Heat treatment device and battery processing equipment

Abstract

The utility model relates to a heat treatment device and battery processing equipment, and the heat treatment device comprises a drying oven which is internally provided with a conveying channel; the first heating assembly is provided with an air supply outlet communicated with the conveying channel; the second heating assembly is used for projecting the laser onto the surface of the pole piece in the conveying channel; in the preset direction, the first heating assembly and the second heating assembly are located on the two sides of the conveying channel correspondingly, and the opening direction of the air supply opening is opposite to the projection direction of the second heating assembly. The first heating assembly carries out heat treatment on the pole piece in an air supply mode, the second heating assembly carries out heat treatment on the pole piece in a laser mode, the heating effects of two different modes can be combined, the heat treatment quality of the pole piece is improved, the opening direction of the air supply opening is opposite to the projection direction of the second heating assembly, and the heat treatment efficiency is improved. And the first heating assembly and the second heating assembly can be matched together, so that the pole piece is heated more uniformly.

Description

Technical Field

[0001] The present application relates to the field of battery processing technology, and in particular to a heat treatment device and battery processing equipment. Background Art

[0002] The pole piece is an important component of the battery cell. After the pole piece is produced, it needs to be heat-treated to dry it because it is coated with active materials. However, the current heat treatment method for the pole piece easily causes different areas on the pole piece to be heated unevenly, affecting the heat treatment quality of the pole piece and thus affecting the overall structure of the pole piece. Utility Model Content

[0003] Based on this, it is necessary to provide a heat treatment device and battery processing equipment to address the problem of uneven heating during the current electrode heat treatment process, thereby affecting the overall structure of the electrode.

[0004] In a first aspect, the present application provides a heat treatment device, comprising:

[0005] An oven having a conveying channel for conveying the pole pieces;

[0006] A first heating assembly is disposed on the oven and has an air supply port communicated with the conveying passage; and

[0007] A second heating assembly is disposed outside the oven and is used to project the laser onto the surface of the pole piece in the conveying channel;

[0008] Wherein, in a preset direction, the first heating component and the second heating component are respectively located on both sides of the conveying channel, and the opening direction of the air supply port is arranged opposite to the projection direction of the second heating component;

[0009] The preset direction is arranged to intersect with the pole piece in the conveying channel.

[0010] Through the above structure, the electrode is first transported in the conveying channel inside the oven, and the electrode is heat treated during transportation, which can reduce the impact of the external environment on the heat treatment process of the electrode. In addition, the first heating component uses air supply to heat treat the electrode, and the second heating component uses laser to heat treat the electrode, which can combine the heating effects of two different methods to improve the quality of the heat treatment of the electrode, and the opening direction of the air supply port is set relative to the projection direction of the second heating component, so that the first heating component and the second heating component can cooperate together to make the heating on the electrode more uniform.

[0011] In some embodiments, the first heating component and the second heating component each include a plurality of components, and each first heating component and each second heating component are arranged one by one in a preset direction;

[0012] The first heating components and the second heating components located on the same side of the conveying channel in a preset direction are alternately arranged along the conveying direction of the electrode piece.

[0013] Thus, the first heating component and the second heating component are arranged in a one-to-one correspondence along the preset direction, so that the first heating component and the second heating component can heat the two side surfaces of the same area of ​​the pole piece in the thickness direction respectively. On the one hand, the two different heating methods of the first heating component and the second heating component are combined to make the two side surfaces in the thickness direction of the pole piece more evenly heated, thereby improving the quality of heat treatment. On the other hand, the first heating component and the second heating component are arranged relative to each other in the preset direction, which can reduce the probability of lasers of the two second heating components being irradiated against each other and reduce the probability of damage to the second heating components.

[0014] In some embodiments, the first heating component includes an air supply member, which is used to form an air flow and supply air to the air supply port, and the second heating component includes a laser, which is arranged between the air supply member and the air supply port.

[0015] Through the above structure, the heat generated by the laser in the process of generating laser light can be fully utilized, and the heat can be fully utilized to heat the air flow in the air supply member, so that hot air is smoothly formed at the air supply port and blown to the surface of the electrode for drying.

