Power battery collision protection device, method and program product

Abstract

The invention discloses a power battery collision protection device and method and a program product, and the device comprises a shell, a power battery, a lifting mechanism, a hydraulic supporting rod, an electromagnet, a collision sensor, a battery management system and a trigger switch; the collision sensor is used for detecting whether the automobile collides or not; the battery management system is used for sequentially disconnecting the battery plug connector from the power input end, contracting the hydraulic supporting rod and folding the lifting mechanism when the automobile collides and a preset safety threshold value of the battery is reached. The trigger switch is used for opening the joint of the bottom plate and the end, close to the electromagnet, of the upper cover and powering off the electromagnet when the power battery moves to a preset position. The whole device forms a protection mechanism of pre-judgment, cut-off, risk avoiding and separation, and the problem that a power battery of an existing electric automobile is prone to short circuit and fire to cause accidents when the automobile is collided is solved.

Description

Technical Field

[0001] This invention relates to the field of automotive battery technology, and in particular to a power battery collision protection device, method, and procedure. Background Technology

[0002] With the rapid development of the electric vehicle industry, its market share continues to rise, but battery safety issues are becoming increasingly prominent, becoming a key bottleneck restricting the industry's high-quality development. Currently, electric vehicle battery-related accidents occur frequently, covering various scenarios such as collisions and fires during driving and thermal runaway combustion during charging. These accidents not only cause serious property damage but also pose a significant threat to the lives of drivers, passengers, and those in the surrounding area.

[0003] Current electric vehicle battery packs are mostly integrated with the vehicle body, making them vulnerable to damage from impacts, punctures, and other external forces. This can lead to a chain of dangers, such as short circuits and fires. Furthermore, some battery protection structures are inadequately designed to effectively prevent thermal runaway, causing the danger to spread rapidly in the event of an accident. Although some models are equipped with basic protective measures, they still cannot completely eliminate the risk of battery collisions, fires, and spontaneous combustion. Summary of the Invention

[0004] The purpose of this invention is to provide a power battery collision protection device, method, and procedure product, which aims to solve the problem that the power batteries of existing electric vehicles are prone to short circuits and fires when a car is involved in a collision, causing accidents.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: In a first aspect, the present invention provides a power battery collision protection device, comprising: a housing, a power battery, a lifting mechanism, a hydraulic strut, an electromagnet, a collision sensor, a battery management system, and a trigger switch. The housing includes a top cover and a bottom plate, the top cover being closed and connected to the bottom plate to form a receiving cavity; the power battery is disposed within the receiving cavity, a battery connector is disposed on the side of the power battery near the top cover, and multiple rotating wheels are disposed on the side near the bottom plate; the battery connector is used to connect to the power input terminal of a vehicle; the lifting mechanism is disposed on the bottom plate and lifts the power battery; one end of the hydraulic strut is connected to... The upper cover is connected to the inner wall of one end, and the other end abuts against the power battery; the electromagnet is connected to the outer wall of the upper cover at the end where the hydraulic support rod is located, and is used to magnetically attract the power battery; the collision sensor is used to detect whether the car has collided; the battery management system is used to sequentially disconnect the connection between the battery connector and the power input terminal, retract the hydraulic support rod, and retract the lifting mechanism when the car has collided and the battery has reached a preset safety threshold; the trigger switch is used to open the connection between the base plate and the upper cover near the electromagnet and de-energize the electromagnet when the power battery moves to a preset position.

[0006] Furthermore, the end of the base plate away from the electromagnet is rotatably connected to the other end of the upper cover, and the trigger switch is used to rotate the base plate away from the electromagnet when the power battery moves to a preset position.

[0007] Furthermore, the top cover is provided with a clearance hole for the battery connector to pass through and connect to the power input terminal.

[0008] Furthermore, a plurality of elastic elements are evenly arranged on the side of the power battery near the top cover, and the elastic elements abut against the top cover.

