Battery device, energy storage device and power utilization device

Abstract

The invention is suitable for the technical field of batteries, and provides a battery device, an energy storage device and a power utilization device. The battery monomers are accommodated in the box body; the electric control assembly is contained in the box body, the electric control assembly comprises a support and an electric control part, the support comprises a support body, the side, facing the battery single bodies, of the support body is connected with a protruding structure, and the electric control part is arranged on the side, away from the battery single bodies, of the support body; the electric control assembly further comprises a heat insulation plate arranged on the side, facing the battery single bodies, of the support body. The heat insulation plate, the support body and the protruding structure define a cavity. According to the battery device provided by the embodiment of the invention, the convex structure is arranged on one side, facing the battery monomers, of the bracket main body, and the cavity is defined by the heat insulation plate, the convex structure and the bracket main body, so that heat transfer is hindered and a heat insulation effect is achieved through the combined action of the cavity and the heat insulation plate; therefore, the negative influence of high temperature generated by the single battery on the electric control assembly is reduced.

Description

Technical Field

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

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

[0003] Due to limited space within battery packs, the electronic control components or other electronic control assemblies are typically located close to the individual battery cells. During charging and discharging, especially in cases of thermal runaway, individual battery cells are prone to generating high temperatures, which can easily damage the electronic control components or other electronic control assemblies. Summary of the Invention

[0004] In view of the above problems, this application provides a battery device, an energy storage device, and an electrical device that can alleviate the problem that the high temperature generated by the battery cell can easily damage the electronic control components.

[0005] In a first aspect, embodiments of this application provide a battery device, comprising: a housing; a battery cell housed within the housing; and an electronic control assembly housed within the housing. The electronic control assembly includes a support and electronic control components. The support includes a support body, a protruding structure connected to the side of the support body facing the battery cell, and the electronic control components disposed on the side of the support body away from the battery cell. The electronic control assembly further includes a heat insulation plate disposed on the side of the support body facing the battery cell, and the heat insulation plate, the support body, and the protruding structure form a cavity.

[0006] In the technical solution of this embodiment, a protruding structure is provided on the side of the bracket body facing the battery cell, and a cavity is formed by the heat insulation plate, the protruding structure and the bracket body. The cavity and the heat insulation plate work together to hinder the transfer of heat and achieve the effect of heat insulation, thereby reducing the negative impact of the high temperature generated by the battery cell on the electronic control components.

[0007] In some embodiments, the protruding structure includes a first reinforcing rib connected to the support body.

[0008] In the technical solution of this embodiment, the protruding structure includes a first reinforcing rib. The first reinforcing rib can not only cooperate with the heat insulation plate and the main body of the bracket to form a cavity to hinder the transfer of heat, but also improve the strength of the bracket.

[0009] In some embodiments, the protruding structure further includes a second reinforcing rib connected to the support body, the second reinforcing rib intersecting with the first reinforcing rib.

[0010] In the technical solution of this embodiment, the protruding structure further includes a second reinforcing rib, and the second reinforcing rib intersects with the first reinforcing rib, so that the first reinforcing rib and the second reinforcing rib can form multiple cavities to better hinder the transfer of heat and improve the heat insulation effect; at the same time, the arrangement of the first reinforcing rib and the second reinforcing rib can also better improve the strength of the support.

[0011] In some embodiments, the number of first reinforcing ribs is at least two, and each first reinforcing rib is arranged at intervals along a first direction; the number of second reinforcing ribs is at least two, and each second reinforcing rib is arranged at intervals along a second direction, the second direction being at an angle to the first direction.

[0012] The technical solution of this embodiment provides a arrangement of some first reinforcing ribs and second reinforcing ribs. This arrangement can form multiple cavities on the side of the bracket body facing the battery cell to better improve the heat insulation effect. At the same time, this arrangement can also further improve the strength of the bracket.

[0013] In some embodiments, the first reinforcing rib and / or the second reinforcing rib can divide the cavity into at least two sub-cavities; the first reinforcing rib and / or the second reinforcing rib are provided with through holes to connect the sub-cavities on both sides of the through holes, and to connect any cavity to the space outside the electronic control assembly.

[0014] In the technical solution of this embodiment, through holes are provided on the first reinforcing rib and / or the second reinforcing rib so that each cavity can be interconnected, so that the gas in the cavity can exchange with the gas outside the cavity, and can carry away heat in the process of gas exchange, thereby improving the heat insulation effect of the bracket.

[0015] In some embodiments, the ratio of the size of the corresponding through hole to the size of the adjacent cavity in the length direction of the first or second reinforcing rib is in the range of 0.25 to 0.4.

[0016] The technical solution of this embodiment provides a range of through-hole sizes so that the through-holes can both allow gas to flow through, so that the flowing gas can carry away heat and achieve cooling, and reduce the negative impact of the through-holes on the strength of the first reinforcing rib and / or the second reinforcing rib.

[0017] In some embodiments, the electronic control assembly further includes a connection structure disposed between the heat insulation plate and the support body, and the heat insulation plate is connected to the connection structure; the heat insulation plate is connected to at least a partially protruding structure, and / or the heat insulation plate is spaced apart from at least a partially protruding structure.

[0018] In the technical solution of this embodiment, a connection structure is provided so that the heat insulation board is connected to the support body through the connection structure, so that the heat insulation board can be connected to the support body better and more stably.

[0019] In some embodiments, the area of ​​the connecting structure connected to the insulation board is greater than the area of ​​the protruding structure on the side facing the insulation board.

[0020] In the technical solution of this embodiment, the area of ​​the connecting structure connected to the heat insulation board is larger than the area of ​​the protruding structure facing the heat insulation board. Compared with directly connecting the heat insulation board to the protruding structure, this setting can increase the connection area of ​​the heat insulation board, thereby improving the connection stability between the heat insulation board and the support body.

[0021] In some embodiments, in the arrangement direction of the support body and the heat insulation plate, the size of the connecting structure is larger than the size of the protruding structure.

[0022] The technical solution of this embodiment provides some dimensional relationships between the connecting structure and the protruding structure, so that the heat insulation board can be spaced apart from the protruding structure when it is connected to the connecting structure, thereby reducing the interference of the protruding structure on the connection of the heat insulation board to the connecting structure, and enabling the heat insulation board to be connected to the connecting structure more stably.

[0023] In some embodiments, the connection structure includes a base connected to the support body; the connection structure also includes an adhesive layer, one side of which is connected to the base and the other side of which is connected to the insulation board.

[0024] In the technical solution of this embodiment, the connecting structure includes a base and an adhesive layer to reduce the thickness of the adhesive layer. This reduces the amount of adhesive used, thereby enabling the heat insulation board to be fixed to the main body of the bracket more stably, while also reducing costs.

[0025] In some embodiments, in the arrangement direction of the support body and the heat insulation plate, the size of the base is less than or equal to the size of the protruding structure.

[0026] The technical solution of this embodiment provides some dimensional relationships between the base and the protruding structure, and thereby limits the size of the adhesive layer. This setting can provide a certain foundation for the adhesive layer by the base, thereby reducing the thickness of the adhesive layer, reducing the amount of adhesive used, and reducing costs. At the same time, this setting can also ensure that the thickness of the adhesive layer is not too small, so that the adhesive layer can fix the heat insulation board more stably.

[0027] In some embodiments, the difference between the size of the base and the size of the protruding structure in the arrangement direction of the support body and the heat insulation plate ranges from 1 mm to 2 mm.

[0028] The technical solution of this embodiment further provides some dimensional relationships between the base and the protruding structure, and makes the thickness of the adhesive layer moderate, so that the adhesive layer can not only fix the heat insulation board more stably, but also reduce the cost of the adhesive layer.

[0029] In some embodiments, the connection structure includes an adhesive layer, one side of which is connected to the support body and the other side of which is connected to the heat insulation plate.

[0030] In the technical solution of this embodiment, the connecting structure includes an adhesive layer to fix the heat insulation board to the bracket body through the adhesive layer.

[0031] In some embodiments, the size of the adhesive layer ranges from 1.2 mm to 2.2 mm in the arrangement direction of the support body and the heat insulation board.

[0032] The technical solution of this embodiment provides a range of adhesive layer sizes so that the adhesive layer can not only fix the heat insulation board to the bracket body relatively stably, but also reduce the cost of the adhesive layer.

[0033] In some embodiments, in the arrangement direction of the support body and the heat insulation plate, the difference between the size of the connecting structure and the size of the protruding structure is less than or equal to 0.2 mm.

[0034] The technical solution of this embodiment provides a dimensional relationship between the connecting structure and the protruding structure, such that the size of the connecting structure is larger than the size of the protruding structure, so that the heat insulation board can be spaced apart from the protruding structure and does not contact the protruding structure, thereby reducing the negative impact of the protruding structure on the connection stability of the heat insulation board.

[0035] In some embodiments, the number of connection structures is at least two.

[0036] In this embodiment, the number of connecting structures is at least two, so as to better fix the heat insulation board to the support body.

[0037] In some embodiments, the connection structure is located at the edge of the support body.

[0038] In the technical solution of this embodiment, the connecting structure is located at the edge of the support body to reduce the occurrence of heat insulation board warping, thereby further improving the connection stability of the heat insulation board.

[0039] In some embodiments, the size of the heat insulation plate ranges from 0.5 mm to 1 mm in the arrangement direction of the support body and the heat insulation plate.

[0040] The technical solution of this embodiment provides a range of sizes for the heat insulation panels, so that the heat insulation panels can not only fit the cavity to better hinder the transfer of heat, but also reduce the space occupied by the heat insulation panels.

[0041] In some embodiments, the electronic control assembly further includes a thermally conductive structure connected to the heat insulation plate, at least a portion of which is housed within a cavity.

[0042] In the technical solution of this embodiment, the electronic control component includes a heat-conducting structure and a heat insulation plate. The heat insulation plate hinders the transfer of heat, and the heat-conducting structure conducts part of the heat on the heat insulation plate to the air in the cavity, so that the air can circulate, carry heat and dissipate heat, thereby enabling the heat insulation plate to play a better role in heat insulation.

