Battery device and electric device

Abstract

The utility model is applicable to the technical field of batteries, and provides a battery device and a power utilization device, and the battery device comprises a box body which comprises a frame structure, a bottom plate, a top cover and an accommodating space; an energy bin and an electrical bin which are not communicated with each other are arranged in the accommodating space; the battery monomers are accommodated in the energy bin; the temperature control assembly comprises a first flow channel structure and a second flow channel structure which are not communicated with each other, the first flow channel structure is communicated with the electrical bin so that the heat exchange medium can enter and be discharged out of the electrical bin, and the second flow channel structure is communicated with the energy bin so that the heat exchange medium can enter and be discharged out of the energy bin. According to the technical scheme, the temperature control assembly is arranged and comprises the first flow channel structure and the second flow channel structure, so that the heat exchange medium is guided to enter the energy bin and the electrical bin through the first flow channel structure and the second flow channel structure correspondingly, and temperature control over the energy bin and the electrical bin is achieved; and the first flow channel structure and the second flow channel structure are not communicated with each other, so that the temperature of the electrical bin and the energy bin can be controlled according to different working conditions.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a battery 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] When the battery device is charged and discharged at high rates or under other charging and discharging conditions, the electrical structure in the battery device's electrical compartment is prone to generating a lot of heat. However, current battery devices have poor cooling effects on the electrical compartment and electrical structure. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and an electrical device that can improve the problem of poor cooling effect of current battery devices on the electrical compartment and its internal electrical structure.

[0005] In a first aspect, embodiments of this application provide a battery device, comprising:

[0006] The enclosure includes a frame structure, a bottom plate, and a top cover. The frame structure has a receiving space extending through a first direction. The bottom plate and the top cover are respectively connected to both sides of the frame structure along the first direction to enclose the receiving space. The receiving space contains an energy compartment and an electrical compartment that are not interconnected. The electrical compartment is used to house electronic devices. A battery cell is housed in the energy compartment. A temperature control component includes a first flow channel structure and a second flow channel structure that are not interconnected. The first flow channel structure is connected to the electrical compartment to allow heat exchange medium to enter the electrical compartment and immerse at least a portion of the electrical compartment. The second flow channel structure is connected to the energy compartment to allow heat exchange medium to enter the energy compartment and immerse at least a portion of the energy compartment.

[0007] In the technical solution of this embodiment, a temperature control component is provided, which includes a first flow channel structure and a second flow channel structure. The heat exchange medium is guided into the energy chamber and the electrical chamber through the first flow channel structure and the second flow channel structure, respectively, so as to achieve temperature control of the energy chamber and the electrical chamber. The first flow channel structure and the second flow channel structure are not connected to each other, so as to facilitate temperature control of the electrical chamber and the energy chamber according to different operating conditions.

[0008] In some embodiments, the first flow channel structure includes a first liquid inlet flow channel structure and a first liquid outlet flow channel structure. One end of the first liquid inlet flow channel structure is connected to the electrical compartment, and the other end of the first liquid inlet flow channel structure is used to connect to a heat exchange medium supply device located outside the housing, so that the heat exchange medium can enter the electrical compartment. One end of the first liquid outlet flow channel is connected to the electrical compartment, and the other end of the first liquid outlet flow channel extends outside the housing, so as to discharge the heat exchange medium in the electrical compartment.

[0009] The technical solution of this embodiment provides some specific structures of the first flow channel structure, which allows the heat exchange medium to enter the electrical compartment through the first liquid inlet flow channel structure to reduce the temperature inside the electrical compartment; it also allows the heat exchange medium to be discharged outside the electrical compartment through the first liquid outlet flow channel structure, thereby enabling the heat exchange medium to circulate and further reduce the temperature inside the electrical compartment. At the same time, it also allows the heat exchange medium to be completely discharged from the electrical compartment to reduce the weight of the battery device.

[0010] In some embodiments, the first liquid inlet channel structure includes a first liquid inlet channel formed within the frame structure, and the first liquid outlet channel structure includes a first liquid outlet channel formed within the frame structure.

[0011] The technical solution of this embodiment provides some specific structures of the first liquid inlet channel structure and the first liquid outlet channel structure, so that both the first liquid inlet channel structure and the first liquid outlet channel structure include channel structures formed within the frame structure, so as to facilitate the flow of heat exchange medium and reduce the occupation of the first liquid inlet channel structure and the first liquid outlet channel structure on the internal space of the battery device.

[0012] In some embodiments, the frame structure includes at least four profile beams connected end to end; the first liquid inlet channel structure includes a first liquid inlet pipe disposed in at least one profile beam, and the first liquid outlet channel structure includes a first liquid outlet pipe disposed in at least one profile beam.

[0013] The technical solution of this embodiment provides additional specific structures for the first liquid inlet channel structure and the first liquid outlet channel structure, such that the first liquid inlet channel structure and the first liquid outlet channel structure respectively include a first liquid inlet pipe and a first liquid outlet pipe, and the first liquid inlet pipe and the first liquid outlet pipe are arranged in the gap of the profile beam body, so as to facilitate the layout of the first liquid inlet channel structure and the first liquid outlet channel structure, and can reduce the occupation of the first liquid inlet channel structure and the first liquid outlet channel structure on the internal space of the battery device.

[0014] In some embodiments, the second flow channel structure includes a second liquid inlet flow channel structure and a second liquid outlet flow channel structure. One end of the second liquid inlet flow channel structure is connected to the energy chamber, and the other end of the second liquid inlet flow channel structure is used to connect to a heat exchange medium supply device located outside the chamber so that the heat exchange medium can enter the energy chamber. One end of the second liquid outlet flow channel structure is connected to the energy chamber, and the other end of the second liquid outlet flow channel structure extends outside the chamber so as to discharge the heat exchange medium inside the energy chamber.

[0015] The technical solution of this embodiment provides some specific structures of the second flow channel, which allows the heat exchange medium to enter the energy chamber through the second liquid inlet flow channel structure to reduce the temperature inside the energy chamber; it also allows the heat exchange medium to be discharged outside the energy chamber through the second liquid outlet flow channel structure, thereby enabling the heat exchange medium to circulate and further reduce the temperature inside the energy chamber.

[0016] In some embodiments, the second liquid inlet channel structure includes a plate connected to the frame structure, the plate dividing the energy chamber into at least two sub-energy chambers; the plate is provided with a second liquid inlet channel, one end of the second liquid inlet channel is connected to the external environment outside the chamber, and the other end of the second liquid inlet channel is connected to each sub-energy chamber.

[0017] The technical solution of this embodiment provides some specific structures of the second liquid inlet channel structure, which includes a plate body and a second liquid inlet channel inside the plate body, so that the heat exchange medium can enter each sub-energy chamber through the second liquid inlet channel.

[0018] In some embodiments, a partition plate is provided inside the plate to divide the second liquid inlet channel into at least two sub-channels. One end of each sub-channel is connected to the external environment outside the box, and the other end of each sub-channel is connected to different sub-energy chambers.

[0019] In the technical solution of this embodiment, a partition plate is provided in the plate body to form at least two sub-channels, so that the heat exchange medium can flow to its respective energy chamber through each sub-channel.

[0020] In some embodiments, the plate body has an outlet hole on the side facing each sub-energy cell that is connected to the second liquid inlet channel; the height of the outlet hole gradually decreases along the flow path of the heat exchange medium in the second liquid inlet channel.

[0021] In the technical solution of this embodiment, the height of the liquid outlet gradually decreases along the flow direction of the heat exchange medium, so that the heat exchange medium can have a larger flow rate at the end of its flow path, thereby enabling the heat exchange medium to exchange heat more evenly on different parts of the energy chamber and improving temperature uniformity.

[0022] In some embodiments, the second liquid outlet channel structure includes a second liquid outlet channel formed within the frame structure.

[0023] The technical solution of this embodiment provides some specific structures of the second liquid outlet flow channel structure, such that the second liquid outlet flow channel structure includes a channel structure formed within the frame structure, so as to facilitate the flow of heat exchange medium and reduce the occupation of the internal space of the battery device by the second liquid outlet flow channel structure.

[0024] In some embodiments, the frame structure includes at least four profile beams connected end to end; the second liquid outlet channel structure includes a second liquid outlet pipe disposed within at least one profile beam.

[0025] The technical solution of this embodiment provides some specific structures of the second liquid outlet channel structure, such that the second liquid outlet channel structure includes a second liquid outlet pipe, and the second liquid outlet pipe is set in the gap of the profile beam, so as to facilitate the layout of the second liquid outlet channel structure and reduce the occupation of the second liquid outlet channel structure on the internal space of the battery device.

[0026] In some embodiments, the temperature control component further includes a liquid inlet and a liquid outlet connected to the housing; a first flow channel structure is connected to the liquid inlet and the liquid outlet to allow the heat exchange medium to enter or exit the electrical compartment; and a second flow channel structure is connected to the liquid inlet and the liquid outlet to allow the heat exchange medium to enter or exit the energy compartment.

[0027] In the technical solution of this embodiment, a liquid inlet and a liquid outlet are provided, and the first flow channel structure and the second flow channel structure are connected to the liquid inlet and the liquid outlet to facilitate the circulation of the heat exchange medium in the energy chamber and the electrical chamber.

[0028] In some embodiments, there is one liquid inlet port, and both the first flow channel structure and the second flow channel structure are connected to the liquid inlet port.

[0029] In this embodiment, the number of liquid inlets is one, which simplifies the structure of the external pipeline corresponding to the liquid inlet, reduces the difficulty of battery device layout, and reduces space occupation.

