Battery cover plate and battery
By setting up a convex ring and exhaust passage on the battery cover, the problem of the patch being loose when the pressure changes is changed is solved, and the reliable protection of the explosion-proof valve and air pressure balance are achieved, reducing the risk of patch failure.
Patent Information
- Application Number
- CN202422218943.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The patches on the battery cover are easily loosened when the pressure changes alternately in the confined space, resulting in failure of protection of the explosion-proof valve.
A convex ring is provided on the substrate of the battery cover plate, and an exhaust passage is designed on the convex ring, so that the explosion-proof valve and the patch are connected to the outside world through the exhaust passage, adjust the internal pressure balance, prevent the formation of a confined space, and at the same time, the exhaust passage is bent to prevent impurities from entering the installation hole.
It effectively avoids the patch loosening when the pressure changes, ensures the protection effect of the explosion-proof valve, reduces the possibility of patch failure, and maintains air pressure balance.
Smart Images
Figure CN223273376U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of power batteries, and in particular to a battery cover and a battery. Background Art
[0002] Power batteries are the power source for new energy vehicles and other electrical equipment, and can store and release electrical energy.
[0003] The battery includes a battery body and a battery cover arranged on the battery body. An explosion-proof valve is arranged on the battery cover. A patch is provided on the battery cover corresponding to the explosion-proof valve to protect the explosion-proof valve. An enclosed space is formed between the explosion-proof valve and the patch. When the internal pressure of the battery is too high, the explosion-proof valve can open the patch to discharge the high-pressure gas inside the battery.
[0004] However, during the battery manufacturing process, the pressure in the enclosed space changes alternately, which can easily cause the patch to loosen and render the explosion-proof valve ineffective. Utility Model Content
[0005] The embodiments of the present application provide a battery cover and a battery, which are used to solve the technical problem that the protection of the explosion-proof valve by the patch at the explosion-proof valve is easily ineffective.
[0006] In a first aspect, an embodiment of the present application provides a battery cover, comprising a substrate and a raised ring disposed on the substrate, wherein the substrate is provided with a mounting hole for mounting an explosion-proof valve, the raised ring is disposed around the mounting hole, the end surface of the raised ring away from the substrate is used for mounting a patch, and the raised ring is provided with an exhaust channel;
[0007] One port of the exhaust channel is located on the inner wall of the convex ring, and the other port of the exhaust channel is located on the outer wall of the convex ring. The mounting hole is connected to the outside through the exhaust channel in turn, and the exhaust channel is bent to prevent external impurities from entering the mounting hole.
[0008] In a possible embodiment, the battery cover provided in an embodiment of the present application, the exhaust channel includes a first groove and a second groove sequentially opened on the convex ring, the first groove and the second groove are connected to each other, the notch of the first groove is located on the inner wall of the convex ring, the notch of the second groove is located on the outer wall of the convex ring, and the first groove and the second groove are staggered.
[0009] In a possible implementation, in the battery cover provided in an embodiment of the present application, the exhaust channel further includes a third groove provided on the end surface of the convex ring, and the third groove is connected to the first groove and the second groove.
[0010] In a possible implementation, in the battery cover provided in an embodiment of the present application, the bottom of the third groove is located on a side of at least one of the notch of the first groove and the notch of the second groove.
[0011] In a possible implementation, in the battery cover provided in the embodiment of the present application, the notches of the first groove and the notches of the second groove are staggered along the axial direction of the convex ring.
[0012] In a possible implementation, in the battery cover provided in the embodiment of the present application, the notch of the second groove is flush with the surface of the substrate, and the notch of the first groove is spaced apart from the surface of the substrate.
[0013] In a possible implementation, in the battery cover provided in the embodiment of the present application, the first groove and the second groove are alternately arranged along the radial direction of the convex ring.
[0014] In a possible implementation, in the battery cover provided in the embodiment of the present application, at least two second grooves are arranged at intervals, and the intervals between the first grooves and the second grooves are arranged correspondingly.
