Support assembly, battery assembly, battery pack and electric equipment

Abstract

The utility model discloses a support assembly, a battery assembly, a battery pack and electric equipment, the support assembly comprises: a cell end support suitable for being matched with the end of a single cell; the heating piece is fixed on one side, facing the single battery cell, of the battery cell end part bracket, and the heating piece is suitable for being attached to the end surface of the single battery cell. The support assembly has the advantages of being convenient to assemble, high in assembling efficiency, small in heat conduction loss and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a bracket assembly, a battery assembly, a battery pack and electrical equipment. Background Art

[0002] The battery assembly in the related art is usually provided with a heating element, and the heating element is used to heat the single battery cell. However, due to the unreasonable arrangement structure of the heating element in the related art, not only the heating efficiency of the single battery cell is low and the heat conduction loss is large, but also the assembly and fixation of the heating element is more troublesome, and the assembly efficiency of the battery assembly is low. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a bracket assembly, which has the advantages of convenient assembly, high assembly efficiency and low heat conduction loss.

[0004] The utility model also provides a battery assembly having the bracket assembly.

[0005] The utility model also provides a battery pack having the battery assembly.

[0006] The utility model also provides an electrical device having the battery pack.

[0007] In order to achieve the above-mentioned purpose, according to the first aspect of the embodiment of the utility model, a bracket assembly is proposed, and the bracket assembly includes: a battery cell end bracket, which is suitable for fitting with the end of a single battery cell; a heating element, which is fixed to the side of the battery cell end bracket facing the single battery cell, and the heating element is suitable for fitting to the end face of the single battery cell.

[0008] The bracket assembly according to the embodiment of the utility model has the advantages of convenient assembly, high assembly efficiency and small heat conduction loss.

[0009] According to some embodiments of the present invention, at least one side of the heating element facing away from the battery cell end bracket is provided with an insulating layer.

[0010] According to some embodiments of the utility model, the heating element is provided with a first avoidance hole, and the battery cell end bracket is provided with a second avoidance hole; wherein, the first avoidance hole and the second avoidance hole are arranged relatively to each other, and the first avoidance hole and the second avoidance hole are suitable for the single battery cell and the pole to pass through.

[0011] According to some embodiments of the utility model, the heating element is provided with a third avoidance hole, and the battery cell end bracket is provided with a fourth avoidance hole; wherein the third avoidance hole and the fourth avoidance hole are arranged opposite to each other, and the third avoidance hole and the fourth avoidance hole are suitable for exposing the explosion-proof valve of the single battery cell.

[0012] According to some embodiments of the present invention, the third avoidance hole is communicated with the adjacent first avoidance hole.

[0013] According to some embodiments of the present invention, the bracket assembly further includes: a connecting piece, which is fixed to the battery cell end bracket and is used to electrically connect to the pole of the single battery cell.

[0014] According to some embodiments of the present invention, the battery cell end bracket includes: a first clamping portion, and the first clamping portion is at least clamped to two opposite sides of the connecting piece in the width direction.

[0015] According to some embodiments of the present invention, the battery cell end bracket further includes: a supporting protrusion, wherein the supporting protrusion is at least provided on one side of the width direction of the connecting piece, and the supporting protrusion supports the connecting piece.

[0016] According to some embodiments of the present invention, the bracket assembly further includes: a flexible circuit board, wherein the flexible circuit board is mounted on the battery cell end bracket and is electrically connected to the connecting piece.

[0017] According to some embodiments of the utility model, the battery cell end bracket further includes: a first supporting and positioning portion, the flexible circuit board is provided with a second supporting and positioning portion, and the first supporting and positioning portion and the second supporting and positioning portion correspond to each other.

[0018] According to some embodiments of the utility model, the bracket assembly further includes: a temperature collection assembly, the battery cell end bracket is provided with a second clamping portion, and the temperature collection assembly is clamped and fixed to the second clamping portion.

[0019] According to some embodiments of the present invention, the bracket assembly further includes: a protective cover, wherein the protective cover is connected to a side of the battery cell end bracket facing away from the single battery cell.

[0020] According to some embodiments of the utility model, the protective cover is provided with a third clamping portion, the battery cell end bracket (100) is provided with a fourth clamping portion, and the third clamping portion and the fourth clamping portion are clamped.

