Battery device and electric device

Abstract

The application relates to the technical field of battery structure, and provides a battery device and a power utilization device. The battery device comprises a first box body, a battery monomer and an electrical component. A first beam of the first box body is arranged in a containing space and separates the containing space into a first containing cavity and a second containing cavity along a first direction. A heat exchange plate is arranged in the first containing cavity and connected to a bottom plate. In a projection plane perpendicular to a second direction, the orthographic projection of the heat exchange plate is connected to or separated from the orthographic projection edge of the second containing cavity. The first direction is perpendicular to the second direction. The battery monomer is accommodated in the first containing cavity and arranged on the heat exchange plate. The electrical component is accommodated in the second containing cavity and electrically connected to the battery monomer. The battery device provided by the embodiment of the application is characterized in that the heat exchange plate is arranged only in the first containing cavity and does not extend into the second containing cavity, so that the heat exchange plate does not occupy the use space of the second containing cavity.

Description

Technical Field

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

[0002] Battery devices are widely used in transportation vehicles, airplanes, ships, and other vehicles. To meet the cooling requirements of the individual battery cells inside the enclosure, heat exchange plates are typically laid at the bottom of the enclosure to achieve heat exchange and heat dissipation. However, in related technologies, the heat exchange plates are laid all the way down the bottom of the enclosure, which affects the utilization of the internal space and consequently the assembly of electrical components. Utility Model Content

[0003] The purpose of this application is to provide a battery device and an electrical device, which aims to solve the problem in the related art that the assembly of the heat exchange plate of the battery device will affect the internal storage space of the housing, thereby resulting in insufficient assembly space for electrical components.

[0004] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0005] In a first aspect, embodiments of this application provide a battery device, including a first housing, battery cells, and electrical components. The first housing includes a base plate, a frame, a first beam, and a heat exchange plate. The base plate and the frame enclose a receiving space. The first beam is disposed within the receiving space and divides the receiving space into a first receiving cavity and a second receiving cavity distributed along a first direction. The heat exchange plate is disposed within the first receiving cavity and connected to the base plate. In a projection plane perpendicular to the second direction, the orthographic projection of the heat exchange plate is either connected to or separated from the orthographic projection edge of the second receiving cavity. The first direction is perpendicular to the second direction. The battery cells are housed within the first receiving cavity and disposed on the heat exchange plate. The electrical components are electrically connected to the battery cells and are housed within the second receiving cavity.

[0006] The beneficial effects of the embodiments of this application are as follows: The battery device provided in the embodiments of this application, by setting the first beam in the accommodating space and dividing the accommodating space into a first accommodating cavity and a second accommodating cavity, allows the battery cell to be accommodated in the first accommodating cavity and the electrical components to be accommodated in the second accommodating cavity, thereby achieving partitioned arrangement. At the same time, the heat exchange plate is only set in the first accommodating cavity and does not extend into the second accommodating cavity. In this way, the heat exchange plate can form heat exchange with the battery cell in the first accommodating cavity, and the heat exchange plate will not encroach on the usable space of the second accommodating cavity, thereby making the space in the second accommodating cavity for accommodating the electrical components more spacious. This can optimize the assembly space of the electrical components and facilitate the assembly operation of the electrical components.

[0007] In some embodiments, a portion of the heat exchange plate extends between the first beam and the base plate and is stacked thereon, with the stacked portions of the first beam, heat exchange plate, and base plate being connected and fixed.

[0008] By adopting the above technical solution, the heat exchange plate can extend between the first beam and the bottom plate and form a multi-layered structure with the first beam and the bottom plate. By connecting and fixing the first beam, the heat exchange plate and the bottom plate in the layered part, the overall strength of the first box can be effectively improved.

[0009] In some embodiments, the heat exchange plate is provided with a first clearance groove, which is located between the first beam and the bottom plate. The first clearance groove penetrates the heat exchange plate along a second direction, so that a portion of the first beam is disposed opposite to the bottom plate through the first clearance groove, and the first beam is connected and fixed to the bottom plate through the first clearance groove.

[0010] By adopting the above technical solution, the first beam can be further connected to the bottom plate through the first clearance groove, which can further improve the connection strength between the bottom plate and the first beam, thereby further improving the overall strength of the first box.

[0011] In some embodiments, a first protrusion is formed on one side of the base plate facing the first beam along the second direction. The first protrusion passes through the first relief groove and abuts against the first beam. The first protrusion is welded and fixed to the first beam.

[0012] By adopting the above technical solution, the base plate can abut against the first beam through the first protrusion and be welded and fixed to the first beam, which can effectively improve the connection reliability between the base plate and the first beam.

[0013] In some embodiments, a gap space is formed between the heat exchange plate and the base plate, and a filling layer is disposed in the gap space.

[0014] By adopting the above technical solution, the filling layer can fill the gap between the heat exchange plate and the bottom plate, which can improve the structural strength of the bottom of the battery device and thus improve the anti-ball performance of the battery device.

[0015] In some embodiments, the base plate includes a first plate portion and a second plate portion arranged sequentially along a first direction, and the second plate portion is offset relative to the first plate portion toward the receiving space along a second direction; a first beam is disposed on the second plate portion, and at least a portion of the heat exchange plate is located on the side of the first beam toward the first plate portion along the first direction, and electrical components are located on the other side of the first beam away from the first plate portion.

[0016] By adopting the above technical solution, when the first beam is set on the second plate, the size of the first beam along the second direction can be reduced, which can effectively reduce the moment formed at the connection between the first beam and the base plate, thereby improving the reliability of the connection between the first beam and the base plate.

[0017] In some embodiments, the base plate extends straight along a first direction.

[0018] By adopting the above technical solution, the base plate is extended straight along the first direction, which can effectively reduce the impact of the base plate along the second direction on the space of the second receiving cavity, thereby improving the ability of the second receiving cavity to accommodate and assemble electrical components.

[0019] In some embodiments, the battery device further includes a mounting bracket, through which multiple electrical components are respectively connected to the base plate.

[0020] By adopting the above technical solution, multiple electrical components can be connected to the base plate by mounting brackets, so that multiple electrical components can be assembled in a distributed manner in the second receiving cavity, thereby fully improving the space utilization efficiency of the second receiving cavity.

