Vehicle window glass self-explosion method and system after new energy vehicle collision
By installing glass breakers on new energy vehicles and controlling their self-explosion upon collision, the problem of doors being unable to be opened is solved, improving vehicle safety and intelligence, and ensuring escape routes for personnel.
Patent Information
- Application Number
- CN202511570472.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2025-12-12
AI Technical Summary
After a severe collision, the doors of new energy vehicles may deform and become impossible to open, making it difficult for people to escape and causing them to miss the best rescue opportunity. Current technology cannot effectively solve this problem.
A glass breaker is installed on the vehicle window regulator. A controller moves the breaker toward the window glass and causes it to explode upon impact, ensuring an escape route for people.
It improves the safety and intelligence of new energy vehicles after a collision, reduces the risk of difficulty in rescuing people, and increases the chance of escape.
Smart Images
Figure CN121106077A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of automobile collision safety, and more specifically, to a method and system for the spontaneous explosion of vehicle window glass after a collision in a new energy vehicle. Background Technology
[0002] After a severe collision, the battery cells inside a new energy vehicle may be crushed and ruptured, causing the lithium metal in the cells to oxidize violently upon exposure to air, releasing a large amount of heat and potentially leading to thermal runaway. Alternatively, electrolyte leakage due to damage to the battery pack casing can create a flammable mixture upon contact with air, resulting in a deflagration environment. Currently, the risk of battery thermal runaway in new energy vehicles after a severe collision cannot be completely avoided, and the safety of occupants cannot be effectively guaranteed. In existing vehicles, upon receiving a collision signal from the airbag controller, the BMS (Battery Management System) immediately reports a high-level fault, disconnecting the main positive and negative battery relays and cutting off high voltage. Simultaneously, the vehicle controller also receives the collision signal, initiating an emergency power-off procedure for the BMS, MCU (Microcontroller Unit), and other high-voltage components, reporting the highest fault level, cutting off high voltage and limiting power to ensure immediate power cut-off and stopping of the vehicle after a collision, preventing fires of high-voltage components, especially battery thermal runaway. Upon receiving the collision signal, the body controller unlocks the door locks, allowing occupants to escape via the interior door handles. In reality, however, during a severe collision, the impact can cause deformation of multiple parts of the vehicle body, such as the doors and B-pillars, making it difficult for occupants to open the doors from the inside using the interior handles. Furthermore, after a violent collision, occupants may be disoriented, making it impossible to open the doors even if the door locks are unlocked, thus missing the optimal opportunity for escape, and preventing rescuers from the outside from rescuing those inside. Therefore, understanding how to control the spontaneous breakage of vehicle windows during a collision to facilitate rescue efforts and avoid missing the best escape window is of great importance. Summary of the Invention
[0003] This invention provides a method and system for the spontaneous explosion of vehicle windows after a collision in new energy vehicles. It solves the problem that in existing new energy vehicles, after a severe collision, the doors cannot be opened in time, making rescue difficult and causing people to miss the best time to escape. It can improve the safety and intelligence of new energy vehicles and reduce the risk of vehicle collisions.
[0004] To achieve the above objectives, the present invention provides the following technical solution:
[0005] A method for spontaneous breakage of vehicle window glass after a collision in a new energy vehicle includes:
[0006] A glass breaker is installed on the window regulator, and the glass breaker is raised and lowered synchronously with the vehicle window.
[0007] When a vehicle collision occurs, the vehicle controller determines whether an emergency power-off is required. If so, it controls the battery management system (BMS) and the motor controller (MCU) to enter a high-voltage power-off state.
[0008] After the body controller receives a collision signal, it controls the door lock to unlock the door and determines whether the door is open within a set time.
[0009] If not, the glass breaker is controlled to move toward the car window until it squeezes onto the edge of the glass at a predetermined position, thereby penetrating the car window and causing the tempered glass to shatter spontaneously.
[0010] Preferred options also include:
[0011] When a vehicle collision occurs, the airbag controller sends a collision signal. The vehicle controller receives the collision signal and determines the collision level. If the collision level exceeds a set threshold, it controls the battery management system (BMS) and the motor controller (MCU) to enter a high-voltage power-off state.
