New energy vehicle battery protection system and method

Abstract

The invention provides a new energy vehicle battery protection system and method.The system comprises a support, a guiding mechanism, a battery assembly, a plurality of buffering mechanisms, a moving mechanism and a connecting mechanism, and the support is arranged on a vehicle cross beam in a striding mode; the guide mechanism is arranged on the support and provided with a sliding end capable of linearly moving in the width direction of the vehicle. The battery assembly is arranged at the movable end of the guide mechanism; the plurality of buffer mechanisms are respectively arranged on two sides of the battery assembly; the moving mechanism is erected on the vehicle and provided with a movable end capable of linearly moving in the width direction of the vehicle. The connecting mechanisms are respectively arranged at the movable end of the moving mechanism and the battery assembly; when a vehicle is collided through the connecting mechanism, the moving mechanism is separated from the battery assembly, the battery assembly slides on the guide mechanism, and the buffering mechanisms on the two sides absorb impact energy and conduct buffering and damping on the battery assembly, so that the battery assembly is protected against damage, and the safety of the battery assembly in the collision accident of the vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a new energy vehicle battery protection system and method. Background Art

[0002] There are slight differences with the types of electric vehicles. In pure electric vehicles equipped only with batteries, the battery serves as the sole power source for the vehicle's drive system. In hybrid vehicles equipped with traditional engines and batteries, the battery can play both the main and auxiliary power source roles for the vehicle's drive system. It can be seen that at low speeds and when starting, the battery plays the role of the main power source for the vehicle's drive system, while at full-load acceleration it plays the role of an auxiliary power source, and during normal driving or deceleration or braking it plays the role of storing energy.

[0003] A vehicle battery mounting structure and a vehicle with publication number CN117507782A, wherein the vehicle battery mounting structure includes a frame structure, a vehicle floor and a reinforcing beam; wherein the vehicle floor is fixedly connected to the frame structure, and the outer contour matches the inner contour of the frame structure, and one side of the vehicle floor in the thickness direction is used for fixed connection with the battery; the reinforcing beam is arranged on one side of the vehicle floor for fixed connection with the battery, and the first end is fixedly connected to the frame structure, and the second end extends into the frame structure to be fixedly connected to the battery.

[0004] The battery protection system for new energy vehicles in the prior art has defects. The battery assemblies are fixedly installed on the vehicle chassis. The impact force generated when the vehicle collides can easily cause the battery assembly to be squeezed, resulting in battery damage or fire. It cannot provide effective protection, thereby reducing the safety of the battery assembly in a collision accident. Summary of the invention

[0005] In view of this, the present invention proposes a battery protection system and method for new energy vehicles. When a vehicle collides, the mobile mechanism is separated from the battery assembly through a connecting mechanism. The battery assembly slides on the guide mechanism, and the buffer mechanisms on both sides absorb the impact energy to buffer and reduce shock to the battery assembly, thereby protecting the battery assembly from damage and improving the safety of the battery assembly in a collision accident.

[0006] The technical solution of the present invention is implemented as follows: In the first aspect, the present invention provides a new energy vehicle battery protection system, including: a bracket, a guide mechanism, a battery assembly, a plurality of buffer mechanisms, a moving mechanism and a connecting mechanism, wherein:

[0007] The bracket is arranged across the cross beam of the vehicle;

[0008] The guide mechanism is arranged on the bracket, and the guide mechanism has a sliding end which can move linearly along the width direction of the vehicle;

[0009] The battery assembly is arranged on the movable end of the guide mechanism and is used to provide electric energy to the vehicle;

[0010] Multiple buffer mechanisms are arranged on both sides of the battery assembly to provide shock absorption for the battery assembly;

[0011] The moving mechanism is mounted on the vehicle and is arranged at a relative interval with the guide mechanism, and the moving mechanism has a movable end that can move linearly along the width direction of the vehicle;

[0012] The connecting mechanism is separately arranged on the movable end of the moving mechanism and the battery assembly, and is used to separate the moving mechanism from the battery assembly, so that the battery assembly slides on the guide mechanism and performs buffering and shock reduction on both sides.

[0013] On the basis of the above technical solution, preferably, the guide mechanism includes a plurality of linear guide rails and slides, wherein:

[0014] The plurality of linear guide rails are all fixed on the bracket, and the plurality of linear guide rails are arranged in parallel at intervals and on the same straight line;

[0015] A plurality of slides are respectively slidably connected to each linear guide rail, and the number and positions of the slides on both sides are the same.

