Battery and electric device

Abstract

The utility model provides a battery and an electric device. The battery comprises a shell, a battery cell and a structural adhesive, the shell is provided with a containing cavity. The containing cavity is filled with electrolyte. And the battery cell is arranged in the accommodating cavity. And moreover, the battery cell is infiltrated in the electrolyte, so that a gap is formed between the outer surface of the battery cell and the inner surface of the shell. The structural adhesive is dispersedly coated on the outer surface of the battery cell and is used for adhering the battery cell to the inner surface of the shell. The structural adhesive is arranged between the battery cell and the shell, so that the battery cell is adhered to the inner surface of the shell through the structural adhesive, displacement or shaking of the battery cell in the accommodating cavity is avoided, and the probability that the battery cell is collided and damaged due to vibration is reduced. Moreover, the structural adhesive also has good shock resistance, can buffer part of shock generated by impact force, and further reduces the probability that the battery cell is collided and damaged due to shock, so that the service life of the battery is prolonged, and the use cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a battery and an electrical device. Background Art

[0002] When an electric vehicle encounters adverse road conditions or bumps during driving, the battery in the electric vehicle will be vibrated or impacted.

[0003] In the related art, a layer of foam is wrapped around the outside of the battery housing to cushion external vibrations or impacts. However, the battery cells placed in the housing will shake in the housing, making the battery cells easily damaged by bumps and collisions. Utility Model Content

[0004] The present application provides a battery and an electrical device, which prevent the battery cell from shaking in the shell, reduce the probability of battery cell damage, thereby extending the service life of the battery and reducing the cost of use.

[0005] In a first aspect, the present application provides a battery comprising: a housing, a battery cell, and structural adhesive. The housing has a cavity. The cavity is filled with an electrolyte. The battery cell is disposed within the cavity. The battery cell is immersed in the electrolyte, such that a gap exists between the outer surface of the battery cell and the inner surface of the housing. The structural adhesive is dispersedly applied to the outer surface of the battery cell to bond the battery cell to the inner surface of the housing.

[0006] With the first aspect, a structural adhesive is provided between the battery cell and the housing, allowing the battery cell to be bonded to the inner surface of the housing via the structural adhesive, thereby preventing the battery cell from shifting or shaking within the housing cavity, thereby reducing the probability of the battery cell being damaged by vibration. Furthermore, the structural adhesive has excellent shock resistance, buffering some of the vibration generated by the impact force, further reducing the probability of the battery cell being damaged by vibration, thereby extending the battery life and reducing the cost of use.

[0007] In one possible design, the outer surface of the battery cell includes two end surfaces, two side surfaces, a top surface, and a bottom surface. The areas of the two side surfaces are larger than those of the top and bottom surfaces. The areas of the top and bottom surfaces are larger than those of the two end surfaces. Structural adhesive is dispersed and applied to the two side surfaces.

[0008] Based on the description of the above embodiment, the structural adhesive is dispersedly applied to two side surfaces of the outer surface, which can reduce the amount of structural adhesive used to ensure sufficient electrolyte in the housing. Furthermore, the structural adhesive is dispersedly applied to the side surface with the largest area of ​​the outer surface to ensure the bonding strength of the battery cell.

[0009] In one possible design, the battery cell includes a first end and a second end in a first direction. The first direction is the length of the battery cell. Structural adhesive can be applied in a dispersed manner to the first and second ends, such that both ends are bonded to the inner surface of the housing.

[0010] Based on the description of the above embodiment, the battery cell includes a first end and a second end in a first direction. Structural adhesive is dispersedly applied to the first and second ends, thereby providing shock-resistant and damage-resistant protection for weak areas in the battery cell, thereby significantly extending the battery's service life and reducing its cost.

[0011] In one possible design, the structural adhesive may be a pressure sensitive adhesive.

[0012] Based on the description of the above embodiments, pressure-sensitive adhesive is suitable for bonding environments within batteries. Furthermore, the pressure-sensitive adhesive bonding process is convenient and quick, simplifying the bonding steps while ensuring bonding strength. This allows operators to quickly secure the battery cell to the inner surface of the housing, shortening the securing time and reducing assembly costs.

[0013] In a possible design, the thickness of the structural adhesive may be greater than or equal to 0.8 mm, and the thickness of the structural adhesive may be less than or equal to 1.2 mm.

[0014] Based on the description of the above embodiment, the thickness range of the structural adhesive is limited to between 0.8mm and 1.2mm to adapt to the size of most shells and battery cells on the market.

[0015] In one possible design, the structural adhesive and the battery cell may include multiple bonding units. The bonding units may be circular or strip-shaped.

