Cap plate and battery assembly

Abstract

The utility model discloses a cap plate and a battery assembly, a lightening hole is arranged on a first surface of a plate main body of the cap plate, a water passing hole is arranged on a second surface of the plate main body, the water passing hole is communicated with the lightening hole, the water passing hole is configured to enable water in a cap hole to pass through, and a cap is arranged on the second surface along the thickness direction of the plate main body corresponding to the lightening hole. The cap extends from the second surface to a direction away from the first surface to cover the opening of the battery. According to the cap plate, the water passing holes are formed to communicate with the lightening holes, so that water in the lightening holes can be discharged through the water passing holes, the water in the lightening holes can flow out of the water passing holes when the cap plate is cleaned, the drainage speed during cleaning of the cap plate is improved, and the drying efficiency of the cap plate is improved.

Description

Technical Field

[0001] This application relates to the field of battery production equipment technology, and in particular to a cap plate and a battery assembly. Background Technology

[0002] Batteries are typically in an open state before being sealed during the manufacturing process. To prevent the electrolyte from evaporating or external impurities from flowing into the battery through the opening during transportation and when the battery is stationary, a cap fixed to a cap plate is usually used to cover the opening of the battery.

[0003] To reduce weight, cap plates usually have weight-reducing holes on their surface. However, water can easily accumulate in these holes during cleaning, which can affect the drainage speed of the cap plate. Utility Model Content

[0004] This utility model discloses a cap plate and battery assembly, which helps to improve the drainage speed during cap plate cleaning.

[0005] To achieve the above objectives, the first aspect of this utility model discloses a cap plate, comprising:

[0006] The plate body includes a first surface and a second surface opposite each other along the thickness direction. The first surface is provided with a weight reduction hole, and the second surface is provided with a water passage hole. The water passage hole and the weight reduction hole are connected. The water passage hole is configured to allow liquid in the weight reduction hole to flow out.

[0007] A cap is disposed on the second surface along the thickness direction of the plate body, corresponding to the weight reduction hole, and the cap extends from the second surface in a direction away from the first surface to cover the opening of the battery.

[0008] As an optional implementation, both the weight-reducing hole and the water-passing hole extend along the thickness direction of the plate body. The weight-reducing hole has a first inner wall surface, and the water-passing hole has a second inner wall surface. The first inner wall surface and the second inner wall surface are connected.

[0009] In this way, as long as the first inner wall surface of the weight reduction hole and the second inner wall surface of the water passage hole are partially connected, the water accumulated in the weight reduction hole can be discharged from the water passage hole, thereby improving the drainage speed of the weight reduction hole and preventing water accumulation in the weight reduction hole from affecting the drainage speed of the entire cap plate.

[0010] As an optional implementation, the weight reduction hole has a bottom surface that is inclined relative to the first inner wall surface in the direction toward the water passage, so that the liquid in the weight reduction hole flows out from the water passage.

[0011] This allows the water in the weight-reducing holes to automatically flow towards the water passage holes along the inclined direction of the bottom surface of the weight-reducing holes when the cap plate is being cleaned, thereby improving the drainage efficiency of the cap plate.

[0012] As an optional implementation, the first inner wall surface of the weight-reducing hole is a conical surface.

[0013] This allows the water in the weight reduction hole to automatically gather along the first inner wall of the weight reduction hole towards the bottom surface of the weight reduction hole, and then be discharged from the water passage hole, thereby improving the drainage efficiency of the water in the weight reduction hole.

[0014] As an optional implementation, multiple weight-reducing holes and multiple water-passing holes are provided. The multiple weight-reducing holes are spaced apart on the first surface. Each weight-reducing hole is connected to at least one water-passing hole. Each weight-reducing hole is spaced apart above the cap along the thickness direction of the plate body.

[0015] The second surface of the plate body is also provided with reinforcing ribs, and the projection of the reinforcing ribs on the first surface is located between two spaced-apart weight-reducing holes.