[0021] In some embodiments, the first housing further includes a second beam disposed within the first receiving cavity and dividing the first receiving cavity into a first sub-receiving cavity and a second sub-receiving cavity; the first sub-receiving cavity is used to accommodate a single battery cell; along a first direction, the first sub-receiving cavity is located on the side of the second sub-receiving cavity closer to the second receiving cavity.

[0022] By adopting the above technical solution, the first receiving cavity can be further divided into a first sub-receiving cavity and a second sub-receiving cavity using the second beam. In this way, the first sub-receiving cavity is used to accommodate battery cells, and the second sub-receiving cavity can be used to absorb energy through deformation in the event of a collision, so as to form a buffer protection effect on the battery cells in the first sub-receiving cavity.

[0023] In some embodiments, the heat exchange plate includes a heat exchange section and an interface section. The heat exchange section is provided with a heat exchange channel for accommodating the heat exchange medium, and the interface section is provided with an interface channel communicating with the heat exchange channel. The interface channel is used to introduce the heat exchange medium into the heat exchange channel. At least a portion of the heat exchange section is disposed in a first sub-accommodating cavity, and the interface section is disposed in a second sub-accommodating cavity.

[0024] By adopting the above technical solution, the heat exchange section can form heat exchange with the battery cell through the heat exchange flow channel in the first sub-receiving cavity. At the same time, the interface section can be set in the second sub-receiving cavity and the heat exchange medium can be circulated through the interface channel. By separating the interface section with the interface channel from the battery cell, when the heat exchange medium leaks in the interface section, the impact of the heat exchange medium on the battery cell is low, thereby reducing the probability of short circuit in the battery cell.

[0025] In some embodiments, a portion of the heat exchange plate extends between the second beam and the base plate and is stacked thereon, with the stacked portions of the second beam, heat exchange plate, and base plate being connected and fixed.

[0026] By adopting the above technical solution, the heat exchange plate can extend between the second beam and the bottom plate and form a multi-layered structure with the second beam and the bottom plate. By connecting and fixing the overlapping parts of the second beam, the heat exchange plate and the bottom plate, the overall strength of the first box can be effectively improved.

[0027] In some embodiments, the heat exchange plate is provided with a second clearance groove, which is located between the second beam and the bottom plate. The second clearance groove extends through the heat exchange plate in a second direction, so that a portion of the second beam is disposed opposite to the bottom plate through the second clearance groove, and the second beam is connected and fixed to the bottom plate through the second clearance groove.

[0028] By adopting the above technical solution, the second beam can be further connected to the bottom plate through the second clearance groove, which can further improve the connection strength between the bottom plate and the second beam, thereby further improving the overall strength of the first box.

[0029] In some embodiments, a second protrusion is formed on one side of the base plate facing the second beam along the second direction. The second protrusion passes through the second clearance groove and abuts against the second beam. The second protrusion is welded and fixed to the second beam.

[0030] By adopting the above technical solution, the base plate can abut against the second beam through the second protrusion and be welded and fixed to the second beam, which can effectively improve the connection reliability between the base plate and the second beam.

[0031] Secondly, embodiments of this application also provide an electrical device, which includes a battery device as described above, and the battery device is used to provide electrical energy.

[0032] The beneficial effects of the embodiments of this application are as follows: The electrical device provided in the embodiments of this application includes the above-mentioned battery device. Based on the fact that the battery device can optimize the assembly space of electrical components, the reliability of the electrical device is better. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0035] Figure 2 An exploded view of the battery device provided in the embodiments of this application;

[0036] Figure 3 This is an exploded structural diagram of a battery cell provided in an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of the internal structure of the first housing provided in an embodiment of this application;

[0038] Figure 5 A cross-sectional view of the first housing provided in an embodiment of this application;

[0039] Figure 6 for Figure 5 A magnified view of part A;

[0040] Figure 7 for Figure 5 A magnified view of part B;

[0041] Figure 8 A partial structural schematic diagram of another bottom plate of the first box provided in an embodiment of this application;

[0042] Figure 9 This is a schematic diagram of the structure of the heat exchange plate provided in an embodiment of this application.

[0043] The following are the labeling elements in the figure:

[0044] 1000, vehicles;

[0045] 100. Battery assembly; 200. Controller; 300. Motor;

[0046] 10. Box body; 11. First box body; 11a. Receiving space; 11a1. First receiving cavity; 11a2. Second receiving cavity; 11a11. First sub-receiving cavity; 11a12. Second sub-receiving cavity; 111. Base plate; 111a. First plate part; 111b. Second plate part; 1111. First protrusion; 1112. Second protrusion; 112. Frame; 12. Second box body;

[0047] 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Electrode assembly; 23a. Tab;

[0048] 30. Electrical components; 40. First beam;

[0049] 50. Heat exchange plate; 501. First clearance groove; 502. Second clearance groove; 51. Heat exchange section; 511. Heat exchange flow channel; 521. Interface channel; 52. Interface section;

[0050] 60. Filler layer; 70. Mounting bracket; 80. Second beam;

[0051] X, first direction; Z, second direction. Detailed Implementation

[0052] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0053] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in industrial equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0057] To meet the cooling requirements of the battery cells inside the enclosure, heat exchange plates are typically laid at the bottom of the enclosure to exchange heat with the battery cells and achieve heat dissipation. However, in related technologies, the heat exchange plates are laid across the entire bottom of the enclosure, meaning they simultaneously cover areas where no battery cells are located, such as areas used to assemble electrical components like high-voltage boxes and controllers. Therefore, the placement of the heat exchange plates affects the usable space for electrical components in the depth direction of the enclosure's cavity. When the electrical components are large, with the heat exchange plates occupying space in the depth direction of the enclosure's cavity, the electrical components may protrude outside the cavity, thus affecting their assembly.

[0058] In related technologies, to address the issue of insufficient assembly space for large electrical components, the size of the enclosure is typically increased to correspondingly expand the size of the enclosure's accommodating cavity, thus facilitating the assembly of the electrical components. However, increasing the size of the enclosure leads to an increase in the overall size of the battery device, which is detrimental to its use.

