Tab adhesive tape, power battery, battery pack and vehicle

Abstract

The utility model provides a tab adhesive tape, a power battery, a battery pack and a vehicle, the tab adhesive tape is used for protecting tabs, the tab adhesive tape comprises at least two bonding sections and at least one blank section, and the at least one blank section is connected between the at least two bonding sections; wherein the bonding structure of the tab adhesive tape is arranged on the bonding section. In the embodiment of the utility model, as the two ends of the tab are respectively connected to the core package and the connecting piece, only the middle part of the tab is easy to vibrate generally, and the outermost metal positioned in the middle part of the tab is not fixed by the tab adhesive tape by controlling the non-viscous blank section to be overlapped with the middle part of the tab, so that a larger activity space is provided; when an external force acts on the tab, the inner layer of the tab vibrates and pulls the outermost layer of the tab, and the outermost layer of the tab has a certain activity space, so that the outermost layer vibrates to counteract the pulling force, the probability that the outermost layer of the tab is torn is reduced, and the safety performance of the battery is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an electrode tab tape, a power battery, a battery pack, and a vehicle. Background Technology

[0002] With the development of the times, the lithium-ion battery market is becoming increasingly large and continues to grow. Especially in the fields of electronic products and electric vehicles, lithium-ion batteries can provide stable and long-lasting energy for electrical devices to meet users' requirements for range.

[0003] In related technologies, battery cells typically have tabs that connect to connecting tabs, which in turn connect to external terminals for power output. These tabs are multi-layered, with the outermost layer covered and secured by tab tape. However, during battery use, vibrations caused by external forces can lead to the inner layers of the tabs vibrating and tearing the outermost layer. This not only affects the tabs' current carrying capacity but may also cause metal shavings to detach from the tabs and fall into the battery cell, posing a significant safety hazard. Utility Model Content

[0004] The present invention provides an electrode tab tape, which can improve the technical problem in the related art that the outer electrode tab that is adhered by the electrode tab tape is easily torn.

[0005] In a first aspect, an embodiment of the present invention provides an electrode tab tape for protecting electrode tabs, the electrode tab tape comprising at least two adhesive segments and at least one blank segment, wherein at least one blank segment is connected between at least two adhesive segments;

[0006] The adhesive structure of the tab tape is located in the adhesive section.

[0007] In some embodiments, the adhesive segment includes:

[0008] First-level grassroots;

[0009] An adhesive layer is disposed on one side of the first base layer to form a portion of the adhesive structure; and,

[0010] The second insulating layer is disposed on the other side of the first base layer.

[0011] In some embodiments, the thickness of the first base layer is d1, where 10 μm ≤ d1 ≤ 30 μm; and / or,

[0012] The thickness of the second insulating layer is d2, 10μm≤d2≤30μm; and / or,

[0013] The thickness of the adhesive layer is d3, 10μm≤d3≤30μm; and / or,

[0014] The thickness of the adhesive segment is D1, where 10μm≤D1≤60μm.

[0015] In some embodiments, the blank segment includes:

[0016] The second base layer and, the second base layer is connected to the first base layer; and,

[0017] A second insulating layer is connected to the first insulating layer.

[0018] In some embodiments, the blank segment includes a composite material layer connected between two adjacent adhesive segments, wherein...

[0019] At least one of the first base layer, the adhesive layer, and the first insulating layer of the adhesive segment is connected to the corresponding composite material layer.

[0020] In some embodiments, there are multiple blank segments and multiple adhesive segments, and the multiple adhesive segments and multiple blank segments are alternately connected.

[0021] In some embodiments, along the length of the tab, the size of the tab tape is larger than the size of the tab protruding from the core package.

[0022] In some embodiments, each side of the blank segment is connected to the adjacent adhesive segment in the width direction, and the total width of the blank segment is L, where 20mm≤L≤40mm.

[0023] In some embodiments, the thickness of the adhesive segment is D1, and the thickness of the composite material layer is D2, where D2 ≤ D1.

[0024] Secondly, embodiments of this utility model provide a power battery, comprising:

[0025] case;

[0026] A core package, wherein the core package is disposed within the housing, and the core package includes a core package body and a tab protruding from the core package body;

[0027] A top cover, which is connected to the housing to seal the housing;

[0028] A connecting piece, wherein the connecting piece is disposed within the housing and is connected to both the electrode tab and the top cover; and,

[0029] As described in the foregoing embodiments, at least one of the adhesive segments is bonded to the core package body, and at least another adhesive segment is connected to the electrode tab.

