Lower shell structure of energy storage device for electric automobile

Abstract

The utility model discloses a lower shell structure of an energy storage device for an electric automobile, which comprises a fixing frame and a mounting shell which are arranged at the bottom end of the electric automobile, reinforcing ribs are fixedly connected inside the mounting shell, the reinforcing ribs divide the inside of the mounting shell into a plurality of fixing grooves for fixing a storage battery, and the fixing grooves are fixedly connected with the fixing frame. Fixing strips are fixedly connected to the upper side of the left end and the upper side of the right end of the mounting shell, clamping grooves are formed in the two fixing strips, fixing mechanisms are arranged at the positions, corresponding to the clamping grooves, of the fixing frame, a protective shell is connected to the bottom end of the mounting shell through a plurality of connecting mechanisms, and a foam buffering sleeve is fixedly connected to the interior of the protective shell; and the inner side wall of the foam buffer sleeve is tightly attached to the outer side wall of the mounting shell, so that the foam buffer sleeve is convenient to mount and dismount, the impact force on the mounting shell can be relieved, the mounting shell is effectively prevented from being deformed and damaged, the effect of protecting the storage battery is achieved, and the use practicability of the storage battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle battery systems, and more specifically, to a lower shell structure of an energy storage device for an electric vehicle. Background Art

[0002] With the country's vigorous promotion of the new energy field, electric vehicles have become the mainstream trend in the future. Among them, the power battery pack can be said to be the heart of electric vehicles, providing power for electric vehicles. As an assembly component of the whole vehicle, the battery pack must ensure the safety of battery installation during the assembly of the battery pack and the whole vehicle, while considering the installation operability. Therefore, the importance of the installation method and installation structure of the battery pack cannot be ignored. The whole package layout of the power battery pack includes structural parts, modules, electrical components, thermal management components and battery management system, among which the lower shell has the functions of supporting the weight of the entire battery pack, providing the battery pack and the whole vehicle installation point, and protecting the internal safety of the battery. The safety of the lower shell of the power battery is directly related to and affects the safety of the entire electric vehicle.

[0003] The lower shell of a traditional energy storage device assembly is usually manufactured by stamping, welding and painting sheet metal parts, and is installed under the vehicle body by multiple bolts. In order to ensure the stability of the lower shell of the energy storage device for electric vehicles, a large number of bolts need to be installed. Therefore, it takes a lot of time to assemble and disassemble the lower shell of the energy storage device, which reduces the efficiency of its disassembly and assembly. In addition, since the energy storage device of the electric vehicle is installed at the bottom of the vehicle, objects may hit the lower shell of the energy storage device during the driving of the electric vehicle. The lower shell of the energy storage device will be deformed and damaged after the impact, which will cause damage to the battery inside the lower shell of the energy storage device. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the problems existing in the prior art, the utility model provides a lower shell structure of an energy storage device for an electric vehicle to solve the technical problems mentioned in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lower shell structure of an energy storage device for an electric vehicle, comprising a fixing frame and a mounting shell installed at the bottom end of the electric vehicle, the interior of the mounting shell is fixedly connected with reinforcing ribs, and the reinforcing ribs divide the interior of the mounting shell into a plurality of fixing grooves for fixing the battery, the upper left and right ends of the mounting shell are fixedly connected with fixing strips, both of the two fixing strips are provided with card slots, and the positions corresponding to the card slots on the fixing frame are provided with fixing mechanisms, the bottom end of the mounting shell is connected to a protective shell through a plurality of connecting mechanisms, the interior of the protective shell is fixedly connected with a foam buffer sleeve, the inner side wall of the foam buffer sleeve is tightly attached to the outer side wall of the mounting shell, which is convenient for its installation and disassembly, can alleviate the impact on the mounting shell, effectively avoid deformation and damage of the mounting shell, play an effect of protecting the battery, and improve the practicality of its use.

[0008] The utility model is further configured as follows: the fixing mechanism includes a card plate, a slide groove is provided at a position on the fixing frame corresponding to the card groove, the card plate slidably cooperates with the slide groove, a plurality of compression springs are connected between the card plate and the fixing frame, and two pull rods are fixedly connected to one end of the card plate away from the mounting shell, both of the pull rods are slidably cooperated with the fixing frame, and the mounting shell can be quickly fixed through the fixing mechanism.