[0043] In some embodiments, the thermally conductive structure is connected to the housing.

[0044] In this embodiment, the heat-conducting structure is connected to the housing so that the heat-conducting structure can transfer some of the heat from the insulation board to the housing, thereby better achieving the function of heat dissipation.

[0045] In some embodiments, the material of the support body includes at least one of plastic, resin, and rubber.

[0046] The technical solution of this embodiment provides some specific structures of the support body. Under the premise that the heat insulation plate and the cavity have a good heat insulation effect, this setting can reduce the weight of the support body, so as to reduce the overall weight of the battery device.

[0047] In some embodiments, the electronic control assembly further includes a housing connected to the support body, with the electronic control components located inside the housing; the housing and the support body are integrally injection molded structures.

[0048] In the technical solution of this embodiment, the bracket body and the shell are integrally injection molded, so that the structure can have high stability, reduce problems such as uneven strength that may be caused by secondary processing such as bonding and welding, and reduce the risk of impurities other than electronic control components entering the shell.

[0049] In some embodiments, the electronic control component is located on the side of the battery cell where the pressure relief structure is provided.

[0050] The technical solution of this embodiment provides some installation positions for electronic control components. Under the premise that the heat insulation plate and the cavity have a good heat insulation effect, this setting can reduce the space requirement of the electronic control components for the battery device.

[0051] Secondly, embodiments of this application also provide an energy storage device, including a battery device provided in some embodiments of the first aspect, the battery device being used to store or provide electrical energy.

[0052] Thirdly, embodiments of this application also provide an electrical device, including a battery device provided in some embodiments of the first aspect, or an energy storage device provided in some embodiments of the second aspect, wherein the battery device is used to store or provide electrical energy.

[0053] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0056] Figure 2 This is an exploded view of the battery device provided in some embodiments of this application;

[0057] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application;

[0058] Figure 4 A bottom view schematic diagram of an electronic control component provided in some embodiments of this application;

[0059] Figure 5 This is a perspective view of an electronic control assembly provided in some embodiments of the present application after the electronic control components have been removed;

[0060] Figure 6 This is a top view of an electronic control assembly provided in some embodiments of this application after removing the electronic control components;

[0061] Figure 7 A bottom view of the electronic control assembly after removing the heat insulation plate, provided in some embodiments of this application;

[0062] Figure 8 for Figure 7 A magnified view of a portion of point F in the middle;

[0063] Figure 9 for Figure 6 Cross-sectional view at line AA;

[0064] Figure 10 For some embodiments of this application Figure 9 A magnified view of a portion of point E in the middle;

[0065] Figure 11 For other embodiments of this application Figure 9 A magnified view of a portion of point E in the middle;

[0066] Figure 12 for Figure 6 Cross-sectional view at the middle BB line;

[0067] Figure 13 for Figure 7 Cross-sectional view at the CC line;

[0068] Figure 14 for Figure 7 Schematic diagram of cross section at the DD line.

[0069] The markings in the diagram mean:

[0070] 1000, vehicles;

[0071] 100. Battery device;

[0072] 10. Box; 11. First box; 12. Second box;

[0073] 20. Battery cell; 21. Housing; 22. End cap; 23. Electrode assembly; 24. Electrode terminal; 25. Pressure relief structure;

[0074] 30. Electrical control components; 31. Bracket; 311. Bracket body; 312. Protruding structure; 3121. First reinforcing rib; 3122. Second reinforcing rib; 3123. Through hole; 32. Heat insulation board; 33. Cavity; 331. Sub-cavity; 34. Connecting structure; 341. Base; 342. Adhesive layer;

[0075] 40. Thermally conductive structure;

[0076] 200. Motor;

[0077] 300. Controller. Detailed Implementation

[0078] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0079] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0080] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0081] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0082] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0083] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0084] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0085] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0086] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0087] In addition to individual battery cells, battery devices typically include electronic control components or other electronic control systems to monitor, control, and protect the individual battery cells. For example, battery devices usually include a battery management system, which is mainly used to monitor the status of the battery device.

[0088] Battery cells tend to generate high temperatures during charging and discharging, and these temperatures can rise further in the event of thermal runaway. Furthermore, due to the limited internal space of the battery pack, the distance between the various electronic control components and the battery cells is typically small. Consequently, the temperature of the electronic control components can easily rise during battery cell operation, potentially leading to short circuits and other damage to the circuit boards, terminals, and other components within the electronic control system.

[0089] Based on the above considerations, in order to alleviate the problem that the high temperature generated by the battery cell can easily damage the electronic control component, this application provides a battery device in which the electronic control component includes a bracket and an electronic control component. The electronic control component is disposed on the side of the bracket body away from the battery cell, and a heat insulation plate is disposed on the side of the bracket body facing the battery cell. At the same time, a protruding structure is disposed on the side of the bracket body facing the battery cell, so that a cavity is formed by the bracket body, the protruding structure and the heat insulation plate.

[0090] In such a battery device, the heat insulation plate can impede the transfer of heat, thereby reducing the potential damage of heat to the circuit board or other electronic control components; at the same time, the cavity can further impede the transfer of heat, and the cavity can also dissipate heat outside the electronic control components, so as to further reduce the potential damage of heat to the circuit board or other electronic control components.

[0091] The battery device disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0092] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0093] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 300 and a motor 200. The controller 300 is used to control the battery device 100 to supply power to the motor 200, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0094] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0095] refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery device 100 provided in some embodiments of this application.

[0096] The battery device 100 mentioned in the embodiments of this application may include one or more battery assemblies for providing voltage and capacity. The battery assembly may include multiple battery cells 20, which are connected in series, parallel, or mixed connection via a busbar.

[0097] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells 20.

[0098] As an example, the battery assembly can be a battery module, which consists of multiple battery cells 20 arranged and fixed together to form an independent module. As an example, a battery module can also be formed by bundling multiple battery cells 20 together with cable ties.

[0099] In some embodiments, the battery assembly may be a battery pack, which includes a housing 10 and one or more battery assemblies housed within the housing 10.

[0100] As an example, the battery assembly can be a battery module, which can be housed in the housing 10 by fixing the battery module in the housing 10.

[0101] As an example, the battery assembly can also be housed in the housing 10 by directly fixing multiple battery cells 20 to the housing 10.

[0102] As an example, the housing 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fastened together to form a closed space inside the housing 10 for housing the battery assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 11 may be a top cover or a bottom plate.

[0103] As an example, the housing 10 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 10 forms an enclosed space to house the battery assembly.

[0104] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0105] refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. A battery cell 20 refers to the smallest unit constituting a battery device 100. As shown, the battery cell 20 includes an end cap 22, a housing 21, an electrode assembly 23, and other functional components.

[0106] End cap 22 refers to a component that covers the opening of housing 21 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 22 can be adapted to the shape of housing 21 to fit it. Optionally, end cap 22 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 22 is not easily deformed under pressure and impact, allowing battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 24 can be provided on end cap 22. Electrode terminals 24 can be used for electrical connection with electrode assembly 23 for outputting or inputting electrical energy to battery cell 20. In some embodiments, end cap 22 can also be provided with a pressure relief structure 25 for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 22 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 22. The insulating element can be used to isolate the electrical connection components within the housing 21 from the end cap 22 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0107] The housing 21 is a component used to cooperate with the end cap 22 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 21 and the end cap 22 can be independent components. An opening can be provided on the housing 21, and the end cap 22 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 22 and the housing 21 can be integrated. Specifically, the end cap 22 and the housing 21 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 21, the end cap 22 closes the housing 21. The housing 21 can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 21 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 21 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0108] Electrode assembly 23 is the component in the battery cell 20 where electrochemical reactions occur. The housing 21 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery cell 20, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 24 to form a current loop.

[0109] refer to Figures 4 to 7 In a first aspect, some embodiments of this application provide a battery device 100, including a housing 10, a battery cell 20, and an electronic control assembly 30. The battery cell 20 is housed within the housing 10; the electronic control assembly 30 is housed within the housing 10 and includes a support 31 and electronic control components. The support 31 includes a support body 311, with a protruding structure 312 connected to the side of the support body 311 facing the battery cell 20. The electronic control components are located on the side of the support body 311 away from the battery cell 20. The electronic control assembly 30 also includes a heat insulation plate 32 located on the side of the support body 311 facing the battery cell 20. The heat insulation plate 32, the support body 311, and the protruding structure 312 form a cavity 33.

[0110] In the figure, the X-axis is the length direction of the electronic control component 30, the Y-axis is the width direction of the electronic control component 30, and the Z-axis is the height direction of the electronic control component 30.

[0111] The housing 10 is used to provide a space for the battery cell 20 and the electronic control assembly 30. The housing 10 can be cylindrical, cuboid or other shapes. The housing 10 can be provided with a space to accommodate the battery cell 20, electronic control assembly 30, etc.

[0112] Battery cell 20 refers to the smallest unit constituting battery device 100. Battery cell 20 can be a rechargeable battery, which is a battery cell 20 that can be recharged to activate the active materials and continue to be used after being discharged. Battery cell 20 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 this application embodiment is not limited to this.

[0113] The electronic control component 30 refers to the device in the battery device 100 that uses electricity to control the state of the battery device 100 or to collect information. The electronic control component 30 may include a battery management system (BMS) or a battery monitoring circuit (CSC). When the electronic control component 30 includes a battery piping system, it can be directly connected to each individual battery cell 20 and monitor the voltage, temperature, and other status information of each individual battery cell 20 to ensure effective battery management. Through data analysis, it optimizes the charging process, extends battery life, and prevents potential dangers such as overcharging, over-discharging, short circuits, and overheating. Furthermore, the electronic control component 30 may also have a balancing function to balance the charge of each battery cell, preventing overall performance degradation due to imbalances between cells.

