New energy automobile battery pack protection structure

Abstract

The invention relates to the technical field of automobile battery pack protection structures, in particular to a new energy automobile battery pack protection structure which comprises a protection shell and a protection box, the protection box is located in the protection shell, a sealing cover plate is fixedly mounted at the upper end of the protection box through bolts, and a mounting plate is fixedly mounted at the bottom end of the protection shell; fixing holes are formed in the four ends of the mounting plate, buffer parts are mounted between the four sides of the bottom end of the protection box and the inner end of the protection shell, and a separation groove is fixedly formed in the middle of the protection box in the left-right direction; the gypsum board can absorb smoke and heat generated when the battery is exploded, the effect of delaying the explosion time of the battery is achieved, the time that the fire behavior and other external connected power equipment are on fire together when the battery is exploded is delayed, time is won for personnel to handle in time, and the safety of the battery is improved. Certain response time and emergency danger avoiding time are reserved for a driver of the vehicle, and the safety of the driver is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile battery pack protection structures, and in particular to a new energy automobile battery pack protection structure. Background Art

[0002] New energy vehicles use power batteries as energy and are driven by electric motors. The power batteries used include valve-regulated lead-acid maintenance-free batteries, colloidal lead-acid batteries, nickel-metal hydride batteries and lithium-ion batteries. Among them, lithium batteries have the characteristics of small size, light weight, large capacity, long driving range and long life, which cater to market demand and their market share is increasing year by year.

[0003] At this stage, the battery pack is not directly installed inside the new energy vehicle, but is protected by a protective device and then installed inside the car to prevent the battery pack from being damaged by bumps or collisions when the car is driving. At present, the battery pack protection structure of the prior art usually fixes the battery pack in the protection structure, and then installs the protection structure with the battery pack in the car. However, the existing protection structure lacks a buffer mechanism. When the car is bumped and impacted, the battery pack is easily damaged, and the battery pack will quickly burn when it is damaged to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy vehicle battery pack protection structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new energy vehicle battery pack protection structure, comprising: a protection shell and a protection box, the protection box is located in the protection shell, a sealing cover plate is fixedly installed on the upper end of the protection box by bolts, a mounting plate is fixedly installed on the bottom end of the protection shell, and fixing holes are opened at the four ends of the mounting plate, buffer components are installed between the four sides of the bottom end of the protection box and the inner end of the protection shell, a partition groove is fixedly installed in the middle left and right directions of the protection box, a plurality of partitions are evenly fixedly installed at the front and rear ends of the partition groove, a placement groove is formed between the partition, the partition groove and the protection box, a plurality of heat dissipation strips are fixedly installed on the side walls of the placement groove, and a gypsum board is fixedly installed at the bottom end between two adjacent heat dissipation strips; A temperature sensor and a semiconductor cooling sheet are fixedly installed in the placement slot, a battery assembly is placed in the placement slot, cables connecting the battery assemblies are arranged in the separation slot, and a power-off component is installed between each group of battery assemblies and the cables.

[0006] Preferably, the heat dissipation strip is made of metal material, fixed on the inner wall of the partition or the protection box, and a plurality of circular holes are evenly opened on the side wall of the gypsum board.

[0007] Preferably, a controller is installed in the separation groove, and the controller is electrically connected to the temperature sensor and the semiconductor refrigeration chip respectively. Each placement groove is provided with a temperature sensor and two semiconductor refrigeration chips, one semiconductor refrigeration chip is fixed on the side wall of the separation groove, and the other semiconductor refrigeration chip is fixed on the bottom side wall of the protective box.

[0008] Preferably, the buffer component includes a connecting block and a base plate, the end of the connecting block away from the base plate is fixed to the bottom end of the protective box, the end of the connecting block close to the base plate is fixedly connected to a circular plate, a plurality of grooves are evenly arranged on the outer wall of the circular plate, a plurality of fixed blocks are evenly fixedly installed on the outer end of the connecting block, the fixed block is located directly above the groove, and a rotating groove is arranged on the outer end of the fixed block.

[0009] Preferably, one end of the base plate away from the connecting block is fixedly mounted on the inner wall of the protective shell, and a plurality of ear plates corresponding to the rotating grooves are evenly fixedly mounted on the side wall of one end of the base plate close to the connecting block, the outer end of the ear plate is rotatably connected to rotating rod 2 via a rotating shaft, the end of rotating rod 2 away from the ear plate is rotatably connected to rotating rod 1 via a rotating shaft, and the end of rotating rod 1 away from rotating rod 2 is inserted into the rotating groove and is rotatably connected via the rotating shaft.

