Battery cover plate, battery shell, battery and electric equipment

Abstract

The invention relates to the technical field of batteries, in particular to a battery cover plate, a battery shell, a battery and electric equipment. The battery cover plate comprises a plate body, a first groove and a second groove are formed in the surface of one side of the plate body, the depth of the first groove is smaller than that of the second groove, a liquid injection hole penetrating through the plate body is formed in the bottom of the first groove, and the second groove is used for containing a circuit assembly. According to the battery cover plate disclosed by the embodiment of the invention, the first groove and the second groove are separately arranged, the first groove is used for accommodating the liquid injection hole, and the second groove is used for accommodating the circuit assembly, so that when the battery cover plate is applied to the battery shell, compared with an existing battery shell, the distance between the liquid injection hole and the bottom plate can be effectively increased; and meanwhile, the second groove used for accommodating the circuit assembly can accommodate the circuit assembly, so that the overall structure of the battery shell is more compact.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery cover, a battery housing, a battery and an electrical device. Background Art

[0002] In the field of battery manufacturing, the structure and layout of the battery shell have an important impact on the performance and manufacturing efficiency of the battery. In the prior art, the battery shell usually uses a cover plate with a larger area to facilitate the installation of poles and other components thereon. The battery shell of the prior art usually has an injection hole on the cover plate to inject liquid into the battery. However, with the compact development of the overall structure of the battery, the thickness of the battery shell is also constantly decreasing, resulting in the distance between the injection hole and the inner wall of the battery shell is also constantly decreasing. During the injection operation, the injection needle is very likely to collide with the inner wall of the battery shell and damage the injection needle, the inner wall of the battery shell and / or the pole core, affecting the quality of the battery.

[0003] Therefore, it is necessary to make improvements to the above problems in order to change the current situation. Summary of the invention

[0004] The present application provides a battery cover, a battery shell, a battery and an electrical device, which are used to solve the problem in the prior art that the distance between the injection hole of the battery shell and the bottom plate of the battery shell is too small, and the injection needle is prone to collide with the bottom plate during the injection process.

[0005] A first aspect of the present application provides a battery cover, comprising:

[0006] A board body, wherein a first groove and a second groove are provided on one side surface of the board body, the groove depth of the first groove is smaller than the groove depth of the second groove, a liquid injection hole penetrating the board body is provided on the bottom of the first groove, and the second groove is used to accommodate the circuit component.

[0007] In one possible implementation, the plate body includes an inclined portion and a flat plate portion connected to each other, the inclined portion and the flat plate portion are arranged along a first direction, and the inclined portion is inclined from one side of the plate body toward the other opposite side; the first groove and the second groove are arranged on the inclined portion.

[0008] In a possible implementation manner, the first groove and the second groove are arranged on the inclined portion along a second direction, and the first direction and the second direction are arranged at an angle.

[0009] In a possible implementation, in the second direction, the first groove is located at an edge close to an end portion of one side of the inclined portion.

[0010] In a possible implementation, the first groove is a rectangular groove or a circular groove, and the injection hole is a square hole or a circular hole.

[0011] In a possible implementation, the width of the first groove is 3-8 mm.

[0012] In a possible implementation, the edge of the first groove is provided with a rounded corner, and the radius of the rounded corner is 0.2-1 mm.

[0013] In a possible implementation, the first groove is a circular groove, the injection hole is a circular hole, and the diameter of the injection hole is smaller than the diameter of the circular groove.

[0014] In a possible implementation, the aperture of the first groove is 2-8 mm.

[0015] In a possible implementation, one side surface of the plate body is punched to form the first groove and the second groove.

[0016] A second aspect of the present application provides a battery housing, comprising:

[0017] a housing structure; and

[0018] As described in any one of the above battery cover plates, the battery cover plate is connected to the shell structure and encloses a receiving cavity, and the injection hole opened on the first groove of the battery cover plate is communicated with the receiving cavity.

[0019] In a possible implementation, the battery housing further includes a sealing assembly, and the sealing assembly is accommodated in the first groove and sealed to the liquid injection hole.

[0020] In one possible implementation, the sealing assembly includes a sealing plug and a sealing cover, the sealing plug is embedded in the injection hole, the sealing cover is located in the first groove and covers the sealing plug, and the side of the sealing cover away from the injection hole is not higher than the side surface of the battery cover away from the shell structure.

[0021] In one possible implementation, the sealing assembly includes a sealing sheet, which is sealed at the injection hole and accommodated in the first groove, and a side of the sealing sheet away from the injection hole is not higher than a side surface of the battery cover away from the shell structure.

[0022] In a possible implementation, the sealing sheet has a thickness of 0.03-0.1 mm.

