Ventilation structure, cover plate assembly and energy storage device

Abstract

The utility model provides a ventilation structure, a cover plate assembly and an energy storage device, and relates to the technical field of energy storage. The ventilation structure comprises a protection main body and a holding part, wherein the protection main body is used for covering an anti-explosion valve of the energy storage device; the holding part is arranged on the side, away from the anti-explosion valve, of the protection body, and the holding part is configured to move in the direction away from the anti-explosion valve and used for separating the protection body from the anti-explosion valve. When the protection body needs to be replaced due to sinking or other quality problems, the holding part provides operation positions such as holding for a user, the user pulls the holding part to move in the direction away from the protection body, the holding part drives the protection body to synchronously move, and the protection body is rapidly torn. And by utilizing the holding part, the reworking action of tearing the protection body is conveniently realized, and the reworking efficiency is improved. In the process, a user only directly contacts with the local range of the holding part and does not contact with the protection body, the situation that the anti-explosion valve is scrapped due to misoperation is reduced, and the rejection rate of the anti-explosion valve is reduced.

Description

Technical Field

[0001] This utility model generally relates to the field of energy storage technology, and more specifically, to a breathable structure, a cover plate assembly, and an energy storage device. Background Technology

[0002] Existing batteries have protective patches affixed to the exterior of their explosion-proof valves. After battery manufacturing, an airtightness test is performed, which involves evacuating the battery cell to remove air from the cavity between the protective patch and the explosion-proof valve, creating a vacuum environment. However, after the airtightness test, the air cannot flow back into the cavity, causing the protective patch to dent. When the protective patch is dented, misaligned, has air bubbles at the edges, or contains foreign objects or electrolyte crystallization, it needs to be replaced. Because the protective patch is attached to the sink and the explosion-proof valve's central area is very thin, even slight external force can cause irreparable dents and scratches. Rework easily causes secondary damage to the explosion-proof valve, leading to the scrapping of the finished product. Furthermore, rework is difficult, cumbersome, and inefficient. Utility Model Content

[0003] This utility model provides a breathable structure, cover plate assembly, and energy storage device, which facilitates rework and reduces scrap rate.

[0004] According to a first aspect of the present invention, a breathable structure is provided, comprising:

[0005] The main protective element is used to cover the explosion-proof valve of the energy storage device;

[0006] A gripping part is disposed on the side of the protective body away from the explosion-proof valve. The gripping part is configured to move away from the explosion-proof valve to separate the protective body and the explosion-proof valve.

[0007] In some embodiments, the gripping part is a protrusion that protrudes from the protective body on the side away from the explosion-proof valve;

[0008] Wherein, along the thickness direction of the protective body, the ratio of the height of the holding part to the thickness of the protective body is 4:1 to 10:1.

[0009] In some embodiments, the gripping part is provided with a groove for inserting an auxiliary tool;

[0010] And / or, the gripping part is provided with a first through hole, the first through hole being used to insert an auxiliary tool.

[0011] In some embodiments, the first through-hole extends along the length of the protective body;

[0012] And / or, the first through hole extends along the width direction of the protective body;

[0013] And / or, the first through hole extends along the thickness direction of the protective body;

[0014] The length direction, width direction, and thickness direction of the protective body are all perpendicular to each other.

[0015] In some embodiments, the protective body is provided with an exhaust vent corresponding to the gripping part, and the exhaust vent communicates with the first vent.

[0016] In some embodiments, the protective body and the gripping part are integrally formed.

[0017] According to a second aspect of the present invention, an embodiment of the present invention also provides a cover plate assembly, including a cover plate body, an explosion-proof valve, and a venting structure as described above, wherein the explosion-proof valve is disposed on the cover plate body, and the venting structure is connected to the cover plate body and covers the explosion-proof valve.

[0018] In some embodiments, the breathable structure includes:

[0019] A viewing section is provided corresponding to the explosion-proof valve;

[0020] The mounting part is arranged around the transparent part, and the cover plate body is provided with a mounting groove corresponding to the explosion-proof valve, and the mounting part is disposed in the mounting groove;

[0021] A blocking portion is provided on the edge of the mounting portion away from the viewing portion. The cover plate body is provided with an exhaust groove, and the blocking portion is used to cover at least a portion of the exhaust groove.

[0022] In some embodiments, an exhaust channel is provided between the mounting part, the blocking part and the mounting groove, and the exhaust groove is connected to the exhaust channel.

[0023] In some embodiments, an opening is provided between the mounting portion and the blocking portion, the opening communicating with the side of the exhaust passage away from the exhaust groove.

[0024] In some embodiments, the exhaust passage and the exhaust groove are arranged in an intersecting manner to form a T-shaped structure, an X-shaped structure, or a cross-shaped structure.