[0059] Based on the above considerations, in order to solve the problem that the assembly of the heat exchange plate of the battery device in related technologies affects the internal storage space of the housing, thus resulting in insufficient space for the assembly of electrical components, a battery device is designed. By setting a first beam in the storage space of the first housing to divide the storage space into a first storage cavity and a second storage cavity, the electrical components and battery cells can be arranged separately and housed in the second storage cavity and the first storage cavity, respectively. On this basis, the heat exchange plate can be laid only in the first storage cavity and placed on the bottom plate in the first storage cavity, so that the heat exchange plate can form heat exchange with the battery device housed in the first storage cavity. At the same time, the heat exchange plate does not extend into the second storage cavity, so the heat exchange plate does not affect the space in the second storage cavity. This allows the space in the second storage cavity along the second direction to be fully used to house the electrical components, thereby optimizing the assembly space of the electrical components and facilitating the assembly operation of the electrical components.

[0060] The battery device disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0061] 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.

[0062] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0063] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0064] Please refer to Figure 2 , Figure 2 This is an exploded view 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 a plurality of battery cells 20, which are connected in series, parallel, or mixed connection via a busbar.

[0065] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 20.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] As an example, the housing 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fastened together to form a closed space inside the housing 10 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 11 may be a top cover or a bottom plate.

[0071] As an example, the housing 10 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 10 forms an enclosed space to accommodate the battery cell assembly.

[0072] 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.

[0073] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 20, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0074] In this embodiment of the application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be used again after the battery cell has been discharged by recharging to activate the active materials.

[0075] The battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0076] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit constituting the battery device 100. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0077] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment; the shape of end cap 21 can be adapted to the shape of housing 22 to fit housing 22. Optionally, end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed when subjected to compression and impact, so that battery cell 20 can have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used to electrically connect with electrode assembly 23 for outputting or inputting electrical energy of battery cell 20. In some embodiments, end cap 21 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 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0078] The housing 22 is a component used to cooperate with the end cap 21 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 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 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 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The housing 22 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0079] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The housing 22 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, while the portions of the positive and negative electrode sheets without active material each constitute a tab 23a. 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 device 100, active ions (e.g., lithium ions) reversibly insert and extract between the positive and negative electrode sheets to achieve charging and discharging, and the tabs connect to the electrode terminals to form a current loop.

[0080] According to some embodiments of this application, refer to Figure 4 and Figure 5 This application provides a battery device 100, including a first housing 11, a battery cell 20, and electrical components 30. The first housing 11 includes a base plate 111, a frame 112, a first beam 40, and a heat exchange plate 50. The base plate 111 and the frame 112 enclose a receiving space 11a. The first beam 40 is disposed in the receiving space 11a and divides the receiving space 11a into a first receiving cavity 11a1 and a second receiving cavity 11a2 distributed along a first direction X. The heat exchange plate 50 is disposed in the first receiving cavity 11a1 and connected to the bottom plate 111. In the projection plane perpendicular to the second direction Z, the orthographic projection of the heat exchange plate 50 is connected to or separated from the edge of the orthographic projection of the second receiving cavity 11a2. The first direction X is perpendicular to the second direction Z. The battery cell 20 is housed in the first receiving cavity 11a1 and is disposed on the heat exchange plate 50. The electrical component 30 is electrically connected to the battery cell 20 and is housed in the second receiving cavity 11a2.

[0081] The first box 11 includes a base plate 111 and a surrounding frame 112. The surrounding frame 112 is arranged around the outer periphery of the base plate 111 and is combined to form a basin-like structure. Optionally, the first box 11 may be, but is not limited to, a basin structure with a circular structure, a basin structure with a triangular structure, a basin structure with a rectangular structure, or other polygonal basin structures.

[0082] The internal area enclosed by the base plate 111 and the frame 112 is the accommodating space 11a of the first box 11. The accommodating space 11a can be used for the accommodating and assembling of various components such as battery cells 20 and electrical components 30.

[0083] Optionally, the frame 112 and the base plate 111 may be made of aluminum alloy, steel alloy, or composite materials (such as copper-aluminum alloy, steel-aluminum alloy, or steel-copper alloy). The frame 112 and the base plate 111 can be integrated by welding, bolting, or sheet metal bending.

[0084] The first beam 40 includes, but is not limited to, beam structures such as extruded aluminum beams and profile beams. The number of first beams 40 can be any number, such as one, two, three, or more than three.

[0085] Optionally, the first beam 40 and the first box body 11 can be fixedly connected by means of welding, bonding, bolting, etc. For example, the first beam 40 can be fixed to the bottom plate 111 and the frame 112 of the first box body 11 by welding.

[0086] The first beam 40 is disposed within the receiving space 11a, and the first beam 40 is capable of dividing the receiving space 11a along the first direction X to form a first receiving cavity 11a1 and a second receiving cavity 11a2. It can be understood that the length direction of the first beam 40 can be disposed along any direction intersecting the first direction X, such as a direction perpendicular to the first direction X; thus, the first beam 40 is divided along opposite sides of the first direction X to form mutually independent first receiving cavities 11a1 and second receiving cavities 11a2.

[0087] The battery cell 20 can be housed in the first receiving cavity 11a1, and the electrical component 30 can be housed in the second receiving cavity 11a2. In this way, the separate arrangement of the battery cell 20 and the electrical component 30 can achieve physical isolation between the two, so as to effectively reduce the mutual influence between the battery cell 20 and the electrical component 30.

[0088] The first direction X can be any direction parallel to the surface of the base plate 111. For example, when the base plate 111 has a rectangular structure, the first direction X can be parallel to the length direction or the width direction of the base plate 111.

[0089] The aforementioned electrical components 30 include, but are not limited to, high-voltage boxes, wiring harnesses, and conductive copper busbars. The electrical components 30 can be fixedly assembled to the base plate 111 within the area of ​​the second receiving cavity 11a2 by means of bolt fastening, bracket mounting, or bracket mounting.

[0090] The heat exchange plate 50 refers to the component used to form heat exchange with the battery cell 20 in order to realize thermal management operation of the battery cell 20.

[0091] The heat exchange plate 50 is disposed within the first receiving cavity 11a1 and is connected to the base plate 111 for fixed assembly. Optionally, the heat exchange plate 50 may be fixedly connected to the base plate 111 by means of, but not limited to, adhesive, bolting, welding, etc. Thus, when the battery cell 20 is housed within the first receiving cavity 11a1, the battery cell 20 may be disposed on the heat exchange plate 50, for example, by adhesive bonding to the heat exchange plate 50, to improve the heat exchange efficiency between the heat exchange plate 50 and the battery cell 20.

[0092] In some embodiments, a heat exchange channel can be provided inside the heat exchange plate 50, and heat exchange media such as water and heat transfer oil can be circulated into the heat exchange channel to achieve the heat exchange effect.

