A battery pack and an electric device

Abstract

The application provides a battery pack and a power utilization device, the battery pack comprising a battery shell, a support, a plurality of battery cells and a first adhesive substance, the plurality of battery cells and the support being accommodated in the battery shell, the support being provided with a connecting hole for filling the first adhesive substance, and at least two battery cells being adhered to the support through the connecting hole, so that the fixation of the at least two battery cells on the support is realized, one battery cell is fixed with other battery cells through the support, the movement of the battery cells can be effectively prevented, the bumping of the battery cells is effectively reduced, the protection performance of the battery pack is improved, the occurrence of safety accidents is reduced, and the safety of the battery is enhanced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Technology

[0002] Rechargeable battery cells are batteries that can be reused after being discharged by recharging to reactivate the active materials. Rechargeable battery cells are widely used in electronic devices such as mobile phones and laptops.

[0003] Battery packs typically consist of multiple cells to meet the voltage requirements of electronic devices. Improving battery pack safety has been a key research focus in the development of battery technology. Summary of the Invention

[0004] In view of the above problems, this application provides a battery pack that can reduce the possibility of cell displacement and improve the safety of the battery pack.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides a battery pack comprising a battery casing, multiple battery cells, a support, and a first adhesive substance. The multiple battery cells and the support are housed within the battery casing. Each battery cell includes a cell casing, electrode terminals, and an electrode assembly disposed within the cell casing. The support has connection holes for filling with the first adhesive substance. The connection holes are filled with the first adhesive substance, and the multiple battery cells are connected to the support through the first adhesive substance in the connection holes, thereby fixing the multiple battery cells on the support. This allows the battery cells to be locked together with other battery cells through the support, effectively restricting the movement of the battery cells, thereby effectively reducing the impact of collisions on the battery cells, improving the protective performance of the battery pack, and enhancing the safety of the battery.

[0007] In some embodiments of the present application, the battery pack includes a support wall, a connection hole through the support wall, and a first side and a second side disposed opposite to each other along a first direction. The first side is closer to the battery cell than the second side, and the second side is farther away from the battery cell housing. The circuit board is disposed on the second side, so that the circuit board and the battery cell are respectively arranged on both sides of the support wall, which facilitates the arrangement of various components in the battery pack.

[0008] In some embodiments of the battery pack provided in this application, when viewed along the first direction, the connection hole includes a first hole and a second hole disposed separately along the first direction. At least one portion of the cell housing of the battery cell is located in the first hole, and at least one portion of the cell housing of the battery cell is located in the second hole. The first adhesive material fills the first hole and the second hole, connecting the cell housings of at least two battery cells and the support wall.

[0009] In some embodiments of the battery pack provided in this application, the connection hole includes a third hole. When viewed along the first direction, the projections of the first hole, the second hole, and the third hole are separate. At least one portion of the cell housing of the battery cell is located in the third hole. The first adhesive material in the first hole, the second hole, and the third hole connects the cell housings and the support walls of at least three of the battery cells.

[0010] In some embodiments of the battery pack provided in this application, the bracket includes a second protrusion. Along the first direction, the projection of the connection hole is located in the area formed by the projection of the second protrusion. The second protrusion can block the first adhesive material in the connection hole, reducing the risk of the first adhesive material overflowing.

[0011] In some embodiments of the battery pack provided in this application, the first adhesive material includes glue.

[0012] In some embodiments of the present application, the battery pack includes a recess on a first side, and the battery cell is at least partially disposed in the recess. The recess can position the battery cell and facilitate the connection of the battery cell on the support wall.

[0013] In some embodiments of the battery pack provided in this application, an electrode hole is provided on the recess. The electrode hole is used to accommodate the electrode terminal. When viewed along the first direction, the electrode terminal is located in the electrode hole, so that the electrode terminal can be connected to the circuit board on the other side of the bracket through the electrode hole.

