Structure for improving strength of power battery of new energy automobile

Abstract

The invention discloses a new energy automobile power battery strength improving structure, and relates to the technical field of new energy batteries, the new energy automobile power battery strength improving structure comprises a mounting end cover and a protective outer box, the bottom end of the mounting end cover is fixedly provided with a battery bottom box, and the outer side of the protective outer box is slidably provided with a first sliding side plate and a second sliding side plate; and one side of the first sliding side plate and one side of the second sliding side plate are hinged to first damping springs through connecting rods, a linkage mechanism is arranged in the protective outer box, and an anti-scraping mechanism is arranged in a third mounting hole in the bottom end of the protective outer box. In the invention, a plurality of first sliding side plates and a plurality of second sliding side plates are in meshing transmission through bevel gears at two ends of a first mounting shaft and a second mounting shaft, and a mounting bottom plate is meshed with a second gear through a plurality of second racks, so that when any side of the periphery and the bottom end of the protective outer box is impacted, the protective outer box can be protected; and a plurality of first damping springs and second damping springs absorb impact at the same time, so that the battery module can be protected to the greatest extent.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a structure for improving the strength of a power battery for a new energy vehicle. Background Art

[0002] With the enhancement of environmental protection concepts and the development of science and technology, new energy will gradually replace the dominant position of traditional energy, which also leads to the rapid development of the new energy vehicle industry. New energy vehicles in existing technologies generally use electricity as a power source or a combination of electricity and oil, but all use batteries as a power source, and the safety of their batteries is particularly important. New energy vehicle batteries have higher requirements for impact resistance in order to protect the battery and ensure continuous and stable power output. Compared with traditional vehicles, the special characteristics of electric vehicles in collisions are reflected in the fact that high-energy, large-mass power batteries may cause fires and explosions when squeezed and damaged in collisions.

[0003] In the installation of batteries in electric vehicles, the batteries are generally installed on the chassis of the vehicle. The battery box needs to take the battery life into consideration during installation, and usually certain shock-absorbing measures are required to protect the battery box. Most existing new energy vehicles protect the batteries by installing a protective bottom plate at the bottom of the battery box, so that the batteries can be protected when hit by bumps on the ground while the vehicle is driving. However, the protection around the battery is relatively weak. Since the existing side protection is generally composed of components such as soft shells, it is not convenient to fully absorb the impact energy of external objects, which is not conducive to the existing new energy vehicle battery protection components having good anti-collision performance, resulting in the risk of internal short circuit or even fire and explosion.

[0004] Based on this, a structure for improving the strength of a power battery for new energy vehicles is now provided, which can eliminate the drawbacks of existing devices. Summary of the invention

[0005] The purpose of the present invention is to provide a structure for improving the strength of a power battery for a new energy vehicle, so as to solve the problem in the background art that the side of the battery module is not convenient for fully absorbing the impact of foreign objects.

[0006] To achieve the above object, the present invention provides the following technical solutions: A structure for improving the strength of a power battery of a new energy vehicle comprises an installation end cover and a protective outer box, wherein a battery bottom box is fixedly installed at the bottom end of the installation end cover, the battery bottom box is used to install a battery module inside, a protective inner box is fixedly installed on the outside of the battery bottom box, a fixing frame is fixedly installed at the bottom end of the installation end cover, the fixing frame is slidably arranged inside the protective outer box, the protective outer box is fixedly connected to the fixing frame by screws, a first installation hole and a second installation hole are symmetrically arranged on the outside of the protective outer box, a first sliding side plate and a second sliding side plate are slidably arranged in the first installation hole and the second installation hole, a fixing seat is symmetrically arranged on one side of the first sliding side plate and the second sliding side plate, a connecting rod is hinged on the fixing seat, the other end of the connecting rod is hinged with a first damping spring, the first damping spring is fixedly arranged on the mounting seat, the mounting seat is fixedly arranged at the bottom end of the inner part of the protective outer box, a plurality of linkage mechanisms for synchronous movement of the first sliding side plate and the second sliding side plate are arranged inside the protective outer box, a plurality of third installation holes are arranged at the bottom end of the protective outer box, and a scratch-proof mechanism for protecting the bottom end of the protective outer box is arranged in the third installation hole.

