Battery device, power utilization device and energy storage device

Abstract

The utility model provides a battery device, a power utilization device and an energy storage device, and belongs to the technical field of batteries. The battery device comprises a box body, a mounting part and a plurality of single batteries, the box body is provided with a first bottom wall; the mounting part is accommodated in the box body, the mounting part is provided with a second bottom wall facing the first bottom wall, the second bottom wall is connected to the first bottom wall, the mounting part is provided with a plurality of accommodating areas arranged along a first direction, a plurality of battery monomers arranged along a second direction are detachably accommodated in each accommodating area, and the first direction and the second direction are intersected. And when the single batteries break down, each single battery can be detached and replaced independently, and the whole battery device does not need to be replaced, so that the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device, a power utilization device and an energy storage device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of society. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] In the related art, a plurality of battery monomers are arranged in the battery. When some of the battery monomers in the battery fail, timely maintenance is required. How to reduce the maintenance cost has always been a problem worth attention. UTILITY MODEL CONTENT

[0004] The present application aims to at least solve one of the technical problems in the background art. To this end, one object of the present application is to provide a battery device, a power utilization device and an energy storage device to reduce the maintenance cost of the battery.

[0005] An embodiment of the first aspect of the present application provides a battery device, comprising: a box body, a mounting portion and a plurality of battery monomers; the box body has a first bottom wall; the mounting portion is accommodated in the box body, and the mounting portion has a second bottom wall facing the first bottom wall, the second bottom wall is connected to the first bottom wall, and the mounting portion has a plurality of accommodation areas arranged in a first direction, each accommodation area can detachably accommodate a plurality of battery monomers arranged in a second direction, wherein the first direction and the second direction are arranged intersectingly.

[0006] In the technical solution of the embodiment of the present application, when the battery monomers fail, each battery monomer can be individually disassembled and replaced, without the need to replace the entire battery device, thereby reducing the maintenance cost.

[0007] In some embodiments, an end of the accommodation area away from the second bottom wall has a first opening for exposing an electrode terminal of the battery monomer, and a blocking piece is arranged at the first opening, the blocking piece is detachably connected to the mounting portion, the blocking piece is used to press the battery monomer in the accommodation area against the second bottom wall, and the second bottom wall is bonded to the first bottom wall through a bonding layer.

[0008] In this embodiment, the blocking piece is arranged at the opening of the accommodation area, the blocking piece can be detachably connected to the mounting portion, the detachable connection of the battery monomer can be achieved, and the structure is simple and easy to implement. In addition, the electrode terminal can be exposed through the first opening to facilitate connection with the bus and sampling assembly.

[0009] In some embodiments, the mounting portion is provided with a slot extending along the second direction, the stopper includes a stopper portion and a connecting portion connected to the stopper portion, the connecting portion is capable of sliding in the slot along the second direction, and the stopper portion is used to press against the battery monomer.

[0010] In the embodiment, the detachable connection of the stopper and the mounting portion can be achieved by providing the slot and the connecting portion, the structure is simple, easy to realize, and no additional fasteners are needed, and the mounting and dismounting speed is improved.

[0011] In some embodiments, the first opening is provided with a stopper at each end along the first direction, the stopper extends along the second direction in a strip shape, and the surface of the stopper portion used to press against the battery monomer is covered with a buffer layer; the thickness of the stopper portion in the direction perpendicular to the stopper portion is the thickness of the stopper portion, and the thickness H1 of the stopper portion satisfies 1mm≤H1≤4mm.

[0012] By setting the thickness of the stopper portion to be not less than 1mm, the strength of the stopper portion can be improved, and the fixing effect of the battery monomer is improved, and by setting the thickness of the stopper portion to be not more than 4mm, the occupation of the internal space of the battery device can be reduced, and the volume of the battery device is reduced, and the energy density is improved.

[0013] In some embodiments, the battery monomer has two electrode terminals, the two electrode terminals are arranged at intervals along the first direction or the second direction, and the electrode terminals protrude from the stopper in the direction away from the second bottom wall.

[0014] In the embodiment, by setting the arrangement direction of the electrode terminals to be parallel to the first direction or the second direction, the close arrangement of the battery monomers in the containing area can be achieved, and the energy density of the battery device is improved. At the same time, since the electrode terminals protrude from the stopper, the connection of the electrode terminals with the bus assembly or the sampling assembly can be facilitated.

[0015] In some embodiments, the box body further includes a first side wall connected to the edge of the first bottom wall, the first size D1 of the top end of the first side wall away from the first bottom wall and the second size D2 of the stopper away from the first bottom wall satisfy D1

[0016] In the embodiment, by setting the first side wall to be lower than the stopper, the sliding of the stopper relative to the mounting portion can be facilitated, the dismounting of the battery monomer can be achieved without dismounting the mounting portion, the replacement efficiency of the battery monomer is improved, and at the same time, since the mounting portion does not need to be dismounted when the battery monomer is repaired, the mounting portion can be fixed by using an adhesive layer, the space required for mounting is reduced, and the energy density of the battery device can be improved.

[0017] In some embodiments, the mounting portion comprises a plurality of first partitions arranged at intervals along the first direction, each of the plurality of first partitions is connected to the second bottom wall away from the first bottom wall, and each of the plurality of first partitions, together with the part of the second bottom wall between two adjacent first partitions, encloses a receiving area.

[0018] In the embodiment, the mounting portion is divided into a plurality of receiving areas by the plurality of first partitions, so that the volume of the mounting portion is reduced and the space utilization of the battery device is improved.

[0019] In some embodiments, the battery device further comprises a heat exchange portion, and the heat exchange portion comprises a first heat exchange member, the first heat exchange member constitutes the first bottom wall, and the first heat exchange member is connected to the second bottom wall through an adhesive layer.

[0020] In the embodiment, the heat exchange portion is arranged by reasonably utilizing the space of the box, so that the heat exchange and cooling of the battery cell are realized from the bottom of the battery cell.

[0021] In some embodiments, the mounting portion comprises a plurality of mounting members arranged along the first direction, each of the mounting members has at least one receiving area, and each of the mounting members has a third bottom wall facing the first bottom wall, and the third bottom wall of each of the mounting members constitutes the second bottom wall.

[0022] In the embodiment, the plurality of mounting members are arranged to realize the detachable installation of the battery cell, and the space for heat exchange of the battery cell is provided due to the independence of each of the mounting members.

[0023] In some embodiments, each of the mounting members further comprises a plurality of second partitions arranged at intervals along the first direction, each of the second partitions is connected to the third bottom wall, and each of the second partitions, together with at least part of the third bottom wall between two adjacent second partitions, encloses a receiving area.