[0030] In some embodiments, a buffer pad is provided between two adjacent battery cells.

[0031] In the technical solution of this embodiment, a buffer pad is provided between two adjacent battery cells to reduce the risk of mutual expansion and compression between the two adjacent battery cells during charging and discharging.

[0032] In some embodiments, at least two buffer pads are provided between two adjacent battery cells, and the at least two buffer pads are spaced apart to form a flow channel for heat exchange medium to circulate between two adjacent buffer pads.

[0033] In the technical solution of this embodiment, at least two buffer pads are provided between two adjacent battery cells, and the buffer pads are spaced apart to form a flow channel between two adjacent battery cells that allows the heat exchange medium to flow, thereby enabling the heat exchange medium to better contact and exchange heat with each surface of the battery cell, and further improving the heat exchange effect of the heat exchange medium.

[0034] In some embodiments, a battery cell includes two first sides and two second sides disposed on its periphery, the two first sides being disposed opposite to each other, the two second sides being disposed opposite to each other, and the area of ​​the first sides being larger than the area of ​​the second sides; a buffer pad is disposed between the first sides of two adjacent battery cells.

[0035] The technical solution of this embodiment provides some specific locations of the buffer pads. The buffer pads are placed between the first sides of two adjacent battery cells, and the first side is the side with a larger area of ​​the battery cell, so that the buffer pads can better reduce the risk of mutual expansion and compression between the two adjacent battery cells during charging and discharging.

[0036] Secondly, embodiments of this application also provide an electrical device, including the battery device provided in some embodiments of the first aspect.

[0037] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0038] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0039] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0040] Figure 2 This is an exploded view of the battery device provided in some embodiments of this application;

[0041] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application;

[0042] Figure 4 This is a top view of a battery device provided in some embodiments of this application after the top cover has been removed;

[0043] Figure 5This is a perspective view of the box body after the top cover has been removed, provided in some embodiments of this application;

[0044] Figure 6 This is a cross-sectional schematic diagram of the housing provided in some embodiments of this application;

[0045] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle;

[0046] Figure 8 for Figure 6 A magnified view of a portion of point C in the middle;

[0047] Figure 9 for Figure 6 A magnified view of a portion of point B in the middle;

[0048] Figure 10 The diagram shows the structure of a battery cell and a buffer pad provided in some embodiments of this application.

[0049] The markings in the diagram mean:

[0050] 1000, vehicles;

[0051] 100. Battery device;

[0052] 10. Container body; 11. Frame structure; 12. Base plate; 13. Top cover; 14. Storage space; 141. Energy chamber; 1411. Sub-energy chamber; 142. Electrical chamber;

[0053] 20. Battery cell; 21. Housing; 211. First side; 212. Second side; 22. End cap; 23. Electrode assembly; 24. Electrode terminal;

[0054] 30. Temperature control component; 31. First flow channel structure; 311. First liquid inlet flow channel structure; 3111. First liquid inlet flow channel; 312. First liquid outlet flow channel structure; 3121. First liquid outlet flow channel; 32. Second flow channel structure; 321. Second liquid inlet flow channel structure; 3211. Plate; 32111. Partition plate; 3212. Second liquid inlet flow channel; 32121. Sub-flow channel; 3213. Liquid outlet hole; 322. Second liquid outlet flow channel structure; 3221. Second liquid outlet flow channel; 33. Liquid inlet interface; 34. Liquid drain interface;

[0055] 40. Cushioning pad;

[0056] 200. Motor;

[0057] 300. Controller. Detailed Implementation

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0063] 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).

[0064] 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.

[0065] 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.

[0066] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied 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 battery device applications, market demand is also constantly increasing.

[0067] During the charge-discharge cycle of a battery device, especially under high-rate charge-discharge conditions, individual battery cells generate a large amount of heat. At the same time, some electronic components of the battery device (such as fuses, sensors, sampling resistors, busbars, etc.) also generate a large amount of heat. The operating environment temperature required for the efficient operation of individual battery cells and these electronic components is usually low (e.g., 25°C). Therefore, it is necessary to control the temperature of individual battery cells and these electronic components during the charge-discharge cycle of the battery device to reduce the risk of efficiency degradation or failure of individual battery cells and these electronic components.

[0068] Current battery devices typically incorporate cooling plates or other temperature control structures to regulate the temperature of individual battery cells, enabling them to operate within a suitable ambient temperature range. However, current battery devices have poor temperature control capabilities within the electrical compartment. When the temperature inside the electrical compartment is high, it is difficult to lower the temperature, leading to decreased efficiency or even failure of the electronic components within the compartment.

[0069] To improve the poor temperature control in the electrical compartment, one approach is to extend a portion of the cold plate into the compartment to cool the electronic components. However, in this approach, the cold plate cannot easily reach all the electronic components, resulting in limited cooling effect.

[0070] Based on the above considerations, in order to improve the poor cooling effect of the current battery device on the electrical compartment and its internal electrical structure, this application provides a battery device in which the temperature control component includes a first flow channel structure and a second flow channel structure. The first flow channel structure is used to introduce a heat exchange medium into the energy compartment, and the second flow channel structure is used to introduce a heat exchange medium into the electrical compartment. At the same time, the first flow channel structure and the second flow channel structure are not connected to each other.

[0071] In this battery device, a first flow channel allows the heat exchange medium to enter the energy chamber, enabling the heat exchange medium to immerse at least a portion of the battery cells, thereby better controlling the temperature of the battery cells. A second flow channel allows the heat exchange medium to enter the electrical chamber, enabling the heat exchange medium to directly contact the electrical components and immerse at least a portion of the electronic components, thereby better controlling the temperature of the battery cells. At the same time, the first and second flow channel structures are not interconnected, so as to facilitate temperature control of the electrical chamber and the energy chamber according to different operating conditions.

[0072] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery device as an energy storage element. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0073] 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.

[0074] refer to Figure 1 , Figure 1This 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 is installed inside the vehicle 1000, and the battery can be located at the bottom, front, or rear of the vehicle 1000. The battery can be used to power the vehicle 1000; for example, the battery 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 to supply power to the motor 200, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0075] In some embodiments of this application, the battery 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.

[0076] refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 20, which are connected in series, parallel, or mixed connection via a busbar.

[0077] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 20.

[0078] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 20 into a single module. As an example, the battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0079] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 10 and one or more battery cell assemblies housed in the housing 10.

[0080] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 10 by fixing the battery module in the housing 10.

[0081] As an example, the battery cell assembly can also be housed in the housing 10 by directly fixing multiple battery cells 20 to the housing 10.

[0082] As an example, the housing 10 may include a first housing 10 and a second housing 10. The first housing 10 and the second housing 10 are fastened together to form a closed space inside the housing 10 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 10 may be a top cover 13 or a bottom plate 12.

[0083] As an example, the housing 10 may include a top cover 13, a frame, and a bottom plate 12. The top cover 13 and the bottom plate 12 are respectively connected to the frame, so that the interior of the housing 10 forms a closed space to accommodate the battery cell assembly.

[0084] 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.

[0085] 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 that makes up a battery. As shown, the battery cell 20 includes an end cap 22, a housing 21, an electrode assembly 23, and other functional components.

[0086] 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 to output or input electrical energy to battery cell 20. In some embodiments, end cap 22 can also be provided with a pressure relief mechanism 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.

[0087] 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.

[0088] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 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, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 24 to form a current loop.

[0089] Firstly, reference Figure 4 , Figure 5 This application provides a battery device 100, including a housing 10, a battery cell 20, and a temperature control component. The housing 10 includes a frame structure 11, a bottom plate 12, and a top cover 13. The frame structure 11 has a through-space 14 extending along a first direction. The bottom plate 12 and the top cover 13 are respectively connected to both sides of the frame structure 11 along the first direction to enclose the through-space 14. The through-space 14 contains a non-communicating energy compartment 141 and an electrical compartment 142. The electrical compartment 142 is used to house electronic devices. The battery cell 20 is housed in the energy compartment 141. The temperature control component 30 includes a non-communicating first flow channel structure 31 and a second flow channel structure 32. The first flow channel structure 31 is connected to the electrical compartment 142 to allow heat exchange medium to enter and exit the electrical compartment 142, and the second flow channel structure 32 is connected to the energy compartment 141 to allow heat exchange medium to enter and exit the energy compartment 141.

[0090] In the figure, the X-axis is the length direction of the battery device 100, the Y-axis is the width direction of the battery device 100, and the Z-axis is the height direction of the battery device 100.

[0091] The housing 10 refers to the structure in the battery device 100 that provides a space 14 for housing the battery cell 20 and other structures. The battery cell 20 is housed in the housing 10. The housing 10 can be prismatic, cylindrical, or other shapes. The material of the housing 10 can be metal, plastic, or other materials.

[0092] The frame structure 11 refers to the structure in the housing 10 used to provide side protection for the battery cell assembly. The frame structure 11 may include multiple side beams connected end to end. The frame structure 11 may be a quadrilateral square frame structure, or a pentagonal, hexagonal or other shaped frame structure. The beams in the frame structure 11 may be box beams, or I-beams or other shaped beam structures. The material of the frame structure 11 may include plastic or other materials.

[0093] The frame structure 11 has a receiving space 14 that extends through in a first direction. The receiving space 14 is the space for accommodating the battery cell 20 and other structures of the battery device 100. The receiving space 14 can be a prism-shaped space structure, a cylindrical space structure, or a space structure of other shapes. The shape of the receiving space 14 can also be set according to the shape of the frame structure 11. The receiving space 14 extends through the frame structure 11, that is, the frame structure 11 can be a ring structure that surrounds the receiving space 14.

