CN115084721A - Electricity core preheating device and battery production line - Google Patents

Abstract

The invention provides a cell preheating device and a battery production line, wherein the cell preheating device comprises: the preheating furnace comprises a shell, a roller and a heating structure, the roller is rotatably arranged in the shell, a material passing port is formed in the side wall of the shell and extends along the axial direction of the preheating furnace, a battery cell placing frame is arranged on the side wall of the roller, and the heating structure is suitable for heating the space in the shell. When the battery cell preheating device preheats the battery cell, the battery cell is placed into the battery cell placing frame of the roller from the material passing port of the shell. The heating structure then heats the space within the housing while the drum rotates. And after the preheating of the battery core is finished, taking out the battery core from the material passing port, and finishing the preheating process. In the structure, the rotary preheating furnace has the advantages that the structure is compact and simple, the occupied size is small, and the whole occupied area of a battery production line is favorably reduced, and the cost is reduced under the condition that the electric core is ensured to have a sufficiently long advancing path.

Description

Electricity core preheating device and battery production line

Technical Field

The invention relates to the technical field of battery production equipment, in particular to a cell preheating device and a battery production line.

Background

Cell preheating is one of the processes of battery manufacturing. In the electric core preheating process, a preheating tunnel furnace is needed to be used, the electric core is arranged on the fixed jig and is circulated in the preheating tunnel furnace, and the preheating tunnel furnace can heat the electric core through a hot air circulation type, a contact type and an electromagnetic induction type. However, the existing preheating tunnel furnace has long tunnel length, so that the whole occupied space of the equipment is large and the internal structure is complex.

Disclosure of Invention

Therefore, the invention aims to overcome the defects of large occupied space and complex internal structure of the cell preheating tunnel furnace in the prior art, and provides a cell preheating device and a battery production line.

In order to solve the above problem, the present invention provides a cell preheating device, including: the preheating furnace comprises a shell, a roller and a heating structure, the roller is rotatably arranged in the shell, a material passing port is formed in the side wall of the shell and extends along the axial direction of the preheating furnace, a battery cell placing frame is arranged on the side wall of the roller, and the heating structure is suitable for heating the space in the shell.

Optionally, the preheating furnace is of a horizontal structure, the drum comprises a drum body, air holes are formed in the wall of the drum body, the battery cell placing frame is arranged on the outer side wall of the drum body, and the heating structure is arranged in the drum body.

Optionally, the punishment in advance mouth includes feed inlet and the discharge gate that the interval set up, and electric core preheating device still includes: the feeding mechanism is arranged on one side of the preheating furnace and corresponds to the feeding hole, and the feeding mechanism is suitable for placing the battery cell on the battery cell placing frame from the feeding hole; and the blanking mechanism is arranged on the other side of the preheating furnace and corresponds to the discharge hole, and the blanking mechanism is suitable for taking out the battery cell from the discharge hole.

Optionally, the battery cell placing frame comprises a plurality of supporting rods, and the plurality of supporting rods form a transverse and longitudinal staggered structure on the barrel body.

Optionally, the cartridge comprises: the barrel comprises a plurality of annular plates, the plurality of annular plates are arranged along the axial interval of the barrel body, a plurality of connecting plates extend along the axial direction of the barrel body, the connecting plates are connected with the annular plates, the annular plates are arranged along the circumferential interval of the barrel body, and a plurality of supporting rods are arranged on each connecting plate at intervals.

Optionally, the cylinder is formed by connecting two ends of a bent plate, the plate is provided with an air hole, the plate is provided with a threaded hole, the support rod is provided with an external thread section, and the external thread section is arranged in the threaded hole in a penetrating mode.

Optionally, the heating structure includes a fan, a heater and a filter, wherein the filter is disposed at an air inlet of the fan, and the heater is disposed at an air outlet of the fan.

Optionally, the heating structure further comprises an air guide cover, and an air duct is formed between the air guide cover and the inner side wall of the cylinder.

