Heating apparatus and heating method

Abstract

The embodiment of the present application provides a heating device and a heating method, the heating device comprises: a cavity, at least one first supporting assembly and a second supporting assembly are arranged in the cavity and are spaced apart along a first direction, the first supporting assembly and the second supporting assembly both comprise a supporting part, the first supporting assembly further comprises an air flow adjusting part, the supporting part is used for supporting a heating object, a first hole is arranged on the air flow adjusting part, an adjustable-opening ventilation valve is arranged in the first hole, and the first supporting assembly is located below the second supporting assembly; a hot air inlet is arranged on the wall of the cavity and is located below the plurality of supporting assemblies; and a hot air outlet is arranged on the wall of the cavity and is located above the plurality of supporting assemblies. The heating device and the heating method provided by the embodiment of the present application can quickly heat the heating object.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and more specifically, to a heating device and a heating method. Background Technology

[0002] Due to their advantages such as high energy density, rechargeability, safety, and environmental friendliness, batteries are widely used in new energy vehicles, consumer electronics, energy storage systems, and other fields.

[0003] During battery production, a high-temperature aging process is performed. This involves heating the individual battery cells to a specific temperature (aging temperature) and holding them at that temperature for a certain period after assembly, electrolyte filling, and the first charge-discharge formation. This aging process improves electrolyte wetting, which is beneficial for stable battery performance. It also facilitates the rejection of substandard batteries with severe self-discharge and the selection of batteries with high consistency.

[0004] When performing high-temperature aging treatment on batteries, it is necessary to quickly heat the individual battery cells to the aging temperature for heat preservation in order to improve production efficiency. Summary of the Invention

[0005] This application provides a heating device and a heating method that can quickly heat an object to the required temperature.

[0006] In a first aspect, a heating device is provided, comprising: at least one cavity, wherein a plurality of supporting components are arranged at intervals along a first direction, the plurality of supporting components including at least one first supporting component and a second supporting component, both the first supporting component and the second supporting component including a supporting part, the first supporting component further including an airflow regulating part, the supporting part being used to support the object to be heated, the airflow regulating part being provided with a first hole, the first hole being provided with a ventilation valve, the opening degree of the ventilation valve being adjustable, the first supporting component being located below the second supporting component; a hot air inlet being provided at the bottom of the cavity; and a hot air outlet being provided at the top of the cavity.

[0007] In this embodiment of the application, by providing at least one first support component and a second support component located above the first support component in the cavity, the hot air flow rate to the object being heated supported on each first support component and the hot air flow rate to the object being heated supported by the support component above each first support component can be adjusted by adjusting the opening degree of the ventilation valve on each first support component, thereby achieving rapid heating of the object being heated.

[0008] Taking a cavity with two support components as an example, in the initial stage of heating the object, hot air enters the cavity from the hot air inlet at the bottom of the cavity. By controlling the opening of the ventilation valves on the upper and lower support components to be less than or equal to a preset opening (e.g., both openings are 0°), more hot air flows to the object supported by the lower support component, thereby rapidly heating the object on the lower support component to the target heating temperature. When the temperature of the object supported by the lower support component reaches the target heating temperature, the opening of the ventilation valve on the lower support component can be increased, allowing hot air to quickly flow through the ventilation valve to the object supported by the upper support component, thereby rapidly heating the object supported by the upper support component to the target heating temperature, thus achieving rapid heating of the object in the cavity.

[0009] In one possible implementation, both the first support assembly and the second support assembly include two support plates disposed opposite each other along a second direction. The two support plates of the first support assembly and the two support plates of the second support assembly are disposed on the side wall of the cavity, and the second direction is perpendicular to the first direction.

[0010] In this embodiment of the application, by setting the support assembly to include two support plates along the second direction, the material of the support plates can be saved, and the heating space inside the cavity can be increased, which facilitates the heating of the object.

[0011] In one possible implementation, both support plates of the first support assembly include support portions, and both support plates of the second support assembly also include support portions.

[0012] In this embodiment of the application, by providing support portions on both support plates that are arranged opposite to each other along the second direction, it is convenient to support the object to be heated in the cavity through the support portions on the two support plates, thereby facilitating the heating of the object.

[0013] In one possible implementation, one of the two support plates of the first support assembly further includes an airflow regulating section, and the support section on one of the support plates of the first support assembly is located inside the airflow regulating section on one of the support plates of the first support assembly along a second direction.

[0014] In this embodiment, by providing an airflow regulating section on one support plate of the first support assembly, the flow rate of hot air towards the object being heated supported on the first support assembly and the flow rate of hot air towards the object being heated supported by the support assembly above the first support assembly can be adjusted by changing the opening of the ventilation valve of the airflow regulating section on the support plate, thereby achieving rapid heating of the object. Furthermore, providing an airflow regulating section on a support plate above the first support assembly simplifies the design of the first support assembly.

[0015] In one possible implementation, the other of the two support plates of the first support assembly further includes an airflow regulating section, and the support section on the other support plate of the first support assembly is located inside the airflow regulating section on the other support plate of the first support assembly along a second direction.

[0016] In this embodiment, by providing airflow regulating parts on both support plates of the first support assembly, the opening degree of the ventilation valves of the airflow regulating parts on the two support plates can be flexibly adjusted to flexibly adjust the hot air flow rate to the object being heated supported on the first support assembly and the hot air flow rate to the object being heated supported by the support assembly above the first support assembly, thereby achieving rapid heating of the object being heated.

[0017] In one possible implementation, the second support component also includes an airflow regulating section.

[0018] In this embodiment, by adjusting the opening of the ventilation valve of the airflow regulating part on the second support assembly, the coverage range of the hot air flowing to the heated object supported by the second support assembly can be adjusted, thereby achieving uniform heating of the heated object on the second support assembly.

[0019] In one possible implementation, one of the two support plates of the second support assembly further includes an airflow regulating section, and the support portion on one support plate of the second support assembly is located inside the airflow regulating section on one support plate of the second support assembly along a second direction.

[0020] In this embodiment, by providing an airflow regulating section on one support plate of the second support assembly, the coverage area of ​​the hot air flowing towards the object being heated supported on the second support assembly can be adjusted by changing the opening degree of the ventilation valve of the airflow regulating section on the support plate, thereby achieving uniform heating of the object. On the other hand, by providing an airflow regulating section on one support plate above the second support assembly, the design of the second support assembly can be simplified.

[0021] In one possible implementation, the other support plate of the two support plates of the second support assembly further includes an airflow regulating section, and the support portion on the other support plate of the second support assembly is located inside the airflow regulating section on the other support plate of the second support assembly along a second direction.

[0022] In this embodiment, by providing airflow regulating parts on both support plates of the second support assembly, the opening degree of the ventilation valves of the airflow regulating parts on the two support plates can be flexibly adjusted, thereby flexibly adjusting the coverage range of the hot air flowing to the heated object supported by the second support assembly, and achieving uniform heating of the heated object supported by the second support assembly.

[0023] In one possible implementation, the receiving position is provided with multiple second holes extending through the first direction.

[0024] In this embodiment of the application, by providing a plurality of second holes penetrating in the first direction on the bottom wall of the receiving position, hot air flowing in from the hot air inlet can flow to the object to be heated through the second holes, thereby effectively heating the object to be heated.

[0025] In one possible implementation, the object being heated includes a single battery cell.

[0026] In the embodiments of this application, heating equipment can be used to heat the battery cells, such as for aging treatment, which can achieve rapid and accurate heating of the battery cells.

[0027] In one possible implementation, a plurality of thermal expansion side plates are provided on the receiving position. When the square battery cell is placed in the receiving position, both of the largest faces of the square battery cell are opposite to the thermal expansion side plates, and the thermal expansion side plates include thermal expansion material, so that when the square battery cell is heated, the thermal expansion side plates apply an expansion force to the largest face of the square battery cell, and the object being heated includes the square battery cell.

[0028] In this embodiment, a thermal expansion material is provided on the thermal expansion side plate of the accommodating position that is opposite to the two largest faces of the square battery cell. This allows the largest face of the battery cell to be squeezed by the expansion of the thermal expansion material when the square battery cell is heated, thereby improving the heating effect of the battery cell. For example, it can promote the contact between the electrode material and the electrolyte during battery aging treatment and promote the formation of a solid electrolyte interface membrane (SEI) on the negative electrode surface of the battery cell.

[0029] In one possible implementation, the thermal expansion material satisfies at least one of the following: along the length direction of the square battery cell, the two sides of the thermal expansion material are recessed by 3mm to 20mm relative to the two sides of the square battery cell; along the height direction of the square battery cell, the two sides of the thermal expansion material are recessed by 3mm to 13mm relative to the two sides of the square battery cell; along the thickness direction of the square battery cell, the size range of the thermal expansion material is 1mm to 8mm; the thermal expansion material includes an expansion alloy, and the linear expansion coefficient of the expansion alloy is greater than or equal to a value in the range of 12×10^-6 / ℃ to 55×10^-6 / ℃.

[0030] In the embodiments of this application, by setting the thermal expansion material along the length, width, and thickness directions of the square battery cell, as well as the position and linear expansion coefficient of the thermal expansion material within a reasonable range, the thermal expansion material can effectively apply pressure to the square battery cell when it expands. Moreover, the pressure application position avoids the corners of the square battery cell, which can reduce the risk of deformation and breakage of the square battery cell caused by stress concentration at the corners of the square battery cell when applying pressure.

[0031] In one possible implementation, when the dimension of the square battery cell along the thickness direction of the square battery cell is less than or equal to 40 mm, the thermal expansion material satisfies at least one of the following: along the length direction of the square battery cell, the two sides of the thermal expansion material are recessed by 3 mm to 8 mm relative to the two sides of the square battery cell; along the height direction of the square battery cell, the two sides of the thermal expansion material are recessed by 3 mm to 8 mm relative to the two sides of the square battery cell; and along the thickness direction of the square battery cell, the dimension of the thermal expansion material is in the range of 2 mm to 4 mm.

[0032] In one possible implementation, when the dimension of the square battery cell along the thickness direction is greater than 40 mm and less than or equal to 90 mm, the thermal expansion material satisfies at least one of the following: along the length direction of the square battery cell, the two sides of the thermal expansion material are recessed by 12 mm to 18 mm relative to the two sides of the square battery cell; along the height direction of the square battery cell, the two sides of the elastic material are recessed by 8 mm to 12 mm relative to the two sides of the square battery cell; and along the thickness direction of the square battery cell, the dimension of the thermal expansion material is in the range of 4 mm to 7 mm.

[0033] In one possible implementation, when the group margin of the square battery cell is ≤92%, the linear expansion coefficient of the thermal expansion material ranges from 16×10^-6 / ℃ to 32×10^-6 / ℃; or, when the group margin of the square battery cell is greater than 92% and less than or equal to 98%, the linear expansion coefficient of the thermal expansion material ranges from 32×10^-6 / ℃ to 50×10^-6 / ℃.

[0034] In the embodiments of this application, by selecting a thermal expansion material with a suitable coefficient of linear expansion based on the group margin of the square battery cell, pressure can be reasonably applied to the square battery cell so as to reasonably apply pressure to the electrode assembly in the square battery cell.

