Battery device and electric device
By employing a multi-layered heat exchange core and functional layer design in the heat exchange structure, the problem of easy damage to the heat exchange structure in complex environments is solved, the heat dissipation efficiency and charge/discharge performance of the battery device are improved, and the service life is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-06-23
AI Technical Summary
Existing heat exchange structures are easily damaged in complex environments, affecting the heat dissipation and charge/discharge performance of battery devices. They are also susceptible to fluid corrosion and high temperatures, resulting in a short service life.
It adopts a multi-layer structure consisting of a heat exchange core and a functional layer. The inner and outer surfaces of the heat exchange core are covered with the functional layer. The materials can be flexibly selected to adapt to different environmental requirements, thereby enhancing the structural strength and corrosion resistance.
It improves the structural strength and service life of heat exchange components, enhances the charging and discharging performance of battery devices, and extends the service life of thermal management components.
Smart Images
Figure CN224400414U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology
[0002] Batteries typically incorporate heat exchange structures to dissipate heat from individual cells and to heat them up. However, the working environment of these heat exchange structures is complex. The interior of the structure is in direct contact with fluids, subject to fluid pressure and corrosion. The exterior of the structure exchanges heat with the individual cells and is affected by the high-temperature environment. Furthermore, the functions of heat exchange structures in related technologies are relatively limited, making them susceptible to damage. This not only reduces the lifespan of the heat exchange structure but also affects the heat exchange with the individual cells, thereby impacting the charging and discharging performance of the battery device. Utility Model Content
[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide a battery device and an electrical device including the battery device, wherein the heat exchange component of the battery device can integrate multiple performance characteristics, can better overcome pressure and corrosion from fluids, can also improve structural strength, and is not prone to deformation or damage in high-temperature environments, thereby enabling the thermal management component to have a longer service life and improving the charging and discharging performance of the battery device.
[0004] According to a first aspect embodiment of the present application, the battery device includes: a housing, a battery cell, and a thermal management component. The battery cell is installed in the housing, and the thermal management component is disposed in the housing. The thermal management component is used to contain fluid to regulate the temperature of the battery cell. The thermal management component includes: a current collector and a heat exchanger. The current collector is snapped onto the end of the heat exchanger and communicates with the heat exchanger. The heat exchanger includes: a heat exchange core and a functional layer. The heat exchange core has multiple heat exchange channels, and at least a portion of the outer surface of the heat exchange core is covered by the functional layer.
[0005] In the above example, by making the heat exchanger include a heat exchange core and a functional layer covering the outer surface of the heat exchange core, the heat exchanger can have better structural strength. The heat exchange core and the functional layer are the inner and outer layers of the heat exchanger. Different materials can be selected to construct the two layers according to actual needs, so that the heat exchanger can integrate multiple performances, better overcome the pressure and corrosion from the fluid, and also improve the structural strength. This results in a longer service life for the thermal management component and is beneficial to improving the charging and discharging performance of the battery device.
[0006] In some embodiments of this application, the functional layer is provided with at least one layer, wherein when the functional layer is provided with multiple layers, the multiple functional layers are stacked sequentially.
[0007] In the above example, by setting at least one functional layer, the number of functional layers can be set according to actual needs, so that functional layers with different performances can be selected more flexibly according to actual needs, thereby enabling the heat exchanger to have a variety of different performances, and thus better ensuring the heat exchange effect of the thermal management component on the battery cell.
[0008] In some embodiments of this application, the thermal management component further includes an adhesive layer disposed between the heat exchange core and the functional layer, and / or, the adhesive layer is disposed between two adjacent functional layers.
[0009] In the above example, by setting an adhesive layer, the connection strength between layers can be improved, enabling structural components with different properties to be connected. The connection method is simple and can improve the overall performance of the heat exchanger.
[0010] In some embodiments of this application, the functional layer is integrally formed on the outer surface of the heat exchange core.
[0011] In the example above, the functional layer is integrally molded and covers the outer surface of the heat exchange core, which can improve the structural strength of the heat exchange component, effectively resist external impact and vibration, extend the service life of the heat exchange component, simplify the manufacturing process, and reduce assembly difficulty and cost.
