Cover plate assembly, battery and electric device

Abstract

The invention relates to the technical field of batteries, in particular to a cover plate assembly, a battery and an electric device. The cover plate assembly comprises a cover plate body and a first insulating part, the cover plate body comprises supporting bosses, protruding parts and flat plate parts, the flat plate parts are arranged at the two ends of the protruding parts in the first direction, the supporting bosses are arranged on the inner sides of the corresponding flat plate parts, and the first insulating part comprises a first split body. The first split body comprises a main body part and a reinforcing insert embedded in the main body part, the main body part is arranged on the inner side of the cover plate body, an inserting groove is formed in the main body part, and the supporting boss is matched with the inserting groove in an inserting mode. According to the cover plate assembly, the bonding strength of the cover plate body and the first split body can be improved; and the overall strength of the first split body can be improved, so that the supporting strength of the first split body to the lug boss is improved, the structural strength of the cover plate body is improved, the deformation risk of the cover plate body during use is reduced, the cover plate body is prevented from being damaged, the safety performance of the battery is improved, and the service life of the battery is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a cover plate assembly, a battery and an electrical device. Background Art

[0002] In lithium-ion batteries, the cover assembly is a key component. It is connected to the shell through the cover assembly to encapsulate the electrode group in the shell. At the same time, the poles on the cover assembly can lead out the pole ears of the electrode group to connect to the external circuit.

[0003] In the related art, the cover plate assembly generally includes a rivet block, a first insulating member, a pole, a cover plate body, a second insulating member and a sealing ring. The sealing ring is sleeved on the outside of the pole, and the column portion of the pole passes through the first insulating member, the cover plate body, and the second insulating member from one side of the cover plate body in sequence and is connected to the rivet block. The plate portion of the pole is pressed tightly against the second insulating member. Since the pole, the rivet block and the second insulating member protrude from the cover plate body, during transportation, assembly, etc., the pole, the rivet block or the second insulating member may often be bumped or dented, resulting in poor performance and appearance of the battery. In order to solve the above problems, in the related art, a raised portion with a height higher than the pole, the rivet block and the second insulating member is stamped out on the cover plate body, so as to protect the pole, the rivet block and the second insulating member through the raised portion. However, the above-mentioned setting method usually has the following problems:

[0004] During transportation, assembly or long-term use, the protrusions formed by stamping the cover body may be knocked or bumped, causing the cover body to deform or be damaged, which in turn may lead to safety problems such as battery short circuit and electrolyte leakage.

[0005] This section provides background information related to the application that is not necessarily prior art. Summary of the Invention

[0006] The object of the present invention is to provide a cover plate assembly, a battery and an electrical device, which can reduce the risk of deformation or damage of the cover plate body and improve the safety performance and service life of the battery.

[0007] To achieve the above objectives, the following technical solutions are provided:

[0008] A cover plate assembly, comprising:

[0009] The cover body includes a supporting boss, a raised portion, and a flat portion, wherein the flat portion is provided at both ends of the raised portion along a first direction, and the supporting boss is provided on the inner side of the corresponding flat portion;

[0010] The first insulating member includes a first split body, which includes a main body and a reinforcing insert embedded in the main body. The main body is arranged on the inner side of the cover body, and the main body is provided with a plug-in groove. The supporting boss is plugged into and matched with the plug-in groove.

[0011] As an optional solution, the reinforcing insert includes a pull rod portion and a hook portion, the pull rod portion extends along the first direction, the hook portion is arranged at both ends of the pull rod portion along the first direction, the pull rod portion and the hook portion together form a receiving groove, the support boss extends along the second direction, at least part of the support boss is located in the receiving groove and abuts against the pull rod portion and / or the hook portion, and the first direction is perpendicular to the second direction.

[0012] As an optional solution, the size of the hook portion along the first direction is L1, and the size of the hook portion along the second direction is H, 1.43 mm. 2 ≤L1*H≤4mm 2 .

[0013] As an optional solution, at least one through hole is formed on the hook portion.

[0014] As an optional solution, the raised portion includes:

[0015] roof;

[0016] The side plates are arranged at both ends of the top plate along the first direction, and the side plates are connected to the corresponding flat plate parts.

