Battery device and electric device

Abstract

The application provides a battery device and a power utilization device, the battery device comprising a beam structure, a heat exchange assembly and a battery cell assembly, at least part of the battery cell assembly and at least part of the heat exchange assembly are located on the same side of the beam structure along a first direction, the heat exchange assembly is located on one side of the heat exchange assembly along a second direction and a heat transfer path is formed between the heat exchange assembly and the heat transfer path, the first direction intersects the second direction; one of the heat exchange assembly and the beam structure is provided with a stopper, the other is provided with a stop groove, the stop groove is provided with an inlet and an outlet, the inlet and the outlet are located on one side of the stop groove along the second direction, the stopper can enter and exit the stop groove through the inlet and the outlet, in the state that at least part of the stopper is located in the stop groove, the inner wall of the stop groove and the stopper are stop matched along the first direction. The battery device in the application is beneficial to simplify the assembly steps between the beam structure and the heat exchange assembly; the heat exchange assembly and the battery cell assembly are mutually constrained, and the probability that the stopper and the stop groove are separated from each other is reduced.

Description

Technical Field

[0001] This application relates to battery technology, and more particularly to a battery device and an electrical device. Background Technology

[0002] In related technologies, the beam structure and heat exchange components in the battery device are fixed to the battery device by welding, and then bonded to the battery cell assembly by adhesive bonding.

[0003] After welding and fixing, the beam structure and heat exchange components remain in stable positions, while the individual battery cells need to be bonded to the heat exchange components. This makes the adhesive prone to rubbing against each other during the repositioning of the individual battery cells, which is detrimental to bonding stability. Summary of the Invention

[0004] This application provides a battery device and an electrical device, which helps to simplify the assembly process of the battery device.

[0005] The technical solution of this application embodiment is implemented as follows: This application provides a battery device, including: Beam structure; Heat exchange components are used to transport heat exchange media; A battery cell assembly, wherein at least a portion of the battery cell assembly and at least a portion of the heat exchange assembly are located on the same side of the beam structure along a first direction, and the battery cell assembly is located on one side of the heat exchange assembly along a second direction, with a heat transfer path formed between them, wherein the first direction intersects the second direction. One of the heat exchange components and the beam structure is provided with a stop member, and the other is provided with a stop groove. The stop groove has an inlet and an outlet located on one side of the stop groove along a second direction. The stop member can enter and exit the stop groove along the inlet and an outlet. When at least a portion of the stop member is located within the stop groove, the inner wall of the stop groove and the stop member stop and cooperate with the stop member along the first direction.

[0006] The battery device in this embodiment, through the cooperation of the stop and the stop groove, simplifies the assembly steps for connecting and fixing the beam structure and the heat exchange assembly, thereby improving assembly efficiency. The insertion direction of the stop and the stop groove is the same as the relative direction between the heat exchange assembly and the battery cell assembly, thus enabling the heat exchange assembly and the battery cell assembly to constrain each other along the second direction. This reduces the probability of the stop and the stop groove separating from each other, which helps to improve the stability of the relative positions of the beam structure, the heat exchange assembly, and the battery cell assembly, and improves the stability of use. During the assembly process of the battery device, the battery cell assembly can be bonded to the heat exchange assembly first, and then the position of the heat exchange assembly and the beam structure can be adjusted along the second direction. This reduces the probability of the battery cell assembly needing to be readjusted after bonding, and also reduces the probability of the adhesive on the battery cell assembly scratching.

[0007] In some embodiments, with at least a portion of the stop member located within the stop groove, the inner wall of the stop groove engages with the stop member along the third direction, wherein the first direction, the second direction, and the third direction intersect each other. In this way, the relative positions of the heat exchange components and the beam structure along the third direction can be kept stable through the cooperation of the stop and the stop groove.

[0008] In some embodiments, the battery device includes a limited state and an active state, and the stop member is capable of moving in and out of the stop groove along the inlet and outlet in the second direction to switch the battery device between the limited state and the active state; In the limited position, at least a portion of the stop member is located within the stop groove, such that the inner wall of the stop groove engages with the stop member along the first direction. In the active state, the stop member is located outside the stop groove, so that the beam structure and the heat exchange assembly can move relative to each other in at least one of the first direction and the third direction.

[0009] This allows for a wider range of relative movements between the beam structure and the heat exchange components during operation, facilitating assembly and disassembly.

[0010] In some embodiments, the battery device includes a housing assembly comprising a first housing and a second housing, the first housing and the second housing being arranged opposite each other along the third direction and enclosing an installation space, wherein the beam structure, the heat exchange assembly and the battery cell assembly are all located within the installation space. By using the stop groove and the stop member to stop along the third direction, the probability of the heat exchange component colliding with the first and second housings along the third direction is reduced.

[0011] In some embodiments, the beam structure is provided with the stop member, and the heat exchange assembly is provided with the stop groove. This avoids directly creating grooves in the beam structure, reducing the adverse impact on the structural strength of the beam structure.

[0012] In some embodiments, the heat exchange assembly includes a first heat exchange body and a second heat exchange body. The second heat exchange body is connected to one end of the first heat exchange body along a third direction. The first direction, the second direction, and the third direction intersect each other. At least a portion of the first heat exchange body is located on one side of the battery cell assembly along the second direction, and at least a portion of the second heat exchange body is located on one side of the battery cell assembly along the third direction. The stop groove is disposed at at least one end of the first heat exchange body along the first direction. Thus, the first and second heat exchange bodies can constrain the position of the battery cell assembly from the second direction and the third direction, respectively, improving the positional stability of the battery cell assembly within the battery device and facilitating its normal operation.

[0013] In some embodiments, the heat exchange assembly includes heat exchange channels for conveying the heat exchange medium. The heat exchange channels include a first channel and a second channel, with the first channel located inside the first heat exchange body and the second channel located inside the second heat exchange body. Thus, the heat exchange assembly forms heat transfer paths with the battery cell assembly along both the second and third directions, thereby improving the temperature control effect on the battery cell assembly.

[0014] In some embodiments, the heat exchange assembly further includes a collector, which is located on the same side of the first heat exchange body and the second heat exchange body along the first direction and connected to both. The heat exchange channel further includes a collection cavity, with both the first channel and the second channel communicating with the collection cavity. The stop groove is disposed on the collector. Thus, the stop groove is disposed on the collector, which has high structural strength, which helps to reduce the risk of structural damage to the stop groove when the stop member and the stop groove are in a stop-stop engagement state.

[0015] In some embodiments, the second heat exchanger body is provided with a clearance channel extending along the third direction, and the stop member can pass through the clearance channel along the third direction. Thus, during the assembly of the heat exchanger assembly and the beam structure, the stop member can directly pass through the clearance channel along the third direction and then embed itself into the stop groove along the second direction. This helps reduce the relative movement distance between the heat exchanger assembly and the beam structure during their arrangement, thereby improving assembly efficiency. Simultaneously, it also helps reduce the overall size of the heat exchanger assembly and the beam structure along the third direction after they are connected and fixed, resulting in a more compact structure.

