Battery pack and electric device

Abstract

The embodiment of the utility model discloses a battery pack and a power utilization device, the battery pack has a first direction, a second direction and a third direction which are intersected pairwise, and the battery pack comprises a box body with an accommodating cavity; the plurality of single batteries are arranged in the accommodating cavity; the side plate is arranged on one side of the single battery in the second direction; the glue blocking element is arranged between the side plate and the single battery and is positioned on at least one side of the single battery along the third direction, the glue blocking element comprises a glue blocking strip and a plurality of glue blocking convex parts, the glue blocking strip is arranged on the side plate and extends along the first direction, the plurality of glue blocking convex parts are arranged on one side, far away from the side plate, of the glue blocking strip, and the glue blocking convex parts extend along the second direction. And the glue blocking convex parts are at least partially arranged between two adjacent single batteries in the first direction. According to the battery pack, the glue blocking convex parts are arranged between the side plates and the single batteries, so that the influence of a glue overflowing problem on the assembly of the battery pack is eliminated, the assembly yield of the battery pack is improved, and the assembly efficiency of the battery pack is improved.

Description

Technical Field

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

[0002] With the rapid development of the new energy industry, battery packs with high energy density, high cycle life and high safety performance have been widely used and developed. At the same time, the demand for battery packs with larger capacity, more durability and longer battery life has increased. The output of battery packs is related to the assembly yield of battery packs. Therefore, how to improve the assembly yield of battery packs has become an urgent problem to be solved. Utility Model Content

[0003] Embodiments of the present application provide a battery pack and an electrical device to improve the assembly yield of the battery pack.

[0004] In order to solve the above technical problems, the embodiments of the present application disclose the following technical solutions:

[0005] In one aspect, a battery pack is provided, having a first direction, a second direction and a third direction intersecting in pairs, comprising: a box body, the box body having a receiving cavity;

[0006] A plurality of single cells, wherein the plurality of single cells are arranged in the accommodation cavity; and

[0007] a side plate, disposed on one side of the single battery in the second direction; and

[0008] A rubber blocking element is arranged between the side plate and the single cell and is located on at least one side of the single cell along the third direction. The rubber blocking element includes: a rubber blocking strip and a rubber blocking protrusion. The rubber blocking strip is arranged on the side plate and extends along the first direction. A plurality of the rubber blocking protrusions are arranged on a side of the rubber blocking strip away from the side plate, and the rubber blocking protrusion is arranged between two adjacent single cells in the first direction.

[0009] In addition to or as an alternative to one or more of the features disclosed above, the single battery has first side walls opposite to each other in the first direction, and second side walls opposite to each other in the second direction, the second side walls being connected between two of the first side walls;

[0010] The glue blocking protrusion is at least partially disposed between the first side walls of two adjacent single cells; and / or,

[0011] The glue blocking protrusion is at least partially disposed between the second side walls of two adjacent single batteries.

[0012] In addition to or as an alternative to one or more of the features disclosed above, a chamfered portion is provided at a connection between the first side wall and the second side wall;

[0013] The adhesive blocking protrusion is at least partially disposed between the chamfered portions of two adjacent single cells, and the adhesive blocking protrusion fits the chamfered portions. The adhesive blocking protrusion is configured to block the adhesive between the side plate and the single cells from overflowing from the chamfered portions.

[0014] In addition to or as an alternative to one or more of the features disclosed above, a plurality of the glue blocking protrusions are arranged at intervals in the first direction, and each of the glue blocking protrusions is disposed between the chamfered portions of two adjacent single battery cells.

[0015] In addition to or as an alternative to one or more of the features disclosed above, the rubber blocking protrusion and the rubber blocking strip are integrally formed; or,

[0016] The rubber blocking protrusion is fixedly connected to the rubber blocking strip.

[0017] In addition to or as an alternative to one or more of the features disclosed above, the battery pack further has a reference plane perpendicular to the third direction;

[0018] The orthographic projection of the rubber-blocking protrusion on the reference plane is in any one or more of the shapes of a triangle, a trapezoid or a circular arc.

[0019] In addition to or as an alternative to one or more of the features disclosed above, the side panel has a first end and a second end that are arranged opposite to each other along the third direction,

[0020] A plurality of the rubber blocking strips are arranged at intervals along the third direction, wherein two of the rubber blocking strips are arranged at the first end and the second end respectively.

[0021] In addition to one or more of the features disclosed above, or as an alternative, the glue blocking element further includes: a connecting portion, which extends in the third direction and connects the glue blocking protrusions on two adjacent glue blocking strips along the third direction.

