Battery and battery device
By fixing it on the battery insulating film with an appropriate size on the battery cell body, the problem of the remaining tape roll being bonded to the battery ear is solved, reducing the risk of damage to the ear ear and ensuring the fixing effect.
Patent Information
- Application Number
- CN202421065339.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-15
AI Technical Summary
During the battery assembly process, the remaining tape rolls are easily adhered to the battery's ears, resulting in damage to the ears.
By using an appropriately sized adhesive member on the insulating film of the battery, the insulating film is fixed to the battery core body to ensure that the distance between the adhesive member and the electrode is appropriate, and the adhesive member is prevented from being bonded to the electrode.
It effectively prevents the adhesive parts from being bonded to the electrode, reducing the risk of damage to the electrode, and ensuring the fixing effect of the insulation film.
Smart Images
Figure CN222530772U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a battery and a battery device. Background Art
[0002] During the battery assembly process, the battery cell body needs to be wrapped with an insulating film, and the insulating film needs to be sealed and fixed with tape. After the insulating film is sealed with tape, the tape needs to be cut off. However, after the tape is cut off, the remaining tape roll is easy to adhere to the battery's tabs, causing the remaining tape roll to tear the tabs when moving.
[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0004] The utility model provides a battery, which can improve the technical problem that the remaining adhesive tape roll is easily adhered to the pole ear.
[0005] Battery Included:
[0006] A battery cell, the battery cell comprising a battery cell body and two pole ears, the battery cell body comprising two first side surfaces arranged opposite to each other in a first direction, and the two pole ears are respectively connected to the two first side surfaces;
[0007] An insulating film, the insulating film at least partially covering the outer surface of the battery body;
[0008] An adhesive member, at least partially adhered to the insulating film, the adhesive member extends in a first direction, and the adhesive member is used to fix the insulating film to the battery body;
[0009] The distance between the adhesive and the first side surface in the first direction is s, the size of the battery cell body in the first direction is h, and s / h is 0.5%-10%.
[0010] In the present invention, if s / h is too large, s is too large, and the fixing effect of the adhesive on the insulating film is weak; if s / h is too small, s is too small, after the insulating film is fixed by the adhesive, the remaining adhesive material is easily bonded to the tab, thereby causing damage to the tab. The present invention sets s / h to a suitable size, which can ensure the fixing effect of the adhesive on the insulating film and reduce the risk of the adhesive bonding to the tab.
[0011] The utility model also provides a battery device, which comprises the battery mentioned above.
[0012] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to better understand the present disclosure, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, related elements or components may have different arrangements as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each drawing.
[0014] in:
[0015] Figure 1 This is a schematic diagram of the structure of a battery cell in an exemplary embodiment of the battery disclosed herein;
[0016] Figure 2 This is a schematic structural diagram of a battery cell from another perspective in an exemplary embodiment of the battery disclosed herein.
[0017] Description of reference numerals:
[0018] 1. Battery cell; 11. Battery cell body; 111. First side surface; 112. Second side surface; 12. Tab; 2. Insulating film; 21. Sealing end; 3. Adhesive component. DETAILED DESCRIPTION
[0019] The following will be combined with the accompanying drawings in the exemplary embodiments of the present disclosure to clearly and completely describe the technical solutions in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the present disclosure. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of the present disclosure.
[0020] In the description of the present disclosure, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.
[0021] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.
[0022] Further, in the description of the present disclosure, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present disclosure are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present disclosure. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to one or more "upper", "lower", or "inner", "outer" of another element, it can not only be directly connected to the "upper", "lower", "inner", "outer" of another element or elements, but can also be indirectly connected to the "upper", "lower", "inner", "outer" of another element or elements through an intermediate element.
[0023] like Figure 1 , 2 As shown, Figure 1 is a schematic diagram of the structure of a battery cell in an exemplary embodiment of the battery disclosed herein, Figure 2 This is a schematic structural diagram of a battery cell from another perspective in an exemplary embodiment of the battery disclosed herein.
