Battery device and electric device

Abstract

The embodiment of the utility model provides a battery device and a power utilization device. The battery device comprises a battery monomer group and a box body, wherein the battery monomer group comprises a plurality of battery monomers which are stacked along a first direction; the box body comprises a bottom wall and two first side walls which are oppositely arranged along a first direction, and the battery monomer group is arranged between the two first side walls; wherein a first guide insulating part is arranged between each first side wall and the battery monomer group, the first guide insulating part is configured to be compressed and deformed along a first direction after being subjected to extrusion force of the battery monomer group and the first side wall, and the first guide insulating part is provided with a guide inclined surface; and the guide inclined surface is used for guiding the battery monomer group to enter between the two first side walls. According to the technical scheme provided by the invention, the boxing difficulty of the battery monomer group can be reduced.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are the keys to the sustainable development of the automotive industry. Electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] In battery technology, when the battery module is put into the box, it usually relies on the thickness adjustment of the end plate structure, but the end plate structure will increase the structural complexity of the battery module. After canceling the end plate structure of the battery module, the reliability and stability of the battery cell group entering the box are affected. Summary of the Utility Model

[0004] The present application provides a battery device and an electrical device, which can reduce the difficulty of the battery cell group entering the box.

[0005] The present application is implemented by the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a battery device. The battery device includes a battery cell group and a box body. The battery cell group includes a plurality of battery cells stacked along a first direction. The box body includes a bottom wall and two first side walls oppositely arranged along the first direction. The battery cell group is arranged between the two first side walls. Wherein, a first guiding insulating member is arranged between each first side wall and the battery cell group. The first guiding insulating member is configured to be compressed and deformed along the first direction after being subjected to the extrusion force between the battery cell group and the first side wall. The first guiding insulating member has a guiding inclined surface, and the guiding inclined surface is used to guide the battery cell group into the space between the two first side walls.

[0007] In the technical solution of the embodiment of the present application, a first guiding insulating member is provided between the battery cell and the first side wall of the box body. The first guiding insulating member can insulate between the battery cell group and the first side wall of the box body, and can effectively reduce the risk of electrical short circuit between the battery cell group and the box body. And the setting of the first guiding insulating member, during the process of the battery cell group entering the box, the guiding inclined surface on the first guiding insulating member can guide the battery cell group into the area between the two first side walls. And during the process of the battery cell group entering the box following the guiding inclined surface, a certain pressure is formed between the battery cell group and the first side wall of the box body. After the first guiding insulating member is subjected to the extrusion force of the battery cell group and the first side wall, it is compressed and deformed along the first direction. The first guiding insulating member can be gradually compressed during the process of the battery cell group entering the box, reducing the impact and vibration of the battery cell group during the process of entering the box, and reducing the gap between the battery cell group and the first side wall, ensuring the safety and stability of the battery cell group after entering the box, providing a reserved space for the expansion of the battery cell group, improving the installation efficiency and reliability of the entire battery cell group, reducing the difficulty of the battery cell group entering the box, and facilitating the smooth entry of the battery cell group into the box.

[0008] According to some embodiments of the present application, the first guiding insulating member includes a first connecting section and a second connecting section connected to each other. The first connecting section and the second connecting section are arranged at an angle. The first connecting section is used to connect with the first side wall or the battery cell group, and the guiding inclined surface is located on the second connecting section; the first connecting section and the second connecting section are connected by a crease, and the crease is used to allow the second connecting section to move closer to the first connecting section along the first direction.

[0009] In the above solution, the first guiding insulating member includes a first connecting section and a second connecting section connected to each other, and the first connecting section and the second connecting section are connected by a crease, and the first connecting section and the second connecting section are arranged at an angle. The crease can cause the second connecting section to be extruded and deformed in the direction of the first connecting section. When the first connecting section is connected to the first side wall, the guiding inclined surface on the second connecting section can contact the side surface of the battery cell at one end of the first direction in the battery cell group, guide the battery cell group into the box and extrude the second connecting section, so that the second connecting section moves closer to the first connecting section along the first direction under the guiding action of the crease, realizing the smooth entry of the battery cell group into the box. Similarly, when the first connecting section is connected to the battery cell group, the guiding inclined surface on the second connecting section can contact the first side wall, guide the battery cell group into the box and extrude the second connecting section, so that the second connecting section moves closer to the first connecting section along the first direction, realizing the smooth entry of the battery cell group into the box.

[0010] According to some embodiments of the present application, the first guiding insulating member further includes a buffer portion, and the buffer portion is arranged between the first connecting section and the second connecting section, and the buffer portion is connected to the first connecting section.

[0011] In the above scheme, by providing a buffer portion between the first connecting section and the second connecting section, the buffer portion can further buffer the compression deformation of the first guide insulating member, so that the first guide insulating member has better compression and resilience performance, and the first guide insulating member is not easy to deform and fail under long-term compression. In the process of putting the battery cell group into the box, the second connecting section moves closer to the first connecting section along the fold, and the buffer portion is compressed and deformed at the same time, providing the required installation space for the battery cell group, so that the battery cell group can smoothly enter the box body, and providing a certain extrusion prestress to the battery cell group to ensure the structural stability of the battery cell group in the box body. In the process of loading and using the battery device, the buffer portion can absorb the collision force from different directions, reduce the mutual influence between adjacent battery cells in the battery cell group, and thus improve the service life and reliability of the entire battery device.

[0012] According to some embodiments of the present application, the first connecting segment has a first end away from the fold, the second connecting segment has a second end away from the fold, and there is a gap between the first end and the second end to form an opening arranged opposite to the fold.

[0013] In the above scheme, there is a gap between the first end and the second end, and an opening arranged opposite to the fold is formed between the first end and the second end of the first guide insulating member, that is, the shape of the first connecting section and the second connecting section in the first guide insulating member is a V-shaped structure. After the guiding inclined surface on the second connecting section contacts and is compressed with the first side wall or the battery cell group, the battery cell group is guided into the box body. In the process of the battery cell group being put into the box, the opening on the first guide insulating member allows the second connecting section to move toward the first connecting section, so that the battery cell group can be smoothly put into the box.

[0014] According to some embodiments of the present application, the second connecting segment includes a first sub-connecting segment and a second sub-connecting segment, the first sub-connecting segment and the second sub-connecting segment are arranged at an angle, one end of the first sub-connecting segment is connected to the fold, the other end of the first sub-connecting segment is connected to one end of the second sub-connecting segment, and the other end of the second sub-connecting segment is arranged close to the first connecting segment.