[0094] The first direction can be the height direction Z of the battery device 100, or it can be other directions; for example, the first direction is the height direction Z of the battery device 100.

[0095] The base plate 12 refers to the structure in the housing 10 used to support the battery cell assembly or other structures. The base plate 12 can be a circular plate structure, a square plate structure, or a plate structure of other shapes. The base plate 12 is connected to the frame structure 11. The base plate 12 can be connected to the frame structure 11 by welding, bonding, screwing, or other methods. The base plate 12 can also be integrally formed with the frame structure 11. The material of the base plate 12 can include metal, plastic, or other materials. The material of the base plate 12 can be the same as or different from the material of the frame structure 11.

[0096] The top cover 13 refers to the structure in the housing 10 used to enclose the storage space 14. The top cover 13 can be a circular plate structure, a square plate structure, or a plate structure of other shapes. The top cover 13 can also be a box-shaped structure or a structure of other shapes with one end open. The top cover 13 is connected to the frame structure 11. The top cover 13 can be connected to the frame structure 11 by welding, bonding, screwing, or other methods. The top cover 13 can also be integrally formed with the frame structure 11. The material of the top cover 13 can include metal, plastic, or other materials. The material of the top cover 13 can be the same as or different from the material of the frame structure 11.

[0097] The bottom plate 12 and the top cover 13 are respectively connected to both sides of the frame structure 11 along the first direction. At this time, the bottom plate 12 and the top cover 13 can close the accommodating space 14 so that the accommodating space 14 becomes a closed spatial structure. When the housing 10 includes a first housing 10 and a second housing 10, the bottom plate 12 can be connected to the frame structure 11 and serve as the first housing 10, and the top cover 13 can serve as the second housing 10. When the battery device 100 is installed on the vehicle 1000, the top cover 13 can also serve as the floor structure of the vehicle 1000.

[0098] A battery cell 20 refers to the smallest unit that makes up the battery device 100. The number of battery cells 20 can be one, two or more. When the number of battery cells 20 is at least two, the battery cells 20 can be connected in series, in parallel or in a mixed configuration. The battery cells 20 can be arranged in one direction or in an array in two different directions. The battery cells 20 can be fixed and constrained by straps, plates 3211 or other structures. The battery cells 20 can also be directly placed in the housing space 14 of the housing 10.

[0099] The containment space 14 includes an energy chamber 141, which refers to the spatial structure within the containment space 14 that houses the battery cells 20. The energy chamber 141 can be a prism-shaped spatial structure, a cylindrical spatial structure, or a spatial structure of other shapes. The energy chamber 141 can be a spatial structure set within the containment space 14, or it can be a spatial structure enclosed by structural components. For example, the energy chamber 141 is a spatial structure enclosed by a beam, a frame structure 11, a top cover 13, and a bottom plate 12.

[0100] The accommodating space 14 also includes an electrical compartment 142. The electrical compartment 142 refers to the spatial structure within the accommodating space 14 that houses electronic devices, including fuses, sensors, sampling resistors, busbars, etc. The electrical compartment 142 can be a prismatic, cylindrical, or other shaped spatial structure. It can be a spatial structure set within the accommodating space 14 or a spatial structure enclosed by structural components. For example, the electrical compartment 142 is a spatial structure enclosed by a beam, a frame structure 11, a top cover 13, and a bottom plate 12.

[0101] The temperature control component 30 refers to the structure in the battery device 100 used to control the temperature of the battery cells 20 and other structures. The temperature control component 30 can control the temperature of each battery cell 20 in the energy compartment 141, and also control the temperature of each electronic device in the electrical compartment 142.

[0102] The first flow channel structure 31 refers to the structure in the temperature control component 30 used to control the temperature in the electrical compartment 142. The first flow channel structure 31 can transport the heat exchange medium into the electrical compartment 142 and immerse at least a portion of the electrical compartment 142, or it can transport the heat exchange medium in the electrical compartment 142 to the external environment outside the housing 10. The heat exchange medium may include coolant, such as fluorinated liquid, silicone oil-based coolant, white oil-based coolant, or other coolant that can exchange heat with each electronic device and is not likely to cause damage to the electronic device.

[0103] For example, the heat exchange medium can be a coolant, which should have the characteristics of insulation, corrosion resistance and high thermal conductivity. The coolant can be a hydrocarbon, fluorinated liquid or other suitable coolant.

[0104] The first flow channel structure 31 may include a channel structure formed in the frame structure 11, the bottom plate 12 or the top cover 13, or a pipe structure or other structure capable of conveying heat exchange medium provided in the housing 10; one end of the first flow channel structure 31 is connected to the electrical compartment 142, and the other end is connected to other structures outside the housing 10 (such as heat exchange medium storage devices, pressurizing devices, etc.), so that the heat exchange medium can enter the electrical compartment 142 through the first flow channel structure 31, and also facilitate the discharge of the heat exchange medium in the electrical compartment 142 to the outside of the housing 10 through the first flow channel structure 31.

[0105] The heat exchange medium can enter the electrical chamber 142 and then be discharged under the action of the first flow channel structure 31, so as to circulate and better reduce the temperature inside the electrical chamber 142; the heat exchange medium can also remain inside the electrical chamber 142 after entering it.

[0106] When a heat exchange medium is present in the electrical compartment 142, the heat exchange medium can either completely fill the electrical compartment 142 or only fill part of the space in the electrical compartment 142; it is understandable that when the temperature inside the electrical compartment 142 is relatively suitable, there may be no heat exchange medium inside the electrical compartment 142.

[0107] The second flow channel structure 32 refers to the structure in the temperature control component 30 used to control the temperature in the energy chamber 141. The second flow channel structure 32 can transport the heat exchange medium into the energy chamber 141 and immerse at least a portion of the energy chamber 141, or it can transport the heat exchange medium in the energy chamber 141 to the external environment outside the housing 10. The heat exchange medium may include coolant, such as fluorinated liquid, silicone oil-based coolant, white oil-based coolant, or other coolant that can exchange heat with each battery cell 20 and electrical structure and is not likely to cause damage to the battery cell 20 and electrical structure.

[0108] The second flow channel structure 32 may include a channel structure formed in the frame structure 11, the bottom plate 12 or the top cover 13, or a pipe structure or other structure capable of transporting heat exchange medium provided in the housing 10; one end of the second flow channel structure 32 is connected to the energy chamber 141, and the other end is connected to other structures outside the housing 10 (such as heat exchange medium storage devices, pressurization devices, etc.), so that the heat exchange medium can enter the energy chamber 141 through the second flow channel structure 32, and also facilitate the discharge of the heat exchange medium in the energy chamber 141 to the outside of the housing 10 through the second flow channel structure 32.

[0109] The heat exchange medium can enter the energy chamber 141 and then be discharged under the action of the second flow channel structure 32, so as to circulate and better reduce the temperature inside the energy chamber 141; the heat exchange medium can also remain inside the energy chamber 141 after entering it.

[0110] When a heat exchange medium is present in the energy chamber 141, the heat exchange medium can either completely fill the energy chamber 141 or only fill a portion of the space in the energy chamber 141.

[0111] The first flow channel structure 31 and the second flow channel structure 32 are not interconnected, so that the first flow channel structure 31 and the second flow channel structure 32 can independently control the temperature of the corresponding electrical compartment 142 and energy compartment 141. For example, during the charge and discharge cycle of the battery device 100, the heat exchange medium can enter and exit the energy compartment 141 through the second flow channel structure 32, so that the heat exchange medium circulates through the second flow channel structure 32, thereby controlling the temperature inside the battery cell 20 and the energy compartment 141; at the same time, the first flow channel structure 31 can prevent the heat exchange medium from entering the electrical compartment 142.

[0112] When the battery device 100 is charged and discharged at high rates, the electronic components in the electrical compartment 142 will generate a lot of heat. However, the current battery device 100 has poor temperature control capabilities for the electrical compartment 142. When the temperature inside the electrical compartment 142 is high, it is difficult to lower the temperature, which can easily lead to a decrease in efficiency or even failure of the electronic components inside the electrical compartment 142. Meanwhile, when the battery device 100 is working normally, the temperature inside the electrical compartment 142 is usually quite suitable and does not require cooling.

[0113] Accordingly, a first flow channel structure 31 is provided to guide the heat exchange medium into the electrical chamber 142 and achieve temperature control of the electrical chamber 142; the first flow channel structure 31 and the second flow channel structure 32 are not connected to each other, so as to enable independent temperature control of the electrical chamber 142 and the energy chamber 141 according to different operating conditions.

[0114] Without the need for cooling or temperature control of the electrical compartment 142, the electrical compartment 142 can be completely filled or partially filled with heat exchange medium, or the heat exchange medium can be completely discharged.

[0115] Understandably, the temperature information inside the electrical compartment 142 can be collected by the Battery Management System (BMS) and used to control the supply status of the heat exchange medium to the external devices, or to control the on / off state of the first flow channel structure 31, thereby controlling the heat exchange medium to enter or exit the electrical compartment 142.

[0116] It is understandable that a temperature sensor can be installed inside the electrical compartment 142 to collect temperature information within the electrical compartment 142.