[0035] In one possible implementation, the thermal expansion side plate also includes an elastic material disposed on the side of the thermal expansion material close to the square battery cell along the thickness direction of the square battery cell.

[0036] In this embodiment of the application, by providing an elastic material on the thermal expansion side plate, the elastic material can directly contact the square battery cell, which can reduce the damage to the casing of the square battery cell when it is placed in the housing position for heating.

[0037] In one possible implementation, the elastic material satisfies at least one of the following: along the length direction of the square battery cell, the dimension by which the two sides of the elastic material are recessed relative to the two sides of the square battery cell is the same as the dimension by which the two sides of the thermal expansion material are recessed relative to the two sides of the square battery cell; along the height direction of the square battery cell, the dimension by which the two sides of the elastic material are recessed relative to the two sides of the square battery cell is the same as the dimension by which the two sides of the thermal expansion material are recessed relative to the two sides of the square battery cell; along the thickness direction of the square battery cell, the size of the elastic material ranges from 2 mm to 13 mm; the elastic material includes at least one of silicone or rubber.

[0038] In the embodiments of this application, by setting the size and position of the elastic material within a reasonable range and selecting a reasonable material as the elastic material, the damage to the outer shell of the square battery cell when it is placed in the housing space for heating can be effectively reduced.

[0039] In one possible implementation, when the dimension of the square battery cell along the thickness direction is less than or equal to 40 mm, the size of the elastic material along the thickness direction is in the range of 3 mm to 8 mm; or, when the dimension of the square battery cell along the thickness direction is greater than 40 mm and less than or equal to 90 mm, the size of the elastic material along the thickness direction is in the range of 8 mm to 12 mm.

[0040] In one possible implementation, the thermal expansion side plate further includes a substrate, with the thermal expansion material disposed on the side of the substrate close to the square battery cell along the thickness direction of the square battery cell.

[0041] In this embodiment, by providing a thermal expansion material on the substrate, the dimensions of the thermal expansion material along the thickness direction of the square battery cell can be flexibly adjusted, thereby adjusting the dimensions between adjacent thermal expansion side plates along the thickness direction of the square battery cell, which can be applied to the heating of different types of square battery cells.

[0042] In one possible implementation, without heating, the thermal expansion side plate is interference-fitted with the square battery cell along the thickness direction of the square battery cell.

[0043] In this embodiment, by interfering with the thermal expansion side plate and the square battery cell along the thickness direction of the square battery cell, the extrusion force of the elastic material on the square battery cell can fix the square battery cell in the receiving position, which can reduce the possibility of the square battery cell shaking in the receiving position.

[0044] In one possible implementation, the heating device further includes a temperature monitoring device disposed on the object being heated for monitoring the temperature of the object being heated.

[0045] In this embodiment, a temperature detection device is set to monitor the temperature of the object being heated, so that the opening of the ventilation valve on the support assembly can be adjusted according to the temperature of the object being heated.

[0046] Secondly, a heating method is provided, applicable to a heating device including at least one cavity, a hot air inlet, and a hot air outlet. The cavity is provided with a plurality of support assemblies arranged at intervals along a first direction. The plurality of support assemblies include at least one first support assembly and a second support assembly. Both the first and second support assemblies include a support portion. The first support assembly further includes an airflow regulating portion. The support portion is used to support a heated object or a tray placed on the heated object. The airflow regulating portion is provided with a first hole, and a ventilation valve is provided in the first hole. The opening degree of the ventilation valve is adjustable. The first support assembly is located below the second support assembly. The hot air inlet is located on the wall of the cavity and below the plurality of support assemblies. The hot air outlet is located on the wall of the cavity and above the plurality of support assemblies. The heating method includes: acquiring the temperature of the heated object supported on the plurality of first support assemblies; and controlling the opening degree of the ventilation valve on the plurality of first support assemblies based on the temperature of the heated object supported on the plurality of first support assemblies.

[0047] In this embodiment, the opening of the ventilation valve on each first support component can be adjusted based on the temperature of the object being heated supported on each first support component, thereby adjusting the hot air flow rate to the object being heated supported on each first support component and the hot air flow rate to the object being heated supported by the support component above each first support component, so as to achieve rapid heating of the object being heated.

[0048] In one possible implementation, the opening degree of the ventilation valves on the multiple first support components is controlled according to the temperature of the heated object supported on the multiple first support components, including: when the temperature of the heated object supported by the lowest first support component is less than a preset temperature, controlling the opening degree of the ventilation valves of the multiple first support components to be less than or equal to a preset opening degree, wherein the preset temperature is less than the target heating temperature of the heated object and the difference between the target heating temperature and the preset temperature is less than or equal to a target threshold, or the preset temperature is equal to the target heating temperature.

[0049] In this embodiment, when the temperature of the object being heated supported by the lowest first support component is less than or equal to a preset temperature, the opening degree of the ventilation valves on the multiple first support components is controlled to be less than or equal to the preset opening degree. Since the opening degree of the ventilation valves on the lowest first support component is relatively small, more hot air flows to the object being heated supported by the lowest first support component, thereby enabling the temperature of the object being heated supported by the lowest second support component to rise rapidly.

[0050] In one possible implementation, controlling the opening degree of the ventilation valves on the plurality of first support components to be less than or equal to a preset opening degree includes: controlling the opening degree of the ventilation valves on the plurality of first support components to be a minimum opening degree value.

[0051] In this embodiment, when the temperature of the object being heated supported by the lowest second support component is less than or equal to a preset temperature, the opening degree of the ventilation valves of the multiple first support components can be adjusted to the minimum value, thereby minimizing the hot air flow through the ventilation valve of each first support component and maximizing the hot air flow to the object being heated supported by each first support component, so as to facilitate rapid heating of the object being heated supported by each first support component.

[0052] In one possible implementation, the opening degree of the ventilation valves on the multiple first support components is controlled according to the temperature of the heated object supported on the multiple first support components, including: increasing the opening degree of the ventilation valve of the i-th first support component when the temperature of the heated object supported by the i-th first support component is greater than or equal to a preset temperature, wherein the preset temperature is less than the target heating temperature of the heated object and the difference between the target heating temperature and the preset temperature is less than or equal to a target threshold, or the preset temperature is equal to the target heating temperature.

[0053] In this embodiment, when the temperature of the heated object supported by the i-th first support component reaches the target heating temperature, the opening of the ventilation valve on the i-th first support component can be increased so that hot air can quickly pass through the ventilation valve on the i-th first support component and flow to the heated object supported by the support component above the i-th first support component, thereby rapidly raising the temperature of the heated object supported by the support component above to the target heating temperature. This process is repeated to achieve rapid heating of the heated object in the cavity.

[0054] In one possible implementation, increasing the opening degree of the ventilation valve on the i-th first support assembly includes: increasing the opening degree of the ventilation valve on the i-th first support assembly to a maximum value. In this embodiment, when the temperature of the object being heated supported by the i-th first support assembly gradually heats up to or near the target heating temperature, the opening degree of the ventilation valve on the i-th first support assembly can be increased to the maximum. This minimizes the flow rate of hot air to the object being heated supported by the i-th first support assembly, allowing hot air to flow more quickly from the ventilation valve on the i-th first support assembly to the object being heated supported by the upper support assembly, thereby achieving rapid heating of the object being heated within the cavity.

[0055] Thirdly, a heating device is provided, comprising a memory and a processor, the memory for storing instructions and the processor for reading the instructions and executing the heating method as described in the second aspect and any possible implementation thereof.

[0056] Fourthly, a chip is provided, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform a heating method as described in the second aspect and any possible implementation thereof.

[0057] Fifthly, a computer program is provided that, when executed by a computer, causes the computer to implement the heating method as described in the second aspect and any possible implementation thereof.

[0058] In a sixth aspect, a computer-readable storage medium is provided for storing a computer program that, when executed by a computer, causes the computer to implement the heating method as described in the second aspect and any possible implementation thereof.

[0059] In a seventh aspect, a computer program product is provided, including computer program instructions that, when executed by a computer, cause the computer to implement the heating method as described in the second aspect and any possible implementation thereof. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the structure of the heating device provided in an embodiment of this application.

[0061] Figure 2 This is a schematic diagram of the cavity structure provided in an embodiment of this application.

[0062] Figure 3 This is a schematic diagram of the cavity structure provided in an embodiment of this application.

[0063] Figure 4This is a schematic diagram of the airflow regulating plate provided in an embodiment of this application.

[0064] Figure 5 This is a schematic diagram of the cavity structure provided in an embodiment of this application.

[0065] Figure 6 This is a schematic diagram of the cavity structure provided in an embodiment of this application.

[0066] Figure 7 This is a schematic diagram of the cavity structure provided in an embodiment of this application.

[0067] Figure 8 This is a schematic diagram of the cavity structure provided in an embodiment of this application.

[0068] Figure 9 This is a schematic diagram of the cavity structure provided in an embodiment of this application.

[0069] Figure 10 This is a schematic diagram of a cavity with a tray provided in an embodiment of this application.

[0070] Figure 11 This is a schematic diagram of a battery cell placed on a tray, as provided in an embodiment of this application.

[0071] Figure 12 This is a schematic diagram of a battery cell placed on a tray, as provided in an embodiment of this application.

[0072] Figure 13 This is a schematic diagram of the structure of the thermal expansion side plate provided in an embodiment of this application.

[0073] Figure 14 This is a schematic diagram of the structure of a square battery cell provided in an embodiment of this application.

[0074] Figure 15 This is a schematic diagram of the structure of the thermal expansion side plate provided in an embodiment of this application.

[0075] Figure 16 This is a schematic diagram of the structure of the heating device provided in an embodiment of this application.

[0076] Figure 17 This is a schematic flowchart of the heating method provided in the embodiments of this application.

[0077] Figure 18 This is a schematic flowchart of the heating method provided in the embodiments of this application.

[0078] Figure label:

[0079] Heating device: 10, cavity: 20, side wall of cavity: 21, top wall of cavity: 22, bottom wall of cavity: 23, hot air inlet: 30, hot air outlet: 40, support assembly: 50, first support assembly: 51, second support assembly: 52, support plate: 511, support part: 512, airflow regulating part: 513, first hole: 5131, ventilation valve: 5132, tray: 60, support position: 610, accommodating position: 620, second hole: 621, thermal expansion side plate: 630, thermal expansion material: 631, elastic material: 632, substrate: 633, control module: 70, square battery cell: 90, electrode assembly: 91, shell: 92, corner area: 911, straight area: 912. Detailed Implementation

[0080] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0081] 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, "a plurality of" means two or more, unless otherwise explicitly defined. The terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings of this application, are intended to cover non-exclusive inclusion.

[0082] 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 alone, A and B simultaneously, or B alone. Additionally, the character " / " in this text generally indicates that the preceding and following related objects have an "or" relationship.

[0083] 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.

[0084] In this application, the terms "upper," "lower," "left," "right," "inner," and "outer," indicating orientation or positional relationships, are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0085] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0086] Due to their advantages such as high energy density, rechargeability, safety, and environmental friendliness, batteries are widely used in new energy vehicles, consumer electronics, energy storage systems, and other fields.