[0012] In some embodiments of this application, the functional layer includes a metal structural layer integrally extruded onto the outer periphery of the heat exchange core, and / or the functional layer includes a plastic structural layer injection molded onto the outer periphery of the heat exchange core.
[0013] In the above example, by including a metal structural layer or a plastic structural layer in the functional layer, the structural performance of the heat exchanger can be improved, which is beneficial to extending the service life of the heat exchanger.
[0014] In some embodiments of this application, the heat exchange core is a one-piece molded part.
[0015] In the above examples, one-piece molding simplifies the cumbersome assembly process, reduces human error in production, improves product consistency and yield, effectively shortens the manufacturing cycle, and reduces production costs. One-piece molding eliminates gaps that may occur at joints, reducing thermal resistance and leakage risks, making heat transfer more efficient and stable, and significantly improving heat exchange efficiency. One-piece molding also gives the heat exchange core greater structural strength, better resisting the effects of external forces such as vibration and pressure fluctuations, extending the service life of the heat exchange components, and ensuring long-term reliable operation under various working conditions.
[0016] In some embodiments of this application, the heat exchange core is an integrally extruded metal part, or the heat exchange core is an injection molded part.
[0017] In the above examples, by making the heat exchange core a one-piece extruded metal part, or by making the heat exchange core an injection molded part, the stability of the heat exchange core can be improved, thereby increasing the service life of the heat exchange core.
[0018] In some embodiments of this application, the heat exchange core extends along a first direction, and the heat exchange core has a first plate surface and a second plate surface opposite to each other in a second direction. A plurality of partition ribs extending along the first direction are provided between the first plate surface and the second plate surface. The plurality of partition ribs are arranged at intervals along the second direction to form the heat exchange channel between two adjacent partition ribs.
[0019] In the above example, multiple partition ribs extending along the first direction and positioned between the opposing first and second plate surfaces can effectively guide the fluid. The heat exchange channels constructed by the spaced partition ribs effectively increase the contact area between the fluid and the heat exchange core, allowing for more efficient heat transfer and significantly improving heat exchange efficiency. Furthermore, the partition ribs can effectively enhance the structural strength of the heat exchange core in both the first and second directions, enabling the heat exchange core to better withstand internal fluid pressure and external vibration and impact.
[0020] In some embodiments of this application, the first plate surface and the second plate surface are parallel, and the included angle between the partition rib and the first plate surface and the second plate surface is an acute angle.
[0021] In the above example, by ensuring that the angles between the partition ribs and the first and second plate surfaces are all acute angles, the flow trajectory of the fluid within the heat exchange channel can be effectively altered, creating turbulence and preventing laminar flow. This increases the mixing degree within the fluid, further improving heat transfer efficiency. Furthermore, the acute angle arrangement allows for a greater number of partition ribs to be installed within a limited space, increasing the contact area between the fluid and the heat exchange core without increasing the overall volume, thus improving space utilization. Simultaneously, this structure can reduce the weight of the heat exchange core to some extent, lowering material costs. Moreover, the acute angle design allows for more rational force transmission, enhancing the heat exchange core's ability to resist internal fluid pressure and ensuring stable operation of the equipment under high-pressure conditions.
[0022] An electrical device according to a second aspect of this application includes the battery device of the above-described embodiments, the battery device being used to store or provide electrical energy.
[0023] In the above technical solution, by setting the battery device, the battery device has better charging and discharging performance, thereby enabling the power device equipped with the battery device to have better performance.
[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0026] Figure 1 A schematic diagram of a vehicle provided for some embodiments of this application.
[0027] Figure 2 This is an exploded view of a battery device according to some embodiments of this application.
[0028] Figure 3 This is a schematic diagram of the structure of a thermal management component according to some embodiments of this application.
[0029] Figure 4 This is a cross-sectional view of a heat exchanger according to some embodiments of this application.
[0030] Figure 5 for Figure 4 A magnified view of region A in the middle.
[0031] Figure label:
[0032] 1000, Vehicle; 100, Battery unit; 200, Controller; 300, Motor;
[0033] 1. Housing; 2. Battery cell; 3. Thermal management components; 31. Current collector; 32. Heat exchanger; 321. Heat exchange core; 322. Functional layer; 41. Heat exchange channel; 51. First plate; 52. Second plate; 53. Separating rib; 61. Outer layer; 62. Middle layer. Detailed Implementation
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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.
