Anti-collision lithium battery plastic shell with honeycomb-like structure

Abstract

The invention discloses an anti-collision lithium battery plastic shell with a honeycomb-like structure, and relates to the technical field of lithium battery plastic shells. The problem that an existing lithium battery plastic shell is sunken due to external impact, so that safety accidents are caused is solved. Comprising a base, the base is fixedly connected with four supporting rods, the upper sides of all the supporting rods are jointly connected with a limiting frame and a cover plate in a sliding mode, the four supporting rods fix the limiting frame and the cover plate through bolts, and the cover plate is located on the upper side of the limiting frame and attached to the limiting frame; a fixing cover is fixedly connected between the base and the cover plate, first elastic pieces distributed along the edge line of the base are arranged on the upper side of the base, the section of each first elastic piece is in a regular hexagon shape, and the outer sides of all the first elastic pieces make contact with the fixing cover. According to the invention, a honeycomb-like structure is adopted as a core, and when the lithium battery is impacted by the outside, the impact energy is absorbed through the elastic deformation of the first elastic piece, so that the lithium battery is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery plastic cases, and in particular to an impact-resistant lithium battery plastic case with an imitation honeycomb structure. Background Art

[0002] Currently, lithium batteries have been widely used in many fields such as electronic equipment, electric vehicles, and energy storage systems, and the safety of lithium batteries has increasingly become a focus of attention. In the structure of lithium batteries, the plastic shell is an important barrier to protect the internal components of the battery, and its performance is directly related to the overall safety and service life of the battery.

[0003] However, the lithium battery plastic cases currently on the market generally have a significant defect: when subjected to external impact, the plastic case often deforms and sinks inward because it cannot effectively resist the impact force. This depression will directly squeeze the internal battery, causing problems such as battery cell deformation and tab short circuit. In severe cases, it may even cause safety accidents such as battery fire or explosion. Summary of the Invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention provides an impact-resistant lithium battery plastic case with an imitation honeycomb structure.

[0005] The technical solution of the present invention is: an impact-resistant lithium battery plastic case with an imitation honeycomb structure, comprising: a base, the base is fixed with four support rods, the upper sides of all the support rods are slidably connected to a limit frame and a cover plate, the four support rods fix the limit frame and the cover plate by bolts, the cover plate is located on the upper side of the limit frame and the two are in contact, a fixed cover is fixed between the base and the cover plate, a first elastic member distributed along its edge line is provided on the upper side of the base, the cross-section of the first elastic member is a regular hexagon, and the outer sides of all the first elastic members are in contact with the fixed cover.

[0006] Furthermore, four partitions are provided between the base and the limiting frame and are in contact with both.

[0007] Furthermore, two of the four partitions that are parallel to each other are divided into a group, wherein the vertical edge sides of one group of partitions are fixed with first limit blocks distributed at intervals, and the vertical edges of the other group of partitions are fixed with second limit blocks distributed at intervals, the first limit block is located between two adjacent second limit blocks, the second limit block is used to limit the first limit block, the cross-sections of the first limit block and the second limit block are both trapezoidal, and the upper bottom of the cross-section of the first limit block is close to the adjacent partition.

[0008] Furthermore, the four support rods are located at four corners of the base, and the first limiting block and the second limiting block slide along adjacent support rods respectively.

[0009] Furthermore, energy absorption boxes are fixedly connected between the four corners of the base and the limit frame.

[0010] Furthermore, a second elastic member distributed in a linear array is provided on one side of the partition close to the fixed cover, and the number of the second elastic members distributed in a linear array on the same partition is consistent with the number of the first elastic members on the same side of the base, and the second elastic member is fixedly connected to the adjacent first elastic member.

[0011] Furthermore, the partition is fixedly connected to two third elastic members, the third elastic members are fixedly connected to adjacent first elastic members, and a connecting plate is fixedly connected between two adjacent first elastic members.

[0012] Furthermore, all the partitions are provided with arcuate surfaces on the facing sides, and the length of the projection of the upper edge of the partition arcuate surface on the adjacent side of the fixed cover is shorter than the length of the upper edge of the partition close to the fixed cover.

[0013] Furthermore, the connecting plate is fixedly connected to two fixing plates, and the fixing plates are fixedly connected to the adjacent first elastic members.