[0114] The electronic control component 30 is housed within the housing 10. The electronic control component 30 can be connected to the battery cell 20, the housing 10, or other structures of the battery device 100. For example, the electronic control component 30 can be connected to the battery cell 20 to reduce the space between the battery cell 20 and the electronic control component 30, thereby reducing the space occupied by the electronic control component 30 and mitigating its negative impact on the energy density of the battery device 100.

[0115] The bracket 31 refers to the structure in the electronic control assembly 30 that is mainly used to provide a fixed foundation for the electronic control components and other structures. Depending on the installation position of the electronic control assembly 30, the bracket 31 can be connected to the battery cell 20, or to the housing 10 or other structures of the battery device 100. The material of the bracket 31 may include metal, plastic or other materials.

[0116] Understandably, the electronic control assembly 30 may also include other structures, such as a cover connected to the bracket 31, to form a space for accommodating the electronic control components and other structures, thereby separating the electronic control components and other structures from the space outside the electronic control assembly 30.

[0117] The support body 311 refers to the main structure of the support 31, and the electrical control components can be set on the support body 311. The support body 311 can be a plate-shaped structure, a block-shaped structure, or a structure of other shapes. The support body 311 can be rectangular, circular, or other shapes. The material of the support body 311 can include metal, plastic, or other materials.

[0118] The electronic control component refers to the circuit electronic structure in the electronic control assembly 30. The electronic control component may include circuit boards, electronic components or other electrical structures. The circuit board refers to the support structure that connects electronic components and circuits together, and is used to realize functions such as circuit layout design and electrical signal transmission.

[0119] The electronic control components are located on the side of the bracket body 311 away from the battery cell 20. At this time, the bracket body 311 can block some of the heat to reduce the heat transferred to the electronic control components, thereby improving the stability of the electronic control components 30 and reducing the damage to the electronic control components 30 caused by external temperatures. The electronic control components can be connected to the bracket body 311 by welding, screwing or other means.

[0120] The protruding structure 312 refers to a structure that protrudes from the support body 311. The protruding structure 312 may include ribs, plates, platforms, columns, etc. The protruding structure 312 may also be a platform-shaped structure or other shapes. The shape of the protruding structure 312 may include a rectangle, a triangle, or other shapes. The protruding structure 312 may include only one type of structure or multiple different structures. The protruding structure 312 is connected to the support body 311. The protruding structure 312 may be connected to the support body 311 by welding, bonding, screwing, or other means. The protruding structure 312 may also be integrally formed with the support body 311.

[0121] The heat insulation board 32 refers to the structure in the electronic control component 30 used to hinder heat transfer. The heat insulation board 32 has poor thermal conductivity, thus hindering heat transfer. The shape of the heat insulation board 32 can be circular, square, trapezoidal or other shapes. The shape of the heat insulation board 32 can also be set according to the shape of the support body 311. The material of the heat insulation board 32 can include mica, asbestos or other materials with good thermal insulation properties.

[0122] The heat insulation plate 32 is located on the side of the bracket body 311 facing the battery cell 20 to prevent the heat generated by the battery cell 20 from being transferred to the electronic control components. The heat insulation plate 32 can be directly connected to the bracket body 311, for example, by welding, screwing or other means. The heat insulation plate 32 can also be indirectly connected to the bracket body 311, for example, by an intermediate structural member. When the protruding structure 312 is located on the side of the bracket body 311 facing the battery cell 20, the heat insulation plate 32 can also be connected to the protruding structure 312.

[0123] The protruding structure 312 is located on the side of the support body 311 facing the battery cell 20. Under the action of the protruding structure 312, the heat insulation plate 32 is spaced apart from the support body 311. At this time, the heat insulation plate 32, the support body 311, and the protruding structure 312 together form a cavity 33. The cavity 33 is formed between the heat insulation plate 32 and the support body 311 and is located on the side of the support body 311 facing the battery cell 20. The cavity 33 can be a cuboid space, a cylindrical space, or a space of other shapes. Depending on the shape of the protruding structure 312, the heat insulation plate 32, and the support body 311, the cavity 33 can be a closed space or an open space connected to the environment outside the electronic control component 30. Depending on the shape and number of the protruding structures 312, the number of cavities 33 can be one, two, or more.

[0124] When cavity 33 is a closed space, the air in cavity 33 can hinder heat transfer due to the poor thermal conductivity of air. When cavity 33 is an open space, the air in cavity 33 can exchange with the air flow outside cavity 33 and can exchange heat with the environment outside electronic control component 30 to achieve heat dissipation, thereby better hindering heat transfer.

[0125] The protruding structure 312 is mainly used to separate the heat insulation plate 32 from the support body 311, so as to form a cavity 33 between the heat insulation plate 32 and the support body 311, and improve the heat insulation effect through the air in the cavity 33. Therefore, the space occupied by the protruding structure 312 should be small so that the cavity 33 has a larger space and can play a better role in heat insulation.

[0126] As the ambient temperature rises, the stability of the electronic control components will decrease, and the electronic control components will also be prone to deformation. For example, if the electronic control component is a circuit board, the circuit board is prone to solder joint breakage, loosening or disconnection of electronic components at high temperatures, which can easily lead to failure or damage of the electronic control component 30.

[0127] Accordingly, in this embodiment, a protruding structure 312 is provided on the side of the support body 311 facing the battery cell 20, and a cavity 33 is formed by the heat insulation plate 32, the protruding structure 312 and the support body 311. The cavity 33 and the heat insulation plate 32 work together to prevent the transfer of heat and achieve the effect of heat insulation, thereby reducing the negative impact of the high temperature generated by the battery cell 20 on the electronic control component 30.

[0128] refer to Figure 7 In some embodiments, the protruding structure 312 includes a first reinforcing rib 3121 connected to the support body 311.

[0129] The first reinforcing rib 3121 refers to a part of the protruding structure 312. The first reinforcing rib 3121 can improve the strength of the support body 311. The first reinforcing rib 3121 can be a rectangular plate, a triangular plate, a prism, or other shapes. The number of first reinforcing ribs 3121 can be one, two, or more.

[0130] The heat insulation plate 32 can be connected to the side of the first reinforcing rib 3121 away from the support body 311. The heat insulation plate 32 can also be directly connected to the support body 311 or connected to the support body 311 through other intermediate structures.

[0131] The heat insulation plate 32 and the support body 311 can together with the first reinforcing rib 3121 to form a cavity 33. Depending on the number and shape of the first reinforcing rib 3121, the cavity 33 can be an open space or a closed space. The number of cavities 33 can be one, two or more.

[0132] For example, when there is only one first reinforcing rib 3121, the cavity 33 formed by the heat insulation plate 32, the support body 311 and the first reinforcing rib 3121 can be an open space. One or more sides of the cavity 33 can be connected to the environment outside the electronic control component 30 to facilitate air circulation and heat dissipation.

[0133] For example, when there are two or more first reinforcing ribs 3121, the extension directions of each first reinforcing rib 3121 may be different and intersect. In this case, each first reinforcing rib 3121, together with the heat insulation plate 32 and the support body 311, can form a closed cavity 33 to impede heat transfer through the air in the cavity 33.

[0134] In this embodiment, the protruding structure 312 includes a first reinforcing rib 3121. The first reinforcing rib 3121 can cooperate with the heat insulation plate 32 and the support body 311 to form a cavity 33 to hinder the transfer of heat. At the same time, the first reinforcing rib 3121 can also improve the strength of the support 31.

[0135] refer to Figure 7 In some embodiments, the protruding structure 312 further includes a second reinforcing rib 3122 connected to the support body 311, the second reinforcing rib 3122 intersecting with the first reinforcing rib 3121.

[0136] The second reinforcing rib 3122 refers to a part of the protruding structure 312. The second reinforcing rib 3122 can improve the strength of the support body 311. The second reinforcing rib 3122 can be a rectangular plate, a triangular plate, a prism, or other shapes. The number of second reinforcing ribs 3122 can be one, two, or more.

[0137] The heat insulation plate 32 can be connected to the side of the second reinforcing rib 3122 away from the support body 311. The heat insulation plate 32 can also be directly connected to the support body 311 or connected to the support body 311 through other intermediate structures.

[0138] The second reinforcing rib 3122 intersects with the first reinforcing rib 3121, meaning that the length directions of the second reinforcing rib 3122 and the first reinforcing rib 3121 are different; the heat insulation plate 32 and the support body 311 can together with the first reinforcing rib 3121 and the second reinforcing rib 3122 to form a cavity 33; depending on the number and shape of the first reinforcing rib 3121 and the second reinforcing rib 3122, the cavity 33 can be an open space or a closed space, and the number of cavities 33 can be one, two or more.

[0139] For example, when there is only one first reinforcing rib 3121 and one second reinforcing rib 3122, the cavity 33 formed by the heat insulation plate 32, the support body 311 and the first reinforcing rib 3121 and the second reinforcing rib 3122 can be an open space. One or more sides of the cavity 33 can be connected to the environment outside the electronic control component 30 to facilitate air circulation and heat dissipation.

[0140] For example, when there are two or more first reinforcing ribs 3121 and second reinforcing ribs 3122, the two second reinforcing ribs 3122, the two first reinforcing ribs 3121, the heat insulation plate 32, and the support body 311 can form a closed cavity 33. The cavity 33 is located between the two second reinforcing ribs 3122, between the two first reinforcing ribs 3121, and between the support body 311 and the heat insulation plate 32. The air in the closed cavity 33 can impede heat transfer.

[0141] In this embodiment, the protruding structure 312 further includes a second reinforcing rib 3122, and the second reinforcing rib 3122 intersects with the first reinforcing rib 3121, so that the first reinforcing rib 3121 and the second reinforcing rib 3122 can form multiple cavities 33 to better hinder the transfer of heat and improve the heat insulation effect; at the same time, the arrangement of the first reinforcing rib 3121 and the second reinforcing rib 3122 can also better improve the strength of the bracket 31.