[0025] And / or, the number of openings is two, and the two openings are disposed on both sides of the blocking part and connected to both ends of the exhaust passage.

[0026] In some embodiments, along the thickness direction of the protective body, the bottom surface of the blocking part is higher than the bottom surface of the mounting part, so that a step is formed between the blocking part and the mounting part, and the exhaust channel is the enclosing space formed between the bottom and wall of the mounting groove and the step;

[0027] And / or, along the thickness direction of the protective body, the top surface of the mounting portion is flush with the top surface of the cover plate body;

[0028] And / or, along the thickness direction of the protective body, the top surface of the blocking part is higher than the top surface of the mounting part, and the bottom surface of the blocking part is higher than or flush with the top surface of the mounting part;

[0029] And / or, one end of the blocking part is connected to the mounting part, and the other end overlaps the top surface of the cover plate body.

[0030] In some embodiments, the projection of the blocking portion relative to the reference plane and the projection of the mounting groove relative to the reference plane at least partially coincide;

[0031] The reference plane is perpendicular to the thickness direction of the protective body.

[0032] In some embodiments, the exhaust channel includes:

[0033] The first exhaust section extends through the bottom of the mounting groove;

[0034] The second exhaust section communicates with the first exhaust section and penetrates the wall of the mounting groove;

[0035] Wherein, the projection of the second exhaust portion relative to the reference plane is located outside the projection of the mounting portion relative to the reference plane, and the projection of the second exhaust portion relative to the reference plane is located inside the projection of the blocking portion relative to the reference plane.

[0036] According to a third aspect of the present invention, an embodiment of the present invention also provides an energy storage device, including the cover plate assembly as described above.

[0037] One embodiment of this utility model has the following advantages or beneficial effects:

[0038] The ventilated structure provided in this embodiment has a handle on the protective body. When the protective body needs to be replaced due to dents or other quality problems, the handle provides the user with a gripping position. The user pulls the handle to move away from the explosion-proof valve, and the handle drives the protective body to move synchronously, so that the protective body and the explosion-proof valve can be quickly separated.

[0039] The cover plate assembly and energy storage device provided in this embodiment utilize a gripping part to facilitate the rework action of tearing the protective body off the cover plate body, thereby improving rework efficiency. During this process, the user only directly contacts a localized area of ​​the gripping part and does not come into contact with the protective body, reducing the possibility of the explosion-proof valve being scrapped due to operational errors and lowering the scrap rate of the explosion-proof valve. Attached Figure Description

[0040] To better understand this invention, reference can be made to the embodiments shown in the following drawings. Components in the drawings are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of this invention. Furthermore, related elements or components may have different arrangements as known in the art. Additionally, in the drawings, the same reference numerals denote the same or similar components in various figures. The above and other features and advantages of this invention will become more apparent by describing exemplary embodiments of the invention in detail with reference to the drawings.

[0041] in:

[0042] Figure 1 The diagram shown is a structural schematic of a cover plate assembly according to an embodiment of the present invention. Figure 1 ;

[0043] Figure 2 What is shown is Figure 1 A magnified view of section I;

[0044] Figure 3 The diagram shown is a schematic diagram of the cover plate assembly with the ventilation structure concealed according to an embodiment of the present invention;

[0045] Figure 4 What is shown is Figure 3 A magnified view of section III;

[0046] Figure 5 What is shown is Figure 4 A magnified view of section IV;

[0047] Figure 6 What is shown is Figure 1 A magnified view of section II;

[0048] Figure 7 The diagram shown is a structural schematic of a cover plate assembly according to an embodiment of the present invention. Figure 2 ;

[0049] Figure 8 What is shown is Figure 7 Sectional view at AA;

[0050] Figure 9 What is shown is Figure 8 A magnified view of section V;

[0051] Figure 10 What is shown is Figure 7 Sectional view at CC;

[0052] Figure 11 What is shown is Figure 10 A magnified view of section VI;

[0053] Figure 12 What is shown is Figure 7 Sectional view at BB;

[0054] Figure 13 What is shown is Figure 12 A magnified view of section VII.

[0055] The reference numerals in the attached figures are explained as follows:

[0056] 100. Cover plate body; 200. Explosion-proof valve; 300. Ventilation structure;

[0057] 101. Mounting slot; 102. Exhaust passage; 103. Exhaust groove; 1031. First exhaust section; 1032. Second exhaust section;

[0058] 1. Protect the main body; 2. Control the part;

[0059] 10. Vent hole; 11. Viewing section; 12. Mounting section; 13. Blocking section; 120. Opening;

[0060] 21. First through hole. Detailed Implementation

[0061] The technical solutions of the exemplary embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of this utility model.

