Battery device and electric appliance

Abstract

The application discloses a battery device and an electric device. The battery device comprises a battery cell, a battery box, a protection piece, a buffer structure and a resistance structure. The battery cell is arranged in the battery box. The battery box has a heat exchange box wall. The heat exchange box wall has a flow channel area and a non-flow channel area. The heat exchange box wall is provided with a heat exchange flow channel in the flow channel area. The protection piece is arranged outside the battery box and located on the heat exchange box wall. The buffer structure is arranged between the protection piece and the heat exchange box wall and at least partially corresponds to the flow channel area. The resistance structure corresponds to the non-flow channel area and is configured to resist deformation of the protection piece under external force. The resistance of the resistance structure to deformation is greater than that of the buffer structure. The technical scheme can improve the protection effect of the heat exchange flow channel in the battery device.

Description

Technical Field

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

[0002] When battery devices in related technologies are subjected to external impacts, they are easily squeezed and damaged in the heat exchange channels. Summary of the Invention

[0003] The main objective of this application is to provide a battery device designed to improve the protection of heat exchange channels.

[0004] To achieve the above objectives, the battery device proposed in this application includes:

[0005] Battery cell;

[0006] The battery box contains individual battery cells. The battery box has a heat exchange box wall, which has a flow channel area and a non-flow channel area. The heat exchange box wall has heat exchange channels in the flow channel area.

[0007] The protective component is located outside the battery box and on the wall of the heat exchange box;

[0008] A buffer structure is provided between the protective component and the heat exchanger wall, and is at least partially provided corresponding to the flow channel area; and

[0009] The resistance structure is set in the non-flow channel area and is configured to resist the deformation of the protective component under external force. The deformation resistance of the resistance structure is greater than that of the buffer structure.

[0010] The battery device in this application has a buffer structure with a corresponding flow channel area between the protective component and the heat exchange box wall. When the protective component is deformed by external impact and squeezes the buffer structure, the deformation of the buffer structure can absorb the impact force, reduce the possibility of the impact force being transmitted to the heat exchange flow channel and causing pressure damage, and thus provide corresponding protection for the heat exchange flow channel.

[0011] Meanwhile, the battery device in this solution is further provided with a resistance structure corresponding to the non-flow channel area. Since the deformation resistance of this resistance structure is greater than that of the buffer structure, it can resist the deformation of the protective component under external force. At this time, the resistance structure plays a role in reinforcing the part of the protective component corresponding to the non-flow channel area, making it less prone to deformation. Therefore, when the protective component is subjected to external collision impact, the part of the protective component corresponding to the flow channel area can restrain and limit the flow channel area, thereby reducing the possibility of deformation of the flow channel area and thus providing corresponding protection for the heat exchange channel.

[0012] Therefore, the structural design of the battery device in this scheme, through the reinforcing effect of the protective plate on the corresponding non-flow channel area by the resistance structure, can be considered as constructing a primary protection for the heat exchange channel; while through the deformation absorption effect of the protective plate on the corresponding flow channel area by the buffer structure, it can be considered as constructing a secondary protection for the heat exchange channel. At this point, the synergistic effect of these primary and secondary protections helps to improve the protection effect on the heat exchange channel in the battery device.

[0013] In some embodiments, the resistance structure is disposed between the protective member and the heat exchanger wall.

[0014] Therefore, it is easier to resist the deformation of the protective component when it is subjected to external expansion impact force; at the same time, the gap space between the protective component and the heat exchange box wall can be used to improve the compactness of the structure.

[0015] In some embodiments, the resisting structure contacts the buffering structure and is configured to resist deformation of the buffering structure under external forces.

[0016] Therefore, the buffer structure can be prevented from undergoing excessive deformation, which could cause pressure loss to the heat exchange channel and further improve the protection of the heat exchange channel in the battery device.

[0017] In some embodiments, the resistance structure is connected to the buffer structure.

[0018] Therefore, the resisting structure and the buffering structure can form a connecting interface, so that the resisting structure can more effectively resist the deformation of the buffering structure.

[0019] In some embodiments, the resistance structure and the buffer structure are integrally formed.

[0020] Therefore, on the one hand, it can simplify subsequent assembly and improve the convenience of processing and manufacturing; on the other hand, it can also improve the connection strength between the resistance structure and the buffer structure, enhance the resistance of the resistance structure to the deformation of the buffer structure under external force, so as to better protect the heat exchange channel in the battery device.

[0021] In some embodiments, the protective member and the heat exchange box wall are stacked in a first direction, and at least a portion of the resistance structure and the buffer structure are arranged in a second direction, the second direction intersecting the first direction.

[0022] Therefore, the buffer structure does not occupy too much space for the resisting structure, which makes it easier to arrange a resisting structure of appropriate size and improve the resisting structure's resistance to deformation of the protective component under external force.

[0023] In some embodiments, in the region comprised of the flow channel region and the non-flow channel region, the resistance structure covers the region other than that corresponding to the buffer structure.