[0014] Furthermore, there is a gap between the two fixing plates on the same connecting plate, and the projection of the gap on the horizontal plane is an isosceles triangle.

[0015] The beneficial effects of the present invention are as follows: the present invention adopts the simulated honeycomb structure as the core, and when subjected to external impact, the first elastic member (simulated honeycomb structure unit) absorbs the impact energy through its own elastic deformation, thereby protecting the lithium battery; When the first elastic member is squeezed and deformed, the first elastic member transmits the impact force to the partition, causing the partition to deform toward the lithium battery. Under the mutual limiting action of the first limit block and the second limit block, the partition produces relative displacement with the two adjacent partitions during the deformation process and is subject to the constraints from the two adjacent partitions. Through this interaction, the impact force is effectively dispersed and gradually absorbed, ultimately achieving the dissipation of the impact energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A bottom view of the three-dimensional structure of the present invention; Figure 3 is a schematic diagram of the three-dimensional structure of the first elastic member of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the support rod of the present invention; Figure 5 A top view of the three-dimensional structure of the first elastic member of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the connecting plate and the fixing plate of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the second elastic member and the third elastic member of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the partition of the present invention.

[0017] In the accompanying drawings, 1. base, 101. energy absorption box, 2. support rod, 3. limit frame, 4. cover plate, 5. fixed cover, 6. first elastic member, 7. partition, 701. first limit block, 702. second limit block, 8. second elastic member, 9. third elastic member, 10. connecting plate, 11. fixed plate. DETAILED DESCRIPTION

[0018] The above scheme is further described below with reference to specific examples. It should be understood that these examples are intended to illustrate the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer. The implementation conditions not specified are generally those used in routine experiments.

[0019] Example 1: A collision-proof lithium battery plastic shell imitating a honeycomb structure, such as Figures 1-6 As shown, it includes: a base 1, the base 1 is fixed with four support rods 2, the upper sides of all support rods 2 are slidably connected to the limit frame 3 and the cover plate 4, the four support rods 2 fix the limit frame 3 and the cover plate 4 by bolts, the cover plate 4 is located on the upper side of the limit frame 3 and the two are in fit, a fixed cover 5 is fixed between the base 1 and the cover plate 4, the fixed cover 5 can be a plastic with tension, and a first elastic member 6 distributed along its edge line is provided on the upper side of the base 1, the cross-section of the first elastic member 6 is a regular hexagon, and the outer sides of all first elastic members 6 are in contact with the fixed cover 5. When the fixed cover 5 is hit, the impact force is transferred to the adjacent first elastic member 6, and the impact force is absorbed by the first elastic member 6.

[0020] Before using this device, please install the lithium battery into the device. The installation process is as follows: The user removes the bolts on the upper sides of the four support rods 2 in turn, and then removes the cover plate 4 from the four support rods 2. The user places the lithium battery in the area surrounded by all the partitions 7 in turn and contacts the upper side of the base 1. The user then places the cover plate 4 on the upper sides of the four support rods 2, and finally the user installs the bolts on the upper sides of the four support rods 2 in turn to their original positions.

[0021] After completing the installation of the lithium battery, the user installs the device to the required working position. After the device is hit, the subsequent description takes the left side part of the base 1 as an example. When the left side of the fixed cover 5 is hit, the impact force is first transmitted to the first elastic member 6 on the same side, which absorbs the impact energy through its own elastic deformation, thereby maintaining the stability of the lithium battery.

[0022] Example 2: On the basis of Example 1, Figure 4-Figure 8 As shown, four partitions 7 are provided between the base 1 and the limit frame 3, and are fitted with the two. The partitions 7 are made of a deformable material. The four partitions 7 are used to limit the lithium battery and increase the overall structural strength through the four partitions 7. Two of the four partitions 7 are parallel to each other and are divided into a group. The vertical edge sides of a group of partitions 7 distributed on the left and right are fixed with first limit blocks 701 distributed at intervals, and the vertical edges of a group of partitions 7 distributed front and back are fixed with second limit blocks 702 distributed at intervals. The first limit blocks 701 are located at adjacent Between the two second limit blocks 702, the second limit block 702 is used to limit the first limit block 701. The cross-sections of the first limit block 701 and the second limit block 702 are both trapezoidal, and the upper bottom of the cross-section of the first limit block 701 is close to the adjacent partition 7. The four support rods 2 are located at the four corners of the base 1. The first limit block 701 and the second limit block 702 slide along the adjacent support rods 2 respectively. Energy absorption boxes 101 are fixed between the four corners of the base 1 and the limit frame 3 to absorb the impact force on the corners of the base 1.