[0021] According to the second aspect of the present invention, a battery assembly is provided, the battery assembly comprising: a single cell; and the bracket assembly according to the first aspect of the present invention, the bracket assembly being matched to the end of the single cell.

[0022] The battery assembly according to the second aspect of the present invention, by utilizing the bracket assembly according to the first aspect of the present invention, has the advantages of easy assembly, high assembly efficiency and low heat conduction loss.

[0023] According to some embodiments of the present invention, the battery assembly further includes: a base, the single battery cells are multiple, and the multiple single battery cells are arranged along a first direction, and the base is supported on the same radial side of the multiple single battery cells.

[0024] According to some embodiments of the present invention, the single battery cell is cylindrical, the base is provided with a plurality of arc-shaped receiving grooves, and the plurality of single battery cells are arranged in the plurality of arc-shaped receiving grooves in a one-to-one correspondence.

[0025] According to some embodiments of the utility model, the base is further provided with a reinforcing rib, the reinforcing rib is connected between the side walls of adjacent arc-shaped accommodating grooves, and a reinforcing cavity is formed between the reinforcing rib and the side walls of the arc-shaped accommodating groove.

[0026] According to some embodiments of the present invention, along the height direction of the base, the height of the reinforcing rib is H; the radius of the single battery cell is R; wherein H and R satisfy: 0.36R≤H≤R.

[0027] According to some embodiments of the utility model, the base is also provided with a limiting edge, which is arranged at the end of the arc-shaped accommodating groove along the axial direction of the arc-shaped accommodating groove, and the limiting edge protrudes from the side wall of the arc-shaped accommodating groove in a direction close to the central axis of the arc-shaped accommodating groove, and the limiting edge and the side wall of the arc-shaped accommodating groove define a glue coating space.

[0028] According to some embodiments of the present invention, along the radial direction of the arc-shaped accommodating groove, the height of the limiting edge is 0.5 mm to 1 mm; and / or, along the axial direction of the arc-shaped accommodating groove, the thickness of the limiting edge is not less than 5 mm.

[0029] According to a third aspect of the present invention, a battery pack is provided. The battery pack includes the battery assembly according to the second aspect of the present invention.

[0030] The battery pack according to the third aspect of the present invention, by utilizing the battery assembly according to the second aspect of the present invention, has the advantages of easy assembly, high assembly efficiency and low heat conduction loss.

[0031] According to a fourth aspect of the present invention, an electric device is provided. The electric device includes the battery pack according to the third aspect of the present invention.

[0032] The electrical equipment according to the fourth aspect of the present invention, by utilizing the battery pack according to the third aspect of the present invention, has the advantages of easy assembly, high assembly efficiency and low heat conduction loss.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0035] Figure 1 is a schematic structural diagram of a battery assembly according to an embodiment of the utility model;

[0036] Figure 2 is an exploded view of a battery assembly according to an embodiment of the utility model;

[0037] Figure 3 It is a schematic structural diagram of a heating element and a cell end bracket according to an embodiment of the utility model;

[0038] Figure 4 It is a schematic structural diagram of a heating element and a single battery cell according to an embodiment of the utility model;

[0039] Figure 5 It is a schematic structural diagram of a cell end bracket according to an embodiment of the utility model;

[0040] Figure 6 It is a schematic diagram of the assembly of the base and the single battery cell according to an embodiment of the utility model;

[0041] Figure 7 It is a schematic diagram of the assembly of a base and a single battery cell according to another embodiment of the utility model;

[0042] Figure 8 It is a structural schematic diagram of a base according to an embodiment of the utility model.

[0043] Reference numerals:

[0044] 1. Bracket assembly; 2. Battery assembly;

[0045] 100, battery cell end bracket; 110, second avoidance hole; 120, fourth avoidance hole; 130, first clamping portion; 140, supporting protrusion; 150, first supporting positioning portion; 160, second clamping portion; 170, fourth clamping portion;

[0046] 200, heating element; 210, first avoidance hole; 220, third avoidance hole;

[0047] 300, connecting piece;

[0048] 400, flexible circuit board; 410, second supporting and positioning portion;

[0049] 500. temperature collection component;

[0050] 600, protective cover; 610, third clamping portion;

[0051] 700, single cell; 710, pole; 720, explosion-proof valve;

[0052] 800, base; 810, arc-shaped receiving groove; 811, structural adhesive; 820, reinforcing ribs; 830, reinforcing cavity; 840, limiting edge. DETAILED DESCRIPTION

[0053] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0054] In the description of the present invention, 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", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0056] In the description of the present invention, "multiple" means two or more, and "several" means one or more.

