Thermal insulation mat, battery and electric device

Abstract

The application relates to the technical field of battery-related components, in particular to a heat insulation pad, a battery and an electric device, the heat insulation pad comprising a heat insulation pad body and a first protruding structure, the heat insulation pad body being provided with a first surface with the largest area and a first side wall connected with the first surface, and the first protruding structure being fixedly connected with the first side wall and protruding from the first side wall. When assembling the battery, the heat insulation pad can be placed between two adjacent battery monomers to play a heat insulation role and improve the safety of the battery. When the battery is assembled with a plurality of battery monomers, the corner area of the adjacent battery monomers can form a flow resistance structure through the first protruding structure of the heat insulation pad, so that the probability of structural glue flowing from one end of the battery monomer to the other end of the battery monomer along the corner area of the battery monomer is reduced, thereby reducing the possibility of quality problems of the battery caused by structural glue overflow.

Description

Technical Field

[0001] This application relates to the field of battery-related component technology, and in particular to a heat insulation pad, a battery, and an electrical device. Background Technology

[0002] This section provides only background information relevant to this application and is not necessarily prior art.

[0003] In some technologies, structural adhesive is used to fix the battery cells during battery module assembly. The structural adhesive can easily overflow from the corners of adjacent battery cells, leading to battery quality problems. Summary of the Invention

[0004] In view of the above problems, this application provides a heat insulation pad, a battery, and an electrical device to alleviate the problem of structural adhesive overflow and improve battery quality.

[0005] The first aspect of this application provides a heat insulation pad, including a heat insulation pad body and a first protruding structure. The heat insulation pad body has a first surface with the largest area and a first sidewall connected to the first surface. The first protruding structure is fixedly connected to the first sidewall and protrudes from the first sidewall.

[0006] In the technical solution of this application embodiment, during battery assembly, a heat insulation pad can be placed between two adjacent battery cells to provide heat insulation and improve battery safety. When multiple battery cells are assembled, the corner areas of adjacent battery cells can form a flow-blocking structure through the first protruding structure of the heat insulation pad. This reduces the probability of structural adhesive flowing from one end of the battery cell along the pores of the corner area to the other end, thus reducing the possibility of battery quality problems caused by structural adhesive overflow.

[0007] In addition, the heat insulation pad according to this application may also have the following additional technical features:

[0008] In some embodiments of this application, at least two first protruding structures are provided, and all first protruding structures are arranged at intervals. By providing multiple first protruding structures, recesses are formed between the multiple first protruding structures. When the structural adhesive overflows from the fixed end of the battery cell to the other end, it can be stopped by the multiple first protruding structures. Furthermore, since the first protruding structures and adjacent recesses extend the overflow path of the structural adhesive and increase the difficulty of overflowing the structural adhesive, the overflow prevention effect of the structural adhesive is improved.

[0009] In some embodiments of this application, the heat insulation pad further includes a second protruding structure, and the heat insulation pad body also has a second sidewall connected to the first surface. The second sidewall and the first sidewall are disposed opposite to each other, and the second protruding structure is fixedly connected to the second sidewall and protrudes from the second sidewall. The first protruding structure and the second protruding structure are opposite to each other on opposite sides of the heat insulation pad body, so that both ends of the heat insulation pad have anti-overflow adhesive properties. In this way, when the heat insulation pad is connected to other heat insulation pads, the first protruding structure of the heat insulation pad can cooperate and connect with the second protruding structure of the adjacent heat insulation pad, thereby improving the anti-overflow adhesive properties of the heat insulation pad.

[0010] In some embodiments of this application, at least two second protruding structures are provided, and all second protruding structures are arranged at intervals. This embodiment, by providing multiple second protruding structures, forms recesses between them. When the structural adhesive overflows from the fixed end of the battery cell to the other end, it is stopped by the multiple second protruding structures. Furthermore, because the second protruding structures and adjacent recesses extend the overflow path of the structural adhesive and increase the difficulty of overflow, the anti-overflow effect on the structural adhesive is improved.

[0011] In some embodiments of this application, the first protruding structure has a first abutting portion, and the second protruding structure has a second abutting portion. The first abutting portion is used to abut against the second abutting portions of other heat insulation pads. By providing the first and second abutting portions, this embodiment enables the heat insulation pad to abut against adjacent heat insulation pads, thereby enhancing the heat insulation pad's flow-resisting effect on the structural adhesive.