[0007] On the basis of the above technical solution, the present invention also provides the following optional technical solution: In an optional scheme: the linkage mechanism includes a first rack, a first rack is fixedly provided on one side of the first sliding side plate and the second sliding side plate, a first gear is meshed on the first rack, the first gears on one side of the first sliding side plate and the second sliding side plate are respectively fixed on the first mounting shaft and the second mounting shaft, the first mounting shaft and the second mounting shaft are both rotatably provided on a plurality of rotating plates, the rotating plates are fixedly provided at the bottom end of the protective outer box, bevel gears are fixedly provided at both ends of the first mounting shaft and the second mounting shaft, and the bevel gears at both ends of the first mounting shaft are respectively meshed with the bevel gears at one end of the two second mounting shafts.

[0008] In an optional solution: circular plates are fixedly provided at both ends of the first installation shaft and the second installation shaft, and torsion springs are provided between one side of the circular plate and one side of the rotating plate.

[0009] In an optional scheme: the anti-scratch mechanism includes an anti-scratch strip, the anti-scratch strip is slidably provided in the third mounting hole, several anti-scratch strips are fixedly provided at the bottom end of the mounting base plate, several sliding sleeves are fixedly provided at the upper end of the mounting base plate, a fixed sleeve is sleeved on the upper end of the sliding sleeve, a second damping spring is fixedly provided between the fixed sleeve and the inside of the sliding sleeve, the fixed sleeve is fixedly provided at the bottom end of the protective inner box, the bottom end of the anti-scratch strip is arranged in a circular arc, and both ends of the anti-scratch strip are chamfered.

[0010] In an optional solution: second racks are symmetrically provided at four sides of the upper end of the mounting base plate, second racks are meshed with second gears, and the second gears are fixedly provided on the first mounting shaft and the second mounting shaft respectively.

[0011] In an optional solution: a piezoelectric sensor is fixed in a fixed sleeve in the middle of the bottom end of the protective inner box, the trigger end of the piezoelectric sensor is in close contact with the output end of the spring telescopic rod, and the spring telescopic rod is fixed in a sliding sleeve in the middle of the upper end of the installation base.

[0012] In an optional solution: the first sliding side panel and the second sliding side panel are both hollow inside, reinforced gratings are fixed inside the first sliding side panel and the second sliding side panel, reinforcing rods are fixed at the four corners of the protective outer box, and the interior of the protective inner box is honeycomb-shaped.

[0013] In an optional solution: fixed tubes are symmetrically provided at both ends of the inner side of the fixed frame, limit sliders are slidably provided inside the fixed tubes, a reset spring is fixed between one end of the limit slider and the inside of the fixed tube, and limit holes are provided at corresponding positions of the protective outer box and one end of the limit slider.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention slides around the protective outer box and sets the first sliding side plate and the second sliding side plate respectively. The first sliding side plate and the second sliding side plate are connected to the working ends of the two first damping springs through a connecting rod, and the first mounting shaft and the second mounting shaft are meshed with bevel gears at both ends of the plate, so that when any side of the protective outer box is hit, the plurality of first damping springs can absorb the impact at the same time, and the mounting bottom plate is meshed with the second gear through the plurality of second racks, so that when any side of the surrounding and bottom of the protective outer box is hit, the plurality of first damping springs and the second damping springs can absorb the impact at the same time, so that the battery module can be protected to the greatest extent, and reinforcing grid plates are set inside the first sliding side plate and the second sliding side plate, and reinforcing rods are set at the four corners of the protective outer box, so that the protection strength of the battery module is increased, the overall weight of the protection structure is reduced, and the impact resistance of the first sliding side plate and the second sliding side plate is increased, so as to improve the use strength of the power battery of the new energy vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the end cover structure installed in the present invention.

[0017] Figure 3 It is a schematic diagram of the structure of the first sliding side plate of the present invention.

[0018] Figure 4 It is a schematic diagram of the structure of the second sliding side plate of the present invention.

[0019] Figure 5 It is a schematic diagram of the internal structure of the protective outer box of the present invention.

