Battery and electric device

Abstract

The utility model discloses a battery and a power utilization device, the battery comprises a shell, a battery cell, a first insulating part and a bottom support part, the battery cell is accommodated in the shell; the first insulating part comprises a first insulating sheet, a second insulating sheet and a third insulating sheet; the first insulating sheet comprises a first sub-insulating sheet and a second sub-insulating sheet; the first sub insulating sheet, the second sub insulating sheet and the third insulating sheet are arranged between the end part of the battery cell along the second direction and the shell; a first positioning hole is formed in one of the first sub-insulating sheet, the second sub-insulating sheet and the third insulating sheet along the thickness direction; the bottom support piece is arranged between the end part of the battery cell along the second direction and the shell and is provided with a second positioning hole, the first positioning hole and the second positioning hole are correspondingly arranged, the end part of the battery cell is communicated with the shell through the first positioning hole and the second positioning hole, and at least one of the first positioning hole and the second positioning hole is covered by the adjacent insulating sheet. Therefore, the first insulating sheet of the battery is of a double-layer structure, so that the creepage distance from the internal battery core to the shell can be increased.

Description

Technical Field

[0001] This utility model relates to the field of batteries, specifically to a battery and an electrical device. Background Technology

[0002] Encapsulating the battery cell is an important step in the battery production process. The insulating film wrapped around the battery cell can prevent the cell from being scratched when it is installed in the casing, and also serve as insulation to prevent safety accidents caused by direct contact between the cell and the casing.

[0003] In existing technologies, common battery cell protection structures, i.e., insulating films, generally include bare cell insulating sheets and cell support plates. The bare cell insulating sheets serve as an insulating barrier between the internal battery cell and the large surface of the metal casing, while the cell support plates serve as an insulating barrier between the internal battery cell and the bottom of the metal casing. During battery cell manufacturing, positioning holes are often provided between the bare cell insulating sheets and the cell support plates for positioning purposes. These positioning holes can result in an excessively short creepage distance between the internal battery cell and the metal casing, posing a risk of creepage breakdown. (See details...) Figure 1 .

[0004] Therefore, how to solve the problem of the excessively short creepage distance between the internal battery cell and the metal casing is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a battery that can solve the problem of the short creepage distance between the internal cell and the metal casing.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A battery comprising:

[0008] shell;

[0009] The battery cell is housed within the outer casing;

[0010] The first insulating element includes a first insulating sheet, a second insulating sheet, and a third insulating sheet; the first insulating sheet includes a first sub-insulating sheet and a second sub-insulating sheet, wherein one end of the first sub-insulating sheet and the second sub-insulating sheet are respectively connected to the second insulating sheet, and the other end of each is a free end; wherein the first sub-insulating sheet, the second sub-insulating sheet, and the third insulating sheet are disposed between the end of the battery cell along the second direction and the outer casing; a first positioning hole is formed along the thickness direction in one of the first sub-insulating sheet, the second sub-insulating sheet, and the third insulating sheet;

[0011] A base support is disposed between the end of the battery cell along the second direction and the outer casing. The base support has a second positioning hole. The first positioning hole and the second positioning hole are correspondingly arranged. The end of the battery cell along the second direction communicates with the outer casing through the first positioning hole and the second positioning hole. At least one of the first positioning hole and the second positioning hole is covered by an adjacent insulating sheet.

[0012] Optionally, in the battery described above, along the second direction and from the inside out of the cell, the first sub-insulating sheet, the third insulating sheet, the second sub-insulating sheet, and the base support are stacked in sequence, the second sub-insulating sheet having a first positioning hole corresponding to the second positioning hole, and the first positioning hole being covered by the third insulating sheet adjacent to it.

[0013] Optionally, in the battery described above, along the second direction and from the inside out of the cell, the first sub-insulating sheet, the third insulating sheet, the bottom support, and the second sub-insulating sheet are stacked in sequence. The third insulating sheet has a first positioning hole corresponding to the second positioning hole. The second positioning hole is covered by the second sub-insulating sheet adjacent to it. The first positioning hole is covered by the first sub-insulating sheet adjacent to it.

[0014] Optionally, in the battery described above, along the second direction and from the inside out of the cell, the first sub-insulating sheet, the third insulating sheet, the base support, and the second sub-insulating sheet are stacked in sequence, the second sub-insulating sheet having a first positioning hole corresponding to the second positioning hole, and the second positioning hole being covered by the third insulating sheet adjacent to it.