[0023] like Figure 6 and Figure 7 As shown, a second elastic member 8 distributed in a linear array is provided on the side of the partition 7 close to the fixed cover 5. The number of the second elastic members 8 distributed in a linear array on the same partition 7 is consistent with the number of the first elastic members 6 on the same side of the base 1. The second elastic member 8 is fixedly connected to the adjacent first elastic member 6. The second elastic member 8 is in a "J" shape, which is used to allow the side of the second elastic member 8 close to the partition 7 to diffuse outward when the side away from the partition 7 is squeezed, thereby absorbing the impact force. Two third elastic members 9 are fixedly connected to the partition 7, and the third elastic member 9 is fixedly connected to the adjacent first elastic member 6. A connecting plate 10 is fixedly connected between the two adjacent first elastic members 6.

[0024] like Figure 5-Figure 8As shown, all the partitions 7 are provided with curved surfaces on the facing sides. The length of the projection of the upper edge of the curved surface of the partition 7 on the adjacent side of the fixed cover 5 is shorter than the length of the upper edge of the partition 7 close to the fixed cover 5, which is used to provide space for the partition 7 and the lithium battery to deform. Taking the partition 7 on the left as an example, the right side of the partition 7 is composed of a curved surface and two vertical surfaces. The curved surface is located between the two vertical surfaces. When installing the lithium battery, the left side of the leftmost lithium battery contacts the two vertical surfaces on the right side of the left partition 7. During actual installation, rectangular plates for supporting the sides of multiple lithium batteries can be installed on the facing sides of the front and rear partitions 7. When the lithium battery expands abnormally to the front and rear, the rectangular plates squeeze the partitions 7 on the front and rear sides, and the curved surfaces of the front and rear partitions 7 are used to provide space for the lithium battery to deform. When the lithium battery expands abnormally to the left and right, the curved surfaces of the left and right partitions 7 are used to provide space for the lithium battery to deform.

[0025] like Figure 6 As shown, the connecting plate 10 is fixedly connected to two fixing plates 11, and the fixing plates 11 are fixedly connected to the adjacent first elastic members 6. The fixing plates 11 can be acrylic plates. There is a gap between the two fixing plates 11 on the same connecting plate 10, and the projection of this gap on the horizontal plane is an isosceles triangle, which is used to enable the two facing sides of the two adjacent fixing plates 11 to contact when they are approaching each other, and through the contact between the two, the structural strength of the adjacent first elastic members 6 is enhanced.

[0026] When the impact force exceeds the bearing capacity of the first elastic member 6, the impact force continues to be transmitted to the second elastic member 8 on the same side, causing it to diffuse and deform, further absorbing the remaining impact force. The impact force is gradually dissipated through a two-stage absorption mechanism, thereby achieving the effect of protecting the lithium battery.

[0027] When the device is subjected to a side impact, the fixed cover 5 drives the energy absorbing box 101 to actively deform, thereby absorbing the impact force of the impact.

[0028] When a local position on the left side of the device is hit, the first elastic member 6 on the left side is recessed inward and pulls the adjacent first elastic member 6 through the adjacent connecting plate 10, thereby pulling the two third elastic members 9 on the left side, causing the facing parts of the two third elastic members 9 on the left side to deform inward, so that when a local position on the left side of the device is hit, all the first elastic members 6 and third elastic members 9 on the left side can be deformed, thereby achieving the effect of uniformly dispersing the impact force of the local position. In the process of deformation of the connecting plate 10 and the two adjacent first elastic members 6 on the left side to the right, not only will the adjacent second elastic member 8 be squeezed, but the two adjacent fixed plates 11 will be brought closer. Under the effect of the projection of the gap between the two on the horizontal plane being an isosceles triangle, the facing sides of the two adjacent fixed plates 11 can contact when the two adjacent fixed plates 11 are close to each other. Through the contact between the two, the structural strength of the first elastic member 6 on the left side is enhanced.