[0016] Based on the description of the above embodiments, the operator can arbitrarily select the shape of the bonding unit as needed.

[0017] In a possible design, the bonding units are evenly distributed on the outer surface of the battery cell.

[0018] Based on the description of the above embodiment, the bonding units are evenly distributed on the outer surface of the battery cell, which can evenly distribute the bonding stress between the structural adhesive and the battery cell, thereby improving the stability of the battery cell bonding and further extending the service life of the battery.

[0019] In one possible design, a buffer material is provided in the structural adhesive.

[0020] Based on the description of the above embodiment, a buffer material can be added in the middle of the structural adhesive to further absorb or disperse the impact force, so that the probability of vibration damage to the battery cell due to impact is further reduced, thereby extending the service life of the battery.

[0021] In one possible design, a cavity is defined within the structural adhesive, and the cushioning material is filled within the cavity. Alternatively, the battery includes two layers of structural adhesive. One layer adheres to the outer surface of the battery cell, and the other adheres to the inner wall of the casing. The cushioning material is bonded between the two layers of structural adhesive.

[0022] Based on the description of the above embodiments, the operator can select any connection method between the structural adhesive and the buffer material as needed.

[0023] In a second aspect, the present application provides an electrical device, comprising: a battery according to any one of the above embodiments, the battery being used to provide electrical energy.

[0024] The beneficial effects of the electrical device provided in the second aspect can be referred to the beneficial effects brought about by the first aspect and the various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is a schematic diagram of the assembly of a structural adhesive, a battery cell, and a shell in an embodiment of the present application.

[0027] Figure 2 This is a schematic diagram of the assembly of another structural adhesive, battery cell and shell in an embodiment of the present application.

[0028] Figure 3 This is a schematic structural diagram of a battery cell in an embodiment of the present application.

[0029] Figure 4 for Figure 3 Top view of .

[0030] Figure 5 This is a schematic structural diagram of a Mylar film in an embodiment of the present application.

[0031] Description of reference numerals:

[0032] 1- shell;

[0033] 2-battery cell; 21-end surface; 22-side surface; 23-top surface; 24-bottom surface; 25-tab; 26-Mylar film;

[0034] 2a-first end; 2b-second end;

[0035] 3-Structural adhesive;

[0036] X - first direction. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0040] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0042] The directional words appearing in the following description are all directions shown in the drawings and do not limit the specific structure of this application. For example, in the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting this application.

[0043] In addition, the expressions indicating directions such as the X direction, Y direction, and Z direction used to illustrate the operation and construction of the various components of this embodiment are not absolute but relative, and although these indications are appropriate when the various components are in the positions shown in the figures, when these positions are changed, these directions should be interpreted differently to correspond to the changes.

[0044] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0045] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. "Connected" or "connected" in a circuit structure can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0047] An electrical device is an electrical device that uses electricity to perform specific functions. This includes, but is not limited to, battery-powered vehicles and electric cars. These devices utilize the power provided by their battery packs to perform various functions or services.

[0048] For example, the electrical device is an electric car. When the electric car encounters bad road conditions or a collision during driving, the battery in the electric car will be vibrated or impacted.

[0049] In the related art, a layer of foam is wrapped around the outside of the battery shell to cushion external vibrations or impacts. However, the battery cells set in the shell will shake in the shell, making the battery cells easily damaged by bumps during impact. Based on this, the present application proposes a battery and an electrical device, which sets a structural adhesive between the battery cells and the shell to make the battery cells adhere to the shell, thereby preventing the battery cells from shaking in the shell and reducing the probability of battery cell damage, thereby extending the service life of the battery and reducing the cost of use. Figure 1-Figure 5 Provide a detailed description.

[0050] First, as Figure 1 or Figure 2 As shown, the present application provides a battery. The battery includes a housing 1, a battery cell 2, and a structural adhesive 3. The housing 1 has a receiving cavity. The receiving cavity is filled with an electrolyte. The battery cell 2 is disposed in the receiving cavity. Furthermore, the battery cell 2 is immersed in the electrolyte, so that a gap exists between the outer surface of the battery cell 2 and the inner surface of the housing 1. The structural adhesive 3 is dispersedly applied to the outer surface of the battery cell 2 to bond the battery cell 2 to the inner surface of the housing 1.

[0051] The battery casing 1 is the outermost layer of the battery, providing physical protection for other components and preventing mechanical damage. It also provides heat dissipation and electrical insulation. The material used for casing 1 typically requires good mechanical strength, corrosion resistance, lightness, and adequate thermal conductivity. Examples include steel, aluminum, plastic, and composite materials.