[0022] In addition to one or more of the features disclosed above, or as an alternative, the glue blocking element also includes: a plurality of return frames, wherein the return frames are arranged between the single cells and the side panels, and the return frames, the single cells and the side panels surround and form a glue blocking space, and the glue blocking space is filled with adhesive.

[0023] On the other hand, an electrical device is further disclosed. In addition to or instead of one or more of the features disclosed above, the electrical device includes a battery pack as described in any one of the above items, and the battery pack serves as a power supply for the electrical device.

[0024] One of the above technical solutions has the following advantages or beneficial effects: in the present application, a plurality of glue blocking protrusions are provided on the glue blocking strip, and the glue blocking protrusions are at least partially arranged between two adjacent single cells, so as to utilize the glue blocking protrusions to block the adhesive between the side plate and the single cell from overflowing to the top and / or bottom of the single cell, so as to eliminate the influence of the glue overflow problem on the assembly of the battery pack, improve the assembly yield of the battery pack, and improve the assembly efficiency of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0026] Figure 1 is a three-dimensional exploded view of a battery pack provided according to an embodiment of the present application;

[0027] Figure 2 It is a three-dimensional exploded view of the side plate, the single battery and the rubber stopper element provided according to the specific embodiment 1 of the present application;

[0028] Figure 3 It is a top view of the side plate, the single battery and the rubber stopper element provided according to the specific embodiment 1 of the present application;

[0029] Figure 4 is a three-dimensional structural diagram of a single cell provided according to an embodiment of the present application;

[0030] Figure 5 is a top view of the side plate and the rubber retaining element provided according to the first specific embodiment of the present application;

[0031] Figure 6 It is a front view of the side plate and the rubber retaining element provided according to the second specific embodiment of the present application;

[0032] Figure 7 It is a three-dimensional exploded view of the side plate, the single battery and the rubber stopper element provided according to the specific embodiment 3 of the present application;

[0033] Figure 8 It is a three-dimensional structural diagram of a single cell provided according to the specific embodiment 3 of the present application.

[0034] Description of reference numerals:

[0035] 100. Battery pack;

[0036] 110. box body; 111. accommodating chamber;

[0037] 120, side panel; 121, first end; 122, second end;

[0038] 130, single cell; 131, first side wall; 132, second side wall; 133, chamfered portion;

[0039] 140, rubber blocking element; 141, rubber blocking strip; 142, rubber blocking convex part; 143, connecting part; 144, return frame; 1441, rubber blocking space;

[0040] 150. Top cover. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and beneficial effects of this application more clear, the following further describes this application in detail in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining this application, not for limiting this application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] The existing battery pack is composed of components such as batteries and side panels. The side panels are glued on the surface and bonded to the batteries to form a battery pack. However, the battery is wound and processed, and there are chamfers at the connection of the two side walls. The existing side panel glue strips are straight strips, which cannot well block the overflow of glue at the circular chamfers, causing the glue to overflow from the chamfers to the fixed tooling and other positions. After the glue solidifies, the battery is bonded to the fixed tooling. After the battery pack is assembled, it is easy to cause the blue film of the battery to be damaged or affect the bottom flatness of the battery pack when the battery is separated from the fixed tooling, affecting the assembly yield of the battery pack.

[0046] In order to solve the above problems, in the embodiments of the present application, please refer to Figures 1 to 8 The present application provides a battery pack 100, which has a first direction X, a second direction Y and a third direction Z intersecting in pairs. Preferably, the battery pack 100 has a first direction X, a second direction Y and a third direction Z that are perpendicular to each other in pairs.

[0047] Here, “perpendicular” refers to a state where the angle formed by straight lines, straight lines and planes, or planes and planes is 89° to 91°.

[0048] The battery pack may be a three-layer battery pack of single cell-battery module-battery pack, or a module-free battery pack of two layers of single cell-battery pack.

[0049] Specifically, the battery pack 100 may include: a box body 110 , a single battery 130 , a side plate 120 , a rubber stopper element 140 and an upper cover 150 .

[0050] The above-mentioned box body 110 has a accommodating cavity 111, and the above-mentioned single cell 130 is provided with a plurality of single cells 130, and the plurality of single cells 130 are arranged in the accommodating cavity 111. The above-mentioned side plate 120 is arranged on one side of the single cell 130 in the second direction Y. The above-mentioned glue blocking element 140 is arranged between the side plate 120 and the single cell 130, and is located on at least one side of the single cell 130 along the third direction Z. The glue blocking element 140 is configured to prevent the adhesive between the side plate 120 and the single cell 130 from overflowing from between two adjacent single cells 130. The above-mentioned upper cover 150 is connected to the box body 110.