[0012] In some embodiments of this application, the first protruding structure and the second protruding structure are staggered so that the first abutting portion can abut against the second abutting portions of other heat insulation pads. The staggered arrangement of the first and second protruding structures allows the first abutting portion to abut against two adjacent second abutting portions of other heat insulation pads, and the second abutting portion to abut against two adjacent first abutting portions of other heat insulation pads. This facilitates the assembly and mating of adjacent heat insulation pads and improves the flow resistance effect on the structural adhesive.

[0013] In some embodiments of this application, the first protruding structure protrudes from the first sidewall along a first direction, and the second protruding structure protrudes from the second sidewall in the opposite direction to the first direction. The first protruding structure extends parallel to the extension direction of the second protruding structures of other heat insulation pads, which facilitates the assembly of the heat insulation pad with other heat insulation pads and is beneficial to the surface-to-surface contact between the first and second protruding structures, thereby improving the flow resistance effect on the structural adhesive.

[0014] In some embodiments of this application, the first direction and the first sidewall form an acute angle. By setting the first direction at an acute angle to the first sidewall, the first protruding structure is inclined relative to the first sidewall, and the second protruding structure is inclined relative to the second sidewall, which facilitates the contact and engagement between the first protruding structure and the second protruding structure of other heat insulation pads.

[0015] In some embodiments of this application, the surface of the first protruding structure facing away from the first sidewall is an arc surface, and the opening of the arc surface faces the first sidewall; the surface of the second protruding structure facing away from the second sidewall is an arc surface, and the opening of the arc surface faces the second sidewall.

[0016] In some embodiments of this application, the first protruding structure is made of an elastic material; and / or, the second protruding structure is made of an elastic material. The first and / or second protruding structures made of elastic materials have a certain elastic deformation capability, and the first protruding structure can be tightly bonded to the second protruding structures of other heat insulation pads by elastic deformation, thereby improving the heat insulation pad's flow-blocking effect on the structural adhesive.

[0017] In some embodiments of this application, the elastic material includes at least one of rubber, silicone, and soft plastic.

[0018] A second aspect of this application provides a battery including a heat insulation pad as proposed in this application or any embodiment thereof, the battery further including a plurality of battery cells, wherein the heat insulation pad is disposed between the plurality of battery cells.

[0019] In addition, the battery according to this application may also have the following additional technical features:

[0020] The plurality of battery cells are arranged in at least two rows along the second direction, and each row of battery cells has at least two battery cells arranged sequentially along the third direction. Any two adjacent battery cells in the second direction and the two adjacent battery cells in the third direction form a gap between them. The second direction intersects with the third direction.

[0021] The battery cells in two adjacent rows of the at least two rows are connected by a plurality of the heat insulation pads, and the first protruding structure is disposed in the corresponding pore.

[0022] A third aspect of this application provides an electrical device comprising a battery as described in this application or any embodiment thereof, the battery being used to provide electrical energy.

[0023] The batteries and electrical devices proposed in this application all include the heat insulation pads proposed in this application or any embodiment of this application, and at least have the beneficial effects of the heat insulation pads proposed in this application or any embodiment of this application.

[0024] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0026] Figure 1 The schematic diagram illustrates the structural features of a vehicle provided in some embodiments of this application;

[0027] Figure 2 An exploded view of a battery according to some embodiments of this application is shown schematically;

[0028] Figure 3 An exploded view of a battery cell according to some embodiments of this application is shown schematically.

[0029] Figure 4 A schematic diagram of a heat insulation pad according to some embodiments of this application is shown;

[0030] Figure 5 A schematic diagram of a portion of the battery structure according to some embodiments of this application is shown.

[0031] Figure 6 schematically shown Figure 5 A magnified view of a portion of the image;

[0032] Figure 7 A schematic diagram illustrating the assembly of two heat insulation pads according to some embodiments of this application is shown.

[0033] Figure 8 A schematic diagram illustrating the assembly of two heat insulation pads according to some embodiments of this application is shown.

