Heating device, coating oven equipment and battery production system

Abstract

The utility model relates to a heating device, coating oven equipment and a battery production system, and the heating device comprises a heating assembly which is arranged towards a pole piece; the heat conduction assembly is provided with a cold surface and a hot surface which conduct heat with each other, and the cold surface is attached to one side, opposite to the pole piece, of the heating assembly; the cooling assembly is attached to the hot face, and a cooling channel used for containing cooling liquid is formed in the cooling assembly. The heating assembly is arranged towards the pole piece, the pole piece coated with slurry can be heated and dried, meanwhile, heat generated by the heating assembly can be conducted out in time through the heat conduction assembly, then heat exchange is conducted in time through the cooling assembly, the heating assembly is cooled, and the heat dissipation efficiency is improved. The drying efficiency and the drying quality of the pole piece can be improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a heating device, a coating oven equipment, and a battery production system. Background Technology

[0002] Electrodes are an important structure in battery cells. In the production process of electrodes, a slurry needs to be coated on the surface of current collectors such as copper foil or aluminum foil. Then, the electrode coated with slurry is heated and dried, and then cut to finally form an electrode that can be used to assemble battery cells.

[0003] However, in the current heating device, the heat generated by the heating device itself is not easy to be discharged in time during the heating and drying process of the electrode sheet, which affects the efficiency and quality of heating and drying. Utility Model Content

[0004] Therefore, it is necessary to address the problem that the heat generated by the heating device itself is not easily dissipated in a timely manner during the heating and drying process of the electrode sheet, which affects the efficiency and quality of heating and drying. In this regard, a heating device, coating oven equipment and battery production system should be provided.

[0005] In a first aspect, this application provides a heating device for heating and drying an electrode sheet. The heating device includes a heating component, a heat-conducting component, and a cooling component. The heating component is disposed facing the electrode sheet. The heat-conducting component has a cold surface and a hot surface that conduct heat to each other. The cold surface is attached to the side of the heating component facing away from the electrode sheet. The cooling component is attached to the hot surface and has a cooling channel inside for containing coolant.

[0006] Thus, through the above structure, the heating component can heat and dry the electrode sheet coated with slurry. At the same time, the heat generated by the heating component can be promptly discharged through the heat conduction component and then exchanged with the cooling component to cool down the heating component and improve heat dissipation efficiency. In this way, the drying efficiency and drying quality of the electrode sheet can be improved.

[0007] In some embodiments, the thermally conductive component includes a thermoelectric cooler having a cold side and a hot side, the cold side of the thermoelectric cooler being attached to the heating component and the hot side of the thermoelectric cooler being attached to the cooling component.

[0008] In this way, the semiconductor cooler can be controlled by the circuit as needed to better regulate the heat conduction and achieve rapid and efficient heat dissipation of the heating components.

[0009] In some embodiments, the cooling channel includes a plurality of sub-channels, each sub-channel being disposed through a first direction, and the sub-channels being arranged sequentially along a second direction;

[0010] The first direction intersects the second direction, and both the first and second directions are parallel to the hot surface.

[0011] With the above structure, the coolant can enter each sub-channel along the first direction and flow within the corresponding sub-channel. At the same time, the sub-channels are arranged sequentially along the second direction, allowing the coolant to be distributed more evenly within the cooling channels, achieving uniform heat dissipation.

[0012] In some embodiments, the cooling assembly includes a cooling body and a plurality of heat exchange fins. All sub-channels are located inside the cooling body, and a plurality of heat exchange fins are provided inside each sub-channel. The heat exchange fins are spaced apart along a first direction in the corresponding sub-channel.

[0013] The aforementioned structure allows for a more uniform distribution of cooling channels, reducing the probability of temperature unevenness caused by flow field disturbances and achieving uniform heat dissipation. Furthermore, the heat exchange fins further increase the heat exchange area and improve thermal conductivity.

[0014] In some embodiments, the cooling body includes a first cooling section and a second cooling section, wherein the second cooling section is connected to the opposite ends of the first cooling section along a second direction and together with the first cooling section forms a receiving groove;

[0015] The first cooling section and the second cooling section each have sub-channels inside; the heating component and the heat conduction component are both disposed in the receiving tank and are in contact with the inner wall of the receiving tank.

