Battery device and electric appliance

Abstract

This application relates to a battery device and an electrical appliance. The battery device includes a battery pack and a heat exchange assembly. The battery pack includes at least two battery cells arranged side-by-side along a first direction. The heat exchange assembly includes a deformable element. The deformable element has a flexible wall that encloses an inner cavity. The deformable element also has a heat exchange inlet and a heat exchange outlet communicating with the inner cavity. The heat exchange inlet is used to input a heat exchange medium into the inner cavity, and the heat exchange outlet is used to output the heat exchange medium discharged from the inner cavity. The flexible wall is configured to expand and deform when the inner cavity is filled with the heat exchange medium, and the flexible wall adheres to the surface of adjacent battery cells for heat exchange. An electrical appliance includes the aforementioned battery device. In the aforementioned battery device and electrical appliance, the expansion and deformation of the inner cavity of the deformable element when filled with the heat exchange medium, and the adherence of the flexible wall to the surface of the battery cells for heat exchange, facilitates improved heat exchange efficiency and uniformity of the battery cells.

Description

Technical Field

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

[0002] With the popularization and promotion of new energy vehicles, their charging and discharging performance and range are increasingly attracting attention and importance. Power batteries, a type of rechargeable battery, are the power source for new energy vehicles and are widely used in the field.

[0003] Power batteries continuously generate heat during charging and discharging. If this heat cannot be dissipated in time, the battery temperature can rise, affecting its performance. Current technology typically uses traditional air-cooling heat exchange, which involves installing air ducts within the battery casing and using a fan to circulate air along these ducts to remove the generated heat. However, this traditional air-cooling method usually involves only localized, short-term, and non-contact contact with the battery, resulting in limited heat exchange area and intensity, leading to low overall heat dissipation efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide a battery device and electrical equipment to address the problem of low overall heat dissipation efficiency of existing batteries.

[0005] A battery device includes a battery pack and a heat exchange assembly. The battery pack includes at least two battery cells arranged side by side along a first direction. The heat exchange assembly includes a deformable element. The deformable element has a flexible wall that encloses an inner cavity. The deformable element also has a heat exchange inlet and a heat exchange outlet communicating with the inner cavity. The heat exchange inlet is used to input a heat exchange medium into the inner cavity, and the heat exchange outlet is used to output the heat exchange medium discharged from the inner cavity. The flexible wall is configured to expand and deform when the inner cavity is filled with a heat exchange medium, and the flexible wall is in contact with the surface of adjacent battery cells and exchanges heat. The aforementioned battery device includes a heat exchange component comprising a deformable element. When the inner cavity of the deformable element is filled with a heat exchange medium, it expands and deforms, and the flexible wall adheres to the surface of the battery cell and exchanges heat. This significantly increases the effective heat exchange area between the deformable element and the battery cell, which is beneficial for improving the heat exchange efficiency and uniformity of the battery cell. It also improves the uneven heat exchange caused by poor contact in traditional rigid heat exchange structures. By adjusting the input and output of the heat exchange medium, the degree of expansion of the deformable element can be flexibly controlled to match the heat exchange requirements under different operating conditions, enabling the battery device to maintain stable performance under various environmental conditions.

[0006] In some embodiments, the flexible wall comprises multiple structural layers, all of which are stacked along the thickness direction and combined into a single unit. This multi-layered structural design of the flexible wall not only provides excellent thermal conductivity but also maintains high durability and reliability under complex operating conditions, enabling the deformable component to achieve both high heat transfer performance and operational stability.

[0007] In some embodiments, the multiple structural layers include a first sublayer, which is configured as the outer structure of the deformable element and is used to contact the surface of the battery cell. Thus, the provision of the first sublayer effectively improves the heat exchange efficiency between the deformable element and the battery cell, while also enhancing the stability and reliability of the deformable element during long-term use.

[0008] In some embodiments, the first sublayer is any one of silicone-based thermal conductive materials, carbon-based thermal conductive materials, and metal-based thermal conductive materials. This allows for flexible selection of the material of the first sublayer according to heat exchange requirements, improving the adaptability of the deformable component and further optimizing the overall thermal management capability of the battery device.

[0009] In some embodiments, the multiple structural layers further include a second sublayer attached to the inside of the first sublayer. The second sublayer is configured as the middle layer structure of the deformable component and is used to withstand expansion and contraction loads. Thus, the second sublayer plays a supporting role in the structure of the deformable component, maintaining the stability of the flexible wall during expansion and contraction, and providing a reliable backing for the first sublayer, thereby further improving the durability and heat exchange efficiency of the deformable component.

[0010] In some embodiments, the second sublayer is any one of a polyurethane-based material, a rubber-based material, or a composite membrane / airtight membrane. This allows for flexible selection of the second sublayer material based on heat exchange requirements, improving the adaptability of the deformable component and further optimizing the overall thermal management capabilities of the battery device.

[0011] In some embodiments, the multiple structural layers further include a third sublayer attached to the inside of the second sublayer. The third sublayer is configured as an inner layer structure of the deformable element and is used to enhance the disturbance of the heat exchange medium. Thus, the arrangement of the third sublayer enhances the flow of the heat exchange medium in the inner cavity, improves the heat exchange capacity of the deformable element, and enables the battery device to regulate temperature more quickly and uniformly.

[0012] In some embodiments, the third sublayer is made of a material with a porous structure, a fiber-filled structure, or a microchannel structure. This allows for flexible selection of the third sublayer material based on heat exchange requirements, improving the adaptability of the deformable component and further optimizing the overall thermal management capabilities of the battery device.