[0087] During battery production, a high-temperature aging process is performed. This involves heating the individual battery cells to a specific temperature (aging temperature) and holding them at that temperature for a certain period after assembly, electrolyte filling, and the first charge-discharge formation. This aging process improves electrolyte wetting, which is beneficial for stable battery performance. It also facilitates the rejection of substandard batteries with severe self-discharge and the selection of batteries with high consistency.

[0088] When performing high-temperature aging treatment on batteries, it is necessary to quickly and accurately heat the individual battery cells to the aging temperature for heat preservation in order to improve production efficiency.

[0089] Based on the above problems, this application provides a heating device and a heating method. The heating device includes: a plurality of support components arranged at intervals along a first direction in a cavity, the plurality of support components including at least one first support component and a second support component, both the first support component and the second support component including a support portion, the first support component further including an airflow regulating portion, the support portion being used to support the object to be heated, the airflow regulating portion being provided with a first hole, the first hole being provided with a ventilation valve, the opening degree of the ventilation valve being adjustable, the first support component being located below the second support component; a hot air inlet, disposed on the wall of the cavity and located below the plurality of support components; and a hot air outlet, disposed on the wall of the cavity and located above the plurality of support components.

[0090] The heating device provided in this application embodiment can quickly heat the object to the required temperature.

[0091] The following combination Figures 1 to 16 The heating device 10 provided in the embodiments of this application will be described by way of example.

[0092] like Figures 1 to 4 As shown, the heating device 10 includes at least one cavity 20, a hot air inlet 30, and a hot air outlet 40.

[0093] The cavity 20 is provided with a plurality of support components 50 arranged at intervals along a first direction. The plurality of support components 50 include at least one first support component 51 and a second support component 52. Both the first support component 51 and the second support component 52 include a support part 512. The first support component 51 also includes an airflow regulating part 513. The support part 512 is used to support the heated object. The airflow regulating part 513 is provided with a first hole 5131. A ventilation valve 5132 is provided in the first hole 5131. The opening degree of the ventilation valve 5132 is adjustable. The first support component 51 is located below the second support component 52.

[0094] The hot air inlet 30 is located on the wall of the cavity 20 and below the plurality of support components 50.

[0095] Hot air outlet 40 is located on the wall of cavity 20 and above multiple support components 50.

[0096] As an example, cavity 20 can be rectangular or cubic.

[0097] As an example, the first direction can be parallel to the vertical direction or the height direction of the cavity 20.

[0098] For a cavity 20, a hot air inlet 30, multiple first support components 51, second support components 52, and a hot air outlet 40 are arranged sequentially from bottom to top along the first direction.

[0099] For example, such as Figure 2 As shown, the cavity 20 is provided with two support components 50, that is, along the first direction from bottom to top, there is a first support component 51 and a first and second support component 52. The first support component 51 located at the bottom includes a support part 512 and an airflow regulating part 513, and the second support component 52 located at the top includes a support part 512.

[0100] For example, such as Figure 3 As shown, the cavity 20 is provided with three support components 50. That is, along the first direction from bottom to top, the first support component 51, the second support component 52 and the third support component 51 are arranged in sequence. The first support component 51, located at the bottom and middle, includes a support part 512 and an airflow regulating part 513. The second support component 52, located at the top, includes a support part 512.

[0101] As an example, the object to be heated may be placed directly or indirectly on the support portion 512 of the support assembly 50.

[0102] As an example, such as Figure 2 and Figure 3 As shown, a support assembly 50 may include a support plate 511, which may be disposed on the side wall of the cavity 20. For example, the support plate 511 may be tightly fitted to the left side wall, right side wall and rear side wall of the cavity 20.

[0103] As an example, a support plate 511 of the first support assembly 51 may include at least one support portion 512 and at least one airflow regulating portion 513, and a support plate 511 of the second support assembly 52 may include one support portion 512. For example, as Figure 2 and Figure 3 As shown, a support plate 511 of the first support assembly 51 may include a support portion 512 and an airflow regulating portion 513, and a support plate 511 of the second support assembly 52 may include a support portion 512.

[0104] As an example, Figure 2 and Figure 3 The support portion 512 shown may also be provided with multiple ventilation holes. For example, multiple objects to be heated can be placed directly on the support portion 512 of a support assembly 50, with gaps between the multiple objects to be heated. The ventilation holes on the support portion 512 facilitate direct contact between hot air and the objects to be heated, thereby facilitating heating of the objects. Furthermore, the hot air can flow upwards from the support portion 512 of the support assembly 50 through the ventilation holes and the gaps between the objects to be heated, facilitating the circulation of hot air.

[0105] It should be understood that the shape of the ventilation holes on the support portion 512 is not limited in this embodiment. The ventilation holes can be rectangular, circular, or the support portion 512 can be configured as a mesh structure.

[0106] As an example, the front sidewall of the cavity 20 can be the door of the cavity 20, and the support plate 511 of the support assembly 50 can be tightly fitted to the front sidewall of the cavity 20, or there can be a certain gap.

[0107] As an example, the bottom of the bottom wall 23 and / or side wall 21 of the cavity 20 may be provided with multiple openings as hot air inlets 30.

[0108] As an example, the top of the top wall 22 and / or the side wall 21 of the cavity 20 may be provided with multiple openings as hot air outlets 40.

[0109] It should be understood that the shapes of the hot air inlet 30 and the hot air outlet 40 are not limited in the embodiments of this application. For example, the openings on the bottom wall 23 and the top wall 22 of the cavity 20 can be rectangular openings. Alternatively, the openings on the bottom wall 23 and the top wall 22 of the cavity 20 can be circular openings. Alternatively, the bottom wall 23 and the top wall 22 of the cavity 20 can be a mesh structure. Of course, the shapes of the openings on the bottom wall 23 and the top wall 22 of the cavity 20 can be the same or different.

[0110] As an example, when heating an object, hot air can enter from the hot air inlet 30, heat the object supported by multiple support components 50 from bottom to top, and then flow out from the hot air outlet 40.

[0111] By adjusting the opening of the ventilation valve 5132 on the second support assembly 52, the flow rate of hot air to the object being heated supported by the second support assembly 52 and the flow rate of hot air to the object being heated above the support assembly 50 can be adjusted.

[0112] When the opening degree of the ventilation valve 5132 on a second support component 52 is less than or equal to the preset opening degree, for example, the opening degree is 0, the hot air entering from the hot air inlet 30 cannot flow through the ventilation valve 5132 on the second support component 52. At this time, more hot air flows to the object being heated supported by the second support component 52, thereby causing the object being heated supported by the second support component 52 to heat up quickly, such as rapidly heating up to the target heating temperature (the temperature that the object needs to be heated to). When the opening degree of the ventilation valve 5132 on the second support assembly 52 is greater than or equal to the preset opening degree, such as when the opening degree is greater than 0°, the hot air entering from the hot air inlet 30 can flow to the hot air outlet 40 through the ventilation valve 5132 on the second support assembly 52. ​​At this time, the hot air on the object being heated supported by the second support assembly 52 is relatively reduced, and the hot air can quickly pass through the ventilation valve 5132 of the second support assembly 52 to flow to the object being heated supported by the support assembly 50 above the second support assembly 52 (which can be the first support assembly 51 or the second support assembly 52), thereby causing the object being heated supported by the support assembly 50 above the second support assembly 52 to quickly heat up to the target heating temperature.

[0113] The opening degree of ventilation valve 5132 can be used to measure its flow capacity. A larger opening degree of ventilation valve 5132 results in a larger flow rate of hot air through it. For example, ... Figure 4 As shown, the ventilation valve 5132 can be a butterfly valve, which can be installed in the first opening. The disc-shaped butterfly plate of the butterfly valve rotates around its axis, with a rotation angle (opening degree) between 0° and 90°. When rotated to 90°, the butterfly valve is in the fully open state, and the hot air flow through the butterfly valve is the maximum; when rotated to 0°, the butterfly valve is in the closed state, and the hot air flow through the butterfly valve is 0.

[0114] In this embodiment of the application, by providing at least one first support component 51 and a second support component 52 located above the first support component 51 in the cavity 20, the hot air flow rate to the object being heated supported on each first support component 51 and the hot air flow rate to the object being heated supported by the support component 50 above each first support component 51 can be adjusted by adjusting the opening degree of the ventilation valve 5132 on each first support component 51, thereby achieving rapid heating of the object being heated.

[0115] Taking a cavity 20 with two supporting components 50 as an example, in the initial stage of heating the object, hot air enters the cavity 20 from the hot air inlet at the bottom of the cavity 20. By controlling the opening of the ventilation valves 5132 on the upper and lower supporting components 50 to be less than or equal to the preset opening (e.g., both openings are 0°), more hot air flows to the object supported by the lower supporting component 50, thereby rapidly heating the object on the lower supporting component 50 to the target heating temperature. When the temperature of the object supported by the lower supporting component 50 reaches the target heating temperature, the opening of the ventilation valves 5132 on the lower supporting component 50 can be increased, allowing hot air to quickly flow through the ventilation valves 5132 on the lower supporting component 50 to the object supported by the upper supporting component 50, thereby rapidly heating the object on the upper supporting component 50 to the target heating temperature, thus achieving rapid heating of the object in the cavity 20.

[0116] In some embodiments, for each heated object supported by the support component 50, there is a gap around the heated object for hot air circulation.

[0117] For example, such as Figure 2 and Figure 3 The support assembly 50 shown has multiple ventilation holes on its support portion 512. Multiple heating objects are placed directly on the support portion 512, and there are gaps between the multiple heating objects so that the heating objects do not completely cover the ventilation holes.

[0118] For example, Figure 2 or Figure 3 There is a gap between a support plate 511 of the support assembly 50 shown and the front and rear sidewalls of the cavity 20.

[0119] In this way, hot air can circulate from bottom to top around the object being heated, which facilitates rapid heating of the object and also facilitates the circulation of hot air.

[0120] For ease of description and understanding, the heating device 10 of this application embodiment will be described exemplarily below, taking the cavity 20 as including a first support component 51 and a second support component 52 as an example.

[0121] In some embodiments, such as Figure 5 As shown, both the first support assembly 51 and the second support assembly 52 include two support plates 511 arranged opposite each other along a second direction. The two support plates 511 of the first support assembly 51 and the two support plates 511 of the second support assembly 52 are both disposed on the side wall 21 of the cavity 20, and the second direction is perpendicular to the first direction.

[0122] As an example, the first direction is parallel to the height direction of the cavity 20, and the second direction can be parallel to the length direction of the cavity 20.

[0123] Alternatively, the first direction is parallel to the vertical direction, and the second direction is parallel to the horizontal direction.

[0124] As an example, one support plate 511 of the support assembly 50 is disposed on the left side wall and the rear side wall of the cavity 20, and the other support plate 511 is disposed on the right side wall and the rear side wall of the cavity 20.

[0125] As an example, the front sidewall of the cavity 20 can be the door of the cavity 20, and the two support plates 511 of the support assembly 50 can be tightly fitted to the front sidewall of the cavity 20, or they can be spaced apart.

