Battery cell shell and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cell shell and a battery, the battery cell shell is connected with a battery cell, the battery cell shell comprises a shell body, an anti-explosion valve and at least two reinforcing ribs, the anti-explosion valve is arranged on the bottom surface of the shell body, and the length direction of the anti-explosion valve is parallel to the length direction of the bottom surface of the shell body; the reinforcing ribs are arranged on the bottom face of the shell body at intervals, and the reinforcing ribs and the anti-explosion valve are arranged at intervals. Therefore, the reinforcing ribs connected with the bottom surface of the shell body can improve the non-deformability of the bottom surface of the shell body, so that the bottom surface of the shell body is prevented from being pulled and deformed by the expanded and deformed side wall in the charge-discharge cycle gas production process of the battery cell, and the phenomenon that the bottom surface of the shell body pulls the edge of the explosion-proof valve to cause liquid leakage at the nick of the explosion-proof valve is avoided; the safety performance of the battery is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a cell casing and a battery. Background Technology

[0002] With the increasing maturity of lithium-ion battery technology, lithium-ion batteries are widely used as power batteries in electric vehicles and energy storage. In order to ensure the safe operation of lithium-ion batteries, explosion-proof valves are usually installed on their casings so that when thermal runaway occurs, the gas generated inside the battery can be quickly discharged to the outside through the explosion-proof valve, thereby avoiding excessive pressure inside the battery.

[0003] The explosion-proof valve of a long-cell lithium-ion battery is usually located at the bottom of the casing to achieve thermal and electrical separation. However, during the charge and discharge cycle of the cell, the sidewall of the casing may expand and deform. Since the bottom surface of the existing casing is relatively thin, the expansion and deformation of the sidewall may cause the bottom surface of the casing to deform and pull on the explosion-proof valve, resulting in leakage at the groove of the explosion-proof valve, thereby affecting the safety performance of the battery. Utility Model Content

[0004] The purpose of this utility model is to provide a cell housing and battery to solve the problem of poor deformation resistance of the bottom surface of the housing.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, a battery cell housing is connected to a battery cell. The battery cell housing includes: a housing body and an explosion-proof valve, wherein the explosion-proof valve is disposed on the bottom surface of the housing body and the length direction of the explosion-proof valve is parallel to the length direction of the bottom surface of the housing body; and at least two reinforcing ribs, wherein the reinforcing ribs are spaced apart on the bottom surface of the housing body and the reinforcing ribs are spaced apart from the explosion-proof valve.

[0007] Preferably, the length direction of the reinforcing rib is perpendicular to the length direction of the explosion-proof valve.

[0008] Preferably, the reinforcing ribs are symmetrically arranged on both sides of the explosion-proof valve along its length.

[0009] Preferably, the reinforcing rib is stamped onto the bottom surface of the shell body.

[0010] Preferably, the reinforcing rib is disposed on the bottom surface of the housing body on the side opposite to the battery cell.

[0011] Preferably, the cross-sectional shape of the reinforcing rib is square; and / or, the cross-sectional shape of the reinforcing rib is semi-circular.

[0012] Preferably, the height of the reinforcing rib is in the range of 0.3mm-2mm; and / or, the width of the reinforcing rib is in the range of 2mm-8mm.

[0013] Preferably, the length of the reinforcing rib is H, and the width of the bottom surface of the shell body is W, satisfying 0.5≤H / W≤0.8.

[0014] Preferably, the number of reinforcing ribs is even.

[0015] In a second aspect, a battery includes a cell, a cover plate, and a cell housing as described above, wherein the housing body is connected to both the cell and the cover plate.

[0016] The beneficial effects of this utility model are:

[0017] A battery cell housing includes a housing body, an explosion-proof valve, and at least two reinforcing ribs. The explosion-proof valve is disposed on the bottom surface of the housing body, and the length direction of the explosion-proof valve is parallel to the length direction of the bottom surface of the housing body. The reinforcing ribs are spaced apart on the bottom surface of the housing body, and the reinforcing ribs are spaced apart from the explosion-proof valve.