[0013] In some embodiments, the deformable component further includes two connectors, each located at one end of the inner cavity and both being rigid structures. Each connector has a first end away from the inner cavity and a second end close to the inner cavity. The first end of one connector is configured as a heat exchange inlet, and the first end of the other connector (202) is configured as a heat exchange outlet. Thus, the connector configuration not only optimizes the flow path of the heat exchange medium but also further enhances the overall performance of the deformable component, enabling it to have higher stability and adaptability in various application scenarios.

[0014] In some embodiments, the flow area at the first end of any connector is smaller than the flow area at its second end. This not only improves the flow efficiency of the heat exchange medium within the cavity but also reduces energy loss due to fluid resistance, effectively preventing localized overheating or insufficient cooling caused by excessively fast or slow flow rates.

[0015] In some embodiments, the heat exchange inlet and the heat exchange outlet are located at opposite ends of the inner cavity along the first direction. Thus, because the heat exchange inlet and outlet are located at opposite ends of the inner cavity along the first direction, the flow path of the heat exchange medium is extended, enabling a more uniform flow field distribution of the heat exchange medium within the inner cavity, further improving heat exchange efficiency.

[0016] In some embodiments, the deformable element is disposed on at least one side of the battery pack along a second direction, which intersects with the first direction. Thus, the position of the deformable element can be flexibly adjusted according to the actual usage scenario. The deformable element not only effectively absorbs external impact forces but also provides additional support when the battery pack is subjected to lateral compression. The multi-layered structure of the flexible wall gives it good elastic recovery capability under pressure, thereby reducing the risk of damage caused by collisions or vibrations.

[0017] In some embodiments, the battery pack has deformation elements on opposite sides along the second direction; the heat exchange assembly also includes a first pipeline for supplying heat exchange medium to the heat exchange inlets of all deformation elements; the first pipeline has multiple first interfaces, each of which is connected to a corresponding heat exchange inlet. Thus, the arrangement of the first pipeline not only achieves efficient delivery and uniform distribution of the heat exchange medium, but also improves the reliability and ease of maintenance of the entire heat exchange assembly.

[0018] In some embodiments, the heat exchange assembly further includes a second conduit for discharging the heat exchange medium discharged from the heat exchange outlets of all deformable components. The second conduit has multiple second ports, each connected to a corresponding heat exchange outlet. Thus, the second conduit not only efficiently collects and discharges the heat exchange medium but also provides stable support for thermal management, thereby optimizing the operating efficiency and lifespan of the battery device.

[0019] In some embodiments, the heat exchange assembly further includes a first regulating member disposed at the heat exchange inlet and used to regulate the input amount of the heat exchange medium. Thus, the first regulating member can adjust the input amount of the heat exchange medium to regulate the expansion degree of the deformable component, enhancing the adaptability and practicality of the heat exchange assembly, and enabling the battery device to flexibly adjust its thermal management performance under different operating conditions.

[0020] In some embodiments, the heat exchange assembly further includes a second regulating member located at the heat exchange outlet and used to regulate the output of the heat exchange medium. Thus, the second regulating member can adjust the output of the heat exchange medium to regulate the degree of contraction of the deformable element, enhancing the adaptability and practicality of the heat exchange assembly and enabling the battery device to flexibly adjust its thermal management performance under different operating conditions.

[0021] An electrical device includes the aforementioned battery device. In this device, the heat exchange component includes a deformable element. When the inner cavity of the deformable element is filled with a heat exchange medium, it expands and deforms. The flexible wall adheres to the surface of the battery cell and exchanges heat, significantly increasing the effective heat exchange area between the deformable element and the battery cell. This improves the heat exchange efficiency and uniformity of the battery cell, mitigating the uneven heat exchange caused by poor contact in traditional rigid heat exchange structures. By adjusting the input and output of the heat exchange medium, the degree of expansion of the deformable element can be flexibly controlled to match the heat exchange requirements under different operating conditions, ensuring stable performance of the battery device under various environmental conditions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the electrical equipment in some embodiments of this application.

[0023] Figure 2 This is a schematic diagram of a battery device in some embodiments of this application.

[0024] Figure 3 This is a schematic diagram of the combination of battery pack and heat exchange component in some embodiments of this application.

[0025] Figure 4 for Figure 3 The image shows a top view of the battery pack and heat exchange components.

[0026] Figure 5 for Figure 3 The cross-sectional view of the deformable component in the heat exchange assembly shown.

[0027] Figure 6 for Figure 3 The isometric view of the deformable component in the heat exchange assembly shown.

[0028] Figure 7 for Figure 3 A schematic diagram of the first regulating element in the heat exchange assembly shown.

[0029] Figure label:

[0030] 10. Vehicle; 11. Controller; 12. Motor; 20. Battery assembly; 21. Housing; 21a. First part; 21b. Second part; 22. Battery cell;

[0031] 100. Battery pack;

[0032] 200, Heat exchange assembly; 201, Inner cavity; 201a, Heat exchange inlet; 201b, Heat exchange outlet; 202, Connector; 210, Deformation element; 211, First sub-layer; 212, Second sub-layer; 213, Third sub-layer; 220, First pipeline; 230, Second pipeline; 240, First regulating element. Detailed Implementation

[0033] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0035] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0036] 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.

[0037] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0038] 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).

[0039] 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.

[0040] 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.

[0041] With the popularization and promotion of new energy vehicles, their charging and discharging performance and range are increasingly attracting attention and importance. Power batteries, a type of rechargeable battery, are the power source for new energy vehicles and are widely used in the field.

[0042] Power batteries continuously generate heat during charging and discharging. If this heat cannot be dissipated in time, the battery temperature can rise, affecting its performance. Current technology typically uses traditional air-cooling heat exchange, which involves installing air ducts within the battery casing and using a fan to circulate air along these ducts to remove the generated heat. However, this traditional air-cooling method usually involves only localized, short-term, and non-contact contact with the battery, resulting in limited heat exchange area and intensity, leading to low overall heat dissipation efficiency.