[0009] The utility model is further configured such that the side ends of the two pull rods are fixedly connected with pull plates, and the side ends of the pull plates are fixedly connected with pull handles, and the card plate is moved by pulling the pull handles and the pull plates, so that the card plate is moved to the outside of the card slot, thereby facilitating the removal of the installation shell from the fixed frame.

[0010] The utility model is further configured such that a fixing plate is fixedly connected to the bottom end of the fixing frame, a screw is threadedly connected to the fixing plate, and a positioning groove matched with the screw is provided at a position corresponding to the screw at the bottom end of the pulling plate to facilitate fixing the pulling plate.

[0011] The utility model is further configured that the bottom end of the screw rod is fixedly connected with a turning handle, and the screw rod can be easily rotated by the turning handle.

[0012] The utility model is further configured such that the connecting mechanism includes a fixing block, which is fixedly mounted on the bottom end of the mounting shell, a convex groove is provided at the bottom end of the fixing block, a convex block is slidingly provided inside the convex groove, the convex block is fixedly connected to the protective shell by screws, and the protective shell is mounted on the mounting shell by the connecting mechanism.

[0013] The utility model is further configured such that a sealing ring is fixedly connected to the inner upper side of the protective shell, and the inner side wall of the sealing ring is in sealing contact with the outer side wall of the mounting shell, thereby improving the sealing between the protective shell and the mounting shell.

[0014] The utility model is further configured that a sealing gasket is fixedly connected to the top end of the mounting shell, and the sealing gasket is used to improve the sealing performance of the connection between the mounting shell and the electric vehicle.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a lower shell structure of an energy storage device for an electric vehicle, which has the following beneficial effects:

[0017] 1. When the installation shell needs to be installed, pull the pull plate and the card plate into the inside of the slide groove through the pull plate and the pull handle, and then insert the installation shell into the inside of the installation frame, and then release the pull plate and the pull handle, push the card plate to move through the compression spring, and insert the card plate into the inside of the card slot, fix the installation shell through the card plate, so as to facilitate its installation.

[0018] 2. When the installation shell needs to be disassembled, the pull plate and the card plate are pulled by the pull plate and the pull handle to move the card plate toward the inside of the slide slot and separate the card plate from the card slot, and then the installation shell is removed from the inside of the fixed frame, thereby facilitating its disassembly.

[0019] 3. By providing a protective shell and a foam cushioning sleeve between the protective shell and the mounting shell, when the electric vehicle collides with an object during driving, the protective shell and the foam cushioning sleeve can protect the mounting shell, thereby alleviating the impact force on the mounting shell, effectively avoiding deformation and damage of the mounting shell, protecting the battery, and improving the practicality of its use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front structure of the lower shell structure of an energy storage device for an electric vehicle in the utility model;

[0021] Figure 2 This is a bottom view structural diagram of a lower shell structure of an energy storage device for an electric vehicle in the utility model;

[0022] Figure 3 It is a partial cross-sectional structural diagram of the installation shell, protective shell, foam buffer sleeve and sealing ring in the utility model;

[0023] Figure 4 It is a partial cross-sectional structural diagram of the connection between the fixing mechanism and the fixing frame and other structures in the utility model;

[0024] Figure 5 It is a structural schematic diagram of the connecting mechanism in the utility model.

[0025] In the figure: 1. fixing frame; 2. mounting shell; 3. reinforcing rib; 4. fixing groove; 5. fixing strip; 6. card slot; 7. protective shell; 8. foam cushion sleeve; 9. card plate; 10. slide groove; 11. compression spring; 12. pull rod; 13. pull plate; 14. pull handle; 15. fixing plate; 16. screw; 17. positioning groove; 18. turning handle; 19. fixing block; 20. convex groove; 21. convex block; 22. screw; 23. sealing ring; 24. sealing gasket. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 A lower shell structure of an energy storage device for an electric vehicle comprises a fixing frame 1 and a mounting shell 2 installed at the bottom end of the electric vehicle, a sealing gasket 24 is fixedly connected to the top end of the mounting shell 2, and the sealing gasket 24 is used to improve the sealing performance of the connection between the mounting shell 2 and the electric vehicle, a reinforcing rib 3 is fixedly connected to the inside of the mounting shell 2, and the reinforcing rib 3 is used to strengthen the inside of the mounting shell 2, and the reinforcing rib 3 divides the inside of the mounting shell 2 into a plurality of fixing grooves 4 for fixing the battery, a fixing strip 5 is fixedly connected to the upper left and right ends of the mounting shell 2, and a card slot 6 is provided on the two fixing strips 5, and a fixing mechanism is provided at the position corresponding to the card slot 6 on the fixing frame 1, and the bottom end of the mounting shell 2 is connected to a protective shell 7 through a plurality of connecting mechanisms, and a foam buffer sleeve 8 is fixedly connected to the inside of the protective shell 7, and the inner side wall of the foam buffer sleeve 8 is tightly attached to the outer side wall of the mounting shell 2.