[0052] The battery cell 2 is disposed within the housing 1 and is used for energy storage or power conversion. During energy storage or power conversion, the battery cell 2 requires a charge-discharge reaction with an electrolyte. The electrolyte can be filled within the housing 1.

[0053] It is understandable that when the battery cell 2 is immersed in the shell 1 filled with electrolyte, there is a gap between the outer surface of the battery cell 2 and the inner surface of the shell 1, so that the battery cell 2 can be displaced or shaken in the accommodating cavity and bump against the inner surface of the box, causing damage to the battery cell 2.

[0054] Based on this, structural adhesive 3 is coated on the outer surface of the battery cell 2 so that the battery cell 2 is bonded to the inner surface of the shell 1 through the structural adhesive 3, thereby preventing the battery cell 2 from being displaced or shaken in the accommodating cavity, thereby reducing the probability of the battery cell 2 being bumped and damaged due to vibration.

[0055] Specifically, the structural adhesive 3 is an adhesive with relatively high bonding strength, which can form a firm connection between the surfaces of different materials, such as metal, glass, concrete, and plastic.

[0056] In addition, the structural adhesive 3 also has good shock resistance. The structural adhesive 3 is bonded between the battery cell 2 and the housing 1, which can buffer some of the vibrations generated by the impact force, further reducing the probability of the battery cell 2 being bumped and damaged due to vibration.

[0057] Furthermore, if the outer surface of the battery cell 2 is entirely coated with the structural adhesive 3, the gap between the battery cell 2 and the housing 1 will be filled with the structural adhesive 3, resulting in insufficient electrolyte content and affecting the power supply function of the battery.

[0058] Based on this, the structural adhesive 3 can be dispersedly coated on the outer surface of the battery core 2 to leave enough filling space for the electrolyte to ensure the normal power supply function of the battery.

[0059] In summary, the structural adhesive 3 is provided between the battery cell 2 and the housing 1, so that the battery cell 2 is bonded to the inner surface of the housing 1 via the structural adhesive 3, preventing the battery cell 2 from shifting or shaking within the housing cavity, thereby reducing the probability of the battery cell 2 being damaged by vibration. Furthermore, the structural adhesive 3 has excellent shock resistance, which can partially buffer the vibration generated by the impact force, further reducing the probability of the battery cell 2 being damaged by vibration, thereby extending the battery life and reducing the cost of use.

[0060] Furthermore, in order to ensure that there is a sufficient amount of electrolyte in the housing 1, the present application may define the coating position of the structural adhesive 3 as follows:

[0061] In some embodiments, as Figure 3 As shown, the outer surface of the battery cell 2 includes two end surfaces 21, two side surfaces 22, a top surface 23, and a bottom surface 24. The areas of the two side surfaces 22 are larger than those of the top surface 23 and the bottom surface 24. The areas of the top surface 23 and the bottom surface 24 are larger than those of the two end surfaces 21. Structural adhesive 3 is dispersed and applied to the two side surfaces 22.

[0062] Specifically, the two end surfaces 21, the two side surfaces 22, the top surface 23 and the bottom surface 24 of the outer surface can all serve as bonding surfaces of the structural adhesive 3. Among them, the side surface 22 is the bonding surface with the largest area.

[0063] According to the description of the above embodiment, the structural adhesive 3 is dispersedly applied to the two side surfaces 22 of the outer surface, which can reduce the amount of structural adhesive 3 used to ensure that there is a sufficient amount of electrolyte in the housing 1. The structural adhesive 3 is also dispersedly applied to the side surface 22 with the largest area of ​​the outer surface to ensure the bonding strength of the battery cell 2.

[0064] Furthermore, in order to extend the service life of the battery while reducing the amount of structural adhesive 3, the present application may define the coating position of the structural adhesive 3 as follows:

[0065] In some embodiments, as Figure 4 As shown, the battery cell 2 includes a first end 2a and a second end 2b in a first direction X. The first direction X is the length direction of the battery cell 2. The structural adhesive 3 can be applied in a dispersed manner on the first end 2a and the second end 2b, so that the first end 2a and the second end 2b are both bonded to the inner surface of the housing 1.

[0066] Specifically, if Figure 3 and Figure 4 As shown, the battery cell 2 may include a pole piece and a tab 25. The pole piece is used to react with the electrolyte to charge and discharge. The tab 25 is connected to both ends of the battery cell 2 along its length. It is used to connect the pole piece with the external circuit and transmit the electrical energy converted by the pole piece to the electrical device, allowing the battery to provide electrical energy to the electrical device. The length direction of the battery cell 2 can be set as a first direction X. Based on the above, it can be concluded that the tab 25 is provided at the first end 2a and the second end 2b.