[0009] Furthermore, the base plate is provided with a receiving groove, and the lifting mechanism can be retracted into the receiving groove.

[0010] Furthermore, two hydraulic struts are provided, and the two hydraulic struts respectively abut against the two ends of the power battery near the electromagnet.

[0011] Furthermore, the electromagnet, the hydraulic strut, and the power battery are at the same height relative to the base plate.

[0012] Furthermore, the power battery collision protection device also includes a distance sensor, which is disposed at the end of the base plate away from the electromagnet, and is used to detect whether the power battery has moved to a preset position.

[0013] Secondly, the present invention also provides a method for protecting a power battery from collision, applied to a power battery collision protection device, comprising: Detecting whether a car has been in a collision; When a car is involved in a collision and the battery's preset safety threshold is reached, the battery management system sequentially disconnects the battery connector from the power input terminal, retracts the hydraulic strut, and closes the lifting mechanism. When the power battery moves to the preset position, open the connection between the bottom plate and the top cover near the electromagnet and de-energize the electromagnet.

[0014] Thirdly, the present invention also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of a power battery collision protection method.

[0015] This invention provides a power battery collision protection device, method, and procedure. The device includes: a housing, a power battery, a lifting mechanism, a hydraulic strut, an electromagnet, a collision sensor, a battery management system, and a trigger switch. The housing includes a top cover and a bottom plate. The top cover is connected to the bottom plate and forms a receiving cavity. The power battery is placed in the receiving cavity. A battery connector is provided on the side of the power battery near the top cover, and multiple rotating wheels are provided on the side near the bottom plate. The battery connector is used to connect to the power input terminal of the vehicle. The lifting mechanism is placed on the bottom plate and lifts the power battery. One end of the hydraulic strut is connected to the inner wall of one end of the top cover, and the other end abuts against the power battery. The electromagnet is connected to the outer wall of the top cover at the end where the hydraulic strut is located, and is used to magnetically attract the power battery. The collision sensor is used to detect whether the vehicle has collided. The battery management system is used to sequentially disconnect the connection between the battery connector and the power input terminal, retract the hydraulic strut, and retract the lifting mechanism when the vehicle collides and reaches a preset safety threshold. The trigger switch is used to open the connection between the bottom plate and the top cover near the electromagnet and de-energize the electromagnet when the power battery moves to a preset position. This invention establishes a protective mechanism of prediction, cut-off, risk avoidance, and detachment through the entire device, which completely changes the limitations of traditional passive battery protection and solves the problem that the power batteries of existing electric vehicles are prone to short circuits and fires when a car collides, causing accidents. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the power battery collision protection device provided in an embodiment of the present invention; Figure 2 Cross-sectional view AA provided for embodiments of the present invention; Figure 3 This is a schematic diagram of the structure of a power battery provided in an embodiment of the present invention; Figure 4 This is a schematic flowchart of a power battery collision protection method provided in an embodiment of the present invention.

[0018] Explanation of the markings in the image: 1. Shell; 11. Top cover; 12. Base plate; 13. Receiving cavity; 2. Power battery; 21. Battery connector; 22. Rotary wheel; 23. Flexible component; 3. Lifting mechanism; 4. Hydraulic struts; 5. Electromagnet; 6. Distance sensor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0021] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0023] Combination Figure 1-3As shown, this invention provides a power battery collision protection device, including: a housing 1, a power battery 2, a lifting mechanism 3, a hydraulic strut 4, an electromagnet 5, a collision sensor (not shown), a battery management system (not shown), and a trigger switch (not shown). The housing 1 includes an upper cover 11 and a bottom plate 12. The upper cover 11 is fitted onto the bottom plate 12 and forms a receiving cavity 13. The power battery 2 is disposed in the receiving cavity 13. A battery connector 21 is disposed on the side of the power battery 2 near the upper cover 11, and multiple rotating wheels 22 are disposed on the side near the bottom plate 12. The battery connector 21 is used to connect to the power input terminal (not shown) of the vehicle. The lifting mechanism 3 is disposed on... The base plate 12 supports the power battery 2; one end of the hydraulic strut 4 is connected to the inner wall of one end of the top cover 11, and the other end abuts against the power battery 2; the electromagnet 5 is connected to the outer wall of the top cover 11 at the end where the hydraulic strut 4 is located, and is used to magnetically attract the power battery 2; the collision sensor is used to detect whether the car has collided; the battery management system is used to sequentially disconnect the connection between the battery connector 21 and the power input terminal, retract the hydraulic strut 4, and retract the lifting mechanism 3 when the car has collided and the battery's preset safety threshold is reached; the trigger switch is used to open the connection between the base plate 12 and the top cover 11 near the electromagnet 5 and de-energize the electromagnet 5 when the power battery 2 moves to the preset position.