[0015] Optionally, in the battery described above, along the second direction and from the inside out of the cell, the first sub-insulating sheet, the base support, the third insulating sheet, and the second sub-insulating sheet are stacked in sequence. The third insulating sheet has a first positioning hole corresponding to the second positioning hole. The second positioning hole is covered by the first sub-insulating sheet adjacent to it. The first positioning hole is covered by the second sub-insulating sheet adjacent to it.

[0016] Optionally, in the battery described above, along the second direction and from the inside to the outside of the cell, the first sub-insulating sheet, the base support, the third insulating sheet, and the second sub-insulating sheet are stacked in sequence. The first sub-insulating sheet has a first positioning hole corresponding to the second positioning hole, and the second positioning hole is covered by the third insulating sheet adjacent to it.

[0017] Optionally, in the above-described battery, the dimension of the cell in the thickness direction is L;

[0018] The minimum distance of the first positioning hole from the edge of the insulating sheet along the first direction is greater than L; the first direction is perpendicular to the thickness direction of the battery cell.

[0019] The creepage distance between the end of the battery cell along the second direction and the outer casing is L1, which satisfies: L1 > L.

[0020] Optionally, in the battery described above, the diameter of the first positioning hole is greater than or equal to 1 mm and less than or equal to 6 mm.

[0021] Optionally, in the above-mentioned battery, the thickness of the first sub-insulating sheet is greater than or equal to 0.05 mm and less than or equal to 1 mm;

[0022] And / or, the thickness of the second sub-insulating sheet is greater than or equal to 0.05 mm and less than or equal to 1 mm;

[0023] And / or, the thickness of the second insulating sheet is greater than or equal to 0.05 mm and less than or equal to 1 mm;

[0024] And / or, the thickness of the third insulating sheet is greater than or equal to 0.05 mm and less than or equal to 1 mm;

[0025] And / or, the thickness of the base support is greater than or equal to 0.1 mm and less than or equal to 1 mm.

[0026] An electrical device includes the aforementioned battery.

[0027] As can be seen from the above technical solution, the first insulating sheet of the battery of this utility model has a double-layer structure. Together with the third insulating sheet, the insulating sheet set between the end of the cell along the second direction and the outer shell has a three-layer structure. One layer is provided with a first positioning hole, which cooperates with the second positioning hole of the bottom support for positioning. The three insulating sheets and the bottom support located between the end of the cell along the second direction and the outer shell are stacked in different orders, which can increase the creepage distance from the inner cell to the outer shell. This avoids the problem of breakdown caused by the first positioning hole of the insulating sheet and the second positioning hole of the bottom support making the creepage distance from the outer shell to the inner cell too short. This can improve the insulation of the battery. Attached Figure Description

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

[0029] Figure 1 This is a partial cross-sectional view of the bottom thickness direction of a battery in the prior art;

[0030] Figure 2 A top view of the insulating component provided in an embodiment of this utility model;

[0031] Figure 3 A side view of the insulating component provided in an embodiment of this utility model;

[0032] Figure 4 A partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 1 of this utility model;

[0033] Figure 5 This is a partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 2 of this utility model;

[0034] Figure 6 This is a partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 3 of this utility model;

[0035] Figure 7 This is a partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 4 of this utility model;

[0036] Figure 8 A partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 5 of this utility model;

[0037] Figure 9 This is a partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment Six of this utility model;

[0038] Figure 10 A partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 7 of this utility model;

[0039] Figure 11 A partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 8 of this utility model;

[0040] Figure 12 A partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 9 of this utility model;

[0041] Figure 13 A partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment 10 of this utility model;

[0042] Figure 14 A partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment Eleven of this utility model;

[0043] Figure 15 A partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment Twelve of this utility model;

[0044] Figure 16 This is a partial cross-sectional view of the bottom thickness direction of the battery provided in Embodiment Thirteen of this utility model.

[0045] Wherein:

[0046] 1. Outer shell; 2. Battery cell; 3. First insulating member;

[0047] 31. First insulating sheet; 311. First sub-insulating sheet; 312. Second sub-insulating sheet;

[0048] 32. Second insulating sheet; 33. Third insulating sheet; 34. First positioning hole;

[0049] 4. Bottom support member; 41. Second positioning hole. Specific embodiments

[0050] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0051] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0052] Both the first insulating sheet 31 and the third insulating sheet 33 of the conventional bare battery cell insulating sheet (i.e., the first insulating member 3) are single-layer structural members. The first insulating sheet 31 is connected to the bottom support member 4. The first insulating sheet 31 is provided with a first positioning hole 34, and the bottom support member 4 has a corresponding second positioning hole 41. During the production process of the battery cell 2, positioning is achieved through the first positioning hole 34. After the internal battery cell 2 is encapsulated in the outer shell 1 of the battery cell 2, the effect is as Figure 1 shown. The thickness of the battery cell 2 is L. There is a creepage distance L1 at the bottom of the outer shell 1, the second positioning hole 41, the first positioning hole 34, and the internal battery cell 2. If the thickness of the battery cell 2 is too small (<20 mm), when 0.1L < L1 < L, the creepage distance L1 does not meet the insulation requirements, and there is a risk of creepage breakdown.