[0018] Thus, the reinforcing ribs set on the bottom surface of the casing can enhance the structural strength of the casing. The spaced reinforcing ribs can disperse the tensile force from the side wall of the casing, avoid stress concentration, and make the bottom surface of the casing less susceptible to the effects of the expanding and deforming side wall when the battery cell generates gas during charging and discharging cycles. This prevents leakage and damage to the explosion-proof valve after it is stretched, improves battery safety, and extends the service life of the explosion-proof valve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the battery cell housing in one embodiment of the present invention;

[0020] Figure 2 This is a top view of the battery cell housing in one embodiment of the present invention;

[0021] Figure 3 This is a first partial sectional view of the reinforcing rib in one embodiment of the present invention;

[0022] Figure 4 This is a second partial sectional view of the reinforcing rib in one embodiment of the present invention.

[0023] In the picture:

[0024] 1. Shell body; 2. Explosion-proof valve; 3. Reinforcing ribs. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0029] Example 1

[0030] See Figure 1 and Figure 2 This utility model provides a battery cell housing connected to a battery cell (not shown in the figure). The battery cell housing includes a housing body 1, an explosion-proof valve 2, and at least two reinforcing ribs 3. The explosion-proof valve 2 is disposed on the bottom surface of the housing body 1, and the length direction of the explosion-proof valve 2 is parallel to the length direction of the bottom surface of the housing body 1 (that is, the length direction of the battery cell). The reinforcing ribs 3 are spaced apart on the bottom surface of the housing body 1, and the reinforcing ribs 3 are spaced apart from the explosion-proof valve 2.

[0031] In this embodiment, the length of the housing body 1 is in the range of 200mm-300mm. The length of the housing body 1 can be any value between 200mm-300mm or any range between two values. For example, the length of the housing body 1 can be 200mm, 220mm, 250mm, 280mm, 300mm, etc.

[0032] Furthermore, the bottom surface of the housing body 1 is provided with an explosion-proof valve mounting hole (not shown in the figure), and the explosion-proof valve 2 is fixedly installed in the explosion-proof valve mounting hole. The explosion-proof valve 2 has a waist-shaped thin sheet structure, and the shape of the explosion-proof valve mounting hole is adapted to the shape of the explosion-proof valve 2. The reinforcing rib 3 is fixedly connected to the housing body 1, and four reinforcing ribs 3 are provided. The four reinforcing ribs 3 are arranged along the length direction of the housing body 1.

[0033] Thus, by placing the reinforcing rib 3 on the bottom surface of the housing body 1, the structural strength of the bottom surface of the housing body 1 can be enhanced, thereby improving the deformation resistance of the bottom surface of the housing body 1. When the battery cell generates gas during charging and discharging cycles, the bottom surface of the housing body 1 is not easily pulled and deformed by the expanding and deforming side wall, thus avoiding the bottom surface of the housing body 1 pulling on the edge of the explosion-proof valve 2 and causing leakage at the groove of the explosion-proof valve 2, thereby improving the safety performance of the battery. The multiple explosion-proof valves 2 are spaced apart, which can uniformly improve the structural strength of each position on the bottom surface of the housing body 1 and facilitate the dispersion of the tensile force from the side wall of the housing body 1.

[0034] It is understood that the number of reinforcing ribs 3 is not limited to four. The position and number of reinforcing ribs 3 can be adjusted according to actual needs. In this embodiment, the reinforcing ribs 3 are spaced apart from the explosion-proof valve 2 in order to avoid affecting the exhaust performance of the explosion-proof valve 2 by being too close to it, so that the explosion-proof valve 2 can exhaust smoothly.

[0035] See Figure 2 In some embodiments, the length direction of the reinforcing rib 3 is perpendicular to the length direction of the explosion-proof valve 2, that is, the reinforcing rib 3 extends along the width direction of the housing body 1. In this embodiment, the reinforcing rib 3 is a strip structure, and the four reinforcing ribs 3 are arranged in parallel.