Optionally, feed mechanism and unloading mechanism all include: a frame; and the clamping jaws are movably arranged on the rack and are arranged at intervals along the axial direction of the preheating furnace.

Optionally, the cell preheating device further includes a driving mechanism, and the driving mechanism is adapted to drive the drum to rotate.

Optionally, the drive mechanism comprises: ratchet: is arranged on the outer side wall of the roller; the driving cylinder is arranged in the shell; and the pawl is connected with the push rod of the driving cylinder and is suitable for being matched with the ratchet wheel.

Optionally, the preheater is vertical structure, and the electric core rack includes the tray, and the tray rotationally sets up on the cylinder, and electric core preheating device still includes unloading mechanism, and unloading mechanism corresponds the setting with the punishment in advance mouth, and unloading mechanism is suitable for placing electric core on the tray from the punishment in advance mouth, perhaps is suitable for taking out electric core from the punishment in advance mouth.

Optionally, the tray is a plurality of trays, and the plurality of trays are arranged at intervals along the circumferential direction of the drum.

Optionally, the tray is multi-layered.

The invention also provides a battery production line which comprises the battery cell preheating device.

The invention has the following advantages:

by utilizing the technical scheme of the invention, when the battery cell preheating device preheats the battery cell, the battery cell is placed on the battery cell placing frame of the roller from the material passing port of the shell. The heating structure then heats the space within the housing while the drum rotates. And after the preheating of the battery core is finished, taking out the battery core from the material passing port to finish the preheating process. In the structure, the rotary preheating furnace has the advantages that the structure is compact and simple, the occupied size is small, and the whole occupied area of a battery production line is favorably reduced, and the cost is reduced under the condition that the electric core is ensured to have a sufficiently long advancing path. Therefore, the technical scheme of the invention overcomes the defects of large occupied space and complex internal structure of the cell preheating tunnel furnace in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 shows a schematic structural diagram of a first embodiment of a cell preheating device according to the present invention;

FIG. 2 shows an enlarged schematic view at A in FIG. 1;

FIG. 3 shows an enlarged schematic view at B in FIG. 1;

fig. 4 is a schematic structural diagram of a drum of the cell preheating device in fig. 1;

FIG. 5 shows an enlarged schematic view at C of FIG. 4;

FIG. 6 shows a schematic cross-sectional view of the drum of FIG. 4 (heating structure not shown);

FIG. 7 shows an enlarged schematic view at D of FIG. 6;

FIG. 8 shows a schematic side view of the drum of FIG. 4;

fig. 9 is a schematic view showing an internal structure of the drum of fig. 4;

FIG. 10 shows a schematic cross-sectional view of the drum of FIG. 4 (showing the heating structure);

FIG. 11 is a schematic view showing the arrangement of a plurality of fans of the drum of FIG. 10;

fig. 12 is a schematic structural diagram of a feeding mechanism or a discharging mechanism of the cell preheating device in fig. 1;

fig. 13 is a schematic structural diagram of a drum of a second embodiment of the cell preheating device according to the present invention;

FIG. 14 shows an enlarged schematic view at E in FIG. 13;

fig. 15 is a schematic structural diagram of a preheating furnace according to a third embodiment of the cell preheating device of the present invention; and

fig. 16 shows a schematic view of the internal structure of the preheating furnace in fig. 15 from a top view.

Description of reference numerals:

1. an electric core; 10. preheating a furnace; 11. a housing; 12. a drum; 121. a barrel; 1211. an annular plate; 1212. a connecting plate; 122. air passing holes; 13. a heating structure; 131. a fan; 132. a heater; 133. a filter; 134. a wind scooper; 20. a material passing port; 21. a feed inlet; 22. a discharge port; 30. placing a battery cell rack; 31. a support rod; 32. a tray; 40. a feeding mechanism; 50. a blanking mechanism; 60. a frame; 70. a clamping jaw; 80. a drive mechanism; 81. a ratchet wheel; 82. a drive cylinder; 83. a pawl.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The first embodiment is as follows:

as shown in fig. 1 to 4, the cell preheating device according to the first embodiment includes a preheating furnace 10. The preheating furnace 10 comprises a housing 11, a roller 12 and a heating structure 13, wherein the roller 12 is rotatably disposed in the housing 11, a material passing opening 20 is disposed on a side wall of the housing 11, and the material passing opening 20 extends along an axial direction of the preheating furnace 10. The side wall of the drum 12 is provided with a battery cell placing frame 30, and the heating structure 13 is suitable for heating the space in the casing 11.