[0034] The reference numerals in the detailed embodiments are as follows:

[0035] 1000, vehicles;

[0036] 100. Battery; 110. Controller; 300. Motor;

[0037] 10. Box body; 11. First part; 12. Second part;

[0038] 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Cell assembly; 23a. Tab;

[0039] 30. Pores;

[0040] 200. Heat insulation pad;

[0041] 230. Insulation pad body; 231. First sidewall; 232. Second sidewall; 233. First surface;

[0042] 210. First protruding structure; 211. First abutting part;

[0043] 220. Second protruding structure; 221. Second abutting part;

[0044] X, first direction; Y, second direction; Z, third direction; α, included angle. Detailed Implementation

[0045] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0047] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0048] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0050] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0051] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0052] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0053] When battery cells are assembled into the battery casing, structural adhesive can be used for fixation. In some technologies, the battery includes multiple rows of battery cells, such as dual-row module batteries. In such batteries with multiple rows of battery cells, gaps can easily form between the corners of the battery cells and the corners of adjacent cells. In this case, structural adhesive can easily overflow from the fixed end of the battery cell through these gaps to the other end of the battery cell. The other end of the battery cell usually has components such as electrode terminals. The structural adhesive flowing to the other end of the battery cell can easily cause contamination of the electrode terminals, leading to solder joint bursts. Furthermore, after the structural adhesive cures, it can push up the wire harness separator plate, causing poor solder joints.

[0054] To mitigate the aforementioned impacts of structural adhesive overflow, manual cleaning is typically required when overflow is discovered. This process is difficult, time-consuming, and labor-intensive.

[0055] Thermal insulation pads are commonly used components in batteries. They can be placed between two adjacent battery cells to provide thermal insulation and insulation. When one battery cell experiences thermal runaway, the thermal insulation pad can reduce the impact of thermal runaway on adjacent battery cells.

[0056] Based on the setting of the heat insulation pad, in order to alleviate the problem of structural adhesive overflow, this application proposes a heat insulation pad, including a heat insulation pad body and a first protruding structure having a first surface with the largest area and a first sidewall connected to the first surface. The first protruding structure is fixedly connected to the first sidewall and protrudes from the first sidewall.

[0057] When battery cells are arranged in multiple rows, heat insulation pads are placed between adjacent rows of battery cells. Each heat insulation pad connected to a battery cell is adjacent to the heat insulation pad connected to the adjacent battery cell in the same row. That is, in the same row, the corners of two adjacent battery cells correspond to the connection points of two heat insulation pads. By setting a first protruding structure on the heat insulation pad, a flow-blocking structure can be formed at the adjacent positions of two heat insulation pads. This flow-blocking structure is also located in the corner area of ​​adjacent battery cells. Due to the flow-blocking structure, it is more difficult for structural adhesive to overflow from the corner area of ​​adjacent battery cells, thereby reducing the possibility of structural adhesive overflowing from the fixed end of the battery cell to the other end, reducing the possibility of structural adhesive contaminating the electrode terminals or lifting the wiring harness plate, and improving battery quality. Furthermore, because the possibility of structural adhesive overflow is reduced, the manual cleaning steps of structural adhesive can be saved, reducing labor intensity and improving assembly efficiency.

[0058] The battery cells disclosed in this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system comprising the battery cells and batteries disclosed in this application can be used to power the electrical device.

[0059] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0060] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0061] Please refer to Figure 1 , Figure 1The schematic diagram illustrates the structure of a vehicle provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 110 and a motor 300. The controller 110 is used to control the battery 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0062] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0063] Please refer to Figure 2 , Figure 2 An exploded view of a battery according to some embodiments of this application is schematically shown. The battery 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 provides a space for the battery cell 20 and can have various structures. In some embodiments, the housing 10 may include a first portion 11 and a second portion 12, which overlap each other, jointly defining a space for accommodating the battery cell 20. The second portion 12 may be a hollow structure with one open end, and the first portion 11 may be a plate-like structure, covering the open side of the second portion 12 so that the first portion 11 and the second portion 12 jointly define the space. Alternatively, the first portion 11 and the second portion 12 may both be hollow structures with one open side, with the open side of the first portion 11 covering the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder, a cuboid, etc.

[0064] In battery 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, battery 100 can also be composed of multiple battery cells 20 first connected in series, parallel, or in a mixed manner to form a battery module, and then multiple battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the housing 10. Battery 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0065] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0066] Please refer to Figure 3 , Figure 3 The diagram schematically illustrates an exploded view of a battery cell provided in some embodiments of this application, where battery cell 20 refers to the smallest unit that makes up a battery. Figure 3 As shown, the battery cell 20 includes an end cap 21, a housing 22, a cell assembly 23, and other functional components.

