Protective lithium battery shell and lithium battery

Abstract

The utility model discloses a protective lithium battery shell and a lithium battery, relates to the technical field of lithium batteries, and aims to solve the technical problems that a buffer structure easily exceeds the elastic limit at the moment of strong collision, so that direct damage is caused, and the buffer effect is lost. A battery pack is arranged in the battery shell, a pressure-resistant component is fixedly arranged between the battery shell and the battery pack, the pressure-resistant component comprises four upright posts which are fixedly arranged at the corners of the battery shell, and a transverse plate is fixedly arranged between every two adjacent upright posts, so that through the design of the upright posts, the protection strength of the corners of the battery shell can be improved, the pressure resistance is enhanced, and the service life of the battery shell is prolonged. The structure that the transverse plates connected between the adjacent stand columns are matched with the buffering pieces can enhance the pressure resistance of the side faces of the battery shell, the stress strength of the battery shell is enhanced, the buffering effect can be improved when the battery shell is collided by matching with the design of the pressure-resistant strips, and the battery shell has the advantages of being high in anti-collision strength, not prone to deformation and capable of improving the protection performance on the battery shell and the battery pack.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field more specifically, relate to a protective lithium battery shell and lithium battery. BACKGROUND

[0002] With the wide application of lithium battery in many fields such as electric vehicle, portable electronic equipment, energy storage system etc., higher requirements are put forward for the safety and stability of lithium battery.

[0003] The existing protective lithium battery shell is usually provided with a buffer structure between the shell and the lithium battery, which improves the protection of the lithium battery when being collided by setting the buffer structure, but the material of the buffer structure is usually flexible, resulting in weak overall anti-collision effect, so that the buffer structure is directly damaged when being subjected to strong collision, losing the buffering effect, therefore, a buffer structure with improved pressure resistance is needed, in view of this, we provide a protective lithium battery shell and lithium battery. SUMMARY

[0004] The utility model aims at overcoming the insufficient of prior art, adapting to the actual need, provide a kind of protective lithium battery shell and lithium battery, to solve the technical problem that current buffer structure is easy to exceed elastic limit in strong collision moment, cause direct damage, lose buffering effect.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a protective lithium battery shell and lithium battery, including the battery shell of battery pack installation, the battery shell and battery pack between fixed installation have compression resistance component;

[0006] The compression resistance component includes four fixedly installed columns at the corners of the battery shell, two adjacent columns are fixedly provided with a horizontal plate between them, a buffer is fixedly arranged between the side of the horizontal plate facing the battery shell, and a compression resistance strip is fixedly installed between the buffer and the horizontal plate.

[0007] The buffer includes a plurality of V-shaped compression resistance pieces, and the tips of the compression resistance pieces are fixedly connected to the inner wall of the battery shell, and a reinforcing plate is integrally formed between the opposite sides of the compression resistance pieces.

[0008] The utility model can improve the protection strength of the corners of the battery shell and the compression resistance by the design of the column, the structure of the horizontal plate connected between the adjacent columns and the buffer can strengthen the compression resistance of the side of the battery shell and the stress strength of the battery shell, the design of the compression resistance strip can increase the buffering effect when being collided, the structure cooperation can improve the compression resistance strength of the instantaneous high-strength collision, relieve the impact force, reduce the probability of damage, strengthen the buffering effect of the compression resistance strip in high-strength collision, and strengthen the protection of the battery pack.

[0009] Preferably, a cylindrical strip is arranged at the center of the compression-resistant strip, a honeycomb hole is arranged through between two ends of the cylindrical strip, and a corrugated ring is integrally formed on the outer wall of the honeycomb hole.

[0010] Preferably, a triangular-shaped buffer cavity is formed between the tip of the compression-resistant piece and the reinforcing plate, and a buffer strip is fixedly arranged in the buffer cavity.

[0011] Preferably, a plurality of corrugated grooves are arranged between the buffer strips, and the material of the buffer strips is rubber.

[0012] Preferably, a plurality of limiting convex strips are integrally formed on the opposite sides of the compression-resistant piece, and a limiting clamping groove combined with the limiting convex strips is arranged on the side of the compression-resistant strip.

[0013] Preferably, a plurality of rhombic-shaped compression-resistant cavities are arranged through between two ends of the column, and the acute angles of the plurality of compression-resistant cavities are arrayed towards the corners of the column.

[0014] Preferably, a connecting plate is fixedly arranged between two adjacent compression-resistant pieces, and an isosceles triangular-shaped supporting cavity is formed between the two adjacent compression-resistant pieces and the connecting plate.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The design of the column can improve the protection strength of the corners of the battery shell, strengthen the compression resistance, the structure of the connecting horizontal plate between the adjacent columns and the buffer piece can strengthen the compression resistance of the side of the battery shell, strengthen the stress strength of the battery shell, the design of the compression-resistant strip can increase the buffering effect when being collided, the structure cooperation can improve the compression resistance of the instantaneous high-strength collision, relieve the impact force, reduce the damage probability, strengthen the buffering effect of the compression-resistant strip in the high-strength collision, and strengthen the protection of the battery pack.