[0057] The bracket assembly 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0058] like Figure 1-Figure 8 As shown, the bracket assembly 1 according to the embodiment of the present invention includes a battery cell end bracket 100 and a heating element 200 .

[0059] The cell end bracket 100 is adapted to fit the end of the single cell 700 , the heating element 200 is fixed to the side of the cell end bracket 100 facing the single cell 700 , and the heating element 200 is adapted to be attached to the end surface of the single cell 700 .

[0060] Among them, the single cell 700 can be a cylindrical cell, and the cell end bracket 100 is matched with the end of the single cell 700, that is, the cell end bracket 100 can be matched with the two axial ends of the single cell 700. Of course, the single cell 700 in the embodiment of the utility model can also be a square cell or a cell with a cross-section of other shapes, and the cell end bracket 100 is also matched with the two axial ends of the single cell 700.

[0061] According to the bracket assembly 1 of the embodiment of the utility model, the cell end bracket 100 is matched with the end of the single cell 700, and the heating element 200 is fixed to the side of the cell end bracket 100 facing the single cell 700. In this way, when the single cell 700 is a cylindrical cell, the heating element 200 is directly attached to the axial end surface of the cylindrical cell, which is conducive to improving the heat transfer efficiency between the heating element 200 and the cylindrical cell, and the heating element 200 has a better heating effect on the cylindrical cell. In addition, since the heating element 200 and the single cell 700 are in direct contact, the heat conduction loss between the heating element 200 and the single cell 700 can be reduced.

[0062] Moreover, by fixing the heating element 200 to the battery cell end bracket 100, that is, the heating element 200 can be integrated into the battery cell end bracket 100, for example, the heating element 200 can be fixed to the battery cell end bracket 100 by bonding. This can simplify the assembly steps between the heating element 200 and the single battery cell 700. The assembly of the heating element 200 and the battery cell can be achieved by assembling the bracket assembly 1 and the single battery cell 700. There is no need to fix the heating element 200 and the single battery cell 700 separately, and the assembly efficiency is higher.

[0063] Thus, the bracket assembly 1 according to the embodiment of the utility model has the advantages of convenient assembly, high assembly efficiency and low heat conduction loss.

[0064] In some specific embodiments of the present invention, at least one side of the heating element 200 facing away from the cell end bracket 100 is provided with an insulating layer.

[0065] For example, the heating wire of the heating element 200 can be made of brass or stainless steel, and an insulating layer can be set on the side of the heating element 200 facing away from the battery cell end bracket 100, or an insulating layer can be set on both sides of the heating element 200. This arrangement can avoid electrical connection between the heating element 200 and the single battery cell 700, which is beneficial to improving the safety of the battery assembly 2.

[0066] The insulating layer may be a PI film (Polyimide Film), and the thickness of the insulating layer may be about 0.3 mm, which can ensure the insulating effect of the insulating layer and avoid the insulating layer being too thick to cause the heating element 200 to occupy a large space.

[0067] In addition, in some other specific embodiments of the present invention, the battery cell end bracket 100 can be an insulating part, so that the battery cell end bracket 100 itself can play an insulating role, and there is no need to set an insulating film on the side of the heating element 200 facing the battery cell end bracket 100, which is beneficial to simplify the structure of the heating element 200, facilitate processing and reduce costs.

[0068] In some specific embodiments of the present invention, Figure 3 and Figure 5 As shown, the heating element 200 is provided with a first avoidance hole 210, and the battery cell end bracket 100 is provided with a second avoidance hole 110. The first avoidance hole 210 and the second avoidance hole 110 are arranged opposite to each other, and the first avoidance hole 210 and the second avoidance hole 110 are suitable for the pole 710 of the single battery cell 700 to pass through.

[0069] There may be a plurality of first avoidance holes 210 and a plurality of second avoidance holes 110, and the plurality of first avoidance holes 210 and the plurality of second avoidance holes 110 are arranged in a one-to-one correspondence. In this way, when the single battery cell 700 and the bracket assembly 1 are assembled, the first avoidance holes 210 and the second avoidance holes 110 can avoid the pole 710 of the single battery cell 700, so that the pole 710 can be exposed from the bracket assembly 1 after the assembly is completed.