[0030] In some embodiments, the tab tape is connected to the core package body and the connecting tab on both sides along the length of the tab, respectively;

[0031] Along the width direction of the tab, the size of the tab is A, and the size of the tab tape is B, where A+5mm≤B≤A+10mm.

[0032] In some embodiments, the tab further includes a suspended section located between the connecting piece and the adjacent core package body, and the blank section is correspondingly provided with the suspended section.

[0033] Thirdly, embodiments of this utility model provide a battery pack, including the power battery as described in the foregoing embodiments.

[0034] Fourthly, embodiments of the present invention provide a vehicle including a power battery or a battery pack as described in the foregoing embodiments.

[0035] The beneficial effects of the embodiments of this utility model are as follows:

[0036] In embodiments of this invention, the tab tape includes at least two adhesive segments and at least one blank segment. Since the two ends of the tab are usually connected to the core package and the connecting piece respectively, the tab is usually only prone to vibration in the middle. Therefore, by adhesively bonding the adhesive segments to the core package and the connecting piece, the tab can be protected. The non-adhesive blank segment overlaps with the middle part of the tab that is prone to vibration, giving the outermost metal layer in the middle of the tab more room to move. When an external force is applied to the tab, the inner layer of the tab vibrates and pulls the outermost layer of the tab. Since the outermost layer of the tab has a certain amount of room to move, the outermost layer will also vibrate to counteract the pulling force, thereby reducing the probability of the outermost layer of the tab being torn and improving the safety performance of the battery. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0038] Figure 1 This is a schematic diagram of the structure of the tab tape provided in an embodiment of this utility model;

[0039] Figure 2 This is a schematic diagram of the structure of the tab tape provided in an embodiment of this utility model;

[0040] Figure 3This is a schematic diagram of the structure of the tab tape provided in an embodiment of this utility model;

[0041] Figure 4 This is a schematic diagram of the structure of the power battery provided in an embodiment of this utility model;

[0042] Figure 5 This is a schematic diagram of the structure of the power battery provided in an embodiment of this utility model.

[0043] The labels in the diagram are as follows:

[0044] 1. Ear tape;

[0045] 11. Adhesive section; 111. First base layer; 112. Adhesive layer; 113. First insulating layer;

[0046] 12. Blank section; 121. Second base layer; 122. Second insulation layer;

[0047] 13. Composite material layer;

[0048] 2. Power battery;

[0049] 21. Shell; 22. Core package; 221. Core package body; 222. Electrode; 2221. Suspended section;

[0050] 23. Top cover; 24. Connecting piece;

[0051] H1, the width direction of the blank segment;

[0052] H2, the length direction of the electrode;

[0053] H3, the width direction of the tab. Detailed Implementation

[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0055] According to a first aspect of the present invention, referring to... Figure 1This utility model embodiment provides an electrode tab tape 1 for protecting electrode tabs 222. The electrode tab tape 1 includes at least two adhesive segments 11 and at least one blank segment 12, with at least one blank segment 12 connected between the at least two adhesive segments 11; wherein, the adhesive structure of the electrode tab tape 1 is disposed on the adhesive segments 11.

[0056] In the related technology, the tab 222 is multi-layered, and the two ends of the tab 222 are respectively connected to the inside of the core package 22 and the connecting piece 24. The adhesive segments 11 of the tab tape 1 are respectively bonded to the positions near the two ends of the tab 222. For example, at least one adhesive segment 11 is bonded to the connection between the tab 222 and the core package 22, and at least one adhesive segment 11 is bonded to the connection between the tab 222 and the connecting piece 24; or at least one adhesive segment 11 is bonded to the core package 22 and at least one adhesive segment 11 is bonded to the tab 222. It is only necessary to control that the tab tape 1 can cover the tab 222 to prevent the tab 222 from short-circuiting with other structures in the cell. At this time, the blank segment 12 corresponds to the part of the tab 222 that is not welded to other structures. This means that even if the power battery 2 vibrates and causes the inner layer of the tab 222 to vibrate, since the top layer of the tab 222 is not completely stuck by the tab tape 1, there is a certain amount of space for movement in the top layer of the tab 222. This allows the top layer of the tab 222 to vibrate synchronously, thereby reducing the probability of the top layer of the tab 222 being torn and improving the safety and stability of the battery.

