Battery cell support, battery module, battery and electric device

Abstract

The application discloses a battery cell support, a battery module, a battery and a power utilization device. The battery cell support comprises a support body and an insulating piece. The support body is provided with at least one first channel in a first direction. The insulating piece is arranged on the outer surface of the support body and covers part or all of the outer surface. The surface of the insulating piece away from the support body can fix the battery cell. By arranging the first channel on the support body and fixing the battery cell on the support body around the first channel, when the battery cell emits heat, the heat can flow out through the first channel, so that the temperature of the battery cell itself and the surrounding environment of the battery cell can be reduced, and thus the battery safety problem caused by heat accumulation during the use of the battery can be relieved.

Description

Technical Field

[0001] This application relates to the field of batteries, and more particularly to a battery cell support, a battery module, a battery, and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] During the charging and discharging process, the individual cells in existing batteries emit heat, which accumulates over time, thus affecting the battery's safety performance. Summary of the Invention

[0004] In view of the above problems, this application provides a battery cell support, a battery module, a battery, and an electrical device, which can alleviate battery safety problems caused by heat accumulation during battery use.

[0005] In a first aspect, this application provides a battery cell support, comprising: a frame and an insulating member, wherein the frame has at least one first channel along a first direction, the insulating member is disposed on the outer surface of the frame, the insulating member covers part or all of the outer surface, and the surface of the insulating member facing away from the frame is capable of fixing the battery cell.

[0006] In the technical solution of this application embodiment, by setting a first channel on the frame and fixing the battery cell on the frame around the first channel, when the battery cell dissipates heat, the heat flows out through the first channel, thereby reducing the temperature of the battery cell itself and the surrounding environment, thereby alleviating the battery safety problem caused by heat accumulation during battery use.

[0007] In some embodiments, the outer surface of the frame is provided with a connecting portion around the first direction. The surface of the connecting portion facing away from the frame is a connecting surface. The connecting surface has at least one receiving recess, and the inner wall shape of the receiving recess is adapted to the shape of a local surface of the battery cell. The insulating member is disposed on the surface of the connecting portion facing away from the frame. By setting the shape of the receiving recess to adapt to the shape of a local surface of the battery cell, when the battery cell is fixed in the receiving recess, there is no gap between the battery cell and the frame, thereby making the connection between the battery cell and the battery cell support more secure.

[0008] In some embodiments, the accommodating recess is elongated along the first direction and has a concave arcuate shape around the first direction; and / or, the connecting portion is provided with a plurality of accommodating recesses, which are evenly distributed on the connecting surface of the connecting portion. By having the accommodating recesses elongated along the first direction and having a concave arcuate shape around the first direction, the battery cell bracket can be adapted to connect cylindrical battery cells and can more firmly fix the cylindrical battery cells; by providing a plurality of accommodating recesses on the connecting portion, which are evenly distributed on the outer surface of the connecting portion, the battery cell bracket can fix multiple battery cells, and the heat dissipation effect after fixing multiple battery cells is more uniform, resulting in a better visual effect.

[0009] In some embodiments, the connecting portion is a heat-conducting element; and / or, the connecting portion is integrally formed with the frame; and / or, a second channel extending along the first direction is provided between the connecting portion and the frame. By using the connecting portion as a heat-conducting element, the heat dissipated by the battery cell fixed on the battery cell bracket can be directed more and faster to the connecting portion near the first channel, and then dissipated through the first channel, thereby further reducing the temperature of the battery cell itself and its surrounding environment. Integrating the connecting portion with the frame improves the structural strength of the battery cell bracket. The second channel extending along the first direction between the connecting portion and the frame allows the heat dissipated by the battery cell fixed on the battery cell bracket to be dissipated simultaneously through both the first and second channels, further reducing the temperature of the battery cell itself and its surrounding environment.

[0010] In some embodiments, the insulating element includes a first insulating strip and a second insulating strip. The first insulating strip is disposed around the connecting surface surrounding the connecting portion, and the second insulating strip is disposed around the connecting surface surrounding the connecting portion. The second insulating strip and the first insulating strip are spaced apart from each other. The first and second insulating strips can separate the battery cells from the frame, thereby preventing the frame from becoming electrified.