[0024] In the embodiment, the plurality of second partitions are arranged to divide the mounting member into one or more receiving areas, so that the volume of the mounting member is reduced and the space utilization of the battery device is improved.

[0025] In some embodiments, the battery device further comprises a heat exchange portion, the heat exchange portion comprises a second heat exchange member, and the second heat exchange member is arranged between two adjacent mounting members; and / or, the battery device further comprises a heat exchange portion, the heat exchange portion comprises a third heat exchange member, the third heat exchange member constitutes the first bottom wall, and the third heat exchange member is connected to the second bottom wall through an adhesive layer.

[0026] In the embodiment, the plurality of mounting members are arranged to flexibly utilize the gaps between the mounting members, and the heat exchange portion is arranged between the mounting members and / or at the bottom of the mounting member, so that the heat exchange of the battery cell is realized.

[0027] In some embodiments, the first direction is parallel to a maximum expansion direction of the battery cell, and a gasket is arranged between a side surface of the battery cell at one end along the first direction and an inner surface of the accommodation region, the gasket being provided with an opening for allowing the battery cell to expand along the first direction.

[0028] In the present embodiment, by arranging the gasket, space is provided for expansion of the battery cell, thereby improving the reliability of the battery device.

[0029] In some embodiments, the battery device further comprises a heat exchange portion, and the mounting portion has a heat exchange wall in heat-conducting connection with the heat exchange portion, and a heat-conducting member is arranged between the battery cell and the heat exchange wall.

[0030] The heat-conducting member can accelerate the heat transfer rate between the battery cell and the mounting portion, thereby improving the heat-conducting effect between the battery cell and the heat exchange portion, and achieving rapid heat exchange.

[0031] Embodiments of the second aspect of the present application provide a power utilization device, which comprises the battery device in the above embodiments, and the battery device is used to provide electric energy.

[0032] Embodiments of the third aspect of the present application provide an energy storage device, which comprises the battery device in the above embodiments, and the energy storage device is used to store electric energy.

[0033] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, and to be implemented in accordance with the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0034] In the drawings, like reference numerals refer to same or similar elements throughout the several views. These drawings are not necessarily to scale. It should be understood that these drawings only depict some embodiments in accordance with the present disclosure and should not be considered as limiting the scope of the present disclosure.

[0035] Figure 1 A structural schematic diagram of a vehicle is provided for some embodiments of the present application;

[0036] Figure 2 An exploded structural schematic diagram of a battery device is provided for some embodiments of the present application;

[0037] Figure 3 An exploded structural schematic diagram of a battery cell is provided for some embodiments of the present application;

[0038] Figure 4 An exploded structural schematic diagram of a battery device is provided for some embodiments of the present application;

[0039] Figure 5 A top view of a battery device provided for some embodiments of the present application;

[0040] Figure 6 A side view of Figure 5

[0041] Figure 7 A partial schematic view of A in Figure 6

[0042] Figure 8 A structural schematic view of the mounting portion and the battery cell in Figure 4

[0043] Figure 9 A side view of Figure 8

[0044] Figure 10 A partial structural schematic view in Figure 9

[0045] Figure 11 A partial schematic view of B in Figure 10

[0046] Figure 12 A schematic view of the arrangement of the battery cells in a single accommodating area in Figure 8

[0047] Figure 13 A partial schematic view of C in Figure 12

[0048] Figure 1 A structural schematic view of the mounting portion provided for an embodiment of the present application;

[0049] Figure 15 A structural schematic view of the mounting portion provided for another embodiment of the present application;

[0050] Figure 16 A structural schematic view of the mounting portion provided for another embodiment of the present application;

[0051] Figure 17 A structural schematic view of the spacer in Figure 14

[0052] Explanation of reference signs:

[0053] Vehicle 1000;

[0054] Battery device 100, controller 200, motor 230;

[0055] ​​​​​​​​​Battery cell 11, electrode terminal 111, end cover 12, shell 13, electrode assembly 14, box 20, first part 21, second part 22, first bottom wall 211, first side wall 212;

[0056] Mounting portion 300, second bottom wall 310, first opening 311, adhesive layer 320, containing area 330, slot 340, first partition 350, mounting piece 360, third bottom wall 361, second partition 362, heat exchange wall 370;

[0057] Resisting piece 400, resisting portion 410, buffer layer 411, connecting portion 420;

[0058] Heat exchange portion 500, first heat exchange piece 510, second heat exchange piece 520, third heat exchange piece 530;

[0059] Pad partition 600, opening 610;

[0060] Thermal conduction piece 700;

[0061] Bottom guard plate 800. DETAILED DESCRIPTION

[0062] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0063] 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising" and "having", and any variations thereof, as used in the specification and claims and the aforementioned description of the drawings, are intended to cover not exclusively inclusive.

[0064] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0065] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0066] 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 three cases: a exists alone, a and b exist simultaneously, and b exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0067] 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).

[0068] 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.

[0069] 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.

[0070] Currently, the application of rechargeable batteries is becoming increasingly widespread, judging from market trends. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in various electronic devices, such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As the application areas of rechargeable batteries continue to expand, the market demand is also constantly increasing.

[0071] In related technologies, in order to improve the energy density and space utilization of batteries, CTP (Cell to Pack, module-free technology) is usually used to encapsulate battery cells, that is, to directly bond battery cells to the casing.

[0072] However, when a single battery cell fails, it cannot be repaired individually because it is bonded to the casing, and the entire battery needs to be replaced, resulting in high battery repair costs.

[0073] To address the aforementioned issues, this application provides a battery device, a power-consuming device, and an energy storage device. The battery device includes a housing, a mounting portion, and multiple battery cells. The housing has a first bottom wall. The mounting portion is housed within the housing and has a second bottom wall facing the first bottom wall. The second bottom wall is connected to the first bottom wall. The mounting portion has multiple receiving areas arranged along a first direction, and each receiving area detachably houses multiple battery cells arranged along a second direction, wherein the first and second directions intersect. When a battery cell malfunctions, each battery cell can be individually disassembled and replaced without replacing the entire battery device, thus reducing maintenance costs.

[0074] The technical solutions described in the embodiments of this application are applicable to battery devices, electrical devices using battery devices, and energy storage devices.

[0075] The energy storage device utilizing battery devices as a power source in this application embodiment includes one or more battery clusters to enhance the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0076] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical devices during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices. As an example, the energy storage device is an energy storage container or an energy storage cabinet.