[0057] In some embodiments, the adhesive structure may be made of at least one of the following materials: polyacrylate, polyurethane, rubber, silicone resin, etc., and the present invention does not limit this.

[0058] In an embodiment of this utility model, the tab tape 1 includes at least two adhesive segments 11 and at least one blank segment 12. Since the two ends of the tab 222 are usually connected to the core package 22 and the connecting piece 24 respectively, the tab 222 is usually only prone to vibration in the middle. Therefore, by adhesively bonding the adhesive segments 11 to the core package 22 and the connecting piece 24, the tab 222 can be protected. The non-adhesive blank segment 12 overlaps with the middle part of the tab 222 that is prone to vibration, so that the outermost metal layer located in the middle of the tab 222 has more room to move. When an external force is applied to the tab 222, the inner layer of the tab 222 vibrates and pulls the outermost layer of the tab 222. Since the outermost layer of the tab 222 has a certain amount of room to move, the outermost layer will also vibrate to counteract the pulling force, thereby reducing the probability of the outermost metal layer being torn and improving the safety performance of the battery.

[0059] In one embodiment, reference is made to Figure 1The bonding section 11 includes: a first base layer 111; an adhesive layer 112 disposed on one side of the first base layer 111 to form a partially bonded structure; and a first insulating layer 113 disposed on the other side of the first base layer 111.

[0060] The first base layer 111 can be made of polyethylene terephthalate (PET), which has excellent mechanical properties, such as high strength and high toughness, and can withstand certain tensile and tearing forces without easily breaking, thus providing good overall strength and stability for the tab tape 1. Furthermore, PET has good chemical corrosion resistance and can resist the erosion of chemicals such as electrolytes to a certain extent. The first base layer 111 can also be made of materials such as polypropylene and polyimide; this embodiment of the invention does not limit the choice of materials.

[0061] After the insulating tape covers the tab 222, the first insulating layer 113 is on the outermost layer, thus preventing the tab 222 from short-circuiting with other structures. Therefore, the first insulating layer 113 can be made of polyethylene, polytetrafluoroethylene, ceramic coating, etc., so that the first insulating layer 113 has good electrical insulation performance and chemical stability, which can effectively prevent short circuits between the tab 222 and other metal parts, and is not easy to react with electrolytes and other chemicals, thereby improving the safety of the battery.

[0062] In one embodiment, reference is made to Figure 1 The thickness of the first base layer 111 is d1, 10μm≤d1≤30μm; and / or,

[0063] The thickness of the first insulating layer 113 is d2, 10μm≤d2≤30μm; and / or,

[0064] The thickness of adhesive layer 112 is d3, 10μm≤d3≤30μm; and / or,

[0065] The thickness of the adhesive segment 11 is D1, where 10μm≤D1≤60μm.

[0066] If the thickness d1 of the first base layer 111 is less than 10μm, the thickness is too small, which can easily lead to a decrease in the tensile strength of the adhesive section 11, making the adhesive section 11 prone to deformation and breakage. If the thickness d1 of the first base layer 111 is greater than 30μm, the thickness is too large, resulting in a large thickness of the entire insulating tape, which will occupy too much space inside the battery cell, affecting the setting of other internal structures of the battery cell, or leading to a decrease in the volumetric energy density of the battery. Therefore, in this embodiment of the utility model, d1 is set within 10μm to 30μm. For example, d1 can be 10μm, 12μm, 14μm, 16μm, 18μm, 20μm, 22μm, 24μm, 26μm, 28μm, or 30μm, so that the adhesive section 11 does not affect other internal structures of the battery cell while reducing the probability of the adhesive section 11 breaking.

[0067] If the thickness d2 of the first insulating layer 113 is less than 10 μm, the thickness is too small, and the first insulating layer 113 is easily scratched by other structures inside the battery cell, resulting in reduced insulation performance and increased risk of short circuit within the battery cell. If the thickness d2 of the first insulating layer 113 is greater than 30 μm, the thickness is too large, the bending performance of the adhesive section 11 is poor, thereby increasing the difficulty of attaching and bonding the adhesive section 11 to other structures. Therefore, in this embodiment of the invention, d2 is set within the range of 10 μm to 30 μm. For example, d2 can be 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, 20 μm, 22 μm, 24 μm, 26 μm, 28 μm, or 30 μm, so that the first insulating layer 113 maintains good bending performance while still possessing a certain structural strength, reducing the probability of the first insulating layer 113 being scratched by other structures.