[0015] In a possible embodiment, the battery cover provided in the embodiment of the present application further comprises a liquid injection port provided on the substrate, the liquid injection port and the mounting hole are spaced apart, at least two exhaust channels are provided, and at least two exhaust channels are respectively provided on opposite sides of the convex ring along the spacing direction between the liquid injection port and the mounting hole.
[0016] In a second aspect, an embodiment of the present application provides a battery, comprising a battery body and any one of the above-mentioned battery covers, wherein the battery cover is connected to the battery body.
[0017] The battery cover and battery provided in the embodiment of the present application are characterized in that the battery cover is provided with a convex ring at a position corresponding to the mounting hole of the explosion-proof valve on the substrate, and an exhaust channel is provided on the convex ring so that the mounting hole on the inner side of the convex ring is connected to the outside world through the exhaust channel. When a patch is affixed to the convex ring, the space between the patch and the explosion-proof valve can adjust the internal pressure through the exhaust channel so that the internal pressure is consistent with the external pressure, thereby avoiding the formation of a closed space between the patch and the explosion-proof valve so that the patch becomes loose when the pressure changes. Since the space between the explosion-proof valve and the patch is connected to the outside world through the exhaust channel, when there are impurities on the outside of the convex ring, the impurities may enter the mounting hole through the exhaust channel, causing the patch protection to fail. For this purpose, the exhaust channel is bent to prevent liquid from entering the mounting hole, but it does not affect the air pressure balance between the mounting hole and the outside world, effectively avoiding the patch from becoming loose while ensuring the protective effect of the patch on the explosion-proof valve, reducing the possibility of patch failure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0019] Figure 1 A schematic diagram of the structure of the battery cover provided in this application;
[0020] Figure 2 for Figure 1 Schematic diagram of the partial disassembly structure of the middle battery cover;
[0021] Figure 3 for Figure 2 Schematic diagram of the structure of the convex ring;
[0022] Figure 4 for Figure 1 A structural diagram of the middle battery cover from another perspective;
[0023] Figure 5 for Figure 4 Cross-sectional view along the AA axis;
[0024] Figure 6 for Figure 5 A partial enlargement of point B in the middle Figure 1 ;
[0025] Figure 7 for Figure 5 A partial enlargement of point B in the middle Figure 2 ;
[0026] Figure 8 for Figure 5 A partial enlargement of point B in the middle Figure 3 ;
[0027] Figure 9 for Figure 5 A partial enlargement of point B in the middle Figure 4 .
[0028] Description of reference numerals:
[0029] 100-base plate; 110-mounting hole; 120-liquid injection port;
[0030] 200-convex ring;
[0031] 300-exhaust channel; 310-first groove; 320-second groove; 330-third groove;
[0032] 400-explosion-proof valve;
[0033] 500-patch.
[0034] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION
[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. The following embodiments and features in the embodiments can be combined with each other unless there is a conflict.
[0036] As described in the background technology, a battery includes a battery body and a battery cover mounted on the battery body. An explosion-proof valve is provided on the battery cover, and a patch is affixed to the battery cover corresponding to the explosion-proof valve to protect the valve and prevent foreign matter from entering the valve and contaminating or damaging it. A sealed space is formed between the explosion-proof valve and the patch. When the internal pressure of the battery is excessive, the explosion-proof valve can open the patch to discharge the high-pressure gas inside the battery. An injection port is provided on one side of the explosion-proof valve, through which electrolyte can be injected into the battery.
[0037] However, during the battery manufacturing process, positive and negative pressures alternate in the confined space. The confined space cannot adjust the pressure changes in a timely and effective manner, which can easily lead to loose patches such as dents, warping or falling off. Once the patch becomes loose, the protection of the explosion-proof valve will become ineffective.
[0038] To overcome the deficiencies in the prior art, the battery cover and battery provided in the embodiments of the present application are characterized by providing a convex ring on the substrate at a position corresponding to the explosion-proof valve mounting hole, and providing an exhaust channel on the convex ring. The space between the patch and the explosion-proof valve can adjust the internal pressure through the exhaust channel to make the internal pressure consistent with the external pressure, thereby avoiding the formation of a closed space between the patch and the explosion-proof valve, which may cause the patch to loosen when the pressure changes. The buffer portion of the exhaust channel is offset relative to the first connecting port and the second connecting port, so that the buffer portion blocks liquid from entering the mounting hole, but does not affect the air pressure balance between the mounting hole and the outside world. This effectively prevents the patch from loosening while ensuring the patch's protective effect on the explosion-proof valve and reduces the possibility of patch failure.
