Battery device and electric equipment

Abstract

The embodiment of the invention discloses a battery device and electric equipment. The battery device comprises a box body used for accommodating a battery monomer, and a beam is arranged in the box body; the heat management component is arranged in the box body and is used for adjusting the temperature of the battery monomers, the heat management component comprises a flow guide pipe, and the flow guide pipe is used for injecting or guiding out fluid in the heat management component; the flow guide pipe penetrates through the fixing piece and is fixed with the fixing piece, and the fixing piece is fixed with the beam. According to the battery device and the electric equipment provided by the embodiment of the invention, the reliability and the stability of the battery device can be improved.

Description

Technical Field

[0001] This application relates to the field of batteries, and more specifically, to a battery device and an electrical appliance. Background Technology

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

[0003] In the development of battery technology, besides improving battery performance, safety is also a crucial issue that cannot be ignored. If battery safety cannot be guaranteed, then the battery is unusable. Therefore, how to enhance battery safety and reliability is a pressing technical problem that needs to be solved in battery technology. Summary of the Invention

[0004] This application provides a battery device and an electrical appliance that can improve the reliability and stability of the battery.

[0005] In a first aspect, a battery device is provided, comprising: a housing for housing a single battery cell, the housing having a beam disposed therein; a thermal management component disposed in the housing for regulating the temperature of the single battery cell, the thermal management component including a flow guide for injecting or draining fluid from the interior of the thermal management component; and a fixing member, the flow guide penetrating the fixing member and being fixed thereto, the fixing member being fixed to the beam.

[0006] Therefore, the battery device of this application embodiment can achieve relative fixation between the guide tube and the beam inside the box by setting the fixing member, which improves the stability of the guide tube during battery use, reduces the risk of the guide tube becoming loose, and thus reduces the risk of fluid leakage inside the thermal management component, so as to improve the reliability and stability of the battery device.

[0007] In some embodiments, the guide tube extends through the fixing member along the thickness direction, and a stepped structure is provided on one side of the fixing member perpendicular to the thickness direction of the fixing member, so as to reduce the deformation of the fixing member, increase the structural strength and stability of the fixing member, and thus improve the stability of the guide tube.

[0008] In some embodiments, the beam includes a first beam and a second beam that extend in different directions and intersect, and the fastener is fixed to the first beam and the second beam respectively to improve the stability between the fastener and the beam.

[0009] In some embodiments, the fastener includes a first fixing part and a second fixing part. The first fixing part is fixed to the first beam via a first connector, which passes through the first fixing part and is fixed to the first beam. The second fixing part is fixed to the second beam via a second connector, which passes through the second fixing part and is fixed to the second beam. The structure is simple and stable, and easy to install.

[0010] In some embodiments, the first fixing part and / or the second fixing part are provided with reinforcing ribs to enhance the structural strength of the fixing member and increase the connection stability between the fixing member and the first beam and between the fixing member and the second beam.

[0011] In some embodiments, the housing includes: a first housing portion, which is a hollow structure with an opening, the beam being located within the first housing portion, and the thermal management component being disposed thereon; and a second housing portion for covering the opening, to which the fastener is fixed. The fastener can fix the guide pipe to the beam within the first housing portion of the housing, and also to the second housing portion, further improving the stability of the guide pipe, reducing the risk of it becoming loose, and consequently reducing the risk of fluid leakage within the thermal management component, thereby improving the reliability and stability of the battery device.

[0012] In some embodiments, the second housing portion includes an opening area through which the guide tube passes to expose the guide tube, so that the guide tube extends to the outside of the housing to facilitate the injection or extraction of fluid inside the thermal management component through the guide tube.

[0013] In some embodiments, the fastener is fixed to the first wall of the second housing portion, the first wall being perpendicular to the height direction of the housing, so as to improve the structural stability between the fastener and the housing.

[0014] In some embodiments, a sealing element is provided between the fastener and the second housing portion to improve the sealing performance between the fastener and the second housing portion.

[0015] In some embodiments, the fastener is provided with a groove with an opening facing the second housing portion. The groove is used to accommodate the seal, so as to facilitate the positioning and installation of the seal, and can also reduce the space occupied by the seal inside the housing, thereby improving the space utilization of the housing.

[0016] In some embodiments, the fastener includes a third fixing part, which is fixed to the second housing part by a third connector. The third connector passes through the second housing part and is fixed to the third fixing part. The structure is simple and easy to implement, and the connection strength and stability between the fastener and the second housing part can be improved by the third connector.

[0017] In some embodiments, a protruding structure is provided on the side of the third fixing part away from the second housing part. The protruding structure protrudes in a direction away from the second housing part to increase the thickness of the third fixing part, improve the structural strength, and enhance the connection strength and stability between the fixing member and the second housing part.

[0018] In some embodiments, the fastener is a die-cast structure, which is convenient for processing and can improve the structural strength of the fastener, thereby improving the stability of the guide tube.

[0019] In some embodiments, the fastener is provided with a through hole through which the guide tube passes. The depth of the through hole ranges from 2mm to 9mm, and optionally, the depth ranges from 4mm to 9mm. On the one hand, a through hole depth greater than or equal to 2mm, or further, greater than or equal to 4mm, can improve the structural strength and stability of the fastener, thereby improving the stability of the guide tube and the battery device. On the other hand, a through hole depth less than or equal to 9mm can reduce the space occupied by the fastener and improve the internal space utilization of the battery device.

[0020] In a second aspect, an electrical device is provided, comprising: a battery device as described in the first aspect or any embodiment of the first aspect, the battery device being used to supply power to the electrical device.