[0093] In the projection plane perpendicular to the second direction Z, the orthographic projection of the heat exchange plate 50 is either connected to or separated from the orthographic projection edge of the second receiving cavity 11a2; that is, the heat exchange plate 50 is disposed in the first receiving cavity 11a1 and does not extend into the range of the second receiving cavity 11a2.

[0094] For example, the heat exchange plate 50 may be completely contained within the first receiving cavity 11a1; or, the heat exchange plate 50 may extend along the first direction X toward the first beam 40 to between the first beam 40 and the bottom plate 111, but not extend into the second receiving cavity 11a2.

[0095] The second direction Z mentioned above refers to the direction perpendicular to the first direction X; for example, in some embodiments, the second direction Z may be parallel to the thickness direction of the base plate 111.

[0096] In this way, the heat exchange plate 50 can achieve the heat exchange effect on the battery cell 20 in the first receiving cavity 11a1, and the heat exchange plate 50 does not extend into the second receiving cavity 11a2, that is, the heat exchange plate 50 does not occupy the usable space of the second receiving cavity 11a2, and the electrical component 30 has more usable space in the second receiving cavity 11a2.

[0097] With this configuration, the battery device 100 provided in this embodiment of the application, by setting the first beam 40 in the accommodating space 11a and dividing the accommodating space 11a into a first accommodating cavity 11a1 and a second accommodating cavity 11a2, can accommodate the battery cell 20 in the first accommodating cavity 11a1 and the electrical component 30 in the second accommodating cavity 11a2, thereby achieving a partitioned arrangement. At the same time, the heat exchange plate 50 can be set only in the first accommodating cavity 11a1 without extending into the second accommodating cavity 11a2. In this way, the heat exchange plate 50 can form heat exchange with the battery cell 20 in the first accommodating cavity 11a1, and the heat exchange plate 50 will not encroach on the usable space of the second accommodating cavity 11a2, thereby making more space in the second accommodating cavity 11a2 along the second direction Z for accommodating the electrical component 30. This can optimize the assembly space of the electrical component 30, so as to facilitate the assembly operation of the electrical component 30.

[0098] Please refer to Figures 4 to 6 In some embodiments, a portion of the heat exchange plate 50 extends between the first beam 40 and the base plate 111 and is stacked thereon, with the stacked portions of the first beam 40, the heat exchange plate 50, and the base plate 111 being connected and fixed.

[0099] In this embodiment, a portion of the heat exchange plate 50 can extend between the first beam 40 and the bottom plate 111, thus the first beam 40, the heat exchange plate 50, and the bottom plate 111 can be combined to form a multi-layered structure; furthermore, the overlapping portions of the first beam 40, the heat exchange plate 50, and the bottom plate 111 are connected and fixed, thereby increasing the connection strength of the overlapping portions of the first beam 40, the heat exchange plate 50, and the bottom plate 111, which can improve the overall strength of the first housing 11.

[0100] Optionally, the connection method of the first beam 40, the heat exchange plate 50 and the base plate 111 can be as follows: the overlapping parts of the first beam 40, the heat exchange plate 50 and the base plate 111 are welded together to form a welded part that connects the three, so that the three are fixed together by the welded part; or, the first beam 40, the heat exchange plate 50 and the base plate 111 can be fixed by fastening (e.g., bolts, screws, etc.) and welding at the same time; or, the first beam 40 and the heat exchange plate 50 can be welded together, the heat exchange plate 50 and the base plate 111 can be welded together, and the first beam 40 and the base plate 111 can also be welded together. At the same time, the first beam 40, the heat exchange plate 50 and the base plate 111 are welded together to form a welded part that connects the three, so that the three are fixed together by welding.

[0101] It should be noted that the welded part refers to the description of the structure formed after the partial melting, mixing and solidification of multiple components. The welded part can be dot-shaped, strip-shaped or other shapes.

[0102] It should be understood that the heat exchange plate 50 extends only between the first beam 40 and the bottom plate 111, and the heat exchange plate 50 does not exceed the coverage of the first beam 40, that is, the heat exchange plate 50 does not extend into the second receiving cavity 11a2.

[0103] With this configuration, the heat exchange plate 50 can extend between the first beam 40 and the bottom plate 111 and form a multi-layered structure with the first beam 40 and the bottom plate 111. By connecting and fixing the overlapping parts of the first beam 40, the heat exchange plate 50 and the bottom plate 111, the overall strength of the first housing 11 can be effectively improved.

[0104] Please refer to Figures 4 to 6 as well as Figure 9 In some embodiments, the heat exchange plate 50 is provided with a first clearance groove 501. The first clearance groove 501 is located between the first beam 40 and the bottom plate 111. The first clearance groove 501 penetrates the heat exchange plate 50 along the second direction Z, so that a part of the first beam 40 is disposed opposite to the bottom plate 111 through the first clearance groove 501. The first beam 40 is connected and fixed to the bottom plate 111 through the first clearance groove 501.

[0105] In this embodiment, a through-hole first clearance groove 501 can be opened on the heat exchange plate 50, and a portion of the first beam 40 can be arranged opposite to the bottom plate 111 through the first clearance groove 501; in this way, the first beam 40 can be connected to the bottom plate 111 through the first clearance groove 501.

[0106] Optionally, the first clearance groove 501 can be a closed slot structure formed inside the heat exchange plate 50; or, the first clearance groove 501 can be an open groove structure formed at the edge of the heat exchange plate 50 and connected to the outside at the edge. It should be understood that the first clearance groove 501 penetrates the heat exchange plate 50 along the second direction Z, so that the first beam 40 and the bottom plate 111 located on opposite sides of the first clearance groove 501 can be connected through the first clearance groove 501.

[0107] Optionally, the connection method between the first beam 40 and the base plate 111 includes, but is not limited to, bonding, welding, bolting, etc.

[0108] For example, in some embodiments, the heat exchange plate 50 has a plurality of connecting protrusions protruding from one end along the first direction X and toward the second receiving cavity 11a2, and the plurality of connecting protrusions are spaced apart to form a first clearance groove 501; wherein, the first beam 40, the connecting protrusions of the heat exchange plate 50 and the bottom plate 111 are stacked, and the stacked portion of the first beam 40, the connecting protrusions and the bottom plate 111 is welded to form a common weld to achieve a fixed connection, and the first beam 40 and the bottom plate 111 can be simultaneously welded through the first clearance groove 501 to form a fixed connection.