[0062] In the description of this utility model, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more; and the term "and / or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the / described" object or "an" object are also intended to indicate one of a possible plurality of such objects.

[0063] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] Furthermore, in the description of this utility model, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this utility model. It should also be understood that, in the context, when an element or feature is mentioned as being "upper," "lower," "inner," or "outer" of another element (one or more), it can be directly connected to the other element (one or more) "upper," "lower," "inner," or "outer," or it can be indirectly connected to the other element (one or more) "upper," "lower," "inner," or "outer" through an intermediate element.

[0065] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0066] A rechargeable battery is an energy storage device, also known as a rechargeable battery or accumulator. It is a battery that can be recharged after being discharged, allowing the active materials to be reactivated and reused. The recyclable nature of rechargeable batteries has made them a primary power source for electrical equipment. As the demand for rechargeable batteries increases, higher requirements are being placed on their energy density, reliability, and cost.

[0067] This embodiment provides an energy storage device, which includes a battery cell, a housing, and a cover assembly. One end of the housing has an opening, and the cover assembly covers the opening, sealing it. A cavity is formed between the housing and the cover assembly to house the battery cell, and the housing and cover assembly protect the battery cell.

[0068] This embodiment provides a cover plate assembly, such as Figures 1-3As shown, the cover plate assembly includes a cover plate body 100, an explosion-proof valve 200, and a venting structure 300. The explosion-proof valve 200 is disposed on the cover plate body 100, and the venting structure 300 is connected to the cover plate body 100 and covers the explosion-proof valve 200.

[0069] Among them, the ventilated structure 300 can also be called the explosion-proof valve protective patch. The ventilated structure 300 covers the explosion-proof valve 200. The ventilated structure 300 can balance the pressure difference inside and outside the explosion-proof valve 200, realize the ventilated effect of the explosion-proof valve 200, and prevent the electrolyte from entering the explosion-proof valve 200 and causing corrosion, thus realizing the isolation protection of the explosion-proof valve 200.

[0070] After the cover plate assembly is manufactured, an airtightness test is required. This involves drawing a vacuum outside the battery cell to remove air from between the vent structure 300 and the explosion-proof valve 200, creating a vacuum environment in the cavity between them. However, after the test, the air cannot flow back into the cavity, causing the vent structure 300 to dent towards the cover plate body 100, necessitating its immediate replacement. During disassembly and replacement, the explosion-proof valve 200's thin-walled area is very thin, and operators unfamiliar with rework techniques are prone to damaging it. Even slight external forces can cause irreparable dents and scratches on the explosion-proof valve 200, increasing the scrap rate and affecting the rework efficiency of the vent structure 300.

[0071] To solve this problem, such as Figures 1-2 As shown, this embodiment provides a ventilated structure 300, which includes a protective body 1 and a gripping part 2. The protective body 1 is used to cover the explosion-proof valve 200 of the energy storage device. The gripping part 2 is disposed on the side of the protective body 1 away from the explosion-proof valve 200, and the gripping part 2 is configured to move in a direction away from the explosion-proof valve 200 to separate the protective body 1 and the explosion-proof valve 200.

[0072] For example, both the explosion-proof valve 200 and the protective body 1 have a racetrack-like shape. The shapes of the protective body 1 and the explosion-proof valve 200 are adapted to each other, so that the protective body 1 can cover the entire explosion-proof valve 200 as much as possible. The length direction of the protective body 1 is identified by L, the width direction by B, and the thickness direction by H. The length direction, width direction, and thickness direction of the protective body 1 are perpendicular to each other.

[0073] For example, the gripping part 2 can be located at the center or edge of the protective body 1. The cross-section of the gripping part 2 can be square, circular, elliptical, or other regular or irregular structures. The gripping part 2 can be a protrusion on the protective body 1. The ratio of the height of the gripping part 2 to the thickness of the protective body 1 is 4:1 to 10:1, that is, the gripping part 2 protrudes a certain height from the surface of the protective body 1 on the side away from the explosion-proof valve 200, and the height difference between the gripping part 2 and the protective body 1 facilitates the user's grip.

[0074] Of course, in some other embodiments, the grip 2 can be a groove located on the side of the protective body 1 away from the explosion-proof valve. Specifically, the surface of the protective body 1 is recessed towards the explosion-proof valve 200 to form a groove. The user can use the height difference between the groove and the protective body 1 as a handle for easy gripping. In this embodiment, the grip 2 is a rectangular protrusion located in the middle of the protective body 1. The shape and position of the grip 2 can be adjusted according to actual production conditions.