[0024] In this embodiment of the invention, when the power battery 2 is in use, the lifting mechanism 3 and the hydraulic strut 4 form a stable support, ensuring that the power battery 2 remains stable during vehicle travel and ensuring continuous power supply. After a collision occurs, when the collision reaches the battery's preset safety threshold, the battery management system quickly disconnects the battery connector 21 from the power source, eliminating the risk of short circuits at the source and buying critical time for subsequent protection; the hydraulic strut 4 retracts and the lifting mechanism 3 closes, meaning the hydraulic strut 4 no longer abuts against the power battery 2 and the lifting mechanism 3 lowers the power battery 2 onto the base plate 12. The magnetic attraction of the electromagnet 5 to the power battery 2, combined with the rotating wheel 22 at the bottom of the power battery 2, allows the power battery 2 to move quickly toward the electromagnet 5, achieving active risk avoidance and preventing secondary displacement and crushing damage after the collision; the magnetic attraction of the electromagnet 5 and the controllable opening design at the connection point of the base plate 12 allow the power battery 2 to detach from the housing 1 to a safe position when it reaches the preset position. The preset position is set according to the length of the base plate 12 and the magnetic attraction force of the electromagnet 5 on the power battery 2. In actual application scenarios, the selection of the preset position can maximize the use of the magnetic attraction force of the electromagnet 5 on the power battery 2 along the direction of the base plate 12 and the tilt angle when the base plate 12 is opened, which helps the power battery 2 to detach quickly.

[0025] Understandably, the entire device constitutes a protective mechanism of prediction, cut-off, risk avoidance and detachment, which completely changes the limitations of traditional passive battery protection, thereby solving the problem that the power battery 2 of existing electric vehicles is prone to short circuit and fire when the car is in a collision, causing an accident.

[0026] It is understood that the battery preset safety threshold includes multiple indicators or different conditions. In a specific embodiment, the battery preset safety threshold includes the vehicle speed at the time of the collision reaching a preset speed, or the vehicle speed at the time of the collision not reaching the preset speed but the internal temperature of the battery collision protection device reaching a preset temperature. More specifically, the preset speed is 120 km / h. The preset speed and preset temperature can be changed according to different vehicle types and driving environments.

[0027] In some embodiments, one end of the base plate 12 away from the electromagnet 5 is rotatably connected to the other end of the top cover 11, and a trigger switch is used to rotate the base plate 12 away from the electromagnet 5 when the power battery 2 moves to a preset position.

[0028] In this embodiment, the rotatable design of the base plate 12 and its linkage with the trigger switch further optimize the protection performance. After a collision, when the battery moves to a preset position, the trigger switch drives the end of the base plate 12 away from the electromagnet 5 to rotate, forming a tilt angle to assist the battery in moving further toward the electromagnet 5, breaking the magnetic attraction of the electromagnet 5 to the power battery 2, so that the power battery 2 detaches from the housing 1 through the gap between the base plate 12 and the top cover 11 to a safe position. Specifically, the end of the base plate 12 away from the electromagnet 5 is connected to the other end of the top cover 11 via a pivot (not shown).

[0029] In some embodiments, the top cover 11 is provided with a clearance hole (not shown) for the battery connector 21 to pass through and connect to the power input terminal.