[0077] In this application embodiment, the power-consuming device using a battery as a power source 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.

[0078] It should be understood that the technical solutions described in the embodiments of this application are not limited to the energy storage devices and electrical appliances described above. However, for the sake of brevity, the following embodiments all use vehicles as an example of electrical appliances.

[0079] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 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 installed 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 230. The controller 200 is used to control the battery device 100 to supply power to the motor 230, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0080] 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.

[0081] Please refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery provided in some embodiments of this application.

[0082] The battery device 100 mentioned in the embodiments of this application may include a plurality of battery cells 11, which are connected in series, parallel or mixed via a busbar.

[0083] In some embodiments, the battery device may include multiple battery modules, each consisting of multiple battery cells 11 arranged and fixed together to form a single module. As an example, a battery module may be formed by bundling multiple battery cells 11 together with cable ties.

[0084] In some embodiments, such as Figure 2 As shown, the battery device 100 can be a battery pack, which includes a housing 20 and multiple battery cells housed within the housing 20. The housing 20 can be a simple three-dimensional structure such as a single cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of combinations of simple cuboids, cylinders, or spheres. The material of the housing 20 can be an alloy such as aluminum alloy or iron alloy, a polymer such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0085] As an example, the housing 20 may include a first part 21 and a second part 22. The first part 21 and the second part 22 are fastened together to form a closed space inside the housing 20 to house the battery cells. Here, "closed" refers to covering or closing, and can be either non-sealed or sealed to prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells 11. The first part 21 may be a top cover or a bottom plate.

[0086] As an example, the housing 20 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 20 forms an enclosed space to accommodate individual battery cells.

[0087] In some embodiments, the housing 20 may be part of the vehicle's chassis structure. For example, a portion of the housing 20 may be at least a portion of the vehicle's floor, or a portion of the housing 20 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0088] The battery cell 11 provided in the embodiments of this application can be a secondary battery. A secondary battery refers to a battery cell 11 that can be used again after being discharged by recharging to activate the active material.

[0089] The battery cell 11 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.

[0090] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application. The battery cell 11 refers to the smallest unit that makes up the battery. For example... Figure 3 The battery cell 11 includes an end cap 12, a housing 13, an electrode assembly 14, and other functional components.

[0091] End cap 12 refers to a component that covers the opening of housing 13 to isolate the internal environment of battery cell 11 from the external environment. The shape of end cap 12 can be adapted to the shape of housing 13 to fit it. In some embodiments, end cap 12 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 12 is less prone to deformation under pressure and impact, enabling battery cell 11 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 111 can be provided on end cap 12. Electrode terminals 111 can be used for electrical connection with electrode assembly 14 to output or input electrical energy to battery cell 11. In some embodiments, end cap 12 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 11 reaches a threshold. The material of end cap 12 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 12. The insulating element can be used to isolate the electrical connection components within the housing 13 from the end cap 12 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0092] The housing 13 is a component used to cooperate with the end cap 12 to form the internal environment of the battery cell 11. This internal environment can accommodate the electrode assembly 14, electrolyte, and other components. The housing 13 and the end cap 12 can be independent components. An opening can be provided on the housing 13, and the end cap 12 closes the opening to form the internal environment of the battery cell 11. Alternatively, the end cap 12 and the housing 13 can be integrated. Specifically, the end cap 12 and the housing 13 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 13, the end cap 12 closes the housing 13. The housing 13 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 13 can be determined according to the specific shape and size of the electrode assembly 14. The housing 13 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0093] Electrode assembly 14 is the component in the battery cell 11 where the electrochemical reaction takes place. The housing 13 may contain one or more electrode assemblies 14. Electrode assembly 14 is mainly formed by winding and forming positive and negative electrode plates, and a separator is typically provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the electrode assembly.

[0094] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments; Figure 2 This is an exploded view of the battery device provided in some embodiments of this application; Figure 3This is an exploded structural diagram of a battery cell provided in some embodiments of this application; Figure 4 This is an exploded view of the battery device provided in some embodiments of this application; Figure 5 Top view of a battery device provided for some embodiments of this application; Figure 6 for Figure 5 Side view; Figure 7 for Figure 6 A partial schematic diagram of point A in the middle; Figure 8 for Figure 4 Schematic diagram of the mounting section and battery cells; Figure 9 for Figure 8 Side view; Figure 10 for Figure 9 A partial structural diagram; Figure 11 for Figure 10 A partial schematic diagram at point B in the middle; Figure 12 for Figure 8 A schematic diagram showing the arrangement of individual battery cells in a single storage area; Figure 13 for Figure 12 A partial schematic diagram at point C.

[0095] Please refer to Figures 1 to 13 This application provides a battery device 100, including: a housing 20, a mounting part 300, and a plurality of battery cells 11; the housing 20 has a first bottom wall 211; the mounting part 300 is housed in the housing 20, and the mounting part 300 has a second bottom wall 310 facing the first bottom wall 211, the second bottom wall 310 being connected to the first bottom wall 211, and the mounting part 300 having a plurality of receiving areas 330 arranged along a first direction X, each receiving area 330 detachably accommodating a plurality of battery cells 11 arranged along a second direction Y, wherein the first direction X and the second direction Y are intersected.

[0096] The housing 20 may have a first bottom wall 211 and a first side wall 212, which may form a second part 22 of the housing. In some embodiments, the first bottom wall 211 may be a bottom plate of the housing 20, such as an aluminum plate. The aluminum plate has a certain strength and is lightweight, which can improve the energy density of the battery cells. The first side wall 212 may be a side plate or side beam of the housing. The space enclosed by the first bottom wall 211 and the first side wall 212 may be used to accommodate multiple battery cells 11.

[0097] The mounting part 300 can be accommodated in the housing 20. The mounting part 300 may have a second bottom wall 310 facing the first bottom wall 211. The first bottom wall 211 and the second bottom wall 310 are connected, for example, by adhesive bonding, or by welding or screwing.

[0098] The mounting portion 300 may have a plurality of receiving areas 330 arranged along a first direction, each receiving area 330 accommodating a plurality of battery cells 11 arranged along a second direction. The first direction X and the second direction Y may intersect; in some embodiments, the first direction X may be perpendicular to the second direction Y. For ease of explanation, the following description assumes that the first direction X and the second direction Y are perpendicular to each other. The mounting portion 300 may be a shell-like structure, such as a cuboid shell structure, whose interior may be divided into a plurality of receiving areas 330 arranged along the first direction X. Each receiving area 330 may have the same shape to accommodate a plurality of battery cells 11.