[0075] The ventilated structure 300 provided in this embodiment includes a handle 2 on the protective body 1. When the protective body 1 needs to be replaced due to dents or other quality issues, the handle 2 provides a gripping position for the user. The user pulls the handle 2 away from the explosion-proof valve 200, causing the handle 2 to move synchronously with the protective body 1, allowing it to be quickly torn open. The handle 2 facilitates the rework process of tearing open the protective body 1, improving rework efficiency. During this process, the user only directly contacts a localized area of ​​the handle 2 and does not directly contact the protective body 1, reducing the likelihood of the explosion-proof valve 200 being scrapped due to operational errors and lowering its scrap rate.

[0076] Specifically, such as Figures 1-2 As shown, the handle 2 is a protruding part on the upper side of the protective body 1 away from the explosion-proof valve 200. That is, the top surface of the handle 2 is slightly higher than the top surface of the protective body 1. The height difference between the handle 2 and the protective body 1 forms a stepped structure, which facilitates lifting or tearing the protective body 1 by hand, and facilitates the separation between the protective body 1 and the explosion-proof valve 200. At the same time, it should also be noted that when the electrolyte splashes out from the injection hole, a small amount of electrolyte will fall on the vent structure 300. The step between the handle 2 and the protective body 1 can effectively prevent the electrolyte from entering the inner cavity of the explosion-proof valve 200.

[0077] Specifically, the gripping part 2 is provided with a first through hole 21, and the gripping part 2 can be referred to as a pull ring. The first through hole 21 is used to thread an auxiliary tool. For example, the auxiliary tool includes, but is not limited to, a hook-shaped tool.

[0078] In other embodiments, the gripping part 2 may also be provided with a groove (not shown in the figure), which is a blind hole provided on the gripping part 2. It is understood that the gripping part 2 may only be provided with the first through hole 21, or only with the groove, or both the first through hole 21 and the groove may be provided. The specific configuration can be adjusted according to the actual production situation.

[0079] For example, the first through hole 21 extends along the length direction of the protective body 1. That is, the depth direction of the first through hole 21 is consistent with the length direction of the protective body 1, and the operating space of the lifting grip 2 is relatively large, making it easier to tear open the protective body 1. For example, the auxiliary tool is a thin rod. The user first passes the thin rod through the first through hole 21 along the length direction (L direction) of the protective body 1, and then holds at least one end of the thin rod along the thickness direction (H direction) of the protective body 1 and lifts it in a direction away from the explosion-proof valve 200 to tear open the protective body 1.

[0080] For example, the first through hole 21 extends along the width direction of the protective body 1. That is, the depth direction of the first through hole 21 is consistent with the width direction of the protective body 1, and the opening direction of the first through hole 21 can be flexibly selected, offering good freedom and flexibility. For example, the auxiliary tool is a thin rod. The user first passes the thin rod through the first through hole 21 along the width direction (B direction) of the protective body 1, and then holds at least one end of the thin rod along the thickness direction (H direction) of the protective body 1 and lifts it away from the explosion-proof valve 200 to tear open the protective body 1.

[0081] For example, the first through hole 21 extends along the thickness direction of the protective body 1. That is, the first through hole 21 can also be formed at the top of the gripping part 2. For example, the auxiliary tool is similar to tweezers or pliers. The user can directly grasp the outer wall of the gripping part 2 and use a hook-shaped tool to insert it into the first through hole 21 along the thickness direction (H direction) of the protective body 1. The hook-shaped tool abuts against the inner wall of the first through hole 21 and is lifted in a direction away from the explosion-proof valve 200 to tear open the protective body 1.

[0082] It is understood that the number of first through holes 21 includes, but is not limited to, one, and the extending direction of the first through hole 21 can be at least one of the length direction of the protective body 1, the width direction of the protective body 1, and the thickness direction of the protective body 1.

[0083] In one embodiment, such as Figures 1-2 As shown, the protective body 1 is provided with an exhaust vent 10 corresponding to the gripping part 2, and the exhaust vent 10 is connected to the first through hole 21.

[0084] For example, the connection between the gripping part 2 and the protective body 1 is provided along the edge of the vent hole 10, and the gripping part 2 covers the vent hole 10. Specifically, the vent hole 10 penetrates the protective body 1 along the thickness direction of the protective body 1, and the first through hole 21 penetrates the gripping part 2 along the length direction of the protective body, that is, the flow paths of gas in the vent hole 10 and the first through hole 21 are perpendicular to each other.

[0085] When heating conditions occur, such as cell aging or high-temperature baking, gas is exhausted through the exhaust port 10 and the first through port 21 to maintain a relatively consistent internal and external air pressure. This prevents damage and failure of the venting structure 300 due to excessive pressure difference or rapid airflow. It should also be noted that when electrolyte splashes from the injection hole, even if some electrolyte lands at the first through port 21, it will adhere to the handle 2 due to surface tension and will not seep into the explosion-proof valve 200 cavity along the exhaust port 10 and the first through port 21, thus reducing the risk of electrolyte entering the explosion-proof valve 200 cavity.