[0117] For example, if the temperature inside the electrical compartment 142 is detected to be higher than a preset temperature, the coolant can enter the electrical compartment 142 through the first flow channel structure 31 and be discharged through the first flow channel structure 31 after flowing through the electronic components, so as to circulate the coolant and reduce the temperature of the electrical compartment 142; if the temperature inside the electrical compartment 142 drops to another preset temperature, the coolant can be discharged from the electrical compartment 142 through the first flow channel structure 31, so that no coolant accumulates in the electrical compartment 142.

[0118] In this embodiment, a temperature control component 30 is provided, which includes a first flow channel structure 31 and a second flow channel structure 32. The first flow channel structure 31 and the second flow channel structure 32 guide the heat exchange medium into the energy chamber 141 and the electrical chamber 142 respectively, so as to achieve temperature control of the energy chamber 141 and the electrical chamber 142. The first flow channel structure 31 and the second flow channel structure 32 are not connected to each other, so as to facilitate temperature control of the electrical chamber 142 and the energy chamber 141 according to different operating conditions.

[0119] refer to Figures 5 to 8 In some embodiments, the first flow channel structure 31 includes a first liquid inlet flow channel structure 311 and a first liquid outlet flow channel structure 312. One end of the first liquid inlet flow channel structure 311 is connected to the electrical compartment 142, and the other end of the first liquid inlet flow channel structure 311 is used to connect to a heat exchange medium supply device located outside the housing 10 so that the heat exchange medium can enter the electrical compartment 142. One end of the first liquid outlet flow channel 3121 is connected to the electrical compartment 142, and the other end of the first liquid outlet flow channel 3121 is connected to the external environment outside the housing 10 so as to discharge the heat exchange medium in the electrical compartment 142.

[0120] The first liquid inlet channel structure 311 refers to the structure in the first channel structure 31 used to allow the heat exchange medium to enter the electrical chamber 142. The first liquid inlet channel structure 311 can transport the heat exchange medium into the electrical chamber 142. The first liquid inlet channel structure 311 may include a channel structure formed in the frame structure 11, the bottom plate 12 or the top cover 13, or it may include a pipe structure or other structure capable of transporting the heat exchange medium located in the housing 10. One end of the first liquid inlet channel structure 311 is connected to the electrical chamber 142, and the other end is used to connect to a heat exchange medium supply device (such as a heat exchange medium storage device, a pressurizing device, etc.) located outside the housing 10, so that the heat exchange medium can enter the electrical chamber 142 through the first liquid inlet channel structure 311.

[0121] The first liquid outlet flow channel structure 312 refers to the structure in the first flow channel structure 31 used to discharge the heat exchange medium in the battery compartment. The first liquid outlet flow channel structure 312 can discharge the heat exchange medium to the outside of the electrical compartment 142, such as to external storage devices, pressurizing devices, etc., so that the discharged heat exchange medium can re-enter the first liquid inlet flow channel structure 311. The first liquid outlet flow channel structure 312 may include a channel structure formed in the frame structure 11, the bottom plate 12 or the top cover 13, or a pipe structure or other structure capable of transporting heat exchange medium provided in the housing 10. One end of the first liquid outlet flow channel structure 312 is connected to the electrical compartment 142, and the other end extends to the outside of the housing 10 to connect with other structures outside the housing 10 (such as storage devices for heat exchange medium, pressurizing devices, etc.), so that the heat exchange medium can be discharged from the electrical compartment 142 through the first liquid outlet flow channel structure 312.

[0122] For example, when the temperature inside the electrical compartment 142 is high, the heat exchange medium can enter the electrical compartment 142 through the first liquid inlet channel structure 311. The heat exchange medium can fill the electrical compartment 142 and immerse each electronic component to reduce the temperature of the battery compartment and each electronic component. The heat exchange medium inside the electrical compartment 142 can also be discharged outside the electrical compartment 142 through the first liquid outlet channel structure 312. The entry and discharge of the heat exchange medium can be carried out simultaneously so that the heat exchange medium can circulate, thereby better reducing the temperature of the electrical compartment 142 and each electronic component.

[0123] For example, when the temperature inside the electrical compartment 142 is suitable, the heat exchange medium inside the electrical compartment 142 can be discharged outside the electrical compartment 142 through the first liquid outlet channel structure 312, so that no heat exchange medium remains inside the electrical compartment 142, thereby reducing the weight of the entire battery device 100.

[0124] This embodiment provides specific structures for the first flow channel structure 31, allowing the heat exchange medium to enter the electrical chamber 142 through the first liquid inlet flow channel structure 311 to reduce the temperature inside the electrical chamber 142; it also allows the heat exchange medium to be discharged outside the electrical chamber 142 through the first liquid outlet flow channel structure 312, thereby enabling the heat exchange medium to circulate and further reduce the temperature inside the electrical chamber 142, while also allowing the heat exchange medium to be completely discharged from the electrical chamber 142 to reduce the weight of the battery device 100.

[0125] refer to Figures 5 to 8 In some embodiments, the first liquid inlet channel structure 311 includes a first liquid inlet channel 3111 formed within the frame structure 11, and the first liquid outlet channel structure 312 includes a first liquid outlet channel 3121 formed within the frame structure 11.

[0126] The first liquid inlet channel 3111 refers to the channel structure formed within the frame structure 11. The first liquid inlet channel 3111 can be formed within the frame structure 11 by means of grooving, drilling, etc., or by embedding pipes or other means. The first liquid inlet channel 3111 can extend along a straight line or bend along a reference straight line. The cross-sectional shape of the first liquid inlet channel 3111 can be circular, square, or other shapes.

[0127] One end of the first liquid inlet channel 3111 is connected to the electrical chamber 142, and the other end is connected to other structures outside the housing 10 (such as storage devices for the heat exchange medium, pressurizing devices, etc.), so that the heat exchange medium can enter the electrical chamber 142 through the first liquid inlet channel 3111.

[0128] The first liquid outlet channel 3121 refers to the channel structure formed within the frame structure 11. The first liquid outlet channel 3121 can be formed within the frame structure 11 by means of grooving, drilling, etc., or by embedding pipes or other means. The first liquid outlet channel 3121 can extend along a straight line or bend along a reference straight line. The cross-sectional shape of the first liquid outlet channel 3121 can be circular, square, or other shapes.

[0129] One end of the first liquid outlet channel 3121 is connected to the electrical chamber 142, and the other end is connected to other structures outside the housing 10 (such as storage devices for the heat exchange medium, pressurizing devices, etc.), so that the heat exchange medium in the electrical chamber 142 can be discharged through the first liquid outlet channel 3121.

[0130] This embodiment provides specific structures for the first liquid inlet channel structure 311 and the first liquid outlet channel structure 312, such that both the first liquid inlet channel structure 311 and the first liquid outlet channel structure 312 include channel structures formed within the frame structure 11, so as to facilitate the flow of heat exchange medium and reduce the occupation of the first liquid inlet channel structure 311 and the first liquid outlet channel structure 312 on the internal space of the battery device 100.

[0131] In some embodiments, the frame structure 11 includes at least four profile beams connected end to end; the first liquid inlet channel structure 311 includes a first liquid inlet pipe disposed in at least one profile beam, and the first liquid outlet channel structure 312 includes a first liquid outlet pipe disposed in at least one profile beam.

[0132] Profiles refer to structural components with specific cross-sectional shapes formed by processes such as rolling, extrusion, or casting. Profile beams refer to the main structures that make up the frame structure 11. There are cavities inside the profile beams. There can be four, five, or more profile beams. Each profile beam can be connected end to end to form the frame structure 11. Each profile beam can be connected end to end by welding, bonding, or other methods.

[0133] The first inlet pipe refers to the pipe structure in the first inlet flow channel structure 311 used to transport the heat exchange medium to the electrical compartment 142. The first inlet pipe can extend in a straight line or bend along a reference straight line. The first inlet pipe can be a complete pipe or can be formed by connecting multiple pipes. The cross-sectional shape of the first inlet pipe can be circular, square or other shapes. The material of the first inlet pipe can include metal, plastic or other materials.

[0134] One end of the first inlet pipe is connected to the electrical compartment 142, and the other end is connected to other structures outside the housing 10 (such as storage devices for the heat exchange medium, pressurizing devices, etc.), so that the heat exchange medium can enter the electrical compartment 142 through the first inlet pipe.

[0135] The first liquid inlet pipe is located inside the profile beam. Since there is a cavity inside the profile beam, the first liquid inlet pipe is located inside the profile beam. The cavity inside the profile beam is used to arrange the first liquid inlet pipe, thereby reducing the space occupied by the first liquid inlet pipe in the accommodating space 14. This not only realizes the arrangement of the first liquid inlet pipe, but also reduces the negative impact of the first liquid inlet pipe on the energy density of the battery device 100.

[0136] When the first liquid inlet pipe is located inside the profile beam, the first liquid inlet pipe can be connected to the profile beam by welding, bonding, screwing or other means. The first liquid inlet pipe can also be indirectly connected to the profile beam by a support or other structure.

[0137] The first outlet pipe refers to the pipe structure in the first inlet flow channel structure 311 used to transport the heat exchange medium in the electrical compartment 142 to the outside of the box 10. The first outlet pipe can extend in a straight line or bend along a reference straight line. The first outlet pipe can be a complete pipe or can be formed by connecting multiple pipes. The cross-sectional shape of the first outlet pipe can be circular, square or other shapes. The material of the first outlet pipe can include metal, plastic or other materials.

[0138] One end of the first liquid outlet pipe is connected to the electrical compartment 142, and the other end is connected to other structures outside the housing 10 (such as storage devices for the heat exchange medium, pressurizing devices, etc.), so that the heat exchange medium in the electrical compartment 142 can be discharged through the first liquid outlet channel 3121.