[0021] In some embodiments, the electrical equipment is a vehicle, a ship, or a spacecraft. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a vehicle according to one embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of a battery device according to an embodiment of this application;

[0024] Figure 3 This is a partial structural diagram of a battery device according to an embodiment of this application;

[0025] Figure 4 This is an exploded view of a partial structure of a battery device according to an embodiment of this application;

[0026] Figure 5 This is an exploded view of another partial structure of a battery device according to one embodiment of this application;

[0027] Figure 6 This is a schematic diagram of a partial structure of a battery device according to an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of another partial structure of a battery device according to an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the structure of a fastener according to an embodiment of this application;

[0030] Figure 9 This is another structural schematic diagram of a fastener according to one embodiment of this application;

[0031] Figure 10 This is an exploded structural diagram of the box body according to one embodiment of this application;

[0032] Figure 11 This is a cross-sectional schematic diagram of a battery device according to an embodiment of this application;

[0033] Figure 12 This is a cross-sectional schematic diagram of a battery device according to another embodiment of this application;

[0034] Figure 13 This is an exploded structural diagram of the box body according to another embodiment of this application;

[0035] Figure 14 This is a cross-sectional schematic diagram of a battery device according to another embodiment of this application.

[0036] The accompanying drawings are not drawn to scale.

[0037] Figure label:

[0038] 1-Vehicle; 10-Battery unit; 11-Box; 11a-Electrical cavity; 11b-Collection cavity; 111-First box section; 1111-Protective component; 112-Second box section; 1121-Opening area; 1122-First wall; 113-Beam; 1131-First beam; 1132-Second beam; 12-Thermal management component; 121-Guide pipe; 1211-Riveting block; 13-Fixing component; 131-First fixing part; 1311-Reinforcing rib; 132-Second fixing part; 133-Third fixing part; 1331-Protruding structure; 134-Step structure; 135-Sealing component; 136-Groove; 137-Through hole; 141-First connector; 142-Second connector; 143-Third connector; 15-Buffer component; 20-Battery cell; 201-Electrode terminal; 30-Controller; 40 Motor. Detailed Implementation

[0039] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

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

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0045] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0046] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0047] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0048] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0049] In some implementations, the battery cell in this application embodiment can be a metal battery. Specifically, the metal battery may include lithium metal secondary batteries, sodium metal batteries, or magnesium metal batteries, etc. This application embodiment does not limit this.

[0050] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0051] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0052] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.

[0053] As an example, the positive electrode current collector can be a metal foil, a foamed metal, or a composite current collector. For example, as a metal foil, it can be silver-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium, etc. Foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. Composite current collectors can include a polymer material base layer and a metal layer. Composite current collectors can be formed by forming a metal material (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.).

[0054] As an example, the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. However, this application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium phosphate include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), lithium iron phosphate and carbon composites, lithium manganese phosphate (such as LiMnPO4), lithium manganese phosphate and carbon composites, lithium manganese iron phosphate, and lithium manganese iron phosphate and carbon composites.

[0055] In some embodiments, the negative electrode may be a negative electrode sheet, which may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0056] As an example, the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0057] As an example, the negative electrode current collector can be a metal foil, a foamed metal, or a composite current collector. For example, as a metal foil, it can be silver-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, or titanium, etc. Composite current collectors can include a polymer material base layer and a metal layer. Foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. Composite current collectors can be formed by forming a metal material (copper, copper 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.).

[0058] In some embodiments, the electrode assembly further includes an isolator disposed between the positive and negative electrodes.

[0059] In some embodiments, the separator is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0060] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene and polyvinylidene fluoride, and ceramic.

[0061] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0062] In some embodiments, the battery cell also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This application does not impose specific limitations on the type of electrolyte; it can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0063] In some embodiments, the electrode assembly is provided with tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0064] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc. The housing includes a shell and end caps.

[0065] The battery device mentioned in the embodiments of this application may include a single physical module containing one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed via a busbar.

[0066] In some embodiments, the battery device may be a battery pack, which includes a housing and individual battery cells, with the individual battery cells or battery modules housed within the housing.

[0067] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0068] In some embodiments, the battery device may be located within an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0069] The development of battery device technology must consider multiple design factors simultaneously, such as performance parameters like energy density, cycle life, discharge capacity, and charge / discharge rate. Additionally, battery device safety must be considered. During charging and discharging, battery devices experience significant temperature variations. Therefore, thermal management components can be incorporated within the battery device to regulate its temperature. Specifically, these thermal management components contain a fluid to regulate the temperature of individual battery cells. This component may include a guide tube for injecting or draining the internal fluid. If the guide tube is not securely attached to the battery device housing, or is only bound with insulating cable ties, the guide tube is unstable and prone to loosening during battery use. This can lead to fluid leakage within the thermal management component, affecting the reliability and stability of the battery device.

[0070] Therefore, this application provides a battery device and an electrical appliance that can solve the above-mentioned problems. The battery device of this application includes a housing for accommodating individual battery cells, with a beam disposed within the housing. The battery device also includes a thermal management component for regulating the temperature of the individual battery cells within the housing. The thermal management component includes a flow guide pipe for injecting or draining fluid from inside the thermal management component. The battery device also includes a fixing member through which the flow guide pipe passes and is fixed, and the fixing member is fixed to the beam. The fixing member ensures relative fixation between the flow guide pipe and the beam of the housing, improving the stability of the flow guide pipe during battery device use, reducing the risk of the flow guide pipe loosening, and consequently reducing the risk of fluid leakage inside the thermal management component, thereby improving the reliability and stability of the battery device.

[0071] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery devices.