[0068] If the thickness of the adhesive layer 112, d3, is less than 10 μm, the thickness is too small, resulting in insufficient adhesion and weak bonding between the adhesive segment 11 and other structures. If the thickness of the adhesive layer 112, d3, is greater than 30 μm, the thickness is too large, occupying too much space and causing the adhesive segment 11 to be too thick, thus encroaching on the installation space of other components. Therefore, in this embodiment of the invention, d3 is set within the range of 10 μm to 30 μm. For example, d3 can be 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, 20 μm, 22 μm, 24 μm, 26 μm, 28 μm, or 30 μm, so that the adhesive layer 112 maintains good adhesion performance while reducing the probability of affecting other components.

[0069] If the thickness D1 of the adhesive segment 11 is less than 30 μm, the thickness is too small, and there is not enough space to set the first base layer 111, the first insulating layer 113, and the adhesive layer 112, resulting in poor performance of the adhesive segment 11. If the thickness d3 of the adhesive segment 11 is greater than 60 μm, the thickness is too large, and the adhesive segment 11 occupies too much space, thereby encroaching on the installation space of other components. Therefore, in this embodiment of the utility model, d3 is set within 10 μm to 30 μm. For example, d3 can be 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, 20 μm, 22 μm, 24 μm, 26 μm, 28 μm, or 30 μm, so that the adhesive segment 11 maintains good bonding performance, bending performance, and tensile strength while reducing the probability of affecting other components.

[0070] In one embodiment, reference is made to Figure 1 The blank segment 12 includes: a second base layer 121, which is connected to the first base layer 111; and a second insulating layer 122, which is connected to the first insulating layer 113.

[0071] Understandably, it is possible to control the materials of the first base layer 111 and the second base layer 121 to be the same, and the materials of the first insulating layer 113 and the second insulating layer 122 to be the same, which facilitates the production of the tab tape 1. Alternatively, the materials of the first base layer 111 and the second base layer 121 can be different, and the materials of the first insulating layer 113 and the second insulating layer 122 can be different, and they can be bonded together at high temperature. This allows for the customization of suitable blank sections 12 according to actual needs. For example, if the battery cell is used in a violent environment, the material of the blank section 12 can be set to rubber or plastic with high tensile strength, thereby improving the service life of the tab tape 1.

[0072] In one embodiment, reference is made to Figure 2 and Figure 3 The blank segment 12 includes a composite material layer 13, which is connected between at least two adhesive segments 11, wherein,

[0073] At least one of the first base layer 111, the adhesive layer 112, and the first insulating layer 113 of the adhesive segment 11 is connected to the corresponding composite material layer 13.

[0074] The adhesive section 11 is equipped with an adhesive structure for bonding the tab tape 1 to other structures within the core package 22, thereby protecting the tab 222. Each end of the composite material layer 13 is connected to an adhesive section 11, eliminating the need for adhesive composite material layer 13 to be welded to any part of the tab 222 that is not welded to other structures. This ensures that even if the power battery 2 vibrates, causing the inner layer of the tab 222 to vibrate, the uppermost layer of the tab 222 will contract or expand accordingly due to the available space, reducing the probability of the uppermost layer of the tab 222 being torn and improving the safety and stability of the battery.

[0075] It is understood that the adhesive segment 11 can be a multi-layer structure. In this case, the composite material layer 13 can be connected to one of the layers of the adhesive segment 11, or it can be connected to multiple layers or even each layer of the adhesive segment 11. This embodiment of the present invention does not limit this.

[0076] By using composite material layer 13 as blank section 12, the performance of tab tape 1 can be set as needed. For example, high-temperature resistant composite material, such as polyimide, can be used as blank section 12, so that tab tape 1 can still withstand the high temperature of the battery cell, thus improving the safety of the battery cell. Alternatively, blank section 12 can be made of materials such as high tensile strength carbon fiber or ultra-high molecular weight polyethylene fiber, thereby improving the tensile strength of tab tape 1 and preventing tab tape 1 from being torn.

[0077] In one embodiment, reference is made to Figure 4 and Figure 5 Along the length direction H2 of the tab, the size of the tab tape 1 is larger than the size of the tab 222 exposed from the core package 22.

[0078] For example, there may be two adhesive segments 11, which are located at both ends of the tab tape 1, and the blank segment 12 is located between the two adhesive segments 11. At this time, the overall length of the tab tape 1 is usually slightly greater than the length of the tab 222 extending from the core package 22, so that the tab tape 1 can cover the entire tab 222.