[0070] Furthermore, if Figure 3 and Figure 5 As shown, the heating element 200 is provided with a third avoidance hole 220, and the battery cell end bracket 100 is provided with a fourth avoidance hole 120. The third avoidance hole 220 and the fourth avoidance hole 120 are arranged opposite to each other, and the third avoidance hole 220 and the fourth avoidance hole 120 are suitable for exposing the explosion-proof valve 720 of the single battery cell 700.

[0071] Among them, there can be multiple third avoidance holes 220, and there can be multiple fourth avoidance holes 110. The multiple third avoidance holes 220 and the multiple fourth avoidance holes 110 are arranged in a one-to-one correspondence. In this way, the third avoidance holes 220 and the fourth avoidance holes 120 can avoid the explosion-proof valve 720 of the single battery cell 700. When the battery pack has thermal runaway, the bracket assembly 1 will not block the explosion-proof valve 720, so that the explosion-proof valve 720 can be opened normally during thermal runaway, which is beneficial to improving the safety of the battery pack.

[0072] It should be noted that the single cell 700 may be provided with an explosion-proof valve 720 only at the positive electrode, or the single cell 700 may be provided with an explosion-proof valve 720 only at the negative electrode, or the single cell 700 may be provided with an explosion-proof valve 720 at both the positive electrode and the negative electrode, and the heating element 200 and the cell end bracket 100 may be provided with avoidance holes according to the position of the explosion-proof valve 720.

[0073] In some specific embodiments of the present invention, Figure 2 and Figure 3 As shown, the third avoidance hole 220 is communicated with the adjacent first avoidance hole 210 .

[0074] It can be understood that the first avoidance hole 210 corresponds to the pole 710, and the first avoidance hole 210 is located near the middle of the width direction of the heating element 200. The third avoidance hole 220 is close to the first avoidance hole 210. By connecting the third avoidance hole 220 and the first avoidance hole 210, the structure of the third avoidance hole 220 and the first avoidance hole 210 can be simplified, that is, the structure of the heating element 200 is simplified, which is convenient for processing and helps to save processing costs.

[0075] In some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the bracket assembly 1 further includes a connecting piece 300 .

[0076] The connecting piece 300 is fixed to the battery cell end bracket 100 , and the connecting piece 300 is used to be electrically connected to the pole 710 of the single battery cell 700 .

[0077] For example, one end of the connecting piece 300 can be electrically connected to the positive pole 710 of a single battery cell 700, and the other end can be electrically connected to the negative pole 710 of another single battery cell 700, thereby connecting multiple single batteries 700 in the battery assembly 2 in series through multiple connecting pieces 300. In addition, the outermost connecting piece 300 can be connected to the pole 710 of only one single battery cell 700, and the connecting piece 300 can be electrically connected to the outermost connecting piece 300 of another battery assembly 2, thereby electrically connecting multiple battery assemblies 2 together.

[0078] Among them, the connecting piece 300 is fixed to the side of the battery cell end bracket 100 facing away from the single battery cell 700, that is, the connecting piece 300 and the heating element 200 are respectively arranged on the opposite sides of the thickness direction of the battery cell end bracket 100, so that the connecting piece 300 and the heating element 200 can be avoided from contacting each other, thereby further improving the safety of the battery assembly 2.

[0079] The utility model can improve assembly efficiency and reduce welding operation difficulty by integrating the connecting piece with the battery cell end bracket, that is, it is only necessary to weld the connecting piece with the pole and there is no need to align the connecting piece with the pole.

[0080] In some specific embodiments of the present invention, Figure 5 As shown, the cell end bracket 100 includes a first clamping portion 130, and the first clamping portion 130 is used to fix the connecting piece to facilitate the positioning of the connecting piece and improve the stability of the connecting piece and the cell end bracket.

[0081] Furthermore, the first clamping portion 130 is at least clamped to two opposite sides of the connecting piece 300 . For example, the first clamping portion 130 is at least clamped to two opposite sides of the connecting piece 300 in the width direction.

[0082] Among them, the first clamping portion 130 can be constructed as a buckle. By using the first clamping portion 130 to fix the two sides of the width of the connecting piece 300, the connection stability between the connecting piece 300 and the battery cell end bracket 100 can be improved, and the connecting piece 300 can be prevented from being separated from the battery cell end bracket 100, thereby further improving the stability of the electrical connection between the connecting piece 300 and the single battery cell 700.