[0072] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0073] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0074] For example, such as Figure 1 The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 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 motor 40, a controller 30, and a battery device 10 can be installed inside vehicle 1. The controller 30 controls the battery device 10 to supply power to the motor 40. For example, the battery device 10 can be installed at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1. For example, the battery device 10 can serve as the operating power source for vehicle 1, for example, to meet the electrical system requirements of vehicle 1, such as for starting, navigation, and operation. In another embodiment of this application, the battery device 10 can not only serve as the operating power source for vehicle 1, but also as the driving power source for vehicle 1, replacing or partially replacing gasoline or natural gas to provide driving power for vehicle 1.

[0075] To meet diverse power demands, a battery device can comprise multiple individual battery cells, which can be connected in series, parallel, or a combination of both. A battery device can also be called a battery pack. For example, multiple individual battery cells can first be connected in series, parallel, or a combination of both to form a battery module, and then multiple battery modules can be connected in series, parallel, or a combination of both to form a battery device. In other words, multiple individual battery cells can be directly assembled into a battery device, or they can first be assembled into battery modules, and then the battery modules can be assembled into a battery device.

[0076] Figure 2 A schematic diagram of the structure of the battery device 10 according to an embodiment of this application is shown; Figure 3 A partial structural schematic diagram of the battery device 10 according to an embodiment of this application is shown, for example, Figure 3 It can be Figure 2 Enlarged schematic diagram of region A in the middle; Figure 4 An exploded view of a partial structure of the battery device 10 according to an embodiment of this application is shown, for example, Figure 4 It can be Figure 2 An exploded view of a portion of the structure of the battery device 10 shown;

[0077] Figure 5 An exploded view of a partial structure of the battery device 10 according to an embodiment of this application is shown, for example, Figure 5 It can be Figure 4 An enlarged view of region B of the battery device 10 shown; Figure 6 A partial structural schematic diagram of the battery device 10 according to an embodiment of this application is shown, for example, Figure 6 As shown Figure 2 The battery device 10 shown has a possible internal partial structure of its housing 11 in region A; Figure 7A partial structural schematic diagram of the battery device 10 according to an embodiment of this application is shown, for example, Figure 7 It can be Figure 6 An enlarged schematic diagram of region C shown.

[0078] In this embodiment, the battery device 10 includes: a housing 11, a thermal management component 12, and a fixing member 13. Specifically, as shown... Figures 2 to 7 As shown, the housing 11 is used to accommodate the battery cell 20, and a beam 113 is provided inside the housing 11; a thermal management component 12 is disposed in the housing 11 and is used to regulate the temperature of the battery cell 20. The thermal management component 12 includes a guide pipe 121, which is used to inject or drain fluid inside the thermal management component 12; the guide pipe 121 passes through the fixing member 13 and is fixed to the fixing member 13, and the fixing member 13 is fixed to the beam 113.

[0079] It should be understood that the housing 11 in this embodiment has a hollow structure to accommodate multiple battery cells 20 within it. The shape of the housing 11 can be customized according to the specific application. For example, this embodiment mainly uses a roughly rectangular box 11 as an example for description, but it is not limited to this. Furthermore, for ease of description, three mutually perpendicular directions are defined based on the housing 11: the length direction X, the width direction Y, and the height direction Z of the battery device 10.

[0080] The housing 11 is provided with at least one beam 113 to divide the internal space of the housing 11 into multiple sub-spaces, each sub-space being used to accommodate at least one battery cell 20. For example, when the housing 11 is provided with multiple beams 113, the extension directions of the multiple beams 113 can be the same or different, so as to make reasonable use of the internal space of the housing 11 and improve the utilization rate of the internal space of the housing 11.

[0081] The thermal management component 12 of this application embodiment is disposed in the housing 11. For example, the thermal management component 12 may be located inside the housing 11, or the thermal management component 12 may be any wall of the housing 11 to simplify the structure of the housing 11. This application embodiment is not limited to this.

[0082] The thermal management component 12 in this embodiment is used to regulate the temperature of the battery cell 20. Specifically, the thermal management component 12 can be used to contain a thermal management medium to regulate the temperature of the battery cell 20. When cooling the battery cell 20, the thermal management component 12 can contain a cooling medium to lower the temperature of the battery cell 20. In this case, the thermal management component 12 can also be referred to as a cooling component, a cooling system, or a cooling plate, etc. In addition, the thermal management component 12 can also be used to heat the battery cell 20, for example, to heat the battery cell 20 in a cold working environment. This embodiment is not limited to this.

[0083] The thermal management component 12 of this embodiment includes a flow guide pipe 121 for injecting or draining fluid inside the thermal management component 12. Further, the thermal management component 12 may also include a flow channel structure, which is a channel for the flow of a thermal management medium. The flow channel structure can be a flow pipe or a plate-like structure with a flow channel. The thermal management component 12 may include one or more flow guide pipes 121. For example, if the thermal management component 12 includes multiple flow guide pipes 121, at least one of these flow guide pipes 121 may be an inlet connector for injecting thermal management medium into the interior of the thermal management component 12, for example, for injecting thermal management medium into the flow channel structure. At least one of the multiple flow guide pipes 121 may also be an outlet connector for draining the thermal management medium inside the thermal management component 12, for example, for draining the thermal management medium from the flow channel structure. In this way, multiple guide tubes 121 cooperate with each other so that the heat management medium inside the heat management component 12 can circulate, thereby achieving a better temperature regulation effect.