[0139] The first liquid outlet pipe is located inside the profile beam. Since there is a cavity inside the profile beam, the first liquid outlet pipe is located inside the profile beam. The cavity inside the profile beam is used to arrange the first liquid outlet pipe, thereby reducing the occupation of the first liquid outlet pipe on the accommodating space 14. This not only realizes the arrangement of the first liquid outlet pipe, but also reduces the negative impact of the first liquid outlet pipe on the energy density of the battery device 100.

[0140] When the first outlet pipe is located inside the profile beam, the first outlet pipe can be connected to the profile beam by welding, bonding, screwing or other means. The first outlet pipe can also be indirectly connected to the profile beam by a support or other structure.

[0141] This embodiment provides additional specific structures for the first liquid inlet channel structure 311 and the first liquid outlet channel structure 312, such that the first liquid inlet channel structure 311 and the first liquid outlet channel structure 312 respectively include a first liquid inlet pipe and a first liquid outlet pipe, and the first liquid inlet pipe and the first liquid outlet pipe are arranged in the gap of the profile beam, so as to facilitate the arrangement of the first liquid inlet channel structure 311 and the first liquid outlet channel structure 312, and reduce the occupation of the first liquid inlet channel structure 311 and the first liquid outlet channel structure 312 on the internal space of the battery device 100.

[0142] refer to Figure 5 , Figure 6 , Figure 9 In some embodiments, the second flow channel structure 32 includes a second liquid inlet flow channel structure 321 and a second liquid outlet flow channel structure 322. One end of the second liquid inlet flow channel structure 321 is connected to the energy chamber 141, and the other end of the second liquid inlet flow channel structure 321 is used to connect to a heat exchange medium supply device located outside the housing 10 so that the heat exchange medium can enter the energy chamber 141. One end of the second liquid outlet flow channel structure 322 is connected to the energy chamber 141, and the other end of the second liquid outlet flow channel structure 322 extends outside the housing 10 so as to discharge the heat exchange medium in the energy chamber 141.

[0143] The second liquid inlet flow channel structure 321 refers to the structure in the second flow channel structure 32 used to allow the heat exchange medium to enter the energy chamber 141. The second liquid inlet flow channel structure 321 can transport the heat exchange medium into the energy chamber 141. The second liquid inlet flow channel structure 321 may include a channel structure formed in the frame structure 11, the bottom plate 12 or the top cover 13, or it may include a pipe structure or other structure capable of transporting the heat exchange medium located in the housing 10. One end of the second liquid inlet flow channel structure 321 is connected to the energy chamber 141, and the other end is used to connect to a heat exchange medium supply device (such as a heat exchange medium storage device, a pressurizing device, etc.) located outside the housing 10, so that the heat exchange medium can enter the energy chamber 141 through the second liquid inlet flow channel structure 321.

[0144] The second liquid outlet flow channel structure 322 refers to the structure in the second liquid outlet flow channel structure 322 used to discharge the heat exchange medium in the battery compartment. The second liquid outlet flow channel structure 322 can discharge the heat exchange medium to the outside of the energy compartment 141, such as to external storage devices, pressurization devices, etc., so that the discharged heat exchange medium can re-enter the second liquid inlet flow channel structure 321. The second liquid outlet flow channel structure 322 may include a channel structure formed in the frame structure 11, the bottom plate 12 or the top cover 13, or a pipe structure or other structure capable of transporting the heat exchange medium provided in the housing 10. One end of the second liquid outlet flow channel structure 322 is connected to the energy compartment 141, and the other end extends to the outside of the housing 10 to connect with other structures outside the housing 10 (such as storage devices for the heat exchange medium, pressurization devices, etc.), so that the heat exchange medium can be discharged from the energy compartment 141 through the second liquid outlet flow channel structure 322.

[0145] For example, when the temperature inside the energy chamber 141 is high, the heat exchange medium can enter the energy chamber 141 through the second liquid inlet channel structure 321. The heat exchange medium can fill the energy chamber 141 and immerse each electronic device to reduce the temperature of the battery compartment and each electronic device. The heat exchange medium inside the energy chamber 141 can also be discharged outside the energy chamber 141 through the second liquid outlet channel structure 322. The entry and discharge of the heat exchange medium can be carried out simultaneously so that the heat exchange medium can circulate, thereby better reducing the temperature of the energy chamber 141 and each electronic device.

[0146] This embodiment provides some specific structures of the second flow channel structure 32, which allows the heat exchange medium to enter the energy chamber 141 through the second liquid inlet flow channel structure 321 to reduce the temperature inside the energy chamber 141; it also allows the heat exchange medium to be discharged outside the energy chamber 141 through the second liquid outlet flow channel structure 322, thereby enabling the heat exchange medium to circulate and better reduce the temperature inside the energy chamber 141.

[0147] refer to Figure 4 , Figure 5 , Figure 9 In some embodiments, the second liquid inlet channel structure 321 includes a plate 3211 connected to the frame structure 11, the plate 3211 dividing the energy chamber 141 into at least two sub-energy chambers 1411; the plate 3211 is provided with a second liquid inlet channel 3212, one end of the second liquid inlet channel 3212 is connected to the external environment outside the box 10, and the other end of the second liquid inlet channel 3212 is connected to each sub-energy chamber 1411.

[0148] Plate 3211 refers to the structure in the second liquid inlet flow channel structure 321 used to provide a foundation for the flow channel. Plate 3211 can be rectangular, elliptical, or other shaped structures. There can be one, two, or more plates 3211. Plate 3211 is connected to the frame structure 11 by means of bonding, welding, or other methods. The material of plate 3211 can include metal, plastic, or other materials.

[0149] For example, the length direction of plate 3211 is parallel to the length direction X of battery device 100, and the two ends of plate 3211 along its length direction are respectively connected to two beams of frame structure 11.

[0150] The second liquid inlet channel 3212 refers to the channel structure formed in the plate 3211. The second liquid inlet channel 3212 can be formed in the plate 3211 by means of grooving, drilling, etc., or by embedding pipes or other means. The second liquid inlet channel 3212 can extend in a straight line or bend along a reference straight line. The cross-sectional shape of the second liquid inlet channel 3212 can be circular, square or other shapes.

[0151] The plate 3211 can divide the energy chamber 141 into at least two sub-energy chambers 1411, each of which can accommodate a single battery cell 20. The sub-energy chamber 1411 is formed by the plate 3211, the frame structure 11, the bottom plate 12, and the top cover 13. The sub-energy chamber 1411 can be a cuboid space structure, a cylindrical space structure, or a space structure of other shapes. The number of sub-energy chambers 1411 can be two, three, or more.

[0152] One end of the second liquid inlet channel 3212 is connected to each sub-energy chamber 1411, and the other end is connected to other structures outside the housing 10 (such as heat exchange medium storage devices, pressurization devices, etc.), so that the heat exchange medium can enter each sub-energy chamber 1411 through the second liquid inlet channel 3212.

[0153] For example, there is one plate 3211, which divides the energy chamber 141 into two sub-energy chambers 1411, and the two sub-energy chambers 1411 are located on both sides of the plate 3211. The plate 3211 is provided with a through hole, which can pass through the second liquid inlet channel 3212 and connect the two sub-energy chambers 1411. After the heat exchange medium enters the second liquid inlet channel 3212, it can enter the two sub-energy chambers 1411 through the through hole respectively.

[0154] This embodiment provides some specific structures of the second liquid inlet channel structure 321, which includes a plate 3211 and a second liquid inlet channel 3212 within the plate 3211, so that the heat exchange medium can enter each sub-energy chamber 1411 through the second liquid inlet channel 3212.

[0155] refer to Figure 4 , Figure 5 , Figure 9 In some embodiments, the plate 3211 is provided with a partition plate 32111 to divide the second liquid inlet channel 3212 into at least two sub-channels 32121. One end of each sub-channel 32121 is connected to the external environment outside the box 10, and the other end of each sub-channel 32121 is connected to different sub-energy chambers 1411.

[0156] The partition plate 32111 refers to the structure used to separate the second liquid inlet channel 3212. The partition plate 32111 is disposed in the second liquid inlet channel 3212 and connected to the plate body 3211. The partition plate 32111 can be connected to the plate body 3211 by welding, bonding or other means, or it can be integrally formed with the plate body 3211. The number of partition plates 32111 can be one, two or more. The partition plate 32111 can be a flat plate structure, an arc-shaped plate body 3211, or a plate structure of other shapes. The material of the partition plate 32111 can include metal, plastic or other materials. The material of the partition plate 32111 can be the same as or different from the material of the plate body 3211.

[0157] The partition plate 32111 can divide the second liquid inlet channel 3212 into two sub-channels 32121. That is, the sub-channels 32121 are channel structures formed by the partition plate 32111 dividing the second liquid inlet channel 3212. Depending on the shape and structure of the partition plate 32111 and the plate body 3211, the sub-channels 32121 can extend in a straight line or bend along a reference straight line. The cross-sectional shape of the sub-channels 32121 can be circular, square or other shapes.

[0158] The partition plate 32111 divides the second liquid inlet channel 3212 into at least two sub-channels 32121. The number of sub-channels 32121 can be two, three or more, and the number of sub-channels 32121 can correspond to the number of sub-energy chambers 1411. One end of each sub-channel 32121 can be connected to a different sub-energy chamber 1411, and the other end of each sub-channel 32121 is connected to other structures outside the housing 10 (such as heat exchange medium storage devices, pressurization devices, etc.) so that the heat exchange medium can enter different sub-energy chambers 1411 through different sub-channels 32121.

