Protective structure, battery cell and battery
By filling the dissolvable layer in the exhaust tank of the battery protective structure, the problem of the exhaust tank deformation when the protective structure is installed is solved, and better exhaust effect and battery cell stability are achieved, preventing battery cell bulge and protective structure. Leave.
Patent Information
- Application Number
- CN202420660309.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-01
AI Technical Summary
In the existing battery technology, the protective structure needs to be pressed vigorously when attached, which causes the exhaust trough to be easily deformed, affecting the exhaust effect, and may cause the battery cell to bulge or the protective structure to fall off.
A protective structure including a base material layer, an adhesive layer and a soluble layer is adopted. The adhesive layer is equipped with an exhaust tank, and the exhaust tank is filled with a soluble layer. This layer can be soluble in the electrolyte, support the protective structure and avoid deformation. Ensure exhaust effect.
Effectively prevent pole burrs from piercing the isolation film, prevent the battery cell from falling off and the protective structure, improve the exhaust effect, and ensure the battery cell stability and appearance quality.
Smart Images
Figure CN222191060U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, and in particular to a protective structure, a battery core and a battery. Background Art
[0002] An isolation film is provided between the cathode and anode sheets of the battery cell, and protective structures such as adhesive tape are pasted on the surface of the electrode sheet to prevent the burrs of the electrode sheet from piercing the isolation film and causing a short circuit. In the related art, an exhaust groove is opened on the side of the protective structure close to the electrode sheet, and the air between the protective structure and the electrode sheet enters the exhaust groove and is discharged through the exhaust groove, thereby avoiding the formation of bubbles between the protective structure and the electrode sheet, causing bulging of the battery cell or even the falling off of the protective structure. However, when attaching the protective structure, it was found that because the protective structure needs to be pressed tightly with great force to be firmly attached, and the exhaust groove is easily deformed when subjected to large force, the exhaust effect is reduced. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a protective structure, which can prevent the exhaust groove from deforming when the protective structure is attached to the surface of the pole piece, so that the exhaust groove has a better exhaust effect.
[0004] The utility model also provides a battery core having the above protection structure.
[0005] The utility model also provides a battery having the battery core.
[0006] According to the protective structure of the embodiment of the first aspect of the utility model, it includes a substrate layer, an adhesive layer and a soluble layer, the adhesive layer is arranged on the surface of the substrate layer, a bonding surface is formed on the side of the adhesive layer away from the substrate layer, the bonding surface is used to bond with the electrode piece, the adhesive layer is provided with an exhaust groove, the exhaust groove runs through the adhesive surface, the soluble layer is filled in the exhaust groove, and the soluble layer is configured to be soluble in an electrolyte.
[0007] The protective structure according to the embodiment of the utility model has at least the following beneficial effects:
[0008] The protective structure is attached to the surface of the pole piece through the adhesive surface of the adhesive layer. After the pole piece and the isolation membrane are assembled into a battery cell, the protective structure can play a protective role to prevent the burrs on the surface of the pole piece from piercing the isolation membrane. The soluble layer in the exhaust groove can be dissolved by the electrolyte in the battery cell to make the exhaust groove penetrate. The air between the pole piece and the protective structure can be discharged into the exhaust groove under pressure and finally discharged through the exhaust groove, thereby avoiding bulging of the battery cell and even the falling off of the protective structure. Since the exhaust groove of the adhesive layer is filled with a soluble layer, when the protective structure is pressed against the surface of the pole piece, the soluble layer can play a supporting role to prevent the exhaust groove from deforming and reducing the exhaust effect.
[0009] According to some embodiments of the present invention, the exhaust groove penetrates the adhesive layer along the thickness direction of the adhesive layer.
[0010] According to some embodiments of the present invention, the exhaust groove includes a first groove, the extension direction of the first groove is perpendicular to the thickness direction of the adhesive layer, and at least one end of the extension direction of the first groove penetrates the adhesive layer.