[0084] In this embodiment, the flow guide 121 passes through and is fixed to the fixing member 13. If the thermal management component 12 includes multiple flow guides 121, these multiple flow guides 121 can be fixed to one or more fixing members 13. For example, Figures 2 to 7 As shown, taking the thermal management component 12 as an example, which includes two guide tubes 121, these two guide tubes 121 can pass through and be fixed to the same fixing member 13. Alternatively, unlike... Figures 2 to 7 The different guide tubes 121 included in the thermal management component 12 can also be fixed by different fasteners 13. For example, if the distance between the installation positions of the multiple guide tubes 121 of the thermal management component 12 is far, multiple fasteners 13 can be installed for fixing to facilitate installation.

[0085] The fastener 13 in this embodiment can be used to fix the guide pipe 121. At the same time, the fastener 13 is fixed to the beam 113. That is, the fastener 13 can achieve relative fixation between the guide pipe 121 and the beam 113 of the housing 11, which improves the stability of the guide pipe 121 during the use of the battery device 10, reduces the risk of the guide pipe 121 becoming loose, and thus reduces the risk of fluid leakage inside the thermal management component 12, thereby improving the reliability and stability of the battery device 10.

[0086] It should be understood that the specific structure of the fastener 13 in this application embodiment can be set according to actual application. For example, the fastener 13 in this application embodiment is a die-cast structure, which is not only easy to process, but also can improve the structural strength of the fastener 13, thereby improving the stability of the guide tube 121. For example, the material of the fastener 13 can be cast aluminum alloy, but this application embodiment is not limited to this.

[0087] In some embodiments, the guide pipe 121 penetrates the fixing member 13 along the thickness direction Z. A stepped structure 134 is provided on one side of the fixing member 13 perpendicular to the thickness direction Z. That is, at least one side of the fixing member 13 perpendicular to the thickness direction Z is not flat. This stepped structure 134 reduces deformation of the fixing member 13, increases its structural strength and stability, and thus improves the stability of the guide pipe 121. In this embodiment, the thickness direction of the fixing member 13 is described as the height direction Z of the housing 11, but this embodiment is not limited to this.

[0088] In some embodiments, the position of the step structure 134 can be set according to the actual application. Specifically, such as Figures 2 to 7 As shown, the fastener 13 has upper and lower sides perpendicular to the thickness direction Z of the fastener 13. The stepped structure 134 can be located on at least one of these two sides, meaning that at least one side of the fastener 13 perpendicular to the thickness direction Z of the fastener 13 is not flat due to the presence of the stepped structure 134. For example, the stepped structure 134 can be located on the side of the fastener 13 away from the beam 113, i.e., the stepped structure 134 can be located on the upper side of the fastener 13 to facilitate installation and fixation. As another example, the stepped structure 134 can be located on the edge of the fastener 13 to facilitate fixation between the fastener 13 and the beam 113, and between the fastener 13 and the guide pipe 121.

[0089] Figure 8 and Figure 9 The following are schematic diagrams showing the structure of the fastener 13 at different angles according to embodiments of this application. Figure 8 and Figure 9 The fasteners 13 shown are the same fastener 13 at different angles, and the fastener 13 can be as follows: Figures 6 to 7 The battery device 10 shown includes a fixing member 13.

[0090] It should be understood that the guide tube 121 in this embodiment of the application passes through the fixing member 13. For example, as Figure 8 and Figure 9As shown, the fixing member 13 is provided with a through hole 137, and the guide tube 121 passes through the fixing member 13 through the through hole 137 to facilitate installation and fixing of the fixing member. For example, in this embodiment of the application, the fixing member 13 includes a through hole 137 extending along the thickness direction Z of the fixing member 13, then the guide tube 121 passes through the fixing member 13 along the thickness direction Z of the fixing member 13.

[0091] In some embodiments, the guide tube 121 can be riveted to the fixing member 13 by means of a riveting block 1211, so as to fix the guide tube 121 along the thickness direction Z of the fixing member 13. In addition, the riveting block 1211 and the fixing member 13 can be fixed by fasteners such as bolts, so as to prevent the riveting block 1211 from rotating in the through hole 137, thereby preventing the guide tube 121 from rotating in the through hole 137.

[0092] In some embodiments, the number of through holes 137 provided on the fastener 13 can be set according to the actual application. For example, Figure 4 and Figure 5 As shown, the fastener 13 can have only one through hole 137, allowing all the guide tubes 121 of the thermal management component 12 to pass through the through hole 137, thus simplifying the structure and facilitating manufacturing. For example, the thermal management component 12 may include one or more guide tubes 121 that pass through the same through hole 137. As another example... Figure 8 and Figure 9 As shown, the fastener 13 may be provided with multiple through holes 137, which correspond one-to-one with the multiple guide tubes 121 included in the thermal management component 12. That is, different guide tubes 121 included in the thermal management component 12 pass through different through holes 137 to improve structural stability, but the embodiments of this application are not limited thereto.

[0093] In some embodiments, the size of the through hole 137 can be set according to the actual application. For example, the inner diameter of the through hole 137 can be set according to the size of the guide tube 121 passing through the through hole 137, so as to facilitate fixing the guide tube 121.

[0094] For example, the depth H of the through hole 137 can be set according to the actual application. For example, as Figure 8 and Figure 9As shown, the depth H of the through hole 137 ranges from [2mm, 9mm], or optionally, the depth H of the through hole 137 ranges from [4mm, 9mm]. On the one hand, a depth H of the through hole 137 greater than or equal to 2mm, or further, greater than or equal to 4mm, can improve the structural strength and stability of the fixing member 13, thereby improving the stability of the guide tube 121 and the battery device 10. On the other hand, a depth H of the through hole 137 less than or equal to 9mm can reduce the space occupied by the fixing member 13 and improve the internal space utilization of the battery device 10.