[0016] On the basis of the above technical solution, preferably, the battery assembly includes multiple battery packs and corner braces, wherein the multiple corner braces are fixed at the corners of two adjacent battery packs by bolts; and at least two slides are correspondingly provided at the bottom of each battery pack, and at least two slides are symmetrically arranged, and the battery pack and the slide are fixed by bolts.

[0017] On the basis of the above technical solution, preferably, each battery pack is provided with at least two protrusions on one side close to the bracket; and each slide is provided with a recessed portion, each protrusion is inserted into the corresponding recessed portion, and the outer contour shape of the protrusion matches the inner contour shape of the recessed portion, so as to position the battery pack and the slide.

[0018] On the basis of the above technical solution, preferably, the plurality of buffer mechanisms each include an airbag and a shock absorbing assembly, wherein:

[0019] Multiple airbags are arranged on both sides of the length direction of the battery assembly and on the side away from the guide mechanism to provide buffering protection against instantaneous impact force;

[0020] A plurality of shock-absorbing components are arranged on both sides of the length direction of the battery assembly and are arranged on the side close to the guide mechanism to provide buffering protection against continuous impact force.

[0021] On the basis of the above technical solution, preferably, the plurality of shock absorbing assemblies each include a connecting member, a reinforcing member, at least two shock absorbers, at least two sliding members and a plurality of elastic members, wherein:

[0022] A plurality of connectors are arranged on both sides of the length direction of the battery assembly;

[0023] The reinforcement is fixed between two opposite linear guide rails by bolts and is perpendicular to the linear guide rails to enhance the bearing capacity of the battery pack. The reinforcement is provided with symmetrical sliding grooves.

[0024] At least two sliding members are slidably connected in the corresponding sliding grooves, and one end of the sliding member passes through and extends outside the sliding groove;

[0025] A plurality of elastic members are arranged in the slide groove, and two sides of the elastic members are respectively fixed to the sliding member and the inner wall of the slide groove;

[0026] One end of at least two shock absorbers is respectively hinged to the corresponding sliding member, and the other end is hinged to a hinge point of the connecting member.

[0027] On the basis of the above technical solution, preferably, the moving mechanism includes two pairs of fixed parts, a guide part, a rotating part, at least two moving parts, a driving gear, a matching gear and a driving part, wherein:

[0028] Both pairs of fixings are fixed in the vehicle mounting cavity;

[0029] The guide member is fixed between a pair of fixing members;

[0030] The rotating member is rotatably connected between another pair of fixed members;

[0031] At least two moving members are arranged between the guide member and the rotating member, and one end of the moving member is slidably connected to the guide member, and the other end is threadedly connected to the rotating member;

[0032] The driving gear is fixed on the outer side of the rotating member;

[0033] The matching gear is fixed on the output shaft of the driving member, and the matching gear is meshed with the driving gear; the driving member is fixed in the vehicle installation cavity.

[0034] On the basis of the above technical solution, preferably, the connecting mechanism includes a plurality of electromagnets and a plurality of positioning parts, wherein the plurality of electromagnets are arranged on each moving part, and the plurality of positioning parts are arranged on both sides of the length direction of the battery assembly and correspond to the position of the moving part, and the electromagnets are energized and adsorbed with the positioning parts to fix the battery assembly and the moving part.

[0035] On the basis of the above technical solution, preferably, it also includes multiple infrared positioning sensors, collision sensors and controllers, wherein the multiple infrared positioning sensors are arranged on the moving parts on both sides to detect the distance between the battery assembly and the moving parts, and the collision sensor is arranged on the vehicle to detect the relative speed of the collision vehicle, and the airbag and electromagnet, infrared positioning sensor and collision sensor are all electrically connected to the controller.

[0036] In a second aspect, the present invention further provides a new energy vehicle battery protection method, which is implemented by using any of the new energy vehicle battery protection systems described above, and the method comprises the following steps:

[0037] S1, setting a first impact relative speed threshold in a low-level state and a second impact relative speed threshold in a dangerous state respectively according to the controller;

[0038] S2, when the vehicle collides, the collision sensor detects the relative speed of the vehicle at the time of the collision. When the detected relative speed of the vehicle is greater than the first collision relative speed threshold and less than the second collision relative speed threshold, the controller controls the electromagnet to cut off the power, so that the battery assembly moves on the linear guide rail, and the shock absorbing components on both sides are used for buffering and shock absorption;

[0039] S3, after the accident is handled, the controller starts the driving member to make the moving members on both sides move laterally, and the electromagnetic magnet and the positioning member are positioned according to the infrared positioning sensor. The controller starts the electromagnetic magnet to power on, so that the position of the moving member and the battery assembly is fixed and restored to a normal state;

[0040] S4, when the relative speed of the detected vehicle is greater than the second impact relative speed threshold, the controller controls the electromagnet to cut off power and the airbags on both sides to explode, the battery assembly moves on the linear guide rail, and secondary buffering and shock absorption are performed through the shock absorbing components on both sides.