With the technical scheme of this embodiment, when the electric core preheating device preheats the electric core 1, the electric core 1 is put into the electric core placing frame 30 of the drum 12 from the material passing port 20 of the casing 11. The heating structure 13 then heats the space inside the housing 11 while the drum 12 rotates. And after the preheating of the battery cell 1 is finished, taking out the battery cell from the material passing port 20 to finish the preheating process. In the structure, the rotary preheating furnace has the advantages that the structure is compact and simple, the occupied size is small, and the whole occupied area of a battery production line is favorably reduced, and the cost is reduced under the condition that the electric core 1 is ensured to have a sufficiently long advancing path. Therefore, the technical scheme of the embodiment overcomes the defects that the cell preheating tunnel furnace in the prior art is large in occupied space and complex in internal structure.

The feed-through opening 20 is a through-opening structure through which the cell 1 can pass. In this embodiment, the material passing port 20 extends along the axial direction of the preheating furnace 10, and is formed in an elongated structure. Further, the battery cell 1 is inserted into the housing 11 in the transverse direction, so that the width of the material passing opening 20 is larger than the thickness of the battery cell 1.

Further, as shown in fig. 2, the battery cell 1 may be fed into the casing 11 through the material passing port 20 by a robot, a clamping jaw, or manually, and placed on the battery cell placing frame 30. When the drum 12 rotates, the battery cell 1 can be driven to rotate synchronously by the battery cell placing frame 30. After the preheating of the battery cell 1 is finished, the battery cell 1 can be taken down from the battery cell placing frame 30 in the above manner, and the blanking is performed through the material passing port 20.

As shown in fig. 1 and 2, the drum 12 in the present embodiment has a cylindrical shape, and accordingly, the housing 11 has a cylindrical structure, and the drum 12 is inserted into the housing 11, so that a space enclosed by the two is cylindrical.

The cylindrical drum 12 and the cylindrical shell 11 described above have the following advantages:

1. the space on the outer surface of the roller 12 can be fully utilized, the battery cell placing rack 30 is arranged on the outer wall of the roller 12 as much as possible, the occupied area of the battery cell preheating device is reduced, and the cost is saved;

2. the cylindrical air duct is beneficial to the uniform distribution of hot air flow, reduces the wind resistance and increases the heat exchange efficiency;

3. the cylindrical air channel enables the temperature uniformity to be better, and the temperature detection and control are more convenient.

Further, at least one end of the housing 11 is open in the axial direction of the housing 11, so that the drum 12 can be pulled out with respect to the housing 11, thereby facilitating the maintenance of the drum 12.

Of course, in some embodiments, not shown, the cross-section of the housing 11 may also be provided as a square structure.

As shown in fig. 1, 4 and 5, in the present embodiment, the preheating furnace 10 has a horizontal structure. The drum 12 includes a drum body 121, a gas passing hole 122 is formed in a wall of the drum body 121, the battery cell placing rack 30 is disposed on an outer side wall of the drum body 121, and the heating structure 13 is disposed in the drum body 121.

Specifically, the above-described "horizontal structure" means that the central axis of the preheating furnace 10 is disposed horizontally (i.e., in the manner shown in fig. 1). The inside accommodation space that has of barrel 121, heating structure 13 sets up in barrel 121, and the air that heating structure 13 heated can distribute to the outside of barrel 121 through air vent 122 to the realization with the heat transfer of electric core 1, play the effect of preheating to electric core 1.

In some other embodiments, the heating structure 13 may also be provided on the inner side wall of the housing 11. In this embodiment, the cylinder 121 does not need to be hollow, and the air passing hole 122 does not need to be formed in the cylinder 121. This embodiment enables to reduce the size of the drum 12 and to simplify the process thereof.