[0067] Furthermore, the tab 25 is formed by stacking or convoluting multiple layers of metal foils, which are thin and not very hard, and are easily damaged by vibration due to collision.

[0068] Based on this, structural adhesive 3 is coated on the first end 2a and the second end 2b, so that the tabs 25 located at the first end 2a and the second end 2b can be fixed on the inner surface of the shell 1, greatly reducing the probability of the tabs 25 being damaged by vibration due to bumps, and achieving shock resistance and damage prevention of weak parts in the battery cell 2, thereby greatly extending the service life of the battery and reducing the cost of use.

[0069] Furthermore, the effect of the dispersed coating of the structural adhesive 3 has been described in the above embodiments and will not be repeated here.

[0070] In summary, the battery cell 2 includes a first end 2a and a second end 2b in the first direction X. The structural adhesive 3 is dispersedly applied to the first end 2a and the second end 2b, thereby achieving shock-resistant and damage-proof protection for weak parts of the battery cell 2, thereby greatly extending the battery life and reducing usage costs.

[0071] Furthermore, in order to enhance the fixing effect of the battery cell 2, the present application may also define the types of the structural adhesive 3 as follows:

[0072] In some embodiments, the structural adhesive 3 may be a pressure-sensitive adhesive.

[0073] Pressure sensitive adhesive (PSA) refers to a type of adhesive that is sensitive to pressure and can be bonded to the adherend with just a little pressure from the finger. It is convenient and quick and does not require the use of solvents or other auxiliary means.

[0074] Furthermore, pressure-sensitive adhesives (PSA) offer excellent electrical insulation, good temperature resistance, stable chemical properties, and high bond strength, making them ideal for use in battery packs. Specifically, their excellent electrical insulation prevents short circuits within the battery. Their excellent temperature resistance allows them to withstand the high operating temperatures encountered during battery charge and discharge reactions. Their stable chemical properties resist chemical attacks that may occur during battery operation. Their high bond strength allows them to meet stringent bonding requirements and ensures the stability of the bonded connection.

[0075] Furthermore, the structural adhesive 3 can preferably be a hot melt pressure sensitive adhesive. Hot melt pressure sensitive adhesive is a pressure sensitive adhesive that can be cured without the use of solvents. When heated to a certain temperature, it becomes liquid and can be applied or injected onto the surface to be bonded. After cooling, it quickly solidifies to form a highly adhesive film.

[0076] The battery has a relatively high operating temperature during the charge and discharge reaction, and gluing can be achieved at the above operating temperature without manual operation, which is more convenient and quick.

[0077] As described in the above embodiments, pressure-sensitive adhesive is suitable for bonding environments within batteries. Furthermore, the pressure-sensitive adhesive bonding process is convenient and quick, simplifying the bonding steps while ensuring bonding strength. This allows operators to quickly secure the battery cell 2 to the inner surface of the housing 1, shortening the securing time and reducing assembly costs.

[0078] Furthermore, in order to make the structural adhesive 3 universal, the present application may define the specifications of the structural adhesive 3 as follows:

[0079] In some embodiments, the thickness of the structural adhesive 3 may be greater than or equal to 0.8 mm, and the thickness of the structural adhesive 3 may be less than or equal to 1.2 mm.

[0080] According to the description of the above embodiment, the thickness range of the structural adhesive 3 is limited to between 0.8mm and 1.2mm to adapt to the size of most shells 1 and battery cells 2 on the market.

[0081] Specifically, the thickness of the structural adhesive 3 is preferably 1.0 mm.

[0082] Furthermore, since the structural adhesive 3 is dispersedly coated on the battery cell 2, a plurality of bonding units may be included between the structural adhesive 3 and the battery cell 2. The shapes of the bonding units may include but are not limited to the following two forms:

[0083] Form 1, such as Figure 1 As shown, the bonding unit may be circular.

[0084] Form 2, such as Figure 2 and Figure 3 As shown, the bonding unit may be in the shape of a strip.

[0085] According to the description of the above embodiment, the operator can arbitrarily select the shape of the bonding unit as needed.

[0086] In order to further improve the bonding stability of the battery cell 2, the present application may also design the distribution of the bonding units as follows:

[0087] In some embodiments, the bonding units are evenly distributed on the outer surface of the battery core 2 .

[0088] According to the description of the above embodiment, the bonding units are evenly distributed on the outer surface of the battery cell 2, which can evenly distribute the bonding stress between the structural adhesive 3 and the battery cell 2, thereby improving the bonding stability of the battery cell 2 and further extending the service life of the battery.