[0039] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).
[0040] 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," "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.
[0041] 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.
[0042] 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 one or more battery cells, and when there are multiple battery cells, they are connected in series, parallel, or mixed connections via a busbar.
[0043] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.
[0044] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.
[0045] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.
[0046] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.
[0047] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.
[0048] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.
[0049] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.
[0050] In some embodiments, the battery device refers to an energy storage device, which includes a housing with a door on at least one side. Energy storage devices include energy storage containers, energy storage cabinets, etc.
[0051] The battery cells mentioned in the embodiments of this application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. Battery cells may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these shapes either. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these types either.
[0052] For example, a single battery cell typically includes a housing, a cell assembly, and an electrolyte. The housing is used to house the cell assembly and the electrolyte, and the housing has at least one positive electrode post and at least one negative electrode post. The cell assembly includes one or more electrode assemblies, which are formed by stacking or winding positive electrode sheets, negative electrode sheets, and separators.
[0053] The positive electrode generally includes a positive current collector and a positive active material layer. The positive active material layer is directly or indirectly coated on the positive current collector. The positive current collector without the positive active material layer protrudes from the positive current collector with the positive active material layer. The positive current collector without the positive active material layer serves as a positive electrode tab. Multiple positive electrode tabs are stacked together and form an electrical connection with the positive electrode post. For example, the multiple stacked positive electrode tabs can be directly soldered to the positive electrode post to form an electrical connection; or, the battery cell assembly can also include a positive electrode adapter piece. The multiple stacked positive electrode tabs are soldered to one end of the positive electrode adapter piece, and the other end of the positive electrode adapter piece is soldered to the positive electrode post, so that the positive electrode tabs and the positive electrode post form an electrical connection.
[0054] The negative electrode generally includes a negative current collector and a negative active material layer. The negative active material layer is directly or indirectly coated on the negative current collector. The negative current collector without the negative active material layer protrudes from the negative current collector with the negative active material layer. The negative current collector without the negative active material layer serves as a negative electrode tab. Multiple negative electrode tabs are stacked together and form an electrical connection with the negative electrode post. For example, the stacked negative electrode tabs can be directly welded to the negative electrode post to form an electrical connection; alternatively, the battery cell assembly may also include a negative electrode adapter piece. The stacked negative electrode tabs are welded to one end of the negative electrode adapter piece, and the other end of the negative electrode adapter piece is welded to the negative electrode post, so that the negative electrode tabs and the negative electrode post form an electrical connection. The material of the separator is not limited; for example, it can be polypropylene or polyethylene.
[0055] Meanwhile, individual battery cells primarily function by the movement of metal ions between the positive and negative electrode plates. Taking lithium-ion batteries as an example, the positive electrode current collector can be made of aluminum, and the positive electrode active material layer can be made of lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode current collector can be made of copper, and the negative electrode active material layer can be made of carbon or silicon, etc. During charging and discharging, Li+ ions repeatedly insert and extract between the two electrodes: during charging, Li+ ions extract from the positive electrode, pass through the electrolyte, and insert into the negative electrode, leaving the negative electrode in a lithium-rich state; the reverse occurs during discharging.
[0056] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells and battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.
[0057] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.
[0058] It is understandable that the temperature environment inside a battery is affected by external weather conditions. The individual battery cells need to operate within a certain temperature range. When the internal temperature exceeds or falls below this range, the battery's stability and performance will be significantly affected. For example, in hot weather, the battery needs to cool down the individual cells to maintain the required internal temperature; in cold weather, the battery needs to heat up the individual cells to keep the internal temperature within the necessary range.
[0059] Batteries typically incorporate heat exchange structures to dissipate heat from individual cells and to heat them up. However, the working environment of these heat exchange structures is complex. The interior of the structure is in direct contact with fluids, subject to fluid pressure and corrosion. The exterior of the structure exchanges heat with the individual cells and is affected by the high-temperature environment. Furthermore, the functions of heat exchange structures in related technologies are relatively limited, making them susceptible to damage. This not only reduces the lifespan of the heat exchange structure but also affects the heat exchange with the individual cells, thereby impacting the charging and discharging performance of the battery device.