[0036] Thus, the reinforcing rib 3 is set perpendicular to the explosion-proof valve 2, which can make full use of the space on the bottom surface of the housing body 1, increase the number of reinforcing ribs 3 that can be installed, thereby increasing the area of ​​the reinforcing ribs 3, improving the structural strength and rigidity of the bottom surface of the housing body 1 in the width direction, and improving the deformation resistance of the bottom surface of the housing body 1; when the battery cell generates gas during charging and discharging cycles, the reinforcing rib 3 can disperse the stress generated when the housing body 1 deforms, enabling the housing body 1 to withstand a greater load, preventing the bottom surface of the housing body 1 from deforming and pulling the explosion-proof valve 2, extending the service life of the explosion-proof valve 2, and improving the safety performance of the battery.

[0037] It is understandable that the reinforcing rib 3 can also be inclined on the bottom surface of the shell body 1, or it can be parallel to the explosion-proof valve 2. The extension direction of the reinforcing rib 3 can be adjusted according to the design requirements, which will not be listed in detail here.

[0038] See Figure 2 In some embodiments, the reinforcing ribs 3 are symmetrically arranged on both sides of the explosion-proof valve 2 along its length.

[0039] In this embodiment, two reinforcing ribs 3 are respectively provided on both sides of the explosion-proof valve 2 along its length. The reinforcing ribs 3 that are provided towards the two ends of the bottom surface of the housing body 1 are spaced apart from the two ends of the housing body 1. That is, there is a distance between the two ends of the bottom surface of the housing body 1 and the reinforcing ribs 3.

[0040] Thus, the symmetrically arranged reinforcing ribs 3 can enhance the local structural strength of the bottom surface of the housing body 1 at both ends of the explosion-proof valve 2, dispersing the stress generated when the housing sidewall deforms to a larger area, avoiding stress concentration near the explosion-proof valve 2. This makes the explosion-proof valve 2 less susceptible to tensile forces generated when the bottom surface of the housing body 1 deforms, preventing deformation and leakage at the scoring of the explosion-proof valve 2, which helps maintain the structural integrity of the bottom surface of the housing body 1 and improves the safety performance of the battery. Furthermore, the symmetrically arranged reinforcing ribs 3 can prevent the explosion-proof valve 2 from shifting position or changing shape due to the deformation of the housing body 1, which is conducive to the stable venting of the explosion-proof valve 2, enhances the stability of the explosion-proof valve 2 on the housing body 1, and extends the service life of the explosion-proof valve 2.

[0041] It is understandable that the position of the reinforcing rib 3 can be adjusted according to the position of the explosion-proof valve 2 on the bottom surface of the housing body 1, which will not be elaborated here.

[0042] See Figure 2 In some embodiments, the reinforcing rib 3 is stamped onto the bottom surface of the housing body 1.

[0043] Thus, by forming the reinforcing rib 3 through stamping, not only can the reinforcing rib 3 be integrally formed with the shell body 1, improving the overall integrity of the shell body 1, but it can also reduce the stress at the connection between the reinforcing rib 3 and the shell body 1, making it easier for the reinforcing rib 3 to better distribute stress and avoid local deformation. The integral forming of the reinforcing rib 3 and the shell body 1 can improve the rigidity and structural strength of the bottom surface of the shell body 1, thereby improving the deformation resistance of the bottom surface of the shell body 1. When the battery cell generates gas during charging and discharging cycles, the bottom surface of the shell body 1 is not easily stretched and deformed by the side wall. It also improves the structural strength at the connection between the explosion-proof valve 2 and the bottom surface of the shell body 1, making the shell body 1 less likely to deform due to internal pressure changes during charging and discharging. Furthermore, it can maintain the sealing at the connection between the shell body 1 and the reinforcing rib 3, preventing gas leakage and improving the safety and stability of the battery.

[0044] It is understandable that the reinforcing rib 3 can also be fixed to the bottom surface of the smooth shell body 1 by welding or other means. In this embodiment, the stamping method is adopted to facilitate processing and maintain the sealing performance of the shell body 1. The connection method between the reinforcing rib 3 and the shell body 1 can be adjusted according to actual needs, which will not be elaborated here.