[0023] In one possible implementation, the shell structure includes a frame and a bottom plate, the bottom plate is connected to the frame, and the battery cover is arranged on a side of the frame away from the bottom plate; the distance between one end of the battery cover where the first groove is opened and the bottom plate is H1, and the distance between the other end of the battery cover away from the first groove and the bottom plate is H2, and the following relationship is satisfied: H2-H1>0.1mm.

[0024] In one possible implementation, H1 is 1.5 mm-6.5 mm.

[0025] In one possible implementation, the battery housing includes a steel shell or a titanium alloy shell.

[0026] A third aspect of the present application provides a battery, comprising:

[0027] A battery housing as described in any one of the above;

[0028] A pole core, accommodated in the battery casing; and

[0029] The circuit component is accommodated in the second groove of the battery shell, and the circuit component is at least partially electrically connected to the pole core.

[0030] In one possible implementation, the second groove is provided with a connection hole connected to the interior of the battery casing, the battery includes a pole, the circuit assembly includes a circuit board and a flexible circuit board, the pole is embedded in the connection hole and is electrically connected to the pole core, the circuit board is accommodated in the second groove and is electrically connected to the pole, and the flexible circuit board is connected to the circuit board.

[0031] In a possible implementation, the battery further includes an insulating member, the pole is inserted into the insulating member and is electrically connected to the pole core, and the insulating member is used to separate the pole and the battery casing.

[0032] A fourth aspect of the present application provides an electrical device, including an electrical device and a battery as described in any one of the above items, wherein the battery is connected to the electrical device and is used to supply power to the electrical device.

[0033] Implementing the embodiments of the present application has the following beneficial effects:

[0034] In the battery cover of the present embodiment, the first groove and the second groove are separately provided, the first groove is used to accommodate the injection hole, and the second groove is used to accommodate the circuit component. When the battery cover is applied to the battery shell, compared with the existing battery shell, the distance between the injection hole and the bottom plate can be effectively increased to avoid the collision between the injection needle and the bottom plate. At the same time, the second groove for accommodating the circuit component can accommodate the circuit component to make the overall structure of the battery shell more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A three-dimensional view of a battery cover in an embodiment of the present application is shown;

[0037] Figure 2 A three-dimensional view of a battery in an embodiment of the present application is shown;

[0038] Figure 3 A top view of a battery in an embodiment of the present application is shown;

[0039] Figure 4 Shows Figure 3 Sectional view along line AA;

[0040] Figure 5 Shows Figure 3 A schematic cross-sectional view of part of the structure along line BB;

[0041] Figure 6 Shows Figure 4 A magnified view of the part C in the middle;

[0042] Figure 7 An exploded view of a local structure of a battery in an embodiment of the present application in another embodiment is shown.

[0043] Reference numerals:

[0044] 01-Battery;

[0045] 10-battery housing;

[0046] 100 - battery cover; 110 - inclined portion; 111 - first groove; 1111 - injection hole; 112 - second groove; 1121 - connection hole; 120 - flat plate portion;

[0047] 200-housing structure; 210-frame; 220-bottom plate;

[0048] 300-sealing assembly; 310-sealing plug; 320-sealing cover; 330-sealing sheet;

[0049] 20-circuit assembly; 21-circuit board; 22-flexible circuit board;

[0050] 30-Pole core. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0052] For ease of description, refer to Figure 1 As shown, the X direction in the figure is defined as the first direction, and the Y direction in the figure is defined as the second direction, such as Figure 1 In the illustrated embodiment, the X direction is perpendicular to the Y direction. In this case, the first direction may be the length direction of the battery cover 100, and the second direction may be the width direction of the battery cover 100. Of course, in some embodiments, the first direction and the second direction may intersect and be arranged at an angle, with a specific angle of 0-90°. The angle between the first direction and the second direction is determined by the design requirements of the battery cover 100 and is not limited here.

[0053] In the battery case in the prior art, a strip-shaped groove is usually provided on the cover plate of the case, the circuit board is arranged in the groove, and the injection hole also passes through the bottom surface of the groove and is connected to the interior of the battery case. The disadvantage of this structure is that, in order to ensure that the battery case has a smaller thickness, the depth of the groove needs to be matched with the circuit board so that the circuit board can be accommodated in the groove and does not protrude from the surface of the battery case as much as possible, which results in the depth of the groove needing to be as deep as possible, and at this time the distance between the bottom surface and the bottom plate of the battery case will be further shortened.