[0053] As Figures 2 to 16As shown, this utility model embodiment provides a battery that can solve the problem of excessively short creepage distance between the internal cell 2 and the metal casing 1.

[0054] First, the battery includes a casing 1, a battery cell 2, a first insulating component 3, and a base component 4, wherein the battery cell 2 is housed within the casing 1; the first insulating component 3 includes a first insulating sheet 31, a second insulating sheet 32, and a third insulating sheet 33; the first insulating sheet 31 includes a first sub-insulating sheet 311 and a second sub-insulating sheet 312, wherein one end of the first sub-insulating sheet 311 and the second sub-insulating sheet 312 are respectively connected to the second insulating sheet 32, and the other end is a free end; wherein the first sub-insulating sheet 311, the second insulating sheet 312, and the third insulating sheet 33 are disposed along the second direction of the battery cell 2. Between the end of the battery cell 2 and the outer shell 1; a first positioning hole 34 is provided along the thickness direction in one of the first sub-insulating sheet 311, the second sub-insulating sheet 312 and the third insulating sheet 33; a bottom support 4 is provided between the end of the battery cell 2 along the second direction and the outer shell 1, and a second positioning hole 41 is provided on the bottom support 4. The first positioning hole 34 and the second positioning hole 41 are correspondingly provided. The end of the battery cell 2 along the second direction is connected to the outer shell 1 through the first positioning hole 34 and the second positioning hole 41. At least one of the first positioning hole 34 and the second positioning hole 41 is covered by the adjacent insulating sheet.

[0055] The first insulating member 3 encloses the battery cell 2 located inside the outer casing 1. The second insulating sheet 32 ​​includes a first part, a second part, and a third part. The two ends of the second part along the opening direction of the first insulating member 3 are connected to the first part and the second part, respectively. The second part contacts the surface of the battery cell 2 on one side of the electrode tab. The first part and the third part respectively enclose the two large surfaces of the battery cell 2 along the thickness direction. It should be noted that before the first insulating member 3 is used to enclose the battery cell 2 in battery assembly, it may be in a fully unfolded flat state, or it may be partially bent or protruding, but the surface that mainly contacts the two surfaces of the battery cell 2 is flat, which facilitates the storage and transportation of the first insulating member 3. When the first insulating member 3 is assembled into the battery, it is bent at the corresponding position along the intersection line of two adjacent surfaces of the battery cell 2. The direction perpendicular to the intersection line is the unfolding direction of the first insulating member 3.

[0056] As can be seen, the first insulating sheet 31 of the battery in this embodiment of the present invention has a double-layer structure. In conjunction with the third insulating sheet 33, the insulating sheet disposed between the end of the cell 2 along the second direction and the outer shell 1 has a three-layer structure. One layer is provided with a first positioning hole 34. The first positioning hole 34 cooperates with the second positioning hole 41 of the bottom support 4 for positioning. The three insulating sheets and the bottom support 4 located between the end of the cell 2 along the second direction and the outer shell 1 are stacked in different orders, which can increase the creepage distance from the inner cell 2 to the outer shell 1. This avoids the problem of breakdown caused by the first positioning hole 34 of the insulating sheet and the second positioning hole 41 of the bottom support 4 making the creepage distance from the outer shell 1 to the inner cell 2 too short. This can improve the insulation of the battery.

[0057] In specific implementation, the thickness dimension of cell 2 is L; the minimum distance of the first positioning hole 34 from the edge of its insulating sheet along the first direction is greater than L, that is, the first positioning hole 34 cannot be too close to the two ends of the outer casing 1 along the first direction. When the first positioning hole 34 is close to the two ends of the outer casing 1 along the first direction, its creepage distance is less than L, and the battery is at risk of breakdown; the first direction is perpendicular to the thickness direction of cell 2; the creepage distance between the end of cell 2 along the second direction and the outer casing 1 is L1, satisfying: L1 > L. It should be noted that a detailed diagram of the first direction is shown in [reference needed]. Figure 2 .