[0060] Based on the above considerations, in order to solve the aforementioned technical problems, this application proposes a battery device. In the battery device, by making the heat exchange component include a heat exchange core and a functional layer covering the outer surface of the heat exchange core, the heat exchange component can have better structural strength. The heat exchange core and the functional layer are the inner and outer layers of the heat exchange component. Different materials can be selected to construct the two layers according to actual needs, so that the heat exchange component can integrate multiple performances, better overcome the pressure and corrosion from the fluid, and also improve the structural strength. This results in a longer service life for the thermal management component and is beneficial to improving the charge and discharge performance of the battery device.
[0061] The heat exchanger disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.
[0062] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.
[0063] Reference Figure 1 , Figure 1 This is a schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery is installed inside the vehicle 1000, and the battery can be located at the bottom, front, or rear of the vehicle 1000. The battery can be used to power the vehicle 1000; for example, the battery can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.
[0064] In some embodiments of this application, the battery can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
[0065] The following is for reference. Figures 2-5 A battery device 100 according to a first aspect embodiment of this application is described.
[0066] Please refer to Figures 2-5 , Figure 2 This is an exploded view of a battery device 100 according to some embodiments of this application. Figure 3 This is a schematic diagram of the structure of the thermal management component 3 in some embodiments of this application. Figure 4 This is a cross-sectional view of the heat exchanger 32 in some embodiments of this application. Figure 5 for Figure 4 A magnified view of region A in the middle.
[0067] This application provides a battery device 100, such as... Figures 2-5 As shown, the battery device 100 includes a housing 1, a battery cell 2, and a thermal management component 3. The battery cell 2 is installed inside the housing 1, and the thermal management component 3 is disposed inside the housing 1. The thermal management component 3 is used to contain fluid to regulate the temperature of the battery cell 2. The thermal management component 3 includes a current collector 31 and a heat exchanger 32. The current collector 31 is snapped onto the end of the heat exchanger 32 and communicates with the heat exchanger 32. The heat exchanger 32 includes a heat exchange core 321 and a functional layer 322. The heat exchange core 321 has multiple heat exchange channels 41, and at least a portion of the outer surface of the heat exchange core 321 is covered with the functional layer 322.
[0068] In other words, during the charging or discharging process of battery cell 2, thermal management component 3 can regulate the temperature of battery cell 2. For example, when battery cell 2 generates high temperature, thermal management component 3 can cool down battery cell 2 to keep the internal temperature of the battery within the required temperature range. Specifically, fluid can enter the heat exchange channel 41 of heat exchange component 32 from current collector 31, and then the fluid channel heat exchange component 32 exchanges heat with battery cell 2. The current collector 31 can better distribute the fluid, so that the fluid can better enter multiple heat exchange channels 41.
[0069] During the heat exchange process between the fluid and the battery cell 2, the fluid flows through the heat exchange channel 41, which fills the heat exchange channel 41 with pressure. The fluid is in direct contact with the heat exchange component 32, which can easily cause corrosion to the heat exchange component 32. Furthermore, when the battery cell 2 generates high temperature, the battery cell 2 is still in contact with the heat exchange component 32, which is easily damaged by high temperature. The heat exchange structure in related technologies is made of relatively simple materials and is often a single-layer structure. For example, if the heat exchange structure is made of metal, although it is not easily damaged at high temperature, the metal material is easily corroded by direct contact with the fluid. If the heat exchange component is made of plastic, although it is not easily corroded by the fluid, it is easily damaged under the influence of the high temperature of the battery cell.
[0070] Based on this, this application proposes a heat exchanger 32, which not only has good structural strength but is also not easily corroded by fluids or damaged by the high temperature of the battery cell 2. Specifically, the heat exchanger 32 includes a heat exchange core 321 and a functional layer 322. The heat exchange core 321 has multiple heat exchange channels 41, in which fluid can flow and exchange heat with the battery cell 2. Furthermore, at least a portion of the outer surface of the heat exchange core 321 is covered with the functional layer 322.