[0011] According to some embodiments of the present invention, both ends of the first groove in the extension direction penetrate the adhesive layer.
[0012] According to some embodiments of the present invention, the exhaust groove also includes a second groove, the second groove is connected to the first groove, the extension direction of the second groove is perpendicular to the thickness direction of the adhesive layer, and the extension direction of the second groove forms an angle with the extension direction of the first groove.
[0013] According to some embodiments of the present invention, at least one end of the second groove in the extension direction passes through the adhesive layer.
[0014] According to some embodiments of the present invention, both ends of the second groove in the extension direction penetrate the adhesive layer.
[0015] According to some embodiments of the present invention, the width of the first groove and / or the second groove is equal to 1 / 4 of the width of the adhesive layer.
[0016] The battery cell according to the second embodiment of the utility model includes the protection structure described in the first embodiment.
[0017] The battery cell according to the embodiment of the utility model has at least the following beneficial effects:
[0018] By adopting the protective structure of the first aspect of the utility model, the protective structure has a soluble layer filled in the exhaust groove of the adhesive layer. When the protective structure is pressed tightly against the surface of the pole piece, the soluble layer can play a supporting role to prevent the exhaust groove from deforming and reducing the exhaust effect.
[0019] The battery according to the third aspect of the present invention comprises the battery cell described in the second aspect of the present invention.
[0020] The battery according to the embodiment of the utility model has at least the following beneficial effects:
[0021] By adopting the battery cell of the second aspect embodiment of the utility model, and the battery cell adopts the protective structure of the first aspect embodiment of the utility model, the protective structure has a soluble layer filled in the exhaust groove of the adhesive layer. When the protective structure is pressed tightly against the surface of the pole piece, the soluble layer can play a supporting role to prevent the exhaust groove from deforming and reducing the exhaust effect.
[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:
[0024] Figure 1 A schematic diagram of the structure of the protective structure of an embodiment of the utility model;
[0025] Figure 2 for Figure 1 Schematic diagram of the dissolution of the soluble layer;
[0026] Figure 3 for Figure 2 Another perspective of the picture;
[0027] Figure 4 This is a schematic diagram of the installation of the protective structure.
[0028] Figure Number:
[0029] Base material layer 100;
[0030] Adhesive layer 200; adhesive surface 201; exhaust groove 202; first groove 203; second groove 204;
[0031] a dissolvable layer 300;
[0032] Pole piece 400;
[0033] Isolation film 500 . DETAILED DESCRIPTION
[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0035] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0036] In the description of the present utility model, "a plurality" refers to two or more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0038] Some cells will have a separator between the cathode and anode. For example, in soft-pack lithium-ion batteries, the cathode, separator, and anode are wound layer by layer to form a cell. In addition, protective structures such as adhesive tape are attached to the surface of the cathode and anode to prevent the burrs of the cathode and anode from piercing the separator and causing a short circuit.
[0039] In the related art, an exhaust groove is opened on the side of the protective structure close to the pole piece. The air between the protective structure and the pole piece can be squeezed into the exhaust groove and discharged through the exhaust groove due to the overall pressure of the battery cell, thereby avoiding the generation of bubbles between the protective structure and the pole piece, which may cause bulging of the battery cell and affect the appearance quality of the battery cell or cause the protective structure to fall off due to poor adhesion.
[0040] When attaching the protective structure, the side of the protective structure facing away from the bonding surface is generally adsorbed by a vacuum suction cup, and then the protective structure is pressed tightly against the surface of the pole piece. Since the protective structure is a soft structure, the exhaust groove is easily deformed when the force is large. When the deformation is severe, the inner wall of the exhaust groove may even be close to the pole piece, which will cause the exhaust groove space to be reduced or even blocked, thereby reducing the exhaust effect of the exhaust groove.
[0041] Therefore, the utility model provides a protection structure, a battery cell and a battery, which can effectively improve the above problems.