[0126] In this embodiment of the application, by setting the support assembly 50 to include two support plates 511 along the second direction, the material of the support plates 511 can be saved, and the heating space in the cavity 20 can be increased, which facilitates the heating of the object.

[0127] In some embodiments, such as Figure 5 As shown, both support plates 511 of the first support assembly 51 include support portions 512, and both support plates 511 of the second support assembly 52 also include support portions 512.

[0128] Both the first support assembly 51 and the second support assembly 52 can support the heated object in the cavity 20 through their support parts 512.

[0129] As an example, multiple heating objects can be placed on one side of a support plate 511 of the support assembly 50 along the second direction, and on the other side of the support assembly 50 along the second direction, multiple heating objects can be placed on the support portion 512 of another support plate 511 of the support assembly 50 along the other side of the second direction. The multiple heating objects are arranged sequentially along a third direction, which is perpendicular to both the first and second directions.

[0130] In this embodiment of the application, by providing support portions 512 on both support plates 511 that are arranged opposite to each other along the second direction of the support assembly 50, it is convenient to support the object to be heated in the cavity 20 through the support portions 512 on the two support plates 511, thereby facilitating the heating of the object.

[0131] In some embodiments, such as Figure 5 As shown, one of the two support plates 511 of the first support assembly 51 further includes an airflow regulating part 513, and the support part 512 on the support plate 511 of the first support assembly 51 is located inside the airflow regulating part 513 on the support plate 511 of the first support assembly 51 along the second direction.

[0132] As an example, one support plate 511 of the first support assembly 51 includes a support portion 512 and an airflow regulating portion 513, and the support portion 512 is located inside the airflow regulating portion 513 along the second direction. The other support plate 511 of the first support assembly 51 includes the support portion 512.

[0133] In this embodiment, along the second direction, the closer to the center of the cavity 20, the closer to the inner side; conversely, the closer to the outer side of the cavity 20, the closer to the outer side. For example, taking the left support plate 511 on the first support assembly 51 as an example, the support portion 512 on the support plate 511 is closer to the center of the cavity 20, and the airflow regulating portion 513 on the support plate 511 is closer to the outer side of the cavity 20. Therefore, the support portion 512 on the support plate 511 is located inside the airflow regulating portion 513 on the support plate 511 along the second direction.

[0134] As an example, the opening degree of the ventilation valves 5132 on one support plate 511 of the first support assembly 51 can be controlled and adjusted individually, or all of them can be controlled and adjusted together, or the whole assembly can be controlled and adjusted. For example, the opening degree of the first row of ventilation valves 5132 on one support plate 511 of the first support assembly 51 can be adjusted to 30°, and the opening degree of the second row of ventilation valves 5132 on one support plate 511 of the first support assembly 51 can be controlled to 50°.

[0135] In this embodiment, by providing an airflow regulating part 513 on one of the support plates 511 of the first support assembly 51, the opening degree of the ventilation valve 5132 of the airflow regulating part 513 on the support plate 511 can be adjusted to regulate the flow rate of hot air to the object being heated supported on the first support assembly 51 and the flow rate of hot air to the object being heated supported by the support assembly 50 above the first support assembly 51, thereby achieving rapid heating of the object being heated. On the other hand, providing an airflow regulating part 513 on one of the support plates 511 above the first support assembly 51 simplifies the design of the first support assembly 51.

[0136] In some embodiments, such as Figure 6 As shown, the other support plate 511 of the two support plates 511 of the first support assembly 51 further includes an airflow regulating part 513, and the support part 512 on the other support plate 511 of the first support assembly 51 is located inside the airflow regulating part 513 on the other support plate 511 of the first support assembly 51 along the second direction.

[0137] As an example, both support plates 511 of the first support assembly 51 include a support portion 512 and an airflow regulating portion 513, and along the second direction, the support portion 512 on each support plate 511 is located inside the airflow regulating portion 513 on each support plate 511.

[0138] In this embodiment, along the second direction, the closer to the center of the cavity 20, the closer to the inner side; conversely, the closer to the outer side of the cavity 20, the closer to the outer side. For example, taking the right-side support plate 511 on the first support assembly 51 as an example, the support portion 512 on the support plate 511 is closer to the center of the cavity 20, and the airflow regulating portion 513 on the support plate 511 is closer to the outer side of the cavity 20. Therefore, the support portion 512 on the support plate 511 is located inside the airflow regulating portion 513 on the support plate 511 along the second direction.

[0139] As an example, the opening degree of the ventilation valves 5132 on the two support plates 511 of the second support assembly 52 can be controlled and adjusted individually or as a whole. For example, the opening degree of the ventilation valve 5132 on one support plate 511 of the second support assembly 52 can be adjusted to 20°, and the opening degree of the ventilation valve 5132 on the other support plate 511 of the second support assembly 52 can be adjusted to 50°.

[0140] In this embodiment, by providing airflow regulating parts 513 on both support plates 511 of the first support assembly 51, the opening degree of the ventilation valves 5132 of the airflow regulating parts 513 on the two support plates 511 can be flexibly adjusted to adjust the hot air flow rate to the object being heated supported on the first support assembly 51 and the hot air flow rate to the object being heated supported by the support assembly 50 above the first support assembly 51, thereby achieving rapid heating of the object being heated.

[0141] In some embodiments, such as Figures 7 to 9 As shown, the second support assembly 52 also includes an airflow regulating section 513.

[0142] For example, such as Figures 7 to 9As shown, along the second direction, the second support assembly 52 includes an airflow regulating section 513 located on the left side of its support portion 512. When the hot air blowing from below the second support assembly 52 is biased towards the right side of the object being heated supported by the first support assembly 51, the object being heated supported by the second support assembly 52 is not heated evenly. At this time, by appropriately increasing the opening of the ventilation valve 5132 of the airflow regulating section 513 of the second support assembly 52, the hot air can flow through the ventilation valve 5132 of the second support assembly 52 to the hot air outlet 40, thereby allowing the hot air to also cover the left side of the object being heated supported by the second support assembly 52, achieving uniform heating of the object being heated supported by the second support assembly 52.

[0143] In this embodiment, by adjusting the opening of the ventilation valve 5132 of the airflow regulating part 513 on the second support assembly 52, the coverage range of the hot air flowing to the heated object supported by the second support assembly 52 can be adjusted, thereby achieving uniform heating of the heated object on the second support assembly 52.

[0144] In some embodiments, such as Figure 8 As shown, one of the two support plates 511 of the second support assembly 52 further includes an airflow regulating part 513, and the support part 512 on the support plate 511 of the second support assembly 52 is located inside the airflow regulating part 513 on the support plate 511 of the second support assembly 52 along the second direction.

[0145] As an example, one support plate 511 of the second support assembly 52 includes a support portion 512 and an airflow regulating portion 513, and the support portion 512 is located inside the airflow regulating portion 513 along the second direction. The other support plate 511 of the second support assembly 52 includes the support portion 512.

[0146] In this embodiment, along the second direction, the closer to the center of the cavity 20, the closer to the inner side; conversely, the closer to the outer side of the cavity 20, the closer to the outer side. For example, taking the left support plate 511 on the second support assembly 52 as an example, the support portion 512 on the support plate 511 is closer to the center of the cavity 20, and the airflow regulating portion 513 on the support plate 511 is closer to the outer side of the cavity 20. Therefore, the support portion 512 on the support plate 511 is located inside the airflow regulating portion 513 on the support plate 511 along the second direction.

[0147] As an example, the opening degree of the ventilation valves 5132 on one support plate 511 of the second support assembly 52 can be controlled and adjusted individually, or all of them can be controlled and adjusted together, or the whole assembly can be controlled and adjusted. For example, the opening degree of the first row of ventilation valves 5132 on one support plate 511 of the second support assembly 52 can be adjusted to 30°, and the opening degree of the second row of ventilation valves 5132 on one support plate 511 of the second support assembly 52 can be controlled to 50°.

[0148] In this embodiment, by providing an airflow regulating part 513 on one of the support plates 511 of the second support assembly 52, the opening degree of the ventilation valve 5132 of the airflow regulating part 513 on the support plate 511 can be adjusted to regulate the coverage of the hot air flowing to the object being heated supported on the second support assembly 52, thereby achieving uniform heating of the object being heated. On the other hand, by providing an airflow regulating part 513 on one of the support plates 511 on the upper part of the second support assembly 52, the design of the second support assembly 52 can be simplified.

[0149] In some embodiments, such as Figure 9 As shown, the other support plate 511 of the two support plates 511 of the second support assembly 52 also includes an airflow regulating part 513, and the support part 512 on the other support plate 511 of the second support assembly 52 is located inside the airflow regulating part 513 on the other support plate 511 of the second support assembly 52 along the second direction.

[0150] As an example, both support plates 511 of the second support assembly 52 include a support portion 512 and an airflow regulating portion 513, and along the second direction, the support portion 512 on each support plate 511 is located inside the airflow regulating portion 513 on each support plate 511.

[0151] As an example, the opening degree of the ventilation valves 5132 on the two support plates 511 of the second support assembly 52 can be controlled and adjusted individually. For example, the opening degree of the ventilation valve 5132 on one support plate 511 of the second support assembly 52 can be adjusted to 20°, and the opening degree of the ventilation valve 5132 on the other support plate 511 of the second support assembly 52 can be adjusted to 50°.

[0152] In this embodiment, along the second direction, the closer to the center of the cavity 20, the closer to the inner side; conversely, the closer to the outer side of the cavity 20, the closer to the outer side. For example, taking the right-side support plate 511 on the first support assembly 51 as an example, the support portion 512 on the support plate 511 is closer to the center of the cavity 20, and the airflow regulating portion 513 on the support plate 511 is closer to the outer side of the cavity 20. Therefore, the support portion 512 on the support plate 511 is located inside the airflow regulating portion 513 on the support plate 511 along the second direction.

[0153] In this embodiment of the application, by providing airflow regulating parts 513 on both support plates 511 of the second support assembly 52, the opening degree of the ventilation valves 5132 of the airflow regulating parts 513 on the two support plates 511 can be flexibly adjusted, thereby flexibly adjusting the coverage range of the hot air flowing to the heated object supported on the second support assembly 52, and realizing uniform heating of the heated object supported by the second support assembly 52.

[0154] Figure 8 and Figure 9 In the first support assembly 51, both support plates 511 include a support portion 512 and an airflow regulating portion 513. In some embodiments, it may differ from... Figure 8 and Figure 9 As shown, one support plate 511 of the first support assembly 51 includes a support portion 512 and an airflow regulating portion 513, and the other support plate 511 of the first support assembly 51 includes a support portion 512.

[0155] In some embodiments, such as Figure 10 As shown, a tray 60 is also provided in the cavity 20. The tray 60 includes a receiving position 620 and two support positions 610 located on both sides of the receiving position 620 along the second direction. The receiving position 620 is used to receive the object to be heated, and the two support positions 610 are respectively supported by the support portions 512 of the two support plates 511 in the support assembly 50.

[0156] Each support component 50 can support at least one tray 60. The object to be heated is supported by the support portion 512 of the support component 50 via the tray 60.