[0012] Preferred options also include:
[0013] When a vehicle collision occurs, the battery management system (BMS) monitors the battery temperature in real time and sends a thermal runaway signal when the battery temperature exceeds a set threshold.
[0014] When the anti-pinch controller receives the thermal runaway signal, it controls the glass breaker to drill through the car window glass, causing the tempered glass to shatter spontaneously.
[0015] Preferred options also include:
[0016] After the motor controller MCU receives a high-voltage power signal, it enters a discharge state. The power supply and forward / reverse rotation of the motor corresponding to the glass breaker are controlled by the anti-pinch controller to control its movement and drilling through the glass.
[0017] The present invention also provides a self-explosion system for vehicle window glass after a collision of a new energy vehicle, using the above-mentioned self-explosion method for vehicle window glass, including: an anti-pinch controller, a vehicle controller, a body controller, a breaking motor and a glass breaker;
[0018] The anti-pinch controller is connected to the vehicle controller and the body controller via a CAN bus.
[0019] When a vehicle collision occurs, the vehicle controller sends a collision signal via the CAN bus and determines whether an emergency power-off is required.
[0020] After receiving a collision signal, the body controller controls the door lock to unlock the door and sends a window breaking command if the door is not opened within a set time.
[0021] Upon receiving the collision signal and the window breakage command, the anti-pinch controller controls the breakage motor to rotate, thereby driving the glass breaker to break the window glass.
[0022] Preferably, it also includes: window lift switches;
[0023] The anti-pinch controller is connected to the window glass lifting switch. If the collision level is greater than a set threshold, the anti-pinch controller controls the glass breaker to break the window glass; otherwise, it controls the window glass lifting switch to lower the window.
[0024] Preferably, the crushing motor includes: a left front window crushing motor and a right front window crushing motor;
[0025] The anti-pinch controller is connected to the left front window breaking motor and the right front window breaking motor respectively. When a vehicle collision occurs and the window glass is not lowered, the controller drives the left front window breaking motor or the right front window breaking motor to drive the corresponding glass breaker to break the window glass.
[0026] Preferably, it also includes: a battery management system (BMS) and a temperature sensor;
[0027] The battery management system (BMS) is connected to the temperature sensor, which is used to detect the battery temperature of the power battery.
[0028] The battery management system (BMS) sends a thermal runaway signal when the battery temperature exceeds a set threshold.
[0029] After receiving the thermal runaway signal, the anti-pinch controller controls the glass breaker to drill through the car window glass, causing the tempered glass to shatter spontaneously.
[0030] Preferably, the glass breaker includes: a metal cone head and a moving track;
[0031] The moving track is set on the glass bracket of the glass lifter, and the metal cone head is slidably set on the moving track and rises and falls synchronously with the car window glass;
[0032] The crushing motor is driven and connected to the metal cone head, which drives the metal cone head to move along the moving track and squeeze it onto the car window glass from the end away from the glass.
[0033] Preferably, the crushing motor is mounted on the inner sheet metal of the vehicle door.
[0034] This invention provides a method and system for the spontaneous explosion of vehicle window glass after a collision in a new energy vehicle. A glass breaker is installed on the window regulator. When a collision occurs, after the vehicle controller receives a collision signal, it controls the door lock to unlock the door and determines within a set time whether the door is open. If not, the glass breaker is controlled to move towards the window glass until it reaches a predetermined position on the edge of the glass, thus penetrating the glass and causing the tempered glass to spontaneously explode. This solves the problem that in existing new energy vehicles, after a severe collision, the doors cannot be opened in time, making rescue difficult and potentially causing missed opportunities for escape. It improves the safety and intelligence of new energy vehicle use and reduces the risk of vehicle collisions. Attached Figure Description
[0035] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below.
[0036] Figure 1 This is a schematic diagram of a method for spontaneously exploding vehicle window glass after a collision, provided by the present invention.
