New energy battery shell with high safety coefficient

Abstract

The utility model relates to the technical field of explosion prevention of battery cases, in particular to a new energy battery case with a high safety factor, which comprises a battery case body, a part of the battery case body is extruded to form an extrusion layer, nicks are punched on the extrusion layer, a circle of reinforcing ribs are arranged on the periphery of the nicks, and the reinforcing ribs are arranged on the periphery of the nicks. The reinforcing ribs are enclosed along the nicks to form a closed shape, the reinforcing ribs are vertical faces which protrude upwards or sink downwards, and the vertical faces form the closed shape along the peripheries of the nicks; compared with the prior art, the fence formed by the reinforcing ribs can form an independent area, so that the nicks are not influenced by twisting of the peripheries of the nicks in the transportation process of the battery shell, the nicks are prevented from being twisted, deformed and vibrated due to impact force, the nicks are prevented from being damaged in the transportation process, and the service life of the battery shell is prolonged. And the service life of the explosion-proof nick is ensured, and the purposes of high yield and high safety of the battery shell are achieved.

Description

[Technical field]

[0001] The utility model relates to the technical field of explosion-proof battery shells, in particular to a new energy battery shell with a high safety factor. [Background Technology]

[0002] New energy vehicles require that the battery casing be opened in an explosion-proof manner when the gas pressure inside reaches 0.7MPa to 2.3MPa. This is because the aluminum casing of new energy batteries can explode before a short circuit occurs, or after prolonged charging, the electrolyte and other materials decompose and produce gases, which can cause explosions. Therefore, if the battery casing cannot release gases in a timely manner to prevent explosion, it will pose a safety risk to the vehicle while it is in motion.

[0003] To prevent this, battery casings currently on the market primarily feature notched casings for explosion protection. However, in actual use, the notched casings can be subjected to impact forces during transportation or vehicle operation, causing distortion and even cracking. This can impact the battery casing's explosion lifespan and prevent safety performance. [Utility Model Content]

[0004] The purpose of this utility model is to solve the above-mentioned shortcomings and provide a new energy battery casing with a high safety factor, which can prevent the battery casing from being twisted and deformed or even cracked due to the impact force on the scored part during transportation or vehicle operation, thereby overcoming the problem of affecting the life of the scored explosion.

[0005] In order to achieve the above purpose, a new energy battery shell with a high safety factor is designed, including a battery shell 1, on which an extrusion layer 2 is formed locally by extrusion, and a notch 3 is stamped on the extrusion layer 2. A circle of reinforcing ribs 4 are provided around the periphery of the notch 3, and the reinforcing ribs 4 are enclosed along the notch 3 to form a closed shape.

[0006] Furthermore, the reinforcing rib 4 is a vertical surface that is convex upward or concave downward, and the vertical surface forms a closed shape along the periphery of the notch 3. The closed shape constitutes an independent area, so that during operation of the battery housing, the twisting of the periphery of the notch will not affect the notch on the vertical surface.

[0007] Furthermore, the reinforcing ribs 4 are enclosed along the notches 3 to form a closed rectangle or ring, etc., which is very convenient and quick to manufacture and can be mass-produced.

[0008] Furthermore, the thickness of the extruded layer 2 on the battery housing 1 is 0.4 mm to 0.5 mm, and the residual thickness of the notch 3 is 0.10 mm to 0.22 mm, thereby achieving an explosion-proof pressure of 0.7 MPa to 2.3 MPa.

[0009] Furthermore, the notch 3 is in an I-shape, U-shape, M-shape, C-shape, O-shape or X-shape, etc., so that it can be realized with only a one-time design and mold cost, which is not only low-cost but also simple in processing technology and improves production efficiency.

[0010] Furthermore, the battery housing 1 is made of aluminum or steel, so that the extruded material can be compacted and compressed by multiple extrusion processes using a punch press, so that the material forms a denser organizational structure, so that score lines can be punched on the extruded part of the material.

[0011] Furthermore, the battery housing 1 is in a square box shape, and the notches 3 and the reinforcing ribs 4 are provided on the side surfaces of the battery housing 1 .

[0012] Furthermore, the battery housing 1 is in a circular tube shape, and the notches 3 and the reinforcing ribs 4 are provided on the tube wall and / or the tube cover of the battery housing 1 .

[0013] Compared with the prior art, the utility model has a simple structure and a reasonable design. A circle of upwardly convex or downwardly concave reinforcing ribs is provided around the periphery of the notch, and the reinforcing ribs surround the notch to form a closed shape, which is equivalent to adding a fence around the notch. The fence formed by the reinforcing ribs can constitute an independent area, so that during the operation of the battery shell, the twisting of the periphery of the notch will not affect the notch, thereby avoiding the notch from being twisted and deformed due to the impact force, ensuring that it will not be damaged during operation, ensuring the service life of the explosion-proof notch, and achieving the purpose of high finished product rate and high safety of the battery shell. It is worthy of promotion and application. [Brief Description of the Drawings]

[0014] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0015] Figure 2 yes Figure 1 Schematic diagram of the front structure;

[0016] Figure 3 yes Figure 1 Schematic diagram of the side structure;

[0017] Figure 4 yes Figure 1 A partial enlarged view of

[0018] Figure 5 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0019] Figure 6 yes Figure 5 Schematic diagram of the front structure;

[0020] Figure 7 yes Figure 5Schematic diagram of the side structure;

[0021] Figure 8 yes Figure 5 A partial enlarged view of

[0022] In the figure: 1, battery shell 2, extruded layer 3, notch 4, reinforcing ribs. [Specific implementation method]