[0016] In some embodiments, the beam structure is provided with a positioning groove, which is open on one side along a third direction and extends through the beam structure along the first direction. The first direction, the second direction, and the third direction intersect each other. The heat exchange component is provided with a collector at at least one end along the first direction, and the collector can enter and exit the positioning groove along the third direction. The stop member is arranged along the third direction with the positioning groove. When the collector is located in the positioning groove, the collector is constrained with the inner wall of the positioning groove along the second direction, thereby limiting the orientation of the heat exchange component relative to the beam structure along the second direction. This achieves coarse positioning between the heat exchange component and the beam structure during assembly, reduces the time required for adjusting the position between the stop member and the stop groove, and improves assembly efficiency.

[0017] In some embodiments, the battery device further includes a limiting member, which has a first limiting groove and a second limiting groove. The first limiting groove and the second limiting groove are open on the same side along the third direction. The first limiting groove is open on one side along the first direction. A portion of the current collector can be embedded in the first limiting groove along the third direction and abut against the inner wall of the first limiting groove along the second direction. A portion of the beam structure can be embedded in the second limiting groove along the third direction and abut against the inner wall of the second limiting groove along the first direction. When the relative position between the stop member and the stop groove is within a preset position range, a portion of the beam structure and a portion of the current collector are respectively embedded in the first limiting groove and the second limiting groove along the third direction. This achieves constraint on the beam structure and the heat exchange component in the first and second directions through the limiting member, improving the stability of the relative position between the beam structure and the heat exchange component.

[0018] In some embodiments, there are multiple heat exchange components, each arranged along the second direction. A portion of the current collector is located via the positioning groove on the side of the beam structure opposite to the battery cell assembly along the first direction. The battery device also includes a current collector pipe located on the side of the beam structure opposite to the battery cell assembly along the first direction. The current collector pipe connects to the current collectors of at least two adjacent heat exchange components along the second direction. This helps to reduce the overall size of the battery device in the third direction; separating the current collector pipe and the battery cell assembly by the beam structure reduces the probability of interference during their installation. In some embodiments, the beam structure includes a beam body and a stop protrusion. At least a portion of the battery cell assembly is located on a first side of the beam body along the first direction. The stop protrusion is located at one end of the beam body along a third direction and protrudes towards the first side of the first direction. The first direction, the second direction, and the third direction intersect each other. The heat exchange component abuts against the stop protrusion along the third direction. In this way, the stop protrusion can be used to support the heat exchange component, thereby restricting the position of the heat exchange component and the beam structure in the third direction during the process of adjusting the position of the heat exchange component relative to the beam structure in the second direction so that the stop and the stop groove can fit together, thus improving the convenience of assembly.

[0019] In some embodiments, the stop member includes a main body and a stop portion. The main body extends along the first direction, and the stop portion is disposed at one end of the main body along the first direction away from the beam structure and the heat exchange assembly where the stop member is located. The stop portion protrudes from the main body along a third direction. The first direction, the second direction, and the third direction intersect each other. The stop groove is open on one side along the first direction. With at least a portion of the stop member located within the stop groove, at least a portion of the main body can pass through the stop groove along the first direction. The inner wall of the stop groove and the stop portion engage in a stop-fitting action along the first direction. Thus, the stop portion enables a stop-fitting action between the stop member and the inner wall of the stop groove along the first direction. The portion of the beam structure and the heat exchange assembly where the stop groove is located can be situated between the other structure with the stop member and the stop portion, improving the stability of the stop-fitting action between the stop member and the structure forming the stop groove.

[0020] In some embodiments, there are multiple stops arranged along a third direction, where the first direction, the second direction, and the third direction intersect each other. This ensures that the stops arranged along the third direction do not interfere with each other during movement relative to the stop grooves, thus improving assembly efficiency.

[0021] In some embodiments, the battery cell assembly includes a plurality of battery cells arranged along the first direction, and the beam structure abuts against the battery cell assembly along the first direction. Thus, the constraint of the heat exchange assembly along the first direction and the beam structure enhances the suppression of expansion of the battery cell assembly along the first direction.

[0022] In some embodiments, the heat exchange assembly includes heat exchange channels for conveying the heat exchange medium. The heat exchange channels include a first channel and a second channel. The first channel is located on one side of the battery cell assembly along the second direction, and the second channel is located on one side of the battery cell assembly along a third direction. The first direction, the second direction, and the third direction intersect each other. Thus, the heat exchange assembly forms heat transfer paths with the battery cell assembly along both the second and third directions, thereby improving the temperature control effect of the battery cell assembly.

[0023] This application also provides an electrical device, including any of the battery devices described in the foregoing embodiments, wherein the battery device is used as a power source for the electrical device.

[0024] Thus, by using the battery device in the aforementioned embodiments, it is beneficial to improve the overall assembly efficiency and operational stability of the electrical device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the electrical device provided in the embodiments of this application; Figure 2 This is an exploded schematic diagram of the battery device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the battery device after the second housing has been removed, according to an embodiment of this application. Figure 4 yes Figure 3 An explosion diagram; Figure 5 This is a schematic diagram of the beam structure and heat exchange components in one embodiment of this application, with the battery device in a limited position. Figure 6 yes Figure 5 A magnified view of a portion of position A in the diagram; Figure 7 yes Figure 5 A magnified view of a portion of position B in the diagram; Figure 8 yes Figure 5 A cross-sectional view of the CC position in the middle; Figure 9 This is a partially enlarged schematic diagram of another embodiment in this application; Figure 10 This is a schematic diagram of the limiting member in one embodiment of this application; Figure 11 A schematic diagram of a beam structure in one embodiment of this application.

[0026] Explanation of reference numerals in the attached figures 1000, Vehicle; 100, Battery Unit; 100a, Installation Space; 200, Controller; 300, Motor; 10, Beam Structure; 10a, Positioning Groove; 11, Beam Body; 12, Stop Protrusion; 20, Heat Exchange Assembly; 20aa, Heat Exchange Channel; 20aa, First Channel; 20ab, Second Channel; 20ac, Collector Chamber; 21, First Heat Exchange Body; 22, Second Heat Exchange Body; 22a, Clearance Channel; 23, Current Collector; 30, Battery Cell Assembly; 31, Battery Cell; 40, Stop; 40aa, Stop Groove; 40aa, Inlet / Outlet; 41, Main Body; 42, Stop; 50, Housing Assembly; 51, First Housing; 52, Second Housing; 60, Collector Pipe; 70, Limiting Component; 70a, First Limiting Groove; 70b, Second Limiting Groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] 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 limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0029] In the description of the embodiments of this application, the technical terms "first," "second," "third," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0032] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "top", "bottom", "inner", "outer", "circumferential", etc., 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 do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0033] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the 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.

[0034] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0035] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. Specifically, if the angle between two directions is 85°-90°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.