[0015] In the above scheme, the second connecting section includes a first sub-connecting section and a second sub-connecting section, the first sub-connecting section and the second sub-connecting section are set at an angle, and the other end of the second sub-connecting section is set against the first connecting section. During the extrusion deformation process of the first guide insulating member, the first sub-connecting section and the second sub-connecting section can both move toward the first connecting section, and the end of the second sub-connecting section away from the first sub-connecting section is against the first connecting section. The free end of the second sub-connecting section can slide along the length direction of the first connecting section in the direction away from the crease, thereby realizing the compression deformation of the first guide insulating member.

[0016] According to some embodiments of the present application, the first connecting section is connected to the first side wall, the guiding inclined surface is located on one side of the second connecting section facing the battery cell group, and the opening is arranged facing the bottom wall.

[0017] In the above solution, the first connecting section is connected to the first side wall. Before the battery cell group is put into the box, the first guiding insulating member can be installed on the first side wall in advance. The guiding inclined surface of the second connecting section faces the battery cell group. When the battery cell group is put into the box, the guiding inclined surface contacts the side surface of the battery cell at one end in the first direction in the battery cell group, and the opening faces the bottom wall direction, guiding the battery cell group into the box and squeezing the second connecting section, so that under the guiding action of the crease, the second connecting section moves closer to the first connecting section along the first direction, and the opening becomes smaller, realizing the smooth entry of the battery cell group into the box.

[0018] According to some embodiments of the present application, a first adhesive layer is provided on one side of the first connecting section facing the first side wall, and the first connecting section and the first side wall are bonded through the first adhesive layer.

[0019] In the above solution, by providing a first adhesive layer on one side of the first connecting section facing the first side wall, the first adhesive layer can bond and fix the first guiding insulating member to the first side wall, realizing the fixed connection between the first guiding insulating member and the first side wall. The first guiding insulating member can be installed on the first side wall in advance, and the installation of the first guiding insulating member is convenient, fast, and has high installation stability.

[0020] According to some embodiments of the present application, the battery cell group includes first battery cells located at both ends in the first direction, the first connecting section is connected to the first battery cells, the guiding inclined surface is located on one side of the second connecting section facing the first side wall, and the opening is arranged facing away from the bottom wall.

[0021] In the above solution, the first connecting section is connected to the first battery cells. Before the battery cell group is put into the box, the first guiding insulating member can be installed on the side surface of the first battery cells facing the first side wall in advance. The guiding inclined surface of the second connecting section faces the first side wall. When the battery cell group is put into the box, the guiding inclined surface contacts the first side wall, and the guiding inclined surface can guide the battery cell group into the box and squeeze the second connecting section, so that under the guiding action of the crease, the second connecting section moves closer to the first connecting section along the first direction, and the opening becomes smaller, realizing the smooth entry of the battery cell group into the box.

[0022] According to some embodiments of the present application, a second adhesive layer is provided on one side of the first connecting section facing the first battery cells, and the first connecting section and the first battery cells are bonded through the second adhesive layer.

[0023] In the above solution, a second adhesive layer is provided on one side of the first connecting section facing the first battery cell. The second adhesive layer can bond and fix the first guiding insulating member to the first battery cell, facilitating the quick and stable installation of the first guiding insulating member.

[0024] According to some embodiments of the present application, the first connecting section and the second connecting section are integrally formed.

[0025] In the above solution, by integrally forming the first connecting section and the second connecting section, the first connecting section and the second connecting section do not require secondary assembly, with a simple structure and convenient processing, and high stability of the first guiding insulating member.

[0026] According to some embodiments of the present application, both the first connecting section and the second connecting section are made of insulating materials.

[0027] In the above solution, both the first connecting section and the second connecting section are made of insulating materials. The first guiding insulating member is arranged between the first side wall and the battery cell group, which can insulate between the battery cell group and the first side wall of the box body, effectively reducing the risk of electrical short circuit between the battery cell group and the box body.

[0028] According to some embodiments of the present application, the box body further includes two second side walls oppositely arranged along the second direction, and a second guiding insulating member is arranged between the second side wall and the battery cell group.

[0029] In the above solution, by arranging a second guiding insulating member between the second side wall and the battery cell group, the second guiding insulating member has a guiding function for the battery cell group in the second direction. Under the combined action of the second guiding insulating member and the first guiding insulating member, the battery cell group can be smoothly placed into the box, reducing the gap between the battery cell group and the second side wall.

[0030] In a second aspect, an electrical device is further provided in an embodiment of the present application. The electrical device includes the battery device in any of the foregoing embodiments, and the electrical device is used to provide electrical energy.

[0031] Since the electrical device provided in the embodiment of the present application adopts the battery device provided in any of the foregoing embodiments, it has the same technical effects, which will not be elaborated herein.

[0032] Additional aspects and advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. Description of the Drawings

[0033] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0034] Figure 1 Structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0035] Figure 2 Structural schematic diagram of a first guiding insulating member provided by some embodiments of the present application;

[0036] Figure 3 Structural schematic diagram of a battery cell group in a battery device before being put into a box provided by some embodiments of the present application;

[0037] Figure 4 Structural schematic diagram of a battery cell group in a battery device after being put into a box provided by some embodiments of the present application;

[0038] Figure 5 Front view of a first guiding insulating member provided by some embodiments of the present application;

[0039] Figure 6 Side view of a first guiding insulating member provided by some embodiments of the present application;

[0040] Figure 7 Front view of a first guiding insulating member provided by some other embodiments of the present application;

[0041] Figure 8 Structural schematic diagram of a battery cell group in a battery device before being put into a box provided by some other embodiments of the present application;

[0042] Figure 9 Structural schematic diagram of a battery cell group in a battery device after being put into a box provided by some other embodiments of the present application.

[0043] Icons: 1000 - vehicle; 100 - battery device; 200 - controller; 300 - motor; 10 - box body; 11 - bottom wall; 12 - first side wall; 20 - battery cell group; 21 - battery cell; 211 - first battery cell; 30 - first guiding insulating member; 31 - first connection section; 311 - first end; 32 - second connection section; 321 - second end; 322 - first sub - connection section; 323 - second sub - connection section; 33 - buffer section; 34 - crease; 35 - guiding inclined plane; 36 - opening; X - first direction. Detailed implementation manners

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts belong to the scope of protection of this application.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above accompanying drawings are used to distinguish different objects, rather than to describe a specific order or primary-secondary relationship.