[0086] In one embodiment, the protective body 1 and the gripping part 2 are integrally molded. This integral molding structure reduces the number of parts assembly steps and lowers production costs.

[0087] It should be noted that the protective body 1 can be a planar membrane, on which the holding part 2 and the exhaust hole 10 are simultaneously formed by stretching. Of course, it is not limited to this. In other embodiments of this utility model, the breathable structure 300 can also be manufactured in other ways. This utility model does not limit the specific manufacturing method.

[0088] In one embodiment, such as Figure 1 As shown, the ventilated structure 300 includes a viewing section 11, which is correspondingly arranged with the explosion-proof valve 200. The viewing section 11 can be made of transparent materials such as PPT or PET, and it acts as an observation window, allowing users to directly observe the working status of the explosion-proof valve 200 through the viewing section 11.

[0089] In one embodiment, such as Figure 1 and Figure 3 As shown, the ventilated structure 300 also includes a mounting part 12, which is arranged around the viewing part 11, i.e., the mounting part 12 is an annular structure. The cover plate body 100 is provided with a mounting groove 101 corresponding to the explosion-proof valve 200. The mounting groove 101 is an annular groove, and the mounting part 12 is disposed in the mounting groove 101. Exemplarily, an adhesive layer is provided on the side of the mounting part 12 facing the mounting groove 101, so that the mounting part 12 is fixed in the mounting groove 101 by the adhesive layer, ensuring the fit and fixation effect of the protective body 1.

[0090] Among them, such as Figures 3-5As shown, the cover plate body 100 is provided with an exhaust groove 103, which can be a rectangular groove, trapezoidal groove, or V-shaped groove, etc. When the battery cell is heated due to aging, high-temperature baking, or other processes, it facilitates gas discharge and plays an auxiliary role in venting. However, the existing technology does not isolate and protect the exhaust groove 103, making it prone to foreign object accumulation. Blockage of the exhaust groove 103 can interfere with the burst value of the explosion-proof valve 200, affecting its burst stability to a certain extent.

[0091] To solve this problem, such as Figures 5-6 As shown, the ventilated structure 300 also includes a blocking part 13, which is located on the edge of the mounting part 12 away from the viewing part 11. The cover body 100 is provided with an exhaust groove 103, and the blocking part 13 is used to cover at least part of the exhaust groove 103. With this arrangement, the blocking part 13 can cover the exhaust groove 103, thereby isolating foreign objects, reducing the accumulation of foreign objects in the exhaust groove 103, and preventing the exhaust groove 103 from becoming blocked, thus ensuring the stability of the explosion-proof valve 200 during explosion.

[0092] In one embodiment, the exhaust channel 103 includes a first exhaust portion 1031 and a second exhaust portion 1032. The first exhaust portion 1031 extends through the bottom of the mounting channel 101, and the second exhaust portion 1032 communicates with the first exhaust portion 1031 and extends through the wall of the mounting channel 101. With this configuration, the end of the first exhaust portion 1031 furthest from the second exhaust portion 1032 can also be referred to as the head of the exhaust channel 103, and the second exhaust portion 1032 can also be referred to as the tail of the exhaust channel 103. Gas is transported from the first exhaust portion 1031 to the second exhaust portion 1032 and discharged from the second exhaust portion 1032.

[0093] Specifically, such as Figures 5-9 As shown, a reference plane is selected, which is perpendicular to the thickness direction of the protective body 1. The reference plane is the plane containing the length and width directions of the protective body 1. For example, the reference plane can be the top surface of the cover plate body 100 along the thickness direction of the protective body 1. The projection of the first exhaust portion 1031 relative to the reference plane is at least partially located outside the projection of the mounting portion 12 relative to the reference plane. With this arrangement, the first exhaust portion 1031 is at least partially exposed outside the mounting portion 12, that is, the mounting portion 12 does not completely cover the head of the exhaust groove 103, which facilitates gas to enter the exhaust groove 103 through the head of the exhaust groove 103.

[0094] It is understood that the extension length of the first exhaust portion 1031 can be equal to the width of the mounting groove 101, the width of the mounting portion 12 can be less than the width of the mounting groove 101, and the mounting portion 12 can abut against the side wall of the mounting groove 101 so that the first exhaust portion 1031 is at least partially exposed to the mounting portion 12.

