Battery cell and battery pack

Abstract

The application provides a battery monomer and a battery pack, and relates to the technical field of batteries. The battery monomer comprises a shell, a terminal cover connected with the shell, a pole column penetrating through the terminal cover, an electrode assembly arranged in the shell, an insulating plate arranged in the shell, and a tab support structure arranged in the shell. The insulating plate is located on the side of the terminal cover close to the electrode body, the clamping piece of the tab support structure is connected to the side of the insulating plate close to the electrode body, the clamping piece has a clamping hole penetrating in the first direction, the insulating support piece of the tab support structure penetrates through the clamping hole, and a gap is formed between the insulating support piece and the insulating plate, a part of the tab penetrates through the gap and is connected with the pole column. The battery monomer provided by the application realizes the clamping of the insulating support piece and the clamping piece located on the side of the insulating plate close to the electrode body, which facilitates the assembly of the insulating support piece, reduces the assembly difficulty of the insulating support piece, and thus improves the production efficiency of the battery monomer.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery cell and a battery pack. Background Technology

[0002] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] With the development of battery technology, the safety requirements for battery cells are becoming increasingly stringent. To improve the safety of battery cells, insulating supports are typically installed in them. These supports constrain the tabs of the electrode assembly, thereby reducing the possibility of short circuits caused by the tabs inserting into the electrode body during the assembly process. However, existing battery cells suffer from inconvenient assembly of the insulating supports, which affects the production efficiency of the battery cells. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a battery cell and a battery pack, which aims to solve the technical problem of inconvenient assembly of insulating support components.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a battery cell having a first orientation, the battery cell comprising:

[0007] case;

[0008] End cap, connected to the housing;

[0009] The pole post is inserted into the end cap;

[0010] An electrode assembly is disposed within the housing and includes an electrode body and a tab connected to each other;

[0011] An insulating plate is disposed inside the housing, and the insulating plate is located on the side of the end cap closer to the electrode body;

[0012] An electrode tab support structure is disposed within the housing and includes a snap-fit ​​member and an insulating support member. The snap-fit ​​member is connected to the side of the insulating plate near the electrode body. The snap-fit ​​member has a snap-fit ​​hole extending through the first direction. The insulating support member passes through the snap-fit ​​hole and forms a gap with the insulating plate. A portion of the electrode tab passes through the gap and is connected to the electrode post.

[0013] In one embodiment of the first aspect, the battery cell further has a second direction perpendicular to the first direction, the latching member includes an extension and a latching portion, the extension is connected to the side of the insulating plate near the electrode body, the latching portion is connected to the side of the extension away from the insulating plate, and the latching portion has the latching hole.

[0014] In one embodiment of the first aspect, the snap-fit ​​portion includes a first elastic snap-fit ​​segment and a second elastic snap-fit ​​segment arranged along the second direction, the first elastic snap-fit ​​segment and the second elastic snap-fit ​​segment being respectively connected to the side of the extension away from the insulating plate, and the snap-fit ​​hole being formed between the first elastic snap-fit ​​segment and the second elastic snap-fit ​​segment.

[0015] In one embodiment of the first aspect, there are multiple snap-fit ​​members, which are spaced apart along the first direction, and the insulating support members are respectively inserted through the snap-fit ​​holes of the multiple snap-fit ​​members.

[0016] In one embodiment of the first aspect, the insulating support includes a first support portion and a second support portion spaced apart along the first direction, the first support portion passing through the snap-fit ​​hole of a portion of the snap-fit ​​member, and the second support portion passing through the snap-fit ​​hole of another portion of the snap-fit ​​member.

[0017] In one embodiment of the first aspect, the battery cell further includes a first insulating boss and a plurality of second insulating bosses. The first insulating boss and the second insulating bosses are both connected to the side of the insulating plate near the electrode body. The first insulating boss and the second insulating bosses respectively abut against the electrode body. The plurality of second insulating bosses are spaced apart along the first direction. The first insulating boss is located between two adjacent second insulating bosses along the first direction. The tab support structure is located between the first insulating bosses and the second insulating bosses that are adjacent along the first direction.

