Battery heating device and battery processing equipment

Abstract

The present application relates to a battery heating device and battery processing equipment, comprising at least two heating roller groups and a drive mechanism. The heating roller group comprises a rotating shaft and a plurality of coil rows disposed on the rotating shaft and spaced apart circumferentially about the rotating shaft. The coils in two adjacent coil rows are staggered along the circumference of the rotating shaft. Each heating roller group is arranged in parallel and spaced apart, forming a heating space between adjacent heating roller groups for placing batteries. The coil rows in two adjacent heating roller groups correspond one-to-one to form a heating coil group, and the coils on different heating roller groups in the heating coil group correspond one-to-one. When the heating coil group is in a heating state, the multiple coils of the heating coil group face the battery located between the corresponding two heating roller groups and generate an electromagnetic field that heats the battery. The drive mechanism drives the rotating shafts to rotate synchronously so that the heating coil groups can alternately enter the heating state. The electromagnetic field generated by this battery heating device can uniformly and efficiently heat the battery.

Description

Technical Field

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

[0002] As a major development in new energy, battery production and manufacturing technology is constantly evolving. Hot pressing, a crucial step in the battery production process, significantly impacts battery performance. However, due to the varying characteristics of different battery types, the challenges encountered during hot pressing also vary. For example, blade-type batteries are long and bulky, requiring a longer heating time during hot pressing.

[0003] At present, the commonly used heating methods in hot pressing and shaping treatment are resistance wire heating and induction heating. Among them, resistance wire heating has the problems of low heating efficiency and high energy consumption, while induction heating has the problem of uneven heating. Summary of the Invention

[0004] Based on this, it is necessary to provide a battery heating device and battery processing equipment to address the problems of uneven heating, low heating efficiency and high energy consumption in hot pressing and shaping treatment.

[0005] A battery heating device, comprising:

[0006] At least two heating roller groups, the heating roller groups comprising a rotating shaft, a magnet and a plurality of coils, the magnet being sleeved on the outer circumference of the rotating shaft, the magnet being provided with a plurality of connecting ends, each of the connecting ends being wound with the coil, the plurality of connecting ends being arranged at intervals along the axial direction of the rotating shaft to form a connecting end row, the plurality of coils wound around the connecting end row forming a coil row, and a plurality of coil rows being arranged at intervals along the circumference of the rotating shaft, the coils in two adjacent coil rows being staggered along the circumference of the rotating shaft; the at least two heating roller groups are arranged in parallel and at intervals, and a space is formed between the two adjacent heating roller groups. A heating space is formed, and the heating space is used to place batteries that need to be heated; the coil rows in two adjacent heating roller groups correspond one to one to form a heating coil group, and the coils in the heating coil group located in different heating roller groups correspond one to one; the heating coil group has a heating state, and in the heating state, the multiple coils in the heating coil group are all oriented towards the battery located between the corresponding two heating roller groups, and the heating coil group is capable of forming an electromagnetic field in the heating space located between the corresponding two heating roller groups, and the electromagnetic field is used to heat the battery located in the corresponding heating space;

[0007] A driving mechanism is connected to the at least two rotating shafts and can drive the at least two rotating shafts to rotate synchronously; when the driving mechanism drives the at least two rotating shafts to rotate, each of the heating coil groups can alternately enter the heating state in turn.

[0008] The technical solution is further described below:

[0009] In one embodiment, the plurality of coil columns are evenly spaced along the circumference of the rotation axis;

[0010] And / or, the polarities of the two adjacent coils in each coil column are opposite, and the polarity of each coil is also opposite to the polarity of the corresponding coil in another coil column in the same heating coil group.

[0011] In one embodiment, the superposition of the electromagnetic fields generated by each heating coil group in a heating state can cover the battery located between the two heating roller groups corresponding to the heating coil group.

[0012] In one embodiment, in the heating state, the projections of two opposite coils in the heating coil group located in different heating roller groups overlap in the first direction, wherein the first direction is the thickness direction of the battery arranged between the two heating roller groups corresponding to the heating coil group.

[0013] In one embodiment, in the heating state, when the coil in the heating coil group extends along the first direction, the projection of the coil along the first direction on the battery located between the two heating roller groups corresponding to the heating coil group is a first projection, and the superposition of the first projections of each coil in one of the heating roller groups corresponding to the heating coil group can cover the battery located between the two heating roller groups corresponding to the heating coil group.