[0039] The content of the utility model will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the content of the utility model more clearly and in detail.
[0040] Reference Figures 1 to 4 As shown, the embodiment of the present application provides a battery cover, including a substrate 100 and a convex ring 200 provided on the substrate 100. The substrate 100 is provided with a mounting hole 110 for mounting an explosion-proof valve 400. The convex ring 200 is arranged around the circumference of the mounting hole 110. The end surface of the convex ring 200 away from the substrate 100 is used for mounting a patch 500. The convex ring 200 is provided with an exhaust channel 300.
[0041] One end of the exhaust channel 300 is located on the inner wall of the convex ring 200, and the other end of the exhaust channel 300 is located on the outer wall of the convex ring 200. The mounting hole 110 is connected to the outside through the exhaust channel 300. The exhaust channel 300 is bent to prevent external impurities from entering the mounting hole 110.
[0042] A mounting hole 110 is provided on the substrate 100, and an explosion-proof valve 400 is disposed within the mounting hole 110. Specifically, a stopper is provided on the substrate 100 at a position corresponding to the mounting hole 110, and the explosion-proof valve 400 is welded to the mounting hole 110 via the stopper. When the pressure inside the battery exceeds a set safety range, the explosion-proof valve 400 is activated. At this time, the valve core of the explosion-proof valve 400 is pushed open by the internal pressure, overcoming the elastic force of the spring, opening the valve and releasing the gas inside. When the internal pressure of the battery decreases, the spring will reclose the valve core to prevent gas from entering the battery again, thereby maintaining the normal working state of the battery.
[0043] A convex ring 200 is provided at the mounting hole 110. The end surface of the convex ring 200 facing away from the substrate 100 is used for attaching the patch 500. Therefore, the convex ring 200 can play a positioning role in the attaching operation of the patch 500, making it easy to determine the relative position of the patch 500 and the explosion-proof valve 400.
[0044] An exhaust channel 300 is provided on the convex ring 200, and the exhaust channel 300 connects the mounting hole 110 with the outside world, so that the mounting hole 110 is connected with the outside world through the exhaust channel 300. When the internal pressure of the space between the patch 500 and the mounting valve changes, the space can exhaust or inhale air to the outside world through the exhaust channel 300 to balance the internal pressure and prevent the patch 500 from becoming loose due to depression, warping or falling off due to pressure changes.
[0045] However, since the mounting hole 110 is connected to the outside world through the exhaust channel 300, external impurities such as electrolyte, water, dust, metal chips, etc. can easily enter the mounting hole 110 through the exhaust channel 300, causing the vulnerable area of the explosion-proof valve 400 to be contaminated and damaged, making the protection of the patch 500 for the explosion-proof valve 400 ineffective. Therefore, the exhaust channel 300 is bent. When external impurities enter the exhaust channel 300, they will be blocked by the bent structure and cannot further enter the mounting hole 110, effectively ensuring the safety and reliability of the explosion-proof valve 400 and preventing the explosion-proof valve 400 from failing.
[0046] Therefore, the battery cover provided in the embodiment of the present application is provided with a convex ring 200 at a position corresponding to the mounting hole 110 of the explosion-proof valve 400 on the substrate 100, and an exhaust channel 300 is provided on the convex ring 200, so that the mounting hole 110 on the inner side of the convex ring 200 is connected to the outside through the exhaust channel 300. In this way, when the patch 500 is affixed to the convex ring 200, the internal pressure of the space between the patch 500 and the explosion-proof valve 400 can be adjusted through the exhaust channel 300 to make the internal pressure consistent with the external pressure, thereby avoiding the formation of a closed space between the patch 500 and the explosion-proof valve 400 so that the patch 500 may loosen when the pressure changes.