[0041] The new energy vehicle battery protection system and method of the present invention have the following beneficial effects compared with the prior art:

[0042] (1) When a vehicle collides, the moving mechanism is separated from the battery assembly through the connecting mechanism, and the battery assembly slides on the guide mechanism, and the buffer mechanisms on both sides absorb the impact energy, buffering and reducing the shock of the battery assembly, thereby protecting the battery assembly from damage and improving the safety of the battery assembly in a collision accident;

[0043] (2) By inserting the protrusion into the concave portion, the battery pack and the slide are precisely positioned, which not only plays a positioning role, but also enhances the connection stability between the battery pack and the slide, preventing the battery pack from shaking or shifting during the driving of the vehicle;

[0044] (3) The airbag and shock-absorbing components are provided to provide all-round protection for the battery assembly, which can not only cope with instantaneous large impact forces but also cope with continuous vibrations, thereby improving the safety and reliability of the battery assembly. At the same time, the airbag and shock-absorbing components are arranged at the top and bottom respectively, and the limited space around the battery assembly is utilized to avoid mutual interference between the two, ensuring that each can play the maximum buffering effect;

[0045] (4) The shock-absorbing assembly can be adjusted to meet the requirements of different battery assembly sizes or installation locations through the adjustment of reinforcements and shock absorbers, achieving high flexibility and adaptability and optimizing the cushioning effect;

[0046] (5) By combining the electromagnet and the positioning member, the battery assembly and the moving member are reliably fixed, and the on-off control of the electromagnet facilitates the rapid installation and removal of the battery assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 A three-dimensional diagram of a new energy vehicle battery protection system according to the present invention;

[0049] Figure 2 A three-dimensional diagram of the connection structure between the guide mechanism and the battery assembly of the battery protection system for new energy vehicles of the present invention;

[0050] Figure 3 A structural stereogram of a mobile mechanism of a new energy vehicle battery protection system of the present invention;

[0051] Figure 4 A side view of the new energy vehicle battery protection system of the present invention;

[0052] Figure 5 The new energy vehicle battery protection system of the present invention Figure 4 A partial enlarged schematic diagram in the middle;

[0053] Figure 6 A top view of the new energy vehicle battery protection system of the present invention;

[0054] Figure 7 This is a control principle block diagram of the new energy vehicle battery protection system of the present invention;

[0055] Figure 8Schematic diagram of vehicle installation of the new energy vehicle battery protection system of the present invention. Detailed implementation manners

[0056] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0057] As Figure 1-8 shown, a new energy vehicle battery protection system of the present invention includes a bracket 1, a guiding mechanism 2, a battery assembly 3, a plurality of buffer mechanisms 4, a moving mechanism 5 and a connecting mechanism 6. Among them, the bracket 1 straddles the vehicle cross beam; the guiding mechanism 2 is arranged on the bracket 1, and the guiding mechanism 2 has a sliding end that can linearly move along the vehicle width direction; the battery assembly 3 is arranged on the movable end of the guiding mechanism 2 and is used to provide electrical energy for the vehicle; a plurality of buffer mechanisms 4 are respectively arranged on both sides of the battery assembly 3 and are used to provide shock absorption for the battery assembly 3; the moving mechanism 5 is mounted on the vehicle and is arranged at a relative interval with the guiding mechanism 2, and the moving mechanism 5 has a movable end that can linearly move along the vehicle width direction; the connecting mechanism 6 is respectively arranged on the movable end of the moving mechanism 5 and the battery assembly 3 and is used to separate the moving mechanism 5 from the battery assembly 3, so that the battery assembly 3 slides on the guiding mechanism 2 and buffers and absorbs shock on both sides.

[0058] It should be noted that during the installation of the vehicle battery, first, the battery assembly 3 is hoisted onto the sliding end of the guiding mechanism 2. Then, the moving mechanism 5 is used to drive the connecting mechanism 6 to move to correspond to the position of the battery assembly 3, and the moving mechanism 5 is connected and fixed to the battery assembly 3. When the vehicle is impacted, the connecting mechanism 6 is used to separate the moving mechanism 5 from the battery assembly 3, then the battery assembly 3 slides on the guiding mechanism 2, and the buffer mechanisms 4 on both sides absorb the impact energy to buffer and shock-absorb the battery assembly 3, thereby protecting the battery assembly from damage and improving the safety of the battery assembly in a collision accident of the vehicle.