[0018] In one embodiment of the first aspect, the battery cell further includes a protective layer that covers the outer periphery of the insulating support and abuts against the tab.

[0019] In one embodiment of the first aspect, the snap-fit ​​element is integrally formed with the insulating plate.

[0020] In one embodiment of the first aspect, the wall of the snap-fit ​​hole is thermally fused to the outer peripheral side of the insulating support.

[0021] Secondly, embodiments of this application provide a battery pack including the battery cells described in any of the embodiments of the first aspect above.

[0022] The beneficial effects of this application are as follows:

[0023] In the battery cell provided in this application, a gap is formed between the insulating support member and the insulating plate of the tab support structure. A portion of the tab passes through the gap and is connected to the electrode post, so that the insulating support member can constrain the tab to reduce the possibility of the tab being inserted into the electrode body. At the same time, the tab support structure also includes a snap-fit ​​member located on the side of the insulating plate near the electrode body. The snap-fit ​​member has a snap-fit ​​hole that extends along a first direction. The insulating support member passes through the snap-fit ​​hole to achieve snap-fit ​​between the insulating support member and the snap-fit ​​member. This facilitates the assembly of the insulating support member, reduces the assembly difficulty of the insulating support member, and thus improves the production efficiency of the battery cell.

[0024] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A three-dimensional structural schematic diagram of a battery cell in one embodiment of this application is shown;

[0027] Figure 2 It shows Figure 1 Decomposition structure diagram Figure 1 ;

[0028] Figure 3 It shows Figure 1 Decomposition structure diagram Figure 2 ;

[0029] Figure 4 This illustration shows a three-dimensional assembly structure diagram of the end cap, electrode tab support structure, insulating component, conductive component, electrode post, and electrode assembly before core assembly in one embodiment of this application.

[0030] Figure 5 This illustration shows a three-dimensional assembly structure diagram of the end cap, electrode tab support structure, insulating component, conductive component, electrode post, and electrode assembly after core assembly in one embodiment of this application.

[0031] Figure 6 It shows Figure 5 A three-dimensional structural diagram showing the hidden electrode assembly and conductive components.

[0032] Figure 7 It shows Figure 6 Enlarged structural diagram of region A in the middle;

[0033] Figure 8 It shows Figure 7 A magnified structural diagram of region B in the middle;

[0034] Figure 9 It shows in Figure 8 A schematic diagram of a structure with an added protective layer on top of the existing structure;

[0035] Figure 10 It shows Figure 5 A schematic diagram of the structure from a perspective, showing the hidden electrode components and conductive parts.

[0036] Figure 11 A three-dimensional assembly structure diagram of the end cap, insulating support, insulating component, conductive component, pole post, and electrode assembly before core assembly is shown in another embodiment of this application;

[0037] Figure 12 It shows Figure 11 A three-dimensional structural diagram showing the hidden electrode assembly and conductive components.

[0038] Figure 13 It shows Figure 11 A schematic diagram of the structure from one perspective, showing the hidden electrode components and conductive parts.

[0039] Explanation of key component symbols:

[0040] 100-Battery cell; 110-Housing; 120-End cap; 130-Terminal post; 140-Electrode assembly; 141-Electrode body; 142-Taper; 150-Insulating component; 151-Insulating plate; 152-Gap; 153-First insulating boss; 154-Second insulating boss; 160-Taper support structure; 161-Snap-fit ​​component; 1611-Extension; 1612-Snap-fit ​​portion; 16121-Snap-fit ​​hole; 16122-First elastic snap-fit ​​section; 16123-Second elastic snap-fit ​​section; 162-Insulating support component; 1621-First support portion; 1622-Second support portion; 170-Protective layer; 180-Conductive component; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0041] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0042] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this application, the terms "first," "second," etc., are used to distinguish different objects and should not be construed as indicating or implying a specific order or hierarchy, or implicitly specifying the number of technical features indicated. Therefore, a feature marked "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0045] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In the description of this application, the term "and / or" indicates that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" relationship.