[0010] Preferably, a damper is fixedly installed between the connecting block and the base plate, and a plurality of springs are evenly arranged on the outer end of the damper, one end of the spring is fixed to the outer wall of the base plate, and the other end is fixed to the outer wall of the circular plate.

[0011] Preferably, the power-off component includes a box body, and elastic plates are fixedly installed on the front and rear sides of the lower end of the box body, and anti-slip pads are fixedly installed on the inner sides of the two elastic plates. The two elastic plates are inserted into the front and rear ends of the partition groove by extruding themselves, and the anti-slip pads are in close contact with the outer wall of the partition groove.

[0012] Preferably, a battery box is fixedly installed at the inner end of the box body, and the inner end of the battery box is electrically connected to a rechargeable battery. An electromagnet is provided on one side of the battery box, and the electromagnet is obliquely fixed to the inner wall of the box body through a connecting rod. A switch and an indicator light are installed at the upper end of the box body, and the rechargeable battery is connected to the switch, the indicator light and the electromagnet through a guide and a wire.

[0013] Preferably, a support column and a guide plate 1 are fixedly installed in the box body, the guide plate 1 is located at the lower end of the electromagnet, and the upper end of the support column is rotatably connected to a guide plate 2 via a rotating shaft, and the guide plate 2 is located at the upper end of the guide plate 1.

[0014] Preferably, a spring 2 is fixedly mounted on one end of the guide plate 2, and the other end of the spring 2 is fixed to the inner wall of the bottom end of the box body, and the guide plate 1 and the guide plate 2 are connected to the cable of the battery assembly.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The chassis of the car shakes violently, and the battery pack and the protective box slide up and down in the protective shell by squeezing or stretching the damper and the spring to offset the vibration force on the battery pack and protect the battery pack. At the same time, under the action of the buffer component, the impact force generated by the battery explosion can be further weakened to prevent the excessive impact force generated during the explosion from splashing and colliding inside the protective shell, thereby causing greater disasters. The safety of other equipment in the vehicle cabin is ensured, and the power equipment beside it is prevented from being damaged by excessive impact force. The gypsum board can absorb the smoke and heat generated when the battery is about to explode, delaying the battery explosion time, and delaying the time for the fire to spread to other external connected electrical equipment. This buys time for personnel to deal with the situation in a timely manner, and leaves the vehicle driver with a certain amount of reaction time and emergency avoidance time, thereby protecting the driver's safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of opening the sealing cover plate on the protective box of the present invention; Figure 3 This is a schematic diagram of the lower end structure of the protection box of the present invention; Figure 4 This is a schematic diagram of the inner end structure of the protection box of the present invention; Figure 5 This is a schematic diagram of the structure of the buffer component of the present invention; Figure 6 It is a schematic diagram of the box structure of the present invention; Figure 7 It is a schematic cross-sectional view of the box body of the present invention.

[0017] In the figure: 1. protective shell; 2. mounting plate; 3. protective box; 4. connecting block; 5. round plate; 6. groove; 7. fixing block; 8. rotating groove; 9. rotating rod one; 10. rotating rod two; 11. ear plate; 12. bottom plate; 13. damper; 14. spring one; 15. partition groove; 16. temperature sensor; 17. semiconductor cooling plate; 18. partition; 19. heat dissipation strip; 20. gypsum board; 21. round hole; 22. battery assembly; 23. box body; 24. elastic plate; 25. anti-skid pad; 26. indicator light; 27. switch; 28. battery box; 29. ​​electromagnet; 30. support column; 31. guide plate one; 32. guide plate two; 33. spring two; 34. sealing cover plate. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 7 The present invention provides a technical solution: a new energy vehicle battery pack protection structure, comprising: a protective shell 1 and a protective box 3, the protective box 3 is located in the protective shell 1, the outer wall of the protective box 3 and the inner wall of the protective shell 1 are slidably connected, the protective shell 1 is made of thin steel plate, and the protective box 3 and the battery assembly 22 at the inner end are protected to prevent the battery assembly 22 from being pierced by sharp and hard objects during driving of the car, causing the battery to explode, the upper end of the protective box 3 is fixedly installed with a sealing cover plate 34 by bolts, and the bottom end of the protective shell 1 is fixedly installed with a mounting plate 2, and the four ends of the mounting plate 2 are provided with fixing holes, and the device can be fixed on the chassis of the new energy vehicle through the fixing holes.