[0024] The battery comprises: a battery cell 1, an insulating film 2, and an adhesive 3. The battery cell 1 comprises a battery cell body 11 and two pole ears 12. The battery cell body 11 comprises two first side surfaces 111 arranged opposite to each other in a first direction X, and the two pole ears 12 are respectively connected to the two first side surfaces 111; the insulating film 2 is at least partially coated on the outer surface of the battery cell body 11; the adhesive 3 is at least partially bonded to the insulating film 2, and the adhesive 3 extends in the first direction X. The adhesive 3 is used to fix the insulating film 2 on the battery cell body 11; the distance between the adhesive 3 and the first side surface 111 in the first direction X is s, the size of the battery cell body 11 in the first direction X is h, and s / h is 0.5%-10%.
[0025] In this exemplary embodiment, s / h is too large, s is too large, and the fixing effect of the adhesive 3 on the insulating film 2 is weak; s / h is too small, s is too small, and after the insulating film 2 is fixed by the adhesive 3, the remaining adhesive material is easily bonded to the tab 12, thereby causing damage to the tab 12. In this exemplary embodiment, s / h is set to a suitable size, which can ensure the fixing effect of the adhesive 3 on the insulating film 2 and reduce the risk of the adhesive 3 bonding to the tab 12.
[0026] In this exemplary embodiment, s / h can be equal to 0.5%, 1%, 1.5%, 2%, 2.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, etc.
[0027] In this exemplary embodiment, the adhesive member 3 may be an adhesive tape. Figure 2As shown, the distance between the adhesive 3 and the first side surface 111 in the first direction X can be the distance between the adhesive 3 and the first side surface 111 above the battery cell body 11 in the first direction X, or it can be the distance between the adhesive 3 and the first side surface 111 below the battery cell body 11 in the first direction X.
[0028] In this exemplary embodiment, the cell body 11 includes a thickness direction, the thickness of the tab is m, the size of the cell body 11 in the thickness direction is n, and m / n is 0.5%-10%. For example, m / n can be equal to 0.5%, 1%, 1.5%, 2%, 2.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, etc. If m / n is too large, the thickness of the tab 12 is too large, and the distance between the surface of the tab 12 and the surface of the cell body 11 between the two first side surfaces 111 is too small. After the insulating film 2 is fixed by the adhesive 3, the remaining adhesive material is more likely to be bonded to the tab 12; if m / n is too small, the thickness of the tab 12 is too small, and the current carrying capacity of the tab 12 is weak. In this exemplary embodiment, m / n is set to a suitable value, which can ensure the current flow capacity of the tab 12 and reduce the risk of the remaining adhesive material adhering to the tab 12 .
[0029] It should be noted that the tab 12 is formed by stacking multiple single-piece tabs, and the thickness of the tab is the size of the tab in the stacking direction of the multiple single-piece tabs. Figure 1 , 2 As shown, the surface of the cell body 11 between the two first side surfaces 111 includes a second side surface 112, and the second side surface 112 is the largest side surface of the cell body 11. The cell body 11 has a length direction, a height direction, and a thickness direction. The height direction of the cell body is the direction in which the tab extends out of the cell body, the thickness direction of the cell body is the direction perpendicular to the largest side surface of the cell body, and the length direction of the cell body is the direction perpendicular to the height direction and the thickness direction of the cell body.
[0030] In this exemplary embodiment, Figure 1 , 2As shown, the extension dimension a of the adhesive 3 perpendicular to the first direction X is 10mm-60mm. For example, the extension dimension a of the adhesive 3 perpendicular to the first direction X can be equal to 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 60mm, etc. If the extension dimension a of the adhesive 3 perpendicular to the first direction X is too small, the adhesive 3 has a poor fixing effect on the insulating film 2; if the extension dimension a of the adhesive 3 perpendicular to the first direction X is too large, when the remaining adhesive material collapses, it is easier to adhere to the tab 12. In this exemplary embodiment, the extension dimension a of the adhesive 3 perpendicular to the first direction X is set to a suitable size, which can not only ensure the fixing effect of the adhesive 3 on the insulating film 2, but also reduce the risk of the adhesive 3 adhering to the tab 12.
[0031] It should be noted that the extension dimension of the adhesive member 3 in the direction perpendicular to the first direction X is the dimension of the adhesive member 3 in the direction perpendicular to both the first direction X and the thickness direction thereof after the adhesive member 3 is flattened. Figure 2 As shown, the adhesive member 3 is located in the area where the second side surface is located. Accordingly, the extension dimension of the adhesive member 3 in the direction perpendicular to the first direction X is the dimension of the adhesive member 3 in the length direction Y of the battery cell body 11 .