[0046] Referring to "embodiments" in this application means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0047] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0049] The term "multiple" as used in this application refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0050] The battery device (BatteryApparatus) mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (BatteryCellAssembly) may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a combined series-parallel manner through a busbar component.

[0051] In some embodiments, the battery cell assembly (BatteryCellAssembly) is generally formed by arranging a plurality of battery cells; for example, the battery cell assembly may be a battery module (BatteryModule), and the battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. For example, the battery module may be formed by bundling a plurality of battery cells with cable ties.

[0052] In some embodiments, the battery device may be a battery pack, and the battery pack includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body.

[0053] For example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body by fixing the battery module in the box body.

[0054] For example, the battery cell assembly may also be accommodated in the box body by directly fixing a plurality of battery cells to the box body.

[0055] In some embodiments, the box body may be part of the chassis structure of a vehicle. For example, a part of the box body may become at least a part of the floor of the vehicle, or a part of the box body may become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0056] In some embodiments, the battery device may be an energy storage device. The energy storage device includes an energy storage container, an energy storage electrical cabinet, etc.

[0057] In the embodiments of the present application, the battery cell may be a secondary battery, and the secondary battery refers to a battery cell that can be activated by charging after the battery cell discharges and can be used continuously.

[0058] The battery cell may be, but is not limited to, a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc.

[0059] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the short circuit between the positive and negative electrodes and at the same time allow the active ions to pass through.

[0060] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material provided on at least one surface of the positive electrode current collector.

[0061] As an example, the positive electrode current collector has two surfaces opposite to each other in its own thickness direction, and the positive electrode active material is provided on any one or both of the two opposite surfaces of the positive electrode current collector.

[0062] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, stainless steel with silver plating on the surface, stainless steel, copper, aluminum, carbon electrode, carbon, nickel, or titanium, etc. may be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (such as aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0063] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphate, lithium transition metal oxide, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as the positive electrode active material of the battery monomer may also be used.

[0064] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0065] As an example, the negative electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum with silver plating on the surface, stainless steel with silver plating on the surface, stainless steel, copper, aluminum, carbon electrode, carbon, nickel, or titanium, etc. may be used.

[0066] In some embodiments, the negative electrode current collector has two surfaces opposite to each other in its own thickness direction, and the negative electrode active material is provided on any one or both of the two opposite surfaces of the negative electrode current collector.

[0067] As an example, the negative electrode active material may be a negative electrode active material for a battery monomer well-known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based material, tin-based material, and lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compound, silicon-carbon composite, silicon-nitrogen composite, and silicon alloy. The tin-based material may be selected from at least one of elemental tin, tin oxide compound, and tin alloy. However, the present application is not limited to these materials, and other conventional materials that can be used as the negative electrode active material of the battery monomer may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0068] In some embodiments, the separator is an isolation film. The present application does not particularly limit the type of the isolation film, and any well-known porous structure isolation film with good chemical stability and mechanical stability can be selected.

[0069] As an example, the main material of the isolation film can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramics. The isolation film can be a single-layer film or a multi-layer composite film, without particular limitation. When the isolation film is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component located between the positive and negative electrodes, or can be attached to the surfaces of the positive and negative electrodes.

[0070] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive electrode and the negative electrode, and simultaneously functions to transport ions and isolate the positive and negative electrodes.

[0071] In some embodiments, the electrode assembly is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0072] In some embodiments, the electrode assembly is a stacked structure.

[0073] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0074] In some embodiments, the housing includes an end cap and a housing body. The housing body is provided with an opening, and the end cap closes the opening to form a sealed space for accommodating components such as the electrode assembly and the electrolyte. The housing body can be provided with one or more openings. The end cap can also be provided with one or more.

[0075] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab of the electrode assembly. The electrode terminal can be directly connected to the tab or indirectly connected to the tab through a current collector. The electrode terminal can be provided on the end cap or on the housing body.

[0076] In some embodiments, a pressure relief valve is provided on the housing. The pressure relief valve is used to release the internal pressure of the battery cell.

[0077] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal prism battery, etc. The embodiments of the present application have no particular limitation.

[0078] In battery technology, when a battery module is placed into a box, the thickness adjustment is usually carried out by relying on the end plate structure. However, the end plate structure will increase the structural complexity of the battery module. With the iterative update of battery technology, especially for CTP modules, a battery module without an end plate is now used to be placed into the box. An insulating cover is provided between the battery cell group and the side wall of the box. However, the insulating cover is a conventional insulating component. When the size of the box is limited and the size of the battery cell group is slightly smaller than the internal size of the box, and the traditional overpressure method is used to place it into the box, due to the lack of a guiding structure on the insulating cover itself, the battery cell group cannot be overpressured into the box smoothly, resulting in difficulties in placing it into the box.

[0079] In view of this, to solve the problem of the difficulty in placing the battery cell group into the box, some embodiments of the present application provide a battery device. The battery device includes a battery cell group and a box. The battery cell group includes a plurality of battery cells stacked along a first direction; the box includes a bottom wall and two first side walls oppositely arranged along the first direction, and the battery cell group is arranged between the two first side walls; wherein, a first guiding insulating member is provided between each first side wall and the battery cell group, and the first guiding insulating member is configured to be compressed and deformed along the first direction after being subjected to the extrusion force between the battery cell group and the first side wall. The first guiding insulating member has a guiding inclined surface, and the guiding inclined surface is used to guide the battery cell group into the area between the two first side walls.

[0080] In the battery device provided by the embodiments of the present application, during the process of placing the battery cell group into the box, the guiding inclined surface on the first guiding insulating member can guide the battery cell group into the area between the two first side walls. And during the process of the battery cell group following the guiding inclined surface into the box, a certain pressure is formed between the battery cell group and the first side wall of the box. After the first guiding insulating member is subjected to the extrusion force between the battery cell group and the first side wall, it is compressed and deformed along the first direction. The first guiding insulating member can be gradually compressed during the process of the battery cell group being placed into the box, reducing the impact and vibration of the battery cell group during the process of being placed into the box, and reducing the gap between the battery cell group and the first side wall, ensuring the safety and stability of the battery cell group after being placed into the box, providing a reserved space for the expansion of the battery cell group, improving the installation efficiency and reliability of the entire battery cell group, reducing the difficulty of placing the battery cell group into the box, and facilitating the smooth placement of the battery cell group into the box.