[0024] This not only increases the volume of the resisting structure but also facilitates the connection between the buffer structure and the resisting structure, thereby enhancing the resistance of the resisting structure to the deformation of the protective components and the buffer structure.

[0025] In some embodiments, the resistance structure contacts the protective member on one side in the first direction and the opposite side contacts the heat exchanger wall.

[0026] Therefore, by having the two sides of the resistance structure contact the protective component and the heat exchange box wall respectively in the first direction, the impact force on the protective component can be better transferred to the heat exchange box wall, reducing the possibility of deformation of the protective component, that is, enhancing the resistance of the resistance structure to the deformation of the protective component.

[0027] In some embodiments, the resistance structure is bonded to the heat exchanger wall.

[0028] This allows the components consisting of protective parts, buffer structures, and resistance structures to establish a connection with the heat exchanger wall in the middle area, thereby improving the overall structural strength of the component and reducing the possibility of deformation.

[0029] In some embodiments, the shape of the buffer structure is the same as the shape of the heat exchange channel on the projection plane perpendicular to the first direction.

[0030] This allows the buffer structure to adaptably protect the heat exchange channels at all locations, while providing sufficient resistance structures in other locations.

[0031] In some embodiments, on a projection plane perpendicular to the first direction, the projection of the flow channel region is located inside the projection of the buffer structure.

[0032] Therefore, the buffer structure can play a sufficient buffering role in the corresponding flow channel area, and the resistance structure can be arranged at intervals with the flow channel area to reduce the possibility of pressure loss to the flow channel area.

[0033] In some embodiments, the buffer structure is provided corresponding to the flow channel area and at least part of the non-flow channel area, and the protective component and the heat exchange box wall are stacked in the first direction.

[0034] The resistance structure is disposed on at least one side of the buffer structure disposed in the first direction of the corresponding non-flow channel area; or, at least a portion of the resistance structure is embedded in the buffer structure disposed in the corresponding non-flow channel area.

[0035] Therefore, placing the resisting structure on at least one side of the buffer structure in the first direction simplifies the shape of both the buffer and resisting structures, thus improving their manufacturing convenience. Simultaneously, it increases the contact area between the resisting and buffering structures, enhancing their connection strength and facilitating the resisting structure's stable resistance to deformation of the buffer structure. Embedding at least a portion of the resisting structure within the corresponding non-flow channel area of ​​the buffer structure also further improves the connection strength between the resisting and buffering structures.

[0036] In some embodiments, the heat exchanger wall includes:

[0037] The box wall body has a flow channel area and a non-flow channel area; and

[0038] The heat exchange tube is located between the main body of the tank wall and the protective component, and is situated in the flow channel area. The heat exchange tube contains a heat exchange flow channel.

[0039] At least part of the buffer structure is located between the heat exchange tube and the protective component, and the resistance structure is located between the tank wall body and the protective component, and is spaced apart from the heat exchange tube.

[0040] Therefore, individual battery cells will not cause pressure loss to the heat exchange tubes, which in turn helps to further improve the protection effect of the heat exchange channel.

[0041] In some embodiments, the material of the cushioning structure is expanded polypropylene, polyurethane microporous foam, or silicone foam.

[0042] And / or, the material of the resistance structure is glass fiber reinforced polypropylene, carbon fiber reinforced polypropylene, or glass fiber reinforced polyphenylene sulfide.

[0043] Therefore, this material selection for the buffer structure improves its cushioning performance while also providing insulation or flame retardancy. Conversely, this material selection for the resistance structure enhances its supporting strength.

[0044] This application also proposes an electrical device including the battery device in any of the above embodiments. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the structure of one embodiment of the vehicle of this application;

[0047] Figure 2 This is an exploded structural diagram of an embodiment of the battery device of this application;

[0048] Figure 3 for Figure 2 A schematic diagram of a partial exploded structure of the battery device;

[0049] Figure 4 This is a partial cross-sectional schematic diagram of an embodiment of the battery device of this application;

[0050] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0051] Figure 6 This is a partial exploded structural diagram of another embodiment of the battery device of this application;

[0052] Figure 7 for Figure 6 A partial cross-sectional schematic diagram of the battery device in the diagram;

[0053] Figure 8 for Figure 7 A magnified view of a section at point B in the middle.

[0054] Explanation of icon numbers:

[0055] 100. Battery assembly; 10. Battery cell; 20. Battery box; 21. Box body; 211. Heat exchange box wall; 2111. Box wall body; 2112. Flow channel area; 2113. Non-flow channel area; 2114. Heat exchange tube; 2115. Heat exchange flow channel; 23. Box cover; 30. Protective component; 40. Buffer structure; 50. Resistance structure; 60. Adhesive; 1000. Vehicle; 200. Controller; 300. Motor.

[0056] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0058] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0059] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0061] Battery devices, which are devices used to store electrical energy, are widely used not only in energy storage power systems such as hydropower, thermal power, wind power and solar power plants, but also in electric vehicles such as electric bicycles, electric motorcycles, electric cars, rail trains and other fields.