[0016] On the one hand, the cap plate can cover the openings of multiple batteries at once, thereby improving the covering efficiency of the battery openings. On the other hand, the liquid in each weight reduction hole can be discharged from its corresponding connected water passage, thereby improving the overall drainage efficiency of the cap plate.

[0017] As an optional implementation, the plurality of weight-reducing holes are arranged at intervals along a first direction and a second direction, and the reinforcing ribs extend along the first direction to correspond to any two adjacent weight-reducing holes in the first direction; and / or, the reinforcing ribs extend along the second direction to correspond to any two adjacent weight-reducing holes in the second direction.

[0018] Wherein, the first direction intersects with the second direction.

[0019] Setting up reinforcing ribs helps prevent the slab from deforming or collapsing due to the presence of multiple cap holes and water passages.

[0020] As an optional implementation, a first connecting hole is also provided on the first surface, located between two adjacent weight-reducing holes. A second connecting hole is provided on the reinforcing rib, corresponding to and communicating with the first connecting hole. The first and second connecting holes are configured to allow fasteners to pass through, so that the reinforcing rib is connected to the plate body. This allows the reinforcing rib to be connected to the plate body via fasteners.

[0021] As an optional implementation, the first surface of the plate body is further provided with a groove, the groove being located between and communicating with the two weight-reducing holes, and the first connecting hole being provided on the bottom surface of the groove.

[0022] In this way, after the fastener passes through the first connecting hole and connects with the second connecting hole, the top surface of the fastener can be flush with or approximately flush with the first surface of the plate body, thereby reducing the height of the fastener protruding from the first surface and preventing the fastener from being damaged by collision when the plate body is moved.

[0023] As an optional implementation, the first surface of the plate body is further provided with a water leakage hole that extends to the second surface, and the water leakage hole is spaced apart from the weight reduction hole and the water passage hole.

[0024] This allows some liquid to flow through the drain holes during the cleaning of the cap plate, thereby further reducing the amount of liquid remaining on the plate body and improving the overall drainage efficiency of the cap plate.

[0025] Secondly, this utility model also discloses a battery assembly, including a battery and a cap plate as described in the first aspect, wherein the cap of the cap plate is configured to cover the opening of the battery.

[0026] Compared with the prior art, the beneficial effects of this application are:

[0027] This utility model provides a cap plate and battery assembly. The cap plate has weight-reducing holes on a first surface and water-passing holes on a second surface. The water-passing holes and weight-reducing holes are connected and configured to allow water to pass through the cap holes. A cap is positioned on the second surface along the thickness direction of the cap body, corresponding to the weight-reducing holes, and extends from the second surface away from the first surface to cover the battery opening. By connecting the water-passing holes to the weight-reducing holes, water in the weight-reducing holes can be drained through the water-passing holes. This facilitates water flow out of the weight-reducing holes during cap plate cleaning, thereby increasing the drainage speed and drying efficiency of the cap plate. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the cover plate covering the battery as disclosed in the embodiments of this application;

[0030] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0031] Figure 3 yes Figure 2 A cross-sectional view at point BB;

[0032] Figure 4 yes Figure 2 Another cross-sectional view at point BB;

[0033] Figure 5 This is a front view of the main body of the plate disclosed in the embodiments of this application;

[0034] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0035] Figure 7 This is a rear view of the main body of the plate disclosed in the embodiments of this application;

[0036] Figure 8 yes Figure 7 A magnified view of a section at point D;

[0037] Figure 9 This is a partial structural schematic diagram of the plate body disclosed in the embodiments of this application;