As shown in fig. 1 to fig. 3, in the technical solution of the present embodiment, the material passing hole 20 includes a material inlet 21 and a material outlet 22 which are arranged at an interval. The cell preheating device further comprises a feeding mechanism 40 and a discharging mechanism 50. The feeding mechanism 40 is disposed on one side of the preheating furnace 10 and corresponds to the feeding port 21, and the feeding mechanism 40 is adapted to place the battery cell 1 on the battery cell placement frame 30 from the feeding port 21. The blanking mechanism 50 is arranged on the other side of the preheating furnace 10 and corresponds to the discharge port 22, and the blanking mechanism 50 is suitable for taking out the battery cell 1 from the discharge port 22.

Specifically, the inlet port 21 and the outlet port 22 are oppositely disposed with respect to the central axis of the housing 11, and the line connecting the inlet port 21 and the outlet port 22 is horizontal. The feeding mechanism 40 and the discharging mechanism 50 are respectively arranged on two sides of the preheating furnace 10, and after the battery cell 1 can be grabbed from the conveying line by the feeding mechanism 40, the battery cell 1 is sent into the casing 11 from the feeding hole 21 and is prevented from going onto the battery cell placing frame 30. After the preheating is finished, the blanking mechanism 50 can take out the battery cell 1 from the battery cell placing frame 30 and perform blanking from the discharge port 22.

Further, because the drum 12 rotates in the circumferential direction, in order to prevent the battery cell 1 from falling from the battery cell placement frame 30, in this embodiment, after the battery cell 1 is placed on the battery cell placement frame 30, the drum 12 rotates upwards by 180 degrees to move the battery cell 1 to the discharge port 22, and at this time, the battery cell 1 can be discharged through the discharging mechanism 50. That is, after the battery cell 1 is loaded, the battery cell is discharged after being half-circled in the casing 11.

Of course, in some embodiments, which are not shown, if a fixing mechanism is provided on the battery cell placing frame 30, so that the battery cell 1 can be fixed on the battery cell placing frame 30, the battery cell 1 may also perform multiple turns in the casing 11.

As shown in fig. 4 and fig. 5, in the technical solution of the present embodiment, the battery cell placing rack 30 includes a plurality of support rods 31, and the plurality of support rods 31 form a horizontally and vertically staggered structure on the barrel 121. Specifically, the support rod 31 is a coated rod. Further, the above-mentioned "staggered structure in the horizontal and vertical directions" means that a plurality of support rods 31 form a plurality of rows and columns. As will be understood by those skilled in the art in conjunction with fig. 5, one battery cell 1 may be supported by at least two support rods 31.

As shown in fig. 6 and 7, in the solution of the present embodiment, the cylinder 121 includes a plurality of annular plates 1211 and a plurality of connecting plates 1212. Wherein, a plurality of annular plates 1211 are provided at intervals in the axial direction of the cylinder 121. A plurality of connecting plates 1212, the connecting plates 1212 extend along the axial direction of the cylinder 121, and the connecting plates 1212 are connected with a plurality of annular plates 1211, the plurality of annular plates 1211 are arranged at intervals along the circumferential direction of the cylinder 121, and a plurality of support rods 31 are arranged at intervals on each connecting plate 1212.

Specifically, the annular plate 1211 is in a circular configuration and the web 1212 is in a linear configuration. The plurality of annular plates 1211 and the plurality of connecting plates 1212 are alternately arranged and form the cylindrical body 121. Further, the adjacent two annular plates 1211 and the adjacent two connecting plates 1212 define a square through opening therebetween, i.e., the air passing hole 122 is formed.

Further, the annular plate 1211 and the connecting plate 1212 may be connected by welding or by fastening.

Further, as can be seen from fig. 7, a plurality of support rods 31 are disposed on the outer side of each connecting plate 1212, and the plurality of support rods 31 are disposed at intervals along the extending direction of the connecting plate 1212. The support rod 31 and the connecting plate 1212 may be integrally formed, or the former may be prevented from being coupled to the latter by welding, fastening, or the like.