[0014] In some embodiments of this application, the battery pack further includes a busbar component disposed on the second side of the bracket, and the cells are connected through the busbar component to realize electrical connection between multiple cells.

[0015] In some embodiments of the battery pack provided in this application, the through hole includes a first through hole and a second through hole, the electrode terminal includes a positive terminal and a negative terminal, the positive terminal and the negative terminal are disposed at the same end of the cell, one of the positive terminal and the negative terminal is disposed in the first through hole, and the other of the positive terminal and the negative terminal is disposed in the second through hole.

[0016] In some embodiments of the present application, the battery pack is provided with a reservoir on the second side, and the current-collecting component is placed in the reservoir. The reservoir connects the first through hole and the second through hole. The reservoir allows the current-collecting component to be installed on the second side of the bracket and enables multiple cells to be connected in series or in parallel.

[0017] In some embodiments of the present application, the battery pack is provided with multiple recesses, and a first protrusion is provided at the connection between adjacent recesses. A portion of the first protrusion is located between adjacent cells. The first protrusion can strengthen the connection between adjacent recesses, which is beneficial to enhancing the structural strength of the support.

[0018] In some embodiments of the battery pack provided in this application, the projection of the through hole and the projection of the connection hole are separate along a first direction.

[0019] In some embodiments of this application, the battery pack further includes a circuit board that is electrically connected to a busbar component. The circuit board is located on a second side, enabling it to connect to the battery cells via the busbar component, thereby achieving intelligent management and maintenance of the battery cells.

[0020] In some embodiments of the present application, the battery pack is provided with a bracket located between the battery cell and the battery casing. A support post is provided on the inner wall of the battery casing that abuts against the bracket. The battery casing presses the bracket against the battery cell through the support post, so that the connection between the battery cell and the bracket is firm.

[0021] This application also provides an electrical device that has a high level of safety.

[0022] To achieve this objective, the present application adopts the following technical solution:

[0023] Secondly, this application provides an electrical device that includes a battery pack provided by any of the above-mentioned technical solutions, the battery pack being used to provide electrical energy.

[0024] The technical solutions provided by the embodiments of this disclosure bring at least the following beneficial effects:

[0025] This application provides a battery pack including a battery casing, a bracket, multiple battery cells, and a first adhesive material. The multiple battery cells and the bracket are housed within the battery casing. The bracket has connection holes for filling the first adhesive material, allowing at least two battery cells to be bonded to the bracket through the connection holes. This achieves the fixation of at least two battery cells on the bracket, enabling one battery cell to be locked to other battery cells through the bracket. This effectively prevents the battery cells from moving, thereby effectively reducing the impact on the battery cells, improving the protective performance of the battery pack, helping to reduce the occurrence of safety accidents, and enhancing battery safety.

[0026] This application also provides an electrical device that has a high level of safety because it includes the battery pack provided by the above-described technical solution.

[0027] 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

[0028] 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:

[0029] Figure 1 This is a split view of the battery pack provided in some embodiments of this application;

[0030] Figure 2 A top view of a battery cell provided in some embodiments of this application;

[0031] Figure 3 A schematic diagram of the arrangement of the brackets provided in some embodiments of this application from a first-view perspective;

[0032] Figure 4 A schematic diagram of the arrangement of the brackets provided in some embodiments of this application from a second perspective;

[0033] Figure 5 A third-view schematic diagram of the arrangement of the brackets provided in some embodiments of this application;

[0034] Figure 6 This is a schematic diagram showing the connection between the bracket and the battery cell provided in some embodiments of this application;

[0035] Figure 7 This is a schematic diagram showing the connection of the bracket and the busbar component provided in some embodiments of this application;

[0036] Figure 8 This is a schematic diagram of the battery cell arrangement provided in some embodiments of this application;

[0037] Figure 9 A schematic diagram showing the connection of the bracket and the battery cell via a first adhesive material in some embodiments of this application;

[0038] Figure 10 This is a schematic diagram of the structure of the first housing provided in some embodiments of this application;

[0039] Figure 11 This is a schematic diagram of an electrical device provided in some embodiments of this application.