[0047] However, since the space between explosion-proof valve 400 and patch 500 is connected to the outside world via exhaust channel 300, if there are impurities on the outside of protruding ring 200, the impurities may enter mounting hole 110 through exhaust channel 300, causing the protective effect of patch 500 to fail. To address this problem, exhaust channel 300 is designed to bend. The bent structure prevents liquid from entering mounting hole 110, but does not affect the air pressure balance between mounting hole 110 and the outside world. This effectively prevents patch 500 from loosening while ensuring the protective effect of patch 500 on explosion-proof valve 400, reducing the possibility of patch 500 failure.
[0048] Reference Figures 1 to 9 As shown, the exhaust channel 300 includes a first groove 310 and a second groove 320 which are sequentially opened on the convex ring 200. The first groove 310 and the second groove 320 are connected to each other. The notch of the first groove 310 is located on the inner wall of the convex ring 200, and the notch of the second groove 320 is located on the outer wall of the convex ring 200. The first groove 310 and the second groove 320 are staggered.
[0049] The first groove 310 is located inside the raised ring 200 and communicates with the mounting hole 110. The second groove 320 is located outside the raised ring 200 and communicates with the outside. The staggered arrangement between the first groove 310 and the second groove 320 allows the exhaust passage 300 to bend, thereby facilitating the blocking of external impurities. In practice, the first groove 310 should be staggered toward the side of the second groove 320 that is away from the substrate 100.
[0050] And, refer to Figures 1 to 8As shown, the exhaust passage 300 further includes a third groove 330 provided on the end surface of the protruding ring 200 , and the third groove 330 is in communication with the first groove 310 and the second groove 320 .
[0051] It is understood that the provision of the third groove 330 can improve the bending degree of the exhaust passage 300, making the structure of the exhaust passage 300 simpler and easier to manufacture. Furthermore, when impurities accumulate in the exhaust passage 300, they can be cleared from the end surface of the convex ring 200 through the notch of the third groove 330, thereby ensuring the reliability of the exhaust passage 300 and the explosion-proof valve 400.
[0052] When setting specific settings, such as Figure 2 and Figure 3 As shown, the extending direction of the third groove 330 is consistent with the extending direction of the protruding ring 200 .
[0053] In addition, when implementing it, refer to Figures 1 to 9 As shown, the bottom of the third groove 330 is located on the side of at least one of the notch of the first groove 310 and the notch of the second groove 320 .
[0054] It can be understood that the bottom of the third groove 330 is located on one side of at least one of the notches of the first groove 310 and the second groove 320, so that the bottom of the first groove 310 can form a depression below the first connecting port and the second connecting port, so that impurities can gather there without entering the mounting hole 110.
[0055] In other embodiments, Figure 9 As shown, the bottom of the third groove 330 is located above the notch of the first groove 310 and the lower edge of the notch of the second groove 320, so that a step surface is formed between the second groove 320 and the third groove 330. The step surface is used to block impurities, and impurities will not accumulate in the third groove 330, avoiding the need to clean the third groove 330, making the maintenance of the battery cover more convenient.
[0056] Furthermore, in some embodiments, reference Figure 6 and Figure 7 As shown, the first groove 310 and the second groove 320 are staggered along the axial direction of the protruding ring 200 .
[0057] By staggering the first groove 310 and the second groove 320 along the axial direction of the convex ring 200, a height difference can be formed between the first groove 310 and the second groove 320. The height difference between the first groove 310 and the second groove 320 is combined with the height difference at the third groove 330, thereby further improving the blocking effect of the exhaust channel 300 on external impurities, effectively preventing external impurities from entering the mounting hole 110, and ensuring the protection effect of the explosion-proof valve 400.
[0058] In specific implementation, refer to Figure 6 and Figure 7 As shown, one side of the second groove 320 is flush with the surface of the substrate 100, and the first groove 310 is spaced apart from the surface of the substrate 100. This arrangement allows the lower edge of the first groove 310 to be higher than the lower edge of the second groove 320, ensuring that the exhaust channel 300 has a blocking effect on external impurities.
[0059] In some other embodiments, it is also possible to Figure 9 As shown, the first groove 310 and the second groove 320 are set flush with the surface of the substrate 100, and external impurities are blocked only by the height difference between the third groove 330 and the first groove 310 and the second groove 320.