[0038] Figure 10 This is a schematic diagram of the battery assembly disclosed in the embodiments of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100-Cap plate; 1-Plate body; 11-First surface; 111-Weight reduction hole; 1111-First inner wall surface; 1112-First opening; 1113-Bottom surface; 112-Water passage hole; 1121-Second inner wall surface; 113-First connecting hole; 114-Groove; 115-Drain hole; 116-Connector; 12-Second surface; 121-Reinforcing rib; 1211-Second connecting hole; 122-First positioning component; 2-Cap; 3-Fastener; 200-Battery assembly; 201-Battery; 202-Tray; 2021-Placement slot; 2022-Second positioning component; X-First direction; Y-Second direction. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In this application, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0043] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0044] Furthermore, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0045] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0046] Battery production mainly includes the following steps: negative electrode slurry homogenization, positive electrode slurry homogenization, coating, rolling, slitting, electrode baking, winding, casing, grooving, cell baking, electrolyte injection, and cap welding.

[0047] Before the cap is welded on, the battery is in an open state. To prevent the electrolyte from evaporating or external impurities from entering the battery through the opening during transportation and when stationary, a cap fixed to a cap plate is used to cover the opening. After a period of use, the cap plate will accumulate dust or electrolyte, and continued use will contaminate the battery. Therefore, the cap plate needs to be cleaned regularly.

[0048] In related technologies, when cleaning the cover plate, water can easily remain in the gaps of the cover plate, causing water accumulation. On the one hand, this affects the drying efficiency of the cover plate; on the other hand, if the residual water is not dried, it may flow into the battery when the cover plate is placed on the battery, which may cause contamination to the battery.

[0049] In view of this, this application discloses a cap plate and a battery assembly. The cap plate includes a plate body and a cap. The plate body includes a first surface and a second surface opposite to each other along the thickness direction. A weight reduction hole is provided on the first surface, and a water passage hole is provided on the second surface. The water passage hole communicates with the weight reduction hole. The cap is disposed on the second surface and extends from the second surface away from the first surface to cover the opening of the battery. The water passage hole is configured to allow liquid in the weight reduction hole to flow out. This helps to allow water accumulated in the weight reduction hole to flow out through the water passage hole when the cap plate is cleaned, thereby helping to improve the drainage speed of the cap plate and thus improving the drying efficiency of the cap plate.

[0050] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0051] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the cover plate covering the battery as disclosed in the embodiments of this application. Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle. Figure 3 yes Figure 2 A cross-sectional view at point BB. The cap plate 100 includes a plate body 1 and a cap 2. The plate body 1 includes a first surface 11 and a second surface 12 opposite each other along its thickness direction. The first surface 11 has a weight-reducing hole 111, and the second surface 12 has a water-passing hole 112 connected to the weight-reducing hole 111. The water-passing hole 112 is configured to allow liquid in the weight-reducing hole 111 to flow out. The cap 2 is disposed on the second surface 12 along the thickness direction of the plate body 1, corresponding to the weight-reducing hole 111, and extends from the second surface 12 away from the first surface 11 to cover the opening of the battery 201.

[0052] The cap plate 100 disclosed in this application has a weight-reducing hole 111 on the first surface 11 of the plate body 1, and a water passage hole 112 on the second surface 12 of the plate body 1. The water passage hole 112 is connected to the weight-reducing hole 111. This helps to allow the water accumulated in the weight-reducing hole 111 to flow out through the water passage hole 112 when the cap plate 100 is cleaned, thereby helping to improve the drainage speed of the cap plate 100 and thus improving the drying efficiency of the cap plate 100.

[0053] It is understood that the material of the above-mentioned plate body 1 can be polypropylene, polyphenylene ether, aluminum alloy, etc., and this embodiment does not make specific limitations on this.

[0054] It is understood that the above-mentioned plate body 1 can be a rectangular plate or a circular plate, etc. This application will take the plate body 1 as a rectangular plate as an example for subsequent implementation.

[0055] It is understood that the aforementioned weight-reducing hole 111 can be a blind hole or a through hole connecting the first surface 11 and the second surface 12. If it is a through hole, the weight-reducing hole 111 is connected to the upper surface of the cap 2. This embodiment does not make specific limitations on this.