[0011] In some embodiments, the surface of the first insulating strip opposite to the connecting portion has a first fixing recess adapted to the local surface shape of the battery cell, and the surface of the second insulating strip opposite to the connecting portion has a second fixing recess adapted to the local surface shape of the battery cell. By adapting the first fixing recess on the first insulating strip and the second fixing recess on the second insulating strip to the local surface shape of the battery cell, there is no gap between the battery cell and the first and second insulating strips after it is fixed to the battery cell support, thereby improving the stability of the battery cell and the battery cell support structure.

[0012] In some embodiments, the connecting portion has a first snap-fit ​​portion at each end along the first direction, the first insulating strip has a second snap-fit ​​portion, and the second insulating strip has a third snap-fit ​​portion. The second snap-fit ​​portion and the third snap-fit ​​portion respectively snap-fit ​​with the first snap-fit ​​portions at both ends of the connecting portion. The first insulating strip can be fixed to one end of the connecting portion by snapping with the second snap-fit ​​portion and the first snap-fit ​​portion at one end of the connecting portion, and the second insulating strip can be fixed to the other end of the connecting portion by connecting with the third snap-fit ​​portion and the first snap-fit ​​portion at the other end of the connecting portion. This snap-fit ​​method also ensures high connection efficiency between the insulating component and the connecting portion.

[0013] In some embodiments, the first snap-fit ​​portion is a snap-fit ​​through hole; the second snap-fit ​​portion and the third snap-fit ​​portion are both snap-fit ​​posts, and the free end of the snap-fit ​​post is provided with a hook portion. The cooperation of the snap-fit ​​through hole, the snap-fit ​​post and the hook portion on the snap-fit ​​post can realize the rapid connection between the first insulating strip, the second insulating strip and the connecting portion, thereby improving the assembly efficiency of the battery cell bracket.

[0014] In some embodiments, the frame is a heat-conducting component; and / or, the frame is provided with a first flange and a second flange at both ends along the first direction, the first flange being provided with a first connecting structure and the second flange being provided with a second connecting structure. By using the frame as a heat-conducting component, the heat from the battery cell itself and its surrounding environment, fixed to the battery cell bracket, can be directed to the frame more effectively and quickly, and then dissipated through the first channel on the frame; the first connecting structure of the first flange and the second connecting structure of the second flange allow for more convenient fixing of the battery cell bracket to the battery module housing.

[0015] Secondly, this application provides a battery module, including: a battery cell and a battery cell bracket as described in any of the above solutions, wherein the battery cell is connected to the surface of the battery cell bracket with an insulating member facing away from the bracket body.

[0016] Thirdly, this application provides a battery, including: the battery module described in any of the above solutions.

[0017] Fourthly, this application provides an electrical device comprising: a battery as described in any of the above embodiments.

[0018] 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

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. 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:

[0020] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0021] Figure 2 This is an exploded structural diagram of a battery according to some embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a battery module according to some embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the structure of a battery module according to some embodiments of this application;

[0024] Figure 5 This is an exploded view of the battery module according to some embodiments of this application;

[0025] Figure 6 This is an exploded structural diagram of the battery cell support structure of some embodiments of this application;

[0026] Figure 7 This is an enlarged structural diagram of region A of the battery cell support in some embodiments of this application;

[0027] Figure 8 This is a schematic diagram of the structure of a battery cell support according to some embodiments of this application;

[0028] Figure 9 This is a schematic cross-sectional view of the battery cell support structure along line AB in some embodiments of this application;

[0029] Figure 10 This is a schematic diagram of the structure of the first insulating strip of the battery cell bracket in some embodiments of this application;

[0030] Figure 11 This is an enlarged structural schematic diagram of region B of the battery cell support in some embodiments of this application;

[0031] Figure 12 This is a partially enlarged structural diagram of region B of the battery cell support in some embodiments of this application.