[0014] In one embodiment, the battery heating device further includes a support assembly, wherein the support assembly is used to support the at least two heating roller groups, and the support assembly is rotatably connected to the at least two rotating shafts.

[0015] In one embodiment, the magnetizer includes a plurality of sub-magnetizers which are sleeved on the outer circumference of the rotating shaft and arranged in sequence along the axial direction of the rotating shaft. The sub-magnetizers are each provided with a plurality of connecting ends, and the plurality of connecting ends are arranged at intervals along the axial direction of the rotating shaft to form a sub-connecting end column, and a plurality of sub-connecting end columns are arranged at intervals along the circumference of the rotating shaft, and the connecting ends in two adjacent sub-connecting end columns are staggered along the circumference of the rotating shaft; in the axial direction of the rotating shaft, the sub-connecting end columns in the plurality of sub-magnetizers correspond one to one to form the connecting end column.

[0016] In one embodiment, the battery heating device further includes a support assembly, wherein the support assembly is used to support the at least two heating roller groups, and the support assembly is rotatably connected to the at least two rotating shafts.

[0017] In one embodiment, the number of the heating roller groups is two.

[0018] In one embodiment, the driving mechanism includes a motor, a driving gear and two driven gears, the motor is drivingly connected to the driving gear, the two driven gears are drivingly connected to the driving gear, and the driven gears are drivingly connected to the rotating shaft in a one-to-one correspondence.

[0019] A battery processing device comprises the above-mentioned battery heating device.

[0020] In the battery heating device described above, the coil is wound around the connection end of the magnetic conductor, which enables the magnetic conductor to enhance the electromagnetic field strength generated by the coil. The coil rows on two adjacent heating roller groups correspond one to one to form a heating coil group. The coils in the heating coil group located in different heating roller groups correspond one to one. When the heating coil group is in the heating state, the electromagnetic field generated by the heating coil group can generate eddy currents inside the battery located between the corresponding two heating roller groups, and then the eddy currents can be used to directly heat the battery, thereby effectively improving heating efficiency and reducing heating energy consumption. Because the multiple coil rows on the heating roller group are staggered along the circumference of the rotating shaft, under the drive action of the drive mechanism, each heating coil group that enters the heating state in turn can correspond to different positions of the heating battery, realizing dynamic changes in the heating position to ensure uniform battery heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings that constitute a part of this application are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only for illustrative purposes and are not necessarily drawn to true scale.

[0024] Figure 1 Schematic diagram of the structure of a battery heating device according to an embodiment.

[0025] Figure 2 for Figure 1 The battery heating device shown is a schematic structural diagram from another perspective.

[0026] Figure 3 Schematic diagram of the structure of the rotating shaft and the magnetic conductor according to one embodiment.

[0027] Description of reference numerals:

[0028] 100. Battery heating device; 1. Heating roller assembly; 11. Magnetizer; 111. Connecting end; 111a. Connecting end array; 12. Rotating shaft; 13. Coil; 1b. Coil array; 1c. Heating space; 2. Battery; 3. Support assembly; 31. Support frame; 4. Driving mechanism; 41. Driven gear; 42. Motor; 43. Driving gear. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply 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 this application.

[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0034] 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 an intermediate 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 an intermediate element. 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 embodiment.

[0035] See Figure 1 and Figure 2 , Figure 1 FIG. 1 shows a schematic structural diagram of a battery heating device 100 in an embodiment of the present application. Figure 2 Shown Figure 1 The battery heating device 100 is a schematic structural diagram from another perspective. An embodiment of the present application provides a battery heating device 100, which includes at least two heating roller groups 1 and a driving mechanism 4.