[0042] Reference below Figures 1 to 4 A protection structure, a battery cell and a battery according to embodiments of the present utility model are described.
[0043] According to the protective structure of the first embodiment of the utility model, Figures 1 to 4 As shown, the substrate layer 100 , the adhesive layer 200 and the dissolvable layer 300 are included.
[0044] For example, the substrate layer 100 is used to place the adhesive layer 200 , and the substrate layer 100 can support the adhesive layer 200 .
[0045] The adhesive layer 200 is disposed on the surface of one side of the substrate layer 100. The edge of the adhesive layer 200 may be flush with the edge of the substrate layer 100 along the projection of the thickness direction of the adhesive layer 200. Of course, the edge of the substrate layer 100 may also be located outside the edge of the adhesive layer 200 along the projection of the thickness direction of the adhesive layer 200. A bonding surface 201 is formed on the side of the adhesive layer 200 that is away from the substrate layer 100. The bonding surface 201 is used to bond with the pole piece 400. The adhesive layer 200 is provided with an exhaust groove 202. The exhaust groove 202 runs through the adhesive surface 201, that is, the exhaust groove 202 is opened on the side away from the substrate layer 100 to facilitate the air between the adhesive layer 200 and the pole piece 400 to be discharged into the exhaust groove 202.
[0046] The soluble layer 300 is filled in the exhaust groove 202, and the soluble layer 300 is configured to be soluble in the electrolyte. For example, the soluble layer 300 can be made of biphenyl, ethylene sulfate or propylene sulfate, which are common additives in the electrolyte and can be dissolved in the electrolyte, and will not be described in detail here.
[0047] In this embodiment, the protective structure is attached to the surface of the pole piece 400 through the adhesive surface 201 of the adhesive layer 200. After the pole piece 400 and the isolation film 500 are assembled into a battery cell, the protective structure can play a protective role to prevent the burrs on the surface of the pole piece 400 from piercing the isolation film 500. The soluble layer 300 in the exhaust groove 202 can be dissolved by the electrolyte in the battery cell to make the exhaust groove 202 penetrate. The air between the pole piece 400 and the protective structure can be discharged into the exhaust groove 202 under pressure, and finally discharged through the exhaust groove 202, thereby preventing the battery cell from bulging or even the protective structure from falling off. Since the exhaust groove 202 of the adhesive layer 200 is filled with the soluble layer 300, when the protective structure is pressed against the surface of the pole piece 400, the soluble layer 300 can play a supporting role to prevent the exhaust groove 202 from deforming and reducing the exhaust effect.
[0048] It is understandable that after the battery cell is assembled, there will be a mutual squeezing pressure between the pole piece 400 and the protective structure, and then the air between the pole piece 400 and the protective structure can be squeezed into the exhaust groove 202 under the action of the squeezing pressure, and then discharged through the exhaust groove 202.
[0049] It should be noted that one or both ends of the exhaust groove 202 in the extension direction may be set through, so that the soluble layer 300 in the exhaust groove 202 can contact the electrolyte, and the air in the exhaust groove 202 can be discharged easily. Alternatively, the protective structure may extend to the outside of the pole piece 400, and the opening side of the end of the exhaust groove 202 is exposed outside the pole piece 400, so that the soluble layer 300 in the exhaust groove 202 can also contact the electrolyte, and the air in the exhaust groove 202 can be discharged easily.
[0050] refer to Figures 1 to 4 As shown, in some embodiments of the present invention, the exhaust groove 202 penetrates the adhesive layer 200 along the thickness direction of the adhesive layer 200. That is, the adhesive layer 200 is arranged to penetrate along the thickness direction, and not only the side of the exhaust groove 202 close to the pole piece 400 contacts the pole piece 400, but also the side of the exhaust groove 202 close to the substrate layer 100 contacts the substrate layer 100. In this way, it is only necessary to attach multiple adhesive layers 200 on the surface of the substrate layer 100, and multiple adhesive layer 200 units constitute the adhesive layer 200, and the exhaust groove 202 can be formed between two adjacent adhesive layers 200, without cutting the adhesive layer 200, so the processing is more convenient, and the exhaust groove 202 penetrates along the thickness direction of the adhesive layer 200, the exhaust space of the exhaust groove 202 is larger, the exhaust effect is better, and thus the effect of preventing the battery cell from bulging and the protective structure from falling off is better.