[0036] In the description of the embodiments of this application, for ease of explanation, as shown in the accompanying drawings, the direction of arrow X is referred to as the "first direction", the direction of arrow Y as the "second direction", and the direction of arrow Z as the "third direction".

[0037] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0038] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0039] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. There are no particular limitations in the embodiments of this application.

[0040] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, with the separator positioned between the positive and negative electrodes. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0041] The electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0042] In some implementations, the electrode assembly is a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0043] In some implementations, the electrode assembly is a stacked structure.

[0044] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0045] As an example, multiple positive electrode plates can be provided, and negative electrode plates can be folded to form multiple stacked folded segments, with a positive electrode plate sandwiched between adjacent folded segments.

[0046] As an example, both the positive and negative electrode plates are folded to form multiple stacked folded segments.

[0047] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0048] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0049] In some embodiments, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0050] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0051] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab. The electrode terminal can be directly connected to the tab, or it can be indirectly connected to the tab through a current collector. The electrode terminal can be provided on the end cap or on the housing.

[0052] In some embodiments, the battery cell may include a casing. The casing may be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc. In some embodiments, the casing may be a sealed structure or a non-sealed structure. As an example, when the casing is a non-sealed structure, the casing serves to protect the electrode assembly, and a sealing bag is included between the casing and the electrode assembly to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag may be a bag-shaped insulating component or an aluminum-plastic film. When the casing is a sealed structure, it is used to encapsulate components such as the electrode assembly and electrolyte.

[0053] In some embodiments, a pressure relief mechanism is provided on the casing of the battery cell. The pressure relief mechanism is used to release the internal gas of the battery cell.

[0054] As an example, the internal pressure or temperature of a battery cell is actuated to release the internal pressure or temperature when it reaches a predetermined threshold. When the internal pressure or temperature of a battery cell reaches the predetermined threshold, the pressure relief mechanism is activated or a weak structure in the pressure relief mechanism is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released. The threshold design varies depending on the design requirements. The threshold may depend on the materials of one or more of the positive electrode, negative electrode, electrolyte, and separator in the battery cell.

[0055] As an example, the pressure relief mechanism can be integrally formed with the housing.

[0056] As an example, the pressure relief mechanism can also be separately installed and connected to the outer casing.

[0057] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0058] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0059] As an example, the battery cell assembly can be part of a battery module, which is formed by arranging and fixing multiple battery cells together to create an independent module. As another example, the battery module can be formed by bundling multiple battery cells together with cable ties.

[0060] In some embodiments, the battery device may be a battery pack, which includes a housing assembly and one or more individual battery cells housed within the housing assembly.

[0061] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing assembly by fixing the battery module in the housing assembly.

[0062] As an example, the battery cell assembly can also be housed in the housing assembly by directly fixing multiple battery cells to the housing assembly.

[0063] As an example, see Figure 2 The housing assembly 50 may include a first housing 51 and a second housing 52. The first housing 51 and the second housing 52 are fastened together to form a closed space inside the housing assembly 50 to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 51 may be a top cover or a bottom plate.

[0064] As an example, the housing assembly 50 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 assembly 50 forms a closed space to accommodate the individual battery cells.

[0065] In some embodiments, the housing assembly 50 may be part of the vehicle's chassis structure. For example, a portion of the housing assembly 50 may be at least a portion of the vehicle's floor, or a portion of the housing assembly 50 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0066] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0067] In the following embodiments, for ease of explanation, a vehicle 1000 is used as an example of an electrical device according to an embodiment of this application. The description is as follows with reference to the accompanying drawings.

[0068] 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 vehicles, etc. For example... Figure 1As shown, a battery device 100 is installed inside the vehicle 1000. 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.

[0069] 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.

[0070] The embodiments of this application will now be described in detail.

[0071] The battery unit comprises individual battery cells, a beam structure, and a heat exchange assembly. The beam structure enhances the overall structural strength of the battery unit. The heat exchange assembly forms a heat transfer path with the individual battery cells to continuously absorb the heat generated during charging and discharging, maintaining the normal operation of the individual battery cells. The beam structure connects to the heat exchange assembly to secure it.

[0072] In related technologies, heat exchange components are fixedly connected to other components in the battery device through welding, bonding, or other methods, and the assembly process is relatively complicated.

[0073] This application provides a battery device in which a stop member is provided in one of the heat exchange component and the beam structure, and a stop groove is provided in the other. The stop member can be embedded in the stop groove along a second direction and cooperate with the inside of the stop groove along a first direction, thereby fixing the heat exchange component and the beam structure along the second direction. The battery cell assembly is located on at least part of the side of the heat exchange component along the second direction, so that the battery cell assembly and the heat exchange component are mutually constrained along the second direction and remain stable.

[0074] Specifically, see Figures 2 to 7 This application provides a battery device 100, which includes a beam structure 10, a heat exchange assembly 20, and a battery cell assembly 30.

[0075] The heat exchange component 20 is used to transport the heat exchange medium.

[0076] At least a portion of the battery cell assembly 30 and at least a portion of the heat exchange assembly 20 are located on the same side of the beam structure 10 along a first direction, and the battery cell assembly 30 is located on the side of at least a portion of the heat exchange assembly 20 along a second direction, forming a heat transfer path between the two, with the first direction intersecting the second direction.

[0077] One of the heat exchange assembly 20 and the beam structure 10 is provided with a stop member 40, and the other is provided with a stop groove 40a. The stop groove 40a is provided with an inlet and outlet 40aa. The inlet and outlet 40aa are located on one side of the stop groove 40a along the second direction. The stop member 40 can enter and exit the stop groove 40a along the inlet and outlet 40aa. When at least a part of the stop member 40 is located within the stop groove 40a, the inner wall of the stop groove 40a and the stop member 40 stop and cooperate with each other along the first direction.

[0078] The beam structure 10 is used to form the frame structure in the battery device 100, improve the overall structural strength of the battery device 100, and protect other components inside the battery device 100.

[0079] The specific number of beam structures 10 is not limited; there can be one or more.

[0080] The heat exchange assembly 20 is provided with a heat exchange channel 20a, in which the heat exchange medium can be transported.

[0081] The specific type of heat exchange medium transported in heat exchange channel 20a is not limited, such as water.

[0082] The battery cell assembly 30 includes multiple battery cells 31. The multiple battery cells 31 in the battery cell assembly 30 are electrically connected in series and parallel and perform charging and discharging operations.

[0083] A heat transfer path is formed between the heat exchange component 20 and the battery cell component 30, enabling heat exchange between them. The heat generated by the battery cell component 30 during operation can be transferred to the heat exchange medium in the heat exchange channel 20a. The heat exchange medium continuously carries away the heat, thereby achieving the purpose of controlling the temperature of the battery cell component 30.

[0084] During the assembly of the battery device 100, the battery cell assembly 30 and the heat exchange assembly 20 can be bonded and fixed by adhesive bonding, so as to stabilize the heat exchange path between the two.