[0083] In some specific embodiments of the present invention, Figure 5 As shown, the cell end bracket 100 further includes a support protrusion 140, which is provided at least on one side of the connecting piece (300) to support the connecting piece and also to position the connecting piece. Specifically, the support protrusion 140 is provided at least on one side of the connecting piece 300 in the width direction, and the support protrusion 140 supports the connecting piece 300.

[0084] For example, the support protrusion 140 can be arranged on one side of the connecting piece 300 in the width direction, and after the assembly is completed, the support protrusion 140 is located on the lower side of the connecting piece 300, so that the support protrusion 140 can be used to support the connecting piece 300, that is, the support protrusion 140 and the first clamping portion 130 can fix the connecting piece 300 at multiple points, thereby preventing the connecting piece 300 from shaking relative to the battery cell end bracket 100, and further improving the connection stability between the connecting piece 300 and the battery cell end bracket 100.

[0085] There may be a plurality of supporting protrusions 140 , and the plurality of supporting protrusions 140 are respectively disposed on both sides of the first clamping portion 130 .

[0086] In some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the bracket assembly 1 also includes a flexible circuit board 400, which is installed on the battery cell end bracket 100 and is electrically connected to the connecting piece 300. The flexible circuit board 400 and the connecting piece 300 can be connected by welding. In this way, the flexible circuit board 400 can collect data of the single battery cell 700 through the connecting piece 300, such as collecting the voltage of the single battery cell 700 to detect the working state of the single battery cell 700, which is conducive to improving the working safety of the battery assembly 2.

[0087] In addition, by fixing the flexible circuit board 400 to the battery cell end bracket 100, the integration of the bracket assembly 1 can be higher, which is conducive to simplifying the assembly of the battery assembly 2 and improving the assembly efficiency.

[0088] In some specific embodiments of the present invention, Figure 1 and Figure 5 As shown, the cell end bracket 100 further includes a first support positioning portion 150 , and the flexible circuit board 400 is provided with a second support positioning portion 410 , and the first support positioning portion 150 and the second support positioning portion 410 are matched with each other.

[0089] Among them, there can be multiple first support positioning parts 150, and there can be multiple second support positioning parts 410. The multiple first support positioning parts 150 and the multiple second support positioning parts 410 are matched one by one, and the first support positioning part 150 can be a positioning column, and the second support positioning column can be a positioning hole, so that the positioning column can be inserted into the positioning hole to position and fix the flexible circuit board 400 and the battery cell end bracket 100, and the assembly steps are simple, which is convenient for assembly.

[0090] In addition, the first supporting positioning portion 150 may include a positioning column and a supporting sheet, the supporting sheet is connected to the battery cell end bracket 100, and the positioning column is arranged on the side of the supporting sheet facing the flexible circuit board 400, so that when the positioning column is inserted into the positioning hole on the flexible circuit board 400, the side of the flexible circuit board 400 facing the battery cell end bracket 100 can be supported by the supporting sheet, further improving the fixing stability of the battery cell end bracket 100 to the flexible circuit board 400.

[0091] In some specific embodiments of the present invention, Figure 1 As shown, the bracket assembly 1 further includes a temperature collection assembly 500 , the battery cell end bracket 100 is provided with a second clamping portion 160 , and the temperature collection assembly 500 is clamped and fixed to the second clamping portion 160 .

[0092] Among them, the second clamping portion 160 can also be constructed as a buckle, and the second clamping portion 160 can be arranged near the middle of the battery cell end bracket 100. The temperature collection component 500 is fixed by the second clamping portion 160, so that the temperature collection component 500 can be closer to the single battery cell 700, and then the temperature of the battery assembly 2 during operation can be collected by the temperature collection component 500, so as to monitor the temperature of the battery assembly 2 and the single battery cell 700 in real time, avoid excessive temperature, and help improve the safety of the battery assembly 2.

[0093] In some specific embodiments of the present invention, Figure 2 As shown, the bracket assembly 1 also includes a protective cover 600, which is connected to the side of the battery cell end bracket 100 that is away from the single battery cell 700. In this way, the protective cover 600 can be used to cover components such as the flexible circuit board 400, the temperature collection assembly 500, the connecting piece 300 and the pole 710 of the single battery cell 700, which can not only improve the appearance of the battery assembly 2, but also avoid interference between external components and the components blocked by the protective cover 600, thereby further improving the safety of the battery assembly 2.