[0062] The battery device may include a battery case and individual battery cells housed within the battery case. The battery case encloses a space to house the individual battery cells, which are the smallest units comprising the battery. Each individual battery cell typically includes a battery casing and an electrode assembly housed within the casing. The electrode assembly is the component within the individual battery cell where the electrochemical reaction actually occurs. It may include a positive electrode, a negative electrode, and a separator between them, formed by winding or stacking the positive electrode, negative electrode, and separator. The individual battery cells may be secondary or primary batteries; they may also be lithium-sulfur, sodium-ion, or magnesium-ion batteries, but are not limited to these. Furthermore, the individual battery cells may be flat, cuboid, or other shapes. Additionally, the battery case may contain multiple individual battery cells, which may be connected in series, in parallel, or in a hybrid configuration including both series and parallel connections.

[0063] Furthermore, in related technologies, to achieve cooling and / or heating of the battery cells, heat exchange channels are typically provided on the walls of the battery pack, and protective components are further provided on the outer side of the pack walls to protect these heat exchange channels. However, when the battery device is used in electrical equipment such as vehicles, the protective components are easily deformed under external impact, causing extrusion damage to the heat exchange channels.

[0064] Therefore, based on the above considerations, in order to solve the technical problem that current battery devices are prone to damage to the heat exchange channels when the protective components are subjected to external impacts, this application proposes a novel battery device. This battery device innovatively incorporates a resistance structure at a location corresponding to the non-channel area to resist deformation of the protective components under external forces, reducing deformation and thus protecting the heat exchange channels. Simultaneously, a buffer structure is provided between the protective components and the heat exchange chamber wall at a location corresponding to the channel area. When the protective components deform and compress the buffer structure due to impact, the deformation of the buffer structure absorbs the impact force, further protecting the heat exchange channels.

[0065] Furthermore, it should be noted that the battery device proposed in this application can be applied to electrical devices to provide power to them. These electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, rail trains, ships, and spacecraft. Further, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., while spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0066] For ease of explanation, the following embodiments will use a vehicle as an example of the electrical equipment in one embodiment of this application.

[0067] Please refer to Figure 1 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 device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 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 device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0068] In some embodiments of this application, the battery device 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.

[0069] The structure of the battery device 100 proposed in this application will be explained below:

[0070] Please refer to the reference. Figures 2 to 5 In one embodiment of this application, the battery device 100 includes a battery cell 10, a battery box 20, a protective member 30, a buffer structure 40, and a resistance structure 50. The battery cell 10 is disposed inside the battery box 20, which has a heat exchange box wall 211. The heat exchange box wall 211 has a flow channel area 2112 and a non-flow channel area 2113. The heat exchange box wall 211 has a heat exchange flow channel 2115 in the flow channel area 2112. The protective member 30 is disposed outside the battery box 20 and located on the heat exchange box wall 211. The buffer structure 40 is disposed between the protective member 30 and the heat exchange box wall 211 and is at least partially disposed corresponding to the flow channel area 2112. The resistance structure 50 is disposed corresponding to the non-flow channel area 2113 and is configured to resist the deformation of the protective member 30 under external force. The deformation resistance of the resistance structure 50 is greater than that of the buffer structure 40.

[0071] The battery cell 10 can be used to store electrical energy. The battery cell 10 can be a rechargeable battery, meaning it can be recharged after discharge to reactivate the active materials and continue to be used. Further, the battery cell 10 can be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. Additionally, the battery cell 10 can be flat, cuboid, or other shapes; this application does not limit the shape of the battery cell 10. Furthermore, it should be noted that the battery device 100 may include only one battery cell 10. Of course, the battery device 100 may also include at least two battery cells 10. In this case, the at least two battery cells 10 can be connected in series or in parallel. Of course, when the battery device 100 includes a larger number of battery cells 10, the multiple battery cells 10 can be mixed-connected, meaning that multiple battery cells 10 can be connected in both series and parallel.

[0072] The battery box 20 provides space for housing the individual battery cells 10, thus isolating and protecting them. The battery box 20 can be rectangular, cubic, cylindrical, or other shapes; this application does not limit the shape of the battery box 20. Furthermore, one wall of the battery box 20 can be formed as a heat exchange box wall 211. This heat exchange box wall 211 can have heat exchange channels 2115 within a flow channel area 2112. Water or oil, or other heat exchange media, can be channeled through the inlet and outlet of the heat exchange channels 2115 to achieve heat exchange with the individual battery cells 10 located within the battery box 20, thereby cooling or heating the individual battery cells 10. The heat exchange channels 2115 can be linear, zigzag, or a reciprocating S-shape; this application does not limit the shape of the heat exchange channels 2115. Furthermore, the heat exchange box wall 211 may only include the flow channel area 2112 and the non-flow channel area 2113, or it may include other areas in addition to these. That is, the flow channel area 2112 and the non-flow channel area 2113 constitute part or all of the area of ​​the heat exchange box wall 211. In addition, when the battery device 100 is in normal installation and use, with the ground as a reference, the bottom wall of the battery box 20 may be formed as the heat exchange box wall 211. At this time, the heat exchange box wall 211 not only plays a role in heat exchange for the battery cells 10 inside the battery box 20, but also plays a supporting role. Of course, this application is not limited to this. In some embodiments, the side wall or the top wall of the box may also be formed as the heat exchange box wall 211, as long as the heat exchange box wall 211 can play a role in heat exchange for the battery cells 10 inside the battery box 20. Alternatively, the heat exchange box wall 211 may include a box wall body 2111 and a heat exchange pipe 2114 located outside the box wall body 2111, as described below, with a heat exchange flow channel 2115 disposed within the heat exchange pipe 2114. Of course, in some embodiments, the heat exchange box wall 211 may only include the box wall body 2111, with the heat exchange flow channel 2115 directly disposed within the box wall body 2111. Furthermore, to improve the installation of the battery cell 10 within the battery box 20, the battery box 20 may include a box body 21 and a box cover 23, with the box cover 23 covering the box body 21 to enclose and form a space for accommodating the battery cell 10. In this case, the heat exchange box wall 211 may be located within the box body 21, or it may be located within the box cover 23.