[0095] In some embodiments, the depth H of the through hole 137 can also be set to any of the following values ​​or between any two of the following values: 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, or 9mm.

[0096] It should be understood that the fastener 13 in this embodiment is fixed to the beam 113, and the specific structure and fixing method can be set according to the beam 113.

[0097] In some embodiments, beam 113 includes a first beam 1131 and a second beam 1132 that extend in different directions and intersect. Fixing member 13 is fixed to the first beam 1131 and the second beam 1132 respectively to improve the stability between the fixing member 13 and the beam 113. For example... Figures 2 to 9 As shown, the interior of the housing 11 may be provided with multiple beams 113 to divide the interior space of the housing 11 into multiple subspaces. These multiple subspaces can be used to accommodate battery cells 20, as well as other components, such as control components and detection components in the battery device 10.

[0098] like Figures 2 to 9 As shown, the beams 113 inside the box 11 include a first beam 1131 and a second beam 1132 that extend in different directions and intersect. The fastener 13 is fixed to both the first beam 1131 and the second beam 1132. For example, the fastener 13 can be set near the area where the first beam 1131 and the second beam 1132 intersect to facilitate installation.

[0099] It should be understood that the first beam 1131 and the second beam 1132 in this embodiment can be any two intersecting beams inside the housing 11 of the battery device 10. For example, the first beam 1131 and the second beam 1132 can be two beams inside the housing 11 close to the Battery Management System (BMS), so that the fixing member 13 is located in the area close to the BMS. As another example, the housing 11 may include an area for centrally arranging multiple battery cells 20, and the first beam 1131 and the second beam 1132 can also be beams close to this area, or they can also be beams used to form this area, so that the fixing member 13 is close to the area where multiple battery cells 20 are located. Considering the problem of the thermal management component 12 adjusting the battery cells 20, the fixing member 13 for fixing the guide tube 121 is arranged close to the multiple battery cells 20. For example, the fixing member 13 can be located at the edge of the area where multiple battery cells 20 are located, which can facilitate the assembly of the battery device 10.

[0100] In some embodiments, the fastener 13 includes a first fixing part 131 and a second fixing part 132. The first fixing part 131 is fixed to the first beam 1131 through a first connector 141, and the first connector 141 passes through the first fixing part 131 and is fixed to the first beam 1131. The second fixing part 132 is fixed to the second beam 1132 through a second connector 142, and the second connector 142 passes through the second fixing part 132 and is fixed to the second beam 1132. The structure is simple and stable, and easy to install.

[0101] In some embodiments, the first connector 141 and the second connector 142 can be configured according to the actual application. For example, the first connector 141 and / or the second connector 142 may include bolts, screws, or rivets. As another example, the first connector 141 and the second connector 142 may use the same or different components, for example, such as... Figures 2 to 9 As shown, both the first connector 141 and the second connector 142 can be bolts, which facilitates installation and disassembly and improves the connection stability between the fixing member 13 and the first beam 1131 and the second beam 1132.

[0102] It should be understood that the number of the first connector 141 and the second connector 142 in the embodiments of this application can be set according to actual applications. For example, as Figures 2 to 9As shown, one or more first connecting members 141 can be provided between the first fixing part 131 and the first beam 1131, and one or more second connecting members 142 can be provided between the second fixing part 132 and the second beam 1132. Furthermore, the number of first connecting members 141 can be the same as or different from the number of second connecting members 142. For example, two first connecting members 141 can be provided between the first fixing part 131 and the first beam 1131 to improve the connection strength and stability between the first fixing part 131 and the first beam 1131.

[0103] In some embodiments, the first fixing part 131 and / or the second fixing part 132 are provided with reinforcing ribs 1311 to strengthen the structural strength of the fixing member 13 and increase the connection stability between the fixing member 13 and the first beam 1131 and between the fixing member 13 and the second beam 1132. For example, Figures 2 to 9 As shown, taking the first fixing part 131 provided with a reinforcing rib 1311 as an example, the position and number of the reinforcing rib 1311 can be set according to the position of the first fixing part 131.

[0104] In some embodiments, such as Figures 2 to 9 As shown, the first fixing part 131 of the fastener 13 can be provided with multiple reinforcing ribs 1311 to improve the structural strength and stability between the first fixing part 131 and the first beam 1131. For example, reinforcing ribs 1311 can be provided on both opposite sides of the first fixing part 131 to make the force on the first fixing part 131 more uniform and effectively improve the structural strength of the first fixing part 131.

[0105] In this embodiment of the application, the heights of different regions of the first beam 1131 may be the same or partially the same. For example, as Figures 2 to 9 As shown, the first beam 1131 can be a stepped structure. Specifically, the height of the local area of ​​the first beam 1131 covered by the fixing member 13 is usually higher to increase the height of the fixing member 13, facilitating the fixing member 13 to be fixed to other components, such as the wall above the housing 11. The height of the area of ​​the first beam 1131 away from the fixing member 13 is lower to avoid other components within the battery device 10. For example, the guide pipe 121 of the thermal management component 12 is usually located in the area near the edge inside the battery device 10. This area may also be provided with other components, such as the connector of the busbar component 15 for electrical connection between multiple battery cells 20, and management components within the battery device 10 for controlling or monitoring the battery cells 20. The lower height of the first beam 1131 can avoid these components for easier installation.

[0106] In some embodiments, the first fixing part 131 may be located in the region of the stepped structure near the first beam 1131. For example, as Figures 2 to 9 As shown, the first fixing part 131 extends along the thickness direction Z of the fastener 13 to be connected and fixed to the first beam 1131. The first fixing part 131 is provided with reinforcing ribs 1311 to improve the structural strength of the first fixing part 131.