[0054] Technicians have found that in order to avoid splashing of electrolyte during injection, it is usually necessary to pass the output port of the injection needle through the injection hole and extend it into the battery shell. When injecting liquid into a battery using such a battery shell, since the distance between the injection hole and the bottom plate of the battery shell is small, the end of the injection needle is very likely to come into contact and bump against the bottom plate during injection, which will damage the injection needle. In addition, the tip of the injection needle is also likely to damage the inner wall of the bottom plate. In severe cases, it may even cause the bottom plate to protrude outward or pierce the bottom plate, affecting the injection quality and battery yield during the battery manufacturing process.

[0055] In view of the above technical problems, the present application proposes a battery cover, a battery housing, a battery and an electrical device. Figures 1 to 7 As shown, an embodiment of the present invention provides a battery cover 100, which includes a plate body, and a first groove 111 and a second groove 112 are provided on one side surface of the plate body, the groove depth of the first groove 111 is less than the groove depth of the second groove 112, and a liquid injection hole 1111 penetrating the plate body is opened on the bottom of the first groove 111, and the second groove 112 is used to accommodate the circuit component 20.

[0056] In the battery cover 100 of the present application, a first groove 111 and a second groove 112 are separately provided, the first groove 111 is used to accommodate the injection hole 1111, and the second groove 112 is used to accommodate the circuit assembly 20. When the battery cover 100 is applied to the battery housing 10, compared with the existing battery housing 10, the distance between the injection hole 1111 and the bottom plate 220 can be effectively increased to avoid collision between the injection needle and the bottom plate 220. At the same time, the second groove 112 for accommodating the circuit assembly 20 can accommodate the circuit assembly 20 to make the overall structure of the battery housing more compact.

[0057] Specific reference Figure 1 As shown, in the present embodiment, since the first groove 111 and the second groove 112 are separated and spaced apart, the depth dimension of the first groove 111 provided with the injection hole 1111 is smaller than that of the second groove 112, and the end surface of the first groove 111 and the end surface of the second groove 112 are not in the same plane. When the battery cover 100 is equipped into the battery housing 10, the distance between the injection hole 1111 and the bottom plate 220 of the battery housing 10 is longer than the distance between the end surface of the second groove 112 and the bottom plate 220. This provides a larger accommodating space for the end of the injection needle, so as to improve the phenomenon that the injection needle is easily in contact with the bottom plate 220 of the battery housing 10 in the prior art.

[0058] In one embodiment, the plate body includes an inclined portion 110 and a flat plate portion 120 connected to each other, the inclined portion 110 and the flat plate portion 120 are arranged along a first direction (for example, an X direction), and the inclined portion 110 is inclined from one side of the plate body toward the other opposite side; the first groove 111 and the second groove 112 are provided on the inclined portion 110.

[0059] In this embodiment, by setting the inclined portion 110 to cooperate with the flat portion 120, the concave direction of the first groove 111 and the second groove 112 is the same as the inclination direction of the inclined portion 110. At this time, after the battery cover 100 is assembled into the battery housing 10, the thickness dimension of the battery housing 10 at the inclined portion 110 can be made smaller than the dimension of the battery housing 10 at the flat portion 120. Moreover, since the first groove 111 and the second groove 112 are provided on the inclined portion 110, the battery cover 100 can have a larger accommodating space on the inclined portion 110. When the circuit assembly 20 is accommodated in the second groove 112, the battery housing 10 can still have a smaller thickness dimension, and the size of the battery housing 10 in its extension direction can be uniform, thereby avoiding the phenomenon that the circuit assembly 20 protrudes outward from the surface of the battery housing 10, so as to meet the compact design requirements of the battery 01 and the battery housing 10.

[0060] See also Figure 1 As shown, in one embodiment, the first groove 111 and the second groove 112 are arranged on the inclined portion 110 along the second direction (eg, the Y direction), and the first direction is set at an angle to the second direction, for example, the first direction and the second direction may be perpendicular.

[0061] In the present embodiment, the inclined portion 110 is disposed on one side of the flat portion 120 and extends along the second direction. At this time, by arranging the first groove 111 and the second groove 112 along the second direction, the first groove 111 and the second groove 112 can make full use of the space of the inclined portion 110, so that the overall structure of the battery cover 100 is compact; in some embodiments, the second groove 112 is a strip groove, and the second groove 112 extends along the second direction. At this time, the first groove 111 and the second groove 112 can make full use of the space of the inclined portion 110 in the second direction and be evenly distributed on the inclined portion 110, avoiding occupying the space of the inclined portion 110 in the first direction, so that the structure of the inclined portion 110 is more compact. Of course, in other embodiments, the first groove 111 and the second groove 112 can also be arranged in the first direction or other directions, which is specifically determined according to the design requirements of the battery cover 100, and will not be repeated here.

[0062] In one embodiment, in the second direction, the first groove 111 is located at an edge close to one end of the inclined portion 110 .