[0073] The protective component 30 can be installed on the outside of the heat exchanger wall 211 and cover the flow channel area 2112 and the non-flow channel area 2113 to protect the heat exchanger wall 211 with heat exchange flow channels 2115. The protective component 30 can be a cover structure with one open end, or it can be a plate structure. This application does not limit the structural type and shape of the protective component 30.

[0074] The buffer structure 40 can deform accordingly when the protective component 30 is deformed and compressed by external impact, in order to absorb the impact. The buffer structure 40 is at least partially configured to correspond to the flow channel region 2112, meaning that the buffer structure 40 can be configured to correspond to the flow channel region 2112, or it can be configured to further correspond to part or all of the non-flow channel region 2113. Furthermore, the shape of the buffer structure 40 can follow the shape of the heat exchange flow channel 2115, for example, it can be configured as a linear shape or a reciprocating S-shape. Alternatively, the shape of the buffer structure 40 can be different from the shape of the heat exchange flow channel 2115, as long as it covers the flow channel region 2112. In addition, the buffer structure 40 can be connected to the protective component 30, or it can be connected to the heat exchange box wall 211, or it can be connected to both the protective component 30 and the heat exchange box wall 211. This application does not limit the installation method of the buffer structure 40. Furthermore, the buffer structure 40 absorbs the impact through elastic deformation, allowing for reuse. At this point, the material of the buffer structure 40 can be foamed polypropylene, polyurethane microporous foam, silicone foam, or silicone, etc., ensuring that it has elasticity so as to absorb the impact through elastic deformation. Of course, this application is not limited to this; the buffer structure 40 can also absorb the impact through inelastic deformation. In this case, the material of the buffer structure 40 can be a material that is easily deformable, such as foamed metal.

[0075] The resistance structure 50 has a greater resistance to deformation than the buffer structure 40, giving it relatively high strength and making it less prone to deformation. This provides localized reinforcement to the protective component 30. The resistance structure 50 can be positioned between the protective component 30 and the heat exchanger wall 211, or it can be positioned on the side of the protective component 30 facing away from the heat exchanger wall 211. This application does not limit the placement of the resistance structure 50, as long as it corresponds to the non-flow channel area 2113. Furthermore, the resistance structure 50 can partially or completely cover the non-flow channel area 2113. The resistance structure 50 can be plate-shaped, column-shaped, or block-shaped; this application does not limit its structural type or shape. Moreover, the resistance structure 50 can be connected to the protective component 30, the heat exchanger wall 211, or both; this application does not limit the installation method of the resistance structure 50. Furthermore, the material of the resistive structure 50 can be a high-strength material such as glass fiber reinforced polypropylene, carbon fiber reinforced polypropylene, glass fiber reinforced polyphenylene sulfide, or steel. Of course, in some embodiments, when the resistive structure 50 is disposed on the protective member 30, the material of the resistive structure 50 can also be the same as the material of the protective member 30, so that the resistive structure 50 and the protective member 30 are integrated into one piece. For example, a buffer structure 40 can be formed by a protruding plate, protrusion, or protrusion on the protective member 30. In addition, the resistive structure 50 and the buffer structure 40 can be connected, or they can simply abut against each other, or they can be spaced apart.

[0076] The battery device 100 in this application incorporates a buffer structure 40 corresponding to the flow channel region 2112 between the protective member 30 and the heat exchange box wall 211. This buffer structure 40 absorbs the impact force when the protective member 30 deforms due to external impact and compresses the buffer structure 40, reducing the likelihood of the impact force being transmitted to the heat exchange flow channel 2115 and causing pressure damage. This provides protection for the heat exchange flow channel 2115. Furthermore, the battery device 100 in this application also includes a resistance structure 50 corresponding to the non-flow channel region 2113. Since the resistance structure 50 has a greater resistance to deformation than the buffer structure 40, it can resist the deformation of the protective member 30 under external force. At this time, the resistance structure 50 strengthens the portion of the protective component 30 corresponding to the non-flow channel region 2113, making it less prone to deformation. Therefore, when the protective component 30 is subjected to external impact, the portion of the protective component 30 corresponding to the non-flow channel region 2113 can restrain and limit the portion of the protective component 30 corresponding to the flow channel region 2112, reducing the possibility of deformation of the portion of the protective component 30 corresponding to the flow channel region 2112, thus providing corresponding protection for the heat exchange flow channel 2115. Therefore, the structural arrangement of the battery device 100 in this solution, through the resistance strengthening effect of the protective plate corresponding to the non-flow channel region 2113 by the resistance structure 50, can be considered as constructing a first-level protection for the heat exchange flow channel 2115; while the deformation absorption effect of the protective plate corresponding to the flow channel region 2112 by the buffer structure 40 can be considered as constructing a second-level protection for the heat exchange flow channel 2115. At this time, the combined effect of the primary and secondary protections helps to improve the protection of the heat exchange channel 2115 in the battery device 100.