[0017] As an optional solution, the cover plate body further includes a reinforcement structure, and the reinforcement structure is connected to the side plate and / or the flat plate portion.

[0018] As an optional solution, the number of the reinforcing structures at each side panel is two, the dimension of the center lines of the two reinforcing structures in the second direction is W1, the dimension of the side panel in the second direction is W2, and 0.42≤W1 / W2≤0.65.

[0019] As an optional solution, the dimension of the side of the support boss away from the flat plate portion in the first direction is A, and the distance between the side of the support boss away from the flat plate portion and the flat plate portion is B, 2.08 mm. 2 ≤A*B≤6mm 2 .

[0020] A battery comprises a shell, an electrode group, and the above-mentioned cover plate assembly.

[0021] An electric device comprises an electric device body and the above-mentioned battery.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The cover assembly provided by the present invention includes a cover body, and the cover body includes a supporting boss. By arranging the supporting boss and the plug-in groove of the first split to be plugged in and matched, the bonding strength between the cover body and the first split can be improved; by embedding a reinforcing insert in the first split, the overall strength of the first split can be improved, thereby improving the supporting strength of the first split on the raised portion, thereby improving the structural strength of the cover body, reducing the risk of deformation of the cover body during use, preventing damage to the cover body, and improving the safety performance and service life of the battery.

[0024] The battery provided by the present invention, by applying the above-mentioned cover plate assembly, has high strength, can reduce the risk of deformation or damage of the cover plate body, and improve the safety performance and service life of the battery.

[0025] The electrical device provided by the present invention, by using the above-mentioned battery, has a higher strength of the cover plate assembly, which can reduce the risk of deformation or damage to the cover plate body, and improve the safety performance and service life of the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0027] Figure 1 A schematic structural diagram of a battery provided in Example 1 of the present invention;

[0028] Figure 2 A partial cross-sectional view of a battery provided in Example 1 of the present invention;

[0029] Figure 3 A first view of the cover plate assembly provided in embodiment 1 of the present invention;

[0030] Figure 4 A second view of the cover plate assembly provided in the first embodiment of the present invention;

[0031] Figure 5 A third view of the cover plate assembly provided in embodiment 1 of the present invention;

[0032] Figure 6 for Figure 5 Cross-sectional view at AA in the middle;

[0033] Figure 7 for Figure 5 Cross-sectional view at the middle BB;

[0034] Figure 8 A schematic diagram of a portion of the structure of a cover plate assembly provided in Embodiment 1 of the present invention;

[0035] Figure 9 A first view of the cover body provided in the first embodiment of the present invention;

[0036] Figure 10 A second view of the cover body provided in the first embodiment of the present invention;

[0037] Figure 11 A third view of the cover body provided in the first embodiment of the present invention;

[0038] Figure 12 A schematic structural diagram of the first split body provided in Example 1 of the present invention;

[0039] Figure 13 A schematic diagram of the exploded structure of the first split body provided in Example 1 of the present invention;

[0040] Figure 14 A first view of the reinforcement insert provided in embodiment 1 of the present invention;

[0041] Figure 15 A second view of the reinforcement insert provided in embodiment 1 of the present invention;

[0042] Figure 16 This is a schematic structural diagram of a vehicle provided in Example 2 of the present invention.

[0043] Reference numerals:

[0044] 10000, vehicle;

[0045] 1000, battery;

[0046] 100. Cover plate assembly;

[0047] 10. Cover plate body; 11. Flat plate; 12. Raised portion; 121. Top plate; 1211. Explosion-proof hole; 122. Side plate; 13. Reinforcement structure; 14. Support boss;

[0048] 20. Pole; 21. Column; 22. Plate;

[0049] 30. Riveting block;

[0050] 40. Second insulating member;

[0051] 50. First insulating member; 51. First sub-body; 511. Main body; 5111. Ventilation hole; 5112. Cavity; 5113. Insertion slot; 512. Reinforcement insert; 51201. Accommodation slot; 5121. Pull rod; 5122. Hook; 51221. Through hole; 52. Second sub-body;

[0052] 60. Sealing member; 61. First sealing portion; 62. Second sealing portion;

[0053] 200, shell; 300, pole group;

[0054] 2000, controller; 3000, motor. DETAILED DESCRIPTION

[0055] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0056] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0057] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0058] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0059] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0060] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0061] Example 1

[0062] like Figure 1-Figure 2 As shown, this embodiment provides a battery 1000, which includes a housing 200 and an electrode group 300. The electrode group 300 is disposed within the housing 200, and the housing 200 is used to support and protect the electrode group 300. The housing 200 can be made of plastic or metal. When the housing 200 is made of metal, it has better heat dissipation performance and higher strength, and can also provide support.