[0085] The stop member 40 can enter and exit the stop groove 40a in the second direction through the inlet and outlet 40aa. Thus, during the assembly of the battery device 100, the heat exchange component 20 can move relative to the beam structure 10 in the second direction, so that at least a part of the stop member 40 can be embedded in the stop groove 40a. Through the stop engagement between the inner wall of the stop groove 40a and the stop member 40 in the first direction, the stop engagement between the beam structure 10 and the heat exchange component 20 in the first direction is realized, so that the relative position between the beam structure 10 and the heat exchange component 20 in the first direction is within a suitable range.

[0086] The beam structure 10 and the heat exchange component 20 are fixed together by the cooperation of the stop 40 and the stop groove 40a, so that the load on the heat exchange component 20 can be transferred to the beam structure 10, which helps to improve the impact and load resistance of the heat exchange component 20 and extend the service life of the heat exchange component 20.

[0087] The battery cell assembly 30 is located on one side of the heat exchange assembly 20 along the second direction and can cooperate with the heat exchange assembly 20 in the second direction to suppress the movement of the stop member 40 relative to the stop groove 40a in the second direction, thereby reducing the probability of the stop member 40 disengaging from the stop groove 40a.

[0088] The battery device 100 in this embodiment, through the cooperation of the stop member 40 and the stop groove 40a, simplifies the assembly steps for connecting and fixing the beam structure 10 and the heat exchange component 20, thereby improving assembly efficiency. The embedding direction of the stop member 40 and the stop groove 40a is the same as the relative direction between the heat exchange component 20 and the battery cell assembly 30, thereby enabling the heat exchange component 20 and the battery cell assembly 30 to constrain each other along the second direction, reducing the probability of the stop member 40 and the stop groove 40a separating from each other, which helps to improve the stability of the relative positions of the beam structure 10, the heat exchange component 20 and the battery cell assembly 30, and improves the stability of use. During the assembly process of the battery device 100, the battery cell assembly 30 can be bonded to the heat exchange component 20 first, and then the position of the heat exchange component 20 and the beam structure 10 can be adjusted along the second direction, reducing the probability of the battery cell assembly 30 needing to be readjusted after bonding, and reducing the probability of the adhesive on the battery cell assembly 30 being scratched.

[0089] It should be noted that the stop engagement between the inner wall of the stop groove 40a and the stop member 40 in the first direction can be either that the inner wall of the stop groove 40a and the stop member 40 abut against each other in the first direction, or that there is a gap between the inner wall of the stop groove 40a and the stop member 40 in the first direction, so that the stop member 40 can move relative to the stop groove 40a in the second direction.

[0090] The stop fit between the inner wall of the stop groove 40a and the stop member 40 along the first direction can be a stop fit between the two along one direction of the first direction, or a stop fit between both directions of the first direction.

[0091] In some embodiments, the first direction and the second direction are perpendicular to each other.

[0092] In some embodiments, the stop groove 40a has an inlet and outlet 40aa and is located on the same side of the battery cell assembly 30 relative to the heat exchange assembly 20 along the second direction. That is, the stop groove 40a is open on only one side along the second direction, so that the battery cell assembly 30 can better suppress the probability of the stop member 40 dislodging from the stop groove 40a along the second direction.

[0093] In some embodiments, see Figure 7 The stop groove 40a is open on both sides along the second direction, which improves the flexibility of installation between the beam structure 10 and the heat exchange assembly 20 along the second direction.

[0094] In some embodiments, see Figure 5 and Figure 6 When at least a portion of the stop member 40 is located within the stop groove 40a, the inner wall of the stop groove 40a engages with the stop member 40 along a third direction, and the first direction, the second direction, and the third direction intersect each other.

[0095] Thus, through the cooperation of the stop member 40 and the stop groove 40a, the relative position between the heat exchange assembly 20 and the beam structure 10 along the third direction can be kept stable.

[0096] In some embodiments, the first direction, the second direction, and the third direction are perpendicular to each other.

[0097] In some embodiments, when at least a portion of the stop member 40 is located within the stop groove 40a, the inner wall of the stop groove 40a engages with the stop member 40 in two directions along a first direction, and the inner wall of the stop groove 40a engages with the stop member 40 in two directions along a third direction.

[0098] This helps to further improve the stability of the relative position between the heat exchange component 20 and the beam structure 10 along the first direction and the third direction.

[0099] In some embodiments, the third direction is the height direction of the battery device 100. Therefore, when the battery device 100 is under vibration, the amplitude of the heat exchange component 20 along the third direction is the largest. The stop groove 40a and the stop member 40 along the third direction help to suppress the vibration of the heat exchange component 20 along the third direction.

[0100] In some embodiments, see Figure 6 The battery device 100 includes a limited state and an active state. The stop member 40 can move in and out of the stop groove 40a along the inlet and outlet 40aa in the second direction to switch the battery device 100 between the limited state and the active state. In the limited position, at least a portion of the stop member 40 is located within the stop groove 40a, so that the inner wall of the stop groove 40a and the stop member 40 stop and engage in the first direction. In the active state, the stop 40 is located outside the stop groove 40a, so that the beam structure 10 and the heat exchange assembly 20 can move relative to each other in at least one of the first direction and the third direction.

[0101] This allows for more directions of relative movement between the beam structure 10 and the heat exchange component 20 during operation, facilitating assembly and disassembly.

[0102] For example, see Figure 6 After the stop member 40 leaves the stop groove 40a in the second direction, it can move relative to the stop groove 40a in the third direction, so that the beam structure 10 and the heat exchange assembly 20 can move relative to each other in the third direction.

[0103] In some embodiments, see Figures 2 to 4 The battery device 100 includes a housing assembly 50, which includes a first housing 51 and a second housing 52. The first housing 51 and the second housing 52 are arranged opposite each other along a third direction and enclose an installation space 100a. The beam structure 10, the heat exchange assembly 20 and the battery cell assembly 30 are all located within the installation space 100a.

[0104] During the actual operation of the battery device 100, the vibration generated along the third direction is severe.

[0105] By using the stop groove 40a and the stop member 40 to stop along the third direction, the probability of the heat exchange assembly 20 colliding with the first housing 51 and the second housing 52 along the third direction is reduced.

[0106] In some embodiments, see Figure 5 and Figure 6 The beam structure 10 is provided with a stop 40, and the heat exchange assembly 20 is provided with a stop groove 40a.

[0107] In this way, it avoids directly opening grooves in the beam structure 10, reducing the adverse effects on the structural strength of the beam structure 10.

[0108] The specific method of forming the stop 40 on the beam structure 10 is not limited. For example, after the beam structure 10 and the stop 40 are manufactured separately, the stop 40 and the beam structure 10 are connected by welding. Alternatively, the beam structure 10 and the stop 40 are processed into an integral structure by machining, additive manufacturing, or other methods.