[0058] Furthermore, one first positioning hole 34 is provided along the thickness direction of the battery cell 2, and this positioning hole is preferably located in the middle of the thickness direction of the battery cell 2. This facilitates the assembly of the first insulating sheet 31 and the base support 4, and can prevent the first insulating sheet 31 and the base support 4 from being in opposite positions. It can also prevent the creepage distance from not meeting the design requirements. At the same time, two first positioning holes 34 are provided along the first direction (i.e., the length direction of the battery cell 2). This can prevent the creepage distance from being difficult to control due to the presence of too many first positioning holes 34. It can also prevent the base support 4 and the first insulating sheet 31 from being unable to be positioned if there is only one first positioning hole 34, which would prevent them from being aligned and limited within the plane of the base support 4.

[0059] In specific implementation, the diameter of the first positioning hole 34 is greater than or equal to 1 mm and less than or equal to 6 mm. This avoids the positioning hole being too small, which would make it difficult to align the first positioning hole 34 with the second positioning hole 41, while also preventing the positioning hole from being too large, which would affect the structural strength of the insulating sheet with the first positioning hole 34. Specifically, the diameter of the first positioning hole 34 can be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, or 6 mm.

[0060] In specific implementation, the thickness of the first sub-insulating sheet 311 is greater than or equal to 0.05 mm and less than or equal to 1 mm. Specifically, the thickness of the first sub-insulating sheet 311 can be 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, or 1.0 mm; and / or, the thickness of the second sub-insulating sheet 312 is greater than or equal to 0.05 mm and less than or equal to 1 mm. Specifically, the thickness of the first sub-insulating sheet 311 is greater than or equal to 0.05 mm and less than or equal to 1 mm. The thickness of the second insulating sheet 312 can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1.0mm; and / or, the thickness of the second insulating sheet 32 ​​is greater than or equal to 0.05mm and less than or equal to 1mm. Specifically, the thickness of the second insulating sheet 32 ​​can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, or 0.25mm. The thickness of the third insulating sheet 33 is greater than or equal to 0.05 mm and less than or equal to 1 mm. Specifically, the thickness of the third insulating sheet 33 can be 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, or 0.6 mm. The thickness of the base support 4 is 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1.0mm; and / or, the thickness of the base support 4 is greater than or equal to 0.1mm and less than or equal to 1mm. Specifically, the thickness of the base support 4 can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1.0mm.The thickness of the first sub-insulating sheet 311, the second sub-insulating sheet 312, the second insulating sheet 32, the third insulating sheet 33, and the base support 4 are within the above range, which not only avoids the situation that bending is easy if the thickness is too small, but also avoids the situation that the thickness is too large and occupies a lot of battery space, affecting the battery energy density.

[0061] In specific implementation, the first insulating component 3 is fixedly connected to the base support component 4 through the first positioning hole 34. The connection method includes, but is not limited to, hot melting and adhesive. The specific connection method can be designed by those skilled in the art according to actual needs.

[0062] This utility model provides an electrical device, including the battery described above.

[0063] There are no particular limitations on the electrical devices used in this invention, which may include, but are not limited to: laptops, pen-based computers, mobile computers, e-book players, portable telephones, portable fax machines, portable copiers, portable printers, stereo headphones, video recorders, LCD TVs, portable cleaners, portable CD players, mini CDs, transceivers, electronic notebooks, calculators, memory cards, portable recorders, radios, backup power supplies, motors, automobiles, motorcycles, electric bicycles, bicycles, lighting fixtures, toys, game consoles, clocks, power tools, flashlights, cameras, large household batteries, and lithium-ion capacitors, etc.

[0064] Exemplary Example 1

[0065] For specific implementation details, please refer to [link / reference]. Figure 4 Along the second direction and from the inside out of the battery cell 2, the first sub-insulating sheet 311, the third insulating sheet 33, the second sub-insulating sheet 312, and the bottom support 4 are stacked in sequence. The second sub-insulating sheet 312 has a first positioning hole 34 corresponding to the second positioning hole 41, and the first positioning hole 34 is covered by the adjacent third insulating sheet 33. During the process of connecting the first insulating member 3 to the battery cell 2, the first sub-insulating sheet 311 is first folded to contact the bottom of the inner battery cell 2, then the third insulating sheet 33 is folded to fit with the first sub-insulating sheet 311, then the second sub-insulating sheet 312 is folded to fit with the third insulating sheet 33, and finally the bottom support 4 is set on the side of the second sub-insulating sheet 312 away from the battery cell 2. Figure 4 The length of the thick black line segment is the creepage distance L1. L1 is significantly greater than L, which greatly increases the creepage distance from the internal battery cell 2 to the bottom of the outer casing 1.

