CN-121989858-A - Active fracture device of suspension bracket and control method

CN121989858ACN 121989858 ACN121989858 ACN 121989858ACN-121989858-A

Abstract

The invention belongs to the technical field of automobile suspension, and discloses an active fracture device of a suspension bracket and a control method thereof, wherein the active fracture device comprises the suspension bracket, a blasting mechanism, a collision sensor, a suspension controller, an energy storage capacitor and a whole automobile controller; the suspension bracket is provided with a blasting groove, the blasting mechanism is arranged in the blasting groove, the collision sensor is arranged on the power assembly of the front cabin of the vehicle and on the inner wall of the front cabin of the vehicle, the suspension controller is respectively connected with the collision sensor, the blasting mechanism, the whole vehicle controller, the energy storage capacitor and the vehicle storage battery, the energy storage capacitor is also connected with the vehicle storage battery, and the whole vehicle controller is respectively connected with the blasting mechanism, the collision sensor and the vehicle storage battery. The invention avoids false triggering of the blasting mechanism or incapability of triggering the blasting mechanism in time by adding interaction of signals of the whole vehicle controller, redundant control of the whole vehicle controller and power supply of the independent energy storage capacitor, ensures that the suspension bracket can be broken in collision, and has the technical effect of improving the safety of the vehicle in collision.

Inventors

LI LIRUI
ZHANG HAO
Zhang Yuchuo
CAO MINGZHI
LV HONGZHI
LI MENGEN
WANG SONG
WANG ZHAOYU
FANG DAPING
ZHU JIANING
Deng Guoyunan

Assignees

奇瑞新能源汽车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260331

Claims (10)

1. The active fracture device of the suspension bracket is characterized by comprising the suspension bracket, a blasting mechanism, a collision sensor, a suspension controller, an energy storage capacitor and a whole vehicle controller; The suspension bracket is provided with a blasting groove, and the blasting mechanism is arranged in the blasting groove; the collision sensors are arranged on the power assembly of the front cabin of the vehicle and on the inner wall of the front cabin of the vehicle; The suspension controller is respectively connected with the collision sensor, the blasting mechanism, the whole vehicle controller, the energy storage capacitor and the vehicle storage battery, the energy storage capacitor is also connected with the vehicle storage battery, and the whole vehicle controller is respectively connected with the blasting mechanism, the collision sensor and the vehicle storage battery.
2. The active suspension bracket breaking device of claim 1, wherein the input signals received by the suspension controller include a vehicle front cabin collapse degree signal acquired by a collision sensor, and one or more vehicle collision related signals among a vehicle collision signal, an airbag burst signal, a seat belt pretension signal, a front radar distance signal, and a front camera ambient environment signal transmitted by the vehicle controller.
3. The active fracture device of the suspension bracket according to claim 2, wherein the coupling calculation of the suspension controller is a threshold double judgment, whether a vehicle front cabin collapse degree signal reaches a preset vehicle front cabin collapse threshold value is judged first, then whether at least one signal in the whole vehicle collision related signals reaches a corresponding preset signal threshold value is judged, and when the two judgment results are yes, the suspension controller judges that the explosion triggering condition is met and sends an explosion command to the explosion mechanism.
4. A suspension bracket active fracturing device as in claim 3 wherein said vehicle controller pre-stores the same blast trigger decision logic as said suspension controller, upon suspension controller failure, completes the blast trigger decision and sends a firing command to the blast mechanism.
5. The suspension bracket active fracturing apparatus of claim 1 wherein the storage capacitor is disposed adjacent to the suspension controller and both the storage capacitor and the suspension controller are mounted on the powertrain.
6. The active fracture device of the suspension bracket according to claim 1, wherein the blasting mechanism is arranged on one side of the suspension bracket far away from the power assembly, a plurality of fracture guide grooves are formed in the suspension bracket, and the fracture guide grooves are arranged along a fracture preset direction.
7. The active fracturing device of a suspension bracket of claim 6 wherein said fracturing guide slots are provided through along the sides of the suspension bracket.
8. A method of controlling an active suspension bracket fracture device according to any one of claims 1 to 7, comprising the steps of: The collision sensor acquires the front bin collapse degree information and transmits the front bin collapse degree information to the suspension controller and the whole vehicle controller, and the whole vehicle controller synchronously transmits the whole vehicle collision related signals to the suspension controller; The suspension controller or the whole vehicle controller carries out coupling calculation on the received signals and judges whether the blasting triggering condition is met or not; if the triggering condition is met, the suspension controller or the whole vehicle controller controls the blasting mechanism to detonate, so that the suspension bracket is broken along the breaking guide groove according to the set direction, and the power assembly is guided to sink according to the design posture.
9. The method for controlling an active fracture device of a suspension bracket according to claim 8, wherein if the suspension controller fails, the whole vehicle controller serves as a redundant control unit, acquires and judges collision signals of the collision sensor and other collision signals of the whole vehicle, and if a blasting triggering condition is met, the whole vehicle controller directly controls the blasting mechanism to detonate.
10. The method of claim 8, wherein the suspension controller is powered by the storage capacitor if the vehicle fails.