[0081] The battery device disclosed in the embodiments of the present application can be but is not limited to being used in power-consuming devices such as vehicles, ships, or aircraft. The power supply system of the power-consuming device can be composed of the battery device disclosed in the present application.

[0082] The technical solutions described in the embodiments of the present application are applicable to various power-consuming devices using battery cells and battery devices, such as mobile phones, portable devices, laptop computers, battery cars, electric toys, electric tools, vehicles, ships, and spacecrafts. For example, spacecrafts include airplanes, rockets, space shuttles, and spaceships, etc.

[0083] For the convenience of description, the following embodiments will take a vehicle, which is an electrical device in an embodiment of the present application, as an example for illustration.

[0084] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is disposed inside the vehicle 1000, and the battery device 100 can be disposed at the bottom, the head or the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000. For example, the battery device 100 can be used as an operating power source of the vehicle 1000 and be used for the circuit system of the vehicle 1000, such as the working power requirements for starting, navigating and running of the vehicle 1000.

[0085] The vehicle 1000 may further 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, it is used for the working power requirements for starting, navigating and driving of the vehicle 1000.

[0086] In some embodiments of the present application, the battery device 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0087] The battery device includes a box body and battery cells. The battery cells are accommodated in the box body. Among them, the box body is used to provide an accommodation space for the battery cells, and the box body can adopt various structures.

[0088] An embodiment of the present application provides a battery device. Please refer to Figure 2 , Figure 3 and Figure 4 . The battery device 100 includes a battery cell group 20 and a box body 10. The battery cell group 20 includes a plurality of battery cells 21 stacked along a first direction X; the box body 10 includes a bottom wall 11 and two first side walls 12 oppositely disposed along the first direction X. The battery cell group 20 is disposed between the two first side walls 12; wherein, a first guiding insulating member 30 is disposed between each first side wall 12 and the battery cell group 20. The first guiding insulating member 30 is configured to be compressed and deformed along the first direction X after being subjected to the extrusion force between the battery cell group 20 and the first side wall 12. The first guiding insulating member 30 has a guiding inclined surface 35, and the guiding inclined surface 35 is used to guide the battery cell group 20 into the space between the two first side walls 12.

[0089] The housing 10 refers to the housing 10 structure that can provide a containing space for the battery cell group 20. The bottom wall 11 refers to the wall part of the housing 10 that can provide a bearing function for the battery cell group 20. The first side walls 12 refer to the two side walls that are oppositely arranged along the first direction X in the housing 10. The two first side walls 12 are spaced along the first direction X on the bottom wall 11 and are connected to both ends of the bottom wall 11 in the first direction X.

[0090] Multiple battery cells 21 in the battery cell group 20 are arranged along the first direction X, and are mainly applied in the CTP module. The multiple battery cells 21 in the battery cell group 20 are an integral whole, and the multiple battery cells 21 can form an integral whole through a gap grouping tool. Of course, it is also possible that a heat insulation pad is provided between two adjacent battery cells 21, and the heat insulation pad connects the two adjacent battery cells into an integral whole. That is to say, the battery cell group 20 is an integral whole when entering the box, and the gap grouping tool or the heat insulation pad structure in the battery cell group is not shown in the drawings.

[0091] A first guiding insulating member 30 is provided between each first side wall 12 and the battery cell group 20, which means that the number of the first guiding insulating members 30 is two, and one first guiding insulating member 30 is provided between each first side wall 12 and the battery cell group 20.

[0092] The first guiding insulating member 30 can be connected to the first side wall 12. Of course, the first guiding insulating member 30 can also be connected to one end of the battery cell group 20 in the first direction X. The first guiding insulating member 30 is located between the first side wall 12 and the battery cell group 20.

[0093] The first guiding insulating member 30 is made of insulating material, and the first guiding insulating member 30 can play an insulating function between the battery cell group 20 and the first side wall 12. Moreover, the first guiding insulating member 30 can be a component that provides guiding, insulating and pressurizing functions for the battery cell group 20 during the process of the battery cell group 20 entering the box. The first guiding insulating member 30 can be an integrally formed elastic buffer part 33, and it is sufficient that the first guiding insulating member 30 has a guiding inclined surface 35.

[0094] During the process of the battery cell group 20 entering the box, after the end plate structure is cancelled, the guiding inclined surface 35 of the first guiding insulating member 30 can play a guiding function on the battery cell group 20 to guide the battery cell group 20 into the housing 10, and the first guiding insulating member 30 can be extruded and deformed along the first direction X. After the battery cell group 20 enters the housing 10, the first guiding insulating member 30 can play a pressurizing function on the battery cell group 20, so that the battery cell group 20 can be installed more stably in the housing 10.

[0095] The first direction X can be perpendicular to the surface of the battery cell 21 with the largest area.

[0096] In the technical solution of the embodiment of the present application, a first guiding insulating member 30 is disposed between the battery cell 21 and the first side wall 12 of the box body 10. The first guiding insulating member 30 can insulate between the battery cell group 20 and the first side wall 12 of the box body 10, and can effectively reduce the risk of electrical short circuit between the battery cell group 20 and the box body 10. And the setting of the first guiding insulating member 30, during the process of the battery cell group 20 entering the box, the guiding inclined surface 35 on the first guiding insulating member 30 can guide the battery cell group 20 into the area between the two first side walls 12. And during the process of the battery cell group 20 entering the box following the guiding inclined surface 35, a certain pressure is formed between the battery cell group 20 and the first side wall 12 of the box body 10. After the first guiding insulating member 30 is subjected to the extrusion force of the battery cell group 20 and the first side wall 12, it is compressed and deformed along the first direction X. The first guiding insulating member 30 can be gradually compressed during the process of the battery cell group 20 entering the box, reducing the impact and vibration of the battery cell group 20 during the process of entering the box, and reducing the gap between the battery cell group 20 and the first side wall 12, ensuring the safety and stability of the battery cell group 20 after entering the box, providing a reserved space for the expansion of the battery cell group 20, improving the installation efficiency and reliability of the entire battery cell group 20, reducing the difficulty of the battery cell group 20 entering the box, and facilitating the smooth entry of the battery cell group 20 into the box.