[0109] In some embodiments, see Figure 6 The heat exchange assembly 20 includes a first heat exchange body 21 and a second heat exchange body 22. The second heat exchange body 22 is connected to one end of the first heat exchange body 21 along a third direction. The first direction, the second direction and the third direction intersect each other. At least a portion of the first heat exchange body 21 is located on one side of the battery cell assembly 30 along the second direction, and at least a portion of the second heat exchange body 22 is located on one side of the battery cell assembly 30 along the third direction.

[0110] Thus, the first heat exchanger 21 and the second heat exchanger 22 can constrain the position of the battery cell assembly 30 from the second direction and the third direction, respectively, thereby improving the positional stability of the battery cell assembly 30 within the battery device 100 and facilitating the normal operation of the battery cell assembly 30.

[0111] During the assembly of the battery device 100, the first heat exchanger body 21 and the second heat exchanger body 22 can be first bonded and fixed to the battery cell assembly 30, and then both can be placed together into the space formed by the beam structure 10 so that the stop member 40 on the beam structure 10 engages with the stop groove 40a on the heat exchange assembly 20. In this way, the probability of adhesive scuffing caused by relative movement between the heat exchange assembly 20 and the battery cell assembly 30 is reduced during the assembly of the beam structure 10 and the heat exchange assembly 20.

[0112] The first heat exchanger body 21 and the second heat exchanger body 22 of the same heat exchange assembly 20 are located on the same side of the beam structure 10 along the first direction.

[0113] In some embodiments, see Figure 5 and Figure 7 The stop groove 40a is provided at at least one end of the first heat exchange body 21 along the first direction. This makes it easier to arrange more stop grooves 40a on the heat exchange assembly 20 and reduce the manufacturing difficulty of the stop grooves 40a.

[0114] In some embodiments, see Figure 4 There are two beam structures 10, and the two beam structures 10 are spaced apart along the first direction to form an accommodating space between them. The battery cell assembly 30 is located in the accommodating space. The first heat exchange body 21 is provided with stop grooves 40a at both ends along the first direction so that the two beam structures 10 can constrain the heat exchange assembly 20.

[0115] In some embodiments, see Figure 8 The heat exchange assembly 20 includes a heat exchange channel 20a for conveying the heat exchange medium. The heat exchange channel 20a includes a first channel 20aa and a second channel 20ab. The first channel 20aa is located inside the first heat exchange body 21, and the second channel 20ab is located inside the second heat exchange body 22.

[0116] Thus, the heat exchange component 20 forms a heat transfer path with the battery cell assembly 30 along both the second and third directions, thereby improving the temperature control effect of the battery cell assembly 30.

[0117] At least a portion of the heat exchange channel 20a extends along a first direction.

[0118] The specific number of 20aa in the first channel is unlimited; it can be one or more, such as two, three, four, five, etc.

[0119] The specific number of the second channel 20ab is not limited; it can be one or more, such as two, three, four, five, etc.

[0120] In some embodiments, there is only one second heat exchanger body 22, and the second heat exchanger body 22 is located only on one side of the first heat exchanger body 21 along the second direction; in other embodiments, see [reference needed]. Figure 8 Each of the first heat exchange bodies 21 is provided with a second heat exchange body 22 on one side along the second direction, so that the heat exchange assembly 20 restricts two different battery cell assemblies 30 along the third direction.

[0121] It is understandable that the first heat exchanger body 21 and the second heat exchanger body 22 are respectively provided with the first channel 20aa and the second channel 20ab. In order to maintain good efficiency, the first heat exchanger body 21 and the second heat exchanger body 22 are both thin plate structures, which results in low structural strength of the first heat exchanger body 21 and the second heat exchanger body 22.

[0122] In some embodiments, see Figure 7 The heat exchange assembly 20 also includes a collector 23, which is located on the same side of the first heat exchange body 21 and the second heat exchange body 22 along the first direction and is connected to both. The heat exchange channel 20a also includes a collection cavity 20ac, and the first channel 20aa and the second channel 20ab are both connected to the collection cavity 20ac. The stop groove 40a is provided in the collector 23.

[0123] The heat exchange medium in the manifold 20ac can be diverted to the first channel 20aa and the second channel 20ab, or the heat exchange medium in the first channel 20aa and the second channel 20ab can be collected into the manifold 20ac.

[0124] Thus, the stop groove 40a is set on the current collector 23 with high structural strength, which helps to reduce the risk of structural damage to the stop groove 40a when the stop member 40 and the stop groove 40a are in a stop-fitting state.

[0125] In some embodiments, see Figure 6 and Figure 7 The second heat exchange body 22 is provided with a clearance channel 22a that runs through a third direction, and the stop 40 can pass through the clearance channel 22a in a third direction.

[0126] Thus, during the assembly of the heat exchange component 20 and the beam structure 10, the stop 40 can directly pass through the clearance channel 22a along the third direction and then be embedded into the stop groove 40a along the second direction. This helps to reduce the relative movement distance between the heat exchange component 20 and the beam structure 10 during the arrangement of the heat exchange component 20 and the beam structure 10, which helps to improve assembly efficiency. At the same time, it also helps to reduce the total size of the heat exchange component 20 and the beam structure 10 along the third direction after they are connected and fixed, making the structure more compact.

[0127] In some embodiments, see Figure 6 and Figure 7 The clearance channel 22a is located on the side of the heat exchanger body closer to the first heat exchanger body 21 along the second direction. This further helps to reduce the relative movement distance between the heat exchanger assembly 20 and the beam structure 10 during assembly, thereby further improving assembly efficiency.

[0128] In some embodiments, see Figure 6 The beam structure 10 is provided with a positioning groove 10a, which is open on one side along the third direction and penetrates the beam structure 10 along the first direction. The heat exchange component 20 is provided with a collector 23 at at least one end along the first direction, and the collector 23 can enter and exit the positioning groove 10a along the third direction.

[0129] With the collector 23 located in the positioning groove 10a, the collector 23 and the inner wall of the positioning groove 10a are constrained along the second direction, thereby limiting the orientation of the heat exchange component 20 relative to the beam structure 10 in the second direction. This achieves a rough positioning between the heat exchange component 20 and the beam structure 10 during assembly, which helps to reduce the time required for adjusting the position between the stop 40 and the stop groove 40a, and is beneficial to improving assembly efficiency.

[0130] In some embodiments, see Figure 6 The stop 40 and the positioning groove 10a are arranged along the third direction. This helps to reduce the relative distance between the stop 40 and the stop groove 40a during the process of the current collector 23 and the positioning groove 10a cooperating, thereby further improving the assembly efficiency.

[0131] In some embodiments, the dimension of the positioning groove 10a along the second direction is larger than the dimension of the stop member 40 along the second direction, so that after the current collector 23 is embedded in the positioning groove 10a, the position between the stop member 40 and the stop groove 40a can be adjusted along the second direction.

[0132] The collector 23 is provided with a collection cavity, and the heat exchange channels 20a in the heat exchange assembly 20 are all connected to the collection cavity.