[0109] With this configuration, the first beam 40 can be further connected to the bottom plate 111 through the first clearance groove 501, which can further improve the connection strength between the bottom plate 111 and the first beam 40, thereby further improving the overall strength of the first box 11.

[0110] Please refer to Figures 4 to 6 as well as Figure 9 In some embodiments, the base plate 111 protrudes along the second direction Y toward the first beam 40 to form a first protrusion 1111. The first protrusion 1111 passes through the first relief groove 501 and abuts against the first beam 40. The first protrusion 1111 is welded and fixed to the first beam 40.

[0111] In this embodiment, a first protrusion 1111 can be formed on the base plate 111. In this way, when the heat exchange plate 50 is disposed on the surface of the base plate 111, the surface of the heat exchange plate 50 abuts against the surface of the base plate 111, and the first protrusion 1111 is simultaneously inserted into the first relief groove 501 of the heat exchange plate 50 and abuts against the surface of the first beam 40, thereby facilitating the welding operation between the first protrusion 1111 and the first beam 40.

[0112] Optionally, the number of first protrusions 1111 can be one or more; wherein, the specific number of first protrusions 1111 can be the same as the number of first clearance grooves 501, so that each first protrusion 1111 passes through the corresponding first clearance groove 501 and abuts against the first beam 40.

[0113] In some embodiments, the first protrusion 1111 can be formed by stamping the base plate 111.

[0114] With this configuration, the base plate 111 can abut against the first beam 40 and be welded to the first beam 40 through the first protrusion 1111, which can effectively improve the connection reliability between the base plate 111 and the first beam 40.

[0115] Please refer to Figures 4 to 6 In some embodiments, a gap space is formed between the heat exchange plate 50 and the base plate 111, and a filling layer 60 is provided in the gap space.

[0116] Optionally, the base plate 111 may be recessed away from the heat exchange plate 50; or, the heat exchange plate 50 may be recessed away from the base plate 111. In this way, a gap space can be formed between the base plate 111 and the heat exchange plate 50.

[0117] Here, the filling layer 60 refers to the structure used to fill the gap space. Optionally, the filling layer 60 may be, but is not limited to, a foam layer, a cushioning layer, a resin filling layer, etc.

[0118] This configuration allows the filling layer 60 to fill the gap between the heat exchange plate 50 and the bottom plate 111, which helps to improve the structural strength of the bottom of the battery device 100 and thus improves the anti-balling performance of the battery device 100.

[0119] Optionally, in some embodiments, the filler layer 60 can be made of an elastic material, such as a foam layer or a cushioning adhesive layer, thereby making the filler layer 60 elastic. In this way, when the filler layer 60 fills the gap space between the heat exchange plate 50 and the base plate 111, it can reduce the occurrence of abnormal noise and also play a role in buffering and absorbing energy.

[0120] Please refer to Figures 4 to 6 In some embodiments, the base plate 111 includes a first plate portion 111a and a second plate portion 111b arranged sequentially along a first direction X. Along a second direction Z, the second plate portion 111b is offset relative to the first plate portion 111a towards the receiving space 11a. A first beam 40 is disposed on the second plate portion 111b. Along the first direction X, at least a portion of the heat exchange plate 50 is located on the side of the first beam 40 facing the first plate portion 111a, and the electrical component 30 is located on the other side of the first beam 40 away from the first plate portion 111a.

[0121] The first plate portion 111a and the second plate portion 111b refer to two parts of the base plate 111 arranged sequentially along the first direction X.

[0122] Along the first direction X, at least a portion of the heat exchange plate 50 is located on the side of the first beam 40 facing the first plate body 111a, and the electrical component 30 is located on the other side of the first beam 40 away from the first plate body 111a. Furthermore, the first beam 40 is disposed on the second plate body 111b. Thus, at least a portion of the second plate body 111b is located within the second receiving cavity 11a2, and at least a portion of the first plate body 111a is located within the first receiving cavity 11a1.

[0123] It should be understood that the first beam 40 is used to divide and form the first receiving cavity 11a1, and the battery cell 20 is housed in the first receiving cavity 11a1. When the battery cell 20 expands during operation, the first beam 40 can be used to abut and support the battery cell 20 to limit the expansion process of the battery cell 20.

[0124] For example, in some embodiments, a plurality of battery cells 20 may be stacked along a first direction X, and the battery cells 20 located at the ends abut against the wall of the first beam 40.

[0125] When the height of the battery cell 20 along the second direction Z is constant, the position of the first beam 40 relative to the battery cell 20 along the second direction Z and away from the second plate portion 111b remains unchanged. Since the second plate portion 111b is offset relative to the first plate portion 111a along the second direction Z and toward the receiving space 11a, the height of the first beam 40 along the second direction Z will decrease.

[0126] When the battery cell 20 applies a force to the first beam 40, the force will form a torque at the connection between the first beam 40 and the heat exchange plate 50 and the base plate 111; when the height of the first beam 40 along the second direction Z is reduced, the torque formed by the force applied by the battery cell 20 to the first beam 40 will be effectively reduced.

[0127] With this configuration, when the first beam 40 is mounted on the second plate portion 111b, the dimension of the first beam 40 along the second direction Z is reduced. This effectively reduces the moment generated at the connection between the first beam 40 and the base plate 111, thereby reducing the rate of fatigue fracture at the connection between the first beam 40 and the base plate 111 and the heat exchange plate 50. Therefore, the reliability of the connection between the first beam 40 and the base plate 111 and the heat exchange plate 50 is effectively improved. Simultaneously, since the second plate portion 111b is offset relative to the first plate portion 111a along the second direction Z and toward the receiving space 11a, a clearance space is formed on the other side of the second plate portion 111b outside the receiving space 11a, facilitating the placement and clearance of external structures at this location.

[0128] Please refer to Figure 4 and Figure 8 In some embodiments, the base plate 111 extends straight along the first direction X.

[0129] In this embodiment, the base plate 111 extends straight along the first direction X. Thus, within the second receiving cavity 11a2, the base plate 111 will not shift into the receiving space 11a. That is, the base plate 111 will not encroach on the space of the second receiving cavity 11a2 along the second direction Z, thereby ensuring that the size of the second receiving cavity 11a2 along the second direction Z will not decrease.