[0142] refer to Figure 7 In some embodiments, the number of first reinforcing ribs 3121 is at least two, and each first reinforcing rib 3121 is arranged at intervals along a first direction; the number of second reinforcing ribs 3122 is at least two, and each second reinforcing rib 3122 is arranged at intervals along a second direction, the second direction being set at an angle to the first direction.

[0143] The number of first reinforcing ribs 3121 is at least two, that is, the number of first reinforcing ribs 3121 can be two, three or more; each first reinforcing rib 3121 is arranged along a first direction, which can be the length direction X of the electronic control component 30, the width direction Y of the electronic control component 30 or other directions; each first reinforcing rib 3121 is arranged at intervals along the first direction so that there is space between each adjacent first reinforcing rib 3121.

[0144] When each of the first reinforcing ribs 3121 is arranged along the first direction, the length direction of the first reinforcing rib 3121 can be perpendicular to the first direction or at an angle to the first direction.

[0145] The number of second reinforcing ribs 3122 is at least two, that is, the number of second reinforcing ribs 3122 can be two, three or more; each second reinforcing rib 3122 is arranged along a second direction, which can be the width direction Y of the electronic control component 30, the length direction X of the electronic control component 30 or other directions; each second reinforcing rib 3122 is arranged at intervals along the second direction so that there is space between each adjacent second reinforcing rib 3122.

[0146] When each of the second reinforcing ribs 3122 is arranged along the second direction, the length direction of the second reinforcing rib 3122 can be perpendicular to the second direction or at an angle to the second direction.

[0147] When the first reinforcing rib 3121 and the second reinforcing rib 3122 intersect, and there are multiple first reinforcing ribs 3121 and multiple second reinforcing ribs 3122, the two first reinforcing ribs 3121 and the two second reinforcing ribs 3122 can work together with the support body 311 and the heat insulation plate 32 to form a closed cavity 33, so that the air in the cavity 33 can hinder the transfer of heat, thereby achieving the effect of heat insulation.

[0148] For example, the first direction is the length direction X of the electronic control component 30, the second direction is the width direction Y of the electronic control component 30, the length direction of the first reinforcing rib 3121 is parallel to the width direction Y of the electronic control component 30, and the length direction of the second reinforcing rib 3122 is parallel to the length direction X of the electronic control component 30. At this time, the first reinforcing rib 3121 and the second reinforcing rib 3122 can divide multiple rectangular spaces on the support body 311. At this time, under the action of the support body 311 and the heat insulation plate 32, each rectangular space can form a closed cavity 33.

[0149] Having at least two of each of the first reinforcing ribs 3121 and the second reinforcing ribs 3122, and having each of the first reinforcing ribs 3121 and the second reinforcing ribs 3122 intersect, can also improve the strength of the support body 311, so that the support body 311 can better provide support and protection for structures such as electrical control components.

[0150] Given a fixed required strength for the support body 311, the material of the support body 311 can be more varied due to the presence of the first reinforcing rib 3121 and the second reinforcing rib 3122. For example, since the first reinforcing rib 3121 and the second reinforcing rib 3122 can improve the strength of the support body 311, the support body 311 can be made of a material with lower strength but also lower weight, such as plastic, to reduce the weight of the electronic control component 30.

[0151] This embodiment provides a arrangement of first reinforcing ribs 3121 and second reinforcing ribs 3122. This arrangement can form multiple cavities 33 on the side of the bracket body 311 facing the battery cell 20 to better improve the heat insulation effect. At the same time, this arrangement can also further improve the strength of the bracket 31.

[0152] refer to Figure 7 , Figure 8 In some embodiments, the first reinforcing rib 3121 and / or the second reinforcing rib 3122 can divide the cavity 33 into at least two sub-cavities 331; the first reinforcing rib 3121 and / or the second reinforcing rib 3122 are provided with through holes 3123 to connect the sub-cavities 331 on both sides of the through hole 3123, and to make each sub-cavity 331 connected to the space outside the electronic control component 30.

[0153] When the protruding structure 312 includes a first reinforcing rib 3121 and a second reinforcing rib 3122, the first reinforcing rib 3121 and the second reinforcing rib 3122 can divide the cavity 33 into a plurality of sub-cavities 331, that is, the sub-cavities 331 are spatial structures formed by dividing the cavity 33 through the first reinforcing rib 3121 and / or the second reinforcing rib 3122.

[0154] The number of sub-cavities 331 can be two, three, or more. Sub-cavities 331 can be cuboid spatial structures, cylindrical, polygonal, or other shaped spatial structures. The number, shape, and arrangement of sub-cavities 331 vary depending on the number and arrangement of the first reinforcing ribs 3121 and the second reinforcing ribs 3122. For example, the sub-cavities 331 can be cuboid spaces, arranged in an array along the length direction X and width direction Y of the electronic control assembly 30.

[0155] A through hole 3123 refers to a hole structure provided on the first reinforcing rib 3121 or the second reinforcing rib 3122. The through hole 3123 can be a circular hole, a square hole, or a hole structure of other shapes. The through hole 3123 can be a straight hole, a stepped hole, a conical hole, or a through hole structure of other shapes. The through hole 3123 can separate the corresponding first reinforcing rib 3121 or the second reinforcing rib 3122 into two parts. The through hole 3123 can also be provided only on a portion of the first reinforcing rib 3121 or the second reinforcing rib 3122. The through hole 3123 can be provided only on the first reinforcing rib 3121 or the second reinforcing rib 3122, or it can be provided on both the first reinforcing rib 3121 and the second reinforcing rib 3122. Only one through hole 3123 can be provided on a first reinforcing rib 3121 or the second reinforcing rib 3122, or two or more through holes 3123 can be provided.

[0156] The through hole 3123 is used to connect the sub-cavities 331 on both sides. The through hole 3123 is also used to connect the sub-cavities 331 on one side of the corresponding first reinforcing rib 3121 or second reinforcing rib 3122 to the space outside the electronic control assembly 30. At the same time, this arrangement enables any cavity 33 to be connected to the space outside the electronic control assembly 30. Each cavity 33 can be directly connected to the space outside the electronic control assembly 30, or it can be indirectly connected to the space outside the electronic control assembly 30 through other cavities 33.

[0157] When there are multiple first reinforcing ribs 3121 and multiple second reinforcing ribs 3122, one side of a first reinforcing rib 3121 may have multiple sub-cavities 331. In this case, multiple through holes 3123 can be provided on the first reinforcing rib 3121, and each through hole 3123 can be connected to each sub-cavity 331 respectively. Similarly, one side of a second reinforcing rib 3122 may also have multiple sub-cavities 331. In this case, multiple through holes 3123 can be provided on the second reinforcing rib 3122, and each through hole 3123 can be connected to each sub-cavity 331 respectively.

[0158] Understandably, provided that any sub-cavity 331 can be directly or indirectly connected to the space outside the electronic control component 30, the sub-cavity 331 can be connected to all other adjacent sub-cavities 331, or the sub-cavity 331 can be connected to only one or several adjacent other sub-cavities 331.

[0159] Since each sub-cavity 331 can be connected to the space outside the electronic control component 30, air outside the electronic control component 30 can enter each sub-cavity 331, and air in each sub-cavity 331 can be discharged to the space outside the electronic control component 30. That is, the air in each sub-cavity 331 can circulate and exchange with the air outside the electronic control component 30 to achieve the effect of heat dissipation. At this time, the air in each sub-cavity 331 can prevent heat from being transferred to the support body 311, and the circulating air can also play a role in heat dissipation, thereby better reducing the damage that high temperature may cause to the electronic control components and other structures.

[0160] In this embodiment, through holes 3123 are provided on the first reinforcing rib 3121 and / or the second reinforcing rib 3122 so that each sub-cavity 331 can be interconnected, so that the gas in the sub-cavity 331 can exchange with the gas outside the cavity 33, and can carry away heat in the process of gas exchange, thereby improving the heat insulation effect of the support 31.

[0161] refer to Figure 7 , Figure 8 In some embodiments, the ratio of the size of the corresponding through hole 3123 to the size of the adjacent cavity 33 in the length direction of the first reinforcing rib 3121 or the second reinforcing rib 3122 is in the range of 0.25 to 0.4.

[0162] Since the through hole 3123 is located on the first reinforcing rib 3121 or the second reinforcing rib 3122, the dimension of the through hole 3123 along the length of the corresponding first reinforcing rib 3121 or second reinforcing rib 3122 is a radial dimension of the through hole 3123, which is... Figure 8 The dimensions shown in L1.

[0163] The dimension of cavity 33 along the length of the first reinforcing rib 3121 or the second reinforcing rib 3122 corresponds to the radial dimension of the portion of the corresponding first reinforcing rib 3121 or the second reinforcing rib 3122 corresponding to the cavity 33 in the through hole 3123. This dimension is... Figure 8 The dimensions shown in L2.

[0164] The larger the size of the through hole 3123 on the first reinforcing rib 3121 or the second reinforcing rib 3122, the higher the air flow efficiency in the cavity 33 connected on both sides of the through hole 3123; while the larger the size of the through hole 3123 on the first reinforcing rib 3121 or the second reinforcing rib 3122, the lower the strength of the corresponding first reinforcing rib 3121 or the second reinforcing rib 3122.

[0165] The ratio of the size of the through hole 3123 to the size of the adjacent cavity 33 is in the range of 0.25 to 0.4, that is, the ratio between L1 and L2 is in the range of 0.25 to 0.4; for example, the ratio can be 0.25, 0.3, 0.35, 0.4 or other values.

[0166] For example, the ratio of the size of the through hole 3123 to the size of the adjacent cavity 33 can be 0.25. In this case, the size of the through hole 3123 in its radial direction is smaller, and the corresponding strength of the first reinforcing rib 3121 or the second reinforcing rib 3122 is higher.

[0167] For example, the ratio of the size of the through hole 3123 to the size of the adjacent cavity 33 can be 0.32. In this case, the size of the through hole 3123 in its radial direction is moderate, and air can flow through the through hole 3123 with high efficiency. The strength of the corresponding first reinforcing rib 3121 or second reinforcing rib 3122 is also moderate.