[0133] In some embodiments, see Figure 3 and Figure 4There are multiple battery cell assemblies 30, and at least one battery cell assembly 30 is provided between two adjacent heat exchange assemblies 20 along the second direction.

[0134] In some embodiments, see Figure 9 and Figure 10 The battery device 100 also includes a limiting member 70, which has a first limiting groove 70a and a second limiting groove 70b. The first limiting groove 70a and the second limiting groove 70b are open on the same side along a third direction. The first limiting groove 70a is open on one side along a first direction. A portion of the current collector 23 can be embedded in the first limiting groove 70a along a third direction and abut against the inner wall of the first limiting groove 70a along a second direction. A portion of the beam structure 10 can be embedded in the second limiting groove 70b along a third direction and abut against the inner wall of the second limiting groove 70b along a first direction.

[0135] With the relative positions between the stop member 40 and the stop groove 40a within a preset range, a portion of the beam structure 10 and a portion of the current collector 23 are respectively embedded into the first limiting groove 70a and the second limiting groove 70b along a third direction. Thus, the limiting member 70 achieves constraint on the beam structure 10 and the heat exchange assembly 20 in the first and second directions, improving the stability of the relative positions between the beam structure 10 and the heat exchange assembly 20.

[0136] In some embodiments, see Figure 10 The first limiting groove 70a penetrates the limiting member 70 along the first direction, and the second limiting groove 70b penetrates the limiting member 70 along the second direction. The first limiting groove 70a and the second limiting groove 70b are connected to each other, thus simplifying the manufacturing process of the limiting member 70.

[0137] In some embodiments, see Figure 6 The number of heat exchange components 20 is multiple, and each heat exchange component 20 is arranged along the second direction. A portion of the current collector 23 is located on the side of the beam structure 10 away from the battery cell assembly 30 along the first direction via the positioning groove 10a. The battery device 100 also includes a current collector pipe 60, which is located on the side of the beam structure 10 away from the battery cell assembly 30 along the first direction. The current collector pipe 60 is connected to the current collector 23 of at least two adjacent heat exchange components 20 along the second direction.

[0138] This helps to reduce the overall size of the battery device 100 in the third direction; by separating the current collection pipe 60 and the battery cell assembly 30 by the beam structure 10, the probability of interference between their respective installations is reduced.

[0139] In some embodiments, see Figure 11The beam structure 10 includes a beam body 11 and a stop protrusion 12. At least a portion of the battery cell assembly 30 is located on a first side of the beam body 11 along a first direction. The stop protrusion 12 is located at one end of the beam body 11 along a third direction and protrudes toward the first side of the first direction. The first direction, the second direction and the third direction intersect each other. The heat exchange assembly 20 abuts against the stop protrusion 12 along the third direction.

[0140] Thus, the stop protrusion 12 can be used to support the heat exchange assembly 20, thereby restricting the position of the heat exchange assembly 20 and the beam structure 10 in the third direction during the process of adjusting the position of the heat exchange assembly 20 relative to the beam structure 10 in the second direction so that the stop member 40 and the stop groove 40a can cooperate, thereby improving the convenience of assembly.

[0141] In some embodiments where the stop protrusion 12 and the positioning groove 10a are provided, see [reference]. Figure 6 The stop protrusion 12 and the positioning groove 10a are located on different sides of the beam structure 10 along the third direction.

[0142] In some embodiments, each heat exchange component 20 is first placed in the space between two beam structures 10, and the position of the first heat exchange component 20 along the second direction is adjusted so that the position between the stop 40 and the stop groove 40a of the beam structure 10 meets the preset requirements. Then, a battery cell assembly 30 is bonded and fixed to the first heat exchange body 21 and the second heat exchange body 22 of the first heat exchange component 20. Then, the position of the second heat exchange component 20 is adjusted along the second direction so that the position between the stop 40 and the stop groove 40a of the beam structure 10 of the second heat exchange component 20 meets the preset requirements and is bonded and fixed to the first battery cell assembly 30. This process is repeated, with each battery cell assembly 30 placed in turn and the position of each heat exchange component 20 adjusted along the second direction until the last heat exchange component 20 meets the preset requirements between the stop 40 and the stop groove 40a of the beam structure 10 and is bonded and fixed to the last battery cell assembly 30. This makes it difficult for the adhesive between the heat exchange component 20 and the battery cell component 30 to be scratched, allowing the adhesive to be distributed more evenly and maintaining the stability of the bond.

[0143] In some embodiments, the heat exchange components 20 are arranged along a second direction, and battery cell components 30 are arranged between two adjacent heat exchange components 20. The heat exchange components 20 and the battery cell components 30 in contact with them are bonded and fixed to form an integral structure, and the integral structure is placed in the space between the two beam structures 10. Then, the integral structure is driven to move relative to the beam structure 10 along the second direction, so that the positions of the stop members 40 and the stop grooves 40a between the heat exchange components 20 and the beam structure 10 meet the preset requirements. This simplifies the assembly steps.

[0144] In some embodiments, see Figure 11 The stop member 40 includes a main body 41 and a stop member 42. The main body 41 extends along a first direction. The stop member 42 is disposed at one end of the main body 41 away from the beam structure 10 and the heat exchange assembly 20 where the stop member 40 is disposed, along the first direction. The stop member 42 protrudes from the main body 41 along a third direction. The first direction, the second direction and the third direction intersect each other. The stop groove 40a is open on one side along the first direction. When at least a portion of the stop member 40 is located within the stop groove 40a, at least a portion of the main body 41 can pass through the stop groove 40a along the first direction. The inner wall of the stop groove 40a and the stop member 42 stop and cooperate along the first direction.

[0145] Thus, the stop part 42 enables a stop fit between the stop member 40 and the inner wall of the stop groove 40a along the first direction. The part of the beam structure 10 and the heat exchange assembly 20 that has the stop groove 40a can be located between the other part that has the stop member 40 and the stop part 42, thereby improving the stability of the stop fit between the stop member 40 and the structure that forms the stop groove 40a.

[0146] In some embodiments, in the projection plane perpendicular to the second direction, the shape of the projection of the stop member 40 along the second direction is the same as the shape of the projection of the stop groove 40a along the second direction. In this way, when the stop member 40 is embedded in the stop groove 40a along the second direction, it is beneficial to reduce the shaking of the stop member 40 relative to the inner wall of the stop groove 40a and improve the stability of the heat exchange assembly 20 relative to the beam structure 10.

[0147] In some embodiments, see Figure 11 The number of stop members 40 is multiple, and the multiple stop members 40 are arranged along a third direction, with the first direction, the second direction and the third direction intersecting each other.

[0148] In this way, the various stop members 40 arranged along the third direction will not interfere with each other during the movement of relative stop grooves 40a, which is beneficial to improving assembly efficiency.

[0149] See Figure 7 The heat exchange component 20 has multiple stop grooves 40a at one end along the first direction, and the multiple stop grooves 40a are arranged along the third direction.

[0150] In some embodiments where multiple stop grooves 40a are provided, each stop groove 40a is provided on the first heat exchange body 21.