[0043] Based on the above considerations, and after in-depth research, a battery device and electrical equipment were designed. In the battery device, the heat exchange component includes a deformable element. When the inner cavity of the deformable element is filled with a heat exchange medium, it expands and deforms. The flexible wall adheres to the surface of the battery cell and exchanges heat, significantly increasing the effective heat exchange area between the deformable element and the battery cell. This is beneficial for improving the heat exchange efficiency and uniformity of the battery cell and improves the uneven heat exchange caused by poor contact in traditional rigid heat exchange structures. By adjusting the input and output of the heat exchange medium, the degree of expansion of the deformable element can be flexibly controlled to match the heat exchange requirements under different operating conditions, so that the battery device can maintain stable performance under various environmental conditions.

[0044] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0045] For ease of explanation, the following embodiments will be described using a vehicle 10 as an example of an electrical device according to an embodiment of this application.

[0046] Please refer to Figure 1 Vehicle 10 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 20 is installed inside vehicle 10, and the battery device 20 can be located at the bottom, front, or rear of vehicle 10. The battery device 20 can be used to power vehicle 10; for example, it can serve as the operating power source for vehicle 10. Vehicle 10 may also include a controller 11 and a motor 12. The controller 11 controls the battery device 20 to supply power to the motor 12, for example, to meet the power needs of vehicle 10 during starting, navigation, and driving. In other embodiments of this application, the battery device 20 can not only serve as the operating power source for vehicle 10 but also as the driving power source for vehicle 10, replacing or partially replacing gasoline or natural gas to provide driving force for vehicle 10.

[0047] Please refer to Figure 2The battery device 20 includes a housing 21 and battery cells 22, with the battery cells 22 housed within the housing 21. The housing 21 provides a space for the battery cells 22 and can have various structures. In some embodiments, the housing 21 may include a first portion 21a and a second portion 21b, which overlap each other, collectively defining a space for accommodating the battery cells 22. The second portion 21b may be a hollow structure with one open end, while the first portion 21a may be a plate-like structure, covering the open side of the second portion 21b so that the first and second portions 21b together define the space. Alternatively, both the first and second portions 21a may be hollow structures with one open side, with the open side of the first portion 21a covering the open side of the second portion 21b. Of course, the housing 21 formed by the first and second portions 21a can have various shapes, such as a cylindrical portion or a cuboid.

[0048] In the battery device 20, there can be multiple battery cells 22, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 22 are connected in both series and parallel. Multiple battery cells 22 can be directly connected in series, parallel, or in a mixed manner, and then the whole assembly of multiple battery cells 22 is housed in the housing 21. Of course, the battery device 20 can also be composed of multiple battery cells 22 first connected in series, parallel, or in a mixed manner to form a battery module, and then multiple battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is housed in the housing 21.

[0049] Each battery cell 22 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 22 can be cylindrical, flat, cuboid, or other shapes. The battery cell 22 can include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., but this application embodiment is not limited in this respect. The battery cell 22 can be cylindrical, flat, cuboid, or other shapes, but this application embodiment is not limited in this respect.

[0050] Please refer to Figures 3 to 5In one embodiment, the battery device 20 includes a battery pack 100 and a heat exchange assembly 200. The battery pack 100 includes at least two battery cells 22 arranged side by side along a first direction. The heat exchange assembly 200 includes a deformable element 210. The deformable element 210 has a flexible wall that encloses an inner cavity 201. The deformable element 210 also has a heat exchange inlet 201a and a heat exchange outlet 201b that communicate with the inner cavity 201. The heat exchange inlet 201a is used to input a heat exchange medium into the inner cavity 201, and the heat exchange outlet 201b is used to output the heat exchange medium discharged from the inner cavity 201. The flexible wall is configured to expand and deform when the inner cavity 201 is filled with a heat exchange medium. The flexible wall is in contact with the surface of the adjacent battery cell 22 and performs heat exchange.

[0051] It should be noted that the first direction is Figure 3 The X direction shown is the thickness direction of the battery cell 22. After the heat exchange medium enters the inner cavity 201 from the heat exchange inlet 201a, it flows along the inner surface of the flexible wall and exchanges heat with the battery cell 22 during the flow process, and then is discharged from the heat exchange outlet 201b.

[0052] In the embodiments of this application, the heat exchange component 200 is a component used for heat exchange with the battery pack 100, and the heat exchange component 200 can take various structural forms. In addition to the aforementioned deformable element 210, the heat exchange component 200 may also include other auxiliary components to achieve more efficient thermal management. For example, the heat exchange component 200 may also include a control unit, which can automatically adjust the input and output of the heat exchange medium according to the real-time temperature data of the battery pack 100, thereby dynamically adjusting the heat exchange intensity, which not only improves the working efficiency of the battery device 20, but also extends its service life.

[0053] In the embodiments of this application, the deformable element 210 is the part that directly contacts and conducts heat with the battery pack 100. The deformable element 210 has a flexible wall that encloses an inner cavity 201. When the inner cavity 201 is filled with a heat exchange medium, it can expand and deform. By adjusting the flow rate and pressure of the heat exchange medium, the degree of expansion of the deformable element 210 can be flexibly controlled to meet the heat dissipation requirements under different operating conditions, so that the battery device 20 can maintain stable performance under various environmental conditions. The flexible wall is made of a flexible material. For example, the flexible wall is made of a polymer, high molecular weight material, or composite material with excellent thermal conductivity and corrosion resistance, so that the flexible wall maintains stable physical and chemical properties during frequent expansion and contraction, and can maintain stable performance during long-term use. The thickness design of the flexible wall needs to consider the mechanical strength to meet the usage requirements while minimizing thermal resistance. Optionally, the heat exchange medium is a gaseous substance or a liquid substance. The gaseous substance can be room temperature air or compressed air, and the liquid substance can be a coolant.

