Battery frame, battery case, battery, battery assembly, and electric device

Abstract

The utility model discloses a kind of frame of battery, shell of battery, battery, battery assembly and electric equipment, the frame of battery, comprising: two first side edges relatively arranged along first direction, the first side edge extends along second direction;Second side edge, the second side edge extends along the first direction, the first direction and the second direction exist angle, the opposite ends of the second side edge along the first direction are connected to two first side edges respectively;Wherein, the second side edge is provided with step portion, the opposite ends of the step portion along the first direction are connected to two first side edges respectively, the first side edge and the second side edge are integrally formed.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery frame, a battery casing, a battery, a battery assembly, and an electrical device. Background Technology

[0002] For electronic devices such as mobile phones and tablets, batteries are an important component. With the development of technology and user needs, batteries are becoming thinner and lighter.

[0003] In related technologies, to achieve thinner and lighter batteries, the terminals are usually mounted on a large cover plate to increase the layout space at the conductive connection. At the same time, the cover plate is provided with grooves to accommodate components such as circuit boards. For the casing of this battery structure, the cover plate is usually processed into an irregular shape and then welded to other parts of the casing. This results in the casing having many parts, complex assembly, poor overall structural strength, and high welding difficulty. Furthermore, when applied to ultra-thin casings, the side plate components are long and thin, which are prone to deformation, making it difficult to ensure the straightness of the casing. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. This invention further proposes a battery casing.

[0005] This utility model further proposes a battery.

[0006] This utility model further proposes a battery assembly.

[0007] This utility model further proposes an electrical device.

[0008] According to a first aspect of the present invention, the battery frame includes: two first side edges disposed opposite to each other along a first direction, the first side edges extending along a second direction; a second side edge extending along the first direction, the first direction and the second direction forming an angle, the two ends of the second side edge opposite to each other along the first direction being respectively connected to the two first side edges; wherein, the second side edge is provided with a stepped portion, the two ends of the stepped portion opposite to each other along the first direction being respectively connected to the two first side edges, the first side edge and the second side edge being integrally formed.

[0009] Therefore, by setting this frame, the structural strength can be enhanced, the straightness can be guaranteed, the number of shell parts can be reduced, and the assembly efficiency can be improved.

[0010] In some examples of this utility model, the step portion includes: a first step wall and a second step wall, the second step wall being connected to one end of the first step wall in the width direction, the second step wall having an angle with the thickness direction of the first step wall, and the second step wall extending in the second direction toward the side away from the first step wall.

[0011] In some examples of this utility model, the second side further includes a straight plate segment connected to the end of the second step wall away from the first step wall, with an angle between the thickness direction of the straight plate segment and the thickness direction of the second step wall, and the first step wall and the straight plate segment located on opposite sides of the thickness direction of the second step wall.

[0012] In some examples of this utility model, the width of the first step wall is h1, the width of the straight plate segment is h2, the thickness of the second step wall is h3, and the width of the second side is W1. h1, h2, h3 and W1 satisfy the relationship: W1=h1+h2+h3.

[0013] In some examples of this utility model, h2 satisfies the relationship: h2≥0.2mm.

[0014] In some examples of this utility model, h1 and W1 satisfy the relationship: 0.3≤h1 / W1≤0.85.

[0015] In some examples of this utility model, a first transition arc is formed at the connection between the first step wall and the second step wall, the radius of the first transition arc is r1, the thickness of the frame is t1, and r1 and t1 satisfy the relationship: 0.2≤r1 / t1≤10; and / or a second transition arc is formed at the connection between the second step wall and the straight plate segment, the radius of the second transition arc is r2, the thickness of the frame is t1, and r2 and t1 satisfy the relationship: 0.2≤r2 / t1≤10.

[0016] In some examples of this utility model, the width of the second side is W1, and the width of the second step wall is h4. W1 and h4 satisfy the relationship: h4 > W1.

[0017] In some examples of this utility model, the second step wall is provided with an electrode mounting hole and / or a liquid injection hole.