[0099] In this embodiment, the battery cell 11 is detachably installed within the receiving area 330. Specifically, the battery cell 11 can be connected in various detachable ways, such as snap-fit ​​or screw-fit. For example, the mounting part 300 can be provided with multiple slots, each slot capable of engaging and connecting one battery cell. Alternatively, the mounting part 300 can have a screw-fit pressure plate, which can be installed in the opening of the receiving area, and the pressure plate can secure the battery cell within the receiving area.

[0100] It is understood that the mounting section 300 can serve as a mounting carrier for the battery cell 11. The battery cell 11 can be installed within the receiving area 330 of the mounting section, and then the battery cell is connected to the housing 20 through the connection between the mounting section and the housing. Since the battery cell 11 can be detached from the mounting section 300, it can be removed from the housing by removing the battery cell 11 from the receiving area, thereby achieving independent installation and removal of the battery cell.

[0101] In some embodiments, such as Figure 4 As shown, a bottom protective plate 800 can also be provided at the bottom of the first bottom wall 211. The bottom protective plate 800 can protect the first bottom wall 211 and improve the structural rigidity and reliability of the battery device.

[0102] In this embodiment, when a single battery cell fails, it can be removed from the housing area and then taken out of the casing. This allows for individual disassembly and replacement of each battery cell. Compared to the related technologies where battery cells are glued and installed inside the casing, this method enables individual disassembly and repair of each battery cell without replacing the entire battery pack, thus reducing maintenance costs.

[0103] According to some embodiments of this application, the receiving area 330 has a first opening 311 at one end away from the second bottom wall 310 for exposing the electrode terminals 111 of the battery cell 11, and a stop member 400 is provided at the first opening 311. The stop member 400 is detachably connected to the mounting part 300 and is used to press the battery cell 11 in the receiving area 330 against the second bottom wall 310. The second bottom wall 310 is bonded to the first bottom wall 211 by an adhesive layer.

[0104] In this embodiment, the second bottom wall 310 can be connected to the first bottom wall 211 by an adhesive layer 320, and the two can be bonded together by an adhesive layer such as structural adhesive to achieve the connection between the mounting part 300 and the box body 20.

[0105] Each receiving area 330 may have a first opening 311 at its top opposite to the second bottom wall 310, and a stop member 400 may be provided at each of the first openings 311. The stop member 400 may be plate-shaped, block-shaped, mesh-like, etc., and may be detachably connected to the mounting part 300, for example, by means of screwing, snap-fitting, etc., to connect the stop member 400 and the mounting part 300.

[0106] It is understood that the abutment 400 can be disposed opposite to the second bottom wall 310 along the third direction Z. It can be connected to the top of the inner sidewall of the receiving area. When the abutment 400 is installed at the first opening 311 of the receiving area, the abutment 400 and the second bottom wall 310 can press the battery cell 11 from both sides, thereby achieving a secure installation of the battery cell 11 and the mounting part 300. Furthermore, the width of the receiving area along the first direction X can be approximately the same as the size of the battery cell 11, thereby clamping the battery cell 11 from both sides along the first direction X, further securing the battery cell 11. The third direction Z can be perpendicular to both the first and second directions.

[0107] In addition, the first opening 311 can also be used to expose the electrode terminal 111. It is understood that the blocking member 400 does not completely close the first opening 311, and the blocking member 400 does not cover the electrode terminal 111. The first opening 311 can be in an uncovered state at the electrode terminal 111, so that the electrode terminal 111 can be exposed outside the mounting part 300, so as to facilitate the welding of bus components such as circuit breakers or connection with sampling components such as temperature and voltage.

[0108] It is understandable that by disassembling the retaining part 400, the first opening 311 can be fully exposed, so that the battery cell 11 can be placed into the receiving area or removed from the receiving area, thus realizing the detachable connection of the battery cell.

[0109] This embodiment achieves detachable connection of individual battery cells by providing a stopper at the opening of the receiving area. This stopper is detachably connected to the mounting portion, and the structure is simple and easy to implement. Furthermore, the first opening exposes the electrode terminals for easy connection to the bus and sampling components.

[0110] Furthermore, by bonding the second bottom wall to the first bottom wall, additional installation structures can be reduced, the energy density of the battery device can be increased, and the individual battery cells can be disassembled without significantly affecting the volume utilization and structural rigidity of the CTP, thereby reducing maintenance costs and balancing the energy density and maintenance costs of the battery device.

[0111] It is understandable that traditional CTP structures require beams to be set inside the box to divide the space inside the box, and battery cells to be bonded in each space. However, in this embodiment, by setting up a mounting part, the second bottom wall of the mounting part can be a thin plate structure, which can not have too much impact on the volume utilization of the original CTP, and can also realize the disassembly of battery cells, reducing maintenance costs.

[0112] According to some embodiments of this application, such as Figure 11 As shown, the mounting part 300 is provided with a slot 340 extending along the second direction Y. The abutment 400 includes an abutment part 410 and a connecting part 420 connected to the abutment part 410. The connecting part 420 can slide in the slot 340 along the second direction Y. The abutment part 410 is used to press against the battery cell 11.

[0113] In this embodiment, the abutment 400 may include an abutment portion 410 and a connecting portion 420. The abutment portion 410 may be disposed opposite to the second bottom wall 310, thereby being used to press against the battery cell 11. The connecting portion 420 may be connected to one side of the abutment portion 410 along the first direction X, and may be used to connect with the mounting portion 300.

[0114] A slot 340 may be provided at the top of the mounting portion 300 near the first opening 311. The slot 340 may extend along the second direction Y, and both ends may penetrate the mounting portion. That is, the slot 340 may be elongated. The side of the slot 340 facing the electrode terminal 111 may also have an opening so that the abutment protrudes from the opening outside the slot 340. The cross-sectional shape of the connecting portion 420 may be consistent with the cross-sectional shape of the slot 340, thereby realizing the mating connection between the two to connect the abutment to the mounting portion. For example, the slot 340 may be a T-shaped groove, and the connecting portion 420 may also be a T-shaped structure. The connecting portion 420 may slide along the second direction Y in the slot 340. Of course, the slot and the connecting portion may also have other shapes, such as spheres.

[0115] It is understood that the connecting part 420 can slide along the second direction Y into the slot 340, thereby cooperating with the slot to connect the stop 400 and the mounting part 300. Of course, the connecting part 420 can also slide along the second direction Y and separate from the slot 340, thereby realizing the disassembly of the stop 400 and the mounting part 300, making disassembly more convenient.