[0032] The reference numerals in the detailed embodiments are as follows:

[0033] 1000 - Vehicles;

[0034] 100 - Battery, 200 - Controller, 300 - Motor;

[0035] 10-Box body, 11-First part, 12-Second part;

[0036] 20 - Battery module; 21 - Battery cell;

[0037] 22-Battery cell bracket, 221-Frame, 2211-First channel, 2212-Connecting part, 2213-Accommodating recess, 2214-First snap-fit ​​part;

[0038] 222-Insulating component, 222a-First insulating strip, 222b-Second insulating strip, 2221-Second snap-fit ​​part, 2222-Third snap-fit ​​part, 2223-Second snap-fit ​​through hole, 2224-Second snap-fit ​​post, 2225-Second hook-fit part, 2226-First sub-end, 2227-Second sub-end, 2228-First sub-hook-fit part, 2229-Second sub-hook-fit part. Detailed Implementation

[0039] 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.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0041] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0042] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0044] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0045] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0046] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0047] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0048] The inventors have noticed that as the battery is charged and discharged, the individual cells inside the battery emit heat. The accumulation of heat can cause the operating temperature of the individual cells to be too high, which can seriously affect the battery's lifespan. Furthermore, the continuous high temperature can easily trigger thermal runaway of the battery, causing incalculable losses and endangering personal safety.

[0049] To alleviate the problem of heat accumulation in individual battery cells, the applicant discovered that a battery cell support can be installed at the location where the battery cells are concentrated inside the battery. A heat dissipation channel with openings at both ends can be set on the battery cell support, and the battery cells can be surrounded on the outer surface of the battery cell support around the heat dissipation channel. For example, the battery cell support can be a hollow structure, and the battery cells can be fixed to the outer wall of the battery cell support. When the battery cells emit heat, the heat can be dissipated through the heat dissipation channel under the natural airflow.

[0050] Based on the above considerations, in order to solve the battery safety problem caused by heat accumulation during the use of battery cells, the inventors, after in-depth research, designed a battery cell support. The heat dissipation channel inside the battery cell support removes the heat emitted by the battery cell, thereby reducing the amount of heat accumulation during battery use.

[0051] The battery cell support disclosed in this application embodiment can be connected to the battery cell to form a battery module. This battery module can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft, and the power system of the electrical device can be composed of batteries equipped with the battery module. This helps with battery heat dissipation, improves battery safety, and extends battery life.

[0052] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0053] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0054] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to supply power to the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300; for example, the controller 200 is used to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0055] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0056] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery 100 provided in some embodiments of this application. The battery 100 includes a housing 10 and a battery module 20, with the battery module 20 housed within the housing 10. The housing 10 provides a space for the battery module 20 and can have various structures. In some embodiments, the housing 10 may include a first portion 11 and a second portion 12, which overlap each other, jointly defining a space for accommodating the battery module 20. The second portion 12 may be a hollow structure with one open end, and the first portion 11 may be a plate-like structure, covering the open side of the second portion 12 so that the first portion 11 and the second portion 12 jointly define the space. Alternatively, the first portion 11 and the second portion 12 may both be hollow structures with one open side, with the open side of the first portion 11 covering the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder, a cuboid, etc.

[0057] In battery 100, there can be multiple battery modules 20, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery modules 20 are connected in both series and parallel connections. Multiple battery modules 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery modules 20 is housed within housing 10. Battery 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery modules 20.

[0058] Please refer to Figure 3 , Figure 3 This is a top view of a battery module 20 provided in some embodiments of this application. The battery module 20 includes: battery cells 21. In the battery module 20, there can be multiple battery cells 21, which can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells 21 are connected in both series and parallel connections. Multiple battery cells 21 can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of the multiple battery cells 21 is housed within a housing 10.

[0059] Each battery cell 21 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 21 can be cylindrical, flat, cuboid, or other shapes.