[0045] See Figure 1 In some embodiments, the reinforcing rib 3 is disposed on the bottom surface of the housing body 1 away from the battery cell. That is, the reinforcing rib 3 extends in the direction towards the outside, and the bottom surface of the housing body 1 facing the battery cell is recessed at the position of the reinforcing rib 3.

[0046] Thus, the reinforcing rib 3 extends outward, which can avoid occupying the internal space of the casing body 1, reduce interference with the battery cell, provide more space for the internal structure of the battery, make the overall battery structure more compact, and make the stress distribution on the bottom surface of the casing body 1 more uniform when subjected to force without increasing the overall thickness of the casing body 1, thereby improving the deformation resistance of the bottom surface of the casing body 1. It can not only disperse the stress on the bottom surface of the casing body 1 when the battery cell generates gas during charging and discharging cycles, but also reduce the impact of external forces on the bottom surface of the casing body 1, thereby preventing the explosion-proof valve 2 from being pulled by the bottom surface of the casing body 1, resulting in leakage, damage, etc.

[0047] It is understandable that the reinforcing rib 3 can also extend towards the direction of the battery cell. In this embodiment, the reinforcing rib 3 extends towards the outside, which can not only save the internal space of the housing body 1, but also disperse the stress inside the housing body 1, avoid stress concentration at the connection between the bottom surface and the side wall of the housing body 1, and enhance the support capacity of the bottom surface of the housing body 1, thereby improving the stability and safety of the battery.

[0048] See Figure 3 In some embodiments, the cross-sectional shape of the reinforcing rib 3 is square. In this embodiment, the connection between the reinforcing rib 3 and the bottom surface of the shell body 1 is smoothly transitioned, and the cross-sectional shape of the four reinforcing ribs 3 is the same.

[0049] Thus, the square cross-sectional shape of the reinforcing rib 3 makes the structure of the reinforcing rib 3 more stable and enhances the structural strength of the bottom surface of the shell body 1. When the cell generates gas during charging and discharging cycles, even if the side wall of the shell body 1 expands and deforms, the force on the bottom surface of the shell body 1 can be evenly distributed by the reinforcing rib 3, reducing the stress concentration phenomenon on the bottom surface of the shell body 1, improving the deformation resistance of the bottom surface of the shell body 1, preventing the explosion-proof valve 2 from being pulled by the bottom surface of the shell body 1 and causing leakage or damage, ensuring that the explosion-proof valve 2 can maintain a sealed connection with the bottom surface of the shell body 1 during the charging and discharging cycles of the cell, and improving the safety of the battery.

[0050] Understandably, see Figure 4The cross-sectional shape of the reinforcing rib 3 can also be a semi-circular or triangular shape that is easy to stamp. The cross-sectional shapes of the four reinforcing ribs 3 can also be different. The cross-sectional shape of each reinforcing rib 3 can be adjusted according to the actual design needs and the stress on the bottom surface of the shell body 1. Not much will be listed here.

[0051] See Figure 1 In some embodiments, the height of the reinforcing rib 3 is in the range of 0.3mm-2mm, and the width of the reinforcing rib 3 is in the range of 2mm-8mm.

[0052] In this embodiment, the protrusion height of the reinforcing rib 3 can be any value between 0.3mm and 2mm or any two values. For example, the protrusion height of the reinforcing rib 3 can be 0.3mm, 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, etc.; the width of the reinforcing rib 3 can be any value between 2mm and 8mm or any two values. For example, the width of the reinforcing rib 3 can be 2mm, 3mm, 5mm, 7mm, 8mm, etc.

[0053] Thus, the height of the reinforcing rib 3 is within the range of 0.3mm-2mm, which not only facilitates the stamping of the bottom surface of the shell body 1 to form the reinforcing rib 3, but also avoids the impact on the structural strength of the bottom surface of the shell body 1 during the stamping process due to the excessive height of the reinforcing rib 3. While improving the structural strength of the bottom surface of the shell body 1, it also improves the stability of the connection between the reinforcing rib 3 and the shell body 1. The reinforcing rib 3 has sufficient height and width to make the stress distribution more uniform and dispersed, improve the deformation resistance of the bottom surface of the shell body 1, avoid the explosion-proof valve 2 being pulled due to the deformation of the bottom surface of the shell body 1, and extend the service life of the explosion-proof valve 2.