[0130] This configuration can effectively reduce the spatial impact of the base plate 111 along the second direction Z on the second receiving cavity 11a2, thereby improving the ability of the second receiving cavity 11a2 to accommodate and assemble electrical components 30.

[0131] Please refer to Figure 4 and Figure 5 In some embodiments, the battery device 100 further includes a mounting bracket 70, through which a plurality of electrical components 30 are respectively connected to the base plate 111.

[0132] Understandably, mounting bracket 70 refers to a structural component used for the fixed assembly of the power supply component 30.

[0133] Optionally, the mounting bracket 70 may be configured as a sheet structure, plate structure, block structure, etc. The number of mounting brackets 70 may be any number of one, two, three or more. When there are multiple electrical components 30, the multiple electrical components 30 may be independently mounted on the portion of the base plate 111 in the second receiving cavity 11a2 through the corresponding mounting brackets 70.

[0134] For example, in some embodiments, the electrical component 30 may include a power distribution device (e.g., a high-voltage box). The power distribution device may adopt a distributed structure, that is, the relays, pre-charge resistors and other components of the power distribution device may be distributedly mounted on the base plate 111 by the mounting brackets 70, so as to make full use of the space of the second receiving cavity 11a2, and at the same time, to achieve the purpose of pre-packaging to improve the cycle time of the assembly line.

[0135] With this configuration, multiple electrical components 30 can be connected to the base plate 111 via mounting brackets 70, allowing the multiple electrical components 30 to be distributed and assembled in the second receiving cavity 11a2, thereby fully improving the space utilization efficiency within the second receiving cavity 11a2.

[0136] Please refer to Figure 4 , Figure 5 and Figure 7 In some embodiments, the first housing 11 further includes a second beam 80, which is disposed within the first receiving cavity 11a1 and divides the first receiving cavity 11a1 into a first sub-receiving cavity 11a11 and a second sub-receiving cavity 11a12; the first sub-receiving cavity 11a11 is used to accommodate the battery cell 20; along the first direction X, the first sub-receiving cavity 11a11 is located on the side of the second sub-receiving cavity 11a12 close to the second receiving cavity 11a2.

[0137] The second beam 80 includes, but is not limited to, beam structures such as extruded aluminum beams and profile beams.

[0138] Optionally, the second beam 80 and the first box body 11 can be fixedly connected by means of welding, bonding, bolting, etc. For example, the second beam 80 can be fixed to the bottom plate 111 and the frame 112 of the first box body 11 by welding.

[0139] The second beam 80 is disposed within the first receiving cavity 11a1, and the second beam 80 is capable of dividing the receiving space 11a along the first direction X to form a first sub-receiving cavity 11a11 and a second sub-receiving cavity 11a12. It can be understood that the length direction of the second beam 80 can be disposed along any direction intersecting the first direction X, such as a direction perpendicular to the first direction X; thus, the second beam 80 is divided along opposite sides of the first direction X to form mutually independent first sub-receiving cavities 11a11 and second sub-receiving cavities 11a12.

[0140] For example, in some embodiments, the length direction of the second beam 80 is parallel to the length direction of the first beam 40, and the length direction of the second beam 80 is perpendicular to the first direction X.

[0141] Along the first direction X, the first sub-receiving cavity 11a11 is located on the side of the second sub-receiving cavity 11a12 close to the second receiving cavity 11a2; that is, along the first direction X, the second receiving cavity 11a2, the first sub-receiving cavity 11a11, and the second sub-receiving cavity 11a12 are arranged sequentially.

[0142] The first sub-receiving cavity 11a11 is used to house the battery cell 20. The second sub-receiving cavity 11a12 can buffer and protect the first sub-receiving cavity 11a11. In the event of a collision, the impact force generated by the collision on the battery device 100 can cause the second sub-receiving cavity 11a12 to collapse and deform. As a result, the second sub-receiving cavity 11a12 absorbs the impact force generated by the collision due to the collapse and deformation. This reduces the degree of damage to the battery cell 20 housed in the first sub-receiving cavity 11a11 caused by the impact force, and also reduces the probability of damage to the battery cell 20.

[0143] Please refer to Figure 4 , Figure 5 and Figure 9 In some embodiments, the heat exchange plate 50 includes a heat exchange section 51 and an interface section 52. The heat exchange section 51 is provided with a heat exchange channel 511 for accommodating the heat exchange medium, and the interface section 52 is provided with an interface channel 521 communicating with the heat exchange channel 511. The interface channel 521 is used to introduce the heat exchange medium into the heat exchange channel 511. At least a portion of the heat exchange section 51 is disposed in a first sub-accommodating cavity 11a11, and the interface section 52 is disposed in a second sub-accommodating cavity 11a12.

[0144] The heat exchange plate 50 includes a heat exchange section 51 and an interface section 52; wherein, the heat exchange section 51 refers to the part in which the heat exchange channel 511 is provided, so that the heat exchange plate 50 realizes the heat exchange effect on the battery cell 20 through the heat exchange medium contained in the heat exchange channel 511.

[0145] Optionally, the heat exchange medium may include, but is not limited to, hot water, oil, or other fluids with high specific heat capacity.

[0146] Interface section 52 refers to the part where interface channel 521 is provided. In this way, heat exchange medium can be circulated into heat exchange channel 511 through interface channel 521 to achieve the purpose of heat exchange between heat exchange medium and battery cell 20. It can be understood that interface channel 521 refers to the opening formed on interface section 52 and connected to heat exchange channel 511.

[0147] With this configuration, by separating the interface section 52 with the interface channel 521 from the battery cell 20, the interface channel 521 has a lower impact on the space occupied by the battery cell 20; and when the heat exchange medium leaks from the interface section 52, the impact of the heat exchange medium on the battery cell 20 is lower, thereby reducing the probability of the battery cell 20 short-circuiting.

[0148] Please refer to Figure 4 , Figure 5 and Figure 9 In some embodiments, a portion of the heat exchange plate 50 extends between the second beam 80 and the base plate 111 and is stacked thereon, with the stacked portions of the second beam 80, the heat exchange plate 50, and the base plate 111 being connected and fixed.

[0149] It should be understood that when the heat exchange portion 51 of the heat exchange plate 50 is located in the first sub-receiving cavity 11a11 and the interface portion 52 of the heat exchange plate 50 is located in the second sub-receiving cavity 11a12, a portion of the heat exchange plate 50 will extend between the second beam 80 and the bottom plate 111.