[0060] According to some embodiments of this application, refer to Figure 4 Please refer to further details. Figures 5 to 12 , Figure 4 This is a schematic diagram of the structure of a battery module provided in some embodiments of this application. Figure 5 This is an exploded view of the battery module provided in some embodiments of this application. Figure 6 This is an exploded structural diagram of a battery cell support provided in some embodiments of this application. Figure 7 This is an enlarged structural diagram of region A of the battery cell support provided in some embodiments of this application. Figure 8 This is a schematic diagram of the structure of a battery cell support provided in some embodiments of this application. Figure 9 This is a schematic cross-sectional view of the battery cell support structure along line AB provided in some embodiments of this application. Figure 10 This is a schematic diagram of the structure of the first insulating strip of the battery cell holder provided in some embodiments of this application. Figure 11 This is an enlarged structural diagram of region B of the battery cell support provided in some embodiments of this application. Figure 12 This is a partially enlarged structural diagram of region B of a battery cell support provided in some embodiments of this application. This application provides a battery cell support 22, which forms a battery module 20 after fixing a battery cell 21. The battery cell support 22 includes a frame 221 and an insulating member 222. The frame 221 has at least one first channel 2211 along a first direction. The insulating member 222 is disposed on the outer surface of the frame 221, covering part or all of the outer surface. The surface of the insulating member 222 facing away from the frame 221 can fix the battery cell 21.

[0061] The frame 221 has at least one first channel 2211 along the first direction. The first channel 2211 refers to a channel with openings at both ends. That is, the first channel 2211 has a first opening and a second opening at both ends along the first direction, respectively. Here, the first channel 2211 forms a heat dissipation channel for the battery cell support 22. The inner wall of the first channel 2211 can be a smooth curved inner wall, a smooth zigzag inner wall, a honeycomb-shaped concave-convex inner wall, or an inner wall of other shapes. No specific limitation is made here.

[0062] The frame 221 has at least one first channel 2211 along the first direction. In other words, the frame 221 can have one first channel 2211 or multiple first channels 2211 along the first direction. For example: see Figure 6As shown, the frame 221 has a first channel 2211 along a first direction to form a hollow frame 221. When there are multiple first channels 2211, the dimensions of the multiple first channels 2211 along a second direction perpendicular to the first direction can be the same or different. When there are multiple first channels 2211, the multiple first channels 2211 can be evenly arranged or unevenly arranged.

[0063] The insulating component 222 refers to a structural component made of insulating material, which is disposed on the outer surface of the frame 221, that is, the insulating component 222 is disposed on the surface of the frame 221 facing away from the first channel 2211. The insulating component 222 covers part or all of the outer surface, that is, the insulating component 222 is disposed on part or all of the surface of the frame 221 facing away from the first channel 2211, and the surface of the insulating component 222 facing away from the frame 221 can fix the battery cell 21, thereby preventing the electricity on the battery cell 21 from being conducted to the frame 221.

[0064] By setting a first channel on the frame and fixing the battery cells to the frame around the first channel, when the battery cells dissipate heat, the heat flows out through the first channel, thereby reducing the temperature of the battery cells themselves and the surrounding environment. This can alleviate battery safety issues caused by heat accumulation during battery use.

[0065] According to some embodiments of this application, optionally, please continue to refer to Figures 6 to 8 A connecting portion 2212 is provided around the outer surface of the frame 221 in the first direction. The surface of the connecting portion 2212 facing away from the frame 221 is the connecting surface. The connecting surface has at least one receiving recess 2213. The inner wall shape of the receiving recess 2213 is adapted to the shape of a local surface of the battery cell 21. An insulating member 222 is provided on the surface of the connecting portion 2212 facing away from the frame 221.

[0066] The connecting portion 2212 is arranged in a ring around the outer surface of the frame 221 in a first direction, that is, the connecting portion 2212 extends circumferentially around the first direction. The connecting surface has at least one receiving recess 2213, the inner wall shape of which is adapted to the shape of a portion of the surface of the battery cell 21. In other words, if the battery cell 21 is placed in the receiving recess 2213, the battery cell 21 can fit snugly against the inner wall of the receiving recess 2213. Here, the battery cell 21 can be fixed in the receiving recess 2213 with insulating adhesive.