[0018] In some examples of this utility model, the battery frame further includes a third side, the two ends of which are respectively connected to the two first sides along the first direction, and the third side and the second side are arranged opposite to each other in the second direction, so that the first side, the second side and the third side together form a closed frame with openings on both sides.

[0019] In some examples of this utility model, the width of the second side is W1, and the width of the third side is W2. W1 and W2 satisfy the relationship: 1mm≤W1=W2≤3.5mm.

[0020] In some examples of this utility model, the first side, the second side, and the third side are integrally formed.

[0021] The battery casing according to a second aspect of the present invention includes: a frame of the battery as described above, the frame having two openings; a first cover plate connected to one of the openings of the frame; and a second cover plate disposed opposite to the first cover plate and connected to the other opening of the frame.

[0022] In some examples of this utility model, the thickness of the frame is t1, where t1 satisfies the relationship: 0.03mm≤t1≤0.5mm; and / or the thickness of the first cover plate and / or the second cover plate is t2, where t2 satisfies the relationship: 0.03mm≤t2≤0.2mm.

[0023] According to a third aspect of the present invention, a battery includes: a housing of the battery described above; and an electrode core disposed within the housing.

[0024] The battery assembly according to the fourth aspect of this utility model includes: the battery described above.

[0025] The electrical device according to the fifth aspect of this utility model includes: the battery described above or the battery assembly as claimed in the claims.

[0026] The present invention proposes a battery frame that can enhance its structural strength, ensure its straightness, and improve assembly efficiency.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of a battery according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the battery structure according to an embodiment of the present utility model; Figure 3 This is a front view of a battery according to an embodiment of the present utility model; Figure 4 yes Figure 3 Cross-sectional view along the AA direction; Figure 5 This is a partial enlarged view of the stepped portion according to an embodiment of the present utility model; Figure 6 This is a partial structural schematic diagram of a battery according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the shell structure according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the frame structure according to an embodiment of the present utility model; Figure 9 This is a schematic diagram illustrating the manufacturing process of the border according to an embodiment of the present utility model.

[0029] Figure label: 100. Frame; 200. Housing; 201. First cover plate; 202. Second cover plate; 300. Battery; 301. Terminal core; 302. Insulator; 303. Terminal post; 304. Positive electrode tab; 305. Negative electrode tab; 306. Sealing cover; 10. First side; 20. Second side; 30. Third side; 31. Stepped section; 311. First step wall; 312. Second step wall; 3121. Pole mounting hole; 3122. Injection hole; 313. First transition arc; 32. Straight plate section; 321. Second transition arc; 40. First opening; 50. Second opening. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0031] The following is for reference. Figures 1-9 The frame 100 of the battery 300 according to the present invention can enhance its structural strength, ensure its straightness, reduce the number of parts of the housing 200, and improve assembly efficiency.

[0032] Combination Figures 1-9 As shown, the frame 100 of the battery 300 according to the first aspect embodiment of the present invention includes two first side edges 10 and a second side edge 20 disposed opposite to each other along a first direction. The frame 100 is used to form the housing 200 of the battery 300.

[0033] Specifically, the first side 10 extends along a second direction, and the second side 20 extends along a first direction, with an angle between the first and second directions. The two opposite ends of the second side 20 along the first direction are respectively connected to the two first side 10s. The second side 20 is provided with a stepped portion 31, with its two opposite ends along the first direction respectively connected to the two first side 10s. The first side 10 and the second side 20 are integrally formed. For example, the first direction can be the length direction of the battery 300, and the second battery 300 can be the width direction of the battery 300; or the angle between the first and second directions can be a right angle, but this is not limited to these examples.

[0034] Specifically, the two first side edges 10 are arranged opposite each other in the first direction (the width direction of the battery 300 as shown in the figure), and the two ends of the second side edge 20 are respectively connected to the two first side edges 10. This helps to disperse the loads they are subjected to, avoid local stress concentration, and thus effectively improve the structural reliability of the frame 100 and enhance its resistance to deformation.