[0054] In the embodiments of this application, the heat exchange inlet 201a is a port for inputting heat exchange medium into the inner cavity 201, and the heat exchange inlet 201a is connected to the feeding mechanism for supplying heat exchange medium. The position and number of heat exchange inlets 201a can be designed according to actual needs. For example, heat exchange inlets 201a can be set on one side or at multiple positions of the deformable member 210 to achieve uniform distribution of heat exchange medium.

[0055] In the embodiments of this application, the heat exchange outlet 201b is a port for outputting the heat exchange medium discharged from the inner cavity 201. The heat exchange outlet 201b can be located inside or outside the housing 21 of the battery device 20. The position of the heat exchange outlet 201b is usually opposite to the heat exchange inlet 201a, allowing the heat exchange medium to flow fully through the entire inner cavity 201, thereby improving heat exchange efficiency. The position and number of heat exchange outlets 201b can be designed according to actual needs. For example, the heat exchange outlets 201b can be set on one side or at multiple locations of the deformable member 210 to achieve uniform distribution of the heat exchange medium.

[0056] The aforementioned battery device 20 includes a heat exchange component 200 comprising a deformable element 210. When the inner cavity 201 of the deformable element 210 is filled with a heat exchange medium, it expands and deforms, and the flexible wall adheres to the surface of the battery cell 22 and performs heat exchange. This significantly increases the effective heat exchange area between the deformable element 210 and the battery cell 22, which is beneficial for improving the heat exchange efficiency and uniformity of the battery cell 22 and improving the uneven heat exchange caused by poor contact in traditional rigid heat exchange structures. By adjusting the input and output of the heat exchange medium, the degree of expansion of the deformable element 210 can be flexibly controlled to match the heat exchange requirements under different operating conditions, so that the battery device 20 can maintain stable performance under various environmental conditions.

[0057] Based on some embodiments in this application, please refer to Figure 3 The flexible wall consists of multiple structural layers, all of which are stacked along the thickness direction and combined into a whole.

[0058] It should be noted that the flexible wall includes multiple structural layers, that is: the flexible wall includes at least three structural layers, which are stacked and combined along the thickness direction.

[0059] In the embodiments of this application, each structural layer can be made of different materials according to functional requirements to synergistically achieve efficient heat exchange and stable physical properties. For example, the inner layer can be made of a material with high thermal conductivity to enhance heat transfer efficiency, while the outer layer can be made of a corrosion-resistant and wear-resistant material to improve durability.

[0060] In the embodiments of this application, all structural layers are stacked along the thickness direction and composited into a whole. Various composite methods can be used, such as hot pressing, bonding, or extrusion, to tightly bond the structural layers together, thereby reducing the probability of delamination or peeling of the flexible wall during expansion and contraction. The thickness of each structural layer can be designed according to actual needs, satisfying heat exchange efficiency while also considering mechanical strength and flexibility.

[0061] Through the above-mentioned design, the multi-layer structure of the flexible wall not only has excellent thermal conductivity, but also maintains high durability and reliability under complex working conditions, enabling the deformable component 210 to balance high heat transfer performance and operational stability.

[0062] Based on some embodiments in this application, please refer to Figure 5 and Figure 6 The multiple structural layers include a first sublayer 211, which is configured as the outer layer structure of the deformable element 210 and is used to contact the surface of the battery cell 22.

[0063] In the embodiments of this application, the first sub-layer 211 is the outer layer structure of the deformable element 210, directly contacting the surface of the battery cell 22. The material selection of the first sub-layer 211 needs to consider both thermal conductivity and wear resistance, so that it can efficiently transfer heat during long-term use while resisting the loss caused by frequent contact and friction. For example, the first sub-layer 211 can be made of a flexible composite material with high thermal conductivity, which can not only quickly conduct the heat generated by the battery cell 22 to the heat exchange medium, but also has a certain degree of corrosion resistance. The thickness of the first sub-layer 211 can be designed according to the heat exchange requirements, minimizing thermal resistance while ensuring sufficient mechanical strength, so as to optimize the overall heat exchange effect.

[0064] Through the above configuration, the first sub-layer 211 effectively improves the heat exchange efficiency between the deformation component 210 and the battery cell 22, while also enhancing the stability and reliability of the deformation component 210 during long-term use.

[0065] Based on some embodiments in this application, please refer to Figure 1 The first sublayer 211 is any one of organosilicon-based thermal conductive materials, carbon-based thermal conductive materials, and metal-based thermal conductive materials.

[0066] In the embodiments of this application, silicone-based thermal conductive materials refer to composite materials formed by using polyorganosiloxane as a matrix and filling it with thermally conductive fillers; specifically, silicone-based thermal conductive materials can be thermally conductive grease, thermally conductive gel, or thermally conductive silicone pads. Carbon-based thermal conductive materials refer to materials that use carbon as the main component and utilize the high in-plane thermal conductivity of carbon materials to achieve heat transfer; specifically, carbon-based thermal conductive materials can be graphene films or graphite films. Metal-based thermal conductive materials refer to materials that use metals or metal alloys as the main body and utilize the high thermal conductivity of free electrons in metals to achieve heat transfer; specifically, metal-based thermal conductive materials can be copper foil, aluminum foil, etc.

[0067] With the above settings, the material of the first sub-layer 211 can be flexibly selected according to the heat exchange requirements, which not only improves the adaptability of the deformable component 210, but also further optimizes the overall thermal management capability of the battery device 20.

