Fuse and battery cell

Abstract

The utility model discloses a fuse and a battery cell, and belongs to the technical field of battery cells. The fuse comprises a fuse link, the length direction of the fuse link is a first direction, and the fuse link is provided with a first end and a second end which are oppositely arranged along the first direction; the first connecting assembly and the fuse link are sequentially arranged along the first direction, and the first connecting assembly is connected to the first end; the second connecting assembly is overlapped with the first connecting assembly and the fuse link which are arranged in sequence, one end of the second connecting assembly is connected to the second end in the first direction, the other end of the second connecting assembly is exposed out of the first connecting assembly and the fuse link in the second direction, and the second connecting assembly is arranged between the first connecting assembly and the fuse link. The second direction intersects with the first direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric core, concretely relates to a fuse and electric core. BACKGROUND

[0002] The fuse is connected between the electric core and the circuit board to protect the circuit from overcurrent. In the prior art, the electric core includes a first tab and a second tab, the first tab and the second tab are arranged at intervals, and the fuse is arranged between the first tab and the second tab, with one end of the fuse connected to the first tab and the other end connected to the circuit board.

[0003] However, in the prior art, the fuse is arranged in such a way that when the size of the electric core is small, the distance between the first tab and the second tab is also small, which is not conducive to the arrangement of the fuse. SUMMARY

[0004] The utility model discloses a kind of fuses and electric cores, to solve or at least partially solve the problem that there is in prior art, when the size of the electric core is small, the distance between the first tab and the second tab is also small, which is not conducive to the arrangement of the fuse.

[0005] To solve the above technical problem, the utility model is realized as follows:

[0006] In a first aspect, the utility model discloses a fuse, which includes a fuse body, the length direction of the fuse body is a first direction, along the first direction, the fuse body has oppositely arranged first and second ends;First connection component, along the first direction, the first connection component and the fuse body are sequentially arranged, and the first connection component is connected to the first end;Second connection component, the second connection component is superimposed with the first connection component and the fuse body sequentially arranged, along the first direction, one end of the second connection component is connected to the second end, and the other end of the second connection component is exposed to the first connection component and the fuse body along a second direction, wherein the second direction intersects the first direction.

[0007] Optionally, the fuse body, the first connection component and the second connection component form an F-shaped structure.

[0008] Optionally, the first connection component includes a first connecting piece, along the first direction, the first connecting piece and the fuse body are sequentially arranged, and the first connecting piece is connected to the first end;Along the second direction, the height of the first connecting piece is greater than the height of the fuse body.

[0009] Optionally, the first connection component further includes a first insulating layer, the first insulating layer covers at least part of the first connecting piece and the fuse body.

[0010] Optionally, the first connecting member comprises one of a nickel sheet and a nickel alloy sheet.

[0011] Optionally, the second connecting assembly comprises a first sub-connecting member and a second sub-connecting member connected to the first sub-connecting member, the first sub-connecting member is stacked with the first connecting assembly and the fuse body in sequence, and the first sub-connecting member is connected to the second end; the second sub-connecting member is exposed to the first connecting assembly and the fuse body in the second direction; and in the second direction, the height of the second sub-connecting member is greater than the height of the first sub-connecting member and the fuse body.

[0012] Optionally, the second connecting assembly further comprises a second insulating layer, the second insulating layer covers the first sub-connecting member and the end of the second sub-connecting member connected to the first sub-connecting member.

[0013] Optionally, the first sub-connecting member and the second sub-connecting member comprise one of a nickel sheet and a nickel alloy sheet.

[0014] In a second aspect, the utility model discloses an electric core, the electric core includes electric core body and the fuse of first aspect, and the fuse is connected to the electric core body.

[0015] Optionally, the electric core body has a first electrode and a second electrode arranged at intervals, the first connecting assembly is stacked with the first electrode, and the first connecting assembly is at least partially connected to the first electrode; the other end of the second connecting assembly is located between the first electrode and the second electrode.