[0067] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, allowing battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with cell assembly 23 to output or input electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0068] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the cell assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the cell assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0069] The cell assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 22 may contain one or more cell assemblies 23. The cell assembly 23 is mainly formed by winding or stacking positive and negative electrode plates, and typically a separator is provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the cell assembly, while the portions of the positive and negative electrode plates without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals to form a current loop.

[0070] According to some embodiments of this application, such as Figure 4 As shown, Figure 4 The schematic diagram illustrates a heat insulation pad according to some embodiments of this application. This application proposes a heat insulation pad 200, including a heat insulation pad body 230 and a first protruding structure 210. The heat insulation pad body 230 has a first surface 233 with the largest area and a first sidewall 231 connected to the first surface 233; the first protruding structure 210 is fixedly connected to the first sidewall 231 and protrudes from the first sidewall 231.

[0071] The heat insulation pad body 230 is a plate-shaped or sheet-shaped component with heat insulation and electrical insulation functions. The heat insulation pad body 200 may include a heat insulation core and a rubber frame. The heat insulation core is located at the center of the heat insulation pad body 200 and plays a role in heat insulation and buffering. The rubber frame is located around the heat insulation core and plays a role in sealing and shaping. Optionally, an encapsulation film can be attached to the first surface 233 and the surface opposite to the first surface 233 of the heat insulation pad body 230. The encapsulation film is used for overall encapsulation and also has the functions of vacuuming and increasing the flatness of the pad.

[0072] The shape of the heat insulation pad body 230 matches the shape of the battery cell 20, specifically the surface of the battery cell 20 that contacts the heat insulation pad 200. For example, in some square batteries 100, the surface of the battery cell 20 that contacts the heat insulation pad 200 is rectangular, and the corresponding shape of the heat insulation pad body 230 is also processed into a rectangle. The first surface 233 is the surface of the heat insulation pad 200 used to connect with the surface of the battery cell 20. The first surface 233 can be designed to be the same size or substantially the same size as the corresponding surface of the battery cell 20, so that the heat insulation pad 200 can better cover the corresponding surface of the battery cell 20 and provide better heat insulation for the battery 100. The first sidewall 231 is one of the sidewalls of the heat insulation pad body 230, which is connected to the edge of the first surface 233. Specifically, the first sidewall 231 can be a sidewall that extends from the top surface to the bottom surface of the battery cell 20. That is, when the heat insulation pad 200 is assembled into the battery, when it is assembled into the battery 100, the first sidewall 231 is a sidewall of the heat insulation pad 200 that extends from the top surface to the bottom surface of the battery cell 20. When there are multiple heat insulation pads, the first sidewall 231 can be used to be adjacent to and connected to the sidewalls of other adjacent heat insulation pads.

[0073] The first protruding structure 210 is a structure that protrudes relative to the heat insulation pad body 230. Specifically, it can be a structure that protrudes from a local position of the first sidewall 231 away from the center of the heat insulation pad body 230, or it can be a protruding structure connected to a local position of the first sidewall 231. In other words, the first protruding structure 210 can be integrally formed with the heat insulation pad body 230, or it can be connected to the first sidewall 231 of the heat insulation pad body 230 through secondary processing, such as bonding. The first protruding structure 210 can be configured to have insulating or heat-insulating properties to further improve the heat insulation performance of the heat insulation pad 200. The material of the first protruding structure 210 can be a rigid material or a flexible soft material such as rubber.

[0074] like Figure 5 and Figure 6 As shown, Figure 5 The diagram schematically illustrates a partial structural diagram of a battery according to some embodiments of this application. Figure 6 schematically shown Figure 5The enlarged view shows that in some batteries, the battery cells 20 can be arranged in at least two rows, with each row containing two or more battery cells 20. The casing 22 of the battery cell 20 can be square, with the corners connected by rounded corners (R-corners). In actual assembly, the sides of two battery cells 20 can be glued together using an adhesive heat insulation pad 200 to form a small unit. Then, the larger surfaces of the battery cells 20 are glued together using the adhesive heat insulation pad. The R-corners between adjacent small units form a "capillary," meaning that a pore 30 is formed between the rounded corners of the battery cells 20 and the adjacent battery cells 20. Structural adhesive overflow is prone to occur at these pores 30.