[0017] 2. The design of the reinforcing plate and the supporting cavity can further improve the impact resistance of the buffer piece, the buffer strip arranged in the buffer cavity can further strengthen the buffering property of the side end of the compression-resistant piece, the corrugated groove can be deformed through the wave crest and wave trough part, the pressure can be absorbed through the bending and stretching of the material, the buffering effect is further strengthened, the anti-deformation effect of the side end of the compression-resistant piece is strengthened, and the durability of the structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is an internal structure schematic view of the utility model;

[0020] Figure 3 is a partial structural exploded view of the utility model; Figure 2

[0021] Figure 4 is a partial structural exploded view of the utility model;

[0022] Figure 5 is a partial structural exploded view of the utility model; Figure 3

[0023] Figure label explanation: 1, battery shell; 2, battery pack; 3, compression-resistant assembly; 4, stand; 401, compression-resistant cavity; 5, horizontal plate; 6, buffer; 601, compression-resistant piece; 602, reinforcing plate; 603, limiting convex strip; 604, buffer cavity; 605, connecting plate; 7, compression-resistant strip; 701, cylindrical strip; 702, honeycomb hole; 703, corrugated ring; 704, limiting clamping groove; 8, buffer strip; 801, corrugated groove. DETAILED DESCRIPTION

[0024] As Figures 1 to 5 shown, the utility model relates to a protective lithium battery shell and lithium battery, including the battery shell 1 of installing battery pack 2, battery shell 1 with battery pack 2 between fixed installation has compression-resistant assembly 3, and compression-resistant assembly 3 includes four fixed installations in the stand 4 of battery shell 1 corner, and fixedly set up horizontal plate 5 between adjacent two stands 4, and the side of horizontal plate 5 with battery shell 1 is fixedly set up and has buffer 6 between, and buffer 6 with horizontal plate 5 between fixed installation has compression-resistant strip 7;Through the setting of stand 4 can strengthen the compression resistance of the corner of battery shell 1, and the connection of cooperation horizontal plate 5 can make four stands 4 play the role of mutual support between, improve the crashworthiness of the corner of battery shell 1, and the cooperation of horizontal plate 5 and buffer 6 can increase the crashworthiness of the side of battery shell 1, and the structure of compression-resistant strip 7 set up inside buffer 6 can play the buffering effect, so that the strength is increased while maintaining good buffering property, improve the protection of battery pack 2.

[0025] Buffer 6 includes several V-shaped compression-resistant pieces 601, and the tip of compression-resistant piece 601 is fixedly connected with the inner wall of battery shell 1, and reinforcing plate 602 is integrally formed between the opposite sides of compression-resistant piece 601;Compression-resistant piece 601 is designed as V-shaped and has good anti-collision deformation characteristics, and the setting of reinforcing plate 602 can further strengthen the support strength of the two sides of compression-resistant piece 601, improve the anti-collision effect.

[0026] ​​In the embodiment of the utility model, the center of the compression resistance strip 7 is wrapped with a cylindrical strip 701, a honeycomb hole 702 is formed between the two ends of the cylindrical strip 701, and a corrugated ring 703 is integrally formed on the outer wall of the honeycomb hole 702; the cylindrical strip 701 is arranged inside the compression resistance strip 7 to achieve the effect of multi-layer buffering, when the honeycomb hole 702 structure is subjected to external force, the wall of the thin-walled unit will bend and deform, thereby effectively absorbing energy. The honeycomb material has a high strength-weight ratio and can provide good buffering performance under a lighter weight, and the arrangement of the corrugated ring 703 can form a corresponding mounting groove inside the compression resistance strip 7, when subjected to pressure, the peak and valley parts of the corrugated ring 703 will deform, and the pressure is absorbed by the bending and stretching of the material.

[0027] In the embodiment of the utility model, the tip of the compression resistance piece 601 and the reinforcing plate 602 are formed with a triangular-shaped buffer cavity 604, and a buffer strip 8 is fixedly arranged in the buffer cavity 604; the arrangement of the buffer strip 8 can enhance the buffering performance of the side end of the compression resistance piece 601 and increase the effect of relieving the impact force.

[0028] In the embodiment of the utility model, a plurality of corrugated grooves 801 are formed between the buffer strips 8, and the material of the buffer strip 8 is rubber; when subjected to pressure, the peak and valley parts of the corrugated groove 801 will deform, the pressure is absorbed by the bending and stretching of the material, and the buffering performance is enhanced.

[0029] In the embodiment of the utility model, the opposite sides of the compression resistance piece 601 are integrally formed with a plurality of limiting convex strips 603, and the side of the compression resistance strip 7 that is attached to the compression resistance piece 601 is provided with a limiting clamping groove 704 that is combined with the limiting convex strip 603; the cooperation of the limiting convex strip 603 and the limiting clamping groove 704 can improve the fixity of the installation position of the compression resistance strip 7, and also increase the range of pressure shrinkage and improve the resilience.