[0056] It is understood that the cap plate 100 disclosed in this application can be used to cover the cylindrical battery 201. Since the cap plate 100 disclosed in this application is used to cover the cylindrical battery 201, the projection shape of the cap 2 on the first surface 11 of the plate body 1 is circular.

[0057] In some embodiments, please refer to Figure 2 and Figure 3 The weight-reducing hole 111 and the water-passing hole 112 both extend along the thickness direction of the main body of the plate. The weight-reducing hole 111 has a first inner wall surface 1111, and the water-passing hole has a second inner wall surface 1121. The first inner wall surface 1111 and the second inner wall surface 1121 are connected. That is, the water-passing hole 112 and the weight-reducing hole 111 are directly connected. Compared with the indirect connection between the water-passing hole 112 and the weight-reducing hole 111 through grooves or channels, the direct connection between the water-passing hole 112 and the weight-reducing hole 111 allows the water accumulated in the weight-reducing hole 111 to flow out of the water-passing hole 112 faster, thereby improving the overall drainage speed of the cap plate 100 and thus improving the drying efficiency of the cap plate 100. In addition, the direct connection between the water passage hole 112 and the weight reduction hole 111 helps to make the structure of the water passage hole 112 and the weight reduction hole 111 more compact, thereby reducing the space occupied by the water passage hole 112 and the weight reduction hole 111 on the cap plate 100.

[0058] It is understood that the above-mentioned water passage 112 can be set on one side of the weight reduction hole 111 in any direction and connected to it. The setting position of the water passage 112 has no effect on the drainage speed of the cap plate 100. This embodiment does not make specific limitations on this.

[0059] It is understood that the size of the opening of the water passage 112 on the second surface 12 can be set according to actual needs, and this embodiment does not make specific limitations on this.

[0060] It is understandable that there can be multiple examples of how the water passage hole 112 and the weight reduction hole can be connected. In one example, such as... Figure 3 As shown, the water passage hole 112 can be connected from the second surface 12 to the first surface 11, which increases the area at the connection between the weight reduction hole 111 and the water passage hole 112, thereby helping to increase the outflow speed of water accumulated in the water passage hole 112, and thus improving the overall drainage speed of the cap plate.

[0061] In another example, such as Figure 4 As shown, Figure 4 yes Figure 2Another cross-sectional view at point BB shows that the water passage hole 112 may not be connected to the first surface 11. That is, the water passage hole 112 is connected to part of the weight reduction hole 111, which helps to ensure the structural strength of the plate body 1.

[0062] Optionally, the weight-reducing hole has a bottom surface 1113. This bottom surface 1113 is inclined relative to the first inner wall surface 1111 of the weight-reducing hole 111 towards the water passage 112, so that liquid in the weight-reducing hole 111 flows out through the water passage 112. By setting the bottom surface 1113 of the weight-reducing hole 111 to be inclined relative to the first inner wall surface 1111 towards the water passage 112, it helps that during cleaning of the cap plate 100, the accumulated water in the weight-reducing hole 111, i.e., the accumulated water on the bottom surface 1113 of the weight-reducing hole 111, can automatically flow along the inclined direction of the bottom surface 1113 towards the direction of the water passage 112, so that the accumulated water flows out through the water passage 112. This arrangement helps improve the drainage efficiency of the accumulated water in the weight-reducing hole 111, thereby improving the overall drainage efficiency of the cap plate 100, and further improving the drying efficiency of the cap plate 100.