[0047] In the description of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 80° to 90°, the two directions can be considered perpendicular; if the angle between two directions is 0° to 10°, the two directions can be considered parallel.

[0048] Battery cells are a crucial component of power battery packs, and with the advancement of battery technology, the safety requirements for battery cells are becoming increasingly stringent. To improve battery cell safety, insulating supports are typically incorporated into the cells. These supports constrain the tabs of the electrode assembly, thereby reducing the likelihood of short circuits caused by the tabs interfering with the electrode body during the assembly process. However, existing battery cells suffer from inconvenient assembly of these insulating supports, impacting production efficiency.

[0049] like Figures 1 to 3 As shown, in order to solve the above-mentioned technical problems, embodiments of this application provide a battery cell 100, which relates to the field of battery technology and is mainly used in battery packs for application in electrical devices or energy storage devices. Of course, the battery cell 100 can also be directly applied to electrical devices or energy storage devices without using a battery pack; no specific limitations are made on the application scenarios of the battery cell 100 here.

[0050] For example, electrical devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. Vehicles can be gasoline-powered cars, natural gas-powered cars, and new energy vehicles, with new energy vehicles including pure electric vehicles, hybrid electric vehicles, and range-extended electric vehicles; spacecraft can be airplanes, rockets, space shuttles, drones, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; power tools can be metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers; energy storage devices include energy storage containers and energy storage power stations; no specific restrictions are placed on the types of electrical devices and energy storage devices here.

[0051] Combination Figures 4 to 8 As shown, the battery cell 100 provided in this embodiment has a first direction X and includes: a housing 110, an end cap 120, a terminal post 130, an electrode assembly 140, an insulating component 150, and a tab support structure 160.

[0052] The end cap 120 is connected to the housing 110; the electrode post 130 passes through the end cap 120; the electrode assembly 140 is disposed inside the housing 110 and includes an electrode body 141 and an electrode tab 142 connected to each other; the insulating member 150 includes an insulating plate 151 disposed inside the housing 110, the insulating plate 151 is located on the side of the end cap 120 near the electrode body 141; the electrode tab support structure 160 includes a snap-fit ​​member 161 and an insulating support member 162, the snap-fit ​​member 161 is connected to the side of the insulating plate 151 near the electrode body 141, the snap-fit ​​member 161 has a snap-fit ​​hole 16121 extending along the first direction X, the insulating support member 162 passes through the snap-fit ​​hole 16121 and forms a gap 152 with the insulating plate 151, a part of the electrode tab 142 passes through the gap 152 and is connected to the electrode post 130.

[0053] It should be noted that "a portion of the tab 142 passes through the gap 152 and is connected to the pole post 130" means that the tab 142 is bent and passes through the gap 152, and this portion of the tab 142 passing through the gap 152 is connected to the pole post 130.

[0054] For example, the material of the insulating member 150 and / or the material of the insulating support member 162 may be plastic, carbon fiber, ceramic, glass, silicone, etc., without specific limitations.

[0055] It should be noted that "the snap-fit ​​part 161 has a snap-fit ​​hole 16121 extending along the first direction X" means that the snap-fit ​​hole 16121 extends through the snap-fit ​​part 161 along the first direction X.

[0056] It is understood that in the battery cell 100 provided in this embodiment, a gap 152 is formed between the insulating support member 162 and the insulating plate 151 of the tab support structure 160. A portion of the tab 142 passes through the gap 152 and is connected to the electrode post 130, so that the insulating support member 162 can constrain the tab 142, thereby reducing the possibility of the tab 142 being inserted into the electrode body 141. At the same time, the tab support structure 160 also includes a snap-fit ​​member 161 located on the side of the insulating plate 151 near the electrode body 141. The snap-fit ​​member 161 has a snap-fit ​​hole 16121 extending along the first direction X. The insulating support member 162 passes through the snap-fit ​​hole 16121 to realize the snap-fit ​​between the insulating support member 162 and the snap-fit ​​member 161. This facilitates the assembly of the insulating support member 162, reduces the assembly difficulty of the insulating support member 162, and thus improves the production efficiency of the battery cell 100.