[0020] A buffer component is installed between the four sides of the bottom end of the protection box 3 and the inner end of the protection shell 1. The buffer component includes a connecting block 4 and a bottom plate 12. The end of the connecting block 4 away from the bottom plate 12 is fixed to the bottom end of the protection box 3. The end of the connecting block 4 close to the bottom plate 12 is fixedly connected to a circular plate 5. The diameter of the circular plate 5 is larger than the diameter of the connecting block 4. A plurality of grooves 6 are evenly provided on the outer wall of the circular plate 5. A plurality of fixed blocks 7 are evenly fixedly installed on the outer end of the connecting block 4. The fixed block 7 is located directly above the groove 6. A rotating groove 8 is provided on the outer end of the fixed block 7. The end of the bottom plate 12 away from the connecting block 4 is fixed It is fixedly installed on the inner wall of the protective shell 1, and a plurality of ear plates 11 corresponding to the rotating grooves 8 are evenly fixedly installed on the side wall of one end of the bottom plate 12 close to the connecting block 4. The ear plate 11 is located directly below the groove 6, and the outer end of the ear plate 11 is rotatably connected to a rotating rod 2 10 through a rotating shaft, and the end of the rotating rod 2 10 away from the ear plate 11 is rotatably connected to a rotating rod 1 9 through a rotating shaft, and the end of the rotating rod 1 9 away from the rotating rod 2 10 is inserted into the rotating groove 8 and is rotatably connected through the rotating shaft. The rotating rod 1 9 is located at the outer end of the groove 6, and when the rotating rod 1 9 rotates, it plays a role of giving way to the rotating rod 1 9.

[0021] A damper 13 is fixedly installed between the connecting block 4 and the base plate 12. A plurality of springs 14 are evenly arranged on the outer end of the damper 13. One end of the spring 14 is fixed on the outer wall of the base plate 12, and the other end is fixed on the outer wall of the circular plate 5. The protective box 3 can slide in the protective shell 1 by squeezing the damper 13 and the spring 14. The spring 14 can quickly reset the damper 13, and the damper 13 can buffer the protective box 3.

[0022] Specifically, when the car is traveling at high speed or on an uneven surface, the chassis of the car shakes violently, and the battery pack and the protective box 3 slide up and down in the protective shell 1 by squeezing or stretching the damper 13 and the spring 14 to offset the vibration force received by the battery pack and protect the battery pack. At the same time, under the action of the buffer component, the impact force generated by the battery explosion can be further weakened to prevent the excessive impact force generated during the explosion from splashing and colliding inside the protective shell 1, thereby causing a greater disaster. The safety of other equipment in the vehicle cabin is ensured, and the power equipment next to it is avoided from being damaged by excessive impact force.

[0023] A partition groove 15 is fixedly installed in the middle left and right directions of the protection box 3, and a plurality of partitions 18 are evenly fixedly installed at the front and rear ends of the partition groove 15. A placement groove is formed between the partition 18, the partition groove 15 and the protection box 3. A plurality of heat dissipation strips 19 are fixedly installed on the side walls of the placement groove. A gypsum board 20 is fixedly installed at the bottom between two adjacent heat dissipation strips 19. The heat dissipation strips 19 are made of metal materials. The heat dissipation strips 19 are fixed on the inner wall of the partition 18 or the protection box 3. A plurality of circular holes 21 are evenly opened on the side walls of the gypsum board 20. The gypsum board 20 is made of gypsum, fiber, adhesive The gypsum board 20 is made by mixing, pressing and drying the adhesive and the modifier. It has the characteristics of fire prevention, good adsorption, heat insulation, light weight, high strength, small shrinkage, good stability, no aging, and anti-insect effects. Under the action of the circular hole 21, the smoke and heat generated when the battery is about to explode can be absorbed inside it, which has the effect of delaying the battery explosion time, and the time for the fire to catch fire with other external connected power equipment when the battery explodes is also delayed, which buys time for personnel to deal with it in time, and leaves a certain reaction time and emergency avoidance time for the driver of the vehicle to protect the safety of the driver.

[0024] When the battery assembly 22 is placed in the placement groove, the outer wall of the battery assembly 22 contacts the heat dissipation strip 19, and the heat on the battery assembly 22 is quickly conducted. A temperature sensor 16 and a semiconductor cooling sheet 17 are fixedly installed in the placement groove, and a controller is installed in the partition groove 15. The controller is electrically connected to the temperature sensor 16 and the semiconductor cooling sheet 17 respectively. Each placement groove is provided with a temperature sensor 16 and two semiconductor cooling sheets 17. One semiconductor cooling sheet 17 is fixed on the side wall of the partition groove 15, and the other semiconductor cooling sheet 17 is fixed on the bottom side wall of the protective box 3. The temperature range is input into the controller in advance. When the temperature detected by the temperature sensor 16 is higher than the set maximum temperature, the controller turns on the semiconductor cooling sheet 17 to cool the battery assembly 22. When the temperature detected by the temperature sensor 16 is lower than the set minimum temperature, the controller turns off the semiconductor cooling sheet 17.