[0151] In some embodiments where the number of stop members 40 is multiple, multiple stop members 40 arranged along a third direction are formed into a group, and multiple groups of stop members 40 are spaced apart along a second direction. Each group of stop members 40 cooperates with a stop groove 40a on a heat exchange component 20.

[0152] During the charging and discharging process of the battery device 100, the outer contour of the battery cell 31 in the battery cell assembly 30 will expand.

[0153] In some embodiments, see Figure 3 The battery cell assembly 30 includes a plurality of battery cells 31, which are arranged along a first direction, and the beam structure 10 abuts against the battery cell assembly 30 along the first direction.

[0154] It is understandable that, since multiple battery cells 31 are arranged along the first direction, the dimensional change caused by the expansion of the battery cell assembly 30 along the first direction is the greatest.

[0155] In other words, the beam structure 10 forms the expansion beam in the battery device 100.

[0156] Thus, by constraining the heat exchange component 20 along the first direction with the beam structure 10, the suppression of the expansion of the battery cell assembly 30 along the first direction is improved.

[0157] In some embodiments where there are two beam structures 10 spaced apart from each other along a first direction, the battery cell assembly 30 is sandwiched between the two beam structures 10 along the first direction.

[0158] In some embodiments, the battery cell assembly 30 further includes an insulating element that is sandwiched between the beam structure 10 and the battery cell 31 at least along a first direction to reduce the risk of short-circuit connection between the battery cell 31 and the beam structure 10.

[0159] In some embodiments, see Figure 8 The heat exchange assembly 20 includes a heat exchange channel 20a for conveying the heat exchange medium. The heat exchange channel 20a includes a first channel 20aa and a second channel 20ab. The first channel 20aa is located on one side of the battery cell assembly 30 along the second direction, and the second channel 20ab is located on one side of the battery cell assembly 30 along the third direction. The first direction, the second direction and the third direction intersect each other.

[0160] Thus, the heat exchange component 20 forms a heat transfer path with the battery cell assembly 30 along both the second and third directions, thereby improving the temperature control effect of the battery cell assembly 30.

[0161] The battery device 100 in a specific embodiment of this application is as follows: The battery device 100 includes a beam structure 10, a battery cell assembly 30, a heat exchange assembly 20, a housing assembly 50, and a limiting member 70. At least a portion of the battery cell assembly 30 and at least a portion of the heat exchange assembly 20 are located on the same side of the beam structure 10 along a first direction, and on the same side of the heat exchange assembly 20 along a second direction, forming a heat transfer path between them. The first direction and the second direction intersect. The beam structure 10 is provided with a stop member 40, and the heat exchange assembly 20 is provided with a stop groove 40a. The stop groove 40a is provided with an inlet and outlet 40aa. The inlet and outlet 40aa are located on the side of the stop groove 40a along the second direction. The stop member 40 can enter and exit the stop groove 40a along the inlet and outlet 40aa. When at least a portion of the stop member 40 is located within the stop groove 40a, the inner wall of the stop groove 40a engages with the stop member 40 along the first direction. With at least a portion of the stop member 40 located within the stop groove 40a, the inner wall of the stop groove 40a engages with the stop member 40 along a third direction, the first direction, the second direction, and the third direction intersect each other. The battery device 100 includes a limited state and an active state. The stop member 40 is capable of moving in and out of the stop groove 40a along the inlet / outlet 40aa in the second direction to switch the battery device 100 between the limited state and the active state. In the limited state, at least a portion of the stop member 40 is located within the stop groove 40a, such that the inner wall of the stop groove 40a engages with the stop member 40 along the first direction. In the active state, the stop member 40 is located outside the stop groove 40a, allowing the beam structure 10 and the heat exchange assembly 20 to move relative to each other in at least one of the first direction and the third direction. The housing assembly 50 includes a first housing 51 and a second housing 52. The first housing 51 and the second housing 52 are arranged opposite each other along a third direction and enclose an installation space 100a. The beam structure 10, the heat exchange assembly 20, and the battery cell assembly 30 are all located within the installation space 100a. The heat exchange assembly 20 includes a first heat exchange body 21 and a second heat exchange body 22. The second heat exchange body 22 is connected to one end of the first heat exchange body 21 along a third direction. The first direction, the second direction, and the third direction intersect each other. At least a portion of the first heat exchange body 21 is located on one side of the battery cell assembly 30 along the second direction, and at least a portion of the second heat exchange body 22 is located on one side of the battery cell assembly 30 along the third direction. A stop groove 40a is provided at at least one end of the first heat exchange body 21 along the first direction. The heat exchange assembly 20 includes a heat exchange channel 20a for conveying the heat exchange medium. The heat exchange channel 20a includes a first channel 20aa and a second channel 20ab. The first channel 20aa is located inside the first heat exchange body 21, and the second channel 20ab is located inside the second heat exchange body 22. The second heat exchange body 22 is provided with a clearance channel 22a extending in a third direction, and the stop member 40 can pass through the clearance channel 22a in a third direction.The beam structure 10 is provided with a positioning groove 10a, which is open on one side along the third direction and penetrates the beam structure 10 along the first direction. The heat exchange assembly 20 also includes a collector 23, which is located on the same side of the first heat exchange body 21 and the second heat exchange body 22 along the first direction and is connected to both. The heat exchange channel 20a also includes a collection cavity 20ac, and the first channel 20aa and the second channel 20ab are both connected to the collection cavity 20ac. A stop groove 40a is provided in the collector 23. The collector 23 can enter and exit the positioning groove 10a along the third direction, and the stop 40a and the positioning groove 10a are arranged along the third direction. The limiting member 70 is provided with a first limiting groove 70a and a second limiting groove 70b. The first limiting groove 70a and the second limiting groove 70b are open on the same side along a third direction. The first limiting groove 70a is open on one side along a first direction. A portion of the current collector 23 can be embedded in the first limiting groove 70a along a third direction and abut against the inner wall of the first limiting groove 70a along a second direction. A portion of the beam structure 10 can be embedded in the second limiting groove 70b along a third direction and abut against the inner wall of the second limiting groove 70b along a first direction. A portion of the current collector 23 is located on the side of the beam structure 10 away from the battery cell assembly 30 along the first direction via the positioning groove 10a. The battery device 100 also includes a current collection pipe 60, which is located on the side of the beam structure 10 away from the battery cell assembly 30 along the first direction. The current collection pipe 60 connects at least the current collectors 23 of two adjacent heat exchange components 20 along the second direction. The beam structure 10 includes a beam body 11 and a stop protrusion 12. At least a portion of the battery cell assembly 30 is located on a first side of the beam body 11 along a first direction. The stop protrusion 12 is located at one end of the beam body 11 along a third direction and protrudes toward the first side of the first direction. The heat exchange assembly 20 abuts against the stop protrusion 12 along a third direction. The stop member 40 includes a main body 41 and a stop portion 42. The main body 41 extends along a first direction, and the stop portion 42 is located at one end of the main body 41 away from the beam structure 10 and the heat exchange assembly 20 where the stop member 40 is located along the first direction. The stop portion 42 protrudes from the main body 41 along a third direction. The first direction, the second direction, and the third direction intersect each other. The stop groove 40a is open on one side along the first direction. With at least a portion of the stop member 40 located within the stop groove 40a, at least a portion of the main body 41 can pass through the stop groove 40a along the first direction. The inner wall of the stop groove 40a engages with the stop portion 42 along the first direction. There are multiple stop members 40, which are arranged along a third direction, and the first direction, the second direction, and the third direction intersect each other. The battery cell assembly 30 includes multiple battery cells 31, which are arranged along the first direction. The beam structure 10 abuts against the battery cell assembly 30 along the first direction.