[0168] For example, the ratio of the size of the through hole 3123 to the size of the adjacent cavity 33 can be 0.4. In this case, the through hole 3123 has a larger radial dimension, and air can flow through the through hole 3123 with higher efficiency to better dissipate heat and hinder the transfer of heat.

[0169] This embodiment provides a range of through-hole sizes 3123 so that the through-holes 3123 can both allow gas to flow through, so that the flowing gas can carry away heat and achieve cooling, and reduce the negative impact of the through-holes 3123 on the strength of the first reinforcing rib 3121 and / or the second reinforcing rib 3122.

[0170] refer to Figure 6 , Figure 7 , Figures 9 to 12 In some embodiments, the electronic control component 30 further includes a connection structure 34, which is disposed between the heat insulation plate 32 and the support body 311, and the heat insulation plate 32 is connected to the connection structure 34; the heat insulation plate 32 is connected to at least a partially protruding structure 312, and / or the heat insulation plate 32 is spaced apart from the at least partially protruding structure 312.

[0171] The connection structure 34 refers to the structure in the electronic control assembly 30 used to connect the heat insulation plate 32 to the bracket body 311. The connection structure 34 is located between the heat insulation plate 32 and the bracket body 311, that is, the connection structure 34 is located on the side of the bracket body 311 facing the battery cell 20, so as to fix the heat insulation plate 32 to the side of the bracket body 311 facing the battery cell 20. The number of connection structures 34 can be one, two or more.

[0172] The connecting structure 34 may include a snap-fit ​​structure, such as a buckle; the connecting structure 34 may also include a screw-fit structure, such as a bolt or nut; the connecting structure 34 may also include an adhesive structure, such as a layered structure formed by structural adhesive; it is understood that the connecting structure 34 may also include other structures, and is not limited to the above-mentioned types.

[0173] Depending on the specific structure of the connecting structure 34, the connecting structure 34 can be connected to the heat insulation plate 32 by screwing, bonding, snapping or other means; depending on the specific structure of the connecting structure 34, the connecting structure 34 can be connected to the bracket body 311 by screwing, bonding, snapping or other means, or the connecting structure 34 can be integrally formed with the bracket body 311.

[0174] When the heat insulation plate 32 is connected to the support body 311 via the connecting structure 34, the heat insulation plate 32 can also be connected to at least a portion of the protruding structure 312 so that the heat insulation plate 32 can be more stably fixed to the support body 311; when the heat insulation plate 32 is connected to at least a portion of the protruding structure 312, the heat insulation plate 32 can be connected to only a portion of the protruding structure 312 or to the entire protruding structure 312. For example, when the protruding structure 312 includes multiple first reinforcing ribs 3121 and multiple second reinforcing ribs 3122, the heat insulation plate 32, when connected to the connecting structure 34, can also be connected to each of the first reinforcing ribs 3121 and each of the second reinforcing ribs 3122. In this case, the heat insulation plate 32 and the support body 311, together with the multiple first reinforcing ribs 3121 and multiple second reinforcing ribs 3122, can form multiple cavities 33. Each cavity 33 is difficult to connect at the connection between the heat insulation plate 32 and the first reinforcing rib 3121, and it is also difficult to connect at the connection between the heat insulation plate 32 and the second reinforcing rib 3122.

[0175] When the heat insulation plate 32 is connected to the support body 311 via the connecting structure 34, the heat insulation plate 32 may also be spaced apart from at least part of the protruding structure 312 to reduce the interference that the protruding structure 312 may cause to the connection of the heat insulation plate 32 to the connecting structure 34, thereby enabling the heat insulation plate 32 to be connected to the connecting structure 34 more stably; when the heat insulation plate 32 is connected to at least part of the protruding structure 312, the heat insulation plate 32 may be spaced apart from only part of the protruding structure 312, or it may be spaced apart from the entire protruding structure 312. For example, when the protruding structure 312 includes multiple first reinforcing ribs 3121 and multiple second reinforcing ribs 3122, the heat insulation plate 32 is spaced apart from each of the first reinforcing ribs 3121 and each of the second reinforcing ribs 3122. In this case, the heat insulation plate 32 and the support body 311, together with the multiple first reinforcing ribs 3121 and the multiple second reinforcing ribs 3122, can form multiple cavities 33. Each cavity 33 can be connected at the heat insulation plate 32 near the first reinforcing rib 3121 or at the heat insulation plate 32 near the second reinforcing rib 3122. It is understood that the distance between the heat insulation plate 32 and the protruding structure 312 should not be too large in order to reduce the space occupied by the electronic control component 30.

[0176] In this embodiment, a connecting structure 34 is provided so that the heat insulation plate 32 is connected to the support body 311 through the connecting structure 34, so that the heat insulation plate 32 can be connected to the support body 311 better and more stably.

[0177] refer to Figure 7 In some embodiments, the area of ​​the connecting structure 34 connected to the heat insulation plate 32 is greater than the area of ​​the protruding structure 312 on the side facing the heat insulation plate 32.

[0178] The area of ​​the connection structure 34 connected to the heat insulation board 32 can reflect the stability of the connection between the heat insulation board 32 and the connection structure 34. The larger the area of ​​the connection structure 34 connected to the heat insulation board 32, the stronger the connection stability between the heat insulation board 32 and the connection structure 34. When there are multiple connection structures 34, the area of ​​the connection structure 34 connected to the heat insulation board 32 refers to the sum of the connection areas of each connection structure 34 and the heat insulation board 32.

[0179] The area of ​​the protruding structure 312 facing the heat insulation plate 32 refers to the area of ​​all the protruding structures 312 facing the heat insulation plate 32. When the protruding structure 312 includes multiple first reinforcing ribs 3121 and multiple second reinforcing ribs 3122, the area of ​​the protruding structure 312 facing the heat insulation plate 32 is the sum of the areas of each first reinforcing rib 3121 and each second reinforcing rib 3122 facing the heat insulation plate 32.

[0180] Since the protruding structure 312 is mainly used to separate the heat insulation plate 32 from the support body 311 to form a space between the heat insulation plate 32 and the support body 311, and to improve the heat insulation effect through the air in the cavity 33, the space occupied by the protruding structure 312 should be small. The area that the protruding structure 312 can provide for the connection of the heat insulation plate 32 is small, which can easily lead to poor connection stability of the heat insulation plate 32.

[0181] Accordingly, in this embodiment, the area of ​​the connecting structure 34 connected to the heat insulation plate 32 is larger than the area of ​​the protruding structure 312 facing the heat insulation plate 32. Compared with directly connecting the heat insulation plate 32 to the protruding structure 312, this arrangement can increase the connection area of ​​the heat insulation plate 32, thereby improving the connection stability between the heat insulation plate 32 and the support body 311.

[0182] refer to Figures 5 to 7 , Figures 9 to 14 In some embodiments, the size of the connecting structure 34 is larger than the size of the protruding structure 312 in the arrangement direction of the support body 311 and the heat insulation plate 32.

[0183] The arrangement direction of the support body 311 and the heat insulation plate 32 can be... Figure 5 In the direction of the Z-axis, the dimension of the connecting structure 34 in this arrangement direction is greater than the dimension of the protruding structure 312, that is, the end of the connecting structure 34 away from the support body 311 is higher than the end of the protruding structure 312 away from the support body 311.

[0184] Since the heat insulation plate 32 is connected to the end of the connecting structure 34 away from the support body 311, after the heat insulation plate 32 is connected to the connecting structure 34, this arrangement can create a gap between the heat insulation plate 32 and the protruding structure 312, so as to reduce the interference that the protruding structure 312 may cause to the stable connection between the heat insulation plate 32 and the connecting structure 34, thereby enabling the heat insulation plate 32 to be connected to the connecting structure 34 more stably.

[0185] This embodiment provides some dimensional relationships between the connecting structure 34 and the protruding structure 312, so that the heat insulation plate 32 can be spaced apart from the protruding structure 312 when it is connected to the connecting structure 34, thereby reducing the interference of the protruding structure 312 on the connection of the heat insulation plate 32 to the connecting structure 34, and enabling the heat insulation plate 32 to be connected to the connecting structure 34 more stably.

[0186] refer to Figure 6 , Figure 7 , Figures 9 to 14 In some embodiments, the connecting structure 34 includes a base 341 connected to the support body 311; the connecting structure 34 also includes an adhesive layer 342, one side of which is connected to the base 341 and the other side of which is connected to the heat insulation plate 32.

[0187] The base 341 refers to the part of the connecting structure 34 that is connected to the support body 311. The base 341 is used to provide a fixed foundation for the adhesive layer 342. The base 341 can be a cuboid structure, a cylindrical structure, a frustum structure, a pyramidal structure, or other shapes. The base 341 can be connected to the support body 311 by screwing, snapping, bonding, or other means. The base 341 can also be integrally formed with the support body 311. The material of the base 341 can include metal, plastic, foam, or other materials. The material of the base 341 can be the same as or different from the material of the support body 311.

[0188] For example, the base 341 is formed by protruding from the support body 311 in the direction of the heat insulation plate 32, that is, the base 341 and the support body 311 are integrally formed. In this case, the base 341 can be formed by stamping the support body 311.

[0189] The adhesive layer 342 refers to the part of the connecting structure 34 that is connected to the heat insulation plate 32. The adhesive layer 342 is used to bond the heat insulation plate 32 to the base 341 and thereby fix the heat insulation plate 32 to the support body 311. The adhesive layer 342 can completely cover the base 341 or only cover a part of the base 341. The area of ​​the connecting structure 34 connected to the heat insulation plate 32 is the area of ​​the adhesive layer 342 connected to the heat insulation plate 32.

[0190] When the connecting structure 34 includes only the base 341 and the adhesive layer 342, the dimension of the connecting structure 34 in the arrangement direction of the support body 311 and the heat insulation plate 32 is the sum of the dimension of the base 341 in that arrangement direction and the dimension of the adhesive layer 342 in that arrangement direction.