[0107] It should be understood that the fastener 13 in this embodiment can also be fixed to other parts of the housing 11.

[0108] In this embodiment, the housing 11 includes: a first housing portion 111, which is a hollow structure with an opening, a beam 113 located inside the first housing portion 111, and a thermal management component 12 disposed therein; and a second housing portion 112 for covering the opening, with a fastener 13 fixed to the second housing portion 112. The fastener 13 can fix the guide pipe 121 to the beam 113 inside the first housing portion 111 of the housing 11, and can also fix the guide pipe 121 to the second housing portion 112 of the housing 11, further improving the stability of the guide pipe 121, reducing the risk of the guide pipe 121 becoming loose, and thus reducing the risk of fluid leakage inside the thermal management component 12, thereby improving the reliability and stability of the battery device 10.

[0109] In some embodiments, the second housing portion 112 includes an opening region 1121 through which a guide tube 121 extends to expose the guide tube 121. For example... Figures 2 to 9 As shown, the fastener 13 is fixed to the guide pipe 121 and also to the beam 113. When the second housing portion 112 covers the opening of the first housing portion 111, the guide pipe 121 can be exposed through the opening area 1121 of the second housing portion 112, allowing the guide pipe 121 to extend to the outside of the housing 11, facilitating the injection or extraction of fluid into or out of the thermal management component 12 through the guide pipe 121. Furthermore, taking the guide pipe 121 being fixed to the fastener 13 via the rivet block 1211 as an example, the opening area 1121 of the second housing portion 112 can expose the guide pipe 121, and further, the rivet block 1211 can also be exposed, thereby reducing the space occupied by the rivet block 1211 inside the housing 11.

[0110] In some embodiments, the fastener 13 is fixed to the first wall 1122 of the second housing portion 112, and the first wall 1122 is perpendicular to the height direction Z of the housing 11. It should be understood that the structure of the second housing portion 112 in this embodiment can be configured according to actual application. The first wall 1122 is perpendicular to the height direction Z of the housing 11 and is typically a wall with a larger area than the housing 11. This facilitates installation and improves structural stability compared to fixing the fastener 13 to other walls of the housing 11, such as smaller side walls.

[0111] For example, such as Figures 2 to 9As shown, the second box portion 112 can be a groove structure, in which case the first wall 1122 can be the bottom wall of the groove structure of the second box portion 112. The bottom wall of the second box portion 112 is perpendicular to the height direction Z of the box 11, that is, the fastener 13 is fixed to the bottom wall of the second box portion 112. Alternatively, the second box portion 112 can also be a plate structure, in which case the second box portion 112 is perpendicular to the height direction Z of the box 11, and the fastener 13 is fixed to the second box portion 112. Furthermore, the second box portion 112 can also be a structure of other shapes, in which case the first wall 1122 is the wall of the second box portion 112 perpendicular to the height direction Z of the box 11.

[0112] In this embodiment, the fixing member 13 includes a third fixing part 133, which is fixed to the second housing part 112 via a third connecting member 143. The third connecting member 143 penetrates the second housing part 112 and is fixed to the third fixing part 133. The structure is simple and easy to implement, and the connection strength and stability between the fixing member 13 and the second housing part 112 can be improved by the third connecting member 143. For example, the third fixing part 133 can be disposed around the opening area 1121 for easy installation.

[0113] In some embodiments, a protruding structure 1331 is provided on the side of the third fixing part 133 away from the second housing part 112. The protruding structure 1331 protrudes in a direction away from the second housing part 112 to increase the thickness of the third fixing part 133, improve the structural strength, and enhance the connection strength and stability between the fixing member 13 and the second housing part 112. For example, the position of the protruding structure 1331 can correspond to the position of the third connector 143 to facilitate the fixing of the third connector 143.

[0114] In some embodiments, the third connector 143 may be configured according to the specific application. For example, the third connector 143 may include a bolt, screw, or rivet. As another example... Figures 2 to 9 As shown, the third connector 143 can be a bolt, which facilitates installation and disassembly and improves the connection stability between the fastener 13 and the second housing part 112.

[0115] It should be understood that the number of third connectors 143 in this application embodiment can be set according to actual application. For example, as Figures 2 to 9 As shown, the third fixing part 133 and the second housing part 112 can be fixedly connected by a plurality of third connectors 143. The plurality of third connectors 143 are arranged around the opening area 1121 to improve the structural stability between the fixing part 133 and the second housing part 112.

[0116] In some embodiments, a sealing member 135 is provided between the fixing member 13 and the second housing portion 112 to improve the sealing performance between the fixing member 13 and the second housing portion 112. For example, the sealing member 135 may be provided around the opening area 1121 to improve the sealing performance of the housing 11.

[0117] In some embodiments, the fixing member 13 is provided with a groove 136 with an opening facing the second housing portion 112. The groove 136 is used to accommodate the sealing member 135, so as to facilitate the positioning and installation of the sealing member 135, and can also reduce the space occupied by the sealing member 135 inside the housing 11, thereby improving the space utilization rate of the housing 11. For example, as Figures 2 to 9 As shown, the groove 136 can be provided around the third fixing part 133 to improve the sealing between the fixing member 13 and the second housing part 112, thereby improving the sealing of the housing 11.

[0118] It should be understood that the specific structure of the first housing portion 111 and the second housing portion 112 of the housing 11 in the embodiments of this application can be set according to actual applications.