[0037] Figure 2 This is a schematic diagram of a self-exploding window glass system for new energy vehicles after a collision, provided by the present invention.
[0038] Figure 3 This is a control schematic diagram of the anti-pinch controller provided in an embodiment of the present invention. Detailed Implementation
[0039] To enable those skilled in the art to better understand the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and implementation methods.
[0040] In response to the problem that existing new energy vehicles often have doors that cannot be opened in time after a severe collision, making rescue difficult and potentially causing people to miss the best opportunity to escape, this invention provides a method and system for the spontaneous explosion of vehicle windows after a collision in new energy vehicles. This solves the problem of existing new energy vehicles having doors that cannot be opened in time after a severe collision, making rescue difficult and potentially causing people to miss the best opportunity to escape. It can improve the safety and intelligence of new energy vehicle use and reduce the risk of vehicle collisions.
[0041] like Figure 1 As shown, a method for spontaneous breakage of a vehicle window after a collision in a new energy vehicle includes:
[0042] S1: A glass breaker is installed on the window regulator, and the glass breaker is raised and lowered synchronously with the window glass.
[0043] S2: When a vehicle collision occurs, the vehicle controller determines whether an emergency power-off is required. If so, it controls the battery management system (BMS) and the motor controller (MCU) to enter a high-voltage power-off state.
[0044] S3: After the body controller receives a collision signal, it controls the door lock to unlock the door and determines whether the door is open within a set time.
[0045] S4: If not, control the glass breaker to move toward the car window until it squeezes onto the edge of the glass at a set position, thereby penetrating the car window and causing the tempered glass to shatter spontaneously.
[0046] Specifically, a glass breaker is installed on the window regulator. The breaker itself is mounted on the window bracket of the regulator, ensuring it rises and falls with the glass. This guarantees that in the event of a collision, the breaker can break the glass at any height during the window's operation. In the event of a severe collision, the glass breaker causes the window to shatter spontaneously, allowing occupants to escape through the window if the doors cannot be opened, or facilitating rescue efforts from outside, thus increasing the chances of survival after a vehicle accident.
[0047] The method also includes: when a vehicle collision occurs, the airbag controller sends a collision signal, the vehicle controller receives the collision signal and determines the collision level, and if the collision level exceeds a set threshold, it controls the battery management system (BMS) and the motor controller (MCU) to enter a high-voltage power-off state.
[0048] In practical applications, when the speed of a new energy vehicle is less than 2 km / h and the total feedback current is less than 5A, the vehicle is in a coasting state with a small load, and can be powered down at high voltage.
[0049] The method also includes:
[0050] When a vehicle collision occurs, the battery management system (BMS) monitors the battery temperature in real time and sends a thermal runaway signal when the battery temperature exceeds a set threshold.
[0051] When the anti-pinch controller receives the thermal runaway signal, it controls the glass breaker to drill through the car window glass, causing the tempered glass to shatter spontaneously.
[0052] In practical applications, if the cells inside the power battery are squeezed and ruptured during a vehicle collision, releasing a large amount of heat, it can cause thermal runaway. At this time, the battery temperature will rise rapidly, and a thermal runaway signal will be sent when the battery temperature exceeds a set threshold.
[0053] The method further includes: after the motor controller MCU receives a high-voltage power signal, it enters a discharge state, and the power supply and forward / reverse rotation of the motor corresponding to the glass breaker are controlled by the anti-pinch controller to control its movement and drilling through the glass.
[0054] As can be seen, this invention provides a method for the spontaneous explosion of vehicle window glass after a collision in a new energy vehicle. A glass breaker is installed on the window regulator. When a collision occurs, after the vehicle controller receives a collision signal, it controls the door lock to unlock the door and determines within a set time whether the door is open. If not, the glass breaker is controlled to move towards the window glass until it reaches a predetermined position on the edge of the glass, thereby penetrating the window glass and causing the tempered glass to spontaneously explode. This solves the problem that in existing new energy vehicles, after a severe collision, the doors cannot be opened in time, making rescue difficult and potentially causing missed opportunities for escape. It improves the safety and intelligence of new energy vehicle use and reduces the risk of vehicle collisions.