[0068] Based on some embodiments in this application, please refer to Figure 5 and Figure 6 The multiple structural layers also include a second sub-layer 212, which is attached to the inside of the first sub-layer 211. The second sub-layer 212 is constructed as the middle layer structure of the deformable element 210 and is used to bear expansion and contraction loads.

[0069] In the embodiments of this application, the second sub-layer 212 serves as the middle layer structure of the deformable component 210, primarily bearing the loads generated during expansion and contraction. The material selection for the first sub-layer 211 must possess good flexibility and mechanical strength to prevent fracture or fatigue damage during frequent deformation. For example, the second sub-layer 212 can be made of polymer elastomers or fiber-reinforced composite materials, which can not only withstand large tensile and compressive stresses but also maintain stable performance during long-term use. Furthermore, the thickness of the second sub-layer 212 can be designed according to heat transfer requirements, comprehensively considering the balance between load-bearing capacity and thermal resistance, minimizing obstruction to heat transfer while meeting mechanical performance requirements.

[0070] In the embodiments of this application, the second sub-layer 212 is attached to the inner side of the first sub-layer 211. The second sub-layer 212 and the first sub-layer 211 can be composited in various ways, such as by hot pressing, bonding or extrusion to tightly bond the structural layers together, so as to reduce the probability of delamination or peeling of the flexible wall during expansion and contraction.

[0071] With the above configuration, the second sub-layer 212 plays a supporting role in the structure of the deformable component 210, which can maintain the stability of the flexible wall during the expansion and contraction process, and provide a reliable backing for the first sub-layer 211, thereby further improving the durability and heat exchange efficiency of the deformable component 210.

[0072] Based on some embodiments in this application, please refer to Figure 5 and Figure 6 The second sublayer 212 is any one of polyurethane-based material, rubber-based material, or composite membrane airtight membrane.

[0073] In the embodiments of this application, polyurethane-based materials refer to polymeric materials formed by the reaction of polyhydroxy compounds containing active hydrogen and polyisocyanates, characterized by urethane bonds as structural units; specifically, polyurethane-based materials can be thermoplastic polyurethane. Rubber-based materials refer to polymeric materials characterized by high elasticity, possessing a three-dimensional network structure formed by chemical cross-linking; specifically, rubber-based materials can be butyl rubber or halogenated butyl rubber, etc. Composite membrane airtight membranes refer to layered materials formed by the composite of two or more functional films of different materials through co-extrusion, lamination, or coating processes.

[0074] With the above settings, the material of the second sub-layer 212 can be flexibly selected according to the heat exchange requirements, which not only improves the adaptability of the deformable component 210, but also further optimizes the overall thermal management capability of the battery device 20.

[0075] Based on some embodiments in this application, please refer to Figure 5 and Figure 6 The multiple structural layers also include a third sub-layer 213, which is attached to the inside of the second sub-layer 212. The third sub-layer 213 is constructed as the inner layer structure of the deformable element 210 and is used to enhance the disturbance of the heat exchange medium.

[0076] In the embodiments of this application, the third sub-layer 213 serves as the inner layer structure of the deformable element 210, used to enhance the flow disturbance of the heat exchange medium in the inner cavity 201. The material selection of the third sub-layer 213 needs to have a certain roughness or special texture structure to promote the formation of turbulence in the heat exchange medium during flow, increasing the contact frequency and area between the heat exchange medium and the flexible wall; for example, the third sub-layer 213 can be made of a polymer material with a microstructure on the surface. The microstructure can generate a local eddy effect when the heat exchange medium flows, further optimizing the heat transfer performance. In addition, the thickness design of the third sub-layer 213 needs to balance the disturbance effect and overall flexibility, reducing the impact on the expansion and contraction of the deformable element 210 while achieving efficient heat exchange.

[0077] In the embodiments of this application, the third sub-layer 213 is attached to the inner side of the second sub-layer 212. The third sub-layer 213 and the second sub-layer 212 can be composited in various ways, such as by hot pressing, bonding or extrusion to tightly bond the structural layers together, so as to reduce the probability of delamination or peeling of the flexible wall during expansion and contraction.

[0078] Through the above configuration, the third sub-layer 213 enhances the flow of the heat exchange medium in the inner cavity 201, improves the heat exchange capacity of the deformable element 210, and enables the battery device 20 to adjust the temperature more quickly and evenly.

[0079] Based on some embodiments in this application, please refer to Figure 5 and Figure 6 The third sublayer 213 is any one of the following materials having a porous structure, a fiber-filled structure, or a microchannel structure.

[0080] In the embodiments of this application, the material with a porous structure can be foam metal, foam ceramic or open-cell foam polymer material, the material with a fiber-filled structure can be fiber felt, and the material with a microchannel structure can be ceramic.

[0081] With the above settings, the material of the third sub-layer 213 can be flexibly selected according to the heat exchange requirements, which not only improves the adaptability of the deformable part 210, but also further optimizes the overall thermal management capability of the battery device 20.

[0082] Based on some embodiments in this application, please refer to Figure 3 The deformable component 210 also includes two connectors 202, which are respectively located at both ends of the inner cavity 201 and are both rigid structures. Each connector 202 has a first end away from the inner cavity 201 and a second end close to the inner cavity 201. The first end of one connector 202 is configured as a heat exchange inlet 201a, and the first end of the other connector 202 is configured as a heat exchange outlet 201b.

[0083] In the embodiments of this application, the connector 202 adopts a rigid structure, which can effectively avoid interface loosening or leakage caused by the expansion or contraction of the deformable component 210. The connector 202 can be made of metal or high-strength plastic to ensure that it has sufficient mechanical strength and durability during use.