[0075] In the technical solution of this application embodiment, when assembling the battery 100, a heat insulation pad 200 can be placed between two adjacent battery cells 20 to provide heat insulation and improve the safety of the battery 100. When the battery 100 is assembled with multiple rows of battery cells 20, the first protruding structure 210 can be disposed in the pores 30 formed in the corner areas of adjacent battery cells 20 and form a flow-blocking structure, thereby reducing the probability of structural adhesive flowing from one end of the battery cell 20 along the pores 30 between the battery cells 20 to the other end of the battery cell 20, and reducing the possibility of quality problems in the battery 100 due to structural adhesive overflow.

[0076] Optionally, according to some embodiments of this application, reference may continue to be made to... Figure 4 As shown, at least two first protruding structures 210 are provided, and all first protruding structures 210 are arranged at intervals.

[0077] Specifically, the first protruding structure 210 can be arranged at intervals along the extension direction of the first sidewall 231. Multiple first protruding structures 210 can be arranged at equal intervals or at unequal intervals.

[0078] In this embodiment, by setting multiple first protruding structures 210, a recess is formed between the multiple first protruding structures 210. When the structural adhesive overflows from the fixed end of the battery cell 20 to the other end, it can be stopped by the multiple first protruding structures 210. Furthermore, since the first protruding structures 210 and the adjacent recesses extend the overflow path of the structural adhesive and increase the difficulty of overflowing the structural adhesive, the overflow prevention effect of the structural adhesive is improved.

[0079] Optionally, according to some embodiments of this application, reference may continue to be made to... Figure 4 As shown, the heat insulation pad 200 may also include a second protruding structure 220, and the heat insulation pad body 230 may also have a second sidewall 232 connected to the first surface 233. The second sidewall 232 and the first sidewall 231 are disposed opposite to each other, and the second protruding structure 220 is fixedly connected to the second sidewall 232 and protrudes from the second sidewall 232.

[0080] The second sidewall 232 is the sidewall of the heat insulation pad body 230, which is connected to the edge of the first surface 233 and located on the opposite side of the first sidewall 231.

[0081] The second protruding structure 220 is a structure that protrudes relative to the heat insulation pad body 230. Specifically, it can be a structure that protrudes from a local location on the second sidewall 232 away from the center of the heat insulation pad body 230, or it can be a protruding structure connected to a local location on the second sidewall 232. In other words, the second protruding structure 220 can be integrally formed with the heat insulation pad body 230, or it can be connected to the second sidewall 232 of the heat insulation pad body 230 through secondary processing, such as bonding. The second protruding structure 220 can be configured to have insulating or heat-insulating properties to further improve the heat insulation performance of the heat insulation pad 200. The material of the second protruding structure 220 can be a rigid material or a flexible soft material such as rubber. The second protruding structure 220 and the first protruding structure 210 can have the same structure or different structures.

[0082] The first protruding structure 210 and the second protruding structure 220 are located on opposite sides of the heat insulation pad body 230, so that both ends of the heat insulation pad 200 have anti-overflow adhesive properties. In this way, when the heat insulation pad 200 is connected to other heat insulation pads 200, the first protruding structure 210 of the heat insulation pad 200 can cooperate with the second protruding structure 220 of the adjacent heat insulation pad 200 to improve the anti-overflow adhesive properties of the heat insulation pad 200.

[0083] Optionally, according to some embodiments of this application, reference may continue to be made to... Figure 4 As shown, at least two second protrusions 220 are provided, and all second protrusions 220 are arranged at intervals.

[0084] Specifically, the second protruding structures 220 can be arranged at intervals along the extension direction of the second sidewall 232. Multiple second protruding structures 220 can be arranged at equal intervals or at unequal intervals.

[0085] In this embodiment, by setting multiple second protruding structures 220, a recess is formed between the multiple second protruding structures 220. When the structural adhesive overflows from the fixed end of the battery cell 20 to the other end, it can be stopped by the multiple second protruding structures 220. Furthermore, since the second protruding structures 220 and the adjacent recesses extend the overflow path of the structural adhesive and increase the difficulty of overflowing the structural adhesive, the overflow prevention effect of the structural adhesive is improved.

