Belt storage mechanism, tension control system and pole piece production equipment

Abstract

The utility model provides a belt storage mechanism, a tension control system and a pole piece production device, the pole piece production device comprises a front device and a rear device, and the front device and the rear device are connected through the belt storage mechanism; each of the front equipment and the rear equipment comprises a traction mechanism; the winding end of the belt storage mechanism is connected with the traction mechanism of the front equipment, and the unwinding end of the belt storage mechanism is connected with the traction mechanism of the rear equipment; the belt storage mechanism comprises a swing roller assembly and / or a translation roller assembly; the swing roller assembly comprises a swing arm, one end of the swing arm is rotatably arranged, and a swing roller is arranged at the other end of the swing arm. The translation roller assembly comprises an upper-layer support and a lower-layer support, the upper-layer support and the lower-layer support are each provided with a plurality of translation rollers in parallel, and the translation rollers are arranged at intervals in an up-down staggered mode; the traction mechanism comprises a driving roller and a driven roller which are arranged up and down. By the adoption of the device, the problem that in the existing pole piece manufacturing technology, the pole piece processing quality is affected due to the fact that tension distribution of the pole pieces is too uneven when the pole pieces are subjected to two adjacent working sections can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a tape storage mechanism, a tension control system and a pole piece production device. Background Art

[0002] The manufacture of pole pieces is an important part of the overall manufacturing process of lithium batteries. The main processes of pole piece manufacture include unwinding, coating, drying, rolling, slitting, sheet making, die cutting and winding, etc. The equipment involved mainly includes unwinding machines, coating machines, ovens, rolling presses, slitting machines, sheet making machines, die cutting machines, winding machines, etc. At present, the existing pole piece manufacturing process is carried out by the production equipment of a single section separately for the corresponding section. Although this method can ensure the production quality of each section, the production equipment required occupies a large space, and the speed difference of the pole piece between two adjacent sections is too large, so that the tension distribution of the pole piece between two adjacent sections is too uneven, affecting the processing quality of the pole piece. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a tape storage mechanism, a tension control system and a pole piece production device to alleviate the problem that the existing pole piece manufacturing technology affects the processing quality of the pole piece due to the too uneven tension distribution of the pole piece between two adjacent sections.

[0004] In a first aspect, an embodiment of the utility model provides a tape storage mechanism, which is applied to a pole piece production device. The pole piece production device includes a front device and a rear device, and the front device and the rear device are connected by the tape storage mechanism; both the front device and the rear device include a traction mechanism; the winding end of the tape storage mechanism is connected to the traction mechanism of the front device, and the unwinding end of the tape storage mechanism is connected to the traction mechanism of the rear device; the tape storage mechanism includes a swing roller assembly and / or a translation roller assembly; the swing roller assembly includes a swing arm, one end of the swing arm is rotatably arranged, and a swing roller is arranged at the other end of the swing arm; the translation roller assembly includes an upper support and a lower support arranged opposite to each other up and down, and a plurality of translation rollers are arranged in parallel on both the upper support and the lower support, and the translation rollers are arranged at intervals in a staggered manner up and down; the traction mechanism includes a driving roller and a driven roller arranged up and down.

[0005] As a possible implementation, the tape storage mechanism includes the translation roller assembly and the swing roller assembly connected in sequence.

[0006] As a possible implementation, the winding end of the translation roller assembly is connected to the traction mechanism of the front device, the unwinding end of the translation roller assembly is connected to the winding end of the swing roller assembly, and the unwinding end of the swing roller assembly is connected to the traction mechanism of the rear device; or, the winding end of the swing roller assembly is connected to the traction mechanism of the front device, the unwinding end of the swing roller assembly is connected to the winding end of the translation roller assembly, and the unwinding end of the translation roller assembly is connected to the traction mechanism of the rear device.

[0007] As a possible implementation, the swing roller assembly further includes a first motor, an output shaft of the first motor is fixedly connected to one end of the swing arm, and the other end of the swing arm is fixedly connected to a rotating shaft of the swing roller.

[0008] As a possible implementation, the translation roller assembly further includes a second motor, and the upper bracket or the lower bracket is driven by the second motor to move vertically.

[0009] As a possible implementation, the second motor is a push rod motor; the second motor is installed on the lower bracket and a push rod of the second motor is fixedly connected to the upper bracket, or the second motor is installed on the upper bracket and the push rod of the second motor is fixedly connected to the lower bracket.

[0010] As a possible implementation, the traction mechanism further includes a third motor, and an output shaft of the third motor is fixedly connected to a rotating shaft of the driving roller.

[0011] As a possible implementation, the swing roller assembly further includes two limit blocks, and the two limit blocks are fixedly arranged along the swinging direction of the swing arm.

[0012] In a second aspect, an embodiment of the present invention further provides a tension control system applied to a pole piece production device. The tension control system includes a detection device, a control device, and the tape storage mechanism described in the first aspect above. The detection device is respectively connected to the tape storage mechanism and the control device, and the control device is connected to the tape storage mechanism.

[0013] In a third aspect, an embodiment of the present invention further provides a pole piece production device. The pole piece production device includes a front device and a rear device, and the front device and the rear device are connected by the tape storage mechanism described in the first aspect above.