[0071] For example, the functional layer 322 can be made of different materials according to actual needs, so that the surface of the heat exchanger 32 has different material properties. For example, the functional layer 322 can be made of a high-temperature resistant material, which can reduce the damage to the heat exchanger 32 when the battery cell 2 generates high temperature; for example, the functional layer 322 can be made of a high-structural-strength material, thereby improving the structural strength of the heat exchanger 32. It can be understood that the functional layer 322 can simultaneously possess both high-temperature resistance and high structural strength. That is, the functional layer 322 can be made to have different properties according to the actual needs of the heat exchanger 32, thereby improving the flexibility of the heat exchanger 32 and enabling it to be applied to a variety of different working environments.
[0072] For example, the functional layer 322 and the heat exchange core 321 can be made of different materials. For instance, the heat exchange core 321 can be integrally formed using a corrosion-resistant material, thus preventing corrosion when the heat exchange core 321 comes into contact with the fluid. The functional layer 322 can be constructed using a metallic material, which can improve the structural strength of the heat exchange component 32 and prevent deformation or damage at high temperatures. Furthermore, the functional layer 322 can also be made of a material with insulating properties. Thus, the heat exchange component 32 of this application can be constructed using different materials according to actual needs, resulting in different performance characteristics of the heat exchange component 32, which better matches actual needs and makes the heat exchange component 32 less prone to damage, thus extending the service life of the heat exchange component 32. This ensures the heat exchange of the thermal management component 3 to the battery cell 2 and improves the charging and discharging performance of the battery device 100.
[0073] For example, only a portion of the outer surface of the heat exchange core 321 is covered with a functional layer 322, which can improve the structural strength of the heat exchange core 321.
[0074] For example, the outer surface of all heat exchange cores 321 is covered with a functional layer 322, that is, the heat exchange cores 321 are wrapped in the functional layer 322.
[0075] For example, the heat exchange core 321 may be constructed from a high-temperature resistant, high-strength, corrosion-resistant, or insulating material.
[0076] For example, the functional layer 322 may be constructed of a material that is resistant to high temperature, high strength, corrosion, or insulation.
[0077] For example, the heat exchange core 321 and the functional layer 322 can be made of different materials, so that the inner layer and the outer layer 61 of the heat exchange element 32 have different functions. For example, the heat exchange core 321 of the inner layer can be constructed of a corrosion-resistant material, while the functional layer 322 of the outer layer 61 can be constructed of a high-temperature resistant, high-strength or insulating material. Even, the functional layer 322 can be constructed of a metal material, and then an insulating coating is applied to the outer surface of the metal material.
[0078] For example, the fluid can be water or other liquids used for heat exchange, and this application does not limit it.
[0079] For example, the housing 1 may include a bottom wall and a side wall, the heat exchanger 32 may be located between the bottom wall and the battery cell 2, and the heat exchanger 32 may also be located between the side wall and the battery cell 2, which is not limited in this application.
[0080] In the above example, by making the heat exchanger 32 include a heat exchange core 321 and a functional layer 322 covering the outer surface of the heat exchange core 321, the heat exchanger 32 can have better structural strength. The heat exchange core 321 and the functional layer 322 are the inner and outer layers of the heat exchanger 32. Different materials can be selected to construct the two layers according to actual needs, so that the heat exchanger 32 can integrate multiple performances, better overcome the pressure and corrosion from the fluid, and also improve the structural strength. This results in the thermal management component 3 having a longer service life and is conducive to improving the charging and discharging performance of the battery device 100.
[0081] In some embodiments of this application, the functional layer 322 is provided with at least one layer, wherein when the functional layer 322 is provided with multiple layers, the multiple functional layers 322 are stacked sequentially.
[0082] For example, the functional layer 322 is provided. For instance, the heat exchange core 321 is integrally molded from plastic material, and the functional layer 322 is integrally extruded from metal material. Thus, when the fluid flows through the heat exchange channel 41 of the heat exchange core 321, it is not easy to corrode the heat exchange core 321. The functional layer 322, which is made of metal material, can better improve the structural strength of the heat exchange component 32 and is not easy to deform in high temperature environments.