[0030] In the embodiment of the utility model, a plurality of rhombus-shaped compression resistance cavities 401 are formed between the two ends of the column 4, and the sharp corners of the plurality of compression resistance cavities 401 are arrayed towards the corners of the column 4; the design of the compression resistance cavity 401 can reduce the weight of the column 4 while maintaining good anti-deformation effect.

[0031] In the embodiment of the utility model, a connecting plate 605 is fixedly arranged between the two adjacent compression resistance pieces 601, and an isosceles triangle-shaped support cavity is formed between the two adjacent compression resistance pieces 601 and the connecting plate 605; the arrangement of the connecting plate 605 can integrate multiple compression resistance pieces 601, so that the force can be evenly dispersed when a single point is subjected to stress, thereby reducing the probability of single-point collision damage, and the formed support cavity can improve the strength of the combination between the compression resistance piece 601 and the connecting plate 605.

[0032] Working principle: the embodiment provides a protective lithium battery shell and lithium battery, first through the setting of the column 4 can increase the strength of the corner of the battery shell 1, improve the effect of anti compression deformation, the connection of the cross plate 5 can connect the four side columns 4 integrally, so that when unilateral corner stress collision the remaining corners can play a supporting role, further strengthen the compression resistance, the buffer piece 6 structure designed between the cross plate 5 and the battery shell 1 can strengthen the side impact resistance of the battery shell 1 while increasing the buffering property, the compression resistance piece 601 is provided with the compression resistance strip 7 and the buffer strip 8 structure inside, which can generate elastic force when being pressed and deformed under impact, so as to offset the impact force, achieve the buffering effect, the honeycomb hole 702 structure provided inside the cylindrical strip 701 is composed of many hexagonal thin-walled units, when the structure is subjected to external force, the wall of the thin-walled unit will be bent and deformed, thereby effectively absorbing energy. The honeycomb material has a high strength-weight ratio and can provide good buffering performance under a lighter weight. The corrugated ring 703 is arranged to absorb pressure by bending and stretching, further strengthening the buffering characteristics of the compression resistance strip 7 as a whole. Meanwhile, the design of the buffer strip 8 can also increase the buffering effect of the side end of the buffer piece 6. In this way, the compression strength is improved while maintaining good buffering effect, improving the protection of the outer wall of the battery shell 1. The support cavity arranged between the compression resistance pieces 601 can further increase the integrity, so that when the corner position is stressed, the impact force can also be reduced through force transmission, improving the uniformity of the diffusion force.

[0033] The embodiments of the utility model discloses the better embodiment, but is not limited to this, the ordinary skill of the art, the person, the spirit of the utility model is appreciated very easily according to the above-mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. A protective lithium battery enclosure, characterized by, The battery shell (1) is fixedly installed with the battery pack (2) and the compression-resistant assembly (3); The compression-resistant assembly (3) comprises four vertical columns (4) fixedly installed at the corners of the battery shell (1), two adjacent vertical columns (4) are fixedly provided with a horizontal plate (5), the side surface of the horizontal plate (5) opposite to the battery shell (1) is fixedly provided with a buffer (6), and the buffer (6) and the horizontal plate (5) are fixedly installed with a compression-resistant strip (7). The buffer (6) comprises a plurality of V-shaped compression-resistant pieces (601), the tip of the compression-resistant piece (601) is fixedly connected with the inner wall of the battery shell (1), and the opposite side surfaces of the compression-resistant piece (601) are integrally formed with a reinforcing plate (602).

2. The protective lithium battery case of claim 1, wherein, The center of the compression-resistant strip (7) is wrapped with a cylindrical strip (701), the two ends of the cylindrical strip (701) are provided with a honeycomb hole (702), and the outer wall of the honeycomb hole (702) is integrally formed with a corrugated ring (703).

3. The protective lithium battery case of claim 1, wherein, The tip of the compression-resistant piece (601) and the reinforcing plate (602) are integrally formed with a triangular-shaped buffer cavity (604), and the buffer cavity (604) is fixedly provided with a buffer strip (8) inside.

4. The protective lithium battery enclosure of claim 3, wherein, The buffer strip (8) is provided with a plurality of corrugated grooves (801) between the buffer strip (8), and the material of the buffer strip (8) is rubber.

5. The protective lithium battery enclosure of claim 1, wherein, The opposite side surfaces of the compression-resistant piece (601) are integrally formed with a plurality of limiting convex strips (603), and the side surface of the compression-resistant strip (7) combined with the compression-resistant piece (601) is provided with a limiting clamping groove (704) combined with the limiting convex strip (603).

6. The protective lithium battery enclosure of claim 1, wherein, The two ends of the vertical column (4) are provided with a plurality of rhombic-shaped compression-resistant cavities (401), and the plurality of compression-resistant cavities (401) are arrayed with the sharp corners facing the corners of the vertical column (4).

7. The protective lithium battery enclosure of claim 1, wherein, Two adjacent compression-resistant pieces (601) are fixedly provided with a connecting plate (605), and a scalene triangle-shaped supporting cavity is formed between the two adjacent compression-resistant pieces (601) and the connecting plate (605).

8. A lithium battery, characterized by The protective lithium battery shell comprises the protective lithium battery shell according to any one of claims 1 to 7.

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