[0077] Please refer to the reference. Figure 4 and Figure 5 In one embodiment of this application, the resistance structure 50 is disposed between the protective member 30 and the heat exchange box wall 211.

[0078] In this embodiment, the resisting structure 50 is disposed between the protective member 30 and the heat exchange box wall 211. This allows the protective member 30 to more easily resist deformation when subjected to external expansion impact forces. Simultaneously, the gap between the protective member 30 and the heat exchange box wall 211 improves the compactness of the structure. Of course, when the resisting structure 50 is disposed on the side opposite to the protective member 30 as described above, to further improve the compactness of the structure, the protective member 30 can be recessed towards the side facing the heat exchange box wall 211 to form a space to accommodate the resisting structure 50.

[0079] Please refer to Figure 5In one embodiment of this application, the resistance structure 50 is in contact with the buffer structure 40 and is configured to resist the deformation of the buffer structure 40 under external force.

[0080] The resisting structure 50 contacts the buffer structure 40, either by connecting the resisting structure 50 to the buffer structure 40 or by abutting against the buffer structure 40. Thus, when the protective component 30 is deformed and compressed by an external collision impact, the resisting structure 50 can restrain and limit the buffer structure 40, for example, by pulling or pressing it to reduce the deformation of the buffer structure 40.

[0081] In this embodiment, the resistance structure 50 is further established to resist the deformation of the buffer structure 40 under external force, so that the buffer structure 40 does not undergo excessive deformation and cause pressure loss to the heat exchange channel 2115, which is beneficial to further improve the protection of the heat exchange channel 2115 in the battery device 100.

[0082] Please refer to Figure 5 In one embodiment of this application, the resistance structure 50 is connected to the buffer structure 40.

[0083] The connection between the resistance structure 50 and the buffer structure 40 can be an integrally molded structure as described below, or it can be a bonded connection. This application does not limit the connection method between the resistance structure 50 and the buffer structure 40.

[0084] In this embodiment, the resistance structure 50 and the buffer structure 40 are connected to form a connection interface, so that the resistance structure 50 can more effectively resist the deformation of the buffer structure 40.

[0085] In one embodiment of this application, the resistance structure 50 and the buffer structure 40 are integrally formed.

[0086] A one-piece molded structure refers to a structure manufactured using a one-piece molding process, where the two components are directly connected after manufacturing to form a single unit. For example, one of the resistance structure 50 and the buffer structure 40 can be molded using one set of molds, and then the other can be molded using another set of molds. In this case, the resistance structure 50 and the buffer structure 40 can be directly molded onto the protective component 30, thus forming a one-piece molded structure. Alternatively, the resistance structure 50 and the buffer structure 40 can be molded separately from the protective component 30, and then installed onto the protective component 30 using bonding or other connection methods. Alternatively, the resistance structure 50 can be placed as an insert in the mold used to mold the protective component 30. Therefore, this application does not limit the molding method of the resistance structure 50 and the buffer structure 40.

[0087] In this embodiment, the resistance structure 50 and the buffer structure 40 are made into an integral structure. On the one hand, this simplifies the subsequent assembly and improves the convenience of processing and manufacturing. On the other hand, it can also improve the connection strength between the resistance structure 50 and the buffer structure 40, and enhance the resistance of the resistance structure 50 to the deformation of the buffer structure 40 under external force, so as to better protect the heat exchange channel 2115 in the battery device 100.

[0088] In one embodiment of this application, in order to further improve the convenience of processing and manufacturing and the connection strength, the resistance structure 50, the buffer structure 40 and the protective component 30 can be configured as an integrally formed structure.

[0089] Please refer to Figure 5 In one embodiment of this application, the protective member 30 and the heat exchange box wall 211 are stacked in the first direction, and at least a portion of the resistance structure 50 and the buffer structure 40 are arranged in the second direction, which intersects with the first direction.

[0090] When the battery device 100 is in normal installation and use, with the ground as a reference, the first direction can be vertical and the second direction can be horizontal. The arrangement of at least a portion of the resisting structure 50 and the buffer structure 40 in the second direction means that the buffer structure 40 can only cover the corresponding flow channel area 2112, while the resisting structure 50 can be entirely located on the side of the buffer structure 40 in the second direction. Alternatively, the buffer structure 40 can cover not only the corresponding flow channel area 2112 but also a portion of the corresponding non-flow channel area 2113. In this case, the resisting structure 50 can be entirely located on the side of the buffer structure 40 in the second direction; or it can be partially located on the side of the buffer structure 40 in the second direction and partially located on one side of the buffer structure 40 in the first direction.