[0016] In some embodiments, the first heating component includes an air supply member and a heat exchange member. The air supply member is used to form an airflow and supply air to the air supply port. The second heating component includes a laser. The heat exchange member is arranged between the air supply member and the laser to realize heat transfer between the laser and the air supply member.

[0017] In this way, the heat generated by the laser in the process of generating laser light can be fully utilized to heat the air flow in the air supply member, so that hot air is smoothly formed at the air supply port and blown to the surface of the electrode for drying.

[0018] In some embodiments, the second heating component further includes a laser emitting element and a transmission element. The transmission element is connected between the laser and the laser emitting element for transmitting laser light. The emission direction of the laser emitting element is set along a preset direction toward the inside of the conveying channel.

[0019] Through the above structure, the laser generated in the laser is transmitted to the laser emitting element. At the same time, the laser can be connected to the air supply element to heat the airflow through the heat of the laser to form hot air. The process of emitting the laser by the laser emitting element will not be affected by the airflow and will be more stable.

[0020] In some embodiments, the second heating component further includes a light guide member, which is disposed between the laser emitting member and the conveying channel and is used to project the laser onto the surface of the pole piece in the conveying channel.

[0021] By setting the light guide, the irradiation range and irradiation position of the laser emitted by the laser emitting element can be adjusted, so that the laser can be irradiated more accurately on the target area on the surface of the pole piece, thereby improving the quality of heat treatment.

[0022] In some embodiments, the light directing member comprises an optical lens.

[0023] By setting up optical lenses, not only can the irradiation area of ​​the laser on the surface of the pole piece be expanded to improve the heat treatment efficiency, but the specific position of the laser irradiation on the surface of the pole piece can also be adjusted, making the laser heating position of the pole piece more accurate.

[0024] In some embodiments, the light-guiding member further includes a stopper, which is disposed between the pole piece and the laser emitting member along a preset direction, and the stopper is disposed corresponding to an area on the pole piece that is not coated with the active material.

[0025] By providing a stopper, the laser irradiated onto the area of ​​the pole piece not coated with the active material can be shielded, and the area not coated with the active material can be protected, so that the overall structure of the pole piece is more stable.

[0026] In some embodiments, the heat treatment device further comprises a first temperature measuring element, which is disposed in the conveying channel and is used to detect the internal temperature of the conveying channel;

[0027] And / or, the heat treatment device further comprises a second temperature measuring component, which is arranged in the conveying channel and is used to detect the surface temperature of the electrode piece.

[0028] In this way, the temperature in the conveying channel and the actual temperature on the surface of the pole piece can be detected timely and accurately, so as to better feedback and adjust the hot air frequency and the starting power of the laser.

[0029] In a second aspect, the present application also provides a battery processing device, including the heat treatment device as described above.

[0030] The above-mentioned heat treatment device and battery processing equipment transport the electrode through the conveying channel inside the oven and heat treat the electrode during transportation, which can reduce the impact of the external environment on the heat treatment process of the electrode; in addition, the first heating component uses air supply to heat treat the electrode, and the second heating component uses laser to heat treat the electrode, which can combine the heating effects of two different methods to improve the quality of heat treatment of the electrode, and the opening direction of the air supply port is arranged relative to the projection direction of the second heating component, so that the first heating component and the second heating component can cooperate together to make the heating on the electrode more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG. 1 is a schematic structural diagram of a heat treatment apparatus according to one or more embodiments.

[0032] FIG. 2 is a schematic structural diagram of a stopper in a heat treatment device according to one or more embodiments.

[0033] Explanation of the reference numerals: 100, heat treatment device; 200, pole piece; 201, coating area; 202, blank area; 10, oven; 20, first heating component; 30, second heating component; 11, conveying channel; 21, air supply port; 22, air supply member; 31, laser; 32, laser emitting member; 33, transmission member; 34, light-guiding member; 341, optical lens; 342, stop member; a, preset direction; b, conveying direction. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that if the terms "thickness", "up", "down", "vertical", "horizontal", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, 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 implementation method.