[0016] The utility model discloses a fuse and electric core, the fuse includes fuse body, the length direction of fuse body is first direction, along first direction, fuse body has relatively arranged first end and second end, first connecting assembly, along first direction, first connecting assembly is arranged with fuse body in sequence, and first connecting assembly is connected to first end, second connecting assembly, second connecting assembly is stacked with first connecting assembly and fuse body in sequence, along first direction, one end of second connecting assembly is connected to second end, and the other end of second connecting assembly is exposed to first connecting assembly and fuse body in second direction, wherein, second direction intersects first direction.

[0017] The utility model discloses a fuse includes fuse body, first connecting assembly and second connecting assembly, along the first direction, first connecting assembly and fuse body set gradually, and first connecting assembly is connected in the first end of fuse body, to through first connecting assembly with the pole lug of the electric core of fuse body is connected. Second connecting assembly and set gradually first connecting assembly and fuse body superpose, and one end of second connecting assembly is connected in the second end of fuse body, and the other end of second connecting assembly is exposed to first connecting assembly and fuse body along the second direction, through the other end of second connecting assembly with the circuit board of fuse body is connected. Through above -mentioned setting, can reduce the length of fuse along the first direction, make the size of fuse smaller. When the size of electric core is smaller, the interval between electric core first pole lug and second pole lug is also smaller, and the fuse part is set between first pole lug and second pole lug to facilitate fuse arrangement. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The preparation process of the fuse is shown in the embodiment of the utility model Figure 1 ;

[0019] Figure 2 The preparation process of the fuse is shown in the embodiment of the utility model Figure 2 ;

[0020] Figure 3 The preparation process of the fuse is shown in the embodiment of the utility model Figure 3 ;

[0021] Figure 4 The preparation process of the fuse is shown in the embodiment of the utility model Figure 4 ;

[0022] Figure 5 The preparation process of the fuse is shown in the embodiment of the utility model Figure 5 ;

[0023] Figure 6 The structure of the fuse is shown in the embodiment of the utility model.

[0024] Reference signs:

[0025] 10: fuse body; 11: first end; 12: second end;

[0026] 20: first connecting assembly; 21: first connecting piece; 22: first insulating layer;

[0027] 30: second connecting assembly; 31: first sub connecting piece; 32: second sub connecting piece; 33: second insulating layer;

[0028] A: first direction; B: second direction. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of the present application.

[0030] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0031] Referring to Figure 1 , a preparation process schematic of the fuse in the embodiment of the present application is shown Figure 1 ; referring to Figure 2 , a preparation process schematic of the fuse in the embodiment of the present application is shown Figure 2 ; referring to Figure 3 , a preparation process schematic of the fuse in the embodiment of the present application is shown Figure 3 ; referring to Figure 4 , a preparation process schematic of the fuse in the embodiment of the present application is shown Figure 4 ; referring to Figure 5 , a preparation process schematic of the fuse in the embodiment of the present application is shown Figure 5 ; referring to Figure 6 , a structure schematic of the fuse in the embodiment of the present application is shown.

[0032] As shown in Figures 1 to 6 , the embodiment of the present application discloses a fuse, which comprises a fuse body 10, the length direction of the fuse body 10 is a first direction A, along the first direction A, the fuse body 10 has a first end 11 and a second end 12 arranged oppositely; a first connecting assembly 20, along the first direction A, the first connecting assembly 20 and the fuse body 10 are arranged in sequence, and the first connecting assembly 20 is connected to the first end 11; a second connecting assembly 30, the second connecting assembly 30 is superposed with the first connecting assembly 20 and the fuse body 10 arranged in sequence, one end of the second connecting assembly 30 is connected to the second end 12 along the first direction A, and the other end of the second connecting assembly 30 is exposed to the first connecting assembly 20 and the fuse body 10 along a second direction B, wherein the second direction B intersects the first direction A.