[0054] It is understandable that the height and width of the reinforcing rib 3 can be adjusted according to the dimensions of the bottom surface of the shell body 1. For example, the wider the bottom surface of the shell body 1, the greater the height and width of the reinforcing rib 3, so as to improve the deformation resistance of the bottom surface of the shell body 1. No further examples will be given here.

[0055] Furthermore, the height and width of the four reinforcing ribs 3 may not be equal. In this embodiment, the height and width of each reinforcing rib 3 are equal in order to facilitate processing and to ensure that the bottom surface of the shell body 1 is subjected to uniform force.

[0056] See Figure 2 In some embodiments, the length of the reinforcing rib 3 is H, the width of the bottom surface of the shell body 1 is W, and the condition 0.5≤H / W≤0.8 is met.

[0057] In this embodiment, the ratio of the length H of the reinforcing rib 3 to the width W of the bottom surface of the shell body 1 can be any value between 0.5 and 0.8 or any two values. For example, the ratio of the length H of the reinforcing rib 3 to the width W of the bottom surface of the shell body 1 can be 0.5, 0.6, 0.7, 0.8, etc.

[0058] Thus, the reinforcing rib 3 has sufficient length to form a reasonable stress transmission path. When the bottom surface of the housing body 1 is subjected to external load or internal pressure, the reinforcing rib 3 within this length range can evenly distribute the stress to other areas, avoiding stress concentration at the connection between the explosion-proof valve 2 and the cover body (i.e., at the explosion-proof valve mounting hole). This improves the deformation resistance of the bottom surface of the housing body 1, reduces the situation where the bottom surface of the housing body 1 is deformed during the charging and discharging cycle of the battery cell, thus preventing the explosion-proof valve 2 from being stretched and leaking, and improving the safety performance of the battery.

[0059] Understandably, the ratio of the length H of the reinforcing rib 3 to the width W of the bottom surface of the shell body 1 can be adjusted according to the dimensions of the bottom surface of the shell body 1. If the ratio is less than 0.5, the reinforcing rib 3 may have low strength, which may cause the bottom surface of the shell body 1 to deform under the force from the side wall, reducing the deformation resistance of the bottom surface of the shell body 1. If the ratio is greater than 0.8, the two ends of the reinforcing rib 3 may be close to the edge of the bottom surface of the shell body 1, which is not conducive to the processing of the reinforcing rib 3, and may also cause stress concentration at the connection between the bottom surface of the shell body 1 and the reinforcing rib 3, increasing the area occupied by the reinforcing rib 3 on the bottom surface of the shell body 1.

[0060] See Figure 2 In some embodiments, the number of reinforcing ribs 3 is even. For example, the number of reinforcing ribs 3 may be two or six.

[0061] Thus, the reinforcing ribs 3 are symmetrically arranged on both sides of the length of the explosion-proof valve 2, which can make the bottom surface of the shell body 1 more uniformly stressed and avoid excessive local stress. By increasing the number of reinforcing ribs 3, the overall structural strength of the shell body 1 can be improved. During the charging and discharging cycle of the battery cell, the explosion-proof valve 2 is less likely to be pulled and leak due to the expansion and deformation of the shell sidewall, thus extending the service life of the explosion-proof valve 2.

[0062] It is understandable that the spacing between the reinforcing ribs 3 can be adjusted according to the bottom dimensions of the shell body 1, which will not be elaborated here.

[0063] See Figure 1 This utility model also provides a battery, including a cell, a cover plate and a cell housing, wherein the housing body 1 is connected to both the cell and the cover plate.

[0064] In this embodiment, the cover plate is fixedly connected to the housing body 1, and the battery cell is disposed in the accommodating space formed by the cover plate and the housing body 1.