[0040] The reference numerals in the detailed embodiments are as follows:

[0041] 1. Battery cell; 101. Electrode terminal; 102. Battery cell housing; 12. First battery cell group; 13. Second battery cell group; 14. Third battery cell group; 15. Fourth battery cell group; 2. Circuit board; 3. Busbar component; 5. Bracket; 50. Support wall; 501. Connecting hole; 5011. Connecting sub-hole; 50111. First hole; 50112. Second hole; 50113. Third hole; 5012. Recess; 5013. Through hole; 5 0131, First through hole; 50132, Second through hole; 5014, Receptacle; 5015, First protrusion; 502, First adhesive material; 1001, First side; 1002, Second side; 1011, Positive terminal; 1012, Negative terminal; 105, Second protrusion; 6, Battery housing; 601, First housing; 602, Second housing; 61, Limiting post; 2000, Battery pack; 3000, Electrical device. Detailed Implementation

[0042] 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.

[0043] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0044] 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", "circumferential", etc., 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 do not 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.

[0045] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0046] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the 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.

[0047] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] Currently, judging from market trends, battery packs are being used more and more widely. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in communication equipment, military equipment, and aerospace. As the application areas of battery packs continue to expand, the market demand is also constantly increasing.

[0049] The technical solution of a battery pack and power device provided in this application will be further described below through specific embodiments.

[0050] Please refer to Figure 1 , Figure 1 This is a split view of a battery pack provided in some embodiments of this application. Some embodiments of this application provide a battery pack including a battery casing 6, a circuit board 2, a bracket 5, multiple busbar components 3, and multiple battery cells 1, such as... Figure 2 As shown, each battery cell 1 includes an electrode terminal 101, a battery cell housing 102, and an electrode assembly (not shown in the figure) disposed within the battery cell housing 102. Multiple busbars 3 are connected to a bracket 5. Multiple battery cells 1 are connected to each other through multiple busbars 3. The bracket 5 is disposed between multiple battery cells 1 and the battery housing 6. The circuit board 2 is disposed between the bracket 5 and the battery housing 6 and is electrically connected to the battery cells 1 through the busbars 3. The circuit board 2, the bracket 5, the multiple busbars 3, and the multiple battery cells 1 are all housed within the battery housing 6.

[0051] In some embodiments, the electrode assembly includes a positive electrode, a negative electrode, and a separator between the positive and negative electrode. The positive electrode, negative electrode, and separator are wound into a spiral structure or stacked into a laminated structure. The battery cell 1 includes, but is not limited to, lithium-ion cells, sodium-ion cells, etc.

[0052] In some embodiments, the electrode terminal 101 includes a positive terminal 1011 and a negative terminal 1012, which are disposed on the same end of the battery cell 1 facing the circuit board 2. The circuit board 2 can be connected to the positive and negative terminals of the battery cell 1 by placing it at one end of the battery cell 1. The circuit board 2 may include a battery management system capable of intelligently managing and maintaining multiple battery cells 1. In other embodiments, the positive terminal 1011 and the negative terminal 1012 are disposed at opposite ends of the battery cell 1. Those skilled in the art can adjust the positions of the positive terminal 1011 and the negative terminal 1012 within the battery cell 1 according to actual conditions.

[0053] In some embodiments, a receiving space is formed in the battery housing 6. The battery housing 6 includes a first housing 601 and a second housing 602 connected to each other. The circuit board 2, the bracket 5, multiple busbar components 3, and multiple battery cells 1 are all accommodated in the space formed after the first housing 601 and the second housing 602 are connected. The multiple battery cells 1 are disposed between the bracket 5 and the second housing 602, and the circuit board 2 is disposed between the bracket 5 and the first housing 601. The first housing 601 and the second housing 602 can be connected to each other by snap-fitting, by adhesive bonding, or by fastening with fasteners such as bolt assemblies. Those skilled in the art can choose the connection method of the first housing 601 and the second housing 602 according to the actual situation.