[0033] The utility model discloses an embodiment of a fuse, which can be connected between the tab of an electric core and a circuit board to protect the circuit. Of course, the above is only one specific application scenario of the fuse, and does not limit the utility model. In actual applications, a technician can also protect any circuit through the fuse as needed.

[0034] As Figures 1 to 6 shown, the utility model discloses an embodiment of a fuse, which includes a fuse body 10, a first connecting assembly 20 and a second connecting assembly 30. The fuse body 10 is the core component of the fuse, and is also called a fuse wire or a current fuse. It mainly plays an overload protection role. When the fuse wire is installed in a circuit and the current abnormally rises to a certain height and heat, the fuse wire will melt itself to cut off the current and protect the safe operation of the circuit.

[0035] The fuse body 10 in the embodiment of the utility model is of a sheet structure, and the length direction of the fuse body 10 is the first direction A. Along the first direction A, the fuse body 10 has a first end 11 and a second end 12 arranged oppositely. The first connecting assembly 20 and the fuse body 10 are sequentially arranged along the first direction A, and the first connecting assembly 20 is connected to the first end 11 of the fuse body 10 to connect the fuse body 10 to the tab of the electric core through the first connecting assembly 20.

[0036] The first direction A is the length direction of the fuse body 10, and the second direction B intersects the first direction A. Exemplarily, the second direction B is perpendicular to the first direction A.

[0037] It should be noted that the first connecting assembly 20 in the embodiment of the utility model has conductivity, and can include a nickel sheet, an aluminum sheet or a copper sheet. In the embodiment of the utility model, the specific material of the first connecting assembly 20 is not limited too much. In actual applications, a technician can select as needed.

[0038] As Figures 1 to 6 shown, the second connecting assembly 30 in the embodiment of the utility model is stacked with the sequentially arranged first connecting assembly 20 and fuse body 10. Along the first direction A, one end of the second connecting assembly 30 is connected to the second end 12, and the other end of the second connecting assembly 30 is exposed to the sequentially arranged first connecting assembly 20 and fuse body 10 along the second direction B, that is, along the second direction B, the other end of the second connecting assembly 30 is not stacked with the first connecting assembly 20 and fuse body 10. Thus, the fuse body 10 can be connected to the circuit board through the other end of the second connecting assembly 30.

[0039] It should be noted that the second connecting assembly 30 in the embodiments of the present application has conductivity, the second connecting assembly 30 can include a nickel sheet, the second connecting assembly 30 can include an aluminum sheet, and the second connecting assembly 30 can also include a copper sheet. In the embodiments of the present application, the specific material of the second connecting assembly 30 is not limited too much. In actual application, a technician can select as required.

[0040] The fuse disclosed in the embodiments of the present application comprises a fuse body 10, a first connecting assembly 20 and a second connecting assembly 30. Along a first direction A, the first connecting assembly 20 and the fuse body 10 are sequentially arranged, and the first connecting assembly 20 is connected to a first end 11 of the fuse body 10, so as to connect the fuse body 10 to the tab of the battery cell through the first connecting assembly 20. The second connecting assembly 30 is stacked with the sequentially arranged first connecting assembly 20 and fuse body 10, and one end of the second connecting assembly 30 is connected to a second end 12 of the fuse body 10, and the other end of the second connecting assembly 30 is exposed to the first connecting assembly 20 and the fuse body 10 along a second direction B, so as to connect the fuse body 10 to the circuit board through the other end of the second connecting assembly 30. Through the above arrangement, the length of the fuse along the first direction A can be reduced, and the size of the fuse is smaller. When the size of the battery cell is smaller, the distance between the first tab and the second tab of the battery cell is also smaller, and the fuse is partially arranged between the first tab and the second tab, so as to facilitate the arrangement of the fuse.

[0041] Optionally, as shown in Figures 1 to 6 The fuse body 10, the first connecting assembly 20 and the second connecting assembly 30 in the embodiments of the present application form an F-shaped structure.