[0060] In a specific implementation, the third groove 330 can partially extend onto the substrate 100 to maximize the depth of the third groove 330 and improve the ability to block external impurities. For example, the depth of the third groove 330 does not exceed half the thickness of the substrate 100.
[0061] In addition, the dimensions of the first groove 310, the second groove 320, and the third groove 330 are set. For example, the width of any one of the first groove 310, the second groove 320, and the third groove 330 is set to 0.5-3 mm. For example, the width of any one of the first groove 310, the second groove 320, and the third groove 330 can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. The depth of any one of the first groove 310, the second groove 320, and the third groove 330 is set to between 0.3 and 2.8 mm. For example, the depth of any one of the first groove 310, the second groove 320, and the third groove 330 can be 0.3 mm, 0.7 mm, 1.1 mm, 1.5 mm, 1.9 mm, 2.3 mm, or 2.8 mm. The specific dimensions of the first groove 310, the second groove 320, and the third groove 330 are not limited in this application and can be determined based on the specific dimensions of the protruding ring 200 and the dimensions of the substrate 100.
[0062] In some other embodiments, reference Figures 2 to 4 As shown, the first groove 310 and the second groove 320 are alternately arranged along the radial direction of the protruding ring 200 .
[0063] It can be understood that arranging the first groove 310 and the second groove 320 staggered in the radial direction of the convex ring 200 can further increase the tortuosity of the exhaust channel 300, allowing the gas to flow in and out of the mounting hole 110 unimpeded while preventing external impurities from entering the mounting hole 110.
[0064] In a specific implementation, at least two second grooves 320 are arranged at intervals, and the intervals between the first grooves 310 and the second grooves 320 are arranged correspondingly.
[0065] It can be understood that by arranging two second grooves 320 at intervals, the first groove 310 and the second groove 320 located at the interval can be staggered to achieve a tortuous setting of the exhaust channel 300, and the flow rate of the airflow in the exhaust channel 300 can be increased, so that the exhaust channel 300 can more efficiently and quickly adjust the pressure between the patch 500 and the explosion-proof valve 400 to prevent the patch 500 from loosening.
[0066] In a specific implementation, the interval between the two second grooves 320 can be greater than or equal to the size of the first groove 310, so that the two second grooves 320 are completely staggered with the first groove 310. The interval between the two second grooves 320 can also be set to be smaller than the size of the first groove 310, so that the two second grooves 320 and the first groove 310 partially overlap. This application does not impose any restrictions on this.
[0067] In addition, a liquid injection port 120 is provided on the substrate 100, and the liquid injection port 120 and the mounting hole 110 are spaced apart. At least two exhaust channels 300 are provided, and at least two exhaust channels 300 are respectively provided on opposite sides of the convex ring 200 along the spacing direction between the liquid injection port 120 and the mounting hole 110.
[0068] It is understood that providing two exhaust channels 300 can improve the exhaust channels' ability to regulate the pressure between the patch 500 and the explosion-proof valve 400. The two exhaust channels 300 are located on either side of the gap between the liquid injection port 120 and the mounting hole 110, allowing the two exhaust channels 300 to be relatively far away from the liquid injection port 120, preventing electrolyte leaking from the liquid injection port 120 from directly entering the second groove 320, thereby improving the protection of the explosion-proof valve 400.
[0069] In other embodiments, if only one exhaust channel 300 is provided, the exhaust channel 300 may also be provided on any side of the convex ring 200 that is not facing the liquid injection port 120 in the circumferential direction. This application does not impose any limitation on this.
[0070] An embodiment of the present application further provides a battery, comprising a battery body and the battery cover of any of the above embodiments, wherein the battery cover is connected to the battery body.
[0071] The battery cover has been described in detail in the above embodiments and will not be described again here.