[0054] In some embodiments, the inner wall of the first housing 601 abuts against the bracket 5, so that the bracket 5 and the battery cell 1 are integrally connected to the second housing 602, which facilitates fixation. Here, "abutting" means that the inner wall of the first housing 601 is in direct contact with the bracket 5, and there is an interaction force between the two.

[0055] In some embodiments, such as Figures 3 to 9As shown, the bracket 5 is provided with a connection hole 501, which is used to fill the first adhesive material 502. Filling the connection hole 502 with the first adhesive material 502 can effectively reduce the overflow of the first adhesive material 502 and reduce the impact of the first adhesive material 502 on surrounding components. At least two battery cells 1 are connected to the bracket 5 through the first adhesive material 502 filled in the connection hole 501. At least one of the at least two battery cells 1 and the bracket 5 is connected to the inner wall of the battery casing 6, so that the whole consisting of at least two battery cells 1 and the bracket 5 is connected to the battery casing 6. This achieves mutual fixation between the whole consisting of at least two battery cells 1 and the bracket 5 and the battery casing 6, restricts the movement of the whole consisting of at least two battery cells 1 and the bracket 5, reduces the possibility of collision with other components due to movement, improves the protective performance of the battery pack, reduces the occurrence of safety accidents, and enhances the safety of the battery pack. Optionally, the first adhesive 502 can be glue. The glue has a certain degree of fluidity, allowing the operator to easily fill the connection hole 501 to bond the battery cell 1 to the bracket 5. Optionally, the glue may include sealant, foam, potting compound, etc.

[0056] In some embodiments, such as Figures 3-7 As shown, the bracket 5 includes a support wall 50, through which a connecting hole 501 penetrates. The support wall 50 includes a first side 1001 and a second side 1002 arranged opposite each other along a first direction. The second side 1002 is away from the battery cell housing 102, and the circuit board 2 is disposed on the second side 1002. A recess 5012 is provided on the first side 1001 of the support wall 50 near the battery cell 1, and the end of the battery cell 1 near the bracket 5 is disposed in the recess 5012. Optionally, the battery cell 1 is connected to the bracket 5 by a second adhesive. In this application, the second adhesive can be glue, which has a certain fluidity, allowing the operator to easily fill the recess 5012 with glue to position the end of the battery cell 1 in the recess 5012. Optionally, the glue may include sealant, foam, potting compound, double-sided tape, etc.

[0057] In some embodiments, the recess 5012 communicates with the connecting hole 501, so that when the battery cell 1 is inserted into the recess 5012 on the first side 1001, the first adhesive material 502 can fill the connecting hole 501 from the side away from the battery cell 1, making it convenient for the first adhesive material 502 to connect the bracket 5 and the battery cell 1, and facilitating the bonding operation. The second adhesive material and the first adhesive material 502 can be the same adhesive material or different adhesive materials. Optionally, when the second adhesive material and the first adhesive material 502 are the same adhesive material, when the first adhesive material 502 is filled into the connecting hole 501, the first adhesive material 502 can flow into the recess 5012, and the first adhesive material 502 flowing into the recess 5012 can act as the second adhesive material to position the battery cell 1 in the recess 5012. In some embodiments, a gap is provided between the portion of the battery cell 1 inserted into the recess 5012 and the bottom surface of the recess 5012, allowing the first adhesive material 502 to flow through the gap to the space between the bottom surface of the recess 5012 and the battery cell 1. Optionally, the battery cell 1 can be bonded to the recess 5012 using a second adhesive material, and then the first adhesive material 502 can be placed in the connection hole 501. The second adhesive material and the first adhesive material can be the same glue or different glues.