[0042] As shown in Figures 1 to 6 The fuse body 10, the first connecting assembly 20 and the second connecting assembly 30 in the embodiments of the present application form an F-shaped structure. Along the first direction A, the fuse with the F-shaped structure can save the space of one fuse body 10, so as to reduce the installation space of the fuse and facilitate the arrangement of the fuse.

[0043] Generally, the battery cell has a first tab and a second tab arranged in a spaced manner. During the installation of the fuse, the first connecting assembly 20 can be overlapped with the first tab of the battery cell, and at least a part of the first connecting assembly 20 is connected to the first tab of the battery cell to conduct the fuse body 10 and the battery cell. The fuse body 10 is located on the side of the first tab away from the second tab. The second connecting assembly 30 is exposed to the part of the first connecting assembly 20 and the fuse body 10 in the second direction B between the first tab and the second tab, and the fuse body 10 is connected to the circuit board through the part of the second connecting assembly 30 exposed to the first connecting assembly 20 and the fuse body 10 in the second direction B. Thus, it is helpful to reduce the requirement for the width between the first tab and the second tab during the installation of the fuse. When the distance between the first tab and the second tab is small, the fuse is connected between the first tab of the battery cell and the circuit board, so as to facilitate the arrangement of the fuse.

[0044] Optionally, as shown in Figures 1 to 6 The first connecting assembly 20 in the embodiment of the utility model includes a first connecting piece 21. The first connecting piece 21 is arranged in sequence with the fuse body 10 in the first direction A, and the first connecting piece 21 is connected to the first end 11. In the second direction B, the height of the first connecting piece 21 is greater than the height of the fuse body 10.

[0045] As shown in Figures 1 to 6 The first connecting assembly 20 in the embodiment of the utility model includes a first connecting piece 21. The first connecting piece 21 has electrical conductivity. Exemplarily, the first connecting piece 21 can be at least one of a nickel sheet, an aluminum sheet, a copper sheet and a silver sheet. The first connecting piece 21 is arranged in a spaced manner with the fuse body 10 in the first direction A, and the first connecting piece 21 is connected to the first end 11 of the fuse body 10 to connect the fuse body 10 to the first tab of the battery cell through the first connecting piece 21.

[0046] In the embodiment of the utility model, the height of the first connecting piece 21 is set to be greater than the height of the fuse body 10 in the second direction B. During the installation of the fuse, the first connecting piece 21 can be overlapped with the first tab of the battery cell, and the part of the first connecting piece 21 higher than the fuse body 10 in the second direction B can be connected to the first tab of the battery cell to conduct the fuse body 10 and the battery cell.

[0047] It can be understood that the height of the first connecting piece 21 is set to be greater than the height of the fuse body 10 in the second direction B, so as to facilitate the connection of the first connecting piece 21 to the first tab when the first connecting piece 21 is overlapped with the first tab. Further, the overlapping of the first connecting piece 21 and the first tab helps to reduce the requirement for the width between the first tab and the second tab during the installation of the fuse, and facilitates the arrangement of the fuse.

[0048] Optionally, as shown in Figure 5 and Figure 6As shown in the first connecting assembly 20 in the embodiment of the utility model still includes first insulating layer 22, first insulating layer 22 covers at least part of first connecting piece 21 and fuse 10.

[0049] As Figure 5 And Figure 6 As shown in the first insulating layer 22 in the embodiment of the utility model covers part of first connecting piece 21 and part of fuse 10, to block first connecting piece 21 and second connecting assembly 30 by first insulating layer 22, avoid the short circuit phenomenon of fuse.

[0050] It needs to be explained that the first insulating layer 22 in the embodiment of the utility model can be aramid paper, also can be any other material with insulating property.In the embodiment of the utility model, the specific material of first insulating layer 22 is not limited too much.In actual application, the skilled person can choose according to the need.