[0157] The support positions 610 at both ends of the pallet 60 along the second direction can be provided on the two support portions 512 of the two support plates 511 opposite each other along the second direction of the support assembly 50.

[0158] As an example, at least one heated object can be placed in each tray 60.

[0159] In one embodiment of this application, by placing the object to be heated in the receiving position 620 of the tray 60 and placing the supporting position 610 of the tray 60 in the supporting part 512 of the supporting component 50, the object to be heated can be supported in the supporting part 512 of the supporting component 50, and the object to be heated can be easily placed or removed from the cavity 20.

[0160] In some embodiments, such as Figure 10 As shown, the receiving position 620 is provided with a plurality of second holes 621 extending through the first direction.

[0161] That is, a plurality of second holes 621 are provided in the middle of the tray 60 along the second direction.

[0162] The shape of the second hole 621 can be rectangular, circular or other shapes. In this embodiment, the shape of the second hole 621 is not limited.

[0163] For example, the accommodating bit 620 can be configured as a mesh structure.

[0164] In this embodiment of the application, by providing a plurality of second holes 621 extending through the first direction in the receiving position 620, hot air flowing in from the hot air inlet 30 can flow to the object to be heated through the second holes 621, thereby effectively heating the object to be heated.

[0165] In some embodiments, there are gaps around the object being heated where hot air can circulate.

[0166] As an example, when the object to be heated is placed in the receiving position 620, the object to be heated may not completely cover or block the second hole 621. For example, part of the second hole 621 may be blocked by the object to be heated, while part of the second hole 621 may not be blocked by the object to be heated. This facilitates the flow of hot air.

[0167] In some embodiments, the object to be heated includes a battery cell.

[0168] As an example, a single accommodating space 620 can hold multiple battery cells.

[0169] The battery cell 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 thereto. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0170] In this embodiment of the application, the heating device 10 can be used to heat the battery cells, such as for aging treatment, which can achieve rapid heating of the battery cells.

[0171] In some embodiments, such as Figures 11 to 13 As shown, a plurality of thermal expansion side plates 630 are provided on the accommodating position 620. When the square battery cell 90 is placed in the accommodating position 620, both of the largest surfaces of the square battery cell 90 are opposite to the thermal expansion side plates 630, and the thermal expansion side plates 630 include thermal expansion material 631 so that when the square battery cell 90 is heated, the thermal expansion side plates 630 apply an expansion force to the largest surface of the square battery cell 90. The object to be heated includes the square battery cell 90.

[0172] Typically, the battery cells that require pressure during aging treatment include square battery cells 90, such as pouch cells and hard-shell cells, which may include six faces. Among them, two opposite faces have the largest area and are the two largest faces of the battery cell 90.

[0173] Thermal expansion material 631 can refer to a material whose volume expands as the temperature rises.

[0174] When the square battery cell 90 is placed in the housing position 620 for heating, the thermal expansion side plate 630 expands due to heat, thereby applying an expansion force to the two largest surfaces of the square battery cell 90.

[0175] As an example, such as Figure 11 and Figure 12 As shown, when the square battery cell 90 is placed in the receiving space 540, the height direction of the square battery cell 90 is parallel to the first direction, and both of the largest faces of the square battery cell 90 are opposite to the thermal expansion side plate 630. Furthermore, Figure 11 In the middle, the two largest faces of the square battery cell 90 are opposite each other along the third direction. Figure 12 In the middle, the two largest faces of the square battery cell 90 are opposite each other along the second direction.

[0176] When the square battery cell 90 is heated, the thermal expansion material 631 of the thermal expansion side plate 630 expands, thereby applying pressure to the two largest surfaces of the square battery cell 90. After the heating is completed and the material cools down for a period of time, the thermal expansion material 631 of the thermal expansion side plate 630 returns to its original shape, and the square battery cell 90 can be removed from the receiving position 620.

[0177] As an example, Figure 11 In the area between every two adjacent thermal expansion side plates 630 shown, a square battery cell 90 can be provided along the second direction, or multiple square battery cells 90 can be provided sequentially.

[0178] As an example, Figure 12 In the area between every two adjacent thermal expansion side plates 630 shown, a square battery cell 90 can be set along a third direction, or multiple square battery cells 90 can be set sequentially.

[0179] Figure 11 and Figure 12 The tray 60 shown has side plates on both sides of the accommodating position 620 along the length of the square battery cell. Alternatively, it may differ from... Figure 11 and Figure 12 As shown, the accommodating position 620 may not have side plates on both sides along the length of the square battery cell.

[0180] In this embodiment, by providing a thermal expansion material 631 on the thermal expansion side plate 630, the expansion of the thermal expansion material 631 can compress the square battery cell 90 when it is heated, thereby improving the heating effect of the square battery cell 90, such as promoting the contact between the electrode material and the electrolyte during battery aging treatment, and promoting the formation of a solid electrolyte interface membrane (SEI) on the negative electrode surface of the square battery cell 90, etc.

[0181] As an example, before the square battery cell 90 is placed in the receiving position 620 and heated, there may be a certain gap between the largest surface of the square battery cell 90 and its opposite thermal expansion side plate 630, or there may be no gap.

[0182] In some embodiments, the thermal expansion material 631 satisfies at least one of the following:

[0183] like Figure 13 As shown, along the length of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 3mm to 20mm relative to the two sides of the square battery cell 90.

[0184] like Figure 13 As shown, along the height direction of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 3mm to 13mm relative to the two sides of the square battery cell 90.

[0185] like Figure 13 As shown, along the thickness direction of the square battery cell 90, the size range of the thermal expansion material 631 is 1mm to 8mm.

[0186] The thermal expansion material 631 includes an expansion alloy, the linear expansion coefficient of which ranges from 12×10^-6 / ℃ to 55×10^-6 / ℃.

[0187] In this embodiment, along the length of the square battery cell 90, the size of the thermal expansion material 631 is smaller than the size of the square battery cell 90, and the distance between the two sides of the thermal expansion material 631 and the two sides of the square battery cell 90 is 3mm-20mm respectively.

[0188] Along the height direction of the square battery cell 90, the size of the thermal expansion material 631 is smaller than the size of the square battery cell 90, and the distance between the two sides of the thermal expansion material 631 and the two sides of the square battery cell 90 is 3mm to 13mm.

[0189] As an example, along the length of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 8 mm relative to the two sides of the square battery cell 90. Along the height of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 10 mm relative to the two side edges of the square battery cell 90. Along the thickness of the square battery cell 90, the size of the thermal expansion material 631 is 6 mm.

[0190] As an example, the coefficient of linear expansion of the expansion alloy is 23.2 × 10^-6 / ℃.

[0191] In this embodiment, by setting the dimensions of the thermal expansion material 631 along the length, width, and thickness of the square battery cell 90, as well as the position and linear expansion coefficient of the thermal expansion material 631, within a reasonable range, the thermal expansion material 631 can effectively apply pressure to the square battery cell 90 during expansion. Moreover, the pressure application position avoids the corners and edges of the square battery cell 90, which can reduce the risk of deformation and breakage of the square battery cell 90 caused by stress concentration at the corners and edges of the square battery cell 90 during pressure application.

[0192] It should be understood that, in the embodiments of this application, the edges on the largest surface of the square battery cell 90 include the long side and the height side of the square battery cell 90. The direction along the long side of the square battery cell 90 is the length direction of the battery cell 90, and the direction along the height side of the square battery cell 90 is the height direction of the square battery cell 90. For example, the electrode terminals of the square battery cell 90 are disposed on the top wall of the square battery cell 90, and the direction perpendicular to the inner and outer surfaces of the top wall is the height direction of the square battery cell 90.

[0193] The thickness direction of the square battery cell 90 is perpendicular to the length and height directions of the square battery cell 90.

[0194] In some embodiments, if the group margin of the square battery cell 90 is less than or equal to 92%, the linear expansion coefficient of the thermal expansion material 631 is 16×10^-6 / ℃~32×10^-6 / ℃; if the group margin of the square battery cell 90 is greater than 92% and less than or equal to 98%, the linear expansion coefficient of the thermal expansion material 631 is 32×10^-6 / ℃~50×10^-6 / ℃.

[0195] The group margin of the square battery cell 90 can be understood as the ratio of the dimension of the square battery cell 90 along its thickness direction to the dimension of its casing 92 along its thickness direction. Generally speaking, when the group margin is large, less pressure is needed to apply pressure to the electrode components (usually including positive electrode, negative electrode and separator, etc.) in the square battery cell 90, and the linear expansion coefficient of the thermal expansion material 631 can be relatively small; conversely, more pressure is needed to apply pressure to the electrode components 91 in the square battery cell 90, and the linear expansion coefficient of the thermal expansion material 631 is relatively large.

[0196] In this embodiment, by selecting a thermal expansion material 631 with a suitable coefficient of linear expansion based on the group margin of the square battery cell 90, pressure can be reasonably applied to the square battery cell 90 so as to reasonably apply pressure to the electrode assembly in the square battery cell 90.

[0197] In some embodiments, when the dimension of the square battery cell 90 along the thickness direction of the square battery cell 90 is less than or equal to 40 mm, the thermal expansion material 631 satisfies at least one of the following:

[0198] Along the length of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 3mm to 8mm relative to the two sides of the square battery cell 90.

[0199] Along the height direction of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 3mm to 8mm relative to the two sides of the square battery cell 90.

[0200] Along the thickness direction of the square battery cell 90, the size range of the thermal expansion material 631 is 2mm to 4mm.

[0201] As an example, when the size of the square battery cell 90 along the thickness direction of the battery is 36mm, along the length direction of the square battery cell 90, the two sides of the thermal expansion material 631 are each 5mm smaller than the two sides of the square battery cell 90; along the height direction of the square battery cell 90, the two sides of the thermal expansion material 631 are each 5mm smaller than the two sides of the square battery cell 90; and along the thickness direction of the square battery cell 90, the size of the thermal expansion material 631 is 3mm.

[0202] like Figure 14 As shown, the square battery cell 90 includes an electrode assembly 91 and a housing 92.

[0203] The electrode assembly 91 includes two corner regions 911 and two flat regions 912. The electrode assembly 91 is housed within the housing 92, and the flat regions 912 form the two largest surfaces of the battery cell. When pressure is applied to the battery cell, it needs to be applied to the flat regions 912 of the electrode assembly 91.

[0204] For a square battery cell 90 with a relatively small thickness, the size of its corner area 911 is relatively small. Therefore, along the length of the square battery cell 90, the indentation of the two sides of the thermal expansion material 631 relative to the two sides of the square battery cell 90 is relatively small. Thus, when the square battery cell 90 is heated, the thermal expansion material 631 can effectively heat the flat area 912 of the square battery cell 90.

[0205] For a square battery cell 90 with a relatively small thickness, the gap between the two sides of the electrode assembly 91 and the two sides of the casing 92 of the square battery cell 90 is relatively smaller along the height direction of the square battery cell 90. Therefore, the indentation of the two sides of the thermal expansion material 631 relative to the two sides of the square battery cell 90 is relatively small along the height direction of the square battery cell 90. Thus, when the square battery cell 90 is heated, the thermal expansion material 631 can effectively heat the flat area 912 of the battery cell.