[0191] Because the protruding structure 312 has a certain size in the arrangement direction of the support body 311 and the heat insulation plate 32, the connecting structure 34 includes a base 341 to reduce the thickness of the adhesive layer 342, shorten the time required for the adhesive layer 342 to form, improve the fixing efficiency of the heat insulation plate 32, and also reduce the cost of the adhesive layer 342. At the same time, because the strength of the adhesive layer 342 is usually weaker than the strength of structural components such as the support body 311, an excessively thick adhesive layer 342 can easily lead to a decrease in the stability of the connection of the heat insulation plate 32 and can easily cause the heat insulation plate 32 to wobble relative to the support body 311. Therefore, including a base layer and a connecting structure 34 in the connecting structure 34 can also improve the connection stability of the heat insulation plate 32.

[0192] In this embodiment, the connecting structure 34 includes a base 341 and an adhesive layer 342 to reduce the thickness of the adhesive layer 342. This reduces the amount of adhesive used, thereby enabling the heat insulation board 32 to be fixed to the bracket body 311 more stably, and also reduces costs.

[0193] refer to Figure 6, Figure 7 , Figures 9 to 14 In some embodiments, in the arrangement direction of the support body 311 and the heat insulation plate 32, the size of the base 341 is less than or equal to the size of the protruding structure 312.

[0194] The dimension of the base 341 in the arrangement direction of the support body 311 and the heat insulation plate 32 is the dimension of the base 341 protruding from the support body 311, which is also the height of the support body 311; the dimension of the protruding structure 312 in the arrangement direction of the support body 311 and the heat insulation plate 32 is the dimension of the protruding structure 312 protruding from the support body 311, which is also the height of the protruding structure 312.

[0195] refer to Figure 14 When the support body 311 and the heat insulation plate 32 are arranged along the height direction Z of the electrical control component 30, the dimension shown by H1 is the dimension of the base 341 in the arrangement direction of the support body 311 and the heat insulation plate 32, and the dimension shown by h is the dimension of the protruding structure 312 in the arrangement direction of the support body 311 and the heat insulation plate 32.

[0196] The height of the base 341 is less than the height of the protruding structure 312, that is, H1 < h. At this time, the protruding structure 312 can cooperate with the base 341 to form a space with one end open to accommodate at least a portion of the adhesive layer 342. That is, the part of the adhesive layer 342 connected to the base 341 can be located in this space. The protruding structure 312 can restrict the shape of the adhesive layer 342 and also restrict the displacement of the adhesive layer 342 in the direction of its side, thereby improving the stability of the adhesive layer 342.

[0197] For example, the adhesive layer 342 is formed by the solidification of liquid adhesive. In this case, the protruding structure 312 can cooperate with the base 341 to form a space to accommodate the liquid adhesive, so as to inject the liquid adhesive into the space.

[0198] Understandably, given that the dimensions of the connecting structure 34 in the arrangement direction of the support body 311 and the heat insulation plate 32 are determined, this arrangement can also laterally limit the dimensions of the adhesive layer 342 in the arrangement direction of the support body 311 and the heat insulation plate 32.

[0199] This embodiment provides some dimensional relationships between the base 341 and the protruding structure 312, thereby limiting the size of the adhesive layer 342. This arrangement allows the base 341 to provide a certain foundation for the adhesive layer 342, thereby reducing the thickness of the adhesive layer 342, reducing the amount of adhesive used, and lowering costs. At the same time, this arrangement also ensures that the thickness of the adhesive layer 342 is not too small, so that the adhesive layer 342 can fix the heat insulation board 32 relatively stably.

[0200] refer to Figure 6 , Figure 7 , Figures 9 to 14 In some embodiments, the difference between the size of the base 341 and the size of the protruding structure 312 in the arrangement direction of the support body 311 and the heat insulation plate 32 is in the range of 1mm to 2mm.

[0201] The dimension of the base 341 in the direction of the arrangement of the support body 311 and the heat insulation plate 32 is the height of the base 341 protruding from the support body 311, which is also... Figure 14 The dimension shown in H1; the dimension of the protruding structure 312 in the arrangement direction of the support body 311 and the heat insulation plate 32 is the height of the protruding structure 312 protruding from the support body 311, which is also the... Figure 14 The dimension shown in h; since the height of the base 341 is less than the height of the protruding structure 312, the difference between the height of the base 341 and the height of the protruding structure 312 is the height of the protruding structure 312 above the base 341.

[0202] The difference between the height of the base 341 and the height of the protruding structure 312 can reflect the thickness of the adhesive layer 342. The smaller the difference, the smaller the thickness of the adhesive layer 342 and the smaller the amount of adhesive applied to the adhesive layer 342.

[0203] The difference between the height of the base 341 and the height of the protruding structure 312 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm or other parameters.

[0204] For example, the difference between the height of the base 341 and the height of the protruding structure 312 can be 1 mm. In this case, the height of the base 341 is relatively high, and the overall strength of the connecting structure 34 is also relatively high. The thickness of the adhesive layer 342 can be relatively thin, the amount of adhesive applied to the adhesive layer 342 is also less, and the cost of the adhesive layer 342 is relatively low.

[0205] For example, the difference between the height of the base 341 and the height of the protruding structure 312 can be 1.5mm. At this time, the height of the base 341 is moderate, the thickness of the adhesive layer 342 is also moderate, the heat insulation board 32 can be connected to the base 341 relatively stably through the adhesive layer 342, and the cost of the adhesive layer 342 can also be reduced.

[0206] For example, the difference between the height of the base 341 and the height of the protruding structure 312 can be 2mm. In this case, the adhesive layer 342 is thicker, and the heat insulation board 32 can be more stably connected to the base 341 through the adhesive layer 342, thereby enabling the heat insulation board 32 to be more stably connected to the support body 311.

[0207] This embodiment further provides some dimensional relationships between the base 341 and the protruding structure 312, so that the adhesive layer 342 can not only fix the heat insulation board 32 more stably, but also reduce the cost of the adhesive layer 342, and at the same time enable the connection structure 34 to have high strength.

[0208] refer to Figure 6 , Figure 7 , Figures 9 to 14 In some embodiments, the connection structure 34 includes an adhesive layer 342, one side of which is connected to the support body 311 and the other side of which is connected to the heat insulation plate 32.

[0209] In this embodiment, the connecting structure 34 includes an adhesive layer 342 but not a base 341. The heat insulation plate 32 can be directly connected to the support body 311 through the adhesive layer 342. At this time, the size of the connecting structure 34 in the arrangement direction of the support body 311 and the heat insulation plate 32 is the size of the adhesive layer 342. When the size of the connecting structure 34 in this arrangement direction is greater than the size of the protruding structure 312, the size of the adhesive layer 342 in this direction is greater than the size of the protruding structure 312.

[0210] In this embodiment, the connecting structure 34 includes an adhesive layer 342 to fix the heat insulation plate 32 to the bracket body 311 through the adhesive layer 342.

[0211] refer to Figure 6 , Figure 7 , Figures 9 to 14 In some embodiments, the size of the adhesive layer 342 ranges from 1.2 mm to 2.2 mm in the arrangement direction of the support body 311 and the heat insulation plate 32.

[0212] The dimension of the adhesive layer 342 in the arrangement direction of the support body 311 and the heat insulation plate 32 is the thickness of the adhesive layer 342, which is also the... Figure 14 The dimensions shown in H2; the thickness of the adhesive layer 342 is related to the connection stability of the heat insulation board 32. The thicker the adhesive layer 342, the greater the amount of adhesive applied to the adhesive layer 342, and the higher the connection stability between the heat insulation board 32 and the adhesive layer 342, but the higher the cost.

[0213] The thickness of adhesive layer 342 can be 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm or other parameters.

[0214] For example, the thickness of adhesive layer 342 can be 1.2 mm. In this case, the thickness of adhesive layer 342 can be relatively thin, the amount of adhesive applied to adhesive layer 342 is also less, and the cost of adhesive layer 342 is lower.

[0215] For example, the thickness of the adhesive layer 342 can be 1.7mm. At this thickness, the heat insulation board 32 can be stably connected to the adhesive layer 342, while also reducing the cost of the adhesive layer 342.

[0216] For example, the thickness of the adhesive layer 342 can be 2.2 mm. In this case, the adhesive layer 342 is thicker, and the heat insulation board 32 can be more stably connected to the adhesive layer 342, thereby enabling the heat insulation board 32 to be more stably connected to the support body 311.

[0217] This embodiment provides a range of sizes for the adhesive layer 342 so that the adhesive layer 342 can not only fix the heat insulation board 32 to the bracket body 311 relatively stably, but also reduce the cost of the adhesive layer 342.

[0218] refer to Figure 6 , Figure 7 , Figures 9 to 14 In some embodiments, in the arrangement direction of the support body 311 and the heat insulation plate 32, the difference between the size of the connecting structure 34 and the size of the protruding structure 312 is less than or equal to 0.2 mm.

[0219] The dimension of the connecting structure 34 in the arrangement direction of the support body 311 and the heat insulation plate 32 is the height of the connecting structure 34 protruding from the support body 311, which is also... Figure 13 The dimension shown in H; the dimension of the protruding structure 312 in the arrangement direction of the support body 311 and the heat insulation plate 32 is the height of the protruding structure 312 protruding from the support body 311, which is also the... Figure 13 The dimension shown in h; since the height of the connecting structure 34 is greater than or equal to the height of the protruding structure 312, the difference between the height of the connecting structure 34 and the height of the protruding structure 312 is the height of the connecting structure 34 above the protruding structure 312.

[0220] The difference between the height of the connecting structure 34 and the height of the protruding structure 312 is less than or equal to 0.2mm. That is, the difference between the height of the connecting structure 34 and the height of the protruding structure 312 can be 0.2mm, or it can be 0.15mm, 0.1mm, 0.05mm or other parameters.