[0051] Optionally, the first connecting piece 21 in the embodiment of the utility model includes one of nickel sheet, nickel alloy sheet.

[0052] The first connecting piece 21 in the embodiment of the utility model can be nickel sheet, also can be nickel alloy sheet.In actual application, first connecting piece 21 usually adopts nickel sheet or nickel alloy sheet, to connect fuse 10 to the first tab of the battery cell by nickel sheet or nickel alloy sheet.Nickel sheet, nickel alloy sheet has conductivity, and the melting point of nickel is lower, easy to melt, can better protect the circuit.

[0053] Optionally, as Figure 1 And Figure 2 As shown in the embodiment of the utility model, the second connecting assembly 30 includes first sub-connecting piece 31 and second sub-connecting piece 32 connected to first sub-connecting piece 31, first sub-connecting piece 31 is overlapped with first connecting assembly 20 and fuse 10 arranged in sequence, and first sub-connecting piece 31 is connected to second end 12;Second sub-connecting piece 32 is exposed to first connecting assembly 20 and fuse 10 along second direction B;And along second direction B, the height of second sub-connecting piece 32 is greater than the height of first sub-connecting piece 31 and fuse 10.

[0054] As Figure 1 And Figure 2 As shown in the embodiment of the utility model, the second connecting assembly 30 includes first sub-connecting piece 31 and second sub-connecting piece 32 connected to first sub-connecting piece 31. Wherein, first sub-connecting piece 31 is the part of second connecting assembly 30 overlapped with first connecting assembly 20 and fuse 10 arranged in sequence, and second sub-connecting piece 32 is the part of second connecting assembly 30 exposed to first connecting assembly 20 and fuse 10 along second direction B. Through first sub-connecting piece 31 and second sub-connecting piece 32, the second connecting assembly 30 of L-shaped structure is formed.

[0055] The first sub-connection member 31 is stacked with the first connection assembly 20 and the fuse 10 in sequence, and one end of the first sub-connection member 31 is connected to the second end 12 of the fuse 10, and the other end of the first sub-connection member 31 is connected to the second sub-connection member 32 along the first direction A. The second sub-connection member 32 is exposed to the first connection assembly 20 and the fuse 10 along the second direction B, so as to connect the fuse 10 to the circuit board through the second sub-connection member 32.

[0056] In the process of installing the fuse, the second sub-connection member 32 is exposed to the first connection assembly 20 and the fuse 10 along the second direction B, and the second sub-connection member 32 is located between the first and second tabs, so as to connect the fuse 10 to the circuit board through the second sub-connection member 32. Thus, the requirement for the width between the first and second tabs is reduced when the fuse is installed. When the distance between the first and second tabs is small, the fuse is partially connected between the first tab of the battery cell and the circuit board, so as to facilitate the arrangement of the fuse.

[0057] It should be noted that, in the embodiment of the present application, the height of the second sub-connection member 32 along the second direction B is greater than the height of the first sub-connection member 31 and the fuse 10 stacked in sequence. In the process of installing the fuse, the part of the second sub-connection member 32 beyond the first sub-connection member 31 and the fuse 10 along the second direction B can be connected to the circuit board, so as to facilitate the connection of the second sub-connection member 32 to the circuit board.

[0058] Optionally, as shown in Figure 1 and Figure 2 The second connection assembly 30 in the embodiment of the present application further comprises a second insulating layer 33, and the second insulating layer 33 covers the end of the first sub-connection member 31 connected to the second sub-connection member 32.

[0059] As shown in Figure 1 and Figure 2 The second insulating layer 33 in the embodiment of the present application covers the end of the first sub-connection member 31 connected to the second sub-connection member 32, so as to block the second connection assembly 30 and the first connection assembly 20 through the second insulating layer 33, and avoid the short circuit phenomenon of the fuse.