[0063] The electrode group 300 in the present application can be formed by winding or by laminating. Generally, the electrode group 300 includes at least a positive electrode sheet, a separator, and a negative electrode sheet.

[0064] Optionally, the shell 200 is provided with at least one opening, and the battery 1000 further includes a cover assembly 100, which is provided on the opening of the shell 200, the electrode group 300 is connected to the cover assembly 100, and the cover assembly 100 is connected to the main body of the external electrical device, thereby realizing the power supply function of the battery 1000 to the main body of the electrical device.

[0065] like Figure 2-Figure 6 As shown, the cover plate assembly 100 includes a cover plate body 10, a terminal 20, and a rivet block 30. The cover plate body 10 covers the opening of the housing 200. The terminal 20 includes a column portion 21 and a plate portion 22. The column portion 21 is inserted into the cover plate body 10. The terminal 20 passes through one side of the cover plate body 10 and is riveted to the rivet block 30. The cover plate body 10 is sandwiched between the plate portion 22 and the rivet block 30, thereby assembling the terminal 20 and the rivet block 30 with the cover plate body 10. The plate portion 22 of the terminal 20 is connected to the electrode group 300. The terminal 20 can short-circuit the electrode group 300 to the outside, facilitating charging and discharging of the battery 1000.

[0066] Optionally, the cover assembly 100 further includes a seal 60, which is sandwiched between the pole 20 and the cover body 10. The seal 60 can insulate and isolate the pole 20 and the cover body 10 to prevent a short circuit between the pole 20 and the cover body 10. At the same time, the seal 60 can seal the gap between the column portion 21 and the cover body 10 to prevent leakage of electrolyte or gas.

[0067] Optionally, the seal 60 includes a first sealing portion 61 and a second sealing portion 62, the second sealing portion 62 is arranged around the outer periphery of the first sealing portion 61, and is located at one axial end of the first sealing portion 61, so that the cross-section of the seal 60 is L-shaped, the first sealing portion 61 is sleeved on the outer peripheral surface of the pole 20, and can be compressed by the cover body 10 and the column portion 21 of the pole 20, and the second sealing portion 62 is clamped between the cover body 10 and the plate body 22 to improve the sealing effect of the seal 60.

[0068] Optionally, the cover assembly 100 also includes a second insulating member 40 and / or a first insulating member 50. The second insulating member 40 is arranged between the rivet block 30 and the cover body 10 to ensure insulation between the rivet block 30 and the cover body 10 to avoid short circuit between the rivet block 30 and the cover body 10; the first insulating member 50 is arranged on the inner side of the cover body 10. The first insulating member 50 can abut against the pole group 300, fix the pole group 300, avoid displacement of the pole group 300, and avoid short circuit between the pole group 300 and the cover body 10.

[0069] Optionally, the cover plate body 10 includes a raised portion 12 and a flat portion 11, the flat portion 11 being provided at both ends of the raised portion 12 along the first direction, the pole 20 (specifically, the column portion 21) being passed through the flat portion 11, the top surface of the rivet block 30 and / or the pole 20 being lower than the top surface of the raised portion 12, and the top surface of the second insulating member 40 being lower than the top surface of the raised portion 12. In other words, the cover plate assembly 100 is in a "convex" shape as a whole, so that the raised portion 12 can effectively protect the pole 20, the rivet block 30 and the first insulating member 50, reducing the risk of the rivet block 30 and the first insulating member 50 being bumped or damaged during the manufacturing process; in addition, during the assembly of the battery 1000, the "convex"-shaped cover plate assembly 100 provides space for the connecting piece, thereby saving assembly space for the module, increasing the module assembly rate, and thereby improving the performance of the battery 1000.

[0070] In this embodiment, the thickness of the flat plate portion 11 is T1 , and the value of T1 is 2 mm to ensure that the flat plate portion 11 has sufficient strength.