[0057] For example, the electrode post 130 includes a positive electrode post and a negative electrode post, the electrode tab 142 includes a positive electrode tab and a negative electrode tab, and the electrode body 141 includes a positive electrode plate, a negative electrode plate and a separator. The separator is disposed between the positive electrode plate and the negative electrode plate. The positive electrode plate, the negative electrode plate and the separator are wound or stacked to form the electrode body 141. One side of the positive electrode tab is connected to the positive electrode plate, and the side of the positive electrode tab away from the positive electrode plate is connected to the positive electrode post. One side of the negative electrode tab is connected to the negative electrode plate, and the side of the negative electrode tab away from the negative electrode plate is connected to the negative electrode post.

[0058] like Figures 6 to 8 As shown, in one embodiment, the battery cell 100 also has a second direction Y perpendicular to the first direction X. The snap-fit ​​member 161 includes an extension 1611 and a snap-fit ​​portion 1612. The extension 1611 is connected to the side of the insulating plate 151 near the electrode body 141, and the snap-fit ​​portion 1612 is connected to the side of the extension 1611 away from the insulating plate 151. The snap-fit ​​portion 1612 has a snap-fit ​​hole 16121.

[0059] Understandably, the extension 1611 increases the distance between the snap-fit ​​portion 1612 and the insulating plate 151 so as to form a gap 152 between the insulating support 162 and the insulating plate 151 for the tab 142 to pass through.

[0060] Of course, for the above embodiments, a groove can also be provided on the side of the insulating plate 151 near the electrode assembly 140, with the groove being disposed opposite to the insulating support member 162. The opening of the groove can also form a gap 152 between the insulating support member 162 and the insulating plate 151.

[0061] like Figure 7 and Figure 8 As shown, the snap-fit ​​portion 1612 further includes a first elastic snap-fit ​​segment 16122 and a second elastic snap-fit ​​segment 16123 arranged along the second direction Y. The first elastic snap-fit ​​segment 16122 and the second elastic snap-fit ​​segment 16123 are respectively connected to the side of the extension portion 1611 away from the insulating plate 151, and a snap-fit ​​hole 16121 is formed between the first elastic snap-fit ​​segment 16122 and the second elastic snap-fit ​​segment 16123.

[0062] Understandably, since the first elastic snap-fit ​​segment 16122 and the second elastic snap-fit ​​segment 16123 are elastic, when assembling the insulating support 162, the insulating support 162 deforms by squeezing the first elastic snap-fit ​​segment 16122 and the second elastic snap-fit ​​segment 16123, thereby snapping them into the snap-fit ​​hole 16121, thus realizing the snap-fit ​​between the insulating support 162 and the snap-fit ​​member 161.

[0063] like Figure 8 and Figure 10As shown, in one embodiment, there are multiple snap-fit ​​members 161, which are spaced apart along the first direction X, and the insulating support member 162 passes through the snap-fit ​​holes 16121 of the multiple snap-fit ​​members 161 respectively.

[0064] It is understandable that by setting multiple snap-fit ​​pieces 161, which are spaced apart along the first direction X, and the insulating support piece 162 passing through the snap-fit ​​holes 16121 of the multiple snap-fit ​​pieces 161, the insulating support piece 162 can be snapped in multiple positions. This has higher stability and reliability, and the insulating support piece 162 can better constrain the tab 142 to reduce the possibility of it being inserted into the electrode body 141.

[0065] like Figure 9 as well as Figures 11 to 13 As shown, the insulating support 162 further includes a first support portion 1621 and a second support portion 1622 arranged at intervals along the first direction X. The first support portion 1621 passes through the snap-fit ​​hole 16121 of a portion of the snap-fit ​​member 161, and the second support portion 1622 passes through the snap-fit ​​hole 16121 of the other portion of the snap-fit ​​member 161.