[0058] In some embodiments, such as Figure 3 and Figure 5 As shown, a through hole 5013 is provided on the recess 5012. When viewed along the first direction, the electrode terminal 101 of the battery cell 1 is located in the through hole 5013. When viewed along the first direction, the electrode terminal 101 is located in the through hole 5013. This can be because all of the electrode terminals 101 of the battery cell 1 are located in the through hole 5013; or a portion of the electrode terminals 101 of the battery cell 1 is located in the through hole 5013, and another portion extends outward from the through hole 5013; or the electrode terminals 101 of the battery cell 1 extend into the through hole 5013, and the projection of the electrode terminals 101 along the first direction coincides with the projection of the through hole 5013 along the first direction.

[0059] In some embodiments, the busbar 3 is disposed on the second side 1002, and the multiple battery cells 1 are electrically connected through the busbar 3. The multiple battery cells 1 can be connected in series, in parallel, or in a mixed manner through the busbar 3. A mixed connection means that the multiple battery cells 1 are connected in both series and parallel.

[0060] In some embodiments, the support 5 is provided with a receiving groove 5014, which is located on the second side 1002, and the busbar 3 is located in the receiving groove 5014. The circuit board 2 and the busbar 3 are both located on the second side 1002 of the support 5. The cell housing 102 and the circuit board 2 are respectively placed on opposite sides of the support 5. The circuit board 2 and the busbar 3 are both close to the electrode terminals 101 of the cell 1, which not only facilitates the arrangement of components in the battery pack, but also shortens the distance between the circuit board 2 and the electrode terminals 101 of the cell 1, and helps to reduce the use of the busbar 3 and the conductive element 4.

[0061] In some embodiments, such as Figure 4 , Figure 6 and Figure 9 As shown, the support 5 includes a plurality of second protrusions 105, which are disposed on the second side 1002, such that the adhesive material filling the connection hole 501 can be restricted from flowing out by the protruding second protrusions 105. Along the first direction, the projections of the plurality of second protrusions 105 form a closed area, and the projection of the connection hole 501 is located within the closed area formed by the projections of the second protrusions 105.

[0062] In some embodiments, such as Figures 3 to 5 As shown, the through hole 5013 includes a first through hole 50131 and a second through hole 50132. Two battery cells 1 are arranged adjacent to each other. The positive terminal 1011 or negative terminal 1012 of one battery cell 1 is arranged in the first through hole 50131, and the positive terminal 1011 or negative terminal 1012 of the other battery cell 1 is arranged in the second through hole 50132. The adjacent battery cells can be connected in series or in parallel.

[0063] Optionally, along the first direction, the projection of the through hole 5013 and the projection of the connecting hole 501 are separate, so that the through hole 5013 and the connecting hole 501 are not connected, which can reduce the possibility that the first adhesive material 502 in the connecting hole 501 will adhere to the electrode terminal 101.

[0064] Optionally, such as Figure 6As shown, the reservoir 5014 connects between the first through hole 50131 and the second through hole 50132 corresponding to different battery cells 1. The busbar 3 placed in the reservoir 5014 can connect the battery cells 1 in series or in parallel. The busbar 3 is disposed in the reservoir 5014, which not only facilitates the installation of the busbar 3, but also reduces the thickness occupied by the busbar 3 in the first direction. Optionally, part of the reservoir 5014 connects between the first through hole 50131 corresponding to different battery cells 1, and part of the reservoir 5014 connects between the second through hole 50132 corresponding to different battery cells 1, so that the busbar 3 placed in the reservoir 5014 can connect the battery cells 1 in parallel. Optionally, some of the troughs 5014 are connected between the first through holes 50131 corresponding to different battery cells 1, some of the troughs 5014 are connected between the second through holes 50132 corresponding to different battery cells 1, and some of the troughs 5014 are connected between the first through holes 50131 and the second through holes 50132 corresponding to different battery cells 1, so that the busbar 3 placed in the troughs 5014 can connect the battery cells 1 together.