Description

Active fracture device of suspension bracket and control method Technical Field The invention belongs to the technical field of automobile suspension, and particularly relates to an active fracture device of a suspension bracket and a control method. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. When the front part of the automobile is impacted, the front part automobile body structure deforms when absorbing the impact capacity, so that the engine assembly moves backwards, occupies the riding space of the front row, and hurts the passengers of the front row. In order to solve the problem, the prior art discloses an active controllable failure suspension and suspension failure control system, wherein a blasting mechanism is arranged on a suspension support, and the blasting mechanism detonates to fracture the suspension support and enable an engine assembly to sink. The above scheme has the following defects: the control unit is powered by a whole vehicle power supply, if the voltage of the vehicle is cut off after the collision, the blasting mechanism cannot detonate due to power failure, the suspension bracket cannot be effectively broken, the power assembly is difficult to be submerged according to the design during the collision, and the hidden danger of occupant safety protection exists. Disclosure of Invention Accordingly, the present invention is directed to an active fracture device and control method for a suspension bracket, which can solve the technical problem that the suspension bracket cannot be effectively broken after a vehicle collision in the prior art. In order to achieve the above purpose, the present invention adopts the following technical scheme: In a first aspect, an active fracture device for a suspension bracket comprises the suspension bracket, a blasting mechanism, a collision sensor, a suspension controller, an energy storage capacitor and a whole vehicle controller; the suspension bracket is provided with a blasting groove, and the blasting mechanism is arranged in the blasting groove; the collision sensor is arranged on the power assembly of the front cabin of the vehicle and on the inner wall of the front cabin of the vehicle; The suspension controller is connected with the collision sensor, the blasting mechanism, the whole vehicle controller, the energy storage capacitor and the vehicle storage battery respectively, the energy storage capacitor is also connected with the vehicle storage battery, and the whole vehicle controller is connected with the blasting mechanism, the collision sensor and the vehicle storage battery respectively. Preferably, the input signals received by the suspension controller include a vehicle front cabin collapse degree signal acquired by the collision sensor, and one or more vehicle collision related signals among a vehicle collision signal, an airbag explosion signal, a seat belt pretension signal, a front radar distance signal and a front camera surrounding environment signal transmitted by the vehicle controller. Preferably, the coupling calculation of the suspension controller is a threshold value double judgment, whether the vehicle front cabin collapse degree signal reaches a preset vehicle front cabin collapse threshold value is judged firstly, whether at least one signal in the whole vehicle collision related signals reaches a corresponding preset signal threshold value is judged, and when the two judgment results are yes, the suspension controller judges that the blasting triggering condition is met and sends a blasting instruction to the blasting mechanism. Preferably, the whole vehicle controller pre-stores the same explosion triggering judgment logic as the suspension controller, and when the suspension controller fails, the explosion triggering judgment is completed and an explosion initiating instruction is sent to the explosion mechanism. Preferably, the energy storage capacitor and the suspension controller are arranged adjacently, and the energy storage capacitor and the suspension controller are both arranged on the power assembly. Preferably, the blasting mechanism is arranged on one side of the suspension bracket far away from the power assembly, a plurality of fracture guide grooves are formed in the suspension bracket, and the fracture guide grooves are arranged along the fracture preset direction. Preferably, the fracture guide groove is provided to penetrate along a side surface of the suspension bracket. In a second aspect, a control method of the active fracture device of a suspension bracket is provided, including the following procedures: the collision sensor acquires the front bin collapse degree information and transmits the front bin collapse degree information to the suspension controller and the whole vehicle controller, and the whole vehicle controller synchronously transmits a whole vehicle collision