[0063] refer to Figure 1 and Figure 2As shown, by arranging the first groove 111 at the outer edge of the end close to the inclined portion 110, the first groove 111 can be made as close to one side edge (or one side corner) of the battery cover 100 as possible. At this time, the first groove 111 where the injection hole 1111 is located is located in a space to avoid air. Since the second groove 112 and the first groove 111 are arranged at intervals, the installation of the circuit assembly 20 in the second groove 112 will not affect the injection operation of the injection hole 1111, so as to improve the processing efficiency and quality of the injection process in the subsequent processing of the battery cover 100. Of course, in other embodiments, the first groove 111 can also be arranged at other parts on the inclined portion 110 to facilitate the addition of liquid during the manufacturing process of the battery 01, or to adapt to the design requirements of batteries 01 with different structures. In addition, in some embodiments, the first groove 111 can also be arranged on the flat plate portion 120. At this time, the first groove 111 is preferably arranged at a position avoiding the pole core 30 in the battery 01 to avoid damaging the pole core 30 during the injection process.

[0064] See also Figure 1 As shown, in one embodiment, the first groove 111 is a rectangular groove or a circular groove, and the injection hole 1111 is a square hole or a circular hole.

[0065] In this embodiment, by setting the injection hole 1111 as a circular hole, it is convenient to subsequently assemble the corresponding sealing element in the injection hole 1111, and it is also convenient to process and shape the injection hole 1111, which has a simple structure and high processing convenience. In addition, by setting the first groove 111 as a rectangular groove to cooperate with the injection hole 1111 of the circular hole, the distance between the injection hole 1111 and the side of the first groove 111 can be reduced, thereby ensuring the support strength of the first groove 111 to the injection hole 1111, preventing the injection hole 1111 from deforming when it is under pressure, and improving the welding performance of the sealing welding process when the sealing element seals the injection hole 1111.

[0066] In addition, the shape of the first groove 111 can be determined according to the actual design requirements of the battery 01, and the first groove 111 can be a rectangular groove or a circular groove, see Figure 1 As shown, the first groove 111 is a rectangular groove, so that the edge of the first groove 111 can be flush with the edge of the inclined portion 110. Of course, in some embodiments, the first groove 111 can also be a circular groove, which is not limited here. Figure 1 In the illustrated embodiment, the injection hole 1111 is a circular hole so that the internal stress of the injection hole 1111 is more uniform and easier to process. In other embodiments, the injection hole 1111 may also be a square hole. In this way, when the first groove 111 is a rectangular groove, the first groove 111 may be arranged around the injection hole 1111 to further improve the strength of the injection hole 1111.

[0067] Specifically in some embodiments, the width of the first groove 111 is 3-8 mm.

[0068] By setting the width of the first groove 111 to 3-8 mm, the aperture of the injection hole 1111 can be set to be no greater than 3 mm, so that the injection hole 1111 can correspond to the size of the injection needle, and the aperture of the injection hole 1111 can be as small as possible while facilitating injection, so as to facilitate the subsequent selection and assembly of sealing elements. In some embodiments, the first groove 111 can also be a square groove. By cooperating with the injection hole 1111, the edge of the hole of the injection hole 1111 can be evenly stressed, further improving the strength of the injection hole 1111 and the first groove 111. Specifically, the width of the first groove 111 can be 3 mm, 5 mm, or 8 mm. Of course, since the first groove 111 can be a rectangular groove, the size between the long side and the short side of the first groove 111 can be different, and no unique limitation is made here.

[0069] Furthermore, the edge of the first groove 111 is rounded, and the radius of the rounded corner is 0.2-1 mm.

[0070] In this embodiment, by setting rounded corners on the edge of the rectangular groove first groove 111, the overall strength of the first groove 111 can be effectively improved, so as to increase the support strength provided by the first groove 111 to the injection hole 1111, and further prevent the injection hole 1111 from being deformed.

[0071] See also Figure 7 As shown, in another embodiment, the first groove 111 is a circular groove, the injection hole 1111 is a circular hole, and the diameter of the injection hole 1111 is smaller than the diameter of the circular groove.

[0072] In this embodiment, the first groove 111 and the injection hole 1111 are coaxially arranged so that the distances between the edge of the injection hole 1111 and the side of the first groove 111 are equal at each position, further improving the force uniformity of the injection hole 1111, thereby improving the strength of the inclined portion 110 at the injection hole 1111. Specifically, in some embodiments, the aperture of the first groove 111 is 2-8 mm.