[0016] The above structure can further increase the heat exchange area between the cooling component and the heat conduction component and the heating component, thereby improving the heat exchange efficiency.

[0017] In some embodiments, the heating assembly includes multiple laser elements that are detachably connected and arranged in a matrix to form a laser module.

[0018] Therefore, by splicing multiple laser elements, a laser module that matches the size of the electrode can be formed, thereby better heating and drying the electrode.

[0019] In some embodiments, the laser module includes multiple laser modules that are detachably connected to each other to assemble a heating assembly.

[0020] In this way, the number of laser modules can be adjusted according to the power requirements in the actual drying process, effectively improving drying efficiency and drying quality.

[0021] In some embodiments, the heat-conducting assembly includes a plurality of heat-conducting elements, which are detachably connected and arranged in a matrix; wherein each heat-conducting element is configured in a one-to-one correspondence with each laser element.

[0022] Therefore, the above structure allows for more flexible and accurate adjustment of the temperature of heating components in different areas, thereby achieving precise local temperature control and further improving drying efficiency and quality.

[0023] In some embodiments, each laser element is configured as a vertical-cavity surface-emitting laser. This structure enables uniform heating and drying of the electrode surface, further improving drying efficiency and quality.

[0024] Secondly, this application also provides a coating oven apparatus, including a chamber and a heating device as described above. The chamber has a receiving cavity for conveying electrode sheets; the heating device is disposed in the receiving cavity, and the side surface of the heating component facing away from the heat-conducting component is disposed towards the electrode sheet.

[0025] Thirdly, this application also provides a battery production system, including the coating oven equipment described above.

[0026] The aforementioned heating device, coating oven equipment, and battery production system have heating components positioned towards the electrode sheets, enabling them to heat and dry the coated electrode sheets. Simultaneously, the heat generated by the heating components can be promptly dissipated through the heat conduction components and then exchanged with the cooling components to cool the heating components, thereby improving heat dissipation efficiency. This, in turn, improves the drying efficiency and quality of the electrode sheets. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a heating device according to one or more embodiments.

[0028] Figure 2 This is a side structural schematic diagram of a heating device according to one or more embodiments.

[0029] Figure 3 This is a schematic diagram of a heating device according to one or more embodiments.

[0030] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0031] Figure 5 This is a schematic diagram of the structure of a laser module in a heating device according to one or more embodiments.

[0032] Figure 6 This is a schematic diagram of the structure of a heating component in a heating device according to one or more embodiments.

[0033] Figure 7 This is a schematic diagram of the structure of a heat-conducting component in a heating device according to one or more embodiments.

[0034] Explanation of reference numerals in the attached drawings: 100, heating device; 10, heating component; 20, heat-conducting component; 30, cooling component; 11, laser element; 12, laser module; 21, heat-conducting element; 31, cooling channel; 32, sub-channel; 33, cooling body; 34, heat exchange fins; 35, first cooling section; 36, second cooling section; 37, receiving groove; a, first direction; b, second direction. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and 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.

[0037] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0041] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as other fields. With the continuous expansion of the application areas of battery devices, the market demand is also constantly increasing.

[0042] A battery cell is the smallest unit that makes up a battery device. A battery device may include one or more battery cells, which are connected in series, parallel or mixed to form a whole.

[0043] A battery cell typically includes an electrode assembly, a housing, and a top cover. The housing and top cover together enclose a space where the electrode assembly can be placed and filled with electrolyte to wet the electrode assembly.

[0044] Electrode assemblies typically include a positive electrode, a separator, and a negative electrode. The separator serves to isolate and insulate adjacent positive and negative electrodes. For both the positive and negative electrodes, a paste, such as conductive carbon black, is first coated onto the current collector; this process is also known as gravure coating. Then, a positive electrode active material is coated onto the current collector to form the positive electrode, and a negative electrode active material is coated onto the current collector to form the negative electrode.

[0045] After coating the current collector with the slurry, the electrode sheet needs to be placed in an oven to heat and dry the coated slurry, removing moisture and making the electrode sheet drier and more stable. Further, after drying, the electrode sheet can be slit to the required size for assembly into a single battery cell.

