ACN121989694 ACN 121989694ACN-121989694-A

Abstract

The invention relates to a high-voltage power-on protection method, a device, electronic equipment and a medium, wherein the method comprises the steps of collecting a power-on high-voltage instruction and an overhaul signal sent by a cabin door proximity switch and/or a detection switch; the method comprises the steps of receiving an overhaul signal and a high-voltage instruction, judging the validity of the overhaul signal when the overhaul signal is valid, driving a rear cabin buzzer to carry out audible and visual alarm by a whole vehicle control module, sending a prompt signal or a fault code to an instrument, sending an alarm instruction to a remote monitoring terminal, and executing a high-voltage flow when the overhaul signal is invalid. The method reduces the dependence on manual operation, and greatly improves the safety of maintenance work through an automatic control and feedback mechanism.

Inventors

ZHAO RUIFENG
REN TIANLIANG
HU XIANGWEN
LI YUAN
SU XIAOZHONG
XU JIAJUN
CAI JINGCHENG

Assignees

中车时代电动汽车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241107

Claims (10)

1. The high-voltage power-on protection method is characterized by comprising the following steps of: Collecting an upper high-voltage instruction and an overhaul signal sent by a cabin door proximity switch and/or a detection switch; Judging the validity of the overhaul signal when the overhaul signal and the upper high-voltage instruction are received; when the overhaul signal is effective, the whole vehicle control module drives the rear cabin buzzer to carry out audible and visual alarm, and sends a prompt signal or a fault code to the instrument, and simultaneously sends an alarm instruction to the remote monitoring terminal; and when the overhaul signal is invalid, executing the upper high-voltage flow.
2. The high-voltage power-on protection method according to claim 1, wherein the acquisition of the overhaul signal sent by the cabin door proximity switch is obtained by judging whether the cabin door is opened or not, and the acquisition of the overhaul signal sent by the detection switch is obtained by judging whether the detection switch is pressed or not.
3. The method of high voltage power on protection as recited in claim 1, wherein the method of determining the validity of the service signal comprises: determining whether the cabin door is in an open state or not through a signal acquisition pin of the cabin door proximity switch; Detecting a signal level of the overhaul switch to identify whether the overhaul signal is at a high level; and when the cabin door state is opened or the overhaul signal is high level, judging that the cabin door is valid.
4. The high voltage power-on protection method according to claim 1, wherein when the vehicle is serviced, the cabin door and the service switch are closed.
5. The high voltage power-on protection method of claim 1, wherein when performing a power-on high voltage flow, performing the following operations: sending a cabin door opening prompt message to a vehicle instrument; Activating a rear cabin buzzer to perform audible and visual alarm; and transmitting the high-voltage alarm information to a remote monitoring terminal so as to push the alarm information to the mobile terminal through the background.
6. The method of claim 5, wherein the alarm information is transmitted to the mobile terminal of the service personnel through the cloud platform to provide an audible or vibratory alarm.
7. A high voltage power-on protection device, comprising: a power module configured to supply power to the vehicle electrical component; the whole vehicle control module is connected to the cabin door proximity switch and the overhaul switch, is configured to collect cabin door proximity switch signals to judge the cabin door switch state, provides a driving power supply to drive the buzzer to work, and judges whether to send high-voltage instructions and alarm information to each component control module according to the cabin door state and the overhaul signals; the remote monitoring module is communicated with the whole vehicle control module, is configured to collect vehicle data and uploads fault alarm information to the mobile terminal APP through a background; the display module is connected with the whole vehicle control module and is configured to display the opening and closing state of the cabin door, prompt information and alarm information; the control execution module is connected to the whole vehicle control module and is configured to execute instructions sent by the whole vehicle control module; The maintenance switch is arranged on the instrument desk of the cab of the driver, connected with the whole vehicle control module and used for prohibiting high voltage on the vehicle when being pressed down; the cabin door proximity switch is connected with the whole vehicle control module and used for feeding back the opening and closing state of the cabin door and determining whether the cabin door is closed or opened; And the buzzer is arranged in the rear cabin and connected with the whole vehicle control module and used for prompting maintenance personnel that someone in the vehicle operates high pressure on the vehicle and alarming by ringing.
8. The high voltage power-on protection device of claim 7, wherein the vehicle control module includes a signal level for detecting a service switch to identify whether a service signal is high.
9. An electronic device comprising a processor and a memory, the processor being configured to implement the steps of the high voltage power up protection method according to any one of claims 1 to 6 when executing a computer program stored in the memory.
10. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor performs the steps of the high voltage power up protection method of any of claims 1 to 6.