[0116] In this embodiment, the detachable connection between the stop and the mounting part can be achieved by setting the slot and the connecting part. The structure is simple, easy to implement, and does not require additional fasteners, thus improving the speed of installation and disassembly.

[0117] According to some embodiments of this application, such as Figure 11 As shown, a stop member 400 is provided at each end of the first opening 311 along the first direction X. The stop member 400 extends in a strip shape along the second direction Y, and the stop part 410 is used to press against the surface of the battery cell 11 and is covered with a buffer layer 411. The thickness of the stop part 410 is the dimension perpendicular to the direction of the stop part 410, and the thickness H1 of the stop part 410 satisfies 1mm≤H1≤4mm.

[0118] In this embodiment, the blocking part 410 can be a planar plate structure. The direction perpendicular to the blocking part 410, for example, the third direction Z represents the thickness direction of the blocking part 410. The size of the blocking part 410 in this direction, that is, the thickness H1, can be in the range of 1mm to 4mm.

[0119] In other embodiments, H1 may have other ranges, such as 1 mm ≤ H1 ≤ 3.5 mm, or 1.5 mm ≤ H1 ≤ 3.5 mm, or 1.5 mm ≤ H1 ≤ 4 mm.

[0120] In some embodiments, H1 can be 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm, etc.

[0121] In addition, the surface of the abutment 410 may be covered with a buffer layer 411. The buffer layer may be a structure with a certain degree of deformability, such as being made of rubber or similar materials. It can act as a buffer when the abutment presses against the battery cell, thus improving the problem of the battery cell being easily damaged. At the same time, when the abutment slides along the second direction, the buffer layer can also reduce the friction between the battery cell and the abutment, thus improving the situation where the battery cell is easily worn.

[0122] The thickness of the abutment is not less than 1mm, which can improve the strength of the abutment and improve the fixing effect of the battery cell. The thickness of the abutment is not more than 4mm, which can reduce the space occupied by the battery device, thereby reducing the size of the battery device and increasing its energy density.

[0123] In some implementations, such as Figure 11 The mounting portion can also be a shell-like structure composed of multiple plates, and the thickness H2 of each plate can be in the range of 1mm to 4mm. In some embodiments, the thickness H2 of the mounting portion can be 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm, etc. Of course, the thickness H2 of the mounting portion can also be 1mm to 3.5mm, or 1.5mm to 3.5mm, or 1.5mm to 3.5mm, etc.

[0124] By setting the thickness of the mounting part to be no less than 1mm, the strength of the mounting part can be improved, and the fixing effect of the battery cell can be improved. If the thickness of the mounting part is no more than 4mm, the space occupied by the internal space of the battery device can be reduced, thereby reducing the size of the battery device and increasing its energy density.

[0125] According to some embodiments of this application, the battery cell 11 has two electrode terminals 111, which are arranged at intervals along a first direction X or a second direction Y, and the electrode terminals 111 protrude from the abutment 400 in a direction away from the second bottom wall 310.

[0126] In this embodiment, the two electrode terminals 111 can be the positive terminal and the negative terminal, respectively. It can be understood that the two electrode terminals 111 can be spaced apart along the length of the battery cell 11.

[0127] like Figure 8 In this embodiment, multiple battery cells 11 in each receiving area 330 can be arranged along the second direction Y, which can be parallel to the length direction of the battery cell 11, that is... Figure 8 In this configuration, the two electrode terminals of each battery cell 11 can also be arranged along the second direction Y, thereby increasing the contact area between the battery cell 11 and the stop member 400, and thus improving the reliability of the connection between the battery cell 11 and the mounting part.

[0128] It is understood that in another embodiment, the first direction X can be parallel to the length direction of the battery cell 11, that is, the two electrode terminals of each battery cell 11 can also be arranged along the first direction X, and the connection between the battery cell and the mounting part can also be realized.

[0129] likeFigure 11 The electrode terminal 111 can protrude from the stop member 400 in a direction away from the second bottom wall 310. That is, the maximum distance between the electrode terminal 111 and the second bottom wall 310 can be greater than the maximum distance between the stop member 400 and the second bottom wall, so as to facilitate the connection of the electrode terminal with the bus assembly or sampling assembly.

[0130] This embodiment achieves a tight arrangement of battery cells within the housing area by aligning the electrode terminals with either the first or second direction, thereby increasing the energy density of the battery device. Furthermore, the protruding electrode terminals from the retaining member facilitate connection to the busbar assembly or sampling assembly.

[0131] According to some embodiments of this application, such as Figure 7 As shown, the housing 20 also includes a first side wall 212 connected to the edge of the first bottom wall 211. The first dimension D1 of the distance between the top of the first side wall 212 and the first bottom wall 211 and the second dimension D2 of the distance between the stop member 400 and the first bottom wall 211 satisfy that D1 < D2.

[0132] In this embodiment, the first bottom wall 211 and the first side wall 212 can together form a cavity for accommodating a single battery cell. The first side wall can be plate-shaped or a side beam structure with an internal cavity. The first dimension D1 between the top of the first side wall 212 and the first bottom wall 211 can be the height of the first side wall 212.

[0133] The second dimension D2 of the stop 400 from the first bottom wall 211 can be the distance between the lower surface of the stop 400 near the first bottom wall 211 and the first bottom wall 211.

[0134] It is understood that D1 is smaller than D2, and the first sidewall 212 can expose the stop 400 from the side, so that when disassembling the battery cell 11, it is not necessary to remove the mounting part 300 from the housing. The stop 400 can be directly pulled out from the slot along the second direction Y. During the extraction process, the first sidewall 212 will not obstruct the movement of the stop 400, further improving the replacement efficiency of the battery cell.

[0135] In this embodiment, by setting the first sidewall 212 lower than the stop member, the stop member can slide relative to the mounting part, and the battery cell can be disassembled and installed without disassembling the mounting part, which improves the replacement efficiency of the battery cell. At the same time, since the mounting part does not need to be disassembled when repairing the battery cell, the mounting part can be fixed by the adhesive layer, reducing the space required for installation and improving the energy density of the battery device.

[0136] Figure 14 Please refer to the structural schematic diagram of the mounting part provided in the embodiments of this application. Figure 14According to some embodiments of this application, the mounting part 300 includes a plurality of first partitions 350 arranged at intervals along a first direction X. The plurality of first partitions 350 are all connected to the side of the second bottom wall 310 away from the first bottom wall 211, and two adjacent first partitions 350 and the portion of the second bottom wall 310 located between two adjacent first partitions 350 together form a receiving area 330.