[0089] In order to further improve the shock resistance of the battery cell 2, the present application may also be designed as follows:

[0090] In some embodiments, a buffer material (not shown in the figures) is provided in the structural adhesive 3 .

[0091] The buffer material may be an elastic material, a special chemical mixture or a physical partition, and is used to absorb or disperse the impact force applied to the battery cell 2 .

[0092] According to the description of the above embodiment, a buffer material can be added in the middle of the structural adhesive 3 to further absorb or disperse the impact force, so as to further reduce the probability of vibration damage to the battery cell 2 due to impact, thereby extending the service life of the battery.

[0093] Specifically, the connection method between the structural adhesive 3 and the buffer material may include but is not limited to the following two connection methods:

[0094] Connection method 1: A cavity is provided in the structural adhesive 3, and the buffer material is filled in the cavity.

[0095] Connection method 2: The battery includes two layers of structural adhesive 3. One layer of structural adhesive 3 is bonded to the outer surface of the battery cell 2, and the other layer of structural adhesive 3 is bonded to the inner wall of the housing 1. The buffer material is bonded between the two layers of structural adhesive 3.

[0096] According to the description of the above embodiment, the operator can arbitrarily select the connection method between the structural adhesive 3 and the buffer material according to needs.

[0097] Considering the convenience of bonding the structural adhesive 3 to the battery cell 2, this application also includes the following design:

[0098] In some embodiments, the outer surface of the battery cell 2 is wrapped with a Mylar film 26 , and the structural adhesive 3 is bonded to the Mylar film 26 .

[0099] Specifically, the Mylar film 26 surrounds the battery cell 2 and can cover the two side surfaces 22 , the top surface 23 and the bottom surface 24 of the battery cell 2 .

[0100] The operator can first bond the structural adhesive 3 to the Mylar film 26, and then wrap the Mylar film 26 on the battery cell 2. Figure 5 As shown, the Mylar film 26 is unfolded into a plane before being wrapped around the battery core 2, so that the structural adhesive 3 bonded to the two side surfaces 22 can be bonded on the same plane, simplifying the bonding steps.

[0101] According to the description of the above embodiment, the outer surface of the battery cell 2 is wrapped with a Mylar film 26, and the structural adhesive 3 is bonded to the Mylar film 26, which simplifies the bonding process and improves the convenience of bonding the structural adhesive 3 to the battery cell 2. Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of this application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0102] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that: include: Shell, battery cell and structural adhesive; The housing has a receiving cavity; The accommodating cavity is filled with electrolyte; The battery cell is arranged in the accommodating cavity; Furthermore, the battery core is immersed in the electrolyte so that there is a gap between the outer surface of the battery core and the inner surface of the shell; The structural adhesive is dispersedly coated on the outer surface of the battery core and is used to adhere the battery core to the inner surface of the shell.

2. The battery according to claim 1, characterized in that The outer surface of the battery cell includes two end surfaces, two side surfaces, a top surface and a bottom surface; Wherein, the areas of the two side surfaces are greater than the areas of the top surface and the bottom surface; The areas of the top surface and the bottom surface are greater than the areas of the two end surfaces; The structural adhesive is dispersedly coated on the two side surfaces.

3. The battery according to claim 1, characterized in that The battery cell includes a first end and a second end in a first direction; Wherein, the first direction is the length direction of the battery cell; The structural adhesive is dispersedly coated on the first end and the second end, so that the first end and the second end are both adhered to the inner surface of the shell.

4. The battery according to any one of claims 1 to 3, characterized in that The structural adhesive is a pressure-sensitive adhesive.

5. The battery according to any one of claims 1 to 3, characterized in that The thickness of the structural adhesive is greater than or equal to 0.8 mm; Furthermore, the thickness of the structural adhesive is less than or equal to 1.2 mm.

6. The battery according to any one of claims 1 to 3, characterized in that The structural adhesive and the battery core include a plurality of bonding units; The bonding unit is circular; or; The bonding unit is in a strip shape.

7. The battery according to claim 6, characterized in that The bonding units are evenly distributed on the outer surface of the battery core.

8. The battery according to any one of claims 1 to 3, characterized in that Buffer material is provided in the structural adhesive.

9. The battery according to claim 8, characterized in that A cavity is provided in the structural adhesive, and the buffer material is filled in the cavity; or, The battery comprises two layers of the structural adhesive; One layer of the structural adhesive is bonded to the outer surface of the battery cell, and another layer of the structural adhesive is bonded to the inner surface of the shell; The buffer material is bonded between the two layers of structural adhesive.

10. An electrical device, characterized in that: The battery according to any one of claims 1 to 9 is used to provide electrical energy.

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