[0051] It should be noted that in some other embodiments of the present invention, the exhaust groove 202 may be formed by penetrating only one side close to the bonding surface 201 to form an opening, and the exhaust groove 202 may not penetrate the side close to the substrate layer 100 .
[0052] refer to Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the exhaust groove 202 includes a first groove 203, the extension direction of the first groove 203 is perpendicular to the thickness direction of the adhesive layer 200, and at least one end of the first groove 203 in the extension direction penetrates the adhesive layer 200. For example, the extension direction of the first groove 203 can be the length direction of the adhesive layer 200, that is, the length direction of the protective structure, and one end or both ends of the first groove 203 penetrate the side wall of the adhesive layer 200 in the length direction.
[0053] In this embodiment, the extension direction of the first groove 203 is perpendicular to the thickness direction of the adhesive layer 200, so that it is convenient for more air in the area between the pole piece 400 and the protective structure to enter the exhaust groove 202 and be discharged through the exhaust groove 202, so that the exhaust effect is better, and the effect of preventing the battery cell from bulging and the protective structure from falling off is better. In addition, at least one end of the extension direction of the first groove 203 passes through the adhesive layer 200, so that it is more convenient for the soluble layer 300 in the exhaust groove 202 to contact the electrolyte in the battery cell, so that the soluble layer 300 in the exhaust groove 202 dissolves better, and at the same time, it is more convenient for the air in the exhaust groove 202 to be discharged, so as to prevent the battery cell from bulging and the protective structure from falling off.
[0054] It should be noted that the number of the first grooves 203 can be one or more, for example, one, which is set according to actual needs. The extending direction of the first grooves 203 can be other suitable directions besides the length direction of the adhesive layer 200, for example, it can be the width direction of the adhesive layer 200, or deviate from the length direction of the adhesive layer 200 by a certain angle, or deviate from the width direction of the adhesive layer 200 by a certain angle.
[0055] refer to Figure 1 and Figure 2 As shown, in a further embodiment of the present invention, both ends of the first groove 203 in the extension direction penetrate the adhesive layer 200. For example, when the first groove 203 extends along the length direction of the adhesive layer 200, both ends of the first groove 203 in the extension direction penetrate the side walls on both sides of the adhesive layer 200 in the length direction.
[0056] In the present embodiment, both ends of the first groove 203 in the extension direction penetrate the adhesive layer 200. Compared with only one end of the first groove 203 penetrating the adhesive layer 200, it is more convenient for the soluble layer 300 in the exhaust groove 202 to contact the electrolyte in the battery cell, thereby making the dissolution effect of the soluble layer 300 in the exhaust groove 202 better. At the same time, the air in the exhaust groove 202 can flow out from both ends of the exhaust groove 202, and the air circulation effect in the exhaust groove 202 is better, and then the exhaust effect is better, thereby preventing the battery cell from bulging and the protective structure from falling off.
[0057] It should be noted that, in some other embodiments of the present invention, one end of the first groove 203 in the extending direction may also penetrate the adhesive layer 200 .
[0058] refer to Figure 1 and Figure 2 As shown, in a further embodiment of the present invention, the exhaust groove 202 also includes a second groove 204, which is connected to the first groove 203, and the extension direction of the second groove 204 is perpendicular to the thickness direction of the adhesive layer 200, and the extension direction of the second groove 204 is at an angle to the extension direction of the first groove 203.