[0035] In particular, the second side 20 is provided with a stepped portion 31, which allows for the provision of installation space for conductive connectors without processing the cover plate into an irregular structure. This simplifies the processing difficulty of the cover plate, improves the welding consistency between the frame 100 and the cover plate, and reduces the welding process requirements of both. It can also increase the spatial modes of the frame 100, improve the bending and torsional resistance, and effectively ensure the straightness of the first side 10 (long side).

[0036] Furthermore, since the first side 10 and the second side 20 are integrally formed, the number of parts of the frame 100 and the assembly time can be reduced, thereby reducing assembly steps, lowering manufacturing costs, and improving production efficiency; it can also avoid the fitting errors that may occur in traditional multi-part assembly, thereby improving the precision and consistency of the product; it can also reduce stress concentration points (due to the absence of seams and welds), thereby improving the overall structural strength and rigidity of the frame 100, and thus increasing the service life of the frame 100.

[0037] Therefore, by setting the frame 100, the structural strength can be enhanced, the straightness can be guaranteed, and the number of parts in the shell 200 can be reduced, thus improving assembly efficiency.

[0038] According to some optional embodiments of the present invention, combined with Figure 2 , Figure 4 and Figure 5 As shown, the stepped portion 31 includes a first stepped wall 311 and a second stepped wall 312. The second stepped wall 312 is connected to the first stepped wall 311 in the width direction (in this case, the longest side is defined as the length, the shorter side as the width, and the shortest dimension can be defined as the thickness, such as...). Figure 5The distance from the top to the bottom of the first step wall 311 shown is the width of the first step wall 311, and the distance from left to right along the first direction of the second step wall 312 is the width of the second step wall 312. An angle exists between the second step wall 312 and the first step wall 311, and the second step wall 312 extends in the second direction away from the first step wall 311. For example, the first step wall 311 and the second step wall 312 can be perpendicular to each other, or they can form a non-right angle.

[0039] The above arrangement allows the second step wall 312 to change the extension direction of the first step wall 311, which is beneficial to forming a step-shaped step portion 31. Moreover, by utilizing the step portion 31, more components can be stacked in the width direction of the second side 20, thereby improving the spatial layering effect and space utilization.

[0040] Specifically, in combination Figure 4 and Figure 5 As shown, the second side 20 also includes a straight plate segment 32, which is connected to the end of the second step wall 312 away from the first step wall 311. An angle exists between the thickness direction of the straight plate segment 32 and the thickness direction of the second step wall 312. The first step wall 311 and the straight plate segment 32 are located on opposite sides of the thickness direction of the second step wall 312. For example, the straight plate segment 32 and the second step wall 312 can be perpendicular to each other, and a non-right angle can also be formed between the straight plate segment 32 and the second step wall 312.

[0041] Understandably, the straight section 32 continues to change the extension direction of the second step wall 312, which can effectively ensure the structural dimensions of the second side 20 in its own width direction, thereby improving the rationality of the design.

[0042] Furthermore, combined Figure 4 and Figure 5 As shown, the width of the first step wall 311 is h1, the width of the straight plate section 32 is h2, the thickness of the second step wall 312 is h3, and the width of the second side 20 is W1. h1, h2, h3 and W1 satisfy the relationship: W1=h1+h2+h3.

[0043] It is understandable that, along the width direction of the second side 20, the sum of the width of the first step wall 311, the thickness of the second step wall 312, and the width of the straight plate segment 32 is equal to the width of the second side 20. This means that the sum of the width of the first step wall 311, the thickness of the second step wall 312, and the width of the straight plate segment 32 constitutes the width dimension of the first side 10. This avoids the problem of the second side 20 not matching the sum of the width of the first step wall 311, the thickness of the second step wall 312, and the width of the straight plate segment 32, thereby simplifying the processing steps and improving manufacturing efficiency.

[0044] Furthermore, h2 satisfies the relationship: h2 ≥ 0.2 mm. For example, h2 can be 0.2 mm, 0.25 mm, 0.3 mm, and 0.5 mm, and is not limited to these values.

