CN-122008871-A - Vehicle safety control system and new energy vehicle

CN122008871ACN 122008871 ACN122008871 ACN 122008871ACN-122008871-A

Abstract

The application relates to the technical field of new energy vehicles, and discloses a vehicle safety control system and a new energy vehicle. The system comprises a battery manager, an all-in-one controller and a whole vehicle controller, wherein the battery manager is used for monitoring working parameters of a vehicle battery in real time in a vehicle charging process, generating a first breaking instruction when the working parameters meet preset working conditions, the all-in-one controller is used for monitoring fault signals generated by all target components of the vehicle in real time in a vehicle starting process, generating a second breaking instruction based on the fault signals if the fault signals exist, and the whole vehicle controller is used for controlling an exciting fuse to cut off a target voltage circuit of the vehicle based on the first breaking instruction and/or the second breaking instruction after receiving the first breaking instruction and/or the second breaking instruction so as to enable the vehicle to enter a safe state. By adopting the system, active multi-source collaborative protection can be realized.

Inventors

LI HONGXING
Du Xiangdan
ZHANG CHUNGUANG
DING DING
SHAO YULONG

Assignees

郑州深澜动力科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. A vehicle safety control system, characterized by comprising: the battery manager is used for monitoring working parameters of a vehicle battery in real time in the vehicle charging process, and generating a first breaking instruction when the working parameters meet preset working conditions; The all-in-one controller is used for monitoring fault signals generated by all target components of the vehicle in real time in the starting process of the vehicle, and generating a second breaking instruction based on the fault signals if the fault signals exist; And the whole vehicle controller is used for controlling the excitation fuse to cut off the target voltage circuit of the vehicle based on the first breaking instruction and/or the second breaking instruction after receiving the first breaking instruction and/or the second breaking instruction so as to enable the vehicle to enter a safe state.
2. The system of claim 1, wherein the vehicle controller is further configured to monitor crash information collected by the crash sensor in real time, and if the crash information indicates that the vehicle reaches a preset crash level, control the excitation fuse to cut off a target voltage circuit of the vehicle so as to bring the vehicle into a safe state.
3. The system according to claim 1, wherein the vehicle controller is configured to control an excitation fuse to cut off a target voltage circuit of the vehicle based on the first breaking command and/or the second breaking command, so as to bring the vehicle into a safe state, and includes: The whole vehicle controller is used for acquiring the vehicle running gradient and the vehicle running speed of the vehicle based on the first breaking instruction and/or the second breaking instruction, and controlling the excitation fuse to cut off the target voltage circuit if the vehicle running gradient is smaller than a preset speed threshold and the vehicle running speed is smaller than the preset gradient threshold so as to enable the vehicle to enter a safe state.
4. The system of claim 1, wherein the preset operating conditions comprise a current operating condition, a voltage operating condition, a battery temperature operating condition, a resistance operating condition; The battery manager is configured to generate a first breaking instruction when the operating parameter meets at least one of any of the current operating condition, the voltage operating condition, the battery temperature operating condition, and the resistance operating condition.
5. The system of claim 4, wherein the current operating conditions comprise a plurality of levels of battery current thresholds and a plurality of levels of first duration, and wherein the operating parameters comprise real-time battery current and real-time duration; the battery manager is used for comparing the battery current threshold value of the corresponding level with the real-time battery current step by step from the initial level in the multiple levels, and comparing the first duration time of the corresponding level with the real-time duration time step by step; and stopping step-by-step comparison and generating a first breaking instruction when the real-time battery current is larger than a battery current threshold value of a corresponding level and the real-time duration is longer than a first duration of the corresponding level.
6. The system of claim 4, wherein the voltage operating conditions further comprise a battery voltage threshold and a second duration, the operating parameters comprising a real-time battery voltage, a real-time duration, a real-time contact state of a contactor, and a real-time control state of the vehicle for a charging process; The battery manager is configured to compare the real-time battery voltage with the battery voltage threshold, and compare the real-time duration with the second duration; when the real-time battery voltage is larger than the battery voltage threshold and the real-time duration is longer than the second duration, generating a first breaking instruction; The battery manager is further configured to obtain the real-time contact state and the real-time control state when the real-time battery voltage is not greater than the battery voltage threshold and/or the real-time duration is not greater than the second duration; and when the real-time contact state is an adhesion state and the real-time control state is a controllable state, generating a first breaking instruction.
7. The system of claim 4, wherein the battery temperature operating conditions further comprise a plurality of levels of battery temperature thresholds and a plurality of levels of third duration, the operating parameters comprising a real-time battery temperature and a real-time duration; The battery manager is used for comparing the battery current threshold value of the corresponding level with the real-time battery temperature step by step from the initial level in the multiple levels, and comparing the second duration time of the corresponding level with the real-time duration time step by step; And stopping step-by-step comparison when the real-time battery temperature is greater than a battery temperature threshold value of a corresponding level and the real-time duration is greater than a third duration of the corresponding level, and generating a first breaking instruction.
8. The system of claim 4, wherein the resistive operating conditions comprise a battery internal resistance threshold, a battery manager insulation resistance threshold, and wherein the operating parameters comprise a real-time battery internal resistance and a real-time battery manager insulation resistance; The battery manager is used for comparing the real-time battery internal resistance with the battery internal resistance threshold value and comparing the real-time battery manager insulation resistance with the battery manager insulation resistance threshold value; And when the real-time battery internal resistance is larger than the battery internal resistance threshold and the real-time battery manager insulation resistance is larger than the battery manager insulation resistance threshold, generating a first breaking instruction.
9. The system of claim 1, wherein the target components include motor and non-motor components; The all-in-one controller is used for monitoring fault signals generated by all target components of a vehicle in real time in the starting process of the vehicle, generating a second interruption instruction based on the fault signals if the fault signals exist, and sending the second interruption instruction to the whole vehicle controller, and comprises the following steps: The all-in-one controller is used for monitoring fault signals generated by the motor in real time in the starting process of the vehicle, and if the fault signals generated by the motor exist, determining the motor fault level of the motor of the vehicle based on the fault signals generated by the motor; when the motor fault level reaches a first preset target level, acquiring the current contact state of the contactor, and when the current contact state is an adhesion state, generating a second interruption instruction; And/or the all-in-one controller is further used for monitoring fault signals generated by the non-motor components in real time in the starting process of the vehicle, and if the fault signals generated by the non-motor components exist, determining the component fault grade of the non-motor components based on the fault signals generated by the non-motor components; And when the fault level of the component reaches a second preset target level, generating a second breaking instruction.
10. A new energy vehicle comprising the vehicle safety control system according to any one of claims 1 to 9.