[0065] In this way, when the battery cell is undergoing charge and discharge cycles, the reinforcing rib 3 can reduce the deformation of the bottom surface of the casing body 1 and prevent the bottom surface of the casing body 1 from being pulled on the explosion-proof valve 2, thereby improving the deformation resistance of the bottom surface of the casing body 1, extending the service life of the explosion-proof valve 2, and improving the safety performance of the battery.

[0066] Example 2

[0067] In Embodiment 2, the same or corresponding components as in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described.

[0068] The difference lies in the fact that, in this embodiment, the length of the housing body 1 is in the range of 300mm-500mm. The length of the housing body 1 can be any value between 300mm-500mm or any range between two values. For example, the length of the housing body 1 can be 300mm, 320mm, 350mm, 380mm, 400mm, 420mm, 450mm, 480mm, 500mm, etc.

[0069] Furthermore, the number of reinforcing ribs 3 is two, four, six, or eight.

[0070] Thus, the reinforcing rib 3 can improve the structural strength of the bottom surface of the shell body 1, avoid stress concentration on the bottom surface of the shell body 1, and improve the deformation resistance of the bottom surface of the shell body 1.

[0071] Example 3

[0072] In Embodiment 3, the same or corresponding components as in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences between Embodiment 3 and Embodiment 1 are described.

[0073] The difference is that, in this embodiment, the length of the housing body 1 is in the range of 500mm-600mm. The length of the housing body 1 can be any value between 500mm and 600mm or any range between two values. For example, the length of the housing body 1 can be 500mm, 520mm, 550mm, 580mm, 600mm, etc.

[0074] Thus, the longer the length of the housing body 1, the more reinforcing ribs 3 are provided, which can help disperse the stress on the bottom surface of the housing body 1, thereby improving the deformation resistance of the bottom surface of the housing body 1. During the charging and discharging cycle of the battery cell, the expansion and deformation of the side wall of the housing body 1 will reduce the impact on the bottom surface of the housing body 1, thereby preventing the bottom surface of the housing body 1 from pulling the explosion-proof valve 2, extending the service life of the explosion-proof valve 2, and improving the safety of the battery.

[0075] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery cell housing, connected to the battery cell, characterized in that, The battery cell housing includes: The shell body (1) and the explosion-proof valve (2) are provided on the bottom surface of the shell body (1), and the length direction of the explosion-proof valve (2) is parallel to the length direction of the bottom surface of the shell body (1). At least two reinforcing ribs (3) are provided at intervals on the bottom surface of the housing body (1), and the reinforcing ribs (3) are provided at intervals with the explosion-proof valve (2).

2. The cell housing according to claim 1, characterized in that, The length direction of the reinforcing rib (3) is perpendicular to the length direction of the explosion-proof valve (2).

3. The cell housing according to claim 1, characterized in that, The reinforcing ribs (3) are symmetrically arranged on both sides of the explosion-proof valve (2) along its length.

4. The cell housing according to claim 1, characterized in that, The reinforcing rib (3) is stamped onto the bottom surface of the shell body (1).

5. The cell housing according to claim 4, characterized in that, The reinforcing rib (3) is disposed on the bottom surface of the housing body (1) on the side opposite to the battery cell.

6. The cell housing according to any one of claims 1-5, characterized in that, The cross-sectional shape of the reinforcing rib (3) is square; and / or, the cross-sectional shape of the reinforcing rib (3) is semi-circular.

7. The cell housing according to any one of claims 1-5, characterized in that, The height of the reinforcing rib (3) ranges from 0.3mm to 2mm; and / or the width of the reinforcing rib (3) ranges from 2mm to 8mm.

8. The cell housing according to any one of claims 1-5, characterized in that, The length of the reinforcing rib (3) is H, and the width of the bottom surface of the shell body (1) is W, and the condition 0.5≤H / W≤0.8 is met.

9. The cell housing according to any one of claims 1-5, characterized in that, The number of the reinforcing ribs (3) is even.

10. A battery, characterized in that, It includes a battery cell, a cover plate, and a battery cell housing as described in any one of claims 1-9, wherein the housing body (1) is connected to both the battery cell and the cover plate.

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