[0051] The above-mentioned single battery 130 may be a lithium-ion battery, or a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.

[0052] The above-mentioned single battery 130 can also be cylindrical, flat, rectangular or other shapes.

[0053] Among them, the above-mentioned single cell 130 may include an electrode assembly, an electrolyte, a shell, an end cap, a pole and other functional components. Among them, the electrode assembly is a component in the single cell 130 where an electrochemical reaction occurs, and the electrode assembly may be one or more. The electrode assembly is mainly formed by winding a positive electrode sheet, a separator and a negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active substances constitute the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active substances each constitute a pole ear. During the charge and discharge process of the single cell 130, the positive electrode active substance and the negative electrode active substance react with the electrolyte, and the pole ear is connected to the pole to form a current loop.

[0054] The rubber blocking element 140 may be directly disposed on the side plate 120 or directly disposed on the single battery 130 . This is not specifically limited in the present application and may be specifically disposed according to actual circumstances.

[0055] Among them, during the preparation process of the above-mentioned battery pack 100, multiple single batteries 130 can be first arranged side by side to form a battery group, and then a certain pressure is applied in the first direction X to squeeze the battery group to a required length, and then a certain amount of adhesive is coated on the surface of the side panel 120, and the side panel 120 is bonded to the two ends of the battery group in the second direction Y. After waiting for the adhesive to have a certain initial solid strength, the battery group bonded with the side panel 120 is assembled into the box body 110, and then the upper cover 150 is connected to the box body 110.

[0056] In the specific embodiment 1 of the present application: please refer to Figures 2 to 5The above-mentioned glue blocking element 140 includes: a glue blocking strip 141 and a plurality of glue blocking protrusions 142. The above-mentioned glue blocking strip 141 is arranged on the above-mentioned side plate 120, and the above-mentioned glue blocking strip 141 extends along the first direction X; the above-mentioned plurality of glue blocking protrusions 142 are arranged on a side of the glue blocking strip 141 away from the side plate 120, and the above-mentioned glue blocking protrusions 142 extend along the second direction Y. The glue blocking protrusion 142 is arranged between two adjacent single batteries 130 in the first direction X. The glue blocking protrusion 142 is configured to prevent the adhesive between the side plate 120 and the single battery 130 from overflowing from between the two adjacent single batteries 130.

[0057] The rubber strip 141 can be integrally formed with the side panel 120, or can be fixedly connected to the surface of the side panel 120, for example, the rubber strip 141 is bonded to the surface of the side panel 120 by adhesive, but is not limited thereto. This application does not make any specific limitation, as long as it does not affect the effect of this application.

[0058] The above-mentioned rubber blocking protrusion 142 can be integrally formed with the rubber blocking strip 141, and the above-mentioned rubber blocking protrusion 142 can also be fixedly connected to the above-mentioned rubber blocking strip 141, for example, the above-mentioned rubber blocking protrusion 142 is bonded to the surface of the above-mentioned rubber blocking strip 141 with adhesive, but it is not limited thereto. This application does not make specific limitations, as long as it does not affect the effect of this application.

[0059] The rubber blocking strip 141 and the rubber blocking protrusion 142 are both made of flexible materials. Specifically, for example, the rubber blocking strip 141 and the rubber blocking protrusion 142 can be made of foam, or rubber, but not limited thereto, so that the rubber blocking strip 141 and the rubber blocking protrusion 142 are in close contact with the single battery 130, thereby improving the rubber blocking effect of the rubber blocking strip 141 and the rubber blocking protrusion 142.

[0060] It is understandable that when the battery pack 100 in the present application is assembled, it is necessary to apply adhesive between the side panel 120 and the single cell 130 to bond the two together. However, since there may be a gap between two adjacent single cells 130, the adhesive may overflow from the gap between two adjacent single cells 130 to the top or bottom of the single cell 130, thereby causing adverse effects on the single cell 130.