[0030] In this embodiment, the fixing mechanism facilitates the disassembly and assembly of the mounting shell 2, and the protective shell 7 is installed on the outside of the mounting shell 2 through the connecting mechanism. By setting the protective shell 7 and arranging a foam buffer sleeve 8 between the protective shell 7 and the mounting shell 2, when the electric vehicle collides with an object during driving, the protective shell 7 and the foam buffer sleeve 8 can protect the mounting shell 2, alleviate the impact force on the mounting shell 2, effectively avoid deformation and damage of the mounting shell 2, protect the battery, and improve its practicality.

[0031] See also Figure 1-4 The fixing mechanism includes a card plate 9, a slide groove 10 is provided at a position corresponding to the card groove 6 on the fixed frame 1, the card plate 9 and the slide groove 10 are slidably matched, a plurality of compression springs 11 are connected between the card plate 9 and the fixed frame 1, and one end of the card plate 9 away from the mounting shell 2 is fixedly connected to two pull rods 12, and the two pull rods 12 are both slidably matched with the fixed frame 1, and the side ends of the two pull rods 12 are fixedly connected to pull plates 13, and the side ends of the pull plates 13 are fixedly connected to pull handles 14, and the bottom end of the fixed frame 1 is fixedly connected There is a fixing plate 15, on which a screw 16 is threadedly connected, a positioning groove 17 adapted to the screw 16 is provided at the position corresponding to the bottom end of the pull plate 13 and the screw 16, and a turning handle 18 is fixedly connected to the bottom end of the screw 16. The turning handle 18 and the screw 16 are rotated clockwise, and the screw 16 moves upward relative to the fixing block 19, and the screw 16 is inserted into the inside of the positioning groove 17, so as to fix the pull plate 13, prevent the card plate 9 from sliding, and improve the stability of the fixing of the installation shell 2.

[0032] In this embodiment, when the installation shell 2 needs to be installed, the pull plate 13 and the pull handle 14 are used to pull the pull plate 13 and the card plate 9 toward the inside of the slide groove 10, and then the installation shell 2 is inserted into the inside of the installation frame, and then the pull plate 13 and the pull handle 14 are released, and the card plate 9 is pushed to move by the compression spring 11, and the card plate 9 is inserted into the inside of the card groove 6, and the installation shell 2 is fixed by the card plate 9, so as to facilitate its installation. When the installation shell 2 needs to be disassembled, the pull plate 13 and the pull handle 14 are used to pull the pull plate 13 and the card plate 9, so that the card plate 9 moves toward the inside of the slide groove 10, and the card plate 9 is separated from the card groove 6, and then the installation shell 2 is removed from the inside of the fixed frame 1, so as to facilitate its disassembly.

[0033] See also Figure 2 and Figure 5The connecting mechanism includes a fixing block 19, which is fixedly mounted on the bottom end of the mounting shell 2. A convex groove 20 is provided at the bottom end of the fixing block 19. A convex block 21 is slidingly provided inside the convex groove 20. The convex block 21 is fixedly connected to the protective shell 7 through a screw 22. A sealing ring 23 is fixedly connected to the upper inner side of the protective shell 7. The inner side wall of the sealing ring 23 is in sealing contact with the outer side wall of the mounting shell 2, thereby improving the sealing between the protective shell 7 and the mounting shell 2.

[0034] In this embodiment, the protective shell 7 is installed on the bottom outer wall of the mounting shell 2 by screws 22. When the protective shell 7 hits an object during the driving of the electric vehicle, the convex block 21 slides inside the convex groove 20 to ensure that the protective shell 7 moves back and forth in a small range relative to the mounting shell 2. At the same time, the foam buffer sleeve 8 plays a buffering role.