[0059] For example, when the first groove 203 extends along the length direction of the adhesive layer 200, the second groove 204 can extend along the width direction of the adhesive layer 200, that is, along the width direction of the protective structure. In this case, the extension direction of the second groove 204 is at an angle of 90° with the extension direction of the first groove 203, and one end or both ends of the adhesive layer 200 can pass through the adhesive layer 200.
[0060] In this embodiment, the exhaust groove 202 includes not only the first groove 203, but also the second groove 204. The extension direction of the second groove 204 is perpendicular to the thickness direction of the adhesive layer 200, and the extension direction of the second groove 204 is at an angle to the extension direction of the first groove 203. In this way, it is convenient for air in more areas between the pole piece 400 and the protective structure to enter the exhaust groove 202 and be discharged through the exhaust groove 202, thereby improving the exhaust effect and preventing the battery cell from bulging and the protective structure from falling off.
[0061] It should be noted that the number of the second grooves 204 can be one or more, for example, two, which is set according to actual needs. When the number of the second grooves 204 is multiple, the multiple second grooves 204 can be arranged along the extension direction of the first groove 203. In addition to the width direction of the adhesive layer 200, the extension direction of the second groove 204 can also be other suitable directions, for example, it can be the length direction of the adhesive layer 200, or deviate from a certain angle relative to the width direction of the adhesive layer 200, or deviate from a certain angle relative to the length direction of the adhesive layer 200, and only need to form a certain angle with the extension direction of the first groove 203. In addition to 90°, the extension direction of the second groove 204 and the extension direction of the first groove 203 can also be other degrees, such as 45°, 60°, etc., which will not be repeated here.
[0062] refer to Figure 1 and Figure 2 As shown, in a further embodiment of the present invention, at least one end of the second groove 204 extends through the adhesive layer 200. For example, when the second groove 204 extends along the width direction of the adhesive layer 200, one or both ends of the second groove 204 extend through the side wall of the adhesive layer 200 in the width direction.
[0063] In this way, in addition to entering the first slot 203 and being discharged through the first slot 203, the air in the second slot 204 can also be discharged through one or both ends of the extension direction of the second slot 204, and the air in the first slot 203 can also be discharged through the second slot 204, thereby making the exhaust effect of the exhaust slot 202 better, thereby preventing the battery cell from bulging and the protective structure from falling off. In addition, in addition to being in contact with the electrolyte through the first slot 203, the soluble layer 300 in the second slot 204 can also be in contact with the electrolyte through one or both ends of the extension direction of the second slot 204, and the soluble layer 300 in the first slot 203 can also be in contact with the electrolyte through the second slot 204, thereby making the dissolution effect of the soluble layer 300 in the exhaust slot 202 better.
[0064] refer to Figure 1 and Figure 2As shown, in a further embodiment of the present invention, both ends of the second groove 204 in the extension direction penetrate the adhesive layer 200. For example, when the second groove 204 extends along the width direction of the adhesive layer 200, both ends of the second groove 204 in the extension direction penetrate the side walls on both sides of the adhesive layer 200 in the width direction.
[0065] In the present embodiment, both ends of the second groove 204 in the extension direction penetrate the adhesive layer 200. Compared with only one end of the second groove 204 penetrating the adhesive layer 200, it is more convenient for the soluble layer 300 in the second groove 204 to contact the electrolyte in the battery cell, thereby making the dissolution effect of the soluble layer 300 in the second groove 204 better. At the same time, the air in the second groove 204 can flow out from both ends of the exhaust groove 202, and the air circulation effect in the second groove 204 is better, and then the exhaust effect is better, thereby preventing the battery cell from bulging and the protective structure from falling off.
[0066] refer to Figure 3 As shown, in some embodiments of the present invention, the width of the first groove 203 is equal to 1 / 4 of the width of the adhesive layer 200. For example, the width of the first groove 203 is set to L1, and the width of the adhesive layer 200 is set to L2, satisfying: L1 / L2=1 / 4.
[0067] In this embodiment, such an arrangement can ensure the exhaust effect of the first groove 203 while also preventing the bonding area of the bonding layer 200 from being too small and resulting in weak bonding.