[0137] In this embodiment, the mounting part 300 can be a component, which may include a second bottom wall 310 and a plurality of first partitions 350 disposed on the second bottom wall 310. The first partitions 350 can be plate-shaped structures and can be disposed perpendicular to the second bottom wall 310.

[0138] Multiple first separators 350 can be arranged at intervals along the first direction X. Two adjacent first separators 350 and the portion of the second bottom wall 310 located between them can form a receiving area 330. It is understood that, in addition to having a first opening 311 at the top, the receiving area can also have openings on both sides along the second direction Y. These openings can be sealed by the first side wall 212 to limit the multiple battery cells in the receiving area at both ends in the second direction.

[0139] It is understood that a first opening 311 can be formed between the tops of two adjacent first partitions 350, and the stop 400 can be installed on the top of the first partition 350 away from the second bottom wall 310 to partially block the first opening 311, such as... Figure 14 Each first partition 350 on both sides of the electrode terminal 111 in each accommodating area can be provided with a stop 400, so that the battery cell can be pressed against both sides along the first direction X, thereby improving the reliability of the battery cell connection.

[0140] In this embodiment, by setting multiple first partitions, the mounting part can be divided into multiple accommodating areas. While realizing the detachability of the battery cells, the volume of the mounting part can be reduced, further improving the space utilization of the battery device.

[0141] According to some embodiments of this application, the battery device 100 further includes a heat exchange section 500; the heat exchange section 500 includes a first heat exchange element 510, the first heat exchange element 510 forms a first bottom wall 211, and the first heat exchange element 510 is connected to the second bottom wall 310 through an adhesive layer 320.

[0142] In this embodiment, the battery cell 11 can be cooled from the bottom. That is, a first heat exchanger 510 is provided at the bottom of the mounting part. The first heat exchanger 510 can have a heat exchange space inside to allow the heat exchanger to flow. Thus, the heat exchange of the battery cell can be achieved through the first heat exchanger 510, such as cooling.

[0143] In addition, the first heat exchanger 510 can serve as the first bottom wall 211 of the housing 20. That is, the first heat exchanger 510 serves as the bottom support structure of the housing. The mounting part 300 can be directly bonded to the first heat exchanger 510 through the adhesive layer 320, so that the second bottom wall of the mounting part 300 can be used to indirectly realize the heat exchange between the battery cell and the first heat exchanger.

[0144] In addition, a bottom guard plate 800 can be provided at the bottom of the first heat exchanger 510 away from the mounting part to protect the first heat exchanger 510 and improve the situation where the heat exchanger is easily leaked due to collision with sand and gravel.

[0145] This embodiment, by setting a first heat exchanger, can make reasonable use of the housing space to set up the heat exchange section, and realize heat exchange and cooling of the battery cell from the bottom of the battery cell.

[0146] Figure 15 This is a schematic diagram of the structure of the mounting part provided in another embodiment of this application. Figure 16 For a schematic diagram of the mounting section provided in another embodiment of this application, please refer to... Figure 15 as well as Figure 16 According to some embodiments of this application, the mounting part 300 includes a plurality of mounting members 360 arranged along a first direction X, each mounting member 360 having at least one receiving area 330, and the mounting member 360 having a third bottom wall 361 facing the first bottom wall 211, the third bottom walls 361 of each mounting member 360 together forming a second bottom wall 310.

[0147] In this embodiment, the mounting part 300 may include a plurality of independent mounting members 360, each mounting member 360 may have one or more receiving areas 330, such as Figure 15 In this context, each mounting component 360 may include a receiving area 330, such as... Figure 16 In this embodiment, a mounting component 360 may include two receiving areas 330 arranged along a first direction X. Of course, in other embodiments, each mounting component 360 may also include more receiving areas 330.

[0148] It is understood that each mounting component 360 may have a third bottom wall 361 facing the first bottom wall 211, and the third bottom walls of each mounting component may together form the second bottom wall 310. The third bottom wall 361 of each mounting component 360 may be connected to the first bottom wall 211 of the housing through an adhesive layer 320.

[0149] In this embodiment, by setting multiple mounting components, the battery cells can be detachably installed, and since each mounting component is independent of the others, space can be provided for heat exchange of the battery cells.

[0150] According to some embodiments of this application, the mounting component 360 further includes a plurality of second partitions 362 arranged at intervals along a first direction X. The second partitions 362 are connected to the third bottom wall 361, and two adjacent second partitions 362 and at least a portion of the third bottom wall 361 located between two adjacent second partitions 362 together form a receiving area 330.

[0151] Mounting component 360 may include a third bottom wall 361 and a plurality of second partitions 362 connected to the third bottom wall. The second partitions 362 may be plate-like structures and may be arranged perpendicular to the second bottom wall 310.

[0152] Multiple second partitions 362 can be arranged at intervals along the first direction X. Two adjacent second partitions 362 and the portion of the third bottom wall 361 located between them can form a receiving area 330. It is understood that, in addition to having a first opening 311 at the top, the receiving area can also have openings on both sides along the second direction Y. These openings can be sealed by the first side wall 212 to limit the multiple battery cells in the receiving area at both ends in the second direction.

[0153] It is understood that a first opening 311 can be formed between the tops of two adjacent second partitions 362, and the stop 400 can be installed on the top of the second partition 362 away from the third bottom wall 361 to partially block the first opening 311, such as... Figure 15 Each second partition 362 on both sides of the electrode terminal 111 in each accommodating area can be provided with a stop 400, so that the battery cell can be pressed against both sides along the first direction X, thereby improving the reliability of the battery cell connection.

[0154] In this embodiment, by setting multiple second partitions, the mounting component can be divided into one or more accommodating areas. While realizing the detachability of the battery cell, the volume of the mounting component can be reduced, further improving the space utilization of the battery device.

[0155] According to some embodiments of this application, such as Figure 15 As shown, the battery device 100 further includes a heat exchange section 500, which includes a second heat exchange element 520 disposed between two adjacent mounting members 360; and / or, as Figure 16 As shown, the battery device 100 also includes a heat exchange section 500, which includes a third heat exchange element 530. The third heat exchange element 530 forms a first bottom wall 211 and is connected to a second bottom wall 310 through an adhesive layer 320.

[0156] In this embodiment, since there are multiple mounting components, the space between two adjacent mounting components can be used for heat exchange and cooling. For example... Figure 15As shown, there may be gaps between the multiple mounting members 360, at which a second heat exchanger 520 can be fitted. The second heat exchanger 520 can be a heat exchange section with an internal heat exchange space to allow the flow of heat exchanger, thereby enabling heat exchange, such as cooling, of the battery cell. In some embodiments, the second heat exchanger 520 can be bonded to adjacent mounting members on both sides using a structure such as double-sided adhesive.