[0221] For example, the difference between the height of the connecting structure 34 and the height of the protruding structure 312 can be 0.2 mm to reduce the interference that the protruding structure 312 may cause to the connection of the heat insulation plate 32 to the connecting structure 34, and at the same time, to ensure that the distance between the heat insulation plate 32 and the protruding structure 312 is not too large, so as to reduce the space occupied by the electronic control component 30.

[0222] This embodiment provides some dimensional relationships between the connecting structure 34 and the protruding structure 312, such that the size of the connecting structure 34 is larger than the size of the protruding structure 312, so that the heat insulation plate 32 can be spaced apart from the protruding structure 312 and does not contact the protruding structure 312, thereby reducing the negative impact of the protruding structure 312 on the connection stability of the heat insulation plate 32.

[0223] refer to Figure 7 In some embodiments, the number of connection structures 34 is at least two.

[0224] The number of connecting structures 34 can be two, three or more; each connecting structure 34 can be connected to different positions of the heat insulation plate 32 and to different positions of the support body 311, so as to better fix the heat insulation plate 32 to the support body 311.

[0225] For example, the connecting structures 34 are evenly arranged around the side of the support body 311 facing the heat insulation plate 32, and the connecting structures 34 are symmetrically arranged so that the connecting structures 34 can more stably fix the heat insulation plate 32 to the support body 311.

[0226] In this embodiment, the number of connecting structures 34 is at least two, so as to better fix the heat insulation plate 32 to the support body 311.

[0227] refer to Figure 7 In some embodiments, the connection structure 34 is located at the edge of the support body 311.

[0228] Since the connecting structure 34 is located on the side of the bracket body 311 facing the battery cell 20, that is, the connecting structure 34 is located on the edge of the side of the bracket body 311 facing the battery cell 20; the connecting structure 34 can be located at any edge of the side of the bracket body 311 facing the battery cell 20, or at two adjacent edges of the side of the bracket body 311 facing the battery cell 20, that is, the connecting structure 34 can also be located at the corner of the side of the bracket body 311 facing the battery cell 20.

[0229] When there are multiple connecting structures 34, each connecting structure 34 can be evenly spaced at each edge of the bracket body 311 facing the battery cell 20 to reduce the occurrence of heat insulation plate 32 warping, thereby fixing the heat insulation plate 32 to the bracket body 311 more stably.

[0230] In this embodiment, the connecting structure 34 is located at the edge of the support body 311 to reduce the occurrence of warping of the heat insulation board 32, thereby further improving the connection stability of the heat insulation board 32.

[0231] refer to Figure 6 , Figure 9 , Figure 10 In some embodiments, the size of the heat insulation plate 32 ranges from 0.5 mm to 1 mm in the arrangement direction of the support body 311 and the heat insulation plate 32.

[0232] The dimension of the heat insulation plate 32 in the direction of arrangement between the support body 311 and the heat insulation plate 32 is the thickness of the heat insulation plate 32, which is also the... Figure 10 The dimensions shown in T; the thickness of the insulation board 32 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm or other values.

[0233] The thickness of the insulation board 32 can reflect its heat insulation performance. Given a fixed material, the thicker the insulation board 32, the better its heat insulation performance, but the larger the space occupied by the insulation board 32.

[0234] For example, the thickness of the heat insulation board 32 can be 0.5mm. In this case, the heat insulation board 32 is thinner, occupies less space, and is also lighter, resulting in lower cost.

[0235] For example, the thickness of the insulation board 32 can be 0.75mm. At this time, the thickness of the insulation board 32 is moderate, and the insulation board 32 has good heat insulation performance without taking up too much space.

[0236] For example, the thickness of the heat insulation board 32 can be 1mm. At this time, the heat insulation board 32 is thicker and has better heat insulation performance. At the same time, the heat insulation board 32 can also help strengthen the strength of the main body of the support 311 and better protect the electrical control components and other structures.

[0237] This embodiment provides a range of sizes for the heat insulation plate 32 so that the heat insulation plate 32 can both cooperate with the cavity 33 to better impede the transfer of heat and reduce the space occupied by the heat insulation plate 32.

[0238] refer to Figure 6 , Figure 9 , Figure 11 In some embodiments, the electronic control assembly 30 further includes a heat-conducting structure 40 connected to the heat insulation plate 32, at least a portion of which is housed in the cavity 33.

[0239] The heat-conducting structure 40 refers to the structure in the electronic control component 30 that is mainly used for heat conduction. The heat-conducting structure 40 is mainly able to dissipate the heat on the heat insulation plate 32 into the air in the cavity 33, so as to reduce the heat transferred to the electronic control components and other structures through the support body 311. The heat-conducting structure 40 may include independent structural components, such as plate structures, or layered structures formed on the heat insulation plate 32, such as coating layers, etc. The heat-conducting structure 40 may also include other structures. The heat-conducting structure 40 can be a rectangular, circular or other shaped structure, and the shape of the heat-conducting structure 40 can also be set according to the shape of the heat insulation plate 32 and the support body 311. The material of the heat-conducting structure 40 may include silicon, graphene or other materials with good thermal conductivity.

[0240] At least a portion of the heat-conducting structure 40 is accommodated in the cavity 33. The heat-conducting structure 40 can be completely accommodated in the cavity 33. When the cavity 33 is divided into multiple sub-cavities 331 by the first reinforcing rib 3121 and / or the second reinforcing rib 3122, the heat-conducting structure 40 can be multiple and accommodated in each sub-cavity 331 respectively.

[0241] The heat-conducting structure 40 may also be partially housed in the cavity 33, in which case another part of the heat-conducting structure 40 may be opposite to the protruding structure 312, and the other part of the heat-conducting structure 40 may also extend beyond the support body 311; for example, the heat-conducting structure 40 may be a complete continuous structure, with part of the heat-conducting structure 40 opposite to the cavity 33 or each sub-cavity 331, another part of the heat-conducting structure 40 opposite to the protruding structure 312, and the remaining part of the heat-conducting structure 40 extending beyond the support body 311.

[0242] Since at least a portion of the heat-conducting structure 40 is accommodated in the cavity 33, which is formed between the support body 311 and the heat insulation plate 32, the heat-conducting structure 40 is located on the side of the heat insulation plate 32 facing the support body 311, so that the heat on the heat-conducting structure 40 can be dissipated into the air in the cavity 33; the heat insulation plate 32 is located on the side of the heat-conducting structure 40 away from the support body 311, so as to hinder heat transfer and reduce the heat transferred to the heat-conducting structure 40; when the heat insulation plate 32 is connected to the connecting structure 34, the heat-conducting structure 40 can be connected to the connecting structure 34, and the heat-conducting structure 40 can also be connected to the heat insulation plate 32.

[0243] In this embodiment, the electronic control component 30 includes a heat-conducting structure 40 and a heat insulation plate 32. The heat insulation plate 32 hinders the transfer of heat, while the heat-conducting structure 40 conducts some of the heat on the heat insulation plate 32 to the air in the cavity 33, so that the air can circulate, carry heat and dissipate heat, thereby enabling the heat insulation plate 32 to play a better role in heat insulation.

[0244] refer to Figure 6 , Figure 9 , Figure 11 In some embodiments, the heat-conducting structure 40 is connected to the housing 10.

[0245] The heat-conducting structure 40 can be connected to the housing 10 on only one side or on multiple sides. Since the side of the heat-conducting structure 40 facing the support body 311 can be connected to the support body 311, and the side of the heat-conducting structure 40 away from the support body 311 can be connected to the heat insulation plate 32, the side of the heat-conducting structure 40 can be connected to the housing 10. The heat-conducting structure 40 can be in contact with the housing 10, or it can be connected to the housing 10 by bonding, welding or other means. The heat-conducting structure 40 can be directly connected to the housing 10, or it can be indirectly connected to the housing 10 through intermediate structural components. The heat-conducting structure 40 can be connected to the inner wall surface of the housing 10, such as the inner wall of the top cover of the housing 10 or the inner wall of the bottom plate of the housing 10. The heat-conducting structure 40 can also be connected to the beam structure inside the housing 10, such as expansion beams, side beams, etc.

[0246] The heat-conducting structure 40 is connected to the housing 10 so that part of the heat on the heat-conducting structure 40 can be transferred to the housing 10, thereby further reducing the heat transferred to the support body 311 and then to the electrical control components and other structures via the support body 311, thus improving the heat insulation effect.

[0247] In this embodiment, the heat-conducting structure 40 is connected to the housing 10 so that the heat-conducting structure 40 can transfer some of the heat on the heat insulation plate 32 to the housing 10, so as to better play the role of heat dissipation.

[0248] In some embodiments, the material of the support body 311 includes at least one of plastic, resin, and rubber.

[0249] The material of the bracket body 311 can include only one of plastic, resin, and rubber, or it can include any two or more of plastic, resin, and rubber; plastic, resin, and rubber all have the advantages of being lightweight, easy to process, and low in cost.

[0250] Because the support body 311 has a protruding structure 312, which can improve the strength of the support body 311, the support body 311 can be made of a material with slightly lower strength if the strength requirement remains unchanged. Because the support body 311 has a heat insulation plate 32 and a cavity 33, the heat insulation effect of the support body 311 is good. If the heat insulation requirement of the support body 311 remains unchanged, the support body 311 can be made of a material with poor heat insulation performance.

[0251] Accordingly, this embodiment provides some materials for the support body 311. Under the premise that the heat insulation plate 32 and the cavity 33 have a good heat insulation effect, and under the premise that the protruding structure 312 improves the strength of the support body 311, this arrangement can reduce the weight of the support body 311, so as to reduce the overall weight of the battery device 100, and also reduce the cost of the support body 311.

[0252] In some embodiments, the electronic control component 30 further includes a housing connected to the support body 311, and the electronic control components are located inside the housing; the housing and the support body 311 are integrally injection molded structures.