Description

Vehicle safety control system and new energy vehicle Technical Field The application relates to the technical field of new energy vehicles, in particular to a vehicle safety control system and a new energy vehicle. Background The current new energy commercial vehicle commonly adopts a contactor and a traditional fuse for high-voltage protection, and has the defects that passive response only depends on overcurrent triggering and cannot identify non-overcurrent high-risk working conditions, a protection blind area is large, small current is overloaded for a long time and not fused, large current is impacted for a short time and is easy to fuse by mistake, response is lag, and the requirement of emergency power failure is difficult to meet. In summary, most of the high-voltage protection schemes of the existing new energy commercial vehicles lack multi-source state sensing capability and whole vehicle-level collaborative decision-making mechanism, and cannot realize active identification and rapid intervention of multi-dimensional risks such as battery, electric drive, whole vehicle operation and the like. Disclosure of Invention In view of the above, the embodiment of the application provides a vehicle safety control system and a new energy vehicle, which can effectively solve the technical problems that the existing new energy commercial vehicle lacks multi-source state sensing capability and a whole vehicle level collaborative decision-making mechanism, and cannot realize active identification and rapid intervention of multi-dimensional risks such as battery, electric drive, whole vehicle operation and the like. In a first aspect, an embodiment of the present application provides a vehicle safety control system, the system including: the battery manager is used for monitoring working parameters of a vehicle battery in real time in the vehicle charging process, and generating a first breaking instruction when the working parameters meet preset working conditions; The all-in-one controller is used for monitoring fault signals generated by all target components of the vehicle in real time in the starting process of the vehicle, and generating a second breaking instruction based on the fault signals if the fault signals exist; And the whole vehicle controller is used for controlling the excitation fuse to cut off the target voltage circuit of the vehicle based on the first breaking instruction and/or the second breaking instruction after receiving the first breaking instruction and/or the second breaking instruction so as to enable the vehicle to enter a safe state. In a second aspect, an embodiment of the present application provides a new energy vehicle, including the vehicle safety control system described above. The embodiment of the application has the following beneficial effects: firstly, active multi-source collaborative protection is realized, a battery manager identifies early signs of blind charging and thermal runaway in real time in charging, and an all-in-one controller accurately captures hidden faults such as insulation breakdown of a motor, adhesion of a contactor and the like in starting/running, does not depend on a single overcurrent signal any more, and obviously eliminates a protection blind area. Secondly, the response speed is increased to millisecond level, the whole vehicle controller is used as a decision center, and the whole vehicle controller directly drives and excites the fuse to act after receiving the instruction, so that the mechanical delay of the contactor and the thermal inertia of the fuse are avoided. And thirdly, improving the reliability and maintainability of the system, separating instruction generation from execution, avoiding protection incapacitation caused by single-point failure, synchronously triggering instrument alarm and cloud early warning at the same time, realizing traceability of fault reasons and closed-loop maintenance response. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a block diagram of a vehicle safety control system according to an embodiment of the present application; FIG. 2 shows a control flow diagram of a battery manager in accordance with an embodiment of the present application; FIG. 3 illustrates a control flow diagram of an all-in-one controller in accordance with an embodiment of the present application; FIG. 4 shows a control flow diagram of the vehicle controller according to the embodiment of the application; FIG. 5 shows a pre-warning flow chart of a vehicle safety control system