[0097] According to some embodiments of the present application, please refer to Figure 2 、 Figure 5 and Figure 6 , the first guiding insulating member 30 includes a first connecting section 31 and a second connecting section 32 connected to each other. The first connecting section 31 and the second connecting section 32 are arranged at an angle. The first connecting section 31 is used to connect with the first side wall 12 or the battery cell group 20, and the guiding inclined surface 35 is located on the second connecting section 32; the first connecting section 31 and the second connecting section 32 are connected by a crease 34, and the crease 34 is used to allow the second connecting section 32 to approach the first connecting section 31 along the first direction X.

[0098] The included angle between the first connecting section 31 and the second connecting section 32 can be an acute angle. When the battery cell group 20 has not entered the box, the included angle between the first connecting section 31 and the second connecting section 32 is a first included angle, and the range of the first included angle can be 10°-30°. After the battery cell group 20 enters the box, the battery cell group 20 will squeeze the second connecting section 32 to approach the first connecting section 31, and the included angle between the first connecting section 31 and the second connecting section 32 is a second included angle, and the range of the second included angle can be 2°-10°. Of course, the specific values of the first included angle and the second included angle can be determined according to the actual situation.

[0099] The materials of the first connecting section 31 and the second connecting section 32 can be polycarbonate (PC, Polycarbonate). The hardness of the first connecting section 31 and the second connecting section 32 can be 70 HRR - 80 HRR (Rockwell hardness). By setting the hardness of the first connecting section 31 and the second connecting section 32 to 70 HRR - 80 HRR, when the second connecting section 32 is in extrusion contact with the first side wall 12 or the battery module group 20, the second connecting section 32 has a certain rigidity and is not prone to local deformation itself. It can only fold along the crease 34 and move closer to the first connecting section 31, which is beneficial for guiding the battery module group 20 into the box. Similarly, the surface roughness Ra value of the first connecting section 31 and the second connecting section 32 can be 0.1μm - 1.0μm. By selecting the surface roughness Ra value of the first connecting section 31 and the second connecting section 32 to be 0.1μm - 1.0μm, the surface of the guiding inclined plane 35 is smoother, with less friction, and can smoothly guide the battery module group 20 into the box.

[0100] The first guiding insulating part 30 includes a first connecting section 31 and a second connecting section 32 that are connected to each other, and the first connecting section 31 and the second connecting section 32 are connected by a crease 34. The first connecting section 31 and the second connecting section 32 are arranged at an angle, and the crease 34 can cause the second connecting section 32 to undergo extrusion deformation towards the first connecting section 31. When the first connecting section 31 is connected to the first side wall 12, the guiding inclined plane 35 on the second connecting section 32 can contact the side surface of the battery cell 21 at one end in the first direction X of the battery module group 20, guide the battery module group 20 into the box and extrude the second connecting section 32, so that the second connecting section 32 moves closer to the first connecting section 31 along the first direction X under the guiding action of the crease 34, realizing the smooth entry of the battery module group 20 into the box. Similarly, when the first connecting section 31 is connected to the battery module group 20, the guiding inclined plane 35 on the second connecting section 32 can contact the first side wall 12, guide the battery module group 20 into the box and extrude the second connecting section 32, so that the second connecting section 32 moves closer to the first connecting section 31 along the first direction X, realizing the smooth entry of the battery module group 20 into the box.

[0101] According to some embodiments of the present application, please refer to Figure 2 , the first guiding insulating part 30 further includes a buffer part 33, and the buffer part 33 is arranged between the first connecting section 31 and the second connecting section 32, and the buffer part 33 is connected to the first connecting section 31.

[0102] The buffer part 33 refers to a buffer elastic component with buffer deformation ability arranged between the first connecting section 31 and the second connecting section 32. The buffer part 33 can be a buffer component such as a spring, a rubber column or a compressible structure.

[0103] Optionally, the material of the buffer portion 33 may be microcellular polypropylene foam (MPP), or foamed polystyrene. The buffer portion 33 is connected to the first connecting section 31, that is, the buffer portion 33 is arranged on the first connecting section 31, and the buffer portion 33 and the first connecting section 31 may be connected by bonding.

[0104] By providing a buffer portion 33 between the first connecting section 31 and the second connecting section 32, the buffer portion 33 can further buffer the compression deformation of the first guide insulating member 30, so that the first guide insulating member 30 has better compression and resilience performance, and the first guide insulating member 30 is not easy to deform and fail under long-term compression. In the process of the battery cell group 20 entering the box, the second connecting section 32 moves closer to the first connecting section 31 along the fold 34, and the buffer portion 33 is compressed and deformed at the same time, providing the required installation space for the battery cell group 20, so that the battery cell group 20 can smoothly enter the box 10, and provide a certain extrusion prestress to the battery cell group 20, ensuring the structural stability of the battery cell group 20 in the box 10. In the process of loading and using the battery device 100, the buffer portion 33 can absorb the collision force from different directions, reduce the mutual influence between the adjacent battery cells 21 of the battery cell group 20, thereby improving the service life and reliability of the entire battery device.

[0105] According to some embodiments of this application, please refer to Figure 2 The first connecting section 31 has a first end 311 away from the fold 34 , and the second connecting section 32 has a second end 321 away from the fold 34 . There is a gap between the first end 311 and the second end 321 to form an opening 36 arranged opposite to the fold 34 .

[0106] The first end 311 refers to an end of the first connecting section 31 away from the fold 34, and the second end 321 refers to an end of the second connecting section 32 away from the fold 34. A gap exists between the first end 311 and the second end 321, which means that the first end 311 and the second end 321 do not contact each other, thereby forming an opening 36 disposed opposite to the fold 34.

[0107] There is a gap between the first end 311 and the second end 321. An opening 36 is formed between the first end 311 and the second end 321 of the first guiding insulating member 30, which is opposite to the crease 34. That is, the shapes of the first connecting section 31 and the second connecting section 32 in the first guiding insulating member 30 are in a V-shaped structure. After the guiding inclined surface 35 on the second connecting section 32 contacts and is pressed against the first side wall 12 or the battery cell group 20, it guides the battery cell group 20 into the box body 10. And during the process of the battery cell group 20 entering the box, the opening 36 on the first guiding insulating member 30 allows the second connecting section 32 to move closer to the first connecting section 31, realizing the smooth entry of the battery cell group 20 into the box.