[0045] When the width of the straight plate section 32 is less than 0.2mm, the distance between the second step wall 312 and the cover plate will be too small, resulting in the inability to install corresponding components (such as tabs) in this space. Therefore, the minimum dimension of the width of the straight plate section 32 is limited, which can effectively ensure that there is enough installation space between the second step wall 312 and the cover plate to meet the installation requirements of the corresponding components.

[0046] Specifically, in combination Figure 4 and Figure 5 As shown, h1 and W1 satisfy the relationship: 0.3≤h1 / W1≤0.85.

[0047] Understandably, when h1 / W1 is less than 0.3, the width of the first step wall 311 may be too small given a fixed W1, leading to difficulties in processing the step portion 31. Conversely, when h1 / W1 is greater than 0.85, the width of the first step wall 311 may be too large given a fixed W1, resulting in an insufficient width for the straight plate section 32. This would compromise the space available for the relevant components between the second step wall 312 and the cover plate. Therefore, controlling h1 / W1 within a reasonable range balances the manufacturing efficiency of the frame 100 with the space available for the corresponding components at the step portion 31, thereby improving the layout's rationality. For example, h1 / W1 can be 0.3, 0.5, 0.6, or 0.85, and is not limited to these values.

[0048] Alternatively, combined Figure 4 and Figure 5 As shown, a first transition arc 313 is formed at the connection between the first step wall 311 and the second step wall 312. The radius of the first transition arc 313 is r1, and the thickness of the frame 100 is t1. r1 and t1 satisfy the relationship: 0.2≤r1 / t1≤10. For example, r1 / t1 can be 0.2, 0.8, 1, 3, and 10, and is not limited to these.

[0049] The first transition arc 313 can uniformly connect the first step wall 311 and the second step wall 312, avoiding the formation of stress concentration areas at the connection between the first step wall 311 and the second step wall 312, thereby improving the uniformity of stress on the step part 31, avoiding the risk of deformation or cracking, and thus improving the structural reliability of the step part 31. It is also easy to process and helps to ensure the processing continuity of the frame 100.

[0050] Furthermore, when r1 / t1 is less than 0.2, r1 may be too small for a given t1, which would increase the processing difficulty of the first transition arc 313 and reduce the structural strength enhancement effect. Conversely, when r1 / t1 is greater than 10, r1 may be too large for a given t1, which would reduce the usable space on the surface of the second step wall 312. In summary, controlling r1 / t1 within a reasonable range can balance the processing difficulty of the frame 100, the structural strength, and the space utilization rate at the step 31 as much as possible.

[0051] Alternatively, combine Figure 4 and Figure 5 As shown, a second transition arc 321 is formed at the connection between the second step wall 312 and the straight plate segment 32. The radius of the second transition arc 321 is r2, and the thickness of the frame 100 is t1. r2 and t1 satisfy the relationship: 0.2≤r2 / t1≤10. For example, r2 / t1 can be 0.2, 0.8, 1, 3, and 10, and is not limited to these.

[0052] The second transition arc 321 can uniformly connect the second step wall 312 and the straight plate segment 32, avoiding the formation of stress concentration areas at the connection between the second step wall 312 and the straight plate segment 32, thereby improving the uniformity of stress on the second side 20, avoiding the risk of deformation or cracking, and thus improving the structural reliability of the step part 31. It is also easy to process and helps to ensure the processing continuity of the frame 100.

[0053] Furthermore, when r2 / t1 is less than 0.2, r2 may be too small for a given t1, which would increase the processing difficulty of the second transition arc 321 and reduce the structural strength enhancement effect. Conversely, when r2 / t1 is greater than 10, r2 may be too large for a given t1, which would reduce the usable space on the surface of the second step wall 312. In summary, controlling r2 / t1 within a reasonable range can balance the processing difficulty of the frame 100, the structural strength, and the space utilization rate at the step 31 as much as possible.

[0054] Specifically, in combination Figure 4 and Figure 5As shown, the width of the second side 20 is W1, and the width of the second step wall 312 is h4. W1 and h4 satisfy the relationship: h4 > W1. With the above arrangement, the width of the second step wall 312 is greater than the width of the second side 20, thus ensuring that the step portion 31 has sufficient space for installing related components (such as poles 303 and circuit components).