[0091] In this embodiment, arranging at least a portion of the resisting structure 50 and the buffer structure 40 in the second direction ensures that the buffer structure 40 does not excessively occupy the space occupied by the resisting structure 50. This facilitates the placement of a suitably sized resisting structure 50, enhancing its resistance to deformation of the protective member 30 under external forces. Furthermore, while the resisting structure 50 also resists deformation of the buffer structure 40 under external forces as described above, it also allows for convenient connection between the side of the resisting structure 50 and the side of the buffer structure 40 in the second direction. This connection provides better restraint and limiting of the buffer structure 40, reducing its deformation.

[0092] Please refer to Figure 5In one embodiment of this application, in the region formed by the flow channel region 2112 and the non-flow channel region 2113, the resistance structure 50 covers the region other than that corresponding to the buffer structure 40.

[0093] The resistance structure 50 covers the area excluding the area corresponding to the buffer structure 40. In other words, in the entire area formed by the flow channel area 2112 and the non-flow channel area 2113, the area where the buffer structure 40 is arranged is the area where the resistance structure 50 is arranged.

[0094] In this embodiment, the resisting structure 50 covers the area other than that corresponding to the buffer structure 40. This can increase the volume of the resisting structure 50 and facilitate the connection between the buffer structure 40 and the resisting structure 50, thereby enhancing the resistance of the resisting structure 50 to the deformation of the protective member 30 and the buffer structure 40.

[0095] Please refer to Figure 5 In one embodiment of this application, the resistance structure 50 contacts the protective member 30 on one side in the first direction, and the opposite side contacts the heat exchange box wall 211.

[0096] In this embodiment, the resisting structure 50 is positioned so that its two sides in the first direction contact the protective member 30 and the heat exchanger wall 211, respectively. This allows for better transfer of the impact force received by the protective member 30 to the heat exchanger wall 211, reducing the possibility of deformation of the protective member 30 and enhancing the resistance of the resisting structure 50 to deformation of the protective member 30. Of course, in some embodiments, when the resisting structure 50 is disposed on the heat exchanger wall 211, it may be spaced apart from the protective member 30. Alternatively, in some embodiments, when the resisting structure 50 is disposed on the protective member 30, it may be spaced apart from the heat exchanger wall 211.

[0097] Please refer to Figure 5 In one embodiment of this application, the resistance structure 50 is bonded to the heat exchange box wall 211.

[0098] In this embodiment, the resisting structure 50 is bonded to the heat exchange box wall 211 with adhesive 60, so that the component consisting of the protective component 30, the buffer structure 40 and the resisting structure 50 can also establish a connection with the heat exchange box wall 211 in the middle area, which helps to improve the overall structural strength of the component and reduce the possibility of deformation.

[0099] Please refer to Figure 5 In one embodiment of this application, in order to improve the buffering effect of the buffer structure 40, one side of the buffer structure 40 in the first direction can be in contact with the protective member 30, and the other side can be in contact with the heat exchange box wall 211.

[0100] Please refer to Figure 5 In one embodiment of this application, on the projection plane perpendicular to the first direction, the shape of the buffer structure 40 is the same as the shape of the heat exchange channel 2115.

[0101] In this embodiment, the shape of the buffer structure 40 is set to follow the shape of the heat exchange channel 2115, so that the buffer structure 40 can adaptably protect the heat exchange channel 2115 at all locations, while the resistance structure 50 is fully arranged in other locations.

[0102] Please refer to Figure 5 In one embodiment of this application, on a projection plane perpendicular to the first direction, the projection of the flow channel region 2112 is located inside the projection of the buffer structure 40.

[0103] In this embodiment, the projection of the flow channel region 2112 is located inside the projection of the buffer structure 40. That is, the buffer structure 40, in addition to correspondingly covering the flow channel region 2112, further covers the portion of the non-flow channel region 2113. This facilitates the buffer structure 40 to provide sufficient buffering at the position corresponding to the flow channel region 2112, and also allows for the convenient spacing of the resistance structure 50 from the flow channel region 2112, thereby reducing the possibility of pressure damage to the flow channel region 2112.

[0104] Please refer to the reference. Figures 6 to 8 In one embodiment of this application, the buffer structure 40 is disposed corresponding to the flow channel area 2112 and at least part of the non-flow channel area 2113, and the protective member 30 is stacked with the heat exchange box wall 211 in the first direction; the resistance structure 50 is disposed on at least one side of the buffer structure 40 disposed corresponding to the non-flow channel area 2113 in the first direction.