[0059] As a preferred embodiment, the guiding mechanism 2 in this embodiment includes a plurality of linear guide rails 21 and a slide table 22. Among them, the plurality of linear guide rails 21 are all fixed on the bracket 1, and the plurality of linear guide rails 21 are arranged at intervals and in parallel and are on the same straight line; the plurality of slide tables 22 are respectively slidably connected to each linear guide rail 21, and the number and positions of the slide tables 22 on both sides are the same.

[0060] It should be noted that there are two linear guides 21 in this embodiment, and the two linear guides 21 are symmetrically arranged along the vertical plane of the central axis of the bracket 1; when the battery assembly 3 needs to move, it is connected to the slide 22, and slides linearly along the width direction of the vehicle under the guidance of the linear guide 21, and due to the spaced parallel arrangement of the linear guides 21 and the symmetrical arrangement of the slide 22, the balance and stability of the battery assembly 3 during the sliding process are ensured.

[0061] As a preferred implementation, the battery assembly 3 in this embodiment includes multiple battery packs 31 and corner braces 32, wherein the multiple corner braces 32 are fixed at the corners of two adjacent battery packs 31 by bolts; and at least two slides 22 are correspondingly provided at the bottom of each battery pack 31, and at least two slides 22 are symmetrically arranged, and the battery pack 31 and the slide 22 are fixed by bolts.

[0062] It should be noted that at least two slides 22 are correspondingly provided at the bottom of each battery pack 31, and are fixed to the slides 22 by bolts, ensuring the stability of the battery pack 31 during vehicle driving and the load-bearing stability of the battery pack 31, so that the load-bearing force is distributed to each slide 22, making the operation more stable; the corner brace 32 serves as a connection and support structure between the battery packs 31, so that the multiple battery packs 31 form a whole, thereby enhancing the overall rigidity and stability of the battery assembly 3.

[0063] As a preferred embodiment, each battery pack 31 in this embodiment is provided with at least two protrusions 310 on one side close to the bracket 1; and each slide 22 is provided with an inner recess 220, and each protrusion 310 is inserted into the corresponding inner recess 220, and the outer contour shape of the protrusion 310 matches the inner contour shape of the inner recess 220, so as to position the battery pack 31 and the slide 22.

[0064] It should be noted that the outer contour shape of the protrusion 310 matches the inner recess 220 on the slide 22, and is used to be inserted into the inner recess 220 to achieve precise positioning between the battery pack 31 and the slide 22. The protrusion 310 not only plays a positioning role, but also enhances the connection stability between the battery pack 31 and the slide 22, preventing the battery pack from shaking or displacing during the driving of the vehicle.

[0065] It can be understood that when installing the battery pack 31, first align the side of the battery pack 31 close to the bracket 1 with the slide 22 so that the protrusion 310 is aligned with the recessed portion 220. Then, the battery pack 31 is gently pushed into the slide 22 so that the protrusion 310 is fully inserted into the recessed portion 220 to achieve precise positioning of the battery pack and the slide. Finally, the battery pack 31 is firmly connected to the slide 22 by bolts to ensure the stability and safety of the battery pack during vehicle driving.

[0066] As a preferred embodiment, the multiple buffer mechanisms 4 in this embodiment all include airbags 41 and shock-absorbing components 42, wherein the multiple airbags 41 are arranged on both sides of the length direction of the battery assembly 3 and are located on the side away from the guide mechanism 2, for buffering and protecting against instantaneous impact forces; the multiple shock-absorbing components 42 are arranged on both sides of the length direction of the battery assembly 3 and are located on the side close to the guide mechanism 2, for buffering and protecting against continuous impact forces.

[0067] It should be noted that the airbag 41 is mainly used to provide buffering protection against larger instantaneous impact forces; when a vehicle collides with or encounters other emergencies, the airbag can be quickly inflated and deployed to absorb and disperse the impact force, thereby protecting the battery assembly 3 from damage caused by large instantaneous impact forces. The shock absorbing component 42 is mainly used to provide buffering protection against continuous impact forces; it can effectively absorb and weaken these continuous impact forces, protecting the battery assembly 3 from damage caused by continuous vibration.