[0067] By adapting the shape of the receiving recess to the local surface shape of the battery cell, there is no gap between the battery cell and the frame after the battery cell is fixed in the receiving recess, thus making the connection between the battery cell and the battery cell support more secure.

[0068] According to some embodiments of this application, optionally, please continue to refer to Figures 6 to 8 The accommodating recess 2213 is elongated along the first direction and has a concave arc shape around the first direction; and / or, the connecting portion 2212 is provided with a plurality of accommodating recesses 2213, which are evenly distributed on the connecting surface of the connecting portion 2212.

[0069] The accommodating recess 2213 is elongated along the first direction and has a concave arc shape around the first direction. That is, the inner wall shape of the accommodating recess 2213 is adapted to the local surface shape of the cylindrical battery cell 21, so that the battery cell support 22 in this embodiment can be used to connect the cylindrical battery cell 21.

[0070] The connecting part 2212 is provided with a plurality of receiving recesses 2213, which are evenly distributed on the connecting surface of the connecting part 2212. That is, the outer surface of a battery cell bracket 22 can fix a plurality of battery cells 21, and the plurality of battery cells 21 can be evenly arranged.

[0071] The accommodating recess is elongated along the first direction and has a concave arc shape around the first direction, which allows the battery cell bracket to be used to connect cylindrical battery cells and to fix the cylindrical battery cells more firmly. The connecting part is provided with multiple accommodating recesses, which are evenly distributed on the outer surface of the connecting part, so that the battery cell bracket can fix multiple battery cells, and the heat dissipation effect after fixing multiple battery cells is more uniform and the visual effect is better.

[0072] According to some embodiments of this application, optionally, please continue to refer to Figures 6 to 8 The connecting part 2212 is a heat-conducting component; and / or, the connecting part 2212 is integrally formed with the frame 221; and / or, a second channel extending in the first direction is provided between the connecting part 2212 and the frame 221.

[0073] The connecting part 2212 is a heat-conducting component, that is, the connecting part 2212 is made of a material with thermal conductivity, such as aluminum. This allows the heat emitted by the battery cell 21 fixed on the battery cell bracket 22 to be conducted to the connecting part 2212 near the first channel 2211 more and faster, and then carried away through the first channel 2211, so as to further reduce the temperature of the battery cell 21 fixed on the battery cell bracket 22 and the surrounding environment.

[0074] The connecting part 2212 is integrally formed with the frame 221. For example, the connecting part 2212 and the frame 221 are integrally injection molded. Integral molding can improve the structural strength after the connecting part 2212 and the frame 221 are connected.

[0075] A second channel extending in the first direction is provided between the connecting part 2212 and the frame 221. The second channel is a channel with openings at both ends. There can be one or more second channels. When the battery cell 21 fixed on the battery cell bracket 22 emits heat, the heat can be dissipated through the second channel and the first channel at the same time, thereby further reducing the temperature of the battery cell 21 fixed on the battery cell bracket 22 and the surrounding environment of the battery cell 21.

[0076] By using the connecting part as a heat-conducting component, the heat emitted by the battery cell fixed on the battery cell bracket can be directed more and faster to the connecting part near the first channel, and then dissipated through the first channel, thereby further reducing the temperature of the battery cell itself and the surrounding environment. By integrally molding the connecting part with the frame, the structural strength of the battery cell bracket can be improved. By providing a second channel extending along the first direction between the connecting part and the frame, the heat emitted by the battery cell fixed on the battery cell bracket can be dissipated through both the first and second channels simultaneously, thereby further reducing the temperature of the battery cell itself and the surrounding environment.

[0077] According to some embodiments of this application, optionally, please continue to refer to Figures 6 to 8 The insulating component 222 includes: a first insulating strip 222a and a second insulating strip 222b. The first insulating strip 222a is arranged in a circle around the connecting surface of the connecting portion 2212, and the second insulating strip 222b is arranged in a circle around the connecting surface of the connecting portion 2212. The second insulating strip 222b and the first insulating strip 222a are spaced apart from each other.