[0038] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0039] A battery cell is the smallest unit that makes up a battery. The structure of a battery cell includes an electrode assembly formed by stacking or winding positive and negative electrodes and a separator. The electrode assembly is the part of the battery cell where electrochemical reactions occur. The positive and negative electrodes need to be coated with active materials respectively. During the charge and discharge process of the battery, the active materials on the positive and negative electrodes can react with the electrolyte respectively, thereby achieving normal use of the battery.

[0040] After the electrode sheets (including positive electrode sheets and negative electrode sheets) are manufactured, in order to facilitate stacking or winding of the electrode sheets and the separator, the electrode sheets need to be heat treated so that the active materials on the electrode sheets can dry quickly.

[0041] At present, lasers are usually used to heat the pole pieces during heat treatment. Lasers have the characteristics of high heating efficiency and can effectively improve the overall production efficiency of batteries. However, in the process of heat treatment with lasers, due to the high power density of lasers, the temperature rise rate of the pole pieces is extremely fast, but the penetration depth is low, which can easily cause problems such as uneven heating in the thickness direction of the pole piece or excessive heating that burns the pole piece surface, affecting the overall structure of the pole piece.

[0042] Based on the above considerations, in order to solve the problem of uneven heating during the current heat treatment of the electrode, thereby affecting the overall structure of the electrode, the present application proposes a heat treatment device, which transports the electrode through a conveying channel inside an oven and heat treats the electrode during transportation, thereby reducing the impact of the external environment on the heat treatment process of the electrode; in addition, the first heating component uses air supply to heat treat the electrode, and the second heating component uses laser to heat treat the electrode, which can combine the heating effects of two different methods to improve the quality of the heat treatment of the electrode, and the opening direction of the air supply port is relatively set to the projection direction of the second heating component, so that the first heating component and the second heating component can cooperate together to make the heating on the electrode more uniform.

[0043] The battery processed by the heat treatment device and battery processing equipment provided by the present application has its pole pieces heated more evenly, thereby making the structure of the formed battery more stable.

[0044] Among them, the battery obtained by the heat treatment device and battery processing equipment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. Electrical devices using batteries as power sources can be, but not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0045] Referring to FIG. 1 , an embodiment of the present application provides a heat treatment device 100, including an oven 10, a first heating component 20, and a second heating component 30. The oven 10 has a conveying channel 11 for transporting the electrode 200. The first heating component 20 is disposed on the oven 10 and has an air outlet 21 connected to the conveying channel 11. The second heating component 30 is disposed outside the oven 10 and is used to project a laser onto the surface of the electrode 200 in the conveying channel 11. In the preset direction a, the first heating component 20 and the second heating component 30 are respectively located on both sides of the conveying channel 11, and the opening direction of the air outlet 21 is arranged opposite to the projection direction of the second heating component 30. The preset direction a is arranged to intersect with the electrode 200 in the conveying channel 11.

[0046] It should be noted that the heat treatment device 100 refers to a device that can heat and dry the electrode 200 to dry the active material on the electrode 200. The oven 10 is configured as a hollow box structure, and a conveying channel 11 for conveying the electrode 200 is formed inside the box. Openings are provided at both ends of the conveying channel 11. The electrode 200 enters the conveying channel 11 from one of the openings and moves out of the conveying channel 11 from the other opening.

[0047] The moving direction of the electrode piece 200 in the conveying channel 11 is the conveying direction b of the electrode piece 200 .

[0048] The first heating assembly 20 is a structure capable of blowing hot air to the surface of the electrode 200 in the conveying channel 11 to dry the electrode 200 by hot air. The first heating assembly 20 is disposed on the oven 10 and communicates with the conveying channel 11 through the air outlet 21 .

[0049] Thus, the first heating component 20 can blow hot air into the conveying channel 11 through the air supply port 21 to dry the electrode 200 inside the conveying channel 11 .