[0068] It is understandable that when the vehicle is subjected to a large instantaneous impact force of a collision, the airbag 41 will quickly inflate and expand to form a protective barrier to absorb and disperse the impact force and prevent the battery assembly 3 from being directly impacted. At the same time, the shock absorbing component 42 will exert its elastic or damping characteristics to absorb and weaken these continuous impact forces to ensure the stability and safety of the battery assembly 3. The combination of the two buffering elements, the airbag 41 and the shock absorbing component 42, provides all-round protection for the battery assembly 3, which can cope with both large instantaneous impact forces and continuous vibrations, thereby improving the safety and reliability of the battery assembly 3.

[0069] Furthermore, arranging the airbag 41 and the shock absorbing assembly 42 at the top and bottom respectively can make full use of the limited space around the battery assembly 3 to avoid mutual interference between the two, while ensuring that each can exert the maximum buffering effect.

[0070] As a preferred embodiment, the multiple shock absorbing assemblies 42 in this embodiment include a connecting member 421, a reinforcing member 422, at least two shock absorbers 423, at least two sliding members 424 and a plurality of elastic members 425, wherein the multiple connecting members 421 are arranged on both sides of the length direction of the battery assembly 3; the reinforcing member 422 is fixed between two opposite linear guides 21 by bolts and is perpendicular to the linear guides 21, and is used to strengthen the bearing capacity of the battery pack, and a symmetrical slide groove 420 is opened on the reinforcing member 422; at least two sliding members 424 are respectively slidably connected in each corresponding slide groove 420, and one end of the sliding member 424 penetrates and extends outside the slide groove 420; a plurality of elastic members 425 are arranged in the slide groove 420, and the two sides of the elastic member 425 are respectively fixed to the inner wall of the sliding member 424 and the slide groove 420; one end of at least two shock absorbers 423 is respectively hinged to the corresponding sliding member 424, and the other end is hinged to a hinge point of the connecting member 421.

[0071] It should be noted that when the battery assembly 3 is subjected to impact force from below, the impact force is transmitted to the shock absorber 423 and the sliding member 424 through the connecting member 421. The hinge points at both ends of the shock absorber 423 are on the same plane. The shock absorber 423 squeezes the sliding member 424 to slide in the slide groove 420, and compresses the elastic member 425 to absorb and buffer the impact force. The shock absorber 423 further absorbs and buffers the impact force through its elastic characteristics while maintaining a stable connection with the connecting member 421. The shock absorbing assembly 42 in this embodiment achieves effective buffering and support for the battery assembly 3 through the synergistic effect of the connecting member 421, the reinforcement 422, the shock absorber 423, the sliding member 424 and the elastic member 425, thereby further improving the safety and reliability of the battery protection system of new energy vehicles.

[0072] It is understandable that the reinforcement 422 is fixed between the two opposite linear guides 21 by bolts, and the two opposite linear guides 21 are provided with screw holes with equal spacing, which are threadedly connected in the corresponding screw holes by bolts, and the installation position of the reinforcement 422 can be adjusted according to actual needs; so that the reinforcement 422 can be adjusted along the length direction on the linear guide 21 to adapt to the size or installation position requirements of different battery assemblies 3; and when greater buffering elasticity is required, the nut can be loosened and the telescopic rod can be extended; when less buffering elasticity is required, the telescopic rod can be shortened and the nut can be tightened. This adjustment mechanism enables the shock absorber 423 to be flexibly adjusted according to the actual working conditions and impact strength to achieve the best buffering effect; and thus the shock absorbing assembly 42 in this embodiment achieves high flexibility and adaptability and optimizes the buffering effect through the adjustable design of the reinforcement 422 and the shock absorber 423.

[0073] As a preferred embodiment, the moving mechanism 5 in this embodiment includes two pairs of fixed members 51, a guide member 52, a rotating member 53, at least two moving members 54, a driving gear 55, a matching gear 56 and a driving member 57, wherein the two pairs of fixed members 51 are fixed in the vehicle installation cavity; the guide member 52 is fixed between a pair of fixed members 51; the rotating member 53 is rotatably connected between another pair of fixed members 51; at least two moving members 54 are arranged between the guide member 52 and the rotating member 53, and one end of the moving member 54 is slidably connected to the guide member 52, and the other end is threadedly connected to the rotating member 53; the driving gear 55 is fixed on the outside of the rotating member 53; the matching gear 56 is fixed on the output shaft of the driving member 57, and the matching gear 56 is meshed with the driving gear 55; the driving member 57 is fixed in the vehicle installation cavity.