[0020] Figure 6 It is a schematic diagram of the connecting rod installation of the present invention.

[0021] Figure 7 It is a schematic diagram of the structure of the limit slider of the present invention.

[0022] Figure 8 This is a schematic diagram of the installation of the piezoelectric sensor of the present invention.

[0023] Notes on figure numbers: 11 battery bottom box, 12 mounting end cover, 13 battery module, 14 protective inner box, 15 protective outer box, 16 first sliding side plate, 17 second sliding side plate, 18 connecting rod, 19 first damping spring, 20 first rack, 21 first gear, 22 first mounting shaft, 23 second mounting shaft, 24 bevel gear, 25 torsion spring, 26 anti-scratch strip, 27 mounting bottom plate, 28 fixed sleeve, 29 sliding sleeve, 30 second damping spring, 31 second rack, 32 second gear, 33 piezoelectric sensor, 34 spring telescopic rod, 35 reinforcing rod, 36 limiting slider, 37 reset spring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1 In one embodiment, Figure 1-Figure 8As shown, a structure for improving the strength of a power battery of a new energy vehicle comprises an installation end cover 12 and a protective outer box 15, wherein a battery bottom box 11 is fixedly installed at the bottom end of the installation end cover 12, wherein the battery bottom box 11 is used to install a battery module 13, and a protective inner box 14 is fixedly installed at the outside of the battery bottom box 11, and a fixing frame is fixedly provided at the bottom end of the installation end cover 12, wherein the fixing frame is slidably arranged inside the protective outer box 15, and the protective outer box 15 is fixedly connected to the fixing frame by screws, and a first installation hole and a second installation hole are symmetrically arranged on the outside of the protective outer box 15, wherein a first sliding side plate 16 and a second sliding side plate 17 are slidably arranged in the first installation hole and the second installation hole, respectively, and a fixing seat is symmetrically provided on one side of the first sliding side plate 16 and the second sliding side plate 17, and the fixing seat A connecting rod 18 is hinged on the upper end, and a first damping spring 19 is hinged on the other end of the connecting rod 18. The first damping spring 19 is fixed on a mounting seat, and the mounting seat is fixed on the bottom end of the protective outer box 15. The protective outer box 15 is provided with a plurality of linkage mechanisms for synchronous movement of the first sliding side plate 16 and the second sliding side plate 17. The bottom end of the protective outer box 15 is provided with a plurality of third mounting holes, and the third mounting holes are provided with an anti-scratch mechanism for protecting the bottom end of the protective outer box 15. Through the linkage mechanism, when one of the first sliding side plates 16 or the second sliding side plate 17 is hit, the first damping springs 19 on the other first sliding side plates 16 and the second sliding side plates 17 can absorb the impact, and the anti-scratch mechanism is convenient for absorbing the impact on the bottom end of the protective outer box 15; The linkage mechanism includes a first rack 20, a first rack 20 is fixedly provided on one side of the first sliding side plate 16 and the second sliding side plate 17, a first gear 21 is meshed on the first rack 20, the first gear 21 on one side of the first sliding side plate 16 and the second sliding side plate 17 is respectively fixedly provided on the first mounting shaft 22 and the second mounting shaft 23, the first mounting shaft 22 and the second mounting shaft 23 are both rotatably provided on a plurality of rotating plates, the rotating plates are all fixedly provided at the bottom end inside the protective outer box 15, a bevel gear 24 is fixedly provided at both ends of the first mounting shaft 22 and the second mounting shaft 23, the bevel gears 24 at both ends of the first mounting shaft 22 are respectively meshed with the bevel gears 24 at one end of the two second mounting shafts 23, when in use, when any one of the first sliding side plate 16 or the second sliding side plate 17 is impacted by external force, the first sliding side plate 16 or the second sliding side plate 17 slides to the inside of the protective outer box 15, and ... The side plate 16 or the second sliding side plate 17 drives the first rack 20 to move, and the first rack 20 is meshed with the first gear 21, so that the first gear 21 drives the first mounting shaft 22 or the second mounting shaft 23 to rotate. Since the first mounting shaft 22 and the second mounting shaft 23 are meshed and transmitted through the bevel gear 24, the remaining first mounting shafts 22 and the second mounting shafts 23 rotate at the same time. When the first mounting shaft 22 and the second mounting shaft 23 rotate, the remaining first sliding side plates 16 and the second sliding side plates 17 all slide into the protective outer box 15, so that the first damping spring 19 is compressed under the action of the connecting rod 18. The eight first damping springs 19 absorb external force at the same time, so as to minimize the damage to the battery module 13. It is worth noting that the damping springs in the present application all adopt existing components, which are composed of shock-absorbing springs and dampers, so as to reduce the rebound of the first sliding side plate 16 and the second sliding side plate 17, and the remaining shock-absorbing components can also be used.