[0094] Furthermore, if Figure 2 As shown, the protective cover 600 is provided with a third clamping portion 610 , and the cell end bracket 100 is provided with a fourth clamping portion 170 , and the third clamping portion 610 and the fourth clamping portion 170 are clamped.

[0095] Among them, the third clamping portion 610 can be constructed as a clamping hole, and the fourth clamping portion 170 can be constructed as a buckle. The protective cover 600 can be fixed to the battery cell end bracket 100 by clamping the third clamping portion 610 and the fourth clamping portion 170. The connection structure is simple and the clamping connection is stable, so that the protective cover 600 can be stably fixed to the battery cell end bracket 100, so that the protective cover 600 can be used to protect the flexible circuit board 400, the temperature collection component 500, the connecting piece 300 and the pole 710 of the single battery cell 700 and other components, thereby improving the safety of the battery assembly 2.

[0096] The battery assembly 2 according to an embodiment of the present invention is described below with reference to the accompanying drawings. The battery assembly 2 includes a single cell 700 and a bracket assembly 1 according to the above embodiment of the present invention. The bracket assembly 1 is matched with the end of the single cell 700. There may be multiple bracket assemblies 1, and the multiple bracket assemblies 1 are respectively arranged at the axial ends of the single cell 700.

[0097] The battery assembly 2 according to the embodiment of the utility model has the advantages of convenient assembly, high assembly efficiency and low heat conduction loss by utilizing the bracket assembly 1 according to the above embodiment of the utility model.

[0098] In some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the battery assembly 2 further includes a base 800 .

[0099] There are multiple single cells 700, and the multiple single cells 700 are arranged along a first direction, which can be the length direction of the base 800 or the radial direction of the single cell 700. The base 800 is supported on the same side of the multiple single cells 700. Among them, the multiple single cells 700 can be arranged along the radial direction of the single cell 700, and the multiple single cells 700 are arranged along the length direction of the base 800. The multiple single cells 700 can lie on the base 800, which can not only reduce the height dimension of the battery assembly 2 and facilitate layout, but also facilitate the design and process implementation of high and low voltage connections.

[0100] In some specific embodiments of the present invention, Figure 2 and Figure 8 As shown, the single battery cell 700 is cylindrical, and the base 800 is configured with a plurality of arc-shaped receiving grooves 810 . The plurality of single battery cells 700 are disposed in the plurality of arc-shaped receiving grooves 810 in a one-to-one correspondence.

[0101] In this way, the arc-shaped receiving groove 810 is constructed into a shape that is compatible with the single battery cell 700, and the single battery cell 700 can be bonded and fixed in the arc-shaped receiving groove 810 by means of structural adhesive 811. With this arrangement, the contact area between the arc-shaped receiving groove 810 and the single battery cell 700 can be larger, which is beneficial to improving the connection stability between the arc-shaped receiving groove 810 and the single battery cell 700, and thus multiple single battery cells 700 can be more stably fixed to the base 800.

[0102] Furthermore, if Figure 6-Figure 8 As shown, the base 800 is further provided with a reinforcing rib 820, which is connected between the side walls of adjacent arc-shaped receiving grooves 810, and a reinforcing cavity 830 is formed between the reinforcing rib 820 and the side wall of the arc-shaped receiving groove 810. In this way, the structural strength of the side wall of the arc-shaped receiving groove 810 can be improved, and the arc-shaped receiving groove 810 can be prevented from being deformed when the single battery cell 700 squeezes the arc-shaped groove, so as to ensure the consistency of multiple arc-shaped receiving grooves 810, facilitate the stable fixing of multiple single battery cells 700, and further improve the fixing stability of the single battery cell 700.

[0103] Furthermore, along the height direction of the base 800 , the height of the reinforcing rib 820 is H, and the radius of the single battery cell 700 is R, wherein H and R satisfy: 0.36R≤H≤R.

[0104] In this way, the depth of the reinforcing rib 820 will not exceed the radius of the single cell 700, that is, the height of the arc-shaped receiving groove 810 may not exceed the radius of the single cell 700, thereby ensuring that the single cell 700 can be easily installed in the arc-shaped receiving groove 810, while ensuring that the single cell 700 and the arc-shaped receiving groove 810 have sufficient bonding area, the bonding connection strength between the single cell 700 and the arc-shaped receiving groove 810 can be higher, and the connection is more stable.