[0055] Alternatively, combined Figures 1-3 , Figure 7 and Figure 8 As shown, the second step wall 312 is provided with pole mounting holes 3121. Compared with the conventional arrangement of mounting the pole on a larger cover plate, the embodiment in this case can mount the pole 303 at the step portion 31 of the frame 100, thus avoiding the need to process the cover plate into an irregular structure, thereby reducing the processing difficulty of the cover plate.

[0056] Alternatively, combine Figure 8 As shown, the second step wall 312 is provided with an injection hole 3122. This arrangement allows the user to easily inject electrolyte into the battery 300 housing 200 through the injection hole 3122 without opening a hole in the cover plate, thus ensuring the overall structural strength of the cover plate and the electrolyte injection function of the housing 200. In addition, the injection hole 3122 can be sealed with a sealing cap 306 to ensure the sealing effect of the housing 200.

[0057] According to some optional embodiments of the present invention, the frame 100 further includes a third side 30, the two ends of the third side 30 being connected to the two first side 10 respectively along the first direction, and the third side 30 and the second side 20 being arranged opposite to each other in the second direction, so that the first side 10, the second side 20 and the third side 30 together form a closed frame with openings on both sides.

[0058] Specifically, the two first side edges 10 are arranged opposite each other in the first direction (the width direction of the battery 300 as shown in the figure), the two ends of the third side edge 30 are respectively connected to the two first side edges 10, and the two ends of the second side edge 20 are also respectively connected to the two first side edges 10. The third side edge 30 and the second side edge 20 are arranged opposite each other in the second direction (the length direction of the battery 300 as shown in the figure). This allows the two first side edges 10, the third side edge 30 and the second side edge 20 to form a closed force transmission path, which helps to disperse the loads they receive, avoid local stress concentration, and thus effectively improve the structural reliability of the frame 100, enhance its resistance to deformation, and ensure the straightness of the first side edge 10, the third side edge 30 and the second side edge 20.

[0059] Alternatively, along the width direction of the second side 20, a portion of the second side 20 is bent toward the direction close to the third side 30 to form a stepped portion 31, and the two opposite ends of the stepped portion 31 along the first direction are respectively connected to the two first sides 10.

[0060] Alternatively, the third side 30 is welded to the two first sides 10 at opposite ends along the first direction, so that the first side 10, the second side 20 and the third side 30 are connected to form a complete frame 100, and the overall structure of the frame 100 is reliable and stable.

[0061] According to some optional embodiments of the present invention, combined with Figure 4 and Figure 5 As shown, the width of the second side 20 is W1, and the width of the third side 30 is W2. W1 satisfies the relationship: 1mm≤W1=W2≤3.5mm.

[0062] Specifically, the width of the second side 20 and the width of the third side 30 are equal, so that they can be aligned with each other in the width direction of the second side 20, thereby ensuring the consistency of their dimensions and avoiding assembly errors.

[0063] Specifically, when the width of the third side 30 is less than 1mm, it is too small, leading to insufficient structural strength and limited space in the frame 100. Conversely, when the width of the third side 30 is greater than 3.5mm, it is too large, resulting in a thicker frame 100, which hinders the slim design effect. Therefore, controlling the width of the third side 30 within a reasonable range balances structural strength and a slim design. The same principle applies to the second side 20, which has the same width as the third side 30. For example, the widths of the second side 20 and the third side 30 can be 1mm, 2mm, 3mm, and 3.5mm, and are not limited to these.

[0064] Alternatively, the first side 10, the second side 20, and the third side 30 are integrally formed, which can further reduce the number of parts and assembly time of the frame 100, thereby reducing assembly steps, reducing manufacturing costs, and improving production efficiency; it can also avoid the fitting errors that may occur in traditional multi-part assembly, thereby improving the precision and consistency of the product; it can also reduce stress concentration points (due to the absence of seams and welds), thereby improving the overall structural strength and rigidity of the frame 100, and thus improving the service life of the frame 100.