[0073] Specifically in one embodiment, a first groove 111 and a second groove 112 are formed by stamping on one side surface of the plate body. It can be understood that the first groove 111 and the second groove 112 are formed by stamping, which is convenient to process and has low manufacturing cost. Of course, in other embodiments, the first groove 111 and the second groove 112 can also be directly formed in the preparation process of the battery cover 100 by methods such as casting and 3D printing, or the first groove 111 and the second groove 112 can be formed by split processing and then welded with the inclined portion 110 to form the overall structure of the battery cover 100, which is not limited here. Specifically, the aperture of the first groove 111 can be 2mm, 3mm, 6mm, 8mm, which is determined according to the design requirements of the injection hole 111, and is not limited here. In addition, since the diameter of the injection hole 1111 needs to be smaller than the first groove 111, the aperture of the first groove 111 can be selected according to the actual size of the injection hole 1111 in the design stage, and the size within the limited range can be selected according to the design requirements while ensuring the strength of the injection hole 1111.

[0074] See also Figure 1 and Figure 2 As shown, the present invention further provides a battery shell 10, which includes the battery cover plate 100 and the shell structure 200 in any of the above embodiments, the battery cover plate 100 is connected to the shell structure 200 and forms a accommodating cavity, and the injection hole 1111 opened on the first groove 111 of the battery cover plate 100 is connected to the accommodating cavity.

[0075] It can be understood that, in the battery shell 10 of the present embodiment, by setting the battery cover 100 in any of the above embodiments, the battery cover 100 of the present embodiment is separately set with a first groove 111 and a second groove 112, the first groove 111 is used to accommodate the injection hole 1111, and the second groove 112 is used to accommodate the circuit component 20; after the battery cover 100 is combined with the shell structure 200, the distance between the battery cover 100 at the first groove 111 and the bottom surface of the accommodating cavity of the shell structure 200 is greater than the distance between the second groove 112 and the bottom surface of the accommodating cavity, thereby providing sufficient installation space for the circuit component 20 at the second groove 112, and ensuring that there is a sufficient distance between the injection hole 1111 and the bottom surface of the accommodating cavity for injection, so as to avoid contact and collision between the injection needle and the bottom surface of the accommodating cavity, the overall structure of the battery shell 10 is more compact, and the processing quality of the battery shell 10 is effectively improved.

[0076] Furthermore, the battery housing 10 further includes a sealing assembly 300 , and the sealing assembly 300 is accommodated in the first groove 111 and sealed to the injection hole 1111 .

[0077] Thus, by arranging the sealing assembly 300 to cooperate with the battery cover plate 100 , after the liquid injection process is completed, the sealing assembly 300 can be sealed at the opening of the liquid injection hole 1111 to achieve the overall sealing of the battery housing 10 .

[0078] See also Figure 4 and Figure 6 As shown, in one embodiment, the sealing assembly 300 includes a sealing plug 310 and a sealing cover 320, the sealing plug 310 is embedded in the injection hole 1111, the sealing cover 320 is located in the first groove 111 and covers the sealing plug 310, and the side of the sealing cover 320 away from the injection hole 1111 is not higher than the side surface of the battery cover plate 100 away from the shell structure 200.

[0079] In this embodiment, the sealing plug 310 can be made of a flexible material such as rubber, silicone or a hard material. The sealing plug 310 can be connected to the injection hole 1111 by interference fit to preliminarily seal the injection hole 1111. After the sealing plug 310 is installed in the injection hole 1111, the sealing cover 320 is placed in the first groove 111 and connected and sealed with the battery cover 100 by bonding or welding to ensure the sealing effect of the sealing assembly 300. By arranging the sealing cover 320 in the first groove 111, the thickness of the sealing cover 320 can be set to be no higher than the depth of the first groove 111. In this way, when the sealing cover 320 is connected to the battery cover 100, the top of the sealing cover 320 can be made no higher than the surface of the inclined portion 110, so that the surface of the battery cover 100 and the sealing assembly 300 is flat after the assembly is completed.

[0080] See also Figure 7 As shown, in another embodiment, the sealing assembly 300 includes a sealing sheet 330, which is sealed at the injection hole 1111 and accommodated in the first groove 111, and the side of the sealing sheet 330 away from the injection hole 1111 is not higher than the side surface of the battery cover 100 away from the shell structure 200. Specifically, the thickness of the sealing sheet 330 is 0.03-0.1 mm.

[0081] In this embodiment, the sealing sheet 330 is provided to be sealed and connected with the injection hole 1111. The sealing sheet 330 can be a metal sheet formed by punching and forming, which has a simple process and low manufacturing cost. During the assembly process, the installation of the sealing sheet 330 can be positioned by the first groove 111. The shape of the sealing sheet 330 can be consistent with the shape of the first groove 111. The sealing sheet 330 can be a circular metal sheet or a square metal sheet. The material of the sealing sheet 330 can be 304 stainless steel, 316L stainless steel, or a composite nickel sheet, preferably 304 or 316L stainless steel. The sealing sheet 330 is sealed at the injection hole 1111 by welding or bonding.