Preferably, a protection member (for example, plastic foam) is further disposed on the outer side of the connecting plate 1212, and the protection member can prevent the battery cell 1 from being damaged by bumping.

As shown in fig. 8, in the technical solution of the present embodiment, the heating structure 13 includes a fan 131, a heater 132 and a filter 133, wherein the filter 133 is disposed at an air inlet of the fan 131, and the heater 132 is disposed at an air outlet of the fan 131.

Specifically, the fan 131 is an axial flow fan (or other type of fan), and the air inlet and outlet direction of the fan 131 is the radial direction of the drum 12. When the fan 131 works, the airflow is filtered by the filter 133, and then enters the air inlet of the fan 131 and is sent out from the air outlet. The outlet air is heated by the heater 132 and then flows from the air vent 122 to the outside of the drum 12, thereby exchanging heat with the battery cell 1. And after heat exchange of hot air flow, the circulation is carried out.

Preferably, the heater 132 may be a fin heat exchanger.

As shown in fig. 9, since the axial length of the drum 12 is long, in order to ensure that the hot air is uniformly distributed in the housing 11, a plurality of fans 131 are provided in the present embodiment, and the plurality of fans 131 are provided at intervals along the axial direction of the drum 12. And as shown in fig. 11, the mounting directions of two adjacent fans 131 may be set oppositely, so that a greater number of fans may be disposed in the axial direction.

As shown in fig. 8, in the technical solution of the present embodiment, the heating structure 13 further includes an air guiding cover 134, and an air duct is formed between the air guiding cover 134 and the inner side wall of the cylinder 121. Specifically, the wind scoopers 134 are two in position, the inner side of the wind scooper 134 is a plane, the outer side of the wind scooper 134 is an arc-shaped surface, and the arc-shaped surface is matched with the inner wall of the roller 12 and forms an air duct in a surrounding mode. The fan 131, the heater 132, and the filter 133 are disposed between the two wind scoops 134.

As can be seen from fig. 8, the lower ends of the two wind scoops 134 form the wind inlets, and the upper ends form the wind outlets. An annular air duct is defined between the outer side of the air guiding cover 134 and the inner wall of the drum 12, so that the hot air flow is distributed more uniformly in the drum 12.

Further, the heating structure 13 may further include a temperature control detection module, which may detect the temperature inside the casing 11, and control the wind speed of the fan 131 and the temperature of the heater 132 according to the real-time temperature, so as to enable the temperature inside the preheating furnace 10 to reach a constant temperature state.

As shown in fig. 12, in the solution of the present embodiment, the feeding mechanism 40 and the blanking mechanism 50 each include a frame 60 and a plurality of clamping jaws 70. Wherein the holding jaw 70 is movably disposed on the frame 60, and a plurality of holding jaws 70 are disposed at intervals along the axial direction of the preheating furnace 10.

Specifically, the plurality of clamping jaws 70 may simultaneously clamp the plurality of battery cells 1, and make the plurality of battery cells 1 horizontally disposed and spaced. A plurality of clamping jaws 70 can move on all directions through the sharp module to the realization is taken off from the transfer chain or is placed electric core 1, sends electric core 1 into feed inlet 21 in or takes out electric core 1 from discharge gate 22 and so on.

As shown in fig. 1 to fig. 3, in the technical solution of this embodiment, the cell preheating device further includes a driving mechanism 80, and the driving mechanism 80 is adapted to drive the drum 12 to rotate. Specifically, the driving mechanism 80 can drive the drum 12 to rotate in steps. That is, when the drum 12 rotates to a certain position, the drum 12 stops, and after the drum stops for a certain time, the drum 12 continues to rotate to the next position, so that the charging mechanism 40 and the discharging mechanism 50 are convenient to charge and discharge the battery cell 1.