[0150] The second beam 80, heat exchange plate 50 and bottom plate 111 can be combined to form a multi-layered structure; and the overlapping parts of the second beam 80, heat exchange plate 50 and bottom plate 111 are connected and fixed, so that the connection strength formed at the overlapping part of the second beam 80, heat exchange plate 50 and bottom plate 111 is higher, thus improving the overall strength of the first box 11.

[0151] Optionally, the connection method of the second beam 80, heat exchange plate 50 and base plate 111 can be: the overlapping parts of the second beam 80, heat exchange plate 50 and base plate 111 are welded to form a welded part that connects the three, so that the three are fixed together by the welded part; or, the second beam 80, heat exchange plate 50 and base plate 111 can be fixed by fastening with fasteners (such as bolts, screws, etc.) and by welding; or, the second beam 80 and heat exchange plate 50 can be welded together, the heat exchange plate 50 and base plate 111 can be welded together, and the second beam 80 and base plate 111 can also be welded together. At the same time, the second beam 80, heat exchange plate 50 and base plate 111 are welded together to form a welded part that connects the three, so that the three are fixed together by welding.

[0152] With this configuration, the heat exchange plate 50 can extend between the second beam 80 and the bottom plate 111 and form a multi-layered structure with the second beam 80 and the bottom plate 111. By connecting and fixing the overlapping parts of the second beam 80, the heat exchange plate 50 and the bottom plate 111, the overall strength of the first housing 11 can be effectively improved.

[0153] Please refer to Figure 4 , Figure 5 and Figure 9 In some embodiments, the heat exchange plate 50 is provided with a second clearance groove 502, which is located between the second beam 80 and the bottom plate 111. The second clearance groove 502 penetrates the heat exchange plate 50 along the second direction Z, so that a part of the second beam 80 is disposed opposite to the bottom plate 111 through the second clearance groove 502, and the second beam 80 is connected and fixed to the bottom plate 111 through the second clearance groove 502.

[0154] In this embodiment, a through-hole second clearance groove 502 can be opened on the heat exchange plate 50 so that a part of the second beam 80 is disposed opposite to the bottom plate 111 through the second clearance groove 502. In this way, the second beam 80 and the bottom plate 111 can be connected through the second clearance groove 502.

[0155] Optionally, the second clearance groove 502 can be a closed slot structure formed inside the heat exchange plate 50; or, the second clearance groove 502 can be an open groove structure formed at the edge of the heat exchange plate 50 and connected to the outside at the edge. It should be understood that the second clearance groove 502 can penetrate the heat exchange plate 50 along the second direction Z, so that the second beam 80 and the bottom plate 111 located on opposite sides of the second clearance groove 502 can be connected through the second clearance groove 502.

[0156] Optionally, the connection method between the second beam 80 and the base plate 111 includes, but is not limited to, bonding, welding, bolting, etc.

[0157] For example, in some embodiments, the heat exchange plate 50 has a plurality of connecting protrusions protruding from one end along the first direction X and toward the second receiving cavity 11a2, and the plurality of connecting protrusions are spaced apart to form a second clearance groove 502; wherein, the second beam 80, the connecting protrusions of the heat exchange plate 50 and the bottom plate 111 are stacked, and the stacked portions of the second beam 80, the connecting protrusions and the bottom plate 111 are welded to form a common weld to achieve a fixed connection, and the second beam 80 and the bottom plate 111 can be simultaneously welded through the second clearance groove 502 to form a fixed connection.

[0158] With this configuration, the second beam 80 can be further connected to the bottom plate 111 through the second clearance groove 502, which can further improve the connection strength between the bottom plate 111 and the second beam 80, thereby further improving the overall strength of the first box 11.

[0159] Please refer to Figure 4 , Figure 5 and Figure 9 In some embodiments, the base plate 111 protrudes along the second direction Y toward the side of the second beam 80 to form a second protrusion 1112. The second protrusion 1112 passes through the second clearance groove 502 and abuts against the second beam 80. The second protrusion 1112 is welded and fixed to the second beam 80.

[0160] In this embodiment, a second protrusion 1112 can be formed on the base plate 111. When the heat exchange plate 50 is disposed on the surface of the base plate 111, the surface of the heat exchange plate 50 abuts against the surface of the base plate 111, and the second protrusion 1112 simultaneously passes through the second relief groove 502 of the heat exchange plate 50 and abuts against the surface of the second beam 80, thereby facilitating the welding operation between the second protrusion 1112 and the second beam 80.

[0161] Optionally, the number of second protrusions 1112 can be one or more; wherein, the specific number of second protrusions 1112 can be the same as the number of second clearance grooves 502, so that each second protrusion 1112 passes through the corresponding second clearance groove 502 and abuts against the second beam 80.

[0162] In some embodiments, the second protrusion 1112 can be formed by stamping the base plate 111.

[0163] With this configuration, the base plate 111 can abut against the second beam 80 and be welded to the second beam 80 via the second protrusion 1112, which can effectively improve the connection reliability between the base plate 111 and the second beam 80.

[0164] The battery device 100 provided in this application will now be further described through specific embodiments.

[0165] Please refer to Figures 4 to 9In this embodiment, the battery device 100 includes a first housing 11, a battery cell 20, and electrical components 30. The first housing 11 includes a base plate 111, a frame 112, a first beam 40, a second beam 80, and a heat exchange plate 50.

[0166] The base plate 111 and the frame 112 enclose a receiving space 11a, and the first beam 40 and the second beam 80 are spaced apart within the receiving space 11a. The first beam 40 divides the receiving space 11a into a first receiving cavity 11a1 and a second receiving cavity 11a2 along the first direction X. At the same time, the second beam 80 divides the first receiving cavity 11a1 into a first sub-receiving cavity 11a11 and a second sub-receiving cavity 11a12. The second receiving cavity 11a2, the first sub-receiving cavity 11a11, and the second sub-receiving cavity 11a12 are arranged sequentially along the first direction X.