[0078] The first insulating strip 222a and the second insulating strip 222b are spaced apart from each other along the first direction on the outer surface of the connecting portion 2212. When assembling the battery cell 21, insulating adhesive can be filled between the first insulating strip 222a and the second insulating strip 222b to fix the battery cell 21 to the battery cell bracket 22. Here, the insulating adhesive not only provides insulation but also enables the connection between the battery cell 21 and the connecting surface of the connecting portion 2212. Since the insulating adhesive is in a fluid state after filling, the pressing of the battery cell 21 allows the insulating adhesive to align with the corresponding positions of the first insulating strip 222a and the second insulating strip 222b, thereby allowing the battery cell 21 to extend along the first direction after being fixed. Alternatively, an insulating pad can be placed between the first insulating strip 222a and the second insulating strip 222b to achieve insulation between the battery cell 21 and the connecting portion 2212.

[0079] The first and second insulating strips can separate the battery cells from the frame, thereby preventing the frame from becoming electrified.

[0080] According to some embodiments of this application, optionally, please continue to refer to Figures 6 to 8 The surface of the first insulating strip 222a facing away from the connecting portion 2212 has a first fixing recess that matches the local surface shape of the battery cell 21, and the surface of the second insulating strip 222b facing away from the connecting portion 2212 has a second fixing recess that matches the local surface shape of the battery cell 21.

[0081] The shape of the first fixing recess is adapted to the local surface shape of the battery cell 21. When the battery cell 21 is fixed to the battery cell bracket 22, the local surface of the battery cell 21 fits against the first fixing recess. Similarly, the local surface of the battery cell 21 fits against the second fixing recess. Multiple first fixing recesses can be provided on the surface of the first insulating strip 222a away from the connecting portion 2212 to fix multiple battery cells 21. Similarly, multiple second fixing recesses can be provided on the surface of the second insulating strip 222b away from the connecting portion 2212 to fix multiple battery cells 21. Here, the first fixing recess corresponds to the receiving recess 2213, and the second fixing recess corresponds to the receiving recess 2213. For example: see... Figure 6 The first insulating strip 222a and the second insulating strip 222b are respectively provided with a plurality of first fixing recesses and a plurality of second fixing recesses, and the two ends of a receiving recess 2213 correspond to a first fixing recess and a second fixing recess respectively, so that the first fixing recess, the receiving recess 2213 and the second fixing recess extending along the first direction can cooperate to fix a battery cell 21.

[0082] By adapting the first fixing recess on the first insulating strip and the second fixing recess on the second insulating strip to the local surface shape of the battery cell, there is no gap between the battery cell and the first and second insulating strips after the battery cell is fixed on the battery cell bracket, thereby improving the stability of the battery cell and the battery cell bracket structure.

[0083] According to some embodiments of this application, optionally, please continue to refer to Figures 6 to 11 The connecting part 2212 is provided with a first snap-fit ​​part at both ends along the first direction, the first insulating strip 222a is provided with a second snap-fit ​​part 2221, and the second insulating strip is provided with a third snap-fit ​​part 2222; wherein the second snap-fit ​​part 2221 and the third snap-fit ​​part 2222 are respectively snapped with the first snap-fit ​​parts at both ends of the connecting part 2212.

[0084] The first insulating strip can be fixed to one end of the connecting part by engaging the second engaging part and the first engaging part at one end of the connecting part, and the second insulating strip can be fixed to the other end of the connecting part by engaging the third engaging part and the first engaging part at the other end of the connecting part. At the same time, the engaging method makes the connection between the insulating part and the connecting part highly efficient.

[0085] According to some embodiments of this application, optionally, please continue to refer to Figures 6 to 11 The first snap-fit ​​part is a snap-fit ​​through hole, and the second snap-fit ​​part 2221 and the third snap-fit ​​part 2222 are both snap-fit ​​posts, and the free end of the snap-fit ​​post is provided with a hook part.