[0083] For example, when the functional layer 322 has multiple layers, the multiple functional layers 322 are stacked sequentially. For example, the multiple functional layers 322 include a high-temperature resistant layer, a high-strength layer, a corrosion-resistant layer, and an insulating layer. The specific arrangement of the relative positions between the layers can be determined according to actual needs, and this application does not impose any restrictions. Figure 5 As shown. The functional layer 322 has two layers, namely the outer layer 61 and the middle layer 62. The middle layer 62 can improve the structural strength and pressure resistance of the heat exchanger 32, while the outer layer 61 can be an insulating layer to ensure the insulation and pressure resistance of the heat exchanger 32.
[0084] In the above example, by setting at least one functional layer 322, the number of functional layers 322 can be set according to actual needs, so that functional layers 322 with different performances can be selected more flexibly according to actual needs, so that the heat exchanger 32 has a variety of different performances, thereby better ensuring the heat exchange effect of the thermal management component 3 on the battery cell 2.
[0085] In some embodiments of this application, the thermal management component 3 further includes an adhesive layer disposed between the heat exchange core 321 and the functional layer 322, and / or, the adhesive layer is disposed between two adjacent functional layers 322.
[0086] For example, an adhesive layer is disposed between the heat exchange core 321 and the functional layer 322.
[0087] For example, the adhesive layer is disposed between two adjacent functional layers 322.
[0088] For example, an adhesive layer is disposed between the heat exchange core 321 and the functional layer 322, and an adhesive layer is disposed between two adjacent functional layers 322.
[0089] Understandably, the adhesive layer can improve the connection strength between layers. For example, an adhesive layer is provided between the heat exchange core 321 and the functional layer 322. The adhesive layer is used to improve the structural strength between the heat exchange core 321 and the functional layer 322. When the heat exchange core 321 and the functional layer 322 are constructed with different materials, even if the heat exchange core 321 and the functional layer 322 are not easy to stick together when in direct contact due to the materials, the adhesive layer can still make the heat exchange core 321 and the functional layer 322 better connected. The connection method is simple and can improve the overall performance of the heat exchange component 32.
[0090] In the above example, by setting an adhesive layer, the connection strength between layers can be improved, enabling structural components with different properties to be connected. The connection method is simple and can improve the overall performance of the heat exchanger 32.
[0091] In some embodiments of this application, the functional layer 322 is integrally formed on the outer surface of the heat exchange core 321.
[0092] In other words, the functional layer 322, integrally molded, covers the outer surface of the heat exchange core 321, which improves the tightness of the connection between the functional layer 322 and the heat exchange core 321, enhances the robustness of the heat exchange component 32, effectively resists external impacts and vibrations, and extends the service life of the heat exchange component 32. Furthermore, in terms of heat exchange performance, the integrally molded structure simplifies the manufacturing process and reduces assembly difficulty and cost. In addition, the functional layer 322 provides protection for the heat exchange core 321, preventing it from being corroded or worn, thus facilitating stable heat exchange between the heat exchange component 32 and the battery cell 2.
[0093] In the above example, the functional layer 322 is integrally molded and covers the outer surface of the heat exchange core 321, which can improve the structural strength of the heat exchange component 32, effectively resist external impact and vibration, extend the service life of the heat exchange component 32, simplify the manufacturing process, and reduce assembly difficulty and cost.
[0094] In some embodiments of this application, the functional layer 322 includes a metal structural layer integrally extruded onto the outer periphery of the heat exchange core 321, and / or, the functional layer 322 includes a plastic structural layer injection molded onto the outer periphery of the heat exchange core 321.
[0095] For example, the functional layer 322 includes a metal structural layer, which is integrally extruded onto the outer periphery of the heat exchange core 321. Metal possesses excellent strength and thermal conductivity. The integral extrusion molding ensures a tight bond between the metal structural layer and the heat exchange core 321, effectively improving the structural strength of the heat exchange component 32. This helps the heat exchange component 32 withstand harsh operating conditions such as high temperature and high pressure, effectively protecting the heat exchange core 321 from external damage. Simultaneously, the good thermal conductivity allows heat to be transferred quickly and evenly between the heat exchange core 321 and the external environment, significantly enhancing heat exchange efficiency.