[0050] The second heating assembly 30 is a structure that can project laser light onto the surface of the electrode piece 200 in the conveying channel 11, so as to dry the electrode piece 200 by laser irradiation. The second heating assembly 30 is arranged outside the oven 10, and then the laser light is projected onto the surface of the electrode piece 200 in the conveying channel 11 by means of light guidance. In this way, the probability of interference or damage to the second heating assembly 30 by the internal environment of the oven 10 can be reduced, and the heating effect can be improved.

[0051] Further, the preset direction a is arranged perpendicular to the pole piece 200 in the conveying channel 11 , that is, when the pole piece 200 moves horizontally in the conveying channel 11 , the preset direction a is a vertical direction.

[0052] In the preset direction a, the first heating assembly 20 and the second heating assembly 30 are respectively located on opposite sides of the conveying channel 11, that is, when the first heating assembly 20 is located above the conveying channel 11, the second heating assembly 30 is located below the conveying channel 11. Conversely, when the first heating assembly 20 is located below the conveying channel 11, the second heating assembly 30 is located above the conveying channel 11.

[0053] In addition, in the preset direction a, the first heating assembly 20 and the second heating assembly 30 are arranged in a one-to-one correspondence, and the opening direction of the air outlet 21 of the first heating assembly 20 is arranged opposite to the projection direction of the second heating assembly 30. That is, when the opening direction of the air outlet 21 of the first heating assembly 20 is arranged downward, the projection direction of the second heating assembly 30 is arranged upward. Conversely, when the opening direction of the air outlet 21 of the first heating assembly 20 is arranged upward, the projection direction of the second heating assembly 30 is arranged downward.

[0054] Through the above structure, the pole piece 200 is first transported in the conveying channel 11 inside the oven 10, and the pole piece 200 is heat-treated during transportation, which can reduce the impact of the external environment on the heat treatment process of the pole piece 200. In addition, the first heating component 20 uses air supply to heat-treat the pole piece 200, and the second heating component 30 uses laser to heat-treat the pole piece 200, which can combine the heating effects of two different methods to improve the quality of the heat treatment of the pole piece 200, and the opening direction of the air supply port 21 is set relative to the projection direction of the second heating component 30, so that the first heating component 20 and the second heating component 30 can cooperate with each other, so that the pole piece 200 is heated more evenly.

[0055] In some embodiments, the first heating assembly 20 and the second heating assembly 30 each include a plurality of first heating assemblies 20 and second heating assemblies 30 are arranged one by one in a preset direction a. The first heating assemblies 20 and the second heating assemblies 30 located on the same side of the conveying channel 11 in the preset direction a are alternately arranged along the conveying direction b of the electrode 200.

[0056] Specifically, a plurality of first heating components 20 and a plurality of second heating components 30 are respectively arranged on the upper and lower sides of the conveying channel 11. In the upper side of the conveying channel 11, the first heating components 20 and the second heating components 30 are sequentially arranged along the conveying direction b of the electrode 200, that is, a first heating component 20 is first arranged, then a second heating component 30 is arranged, then a first heating component 20 is arranged, and then a second heating component 30 is arranged, and so on.

[0057] On the lower side of the conveying channel 11, corresponding to the upper side, the second heating assembly 30 and the first heating assembly 20 are sequentially arranged along the conveying direction b of the electrode 200, that is, a second heating assembly 30 is first arranged, and the second heating assembly 30 is arranged corresponding to the first first heating assembly 20 on the upper side along the preset direction a. Then a first heating assembly 20 is arranged, and the first heating assembly 20 is arranged corresponding to the second second heating assembly 30 on the upper side. Another second heating assembly 30 is arranged, and the second heating assembly 30 is arranged corresponding to the third first heating assembly 20 on the upper side. Then a first heating assembly 20 is arranged, and the first heating assembly 20 is arranged corresponding to the fourth second heating assembly 30 on the upper side, and so on.