[0095] Specifically, such as Figures 5-9 As shown, the projection of the second exhaust portion 1032 relative to the reference plane is located outside the projection of the mounting portion 12 relative to the reference plane. With this arrangement, the second exhaust portion 1032 is at least partially exposed to the mounting portion 12, that is, the mounting portion 12 does not completely cover the tail of the exhaust channel 103, which facilitates the gas to be discharged to the outside atmosphere through the tail of the exhaust channel 103.

[0096] Although the first exhaust portion 1031 is at least partially exposed to the mounting portion 12, the viewing portion 11 can cover the exposed part of the first exhaust portion 1031. However, the second exhaust portion 1032 may be directly exposed, posing a risk of foreign matter accumulation. Furthermore, during the stamping of the exhaust groove 103 on the cover plate body 100, since the first exhaust portion 1031 penetrates the bottom of the mounting groove 101 and the second exhaust portion 1032 penetrates the groove wall of the mounting groove 101, and the groove wall is relatively thick, the second exhaust portion 1032 is more prone to insufficient effective depth, making it easier for foreign matter to accumulate and affecting the smoothness of gas discharge from the second exhaust portion 1032. Therefore, the stamping depth of the exhaust groove 103 must be subjected to destructive testing, i.e., the exhaust groove 103 needs to be cut open to measure its depth. However, shallow exhaust grooves cannot be identified visually, posing a risk of entering the production line and affecting the yield rate. Moreover, this testing method has high production costs.

[0097] Therefore, such as Figures 5-6 As shown, the projection of the second exhaust portion 1032 relative to the reference plane is located inside the projection of the blocking portion 13 relative to the reference plane.

[0098] In this manner, the blocking part 13 extends along the edge of the mounting part 12 to the second exhaust part 1032, completely covering the second exhaust part 1032 and achieving isolation and protection of the second exhaust part 1032. This prevents foreign objects from entering the second exhaust part 1032 and avoids blockage of the exhaust channel 103. At this time, the entire exhaust channel 103 is leak-proof, further reducing the risk of blockage. It is understandable that even after the exhaust channel 103 is stamped and formed, the second exhaust part 1032 may have insufficient depth. However, because the blocking part 13 can extend to and cover the second exhaust part 1032, it prevents foreign objects from falling into the second exhaust part 1032, solving the problem of foreign object blockage in the shallow second exhaust part 1032. Furthermore, there is no need to cut open the exhaust channel 103 for depth testing, reducing testing costs.

[0099] If the blocking part 13 completely seals the exhaust channel 103, it will affect the smoothness of gas discharge from the exhaust channel 103. To solve this problem, such as Figure 6 and Figures 9-13As shown, an exhaust channel 102 is provided between the blocking part 13 and the mounting groove 101, and the exhaust groove 103 is connected to the exhaust channel 102.

[0100] With this configuration, gas can directly enter the exhaust passage 102 through the first exhaust section 1031 and finally exit from the exhaust passage 102. It is understandable that even if the processing depth of the second exhaust section 1032 is insufficient, or if it is blocked by foreign objects, or if the blocking part 13 completely seals the second exhaust section 1032, the gas will still be discharged from the first exhaust section 1031 through the exhaust passage 102 before it reaches the second exhaust section 1032. In this way, the exhaust passage 102 effectively adds an exhaust path, assisting in gas emission and improving the thoroughness of gas emission.

[0101] The exhaust channel 102 and the exhaust groove 103 are arranged at an angle. That is, the exhaust channel 102 and the exhaust groove 103 are arranged at an angle. The angle between the exhaust channel 102 and the exhaust groove 103 can be 60°, 90°, 120°, etc. In this embodiment, the angle is 90°.

[0102] For example, the projections of the exhaust channel 102 and the exhaust groove 103 onto the reference plane can form a T-shaped structure or a T-shaped structure. While assisting the exhaust groove 103 in exhausting, the exhaust channel 102 also serves to change the exhaust direction of the exhaust groove 103. At this time, the exhaust channel 102 is a single-sided exhaust channel of the exhaust groove 103.

[0103] For example, the projections of the exhaust channel 102 and the exhaust groove 103 onto the reference plane can form an X-shaped or cross-shaped structure. The exhaust channel 102 is divided into two sub-channels by the exhaust groove 103, with the two sub-channels located on both sides of the exhaust groove 103. In this case, the two sub-channels serve as dual exhaust channels for the exhaust groove 103, changing the path of gas from one exhaust groove 103 to allow it to be discharged separately from the two sub-channels, reducing the risk of foreign objects being completely blocked. Furthermore, even if one sub-channel is blocked, the other sub-channel can still perform the exhaust function, with the two sub-channels serving as backup channels for each other.