[0060] It should be noted that the second insulating layer 33 in the embodiment of the present application can be aramid paper, or any other material with insulation. In the embodiment of the present application, the specific material of the second insulating layer 33 is not limited too much. In actual application, the technician can choose as needed.

[0061] Optionally, the first sub-connector 31 and the second sub-connector 32 in the embodiment of the utility model for one of nickel sheet, nickel alloy sheet.

[0062] The first sub-connector 31 and the second sub-connector 32 in the embodiment of the utility model can be nickel sheet, or can be nickel alloy sheet.In actual application, the first sub-connector 31 and the second sub-connector 32 usually adopt nickel sheet or nickel alloy sheet, so as to connect the fuse body 10 to the circuit board through the nickel sheet or the nickel alloy sheet.The nickel sheet and the nickel alloy sheet have conductivity, and the melting point of nickel is relatively low, which is easy to melt, and can better protect the circuit.

[0063] It should be noted that, in actual application, the first sub-connector 31 and the second sub-connector 32 are usually of an integral structure.Of course, the first sub-connector 31 can also be welded to the second sub-connector 32.In the embodiment of the utility model, no specific limitation is made to this.In actual application, the technician can set it according to the need.

[0064] The utility model discloses an embodiment of a kind of fuses, the fuse includes fuse body, the length direction of the fuse body is first direction, along the first direction, the fuse body has oppositely arranged first end and second end;First connection component, along the first direction, the first connection component is sequentially arranged with the fuse body, and the first connection component is connected to the first end;Second connection component, the second connection component is overlapped with sequentially arranged first connection component and the fuse body, along the first direction, one end of the second connection component is connected to the second end, the other end of the second connection component is exposed to the first connection component and the fuse body along second direction, wherein, the second direction intersects the first direction.

[0065] The utility model discloses an embodiment of a kind of fuses, the fuse includes fuse body, the length direction of the fuse body is first direction, along the first direction, the fuse body has oppositely arranged first end and second end;First connection component, along the first direction, the first connection component is sequentially arranged with the fuse body, and the first connection component is connected to the first end;Second connection component, the second connection component is overlapped with sequentially arranged first connection component and the fuse body, along the first direction, one end of the second connection component is connected to the second end, the other end of the second connection component is exposed to the first connection component and the fuse body along second direction, wherein, the second direction intersects the first direction.

[0066] The utility model discloses an electric core, electric core includes electric core body and the fuse in above -mentioned embodiment, and the fuse is connected in electric core body.

[0067] It needs to be explained that the fuse included in the electric core in the utility model embodiment is the same in structure with the fuse in the above-mentioned embodiment, and has similar beneficial effects, which will not be repeated here.

[0068] Optionally, the utility model embodiment discloses the electric core body has the first electrode and the second electrode of interval arrangement, and the first connecting component 20 is superposed with the first electrode, and the first connecting component 20 is connected at least partially in the first electrode, and the other end of the second connecting component 30 is located between the first electrode and the second electrode.

[0069] The utility model embodiment discloses the electric core includes electric core body, and the electric core body has the first electrode and the second electrode of interval arrangement, and the polarity of the first electrode and the second electrode is opposite. The fuse is connected in the first electrode of electric core.

[0070] In the process of installing the fuse, the first connecting component 20 can be superposed with the first electrode, and the first connecting component 20 is connected at least partially in the first electrode, and the fuse body 10 is conducted with the electric core through the first connecting component 20. One end of the second connecting component 30 is connected in the second end 12 of the fuse body 10, and the other end of the second connecting component 30 is located between the first electrode and the second electrode, and the other end of the second connecting component 30 is connected in the circuit board, and the fuse body 10 is conducted with the circuit board through the second connecting component 30.

[0071] When the size of the electric core is small, the spacing between the first tab and the second tab of the electric core is also small. Through the above-mentioned setting, the fuse is partially arranged between the first tab and the second tab, so as to facilitate the arrangement of the fuse.