[0030] In this embodiment, the clearance hole allows the battery connector 21 to pass through the power input terminal to ensure continuous power supply when the power battery 2 is in use, and does not affect the detachment of the battery connector 21 when the lifting mechanism 3 is retracted.

[0031] In some embodiments, a plurality of elastic members 23 are evenly arranged on the side of the power battery 2 near the top cover 11, and the elastic members 23 abut against the top cover 11.

[0032] In this embodiment, the elastic element 23 can buffer the impact between the power battery 2 and the top cover 11, absorb vibration, and prevent damage from a hard collision. The even distribution of the elastic element 23 can ensure balanced force distribution and maintain the stability of the battery structure.

[0033] In some embodiments, the base plate 12 is provided with a receiving groove (not shown), and the lifting mechanism 3 can be retracted into the receiving groove.

[0034] In this embodiment, the lifting mechanism 3 is retracted into the receiving groove, which can prevent the mechanism from being exposed and deformed by impact, prevent it from squeezing the power battery 2 and causing damage and leakage, and also prevent the lifting mechanism 3 from protruding from the bottom plate 12 and affecting the movement of the bottom wheel 22 of the power battery 2.

[0035] In some embodiments, two hydraulic struts 4 are provided, and the two hydraulic struts 4 respectively abut against the two ends of the side of the power battery 2 near the electromagnet 5.

[0036] In this embodiment, two hydraulic struts 4 symmetrically abut against the two ends of one side of the power battery 2, which can provide balanced support force and avoid the battery shifting or deforming due to unilateral force.

[0037] In some embodiments, the electromagnet 5, the hydraulic strut 4, and the power battery 2 are at the same height relative to the base plate 12.

[0038] In this embodiment, the electromagnet 5, the hydraulic strut 4, and the power battery 2 are located at the same height, which ensures that the force exerted by the electromagnet 5 on the power battery 2 is completely offset by the force exerted by the hydraulic strut 4 on the power battery 2, thus preventing the power battery 2 from moving. The hydraulic strut 4 and the lifting mechanism 3 work together to form a stable support, ensuring that the power battery 2 remains in a stable position when the car is moving and bumpy, thus ensuring the continuity of power supply.

[0039] In some embodiments, the power battery collision protection device further includes: a distance sensor 6, which is disposed at the end of the base plate 12 away from the electromagnet 5, for detecting whether the power battery 2 has moved to a preset position. When the power battery 2 moves to the preset position, the distance sensor 6 sends a control signal to the trigger switch. The trigger switch receives the control signal, opens the connection between the base plate 12 and the top cover 11 near the end of the electromagnet 5, and de-energizes the electromagnet 5.

[0040] In this embodiment, the distance sensor 6 is located at the end away from the electromagnet 5, and its detection range is more in line with the movement trajectory of the power battery 2, improving the accuracy of position judgment. The distance sensor 6 can monitor the position of the power battery 2 in real time, ensuring that it sends a control signal to the trigger switch when it moves to the preset position, and the response is sensitive.

[0041] Combination Figure 4 As shown, the present invention also provides a method for protecting a power battery from collision, applied to a power battery collision protection device, comprising steps S100~S300: S100, Detecting whether a car has been in a collision; S200: When a car is involved in a collision and the battery's preset safety threshold is reached, the battery management system sequentially disconnects the battery connector 21 from the power input terminal, retracts the hydraulic strut 4, and retracts the lifting mechanism 3. S300. When the power battery 2 moves to the preset position, open the connection between the bottom plate 12 and the top cover 11 near the electromagnet 5 and de-energize the electromagnet 5.