[0025] A battery assembly 22 is placed in the placement groove, and cables connecting the battery assembly 22 are arranged in the partition groove 15. A power-off component is installed between each group of battery assemblies 22 and the cables. The power-off component includes a box body 23. Elastic plates 24 are fixedly installed on the front and rear sides of the lower end of the box body 23. Anti-slip pads 25 are fixedly installed on the inner sides of the two elastic plates 24. The two elastic plates 24 are inserted into the front and rear ends of the partition groove 15 by extruding themselves. At the same time, the anti-slip pad 25 is in close contact with the outer wall of the partition groove 15, and the box body 23 is fixed to the upper end of the partition groove 15, which is convenient for disassembly and assembly of the box body 23.

[0026] A battery box 28 is fixedly installed at the inner end of the box body 23, and a rechargeable battery is electrically connected to the inner end of the battery box 28. An electromagnet 29 is provided on one side of the battery box 28, and the electromagnet 29 is tilted and fixed to the inner wall of the box body 23 through a connecting rod. A switch 27 and an indicator light 26 are installed on the upper end of the box body 23. The rechargeable battery is connected to the switch 27, the indicator light 26 and the electromagnet 29 through a guide and a wire to form a circuit. When the switch 27 is disconnected, the wire loop is disconnected, the electromagnet 29 and the indicator light 26 are not energized, and the indicator light 26 is not lit.

[0027] A support column 30 and a guide plate 31 are fixedly installed in the box body 23. The guide plate 31 is located at the lower end of the electromagnet 29. The upper end of the support column 30 is rotatably connected to a guide plate 2 32 through a rotating shaft. The guide plate 2 32 is located at the upper end of the guide plate 1 31. One end of the guide plate 2 32 is fixedly installed with a spring 2 33, and the other end of the spring 2 33 is fixed on the inner wall of the bottom end of the box body 23. The guide plate 1 31 and the guide plate 2 32 are connected to the cable of the battery assembly 22. When the spring 2 33 is in a balanced state, the guide plate 1 31 and the guide plate 2 32 are connected, and the battery assembly 22 is connected to the outside through the cable. When the battery assembly 22 needs to be repaired or replaced, the circuit of the electromagnet 29 and the indicator light 26 is connected by turning on the switch 27, and the indicator light 26 lights up. At the same time, the electromagnet 29 generates a magnetic force to suck up the guide plate 2 32 by stretching the spring 2 33, and the guide plate 2 32 and the guide plate 1 31 are separated, so that the circuit of the battery assembly 22 is cut off to avoid the risk of electric shock by the battery.

[0028] When the device is working, when the car is driving at high speed or on an uneven ground, the chassis of the car shakes violently, and the battery pack and the protective box 3 slide up and down in the protective shell 1 by squeezing or stretching the damper 13 and the spring 14 to offset the vibration force received by the battery pack and protect the battery pack. At the same time, under the action of the buffer component, the impact force generated when the battery explodes can be further weakened to prevent splashing and collision inside the protective shell 1 due to excessive impact force generated during the explosion, so as to prevent a greater disaster from occurring, thereby ensuring the safety of other equipment inside the vehicle cabin and avoiding damage to the power equipment beside it due to excessive impact force. The gypsum board 20 can absorb the smoke and heat generated when the battery is about to explode inside it, thereby delaying the explosion time of the battery, and delaying the time when the fire spreads and other external connected power equipment catches fire together when the battery explodes, thereby buying time for personnel to deal with the fire in a timely manner and leaving the vehicle driver with a certain amount of reaction time and emergency avoidance time to protect the driver's safety.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle battery pack protection structure, comprising: A protective shell (1) and a protective box (3), wherein the protective box (3) is located inside the protective shell (1), a sealing cover plate (34) is fixedly installed on the upper end of the protective box (3) by bolts, a mounting plate (2) is fixedly installed on the bottom end of the protective shell (1), and fixing holes are provided at the four ends of the mounting plate (2), characterized in that: buffer components are installed between the four sides of the bottom end of the protective box (3) and the inner end of the protective shell (1), a partition groove (15) is fixedly installed in the middle left and right directions of the protective box (3), a plurality of partitions (18) are evenly fixedly installed at the front and rear ends of the partition groove (15), a placement groove is formed between the partition (18), the partition groove (15) and the protective box (3), a plurality of heat dissipation strips (19) are fixedly installed on the side walls of the placement groove, and a gypsum board (20) is fixedly installed at the bottom end between two adjacent heat dissipation strips (19); A temperature sensor (16) and a semiconductor cooling sheet (17) are fixedly installed in the placement groove, a battery assembly (22) is placed in the placement groove, a cable connecting the battery assembly (22) is arranged in the separation groove (15), and a power-off component is installed between each group of battery assemblies (22) and the cable.