[0071] In this embodiment, the first insulating member 50 includes a first sub-body 51 and a second sub-body 52. ​​The first sub-body 51 is disposed inside the raised portion 12 to prevent short circuiting between the electrode group 300 and the raised portion 12. The second sub-body 52 is disposed between the plate portion 22 of the electrode 20 and the cover body 10 to prevent short circuiting between the electrode 20 and the cover body 10. Separating the first insulating member 50 into the first sub-body 51 and the second sub-body 52 facilitates assembly, reduces manufacturing process errors, and reduces the difficulty of molding the first insulating member 50.

[0072] In this embodiment, the pole 20, the second insulating member 40, the rivet block 30, the second split 52 and the seal 60 together constitute an output component. There are two output components, and the two output components are respectively arranged on the flat plate portion 11 on both sides of the raised portion 12 to achieve current diversion and load balancing, thereby optimizing the conductive efficiency.

[0073] Optionally, the raised portion 12 is formed by stamping the middle portion of the flat portion 11. Stamping has the advantages of high production efficiency, high material utilization, and low production cost.

[0074] Specifically, if Figure 7-11 As shown, the raised portion 12 includes a top plate 121 and side plates 122. The side plates 122 are disposed at both ends of the top plate 121 along a first direction and are connected to the corresponding flat plate portion 11. The angle between the side plates 122 and the top plate 121 is obtuse, which prevents the raised portion 12 from getting stuck in the stamping die and preventing deformation or damage to the raised portion 12. The first direction is the length of the flat plate portion 11.

[0075] Optionally, an explosion-proof hole 1211 is provided on the top plate 121, and the cover assembly 100 also includes an explosion-proof valve (not shown in the figure), which is welded to the inner wall of the explosion-proof hole 1211. The first split body 51 is provided with an air vent 5111 connected to the explosion-proof hole 1211. When an abnormality occurs inside the battery 1000, the air pressure in the shell 200 reaches the explosion-proof threshold of the explosion-proof valve, and the explosion-proof valve opens. The gas is discharged from the explosion-proof hole 1211 through the air vent 5111, releasing the internal pressure of the shell 200, preventing the battery 1000 from thermal runaway and explosion and fire, and improving the safety of the battery 1000.

[0076] Optionally, the cover body 10 further includes a reinforcing structure 13 , which is connected to the side panels 122 and / or the flat plate portion 11 to enhance the overall strength of the cover body 10 and effectively improve the flatness and precision of the stamping of the cover body 10 .

[0077] Alternatively, as Figure 11 As shown, the number of reinforcing structures 13 at each side panel 122 is two, the dimension of the center lines of the two reinforcing structures 13 in the second direction is W1, the dimension of the side panel 122 in the second direction is W2, 0.42≤W1 / W2≤0.65, to ensure that the reinforcing structure 13 can achieve a better strength reinforcement effect on the cover plate body 10. When the value of W1 / W2 is too small, the distance ratio of the reinforcing structure 13 is low. On the one hand, the reinforcement effect on the cover plate body 10 is not good. On the other hand, the distance between the two reinforcing structures 13 is small, and stamping is difficult. When the value of W1 / W2 is too large, the distance ratio of the reinforcing structure 13 is too large, which will result in a small distance between the edge of the flat plate portion 11 and / or the side panel 122 and the reinforcing structure 13, and the flatness of the edge of the flat plate portion 11 and the side panel 122 is difficult to ensure, and stamping is difficult.

[0078] For example, the value of W1 / W2 may be 0.42, 0.45, 0.5, 0.55, 0.6 or 0.65. In other embodiments, the value of W1 / W2 may be any value between 0.42 and 0.65 or a range between any two values.

[0079] Optionally, the cover body 10 further includes a support boss 14, which is disposed on the inner side of the corresponding flat portion 11. The first split body 51 includes a main body 511 and a reinforcing insert 512 embedded in the main body 511. The main body 511 is disposed on the inner side of the cover body 10 and is provided with an insertion groove 5113. The support boss 14 is plugged into the insertion groove 5113. The inner side of the flat portion 11 is the side of the flat portion 11 facing the electrode assembly 300.