[0066] It is understandable that by dividing the insulating support 162 into a first support portion 1621 and a second support portion 1622 arranged at intervals along the first direction X, i.e., by adopting a split design, space can be saved and the weight of the battery cell 100 can be reduced, thereby increasing the energy density of the battery cell 100.

[0067] Of course, in the above embodiments, the insulating support 162 can also be an integral structure, which can increase the contact area between the insulating support 162 and the tab 142 to form a better support effect and more effectively reduce the possibility of the tab 142 being inserted into the electrode body 141.

[0068] like Figure 5 and Figure 6 As shown, in one embodiment, the insulating member 150 further includes a first insulating boss 153 and a plurality of second insulating bosses 154. The first insulating boss 153 and the second insulating bosses 154 are both connected to the side of the insulating plate 151 near the electrode body 141. The first insulating boss 153 and the second insulating bosses 154 respectively abut against the electrode body 141. The plurality of second insulating bosses 154 are spaced apart along the first direction X. The first insulating boss 153 is located between two adjacent second insulating bosses 154 along the first direction X. The tab support structure 160 is located between the adjacent first insulating bosses 153 and second insulating bosses 154 along the first direction X.

[0069] It is understandable that by having the first insulating boss 153 and the second insulating boss 154 respectively abut against the electrode body 141, the stability of the electrode assembly 140 within the housing 110 is increased. By arranging the tab support structure 160 between the first insulating boss 153 and the second insulating boss 154 adjacent along the first direction X, the structure can be made more compact, thereby improving the energy density of the battery cell 100.

[0070] like Figure 3 and Figure 9 As shown, in one embodiment, the battery cell 100 further includes a protective layer 170, which covers the outer periphery of the insulating support 162 and abuts against the tab 142.

[0071] For example, the protective layer 170 can be a layered structure with elastic deformation capabilities, such as a silicone layer, a rubber layer, or a sponge layer, without any specific limitations.

[0072] Understandably, by covering the outer periphery of the insulating support 162 with a protective layer 170, the contact between the protective layer 170 and the tab 142 is elastic, which can reduce the possibility of the insulating support 162 damaging the tab 142.

[0073] In one embodiment, the snap-fit ​​161 is integrally formed with the insulating plate 151, which increases the connection strength between the two, improves reliability, facilitates manufacturing, and reduces assembly steps.

[0074] In one embodiment, the wall of the snap-fit ​​hole 16121 is thermally fused to the outer periphery of the insulating support 162, so that the insulating member 150 and the insulating support 162 are fixedly connected, that is, their relative positions remain unchanged under normal use conditions, that is, they will not easily separate or move relative to each other, which has higher stability and reliability, thereby better constraining the tab 142 to reduce the possibility of it being inserted into the electrode body 141.

[0075] like Figures 1 to 3As shown, in one embodiment, the battery cell 100 has a first direction X, a second direction Y, and a third direction Z that are perpendicular to each other. Multiple electrode assemblies 140 are arranged along the second direction Y. The battery cell 100 also includes a conductive element 180 and an explosion-proof valve. The conductive element 180 is disposed within the housing 110 and is connected to the terminal post 130 and the tab 142 of each electrode assembly 140, respectively, to achieve electrical connection between each electrode assembly 140 and the terminal post 130. The explosion-proof valve is disposed on the housing 110. The end cap 120 is located on one side of the housing 110 along the third direction Z, and the explosion-proof valve is located on the other side of the housing 110 along the third direction Z, so that the explosion-proof valve and the terminal post 130 are far apart, achieving thermoelectric separation. That is, when the explosion-proof valve opens to discharge the high-temperature, high-pressure gas generated by thermal runaway, it will not affect the function of the terminal post 130, thereby improving the safety of the battery cell 100.