[0058] Thus, the first heating component 20 and the second heating component 30 are arranged one by one along the preset direction a, so that the first heating component 20 and the second heating component 30 can heat the two side surfaces of the same area of ​​the pole piece 200 in the thickness direction respectively. On the one hand, the two different heating methods of the first heating component 20 and the second heating component 30 are combined, so that the two side surfaces of the pole piece 200 in the thickness direction are heated more evenly, and the quality of heat treatment is improved. On the other hand, the first heating component 20 and the second heating component 30 are arranged relative to each other in the preset direction a, which can reduce the probability of lasers of the two second heating components 30 being shot at each other, and reduce the probability of damage to the second heating component 30.

[0059] In some embodiments, the first heating component 20 includes an air supply member 22 for forming an air flow and supplying air to the air supply port 21 , and the second heating component 30 includes a laser 31 , which is disposed between the air supply member 22 and the air supply port 21 .

[0060] Specifically, the air supply member 22 can be but is not limited to being set as a fresh air system, and the air supply port 21 can be opened on the air supply member 22. The air supply member 22 forms an airflow and then supplies air to the air supply port 21, so that the airflow is blown out through the air supply port 21 to the surface of the pole piece 200 in the conveying channel 11.

[0061] The laser 31 is a structure capable of generating laser light, and the laser 31 generates heat in the process of generating laser light. The laser 31 is arranged between the air supply member 22 and the air supply port 21, specifically, the airflow generated by the air supply member 22 first flows through the laser 31, and the hot air is formed under the heating effect of the heat generated by the laser 31, and then the hot air is blown out to the conveying channel 11 through the air supply port 21.

[0062] Through the above structure, the heat generated by the laser 31 during the laser generation process can be fully utilized to heat the air flow in the air supply member 22, so that hot air is smoothly formed at the air supply port 21 and blown to the surface of the pole piece 200 for drying.

[0063] In some embodiments, the first heating component 20 includes an air supply member 22 and a heat exchange component (not shown in the figure), the air supply member 22 is used to form an airflow and supply air to the air supply port 21, the second heating component 30 includes a laser 31, and the heat exchange component is arranged between the air supply member 22 and the laser 31 to realize heat transfer between the laser 31 and the air supply member 22.

[0064] Heat exchange media such as oil or water can be provided in the heat exchange component, and heat storage structures such as solid-liquid phase change materials can also be used for heat transfer.

[0065] Specifically, the heat exchange component is arranged between the air supply member 22 and the laser 31, so that the heat exchange medium in the heat exchange component first exchanges heat with the laser 31, and the heat generated by the laser 31 is used to heat the heat exchange medium, and then the airflow formed by the air supply member 22 is heated by the heat exchange medium to form hot air and blow it to the surface of the pole piece 200 through the air supply port 21.

[0066] In this way, the heat generated by the laser 31 during the process of generating laser light can be fully utilized to heat the air flow in the air supply member 22, so that hot air is smoothly formed at the air supply port 21 and blown to the surface of the pole piece 200 for drying.

[0067] In some embodiments, the second heating component 30 also includes a laser emitting element 32 and a transmission element 33. The transmission element 33 is connected between the laser 31 and the laser emitting element 32 for transmitting laser. The emission direction of the laser emitting element 32 is set along a preset direction a toward the inside of the conveying channel 11.

[0068] Specifically, the laser emitting element 32 refers to a component that can emit laser light so that the laser light can be smoothly irradiated to the target position. The transmission element 33 can be, but is not limited to, set as an optical fiber, and the transmission element 33 is connected between the laser emitting element 32 and the laser 31, and transmits the laser light generated by the laser 31 to the laser emitting element 32, and then emits the laser light into the conveying channel 11 through the laser emitting element 32.

[0069] Through the above structure, the laser generated in the laser 31 is transmitted to the laser emitting element 32. At the same time, the laser 31 can be connected to the air supply element 22 to heat the airflow through the heat of the laser 31 to form hot air. The process of emitting laser by the laser emitting element 32 will not be affected by the airflow and will be more stable.

[0070] In some embodiments, the second heating assembly 30 further includes a light guide member 34 , which is disposed between the laser emitting member 32 and the conveying channel 11 and is used to project the laser onto the surface of the pole piece 200 in the conveying channel 11 .