[0080] By providing a plug-in fit between the supporting boss 14 and the plug-in groove 5113 of the first split body 51, the bonding strength between the cover body 10 and the first split body 51 can be improved; by embedding a reinforcing insert 512 in the first split body 51, the overall strength of the first split body 51 can be improved, thereby improving the supporting strength of the first split body 51 on the raised portion 12, reducing the risk of deformation of the cover body 10 during use, preventing damage to the cover body 10, and improving the safety performance and service life of the battery 1000.

[0081] Optionally, a cavity 5112 is provided inside the main body 511 , and at least a portion of the electrode group 300 is disposed in the cavity 5112 , so as to increase the capacity of the electrode group 300 and increase the capacity utilization rate of the electrode group 300 .

[0082] Alternatively, as Figure 10 As shown, the side of the support boss 14 away from the flat plate portion 11 has a dimension A in the first direction, and the distance between the side of the support boss 14 away from the flat plate portion 11 and the flat plate portion 11 is B, 2.08 mm. 2 ≤A*B≤6mm 2 , to ensure that the support boss 14 has a good strength reinforcement effect on the cover body 10. When the value of A*B is too small, the size of the support boss 14 is insufficient, resulting in weak support force of the support boss 14, and deformation occurs when the cover body 10 is subjected to external force; when the value of A*B is too large, the size of the support boss 14 is too large, resulting in increased weight and cost of the cover body 10, and increased stamping difficulty. For example, the value of A*B can be 2.08mm 2 , 2.5mm 2 , 3mm 2 , 3.5mm 2 , 4mm 2 , 4.5mm 2 , 5mm 2 , 5.5mm 2 or 6mm 2 In other embodiments, the value of A*B may be 2 mm. 2 Up to 6mm 2 Any value or range between any two values.

[0083] Optionally, a dimension A of the side surface of the support boss 14 facing away from the flat plate portion 11 in the first direction satisfies the following: 1.6 mm ≤ A ≤ 3 mm. For example, the value of A can be 1.6 mm, 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, or 3 mm. In other embodiments, the value of A is not limited to this and can be adaptively selected based on actual needs.

[0084] Optionally, the distance B between the side of the support boss 14 facing away from the flat plate portion 11 and the flat plate portion 11 satisfies the following conditions: 1.3 mm ≤ B ≤ 2 mm. For example, the value of B can be 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm or 2 mm. In other embodiments, the value of B is not limited thereto and can be adaptively selected according to actual needs. Optionally, as Figure 12-15 As shown, the reinforcing insert 512 includes a rod portion 5121 and a hook portion 5122. The rod portion 5121 extends along a first direction, and the hook portions 5122 are disposed at both ends of the rod portion 5121 along the first direction. The rod portion 5121 and the hook portion 5122 together form a receiving groove 51201. The supporting boss 14 extends along a second direction, and at least a portion of the supporting boss 14 is located within the receiving groove 51201 and abuts against the rod portion 5121 and / or the hook portion 5122. The first sub-body 51 is formed by overmolding. By configuring the reinforcing insert 512 as the rod portion 5121 and the hook portion 5122, the reinforcing insert 512 can be assembled with the cover plate body 10 to form a single unit. The reinforcing insert 512 and the cover plate body 10 are then placed in an injection molding machine and injection molded to form the first sub-body 51. The second direction is the width direction of the flat plate portion 11.

[0085] In this embodiment, there are two reinforcing inserts 512 , which are spaced apart along the second direction to improve the overall strength of the first split body 51 , thereby improving the support strength of the first split body 51 on the cover body 10 .

[0086] Optionally, at least one through hole 51221 is provided on the hook portion 5122 . By providing the through hole 51221 , plastic can flow into the through hole 51221 during injection molding, thereby improving the bonding strength between the reinforcing insert 512 and the main body 511 .