[0036] Combine Figure 1 and Figure 2 As shown, the heating roller assembly 1 includes a rotating shaft 12, a magnetizer 11, and multiple coils 13. The magnetizer 11 is sleeved around the outer circumference of the rotating shaft 12. The magnetizer 11 is provided with multiple connection terminals 111, each of which is wound with a coil 13. The connection terminals 111 are arranged axially along the rotating shaft 12 to form a connection terminal array 111a. The coils 13 wound around the connection terminal array 111a form a coil array 1b. Multiple coil arrays 1b are spaced circumferentially along the rotating shaft 12, with the coils 13 in two adjacent coil arrays 1b arranged in an alternating pattern. At least two heating roller assemblies 1 are arranged side by side and spaced apart. A heating space 1c is formed between the two adjacent heating roller assemblies 1 for accommodating the batteries 2 to be heated. The coil arrays 1b in the two adjacent heating roller assemblies 1 correspond one-to-one to form a heating coil assembly (not shown), and the coils 13 in different heating roller assemblies 1 within the heating coil assembly correspond one-to-one. The heating coil assembly has a heating state. In this state, the multiple coils 13 within the heating coil assembly face the battery 2 located between the corresponding two heating roller assemblies 1. The heating coil assembly is capable of generating an electromagnetic field within the heating space 1c between the corresponding two heating roller assemblies 1, which is used to heat the battery 2 located within the corresponding heating space 1c. The drive mechanism 4 is drivably connected to the at least two rotating shafts 12 and is capable of driving the at least two rotating shafts 12 to rotate synchronously. As the drive mechanism 4 drives the at least two rotating shafts 12 to rotate, the heating coil assemblies can alternately enter the heating state.

[0037] Combine Figure 1 and Figure 2As shown, when the heating coil assembly is in the heating state, it can form an alternating magnetic field within the corresponding heating space 1c, thereby generating eddy currents inside the battery 2 located in the heating space 1c, thereby directly heating the battery 2. Compared with traditional resistance wire heating, this heating method can reduce the heat transfer process through the medium, improve heating efficiency, and reduce heating energy consumption.

[0038] Combine Figure 1 and Figure 2 As shown, the coils 13 in the heating coil assembly have two critical heating positions. When the coils 13 in the heating coil assembly reach these critical heating positions, the multiple coils 13 in the heating coil assembly face the battery 2 located between the corresponding two heating roller assemblies 1, and high-frequency alternating current is supplied or stopped from supplying to the coils 13. Therefore, these two critical heating positions are the boundary positions at which the heating coil assembly can heat the battery 2 located between the corresponding two heating roller assemblies 1. Therefore, when the coils 13 in the heating coil assembly are rotated by two adjacent rotating shafts 12 to reach these two critical heating positions, the heating coil assembly enters or exits the heating state.

[0039] Combine Figure 1 and Figure 2 As shown, when the coils 13 in the heating coil assembly are located between the two critical heating positions and are all facing the battery 2 located between the two heating roller groups 1 corresponding to the heating coil assembly, the heating coil assembly is in a heating state. Therefore, it can be defined that the coils 13 in the heating coil assembly can form a heating interval between the two critical heating positions, and the battery 2 is heated within this heating interval. Within this heating interval, a high-frequency alternating current is passed through the multiple coils 13 in the heating coil assembly, thereby forming an electromagnetic field within the heating space 1c corresponding to the heating coil assembly, thereby directly heating the battery 2.

[0040] Combine Figure 1 and Figure 2 The connection end 111 on the magnetizer 11 can enhance the magnetic field strength generated by the coil 13. Furthermore, the connection end 111 can ensure that the coil can be securely mounted on the magnetizer 11, thereby ensuring that the magnetic field generated by the coil 13 can heat different locations of the battery 2 during the rotation of the heating roller assembly 1, thereby achieving more uniform heating of the battery 2.

[0041] Optionally, the number of turns of the coil 13 wound around the connection end 111 can be designed as needed, for example, it can be one turn, two turns, three turns or more turns.

[0042] In the battery heating device 100 described above, the coils 13 are wound around the connection ends 111 of the magnetic conductor 11, enabling the magnetic conductor 11 to enhance the electromagnetic field intensity generated by the coils 13. The coil rows 1b on two adjacent heating roller assemblies 1 correspond one-to-one to form a heating coil assembly. Within the heating coil assembly, the coils 13 located in different heating roller assemblies 1 correspond one-to-one. When the heating coil assembly is in the heating state, the electromagnetic field generated by the heating coil assembly can induce eddy currents within the battery 2 located between the two corresponding heating roller assemblies 1. These eddy currents can then directly heat the battery 2, effectively improving heating efficiency and reducing heating energy consumption. Furthermore, because the multiple coil rows 1b on the heating roller assemblies 1 are staggered along the circumference of the rotating shaft 12, each heating coil assembly, driven by the drive mechanism 4, can alternately enter the heating state and heat different locations on the battery 2, achieving dynamic changes in the heating position to ensure uniform heating of the battery 2.