[0162] This application embodiment also provides an electrical device, which includes any of the battery devices 100 in the foregoing embodiments, and the battery devices 100 are used as the power source for the electrical device.

[0163] Thus, by using the battery device in the aforementioned embodiments, it is beneficial to improve the overall assembly efficiency and operational stability of the electrical device.

[0164] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this application are included within the scope of protection of this application.

Claims

1. A battery device, characterized in that, include: Beam structure; Heat exchange components are used to transport heat exchange media; A battery cell assembly, wherein at least a portion of the battery cell assembly and at least a portion of the heat exchange assembly are located on the same side of the beam structure along a first direction, and the battery cell assembly is located on one side of the heat exchange assembly along a second direction, with a heat transfer path formed between them, wherein the first direction intersects the second direction. One of the heat exchange component and the beam structure is provided with a stop member, and the other is provided with a stop groove. The stop groove is provided with an inlet and an outlet, which are located on one side of the stop groove along the second direction. The stop member can enter and exit the stop groove along the inlet and an outlet. When at least a part of the stop member is located within the stop groove, the inner wall of the stop groove and the stop member stop and cooperate with the stop member along the first direction. The beam structure is provided with a positioning groove, which is open on one side along a third direction and penetrates the beam structure along the first direction. The first direction, the second direction and the third direction intersect each other. The heat exchange component is provided with a collector at at least one end along the first direction, and the collector can enter and exit the positioning groove along the third direction.

2. The battery device according to claim 1, characterized in that, With at least a portion of the stop member located within the stop groove, the inner wall of the stop groove engages with the stop member in a third-direction stop.

3. The battery device according to claim 2, characterized in that, The battery device includes a limited state and an active state, and the stop member can move in and out of the stop groove along the inlet and outlet in the second direction to switch the battery device between the limited state and the active state. In the limited position, at least a portion of the stop member is located within the stop groove, such that the inner wall of the stop groove engages with the stop member along the first direction. In the active state, the stop member is located outside the stop groove, so that the beam structure and the heat exchange assembly can move relative to each other in at least one of the first direction and the third direction.

4. The battery device according to claim 2, characterized in that, The battery device includes a housing assembly, which includes a first housing and a second housing. The first housing and the second housing are arranged opposite to each other along the third direction and enclose an installation space. The beam structure, the heat exchange assembly, and the battery cell assembly are all located within the installation space.

5. The battery device according to claim 1, characterized in that, The beam structure is provided with the stop member, and the heat exchange assembly is provided with the stop groove.

6. The battery device according to claim 5, characterized in that, The heat exchange assembly includes a first heat exchange body and a second heat exchange body. The second heat exchange body is connected to one end of the first heat exchange body along a third direction. At least a portion of the first heat exchange body is located on one side of the battery cell assembly along the second direction. At least a portion of the second heat exchange body is located on one side of the battery cell assembly along the third direction. The stop groove is provided at least one end of the first heat exchange body along the first direction.

7. The battery device according to claim 6, characterized in that, The heat exchange assembly includes a heat exchange channel for conveying the heat exchange medium. The heat exchange channel includes a first channel and a second channel. The first channel is located inside the first heat exchange body, and the second channel is located inside the second heat exchange body.

8. The battery device according to claim 7, characterized in that, The heat exchanger is located on the same side of the first heat exchange body and the second heat exchange body along the first direction and is connected to both. The heat exchange channel also includes a heat collection cavity, and the first channel and the second channel are both connected to the heat collection cavity. The stop groove is provided in the heat exchanger.

9. The battery device according to claim 6, characterized in that, The second heat exchanger body is provided with a clearance channel that runs through the third direction, and the stop member can pass through the clearance channel along the third direction.

10. The battery device according to claim 5, characterized in that, The stop and the positioning groove are arranged along the third direction.

11. The battery device according to claim 10, characterized in that, The battery device further includes a limiting member, which has a first limiting groove and a second limiting groove. The first limiting groove and the second limiting groove are open on the same side along the third direction. The first limiting groove is open on one side along the first direction. A portion of the current collector can be embedded in the first limiting groove along the third direction and abut against the inner wall of the first limiting groove along the second direction. A portion of the beam structure can be embedded in the second limiting groove along the third direction and abut against the inner wall of the second limiting groove along the first direction.

12. The battery device according to claim 11, characterized in that, The number of heat exchange components is multiple, and each heat exchange component is arranged along the second direction. A portion of the current collector is located on the side of the beam structure away from the battery cell assembly along the first direction via the positioning groove. The battery device also includes a current collector pipe located on the side of the beam structure away from the battery cell assembly along the first direction. The current collector pipe is connected to the current collectors of at least two adjacent heat exchange components along the second direction.

13. The battery device according to claim 1, characterized in that, The beam structure includes a beam body and a stop protrusion. At least a portion of the battery cell assembly is located on a first side of the beam body along the first direction. The stop protrusion is located at one end of the beam body along a third direction and protrudes toward the first side of the first direction. The heat exchange assembly abuts against the stop protrusion along the third direction.

14. The battery device according to claim 1, characterized in that, The stop member includes a main body and a stop portion. The main body extends along the first direction. The stop portion is disposed at one end of the main body along the first direction away from either the beam structure or the heat exchange assembly in which the stop member is disposed. The stop portion protrudes from the main body along a third direction. The stop groove is open on one side along the first direction. When at least a portion of the stop member is located within the stop groove, at least a portion of the main body can pass through the stop groove along the first direction. The inner wall of the stop groove and the stop portion stop in a stop-fitting manner along the first direction.

15. The battery device according to claim 1, characterized in that, The number of the stops is multiple, and the multiple stops are arranged along a third direction.

16. The battery device according to claim 1, characterized in that, The battery cell assembly includes multiple battery cells, which are arranged along the first direction, and the beam structure abuts against the battery cell assembly along the first direction.

17. The battery device according to claim 1, characterized in that, The heat exchange assembly includes a heat exchange channel for conveying a heat exchange medium. The heat exchange channel includes a first channel and a second channel. The first channel is located on one side of the battery cell assembly along the second direction, and the second channel is located on one side of the battery cell assembly along the third direction.

18. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 17, the battery device being used as a power source for the electrical device.

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