[0084] In the embodiments of this application, the first end of the connector 202 serves as the inlet and outlet of the heat exchange medium. Its shape and size can be adjusted according to actual needs to adapt to different feeding mechanisms or pipeline connection methods. For example, the first end of the connector 202 can be designed as a threaded interface, flange interface, or other standardized connection form to facilitate installation and maintenance. The portion of the second end of the connector 202 near the inner cavity 201 is tightly bonded to the flexible wall through a special process to ensure good airtightness and durability under complex working conditions such as high temperature and high pressure.

[0085] Through the above configuration, the connector 202 not only optimizes the flow path of the heat exchange medium but also further enhances the overall performance of the deformable element 210, enabling it to have higher stability and adaptability in various application scenarios. For some embodiments of this application, please refer to... Figure 3 The flow area of ​​the first end of any connector 202 is smaller than the flow area of ​​its second end.

[0086] In the embodiments of this application, the first end of the connector 202 has a smaller flow area, which can effectively increase the flow velocity of the heat exchange medium, thereby enhancing its flow disturbance effect in the inner cavity 201; the second end of the connector 202 has a larger flow area, which can reduce the resistance when the fluid enters or exits the inner cavity 201 and reduce pressure loss. In addition, by adjusting the ratio of the flow area of ​​the first end and the second end of the connector 202, different heat exchange requirements and operating conditions can be flexibly adapted to, further optimizing the thermal management performance of the battery device 20.

[0087] The above settings not only improve the flow efficiency of the heat exchange medium in the inner cavity 201, but also reduce the energy loss caused by fluid resistance, effectively avoiding local overheating or insufficient cooling caused by excessively fast or slow flow rates.

[0088] Based on some embodiments in this application, please refer to Figure 3 The heat exchange inlet 201a and the heat exchange outlet 201b are located at opposite ends of the inner cavity 201 along the first direction.

[0089] It should be noted that the first direction is Figure 3 The X direction shown is the thickness direction of the battery cell 22.

[0090] In the embodiments of this application, the heat exchange inlet 201a and the heat exchange outlet 201b are located at opposite ends of the inner cavity 201 along the first direction. The size and shape of the heat exchange inlet 201a and the heat exchange outlet 201b can be designed according to actual needs. For example, the heat exchange inlet 201a can be set to a larger diameter to accelerate the input speed of the heat exchange medium; the heat exchange outlet 201b can be set to a smaller diameter to increase the pressure in the inner cavity 201, thereby promoting the contact frequency and area between the heat exchange medium and the flexible wall.

[0091] With the above configuration, since the heat exchange inlet 201a and the heat exchange outlet 201b are located at opposite ends of the inner cavity 201 along the first direction, the flow path of the heat exchange medium is extended, which enables the heat exchange medium to form a more uniform flow field distribution in the inner cavity 201, further improving the heat exchange efficiency.

[0092] Based on some embodiments in this application, please refer to Figure 3The deformable element 210 is disposed on at least one side of the battery pack 100 along the second direction, which intersects with the first direction.

[0093] It should be noted that the second direction is Figure 3 The Y direction shown is the length direction of the battery cell 22. The deformation member 210 is disposed on at least one side of the battery pack 100 along the second direction, that is: the deformation member 210 is disposed along the length direction of the battery pack 100. Figure 3 The Y-direction shown is on one side or opposite sides.

[0094] In the embodiments of this application, the flexible wall of the deformable member 210 can be in direct contact with the battery pack 100. A thermally conductive pad or other auxiliary material can also be provided between the flexible wall of the deformable member 210 and the battery pack 100 to eliminate contact thermal resistance caused by uneven surface and reduce the risk of displacement caused by vibration or external impact.

[0095] With the above settings, the position of the deformable component 210 can be flexibly adjusted according to the actual use scenario. The deformable component 210 can not only effectively absorb external impact force, but also provide additional support when the battery pack 100 is subjected to lateral compression. The multi-layer structure design of the flexible wall gives it good elastic recovery ability when subjected to pressure, thereby reducing the risk of damage caused by collision or vibration.

[0096] Based on some embodiments in this application, please refer to Figure 3 The battery pack 100 is provided with deformable elements 210 on opposite sides along the second direction; the heat exchange assembly 200 also includes a first pipeline 220, which is used to supply heat exchange medium to the heat exchange inlet 201a of all deformable elements 210; the first pipeline 220 has multiple first interfaces, each of which is connected to the corresponding heat exchange inlet 201a.

[0097] Understandably, the battery pack 100... Figure 3 Deformation elements 210 are provided on opposite sides of the Y direction shown. The heat exchange inlets 201a of all deformation elements 210 are connected to the same first pipeline 220, and the heat exchange medium is input to all heat exchange inlets 201a through the first pipeline 220.

[0098] In the embodiments of this application, the first pipeline 220, as a component for transporting the heat exchange medium, can adopt various structural forms. For example, the first pipeline 220 has a main input pipeline and branch input pipelines connected to the main input pipeline. Each branch input pipeline is provided with a first interface. The heat exchange medium is transported to each branch input pipeline through the main input pipeline, and then the heat exchange medium is evenly distributed to the heat exchange inlet 201a of each deformable component 210 by the branch input pipelines.

[0099] In the embodiments of this application, each first interface is connected to the corresponding heat exchange inlet 201a, and the connection method between the two needs to have good sealing performance and reliability. For example, the first interface and the heat exchange inlet 201a can be connected by a quick connector or thread, and a sealing ring or gasket can be provided at the connection to improve the stability of the connection. The material of the first pipeline 220 needs to comprehensively consider factors such as corrosion resistance, high temperature resistance, and mechanical strength. For example, the first pipeline 220 can be made of stainless steel, high temperature resistant plastic, or composite materials to meet the usage requirements under different working conditions.