Description

High-voltage power-on protection method and device, electronic equipment and medium Technical Field The invention relates to the technical field of high-voltage safety management and electronic control systems of new energy buses, in particular to a high-voltage power-on protection method, a high-voltage power-on protection device, electronic equipment and a medium. Background New energy passenger cars are used as a modern vehicle, and a power system of the new energy passenger cars is usually composed of a high-voltage battery, a motor, a control system and the like, and the parts can involve high voltage and current during operation. In the operation and maintenance process of new energy buses, high-voltage electric safety becomes a problem which cannot be ignored. Especially in the case of service and maintenance, how to ensure safety is critical for both personnel and vehicles. In a conventional high-voltage system of a new energy bus, maintenance and repair personnel usually need to manually pull out a manual Maintenance Switch (MSD) on a high-voltage junction box when operating, so as to cut off the whole high-voltage loop and prevent accidental electric shock or other safety accidents in the maintenance process. However, in actual operation, due to human factors such as negligence of operation, the manual maintenance switch may be forgotten to be pulled out, and thus the vehicle is accidentally pressurized in the maintenance process, so that the life safety of the maintenance personnel is greatly endangered. In the prior art, although a manual maintenance switch can provide a safety guarantee to a certain extent, certain defects still exist. Firstly, depending on manual operation, the safety is limited by the memory and the attention of operators, and secondly, the lack of an effective monitoring and early warning mechanism can have serious consequences once forgetting operation or improper operation. Disclosure of Invention The invention provides a high-voltage power-on protection method, a device, electronic equipment and a medium, and aims to solve the problem of unexpected high-voltage power-on caused by forgetting to operate a manual maintenance switch in the maintenance process of a new energy bus. To achieve the above object, a first aspect of the present invention provides a high-voltage power-on protection method, including the steps of: Collecting an upper high-voltage instruction and an overhaul signal sent by a cabin door proximity switch and/or a detection switch; Judging the validity of the overhaul signal when the overhaul signal and the upper high-voltage instruction are received; when the overhaul signal is effective, the whole vehicle control module drives the rear cabin buzzer to carry out audible and visual alarm, and sends a prompt signal or a fault code to the instrument, and simultaneously sends an alarm instruction to the remote monitoring terminal; and when the overhaul signal is invalid, executing the upper high-voltage flow. Furthermore, the overhaul signal sent by the acquisition cabin door approach switch is obtained by judging whether the cabin door is opened or not, and the overhaul signal sent by the acquisition detection switch is obtained by judging whether the detection switch is pressed or not. Further, the method for judging the validity of the overhaul signal comprises the following steps: determining whether the cabin door is in an open state or not through a signal acquisition pin of the cabin door proximity switch; Detecting a signal level of the overhaul switch to identify whether the overhaul signal is at a high level; and when the cabin door state is opened or the overhaul signal is high level, judging that the cabin door is valid. Further, when the vehicle is overhauled, the cabin door and the overhauling switch are closed. Further, when the upper high-voltage flow is executed, the following operations are executed: sending a cabin door opening prompt message to a vehicle instrument; Activating a rear cabin buzzer to perform audible and visual alarm; and transmitting the high-voltage alarm information to a remote monitoring terminal so as to push the alarm information to the mobile terminal through the background. Further, the alarm information is transmitted to the mobile terminal of the maintainer through the cloud platform, and an acoustic or vibration alarm is provided. To achieve the above object, a second aspect of the present invention provides a high-voltage power-on protection device, including: a power module configured to supply power to the vehicle electrical component; the whole vehicle control module is connected to the cabin door proximity switch and the overhaul switch, is configured to collect cabin door proximity switch signals to judge the cabin door switch state, provides a driving power supply to drive the buzzer to work, and judges whether to send high-voltage instructions and alarm information to each component control module accordi