[0043] Specifically, when the battery heating device 100 is used to heat a blade-type battery, the length of the blade-type battery can be parallel to the axial direction of the rotating shaft 12, so that by lengthening the rotating shaft 12 and the coil 13 provided on the rotating shaft 12, the blade-type battery can be completely disposed within the heating space 1c, and the point magnetic field generated by the heating coil group can cover the length of the blade-type battery to ensure uniform heating and effectively shorten the heating time. In addition, since the width of the blade-type battery is relatively narrow, when the blade-type battery is located in the heating space, the electromagnetic field generated by each heating coil group can better cover the blade-type battery in the width direction of the blade-type battery, so that when the rotating shaft 12 rotates so that each heating coil group enters the heating state in turn, the battery heating device 100 can comprehensively and evenly heat the blade-type battery and effectively improve the heating efficiency of the blade-type battery.

[0044] Optionally, during the process of heating the battery 2 by the battery heating device 100, the rotational pattern of the rotating shaft 12 can be designed as needed. For example, the rotating shaft 12 can rotate continuously at a high speed so that the position of the battery 2 being heated continuously changes during the heating process. Alternatively, the rotating shaft 12 can also move intermittently, that is, when the rotating shaft 12 rotates to a certain position so that a certain heating coil group is in a heating state, it pauses for a certain period of time and then rotates again to allow the next heating coil group to enter the heating state. This rotational pattern facilitates the heating coil groups to efficiently heat the battery 2.

[0045] Optionally, in some embodiments, when the heating coil group is in the heating state, direct current can also be passed into the coil 13. At this time, the rotating shaft 12 should be rotated at a high speed so that the heating coil group can generate a changing electromagnetic field in the corresponding heating space 1c to stimulate eddy currents inside the battery 2, thereby achieving direct heating of the battery 2.

[0046] Optionally, in some embodiments, the coil 13 can also be replaced by a permanent magnet. In this case, in order to enable the heating coil group to generate a changing magnetic field in the corresponding heating space 1c to stimulate eddy currents inside the battery 2 and achieve direct heating of the battery 2, the rotating shaft 12 should be kept rotating at a high speed.

[0047] In one embodiment, if Figure 1 and Figure 2 As shown, multiple coil arrays 1b are evenly spaced along the circumference of the rotating shaft 12. When multiple coil arrays 1b are evenly spaced along the circumference of the rotating shaft 12, the battery heating device 100 can change the heating position every time the rotating shaft 12 rotates a certain angle, thereby heating different positions of the battery 2, thereby ensuring uniform heating of the battery 2.

[0048] Optionally, the number of coil columns 1b in the heating roller group 1 can be designed as needed. For example, the number of coil columns 1b can be four, and the four coil columns 1b are evenly spaced around the circumference of the rotating shaft 12, so that the heating position of the battery 2 changes every time the rotating shaft 12 rotates 90°.

[0049] In another embodiment, when the plurality of coil rows 1b in the heating roller group 1 are arranged at uneven intervals in the circumferential direction of the rotating shaft 12, as long as two adjacent rotating shafts 12 rotate, the heating coil groups in the corresponding heating roller group 1 can enter the heating state in sequence.

[0050] In one embodiment, combined Figure 1 and Figure 2 As shown, the polarity of the two adjacent coils 13 in each coil column 1b is opposite, and the polarity of each coil is also opposite to the polarity of the corresponding coil 13 in the other coil column 1b in the same heating coil group. In the heating state, when the polarity of the two adjacent coils 13 in the coil column 1b of the heating coil group is different, and the polarity of the two adjacent coils 13 is also different from the polarity of the two coils 13 opposite to them in the other coil column 1b of the heating coil group, a coil group can be formed between the two adjacent pairs of coils 13 in the heating coil group. At this time, in the heating state, a closed magnetic circuit can be formed between the coil groups. Among them, because the closed magnetic conductive path can enhance the penetration ability of the magnetic field, when the coil group can form a closed magnetic circuit in the corresponding heating space 1c, the battery 2 in the heating space 1c can be fully heated while effectively shortening the heating time and improving the heating efficiency.