[0087] Alternatively, as Figure 14 and Figure 15 As shown, the size of the hook portion 5122 along the first direction is L1, and the size of the hook portion 5122 along the second direction is H, 1.43 mm. 2 ≤L1*H≤4mm 2 The above-mentioned size setting ensures that the reinforcing insert 512 has sufficient support force on the first split 51, thereby ensuring support for the cover body 10. When the value of L1*H is too small, the hook portion 5122 of the reinforcing insert 512 is insufficient in size, resulting in weak support force of the first insulating member 50, and deformation of the cover body 10 when subjected to external force; when the value of L1*H is too large, the hook portion 5122 of the reinforcing insert 512 is too large in size, resulting in increased weight and cost of the cover assembly 100. For example, the value of L1*H can be 1.43mm. 2 , 1.5mm2 , 2mm 2 , 2.5mm 2 , 3mm 2 , 3.5mm 2 or 4mm 2 In other embodiments, the value of L1*H may be 1.43 mm. 2 Up to 4mm 2 Any value or range between any two values.

[0088] like Figure 14 As shown, the width of the tie rod portion 5121 is L2, 2mm≤L2≤3.5mm, to ensure that the tie rod portion 5121 has sufficient strength. Exemplarily, the value of L2 can be 2mm, 2.3mm, 2.5mm, 2.8mm, or 3mm. In other embodiments, the value of L2 is not limited to this and can be adaptively selected according to actual needs.

[0089] Table 1

[0090]

[0091]

[0092] Table 1 shows the relationship between the dimension A of the side of the support boss 14 facing away from the flat plate portion 11 in the first direction, the spacing B between the side of the support boss 14 facing away from the flat plate portion 11 and the flat plate portion 11, W1 / W2, the thickness T1 of the flat plate portion 11, the dimension H of the hook portion 5122 along the second direction, the width L2 of the pull rod portion 5121, L1*H, and A*B. Examples 1 to 6 show the values ​​of A, B, W1 / W2, T1, H, L2, L1*H, and A*B for batteries 1000 with a qualified yield rate greater than 98%, while Comparative Examples 1 to 6 show the values ​​of A, B, W1 / W2, L1*H, and A*B for batteries 1000 with a qualified yield rate less than 98%.

[0093] Specifically, after the battery 1000 is assembled, the molding quality, appearance quality, etc. of the battery 1000 are tested to detect the qualified yield rate of the battery 1000 in the process.

[0094] In Examples 1 to 6, the values ​​of A, B, W1 / W2, T1, H, L2, L1*H, and A*B are all within the specified range, and the qualified yield of the battery 1000 is >98%.

[0095] In comparative example 1, the value of W1 / W2 is too small, and the distance ratio of the reinforcing structures 13 is low. On the one hand, the reinforcing effect on the cover body 10 is poor, and on the other hand, the distance between the two reinforcing structures 13 is small, making stamping difficult.

[0096] In comparative example 2, the value of W1 / W2 is too large, and the distance ratio of the reinforcing structure 13 is too large, which will result in a small distance between the edges of the flat plate portion 11 and / or the side panel 122 and the reinforcing structure 13. The flatness of the edges of the flat plate portion 11 and the side panel 122 is difficult to ensure, and stamping is difficult.

[0097] In comparative example 3, the value of L1*H is too small, and the hook portion 5122 of the reinforcing insert 512 is insufficiently sized, resulting in a weak supporting force of the first insulating member 50 , causing deformation of the cover body 10 when subjected to external force.

[0098] In Comparative Example 4, the value of L1*H is too large, and the hook portion 5122 of the reinforcing insert 512 is too large, resulting in an increase in the weight and cost of the cover assembly 100.

[0099] In comparative example 5, the value of A is too small, resulting in a too small value of A*B. The size of the supporting boss 14 is insufficient, resulting in weak supporting force of the supporting boss 14. When the cover body 10 is subjected to external force, it is deformed.

[0100] In comparative example 6, the value of B is too small, resulting in an excessively large value of A*B, and the size of the supporting boss 14 is too large, which increases the weight and cost of the cover body 10 and increases the difficulty of stamping.

[0101] Example 2

[0102] This embodiment provides an electrical device, which includes an electrical device body and the battery 1000 provided in Example 1. The battery 1000 can provide electrical energy to the electrical device body, thereby enabling the electrical device body to automatically complete preset actions through electrical energy, ensuring good performance of the electrical device body, and ensuring the service life and safety performance of the electrical device.

[0103] Specifically, the main body of the electrical device can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, or an electric tool. A vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle; a new energy vehicle can be a pure electric vehicle or a hybrid vehicle; a spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft; an electric toy includes a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy; an electric tool includes a metal cutting power tool, a grinding power tool, an assembly power tool, and a railway power tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, or an electric planer. This embodiment does not limit the main body of the electrical device.