[0046] However, current heating devices, during the heating and drying process of electrodes, suffer from difficulties in timely heat dissipation, affecting the efficiency and quality of the drying process. Under these circumstances, to better dissipate heat, the size of the heating device is usually severely limited; that is, the size of the heating device is relatively small, which also hinders the improvement of drying efficiency.

[0047] Based on the above considerations, in order to solve the problem that the heat generated by the heating device itself is not easily dissipated in a timely manner during the heating and drying process of the electrode sheet, thus affecting the efficiency and quality of heating and drying, one or more embodiments of this application provide a heating device in which the heating component is arranged facing the electrode sheet, enabling the heating and drying of the electrode sheet coated with slurry. Simultaneously, the heat generated by the heating component can be promptly dissipated through a heat-conducting component, and then promptly exchanged through a cooling component to cool the heating component, improving heat dissipation efficiency. This, in turn, improves the drying efficiency and drying quality of the electrode sheet.

[0048] Please refer to the following: Figure 1 and Figure 2 One embodiment of this application provides a heating device 100 for heating and drying an electrode. The heating device 100 includes a heating component 10, a heat-conducting component 20, and a cooling component 30. The heating component 10 is disposed facing the electrode. The heat-conducting component 20 has a cold surface and a hot surface that conduct heat to each other, with the cold surface attached to the side of the heating component 10 facing away from the electrode. The cooling component 30 is attached to the hot surface, and the cooling component 30 has a cooling channel 31 inside for containing coolant.

[0049] It should be noted that the heating device 100 provided in this application can be used, but is not limited to, in the gravure coating process of electrode sheets to heat and dry the electrode sheets after the gravure coating process. Specifically, the heating device 100 includes a heating component 10, a heat-conducting component 20, and a cooling component 30. Among them, the heating component 10 can rapidly heat up the entire electrode sheet to dry it.

[0050] During use, the electrode sheets are typically conveyed to the interior of the coating oven via a conveyor belt and move at a constant speed inside the oven. During this process, a heating element 10 is positioned inside the oven and oriented towards the electrode sheets, allowing the heating element 10 to evenly transfer heat to the electrode sheets for heating and drying.

[0051] Understandably, when the electrode is horizontally arranged in the receiving cavity, the heating component 10 can be arranged above or below the electrode, or simultaneously above and below the electrode, to dry the electrode on one side or both sides. The specific arrangement can be adjusted according to actual needs, which will not be elaborated here.

[0052] Furthermore, during the heating and drying process of the electrode sheet, the heating component 10 itself will generate heat. If the heat cannot be dissipated in time, it will directly affect the drying efficiency and drying quality of the electrode sheet by the heating component 10.

[0053] Based on this, a heat-conducting component 20 is provided. One surface of the heat-conducting component 20 is constructed as a cold surface, and the other surface is constructed as a hot surface, and the cold surface and the hot surface can conduct heat to each other. The cold surface of the heat-conducting component 20 refers to the surface that can absorb heat, thereby lowering the temperature and achieving the cooling function. The hot surface of the heat-conducting component 20 refers to the surface that can release heat, thereby raising the temperature and achieving heat dissipation.

[0054] The cold surface is attached to the surface of the heating component 10, and the hot surface is attached to the surface of the cooling component 30. In this way, the heat generated by the heating component 10 can be smoothly transferred between the cold and hot surfaces of the heat-conducting component 20, and then quickly conducted to the cooling component 30 for heat dissipation.

[0055] In addition, the interior of the cooling component 30 is hollow to form a cooling channel 31, and coolant can be introduced into the cooling channel 31. The flow of coolant in the cooling channel 31 carries away the heat conducted by the heat-conducting component 20, thereby achieving cooling and temperature reduction of the heating component 10.

[0056] Thus, through the above structure, the heating component 10 can heat and dry the electrode sheet coated with slurry. At the same time, the heat generated by the heating component 10 can be promptly discharged through the heat conduction component 20, and then promptly exchanged through the cooling component 30 to cool down the heating component 10 and improve heat dissipation efficiency. In this way, the drying efficiency and drying quality of the electrode sheet can be improved.

[0057] In some embodiments, the heat-conducting component 20 includes a thermoelectric cooler having a cold side and a hot side, the cold side of the thermoelectric cooler being attached to the heating component 10, and the hot side of the thermoelectric cooler being attached to the cooling component 30.