[0026] Circular plates are fixed at both ends of the first mounting shaft 22 and the second mounting shaft 23, and torsion springs 25 are provided between one side of the circular plate and one side of the rotating plate. When in use, when the protective outer box 15 is hit by external force and the external force is removed, the torsion springs 25 can assist the first mounting shaft 22 and the second mounting shaft 23 to rotate to the initial state. At the same time, when the protective outer box 15 is hit, the torsion springs 25 can absorb part of the external force.

[0027] The anti-scratch mechanism includes an anti-scratch strip 26, and the anti-scratch strip 26 is slidably provided in the third mounting hole. Several of the anti-scratch strips 26 are fixedly provided at the bottom end of the mounting base plate 27, and several sliding sleeves 29 are fixedly provided at the upper end of the mounting base plate 27. A fixed sleeve 28 is sleeved on the upper end of the sliding sleeve 29, and a second damping spring 30 is fixedly provided between the fixed sleeve 28 and the sliding sleeve 29. The fixed sleeve 28 is fixedly provided at the bottom end of the protective inner box 14, and the bottom end of the anti-scratch strip 26 is set in an arc, and both ends of the anti-scratch strip 26 are chamfered. When in use, during installation, the battery bottom box 11 is installed at the bottom mounting position of the vehicle, and the anti-scratch strip 26 is installed along the driving direction of the vehicle. When the vehicle is hit by a protrusion on the ground, the anti-scratch strip 26 slides to the inside of the protective outer box 15, and several second damping springs 30 at the upper end of the mounting base plate 27 can absorb the impact at the same time.

[0028] The four sides of the upper end of the mounting base 27 are symmetrically provided with second racks 31, and the second racks 31 are meshed with second gears 32. The second gears 32 are respectively fixed on the first mounting shaft 22 and the second mounting shaft 23. When in use, when any anti-scratch strip 26 is hit, the anti-scratch strip 26 pushes the mounting base 27 to move, and the mounting base 27 drives a plurality of second racks 31. The second racks 31 are meshed with the second gears 32 to drive the first mounting shaft 22 and the second mounting shaft 23 to rotate, so that a plurality of first damping springs 19 and second damping springs 30 absorb the impact at the same time.

[0029] A piezoelectric sensor 33 is fixed in the fixed sleeve 28 in the middle of the bottom end of the protective inner box 14. The trigger end of the piezoelectric sensor 33 is in close contact with the output end of the spring telescopic rod 34. The spring telescopic rod 34 is fixed in the sliding sleeve 29 in the middle of the upper end of the mounting base 27. When in use, when any of the first sliding side plate 16, the second sliding side plate 17 and the anti-scratch strip 26 are hit, the mounting base 27 will move, and the mounting base 27 drives the spring telescopic rod 34 to move, so that the output end of the spring telescopic rod 34 applies pressure to the trigger end of the piezoelectric sensor 33. The piezoelectric sensor 33 is electrically connected to the external control component, which makes it easy for the user to understand the impact intensity. At the same time, the piezoelectric sensor 33 uses existing components.