[0119] Figure 10 An exploded structural diagram of the housing 11 according to an embodiment of this application is shown; Figure 11 This illustration shows a possible cross-sectional schematic diagram of a battery device 10 according to an embodiment of this application. For example, the... Figure 11 Such as Figure 10 Box 11 shown; Figure 12 This illustration shows another possible cross-sectional view of the battery device 10 according to an embodiment of this application. For example, the... Figure 12 Such as Figure 10 Box 11 shown; Figure 11 and Figure 12 The cross-section shown can be a cross-section perpendicular to the length direction X of the battery device 10.

[0120] In this embodiment, the shapes of the first housing portion 111 and the second housing portion 112 can be determined according to the shape of the components housed inside, for example, according to the shape of a combination of multiple battery cells 20 housed inside. At least one of the first housing portion 111 and the second housing portion 112 has an opening. For example, as Figures 10 to 12 As shown, the first housing portion 111 and the second housing portion 112 can both be hollow cuboids with one open side each. The openings of the first housing portion 111 and the second housing portion 112 are opposite to each other, and the first housing portion 111 and the second housing portion 112 are interlocked to form a housing 11 with a closed chamber, which can be used to accommodate multiple battery cells 20. The multiple battery cells 20 are connected in parallel, series, or mixed and placed inside the housing 11 formed by the interlocking of the first housing portion 111 and the second housing portion 112.

[0121] For example, unlike Figures 10 to 12 As shown, the first housing portion 111 and the second housing portion 112 may each have only one hollow cuboid with an opening, while the other is plate-shaped to cover the opening. For example, if the first housing portion 111 is a hollow cuboid with one opening, and the second housing portion 112 can be plate-shaped, then the second housing portion 112 covers the opening of the first housing portion 111 to form a housing 11 with a closed chamber, which can be used to accommodate multiple battery cells 20.

[0122] In some embodiments, the battery device 10 may further include other components. For example, the battery device 10 may further include a busbar component 15, which can be used to realize electrical connections between multiple battery cells 20, such as in parallel, series, or mixed connections. Specifically, the busbar component 15 can realize electrical connections between battery cells 20 by connecting to the electrode terminals 201 of the battery cells 20; or, the busbar component 15 can also realize electrical connections between battery cells 20 by connecting to other components of the battery cells 20. The busbar component 15 can be fixed to corresponding components of the battery cells 20 by welding, for example, by welding to the electrode terminals 201, a sealing structure, or a housing, etc., and the embodiments of this application are not limited thereto.

[0123] It should be understood that the first housing portion 111 of this application embodiment is provided with a thermal management component 12. For example, the thermal management component 12 can be any wall of the first housing portion 111, or the thermal management component 12 can also be located inside the first housing portion 111.

[0124] In some embodiments, such as Figures 10 to 12 As shown, the thermal management component 12 in this embodiment can be located inside the first housing portion 111. For example, the thermal management component 12 can be used to divide the housing 11 into multiple spaces along the height direction Z of the battery device 10, at least a portion of which is used to accommodate the battery cell 20.

[0125] In some embodiments, the housing 11 may include an electrical cavity 11a, a collection cavity 11b, and a thermal management component 12. The thermal management component 12 is used to isolate the electrical cavity 11a and the collection cavity 11b. "Isolation" here refers to separation, which may be sealed or unsealed. The electrical cavity 11a is used to accommodate a plurality of battery cells 20, and further, the electrical cavity 11a may also be used to accommodate a busbar component 15 to enable electrical connection between the plurality of battery cells 20. The electrical cavity 11a provides accommodating space for the battery cells 20 and the busbar component 15, and the shape of the electrical cavity 11a may be determined according to the plurality of battery cells 20 and the busbar component 15. At least one of the plurality of battery cells 20 may include a pressure relief mechanism, for example, the pressure relief mechanism may be disposed on the wall of the battery cell 20 facing the thermal management component 12. The pressure relief mechanism is used to actuate to release internal pressure or temperature when the internal pressure or temperature of the battery cell 20 with the pressure relief mechanism reaches a threshold. The collection cavity 11b is used to collect emissions from the battery cell 20 with the pressure relief mechanism when the pressure relief mechanism is actuated.

[0126] A thermal management component 12 is used to isolate the electrical cavity 11a and the collection cavity 11b. That is, the electrical cavity 11a, which houses multiple battery cells 20 and the busbar 15, is separately located from the collection cavity 11b, which collects the emissions. Thus, when the pressure relief mechanism is actuated, the emissions from the battery cells 20 enter the collection cavity 11b, but do not enter or only minimally enter the electrical cavity 11a, thereby reducing the impact on the electrical connections in the electrical cavity 11a and enhancing the safety of the battery device 10.

[0127] It should be understood that the first housing portion 111 can be as follows: Figure 11 The integrated structure shown, or, as Figure 12 As shown, the first housing portion 111 may also include multiple components. For example, the first housing portion 111 may include a side wall structure with openings at both ends and a protective member 1111. The protective member 1111 can be used to cover one opening of the side wall structure with openings at both ends, and the second housing portion 112 is used to cover the other opening. The protective member 1111 can be used to protect the thermal management component 12 and reduce damage to the thermal management component 12 from the external environment.

[0128] Figure 13 An exploded structural diagram of the housing 11 according to another embodiment of this application is shown; Figure 14 This illustration shows another possible cross-sectional view of the battery device 10 according to an embodiment of this application. For example, the... Figure 14 Such as Figure 13 Box 11 shown, Figure 14 The cross-section shown can be a cross-section perpendicular to the length direction X of the battery device 10.