[0058] Specifically, the thermoelectric cooler has a cold surface and a hot surface that conduct heat to each other, and the cold surface of the thermoelectric cooler is attached to the surface of the heating component 10, while the hot surface of the thermoelectric cooler is attached to the surface of the cooling component 30.

[0059] In this way, the semiconductor cooler can be controlled by the circuit as needed to better regulate the heat conduction and achieve rapid and efficient heat dissipation of the heating component 10.

[0060] In some embodiments, the cooling channel 31 includes a plurality of sub-channels 32, each sub-channel 32 being disposed through a first direction a, and the sub-channels 32 being arranged sequentially along a second direction b. The first direction a intersects the second direction b, and both the first direction a and the second direction b are parallel to the hot surface.

[0061] Specifically, the cooling channel 31 includes multiple sub-channels 32, that is, multiple sub-channels 32 are opened inside the cooling assembly 30, wherein each sub-channel 32 is arranged through the first direction a, and the sub-channels 32 are arranged sequentially along the second direction b.

[0062] It should be noted that the electrode is usually laid out in a flat plane during the coating process. In order to correspond with the electrode and to heat and dry all parts of the electrode more comprehensively and evenly, the heating component 10 is also set as a flat plate structure. Correspondingly, the heat conduction component 20 and the cooling component 30 are also set as flat plate structures. The heat conduction component 20 is placed between the heating component 10 and the cooling component 30, and the three are in surface contact with each other to increase the heat conduction and heat dissipation area.

[0063] Thus, both the first direction a and the second direction b are parallel to the hot surface, and the first direction a and the second direction b are perpendicular to each other. That is, the first direction a and the second direction b are the width direction and the length direction of the cooling component 30, respectively.

[0064] With the above structure, the coolant can enter each sub-channel 32 along the first direction a and flow within the corresponding sub-channel 32. At the same time, the sub-channels 32 are arranged sequentially along the second direction b, so that the coolant can be more evenly distributed within the cooling channel 31, achieving uniform heat dissipation.

[0065] like Figure 3 and Figure 4 As shown, in some embodiments, the cooling assembly 30 includes a cooling body 33 and a plurality of heat exchange fins 34. All sub-channels 32 are located inside the cooling body 33. Each sub-channel 32 is provided with a plurality of heat exchange fins 34, and each heat exchange fin 34 is spaced apart along the first direction a in the corresponding sub-channel 32.

[0066] Specifically, the cooling assembly 30 includes a cooling body 33 and multiple heat exchange fins 34. The cooling body 33 is hollow inside, forming all the sub-channels 32. The surface of the cooling body 33 is brought into contact with the hot surface of the heat-conducting assembly 20, allowing the coolant to smoothly carry away the heat on the hot surface, thus achieving heat dissipation.

[0067] Furthermore, each sub-channel 32 is provided with multiple heat exchange fins 34, and the heat exchange fins 34 are spaced apart along the first direction a within the corresponding sub-channel 32. In this way, as the coolant flows within the corresponding sub-channel 32, it needs to pass through each heat exchange fin 34, which increases the heat exchange area and thus improves the heat conduction.

[0068] Understandably, the heat exchange fins 34 can be, but are not limited to, cylindrical or square, and the cylindrical or square heat exchange fins 34 are erected vertically in the corresponding sub-channels 32. When the coolant flows in the corresponding sub-channels 32, it can pass through the gaps between the heat exchange fins 34.

[0069] The above structure makes the distribution of cooling channels 31 more uniform, reducing the probability of temperature unevenness caused by flow field disturbance and achieving uniform heat dissipation. In addition, the heat exchange fins 34 can further increase the heat exchange area and improve the heat conduction.

[0070] Please refer to it again. Figure 2 In some embodiments, the cooling body 33 includes a first cooling section 35 and a second cooling section 36. The second cooling section 36 is connected to the opposite ends of the first cooling section 35 along a second direction b, and together with the first cooling section 35, they enclose a receiving groove 37. Sub-channels 32 are formed inside both the first cooling section 35 and the second cooling section 36. The heating component 10 and the heat-conducting component 20 are both disposed within the receiving groove 37 and are in contact with the inner wall of the receiving groove 37.