[0032] In this exemplary embodiment, Figure 1 , 2 As shown, the distance s between the adhesive member 3 and the first side surface 111 in the first direction X can be 5 mm-50 mm. For example, the distance s between the adhesive member 3 and the first side surface 111 in the first direction X can be equal to 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc.
[0033] In this exemplary embodiment, Figure 1 , 2 As shown, the dimension b of the adhesive 3 in the first direction X is 530mm-580mm. For example, the dimension b of the adhesive 3 in the first direction X can be equal to 530mm, 540mm, 550mm, 555mm, 560mm, 565mm, 570mm, 575mm, 580mm, etc. If the dimension b of the adhesive 3 in the first direction X is too small, the fixing effect of the adhesive 3 on the insulating film 2 is weak; if the dimension b of the adhesive 3 in the first direction X is too large, after the insulating film 2 is fixed by the adhesive 3, the remaining adhesive material is easily bonded to the tab 12. In this exemplary embodiment, the dimension b of the adhesive 3 in the first direction X is set to a suitable size, which can not only ensure the fixing effect of the adhesive 3 on the insulating film 2, but also reduce the risk of the adhesive 3 bonding to the tab 12.
[0034] In this exemplary embodiment, Figure 1 , 2 As shown, the insulating film 2 at least partially covers the surface of the cell body 11 between the two first side surfaces 111. The insulating film 2 can provide a good insulating effect on the surface of the cell body 11 between the two first side surfaces 111.
[0035] In this exemplary embodiment, the cell body is a quadrangular prism, and it should be understood that in other exemplary embodiments, the cell body 11 may also be a cylindrical shape, and the insulating film 2 may at least partially cover the outer peripheral surface of the cell body 11 between the two first side surfaces 111. Accordingly, the adhesive 3 is located in the area where the outer peripheral surface of the cell body 11 is located.
[0036] In this exemplary embodiment, Figure 1 , 2 As shown, at least part of the insulating film 2 is wound on the surface of the battery cell body 11 between the two first side surfaces 111 with the first direction X as the winding axis, and the insulating film 2 includes a sealing end 21, which extends along the first direction X, and the adhesive 3 covers at least part of the sealing end. The sealing end 21 is the winding end of the insulating film 2. The insulating film 2 and the battery cell body 11 have good structural stability.
[0037] In this exemplary embodiment, Figure 1 , 2 As shown, the sealing end 21 is located in the area where the second side surface 112 is located, and the adhesive member 3 is located in the area where the second side surface 112 is located. This arrangement can facilitate the adhesion of the adhesive member 3. It should be understood that in other exemplary embodiments, the adhesive member 3 can also be located on the smaller side surface between the two first side surfaces 111.
[0038] It should be noted that a battery includes a cell and an electrolyte, and a battery is the smallest unit capable of performing electrochemical reactions such as charge / discharge. A cell refers to a unit formed by winding or laminating a stacked portion, wherein the stacked portion includes a first pole sheet, a separator, and a second pole sheet. When the first pole sheet is a positive pole sheet, the second pole sheet is a negative pole sheet. The polarities of the first pole sheet and the second pole sheet can be interchanged. The first pole sheet and the second pole sheet are coated with an active material.
[0039] In this exemplary embodiment, the battery may be a lithium-ion battery. It should be understood that in other exemplary embodiments, the battery may also be a nickel-cadmium battery, a nickel-metal hydride battery, a lithium polymer battery, a sodium-ion battery, a solid-state battery, etc.
[0040] In this exemplary embodiment, the battery can be a square battery, that is, the battery can be a quadrangular prism battery. The quadrangular prism battery mainly refers to a battery with a prism shape, but it is not strictly limited whether each side of the prism must be a straight line in the strict sense, and the corners between the sides are not necessarily right angles, and can be arc transitions.
[0041] In other exemplary embodiments, the battery may be a cylindrical battery, and the battery case of the cylindrical battery may include two circular end surfaces and a curved surface located between the two circular end surfaces.