[0055] Accordingly, such as Figure 2 and Figure 3 As shown, this invention also provides a self-exploding system for vehicle windows after a collision in a new energy vehicle, using the aforementioned self-exploding method for vehicle windows, comprising: an anti-pinch controller, a vehicle controller, a body controller, a breaking motor, and a glass breaker. The anti-pinch controller is connected to the vehicle controller and the body controller via a CAN bus. When a collision occurs, the vehicle controller sends a collision signal via the CAN bus and determines whether an emergency power-off is required; upon receiving the collision signal, the body controller controls the door lock to unlock the door, and if the door does not open within a set time, sends a window breaking command; upon receiving the collision signal and the window breaking command, the anti-pinch controller controls the breaking motor to rotate, thereby driving the glass breaker to break the vehicle window glass.
[0056] The system also includes: a window glass lift switch; the anti-pinch controller is signal-connected to the window glass lift switch. If the collision level is greater than a set threshold, the anti-pinch controller controls the glass breaker to break the window glass; otherwise, it controls the window glass lift switch to lower the window.
[0057] Furthermore, the breaking motor includes a left front window breaking motor and a right front window breaking motor; the anti-pinch controller is connected to the left front window breaking motor and the right front window breaking motor respectively, and drives the left front window breaking motor or the right front window breaking motor when the vehicle is involved in a collision and the window glass is not lowered, so as to drive the corresponding glass breaker to break the window glass.
[0058] The system also includes: a battery management system (BMS) and a temperature sensor; the BMS is signal-connected to the temperature sensor, which is used to detect the battery temperature of the power battery; the BMS sends a thermal runaway signal when the battery temperature exceeds a set threshold; after receiving the thermal runaway signal, the anti-pinch controller controls the glass breaker to drill through the window glass and cause the tempered glass to shatter spontaneously.
[0059] Furthermore, the glass breaker includes: a metal cone head and a moving track; the moving track is set on the glass bracket of the glass lifter, the metal cone head is slidably set on the moving track and rises and falls synchronously with the car window glass; the breaker motor is drivenly connected to the metal cone head and is used to drive the metal cone head to move along the moving track and squeeze it onto the car window glass from the end away from the glass.
[0060] In practical applications, the X and Z positions of the cone center point (in the vehicle coordinate system) can be determined by the glass edge stress test value and located in the stress concentration area at the glass edge; the crusher is powered by a motor and moves in the Y direction (in the vehicle coordinate system) on the track, that is, it squeezes the glass sheet from the end away from the glass.
[0061] Furthermore, the crushing motor is mounted on the inner sheet metal of the vehicle door.
[0062] As can be seen, this invention provides a self-exploding window glass system for new energy vehicles after a collision. A glass breaker is installed on the window regulator. When a collision occurs, after the vehicle controller receives a collision signal, it controls the door lock to unlock the door and determines within a set time whether the door is open. If not, it controls the glass breaker to move towards the window glass until it reaches a predetermined position on the edge of the glass, thus penetrating the window glass and causing the tempered glass to shatter. This solves the problem that in existing new energy vehicles, after a severe collision, the doors cannot be opened in time, making rescue difficult and potentially causing missed opportunities for escape. It improves the safety and intelligence of new energy vehicle use and reduces the risk of vehicle collisions.
[0063] The structure, features, and effects of the present invention have been described in detail above with reference to the embodiments shown in the figures. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, shall be within the protection scope of the present invention as long as they do not exceed the spirit covered by the specification and figures.
Claims
1. A method for spontaneous breakage of vehicle window glass after a collision in a new energy vehicle, characterized in that, include: A glass breaker is installed on the window regulator, and the glass breaker is raised and lowered synchronously with the vehicle window. When a vehicle collision occurs, the vehicle controller determines whether an emergency power-off is required. If so, it controls the battery management system (BMS) and the motor controller (MCU) to enter a high-voltage power-off state. After the body controller receives a collision signal, it controls the door lock to unlock the door and determines whether the door is open within a set time. If not, the glass breaker is controlled to move toward the car window until it squeezes onto the edge of the glass at a predetermined position, thereby penetrating the car window and causing the tempered glass to shatter spontaneously.