[0030] The first sliding side panels 16 and the second sliding side panels 17 are both hollow inside, and reinforcing gratings are fixed inside the first sliding side panels 16 and the second sliding side panels 17. Reinforcing rods 35 are fixed at the four corners of the protective outer box 15. The interior of the protective inner box 14 is honeycomb-shaped. When in use, reinforcing gratings are provided in the middle of the first sliding side panels 16 and the second sliding side panels 17, so that the weight of the first sliding side panels 16 and the second sliding side panels 17 is reduced during use, and the use strength of the first sliding side panels 16 and the second sliding side panels 17 is increased, so that the first sliding side panels 16 and the second sliding side panels 17 can withstand greater impacts. Reinforcing rods 35 are provided at the four corners of the protective outer box 15 to increase the use strength of the corners of the protective outer box 15. At the same time, the interior of the protective inner box 14 is honeycomb-shaped, so that the weight of the protective inner box 14 can be reduced and the use strength of the protective inner box 14 can be increased.

[0031] Example 2 The difference from Example 1 is that: fixed tubes are symmetrically provided at both ends of the inner side of the fixed frame, and limit sliders 36 are slidably provided inside the fixed tubes. A return spring 37 is fixedly provided between one end of the limit slider 36 and the inside of the fixed tube, and limit holes are provided at the corresponding positions of the protective outer box 15 and one end of the limit slider 36. When in use, when installing the protective outer box 15, first slide the fixed frame on the inside of the protective outer box 15, and the protective outer box 15 pushes the limit slider 36 into the fixed tube. When the upper end of the protective outer box 15 is tightly attached to the bottom end of the installation end cover 12, under the action of the return spring 37, one end of the limit slider 36 is inserted into the limit hole, so that the protective outer box 15 is pre-fixed, and then the protective outer box 15 can be fixed. At the same time, during use, the protective outer box 15 can be prevented from falling off.

[0032] The above embodiment discloses a structure for improving the strength of a power battery of a new energy vehicle, wherein when any one of the first sliding side plates 16 or the second sliding side plates 17 is hit by an external force during driving of the vehicle, the first sliding side plate 16 or the second sliding side plate 17 slides into the inside of the protective outer box 15, and at the same time, the first sliding side plate 16 or the second sliding side plate 17 drives the first rack 20 to move, and the first rack 20 is meshed with the first gear 21, so that the first gear 21 drives the first installation shaft 22 or the second installation shaft 23 to rotate. Since the first installation shaft 22 and the second installation shaft 23 are meshed and driven by the bevel gear 24, the remaining first installation shafts 22 and the second installation shafts 23 rotate at the same time. When the first installation shaft 22 and the second installation shaft 23 rotate, , the remaining first sliding side plates 16 and second sliding side plates 17 all slide into the protective outer box 15, so that the first damping spring 19 is compressed under the action of the connecting rod 18, and the eight first damping springs 19 absorb external force at the same time. At the same time, when the first mounting shaft 22 and the second mounting shaft 23 rotate, the second gear 32 is driven to rotate. The second gear 32 is engaged with the second rack 31, so that a plurality of anti-scratch strips 26 are driven to slide into the protective outer box 15, so that a plurality of second damping springs 30 are compressed, so that a plurality of first damping springs 19 and second damping springs 30 absorb impact at the same time. Similarly, when any anti-scratch strip 26 is hit by the ground, a plurality of first damping springs 19 and second damping springs 30 can also absorb the impact at the same time.

[0033] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A structure for improving the strength of a power battery of a new energy vehicle, comprising an installation end cover (12) and a protective outer box (15), wherein a battery bottom box (11) is fixedly installed at the bottom end of the installation end cover (12), the interior of the battery bottom box (11) is used to install a battery module (13), a protective inner box (14) is fixedly installed on the outside of the battery bottom box (11), a fixing frame is fixedly installed at the bottom end of the installation end cover (12), the fixing frame is slidably arranged inside the protective outer box (15), and the protective outer box (15) is fixedly connected to the fixing frame by screws, characterized in that: The outer side of the protective outer box (15) is symmetrically provided with a first mounting hole and a second mounting hole, and a first sliding side plate (16) and a second sliding side plate (17) are slidably provided in the first mounting hole and the second mounting hole respectively. A fixing seat is symmetrically provided on one side of the first sliding side plate (16) and the second sliding side plate (17), and a connecting rod (18) is hinged on the fixing seat, and a first damping spring (19) is hinged on the other end of the connecting rod (18), and the first damping spring (19) is fixed on the mounting seat, and the mounting seat is fixed at the bottom end of the protective outer box (15). The protective outer box (15) is provided with a plurality of linkage mechanisms for synchronous movement of the first sliding side plate (16) and the second sliding side plate (17), and the bottom end of the protective outer box (15) is provided with a plurality of third mounting holes, and a scratch-proof mechanism for protecting the bottom end of the protective outer box (15) is provided in the third mounting holes.