[0065] In some embodiments, such as Figure 8 As shown, some of the multiple battery cells 1 are arranged along the second direction to form a first battery cell group 12, some of the multiple battery cells 1 are arranged along the second direction to form a second battery cell group 13, some of the multiple battery cells 1 are arranged along the second direction to form a third battery cell group 14, and some of the multiple battery cells 1 are arranged along the second direction to form a fourth battery cell group 15. The first battery cell group 12, the second battery cell group 13, the third battery cell group 14 and the fourth battery cell group 15 are arranged along the third direction.

[0066] In some embodiments, the connection hole 501 includes a first hole 50111 and a second hole 50112, which are disposed separately when viewed along a first direction. When viewed along the first direction, at least one portion of the cell housing 102 of a battery cell 1 is located in the first hole 50111, and at least one portion of the cell housing 102 of a battery cell 1 is located in the second hole 50112, such that the first adhesive material 502 filled in the first hole 50111 and the second hole 50112 can connect the cell housing 102 and the support wall 50 of at least two battery cells 1. The cured first adhesive material 502 connects at least two adjacent battery cells 1 to form a whole, reducing the probability of relative movement between adjacent battery cells 1 and improving the safety of the battery pack.

[0067] like Figures 4 to 5As shown, the connection hole 501 also includes a third hole 50113. Viewed along the first direction, the projections of the first hole 50111, the second hole 50112, and the third hole 50113 are opposite. Viewed along the first direction, at least one portion of the cell housing 102 of the battery cell 1 is located within the third hole 50113. A first adhesive material 502 filling the first hole 50111, the second hole 50112, and the third hole 50113 connects the cell housings 102 and the support walls 50 of at least three battery cells 1. Figure 6 As shown, along the first direction, the projected portions of the three cell housings 102 are respectively located within the projections of the first hole 50111, the second hole 50112, and the third hole 50113 of the same connecting hole 501. This facilitates the bonding of the three cell housings 102 to the support 5 via the first adhesive material 502 filled in the first hole 50111, the second hole 50112, and the third hole 50113. Figure 9 As shown, the cured first adhesive material 502 connects the three adjacent battery cells 1 to form a whole, reducing the probability of relative movement between adjacent battery cells 1 and improving the safety of the battery pack.

[0068] In some embodiments, along the second direction, the support wall 50 is connected to two adjacent cell housings 102 in the first cell group 12 through the first hole 50111 and the second hole 50112, and the support wall 50 is connected to one cell housing 102 in the second cell group 13 through the third hole 50113. The support wall 50 is connected to two adjacent cell housings 102 in the fourth cell group 15 through the first hole 50111 and the second hole 50112, and the support wall 50 is connected to one cell housing 102 in the third cell group 14 through the third hole 50113. This allows multiple cells 1 in the battery pack to be connected to the support wall 50 to form a whole through the first adhesive material 502, reducing the probability of relative movement between adjacent cells 1 and improving the safety of the battery pack.

[0069] In some embodiments, the connecting holes 501 are evenly distributed along the second direction, which helps to ensure that the strength distribution of the bracket 5 is uniform.

[0070] In some embodiments, multiple recesses 5012 are provided, and connecting holes 501 are provided at the connection points of adjacent recesses 5012. A first protrusion 5015 is also provided at the connection points of adjacent recesses 5012. The first protrusion 5015 extends into the gap between adjacent battery cells 1, thereby restricting the movement of the battery cells 1.

[0071] In some embodiments, when viewed along a first direction, the projections of the first hole 50111, the second hole 50112, and the third hole 50113 of the same connecting hole 501 are separate. A first protrusion 5015 is positioned between the first hole 50111, the second hole 50112, and the third hole 50113, separating the first hole 50111, the second hole 50112, and the third hole 50113. The first protrusion 5015 can strengthen the connection between adjacent recesses 5012, which is beneficial to enhancing the structural strength of the bracket 5.

[0072] In some embodiments, such as Figure 10 As shown, a limiting post 61 is provided on the inner wall of the first housing 601. The limiting post 61 is positioned towards the circuit board 2 and is used to limit the position of the circuit board 2. This restricts the movement of the circuit board 2 when the battery pack is subjected to vibration, collision, or other forces, thereby reducing the risk of failure.