[0086] The connecting portion 2212 has a first end face and a second end face that are opposite to each other along a first direction. The first end face and the second end face are connected by a connecting surface. The two ends of the connecting portion 2212 are respectively provided with a first snap-fit ​​hole and a second snap-fit ​​hole 2223. The first snap-fit ​​hole connects the first end face and the connecting surface, and the second snap-fit ​​hole 2223 connects the second end face and the connecting surface. The first snap-fit ​​post of the second snap-fit ​​portion 2221 enters from the opening of the first snap-fit ​​hole on the first end face side and extends from the opening on the other side of the first snap-fit ​​hole. The first hook portion on the first snap-fit ​​post of the second snap-fit ​​portion 2221 extends out from the opening on the other side of the first snap-fit ​​hole and snaps into the edge of the opening to realize the snap-fit ​​between the second snap-fit ​​portion 2221 and the first snap-fit ​​hole. The second snap-fit ​​post 2224 of the third snap-fit ​​part 2222 enters from the opening of the second snap-fit ​​through hole 2223 on the second end face side and extends from the opening on the other side of the second snap-fit ​​through hole 2223. The second hook part 2225 on the second snap-fit ​​post 2224 of the third snap-fit ​​part 2222 extends out from the opening on the other side of the second snap-fit ​​through hole 2223 and snaps into the edge of the opening to realize the snap-fit ​​of the third snap-fit ​​part 2221 and the second snap-fit ​​through hole 2223.

[0087] The engagement of the snap-fit ​​hole, snap-fit ​​post, and hook-fitting part on the snap-fit ​​post enables the rapid connection of the first insulating strip, the second insulating strip, and the connecting part, thereby improving the assembly efficiency of the battery cell bracket.

[0088] According to some embodiments of this application, optionally, please continue to refer to Figure 11 and Figure 12 The free end of the snap-fit ​​pin has a notch to form a first sub-end 2226 and a second sub-end 2227 facing each other. The surfaces of the first sub-end 2226 and the second sub-end 2227, facing away from each other, respectively have a first sub-hooking portion 2228 and a second sub-hooking portion 2229 protruding from them. When the snap-fit ​​pin extends into the snap-fit ​​through hole, the first sub-hooking portion 2228 and the second sub-hooking portion 2229 are exposed and respectively hook onto the outer edge of the snap-fit ​​through hole. Here, the first sub-hooking portion 2228 and the second sub-hooking portion 2229 are a hooking structure; however, other structures may be used in specific implementations.

[0089] According to some embodiments of this application, optionally, please continue to refer to Figure 6The frame 221 is a heat-conducting component; and / or, the frame 221 is provided with a first flange and a second flange at both ends along the first direction, the first flange is provided with a first connecting structure, and the second flange is provided with a second connecting structure.

[0090] The frame 221 is a heat-conducting component, that is, the frame 221 is made of a material with heat-conducting properties; the frame 221 has a first flange and a second flange at both ends along the first direction, the first flange has a first connecting structure, and the second flange has a second connecting structure. Here, the battery cell bracket 22 can be fixed inside through the first connecting structure and the second connecting structure.

[0091] By using the frame as a heat conductor, the heat from the battery cell itself and the surrounding environment, which is fixed on the battery cell bracket, can be directed to the frame more and faster and then dissipated through the first channel on the frame; the first connecting structure of the first flange and the second connecting structure of the second flange can more easily fix the battery cell bracket to the battery module box.

[0092] According to some embodiments of this application, refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of a battery module provided in some embodiments of this application. Figure 5 The above is an exploded structural diagram of a battery module provided in some embodiments of this application. This application also provides a battery module 20, including: a battery cell 21 and a battery cell support 22 as described in any of the above embodiments, wherein the battery cell 21 is connected to the surface of the insulating member 222 of the battery cell support 22 that is away from the support body 221.

[0093] According to some embodiments of this application, this application also provides a battery 100, including: the battery module described in any of the above solutions.

[0094] According to some embodiments of this application, this application also provides an electrical device, including: a battery as described in any of the above embodiments.