[0086] Optionally, according to some embodiments of this application, reference may continue to be made to... Figure 4 and combined Figure 7 As shown, Figure 7The schematic diagram illustrates the connection of two heat insulation pads according to some embodiments of this application. The first protruding structure 210 has a first abutting portion 211, and the second protruding structure 220 has a second abutting portion 221. The first abutting portion 211 is used to abut against the second abutting portion 221 in other heat insulation pads 200.

[0087] The first abutting portion 211 may be a partial location of the first protruding structure 210, and the second abutting portion 221 may be a partial location of the second protruding structure 220. When the first abutting portion 211 and the second abutting portion 221 abut, they may abut against each other in a face-to-face manner.

[0088] In this embodiment, by providing a first abutting part 211 and abutting part 221, the heat insulation pad 200 can abut against and cooperate with the adjacent heat insulation pad 200, thereby enhancing the flow-blocking effect of the heat insulation pad 200 on the structural adhesive.

[0089] Optionally, according to some embodiments of this application, reference may continue to be made to... Figure 4 and Figure 7 As shown, the first protruding structure 210 and the second protruding structure 220 are staggered so that the first abutting portion 211 abuts against the second abutting portion 221 in other heat insulation pads 200.

[0090] The first protruding structure 210 and the second protruding structure 220 are staggered, so that the first abutting part 211 can abut between two adjacent second abutting parts 221 of other heat insulation pads 200, and the second abutting part 221 can abut between two adjacent first abutting parts 211 of other heat insulation pads 200, which facilitates the assembly and cooperation of adjacent heat insulation pads 200 and can improve the flow resistance effect on structural adhesive.

[0091] According to some embodiments of this application, optionally, the first protruding structure 210 protrudes from the first sidewall 231 along the first direction X, and the second protruding structure 220 protrudes from the second sidewall 232 in the opposite direction to the first direction X.

[0092] Wherein, the first direction X can be the direction intersecting the extension direction of the first sidewall 231. The first protruding structure 210 protrudes along the first direction X, and the second protruding structure 220 protrudes in the opposite direction of the first direction X, so that the extension direction of the first protruding structure 210 is parallel to that of the second protruding structure 220 of the other heat insulation pads 200. This facilitates the assembly between the heat insulation pads 200 and other heat insulation pads 200, and is conducive to the surface-to-surface contact between the first protruding structure 210 and the second protruding structure 220, thereby improving the flow resistance effect of the structural adhesive.

[0093] According to some embodiments of this application, optionally, the first direction X and the first sidewall 231 form an acute angle.

[0094] The angle α between the first direction X and the first sidewall 231 can be 30 degrees, 45 degrees, 60 degrees, etc.

[0095] By setting the first direction X at an acute angle to the first sidewall 231, the first protruding structure 210 is inclined relative to the first sidewall 231, and the second protruding structure 220 is inclined relative to the second sidewall 232, which facilitates the contact and cooperation between the first protruding structure 210 and the second protruding structure 220 of other heat insulation pads 200.

[0096] According to some embodiments of this application, optionally, reference is made to... Figure 8 As shown, Figure 8 The schematic diagram illustrates an assembly of two heat insulation pads according to some embodiments of this application. The surface of the first protruding structure 210 facing away from the first sidewall 231 is an arc surface, and the opening of the arc surface faces the first sidewall 231. The surface of the second protruding structure 220 facing away from the second sidewall 232 is an arc surface, and the opening of the arc surface faces the second sidewall 232.

[0097] Specifically, the first protruding structure 210 can be a hemispherical structure, with the circular surface of the hemispherical structure connected to the first sidewall 231. The second protruding structure 220 can also be a hemispherical structure, with the circular surface of the hemispherical structure connected to the second sidewall 232.

[0098] The curved first protrusion 210 and second protrusion 220 are more aesthetically pleasing, and the assembly operation is more convenient when the first protrusion 210 and the second protrusion 220 of the two heat insulation pads 200 are connected.

[0099] According to some embodiments of this application, optionally, the first protrusion 210 is made of an elastic material; and / or, the second protrusion 220 is made of an elastic material.