[0157] In other embodiments, cooling can also be achieved using the bottom space of the mounting component. That is, a third heat exchanger 530 is provided at the bottom of the mounting component. The interior of the third heat exchanger 530 can have a heat exchange space to circulate the heat exchanger, thereby enabling heat exchange, such as cooling, of the battery cell through the third heat exchanger 530.

[0158] In addition, the third heat exchanger 530 can serve as the first bottom wall 211 of the housing 20. That is, the third heat exchanger 530 serves as the bottom plate of the housing. The mounting component can be directly bonded to the third heat exchanger 530 through the adhesive layer 320, so that the heat exchange between the battery cell and the third heat exchanger can be indirectly achieved by directly utilizing the third bottom wall of the mounting component 360.

[0159] In yet another embodiment, such as Figure 16 In this configuration, a second heat exchanger 520 can be installed between two adjacent mounting components, or a third heat exchanger 530 can be used as the first bottom wall 211 of the housing 20. This means that heat exchange can be performed simultaneously from the side and bottom of the battery cell 11, thereby improving the heat exchange effect of the battery cell.

[0160] In this embodiment, by setting multiple mounting components, the gaps between the mounting components can be flexibly utilized, and heat exchange sections can be set between the mounting components and / or at the bottom of the mounting components to achieve heat exchange of the battery cells.

[0161] Figure 17 for Figure 14 A schematic diagram of the structure of the intermediate spacer. According to some embodiments of this application, such as... Figure 14 and Figure 17 As shown, the first direction X is parallel to the maximum expansion direction of the battery cell 11, and a spacer 600 is provided between the side surface of the battery cell 11 at one end along the first direction X and the inner surface of the receiving area 330. The spacer 600 is provided with an opening 610 for allowing the battery cell 11 to expand along the first direction X.

[0162] It can be understood that the maximum expansion direction of the battery cell 11 can be the width direction of the battery cell 11. For example... Figure 14 The width direction of a single battery cell can be set parallel to the first direction X.

[0163] A spacer 600 may be provided between the battery cell 11 and at least one inner surface at both ends of the receiving area 330 along the first direction. The spacer 600 may allow the battery cell 11 to expand and deform along the first direction. For example, the spacer 600 may have an opening 610 to provide space for the expansion of the battery cell 11 along the first direction.

[0164] like Figure 17 In this embodiment, the spacer 600 may have one opening 610 inside; in other embodiments, the spacer 600 may also have multiple openings inside.

[0165] exist Figure 15 and Figure 16 In the illustrated embodiment, spacers 600 may also be provided between the two sides of each battery cell 11 and the inner side of the receiving area. Of course, in Figure 15 and Figure 16 In the illustrated embodiment, the deformation capability of the second heat exchanger 520 can also be used to provide space for the expansion of the battery cell 11.

[0166] In this embodiment, by providing spacers, space can be provided for the expansion of individual battery cells, thereby improving the reliability of the battery device.

[0167] According to some embodiments of this application, such as Figures 14 to 16 As shown, the battery device also includes a heat exchange section 500; the mounting section 300 has a heat exchange wall 370 that is thermally connected to the heat exchange section 500, and a heat-conducting element 700 is provided between the battery cell 11 and the heat exchange wall 370.

[0168] In this embodiment, the heat exchange wall 370 can be the second bottom wall or its side wall of the mounting portion, and can be specifically set according to the position of the heat exchange portion 500. The heat exchange wall 370 can refer to the portion of the mounting portion 300 located between the battery cell and the heat exchange portion.

[0169] The heat exchange section 500 can be a structure with an internal heat exchange space, in which a heat exchanger can circulate to achieve heat exchange between the heat exchange section 500 and the battery cell.

[0170] The heat-conducting component can be a structure that enables rapid heat conduction in related technologies. For example, it can be made of materials such as thermally conductive silicone or thermally conductive grease. The heat-conducting component 700 can be placed on the surface of the battery cell facing the heat exchange wall, which can accelerate the heat exchange speed and improve the heat exchange effect of the battery cell.

[0171] Alternatively, the mounting section can be made of metal, which can improve the installation reliability of the battery cells, as well as enhance thermal conductivity and enable rapid heat exchange.

[0172] like Figure 14In this configuration, the heat exchange section 500 may include a first heat exchanger 510 disposed at the bottom of the mounting section 300. In this case, the second bottom wall 310 of the mounting section 300 between the battery cell 11 and the first heat exchanger 510 may form a heat exchange wall 370. A heat-conducting element 700 may be disposed between the battery cell 11 and the second bottom wall 310.

[0173] like Figure 15 In this configuration, the heat exchange section 500 may include a second heat exchange element 520 disposed between two adjacent mounting members 360. In this case, the second partition 362 between the battery cell 11 and the second heat exchange element 520 may form a heat exchange wall 370. A heat-conducting element 700 may be disposed between the battery cell 11 and the second partition 362.

[0174] like Figure 16 In this mounting section 300, the heat exchange unit 500 may include a second heat exchanger 520 disposed between two adjacent mounting members 360 and a third heat exchanger 530 disposed at the bottom of the mounting section 300. The second partition 362 between the battery cell 11 and the second heat exchanger 520, and the third bottom wall 361 of the mounting member 360 between the battery cell and the third heat exchanger 530, may form a heat exchange wall 370. A heat-conducting member 700 may be disposed between the battery cell 11 and the second partition 362, and between the battery cell and the third bottom wall 361.

[0175] Heat-conducting components can accelerate the heat transfer rate between battery cells and mounting parts, thereby improving the heat conduction effect between battery cells and heat exchange parts and achieving rapid heat exchange.

[0176] This application provides an electrical device, which includes the battery device 100 in the above embodiments, and the battery device 100 is used to provide electrical energy.

[0177] Electrical devices include vehicles (such as cars, electric vehicles, ships, spacecraft, etc.), display devices (such as mobile phones, tablets, laptops, etc.), electric toys, power tools, etc.

[0178] It is understood that the electrical device provided in this application, by using any of the aforementioned battery devices 100, has all the beneficial effects of the aforementioned battery devices 100, which will not be elaborated here.

[0179] This application provides an energy storage device, which includes the battery device 100 in the above embodiments, and the battery device 100 is used to store electrical energy.

[0180] Energy storage devices can include, but are not limited to, centralized energy storage devices (such as containerized energy storage devices), distributed energy storage devices, mobile energy storage devices, wearable energy storage devices, and so on.