[0105] The resistance structure 50 is provided on at least one side of the buffer structure 40 in the first direction corresponding to the non-flow channel area 2113. The resistance structure 50 can be provided on the side of the buffer structure 40 facing the heat exchange box wall 211, or on the side of the buffer structure 40 away from the heat exchange box wall 211, or the resistance structure 50 can be provided on both the side of the buffer structure 40 facing the heat exchange box wall 211 and the side of the buffer structure 40 away from the heat exchange box wall 211.

[0106] In this embodiment, the resisting structure 50 is disposed on at least one side of the buffer structure 40 in the first direction, which simplifies the shape and structure of both the buffer structure 40 and the resisting structure 50, thereby improving their ease of manufacture. Simultaneously, it increases the contact area between the resisting structure 50 and the buffer structure 40, thereby enhancing their connection strength and facilitating the stable deformation-resisting effect of the resisting structure 50 on the buffer structure 40.

[0107] Of course, this application is not limited to this. In one embodiment of this application, the buffer structure 40 is provided corresponding to the flow channel area 2112 and at least part of the non-flow channel area 2113, and the protective member 30 and the heat exchange box wall 211 are stacked in the first direction; or at least part of the resistance structure 50 can be embedded in the buffer structure 40 provided corresponding to the non-flow channel area 2113 in order to improve the connection strength between the resistance structure 50 and the buffer structure 40.

[0108] Please refer to the reference. Figure 2 , Figure 4 as well as Figure 5 In one embodiment of this application, the heat exchange box wall 211 includes a box wall body 2111 and a heat exchange tube 2114. The box wall body 2111 has a flow channel area 2112 and a non-flow channel area 2113. The heat exchange tube 2114 is disposed between the box wall body 2111 and the protective member 30 and is located in the flow channel area 2112. A heat exchange flow channel 2115 is provided in the heat exchange tube 2114. At least a portion of the buffer structure 40 is disposed between the heat exchange tube 2114 and the protective member 30. The resistance structure 50 is disposed between the box wall body 2111 and the protective member 30 and is spaced apart from the heat exchange tube 2114.

[0109] The area corresponding to the heat exchange tube 2114 is the flow channel region 2112. The heat exchange tube 2114 and the box wall body 2111 can be bonded together with adhesive 60 or welded together. This application does not limit the connection method between the two.

[0110] In this embodiment, the heat exchange tube 2114 is disposed on the outer side of the casing wall 2111, allowing the battery cells 10 inside the battery box 20 to be installed on the inner side of the casing wall 2111, where the casing wall 2111 provides support. In this case, the battery cells 10 will not cause pressure damage to the heat exchange tube 2114, thus further enhancing the protection of the heat exchange channel 2115. The opposite sides of the buffer structure 40 can contact the heat exchange tube 2114 and the protective member 30 respectively, allowing for more thorough filling and improved buffering effect. The opposite sides of the resistance structure 50 can contact the casing wall 2111 and the protective member 30 respectively, transmitting the impact to the casing wall 2111 and reducing the possibility of deformation of the protective member 30. Furthermore, the resistance structure 50 is spaced apart from the heat exchange tube 2114, reducing the possibility of transmitting impact to the heat exchange tube 2114 and causing pressure damage.

[0111] Please refer to Figure 5 In one embodiment of this application, in order to improve the compactness of the distribution between structures, a groove can be formed in the box wall body 2111 at the position corresponding to the flow channel area 2112 on the side opposite to the protective member 30, so as to accommodate the heat dissipation pipe 2114 through the groove.

[0112] In one embodiment of this application, in order to improve the buffering performance of the buffer structure 40 while also taking into account insulation or flame retardant effects, the material of the buffer structure 40 can be foamed polypropylene, polyurethane microporous foam or silicone foam.

[0113] In one embodiment of this application, in order to improve the support strength of the resisting structure 50, the material of the resisting structure 50 may be glass fiber reinforced polypropylene, carbon fiber reinforced polypropylene, or glass fiber reinforced polyphenylene sulfide.