[0063] In some embodiments, please refer to... Figure 2 and Figure 3 The weight-reducing hole 111 has a first opening 1112 on the first surface 11, and the first inner wall surface of the weight-reducing hole 111 is a conical surface. That is, the weight-reducing hole 111 gradually slopes from the first opening 1112 towards the bottom surface 1113, so that the opening width of the weight-reducing hole 111 gradually decreases from the first opening 1112 towards the bottom surface 1113, that is, the diameter of the weight-reducing hole 111 gradually decreases from the first opening 1112 towards the bottom surface 1113. By setting the first inner wall surface 1111 of the weight-reducing hole 111 to be inclined, and the diameter of the weight-reducing hole 111 gradually decreasing from the first opening 1112 towards the bottom surface 1113, water accumulated in the weight-reducing hole 111 can automatically collect towards the bottom surface 1113 along the first inner wall surface 1111 of the weight-reducing hole 111. Afterwards, the accumulated water can automatically flow along the inclined direction of the bottom surface 1113 of the weight reduction hole 111 to the water passage hole 112 and be discharged from the water passage hole 112, which helps to improve the discharge efficiency of the accumulated water in the weight reduction hole 111, thereby helping to improve the overall drainage efficiency of the cap plate 100, and thus helping to improve the drying efficiency of the cap plate 100.

[0064] Optionally, please refer to Figure 5 and Figure 6 , Figure 5 This is a front view of the main body of the plate disclosed in the embodiments of this application. Figure 6 yes Figure 5A partial enlarged view at point C. Multiple weight-reducing holes 111 and water-passing holes 112 are provided on the first surface 11 of the main body 1. The weight-reducing holes 111 are spaced apart on the first surface 11, and each weight-reducing hole 111 is spaced apart above a cap 2 along the thickness direction of the main body 1. Each weight-reducing hole 111 is connected to at least one water-passing hole 112. That is, one weight-reducing hole 111 can be connected to one water-passing hole 112, or multiple water-passing holes 112 can be connected, depending on actual needs. This embodiment does not impose specific limitations on this.

[0065] By providing multiple weight-reducing holes 111 on the main body 1, and each weight-reducing hole 111 being spaced apart above a cap 2 along the thickness direction of the main body 1, it is helpful that the cap plate 100 can cover the openings of multiple batteries 201 at one time, thereby helping to improve the covering efficiency of the openings of the batteries 201.

[0066] In addition, each weight reduction hole 111 is connected to at least one water passage hole 112, which ensures that each weight reduction hole 111 is connected to at least one water passage hole 112, so that the liquid in each weight reduction hole 111 can be discharged from its corresponding connected water passage hole 112, thereby improving the overall drainage efficiency of the cap plate 100, which in turn helps to improve the drying efficiency of the cap plate 100.

[0067] In some embodiments, the aforementioned multiple weight-reducing holes 111 are arranged at intervals along the first direction X and the second direction Y. This arrangement helps to make reasonable use of the space on the main body 1 to set multiple weight-reducing holes 111 and caps 2, and helps to increase the number of battery 201 openings that the cap plate 100 can cover at one time.

[0068] It is understandable that the first direction X and the second direction Y are the extension directions of the two intersecting sides of the main body 1 (i.e., the first direction X can be as follows). Figure 7 The vertical direction in the middle of the paper, and the second direction Y can be as follows: Figure 7 (The left and right directions in the direction of the paper) are not specifically limited in this embodiment.

[0069] Please see Figure 7 and Figure 8 , Figure 7 This is a rear view of the main body of the plate disclosed in the embodiments of this application. Figure 8 yes Figure 7A partial enlarged view at point D. Considering that when multiple weight-reducing holes 111 and multiple water-passing holes 112 are provided on the main body 1, the presence of multiple holes may affect the overall structural strength of the main body 1, leading to deformation or collapse. Therefore, in some embodiments, a reinforcing rib 121 is also provided on the second surface 12 of the main body 1. The projection of this reinforcing rib 121 on the first surface 11 is located between two spaced-apart weight-reducing holes 111. By providing a reinforcing rib 121 on the second surface 12 of the main body 1, it helps to provide a certain supporting force to the main body 1, thereby improving the overall structural strength of the main body 1 and preventing deformation or collapse during use.

[0070] In addition, the projection of the reinforcing rib 121 on the first surface 11 is located between the two spaced-apart weight-reducing holes 111, so that the reinforcing rib 121 can avoid the two spaced-apart caps 2 on the second surface 12, thus avoiding affecting the normal covering of the opening of the battery 201 by the caps 2.