[0096] For example, the functional layer 322 includes a plastic structural layer that is injection molded onto the outer periphery of the heat exchange core 321. The lightweight nature of the plastic material reduces the overall weight of the equipment, facilitating installation and transportation. Furthermore, plastics generally possess good corrosion resistance, providing reliable protection for the heat exchange core 321 against chemical corrosion. The injection molding process allows for precise shaping of complex forms, ensuring a tight fit between the functional layer 322 and the heat exchange core 321, further enhancing the performance of the heat exchange component 32.
[0097] For example, the functional layer 322 includes at least two layers, which can be a metal structural layer and a plastic structural layer, respectively. The metal structural layer is integrally extruded and formed on the outer periphery of the heat exchange core 321.
[0098] In the above example, by making the functional layer 322 include a metal structural layer or a plastic structural layer, the structural performance of the heat exchanger 32 can be improved, which is beneficial to extending the service life of the heat exchanger 32.
[0099] In some embodiments of this application, the heat exchange core 321 is a one-piece molded part.
[0100] In the above example, one-piece molding simplifies the cumbersome assembly process, reduces human error in the production process, improves product consistency and yield, effectively shortens the manufacturing cycle, and reduces production costs. One-piece molding eliminates potential gaps at joints, reducing thermal resistance and leakage risks, making heat transfer more efficient and stable, and significantly improving heat exchange efficiency. One-piece molding also gives the heat exchange core 321 strong structural strength, better resisting the effects of external forces such as vibration and pressure fluctuations, extending the service life of the heat exchange component 32, and ensuring its long-term reliable operation under various working conditions.
[0101] In some embodiments of this application, the heat exchange core 321 is an integrally extruded metal part, or the heat exchange core 321 is an injection molded part.
[0102] For example, the heat exchange core 321 is a one-piece extruded metal part. Metal itself has excellent thermal conductivity, and the one-piece extrusion molding process ensures uniform metal material distribution without gaps or weak points, greatly reducing thermal resistance and enabling rapid and efficient heat transfer, significantly improving heat exchange efficiency. Simultaneously, this process endows the heat exchange core 321 with high mechanical strength and rigidity, enabling it to withstand high temperatures, high pressures, and strong vibrations and impacts, allowing for stable operation under complex and harsh conditions and greatly extending the equipment's service life. Furthermore, one-piece extrusion molding reduces the assembly steps of components, lowers human error in the production process, improves product consistency and yield, shortens the manufacturing cycle, and saves production costs.
[0103] For example, the heat exchange core 321 is an injection-molded part. The injection molding process can effectively shape complex internal flow channel structures, enabling more rational and efficient flow and heat exchange of hot and cold fluids within the heat exchange core 321. Plastic materials are generally lightweight, which can significantly reduce the overall weight of the equipment, facilitating transportation and installation. Furthermore, the injection-molded heat exchange core 321 effectively avoids corrosion problems that may occur with metal parts, providing reliable protection for the equipment and further ensuring the long-term stable operation of the heat exchange component 32.
[0104] In the above example, by making the heat exchange core 321 an integrally extruded metal part, or by making the heat exchange core 321 an injection molded part, the stability of the heat exchange core 321 can be improved, thereby increasing the service life of the heat exchange core 321.
[0105] In some embodiments of this application, the heat exchange core 321 extends along a first direction, and the heat exchange core 321 has a first plate surface 51 and a second plate surface 52 opposite to each other in a second direction. A plurality of partition ribs 53 extending along the first direction are provided between the first plate surface 51 and the second plate surface 52. The plurality of partition ribs 53 are arranged at intervals along the second direction to form a heat exchange channel 41 between two adjacent partition ribs 53.
[0106] In the above example, multiple partition ribs 53 extending along the first direction and arranged between the opposing first plate surface 51 and second plate surface 52 can effectively guide the fluid. The heat exchange channel 41 constructed by the spaced partition ribs 53 effectively increases the contact area between the fluid and the heat exchange core 321, making heat transfer more complete and greatly improving the heat exchange efficiency. Furthermore, the partition ribs 53 can effectively enhance the structural strength of the heat exchange core 321 in the first and second directions, enabling the heat exchange core 321 to better withstand internal fluid pressure and external vibration and impact.