[0104] The following examples are for convenience of description. Figure 16As shown, an embodiment of the present application is described using a vehicle 10000 as an example of an electrical device. Vehicle 10000 is internally provided with a battery 1000, which can be located at the bottom, head, or tail of vehicle 10000. There can be one or more batteries 1000, and multiple batteries 1000 can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to multiple batteries 1000 being connected in both series and parallel configurations.

[0105] Battery 1000 can be used to power vehicle 10000. For example, battery 1000 can serve as an operating power source for vehicle 10000. Vehicle 10000 may also include a controller 2000 and a motor 3000. Controller 2000 is used to control battery 1000 to power motor 3000, for example, to meet the power requirements of vehicle 10000 during startup, navigation, and driving.

[0106] In some embodiments of the present application, the battery 1000 can serve not only as an operating power source for the vehicle 10000, but also as a driving power source for the vehicle 10000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 10000.

[0107] Note that throughout this specification, references to terms such as "some embodiments" and "other embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with those embodiments or examples are included in at least one embodiment or example of the present invention. Throughout this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be incorporated in any suitable manner in any one or more embodiments or examples.

[0108] The above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A cover plate assembly, characterized in that: include: The cover plate body (10) comprises a supporting boss (14), a raised portion (12) and a flat portion (11), wherein the flat portion (11) is arranged at both ends of the raised portion (12) along a first direction, and the supporting boss (14) is arranged on the inner side of the corresponding flat portion (11); The first insulating member (50) includes a first split body (51), wherein the first split body (51) includes a main body (511) and a reinforcing insert (512) embedded in the main body (511), wherein the main body (511) is arranged on the inner side of the cover body (10), and the main body (511) is provided with a plug-in groove (5113), and the supporting boss (14) is plugged into and matched with the plug-in groove (5113).

2. The cover plate assembly according to claim 1, wherein: The reinforcing insert (512) includes a pull rod portion (5121) and a hook portion (5122), the pull rod portion (5121) extends along the first direction, the hook portion (5122) is arranged at both ends of the pull rod portion (5121) along the first direction, the pull rod portion (5121) and the hook portion (5122) together form a receiving groove (51201), the supporting boss (14) extends along the second direction, at least part of the supporting boss (14) is located in the receiving groove (51201) and abuts against the pull rod portion (5121) and / or the hook portion (5122), and the first direction is perpendicular to the second direction.

3. The cover plate assembly according to claim 2, wherein: The size of the hook portion (5122) along the first direction is L1, and the size of the hook portion (5122) along the second direction is H, 1.43 mm. 2 ≤L1*H≤4mm 2 .

4. The cover plate assembly according to claim 2, wherein: At least one through hole (51221) is formed on the hook portion (5122).

5. The cover plate assembly according to any one of claims 1 to 4, characterized in that: The raised portion (12) comprises: Top plate (121); Side plates (122) are provided at both ends of the top plate (121) along the first direction, and the side plates (122) are connected to the corresponding flat plate parts (11).

6. The cover plate assembly according to claim 5, wherein: The cover plate body (10) further includes a reinforcement structure (13), wherein the reinforcement structure (13) is connected to the side plate (122) and / or the flat plate portion (11).

7. The cover plate assembly according to claim 6, wherein: The number of the reinforcing structures (13) at each side plate (122) is two, the dimension of the center lines of the two reinforcing structures (13) in the second direction is W1, the dimension of the side plate (122) in the second direction is W2, and 0.42≤W1 / W2≤0.

65.

8. The cover plate assembly according to any one of claims 1 to 4, characterized in that: The dimension of the side of the support boss (14) away from the flat plate portion (11) in the first direction is A, and the distance between the side of the support boss (14) away from the flat plate portion (11) and the flat plate portion (11) is B, 2.08 mm. 2 ≤A*B≤6mm 2 .

9. A battery comprising a housing (200) and an electrode group (300), characterized in that: It also includes the cover plate assembly according to any one of claims 1 to 8.

10. An electrical device, comprising an electrical device body, characterized in that: Also included is the battery of claim 9.

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