[0035] In summary, when the overall equipment is in use:

[0036] When the installation shell 2 needs to be installed, the pull plate 13 and the pull handle 14 are used to pull the pull plate 13 and the card plate 9 toward the inside of the slide groove 10, and then the installation shell 2 is inserted into the inside of the installation frame, and then the pull plate 13 and the pull handle 14 are released, and the card plate 9 is pushed to move by the compression spring 11, and the card plate 9 is inserted into the inside of the card groove 6, and the installation shell 2 is fixed by the card plate 9, and then the turning handle 18 and the screw rod 16 are turned clockwise, and the screw rod 16 moves upward relative to the fixing block 19, and the screw rod 16 is inserted into the inside of the positioning groove 17, so that the pull plate 13 is fixed, so as to facilitate the fixing of the installation shell 2;

[0037] When it is necessary to disassemble the mounting shell 2, turn the handle 18 and the screw 16 counterclockwise to move the screw 16 to the bottom of the positioning groove 17, and then pull the pull plate 13 and the clamping plate 9 through the pull plate 13 and the pull handle 14 to move the clamping plate 9 toward the inside of the slide groove 10 and separate the clamping plate 9 from the clamping groove 6, and then remove the mounting shell 2 from the inside of the fixed frame 1, thereby facilitating the disassembly of the mounting shell 2.

[0038] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lower housing structure of an energy storage device for an electric vehicle, comprising a fixing frame (1) and a mounting housing (2) mounted at the bottom of the electric vehicle, wherein: The interior of the installation shell (2) is fixedly connected with a reinforcing rib (3), and the reinforcing rib (3) divides the interior of the installation shell (2) into a plurality of fixing grooves (4) for fixing the battery. The upper left end and the upper right end of the installation shell (2) are fixedly connected with a fixing strip (5), and the two fixing strips (5) are provided with a card slot (6). The positions corresponding to the card slots (6) on the fixing frame (1) are provided with fixing mechanisms. The bottom end of the installation shell (2) is connected to a protective shell (7) through a plurality of connecting mechanisms. The interior of the protective shell (7) is fixedly connected with a foam buffer sleeve (8), and the inner side wall of the foam buffer sleeve (8) is tightly attached to the outer side wall of the installation shell (2).

2. The lower housing structure of an energy storage device for an electric vehicle according to claim 1, characterized in that: The fixing mechanism comprises a card plate (9), a slide groove (10) is provided at a position on the fixing frame (1) corresponding to the card groove (6), the card plate (9) and the slide groove (10) are slidably matched, a plurality of compression springs (11) are connected between the card plate (9) and the fixing frame (1), and two pull rods (12) are fixedly connected to one end of the card plate (9) away from the mounting shell (2), and both of the two pull rods (12) are slidably matched with the fixing frame (1).

3. The lower housing structure of an energy storage device for an electric vehicle according to claim 2, characterized in that: The side ends of the two pull rods (12) are fixedly connected to a pull plate (13), and the side end of the pull plate (13) is fixedly connected to a pull handle (14).

4. The lower housing structure of an energy storage device for an electric vehicle according to claim 3, characterized in that: A fixing plate (15) is fixedly connected to the bottom end of the fixing frame (1), a screw rod (16) is threadedly connected to the fixing plate (15), and a positioning groove (17) adapted to the screw rod (16) is provided at a position corresponding to the bottom end of the pulling plate (13) and the screw rod (16).

5. The lower housing structure of an energy storage device for an electric vehicle according to claim 4, characterized in that: The bottom end of the screw rod (16) is fixedly connected to a turning handle (18).

6. The lower housing structure of an energy storage device for an electric vehicle according to claim 1, characterized in that: The connection mechanism comprises a fixing block (19), wherein the fixing block (19) is fixedly mounted on the bottom end of the mounting shell (2), a convex groove (20) is provided at the bottom end of the fixing block (19), a convex block (21) is slidably provided inside the convex groove (20), and the convex block (21) is fixedly connected to the protective shell (7) via a screw (22).

7. The lower housing structure of an energy storage device for an electric vehicle according to claim 1, characterized in that: A sealing ring (23) is fixedly connected to the inner upper side of the protective shell (7), and the inner side wall of the sealing ring (23) is in sealing contact with the outer side wall of the mounting shell (2).

8. The lower housing structure of an energy storage device for an electric vehicle according to claim 1, characterized in that: A sealing gasket (24) is fixedly connected to the top end of the mounting shell (2).

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