[0073] Optionally, the inner wall of the first housing 601 abuts against the bracket 5, so that the end of the assembly consisting of the bracket 5 and the battery cell 1 away from the first housing 601 abuts against the second housing 602 for fixation. Optionally, a support post is provided on the inner wall of the first housing 601, and the first housing 601 abuts against the bracket 5 through the support post, ensuring the firmness of the connection between the bracket 5 and the battery housing 6, and effectively reducing the shaking of the assembly consisting of the bracket 5 and the battery cell 1 in the accommodating space.

[0074] Some embodiments of this application also provide an electrical device that includes a battery pack provided by the above-described technical solution, the battery pack being used to provide electrical energy to the electrical device.

[0075] like Figure 11 As shown, this application embodiment provides an electrical device 3000 that uses a battery pack 2000 as a power source. The electrical device 3000 can be a mobile phone, portable device, laptop computer, electric toy, power tool, electric vehicle, etc. Power tools include metal cutting power tools, cleaning tools, etc., such as electric drills, electric wrenches, vacuum cleaners, robot vacuum cleaners, etc. This application embodiment does not impose any special limitations on the above-mentioned electrical device 3000.

[0076] 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 pack, characterized in that, include: Battery casing; Multiple battery cells are housed within the battery casing, and each battery cell includes a battery cell casing, electrode terminals, and an electrode assembly disposed within the battery cell casing; A bracket is housed within the battery casing. The bracket has a connection hole for filling with a first adhesive material. The bracket includes a support wall, through which the connection hole passes. The support wall includes a first side and a second side disposed opposite to each other along a first direction. The second side is away from the battery cell casing, and a circuit board is disposed on the second side. The connecting hole includes a first hole, a second hole, and a third hole. When viewed along the first direction, the projections of the first hole, the second hole, and the third hole of the same connecting hole are separate. At least one portion of the battery cell housing is located in the first hole, at least one portion of the battery cell housing is located in the second hole, and at least one portion of the battery cell housing is located in the third hole. The first adhesive material connects the battery cell housings of at least three batteries to the support wall. The support wall includes a recess on the first side, and the battery cell is at least partially disposed in the recess; there are multiple recesses, and a first protrusion is provided at the connection between adjacent recesses, with a portion of the first protrusion located between adjacent battery cells; The first protrusion separates the first hole, the second hole, and the third hole.

2. The battery pack according to claim 1, characterized in that, A portion of the multiple battery cells are arranged along a second direction to form a first battery cell group, and a portion of the multiple battery cells are arranged along the second direction to form a second battery cell group. The first adhesive material connects at least one battery cell in the first battery cell group and at least one battery cell in the second battery cell group.

3. The battery pack according to claim 1, characterized in that, The bracket includes a second protrusion, and along the first direction, the projection of the connecting hole is located within the area formed by the projection of the second protrusion.

4. The battery pack according to claim 1, characterized in that, The recess has a through hole, and when viewed along the first direction, the electrode terminal is located in the through hole.

5. The battery pack according to claim 4, characterized in that, The battery pack also includes a current-combining component, which is located on the second side, and the battery cells are connected to each other through the current-combining component.

6. The battery pack according to claim 5, characterized in that, The through hole includes a first through hole and a second through hole. The electrode terminal includes a positive terminal and a negative terminal. The positive terminal and the negative terminal are disposed at the same end of the battery cell. One of the positive terminal and the negative terminal is disposed in the first through hole, and the other of the positive terminal and the negative terminal is disposed in the second through hole.

7. The battery pack according to claim 6, characterized in that, The second side is provided with a receiving groove, and the confluence component is placed in the receiving groove, which connects the first through hole and the second through hole.

8. The battery pack according to claim 4, characterized in that, Along the first direction, the projection of the through hole and the projection of the connecting hole are separate.

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

Images