[0105] In some specific embodiments of the present invention, Figure 8 As shown, the base 800 is also provided with a limiting edge 840, which is provided at the end of the arc-shaped accommodating groove 810, and the limiting edge 840 protrudes from the side wall of the arc-shaped accommodating groove 810 in the direction close to the central axis of the arc-shaped accommodating groove 810, that is, the limiting edge 840 is higher than the side wall of the accommodating groove 810, and the limiting edge 840 and the side wall of the arc-shaped accommodating groove 810 define a glue coating space.

[0106] Therefore, an arc-shaped glue coating space can be defined between the limiting edge 840 and the side wall of the arc-shaped receiving groove 810, and the structural glue 811 can be applied in the glue coating space. This can ensure that after the single battery cell 700 squeezes the structural glue 811, the structural glue 811 can form a consistent thickness. At the same time, the limiting edge 840 can prevent the structural glue 811 from overflowing from both ends of the arc-shaped receiving groove 810.

[0107] In some specific embodiments of the present invention, along the radial direction of the arc-shaped accommodating groove 810, the height of the limiting edge 840 is 0.5mm~1mm, that is, the height of the limiting edge 840 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm.

[0108] It can be understood that the height of the limiting edge 840 is equal to the thickness of the structural adhesive 811. This setting can, on the one hand, prevent the height of the limiting edge 840 from being too low, and thus prevent the thickness of the structural adhesive 811 from being too thin. The structural adhesive 811 can stably bond and fix the single battery cell 700 and the base 800 together. On the other hand, it can prevent the height of the limiting edge 840 from being too high, and thus prevent the thickness of the structural adhesive 811 from being too thick, that is, avoid excessive glue coating.

[0109] In some specific embodiments of the present invention, the thickness of the limiting edge 840 along the axial direction of the arc-shaped accommodating groove 810 is not less than 5 mm, so that the thickness of the limiting edge 840 can be thicker, which is beneficial to improve the structural strength of the limiting edge 840 and avoid deformation and damage of the limiting edge 840 after being squeezed by the single battery cell 700.

[0110] A battery pack according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The battery pack includes a battery assembly 2 according to the above embodiment of the present invention.

[0111] The battery pack according to the embodiment of the present invention has the advantages of convenient assembly, high assembly efficiency and low heat conduction loss by utilizing the battery assembly 2 according to the above embodiment of the present invention.

[0112] The following describes an electric device according to an embodiment of the present invention with reference to the accompanying drawings, wherein the electric device includes a battery pack according to the above embodiment of the present invention. The electric device according to the embodiment of the present invention may be a vehicle or an energy storage system.

[0113] The electric equipment according to the embodiment of the utility model has the advantages of convenient assembly, high assembly efficiency and low heat conduction loss by utilizing the battery pack according to the above embodiment of the utility model.

[0114] Other structures and operations of the bracket assembly 1, the battery assembly 2, the battery pack and the electrical equipment according to the embodiment of the utility model are known to ordinary technicians in this field and will not be described in detail here.

[0115] In the description of this specification, the description with reference to the terms "specific embodiment", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0116] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bracket assembly (1), characterized in that: include: A cell end bracket (100), wherein the cell end bracket (100) is suitable for fitting to an end of a single cell (700); A heating element (200) is fixed to a side of the cell end bracket (100) facing the single cell (700), and the heating element (200) is suitable for being attached to the end surface of the single cell (700).

2. The bracket assembly (1) according to claim 1, characterized in that: At least one side of the heating element (200) facing away from the battery cell end bracket (100) is provided with an insulating layer.

3. The bracket assembly (1) according to claim 1, characterized in that: The heating element (200) is provided with a first avoidance hole (210), and the battery cell end bracket (100) is provided with a second avoidance hole (110); The first avoidance hole (210) and the second avoidance hole (110) are arranged opposite to each other, and the first avoidance hole (210) and the second avoidance hole (110) are suitable for the pole (710) of the single battery cell (700) to pass through.

4. The bracket assembly (1) according to claim 3, characterized in that: The heating element (200) is provided with a third avoidance hole (220), and the battery cell end bracket (100) is provided with a fourth avoidance hole (120); The third avoidance hole (220) and the fourth avoidance hole (120) are arranged opposite to each other, and the third avoidance hole (220) and the fourth avoidance hole (120) are suitable for exposing the explosion-proof valve (720) of the single battery cell (700).