[0066] Exemplary Example 2

[0067] like Figure 5 As shown, Embodiment 2 of this utility model provides a battery and an electrical device. The difference between Embodiment 2 and Embodiment 1 is that:

[0068] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the first sub-insulating sheet 311, the third insulating sheet 33, the bottom support 4, and the second sub-insulating sheet 312 are stacked in sequence. The third insulating sheet 33 has a first positioning hole 34 corresponding to the second positioning hole 41. The second positioning hole 41 is covered by the adjacent second sub-insulating sheet 312; the first positioning hole 34 is covered by the adjacent first sub-insulating sheet 311. During the process of connecting the first insulating member 3 to the battery cell 2, the first sub-insulating sheet 311 is first folded to contact the bottom of the inner battery cell 2, then the third insulating sheet 33 is folded to fit with the first sub-insulating sheet 311, then the bottom support 4 is set on the side of the third insulating sheet 33 away from the battery cell 2, and finally the second sub-insulating sheet 312 is folded to fit with the bottom support 4. Figure 5 The length of the bold black line segment is the creepage distance L1.

[0069] Exemplary Example 3

[0070] like Figure 6 As shown, Embodiment 3 of this utility model provides a battery and an electrical device. The difference between Embodiment 3 and Embodiment 1 is that:

[0071] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the first sub-insulating sheet 311, the third insulating sheet 33, the bottom support 4, and the second sub-insulating sheet 312 are stacked sequentially. The second sub-insulating sheet 312 has a first positioning hole 34 corresponding to the second positioning hole 41, and the second positioning hole 41 is covered by the adjacent third insulating sheet 33. During the process of connecting the first insulating member 3 to the battery cell 2, the first sub-insulating sheet 311 is first folded to contact the bottom of the inner battery cell 2, then the third insulating sheet 33 is folded to fit against the first sub-insulating sheet 311, then the bottom support 4 is set on the side of the third insulating sheet 33 away from the battery cell 2, and finally the second sub-insulating sheet 312 is folded to fit against the bottom support 4. Figure 6 The length of the thick black line segment is the creepage distance L1. L1 is significantly greater than L, which greatly increases the creepage distance from the internal battery cell 2 to the bottom of the outer casing 1.

[0072] Exemplary Example 4

[0073] like Figure 7 As shown, Embodiment 4 of this utility model provides a battery and an electrical device. The difference between Embodiment 4 and Embodiment 1 is that:

[0074] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the first sub-insulating sheet 311, the bottom support 4, the third insulating sheet 33, and the second sub-insulating sheet 312 are stacked in sequence. The third insulating sheet 33 has a first positioning hole 34 corresponding to the second positioning hole 41. The second positioning hole 41 is covered by the first sub-insulating sheet 311 adjacent to it; the first positioning hole 34 is covered by the second sub-insulating sheet 312 adjacent to it. During the process of connecting the first insulating member 3 to the battery cell 2, the first sub-insulating sheet 311 is first folded to contact the bottom of the inner battery cell 2, and then the bottom support 4 is set on the side of the first sub-insulating sheet 311 away from the battery cell 2. Then the third insulating sheet 33 is folded to fit with the bottom support 4, and finally the second sub-insulating sheet 312 is folded to fit with the third insulating sheet 33. Figure 7 The length of the bold black line segment is the creepage distance L1.

[0075] Exemplary Example 5

[0076] like Figure 8 As shown, Embodiment 5 of this utility model provides a battery and an electrical device. The difference between Embodiment 5 and Embodiment 1 is that:

[0077] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the first sub-insulating sheet 311, the bottom support 4, the third insulating sheet 33, and the second sub-insulating sheet 312 are stacked sequentially. The first sub-insulating sheet 311 has a first positioning hole 34 corresponding to the second positioning hole 41, and the second positioning hole 41 is covered by the adjacent third insulating sheet 33. During the process of connecting the first insulating sheet 3 to the battery cell 2, the first sub-insulating sheet 311 is first folded to contact the bottom of the inner battery cell 2, then the bottom support 4 is set on the side of the first sub-insulating sheet 311 away from the battery cell 2, then the third insulating sheet 33 is folded to fit with the bottom support 4, and finally the second sub-insulating sheet 312 is folded to fit with the third insulating sheet 33. Figure 8 The length of the thick black line segment is the creepage distance L1. L1 is significantly greater than L, which greatly increases the creepage distance from the internal battery cell 2 to the bottom of the outer casing 1.