[0065] Combination Figures 1-3 and Figure 6As shown, the housing 200 of the battery 300 according to the second aspect embodiment of the present invention includes the frame 100 of the battery 300 of the above embodiment, the frame 100 having two openings; a first cover plate 201 and a second cover plate 202, the first cover plate 201 being connected to one of the openings of the frame 100, the second cover plate 202 being disposed opposite to the first cover plate 201, and the second cover plate 202 being connected to the other opening of the frame 100.

[0066] The first cover plate 201 and the second cover plate 202 are respectively connected to both sides of the thickness direction of the frame 100, which is conducive to the first cover plate 201, the second cover plate 202 and the frame 100 forming a closed space environment together.

[0067] Furthermore, in this embodiment, the frame 100 is connected to the first cover plate 201 and the second cover plate 202. Since the structure of the connection between the frame 100 and the first cover plate 201 and the second cover plate 202 is regular, the connection process requirements at the connection are low, which helps to ensure the structural consistency of the connection and thus improves the structural strength of the entire housing 200.

[0068] Optionally, the frame 100 has two openings, namely, along the thickness direction of the frame 100, a first opening 40 and a second opening 50 can be formed on both sides of the frame 100 respectively. The cross-sectional area of ​​the first opening 40 is smaller than that of the second opening 50. The frame 100 has a stepped portion 31 on the side near the first opening 40. The first cover plate 201 and the second cover plate 202 are respectively covered on the first opening 40 and the second opening 50 to seal the housing 200.

[0069] Alternatively, the thickness of the border 100 is t1, where t1 satisfies the relationship: 0.03mm≤t1≤0.5mm.

[0070] Specifically, when the thickness of the frame 100 is less than 0.03mm, it is too thin, which will lead to insufficient structural strength of the shell 200 and a risk of deformation. Conversely, when the thickness of the frame 100 is greater than 0.5mm, it is too thick, resulting in increased weight and material consumption. Therefore, controlling the thickness of the frame 100 within a reasonable range can ensure structural strength while reducing material consumption, thus improving its design rationality. For example, the thickness of the frame 100 can be 0.03mm, 0.05mm, 0.1mm, and 0.5mm, and is not limited to these.

[0071] Alternatively, the thickness of the first cover plate 201 is t2, where t2 satisfies the relationship: 0.03mm≤t2≤0.2mm.

[0072] When the thickness of the first cover plate 201 is less than 0.03 mm, it is too thin, which will lead to insufficient structural strength of the shell 200 and a risk of deformation. Conversely, when the thickness of the first cover plate 201 is greater than 0.2 mm, it is too thick, resulting in increased weight and material consumption. Therefore, controlling the thickness of the first cover plate 201 within a reasonable range can ensure its structural strength while reducing material consumption, thus improving its design rationality. For example, the thickness of the first cover plate 201 can be 0.03 mm, 0.05 mm, 0.1 mm, and 0.2 mm, and is not limited to these.

[0073] Alternatively, the thickness of the second cover plate 202 is t2, where t2 satisfies the relationship: 0.03mm≤t2≤0.2mm.

[0074] Specifically, when the thickness of the second cover plate 202 is less than 0.03 mm, it is too thin, which will lead to insufficient structural strength of the shell 200 and a risk of deformation. Conversely, when the thickness of the second cover plate 202 is greater than 0.2 mm, it is too thick, resulting in increased weight and material consumption. Therefore, controlling the thickness of the second cover plate 202 within a reasonable range can ensure its structural strength while reducing material consumption, thus improving its design rationality. For example, the thickness of the second cover plate 202 can be 0.03 mm, 0.05 mm, 0.1 mm, and 0.2 mm, and is not limited to these.

[0075] Alternatively, the thickness of both the first cover plate and the second cover plate is t2, and t2 satisfies the relationship: 0.03mm≤t2≤0.2mm.

[0076] Combination Figures 1-3 and Figure 6 As shown, the battery 300 according to a third aspect embodiment of the present invention includes a housing 200 and an electrode core 301 of the battery 300 described above, with the electrode core 301 disposed within the housing 200. For example, the electrode core 301 may be a wound structure or a stacked structure, and one end of the electrode core 301 may have at least one tab.