[0108] According to some embodiments of the present application, please refer to Figure 7 , the second connecting section 32 includes a first sub-connecting section 322 and a second sub-connecting section 323. The first sub-connecting section 322 and the second sub-connecting section 323 are arranged at an angle. One end of the first sub-connecting section 322 is connected to the crease 34, the other end of the first sub-connecting section 322 is connected to one end of the second sub-connecting section 323, and the other end of the second sub-connecting section 323 is arranged adjacent to the first connecting section 31.

[0109] The fact that the first sub-connecting section 322 and the second sub-connecting section 323 in the second connecting section 32 are arranged at an angle means that the second connecting section 32 is in an overall V shape. The other end of the second sub-connecting section 323 is arranged adjacent to the first connecting section 31. After the second connecting section 32 is subjected to an extrusion force, both the first sub-connecting section 322 and the second sub-connecting section 323 can move closer to the first connecting section 31, and the free end of the second sub-connecting section 323 can slide along the first connecting section 31.

[0110] The second connecting section 32 includes a first sub-connecting section 322 and a second sub-connecting section 323. The first sub-connecting section 322 and the second sub-connecting section 323 are arranged at an angle, and the other end of the second sub-connecting section 323 is arranged adjacent to the first connecting section 31. During the extrusion deformation process of the first guiding insulating member 30, both the first sub-connecting section 322 and the second sub-connecting section 323 can move closer to the first connecting section 31. And the end of the second sub-connecting section 323 far from the first sub-connecting section 322 is adjacent to the first connecting section 31. The free end of the second sub-connecting section 323 can slide along the length direction of the first connecting section 31 in the direction away from the crease 34, realizing the compression deformation of the first guiding insulating member 30.

[0111] According to some embodiments of the present application, please refer to Figure 3 and Figure 4 , the first connecting section 31 is connected to the first side wall 12. The guiding inclined surface 35 is located on the side of the second connecting section 32 facing the battery cell group 20, and the opening 36 faces the bottom wall 11.

[0112] The first connecting section 31 is connected to the first side wall 12, which means that the first guide insulating member 30 is installed on the first side wall 12 through the first connecting section 31. There are many ways to connect the first connecting section 31 to the first side wall 12, and the first connecting section 31 and the first side wall 12 can be connected by bonding, clamping or riveting, etc. The connection method of the first connecting section 31 and the first side wall 12 can be determined according to actual conditions.

[0113] The first connecting section 31 is connected to the first side wall 12. Before the battery cell group 20 is put into the box, the first guiding insulating member 30 can be installed on the first side wall 12 in advance. The guiding inclined surface 35 of the second connecting section 32 faces the battery cell group 20. When the battery cell group 20 is put into the box, the guiding inclined surface 35 contacts the side surface of the battery cell 21 at one end of the first direction X in the battery cell group 20. The opening 36 faces the bottom wall 11, guides the battery cell group 20 into the box and squeezes the second connecting section 32. Under the guidance of the fold 34, the second connecting section 32 moves closer to the first connecting section 31 along the first direction X, and the opening 36 becomes smaller, so that the battery cell group 20 can be smoothly put into the box.

[0114] According to some embodiments of the present application, a first adhesive layer is provided on a side of the first connecting section 31 facing the first side wall 12 , and the first connecting section 31 and the first side wall 12 are bonded to each other through the first adhesive layer.

[0115] The first connection section 31 is bonded to the first side wall 12 through a first adhesive layer, which may be a double-sided adhesive tape, and the release paper on one side of the double-sided adhesive tape is torn off and then bonded to the first connection section 31. After the release paper on the side of the double-sided adhesive tape facing the first side wall 12 is torn off, the first guide insulating member 30 can be bonded and fixed to the first side wall 12. Of course, the first adhesive layer can be fully spread on the side of the first connection section 31 facing the first side wall 12 to enhance the bonding firmness of the first guide insulating member 30 and the first side wall 12.

[0116] By providing a first adhesive layer on the side of the first connecting section 31 facing the first side wall 12, the first adhesive layer can make the first guide insulating member 30 bonded and fixed to the first side wall 12, thereby realizing a fixed connection between the first guide insulating member 30 and the first side wall 12. The first guide insulating member 30 can be installed on the first side wall 12 in advance, and the first guide insulating member 30 is easy and quick to install, and the first guide insulating member 30 has high installation stability.

[0117] According to some embodiments of this application, please refer to Figure 8 and Figure 9 The battery cell group 20 includes a first battery cell 211 located at both ends of the first direction X, the first connecting section 31 is connected to the first battery cell 211, the guiding slope 35 is located on the side of the second connecting section 32 facing the first side wall 12, and the opening 36 is set to the side away from the bottom wall 11.

[0118] The multiple battery cells 21 in the battery cell group 20 are distributed in a matrix. The first battery cell 211 refers to the battery cells 21 at both ends of the battery cell group 20 in the first direction X. The first connecting section 31 is fixedly connected to the side surface of the first battery cell 211, and then the first guiding insulating member 30 is installed on the first battery cell 211.

[0119] Connect the first connecting section 31 to the first battery cell 211. Before the battery cell group 20 is put into the box, the first guiding insulating member 30 can be installed in advance on the side surface of the first battery cell 211 facing the first side wall 12, and the guiding inclined surface 35 of the second connecting section 32 faces the first side wall 12. When the battery cell group 20 is put into the box, the guiding inclined surface 35 contacts the first side wall 12. The guiding inclined surface 35 can guide the battery cell group 20 into the box and squeeze the second connecting section 32, so that under the guiding action of the crease 34, the second connecting section 32 moves closer to the first connecting section 31 along the first direction X, and the opening 36 becomes smaller, realizing the smooth entry of the battery cell group 20 into the box.

[0120] According to some embodiments of the present application, a second adhesive layer is provided on the side of the first connecting section 31 facing the first battery cell 211, and the first connecting section 31 and the first battery cell 211 are bonded through the second adhesive layer.

[0121] The second adhesive layer can be a double-sided adhesive tape. After one side of the double-sided adhesive tape tears off the release paper, it is bonded to the first connecting section 31. After tearing off the release paper on the side of the double-sided adhesive tape facing the first battery cell 211, the bonding and fixing of the first guiding insulating member 30 and the first battery cell 211 can be realized. Of course, the second adhesive layer can be fully paved on the side of the first connecting section 31 facing the first battery cell 211 to enhance the bonding firmness between the first guiding insulating member 30 and the first battery cell 211.