[0071] Specifically, the light-guiding component 34 refers to a component that can guide the laser emitted by the laser emitting component 32 so that the laser can be irradiated more accurately on the target area on the surface of the pole piece 200 .

[0072] Therefore, by setting the light guide member 34, the irradiation range and irradiation position of the laser emitted by the laser emitting element 32 can be adjusted, so that the laser can be more accurately irradiated on the target area on the surface of the pole piece 200, thereby improving the quality of heat treatment.

[0073] In some embodiments, the light guiding element 34 includes an optical lens 341 .

[0074] Specifically, the light guide member 34 can be, but is not limited to, an optical lens 341 such as a convex lens. The convex lens can diffuse the laser emitted by the laser emitting member 32 to expand the irradiation area of ​​the laser on the surface of the pole piece 200 and improve the heat treatment efficiency.

[0075] In addition, the specific position where the laser is irradiated onto the surface of the pole piece 200 can be adjusted by moving the position of the optical lens 341 , so that the laser can more accurately perform heat treatment on the target area on the pole piece 200 .

[0076] Therefore, by setting the optical lens 341, not only can the irradiation area of ​​the laser on the surface of the pole piece 200 be expanded to improve the heat treatment efficiency, but also the specific position of the laser irradiation on the surface of the pole piece 200 can be adjusted to make the laser heating position of the pole piece 200 more accurate.

[0077] Please refer to Figure 1 and Figure 2 together. In some embodiments, the light guide member 34 also includes a stopper 342. The stopper 342 is arranged between the pole piece 200 and the laser emitting member 32 along a preset direction a, and the stopper 342 is arranged corresponding to the area on the pole piece 200 that is not coated with active material.

[0078] Specifically, the stopper 342 is configured as a baffle, which is arranged parallel to the pole piece 200 in the conveying channel 11 , and is located between the pole piece 200 and the laser emitting element 32 along a preset direction a. The baffle can be set on the optical lens 341 .

[0079] It should be noted that the pole piece 200 has a coating area 201 coated with active material and a blank area 202 not coated with active material. During the heat treatment process of the pole piece 200, the coating area 201 on the pole piece 200 is actually heated and dried. In other words, the blank area 202 on the pole piece 200 does not need to be heated, and since the blank area 202 is not blocked by active material, excessive heating may also cause burns to the pole piece 200.

[0080] Therefore, the baffle is disposed corresponding to the blank area 202 on the pole piece 200 which is not coated with active material, and the laser irradiated toward the blank area 202 is shielded by the baffle, so that the laser is irradiated only to the coated area 201 on the pole piece 200 .

[0081] In addition, the stopper 342 can be set to be detachable, and by changing the size and number of the stopper 342, the stopper 342 can better cover the blank area 202 on the pole piece 200. The specific shape of the stopper 342 can also be adjusted accordingly according to the shape of the blank area 202 on the pole piece 200, so that the stopper 342 can better cover the blank area 202.

[0082] By providing the stopper 342 , the laser irradiated onto the area of ​​the pole piece 200 not coated with the active material can be shielded, and the area not coated with the active material can be protected, so that the overall structure of the pole piece 200 is more stable.

[0083] In some embodiments, the heat treatment device 100 further includes a first temperature measuring element (not shown in the figure), which is disposed in the conveying channel 11 and is used to detect the internal temperature of the conveying channel 11. And / or, the heat treatment device 100 further includes a second temperature measuring element, which is disposed in the conveying channel 11 and is used to detect the surface temperature of the electrode 200.

[0084] Specifically, the first temperature measuring component and the second temperature measuring component can both be set as temperature measuring probes, wherein the first temperature measuring component is used to detect the overall temperature in the conveying channel 11 , and the second temperature measuring component is used to detect the surface temperature on the electrode 200 .

[0085] Thus, the temperature in the conveying channel 11 and the actual temperature on the surface of the pole piece 200 can be detected timely and accurately, so as to better feedback and adjust the hot air frequency and the starting power of the laser 31.