[0206] For a square battery cell 90 with a relatively small thickness, the gap between the two sides of the electrode assembly 91 and the two sides of the housing 92 of the square battery cell 90 is relatively small along the thickness direction of the square battery cell 90. Therefore, the size of the thermal expansion material 631 is relatively small along the thickness direction of the square battery cell 90, so that the thermal expansion material 631 can effectively apply pressure to the square battery cell 90 when the square battery cell 90 is heated.

[0207] In some embodiments, when the dimension of the square battery cell 90 along the thickness direction of the square battery cell 90 is greater than 40 mm and less than or equal to 90 mm, the thermal expansion material 631 satisfies at least one of the following:

[0208] Along the length of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 12mm to 18mm relative to the two sides of the square battery cell 90.

[0209] Along the height direction of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 8mm to 12mm relative to the two sides of the square battery cell 90.

[0210] Along the thickness direction of the square battery cell 90, the size range of the thermal expansion material 631 is 4mm to 7mm.

[0211] As an example, when the size of the square battery cell 90 along the thickness direction of the square battery cell 90 is 60mm, along the length direction of the square battery cell 90, the two sides of the thermal expansion material 631 are each 15mm smaller than the two sides of the square battery cell 90; along the height direction of the square battery cell 90, the two sides of the thermal expansion material 631 are each 10mm smaller than the two sides of the square battery cell 90; and along the thickness direction of the square battery cell 90, the size of the thermal expansion material 631 is 5mm.

[0212] For a square battery cell 90 with a relatively large thickness, the size of its corner area 911 is relatively large. Therefore, along the length of the square battery cell 90, the indentation of the two sides of the thermal expansion material 631 relative to the two sides of the square battery cell 90 is relatively large. Thus, when the square battery cell 90 is heated, the thermal expansion material 631 can effectively apply pressure to the flat area 912 of the square battery cell 90.

[0213] For a square battery cell 90 with a relatively large thickness, the gap between the two sides of the electrode assembly 91 and the two sides of the casing 92 of the square battery cell 90 is relatively large along the height direction of the square battery cell 90. Therefore, the indentation of the two sides of the thermal expansion material 631 relative to the two sides of the square battery cell 90 is relatively large along the height direction of the square battery cell 90. This allows the thermal expansion material 631 to effectively apply pressure to the flat area 912 of the square battery cell 90 when the square battery cell 90 is heated.

[0214] For a square battery cell 90 with a relatively large thickness, the gap between the two sides of the electrode assembly 91 and the two sides of the casing 92 of the square battery cell 90 is relatively large along the thickness direction of the square battery cell 90. Therefore, the size of the thermal expansion material 631 is relatively large along the thickness direction of the square battery cell 90, so that the thermal expansion material 631 can effectively apply pressure to the square battery cell 90 when the square battery cell 90 is heated.

[0215] In some embodiments, such as Figure 15 As shown, the thermal expansion side plate 630 also includes an elastic material 632, which is disposed on the side of the thermal expansion material 631 close to the square battery cell 90 along the thickness direction of the square battery cell 90.

[0216] When the battery cell 90 is placed in the receiving position 620, the thermal expansion material 631 includes a side close to the battery cell 90 and a side away from the battery cell 90 along the thickness direction of the square battery cell 90. The elastic material 632 is disposed on the side close to the square battery cell 90 along the thickness direction of the square battery cell 90. That is, the elastic material 632 is spaced between the square battery cell 90 and the thermal expansion material 631.

[0217] For example, the elastic material 632 can be bonded to the thermal expansion material 631 along the thickness direction of the square battery cell 90 on one side close to the square battery cell 90.

[0218] In this embodiment of the application, by providing an elastic material 632 on the thermal expansion side plate 630, the elastic material 632 can directly contact the square battery cell 90, which can reduce the damage to the outer shell of the square battery cell 90 when the square battery cell 90 is placed in the housing position 620 for heating.

[0219] In some embodiments, the elastic material 632 satisfies at least one of the following:

[0220] like Figure 15 As shown, along the length of the square battery cell 90, the dimensions of the indentation of the two sides of the elastic material 632 relative to the two sides of the square battery cell 90 are the same as the dimensions of the indentation of the two sides of the thermal expansion material 631 relative to the two sides of the square battery cell 90.

[0221] like Figure 15 As shown, along the height direction of the square battery cell 90, the dimensions of the indentation of the two sides of the elastic material 632 relative to the two sides of the square battery cell 90 are the same as the dimensions of the indentation of the two sides of the thermal expansion material 631 relative to the two sides of the square battery cell 90.

[0222] like Figure 15 As shown, along the thickness direction of the square battery cell 90, the size range of the elastic material 632 is 2mm to 13mm;

[0223] Elastic material 632 includes at least one of silicone or rubber.

[0224] As an example, along the length of the square battery cell 90, the two sides of the thermal expansion material 631 are recessed by 5 mm relative to the two sides of the square battery cell 90, and the two sides of the elastic material 632 are recessed by 5 mm relative to the two sides of the square battery cell 90. Along the height of the square battery cell 90, the two sides of the thermal expansion material 631 and the two sides of the elastic material 632 are also recessed by 5 mm relative to the two sides of the square battery cell 90. That is, on a plane perpendicular to the thickness direction of the square battery cell 90, the projection of the thermal expansion material 631 and the projection of the elastic material 632 completely coincide.

[0225] As an example, along the thickness direction of the square battery cell 90, the elastic material 632 has a size of 8 mm.

[0226] As an example, the elastic material 632 may include silicone.

[0227] As an example, the Shore hardness of elastic material 632 ranges from 60 to 70 HA / HD.

[0228] As an example, the compression of elastic material 632 under a pressure of 0.2 MPa is ≤4%.

[0229] In this embodiment of the application, by setting the size and position of the elastic material 632 within a reasonable range, the elastic material 632 can effectively reduce the damage to the outer shell of the square battery cell 90 when it is placed in the receiving position 620 for heating.

[0230] In some embodiments, when the dimension of the square battery cell 90 along the thickness direction of the square battery cell 90 is less than or equal to 40 mm, the dimension of the elastic material 632 along the thickness direction of the square battery cell 90 ranges from 3 mm to 8 mm.

[0231] Alternatively, if the dimension of the square battery cell 90 along the thickness direction is greater than 40 mm and less than or equal to 90 mm, the dimension of the elastic material 632 along the thickness direction of the square battery cell 90 is in the range of 8 mm to 12 mm.

[0232] As an example, when the dimension of the square battery cell 90 along the thickness direction of the square battery cell 90 is 36 mm, the dimension of the elastic material 632 along the thickness direction of the square battery cell 90 is 5 mm.

[0233] As an example, when the dimension of the square battery cell 90 along the thickness direction of the square battery cell 90 is 60 mm, the dimension of the elastic material 632 along the thickness direction of the square battery cell 90 is 10 mm.

[0234] In some embodiments, such as Figure 13 or Figure 15 As shown, the thermal expansion side plate 630 also includes a substrate 633, and the thermal expansion material 631 is disposed on the substrate 633 on the side of the substrate 633 close to the square battery cell 90 along the thickness direction of the square battery cell 90.

[0235] As an example, when the square battery cell 90 is placed in the receiving position 620, the substrate 633 includes a side close to the square battery cell 90 and a side away from the square battery cell 90 along the thickness direction of the substrate 633. A thermal expansion material 631 is disposed on the side of the substrate 633 close to the square battery cell 90 along the thickness direction of the substrate 633. For example, the thermal expansion material 631 is disposed between the substrate 633 and the elastic material 632.

[0236] As an example, the size of the substrate 633 can be larger than the size of the thermal expansion material 631.

[0237] As an example, the thermal expansion material 631 can be bonded to the side of the substrate 633 near the square battery cell 90 along the thickness direction of the square battery cell 90. Alternatively, the side of the substrate 633 near the square battery cell 90 along the thickness direction of the square battery cell 90 can be open, and the thermal expansion material 631 can be embedded in the opening of the substrate 633.

[0238] As an example, the thermal expansion material 631 can be bonded to the surface of the substrate 633. Alternatively, a groove can be cut into the substrate 633, and then the thermal expansion material 631 can be embedded in the groove.

[0239] As an example, two adjacent square battery cells 90 can share a single substrate 633. That is, thermal expansion material 631 is provided on both sides of the substrate 633 along the thickness direction of the square battery cell 90. After the thermal expansion material 631 is provided, elastic material 632 is further provided on both sides of the substrate 633 along the thickness direction of the square battery cell 90.

[0240] In this embodiment of the application, by providing thermal expansion material 631 on the substrate 633, it is convenient to flexibly adjust the size between adjacent thermal expansion side plates 630 along the thickness direction of the square battery cell 90, which can be applied to the heating of different models of square battery cells 90.

[0241] In some embodiments, without heating, the thermal expansion side plate 630 and the square battery cell 90 are interference-fitted along the thickness direction of the square battery cell 90.

[0242] As an example, along the thickness direction of the square battery cell 90, the size of the square battery cell 90 is slightly larger than the size between adjacent thermal expansion side plates 630. The square battery cell 90 can be placed on the receiving position 620 by applying pressure to the elastic material 632.

[0243] In this embodiment, by interfering with the thermal expansion side plate 630 and the square battery cell 90 along the thickness direction of the square battery cell 90, the extrusion force of the elastic material 632 on the square battery cell 90 can fix the square battery cell 90 on the receiving position 620, thereby reducing the possibility of the square battery cell 90 shaking in the receiving space 540.

[0244] In some embodiments, multiple openings may be provided in areas of the substrate 633 where the thermal expansion material 631 is not disposed, to facilitate the flow of hot air. For example, the opening diameter may be 4mm-6mm.

[0245] In some embodiments, the receiving position 620 of the tray 60 and the substrate 633 on the thermal expansion side plate may include a metal material with a thermal conductivity greater than or equal to 400 W / m*K.

[0246] In some embodiments, such as Figure 16 As shown, the heating device 10 also includes a control module 70, which is connected to the ventilation valve 5132 to control the opening degree of the ventilation valve 5132.

[0247] As an example, the opening degree of each ventilation valve 5132 can be adjusted individually. Alternatively, the opening degree of each row or column of ventilation valves 5132 can be adjusted individually.

[0248] The opening degree of ventilation valve 5132 can refer to the angle at which ventilation valve 5132 is opened. The larger the angle (between 0° and 90°) of ventilation valve 5132 relative to airflow regulating plate 212, the larger the opening degree of ventilation valve 5132.

[0249] In this embodiment, the control module 70 is connected to the ventilation valve 5132 to facilitate the control and adjustment of the opening degree of the ventilation valve 5132.

[0250] In some embodiments, the heating device 10 further includes a temperature monitoring device (not shown in the figure), disposed on the object being heated, for monitoring the temperature of the object being heated.

[0251] As an example, a temperature detection device is installed on the heated object supported by each support component 50 to monitor the temperature of the heated object supported by each support component 50.