[0077] The shell 200 provides structural protection for the electrode core 301. The electrode core 301 can convert electrical energy into chemical energy through a chemical reaction and store it, and then convert it into electrical energy output when needed.

[0078] Alternatively, combined Figures 1-3 and Figure 6As shown, the battery 300 has a terminal assembly, which includes a terminal 303 for connecting the positive electrode tab 304 of the electrode core 301, and the housing 200 for connecting the negative electrode tab 305 of the electrode core 301. The terminal assembly also includes an insulating member 302, which is sleeved on the outer periphery of the terminal 303 to insulate and separate the terminal 303 from the housing 200. The terminal 303 is connected to the positive electrode tab 304, and the stepped portion 31 is connected to the negative electrode tab 305 to realize the conductive connection function inside the battery 300.

[0079] Alternatively, the frame 100 can be integrally formed by a stretching process, which has higher structural strength than a flat structure. The pole post 303 is pressed or riveted at the stepped part 31, which makes it less likely for the shell 200 to deform.

[0080] Furthermore, the second cover plate 202 has an insulating film attached to the side adjacent to the positive electrode tab 304, which can prevent abnormal situations such as short circuits from occurring when the positive electrode tab 304 comes into contact with the housing 200.

[0081] Optionally, the manufacturing method of the housing 200 in this embodiment is described in detail below, including the following steps: S1, The metal sheet is processed by stamping or stretching to form a shell 200 structure with a stepped portion 31; S2, the shell 200 structure is cut by rotary cutting process to remove the excess material at the bottom and top of the shell 200, so that the shell 200 has a first opening 40 and a second opening 50 on both sides, and the area of ​​the first opening 40 is smaller than that of the second opening 50, thus forming a frame 100. S3, the first cover plate 201 and the second cover plate 202 are welded to the first opening 40 and the second opening 50 of the frame 100 respectively, thus forming the shell 200.

[0082] In step S1, the battery 300 in this case is a metal-cased battery 300, and the material of the metal sheet includes, but is not limited to, stainless steel, titanium alloy, nickel alloy, chromium alloy or aluminum alloy.

[0083] like Figure 9 As shown, in step S2, the housing 200 is cut, and the arc transition structure at the bottom and top needs to be cut off so that the connection between the side wall of the frame 100 and the first cover plate 201 and the second cover plate 202 is a right angle structure, so as to maximize the internal space of the housing 200. Relatively speaking, the volume of the electrode core 301 can be increased, thereby improving the energy density of the battery 300.

[0084] In step S3, the assembly of components such as pole core 301 and pole post 303 is also included. The first cover plate 201 and the second cover plate 202 are flat plate structures with regular structure at the connection with the frame 100. The welding process requirements are low, which helps to ensure the consistency of the welded structure strength, the sealing performance of the shell 200 and the structural strength.

[0085] The battery assembly according to the fourth aspect of the present invention includes the battery 300 of the above embodiment, and the battery assembly having the battery 300 can improve its structural reliability and assembly efficiency.

[0086] The electronic device according to the fifth aspect of the present invention includes the battery 300 of the above embodiment. Thus, the electronic device having the battery 300 can increase the structural strength of the housing 200, ensure the straightness of the frame 100, and reduce the number of components assembled in the housing 200, thereby improving structural reliability and assembly efficiency, and thus enhancing the market competitiveness of the electronic device.

[0087] For example, the electrical equipment in this case has a battery compartment 300 inside. The battery 300 in the above embodiment is installed in the battery compartment. The electrical equipment includes, but is not limited to, mobile phones, tablets, wearable devices, etc.

[0088] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0089] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0091] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A frame (100) of a battery (300), characterized in that, include: Two first side edges (10) are arranged opposite each other along a first direction, and the first side edges (10) extend along a second direction; The second side (20) extends along the first direction, and the first direction and the second direction form an angle. The two ends of the second side (20) along the first direction are respectively connected to the two first sides (10). The second side (20) is provided with a step portion (31), and the two ends of the step portion (31) along the first direction are respectively connected to the two first side portions (10), and the first side portions (10) and the second side portions (20) are integrally formed.