[0086] Based on the same concept as the above-mentioned heat treatment device 100 , the present application also provides a battery processing device, including the above-mentioned heat treatment device 100 .

[0087] According to one or more embodiments, the pole piece 200 roll is placed on a roller and belt structure, driving the pole piece 200 to move along the conveying direction b and pass through the conveying channel 11.

[0088] When the pole piece 200 passes through the conveying channel 11, airflow is formed inside the air supply member 22, and after the airflow exchanges heat with the heat generated by the laser 31, hot air is formed, and the hot air is blown to the surface of the pole piece 200 through the air supply port 21. At the same time, the laser generated inside the laser 31 is transmitted to the laser emitting member 32 via the optical fiber, and then emitted toward the inside of the conveying channel 11 through the laser emitting member 32, and after being adjusted by the optical lens 341, it is irradiated to the target area on the pole piece 200.

[0089] Therefore, by simultaneously heating the two side surfaces of the pole piece 200 in the thickness direction by hot air and laser, the pole piece 200 can be heated more evenly, thereby improving the efficiency and quality of the heat treatment of the pole piece 200.

[0090] In addition, since the heat generated by the laser 31 is used to heat the airflow, on the one hand, no additional cooling structure is required to cool the laser 31. On the other hand, the airflow can be smoothly heated to form hot air that is blown to the surface of the pole piece 200 for heating.

[0091] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0092] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A heat treatment device, characterized in that: include: An oven having a conveying channel for conveying the pole pieces; a first heating assembly, disposed on the oven and having an air supply port communicated with the conveying passage; and A second heating assembly is disposed outside the oven and is used to project laser light onto the surface of the pole piece in the conveying channel; Wherein, in a preset direction, the first heating component and the second heating component are respectively located on both sides of the conveying channel, and the opening direction of the air supply port is arranged opposite to the projection direction of the second heating component; The preset direction is arranged to intersect with the pole piece in the conveying channel.

2. The heat treatment device according to claim 1, characterized in that The first heating assembly and the second heating assembly each include a plurality of first heating assemblies and each second heating assembly is arranged in a one-to-one correspondence in the preset direction; The first heating components and the second heating components located on the same side of the conveying channel in the preset direction are alternately arranged along the conveying direction of the electrode piece.

3. The heat treatment device according to claim 1, characterized in that The first heating component includes an air supply member, which is used to form an air flow and supply air to the air supply port. The second heating component includes a laser, which is arranged between the air supply member and the air supply port.

4. The heat treatment device according to claim 1, characterized in that The first heating component includes an air supply member and a heat exchange component. The air supply member is used to form an airflow and supply air to the air supply port. The second heating component includes a laser. The heat exchange component is arranged between the air supply member and the laser to realize heat transfer between the laser and the air supply member.

5. The heat treatment device according to claim 3 or 4, characterized in that: The second heating component also includes a laser emitting element and a transmission element. The transmission element is connected between the laser and the laser emitting element and is used to transmit laser light. The emitting direction of the laser emitting element is set along the preset direction toward the inside of the conveying channel.

6. The heat treatment device according to claim 5, characterized in that: The second heating component also includes a light guide member, which is arranged between the laser emitting member and the conveying channel and is used to project the laser onto the surface of the pole piece in the conveying channel.

7. The heat treatment device according to claim 6, characterized in that The light guiding member comprises an optical lens.

8. The heat treatment device according to claim 7, characterized in that: The light guide member further includes a stopper, which is arranged between the pole piece and the laser emitting member along the preset direction, and the stopper is arranged corresponding to a region on the pole piece that is not coated with active material.

9. The heat treatment device according to claim 1, characterized in that: The heat treatment device further comprises a first temperature measuring element, which is arranged in the conveying channel and is used to detect the internal temperature of the conveying channel; And / or, the heat treatment device further includes a second temperature measuring component, which is disposed in the conveying channel and is used to detect the surface temperature of the electrode.

10. A battery processing device, characterized in that: Comprising a heat treatment device as described in any one of claims 1-9.

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