[0100] The first protruding structure 210 can be made of materials such as rubber or plastic. The first protruding structure 210 can be integrally constructed with the heat insulation pad body 230. For example, the first protruding structure 210 can be integrally formed with the rubber frame.

[0101] The second protruding structure 220 can be made of materials such as rubber or plastic. The second protruding structure 220 can be integrally constructed with the heat insulation pad body 230. For example, the second protruding structure 220 can be integrally formed with the rubber frame.

[0102] The first protruding structure 210 and / or the second protruding structure 220 made of elastic material have a certain elastic deformation capability. The first protruding structure 210 and the second protruding structure 220 of other heat insulation pads 200 can be tightly bonded by elastic deformation, which improves the flow resistance effect of the heat insulation pads 200 on the structural adhesive.

[0103] According to some embodiments of this application, the elastic material may optionally include at least one of rubber, silicone, and soft plastic.

[0104] Some embodiments of this application also propose a battery 100, including a plurality of battery cells 20 and a heat insulation pad 200 as proposed in this application or embodiments thereof. The plurality of battery cells 20 are connected to each other via the heat insulation pad 200.

[0105] According to some embodiments of this application, optionally, reference is made to... Figure 5 and Figure 6 As shown, multiple battery cells 20 are arranged in at least two rows along the second direction Y. Each row of battery cells 20 has at least two battery cells 20, and at least two battery cells 20 in each row are arranged along the third direction Z. A gap 30 is formed between two adjacent battery cells 20 in the second direction Y and two adjacent battery cells 20 in the third direction Z. The second direction Y intersects with the third direction. The battery cells 20 in two adjacent rows of at least two rows are connected by multiple heat insulation pads 200, and the first protruding structure 210 is disposed in the corresponding gap 30.

[0106] In this context, the second direction Y and the third direction Z are both the arrangement directions of the battery cells 20. Specifically, the second direction Y and the third direction Z can both be parallel to the bottom surface of the housing 10 of the battery 100, and the second direction Y and the third direction Z are set perpendicular to each other.

[0107] According to some embodiments of this application, some embodiments of this application also provide an electrical device, including the battery 100 described in any of the above embodiments, and the battery 100 is used to provide electrical energy to the electrical device.

[0108] The electrical device can be any of the aforementioned devices or systems that use battery 100.

[0109] According to some embodiments of this application, such as Figure 4 to Figure 7As shown, this embodiment proposes a heat insulation pad 200, including a heat insulation pad body 230, a first protruding structure 210, and a second protruding structure 220. The heat insulation pad body 230 includes a first surface 233 with the largest area, a first sidewall 231 connected to the first surface 233, and a second sidewall 232 opposite to the first sidewall 231. The first protruding structure 210 is fixedly connected to the first sidewall 231 and protrudes from the first sidewall 231. At least two first protruding structures 210 are provided, and all first protruding structures 210 are arranged at intervals. The second protruding structure 220 is fixedly connected to the second sidewall 232 and protrudes from the second sidewall 232. At least two second protruding structures 220 are provided, and all second protruding structures 220 are arranged at intervals. The first protruding structure 210 has a first abutting portion 211, and the second protruding structure 220 has a second abutting portion 221. The first abutting portion 211 is used to abut against the second abutting portions 221 of other heat insulation pads 200. The first protruding structure 210 and the second protruding structure 220 are staggered so that the first abutting portion 211 can abut against the second abutting portions 221 of other heat insulation pads 200. The first protruding structure 210 protrudes from the first sidewall 231 along a first direction X, and the second protruding structure 220 protrudes from the second sidewall 232 along the opposite direction of the first direction X. There is an acute angle between the first direction X and the first sidewall 231. The first protruding structure 210 is made of an elastic material; the second protruding structure 220 is made of an elastic material.

[0110] In this embodiment, the heat insulation pad 200 is augmented with a first protruding structure 210 and a second protruding structure 220. When battery cells are assembled, adjacent heat insulation pads 200 are staggered. Figure 7 As shown, the first protruding structure 210 and the second protruding structure 220 form a barrier channel to prevent glue overflow at the R-corner.