[0129] In some embodiments, such as Figure 13and Figure 14 As shown, the thermal management component 12 can be any one of the walls of the first housing portion 111. Specifically, the first housing portion 111 includes multiple walls, and the thermal management component 12 can be any one of these multiple walls. For example, the thermal management component 12 can be the bottom wall of the first housing portion 111 opposite to the opening, so as to improve the space utilization of the battery device 10.

[0130] According to some embodiments of this application, this application also provides an electrical device including the battery device described in any of the above embodiments, and the battery device is used to provide electrical energy to the electrical device.

[0131] The electrical equipment can be any of the aforementioned devices or systems that utilize battery devices.

[0132] According to some embodiments of this application, see Figures 2 to 9 This application provides a battery device 10, which includes: a housing 11 for accommodating a battery cell 20, wherein a beam 113 is disposed within the housing 11; a thermal management component 12 disposed within the housing 11 for regulating the temperature of the battery cell 20, the thermal management component 12 including a guide pipe 121 for injecting or draining fluid inside the thermal management component 12; and a fixing member 13, wherein the guide pipe 121 passes through and is fixed to the fixing member 13, and the fixing member 13 is fixed to the beam 113. The fixing member 13 is a die-cast structure. The guide pipe 121 passes through the fixing member 13 along its thickness direction, and a stepped structure 134 is provided on one side of the fixing member 13 perpendicular to its thickness direction.

[0133] The beam 113 includes a first beam 1131 and a second beam 1132 that extend in different directions and intersect. The fastener 13 is fixed to the first beam 1131 and the second beam 1132 respectively. The first fixing part 131 and / or the second fixing part 132 are provided with reinforcing ribs 1311.

[0134] The housing 11 includes: a first housing portion 111, which is a hollow structure with an opening, and the beam 113 is located inside the first housing portion 111. The first housing portion 111 is provided with the thermal management component 12. A second housing portion 112 is used to cover the opening, and the fastener 13 is fixed to the second housing portion 112. The second housing portion 112 includes an opening area 1121, through which the guide pipe 121 is exposed. A sealing member 135 is provided between the fastener 13 and the second housing portion 112. The fastener 13 is provided with a groove 136 with its opening facing the second housing portion 112, and the groove 136 is used to accommodate the sealing member 135.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: A housing (11) is provided for accommodating individual battery cells (20), and a beam (113) is provided inside the housing (11); A thermal management component (12) is disposed in the housing (11) for regulating the temperature of the battery cell (20). The thermal management component (12) includes a flow guide (121) for injecting or draining fluid inside the thermal management component (12). The fixing member (13) is through which the guide pipe (121) passes and is fixed to the fixing member (13), and the fixing member (13) is fixed to the beam (113).

2. The battery device according to claim 1, characterized in that, The guide tube (121) penetrates the fixing member (13) along the thickness direction of the fixing member (13), and a stepped structure (134) is provided on one side of the fixing member (13) perpendicular to the thickness direction of the fixing member (13).

3. The battery device according to claim 1 or 2, characterized in that, The beam (113) includes a first beam (1131) and a second beam (1132) that extend in different directions and intersect each other, and the fastener (13) is fixed to the first beam (1131) and the second beam (1132) respectively.

4. The battery device according to claim 3, characterized in that, The fastener (13) includes a first fastening part (131) and a second fastening part (132). The first fixing part (131) is fixed to the first beam (1131) by the first connector (141), and the first connector (141) passes through the first fixing part (131) and is fixed to the first beam (1131); The second fixing part (132) is fixed to the second beam (1132) by the second connector (142), and the second connector (142) passes through the second fixing part (132) and is fixed to the second beam (1132).

5. The battery device according to claim 4, characterized in that, The first fixing part (131) and / or the second fixing part (132) are provided with reinforcing ribs (1311).

6. The battery device according to any one of claims 1 to 5, characterized in that, The housing (11) includes: The first box section (111) is a hollow structure with an opening. The beam (113) is located inside the first box section (111). The first box section (111) is provided with the thermal management component (12). The second housing part (112) is used to cover the opening, and the fastener (13) is fixed to the second housing part (112).

7. The battery device according to claim 6, characterized in that, The second housing portion (112) includes an opening area (1121), through which the guide tube (121) passes to expose the guide tube (121).

8. The battery device according to claim 6 or 7, characterized in that, The fastener (13) is fixed to the first wall (1122) of the second housing part (112), and the first wall (1122) is perpendicular to the height direction of the housing (11).

9. The battery device according to any one of claims 6 to 8, characterized in that, A sealing element (135) is provided between the fixing member (13) and the second housing part (112).

10. The battery device according to claim 9, characterized in that, The fastener (13) is provided with a groove (136) with an opening facing the second housing part (112), the groove (136) being used to accommodate the seal (135).

11. The battery device according to any one of claims 6 to 10, characterized in that, The fastener (13) includes a third fixing part (133), which is fixed to the second housing part (112) by a third connector (143). The third connector (143) passes through the second housing part (112) and is fixed to the third fixing part (133).

12. The battery device according to claim 11, characterized in that, The third fixing part (133) has a protruding structure (1331) on the side away from the second housing part (112), and the protruding structure (1331) protrudes in a direction away from the second housing part (112).

13. The battery device according to any one of claims 1 to 12, characterized in that, The fastener (13) is a die-cast structure.

14. The battery device according to any one of claims 1 to 13, characterized in that, The fixing member (13) is provided with a through hole (137), and the guide tube (121) passes through the fixing member (13) through the through hole (137). The depth of the through hole (137) is in the range of [2mm, 9mm], and optionally, the depth of the through hole (137) is in the range of [4mm, 9mm].

15. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 14, the battery device being used to supply power to the electrical device.

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