[0082] Specifically, see Figure 4 and Figure 6 As shown, the shell structure 200 includes a frame 210 and a bottom plate 220, the bottom plate 220 is connected to the frame 210, and the battery cover 100 is covered on the side of the frame 210 away from the bottom plate 220; the distance between one end of the battery cover 100 where the first groove 111 is opened and the bottom plate 220 is H1, and the distance between the other end of the battery cover 100 away from the first groove 111 and the bottom plate 220 is H2, and the following relationship is satisfied: H2-H1>0.1mm.

[0083] According to this configuration, the frame 210 and the base plate 220 can be formed by, for example, welding, or can be integrally formed by, for example, stamping, reverse extrusion, etc. During the assembly process, the battery cover plate 100 can be sealed and connected to the frame 210 by welding, and enclosed with the shell structure 200 to form a accommodating cavity.

[0084] In the battery housing 10 of this embodiment, by adopting the battery cover 100 in any of the above embodiments, the height H1 of the battery housing 10 can be made smaller than the height H2, so that the battery housing 10 has a larger installation space at the inclined portion 110 for accommodating the circuit assembly 20, and the battery housing 10 has a smaller thickness. The thickness is determined specifically according to the thickness of the circuit assembly 20 of the battery 01.

[0085] See also Figure 4 As shown, in some embodiments, the angle R formed between the inclined portion 110 and the flat portion 120 is in the range of 0-10°. Figure 4 In the embodiment shown, R is 5°. When the angle R is too large, the end of the inclined portion 110 away from the flat portion 120 will be too close to the bottom plate 220. Although the installation space of the inclined portion 110 is larger, the distance between the injection hole 1111 and the bottom plate 220 will be compressed. In some embodiments, H1 is 1.5 mm-6.5 mm, which can be selected according to different battery specifications.

[0086] Specifically, in some embodiments, the battery housing 10 of the present application is suitable for ultra-thin batteries, and H1 is 1.5 mm to 3.5 mm. In some embodiments, the battery housing 10 can be a steel shell, or a titanium alloy shell, so that the battery housing 10 has a lighter weight and better thermal conductivity, so as to improve the heat dissipation effect of the battery housing 10, facilitate welding and forming, and improve the deformation resistance of the battery housing 10.

[0087] See also Figures 2 to 7As shown, the present invention further provides a battery 01, which includes a battery case 10 in any of the above embodiments, as well as a circuit component 20 and a pole core 30; the pole core 30 is an energy storage element and is accommodated in the battery case 10; the circuit component 20 is accommodated in the second groove 112 of the battery case 10, and the circuit component 20 is at least partially electrically connected to the pole core 30.

[0088] It can be understood that in the battery 01 of the present embodiment, by providing a battery housing 10 having a battery cover 100 in any of the above embodiments, the battery cover 100 of the present embodiment is provided with a first groove 111 and a second groove 112 by splitting, the first groove 111 is used to accommodate the injection hole 1111, and the second groove 112 is used to accommodate the circuit assembly 20. Compared with the existing battery 01, the distance between the injection hole 1111 and the bottom plate 220 can be effectively increased to avoid collision between the injection needle and the bottom plate 220. At the same time, the second groove 112 for accommodating the circuit assembly 20 can accommodate the circuit assembly 20, so that the overall structure of the circuit housing is more compact, and the processing quality of the battery 01 is effectively improved, and the processing difficulty is reduced. Specifically, the battery 01 can be a thin steel shell battery or a square shell battery.

[0089] In one embodiment, the top of the circuit assembly 20 is not higher than the top surface of the inclined portion 110. Thus, after the battery housing 10 and the circuit assembly 20 are assembled, the surface of the battery housing 10 can be made flat so that the battery 01 as a whole has a smaller thickness; of course, in other embodiments, the circuit assembly 20 may also be not higher than the flat portion 120. In this case, the battery housing 10 can remain flat on the plane where the surface of the flat portion 120 is located.

[0090] Specifically, see Figure 1 and Figure 2 As shown, the second groove 112 is provided with a connection hole 1121 connected to the interior of the battery housing 10, the battery 01 includes a pole (not shown in the figure) electrically connected to the pole core 30, the circuit assembly 20 includes a circuit board 21 and a flexible circuit board 22, the pole is embedded in the connection hole 1121 and is electrically connected to the pole core 30, the circuit board 21 is accommodated in the second groove 112 and is electrically connected to the pole, and the flexible circuit board 22 is connected to the circuit board 21 and is bent and stacked on the side of the circuit board 21 away from the pole.