[0071] It is understood that the material of the reinforcing rib 121 can be the same as that of the plate body 1, or the material of the reinforcing rib can be glass fiber, carbon fiber, etc. This embodiment does not make specific limitations on this.

[0072] Optionally, as mentioned above, the multiple weight-reducing holes 111 can be arranged along both the first direction X and the second direction Y. That is, the weight-reducing holes 111 are arranged along both the length and width directions of the plate body 1. Based on this, the reinforcing ribs 121 can also extend along the first direction X or the second direction Y on the plate body 1. In this way, the reinforcing ribs 121 can be used to strengthen the structure of the entire plate body 1, thereby preventing the plate body 1 from deforming or collapsing during use.

[0073] Optionally, one or more reinforcing ribs 121 can be provided. Providing multiple reinforcing ribs 121 helps to further improve the structural strength of the plate body 1. There are various embodiments for the arrangement of the above-mentioned multiple reinforcing ribs 121 along the first direction X and the second direction Y, which will be illustrated below.

[0074] In one example, multiple reinforcing ribs 121 extend along the first direction X to correspond to any two adjacent weight-reducing holes 111 in the second direction Y, and the multiple reinforcing ribs 121 are spaced apart along the second direction Y, which helps to increase the structural strength of the plate body 1 and prevent the plate body 1 from deforming or collapsing during use.

[0075] In another example, multiple reinforcing ribs 121 extend along the second direction Y and are spaced apart along the first direction X, corresponding to any two adjacent weight-reducing holes 111 in the first direction X. This helps to increase the structural strength of the plate body 1 and prevent the plate body 1 from deforming or collapsing during use.

[0076] In another example, some of the reinforcing ribs 121 extend along the first direction X and are spaced apart along the second direction Y, while others extend along the second direction Y and are spaced apart along the first direction X. This arrangement helps to further improve the structural strength of the plate body 1 compared to the arrangement where all the reinforcing ribs 121 extend along the same direction.

[0077] Please refer to the following: Figures 5 to 8 In some embodiments, the reinforcing rib 121 can be integrally formed with the plate body 1, or it can be separately formed from the plate body 1. When the reinforcing rib 121 is integrally formed with the plate body 1, it can be formed together during the production of the plate body 1, for example. When the reinforcing rib 121 is separately formed from the plate body 1, it can be fixed to the plate body by means of welding, adhesive, magnetic attraction, screws / bolts, etc. The following description will take the screw / bolt fixing method of the reinforcing rib 121 as an example.

[0078] In some embodiments, a first connecting hole 113 is also provided on the first surface 11, which is located between two adjacent weight-reducing holes 111. Correspondingly, a second connecting hole 1211 is provided on the reinforcing rib 121, which corresponds to and communicates with the first connecting hole 113. The first connecting hole 113 and the second connecting hole 1211 are configured to allow the fastener 3 to pass through, so that the reinforcing rib 121 is connected to the plate body 1.

[0079] It is understood that the fastener 3 mentioned above can be a screw, bolt or other fastener, and the corresponding first connecting hole 113 and second connecting hole 1211 are threaded holes, and the two are threadedly connected.

[0080] By opening a first connecting hole 113 and a second connecting hole 1211 on the plate body 1 and the reinforcing rib 121 respectively, and the first connecting hole 113 and the second connecting hole 1211 being corresponding and connected so that the fastener 3 can pass through, it is helpful to fix the reinforcing rib 121 on the plate body 1 through the fastener 3 and the connecting hole.