[0159] Understandably, when there are two or more plates 3211, each plate 3211 can be equipped with a partition plate 32111 and form a sub-channel 32121 so that the heat exchange medium can enter different sub-energy chambers 1411 through different sub-channels 32121.

[0160] In this embodiment, a partition plate 32111 is provided inside the plate 3211 to form at least two sub-channels 32121, so that the heat exchange medium can flow to its respective energy chamber 141 through each sub-channel 32121.

[0161] refer to Figure 4 , Figure 5In some embodiments, the plate 3211 is provided with at least two outlet holes 3213 connected to the second liquid inlet channel 3212 on the side facing each sub-energy chamber 1411; the height of each outlet hole 3213 gradually decreases along the flow path of the heat exchange medium in the second liquid inlet channel 3212.

[0162] The liquid outlet hole 3213 refers to the hole structure provided on the plate 3211. One end of the liquid outlet hole 3213 is connected to the second liquid inlet channel 3212, and the other end is connected to the energy chamber 141, so that the heat exchange medium in the second liquid inlet channel 3212 can enter the energy chamber 141 through the liquid outlet hole 3213. The liquid outlet hole 3213 can be a straight hole, or a stepped hole, a conical hole, or other shaped hole structure. The liquid outlet hole 3213 can be a square hole, a round hole, or other shaped hole structure. The number of liquid outlet holes 3213 is at least two, that is, the number of liquid outlet holes 3213 can be two, or three or more.

[0163] The liquid outlet 3213 is located on the side of the plate 3211 facing each energy chamber 141. When there are sub-energy chambers 1411 on both sides of the plate 3211, the liquid outlet 3213 can be provided on both sides of the plate 3211. When the second liquid inlet channel 3212 includes a sub-channel 32121, different liquid outlets 3213 can be connected to different sub-channels 32121.

[0164] For example, when the second liquid inlet channel 3212 includes two sub-channels 32121, the liquid outlet holes 3213 on both sides of the plate 3211 can be connected to the two sub-channels 32121 respectively, so that the heat exchange medium in the two sub-channels 32121 can enter the sub-energy chambers 1411 on both sides of the plate 3211 through the corresponding liquid outlet holes 3213 respectively.

[0165] The height of the liquid outlet 3213 gradually decreases along the flow path of the heat exchange medium in the second liquid inlet channel 3212. That is, in the direction from the entry of the heat exchange medium into the second liquid inlet channel 3212 to the end of the second liquid inlet channel 3212, the height of each liquid outlet 3213 gradually decreases, so that the flow rate of the heat exchange medium discharged from each liquid outlet 3213 can be similar.

[0166] After the heat exchange medium enters the second inlet channel 3212, the pressure and flow rate decrease as the heat exchange medium passes through each outlet hole 3213. As a result, the heat exchange medium is prone to insufficient pressure and flow rate when it flows to the end of the second inlet channel 3212. The flow rate of the heat exchange medium flowing out of the outlet hole 3213 at the end of the second inlet channel 3212 will be reduced, resulting in poor temperature control effect in the corresponding part of the energy chamber 141.

[0167] Accordingly, the height of the outlet hole 3213 gradually decreases along the flow path of the heat exchange medium within the second inlet channel 3212. Because the outlet hole 3213 at the front end of the second inlet channel 3212 is relatively high, the flow rate of the heat exchange medium flowing through this part of the outlet hole 3213 can be suppressed, reducing the flow loss to the end of the second inlet channel 3212. On the other hand, because the outlet hole 3213 at the end of the second inlet channel 3212 is relatively low, more heat exchange medium can flow through this part of the outlet hole 3213, thereby controlling the flow rate of the heat exchange medium at each outlet hole 3213, reducing the flow rate difference of the heat exchange medium at each outlet hole 3213, thereby reducing the temperature difference at different locations in the energy chamber 141 and improving the temperature uniformity of the energy chamber 141.

[0168] In this embodiment, the height of the liquid outlet 3213 gradually decreases along the flow direction of the heat exchange medium, so that the heat exchange medium can have a larger flow rate at the end of its flow path, thereby enabling the heat exchange medium to exchange heat more evenly on different parts of the energy chamber 141 and improving temperature uniformity.

[0169] refer to Figures 5 to 8 In some embodiments, the second liquid outlet channel structure 322 includes a second liquid outlet channel 3221 formed within the frame structure 11.

[0170] The second liquid outlet channel 3221 refers to the channel structure formed within the frame structure 11. The second liquid outlet channel 3221 can be formed within the frame structure 11 by means of grooving, drilling, etc., or by embedding pipes or other means. The second liquid outlet channel 3221 can extend in a straight line or bend along a reference straight line. The cross-sectional shape of the second liquid outlet channel 3221 can be circular, square, or other shapes. The number of second liquid outlet channels 3221 can be one, two, or more.

[0171] One end of the second liquid outlet channel 3221 is connected to the energy chamber 141, and the other end is connected to other structures outside the housing 10 (such as storage devices for the heat exchange medium, pressurization devices, etc.) so that the heat exchange medium in the energy chamber 141 can be discharged through the second liquid outlet channel 3221.

[0172] For example, when the plate 3211 extends along the length direction X of the battery device 100, the second liquid inlet channel 3212 extends along the length direction X of the battery device 100. At this time, there can be two second liquid outlet channels 3221, which are respectively formed in the beams of the two frame structures 11 extending along the length direction X of the battery device 100. The second liquid inlet channel 3212 and the two second liquid outlet channels 3221 are spaced apart along the width direction Y of the battery device 100. The space between the second liquid inlet channel 3212 and the two second liquid outlet channels 3221 is the space between the two sub-energy chambers 1411. The heat exchange medium can enter the two sub-energy chambers 1411 from the second liquid inlet channel 3212 and control the temperature of the two sub-energy chambers 1411. The heat exchange medium in the two sub-energy chambers 1411 can be discharged to the outside of the housing 10 through the two liquid outlet channels.

[0173] This embodiment provides some specific structures of the second liquid outlet flow channel structure 322, such that the second liquid outlet flow channel structure 322 includes a channel structure formed in the frame structure 11, so as to facilitate the flow of heat exchange medium and reduce the occupation of the second liquid outlet flow channel structure 322 on the internal space of the battery device 100.

[0174] In some embodiments, the frame structure 11 includes at least four profile beams connected end to end; the second liquid outlet channel structure 322 includes a second liquid outlet pipe disposed in at least one profile beam.

[0175] Profiles refer to structural components with specific cross-sectional shapes formed by processes such as rolling, extrusion, or casting. Profile beams refer to the main structures that make up the frame structure 11. There are cavities inside the profile beams. There can be four, five, or more profile beams. Each profile beam can be connected end to end to form the frame structure 11. Each profile beam can be connected end to end by welding, bonding, or other methods.

[0176] The second outlet pipe refers to the pipe structure in the second inlet flow channel structure 321 used to transport the heat exchange medium in the electrical compartment 142 to the outside of the box 10. The second outlet pipe can extend in a straight line or bend along a reference straight line. The second outlet pipe can be a single pipe or can be formed by connecting multiple pipes. The cross-sectional shape of the second outlet pipe can be circular, square, or other shapes. The number of second outlet pipes can be one, two, or more. The material of the second outlet pipe can include metal, plastic, or other materials.

[0177] One end of the second liquid outlet pipe is connected to the energy chamber 141, and the other end is connected to other structures outside the housing 10 (such as storage devices for the heat exchange medium, pressurization devices, etc.), so that the heat exchange medium in the energy chamber 141 can be discharged through the second liquid outlet channel 3221.

[0178] The second liquid outlet pipe is located inside the profile beam. Since there is a cavity inside the profile beam, the second liquid outlet pipe is located inside the profile beam. The cavity inside the profile beam is used to arrange the second liquid outlet pipe, thereby reducing the space occupied by the second liquid outlet pipe in the accommodating space 14. This not only realizes the arrangement of the second liquid outlet pipe, but also reduces the negative impact of the second liquid outlet pipe on the energy density of the battery device 100.

[0179] When the second outlet pipe is located inside the profile beam, the second outlet pipe can be connected to the profile beam by welding, bonding, screwing or other means. The second outlet pipe can also be indirectly connected to the profile beam by a support or other structure.

[0180] For example, when the plate 3211 extends along the length direction X of the battery device 100, the second liquid inlet channel 3212 extends along the length direction X of the battery device 100. At this time, there can be two second liquid outlet pipes, which are respectively formed in the beams of the two frame structures 11 extending along the length direction X of the battery device 100. At this time, the second liquid inlet channel 3212 and the two second liquid outlet pipes are spaced apart along the width direction Y of the battery device 100. The space between the second liquid inlet channel 3212 and the two second liquid outlet pipes is the two sub-energy chambers 1411. The heat exchange medium can enter the two sub-energy chambers 1411 from the second liquid inlet channel 3212 and control the temperature of the two sub-energy chambers 1411. The heat exchange medium in the two sub-energy chambers 1411 can be discharged to the outside of the housing 10 through the two liquid outlet channels.

[0181] This embodiment provides some specific structures for the second liquid outlet channel structure 322, such that the second liquid outlet channel structure 322 includes a second liquid outlet pipe, and the second liquid outlet pipe is set in the gap of the profile beam, so as to facilitate the layout of the second liquid outlet channel structure 322 and reduce the occupation of the second liquid outlet channel structure 322 on the internal space of the battery device 100.