[0079] In one embodiment, there are multiple blank segments 12 and multiple adhesive segments 11, and the multiple adhesive segments 11 and multiple blank segments 12 are alternately connected.

[0080] Multiple adhesive segments 11 and multiple blank segments 12 are alternately arranged so that when the tab tape 1 covers the tab 222, the spaced adhesive segments 11 are also bonded to the middle of the tab 222, thereby improving the stability of the connection between the tab tape 1 and the tab 222.

[0081] In one embodiment, reference is made to Figure 1Each side of the blank segment 12 is connected to the adjacent adhesive segment 11 in the width direction H1. The total width of the blank segment 12 is L, 20mm≤L≤40mm.

[0082] If the total width L of the blank segment 12 is less than 20mm, the coverage area of ​​the blank segment 12 over the middle of the tab 222 is small. When the outermost layer of the tab 222 is pulled by the inner layer, the movement space of the outermost layer of the tab 222 is small, and it is still easy to be torn. If the total width L of the blank segment 12 is greater than 40mm, the blank segment 12 occupies the space of the adhesive segment 11, which may easily lead to insufficient bonding strength between the adhesive segment 11 and the core package 22 or the tab 222, increasing the risk of the tab tape 1 falling off. Therefore, in this embodiment of the utility model, L is set within the range of 20mm to 40mm. For example, L can be 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, or 40mm, so that the blank segment 12 has sufficient length, a large area of ​​the tab 222 is not bonded by the tab tape 1, and the width of the bonding segment 11 is also large, so that the connection between the bonding segment 11 and the core package 22 or the tab 222 is tighter.

[0083] In one embodiment, reference is made to Figure 3 The thickness of the adhesive section 11 is D1, and the thickness of the composite material layer 13 is D2, where D2 ≤ D1.

[0084] The thickness of the composite material layer 13 is controlled to be no greater than the thickness of the adhesive section 11 to prevent the composite material layer 13 from protruding from the insulating tape, thereby affecting the normal use of the tab tape 1, making the adhesive section 11 unable to be bonded inside the battery cell, and reducing the probability of the tab tape 1 damaging the tab 222.

[0085] According to a second aspect of the present invention, a power battery 2 is provided, comprising: a housing 21; a core pack 22 disposed within the housing 21, the core pack 22 including a core pack body 221 and tabs 222 protruding from the core pack body 221; a top cover 23 connected to the housing 21 to seal the housing 21; a connecting piece 24 disposed within the housing 21 and connected to the tabs 222 and the top cover 23 respectively; and the tab tape 1 in the aforementioned embodiment having at least one adhesive segment 11 bonded to the core pack body 221 and at least another adhesive segment 11 connected to the tabs 222.

[0086] Since the power battery 2 includes the aforementioned tab tape 1, it possesses all the beneficial effects of the tab tape 1, which will not be elaborated further in this embodiment. The casing 21 and top cover 23 protect the internal structure of the power battery 2, while the connecting piece 24 enables electrical connection between external electrical appliances and the core pack 22, forming a temperature circuit and facilitating power transmission.

[0087] The core package body 221 may include an electrode and a diaphragm. In order to protect the electrode in the core package body 221, the outermost layer of the electrode is covered with at least one diaphragm. Therefore, the tab tape 1 is attached to the core package body 221, which means that the tab tape 1 is attached to the diaphragm on the outer layer of the core package body 221.

[0088] In one embodiment, reference is made to Figure 4 and Figure 5 The tab tape 1 is connected to the core body 221 and the tab 222 on both sides along the length direction H2 of the tab, respectively; along the width direction H3 of the tab, the size of the tab 222 is A, the size of the tab tape 1 is B, and A+5mm≤B≤A+10mm.

[0089] If the size of the tab tape 1 is too small, when the tab 222 and the tab tape 1 are misaligned, the tab tape 1 cannot completely cover the tab 222, making the tab 222 susceptible to corrosion by the electrolyte, and even causing an internal short circuit. If the size of the tab tape 1 is too large, the excess tab tape 1 is likely to stick to the top cover 23, causing blockage of the injection hole on the top cover 23, affecting the subsequent injection process. Therefore, in this embodiment of the present invention, the size B of the tab tape 1 is set between A+5mm and A+10mm, for example, it can be A+5mm, A+6mm, A+7mm, A+8mm, A+9mm, or A+10mm, so that the tab tape 1 can sufficiently cover the tab 222 while reducing the probability of the tab tape 1 blocking the injection hole.