[0051] Optionally, the number of coils 13 in each coil column 1 b can be set according to quantity, for example, it can be two, three, six or more.

[0052] In another embodiment, the three adjacent pairs of coils 13 in the heating coil group can also be constructed into a coil group. In this case, currents with a phase difference of 120 degrees can be respectively passed through the adjacent coils 13 in the same coil column 1b of the heating coil group, and currents with the same phase are respectively passed through the three coils 13 opposite to the three coils 13 in another coil column 1b, so that the coil group can form a closed and linearly movable magnetic circuit in the corresponding heating space 1c, so that the position where the magnetic flux lines penetrate the battery 2 is constantly changing, thereby improving the heating uniformity of the battery 2.

[0053] In one embodiment, if Figure 1 and Figure 2 As shown, in the heating state, the projections of two opposing coils 13 in the heating coil assembly, located in different heating roller groups 1, overlap in a first direction, where the first direction is the thickness direction of the battery 2 located between the two corresponding heating roller groups 1 in the heating coil assembly. This overlap in the first direction strengthens the electromagnetic field formed by the heating coil assembly within the corresponding heating space 1c, thereby enhancing the penetration of the magnetic field and enabling direct heating of all batteries 2. This shortens the heating time and improves heating efficiency.

[0054] Furthermore, if Figure 1 and Figure 2 As shown, the electromagnetic fields generated by each heating coil assembly in the heating state can overlap the battery located between the two corresponding heating roller assemblies. When the electromagnetic fields generated by each heating coil assembly in two adjacent heating roller assemblies 1 can cover the corresponding battery, the two adjacent heating roller assemblies 1 can fully heat different locations of the battery 2 located between them, thereby ensuring uniform heating of the battery 2.

[0055] Furthermore, if Figure 1 and Figure 2As shown, in the heating state, when the coils 13 in the heating coil assembly extend in a first direction, the projection of the coils 13 along the first direction onto the battery 2 located between the two heating roller assemblies 1 corresponding to the heating coil assembly is a first projection. The superposition of the first projections of the coils 13 in one of the heating roller assemblies 1 corresponding to the heating coil assembly can cover the battery 2 located between the two heating roller assemblies 1 corresponding to the heating coil assembly. When the coils 13 extend in the first direction, the two opposing coils 13 in different heating roller assemblies within the heating coil assembly are positioned opposite each other. In this state, the electromagnetic field generated by the heating coil assembly is at its maximum intensity. Therefore, when the heating coil assembly heats the corresponding battery 2 in this state, the heating time is effectively shortened and the heating efficiency is improved. The superposition of the first projections of the coils 13 in the heating roller assembly 1 can cover the corresponding battery 2. This allows the heating roller assembly 1 to fully heat different locations of the battery 2 located between the two during rotation, thereby ensuring uniform heating of the battery 2.

[0056] In one embodiment, the magnetizer 11 includes a plurality of sub-magnetizers that are sleeved on the outer circumference of the rotating shaft 12 and arranged in sequence along the axial direction of the rotating shaft 12. Each sub-magnetizer is provided with a plurality of connection ends 111. The plurality of connection ends 111 are arranged at intervals along the axial direction of the rotating shaft 12 to form a sub-connection end column, and a plurality of sub-connection end columns are arranged at intervals along the circumference of the rotating shaft 12. The connection ends 111 in two adjacent sub-connection end columns are staggered along the circumference of the rotating shaft 12. In the axial direction of the rotating shaft 12, the sub-connection end columns in the plurality of sub-magnetizers correspond one to one to form a connection end column 111a. When the magnetizer 11 is formed by splicing together a plurality of sub-magnetizers that are arranged in sequence along the axial direction of the rotating shaft 12, not only is the processing of the magnetizer 11 more convenient, but the assembly is also more convenient. The magnetizer 11 can also be assembled and adjusted according to the battery 2 to be heated. For example, the number of sub-magnetizers installed on the rotating shaft 12 is set according to the length of the battery 2, so that the battery heating device 100 can be compatible with batteries 2 of different lengths and ensure the heating effect.

[0057] Optionally, the number of connection terminals 111 on the sub-magnetic conductor can be designed as needed, for example, it can be two or three.