[0076] For example, the conductive element 180 can be a conductive sheet, wire, etc., without specific limitations.

[0077] To address the aforementioned technical problems, embodiments of this application also provide a battery pack, including the battery cell 100 from any of the above embodiments.

[0078] It is understood that since the battery pack provided in this embodiment has the battery cell 100 in any of the above embodiments, it has all the beneficial effects of the battery cell 100, which will not be described in detail here.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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 this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A battery cell, characterized by, The battery monomer has a first direction (X), and comprises: a shell (110); an end cover (120) connected with the shell (110); a pole (130) penetrating the end cover (120); an electrode assembly (140) arranged in the shell (110) and comprising an electrode body (141) and a tab (142) connected with each other; an insulation plate (151) arranged in the shell (110), the insulation plate (151) being located on a side of the end cover (120) close to the electrode body (141); a tab support structure (160) arranged in the shell (110) and comprising a clamping piece (161) and an insulation support piece (162), the clamping piece (161) being connected to a side of the insulation plate (151) close to the electrode body (141), the clamping piece (161) having a clamping hole (16121) penetrating in the first direction (X), the insulation support piece (162) penetrating the clamping hole (16121) and forming a gap (152) with the insulation plate (151), a part of the tab (142) penetrating the gap (152) and being connected with the pole (130).

2. The battery cell of claim 1, wherein, The battery monomer also has a second direction (Y) perpendicular to the first direction (X), the clamping piece (161) comprising an extension part (1611) and a clamping part (1612), the extension part (1611) being connected to a side of the insulation plate (151) close to the electrode body (141), the clamping part (1612) being connected to a side of the extension part (1611) away from the insulation plate (151), the clamping part (1612) having the clamping hole (16121).

3. The battery cell of claim 2, wherein, The clamping part (1612) comprises a first elastic clamping segment (16122) and a second elastic clamping segment (16123) arranged in the second direction (Y), the first elastic clamping segment (16122) and the second elastic clamping segment (16123) being respectively connected to a side of the extension part (1611) away from the insulation plate (151), the first elastic clamping segment (16122) and the second elastic clamping segment (16123) forming the clamping hole (16121) therebetween.

4. The battery cell of claim 1, wherein, The number of the clamping pieces (161) is plural, and the plural clamping pieces (161) are arranged at intervals in the first direction (X), the insulation support pieces (162) penetrating the clamping holes (16121) of the plural clamping pieces (161) respectively.

5. The battery cell of claim 4, wherein, The insulation support piece (162) comprises a first support part (1621) and a second support part (1622) arranged at intervals in the first direction (X), the first support part (1621) penetrating the clamping holes (16121) of a part of the clamping pieces (161), and the second support part (1622) penetrating the clamping holes (16121) of another part of the clamping pieces (161).

6. The battery cell according to any one of claims 1 to 5, characterized in that, The battery cell further comprises a first insulation boss (153) and a plurality of second insulation bosses (154), the first insulation boss (153) and the second insulation bosses (154) are connected to one side of the insulation plate (151) close to the electrode body (141), the first insulation boss (153) and the second insulation bosses (154) respectively abut the electrode body (141), the plurality of second insulation bosses (154) are arranged at intervals along the first direction (X), the first insulation boss (153) is located between two adjacent second insulation bosses (154) along the first direction (X), and the tab support structure (160) is located between the first insulation boss (153) and the second insulation boss (154) along the first direction (X).

7. The battery cell according to any one of claims 1 to 5, characterized in that, The battery cell further comprises a protective layer (170), the protective layer (170) covers the outer circumferential side of the insulation support (162) and abuts the tab (142).

8. The battery cell of any one of claims 1 to 5, wherein, The clamping piece (161) is integrally formed with the insulation plate (151).

9. The battery cell of any one of claims 1 to 5, wherein, The hole wall of the clamping hole (16121) is heat-fusedly connected to the outer circumferential side of the insulation support (162).

10. A battery pack, characterized by, The battery cell of any one of claims 1 to 9.

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