[0078] Exemplary Example Six

[0079] like Figure 9 As shown, Embodiment Six of this utility model provides a battery and an electrical device. The difference between Embodiment Six and Embodiment One is that:

[0080] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the first sub-insulating sheet 311, the second sub-insulating sheet 312, the bottom support 4, and the third insulating sheet 33 are stacked sequentially. The second sub-insulating sheet 312 has a first positioning hole 34 corresponding to the second positioning hole 41. The first positioning hole 34 is covered by the adjacent first sub-insulating sheet 311, and the second positioning hole 41 is covered by the adjacent third insulating sheet 33. During the process of connecting the first insulating member 3 to the battery cell 2, the first sub-insulating sheet 311 is first folded to contact the bottom of the inner battery cell 2, and then the second sub-insulating sheet 312 is folded to fit against the first sub-insulating sheet 311. Then, the bottom support 4 is set on the side of the second sub-insulating sheet 312 away from the battery cell 2, and finally the third insulating sheet 33 is folded to fit against the bottom support 4. Figure 9 The length of the bold black line segment is the creepage distance L1.

[0081] Exemplary Example 7

[0082] like Figure 10 As shown, Embodiment Seven of this utility model provides a battery and an electrical device. The difference between Embodiment Seven and Embodiment One is that:

[0083] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the first sub-insulating sheet 311, the second sub-insulating sheet 312, the bottom support 4, and the third insulating sheet 33 are stacked sequentially. The third insulating sheet 33 has a first positioning hole 34 corresponding to the second positioning hole 41, and the second positioning hole 41 is covered by the adjacent second sub-insulating sheet 312. During the process of connecting the first insulating member 3 to the battery cell 2, the first sub-insulating sheet 311 is first folded to contact the bottom of the inner battery cell 2, and then the second sub-insulating sheet 312 is folded to fit against the first sub-insulating sheet 311. Then, the bottom support 4 is set on the side of the second sub-insulating sheet 312 away from the battery cell 2, and finally the third insulating sheet 33 is folded to fit against the bottom support 4. Figure 10 The length of the bold black line segment is the creepage distance L1.

[0084] Exemplary Example 8

[0085] like Figure 11 As shown, Embodiment 8 of this utility model provides a battery and an electrical device. The difference between Embodiment 8 and Embodiment 1 is that:

[0086] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the third insulating sheet 33, the first sub-insulating sheet 311, the second sub-insulating sheet 312, and the bottom support 4 are stacked in sequence. The second sub-insulating sheet 312 has a first positioning hole 34 corresponding to the second positioning hole 41, and the second positioning hole 41 is covered by the adjacent first sub-insulating sheet 311. During the process of connecting the first insulating member 3 to the battery cell 2, the third insulating sheet 33 is first folded to contact the bottom of the inner battery cell 2, then the first sub-insulating sheet 311 is folded to fit with the third insulating sheet 33, then the second sub-insulating sheet 312 is folded to fit with the first insulating sheet 311, and finally the bottom support 4 is set on the side of the second sub-insulating sheet 312 away from the battery cell 2. Figure 11 The length of the bold black line segment is the creepage distance L1.

[0087] Exemplary Example 9

[0088] like Figure 12 As shown, Embodiment Nine of this utility model provides a battery and an electrical device. The difference between Embodiment Nine and Embodiment One is that:

[0089] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the third insulating sheet 33, the first sub-insulating sheet 311, the bottom support 4, and the second sub-insulating sheet 312 are stacked in sequence. The first sub-insulating sheet 311 has a first positioning hole 34 corresponding to the second positioning hole 41. The first positioning hole 34 is covered by the adjacent third insulating sheet 33, and the second positioning hole 41 is covered by the adjacent second sub-insulating sheet 312. During the process of connecting the first insulating member 3 to the battery cell 2, the third insulating sheet 33 is first folded to contact the bottom of the inner battery cell 2, and then the first sub-insulating sheet 311 is folded to fit with the third insulating sheet 33. After that, the bottom support 4 is set on the side of the first sub-insulating sheet 311 away from the battery cell 2, and finally the second sub-insulating sheet 312 is folded to fit with the bottom support 4. Figure 12 The length of the bold black line segment is the creepage distance L1.