[0252] As an example, the temperature monitoring device is connected to the control module 70 to transmit the temperature of the heated object monitored by the temperature monitoring device to the control module 70, so that the control module 70 adjusts the opening of the ventilation valve 5132 based on the temperature of the heated object.

[0253] As an example, a temperature monitoring device, such as a temperature sensor, can be fixed on the tray 60, and the temperature monitoring end of the temperature monitoring device is in contact with the object being heated.

[0254] The method embodiment below describes in detail how the control device 70 adjusts the opening degree of the ventilation valve 5132 on the second support assembly 52 based on the temperature of the heated object, and will not be repeated here.

[0255] In this embodiment, a temperature detection device is set to monitor the temperature of the object being heated, so that the opening degree of the ventilation valve 5132 on the support assembly 50 can be adjusted according to the temperature of the object being heated.

[0256] In some embodiments, the heating device 10 further includes a heating source, a hot air passage, and an air supply mechanism.

[0257] One end of the hot air duct is connected to the hot air inlet 30, and the other end is connected to the hot air outlet 40. An air supply mechanism, such as a blower, is installed in the hot air duct, which can send the hot air heated by the heating source along the hot air duct to the hot air inlet 30. After heating the object being heated, the hot air flows back to the hot air duct through the hot air outlet, thus realizing the circulation of hot air.

[0258] As an example, all or some of the cavities 20 may share the same heating source, hot air passage and air supply mechanism, or each cavity 20 may be provided with a separate heating source, hot air passage and air supply mechanism.

[0259] The heating device 10 of the embodiments of this application has been described in detail above. The following will be combined with... Figure 17 and Figure 18 The heating method described in the embodiments of this application is applicable to the following method embodiments, and the technical features described in the above-described apparatus embodiments are applicable to the following method embodiments.

[0260] Figure 17 This is a schematic flowchart of the heating method provided in the embodiments of this application.

[0261] The heating method is applicable to heating devices including at least one cavity, a hot air inlet, and a hot air outlet. The cavity contains a plurality of support assemblies arranged at intervals along a first direction. Each support assembly includes at least one first support assembly and one second support assembly. Both the first and second support assemblies include a support portion. The first support assembly further includes an airflow regulating portion for supporting the object being heated or as a tray placed on the object. The airflow regulating portion has a first hole with an adjustable ventilation valve. The first support assembly is located below the second support assembly. The hot air inlet is located on the wall of the cavity and below the plurality of support assemblies, while the hot air outlet is located on the wall of the cavity and above the plurality of support assemblies. This heating method is applicable to the above-mentioned... Figures 1 to 16 In the heating device shown.

[0262] 1710, Obtain the temperature of the heated object supported on multiple first support components.

[0263] Hot air blows from bottom to top, passing sequentially through at least one first support component and a second support component arranged from bottom to top.

[0264] As an example, the temperature of the heated object supported by the first support component is obtained by monitoring the temperature detection device.

[0265] 1720, based on the temperature of the heated object supported on the multiple first support components, control the opening degree of the ventilation valves on the multiple first support components.

[0266] As an example, when the temperature of the object being heated on the first support assembly is lower than the target heating temperature, the opening of the ventilation valve can be controlled to a very small degree, allowing more hot air to flow to the object being heated supported by the first support assembly, thereby rapidly heating the object. As the temperature of the object being heated on the first support assembly continues to rise, the opening of the ventilation valve can be gradually reduced, allowing hot air to flow quickly from the ventilation valve of the first support assembly to the object being heated supported by the upper support assembly, such as the second support assembly, thus achieving rapid heating of the object being heated supported by the support assembly above the first support assembly.

[0267] In this embodiment, the opening of the ventilation valve on each first support component can be adjusted based on the temperature of the object being heated supported on each first support component, thereby adjusting the hot air flow rate to the object being heated supported on each first support component and the hot air flow rate to the object being heated supported by the support component above each first support component, so as to achieve rapid heating of the object being heated.

[0268] Figure 18 This is a schematic flowchart of the heating method provided in an embodiment of this application.

[0269] The heating method is applicable to heating devices including at least one cavity, a hot air inlet, and a hot air outlet. The cavity contains a plurality of support assemblies arranged at intervals along a first direction. Each support assembly includes at least one first support assembly and one second support assembly. Both the first and second support assemblies include a support portion. The first support assembly further includes an airflow regulating portion for supporting the object being heated or as a tray placed on the object. The airflow regulating portion has a first hole with an adjustable ventilation valve. The first support assembly is located below the second support assembly. The hot air inlet is located on the wall of the cavity and below the plurality of support assemblies, while the hot air outlet is located on the wall of the cavity and above the plurality of support assemblies. This heating method is applicable to the above-mentioned... Figures 1 to 16 In the heating device shown.

[0270] 1810, obtain the temperature of the heated object supported by multiple first support components.

[0271] 1820, when the temperature of the heated object supported by the first support component at the bottom is lower than the preset temperature, the opening degree of the ventilation valves of the multiple first support components is controlled to be less than or equal to the preset opening degree.

[0272] The preset temperature is lower than the target heating temperature of the object being heated, and the difference between the target heating temperature and the preset temperature is less than or equal to the target threshold, or the preset temperature is equal to the target heating temperature.

[0273] As an example, the preset opening can be 0°. Hot air cannot flow upwards through the ventilation valve on the first support assembly.

[0274] As another example, the preset opening can be 10°.

[0275] In other words, when the temperature of the object being heated supported by the lowest first support component is lower than the preset temperature (target heating temperature or a temperature slightly lower than the target heating temperature), the opening degree of the ventilation valves on all the first support components can be controlled to be lower than the preset opening degree, such as controlling the opening degree of the ventilation valves on all the first support components to be 0°.

[0276] In this embodiment, when the temperature of the object being heated supported by the lowest first support component is less than or equal to a preset temperature, the opening degree of the ventilation valves on the multiple first support components is controlled to be less than or equal to the preset opening degree. Since the opening degree of the ventilation valves on the lowest first support component is relatively small, more hot air flows to the object being heated supported by the lowest first support component, thereby enabling the temperature of the object being heated supported by the lowest second support component to rise rapidly.

[0277] On the other hand, the ventilation valves of the other first support components also have relatively small openings. When hot air flows through each first support component, it is blocked by the ventilation valve on each first support component. Therefore, the hot air can flow more towards the heating object supported by each first support component, thereby causing the heating object supported by each first support component to heat up quickly.

[0278] In addition, the second support component may not be equipped with a ventilation valve, so that more hot air flows to the object being heated supported by the second support component, thereby allowing the object being heated supported by the second support component to heat up quickly.

[0279] In some embodiments, the opening degree of the ventilation valves on the plurality of first support components is controlled to a minimum opening value.

[0280] As an example, the minimum opening value is 0°, which means the ventilation valve is closed and hot air cannot pass through the ventilation valve.

[0281] In this embodiment, when the temperature of the object being heated supported by the lowest second support component is less than or equal to a preset temperature, the opening degree of the ventilation valves of the multiple first support components can be adjusted to the minimum value, thereby minimizing the hot air flow through the ventilation valve of each first support component and maximizing the hot air flow to the object being heated supported by each first support component, so as to facilitate rapid heating of the object being heated supported by each first support component.

[0282] 1830, if the temperature of the heated object supported by the i-th first support component is greater than or equal to the preset temperature, increase the opening degree of the ventilation valve of the i-th first support component.

[0283] The preset temperature is lower than the target heating temperature of the object being heated, and the difference between the target heating temperature and the preset temperature is less than or equal to the target threshold, or the preset temperature is equal to the target heating temperature.

[0284] Increasing the opening degree of the ventilation valve of the i-th first support component can also be understood as controlling the opening degree of the i-th first support component to be greater than the preset opening degree. As an example, if the preset opening degree is 10°, the opening degree of the ventilation valve can be increased to 80°.

[0285] In step 1620, the opening degree of the ventilation valves of the multiple first support components is controlled to be less than or equal to a preset opening degree. Generally speaking, the temperature of the heated object supported by the lower support component is higher, and the temperature of the heated object supported by the upper support component is lower. Therefore, the temperature of the heated object supported by the lowermost first support component rises to the preset temperature first.

[0286] As an example, the following description uses two first support components as an example. When the temperature of the object being heated supported by the lowest first support component is greater than or equal to a preset temperature, the opening of the ventilation valve of the lowest first support component can be increased. This allows hot air to quickly flow through the ventilation valve on the lowest first support component to the object being heated supported by the first support component above it, thereby rapidly raising the temperature of the object being heated supported by the first support component above it to the target heating temperature.

[0287] If the temperature of the object being heated supported by the first support component is greater than or equal to the preset temperature, the opening of the ventilation valve of the first support component can be increased, so that hot air can quickly pass through the ventilation valve on the first support component and flow to the object being heated supported by the second support component at the top, thereby rapidly raising the temperature of the object being heated supported by the second support component at the top to the target heating temperature.

[0288] In this embodiment, the i-th first support component is any one of the plurality of first support components. When the object being heated supported by a first support component is heated to a preset temperature, the opening of the ventilation valve of that first support component will be increased. As shown above, the object being heated supported by the first support component that is closer to the bottom will be heated to the preset temperature first.

[0289] As an example, if the temperature of the object being heated supported by the lowest supporting component is close to the target heating temperature but not yet reached, the opening of the ventilation valve of the lowest supporting component is increased. Since the object being heated does not require much heat to reach the target heating temperature, increasing the opening of the ventilation valve allows more hot air to flow through the ventilation valve and onto the object being heated supported by the upper supporting components. This allows some hot air to flow towards the object being heated supported by the lowest supporting component, thus raising the temperature of the object being heated to the target heating temperature. Simultaneously, the lowest supporting component... The object being heated, supported by the support component above the component, heats up rapidly. This process continues until the opening of the ventilation valve of the topmost first support component is increased, allowing more hot air to flow through the ventilation valve of the topmost first support component to the topmost second support component. This allows more hot air to flow through the ventilation valve of the topmost first support component to the object being heated supported by the topmost second support component, while some hot air flows to the object being heated supported by the bottommost first support component, thus achieving rapid heating of the object within the cavity.

[0290] In this embodiment, when the temperature of the heated object supported by the i-th first support component reaches the target heating temperature, the opening of the ventilation valve on the i-th first support component can be increased so that hot air can quickly pass through the ventilation valve on the i-th first support component and flow to the heated object supported by the support component above the i-th first support component, thereby rapidly raising the temperature of the heated object supported by the support component above to the target heating temperature. This process is repeated to achieve rapid heating of the heated object in the cavity.

[0291] In some embodiments, the opening degree of the ventilation valve on the i-th first support component is increased to the maximum opening degree value.

[0292] As an example, when the temperature of the heated object supported by the i-th first support component is greater than or equal to the preset temperature, the opening of the ventilation valve can be increased to the maximum opening value of 90°.

[0293] In this embodiment, when the temperature of the object being heated supported by the i-th first support component gradually rises to or approaches the target heating temperature, the opening of the ventilation valve on the i-th first support component can be increased to the maximum. This minimizes the flow of hot air to the object being heated supported by the i-th first support component, allowing the hot air to flow more quickly from the ventilation valve on the i-th first support component to the object being heated supported by the upper support component, thereby achieving rapid heating of the object being heated within the cavity.