[0181] It is understood that the energy storage device provided in this application, by using any of the aforementioned battery devices 100, has all the beneficial effects of the aforementioned battery devices 100, which will not be elaborated here.

[0182] Please refer to Figures 1 to 13 In some embodiments, the battery device 100 may include: a housing 20, a mounting portion 300, and a plurality of battery cells 11; the housing 20 has a first bottom wall 211; the mounting portion 300 is housed in the housing 20, and the mounting portion 300 has a second bottom wall 310 facing the first bottom wall 211, the second bottom wall 310 being bonded to the first bottom wall 211 by an adhesive layer 320, and the mounting portion 300 having a plurality of receiving areas 330 arranged along a first direction X, each receiving area 330 being detachably housing a plurality of battery cells 11 arranged along a second direction Y, wherein the first direction X and the second direction Y are perpendicular to each other.

[0183] In some embodiments, the receiving area 330 has a first opening 311 at one end away from the second bottom wall 310 for exposing the electrode terminals 111 of the battery cell 11, and a stop member 400 is provided at the first opening 311. The mounting portion 300 is provided with a slot 340 extending in the second direction Y. The stop member 400 includes a stop portion 410 and a connecting portion 420 connected to the stop portion 410. The connecting portion 420 can slide in the slot 340 in the second direction Y. The stop portion 410 is used to press against the battery cell 11.

[0184] In this embodiment, when a single battery cell malfunctions, it can be removed from the housing area and then taken out of the casing. This allows for individual removal and replacement of each battery cell. Compared to related technologies where battery cells are glued to the casing, this allows for individual disassembly and repair of each battery cell without replacing the entire battery pack, reducing maintenance costs. Furthermore, by providing a stop at the opening of the housing area, which can be detachably connected to the mounting portion, detachable connection of the battery cells can be achieved. This design is simple and easy to implement.

[0185] In addition, by bonding the second bottom wall to the first bottom wall, additional installation structures can be reduced, the energy density of the battery device can be improved, and the battery cells can be disassembled without significantly affecting the volume utilization and structural rigidity of the CTP, thereby reducing maintenance costs and balancing the energy density and maintenance costs of the battery device.

[0186] It is understandable that traditional CTP structures require beams to be set inside the box to divide the space inside the box, and battery cells to be bonded in each space. However, in this embodiment, by setting up a mounting part, the second bottom wall of the mounting part can be a thin plate structure, which can not have too much impact on the volume utilization of the original CTP, and can also realize the disassembly of battery cells, reducing maintenance costs.

[0187] 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: Multiple battery cells; The housing has a first bottom wall; The mounting portion is housed within the housing and has a second bottom wall facing the first bottom wall, the second bottom wall being connected to the first bottom wall. The mounting portion also has a plurality of receiving areas arranged along a first direction, each receiving area detachably accommodating a plurality of battery cells arranged along a second direction, wherein the first direction and the second direction intersect.

2. The battery device according to claim 1, characterized in that, The receiving area has a first opening at one end away from the second bottom wall for exposing the electrode terminals of the battery cell, and a stop member is provided at the first opening. The stop member is detachably connected to the mounting part and is used to press the battery cell in the receiving area against the second bottom wall. The second bottom wall is bonded to the first bottom wall by an adhesive layer.

3. The battery device according to claim 2, characterized in that, The mounting portion is provided with a slot extending along the second direction. The abutment includes an abutment portion and a connecting portion connected to the abutment portion. The connecting portion can slide in the slot along the second direction. The abutment portion is used to press against the battery cell.

4. The battery device according to claim 3, characterized in that, The first opening is provided with a stop member at each end along the first direction, the stop member extends in the second direction in a strip shape, and the stop part is covered with a buffer layer for pressing against the surface of the battery cell; The thickness of the blocking part is defined as the dimension perpendicular to the direction of the blocking part, and the thickness H1 of the blocking part satisfies 1mm≤H1≤4mm.

5. The battery device according to claim 2, characterized in that, The battery cell has two electrode terminals, which are spaced apart along the first direction or the second direction, and the electrode terminals protrude from the abutment in a direction away from the second bottom wall.

6. The battery device according to claim 2, characterized in that, The housing also includes a first sidewall connected to the edge of the first bottom wall. The distance between the top of the first sidewall and the first bottom wall is a first dimension D1 and the distance between the abutment and the first bottom wall is a second dimension D2, where D1 < D2.

7. The battery device according to any one of claims 1-6, characterized in that, The mounting portion includes a plurality of first partitions arranged at intervals along the first direction. Each of the plurality of first partitions is connected to the side of the second bottom wall away from the first bottom wall, and two adjacent first partitions and the portion of the second bottom wall located between two adjacent first partitions together form a receiving area.

8. The battery device according to claim 7, characterized in that, The battery device further includes a heat exchange section; the heat exchange section includes a first heat exchange element, the first heat exchange element constitutes the first bottom wall, and the first heat exchange element is connected to the second bottom wall through an adhesive layer.

9. The battery device according to any one of claims 1-6, characterized in that, The mounting portion includes a plurality of mounting members arranged along the first direction, each mounting member having at least one receiving area and a third bottom wall facing the first bottom wall, the third bottom walls of each mounting member collectively constituting the second bottom wall.

10. The battery device according to claim 9, characterized in that, The mounting component further includes a plurality of second partitions spaced apart along the first direction, the second partitions being connected to the third bottom wall, and two adjacent second partitions and at least a portion of the third bottom wall located between two adjacent second partitions together forming a receiving area.

11. The battery device according to claim 10, characterized in that, The battery device further includes a heat exchange section, which includes a second heat exchange element disposed between two adjacent mounting members; And / or, The battery device further includes a heat exchange section, which includes a third heat exchange element that forms the first bottom wall and is connected to the second bottom wall via an adhesive layer.

12. The battery device according to any one of claims 1-6, characterized in that, The first direction is parallel to the maximum expansion direction of the battery cell, and a spacer is provided between the side surface of the battery cell at one end along the first direction and the inner surface of the receiving area. The spacer is provided with an opening to allow the battery cell to expand along the first direction.

13. The battery device according to any one of claims 1-6, characterized in that, The battery device further includes a heat exchange section; the mounting section has a heat exchange wall that is thermally connected to the heat exchange section, and a heat-conducting element is provided between the battery cell and the heat exchange wall.

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

15. An energy storage device, characterized in that, The energy storage device includes a battery device as described in any one of claims 1-13, the battery device being used to store electrical energy.

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