[0090] Exemplary Example 10

[0091] like Figure 13 As shown, Embodiment 10 of this utility model provides a battery and an electrical device. The difference between Embodiment 10 and Embodiment 1 is that:

[0092] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the third insulating sheet 33, the first sub-insulating sheet 311, the bottom support 4, and the second sub-insulating sheet 312 are stacked sequentially. The second sub-insulating sheet 312 has a first positioning hole 34 corresponding to the second positioning hole 41, and the second positioning hole 41 is covered by the adjacent first sub-insulating sheet 311. During the process of connecting the first insulating member 3 to the battery cell 2, the third insulating sheet 33 is first folded to contact the bottom of the inner battery cell 2, and then the first sub-insulating sheet 311 is folded to fit together with the third insulating sheet 33. After that, the bottom support 4 is set on the side of the first sub-insulating sheet 311 away from the battery cell 2, and finally the second insulating sheet 312 is folded to fit together with the bottom support 4. Figure 13 The length of the bold black line segment is the creepage distance L1.

[0093] Exemplary Example 11

[0094] like Figure 14 As shown, Embodiment Eleven of this utility model provides a battery and an electrical device. The difference between Embodiment Eleven and Embodiment One is that:

[0095] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the third insulating sheet 33, the bottom support 4, the first sub-insulating sheet 311, and the second sub-insulating sheet 312 are stacked in sequence. The first sub-insulating sheet 311 has a first positioning hole 34 corresponding to the second positioning hole 41. The first positioning hole 34 is covered by the adjacent second sub-insulating sheet 312, and the second positioning hole 41 is covered by the adjacent third insulating sheet 33. During the process of connecting the first insulating sheet 3 to the battery cell 2, the third insulating sheet 33 is first folded over to contact the bottom of the inner battery cell 2. Then, the bottom support 4 is set on the side of the third insulating sheet 33 away from the battery cell 2. After that, the first sub-insulating sheet 311 is folded over and attached to the bottom support 4. Finally, the second sub-insulating sheet 312 is folded over and attached to the first sub-insulating sheet 311. Figure 14 The length of the bold black line segment is the creepage distance L1.

[0096] Exemplary Example Twelve

[0097] like Figure 15 As shown, Embodiment Twelve of this utility model provides a battery and an electrical device. The difference between Embodiment Twelve and Embodiment One is that:

[0098] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the bottom support 4, the first sub-insulating sheet 311, the second sub-insulating sheet 312, and the third insulating sheet 33 are stacked in sequence. The first sub-insulating sheet 311 has a first positioning hole 34 corresponding to the second positioning hole 41, and the first positioning hole 34 is covered by the adjacent second sub-insulating sheet 312. During the process of connecting the first insulating member 3 to the battery cell 2, the bottom support 4 contacts the bottom of the inner battery cell 2, then the first sub-insulating sheet 311 is folded over and attached to the bottom support 4, then the second sub-insulating sheet 312 is folded over and attached to the first insulating sheet 311, and finally the third insulating sheet 33 is folded over and attached to the second insulating sheet 312. Figure 15 The length of the bold black line segment is the creepage distance L1.

[0099] Exemplary Example Thirteen

[0100] like Figure 16 As shown, Embodiment Thirteen of this utility model provides a battery and an electrical device. The difference between Embodiment Thirteen and Embodiment One is that:

[0101] In specific implementation, along the second direction and from the inside to the outside of the battery cell 2, the base support 4, the first sub-insulating sheet 311, the third insulating sheet 33, and the second sub-insulating sheet 312 are stacked sequentially. The first sub-insulating sheet 311 has a first positioning hole 34 corresponding to the second positioning hole 41, and the first positioning hole 34 is covered by the adjacent third insulating sheet 33. During the process of connecting the first insulating sheet 3 to the battery cell 2, the base support 4 contacts the bottom of the inner battery cell 2, then the first sub-insulating sheet 311 is folded over and attached to the base support 4, then the third insulating sheet 33 is folded over and attached to the first sub-insulating sheet 311, and finally the second sub-insulating sheet 312 is folded over and attached to the third insulating sheet 33. Figure 16 The length of the bold black line segment is the creepage distance L1.