[0071] Specifically, the first cooling section 35 is configured as a flat plate, and multiple sub-channels 32 are provided inside the first cooling section 35. Each sub-channel 32 is connected along a first direction a and arranged sequentially along a second direction b. Two second cooling sections 36 can be provided and connected to opposite ends of the first cooling section 35 respectively. The thickness of the second cooling section 36 is greater than that of the first cooling section 35. Sub-channels 32 are also provided inside the second cooling section 36, and the sub-channels 32 are also connected along the first direction a.

[0072] Thus, the first cooling section 35 and the second cooling section 36 can together form a receiving groove 37. The size of the receiving groove 37 matches the size of the heating component 10 and the heat-conducting component 20, allowing the heating component 10 and the heat-conducting component 20, after being attached to each other, to be placed inside the receiving groove 37. At this time, not only does the surface of the heat-conducting component 20 facing away from the heating component 10 fit against the bottom wall of the receiving groove 37, but the sides of the heat-conducting component 20 and the heating component 10 can also fit against the side walls of the receiving groove 37, increasing the heat exchange area.

[0073] The above structure can further increase the heat exchange area between the cooling component 30 and the heat conduction component 20 and the heating component 10, thereby improving the heat exchange efficiency.

[0074] like Figure 5 As shown, in some embodiments, the heating assembly 10 includes a plurality of laser elements 11, which are detachably connected and arranged in a matrix to form a laser module 12.

[0075] Specifically, laser element 11 refers to a single laser. Multiple laser elements 11 are detachably connected and arranged in a matrix so that multiple laser elements 11 can be spliced ​​together to form a laser module 12 with a flat plate structure.

[0076] Understandably, in specific applications, different specifications of electrode sheets have different sizes. The size of the laser module 12 can be matched with that of the electrode sheet by disassembling and assembling the laser element 11 according to the specific size of the electrode sheet to be dried, thereby achieving better drying.

[0077] Furthermore, the laser elements 11 can be detachably connected via snap-fit ​​and slot-fit. Of course, other detachable connections can also be achieved. For example, a base can be provided with multiple grooves on the base, each groove corresponding to the size of a laser element 11. By fixing the laser elements 11 one by one into the grooves, the laser elements 11 can be spliced ​​together.

[0078] Therefore, by splicing multiple laser elements 11, a laser module 12 that matches the size of the electrode can be formed, thereby better heating and drying the electrode.

[0079] like Figure 6 As shown, in some embodiments, the laser module 12 includes multiple laser modules 12, which are detachably connected to each other to assemble a heating assembly 10.

[0080] Specifically, the laser module 12 may include multiple laser modules, and each laser module 12 is detachably connected to each other, thereby splicing the laser modules 12 to form the heating assembly 10.

[0081] In this way, the number of laser modules 12 can be adjusted according to the power requirements in the actual drying process, effectively improving drying efficiency and drying quality.

[0082] like Figure 7 As shown, in some embodiments, the heat-conducting assembly 20 includes a plurality of heat-conducting elements 21, which are detachably connected and arranged in a matrix. Each heat-conducting element 21 corresponds one-to-one with each laser element 11.

[0083] Specifically, the heat-conducting element 21 refers to a single semiconductor cooler unit. By detachably connecting multiple heat-conducting elements 21, the heat-conducting elements 21 and the laser element 11 can correspond one-to-one.

[0084] In this way, during the heating and drying process, when the temperature of the heating element in a certain local area is uneven, the corresponding heat-conducting element 21 can be adjusted to achieve flexible local temperature control, thereby keeping the overall temperature within the optimal temperature range.

[0085] Therefore, through the above structure, the temperature of the heating components 10 in different areas can be adjusted more flexibly and accurately, thereby achieving precise local temperature control and further improving drying efficiency and drying quality.

[0086] In some embodiments, each laser element 11 is configured as a vertical cavity surface-emitting laser.

[0087] Specifically, vertical cavity surface-emitting lasers, or VCSEL lasers, can emit parallel laser beams, thereby achieving better uniform heating and drying of the electrode surface.