[0081] Taking the reinforcing rib 121 extending along the first direction X as an example, multiple first connecting holes 113 can be spaced out on the first surface 11 of the plate body 1 along the first direction X. Correspondingly, multiple second connecting holes 1211 are also provided on the reinforcing rib 121. The first connecting holes 113 and the second connecting holes 1211 correspond one-to-one and are connected. Each first connecting hole 113 and each second connecting hole 1211 allows a fastener 3 to pass through. By providing multiple connectors 116 spaced out along the extending direction of the reinforcing rib 121, the connection strength between the reinforcing rib 121 and the plate body 1 is improved.

[0082] Please refer to the following: Figure 6 , Figure 8 and Figure 9 ,in, Figure 9 This is a partial structural schematic diagram of the plate body disclosed in the embodiments of this application. In some embodiments, a groove 114 is also provided on the first surface 11 of the plate body 1. The groove 114 is located between and connected to the two weight-reducing holes 111, and a first connecting hole 113 is provided on the bottom surface of the groove 114.

[0083] By setting the first connecting hole 113 on the bottom surface of the groove 114, after the fastener 3 passes through the first connecting hole 113 and connects with the first connecting hole 113, the top surface of the fastener 3 can be flush with or approximately flush with the first surface 11 of the plate body 1. This reduces the height of the fastener 3 protruding from the first surface 11 and prevents the fastener 3 from being damaged by collision when the plate body 1 moves.

[0084] In addition, by setting the groove 114 between the two weight-reducing holes 111 to connect the two adjacent weight-reducing holes 111, when cleaning the cover plate 100, the water accumulated in the groove 114 can flow into the weight-reducing hole 111 and then flow out through the water passage hole 112, effectively avoiding the situation where water accumulates in the groove 114 and contaminates the battery 201.

[0085] It is understood that the groove 114 can correspond to the number of fasteners 3, with each fastener 3 having a corresponding groove 114.

[0086] In some embodiments, the first surface 11 of the plate body 1 is further provided with a drainage hole 115 extending to the second surface 12. The drainage hole 115 is spaced apart from the weight reduction hole 111 and the water passage hole 112. By providing a through drainage hole 115 on the plate body 1, some liquid can flow through the drainage hole 115 when cleaning the cap plate 100, thereby further reducing the liquid remaining on the plate body 1, improving the overall drainage efficiency of the cap plate 100, and thus helping to improve the drying efficiency of the cap plate 100.

[0087] It is understood that the aforementioned drainage hole 115 can be a round hole, a near-round hole, or a polygonal hole, and this embodiment does not specifically limit it.

[0088] Please see Figure 10 , Figure 10 This is a schematic diagram of the structure of the battery assembly disclosed in the embodiments of this application. In a second aspect, this application also discloses a battery assembly 200, including a battery 201 and a cover plate 100 as described in the first aspect above, wherein the cap 2 of the cover plate 100 is configured to cover the opening of the battery 201.

[0089] It is understandable that when the cap plate 100 is in use, the battery assembly 200 is equipped with a tray 202 that matches the cap plate 100. The tray 202 has multiple placement slots 2021 spaced apart for placing batteries 201. The cap plate 100 is placed on top of multiple batteries 201, and the caps 2 on the cap plate 100 can cover the openings of multiple batteries 201 at once.

[0090] Optionally, the number of placement slots 2021 on the tray 202 matches the number of cap plates 100. In this case, the main body 1 of the cap plate 100 is provided with a connector 116 near its side, which is used to connect the tray 202 so that the cap 2 on the cap plate 100 tightly covers the opening of the battery 201.

[0091] Optionally, the cap plate 100 is further provided with a first positioning element 122, and the corresponding tray 202 is provided with a second positioning element 2022. The first positioning element 122 and the second positioning element 2022 are positioned and connected so that the cap plate 100 can be accurately and quickly connected to the tray 202.

[0092] By using the cap plate 100 and the tray 202 together, and by providing a connector 116 to tightly connect the tray 202 and the cap plate 100, and by providing a positioning component, the efficiency of capping the battery 201 is improved, and the convenience of handling the battery 201 is improved. Multiple batteries 201 can be handled at one time by simply moving the tray 202.