[0029] After being subjected to the impact force at a local position and the second elastic member 8 on the left side is squeezed to the extreme position by the adjacent first elastic member 6, the above-mentioned parts squeeze the partition 7 on the left side, causing the partition 7 to deform to the right (the front and rear parts of the partition 7 on the left side will slide along the two adjacent support rods 2 on the left side during the deformation process). Since the right side of the partition 7 on the left side is arc-shaped, the partition 7 on the left side will not directly contact the lithium battery during the process of deforming to its arc surface being straight (used to provide space for the partition 7 to buffer the impact force).

[0030] When the local position on the left side of the device is subjected to external impact force, the partition 7 is deformed to the right and produces relative displacement with the partitions 7 on the front and rear sides. Under the action of the mutual engagement of the first limit block 701 and the second limit block 702, the partition 7 on the left side is constrained by the partitions 7 on the front and rear sides. This interaction can effectively disperse the impact force, thereby realizing the gradual absorption and dissipation of the external impact force.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A collision-proof lithium battery plastic case with a honeycomb structure, characterized in that: include: A base (1) is fixedly connected to four support rods (2), the upper sides of all the support rods (2) are slidably connected to a limit frame (3) and a cover plate (4), the four support rods (2) fix the limit frame (3) and the cover plate (4) by bolts, the cover plate (4) is located on the upper side of the limit frame (3) and the two are in contact, a fixed cover (5) is fixed between the base (1) and the cover plate (4), and a first elastic member (6) distributed along its edge line is provided on the upper side of the base (1), the cross section of the first elastic member (6) is a regular hexagon, and the outer sides of all the first elastic members (6) are in contact with the fixed cover (5).

2. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 1, characterized in that: Four partitions (7) are provided between the base (1) and the limiting frame (3) and are in contact with both.

3. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 2, characterized in that: Two of the four partitions (7) that are parallel to each other are divided into a group, wherein the vertical edge side of one group of partitions (7) is fixedly connected with first limiting blocks (701) distributed at intervals, and the vertical edge of the other group of partitions (7) is fixedly connected with second limiting blocks (702) distributed at intervals, the first limiting block (701) is located between two adjacent second limiting blocks (702), and the second limiting block (702) is used to limit the first limiting block (701), and the cross-sections of the first limiting block (701) and the second limiting block (702) are both trapezoidal, and the upper bottom of the cross-section of the first limiting block (701) is close to the adjacent partition (7).

4. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 3, characterized in that: The four support rods (2) are located at the four corners of the base (1), and the first limiting block (701) and the second limiting block (702) slide along adjacent support rods (2) respectively.

5. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 2, characterized in that: Energy absorption boxes (101) are fixedly connected between the four corners of the base (1) and the limiting frame (3).

6. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 3, characterized in that: A second elastic member (8) distributed in a linear array is provided on one side of the partition (7) close to the fixed cover (5); the number of the second elastic members (8) distributed in a linear array on the same partition (7) is the same as the number of the first elastic members (6) on the same side of the base (1); and the second elastic member (8) is fixedly connected to the adjacent first elastic member (6).

7. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 6, characterized in that: The partition (7) is fixedly connected to two third elastic members (9), the third elastic members (9) are fixedly connected to adjacent first elastic members (6), and a connecting plate (10) is fixedly connected between two adjacent first elastic members (6).

8. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 7, characterized in that: All the partitions (7) are provided with arcuate surfaces on the facing sides, and the length of the projection of the upper edge of the arcuate surface of the partition (7) on the adjacent side surface of the fixed cover (5) is shorter than the length of the upper edge of the partition (7) on the side close to the fixed cover (5).

9. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 7, characterized in that: The connecting plate (10) is fixedly connected to two fixing plates (11), and the fixing plates (11) are fixedly connected to the adjacent first elastic members (6).

10. The anti-collision lithium battery plastic case with a honeycomb structure according to claim 9, characterized in that: There is a gap between the two fixing plates (11) on the same connecting plate (10), and the projection of the gap on the horizontal plane is an isosceles triangle.

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