[0090] In one embodiment, reference is made to Figure 4 The tab 222 also includes a suspended section 2221, which is located between the connecting piece 24 and the adjacent core package body 221. The blank section 12 is correspondingly set with the suspended section 2221.

[0091] The suspended section 2221 of the tab 222 is the part of the tab 222 that is not directly connected to the connecting piece 24 and the core package body 221. The outermost layer of the tab 222 located in the suspended section 2221 is the part of the tab 222 that is easily torn. Therefore, by controlling the blank section 12 to correspond completely with the suspended section 2221, the activity space of the outermost layer of the tab 222 is maximized, thereby further reducing the probability of the outermost layer of the tab 222 being torn.

[0092] According to a third aspect of this utility model, a battery pack is provided, including the power battery 2 in the foregoing embodiments. Since the battery pack includes the aforementioned power battery 2, it possesses all the beneficial effects of the aforementioned power battery 2; further details of the embodiments of this utility model will not be repeated here.

[0093] According to a fourth aspect of this utility model, a vehicle is provided, which includes the power battery 2 or battery pack in the foregoing embodiments. Therefore, the vehicle has all the beneficial effects of the aforementioned power battery 2 or battery pack, and the embodiments of this utility model will not be described again here. The vehicle can be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not specifically limit it.

[0094] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A tab tape, characterized by The tab tape for protecting the tab includes at least two adhesive segments and at least one blank segment, and at least one blank segment is connected between at least two adhesive segments. The adhesive structure of the tab tape is arranged in the adhesive segment.

2. The tab tape of claim 1, wherein The adhesive segment includes: a first base layer; an adhesive layer arranged on one side of the first base layer to form part of the adhesive structure; and a first insulating layer arranged on the other side of the first base layer.

3. The tab tape of claim 2, wherein The thickness of the first base layer is d1, 10 μm≤d1≤30 μm; and / or, The thickness of the first insulating layer is d2, 10 μm≤d2≤30 μm; and / or, The thickness of the adhesive layer is d3, 10 μm≤d3≤30 μm; and / or, The thickness of the adhesive segment is D1, 10 μm≤D1≤60 μm.

4. The tab tape of claim 2, wherein The blank segment includes: a second base layer connected with the first base layer; and a second insulating layer connected with the first insulating layer.

5. The tab tape of claim 2, wherein The blank segment includes a composite layer connected between two adjacent adhesive segments, wherein At least one of the first base layer, the adhesive layer and the first insulating layer of the adhesive segment is connected with the corresponding composite layer.

6. The tab tape of claim 1, wherein The blank segment and the adhesive segment are both multiple, and the multiple adhesive segments and the multiple blank segments are connected alternately.

7. The tab tape of claim 1, wherein The size of the tab tape is greater than the size of the tab exposed core package along the length direction of the tab.

8. The tab tape according to any one of claims 1 to 7, wherein Each side of the blank segment in the width direction is connected with the adjacent adhesive segment, and the total width of the blank segment is L, 20 mm≤L≤40 mm.

9. The tab tape of claim 8, wherein, The blank segment includes a composite layer connected between two adjacent adhesive segments; the thickness of the adhesive segment is D1, and the thickness of the composite layer is D2, D2≤D1.

10. A power cell, characterized by It includes: a shell; a core package arranged in the shell, the core package including a core package body and a tab protruding from the core package body; a top cover connected with the shell to close the shell; a connecting piece arranged in the shell, and the connecting piece is respectively connected with the tab and the top cover; and The tab tape according to any one of claims 1 to 9, at least one adhesive segment is adhered to the core package body, and at least another adhesive segment is connected with the tab.

11. The power cell of claim 10, wherein, The two sides of the tab tape along the length direction of the tab are respectively connected with the core package body and the tab; Along the width direction of the tab, the size of the tab is A, and the size of the tab tape is B, A+5 mm≤B≤A+10 mm.

12. The power cell of claim 11, wherein, The tab further includes a suspended segment between the connecting piece and the adjacent core package body, and the blank segment is arranged correspondingly with the suspended segment.

13. A battery pack, characterized by It includes the power battery according to any one of claims 10 to 12.

14. A vehicle characterized by comprising: It includes the power battery according to any one of claims 10 to 12 or the battery pack according to claim 13.

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