[0107] In some embodiments of this application, the first plate surface 51 and the second plate surface 52 are parallel, and the included angle between the partition rib 53 and the first plate surface 51 and the second plate surface 52 is an acute angle.
[0108] In the above example, by making the included angles between the partition ribs 53 and the first plate surface 51 and the second plate surface 52 all acute angles, the flow trajectory of the fluid in the heat exchange channel 41 can be effectively changed, creating a turbulent flow effect, avoiding laminar flow, increasing the mixing degree inside the fluid, and further improving heat transfer efficiency. Furthermore, the acute angle arrangement allows for a greater number of partition ribs 53 within a limited space, further increasing the contact area between the fluid and the heat exchange core 321 without increasing the overall volume of the heat exchange core 321, thus improving space utilization. Simultaneously, this structure can also reduce the weight of the heat exchange core 321 to some extent, lowering material costs. Furthermore, the acute angle structural design allows for more rational force transmission, enhancing the heat exchange core 321's ability to resist internal fluid pressure and ensuring stable operation of the equipment under high-pressure conditions.
[0109] This application provides an electrical device, including the battery device 100 of the above embodiments, the battery device 100 being used to store or provide electrical energy.
[0110] In the above technical solution, by setting the battery device 100, the battery device 100 has better charging and discharging performance, thereby enabling the electrical device equipped with the battery device 100 to have better performance.
[0111] The vehicle 1000 disclosed in this application can be a new energy vehicle, which can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000, for example, it can serve 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. The battery device 100 can not only serve as the driving power source for the vehicle 1000, but also 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.
[0112] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0113] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A battery device (100), characterized in that, include: Box (1); Battery cell (2), the battery cell (2) is installed inside the housing (1); A thermal management component (3) is disposed inside the housing (1). The thermal management component (3) is used to contain fluid to regulate the temperature of the battery cell (2). The thermal management component (3) includes a current collector (31) and a heat exchanger (32). The current collector (31) is snapped onto the end of the heat exchanger (32) and communicates with the heat exchanger (32). The heat exchanger (32) includes a heat exchange core (321) and a functional layer (322). The heat exchange core (321) has multiple heat exchange channels (41). At least a portion of the outer surface of the heat exchange core (321) is covered with the functional layer (322).
2. The battery device (100) according to claim 1, characterized in that, The functional layer (322) is provided with at least one layer, wherein when the functional layer (322) is provided with multiple layers, the multiple functional layers (322) are stacked sequentially.
3. The battery device (100) according to claim 2, characterized in that, The thermal management component (3) further includes an adhesive layer disposed between the heat exchange core (321) and the functional layer (322), and / or, the adhesive layer disposed between two adjacent functional layers (322).
4. The battery device (100) according to any one of claims 1-3, characterized in that, The functional layer (322) is integrally formed on the outer surface of the heat exchange core (321).
5. The battery device (100) according to claim 4, characterized in that, The functional layer (322) includes a metal structure layer integrally extruded on the outer periphery of the heat exchange core (321), and / or the functional layer (322) includes a plastic structure layer injection molded on the outer periphery of the heat exchange core (321).
6. The battery device (100) according to any one of claims 1-5, characterized in that, The heat exchange core (321) is a one-piece molded part.
7. The battery device (100) according to claim 6, characterized in that, The heat exchange core (321) is an integrally extruded metal part, or the heat exchange core (321) is an injection molded part.
8. The battery device (100) according to claim 1, characterized in that, The heat exchange core (321) extends along a first direction, and the heat exchange core (321) has a first plate surface (51) and a second plate surface (52) opposite to each other in a second direction. A plurality of partition ribs (53) extending along the first direction are provided between the first plate surface (51) and the second plate surface (52). The plurality of partition ribs (53) are spaced apart along the second direction to form the heat exchange channel (41) between two adjacent partition ribs (53).
9. The battery device (100) according to claim 8, characterized in that, The first plate surface (51) and the second plate surface (52) are parallel, and the included angle between the partition rib (53) and the first plate surface (51) and the second plate surface (52) is an acute angle.
10. An electrical device, characterized in that, The battery device (100) includes any one of claims 1-9, the battery device (100) being used to store or provide electrical energy.