2. A structure for improving the strength of a new energy vehicle power battery according to claim 1, characterized in that: The linkage mechanism comprises a first rack (20), one side of the first sliding side plate (16) and the second sliding side plate (17) are both fixedly provided with the first rack (20), the first gear (21) is meshed with the first rack (20), the first gear (21) on one side of the first sliding side plate (16) and the second sliding side plate (17) are respectively fixedly provided on the first mounting shaft (22) and the second mounting shaft (23), the first mounting shaft (22) and the second mounting shaft (23) are both rotatably provided on a plurality of rotating plates, the rotating plates are both fixedly provided on the bottom end of the protective outer box (15), both ends of the first mounting shaft (22) and the second mounting shaft (23) are both fixedly provided with bevel gears (24), the bevel gears (24) at both ends of the first mounting shaft (22) are respectively meshed with the bevel gears (24) at one end of the two second mounting shafts (23).

3. A structure for improving the strength of a new energy vehicle power battery according to claim 2, characterized in that: Circular plates are fixedly provided at both ends of the first installation shaft (22) and the second installation shaft (23), and torsion springs (25) are provided between one side of the circular plate and one side of the rotating plate.

4. A structure for improving the strength of a new energy vehicle power battery according to claim 3, characterized in that: The anti-scratch mechanism comprises an anti-scratch strip (26), the anti-scratch strip (26) is slidably arranged in each of the third mounting holes, a plurality of the anti-scratch strips (26) are fixedly arranged at the bottom end of the mounting base plate (27), a plurality of sliding sleeves (29) are fixedly arranged at the upper end of the mounting base plate (27), a fixed sleeve (28) is sleeved at the upper end of the sliding sleeve (29), a second damping spring (30) is fixedly arranged between the fixed sleeve (28) and the inside of the sliding sleeve (29), the fixed sleeve (28) is fixedly arranged at the bottom end of the protective inner box (14), the bottom end of the anti-scratch strip (26) is arranged in an arc shape, and both ends of the anti-scratch strip (26) are arranged with chamfers.

5. The structure for improving the strength of a new energy vehicle power battery according to claim 4, characterized in that: Second racks (31) are symmetrically arranged at four sides of the upper end of the mounting base plate (27), and second gears (32) are meshed on the second racks (31). The second gears (32) are fixedly arranged on the first mounting shaft (22) and the second mounting shaft (23), respectively.

6. A structure for improving the strength of a new energy vehicle power battery according to claim 5, characterized in that: A piezoelectric sensor (33) is fixedly arranged in a fixed sleeve (28) in the middle of the bottom end of the protective inner box (14); a trigger end of the piezoelectric sensor (33) is in close contact with an output end of a spring telescopic rod (34); and the spring telescopic rod (34) is fixedly arranged in a sliding sleeve (29) in the middle of the upper end of the mounting base plate (27).

7. The structure for improving the strength of a new energy vehicle power battery according to claim 1, characterized in that: The first sliding side plate (16) and the second sliding side plate (17) are both hollow in interior, and reinforced gratings are fixedly provided in the interior of the first sliding side plate (16) and the second sliding side plate (17). Reinforcement rods (35) are fixedly provided at the four corners of the protective outer box (15), and the interior of the protective inner box (14) is honeycomb-shaped.

8. The structure for improving the strength of a new energy vehicle power battery according to claim 1, characterized in that: Fixed tubes are symmetrically arranged at both ends of the inner side of the fixed frame, and limit slide blocks (36) are slidably arranged inside the fixed tubes. A return spring (37) is fixedly arranged between one end of the limit slide block (36) and the inside of the fixed tube, and limit holes are arranged at positions corresponding to the positions of one end of the protective outer box (15) and the limit slide block (36).

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