[0102] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0103] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0104] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery, characterized in that, include: Outer shell (1); The battery cell (2) is housed within the outer casing (1); The first insulating element (3) includes a first insulating sheet (31), a second insulating sheet (32), and a third insulating sheet (33); the first insulating sheet (31) includes a first sub-insulating sheet (311) and a second sub-insulating sheet (312), wherein one end of the first sub-insulating sheet (311) and the second sub-insulating sheet (312) are respectively connected to the second insulating sheet (32), and the other end is a free end; wherein the first sub-insulating sheet (311), the second sub-insulating sheet (312), and the third insulating sheet (33) are disposed between the end of the battery cell (2) along the second direction and the outer shell (1); a first positioning hole (34) is provided in one of the first sub-insulating sheet (311), the second sub-insulating sheet (312), and the third insulating sheet (33) along its thickness direction; A base support (4) is disposed between the end of the battery cell (2) along the second direction and the outer casing (1). The base support (4) has a second positioning hole (41). The first positioning hole (34) and the second positioning hole (41) are correspondingly arranged. The end of the battery cell (2) along the second direction is connected to the outer casing (1) through the first positioning hole (34) and the second positioning hole (41). At least one of the first positioning hole (34) and the second positioning hole (41) is covered by an insulating sheet adjacent to it.

2. The battery according to claim 1, characterized in that, Along the second direction and from the inside to the outside of the battery cell (2), the first sub-insulating sheet (311), the third insulating sheet (33), the second sub-insulating sheet (312), and the bottom support (4) are stacked in sequence. The second sub-insulating sheet (312) has a first positioning hole (34) corresponding to the second positioning hole (41). The first positioning hole (34) is covered by the third insulating sheet (33) adjacent to it.

3. The battery according to claim 1, characterized in that, Along the second direction and from the inside to the outside of the battery cell (2), the first sub-insulating sheet (311), the third insulating sheet (33), the bottom support (4), and the second sub-insulating sheet (312) are stacked in sequence. The third insulating sheet (33) has a first positioning hole (34) corresponding to the second positioning hole (41). The second positioning hole (41) is covered by the second sub-insulating sheet (312) adjacent to it. The first positioning hole (34) is covered by the first sub-insulating sheet (311) adjacent to it.

4. The battery according to claim 1, characterized in that, Along the second direction and from the inside to the outside of the battery cell (2), the first sub-insulating sheet (311), the third insulating sheet (33), the bottom support (4), and the second sub-insulating sheet (312) are stacked in sequence. The second sub-insulating sheet (312) has a first positioning hole (34) corresponding to the second positioning hole (41). The second positioning hole (41) is covered by the third insulating sheet (33) adjacent to it.

5. The battery according to claim 1, characterized in that, Along the second direction and from the inside to the outside of the battery cell (2), the first sub-insulating sheet (311), the bottom support (4), the third insulating sheet (33), and the second sub-insulating sheet (312) are stacked in sequence. The third insulating sheet (33) has a first positioning hole (34) corresponding to the second positioning hole (41). The second positioning hole (41) is covered by the first sub-insulating sheet (311) adjacent to it. The first positioning hole (34) is covered by the second sub-insulating sheet (312) adjacent to it.

6. The battery according to claim 1, characterized in that, Along the second direction and from the inside to the outside of the battery cell (2), the first sub-insulating sheet (311), the bottom support (4), the third insulating sheet (33), and the second sub-insulating sheet (312) are stacked in sequence. The first sub-insulating sheet (311) has a first positioning hole (34) corresponding to the second positioning hole (41), and the second positioning hole (41) is covered by the third insulating sheet (33) adjacent to it.

7. The battery according to claim 1, characterized in that, The thickness dimension of the battery cell (2) is L; The minimum distance of the first positioning hole (34) from the edge of the insulating sheet along the first direction is greater than L; the first direction is perpendicular to the thickness direction of the battery cell (2); The creepage distance between the end of the battery cell (2) along the second direction and the outer casing (1) is L1, which satisfies: L1 > L.

8. The battery according to claim 1, characterized in that, The diameter of the first positioning hole (34) is greater than or equal to 1 mm and less than or equal to 6 mm.

9. The battery according to claim 1, characterized in that, The thickness of the first sub-insulating sheet (311) is greater than or equal to 0.05 mm and less than or equal to 1 mm; And / or, the thickness of the second sub-insulating sheet (312) is greater than or equal to 0.05 mm and less than or equal to 1 mm; And / or, the thickness of the second insulating sheet (32) is greater than or equal to 0.05 mm and less than or equal to 1 mm; And / or, the thickness of the third insulating sheet (33) is greater than or equal to 0.05 mm and less than or equal to 1 mm; And / or, the thickness of the base support (4) is greater than or equal to 0.1 mm and less than or equal to 1 mm.

10. An electrical device, characterized in that, Includes the battery described in any one of claims 1-9.

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