[0100] Through the above configuration, the first pipeline 220 not only achieves efficient transportation and uniform distribution of the heat exchange medium, but also improves the reliability and maintenance convenience of the entire heat exchange assembly 200.

[0101] Based on some embodiments in this application, please refer to Figure 3 The heat exchange assembly 200 also includes a second pipe 230, which is used to output the heat exchange medium discharged from the heat exchange outlet 201b of all deformable parts 210; the second pipe 230 has multiple second interfaces, each of which is connected to the corresponding heat exchange outlet 201b.

[0102] It is understandable that all the heat exchange outlets 201b of the deformable parts 210 are connected to the same second pipe 230, through which the heat exchange medium discharged from all the heat exchange outlets 201b is output.

[0103] In the embodiments of this application, the second pipeline 230, as a component for transporting the heat exchange medium, can adopt various structural forms. For example, the second pipeline 230 includes a main output pipeline and branch output pipelines connected to the main output pipeline. Each branch output pipeline is provided with a second interface, through which the heat exchange medium discharged from the heat exchange outlet 201b of the corresponding deformable component 210 is received, transported to each branch output pipeline, and collected into the main output pipeline for unified discharge or recycling.

[0104] In the embodiments of this application, each second interface is connected to the corresponding heat exchange outlet 201b, and the connection method between the two needs to have good sealing performance and reliability. For example, the second interface and the heat exchange outlet 201b can be connected by a quick connector or thread, and a sealing ring or gasket can be provided at the connection to improve the stability of the connection. The material of the second pipeline 230 needs to comprehensively consider factors such as corrosion resistance, high temperature resistance, and mechanical strength. For example, the second pipeline 230 can be made of stainless steel, high temperature resistant plastic, or composite materials to meet the usage requirements under different working conditions.

[0105] With the above configuration, the second pipeline 230 can not only efficiently collect and discharge the heat exchange medium, but also provide stable support for thermal management, thereby optimizing the operating efficiency and service life of the battery device 20.

[0106] Based on some embodiments in this application, please refer to Figure 3 and Figure 7 The heat exchange assembly 200 also includes a first regulating member 240, which is located at the heat exchange inlet 201a and is used to regulate the input amount of the heat exchange medium.

[0107] It is understandable that the input amount of the heat exchange medium is adjusted by using the first regulating element 240 to adjust the degree of expansion of the deformable element 210, thereby adapting to different heat exchange requirements.

[0108] In the embodiments of this application, the first regulating member 240 is a component used to regulate the input amount of the heat exchange medium. The first regulating member 240 can adopt various structural forms, such as a manual regulating valve, an electric regulating valve, a pneumatic regulating valve, a throttle, or other flow regulating device. The connection between the first regulating member 240 and the first interface needs to maintain a tight seal. For example, a sealing ring or a sealing gasket is provided at the connection between the first regulating member 240 and the first interface.

[0109] With the above settings, the first adjustment member 240 can adjust the input amount of the heat exchange medium to adjust the expansion degree of the deformation member 210, thereby enhancing the adaptability and practicality of the heat exchange assembly 200 and enabling the battery device 20 to flexibly adjust its thermal management performance under different operating conditions.

[0110] Based on some embodiments in this application, please refer to Figure 3 The heat exchange assembly 200 also includes a second regulating element, which is located at the heat exchange outlet 201b and is used to regulate the output of the heat exchange medium.

[0111] It is understandable that the output of the heat exchange medium is adjusted by the second regulating element in order to further control the degree of contraction of the deformable element 210, thereby adapting to different heat exchange requirements.

[0112] In the embodiments of this application, the second regulating component is a part used to regulate the output of the heat exchange medium. The second regulating component can adopt various structural forms. For example, the second regulating component can be a flow regulating device such as a manual throttle valve, an electric proportional valve, a pneumatic control valve, or a throttle. The connection between the second regulating component and the second interface needs to maintain a tight seal. For example, a sealing ring or a sealing gasket is provided at the connection between the second regulating component and the second interface.

[0113] With the above settings, the second adjustment component can adjust the output of the heat exchange medium to adjust the degree of contraction of the deformation component 210, thereby enhancing the adaptability and practicality of the heat exchange assembly 200 and enabling the battery device 20 to flexibly adjust its thermal management performance under different operating conditions.

[0114] Please refer to Figure 1 and Figure 2 One embodiment of the electrical device includes the battery device 20 described above.

[0115] The aforementioned electrical equipment includes a heat exchange component 200 comprising a deformable element 210. When the inner cavity 201 of the deformable element 210 is filled with a heat exchange medium, it expands and deforms, and the flexible wall adheres to the surface of the battery cell 22 and exchanges heat, significantly increasing the effective heat exchange area between the deformable element 210 and the battery cell 22. This is beneficial for improving the heat exchange efficiency and uniformity of the battery cell 22 and improving the uneven heat exchange caused by poor contact in traditional rigid heat exchange structures. By adjusting the input and output of the heat exchange medium, the degree of expansion of the deformable element 210 can be flexibly controlled to match the heat exchange requirements under different operating conditions, so that the battery device 20 can maintain stable performance under various environmental conditions.