[0182] refer to Figure 4 , Figure 5 In some embodiments, the temperature control component 30 further includes a liquid inlet 33 and a liquid outlet 34 connected to the housing 10; a first flow channel structure 31 is connected to the liquid inlet 33 and the liquid outlet 34 to allow the heat exchange medium to enter or exit the electrical chamber 142; and a second flow channel structure 32 is connected to the liquid inlet 33 and the liquid outlet 34 to allow the heat exchange medium to enter or exit the energy chamber 141.

[0183] The liquid inlet interface 33 refers to the structure in the temperature control component 30 used to connect with other external structures (such as heat exchange medium storage devices, pressurization devices, etc.). The liquid inlet interface 33 can be a threaded interface, a socket interface, a crimp interface, or other types of interface. The number of liquid inlet interfaces 33 can be one, two, or more. The material of the liquid inlet interface 33 can include metal, plastic, or other materials.

[0184] The liquid inlet 33 is connected to the housing 10. The liquid inlet 33 can be connected to the frame structure 11 of the housing 10, or to the top cover 13, bottom plate 12 or other structures of the housing 10. The liquid inlet 33 can be connected to the housing 10 by bonding, screwing, welding or other means. When there are two or more liquid inlets 33, each liquid inlet 33 can be located on a different side of the housing 10.

[0185] The drain port 34 refers to the structure in the temperature control component 30 used to connect with other external structures (such as storage devices for heat exchange medium, pressurizing devices, etc.). The drain port 34 can be a threaded interface, a socket interface, a crimp interface, or other types of interface. The number of drain ports 34 can be one, two, or more. The material of the drain port 34 can include metal, plastic, or other materials.

[0186] The drain port 34 is connected to the housing 10. The drain port 34 can be connected to the frame structure 11 of the housing 10, or to the top cover 13, bottom plate 12 or other structures of the housing 10. The drain port 34 can be connected to the housing 10 by bonding, screwing, welding or other means. The drain port 34 and the inlet port 33 can be located on the same side of the housing 10 or on different sides of the housing 10.

[0187] The first flow channel structure 31 is connected to the liquid inlet 33 and the liquid outlet 34. That is, the first flow channel structure 31 is connected to both the liquid inlet 33 and the liquid outlet 34. When the first flow channel structure 31 includes the first liquid inlet flow channel structure 311 and the first liquid outlet flow channel structure 312, one end of the first liquid inlet flow channel structure 311 is connected to the liquid inlet 33, and one end of the first liquid outlet flow channel structure 312 is connected to the liquid outlet 34. At this time, the heat exchange medium can enter the electrical chamber 142 through the liquid inlet 33 and the first liquid inlet flow channel structure 311, and the heat exchange medium in the electrical chamber 142 can be discharged to the outside of the housing 10 through the first liquid outlet flow channel structure 312 and the liquid outlet 34.

[0188] The second flow channel structure 32 is connected to the liquid inlet 33 and the liquid outlet 34. That is, the second flow channel structure 32 is connected to both the liquid inlet 33 and the liquid outlet 34. When the second flow channel structure 32 includes the second liquid inlet flow channel structure 321 and the second liquid outlet flow channel structure 322, one end of the second liquid inlet flow channel structure 321 is connected to the liquid inlet 33, and one end of the second liquid outlet flow channel structure 322 is connected to the liquid outlet 34. At this time, the heat exchange medium can enter the energy chamber 141 through the liquid inlet 33 and the second liquid inlet flow channel structure 321, and the heat exchange medium in the energy chamber 141 can be discharged to the outside of the box 10 through the second liquid outlet flow channel structure 322 and the liquid outlet 34.

[0189] In this embodiment, an inlet port 33 and a outlet port 34 are provided, and the first flow channel structure 31 and the second flow channel structure 32 are both connected to the inlet port 33 and the outlet port 34, so as to realize the circulation of the heat exchange medium in the energy chamber 141 and the electrical chamber 142.

[0190] refer to Figure 4 , Figure 5 In some embodiments, there is one liquid inlet port 33, and the first flow channel structure 31 and the second flow channel structure 32 are both connected to the liquid inlet port 33.

[0191] There is one liquid inlet port 33. At this time, the first flow channel structure 31 and the second flow channel structure 32 are both connected to the liquid inlet port 33. The liquid inlet port 33 can be a three-way or multi-way port, or a diversion port can be set on the side of the liquid inlet port 33 facing the inside of the housing 10.

[0192] There is only one liquid inlet port 33, and there is only one pipeline connecting the liquid inlet port 33 to other external structures. This reduces the installation difficulty of the liquid inlet port 33, as well as the difficulty of laying out the corresponding pipelines and reduces the space occupation.

[0193] With one inlet port 33, there can be one outlet port 34, or two or more outlet ports 34.

[0194] In this embodiment, the number of liquid inlets is one, which simplifies the structure of the external pipeline corresponding to the liquid inlet, reduces the difficulty of laying out the battery device 100, and reduces the space occupation.

[0195] refer to Figure 4 , Figure 10 In some embodiments, a buffer pad 40 is provided between two adjacent battery cells 20.

[0196] The buffer pad 40 refers to the buffer structure disposed between two adjacent battery cells 20. The buffer pad 40 can cover the entire side of the adjacent battery cell 20, or it can only cover a part of the side of the adjacent battery cell 20. When the buffer pad 40 only covers a part of the side of the adjacent battery cell 20, only one buffer pad 40 can be disposed between two adjacent battery cells 20, or two or more buffer pads 40 can be disposed. The buffer pad 40 can be a solid plate structure 3211, or it can be a structure with a cavity inside. The shape of the buffer can be circular, square or other shapes. The material of the buffer pad 40 can include plastic, rubber or other materials.

[0197] Because battery cells 20 are prone to expansion and deformation during charging and discharging, adjacent battery cells 20 are susceptible to mutual compression and damage. Therefore, a buffer pad 40 is provided between adjacent battery cells 20 to absorb the expansion and deformation of adjacent battery cells 20 and reduce the risk of damage caused by mutual compression.

[0198] In this embodiment, a buffer pad 40 is provided between two adjacent battery cells 20 to reduce the risk of mutual expansion and compression between the two adjacent battery cells 20 during charging and discharging.

[0199] refer to Figure 4 , Figure 10 In some embodiments, at least two buffer pads 40 are provided between two adjacent battery cells 20, and the at least two buffer pads 40 are spaced apart to form a flow channel for heat exchange medium to flow between the two adjacent buffer pads 40.

[0200] The number of buffer pads 40 between two adjacent battery cells 20 is at least two, that is, the number of buffer pads 40 between two adjacent battery cells 20 can be two, three or more; at least two buffer pads 40 are spaced apart, and there is a space between two adjacent buffer pads 40. This space is used for the heat exchange medium to enter and pass through, so that the heat exchange medium can better contact the various surfaces of the battery cells 20, thereby enabling the heat exchange medium to better exchange heat with the battery cells 20.

[0201] In this embodiment, at least two buffer pads 40 are provided between two adjacent battery cells 20, and the buffer pads 40 are spaced apart to form a flow channel between two adjacent battery cells 20 that allows the heat exchange medium to flow, thereby enabling the heat exchange medium to better contact and exchange heat with each surface of the battery cell 20, and further improving the heat exchange effect of the heat exchange medium.

[0202] refer to Figure 3 , Figure 4 , Figure 10 In some embodiments, the battery cell 20 includes two first side surfaces 211 and two second side surfaces 212 disposed on its periphery. The two first side surfaces 211 are disposed opposite to each other, and the two second side surfaces 212 are disposed opposite to each other. The area of ​​the first side surface 211 is larger than the area of ​​the second side surface 212. A buffer pad 40 is disposed between the first side surfaces 211 of two adjacent battery cells 20.

[0203] The first side 211 and the second side 212 both refer to the circumferential side of the battery cell 20. There are two first side 211 and two second side 212. The two first side 211 are arranged at intervals relative to each other, and the two second side 212 are arranged at intervals relative to each other. That is, the two first side 211 and the two second side 212 are connected end to end in sequence to form the circumferential side of the battery cell 20.

[0204] The first side 211 and the second side 212 can be either flat or curved. When both the first side 211 and the second side 212 are flat, the battery cell 20 can be a prismatic battery cell 20. When both the first side 211 and the second side 212 are curved, the battery cell 20 can be a cylindrical battery cell 20.

[0205] The area of ​​the first side 211 is larger than that of the second side 212. During the charging and discharging process of the battery cell 20, the expansion deformation of the first side 211 is greater. Accordingly, a buffer pad 40 is placed between the first sides 211 of two adjacent battery cells 20 to absorb the expansion deformation of the first side 211 and reduce the risk of the first sides 211 of the two battery cells 20 squeezing each other.

[0206] This embodiment provides some specific locations of the buffer pads 40. The buffer pads 40 are placed between the first side 211 of two adjacent battery cells 20, and the first side 211 is the side with a larger area of ​​the battery cell 20, so that the buffer pads 40 can better reduce the risk of the two adjacent battery cells 20 expanding and squeezing each other during charging and discharging.

[0207] In some embodiments, the battery device 100 includes a housing 10, a battery cell 20, a temperature control component 30, and a cushioning pad 40.