[0061] In the present application, a glue blocking protrusion 142 is provided on the glue blocking strip 141, and the glue blocking protrusion 142 is arranged between two adjacent single cells 130, so that the glue blocking protrusion 142 is used to block the adhesive between the side plate 120 and the single cell 130 from overflowing to the top of the single cell 130, thereby eliminating the impact of the glue overflow problem on the assembly of the battery and other components; at the same time, the adhesive between the side plate 120 and the single cell 130 is blocked from overflowing to the bottom of the single cell 130, so as to prevent the adhesive from curing and damaging the coating film on the outer surface of the battery during the assembly of the single cell 130, thereby causing damage to the single cell, and finally eliminating the impact of the glue overflow problem on the assembly of the battery pack, improving the assembly yield of the battery pack, and improving the assembly efficiency of the battery pack.

[0062] In one embodiment, the unit battery 130 has first side walls 131 opposite to each other in a first direction X, and second side walls 132 opposite to each other in a second direction Y, and the second side wall 132 is connected between the two first side walls 131 .

[0063] Specifically, the adhesive blocking protrusion 142 is at least partially disposed between the first side walls 131 of two adjacent single cells 130. There may be a gap between the two first side walls 131 of two adjacent single cells 130, and the adhesive may overflow from the gap to the top or bottom of the single cell 130, causing adverse effects on the single cell 130. In the present application, the adhesive blocking protrusion 142 is disposed between the first side walls 131 of two adjacent single cells 130 to better prevent the adhesive used to bond the side plate 120 and the single cell 130 from flowing between the two single cells 130, thereby better alleviating the impact of the adhesive overflow problem on the assembly of the battery pack.

[0064] In another embodiment, the adhesive blocking protrusion 142 is at least partially disposed between the second side walls 132 of two adjacent single cells 130. There may be a gap between the two second side walls 132 of two adjacent single cells 130, and the adhesive may overflow from the gap to the top or bottom of the single cell 130, causing adverse effects on the single cell 130. In the present application, the adhesive blocking protrusion 142 is disposed between the second side walls 132 of two adjacent single cells 130 to better prevent the adhesive used to bond the side plate 120 and the single cell 130 from flowing between the two single cells 130, thereby better eliminating the effect of the adhesive overflow problem on the assembly of the battery pack.

[0065] In another embodiment, a chamfered portion 133 is provided at the connection between the first side wall 131 and the second side wall 132, and the above-mentioned adhesive blocking protrusion 142 is at least partially provided between the chamfered portions 133 of two adjacent single cells 130, and the adhesive blocking protrusion 142 is attached to the chamfered portion 133, and the adhesive blocking protrusion 142 is configured to prevent the adhesive between the side plate 120 and the single cell 130 from overflowing from the chamfered portion 133.

[0066] It is understandable that when the battery pack 100 in the present application is assembled, adhesive needs to be applied between the side panel 120 and the single cell 130 to bond the two together. However, due to the presence of the chamfered portion 133 of the single cell 130, the adhesive may overflow from the chamfered portion 133 of the single cell 130 to adversely affect the single cell 130.

[0067] In the present application, the glue-blocking protrusion 142 is attached to the chamfered portion 133, so that the glue-blocking protrusion 142 can be used to block the adhesive between the side plate 120 and the single cell 130 from overflowing from the chamfered portion 133 of the single cell 130 to the top of the single cell 130, thereby eliminating the impact of the glue overflow problem on the assembly of the battery and other components; at the same time, the adhesive between the side plate 120 and the single cell 130 is blocked from overflowing from the chamfered portion 133 of the single cell 130 to the bottom of the single cell 130, so as to prevent the adhesive from curing and damaging the outer surface coating of the battery during the assembly of the single cell 130, thereby causing damage to the single cell, and finally eliminating the impact of the glue overflow problem on the assembly of the battery pack, improving the assembly yield of the battery pack, and improving the assembly efficiency of the battery pack.

[0068] In one embodiment, a plurality of adhesive stopper protrusions 142 are arranged at intervals in the first direction X, and each adhesive stopper protrusion 142 is disposed between the chamfered portions 133 of a group of two adjacent single battery cells 130 .

[0069] In the present application, multiple glue blocking protrusions 142 are provided so that the multiple glue blocking protrusions 142 are respectively provided between the chamfered portions 133 of multiple groups of two adjacent single batteries 130 to simultaneously block glue for multiple groups of two adjacent single batteries 130 , further improving the glue blocking effect of the glue blocking element 140 .

[0070] In one embodiment, the battery pack further has a reference plane A perpendicular to the third direction Z, and the orthographic projection of the glue blocking protrusion 142 on the reference plane A is any one or more of a triangle, a trapezoid or an arc.