[0093] Optionally, the aforementioned connector 116 may be a snap-fit ​​or threaded connector, and this embodiment does not specifically limit it.

[0094] Optionally, multiple connectors 116 can be provided, with connectors 116 provided on all four sides of the plate body 1, which helps to improve the connection stability between the plate body 1 and the tray 202, so as to ensure that the cap plate 100 seals the battery opening well.

[0095] Optionally, the first positioning element 122 and the second positioning element 2022 mentioned above can be a combination of a positioning post and a positioning groove, or a combination of a positioning block and a positioning groove. This embodiment does not specifically limit this.

[0096] Optionally, multiple first positioning elements 122 can be provided. For example, first positioning elements 122 can be provided at each of the four corners adjacent to the main body 1 of the plate. Then, multiple second positioning elements 2022 are also provided corresponding to the first positioning elements 122. The two are connected one-to-one, which helps to improve the connection accuracy between the cap plate 100 and the tray 202.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cap plate, characterized in that, The cap plate includes: The plate body includes a first surface and a second surface opposite each other along the thickness direction. The first surface is provided with a weight reduction hole, and the second surface is provided with a water passage hole. The water passage hole and the weight reduction hole are connected. The water passage hole is configured to allow liquid in the weight reduction hole to flow out. A cap is disposed on the second surface along the thickness direction of the plate body, corresponding to the weight reduction hole, and the cap extends from the second surface in a direction away from the first surface.

2. The cap plate according to claim 1, characterized in that, Both the weight-reducing hole and the water-passing hole extend along the thickness direction of the plate body. The weight-reducing hole has a first inner wall surface, and the water-passing hole has a second inner wall surface. The first inner wall surface and the second inner wall surface are connected.

3. The cap plate according to claim 2, characterized in that, The weight reduction hole has a bottom surface that is inclined relative to the first inner wall surface in the direction toward the water passage hole, so that the liquid in the weight reduction hole flows out from the water passage hole.

4. The cap plate according to claim 3, characterized in that, The first inner wall surface of the weight reduction hole is a conical surface.

5. The cap plate according to claim 1, characterized in that, Multiple weight-reducing holes, multiple water passage holes, and multiple caps are provided. Multiple weight-reducing holes are spaced apart on the first surface. Each weight-reducing hole is connected to at least one water passage hole. Each weight-reducing hole is spaced apart above one cap along the thickness direction of the plate body. The second surface of the plate body is also provided with reinforcing ribs, and the projection of the reinforcing ribs on the first surface is located between two spaced-apart weight-reducing holes.

6. The cap plate according to claim 5, characterized in that, The plurality of weight-reducing holes are arranged at intervals along a first direction and a second direction, and the reinforcing ribs extend along the first direction to correspond to any two adjacent weight-reducing holes in the second direction; and / or, the reinforcing ribs extend along the second direction to correspond to any two adjacent weight-reducing holes in the first direction. Wherein, the first direction intersects with the second direction.

7. The cap plate according to claim 5, characterized in that, A first connecting hole is also provided on the first surface. The first connecting hole is located between two adjacent weight-reducing holes. A second connecting hole is provided on the reinforcing rib. The second connecting hole corresponds to and communicates with the first connecting hole. The first connecting hole and the second connecting hole are configured to allow fasteners to pass through so that the reinforcing rib is connected to the plate body.

8. The cap plate according to claim 7, characterized in that, The first surface of the plate body is further provided with a groove, the groove being located between and connected to the two weight-reducing holes, and the first connecting hole being provided on the bottom surface of the groove.

9. The cap plate according to any one of claims 1-8, characterized in that, The first surface of the plate body is also provided with a water leakage hole that extends to the second surface. The water leakage hole is spaced apart from the weight reduction hole and the water passage hole.

10. A battery assembly, characterized in that, The battery assembly includes a battery and a cap plate as described in any one of claims 1-9, wherein the cap of the cap plate is configured to cover an opening in the battery.

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