5. The support assembly (1) according to claim 4, characterized in that: The third avoidance hole (220) is in communication with the adjacent first avoidance hole (210).

6. The support assembly (1) according to claim 1, characterized in that: Also includes: A connecting piece (300) is fixed to the battery cell end bracket (100), and the connecting piece (300) is used to be electrically connected to the pole (710) of the single battery cell (700).

7. The support assembly (1) according to claim 6, characterized in that: The cell end bracket (100) comprises: A first clamping portion (130), wherein the first clamping portion (130) is at least clamped to two opposite sides of the connecting piece (300).

8. The support assembly (1) according to claim 6, characterized in that: The cell end bracket (100) further comprises: A supporting protrusion (140), wherein the supporting protrusion (140) is at least arranged on one side of the connecting piece (300), and the supporting protrusion (140) supports the connecting piece (300).

9. The support assembly (1) according to claim 6, characterized in that: Also includes: A flexible circuit board (400) is mounted on the battery cell end bracket (100) and is electrically connected to the connecting piece (300).

10. The support assembly (1) according to claim 9, characterized in that: The cell end bracket (100) further comprises: The first supporting and positioning portion (150) and the flexible circuit board (400) are provided with a second supporting and positioning portion (410), and the first supporting and positioning portion (150) and the second supporting and positioning portion (410) are correspondingly matched.

11. The support assembly (1) according to claim 1, characterized in that: Also includes: A temperature collection component (500), wherein the cell end bracket (100) is provided with a second clamping portion (160), and the temperature collection component (500) is clamped and fixed to the second clamping portion (160).

12. The support assembly (1) according to claim 1, characterized in that: Also includes: A protective cover (600) is connected to a side of the battery cell end bracket (100) facing away from the single battery cell (700).

13. The support assembly (1) according to claim 12, characterized in that: The protective cover (600) is provided with a third clamping portion (610), and the battery cell end bracket (100) is provided with a fourth clamping portion (170), and the third clamping portion (610) and the fourth clamping portion (170) are clamped.

14. A battery assembly (2), characterized in that: include: Single cell (700); According to any one of claims 1 to 13, the bracket assembly (1) is fitted to the end of the single battery cell (700).

15. The battery assembly (2) according to claim 14, characterized in that: Also includes: The base (800) includes a plurality of single battery cells (700), and the plurality of single battery cells (700) are arranged along a first direction, and the base (800) is supported on the same side of the plurality of single battery cells (700).

16. The battery assembly (2) according to claim 15, characterized in that: The single cell (700) is cylindrical in shape, the base (800) is provided with a plurality of arc-shaped receiving grooves (810), and the plurality of single cells (700) are arranged in the plurality of arc-shaped receiving grooves (810) in a one-to-one correspondence.

17. The battery assembly (2) according to claim 16, characterized in that: The base (800) is further provided with a reinforcing rib (820), wherein the reinforcing rib (820) is connected between the side walls of adjacent arc-shaped receiving grooves (810), and a reinforcing cavity (830) is formed between the reinforcing rib (820) and the side walls of the arc-shaped receiving grooves (810).

18. The battery assembly (2) according to claim 17, characterized in that: Along the height direction of the base (800), the height of the reinforcing rib (820) is H; The radius of the single cell (700) is R; Among them, H and R satisfy: 0.36R≤H≤R.

19. The battery assembly (2) according to claim 16, characterized in that: The base (800) is also provided with a limiting edge (840), and along the axial direction of the arc-shaped receiving groove (810), the limiting edge (840) is provided at the end of the arc-shaped receiving groove (810), and the limiting edge (840) protrudes from the side wall of the arc-shaped receiving groove (810) in a direction close to the central axis of the arc-shaped receiving groove (810), and the limiting edge (840) and the side wall of the arc-shaped receiving groove (810) define a glue coating space.

20. The battery assembly (2) according to claim 19, characterized in that: Along the radial direction of the arc-shaped accommodating groove (810), the height of the limiting edge (840) is 0.5 mm to 1 mm; and / or Along the axial direction of the arc-shaped accommodating groove (810), the thickness of the limiting edge (840) is not less than 5 mm.

21. A battery pack, characterized in that: Comprising a battery assembly (2) according to any one of claims 14-20.

22. An electrical equipment, characterized in that: Comprising a battery pack according to claim 21.

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