[0095] According to some embodiments of this application, see Figures 4 to 12 This application provides a battery module 20, which includes a battery cell 21 and a battery cell support 22. The battery cell 21 is a cylindrical battery cell. The battery cell support 22 includes a frame 221, a connecting portion 2212, and an insulating member 222. The frame 221 has a first channel 2211 along a first direction. The connecting portion 2212 is formed integrally with the frame 221 around the first direction on the outer surface of the frame 221, and the connecting surface has a plurality of receiving recesses 2213 recessed around the first direction, the inner wall shape of the receiving recesses 2213 being adapted to the shape of a local surface of the battery cell 21.

[0096] The insulating component 222 includes a first insulating strip 222a and a second insulating strip 222b. The first insulating strip 222a is arranged in a circle around the outer surface of the connecting portion 2212, and the second insulating strip 222b is arranged in a circle around the outer surface of the connecting portion 2212. The second insulating strip 222b and the first insulating strip 222a are respectively located at both ends of the connecting portion 2212 on the side away from the frame 221 and along the first direction. The surfaces of the first insulating strip 222a and the second insulating strip 222b away from the connecting portion 2212 are adapted to a partial surface of the battery cell 21, and the first insulating strip 222a and the second insulating strip 222b are respectively snapped into the connecting portion 2212. Insulating adhesive is filled between the first insulating strip 222a and the second insulating strip 222b to fix and insulate the battery cell 21.

[0097] 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 cell support bracket, characterized in that, include: A frame, wherein at least one first channel is provided along a first direction; An insulating component is disposed on the outer surface of the frame, the insulating component covers part or all of the outer surface, and the surface of the insulating component facing away from the frame can fix the battery cell. The outer surface of the frame is provided with a connecting portion around the first direction. The surface of the connecting portion opposite to the frame is the connecting surface. The connecting surface is recessed with at least one receiving recess. The inner wall shape of the receiving recess is adapted to the shape of a local surface of the battery cell. The insulating member is provided on the surface of the connecting portion opposite to the frame. The accommodating recess is elongated along the first direction, and the accommodating recess is concave arc-shaped around the first direction. And / or, the connecting portion is provided with a plurality of the receiving recesses, and the plurality of receiving recesses are evenly distributed on the connecting surface of the connecting portion; The insulating component includes: a first insulating strip and a second insulating strip. The first insulating strip is arranged in a circle around the connecting surface of the connecting portion, and the second insulating strip is arranged in a circle around the connecting surface of the connecting portion. The second insulating strip and the first insulating strip are spaced apart from each other. The surface of the first insulating strip opposite to the connecting portion has a first fixing recess that matches the local surface shape of the battery cell. The surface of the second insulating strip opposite to the connecting portion has a second fixing recess that matches the local surface shape of the battery cell. Insulating adhesive is used to fill the space between the first insulating strip and the second insulating strip to fix the battery cell to the battery cell bracket.

2. The battery cell support according to claim 1, characterized in that, The connecting part is a heat-conducting component; and / or, the connecting part is integrally formed with the frame; and / or, a second channel extending along the first direction is provided between the connecting part and the frame.

3. The battery cell support according to claim 1, characterized in that, The connecting part is provided with a first snap-fit ​​part at each end along the first direction, the first insulating strip is provided with a second snap-fit ​​part, and the second insulating strip is provided with a third snap-fit ​​part. The second snap-fit ​​part and the third snap-fit ​​part are respectively snapped with the first snap-fit ​​parts at both ends of the connecting part.

4. The battery cell support according to claim 3, characterized in that, The first snap-fit ​​part is a snap-fit ​​through hole; the second snap-fit ​​part and the third snap-fit ​​part are both snap-fit ​​posts, and the free end of the snap-fit ​​post is provided with a hook part.

5. The battery cell support according to claim 1, characterized in that, The frame is a heat-conducting component; and / or, the frame is provided with a first flange and a second flange at both ends along the first direction, the first flange being provided with a first connecting structure and the second flange being provided with a second connecting structure.

6. A battery module, characterized in that, include: A battery cell and a battery cell support according to any one of claims 1-5, wherein the battery cell is connected to the surface of the battery cell support with an insulating member facing away from the support body.

7. A battery, characterized in that, include: The battery module as described in claim 6.

8. An electrical device, characterized in that, include: The battery according to claim 7.

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