[0071] Specifically, for example, the orthographic projection of the above-mentioned glue blocking protrusion 142 on the reference plane A is a triangle; for another example, the orthographic projection of the above-mentioned glue blocking protrusion 142 on the reference plane A is a trapezoid; for another example, the orthographic projection of the above-mentioned glue blocking protrusion 142 on the reference plane A is an arc, but is not limited to this.

[0072] In the present application, the glue blocking protrusions 142 of different shapes are designed to be suitable for single cells of different shapes in the battery pack 100, so as to fit tightly with single cells of different shapes, thereby eliminating the glue overflow problem of single cells of different shapes and having universality.

[0073] In one embodiment, the side panel 120 has a first end 121 and a second end 122 arranged opposite to each other along the third direction Z. A plurality of the aforementioned rubber blocking strips 141 are arranged at intervals along the third direction Z, wherein two rubber blocking strips 141 are respectively arranged at the first end 121 and the second end 122 .

[0074] It can be understood that in the present application, a rubber barrier strip 141 is set at the first end 121 of the side panel 120 to prevent the adhesive from overflowing from the upper part of the single cell 130, thereby eliminating the impact of the adhesive overflowing from the upper part of the single cell 130 on the assembly of the battery and other components, thereby improving the assembly yield of the battery pack; in the present application, a rubber barrier strip 141 is set at the second end 122 of the side panel 120 to prevent the adhesive from overflowing from the upper part of the single cell 130 to the tooling plate, thereby eliminating the risk of puncturing the blue film on the surface of the battery, thereby further improving the assembly yield of the battery pack, and at the same time, achieving the function of limiting the thickness of the adhesive between the side panel 120 and the single cell 130, and playing a balancing function in the glue pressing process.

[0075] In the second specific embodiment of the present application:

[0076] It is further formed on the basis of the specific embodiment 1 of the present application.

[0077] For details, please refer to Figure 6 The above-mentioned rubber blocking element 140 also includes: a connecting portion 143, the connecting portion 143 extends in the third direction Z, and the connecting portion 143 connects the rubber blocking protrusions 142 on two adjacent rubber blocking strips 141 along the third direction Z.

[0078] The connection part 143 can be integrally formed with the adhesive stop convex part 142, or the connection part 143 can be fixedly connected with the adhesive stop convex part 142, for example, the connection part 143 and the adhesive stop convex part 142 are bonded with adhesive, but it is not limited thereto. This application does not make any specific limitation, as long as it does not affect the effect of this application.

[0079] The present application connects the glue blocking protrusions 142 on two adjacent glue blocking strips 141 into one body by setting a connecting portion 143, so that the connecting portion 143 and the glue blocking protrusion 142 are synchronously attached to the chamfered portion 133 of the single battery 130, thereby increasing the attachment area between the glue blocking element 140 and the chamfered portion 133, and further improving the glue blocking effect of the glue blocking element 140.

[0080] At the same time, other technical features in the specific embodiment 2 of the present application are the same as those in the above-mentioned specific embodiment 1. In view of the fact that the above-mentioned specific embodiment 1 has already described the features in detail, the specific embodiment 2 in the present application will not be described accordingly, and the description in the specific embodiment 1 may be referred to.

[0081] In the specific embodiment 3 of the present application:

[0082] It is further formed on the basis of specific embodiment 1 or specific embodiment 2 of the present application.

[0083] Please refer to Figure 7 and Figure 8 The above-mentioned adhesive blocking element 140 also includes: a plurality of return frames 144, the return frames 144 are arranged between the single battery 130 and the side plate 120, and the return frames 144, the single battery 130 and the side plate 120 surround and form an adhesive blocking space 1441, and the adhesive blocking space 1441 is filled with adhesive.

[0084] The above-mentioned return frame 144 can be connected to the single battery 130 or to the side plate 120, which is not specifically limited in the present application and can be specifically set according to actual circumstances.

[0085] The above-mentioned return-shaped frame 144 can be made of a flexible material. For example, the above-mentioned return-shaped frame 144 can be made of foam. The above-mentioned return-shaped frame 144 can also be made of rubber, but is not limited thereto.

[0086] The length of the above-mentioned return frame 144 in the first direction X is smaller than the length of the single battery 130 in the first direction X, and the length of the above-mentioned return frame 144 in the third direction Z is smaller than the length of the single battery 130 in the third direction Z to ensure the glue blocking effect of the return frame 144.