[0091] In this embodiment, the pole can be electrically connected to the positive pole of the pole core 30 and the positive pole of the circuit board 21, the negative pole of the pole core 30 is connected to the battery case 10, the negative pole of the circuit board 21 is electrically connected to the battery case 10, the circuit board 21 is connected to the flexible circuit board 22, and the flexible circuit board 22 can also be bent and stacked on the side of the circuit board 21 away from the pole, and the circuit of the circuit board 21 is led out for connection with an external electrical device.

[0092] It is understandable that, since the circuit board 21 needs to be connected to an external electrical device through the flexible circuit board 22, the flexible circuit board 22 needs to be led out from one side of the battery casing 10 after being bent. This will cause the flexible circuit board 22 to occupy part of the space in the thickness direction of the battery 01, resulting in a decrease in the space utilization of the battery 01 in the thickness direction, which is not conducive to the thinning of the battery or electronic device.

[0093] To solve the above problems, see Figure 2 and Figure 3 As shown, in this embodiment, the flexible circuit board 22 can be stacked in the second groove 112 as much as possible and extend outward from the second groove 112. At this time, the battery housing 10 is set to H2-H1> the thickness of the flexible circuit board 22. In this way, when the second groove 112 at the flexible circuit board 22 extends outward, the top surface of the flexible circuit board 22 can still be no higher than the flat plate 120, so as to improve the space utilization of the battery 01, which is conducive to achieving the design requirements of the thin battery 01. In one embodiment, H2-H1>0.1mm, which can be specifically determined according to the thickness of the flexible circuit board 22.

[0094] Furthermore, the battery 01 also includes an insulating member (not shown in the figure), the pole is inserted into the insulating member and is electrically connected to the pole core 30, and the insulating member is used to separate the pole and the battery housing 10.

[0095] In this embodiment, the pole core 30 can be a winding or laminated structure, and a positive pole ear and a negative pole ear are convexly provided on one side of the pole core 30; the pole column is inserted into the insulating member, and the insulating member insulates the pole column from the battery housing 10. At this time, the negative pole ear of the pole core 30 can be electrically connected to the battery housing 10 to make the battery housing 10 negatively charged, and the positive pole ear of the pole core 30 is electrically connected to the positive pole of the circuit board 21 through the pole column. The insulating member can be an insulating sleeve or an insulating gasket, which is not limited here. The battery 01 also includes an insulating layer (not shown in the figure), which is respectively arranged between the positive pole ear and the negative pole ear and is used to insulate the positive pole ear and the negative pole ear. The insulating layer can be attached or coated on the bottom plate 220 to save the internal space of the battery housing 10. The insulating layer can be an insulating tape, an insulating coating or an insulating sheet, which is not limited here.

[0096] The present invention further provides an electrical equipment, which includes an electrical device and the battery 01 in any one of the above embodiments, wherein the battery 01 is connected to the electrical device and is used to supply power to the electrical device.

[0097] It can be understood that the electrical equipment provided in the embodiments of the present application can improve the space utilization inside the electrical equipment by using the battery in any of the above embodiments to power the electrical device, which is conducive to the lightweight and miniaturized design of the electrical equipment.

[0098] In the embodiments of the present application, the power-consuming device may also be a smart wearable device, such as a smart watch. The power-consuming device may also be a mobile phone, a tablet computer, or a laptop computer, etc. In some embodiments, the power-consuming device may also be a vehicle, and the vehicle may be a new energy vehicle (New Energy Vehicle), such as a pure electric vehicle (Pure Electric Vehicle / Battery Electric Vehicle; referred to as: PEV / BEV), a range extended electric vehicle (Range Extended Electric Vehicle; referred to as: REEV), a hybrid electric vehicle (Hybrid Electric Vehicle; referred to as: HEV), a fuel cell electric vehicle), and the vehicle may also be any vehicle having a battery 01. The power-consuming device may also be an energy storage power station.

[0099] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do 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 limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0100] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0101] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery cover (100), characterized in that: include: A board body, wherein a first groove (111) and a second groove (112) are provided on one side surface of the board body, the groove depth of the first groove (111) is smaller than the groove depth of the second groove (112), a liquid injection hole (1111) penetrating the board body is provided on the groove bottom of the first groove (111), and the second groove (112) is used to accommodate a circuit component (20).

2. The battery cover (100) according to claim 1, characterized in that: The plate body comprises an inclined portion (110) and a flat plate portion (120) connected to each other, wherein the inclined portion (110) and the flat plate portion (120) are arranged along a first direction, and the inclined portion (110) is inclined from one side of the plate body toward the other opposite side; the first groove (111) and the second groove (112) are provided on the inclined portion (110).