[0116] According to some embodiments in this application, see Figures 3 to 7 In one embodiment, the battery device 20 includes a battery pack 100 and a heat exchange assembly 200. The heat exchange assembly 200 includes a deformable element 210, a first pipe 220, a second pipe 230, and a first adjusting element 240. The battery pack 100 includes at least two battery cells 22 arranged side by side along a first direction. Deformable elements 210 are respectively provided on opposite sides of the battery pack 100 along a second direction, which intersects with the first direction. The deformable element 210 has a flexible wall that encloses an inner cavity 201 and a heat exchange inlet 201a and a heat exchange outlet 201b connected to the inner cavity 201. The heat exchange inlet 201a is used to input a heat exchange medium into the inner cavity 201, and the heat exchange outlet 201b is used to output the heat exchange medium discharged from the inner cavity 201. The flexible wall is configured to expand and deform when the inner cavity 201 is filled with a heat exchange medium. The flexible wall is in contact with the surface of the adjacent battery cell 22 and performs heat exchange. The first pipeline 220 is used to supply heat exchange medium to the heat exchange inlets 201a of all deformable components 210. The first pipeline 220 has multiple first ports, each connected to a corresponding heat exchange inlet 201a. A first regulating element 240 is disposed at the heat exchange inlet 201a and used to regulate the input amount of the heat exchange medium. The second pipeline 230 is used to output the heat exchange medium discharged from the heat exchange outlets 201b of all deformable components 210. The second pipeline 230 has multiple second ports, each connected to a corresponding heat exchange outlet 201b.

[0117] The flexible wall includes a first sub-layer 211, a second sub-layer 212, and a third sub-layer 213. The first sub-layer 211 is configured as the outer layer structure of the deformable element 210 and is used to contact the surface of the battery cell 22. The second sub-layer 212 is configured as the middle layer structure of the deformable element 210 and is used to withstand expansion and contraction loads. The third sub-layer 213 is configured as the inner layer structure of the deformable element 210 and is used to enhance the disturbance of the heat exchange medium.

[0118] According to some embodiments in this application, see Figures 1 to 2 In one embodiment, the electrical device includes the battery device 20 described above.

[0119] 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 (20) characterized by, include: The battery pack (100) includes at least two battery cells (22) arranged side by side along a first direction. Heat exchange assembly (200) includes deformable element (210); The deformable element (210) has a flexible wall that encloses an inner cavity (201). The deformable element (210) also has a heat exchange inlet (201a) and a heat exchange outlet (201b) connected to the inner cavity (201). The heat exchange inlet (201a) is used to input a heat exchange medium into the inner cavity (201), and the heat exchange outlet (201b) is used to output the heat exchange medium discharged from the inner cavity (201). The flexible wall is configured to expand and deform when the inner cavity (201) is filled with a heat exchange medium. The flexible wall is attached to the surface of the adjacent battery cell (22) and exchanges heat. The deformable component (210) further includes two connectors (202), which are respectively disposed at both ends of the inner cavity (201); each connector (202) has a first end away from the inner cavity (201) and a second end close to the inner cavity (201), the first end of one connector (202) is configured as the heat exchange inlet (201a), and the first end of the other connector (202) is configured as the heat exchange outlet (201b); the flow area of ​​the first end of any connector (202) is smaller than the flow area of ​​its second end.

2. The battery device (20) according to claim 1, characterized in that The flexible wall comprises multiple structural layers, all of which are stacked along the thickness direction and combined into a whole.

3. The battery arrangement (20) according to claim 2, characterized in that The plurality of structural layers include a first sublayer (211) which is configured as an outer structure of the deformable element (210) and is used to contact the surface of the battery cell (22).

4. The battery arrangement (20) according to claim 3, characterized in that The first sublayer (211) is any one of organosilicon-based thermal conductive material, carbon-based thermal conductive material, and metal-based thermal conductive material.

5. The battery arrangement (20) according to claim 3, characterized in that The plurality of structural layers also include a second sublayer (212) which is attached to the inside of the first sublayer (211) and is configured as the middle layer structure of the deformable member (210) and is used to withstand expansion and contraction loads.

6. The battery arrangement (20) according to claim 5, characterized in that The second sublayer (212) is any one of polyurethane-based material, rubber-based material, or composite membrane airtight membrane.

7. The battery device (20) according to claim 5, characterized in that The plurality of structural layers also include a third sublayer (213) which is attached to the inside of the second sublayer (212). The third sublayer (213) is configured as the inner layer structure of the deformable element (210) and is used to enhance the disturbance of the heat exchange medium.

8. The battery device (20) according to claim 7, characterized in that The third sublayer (213) is any one of the following materials: porous structure, fiber-filled structure or microchannel structure.

9. The battery device (20) according to claim 1, characterized in that Both of the connectors (202) are rigid structures.

10. The battery device (20) according to claim 1, characterized in that The heat exchange inlet (201a) and the heat exchange outlet (201b) are located at opposite ends of the inner cavity (201) along the first direction.

11. The battery device (20) according to claim 1, characterized in that The deformable element (210) is disposed on at least one side of the battery pack (100) along a second direction, which intersects the first direction.

12. The battery device (20) according to claim 11, characterized in that The battery pack (100) is provided with the deformation element (210) on both opposite sides along the second direction. The heat exchange assembly (200) further includes a first pipeline (220) for supplying heat exchange medium to the heat exchange inlets (201a) of all the deformable parts (210); the first pipeline (220) has a plurality of first interfaces, each of which is connected to the corresponding heat exchange inlet (201a).

13. The battery device (20) according to claim 12, characterized in that The heat exchange assembly (200) further includes a second pipe (230) for discharging the heat exchange medium discharged from the heat exchange outlet (201b) of all the deformable parts (210); The second pipeline (230) has a plurality of second ports, each of which is connected to the corresponding heat exchange outlet (201b).

14. The battery device (20) according to claim 1, characterized in that The heat exchange assembly (200) further includes a first regulating element (240), which is located at the heat exchange inlet (201a) and is used to regulate the input amount of the heat exchange medium.

15. The battery device (20) of claim 1, wherein, The heat exchange assembly (200) further includes a second regulating element, which is located at the heat exchange outlet (201b) and is used to regulate the output of the heat exchange medium.

16. An electrical device, characterized by Includes the battery device (20) as described in any one of claims 1-15.

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