[0042] The battery may be a wound battery, that is, a first pole piece, a second pole piece having electrical properties opposite to the first pole piece, and a diaphragm sheet arranged between the first pole piece and the second pole piece are wound to obtain a winding core.
[0043] The battery can also be a laminated battery, which is not only convenient to group, but also can be processed to obtain a longer battery. Specifically, the battery cell is a laminated battery cell, which has a first pole piece stacked on top of each other, a second pole piece with electrical properties opposite to the first pole piece, and a diaphragm sheet arranged between the first pole piece and the second pole piece, so that multiple pairs of first pole pieces and second pole pieces are stacked to form a laminated battery cell.
[0044] The exemplary embodiment further provides a battery device, which is a battery module or a battery pack.
[0045] The battery module includes a plurality of batteries, which may be square batteries, and the battery module may further include end plates and side plates, which are used to fix the plurality of batteries. The batteries may be cylindrical batteries, which may be arranged on a support plate to form a battery module.
[0046] The battery pack includes a plurality of batteries and a box body, and the box body is used to fix the plurality of batteries.
[0047] It should be noted that the battery pack includes a battery, and the battery may be multiple, and the multiple batteries are arranged in the box. Among them, the multiple batteries can be installed in the box after forming a battery module. Alternatively, the multiple batteries can be directly arranged in the box, that is, there is no need to group the multiple batteries, and the box is used to fix the multiple batteries.
[0048] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing what is disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and embodiments are to be considered merely as exemplary, and the true scope and spirit of the present disclosure are indicated by the claims.
[0049] The drawings in the present disclosure only relate to the structures involved in the present disclosure, and other structures may refer to the usual design. In the absence of conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments. It should be understood by those of ordinary skill in the art that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, and should be included in the scope of the claims of the present disclosure.
[0050] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A battery, characterized in that: The battery comprises: A battery cell (1), the battery cell (1) comprising a battery cell body (11) and two pole ears (12), the battery cell body (11) comprising two first side surfaces (111) arranged opposite to each other in a first direction (X), the two pole ears being respectively connected to the two first side surfaces (111); An insulating film (2), the insulating film (2) at least partially covering the outer surface of the battery cell body (11); an adhesive member (3) at least partially bonded to the insulating film (2), the adhesive member (3) extending in the first direction (X), and the adhesive member (3) being used to fix the insulating film (2) to the battery cell body (11); The distance between the adhesive (3) and the first side surface (111) in the first direction (X) is s, the size of the battery cell body (11) in the first direction (X) is h, and s / h is 0.5%-10%.
2. The battery according to claim 1, characterized in that The battery cell body (11) includes a thickness direction, the thickness of the pole ear is m, the dimension of the battery cell body (11) in the thickness direction is n, and m / n is 0.5%-10%.
3. The battery according to claim 1, characterized in that The extension dimension of the adhesive component (3) in a direction perpendicular to the first direction (X) is 10 mm to 60 mm.
4. The battery according to claim 1, characterized in that The distance between the adhesive component (3) and the first side surface (111) in the first direction (X) is 5 mm-50 mm.
5. The battery according to claim 4, characterized in that The size of the adhesive component (3) in the first direction (X) is 530 mm-580 mm.
6. The battery according to any one of claims 1 to 5, characterized in that: The insulating film (2) at least partially covers the surface of the battery cell body (11) located between the two first side surfaces (111).
7. The battery according to any one of claims 1 to 5, characterized in that: At least a portion of the insulating film (2) is wound around the surface of the battery cell body (11) between the two first side surfaces (111) with the first direction (X) as the winding axis, the insulating film (2) comprises a sealing end (21), the sealing end (21) extends along the first direction (X), and the adhesive (3) covers at least a portion of the sealing end (21).
8. The battery according to claim 7, characterized in that The surface of the battery cell body (11) located between the two first side surfaces (111) includes a second side surface (112), the second side surface (112) is the largest side surface of the battery cell body (11), the sealing end (21) is located in the area where the second side surface (112) is located, and the adhesive (3) is located in the area where the second side surface (112) is located.
9. The battery according to any one of claims 1 to 5, characterized in that: The battery is a quadrangular prism battery.
10. A battery device, characterized in that: The battery device comprises the battery according to any one of claims 1 to 9.