[0088] Understandably, by adjusting the position of each laser element 11 so that the laser beam emitted by each laser element 11 is perpendicular to the surface of the electrode, and by controlling the focal length of the laser beam between 200mm and 300mm, the absorption rate of the slurry to the laser can be improved, and the overall temperature of the slurry can be raised rapidly.

[0089] The above structure enables uniform heating and drying of the electrode surface, further improving drying efficiency and quality.

[0090] Based on the same concept as the heating device 100 described above, this application also provides a coating oven apparatus, including a chamber and the heating device 100 as described above. The chamber has a receiving cavity for conveying electrode sheets, the heating device 100 is disposed in the receiving cavity, and the side surface of the heating component 10 facing away from the heat-conducting component 20 is disposed towards the electrode sheet.

[0091] Based on the same concept as the coating oven equipment described above, this application also provides a battery production system, including the coating oven equipment described above.

[0092] According to one or more embodiments, when this application is used in practice, multiple laser elements 11 are first spliced ​​together to form a laser module 12 according to the size of the electrode sheet to be dried, so that the size of the laser module 12 matches the size of the electrode sheet.

[0093] Furthermore, multiple heat-conducting elements 21 are spliced ​​together to form a heat-conducting assembly 20, which is matched with the size of the laser module 12. The cold side of the heat-conducting assembly 20 is attached to the surface of the laser module 12, and the hot side of the heat-conducting assembly 20 is attached to the surface of the cooling body 33.

[0094] The laser module 12 emits a laser beam toward the surface of the electrode to heat and dry it. At the same time, the temperature of the laser module 12 in different areas can be adjusted by regulating the temperature of the heat-conducting elements 21 in different areas, thereby making the temperature distribution more uniform and improving the drying efficiency and drying quality.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A heating device, characterized in that, The heating device is used for heating and drying electrode sheets, and includes: The heating assembly is positioned toward the electrode plate; A heat-conducting component having a cold surface and a hot surface that conduct heat to each other, the cold surface being attached to the side of the heating component facing away from the electrode; and A cooling assembly is attached to the hot surface, and the cooling assembly has cooling channels inside for containing coolant.

2. The heating device of claim 1, wherein The heat-conducting component includes a thermoelectric cooler having a cold side and a hot side, wherein the cold side of the thermoelectric cooler is attached to the heating component, and the hot side of the thermoelectric cooler is attached to the cooling component.

3. The heating device of claim 1, wherein, The cooling channel includes multiple sub-channels, each of which is arranged to run through a first direction, and the sub-channels are arranged sequentially along a second direction. Wherein, the first direction intersects the second direction, and both the first direction and the second direction are parallel to the hot surface.

4. The heating device of claim 3, wherein The cooling assembly includes a cooling body and multiple heat exchange fins. All the sub-channels are located inside the cooling body. Each sub-channel is provided with multiple heat exchange fins, and each heat exchange fin is spaced apart along the first direction in the corresponding sub-channel.

5. The heating device of claim 4, wherein, The cooling body includes a first cooling section and a second cooling section. The second cooling section is connected to the opposite ends of the first cooling section along the second direction and together with the first cooling section, they enclose a receiving groove. The first cooling section and the second cooling section each have the sub-channels formed inside; the heating component and the heat-conducting component are both disposed in the receiving groove and are in contact with the inner wall of the receiving groove.

6. The heating device of claim 1, wherein, The heating assembly includes multiple laser elements, which are detachably connected and arranged in a matrix to form a laser module.

7. The heating device of claim 6, wherein The laser module includes multiple laser modules, which are detachably connected to each other to assemble the heating component.

8. The heating device of claim 6, wherein, The thermally conductive assembly includes multiple thermally conductive elements, which are detachably connected and arranged in a matrix. Each of the heat-conducting elements is configured in a one-to-one correspondence with each of the laser elements.

9. The heating device of claim 6, wherein, Each of the laser elements is configured as a vertical cavity surface-emitting laser.

10. A coating oven apparatus characterized by, include: The housing has a cavity for receiving the electrode sheets; The heating device as described in any one of claims 1-9 is disposed within the receiving cavity, and the side surface of the heating component facing away from the heat-conducting component is disposed towards the electrode.

11. A battery production system characterized by comprising: Includes the coating oven equipment as described in claim 10.

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