[0042] In this embodiment of the invention, step S100, which detects whether a collision has occurred using a collision sensor, is the prediction stage of the entire protection method; step S200 is the cut-off and avoidance stage of the entire protection method; and step S300 is the disengagement stage of the entire protection method. When the power battery 2 is in use, the lifting mechanism 3 and the hydraulic strut 4 form a stable support. After a collision occurs and reaches the battery's preset safety threshold, the battery management system quickly disconnects the battery connector 21 from the power supply, eliminating the risk of short circuits at the source and buying crucial time for subsequent protection. The coordinated action of the hydraulic strut 4 retracting and the lifting mechanism 3 closing, along with the rotating wheel 22 at the bottom of the power battery 2, allows the power battery 2 to quickly move towards the electromagnet 5, achieving active avoidance and preventing secondary displacement and crushing damage after the collision. The magnetic attraction of the electromagnet 5 and the controllable opening design at the connection point with the base plate 12 allow the power battery 2 to detach from the housing 1 to a safe position when it reaches the preset position, thus solving the problem that the power battery 2 of existing electric vehicles is prone to short circuits and fires during a collision.

[0043] The present invention also provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, it implements the steps of a power battery collision protection method.

[0044] In this embodiment of the invention, the computer program product provides a reliable carrier for the implementation of the power battery collision protection method, enabling the battery management system, collision sensors and other components to form efficient linkage and ensure the automation of each step.

[0045] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A power battery collision protection device, characterized in that, include: A housing, the housing comprising a top cover and a bottom plate, the top cover being fitted onto the bottom plate and forming a receiving cavity; A power battery is disposed within the receiving cavity. A battery connector is provided on the side of the power battery near the upper cover, and multiple rotating wheels are provided on the side near the bottom plate. The battery connector is used to connect to the power input terminal of the vehicle. A lifting mechanism is mounted on the base plate and lifts the power battery; A hydraulic strut, one end of which is connected to the inner wall of one end of the upper cover, and the other end abuts against the power battery; An electromagnet is connected to the outer wall of the upper cover at one end where the hydraulic support rod is located, and is used to magnetically attract the power battery; A battery management system is used to sequentially disconnect the battery connector from the power input terminal, retract the hydraulic strut, and close the lifting mechanism when a vehicle collision occurs and a preset battery safety threshold is reached. A trigger switch is used to open the connection between the base plate and the top cover near the electromagnet and de-energize the electromagnet when the power battery moves to a preset position.

2. The power battery collision protection device according to claim 1, characterized in that, The bottom plate is rotatably connected to the other end of the top cover at one end away from the electromagnet, and the trigger switch is used to rotate the bottom plate away from the electromagnet when the power battery moves to a preset position.

3. The power battery collision protection device according to claim 1, characterized in that, The top cover is provided with a clearance hole for the battery connector to pass through and connect to the power input terminal.

4. The power battery collision protection device according to claim 1, characterized in that, The power battery has multiple elastic elements evenly arranged on the side near the top cover, and the elastic elements abut against the top cover.

5. The power battery collision protection device according to claim 1, characterized in that, The base plate is provided with a receiving groove, and the lifting mechanism can be retracted into the receiving groove.

6. The power battery collision protection device according to claim 1, characterized in that, Two hydraulic struts are provided, and the two hydraulic struts respectively abut against the two ends of the power battery near the electromagnet.

7. The power battery collision protection device according to any one of claims 1-6, characterized in that, The electromagnet, the hydraulic strut, and the power battery are at the same height relative to the base plate.

8. The power battery collision protection device according to claim 1, characterized in that, Also includes: A distance sensor is disposed at the end of the base plate away from the electromagnet, and is used to detect whether the power battery has moved to a preset position.

9. A method for protecting a power battery from collision, applied to the power battery collision protection device according to any one of claims 1-8, characterized in that, include: Detecting whether a car has been in a collision; When a car is involved in a collision and the battery's preset safety threshold is reached, the battery management system sequentially disconnects the battery connector from the power input terminal, retracts the hydraulic strut, and closes the lifting mechanism. When the power battery moves to the preset position, open the connection between the bottom plate and the top cover near the electromagnet and de-energize the electromagnet.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the power battery collision protection method described in claim 9.

Images