[0122] By providing a second adhesive layer on the side of the first connecting section 31 facing the first battery cell 211, the second adhesive layer can bond and fix the first guiding insulating member 30 and the first battery cell 211. The installation of the first guiding insulating member 30 is convenient and fast, and the installation stability of the first guiding insulating member 30 is high.

[0123] According to some embodiments of the present application, the first connecting section 31 and the second connecting section 32 are integrally formed.

[0124] Integrally forming the first connecting section 31 and the second connecting section 32 does not require secondary assembly of the first connecting section 31 and the second connecting section 32. The structure is simple, the processing is convenient, and the stability of the first guiding insulating member 30 is high.

[0125] According to some embodiments of the present application, both the first connecting section 31 and the second connecting section 32 are made of insulating materials.

[0126] The first connection segment 31 and the second connection segment 32 are insulating parts. For example, the materials of the first connection segment 31 and the second connection segment 32 can be polycarbonate.

[0127] By adopting the first connection segment 31 and the second connection segment 32 both as insulating materials, the first guiding insulating part 30 is arranged between the first side wall 12 and the battery cell group 20, which can play an insulating role between the battery cell group 20 and the first side wall 12 of the box body 10, and can effectively reduce the risk of electrical short circuit between the battery cell group 20 and the box body 10.

[0128] According to some embodiments of the present application, the box body 10 further includes two second side walls oppositely arranged along the second direction, and a second guiding insulating part is arranged between the second side wall and the battery cell group 20.

[0129] The second guiding insulating part has the same structure as the first guiding insulating part 30, but their installation positions are different.

[0130] A second guiding insulating part is arranged between the second side wall and the battery cell group 20, and the second guiding insulating part can be arranged on the second side wall or on the battery cell group 20.

[0131] By arranging a second guiding insulating part between the second side wall and the battery cell group 20, the second guiding insulating part has a guiding function for the battery cell group 20 in the second direction. Under the combined action of the second guiding insulating part and the first guiding insulating part 30, the battery cell group 20 can be smoothly put into the box, and the gap between the battery cell group 20 and the second side wall is reduced.

[0132] The embodiment of the present application also provides an electrical device, which includes the battery device in any of the foregoing embodiments, and the electrical device is used to provide electric energy.

[0133] In some embodiments, please refer to Figures 2 to 9, the battery device 100 includes a battery cell group 20 and a box body 10. The battery cell group 20 includes a plurality of battery cells 21 stacked along the first direction X. The box body 10 includes a bottom wall 11 and two first side walls 12 oppositely arranged along the first direction X. The battery cell group 20 is arranged between the two first side walls 12. Wherein, a first guiding insulating member 30 is arranged between each first side wall 12 and the battery cell group 20. The first guiding insulating member 30 is configured to be compressed and deformed along the first direction X after being subjected to the extrusion force between the battery cell group 20 and the first side wall 12. The first guiding insulating member 30 has a guiding inclined surface 35, and the guiding inclined surface 35 is used to guide the battery cell group 20 into the space between the two first side walls 12. The first guiding insulating member 30 includes a first connecting section 31 and a second connecting section 32 connected to each other. The first connecting section 31 and the second connecting section 32 are arranged at an angle. The first connecting section 31 is used to connect with the first side wall 12 or the battery cell group 20, and the guiding inclined surface 35 is located on the second connecting section 32. The first connecting section 31 and the second connecting section 32 are connected by a crease 34, and the crease 34 is used to allow the second connecting section 32 to move closer to the first connecting section 31 along the first direction X.

[0134] During the process of the battery cell group 20 being placed into the box, the guiding inclined surface 35 on the first guiding insulating member 30 can guide the battery cell group 20 into the area between the two first side walls 12. And during the process of the battery cell group 20 following the guiding inclined surface 35 into the box, a certain pressure is formed between the battery cell group 20 and the first side wall 12 of the box body 10. After the first guiding insulating member 30 is subjected to the extrusion force of the battery cell group 20 and the first side wall 12, it is compressed and deformed along the first direction X. The first guiding insulating member 30 can be gradually compressed during the process of the battery cell group 20 being placed into the box, reducing the impact and vibration of the battery cell group 20 during the box - placing process, and reducing the gap between the battery cell group 20 and the first side wall 12, ensuring the safety and stability of the battery cell group 20 after being placed into the box, providing a reserved space for the expansion of the battery cell group 20, improving the installation efficiency and reliability of the entire battery cell group 20, reducing the difficulty of placing the battery cell group 20 into the box, and facilitating the smooth placement of the battery cell group 20 into the box. The first guiding insulating member 30 includes a first connecting section 31 and a second connecting section 32 that are connected to each other, and the first connecting section 31 and the second connecting section 32 are connected by a crease 34. The first connecting section 31 and the second connecting section 32 are arranged at an angle, and the crease 34 can cause the second connecting section 32 to be extruded and deformed towards the first connecting section 31. When the first connecting section 31 is connected to the first side wall 12, the guiding inclined surface 35 on the second connecting section 32 can contact the side surface of the battery cell 21 at one end of the battery cell group 20 in the first direction X, guide the battery cell group 20 into the box and extrude the second connecting section 32, so that the second connecting section 32 approaches the first connecting section 31 along the first direction X under the guiding action of the crease 34, realizing the smooth placement of the battery cell group 20 into the box. Similarly, when the first connecting section 31 is connected to the battery cell group 20, the guiding inclined surface 35 on the second connecting section 32 can contact the first side wall 12, guide the battery cell group 20 into the box and extrude the second connecting section 32, so that the second connecting section 32 approaches the first connecting section 31 along the first direction X, realizing the smooth placement of the battery cell group 20 into the box.

[0135] In some embodiments, the first guiding insulating member 30 further includes a buffer portion 33. The buffer portion 33 is arranged between the first connecting section 31 and the second connecting section 32, and the buffer portion 33 is connected to the first connecting section 31. The first connecting section 31 has a first end 311 away from the crease 34, the second connecting section 32 has a second end 321 away from the crease 34, and there is a gap between the first end 311 and the second end 321 to form an opening 36 opposite to the crease 34.