[0104] In one embodiment, an opening 120 is provided between the mounting portion 12 and the blocking portion 13 (e.g., Figure 6 As shown, the opening 120 is connected to the side of the exhaust passage 102 away from the exhaust groove 103. Exemplarily, the opening 120 is a groove structure formed between the mounting part 12 and the blocking part 13, and the opening 120 can serve as the outlet of the exhaust passage 102, thereby ultimately realizing the release of gas.

[0105] The number of openings 120 is two, and the two openings 120 are disposed on both sides of the blocking part 13 and connected to both ends of the exhaust channel 102. For example, the two openings 120 are respectively connected to two sub-channels, increasing the exhaust outlet of the exhaust channel 102, which is beneficial to improving the gas emission efficiency.

[0106] In one embodiment, such as Figure 9 As shown, along the thickness direction of the protective body 1, the bottom surface of the blocking part 13 is higher than the bottom surface of the mounting part 12, forming a step between the blocking part 13 and the mounting part 12. The exhaust channel 102 is the enclosed space formed by the bottom and wall of the mounting groove 101 and the step. Exemplarily, the exhaust channel 102 is similar to a cuboid structure. The step formed by the blocking part 13 and the mounting part 12 serves as the top and right side of the cuboid structure, and the bottom and wall of the mounting groove 101 serve as the bottom and left side of the cuboid structure. The front and rear sides of the cuboid structure are open and communicate with two openings 120 respectively to achieve final exhaust.

[0107] In this way, the blocking part 13 is raised to a certain height relative to the mounting part 12 in a direction away from the explosion-proof valve 200, so that an exhaust channel 102 is formed between the mounting part 12, the blocking part 13 and the mounting groove 101, avoiding the situation where the closed exhaust groove 103 affects the exhaust. Without changing the structure and process of the existing exhaust groove 103, the exhaust effect can be improved and the modification cost is relatively low.

[0108] Specifically, along the thickness direction of the protective body 1, the top surface of the blocking part 13 is higher than the top surface of the mounting part 12, and the bottom surface of the blocking part 13 is higher than or flush with the top surface of the mounting part 12.

[0109] In one embodiment, such as Figure 6 and Figures 9-13 As shown, along the thickness direction of the protective body 1, the top surface of the mounting part 12 is flush with the top surface of the cover plate body 100. That is, the mounting part 12 is embedded in the mounting groove 101, so that the top surfaces of the mounting part 12 and the cover plate body 100 are a neat plane, improving the overall aesthetics and consistency.

[0110] In one embodiment, such as Figures 6-13 As shown, one end of the blocking part 13 is connected to the mounting part 12, and the other end overlaps the top surface of the cover plate body 100 to prevent the other end of the blocking part 13 from being suspended. The top surface of the cover plate body 100 provides a certain support for the blocking part 13, thereby improving the positional stability of the blocking part 13.

[0111] It is understandable that in some other embodiments, the other end of the blocking part 13 does not overlap the top surface of the cover plate body 100, and there is a certain height distance between the blocking part 13 and the cover plate body 100, that is, the other end of the blocking part 13 is suspended in the air. In this case, the blocking part 13 does not completely block the second exhaust part 1032. Alternatively, the projection of the blocking part 13 on the reference plane and the projection of the second exhaust part 1032 on the reference plane may overlap, so that the blocking part 13 at least partially covers and blocks the second exhaust part 1032. In this case, the second exhaust part 1032 still has a certain exhaust function.

[0112] If the blocking part 13 is completely outside the mounting groove 101 and the blocking part 13 and the mounting groove 101 are completely misaligned, then the blocking part 13 can only cover the second exhaust part 1032 of the exhaust groove 103 and cannot effectively take into account the exhaust effect.

[0113] Therefore, the projection of the blocking part 13 relative to the reference plane and the projection of the mounting groove 101 relative to the reference plane at least partially overlap. That is, one end of the blocking part 13 extends into the mounting groove 101, and there is an overlapping portion between the blocking part 13 and the mounting groove 101. The space between the overlapping portion of the blocking part 13 and the mounting groove 101 and the bottom and side walls of the mounting groove 101 constitutes the aforementioned exhaust channel 102. With this configuration, the blocking part 13 can both cover the second exhaust part 1032 and perform the exhaust function, achieving a dual functionality and strong versatility.

[0114] It should be noted that the embodiments of this utility model are merely one example of the principles employed by the present utility model, as shown in the accompanying drawings and described herein. Those skilled in the art will clearly understand that the principles of this utility model are not limited to any details or components of the apparatus shown in the accompanying drawings or described in the specification.

[0115] It should be understood that this invention is not limited to the detailed structure and arrangement of the components described herein. This invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of this invention. The embodiments described in this specification illustrate the best known mode for implementing this invention and will enable those skilled in the art to utilize this invention.