[0068] It should be noted that the width of the second groove 204 may also be equal to 1 / 4 of the width of the adhesive layer 200 .
[0069] The battery cell according to the second embodiment of the utility model includes the protection structure of the first embodiment.
[0070] For example, the battery cell may also include a pole piece 400 and an isolating film 500, the pole piece 400 includes a cathode piece and an anode piece, the isolating film 500 is located between the cathode piece and the anode piece, the adhesive layer 200 of the protective structure is adhered to the surfaces on both sides of the pole piece 400, and the substrate layer 100 of the protective structure is close to the isolating film 500.
[0071] The battery cell adopts the protective structure of the first embodiment of the utility model. The protective structure has a soluble layer 300 filled in the exhaust groove 202 of the adhesive layer 200. When the protective structure is pressed tightly against the surface of the pole piece 400, the soluble layer 300 can play a supporting role to prevent the exhaust groove 202 from deforming and reducing the exhaust effect.
[0072] It should be noted that, since the battery cell can adopt all the technical solutions of the protective structure of the first embodiment above, it at least has all the beneficial effects brought by the technical solutions of the first embodiment above, and these additional beneficial effects will not be repeated here.
[0073] It is understandable that other structures and operations of the battery cell according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.
[0074] A battery according to an embodiment of the third aspect of the utility model includes a battery cell according to the embodiment of the second aspect.
[0075] The battery adopts the battery cell of the second embodiment of the utility model, and the battery cell adopts the protective structure of the first embodiment of the utility model. The protective structure is filled with a soluble layer 300 in the exhaust groove 202 of the adhesive layer 200. When the protective structure is pressed tightly against the surface of the pole piece 400, the soluble layer 300 can play a supporting role to prevent the exhaust groove 202 from deforming and reducing the exhaust effect.
[0076] It should be noted that, since the battery can adopt all the technical solutions of the protective structure of the first embodiment above, it at least has all the beneficial effects brought by the technical solutions of the first embodiment above, and these additional beneficial effects will not be repeated here.
[0077] It is understandable that other structures and operations of the battery according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.
[0078] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. A protective structure, characterized in that: include: substrate layer; An adhesive layer is provided on the surface of the substrate layer, a side of the adhesive layer facing away from the substrate layer is formed with an adhesive surface, the adhesive surface is used for bonding with the pole piece, and the adhesive layer is provided with an exhaust groove, the exhaust groove runs through the adhesive surface; The soluble layer is filled in the exhaust groove, and the soluble layer is configured to be soluble in the electrolyte.
2. The protective structure according to claim 1, characterized in that: The exhaust groove penetrates the adhesive layer along a thickness direction of the adhesive layer.
3. The protective structure according to claim 1 or 2, characterized in that: The exhaust groove comprises: The first groove extends in a direction perpendicular to the thickness direction of the adhesive layer, and at least one end of the first groove in the extending direction penetrates the adhesive layer.
4. The protective structure according to claim 3, characterized in that: Both ends of the first groove in the extending direction penetrate the adhesive layer.
5. The protective structure according to claim 3, characterized in that: The exhaust slot also includes: The second groove is connected to the first groove, the extension direction of the second groove is perpendicular to the thickness direction of the adhesive layer, and the extension direction of the second groove forms an angle with the extension direction of the first groove.
6. The protective structure according to claim 5, characterized in that: At least one end of the second groove in the extending direction penetrates the adhesive layer.
7. The protective structure according to claim 6, characterized in that: Both ends of the second groove in the extending direction penetrate the adhesive layer.
8. The protective structure according to claim 5, characterized in that: The width of the first groove and / or the second groove is equal to 1 / 4 of the width of the adhesive layer.
9. A battery cell, characterized in that: Comprising the protective structure according to any one of claims 1 to 8.
10. A battery, characterized in that: Comprising the battery cell as claimed in claim 9.
Citation Information
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