2. The frame (100) of the battery (300) according to claim 1, characterized in that, The stepped portion (31) includes: A first step wall (311) and a second step wall (312), the second step wall (312) being connected to one end of the first step wall (311) in the width direction, the second step wall (312) having an angle with the thickness direction of the first step wall (311), and the second step wall (312) extending in the second direction toward the side away from the first step wall (311).

3. The frame (100) of the battery (300) according to claim 2, characterized in that, The second side (20) also includes: A straight plate segment (32) is connected to the end of the second step wall (312) away from the first step wall (311). There is an angle between the thickness direction of the straight plate segment (32) and the thickness direction of the second step wall (312). The first step wall (311) and the straight plate segment (32) are located on both sides of the thickness direction of the second step wall (312).

4. The frame (100) of the battery (300) according to claim 3, characterized in that, The width of the first step wall (311) is h1, the width of the straight plate section (32) is h2, the thickness of the second step wall (312) is h3, and the width of the second side (20) is W1. h1, h2, h3 and W1 satisfy the relationship: W1=h1+h2+h3.

5. The frame (100) of the battery (300) according to claim 4, characterized in that, h2 satisfies the relationship: h2≥0.2mm.

6. The frame (100) of the battery (300) according to claim 4, characterized in that, h1 and W1 satisfy the relationship: 0.3≤h1 / W1≤0.

85.

7. The frame (100) of the battery (300) according to claim 3, characterized in that, A first transition arc (313) is formed at the connection between the first step wall (311) and the second step wall (312). The radius of the first transition arc (313) is r1, and the thickness of the frame (100) is t1. r1 and t1 satisfy the relationship: 0.2≤r1 / t1≤10; and / or A second transition arc (321) is formed at the connection between the second step wall (312) and the straight plate segment (32). The radius of the second transition arc (321) is r2, and the thickness of the frame (100) is t1. r2 and t1 satisfy the relationship: 0.2≤r2 / t1≤10.

8. The frame (100) of the battery (300) according to claim 2, characterized in that, The width of the second side (20) is W1, and the width of the second step wall (312) is h4. W1 and h4 satisfy the relationship: h4 > W1.

9. The frame (100) of the battery (300) according to claim 2, characterized in that, The second step wall (312) is provided with an electrode mounting hole (3121) and / or a liquid injection hole (3122).

10. The frame (100) of the battery (300) according to any one of claims 1-9, characterized in that, Also includes: The third side (30) is connected to the two first sides (10) at its two opposite ends along the first direction. The third side (30) and the second side (20) are arranged opposite to each other in the second direction so that the first side (10), the second side (20) and the third side (30) together form a closed frame with openings on both sides.

11. The frame (100) of the battery (300) according to claim 10, characterized in that, The width of the second side (20) is W1, and the width of the third side (30) is W2. W1 and W2 satisfy the relationship: 1mm≤W1=W2≤3.5mm.

12. The frame (100) of the battery (300) according to claim 10, characterized in that, The first side (10), the second side (20) and the third side (30) are integrally formed.

13. A casing (200) for a battery (300), characterized in that, include: The frame (100) of the battery (300) according to any one of claims 1-12, the frame (100) having two openings; A first cover plate (201) is connected to one of the openings of the frame (100); The second cover plate (202) is disposed opposite to the first cover plate (201) and connected to another opening of the frame (100).

14. The casing (200) of the battery (300) according to claim 13, characterized in that, The thickness of the frame (100) is t1, where t1 satisfies the following relationship: 0.03mm ≤ t1 ≤ 0.5mm; and / or The thickness of the first cover plate and / or the second cover plate is t2, and t2 satisfies the relationship: 0.03mm≤t2≤0.2mm.

15. A battery (300), characterized in that, include: The casing (200) of the battery (300) according to any one of claims 13-14; The electrode core (301) is disposed within the housing (200).

16. A battery assembly, characterized in that, include: The battery (300) according to claim 15.

17. An electrical appliance, characterized in that, include: The battery (300) of claim 15 or the battery assembly of claim 16.

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