As shown in fig. 3, in the present embodiment, the driving mechanism 80 includes a ratchet 81, a pawl 83, and a driving cylinder 82. Wherein the ratchet 81 is provided on the outer sidewall of the drum 12. The drive cylinder 82 is disposed within the housing 11. Pawl 83 is connected to the push rod of drive cylinder 82 and pawl 83 is adapted to engage ratchet wheel 81.

Specifically, the driving cylinder 82 can reciprocally push the pawl 83 to engage with the ratchet 81, thereby achieving the stepwise rotation of the drum 12. Of course, the driving mechanism 80 may alternatively be other conventional power mechanisms, such as a stepper motor.

Preferably, the driving cylinder 82 is a cylinder, and the cylinder uses compressed gas as a power source, so that the overall power consumption of the cell preheating device can be reduced.

The embodiment also provides a battery production line, which comprises the battery cell preheating device.

Example two

As shown in fig. 13 and 14, the cell preheating device of the second embodiment is different from the first embodiment in the manner of forming the cylinder 121. Specifically, the cylinder 121 is formed by bending a plate and connecting both ends of the bent plate, the plate is provided with the air passing hole 122, the plate is provided with a threaded hole, and the support rod 31 is provided with an external thread section which is inserted into the threaded hole.

The cylinder 121 in this embodiment is formed from a single piece of sheet material. The support rod 31 is connected to the panel by a screw structure. And preferably, the bottom of the support rod 31 is provided with a protective member (e.g., plastic foam) so as to prevent the battery cell 1 from being damaged by the knock.

EXAMPLE III

As shown in fig. 15 and 16, the cell preheating device according to the third embodiment is different from the first embodiment in that the preheating furnace 10 has a vertical structure. And the battery cell placing frame 30 includes a tray 32, and the tray 32 is rotatably disposed on the drum 12. The cell preheating device further comprises a feeding and discharging mechanism, the feeding and discharging mechanism is arranged corresponding to the material passing port 20, and the feeding and discharging mechanism is suitable for placing the cell 1 on the tray 32 from the material passing port 20 or taking the cell 1 out from the material passing port 20.

Specifically, the above-described "vertical structure" means that the axial direction of the preheating furnace 10 is arranged in the vertical direction (i.e., the position shown in fig. 15). Since the preheating furnace 10 is of a vertical structure, the tray 32 can be rotated in a horizontal direction within the preheating furnace 10. Meanwhile, the tray 32 can rotate about its own axis, so that the battery cell 1 performs both revolution and rotation motions simultaneously in the preheating furnace 10.

Further, in the present embodiment, only one material passing opening 20 is disposed on the housing 11, and correspondingly, only one material loading and unloading mechanism (not shown) is disposed. Specifically, after the loading and unloading mechanism places the battery cell 1 on the tray 32 from the material passing port 20, the drum 12 rotates in the casing 11, and performs heat exchange on the battery cell 1. After the drum 12 rotates for one or more circles in the casing 11, the charging and discharging mechanism takes out the battery core from the material passing port 20 and transfers the battery core to the next station.

As shown in fig. 16, the number of the trays 32 in the present embodiment is plural, and the plural trays 32 are provided at intervals in the circumferential direction of the drum 12.

As shown in fig. 15, in the present embodiment, the tray 32 has a plurality of layers. Further, each layer includes a plurality of trays 32. The feeding and discharging mechanism can independently perform feeding of the battery cell 1 or discharging of the battery cell 1 on each layer.

Other structures of the cell preheating device in the third embodiment are the same as those of the first embodiment, and are not described herein again.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (15)

1. The utility model provides a battery cell preheating device which characterized in that includes:

preheating furnace (10), preheating furnace (10) include casing (11), cylinder (12) and heating structure (13), cylinder (12) rotationally set up in casing (11), be provided with drain hole (20) on the lateral wall of casing (11), drain hole (20) are followed the axial extension of preheating furnace (10), be provided with electric core rack (30) on the lateral wall of cylinder (12), heating structure (13) are suitable for right space in casing (11) heats.