[0074] Specifically, the driving member 57 in this embodiment can be a rotation driving device such as an electric motor or a hydraulic motor, which drives the matching gear 56 to rotate through the rotation of the output shaft, thereby driving the entire moving mechanism 5 to work.

[0075] It should be noted that when the driving member 57 is working, its output shaft rotates to drive the matching gear 56 to rotate, and the matching gear 56 meshes with the driving gear 55 to transmit the rotational motion to the driving gear 55; the driving gear 55 is fixed to the outside of the rotating member 53, so the rotating member 53 rotates with the driving gear 55; the rotational motion of the rotating member 53 is converted into the linear motion of the moving member 54 through a threaded connection, so that it moves along a straight line under the guidance of the guide member 52.

[0076] As a preferred embodiment, the connecting mechanism 6 in this embodiment includes a plurality of electromagnets 61 and a plurality of positioning members 62, wherein the plurality of electromagnets 61 are disposed on each movable member 54, and the plurality of positioning members 62 are disposed on a side of the battery assembly 3 away from the guide mechanism 2 and corresponding to the position of the movable member 54. When the electromagnet 61 is energized, it adsorbs the positioning member 62 to fix the battery assembly 3 and the movable member 54.

[0077] It should be noted that when the electromagnet 61 is energized, a magnetic field is generated, which produces an adsorption force with the positioning part 62, firmly fixing the battery assembly 3 on the movable part 54, thereby achieving stable installation of the battery assembly. When the electromagnet 61 is de-energized, the magnetic field disappears and the adsorption force also disappears. At this time, the battery assembly 3 can slide on the linear guide 21 when impacted. During maintenance, the battery pack 31 can be removed by unscrewing the bolts between the battery pack 31 and the slide 22, thereby conveniently achieving rapid installation and disassembly of the battery assembly.

[0078] As a preferred implementation, the present embodiment further includes a plurality of infrared positioning sensors 7, a collision sensor 8 and a controller 9, wherein the plurality of infrared positioning sensors 7 are disposed on the movable members 54 on both sides for detecting the relative position between the positioning member 62 and the movable member 54, and the collision sensor 8 is disposed on the vehicle for detecting the relative speed of the collision vehicle, and the airbag 41 and the electromagnet 61, the infrared positioning sensor 7 and the collision sensor 8 are all electrically connected to the controller 9.

[0079] It should be noted that the infrared positioning sensor 7 is used to detect the position between the battery assembly 3 and the moving part 54 in real time. By transmitting and receiving infrared signals, the sensor can accurately measure the distance and provide accurate position information for the controller 9. The collision sensor 8 is set on the vehicle to cover the possible impact area. The collision sensor 8 is used to detect the relative speed of the impacting vehicle; when the vehicle collides, the sensor can quickly sense the impact force and speed and provide an emergency signal to the controller 9.

[0080] In a second aspect, the present invention further provides a new energy vehicle battery protection method, which is implemented by using any of the new energy vehicle battery protection systems described above, and the method comprises the following steps:

[0081] S1, setting a first impact relative speed threshold in a low-level state and a second impact relative speed threshold in a dangerous state respectively according to the controller 9;

[0082] S2, when the vehicle collides, the collision sensor 8 detects the relative speed of the vehicle at the time of the collision. When the relative speed of the detected vehicle is greater than the first collision relative speed threshold and less than the second collision relative speed threshold, the controller 9 controls the electromagnet 61 to cut off the power, so that the battery assembly 3 moves on the linear guide rail 21, and the shock absorbing components 42 on both sides are used for buffering and shock absorption;

[0083] S3, after the accident is handled, the controller 9 starts the driving member 57 to make the moving members 54 on both sides move laterally, and the electromagnetic magnet 61 and the positioning member 62 are positioned according to the infrared positioning sensor 7, and the controller 9 starts the electromagnetic magnet 61 to power on, so that the position of the moving member 54 and the battery assembly 3 is fixed and restored to a normal state;

[0084] S4, when the relative speed of the detected vehicle is greater than the second impact relative speed threshold, the controller 9 controls the electromagnet 61 to cut off the power and the airbags 41 on both sides to explode, the battery assembly 3 moves on the linear guide rail 21, and performs secondary buffering and shock absorption through the shock absorbing components 42 on both sides.