[0072] It needs to be explained that each embodiment in the specification adopts the progressive mode of description, and each embodiment mainly explains the difference from other embodiments, and the same or similar parts in each embodiment can be referred to each other.

[0073] Although the optional embodiments of the utility model embodiment have been described, those skilled in the art can make other changes and modifications to the embodiments once the basic creative concept is known. Therefore, the appended claims are intended to explain the optional embodiments and all changes and modifications falling within the scope of the utility model embodiment.

[0074] Finally, it needs to be pointed out that in this text, relational terms such as first and second are used merely to distinguish one entity from another entity, and do not necessarily require or imply that there is any such actual relationship or order between these entities. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the article or terminal device including the element.

[0075] The above has carried out the detailed introduction to the technical scheme provided by the utility model, the principle and implementation mode of the utility model have been set forth in this text by the specific example, simultaneously, for the general technical personnel of the field, according to the principle and implementation mode of the utility model, there will be the change in the specific implementation mode and application range, on the whole, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A fuse, characterized in that, The application relates to a fuse (10) and a battery cell (1) comprising the fuse (10). The fuse (10) has a length direction as a first direction (A), and has a first end (11) and a second end (12) oppositely arranged along the first direction (A). A first connecting assembly (20) is arranged along the first direction (A) and sequentially arranged with the fuse (10), and the first connecting assembly (20) is connected to the first end (11). A second connecting assembly (30) is arranged with the first connecting assembly (20) and the fuse (10) sequentially arranged, and one end of the second connecting assembly (30) is connected to the second end (12) along the first direction (A), and the other end of the second connecting assembly (30) is exposed to the first connecting assembly (20) and the fuse (10) along a second direction (B). The second direction (B) intersects the first direction (A).

2. The fuse of claim 1, wherein The fuse (10), the first connecting assembly (20) and the second connecting assembly (30) form an F-shaped structure.

3. The fuse of claim 1, wherein The first connecting assembly (20) comprises a first connecting piece (21) arranged along the first direction (A) and sequentially arranged with the fuse (10), and the first connecting piece (21) is connected to the first end (11). The height of the first connecting piece (21) along the second direction (B) is greater than the height of the fuse (10).

4. The fuse of claim 3, wherein The first connecting assembly (20) further comprises a first insulating layer (22) covering at least part of the first connecting piece (21) and the fuse (10).

5. The fuse of claim 3, wherein, The first connecting piece (21) comprises one of a nickel sheet and a nickel alloy sheet.

6. The fuse of claim 1, wherein The second connecting assembly (30) comprises a first sub-connecting piece (31) and a second sub-connecting piece (32) connected to the first sub-connecting piece (31). The first sub-connecting piece (31) is arranged with the first connecting assembly (20) and the fuse (10) sequentially arranged, and the first sub-connecting piece (31) is connected to the second end (12). The second sub-connecting piece (32) is exposed to the first connecting assembly (20) and the fuse (10) along the second direction (B). The height of the second sub-connecting piece (32) along the second direction (B) is greater than the height of the first sub-connecting piece (31) and the height of the fuse (10).

7. The fuse of claim 6, wherein The second connecting assembly (30) further comprises a second insulating layer (33) covering the first sub-connecting piece (31) and the end of the second sub-connecting piece (32) connected to the first sub-connecting piece (31).

8. The fuse of claim 6, wherein, The first sub-connecting piece (31) and the second sub-connecting piece (32) comprise one of a nickel sheet and a nickel alloy sheet.

9. An electric cell characterized by The battery cell (1) comprises a battery cell body and the fuse (10) according to any one of claims 1-8, and the fuse (10) is connected to the battery cell body.

10. The electric cell of claim 9, wherein, The battery cell body has a first electrode and a second electrode arranged at intervals, The first connection assembly (20) is superposed with the first electrode, and the first connection assembly (20) is at least partially connected to the first electrode; The other end of the second connection assembly (30) is located between the first electrode and the second electrode.

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