[0136] The buffer portion 33 can further buffer the compression deformation of the first guide insulating member 30, so that the first guide insulating member 30 has better compression and resilience performance, and the first guide insulating member 30 is not easy to deform and fail under long-term compression. In the process of the battery cell group 20 entering the box, the second connecting section 32 moves closer to the first connecting section 31 along the fold 34, and the buffer portion 33 is compressed and deformed at the same time, providing the required installation space for the battery cell group 20, so that the battery cell group 20 can smoothly enter the box body 10, and provide a certain extrusion prestress to the battery cell group 20, to ensure the structural stability of the battery cell group 20 in the box body 10. In the process of loading and using the battery device, the buffer portion 33 can absorb the collision force from different directions, reduce the mutual influence between the adjacent battery cells 21 of the battery cell group 20, thereby improving the service life and reliability of the entire battery device. A gap is provided between the first end 311 and the second end 321, and an opening 36 is formed between the first end 311 and the second end 321 of the first guide insulating member 30 and is arranged opposite to the fold 34, that is, the first connecting section 31 and the second connecting section 32 in the first guide insulating member 30 are in a V-shaped structure. After the guiding inclined surface 35 on the second connecting section 32 contacts and is compressed with the first side wall 12 or the battery cell group 20, the battery cell group 20 is guided to enter the box body 10. In the process of the battery cell group 20 being put into the box, the opening 36 on the first guide insulating member 30 allows the second connecting section 32 to move toward the first connecting section 31, so that the battery cell group 20 can be smoothly put into the box.

[0137] In some embodiments, the first connecting section 31 is connected to the first side wall 12, the guide slope 35 is located on the side of the second connecting section 32 facing the battery cell group 20, and the opening 36 is arranged toward the bottom wall 11; a first adhesive layer is provided on the side of the first connecting section 31 facing the first side wall 12, and the first connecting section 31 and the first side wall 12 are bonded by the first adhesive layer.

[0138] In some embodiments, the battery cell group 20 includes a first battery cell 211 located at both ends of the first direction X, the first connecting section 31 is connected to the first battery cell 211, the guiding slope 35 is located on the side of the second connecting section 32 facing the first side wall 12, and the opening 36 is arranged on the side away from the bottom wall 11. A second adhesive layer is arranged on the side of the first connecting section 31 facing the first battery cell 211, and the first connecting section 31 and the first battery cell 211 are bonded by the second adhesive layer.

[0139] Connect the first connecting section 31 to the first battery cell 211. Before the battery cell group 20 is put into the box, the first guiding insulating member 30 can be installed in advance on the side of the first battery cell 211 facing the first side wall 12, and the guiding inclined surface 35 of the second connecting section 32 faces the first side wall 12. When the battery cell group 20 is put into the box, the guiding inclined surface 35 contacts the first side wall 12. The guiding inclined surface 35 can guide the battery cell group 20 into the box and squeeze the second connecting section 32, so that under the guiding action of the crease 34, the second connecting section 32 moves closer to the first connecting section 31 along the first direction X, and the opening 36 becomes smaller, realizing the smooth putting of the battery cell group 20 into the box. By providing a second adhesive layer on the side of the first connecting section 31 facing the first battery cell 211, the second adhesive layer can bond and fix the first guiding insulating member 30 to the first battery cell 211. The installation of the first guiding insulating member 30 is convenient and fast, and the installation stability of the first guiding insulating member 30 is high.

[0140] In some embodiments, the first connecting section 31 and the second connecting section 32 are integrally formed, and both the first connecting section 31 and the second connecting section 32 are made of insulating materials.

[0141] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, Comprising: A battery cell group including a plurality of battery cells stacked in a first direction; A box body including a bottom wall and two first side walls oppositely arranged along the first direction, and the battery cell group is arranged between the two first side walls; Wherein, a first guiding insulating member is arranged between each first side wall and the battery cell group, and the first guiding insulating member is configured to be compressed and deformed along the first direction after being subjected to the extrusion force between the battery cell group and the first side wall. The first guiding insulating member has a guiding inclined surface, and the guiding inclined surface is used to guide the battery cell group into the space between the two first side walls.

2. The battery device according to claim 1, characterized in that, The first guiding insulating member includes a first connecting section and a second connecting section connected to each other. The first connecting section and the second connecting section are arranged at an angle. The first connecting section is used to connect with the first side wall or the battery cell group, and the guiding inclined surface is located on the second connecting section; The first connecting section and the second connecting section are connected by a crease, and the crease is used to allow the second connecting section to move closer to the first connecting section along the first direction.

3. The battery device according to claim 2, wherein The first guiding insulating member further includes a buffer portion, and the buffer portion is arranged between the first connecting section and the second connecting section and is connected to the first connecting section.

4. The battery device according to claim 2, characterized in that, The first connecting section has a first end far from the crease, and the second connecting section has a second end far from the crease. There is a gap between the first end and the second end to form an opening opposite to the crease.

5. The battery device according to claim 2, characterized in that, The second connecting section includes a first sub-connecting section and a second sub-connecting section arranged at an angle. One end of the first sub-connecting section is connected to the crease, the other end of the first sub-connecting section is connected to one end of the second sub-connecting section, and the other end of the second sub-connecting section is arranged in abutment against the first connecting section.

6. The battery device according to claim 4, wherein The first connecting section is connected to the first side wall, the guiding inclined surface is located on the side of the second connecting section facing the battery cell group, and the opening faces the bottom wall.

7. The battery device according to claim 6, characterized in that, A first adhesive layer is arranged on the side of the first connecting section facing the first side wall, and the first connecting section and the first side wall are bonded through the first adhesive layer.

8. The battery device according to claim 4, characterized in that, The battery cell group includes first battery cells at both ends in the first direction. The first connecting section is connected to the first battery cells, the guiding inclined surface is located on the side of the second connecting section facing the first side wall, and the opening faces away from the bottom wall.

9. The battery device according to claim 8, characterized in that, A second adhesive layer is arranged on the side of the first connecting section facing the first battery cells, and the first connecting section and the first battery cells are bonded through the second adhesive layer.

10. The battery device according to claim 2, characterized in that, The first connecting section and the second connecting section are integrally formed.

11. The battery device according to claim 2, characterized in that, Both the first connecting section and the second connecting section are made of insulating materials.

12. The battery device according to claim 1, characterized in that, The box body further includes two second side walls oppositely arranged along a second direction, and a second guiding insulating member is arranged between the second side walls and the battery cell group.

13. An electrical device, characterized in that, Including the battery device according to any one of claims 1-12.

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