[0114] Please refer to the reference. Figures 2 to 5In one embodiment of this application, the battery device 100 includes a battery cell 10, a battery case 20, a protective member 30, a buffer structure 40, and a resistance structure 50. The battery cell 10 is disposed inside the battery case 20, which has a heat exchange box wall 211. The heat exchange box wall 211 has a flow channel region 2112 and a non-flow channel region 2113. The heat exchange box wall 211 has a heat exchange flow channel 2115 in the flow channel region 2112. The protective member 30 is disposed outside the battery case 20 and located on the heat exchange box wall 211. The buffer structure 40 is disposed between the protective member 30 and the heat exchange box wall 211, and is at least partially disposed corresponding to the flow channel region 2112. The resistance structure 50 is disposed corresponding to the non-flow channel region 2113 and is configured to resist the deformation of the protective member 30 under external force. The deformation resistance of the resistance structure 50 is greater than that of the buffer structure 40. The resistance structure 50 is disposed between the protective member 30 and the heat exchange box wall 211. The resisting structure 50 contacts the buffer structure 40 and is configured to resist the deformation of the buffer structure 40 under external force. The resisting structure 50 is connected to the buffer structure 40. The resisting structure 50 and the buffer structure 40 are integrally formed. The protective member 30 is stacked with the heat exchange box wall 211 in the first direction, and at least a portion of the resisting structure 50 is arranged with the buffer structure 40 in the second direction, which intersects with the first direction. In the area formed by the flow channel area 2112 and the non-flow channel area 2113, the resisting structure 50 covers the area except for the area corresponding to the buffer structure 40. One side of the resisting structure 50 contacts the protective member 30 in the first direction, and the opposite side contacts the heat exchange box wall 211. The resisting structure 50 is bonded to the heat exchange box wall 211. On the projection plane perpendicular to the first direction, the shape of the buffer structure 40 is the same as the shape of the heat exchange flow channel 2115. On the projection plane perpendicular to the first direction, the projection of the flow channel area 2112 is located inside the projection of the buffer structure 40. The heat exchanger wall 211 includes a wall body 2111 and heat exchange tubes 2114. The wall body 2111 has a flow channel area 2112 and a non-flow channel area 2113. The heat exchange tubes 2114 are located between the wall body 2111 and the protective member 30, and are situated in the flow channel area 2112. Heat exchange channels 2115 are provided within the heat exchange tubes 2114. At least a portion of the buffer structure 40 is located between the heat exchange tubes 2114 and the protective member 30. The resistance structure 50 is located between the wall body 2111 and the protective member 30, and is spaced apart from the heat exchange tubes 2114. The buffer structure 40 is made of foamed polypropylene, polyurethane microporous foam, or silicone foam. The resistance structure 50 is made of glass fiber reinforced polypropylene, carbon fiber reinforced polypropylene, or glass fiber reinforced polyphenylene sulfide.

[0115] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery device, characterized in that, include: Battery cell; A battery box, wherein the battery cells are disposed inside the battery box, the battery box has a heat exchange box wall, the heat exchange box wall has a flow channel area and a non-flow channel area, and the heat exchange box wall has a heat exchange flow channel in the flow channel area; A protective component is provided outside the battery box and located on the wall of the heat exchange box; A buffer structure is provided between the protective component and the heat exchange box wall, and is at least partially provided corresponding to the flow channel area; as well as A resistance structure is provided corresponding to the non-flow channel area and configured to resist the deformation of the protective component under external force. The material of the resistance structure is different from that of the buffer structure, so that the deformation resistance of the resistance structure is greater than that of the buffer structure. One side of the buffer structure contacts the protective component, and the other side contacts the heat exchange box wall. The resistance structure is located between the protective component and the heat exchange box wall.

2. The battery device as claimed in claim 1, characterized in that, The resisting structure is in contact with the buffer structure and is configured to resist the deformation of the buffer structure under external force.

3. The battery device as claimed in claim 2, characterized in that, The resistance structure is connected to the buffer structure.

4. The battery device as claimed in claim 3, characterized in that, The resistance structure and the buffer structure are integrally formed.

5. The battery device as claimed in claim 1, characterized in that, The protective component is stacked on top of the heat exchanger wall in a first direction, and at least a portion of the resistance structure is arranged with the buffer structure in a second direction, the second direction intersecting the first direction.

6. The battery device as claimed in claim 5, characterized in that, In the region formed by the flow channel region and the non-flow channel region, the resistance structure covers the region other than that corresponding to the buffer structure.

7. The battery device as claimed in claim 5, characterized in that, The resistance structure contacts the protective member on one side in the first direction and contacts the heat exchange box wall on the opposite side.

8. The battery device as claimed in claim 7, characterized in that, The resistance structure is bonded to the heat exchanger box wall.

9. The battery device as claimed in claim 5, characterized in that, On the projection plane perpendicular to the first direction, the shape of the buffer structure is the same as the shape of the heat exchange channel.

10. The battery device as claimed in claim 5, characterized in that, On a projection plane perpendicular to the first direction, the projection of the flow channel region is located inside the projection of the buffer structure.

11. The battery device as claimed in claim 1, characterized in that, The buffer structure is provided corresponding to the flow channel area and at least part of the non-flow channel area, and the protective component is stacked with the heat exchange box wall in the first direction; The resistance structure is disposed on at least one side of the buffer structure in a first direction corresponding to the non-flow channel area; or, at least a portion of the resistance structure is embedded in the buffer structure corresponding to the non-flow channel area.

12. The battery device as claimed in claim 1, characterized in that, The heat exchanger wall includes: The box wall body has the flow channel area and the non-flow channel area; and A heat exchange tube is disposed between the tank wall body and the protective component, and is located in the flow channel area. The heat exchange tube is provided with the heat exchange flow channel. At least a portion of the buffer structure is disposed between the heat exchange tube and the protective component, and the resistance structure is disposed between the tank wall body and the protective component, and is spaced apart from the heat exchange tube.

13. The battery device according to any one of claims 1 to 12, characterized in that, The buffer structure is made of foamed polypropylene, polyurethane microporous foam, or silicone foam. And / or, the material of the resistance structure is glass fiber reinforced polypropylene, carbon fiber reinforced polypropylene, or glass fiber reinforced polyphenylene sulfide.

14. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 13.

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