[0087] It can be understood that in the present application, a return frame 144 is set between the single cell 130 and the side plate 120 so that the adhesive used to bond the single cell 130 and the side plate 120 is contained in the return frame 144. While ensuring that the single cell 130 and the side plate 120 are bonded, the return frame 144 is used to block the adhesive from overflowing and prevent the adhesive from overflowing to other parts of the single cell 130, thereby eliminating the influence of the overflow problem on the battery pack assembly and improving the assembly efficiency of the battery pack.

[0088] It should be understood that the return frame 144 in the present application can be set only on the single battery 130 or the side plate 120 to prevent the adhesive from overflowing to other parts of the single battery 130 and eliminate the impact of the overflow problem on the battery pack assembly.

[0089] At the same time, other technical features in specific embodiment three of the present application are the same as those in the above-mentioned specific embodiment one or specific embodiment two. In view of the fact that the above-mentioned specific embodiment one and specific embodiment two have already described the features in detail, specific embodiment three in the present application will not be described accordingly, and reference may be made to the description in specific embodiment one and specific embodiment two.

[0090] On the other hand, in an embodiment of the present application, the present application further provides an electric device, including a battery pack as described above, which serves as a power supply for the electric device. The electric device described above may be, but is not limited to, a mobile device (such as a mobile phone, a laptop computer, etc.), an electric vehicle (such as a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, an electric bicycle, an electric scooter, an electric golf cart, an electric truck, etc.), an electric train, a ship and a satellite, an energy storage system, etc.

[0091] The introduction provided in the above steps is only used to help understand the method, structure and core idea of ​​the present application. For ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A battery pack having a first direction, a second direction and a third direction intersecting each other, characterized in that: include: A box body, wherein the box body has a containing cavity; A plurality of single cells, wherein the plurality of single cells are arranged in the accommodation cavity; as well as A side plate, arranged on one side of the single battery in the second direction; as well as A rubber blocking element is arranged between the side plate and the single cell and is located on at least one side of the single cell along the third direction, the rubber blocking element comprises: a rubber blocking strip, a plurality of rubber blocking protrusions and a plurality of return frames, the rubber blocking strip is arranged on the side plate and extends along the first direction, a plurality of the rubber blocking protrusions are arranged on a side of the rubber blocking strip away from the side plate, and the rubber blocking protrusions are at least partially arranged between two adjacent single cells in the first direction; The circular frame is arranged between the single battery and the side plate, and a glue blocking space is formed between the circular frame, the single battery and the side plate, and the glue blocking space is filled with adhesive.

2. The battery pack according to claim 1, characterized in that: The single battery has first side walls opposite to each other in the first direction, and second side walls opposite to each other in the second direction, wherein the second side walls are connected between the two first side walls; The glue blocking protrusion is at least partially disposed between the first side walls of two adjacent single cells; and / or, The glue blocking protrusion is at least partially disposed between the second side walls of two adjacent single batteries.

3. The battery pack according to claim 2, characterized in that: A chamfered portion is provided at a connection between the first side wall and the second side wall; The adhesive blocking protrusion is at least partially disposed between the chamfered portions of two adjacent single cells, and the adhesive blocking protrusion fits the chamfered portions. The adhesive blocking protrusion is configured to block the adhesive between the side plate and the single cells from overflowing from the chamfered portions.

4. The battery pack according to claim 3, characterized in that: A plurality of the adhesive stopper protrusions are arranged at intervals in the first direction, and each of the adhesive stopper protrusions is disposed between the chamfered portions of two adjacent single batteries.

5. The battery pack according to claim 1, wherein: The rubber blocking protrusion and the rubber blocking strip are integrally formed; or, The rubber blocking protrusion is fixedly connected to the rubber blocking strip.

6. The battery pack according to claim 1, wherein: The battery pack also has a reference plane perpendicular to the third direction; The orthographic projection of the rubber-blocking protrusion on the reference plane is in any one or more of the shapes of a triangle, a trapezoid or an arc.

7. The battery pack according to claim 6, characterized in that: The side plate has a first end and a second end that are arranged opposite to each other along the third direction, A plurality of the rubber blocking strips are arranged at intervals along the third direction, wherein two of the rubber blocking strips are arranged at the first end and the second end respectively.

8. The battery pack according to claim 7, characterized in that: The glue-blocking element further includes: a connecting portion, the connecting portion extending in the third direction, and the connecting portion connects the glue-blocking protrusions on two adjacent glue-blocking strips along the third direction.

9. An electrical device, characterized in that: It comprises a battery pack as claimed in any one of claims 1 to 8, wherein the battery pack serves as a power supply for the electrical device.

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