2. The cell preheating device according to claim 1, wherein the preheating furnace (10) is of a horizontal structure, the drum (12) comprises a drum body (121), air passing holes (122) are formed in the wall of the drum body (121), the cell placing frame (30) is arranged on the outer side wall of the drum body (121), and the heating structure (13) is arranged in the drum body (121).

3. The cell preheating device according to claim 2, wherein the feed opening (20) comprises a feed opening (21) and a discharge opening (22) which are arranged at intervals, and the cell preheating device further comprises:

the feeding mechanism (40) is arranged on one side of the preheating furnace (10) and corresponds to the feeding hole (21), and the feeding mechanism (40) is suitable for placing the battery cell (1) on the battery cell placing frame (30) from the feeding hole (21);

the blanking mechanism (50) is arranged on the other side of the preheating furnace (10) and corresponds to the discharge hole (22), and the blanking mechanism (50) is suitable for taking the battery cell (1) out of the discharge hole (22).

4. The cell preheating device according to claim 2, wherein the cell placing frame (30) comprises a plurality of support rods (31), and the plurality of support rods (31) form a criss-cross structure on the barrel (121).

5. The cell preheating device according to claim 4, wherein the drum (121) comprises:

a plurality of annular plates (1211), the plurality of annular plates (1211) being arranged at intervals in the axial direction of the cylinder (121),

a plurality of connecting plates (1212), the connecting plates (1212) extend along the axial direction of the cylinder (121), the connecting plates (1212) are connected with a plurality of annular plates (1211), the annular plates (1211) are arranged at intervals along the circumferential direction of the cylinder (121), and a plurality of support rods (31) are arranged on each connecting plate (1212) at intervals.

6. The cell preheating device according to claim 4, wherein the barrel (121) is formed by bending a plate and connecting two ends of the plate, the plate is provided with the air passing hole (122), the plate is provided with a threaded hole, the support rod (31) is provided with an external threaded section, and the external threaded section is arranged in the threaded hole in a penetrating manner.

7. The cell preheating device according to any one of claims 2 to 6, wherein the heating structure (13) comprises a blower (131), a heater (132), and a filter (133), wherein the filter (133) is disposed at an air inlet of the blower (131), and the heater (132) is disposed at an air outlet of the blower (131).

8. The cell preheating device according to claim 7, wherein the heating structure (13) further comprises an air guide cover (134), and an air duct is formed between the air guide cover (134) and the inner side wall of the barrel (121).

9. The cell preheating device according to claim 3, wherein the feeding mechanism (40) and the blanking mechanism (50) each comprise:

a frame (60);

a plurality of clamping jaws (70) movably arranged on the frame (60), wherein the clamping jaws (70) are arranged at intervals along the axial direction of the preheating furnace (10).

10. The cell preheating device according to any one of claims 2 to 6, further comprising a driving mechanism (80), wherein the driving mechanism (80) is adapted to drive the drum (12) to rotate.

11. The cell preheating device according to claim 10, wherein the drive mechanism (80) comprises:

ratchet (81): is arranged on the outer side wall of the drum (12);

a drive cylinder (82) disposed within the housing (11);

a pawl (83) connected to a push rod of the drive cylinder (82), the pawl (83) adapted to cooperate with the ratchet wheel (81).

12. The cell preheating device according to claim 1, wherein the preheating furnace (10) is of a vertical structure, the cell placing frame (30) includes a tray (32), the tray (32) is rotatably disposed on the drum (12), the cell preheating device further includes a loading and unloading mechanism, the loading and unloading mechanism corresponds to the material passing opening (20), and the loading and unloading mechanism is suitable for placing the cell (1) on the tray (32) from the material passing opening (20) or taking the cell (1) out from the material passing opening (20).

13. The cell preheating device according to claim 12, wherein the tray (32) is plural, and the plural trays (32) are arranged at intervals along the circumferential direction of the drum (12).

14. The cell preheating device according to claim 12 or 13, characterized in that the tray (32) is multi-layered.

15. A battery production line, characterized by comprising the cell preheating device of any one of claims 1 to 14.

Images