3. The battery cover (100) according to claim 2, characterized in that: The first groove (111) and the second groove (112) are arranged on the inclined portion (110) along a second direction, and the first direction and the second direction are arranged at an angle.

4. The battery cover (100) according to claim 3, characterized in that: In the second direction, the first groove (111) is located at an edge close to one end of the inclined portion (110).

5. The battery cover (100) according to any one of claims 1 to 4, characterized in that: The first groove (111) is a rectangular groove or a circular groove, and the injection hole (1111) is a square hole or a circular hole.

6. The battery cover (100) according to any one of claims 1 to 4, characterized in that: The width of the first groove (111) is 3-8 mm.

7. The battery cover (100) according to any one of claims 1 to 4, characterized in that: The edge of the first groove (111) is provided with a rounded corner, and the radius of the rounded corner is 0.2-1 mm.

8. The battery cover (100) according to any one of claims 1 to 4, characterized in that: The first groove (111) is a circular groove, the injection hole (1111) is a circular hole, and the diameter of the injection hole (1111) is smaller than the diameter of the circular groove.

9. The battery cover (100) according to claim 8, characterized in that: The aperture of the first groove (111) is 2-8 mm.

10. The battery cover (100) according to any one of claims 1 to 9, characterized in that: The first groove (111) and the second groove (112) are formed on one side surface of the plate body by stamping.

11. A battery housing (10), characterized in that: include: Shell structure (200); as well as The battery cover (100) according to any one of claims 1 to 10, wherein the battery cover (100) is connected to the shell structure (200) and encloses a receiving cavity, and the injection hole (1111) opened on the first groove (111) of the battery cover (100) is communicated with the receiving cavity.

12. The battery housing (10) according to claim 11, characterized in that: The battery housing (10) further comprises a sealing assembly (300), and the sealing assembly (300) is accommodated in the first groove (111) and sealed to the liquid injection hole (1111).

13. The battery housing (10) according to claim 12, characterized in that: The sealing assembly (300) comprises a sealing plug (310) and a sealing cover (320), wherein the sealing plug (310) is embedded in the liquid injection hole (1111), and the sealing cover (320) is located in the first groove (111) and covers the sealing plug (310), and a side of the sealing cover (320) away from the liquid injection hole (1111) is not higher than a side surface of the battery cover plate (100) away from the shell structure (200).

14. The battery housing (10) according to claim 12, characterized in that: The sealing assembly (300) comprises a sealing sheet (330), the sealing sheet (330) being sealed at the injection hole (1111) and accommodated in the first groove (111), and a side of the sealing sheet (330) away from the injection hole (1111) is not higher than a side surface of the battery cover plate (100) away from the shell structure (200).

15. The battery housing (10) according to claim 14, characterized in that: The sealing sheet (330) has a thickness of 0.03-0.1 mm.

16. The battery housing (10) according to claim 11, characterized in that: The housing structure (200) comprises a frame (210) and a bottom plate (220), wherein the bottom plate (220) is connected to the frame (210), and the battery cover plate (100) is arranged on a side of the frame (210) away from the bottom plate (220); the distance between one end of the battery cover plate (100) on which the first groove (111) is opened and the bottom plate (220) is H1, and the distance between the other end of the battery cover plate (100) away from the first groove (111) and the bottom plate (220) is H2, and the following relationship is satisfied: H2-H1>0.1 mm.

17. The battery housing (10) according to claim 16, characterized in that The H1 is 1.5 mm-6.5 mm.

18. The battery housing (10) according to claim 11, characterized in that: The battery housing (10) comprises a steel shell or a titanium alloy shell.

19. A battery (01), characterized in that: include: The battery housing (10) according to any one of claims 11 to 18; A pole core (30) is accommodated in the battery casing (10); and The circuit component (20) is accommodated in the second groove (112) of the battery housing (10), and the circuit component (20) is at least partially electrically connected to the pole core (30).

20. The battery (01) according to claim 19, characterized in that The second groove (112) is provided with a connection hole (1121) connected to the interior of the battery housing (10); the battery (01) comprises a pole; the circuit assembly (20) comprises a circuit board (21) and a flexible circuit board (22); the pole is embedded in the connection hole (1121) and is electrically connected to the pole core (30); the circuit board (21) is accommodated in the second groove (112) and is electrically connected to the pole; and the flexible circuit board (22) is connected to the circuit board (21).

21. The battery (01) according to claim 20, characterized in that The battery (01) further comprises an insulating member, the pole is inserted into the insulating member and is electrically connected to the pole core (30), and the insulating member is used to separate the pole and the battery casing (10).

22. An electrical equipment, characterized in that: It comprises an electrical device and a battery (01) as claimed in any one of claims 19 to 21, wherein the battery (01) is connected to the electrical device and is used to supply power to the electrical device.

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