[0294] It should be understood that the content of the heating device in the method embodiments can be referred to Figures 1 to 16 For the sake of brevity, the relevant descriptions in the original document will not be repeated here.

[0295] This application also provides a heating device, which includes a processor and a memory, wherein the memory is used to store instructions, and the processor is used to read the instructions and execute the methods of the aforementioned embodiments of this application based on the instructions.

[0296] The memory can be a separate device independent of the processor, or it can be integrated into the processor.

[0297] Optionally, the heating device may also include a transceiver, which the processor can control to communicate with other devices. Specifically, it can send information or data to other devices, or receive information or data sent by other devices.

[0298] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0299] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0300] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0301] This application also provides a computer-readable storage medium for storing computer programs.

[0302] Optionally, the computer-readable storage medium can be applied to the heating device in the embodiments of this application, and when the computer program is run on a computer, it causes the computer to execute the corresponding processes in the various methods of the embodiments of this application. For the sake of brevity, these will not be described in detail here.

[0303] This application also provides a computer program product, including computer program instructions.

[0304] Optionally, the computer program product can be applied to the heating device in the embodiments of this application, and the computer program instructions, when run on a computer, cause the computer to execute the corresponding processes in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0305] This application also provides a computer program.

[0306] Optionally, the computer program can be applied to the heating device in the embodiments of this application. When the computer program is run on a computer, it causes the computer to execute the corresponding processes in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0307] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0308] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0309] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection involved in the embodiments of this application may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0310] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0311] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0312] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0313] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. 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 heating device, characterized in that, The heating device includes: At least one cavity is provided in which a plurality of support components are arranged at intervals along a first direction. The plurality of support components include at least one first support component and a second support component. Both the first support component and the second support component include a support portion. The first support component further includes an airflow regulating portion. The support portion is used to support the object to be heated. The airflow regulating portion is provided with a first hole. A ventilation valve is provided in the first hole. The opening degree of the ventilation valve is adjustable. The first support component is located below the second support component. A hot air inlet is disposed on the wall of the cavity and located below the plurality of support components; A hot air outlet is located on the wall of the cavity and above the plurality of support components.

2. The heating device according to claim 1, characterized in that, Both the first support assembly and the second support assembly include two support plates arranged opposite each other along a second direction. The two support plates of the first support assembly and the two support plates of the second support assembly are both disposed on the side wall of the cavity, and the second direction is perpendicular to the first direction.

3. The heating device according to claim 2, characterized in that, Both support plates of the first support assembly include the support portion, and both support plates of the second support assembly include the support portion.

4. The heating device according to claim 3, characterized in that, One of the two support plates of the first support assembly further includes the airflow regulating part, and the support part on one of the support plates of the first support assembly is located inside the airflow regulating part on one of the support plates of the first support assembly along the second direction.

5. The heating device according to claim 3 or 4, characterized in that, The other support plate of the first support assembly further includes the airflow regulating part, and the support part on the other support plate of the first support assembly is located inside the airflow regulating part on the other support plate of the first support assembly along the second direction.

6. The heating device according to any one of claims 1 to 5, characterized in that, The second support assembly also includes the airflow regulating section.

7. The heating device according to claim 6, characterized in that, One of the two support plates of the second support assembly further includes the airflow regulating part, and the support part on the support plate of the second support assembly is located inside the airflow regulating part on the support plate of the second support assembly along the second direction.

8. The heating device according to claim 6 or 7, characterized in that, The other support plate of the second support assembly further includes the airflow regulating part, and the support part on the other support plate of the second support assembly is located inside the airflow regulating part on the other support plate of the second support assembly along the second direction.

9. The heating device according to any one of claims 4 to 8, characterized in that, The cavity is also provided with a tray, which includes a receiving position and two support positions located on both sides of the receiving position along the second direction. The receiving position is used to receive the heated object, and the two support positions are respectively supported by the support portions of the two support plates in the support assembly.

10. The heating device according to claim 9, characterized in that, The receiving position is provided with a plurality of second holes extending through the first direction.

11. The heating device according to any one of claims 1 to 10, characterized in that, The object being heated includes a single battery cell.

12. The heating device according to any one of claims 9 to 11, characterized in that, The receiving position is provided with multiple thermal expansion side plates. When the square battery cell is placed in the receiving position, both of the largest faces of the square battery cell are opposite to the thermal expansion side plates, and the thermal expansion side plates include thermal expansion material so that when the square battery cell is heated, the thermal expansion side plates apply an expansion force to the largest face of the square battery cell. The object being heated includes the square battery cell.

13. The heating device according to claim 12, characterized in that, The thermal expansion material satisfies at least one of the following: Along the length of the square battery cell, the two sides of the thermal expansion material are recessed by 3mm to 20mm relative to the two sides of the square battery cell, respectively. Along the height direction of the square battery cell, the two sides of the thermal expansion material are recessed by 3mm to 13mm relative to the two sides of the square battery cell, respectively. Along the thickness direction of the square battery cell, the size range of the thermal expansion material is 1mm to 8mm; The thermal expansion material includes an expansion alloy, and the linear expansion coefficient of the expansion alloy is in the range of 12×10^-6 / ℃ to 55×10^-6 / ℃.

14. The heating device according to claim 13, characterized in that, When the dimension of the square battery cell along its thickness direction is less than or equal to 40 mm, the thermal expansion material satisfies at least one of the following: Along the length of the square battery cell, the two sides of the thermal expansion material are recessed by 3mm to 8mm relative to the two sides of the square battery cell. Along the height direction of the square battery cell, the two sides of the thermal expansion material are recessed by 3mm to 8mm relative to the two sides of the square battery cell. Along the thickness direction of the square battery cell, the size range of the thermal expansion material is 2mm to 4mm.

15. The heating device according to claim 13 or 14, characterized in that, When the dimension of the square battery cell along its thickness direction is greater than 40 mm and less than or equal to 90 mm, the thermal expansion material satisfies at least one of the following: Along the length of the square battery cell, the two sides of the thermal expansion material are recessed by 12mm to 18mm relative to the two sides of the square battery cell. Along the height direction of the square battery cell, the two sides of the thermal expansion material are recessed by 8mm to 12mm relative to the two sides of the square battery cell. Along the thickness direction of the square battery cell, the size range of the thermal expansion material is 4mm to 7mm.

16. The heating device according to any one of claims 13 to 15, characterized in that, When the group margin of the square battery cell is less than or equal to 92%, the linear expansion coefficient of the thermal expansion material ranges from 16 × 10⁻⁶ / ℃ to 32 × 10⁻⁶ / ℃; or, When the group margin of the square battery cell is greater than 92% and less than or equal to 98%, the linear expansion coefficient of the thermal expansion material ranges from 32×10^-6 / ℃ to 50×10^-6 / ℃.

17. The heating device according to any one of claims 12 to 16, characterized in that, The thermal expansion side plate also includes an elastic material, which is disposed on the side of the thermal expansion material close to the square battery cell along the thickness direction of the square battery cell.

18. The heating device according to claim 17, characterized in that, The elastic material satisfies at least one of the following: Along the length of the square battery cell, the dimension by which the two sides of the elastic material are recessed relative to the two sides of the square battery cell is the same as the dimension by which the two sides of the thermal expansion material are recessed relative to the two sides of the square battery cell. Along the height direction of the square battery cell, the dimension by which the two sides of the elastic material are recessed relative to the two sides of the square battery cell is the same as the dimension by which the two sides of the thermal expansion material are recessed relative to the two sides of the square battery cell. Along the thickness direction of the square battery cell, the size range of the elastic material is 2mm to 13mm; The elastic material includes at least one of silicone or rubber.

19. The heating device according to claim 18, characterized in that, When the dimension of the square battery cell along its thickness direction is less than or equal to 40 mm, the dimension of the elastic material along the thickness direction of the square battery cell ranges from 3 mm to 8 mm, or... When the dimension of the square battery cell along the thickness direction is greater than 40 mm and less than or equal to 90 mm, the dimension of the elastic material along the thickness direction of the square battery cell ranges from 8 mm to 12 mm.

20. The heating device according to any one of claims 12 to 19, characterized in that, The thermal expansion side plate also includes a substrate, which is disposed on the side of the thermal expansion material away from the square battery cell along the thickness direction of the square battery cell.

21. The heating device according to any one of claims 12 to 20, characterized in that, Without heating, the thermal expansion side plate and the square battery cell are interference-fitted along the thickness direction of the square battery cell.

22. The heating device according to any one of claims 1 to 21, characterized in that, The heating device also includes: A temperature monitoring device is installed on the object being heated to monitor the temperature of the object being heated.

23. A heating method, characterized in that, The heating method is applicable to a heating device including at least one cavity, a hot air inlet, and a hot air outlet. The cavity is provided with a plurality of support assemblies arranged at intervals along a first direction. Each of the plurality of support assemblies includes at least one first support assembly and one second support assembly. Both the first and second support assemblies include a support portion. The first support assembly further includes an airflow regulating portion. The support portion is used to support a heated object or a tray placed on the heated object. The airflow regulating portion has a first hole with a ventilation valve. The opening degree of the ventilation valve is adjustable. The first support assembly is located below the second support assembly. The hot air inlet is located on the wall of the cavity and below the plurality of support assemblies. The hot air outlet is located on the wall of the cavity and above the plurality of support assemblies. The heating method includes: Obtain the temperature of the heated object supported on the plurality of first support components; The opening degree of the ventilation valves on the plurality of first support assemblies is controlled according to the temperature of the heated object supported on the plurality of first support assemblies.

24. The heating method according to claim 23, characterized in that, The step of controlling the opening degree of the ventilation valves on the plurality of first support assemblies based on the temperature of the heated object supported on the plurality of first support assemblies includes: When the temperature of the heated object supported by the first support component at the bottom is lower than a preset temperature, the opening degree of the ventilation valve of the plurality of first support components is controlled to be less than or equal to a preset opening degree, the preset temperature is less than the target heating temperature of the heated object and the difference between the target heating temperature and the preset temperature is less than or equal to a target threshold, or the preset temperature is equal to the target heating temperature.

25. The heating method according to claim 24, characterized in that, The control of the opening degree of the ventilation valve of the plurality of first support components to be less than or equal to a preset opening degree includes: The opening degree of the ventilation valves on the plurality of first support assemblies is controlled to the minimum opening value.

26. The heating method according to any one of claims 23 to 25, characterized in that, The step of controlling the opening degree of the ventilation valves on the plurality of first support assemblies based on the temperature of the heated object supported on the plurality of first support assemblies includes: If the temperature of the heated object supported by the i-th first support component is greater than or equal to a preset temperature, the opening of the ventilation valve of the i-th first support component is increased. The preset temperature is less than the target heating temperature of the heated object and the difference between the target heating temperature and the preset temperature is less than or equal to a target threshold, or the preset temperature is equal to the target heating temperature.

27. The heating method according to claim 26, characterized in that, Increasing the opening of the ventilation valve on the i-th first support assembly includes: Increase the opening degree of the ventilation valve on the i-th first support component to the maximum opening degree value.

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