[0208] The housing 10 includes a frame structure 11, a top cover 13, and a bottom plate 12. The frame structure 11 includes multiple beam structures connected end to end. These beam structures are profile beams. The multiple beam structures enclose an accommodating space 14 that runs through the frame structure 11 along the height direction Z of the battery device 100. The top cover 13 and the bottom plate 12 are respectively connected to the frame structure 11 along the height direction Z of the battery device 100 to enclose the accommodating space 14.

[0209] The housing 14 is provided with a partition beam whose length direction is parallel to the width direction Y of the battery device 100, so as to divide the housing 14 into an electrical compartment 142 and an energy compartment 141.

[0210] The battery cell 20 is housed in the energy compartment 141, and the electrical compartment 142 contains electronic components.

[0211] The temperature control component 30 includes a first flow channel structure 31 and a second flow channel structure 32; the temperature control component 30 also includes an inlet port 33 and an outlet port 34 disposed on the frame structure 11.

[0212] The first flow channel structure 31 includes a first liquid inlet flow channel structure 311 and a first liquid outlet flow channel structure 312. The first liquid inlet flow channel structure 311 includes a first liquid inlet pipe disposed within the frame structure 11, and the first liquid outlet flow channel structure 312 includes a first liquid outlet pipe disposed within the frame structure 11. The first liquid inlet pipe and the first liquid outlet pipe are respectively disposed within two beam structures arranged along the width Y direction of the battery device 100 in the frame structure 11. One end of the first liquid inlet pipe is connected to the liquid inlet interface 33, and the other end is connected to the electrical compartment 142. One end of the first liquid outlet pipe is connected to the liquid outlet interface 34, and the other end is connected to the electrical compartment 142.

[0213] The second flow channel structure 32 includes a second inlet flow channel structure 321 and a second outlet flow channel structure 322.

[0214] The second liquid inlet channel structure 321 includes a plate 3211, the length direction of which is parallel to the length direction X of the battery device 100. The plate 3211 divides the energy chamber 141 into two sub-energy chambers 1411 arranged along the width direction Y of the battery device 100. The plate 3211 contains a second liquid inlet channel 3212, the length direction of which is parallel to the length direction X of the battery device 100. The second liquid inlet channel 3212 contains a partition plate 32111 that divides the second liquid inlet channel 3212 into two sub-channels 32121, which are arranged along the width direction Y of the battery device 100. Both sub-channels 32121 are connected to the liquid inlet interface 33.

[0215] The plate 3211 has drain holes on the side walls facing the two sub-energy chambers 1411, and the drain holes on the two sides are connected to the two sub-flow channels 32121 respectively; along the length of the battery device 100, the height of each drain hole gradually decreases along the flow path of the heat exchange medium.

[0216] The second liquid outlet channel structure 322 includes two second liquid outlet pipes disposed within the frame structure 11. The two second liquid outlet pipes are respectively disposed within two beam structures arranged in the width direction Y of the battery device 100 in the frame structure 11. One end of each of the two second liquid outlet pipes is connected to the liquid outlet interface 34, and the other end is connected to the energy chamber 141.

[0217] Each battery cell 20 has a first side 211 and a second side 212. The area of ​​the first side 211 is larger than the area of ​​the second side 212. The first side 211 of each battery cell 20 is arranged along the length direction X of the battery device 100. At least two buffer pads 40 are provided between the first side 211 of two adjacent battery cells 20. The buffer pads 40 between two adjacent battery cells 20 are arranged at intervals along the height direction Z of the battery device 100 and form a flow channel extending along the width direction Y of the battery device 100.

[0218] During the use of the battery device 100, the coolant can enter the energy chamber 141 through the second inlet flow channel structure 321, and after flowing through the battery cell 20, it can be discharged through the second outlet flow channel structure 322, so that the coolant can circulate and thus better control the temperature of the battery cell 20.

[0219] If the temperature inside the electrical compartment 142 is detected to be higher than the preset temperature, the coolant can enter the electrical compartment 142 through the first inlet flow channel structure 311, and after flowing through the electronic components, it can be discharged through the first outlet flow channel structure 312 to circulate the coolant and reduce the temperature of the electrical compartment 142. If the temperature inside the electrical compartment 142 drops to another preset temperature, the coolant can be discharged from the electrical compartment 142 through the second outlet flow channel structure 322, so that no coolant accumulates in the electrical compartment 142.

[0220] Secondly, embodiments of this application also provide an electrical device, including the battery device 100 provided in some embodiments of the first aspect.

[0221] In this electrical device, the battery device 100 adopts an immersion cooling structure, and the electrical compartment 142 and the energy compartment 141 are independently controlled by a first flow channel structure 31 and a second flow channel structure 32 that are not connected to each other, which improves the temperature control efficiency of the energy compartment 141 and the electrical compartment 142.

[0222] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The enclosure includes a frame structure, a bottom plate, and a top cover. The frame structure has an accommodating space that extends through a first direction. The bottom plate and the top cover are respectively connected to both sides of the frame structure along the first direction to enclose the accommodating space. The containment space includes an energy compartment and an electrical compartment that are not interconnected, and the electrical compartment is used to house electronic devices. The battery cells are housed in the energy storage chamber; The temperature control component includes a first flow channel structure and a second flow channel structure that are not interconnected. The first flow channel structure is connected to the electrical chamber so that a heat exchange medium can enter the electrical chamber and immerse at least a portion of the electrical chamber. The second flow channel structure is connected to the energy chamber so that the heat exchange medium can enter the energy chamber and immerse at least a portion of the energy chamber.

2. The battery device according to claim 1, characterized in that, The first flow channel structure includes a first liquid inlet flow channel structure and a first liquid outlet flow channel structure. One end of the first liquid inlet flow channel structure is connected to the electrical compartment, and the other end of the first liquid inlet flow channel structure is used to connect to the heat exchange medium supply device located outside the box, so that the heat exchange medium can enter the electrical compartment. One end of the first liquid outlet channel is connected to the electrical compartment, and the other end of the first liquid outlet channel extends outside the housing to discharge the heat exchange medium inside the electrical compartment.

3. The battery device according to claim 2, characterized in that, The first liquid inlet channel structure includes a first liquid inlet channel formed within the frame structure, and the first liquid outlet channel structure includes a first liquid outlet channel formed within the frame structure.

4. The battery device according to claim 3, characterized in that, The frame structure includes at least four profile beams connected end to end; The first liquid inlet channel structure includes a first liquid inlet pipe disposed within at least one of the profile beam bodies, and the first liquid outlet channel structure includes a first liquid outlet pipe disposed within at least one of the profile beam bodies.

5. The battery device according to any one of claims 1-4, characterized in that, The second flow channel structure includes a second liquid inlet flow channel structure and a second liquid outlet flow channel structure. One end of the second liquid inlet flow channel structure is connected to the energy chamber, and the other end of the second liquid inlet flow channel structure is used to connect to the heat exchange medium supply device located outside the box, so that the heat exchange medium can enter the energy chamber. One end of the second liquid outlet channel structure is connected to the energy chamber, and the other end of the second liquid outlet channel structure extends outside the box to discharge the heat exchange medium in the energy chamber.

6. The battery device according to claim 5, characterized in that, The second liquid inlet channel structure includes a plate connected to the frame structure, the plate dividing the energy chamber into at least two sub-energy chambers; The plate body is provided with a second liquid inlet channel. One end of the second liquid inlet channel is connected to the external environment outside the box body, and the other end of the second liquid inlet channel is connected to each of the sub-energy chambers.

7. The battery device according to claim 6, characterized in that, The plate body is provided with a partition plate to divide the second liquid inlet channel into at least two sub-channels. One end of each sub-channel is connected to the external environment outside the box body, and the other end of each sub-channel is connected to different sub-energy chambers.

8. The battery device according to claim 7, characterized in that, The plate body is provided with at least two liquid outlet holes on the side facing each of the sub-energy chambers, which are connected to the second liquid inlet channel; Along the flow path of the heat exchange medium within the second inlet channel, the height of each outlet hole gradually decreases.

9. The battery device according to claim 5, characterized in that, The second liquid outlet channel structure includes a second liquid outlet channel formed within the frame structure.

10. The battery device according to claim 5, characterized in that, The frame structure includes at least four profile beams connected end to end; The second liquid outlet channel structure includes a second liquid outlet pipe disposed within at least one of the profile beams.

11. The battery device according to any one of claims 1-4, characterized in that, The temperature control component also includes a liquid inlet and a liquid outlet connected to the housing; The first flow channel structure is connected to the liquid inlet and the liquid outlet to allow the heat exchange medium to enter or exit the electrical compartment; The second flow channel structure is connected to the liquid inlet and the liquid outlet to allow the heat exchange medium to enter or exit the energy chamber.

12. The battery device according to claim 11, characterized in that, The number of liquid inlet ports is one, and both the first flow channel structure and the second flow channel structure are connected to the liquid inlet ports.

13. The battery device according to any one of claims 1-4, characterized in that, A buffer pad is provided between two adjacent battery cells.

14. The battery device according to claim 13, characterized in that, At least two buffer pads are provided between two adjacent battery cells, and the at least two buffer pads are spaced apart to form a flow channel for the heat exchange medium to flow between the two adjacent buffer pads.

15. The battery device according to claim 13, characterized in that, The battery cell includes two first sides and two second sides disposed on its periphery, the two first sides being disposed opposite to each other, the two second sides being disposed opposite to each other, and the area of ​​the first sides being larger than the area of ​​the second sides. The buffer pad is disposed between the first side surfaces of two adjacent battery cells.

16. An electrical appliance, characterized in that, The battery device includes any one of claims 1-15.

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