[0085] Principle: According to the setting of the controller 9, the first impact relative speed threshold in the low-level state and the second impact relative speed threshold in the second dangerous state are determined to provide a judgment basis for subsequent impact detection and processing. Different protective measures are taken according to the severity of the impact. When the vehicle collides, the relative speed of the vehicle at the time of the impact is detected by the collision sensor 8. When the detected relative speed is greater than the first impact relative speed threshold and less than the second impact relative speed threshold, it is judged to be a low-level impact state. The controller 9 controls the electromagnet 61 to cut off the power, so that the battery assembly 3 moves on the linear guide rail 21 to release the impact energy. At the same time, the shock absorbing components 42 on both sides perform buffering and shock absorption to absorb the impact force. After the accident is handled, it is necessary to restore the normal state of the vehicle and the battery assembly. The controller 9 starts the driving member 57 to move the moving members 54 on both sides horizontally and adjust the position. According to the feedback of the infrared positioning sensor 7, the electromagnet 61 and the positioning member 62 are accurately positioned. The controller 9 starts the electromagnet 61 to power on, so that the position of the moving member 54 and the battery assembly 3 is fixed and restored to a normal state. When the detected relative speed of the vehicle is greater than the second impact relative speed threshold, it is judged to be a dangerous state. The controller 9 controls the electromagnet 61 to cut off the power, release the battery assembly 3, and make it move on the linear guide 21 to reduce the direct impact force. At the same time, the airbags 41 on both sides are detonated to provide additional buffering and protection to absorb the impact energy; the shock absorbing assembly 42 performs secondary buffering and shock absorption to further reduce the damage to the battery assembly and the vehicle caused by the impact, thereby achieving effective protection for the battery assembly of new energy vehicles.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new energy vehicle battery protection system, characterized in that: include: A bracket (1), a guide mechanism (2), a battery assembly (3), a plurality of buffer mechanisms (4), a moving mechanism (5) and a connecting mechanism (6), wherein: The bracket (1) is arranged across the cross beam of the vehicle; The guide mechanism (2) is arranged on the bracket (1), and the guide mechanism (2) has a sliding end that can move linearly along the width direction of the vehicle; The battery assembly (3) is arranged on the movable end of the guide mechanism (2) and is used to provide electric energy to the vehicle; A plurality of buffer mechanisms (4) are arranged on both sides of the battery assembly (3) and are used to provide shock absorption for the battery assembly (3); The moving mechanism (5) is mounted on the vehicle and is arranged at a relative interval with the guide mechanism (2), and the moving mechanism (5) has a movable end that can move linearly along the width direction of the vehicle; The connecting mechanism (6) is disposed on the movable end of the moving mechanism (5) and the battery assembly (3) and is used to separate the moving mechanism (5) from the battery assembly (3), so that the battery assembly (3) slides on the guide mechanism (2) and performs buffering and shock absorption on both sides.

2. The new energy vehicle battery protection system according to claim 1, characterized in that: The guide mechanism (2) comprises a plurality of linear guide rails (21) and a slide table (22), wherein: The plurality of linear guide rails (21) are all fixed on the bracket (1), and the plurality of linear guide rails (21) are arranged in parallel at intervals and are located on the same straight line; A plurality of slides (22) are respectively slidably connected to each linear guide rail (21), and the number and position of the slides (22) on both sides are the same.

3. The new energy vehicle battery protection system as claimed in claim 2, characterized in that: The battery assembly (3) comprises a plurality of battery packs (31) and corner braces (32), wherein the plurality of corner braces (32) are fixed at the corners of two adjacent battery packs (31) by means of bolts; and at least two slides (22) are correspondingly provided at the bottom of each battery pack (31), and the at least two slides (22) are symmetrically arranged, and the battery pack (31) and the slides (22) are fixed by means of bolts.

4. The new energy vehicle battery protection system as claimed in claim 3, characterized in that: At least two protrusions (310) are provided on one side of each battery pack (31) close to the bracket (1); and each slide (22) is provided with an inner recess (220), each protrusion (310) is inserted into the corresponding inner recess (220), and the outer contour shape of the protrusion (310) matches the inner contour shape of the inner recess (220), so as to position the battery pack (31) and the slide (22).

5. The new energy vehicle battery protection system as claimed in claim 3, characterized in that: The plurality of buffer mechanisms (4) each include a safety airbag (41) and a shock absorbing assembly (42), wherein: A plurality of safety airbags (41) are arranged on both sides of the battery assembly (3) in the length direction and are arranged on a side away from the guide mechanism (2) to provide buffering protection against instantaneous impact force; A plurality of shock absorbing components (42) are arranged on both sides of the battery assembly (3) in the length direction and are arranged on a side close to the guide mechanism (2) to provide buffering protection against continuous impact force.