[0253] The outer shell refers to the structure used to cooperate with the support body 311 to form the internal environment of the electronic control component 30. The electronic control components and other structures can be housed in the outer shell to separate the electronic control components and other structures from the space outside the electronic control component 30, thereby protecting the electronic control components and other structures. The outer shell can form a closed internal environment with the support body 311, or it can form an open external environment with the support body 311 and be connected to the space outside the electronic control component 30. The outer shell can be square, round or other shapes.

[0254] The outer shell and the main support body 311 are integrally injection molded structures, that is, the outer shell and the main support body 311 are formed by integral injection molding process, so as to improve the consistency between the outer shell and the main support body 311 and improve the stability of the structure; at the same time, this setting can also improve the strength of the structure and improve the processing efficiency.

[0255] In this embodiment, the bracket body 311 and the outer shell are integrally injection molded to enable the structure to have high stability, reduce problems such as uneven strength that may be caused by secondary processing such as bonding and welding, and reduce the risk of impurities other than the electronic control components 30 entering the interior of the outer shell.

[0256] In some embodiments, the electronic control component 30 is disposed on the side of the battery cell 20 where the pressure relief structure 25 is provided.

[0257] The pressure relief structure 25 refers to the internal pressure relief structure in the battery cell 20 used to relieve internal pressure after the internal pressure or temperature reaches a standard. The pressure relief structure 25 may include an explosion-proof valve, an explosion-proof diaphragm, or other structures. The pressure relief structure 25 may be provided on the end cap 22 of the battery cell 20 or on the housing 21 of the battery cell 20. One pressure relief structure 25 may be provided on a battery cell 20, or two or more pressure relief structures 25 may be provided.

[0258] Since the side of the battery cell 20 with the pressure relief structure 25 usually has a certain space for gas discharge, placing the electronic control component 30 on the side of the battery cell 20 with the pressure relief structure 25 can improve the space utilization and reduce the negative impact of the electronic control component 30 on the energy density of the battery device 100. At the same time, in the event of thermal runaway of the battery cell 20, under the protection of the heat insulation plate 32 and the cavity 33, the high-temperature flue gas generated by thermal runaway is unlikely to damage the electronic control components inside the electronic control component 30.

[0259] This embodiment provides some installation positions for the electronic control components 30. Under the premise that the heat insulation plate 32 and the cavity 33 have a good heat insulation effect, this setting can reduce the space requirement of the electronic control components 30 for the battery device 100.

[0260] In some embodiments, the battery device 100 includes a housing 10, in which battery cells 20 are arranged in an array, and an electronic control component 30 is connected to the battery cells 20. The electronic control component 30 is a battery management system.

[0261] The power supply includes a bracket 31, with a circuit board on the side of the bracket 31 away from the battery cell 20, and a heat insulation plate 32 on the side of the bracket 31 facing the battery cell 20.

[0262] The bracket 31 includes a bracket body 311, with a circuit board disposed on the side of the bracket body 311 facing away from the battery cell 20. The bracket body 311 has a protruding structure 312 on the side facing the battery cell 20. The protruding structure 312 includes a plurality of first reinforcing ribs 3121 and a plurality of second reinforcing ribs 3122. The length direction of the first reinforcing ribs 3121 is parallel to the width direction Y of the electronic control component 30, and the first reinforcing ribs 3121 are arranged at intervals along the length direction X of the electronic control component 30. The length direction of the second reinforcing ribs 3122 is parallel to the length direction X of the electronic control component 30, and the second reinforcing ribs 3122 are arranged at intervals along the width direction Y of the electronic control component 30. The first reinforcing ribs 3121 and the second reinforcing ribs 3122 cooperate with the bracket body 311 and the partition to form a plurality of cavities 33.

[0263] Both the first reinforcing rib 3121 and the second reinforcing rib 3122 are provided with through holes 3123 so that each cavity 33 can be directly or indirectly connected to the space outside the electronic control component 30, so that air can be exchanged and circulated between each cavity 33 and the space outside the electronic control component 30.

[0264] The bracket 31 also includes a connecting structure 34, which includes a base 341 integrally formed with the bracket body 311. An adhesive layer 342 is connected to the side of the base 341 facing the heat insulation plate 32. The adhesive layer 342 is connected to the heat insulation plate 32 to fix the heat insulation plate 32 to the bracket body 311. There are multiple connecting structures 34, which are spaced apart along the edge of the bracket body 311. The connecting structure 34 is higher than the protruding structure 312 so that there is a gap between the heat insulation plate 32 and the protruding structure 312.

[0265] Secondly, some embodiments of this application also provide an energy storage device, including the battery device 100 provided in some embodiments of the first aspect.

[0266] An energy storage device includes one or more battery clusters to increase its voltage and capacity. A battery cluster may include multiple individual battery cells 20, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the clusters are connected in parallel to increase the capacity of the energy storage device.

[0267] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices.

[0268] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0269] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0270] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0271] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 100 via piping to regulate the temperature of the individual battery cells 20.

[0272] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0273] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as an Insulation Monitoring Module (IMM), a Master Battery Management Unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0274] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0275] As an example, a power distribution module can be used to distribute power to modules in an energy storage device that require electricity.

[0276] Thirdly, some examples of this application also provide an electrical device, namely, a battery device 100 provided in some embodiments of the first aspect; or an energy storage device provided in some embodiments of the second aspect. The battery device 100 is used to store or provide electrical energy.

[0277] 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 by, include: Box; The battery cell is housed within the casing; An electronic control assembly is housed in the housing. The electronic control assembly includes a bracket and electronic control components. The bracket includes a bracket body, a protruding structure connected to the side of the bracket body facing the battery cell, and the electronic control components provided on the side of the bracket body away from the battery cell. The electronic control assembly also includes a heat insulation plate disposed on the side of the bracket body facing the battery cell, and the heat insulation plate, the bracket body and the protruding structure form a cavity.

2. The battery device according to claim 1, characterized by The protruding structure includes a first reinforcing rib connected to the main body of the support.

3. The battery device of claim 2, wherein, The protruding structure also includes a second reinforcing rib connected to the main body of the support, the second reinforcing rib intersecting with the first reinforcing rib.

4. The battery device of claim 3, wherein The number of the first reinforcing ribs is at least two, and each of the first reinforcing ribs is arranged at intervals along the first direction; The number of the second reinforcing ribs is at least two, and each of the second reinforcing ribs is arranged at intervals along the second direction, which is at an angle to the first direction.

5. The battery device of claim 4, wherein, The first reinforcing rib and / or the second reinforcing rib can divide the cavity into at least two sub-cavities; The first reinforcing rib and / or the second reinforcing rib are provided with through holes to connect the sub-cavities on both sides of the through holes, and to connect any of the cavities to the space outside the electronic control assembly.

6. The battery device of claim 5, wherein Along the length of the first or second reinforcing rib, the ratio of the size of the corresponding through hole to the size of the adjacent cavity ranges from 0.25 to 0.

4.

7. The battery device according to any one of claims 1 to 6, wherein The electrical control component further includes a connection structure, which is disposed between the heat insulation plate and the support body, and the heat insulation plate is connected to the connection structure. The heat insulation plate is connected to at least a portion of the protruding structure, and / or the heat insulation plate is spaced apart from at least a portion of the protruding structure.

8. The battery device of claim 7, wherein, The area of ​​the connecting structure connected to the heat insulation plate is larger than the area of ​​the protruding structure facing the heat insulation plate.

9. The battery device according to claim 7 or 8, characterized by In the arrangement direction of the support body and the heat insulation plate, the size of the connecting structure is larger than the size of the protruding structure.

10. The battery device of claim 9, wherein, The connection structure includes a base, which is connected to the support body; The connection structure also includes an adhesive layer, one side of which is connected to the base and the other side of which is connected to the heat insulation plate.

11. The battery device of claim 10, wherein, In the arrangement direction of the support body and the heat insulation plate, the size of the base is less than or equal to the size of the protruding structure.

12. The battery device of claim 11, wherein, In the arrangement direction of the support body and the heat insulation plate, the difference between the size of the base and the size of the protruding structure is in the range of 1mm to 2mm.

13. The battery device of claim 9, wherein, The connection structure includes an adhesive layer, one side of which is connected to the support body and the other side of which is connected to the heat insulation plate.

14. The battery device of any one of claims 10-13, wherein, In the arrangement direction of the bracket body and the heat insulation plate, the size range of the adhesive layer is 1.2mm to 2.2mm.

15. The battery device of any one of claims 9-14, wherein, In the arrangement direction of the support body and the heat insulation plate, the difference between the size of the connecting structure and the size of the protruding structure is less than or equal to 0.2 mm.

16. The battery device of any one of claims 7-15, wherein, The number of connection structures is at least two.

17. The battery device of any one of claims 7-16, wherein, The connecting structure is located at the edge of the support body.

18. The battery device of any one of claims 1-17, wherein, In the arrangement direction of the support body and the heat insulation plate, the size of the heat insulation plate ranges from 0.5mm to 1mm.

19. The battery device of any one of claims 1-18, wherein, The electronic control assembly also includes a heat-conducting structure connected to the heat insulation plate, at least a portion of which is housed within the cavity.

20. The battery device of claim 19, wherein, The heat-conducting structure is connected to the housing.

21. The battery device of any one of claims 1-20, wherein, The material of the main body of the support includes at least one of plastic, resin, and rubber.

22. The battery device according to claim 21, characterized in that, The electronic control assembly also includes a housing connected to the main body of the bracket, and the electronic control components are located inside the housing; The outer shell and the main body of the support are integrally injection molded structures.

23. The battery device according to any one of claims 1-22, characterized in that, The electronic control component is located on the side of the battery cell that has a pressure relief structure.

24. An energy storage device comprising a battery device as claimed in any one of claims 1-23, characterized in that, The battery device is used to store or provide electrical energy.

25. An electrical appliance, characterized in that, Includes a battery device as described in any one of claims 1-23 or an energy storage device as described in claim 24, wherein the battery device is used to store or provide electrical energy.

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