[0058] In one embodiment, Figure 1 and Figure 2 As shown, the battery heating device 100 further includes a support assembly 3 for supporting at least two heating roller assemblies. The support assembly 3 is rotatably connected to at least two rotating shafts. The arrangement of the support assembly 3 ensures relative stability between the heating roller assemblies 1 when the rotating shaft 12 drives the rotating shafts 12 in each heating roller assembly 1, thereby ensuring the reliability of the battery heating device 100.

[0059] Further, such as Figure 1 and Figure 2 As shown, the support assembly 3 may include two support frames 31 arranged opposite to each other, the heating roller assembly 1 may be connected between the two support frames 31 , and the rotating shaft 12 in the heating roller assembly 1 is rotatably connected to both support frames 31 .

[0060] In one embodiment, Figure 1 and Figure 2 As shown, there are two heating roller sets 1. When there are two heating roller sets 1, the structure of the battery heating device 100 is simpler and the volume is smaller, which is conducive to miniaturization of the device.

[0061] Furthermore, if Figure 1 and Figure 2 As shown, the drive mechanism 4 includes a motor 42, a driving gear 43, and two driven gears 41. The motor 42 is drivingly connected to the driving gear 43, and the two driven gears 41 are both drivingly connected to the driving gear 43. The driven gears 41 are drivingly connected to the rotating shaft 12 in a one-to-one correspondence. When the motor 42 drives the driving gear 43 to rotate, and the driving gear 43 drives the two driven gears 41 to rotate synchronously, the two driven gears 41 can synchronously drive the rotating shaft 12 to which they are drivingly connected, thereby enabling the rotating shaft 12 to synchronously drive the heating coil groups in the heating roller assembly 1, ensuring that each heating coil group can alternately enter the heating state in sequence, thereby ensuring uniform heating of the battery 2.

[0062] Further, such as Figure 1 and Figure 2 As shown, the driving mechanism 4 can be arranged on a side of one of the support frames 31 away from the heating roller assembly 1 , and the driving mechanism is connected to one end of the rotating shaft 12 passing through the support frame 31 .

[0063] Furthermore, if Figure 1 and Figure 2 As shown, the two driven gears 41 can be arranged on opposite sides of the driving gear 43, and the two driven gears 41 are externally meshed with the driving gear 43, so that the driving gear 43 can drive the two driven gears 41 to rotate in opposite directions, thereby driving the rotating shafts 12 in the two heating roller groups 1 and the coil arrays 1b in the two heating roller groups 1 to rotate in opposite directions. This design makes the structure of the driving mechanism 4 simple and highly reliable.

[0064] In other embodiments, the two driven gears 41 can be disposed within the driving gear 43 and mesh with the driving gear 43, so that the driving gear 43 can drive the two driven gears 41 to rotate in the same direction, thereby driving the rotating shafts 12 in the two heating roller assemblies 1 and the coil arrays 1b in the two heating roller assemblies 1 to rotate in the same direction. This design can effectively reduce the space occupied by the drive mechanism, facilitating a miniaturized design of the drive mechanism 4.

[0065] Combine Figure 1 and Figure 2 As shown, an embodiment of the present application further provides a battery processing device, which includes the battery heating device 100 in any of the above embodiments.

[0066] In the aforementioned battery processing equipment, coils 13 are wound around connection ends 111 of magnetic conductors 11, enabling magnetic conductors 11 to enhance the electromagnetic field intensity generated by coils 13. The coil rows 1b on two adjacent heating roller assemblies 1 correspond one-to-one to form a heating coil assembly. Within each heating coil assembly, the coils 13 located in different heating roller assemblies 1 correspond one-to-one. When the heating coil assembly is in the heating state, the electromagnetic field generated by the heating coil assembly can induce eddy currents within the battery 2 located between the two corresponding heating roller assemblies 1. These eddy currents can then directly heat the battery 2, effectively improving heating efficiency and reducing heating energy consumption. Furthermore, because the multiple coil rows 1b on the heating roller assemblies 1 are staggered along the circumference of the rotating shaft 12, each heating coil assembly, driven by the drive mechanism 4, alternately enters the heating state and heats different locations on the battery 2, achieving dynamic changes in the heating position to ensure uniform heating of the battery 2.