[0014] An accumulator mechanism, a tension control system and a pole piece production device provided by an embodiment of the present utility model. The pole piece production device includes a front device and a rear device, and the front device and the rear device are connected through the accumulator mechanism; both the front device and the rear device include a traction mechanism; the winding end of the accumulator mechanism is connected to the traction mechanism of the front device, and the unwinding end of the accumulator mechanism is connected to the traction mechanism of the rear device; the accumulator mechanism includes a swing roller assembly and / or a translation roller assembly; the swing roller assembly includes a swing arm, one end of the swing arm is rotatably arranged, and a swing roller is arranged at the other end of the swing arm; the translation roller assembly includes an upper bracket and a lower bracket, and a plurality of translation rollers are arranged in parallel on both the upper bracket and the lower bracket, and the translation rollers are arranged in a staggered and spaced manner up and down; the traction mechanism includes a driving roller and a driven roller arranged up and down. By adopting the above technology, the tension of the pole piece during adjacent two working sections can be adjusted by using the swing roller assembly and / or the translation roller assembly, thereby alleviating the problem that the existing pole piece manufacturing technology affects the processing quality of the pole piece due to the uneven tension distribution of the pole piece during adjacent two working sections.

[0015] Other features and advantages of the present utility model will be described in the following description, and in part, will be obvious from the description, or will be understood by implementing the present utility model. The purpose and other advantages of the present utility model are achieved and obtained by the structure specifically pointed out in the description, the claims and the drawings.

[0016] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a partial schematic diagram of a pole piece production device in an embodiment of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of an accumulator mechanism in an embodiment of the present utility model;

[0020] Figure 3 It is a structural example diagram of an accumulator mechanism in an embodiment of the present utility model;

[0021] Figure 4 It is another structural example diagram of an accumulator mechanism in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of a tension control system in an embodiment of the present utility model.

[0023] Icons: 10 - front equipment; 20 - rear equipment; 100 - tape storage mechanism; 110 - swing roller assembly; 111 - swing arm; 112 - swing roller; 113 - first motor; 120 - translation roller assembly; 121 - upper bracket; 122 - lower bracket; 123 - translation roller; 124 - second motor; 200 - detection device; 300 - control device; 31 - first intermediate roller; 32 - second intermediate roller; 33 - driving roller; 34 - driven roller; 35 - third motor; 36 - limit block; 41 - third intermediate roller; 42 - fourth intermediate roller; 43 - fifth intermediate roller; 44 - sixth intermediate roller; 45 - seventh intermediate roller. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] See Figure 1 As shown, the pole piece production equipment may include the front equipment 10, the rear equipment 20 and the whole machine equipment of other work sections. The front equipment 10 and the rear equipment 20 are connected through the tape storage mechanism 100; both the front equipment 10 and the rear equipment 20 include a traction mechanism; the winding end of the tape storage mechanism 100 is connected to the traction mechanism of the front equipment 10, and the unwinding end of the tape storage mechanism 100 is connected to the traction mechanism of the rear equipment 20.

[0026] Among them, the work section corresponding to the front equipment 10 is adjacent to the work section corresponding to the rear equipment 20; for example, for two adjacent work sections of drying and rolling, the front equipment 10 may be a drying device, and the rear equipment 20 may be a rolling device; for another example, for two adjacent work sections of rolling and slitting, the front equipment 10 may be a rolling device, and the rear equipment 20 may be a slitting device; the front equipment and the rear equipment can be specifically determined according to actual needs and are not limited thereto. The above-mentioned traction mechanism may include a driving roller and a driven roller arranged up and down, and the pole piece can be transported forward between the driving roller and the driven roller, so as to ensure the stability of the pole piece transportation direction.

[0027] When the polar plate production equipment is working, under the traction of the traction mechanism, the polar plate can enter the rear equipment 20 from the front equipment 10 through the tape storage mechanism 100, and a certain length of the polar plate can be stored through the tape storage mechanism 100. Based on this, the tension of the polar plate during two adjacent working sections can be achieved by adjusting the length of the polar plate stored in the tape storage mechanism 100.

[0028] The tape storage mechanism can be applied to the polar plate production equipment. Refer to Figures 2 to 3 As shown, the tape storage mechanism may include a swing roller assembly 110 and / or a translation roller assembly 120; the swing roller assembly 110 may include a swing arm 111, one end of the swing arm 111 is rotatably arranged, and a swing roller 112 is arranged at the other end of the swing arm 111; the translation roller assembly 120 may include an upper support 121 and a lower support 122 arranged opposite to each other up and down. A plurality of translation rollers 123 are arranged in parallel on both the upper support 121 and the lower support 122, and the translation rollers 123 are arranged at staggered intervals up and down. Under the traction of the traction mechanism, after passing through the working section of the front equipment 10, the polar plate enters the tape storage mechanism 100, and the tension of the polar plate during two adjacent working sections is adjusted through the swing roller 112 and / or the translation roller 123.