[0111] According to some embodiments of this application, such as Figure 8As shown, this embodiment proposes a heat insulation pad, including a heat insulation pad body 230, a first protruding structure 210, and a second protruding structure 220. The heat insulation pad body 230 includes a first surface 233 with the largest area, a first sidewall 231 connected to the first surface 233, and a second sidewall 232 opposite to the first sidewall 231. The first protruding structure 210 is fixedly connected to the first sidewall 231 and protrudes from the first sidewall 231. At least two first protruding structures 210 are provided, and all first protruding structures 210 are arranged at intervals. The second protruding structure 220 is fixedly connected to the second sidewall 232 and protrudes from the second sidewall 232. At least two second protruding structures 220 are provided, and all second protruding structures 220 are arranged at intervals. The first protruding structure 210 has a first abutting portion 211, and the second protruding structure 220 has a second abutting portion 221. The first abutting portion 211 is used to abut against the second abutting portions 221 of other heat insulation pads 200. The first protruding structure 210 and the second protruding structure 220 are staggered so that the first abutting portion 211 can abut against the second abutting portion 221 of other heat insulation pads 200. The surface of the first protruding structure 210 facing away from the first sidewall 231 is an arc surface, and the opening of the arc surface faces the first sidewall 231; the surface of the second protruding structure 220 facing away from the second sidewall 232 is an arc surface, and the opening of the arc surface faces the second sidewall 232.

[0112] In this embodiment, the heat insulation pad 200 is augmented with an arc-shaped first protrusion 210 and a second protrusion 220. When the battery cells 20 are assembled, adjacent heat insulation pads 200 interlock with each other, such as... Figure 8 As shown, the first protruding structure 210 and the second protruding structure 220 form a barrier channel to prevent glue overflow at the R-corner.

[0113] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that, include: Heat insulation pad; Multiple battery cells, with the heat insulation pad disposed between the multiple battery cells. The heat insulation pad includes: The heat insulation pad body has a first surface with the largest area and a first sidewall connected to the first surface; A first protruding structure is fixedly connected to the first sidewall and protrudes from the first sidewall; The second protruding structure, the heat insulation pad body also has a second sidewall connected to the first surface, the second sidewall and the first sidewall are disposed opposite to each other, and the second protruding structure is fixedly connected to the second sidewall and protrudes from the second sidewall; The first protruding structure has a first abutting portion, and the second protruding structure has a second abutting portion, wherein the first abutting portion abuts against the second abutting portion of the adjacent heat insulation pad; The first protruding structure is configured as at least two, and all the first protruding structures are arranged at intervals. A recess is formed between adjacent first protruding structures. When the structural adhesive overflows from the fixed end of the battery cell to the other end, it is blocked by the second protruding structure and multiple first protruding structures. The first protruding structure and the adjacent recess form the overflow path of the structural adhesive. The plurality of battery cells are arranged in at least two rows along the second direction, and each row of battery cells has at least two battery cells arranged sequentially along the third direction. Any two adjacent battery cells in the second direction and the two adjacent battery cells in the third direction form a gap between the two adjacent battery cells in the third direction. The second direction intersects with the third direction. The battery cells in two adjacent rows of at least two rows are connected by a plurality of heat insulation pads, and the first protruding structure is disposed in the corresponding gap.

2. The battery according to claim 1, characterized in that, The second protruding structure is configured as at least two, and all the second protruding structures are arranged at intervals.

3. The battery as described in claim 1 or 2, characterized in that, The first protruding structure and the second protruding structure are staggered so that the first abutting portion can abut against the second abutting portion in the adjacent heat insulation pad.

4. The battery as described in claim 3, characterized in that, The first protruding structure protrudes from the first sidewall along a first direction, and the second protruding structure protrudes from the second sidewall in the opposite direction to the first direction.

5. The battery as described in claim 4, characterized in that, The first direction and the first sidewall form an acute angle.

6. The battery as described in claim 3, characterized in that, The surface of the first protruding structure facing away from the first sidewall is an arc surface, and the opening of the arc surface faces the first sidewall; The surface of the second protruding structure facing away from the second sidewall is an arc surface, and the opening of the arc surface faces the second sidewall.

7. The battery as described in claim 1 or 2, characterized in that, The first protruding structure is made of an elastic material; and / or, the second protruding structure is made of an elastic material.

8. The battery as claimed in claim 7, characterized in that, The elastic material includes at least one of rubber, silicone, and soft plastic.

9. An electrical device, characterized in that, Includes the battery according to any one of claims 1 to 8, the battery being used to provide electrical energy.

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