2. A new energy vehicle battery pack protection structure according to claim 1, characterized in that: The heat dissipation strip (19) is made of metal material and is fixed to the inner wall of the partition (18) or the protection box (3). A plurality of circular holes (21) are evenly arranged on the side wall of the gypsum board (20).

3. A new energy vehicle battery pack protection structure according to claim 1, characterized in that: A controller is installed in the separation groove (15), and the controller is electrically connected to the temperature sensor (16) and the semiconductor cooling plate (17) respectively. Each placement groove is provided with a temperature sensor (16) and two semiconductor cooling plates (17), one semiconductor cooling plate (17) is fixed on the side wall of the separation groove (15), and the other semiconductor cooling plate (17) is fixed on the bottom side wall of the protection box (3).

4. A new energy vehicle battery pack protection structure according to claim 1, characterized in that: The buffer component comprises a connecting block (4) and a bottom plate (12), wherein one end of the connecting block (4) away from the bottom plate (12) is fixed to the bottom end of the protection box (3), and one end of the connecting block (4) close to the bottom plate (12) is fixedly connected to a circular plate (5), a plurality of grooves (6) are evenly arranged on the outer wall of the circular plate (5), a plurality of fixing blocks (7) are evenly fixedly installed on the outer end of the connecting block (4), the fixing blocks (7) are located directly above the grooves (6), and a rotation groove (8) is arranged on the outer end of the fixing block (7).

5. A new energy vehicle battery pack protection structure according to claim 4, characterized in that: The end of the bottom plate (12) away from the connection block (4) is fixedly mounted on the inner wall of the protective housing (1); a plurality of ear plates (11) corresponding to the rotation grooves (8) are evenly fixedly mounted on the side wall of the end of the bottom plate (12) close to the connection block (4); the outer end of the ear plate (11) is rotationally connected to the second rotation rod (10) via a rotation shaft; the end of the second rotation rod (10) away from the ear plate (11) is rotationally connected to the first rotation rod (9) via a rotation shaft; the end of the first rotation rod (9) away from the second rotation rod (10) is inserted into the rotation groove (8) and is rotationally connected via the rotation shaft.

6. A new energy vehicle battery pack protection structure according to claim 5, characterized in that: A damper (13) is fixedly installed between the connecting block (4) and the bottom plate (12), and a plurality of springs (14) are evenly arranged at the outer end of the damper (13). One end of the spring (14) is fixed to the outer wall of the bottom plate (12), and the other end is fixed to the outer wall of the circular plate (5).

7. A new energy vehicle battery pack protection structure according to claim 1, characterized in that: The power-off component comprises a box body (23), elastic plates (24) are fixedly mounted on both the front and rear sides of the lower end of the box body (23), anti-skid pads (25) are fixedly mounted on the inner sides of the two elastic plates (24), and the two elastic plates (24) are inserted into the front and rear ends of the separation groove (15) by extruding themselves, and the anti-skid pads (25) are in close contact with the outer wall of the separation groove (15).

8. A new energy vehicle battery pack protection structure according to claim 7, characterized in that: A battery box (28) is fixedly mounted on the inner end of the box body (23), and the inner end of the battery box (28) is electrically connected to a rechargeable battery. An electromagnet (29) is provided on one side of the battery box (28), and the electromagnet (29) is tiltedly fixed to the inner wall of the box body (23) through a connecting rod. A switch (27) and an indicator light (26) are mounted on the upper end of the box body (23), and the rechargeable battery is connected to the switch (27), the indicator light (26) and the electromagnet (29) through a guide and a wire.

9. A new energy vehicle battery pack protection structure according to claim 8, characterized in that: A support column (30) and a guide plate 1 (31) are fixedly installed in the box body (23). The guide plate 1 (31) is located at the lower end of the electromagnet (29). The upper end of the support column (30) is rotatably connected to a guide plate 2 (32) via a rotating shaft. The guide plate 2 (32) is located at the upper end of the guide plate 1 (31).

10. A new energy vehicle battery pack protection structure according to claim 9, characterized in that: A second spring (33) is fixedly mounted on one end of the second guide plate (32), and the other end of the second spring (33) is fixed to the inner wall of the bottom end of the box body (23). The first guide plate (31) and the second guide plate (32) are connected to the cable of the battery assembly (22).

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