[0023] The present invention is further described below with reference to the accompanying drawings:

[0024] As attached Figure 1 To the attached Figure 8 As shown, the utility model provides a new energy battery shell with a high safety factor, including a battery shell 1, a local extrusion layer 2 is formed on the battery shell 1 by extrusion, a notch 3 is punched on the extrusion layer 2, a circle of reinforcing ribs 4 is arranged around the periphery of the notch 3, and the reinforcing ribs 4 are enclosed along the notch 3 to form a closed shape; the reinforcing ribs 4 are upwardly convex or downwardly concave vertical surfaces, as shown in the attached Figure 1 To the attached Figure 4 The figure shows the upward protruding reinforcement ribs, as shown in the attached Figure 5 To the attached Figure 8 The figure shows a downwardly concave reinforcing rib, and the facade forms a closed shape along the periphery of the notch 3. The closed shape constitutes an independent area, so that during the transportation of the battery casing or the operation of the car, the twisting of the periphery of the notch will not affect the notch on the facade, thereby avoiding the notch from being twisted and deformed due to external force or impact, ensuring that it will not be damaged during operation, and ensuring the service life of the explosion-proof notch.

[0025] Among them, the reinforcing rib 4 is enclosed along the notch 3 to form a closed rectangular or ring shape. The closed shape designed here as a rectangle or ring can make the production more convenient and quick, and realize mass production. The notch 3 is in the shape of an I-beam, U-shape, M-shape, C-shape, O-shape or X-shape, so that it can be realized with only a one-time design and mold cost. It is not only low-cost, but also simple in processing technology and improved in production efficiency. The thickness of the extruded layer 2 on the battery shell 1 is 0.4mm-0.5mm, and the residual thickness of the notch 3 is 0.10mm-0.22mm, so that the purpose of explosion-proof pressure of 0.7MPa to 2.3MPa can be achieved.

[0026] In the present invention, the battery housing 1 is made of aluminum or steel, allowing for multiple extrusions using a punch press to compact the shrinkage of the material, creating a denser structure and allowing for the stamping of score lines on the extruded material. The battery housing 1 can be shaped like a square box, with the score lines 3 and reinforcing ribs 4 located on the sides. Alternatively, the battery housing 1 can be shaped like a circular tube, with the score lines 3 and reinforcing ribs 4 located on the tube wall and / or the tube cover.

[0027] This utility model aims to prevent the scored portion of the new energy battery casing from being twisted and deformed, or even cracked, by external forces during operation, which would affect the battery's lifespan. A circle of reinforcing ribs is provided around the scored portion, which acts as a protective fence. The ribs form an independent area after forming a fence, preventing external forces from affecting the scored portion, thereby ensuring the service life of the scored portion.

[0028] The utility model forms reinforcing ribs by adding protrusions (either inwardly or outwardly) around the notch, that is, increasing a reinforced facade. The reinforcing ribs have a shock-proof effect and increase the rigidity and strength of the notch. Therefore, during operation, the inner notch portion will not be squeezed or twisted, thereby avoiding interference and damage during operation, thereby improving stability and safety.

[0029] This utility model prevents the scoring of the new energy battery shell from being interfered with or damaged during operation, thereby ensuring the explosion-proof effect of the stamping scoring. When the internal pressure of the battery is too high, the stamping scoring is integrated into the explosion-proof form, effectively relieving the pressure, thereby avoiding uncontrolled explosions and ensuring safety performance. This utility model can be applied to the battery shell of new energy vehicles, and can also be widely used in other industries such as automotive electronics, aviation, and home appliances. It has strong adaptability and wider application, and is worthy of promotion and application.

[0030] The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connections adopt conventional connection methods in the existing technology, which will not be described in detail here.

[0031] The present invention is not limited to the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A new energy battery housing with a high safety factor, comprising a battery housing (1), characterized in that: An extrusion layer (2) is formed locally on the battery shell (1) by extrusion, a notch (3) is punched on the extrusion layer (2), a circle of reinforcing ribs (4) is provided around the periphery of the notch (3), and the reinforcing ribs (4) are enclosed along the notch (3) to form a closed shape.

2. The new energy battery housing with a high safety factor as claimed in claim 1, characterized in that: The reinforcing rib (4) is a vertical surface that is convex upward or concave downward, and the vertical surface forms a closed shape along the periphery of the notch (3).

3. The new energy battery housing with a high safety factor as claimed in claim 1, characterized in that: The reinforcing ribs (4) are enclosed along the notches (3) to form a closed rectangle or ring.

4. The new energy battery housing with a high safety factor as claimed in claim 1, 2 or 3, characterized in that: The thickness of the extruded layer (2) on the battery housing (1) is 0.4 mm to 0.5 mm, and the residual thickness of the notch (3) is 0.10 mm to 0.22 mm.

5. The new energy battery housing with high safety factor according to claim 1, 2 or 3, characterized in that: The notch (3) is in an I-shape, a U-shape, a M-shape, a C-shape, an O-shape or an X-shape.

6. The new energy battery housing with high safety factor according to claim 1, 2 or 3, characterized in that: The battery housing (1) is made of aluminum or steel.

7. The new energy battery housing with a high safety factor as claimed in claim 6, characterized in that: The battery housing (1) is in the shape of a square box, and the notches (3) and reinforcing ribs (4) are arranged on the side of the battery housing (1).

8. The new energy battery housing with a high safety factor as claimed in claim 6, characterized in that: The battery housing (1) is in the shape of a circular tube, and the notches (3) and reinforcing ribs (4) are arranged on the tube wall and / or the tube cover of the battery housing (1).

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