[0116] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and exemplary embodiments are to be considered as exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0117] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of this utility model is limited only by the appended claims.

Claims

1. A breathable structure, characterized in that, include: The main body (1) is used to cover the explosion-proof valve (200) of the energy storage device; A gripping part (2) is provided on the side of the protective body (1) away from the explosion-proof valve (200). The gripping part (2) is configured to move away from the explosion-proof valve (200) to separate the protective body (1) and the explosion-proof valve (200).

2. The breathable structure according to claim 1, characterized in that, The gripping part (2) is a protrusion that protrudes from the protective body (1) on the side away from the explosion-proof valve (200); Along the thickness direction of the protective body (1), the ratio of the height of the holding part (2) to the thickness of the protective body (1) is 4:1 to 10:

1.

3. The breathable structure according to claim 2, characterized in that, The gripping part (2) is provided with a groove; And / or, the holding part (2) is provided with a first through hole (21).

4. The breathable structure according to claim 3, characterized in that, The first through hole (21) extends along the length direction of the protective body (1); And / or, the first through hole (21) extends along the width direction of the protective body (1); And / or, the first through hole (21) extends along the thickness direction of the protective body (1); The length direction, width direction, and thickness direction of the protective body (1) are all perpendicular to each other.

5. The breathable structure according to claim 3, characterized in that, The protective body (1) is provided with an exhaust hole (10) corresponding to the gripping part (2), and the exhaust hole (10) is connected to the first through hole (21).

6. A cover plate assembly, characterized in that, It includes a cover plate body (100), an explosion-proof valve (200), and a ventilated structure as described in any one of claims 1-5, wherein the explosion-proof valve (200) is disposed on the cover plate body (100), and the ventilated structure is connected to the cover plate body (100) and covers the explosion-proof valve (200).

7. The cover plate assembly according to claim 6, characterized in that, The breathable structure includes: A viewing section (11) is provided corresponding to the explosion-proof valve (200); The mounting part (12) is arranged around the viewing part (11). The cover plate body (100) is provided with a mounting groove (101) corresponding to the explosion-proof valve (200). The mounting part (12) is disposed in the mounting groove (101). A blocking part (13) is provided on the edge of the mounting part (12) away from the viewing part (11). The cover plate body (100) is provided with an exhaust groove (103). The blocking part (13) is used to cover at least part of the exhaust groove (103).

8. The cover plate assembly according to claim 7, characterized in that, An exhaust channel (102) is provided between the mounting part (12), the blocking part (13) and the mounting groove (101), and the exhaust groove (103) is connected to the exhaust channel (102).

9. The cover plate assembly according to claim 8, characterized in that, An opening (120) is provided between the mounting part (12) and the blocking part (13), and the opening (120) is connected to the side of the exhaust channel (102) away from the exhaust groove (103).

10. The cover plate assembly according to claim 9, characterized in that, The exhaust channel (102) and the exhaust groove (103) are arranged in a cross shape to form a T-shaped structure, an X-shaped structure, or a cross-shaped structure.

11. The cover plate assembly according to claim 8, characterized in that, Along the thickness direction of the protective body (1), the bottom surface of the blocking part (13) is higher than the bottom surface of the mounting part (12), so that a step is formed between the blocking part (13) and the mounting part (12), and the exhaust channel (102) is the enclosed space formed by the bottom and wall of the mounting groove (101) and the step; And / or, along the thickness direction of the protective body (1), the top surface of the blocking part (13) is higher than the top surface of the mounting part (12), and the bottom surface of the blocking part (13) is higher than or flush with the top surface of the mounting part (12); And / or, along the thickness direction of the protective body (1), the top surface of the mounting part (12) is flush with the top surface of the cover plate body (100); And / or, one end of the blocking part (13) is connected to the mounting part (12), and the other end overlaps the top surface of the cover plate body (100).

12. The cover plate assembly according to claim 7, characterized in that, The projection of the blocking part (13) relative to the reference plane and the projection of the mounting groove (101) relative to the reference plane at least partially overlap; The reference plane is perpendicular to the thickness direction of the protective body (1).

13. The cover plate assembly according to claim 7, characterized in that, The exhaust channel (103) includes: The first exhaust section (1031) extends through the bottom of the mounting groove (101); The second exhaust section (1032) communicates with the first exhaust section (1031) and penetrates the groove wall of the mounting groove (101); The projection of the second exhaust portion (1032) relative to the reference plane is located outside the projection of the mounting portion (12) relative to the reference plane, and the projection of the second exhaust portion (1032) relative to the reference plane is located inside the projection of the blocking portion (13) relative to the reference plane.

14. An energy storage device, characterized in that, Includes the cover plate assembly as described in any one of claims 6-13.

Images