[0072] The battery provided in the embodiment of the present application is provided with a battery cover, and the battery cover is provided with a convex ring 200 at a position corresponding to the mounting hole 110 of the explosion-proof valve 400 on the substrate 100, and an exhaust channel 300 is provided on the convex ring 200, so that the mounting hole 110 on the inner side of the convex ring 200 is connected to the outside world through the exhaust channel 300. In this way, when the patch 500 is affixed to the convex ring 200, the internal pressure of the space between the patch 500 and the explosion-proof valve 400 can be adjusted through the exhaust channel 300 to make the internal pressure consistent with the external pressure, thereby avoiding the formation of a closed space between the patch 500 and the explosion-proof valve 400, which may cause the patch 500 to loosen when the pressure changes.
[0073] However, since the space between explosion-proof valve 400 and patch 500 is connected to the outside world via exhaust channel 300, if there are impurities on the outside of protruding ring 200, the impurities may enter mounting hole 110 through exhaust channel 300, causing the protective effect of patch 500 to fail. To address this problem, exhaust channel 300 is designed to bend. The bent structure prevents liquid from entering mounting hole 110, but does not affect the air pressure balance between mounting hole 110 and the outside world. This effectively prevents patch 500 from loosening while ensuring the protective effect of patch 500 on explosion-proof valve 400, reducing the possibility of patch 500 failure.
[0074] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.
[0075] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.
[0076] It should be readily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes the meaning of “above” or “over” with no intervening features or layers therebetween.
[0077] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations, and the spatially relative descriptors used herein should be interpreted accordingly.
[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A battery cover, characterized in that: The invention comprises a substrate (100) and a convex ring (200) arranged on the substrate (100), wherein the substrate (100) is provided with a mounting hole (110) for mounting an explosion-proof valve (400), the convex ring (200) is arranged around the circumference of the mounting hole (110), and the end surface of the convex ring (200) away from the substrate (100) is used for mounting a patch (500), and an exhaust channel (300) is provided on the convex ring (200); One end of the exhaust channel (300) is located on the inner wall of the convex ring (200), and the other end of the exhaust channel (300) is located on the outer wall of the convex ring (200). The mounting hole (110) is connected to the outside through the exhaust channel (300) in sequence. The exhaust channel (300) is bent to prevent external impurities from entering the mounting hole (110).
2. The battery cover according to claim 1, characterized in that: The exhaust channel (300) comprises a first groove (310) and a second groove (320) which are sequentially opened on the convex ring (200), the first groove (310) and the second groove (320) being connected to each other, the notch of the first groove (310) being located on the inner side wall of the convex ring (200), the notch of the second groove (320) being located on the outer side wall of the convex ring (200), and the first groove (310) and the second groove (320) being arranged in an alternating manner.
3. The battery cover according to claim 2, characterized in that: The exhaust channel (300) further comprises a third groove (330) provided on the end surface of the convex ring (200), wherein the third groove (330) is in communication with the first groove (310) and the second groove (320).
4. The battery cover according to claim 3, characterized in that: The bottom of the third groove (330) is located on the side of at least one of the notch of the first groove (310) and the notch of the second groove (320).
5. The battery cover according to any one of claims 2 to 4, characterized in that: The notches of the first groove (310) and the notches of the second groove (320) are staggered along the axial direction of the convex ring (200).
6. The battery cover according to claim 5, characterized in that: The notch of the second groove (320) is flush with the surface of the substrate (100), and the notch of the first groove (310) is spaced apart from the surface of the substrate (100).
7. The battery cover according to any one of claims 2 to 4, characterized in that: The first groove (310) and the second groove (320) are staggered along the radial direction of the convex ring (200).
8. The battery cover according to claim 7, characterized in that: At least two of the second grooves (320) are arranged at intervals, and the intervals between the first grooves (310) and the second grooves (320) are arranged correspondingly.
9. The battery cover according to any one of claims 1 to 4, characterized in that: A liquid injection port (120) is further provided on the substrate (100), the liquid injection port (120) and the mounting hole (110) being spaced apart, at least two exhaust channels (300) are provided, and the at least two exhaust channels (300) are respectively provided on opposite sides of the convex ring (200) along the spacing direction between the liquid injection port (120) and the mounting hole (110).
10. A battery, characterized in that: The battery comprises a battery main body and the battery cover according to any one of claims 1 to 9, wherein the battery cover is connected to the battery main body.