6. The new energy vehicle battery protection system as claimed in claim 5, characterized in that: The plurality of shock absorbing assemblies (42) each comprises a connecting member (421), a reinforcing member (422), at least two shock absorbers (423), at least two sliding members (424) and a plurality of elastic members (425), wherein: A plurality of connecting members (421) are arranged on both sides of the battery assembly (3) in the length direction; The reinforcing member (422) is fixed between two opposite linear guide rails (21) by bolts and is perpendicular to the linear guide rails (21) to enhance the bearing capacity of the battery pack. The reinforcing member (422) is provided with symmetrical sliding grooves (420); At least two sliding members (424) are respectively slidably connected in the corresponding sliding grooves (420), and one end of the sliding member (424) passes through and extends outside the sliding groove (420); A plurality of elastic members (425) are arranged in the slide groove (420), and two sides of the elastic members (425) are respectively fixed to the sliding member (424) and the inner wall of the slide groove (420); One end of at least two shock absorbers (423) is respectively hinged to the corresponding sliding member (424), and the other end is hinged to a hinge point of the connecting member (421).

7. The new energy vehicle battery protection system as claimed in claim 5, characterized in that: The moving mechanism (5) comprises two pairs of fixed members (51), a guide member (52), a rotating member (53), at least two moving members (54), a driving gear (55), a matching gear (56) and a driving member (57), wherein: Both pairs of fixing members (51) are fixed in the vehicle installation cavity; The guide member (52) is fixed between a pair of fixing members (51); The rotating member (53) is rotatably connected between another pair of fixed members (51); At least two moving members (54) are arranged between the guide member (52) and the rotating member (53), and one end of the moving member (54) is slidably connected to the guide member (52), and the other end is threadedly connected to the rotating member (53); The driving gear (55) is fixed on the outer side of the rotating member (53); The matching gear (56) is fixed on the output shaft of the driving member (57), and the matching gear (56) is meshed with the driving gear (55); the driving member (57) is fixed in the vehicle installation cavity.

8. The new energy vehicle battery protection system as claimed in claim 7, characterized in that: The connecting mechanism (6) comprises a plurality of electromagnets (61) and a plurality of positioning members (62), wherein the plurality of electromagnets (61) are arranged on each movable member (54), and the plurality of positioning members (62) are arranged on a side of the battery assembly (3) away from the guide mechanism (2) and corresponding to the position of the movable member (54). When the electromagnets (61) are energized, they are attracted to the positioning members (62) to fix the battery assembly (3) and the movable member (54).

9. The new energy vehicle battery protection system as claimed in claim 8, characterized in that: The invention also comprises a plurality of infrared positioning sensors (7), a collision sensor (8) and a controller (9), wherein the plurality of infrared positioning sensors (7) are arranged on the moving parts (54) on both sides and are used to detect the relative position between the positioning part (62) and the moving part (54); the collision sensor (8) is arranged on the vehicle and is used to detect the relative speed of the collision vehicle; the safety airbag (41) and the electromagnet (61), the infrared positioning sensor (7) and the collision sensor (8) are all electrically connected to the controller (9).

10. A new energy vehicle battery protection method, implemented by the new energy vehicle battery protection system according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1, according to the controller (9), respectively setting a first impact relative speed threshold in a low-level state and a second impact relative speed threshold in a dangerous state; S2, when the vehicle collides, the relative speed of the vehicle at the time of the collision is detected by a collision sensor (8), and when the detected relative speed of the vehicle is greater than a first collision relative speed threshold and less than a second collision relative speed threshold, the controller (9) controls the electromagnet (61) to cut off power, so that the battery assembly (3) moves on the linear guide rail (21), and performs buffering and shock absorption through the shock absorbing components (42) on both sides; S3, after the accident is handled, the controller (9) starts the driving member (57) to move the moving members (54) on both sides horizontally, and the electromagnetic magnet (61) and the positioning member (62) are positioned according to the infrared positioning sensor (7), and the controller (9) starts the electromagnetic magnet (61) to power on, so that the position of the moving member (54) and the battery assembly (3) is fixed and restored to a normal state; S4, when the relative speed of the detected vehicle is greater than a second impact relative speed threshold, the controller (9) controls the electromagnet (61) to cut off power and the airbags (41) on both sides to explode, the battery assembly (3) moves on the linear guide rail (21), and secondary buffering and shock absorption are performed through the shock absorbing components (42) on both sides.

Images