2. The method for spontaneous explosion of vehicle window glass after a collision of a new energy vehicle according to claim 1, characterized in that, Also includes: When a vehicle collision occurs, the airbag controller sends a collision signal. The vehicle controller receives the collision signal and determines the collision level. If the collision level exceeds a set threshold, it controls the battery management system (BMS) and the motor controller (MCU) to enter a high-voltage power-off state.
3. The method for spontaneous explosion of vehicle window glass after a collision of a new energy vehicle according to claim 2, characterized in that, Also includes: When a vehicle collision occurs, the battery management system (BMS) monitors the battery temperature in real time and sends a thermal runaway signal when the battery temperature exceeds a set threshold. When the anti-pinch controller receives the thermal runaway signal, it controls the glass breaker to drill through the car window glass, causing the tempered glass to shatter spontaneously.
4. The method for spontaneous explosion of vehicle window glass after a collision of a new energy vehicle according to claim 3, characterized in that, Also includes: After the motor controller MCU receives a high-voltage power signal, it enters a discharge state. The power supply and forward / reverse rotation of the motor corresponding to the glass breaker are controlled by the anti-pinch controller to control its movement and drilling through the glass.
5. A self-exploding system for vehicle windows after a collision in a new energy vehicle, using the self-exploding method for vehicle windows as described in any one of claims 1 to 4, characterized in that, include: Anti-pinch controller, vehicle controller, body controller, crushing motor and glass breaker; The anti-pinch controller is connected to the vehicle controller and the body controller via a CAN bus. When a vehicle collision occurs, the vehicle controller sends a collision signal via the CAN bus and determines whether an emergency power-off is required. After receiving a collision signal, the body controller controls the door lock to unlock the door and sends a window breaking command if the door is not opened within a set time. Upon receiving the collision signal and the window breakage command, the anti-pinch controller controls the breakage motor to rotate, thereby driving the glass breaker to break the window glass.
6. The self-exploding window glass system for new energy vehicles after a collision as described in claim 5, characterized in that, Also includes: Car window lift switch; The anti-pinch controller is connected to the window glass lifting switch. If the collision level is greater than a set threshold, the anti-pinch controller controls the glass breaker to break the window glass; otherwise, it controls the window glass lifting switch to lower the window.
7. The self-exploding window glass system for new energy vehicles after a collision as described in claim 6, characterized in that, The crushing motors include: a left front window crushing motor and a right front window crushing motor; The anti-pinch controller is connected to the left front window breaking motor and the right front window breaking motor respectively. When a vehicle collision occurs and the window glass is not lowered, the controller drives the left front window breaking motor or the right front window breaking motor to drive the corresponding glass breaker to break the window glass.
8. The self-exploding window glass system for new energy vehicles after a collision as described in claim 7, characterized in that, Also includes: Battery management system (BMS) and temperature sensors; The battery management system (BMS) is connected to the temperature sensor, which is used to detect the battery temperature of the power battery. The battery management system (BMS) sends a thermal runaway signal when the battery temperature exceeds a set threshold. After receiving the thermal runaway signal, the anti-pinch controller controls the glass breaker to drill through the car window glass, causing the tempered glass to shatter spontaneously.
9. The self-exploding window glass system for new energy vehicles after a collision as described in claim 8, characterized in that, The glass breaker includes: a metal cone head and a moving track; The moving track is set on the glass bracket of the glass lifter, and the metal cone head is slidably set on the moving track and rises and falls synchronously with the car window glass; The crushing motor is driven and connected to the metal cone head, which drives the metal cone head to move along the moving track and squeeze it onto the car window glass from the end away from the glass.
10. The self-exploding window glass system for new energy vehicles after a collision, as described in claim 9, is characterized in that... The crushing motor is mounted on the inner sheet metal of the vehicle door.