[0067] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0068] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery heating device, characterized in that: include: At least two heating roller groups, the heating roller groups include a rotating shaft, a magnet and a plurality of coils, the magnet is sleeved on the outer circumference of the rotating shaft, the magnet is provided with a plurality of connecting ends, each of the connecting ends is respectively wound with the coil, the plurality of connecting ends are arranged at intervals along the axial direction of the rotating shaft to form a connecting end column, the plurality of coils wound around the connecting end column form a coil column, and the plurality of coil columns are arranged at intervals along the circumference of the rotating shaft, the coils in two adjacent coil columns are staggered along the circumference of the rotating shaft; at least two heating roller groups are arranged in parallel and at intervals, and there is a gap between the two adjacent heating roller groups. A heating space is formed, and the heating space is used to place batteries that need to be heated; the coil rows in two adjacent heating roller groups correspond one to one to form a heating coil group, and the coils in the heating coil group located in different heating roller groups correspond one to one; the heating coil group has a heating state, and in the heating state, the plurality of coils in the heating coil group are all oriented toward the batteries located between the corresponding two heating roller groups, and the heating coil group is capable of forming an electromagnetic field in the heating space between the corresponding two heating roller groups, and the electromagnetic field is used to heat the batteries located in the corresponding heating space; a driving mechanism, the driving mechanism being in driving connection with at least two of the rotating shafts, and the driving mechanism being capable of driving at least two of the rotating shafts to rotate synchronously; When the driving mechanism drives at least two of the rotating shafts to rotate, the heating coil groups can alternately enter the heating state in sequence; The polarities of the two adjacent coils in each coil column are opposite, and the polarity of each coil is also opposite to the polarity of the corresponding coil in another coil column in the same heating coil group; The superposition of the electromagnetic fields generated by each heating coil group in a heating state can cover the battery located between the two heating roller groups corresponding to the heating coil group.

2. The battery heating device according to claim 1, characterized in that: The plurality of coil rows are evenly spaced apart along the circumference of the rotation shaft.

3. The battery heating device according to claim 1, characterized in that: In the heating state, the projections of two opposite coils in the heating coil group located in different heating roller groups overlap in the first direction, wherein the first direction is the thickness direction of the battery arranged between the two heating roller groups corresponding to the heating coil group.

4. The battery heating device according to claim 3, characterized in that: In the heating state, when the coils in the heating coil group extend along the first direction, the projection of the coils along the first direction on the battery located between the two heating roller groups corresponding to the heating coil group is a first projection, and the superposition of the first projections of each coil in one of the heating roller groups corresponding to the heating coil group can cover the battery located between the two heating roller groups corresponding to the heating coil group.

5. The battery heating device according to claim 1, characterized in that: The battery heating device further includes a support assembly, wherein the support assembly is used to support at least two of the heating roller groups, and the support assembly is rotatably connected to at least two of the rotating shafts.

6. The battery heating device according to claim 5, characterized in that: The support assembly includes two supporting frames arranged opposite to each other, the heating roller group is connected between the two supporting frames, and the rotating shaft in the heating roller group is rotatably connected to the two supporting frames.

7. The battery heating device according to claim 1, characterized in that: The magnetizer includes a plurality of sub-magnetizers which are sleeved on the outer circumference of the rotating shaft and arranged in sequence along the axial direction of the rotating shaft. The sub-magnetizers are each provided with a plurality of connection ends, and the plurality of connection ends are arranged at intervals along the axial direction of the rotating shaft to form a sub-connection end column, and a plurality of sub-connection end columns are arranged at intervals along the circumference of the rotating shaft, and the connection ends in two adjacent sub-connection end columns are staggered along the circumference of the rotating shaft; in the axial direction of the rotating shaft, the sub-connection end columns in the plurality of sub-magnetizers correspond one to one to form the connection end column.

8. The battery heating device according to any one of claims 1 to 7, characterized in that: The number of the heating roller groups is two.

9. The battery heating device according to claim 8, characterized in that: The driving mechanism includes a motor, a driving gear and two driven gears. The motor is drivingly connected to the driving gear. The two driven gears are drivingly connected to the driving gear. The driven gears are drivingly connected to the rotating shafts in a one-to-one correspondence.

10. A battery processing device, characterized in that: The battery heating device comprises the battery heating device according to any one of claims 1 to 9.

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