[0167] The heat exchange plate 50 is disposed within the first receiving cavity 11a1 and connected to the base plate 111. In a projection plane perpendicular to the second direction Z, the orthographic projection of the heat exchange plate 50 is either adjacent to or separate from the orthographic projection edge of the second receiving cavity 11a2. Along the first direction X, a portion of the heat exchange plate 50 extends between the first beam 40 and the base plate 111 and is stacked thereon. The stacked portions of the first beam 40, the heat exchange plate 50, and the base plate 111 are welded together to form a welded joint connecting all three. Simultaneously, along the first direction X, a portion of the heat exchange plate 50 extends between the second beam 80 and the base plate 111 and is stacked thereon. The stacked portions of the second beam 80, the heat exchange plate 50, and the base plate 111 are welded together to form a welded joint connecting all three.

[0168] The heat exchange plate 50 includes a heat exchange section 51 and an interface section 52. The heat exchange section 51 is provided with a heat exchange channel 511 for accommodating the heat exchange medium. The interface section 52 is provided with an interface channel 521 that communicates with the heat exchange channel 511. The interface channel 521 is used to introduce the heat exchange medium into the heat exchange channel 511. The heat exchange section 51 is disposed in a first sub-accommodating cavity 11a11, and the interface section 52 is disposed in a second sub-accommodating cavity 11a12.

[0169] In some embodiments, the base plate 111 includes a first plate portion 111a and a second plate portion 111b arranged sequentially along a first direction X; wherein, along a second direction Z, the second plate portion 111b is offset relative to the first plate portion 111a toward the receiving space 11a. A first beam 40 is disposed on the second plate portion 111b, and along the first direction X, at least a portion of the heat exchange plate 50 is located on the side of the first beam 40 toward the first plate portion 111a, and the electrical component 30 is located on the other side of the first beam 40 away from the first plate portion 111a.

[0170] In other embodiments, the base plate 111 extends straight along the first direction X.

[0171] The battery cell 20 is housed in the first sub-receiving cavity 11a11, and the electrical component 30 can be mounted on the base plate 111 in the second receiving cavity 11a2 via the mounting bracket 70.

[0172] Please refer to Figure 1 , Figure 2 and Figure 4 This application embodiment also provides an electrical device, which includes a battery device 100 as described above, and the battery device 100 is used to provide electrical energy.

[0173] The electrical device provided in this application includes the battery device 100 described above. Based on the fact that the battery device 100 can optimize the assembly space of the electrical components 30, the reliability of the electrical device is better.

[0174] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized in that, include: The first housing includes a base plate, a frame, a first beam, and a heat exchange plate. The base plate and the frame enclose a receiving space. The first beam is disposed within the receiving space and divides the receiving space into a first receiving cavity and a second receiving cavity distributed along a first direction. The heat exchange plate is disposed within the first receiving cavity and connected to the base plate. In a projection plane perpendicular to a second direction, the orthographic projection of the heat exchange plate is either connected to or separated from the orthographic projection edge of the second receiving cavity. The first direction is perpendicular to the second direction. A battery cell is housed in the first receiving cavity, and the battery cell is disposed on the heat exchange plate; as well as An electrical component, electrically connected to the battery cell, is housed within the second receiving cavity.

2. The battery device according to claim 1, characterized in that: A portion of the heat exchange plate extends between the first beam and the base plate and is stacked thereon, with the stacked portions of the first beam, the heat exchange plate, and the base plate being connected and fixed.

3. The battery device according to claim 2, characterized in that: The heat exchange plate is provided with a first clearance groove, which is located between the first beam and the bottom plate. The first clearance groove penetrates the heat exchange plate along the second direction, so that a portion of the first beam is disposed opposite to the bottom plate through the first clearance groove, and the first beam is connected and fixed to the bottom plate through the first clearance groove.

4. The battery device according to claim 3, characterized in that: The base plate is provided with a first protrusion protruding on one side of the first beam along the second direction. The first protrusion passes through the first clearance groove and abuts against the first beam. The first protrusion is welded and fixed to the first beam.

5. The battery device according to claim 1, characterized in that: A gap space is formed between the heat exchange plate and the base plate, and a filling layer is provided in the gap space.

6. The battery device according to any one of claims 1 to 5, characterized in that: The base plate includes a first plate portion and a second plate portion arranged sequentially along the first direction, and along the second direction, the second plate portion is offset relative to the first plate portion toward the receiving space. The first beam is disposed on the second plate portion. Along the first direction, at least a portion of the heat exchange plate is located on the side of the first beam facing the first plate portion, and the electrical component is located on the other side of the first beam away from the first plate portion.

7. The battery device according to any one of claims 1 to 5, characterized in that: The base plate extends straight along the first direction.

8. The battery device according to any one of claims 1 to 5, characterized in that: The battery device also includes a mounting bracket, and the plurality of electrical components are respectively connected to the base plate through the mounting bracket.

9. The battery device according to any one of claims 1 to 5, characterized in that: The first housing further includes a second beam, which is disposed within the first receiving cavity and divides the first receiving cavity into a first sub-receiving cavity and a second sub-receiving cavity; the first sub-receiving cavity is used to accommodate the battery cell; along the first direction, the first sub-receiving cavity is located on the side of the second sub-receiving cavity closer to the second receiving cavity.

10. The battery device according to claim 9, characterized in that: The heat exchange plate includes a heat exchange section and an interface section. The heat exchange section is provided with a heat exchange channel for accommodating the heat exchange medium. The interface section is provided with an interface channel communicating with the heat exchange channel. The interface channel is used to introduce the heat exchange medium into the heat exchange channel. At least a portion of the heat exchange section is disposed in the first sub-accommodating cavity, and the interface section is disposed in the second sub-accommodating cavity.

11. The battery device according to claim 9, characterized in that: A portion of the heat exchange plate extends between the second beam and the base plate and is stacked thereon, with the stacked portions of the second beam, the heat exchange plate, and the base plate connected and fixed.

12. The battery device according to claim 11, characterized in that: The heat exchange plate is provided with a second clearance groove, which is located between the second beam and the bottom plate. The second clearance groove penetrates the heat exchange plate along the second direction, so that a portion of the second beam is disposed opposite to the bottom plate through the second clearance groove, and the second beam is connected and fixed to the bottom plate through the second clearance groove.

13. The battery device according to claim 12, characterized in that: The base plate is provided with a second protrusion protruding towards the side of the second beam in the second direction. The second protrusion passes through the second clearance groove and abuts against the second beam. The second protrusion is welded and fixed to the second beam.

14. An electrical appliance, characterized in that: The electrical device includes a battery device as described in any one of claims 1 to 13, the battery device being used to provide electrical energy.

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