[0029] By adopting the above tape storage mechanism, the tension of the polar plate during two adjacent working sections can be adjusted by using the swing roller assembly and / or the translation roller assembly, thereby alleviating the problem that the existing polar plate manufacturing technology affects the processing quality of the polar plate due to the uneven distribution of the tension of the polar plate during two adjacent working sections.

[0030] As a possible implementation manner, refer to Figure 1 and Figure 2 As shown, the tape storage mechanism 100 may include a swing roller assembly 110 and a translation roller assembly 120 connected in sequence. Based on this, the tape storage mechanism 100 can adopt one of the following two connection structures:

[0031] (1) The winding end of the translation roller assembly 120 is connected to the traction mechanism of the front equipment 10, the unwinding end of the translation roller assembly 120 is connected to the winding end of the swing roller assembly 110, and the unwinding end of the swing roller assembly 110 is connected to the traction mechanism of the rear equipment 20. Under the traction of the traction mechanism, after passing through the working section of the front equipment 10, the polar plate enters the tape storage mechanism 100, and the tension of the polar plate during two adjacent working sections is adjusted through the translation roller 123 and the swing roller 112 in sequence.

[0032] (2) The winding end of the swing roller assembly 110 is connected to the traction mechanism of the front equipment 10, the unwinding end of the swing roller assembly 110 is connected to the winding end of the translation roller assembly 120, and the unwinding end of the translation roller assembly 120 is connected to the traction mechanism of the rear equipment 20. Under the traction of the traction mechanism, after passing through the working section of the front equipment 10, the polar plate enters the tape storage mechanism 100, and the tension of the polar plate during two adjacent working sections is adjusted through the swing roller 112 and the translation roller 123 in sequence.

[0033] As a possible implementation, refer to Figure 2 As shown, the swing roller assembly 110 may further include a first motor 113. The output shaft of the first motor 113 is fixedly connected to one end of the swing arm 111, and the other end of the swing arm 111 is fixedly connected to the rotating shaft of the swing roller 112. The swing arm 111 can be driven to swing by the first motor 113, so as to change the position of the swing roller 112, thereby realizing the tension adjustment of the pole piece when passing through two adjacent work sections.

[0034] As a possible implementation, refer to Figure 2 As shown, the translation roller assembly 120 may further include a second motor 124 to drive the upper bracket 121 or the lower bracket 122 to move vertically. After the pole piece enters the translation roller assembly 120, it passes through the translation rollers 123 of different layer brackets in an interleaved manner and then leaves the translation roller assembly 120. The second motor 124 can be used to drive the upper bracket 121 or the lower bracket 122 to move vertically, so as to change the distance between the upper bracket 121 and the lower bracket 122, and realize the tension adjustment of the pole piece when passing through two adjacent work sections by adjusting the length of the pole piece between the upper bracket 121 and the lower bracket 122.

[0035] As a possible implementation, refer to Figure 2 As shown, the second motor 124 can adopt a push rod motor. Based on this, the second motor 124 can adopt one of the following two installation structures:

[0036] (A) Installed on the lower bracket 122 and the push rod of the second motor 124 is fixedly connected to the upper bracket 121. The push rod can be driven to extend and retract by the second motor 124 to control the vertical movement of the upper bracket 121, so as to change the distance between the upper bracket 121 and the lower bracket 122, thereby realizing the tension adjustment of the pole piece when passing through two adjacent work sections.

[0037] (B) The second motor 124 is installed on the upper bracket 121 and the push rod of the second motor 124 is fixedly connected to the lower bracket 122. The push rod can be driven to extend and retract by the second motor 124 to control the vertical movement of the lower bracket 122, so as to change the distance between the upper bracket 121 and the lower bracket 122, thereby realizing the tension adjustment of the pole piece when passing through two adjacent work sections.

[0038] As a possible implementation, refer to Figure 3 and Figure 4 As shown, the traction mechanism may further include a third motor 35. The output shaft of the third motor 35 is fixedly connected to the rotating shaft of the driving roller 33. The driving roller 33 can be driven to rotate by the third motor, so as to stably transport the pole piece forward between the driving roller 33 and the driven roller 34.

[0039] As a possible implementation, refer to Figure 3 As shown, the swing roller assembly 110 may further include two limit blocks 36, and the two limit blocks 36 are fixedly arranged along the swinging direction of the swing arm 111. When the swing arm 111 swings, the swinging of the swing arm 111 in its swinging direction can be limited by the two limit blocks 36, so as to limit the swinging angle of the swing arm 111 within a certain range, thereby preventing the excessive swinging angle of the swing arm 111 from affecting the normal production of the electrode sheet.

[0040] For the sake of easy understanding, the working principle of the above-mentioned tape storage mechanism will be described exemplarily below by taking a specific application as an example.

[0041] As an example, refer to Figure 3 As shown, the tape storage mechanism includes a swing roller assembly 110. The swing roller assembly 110 includes a swing arm 111, a swing roller 112, and a first motor ( Figure 3 not shown in the figure) and two limit blocks 36 fixedly arranged along the swinging direction of the swing arm 111. The output shaft of the first motor is fixedly connected to one end of the swing arm 111, and the other end of the swing arm 111 is fixedly connected to the rotating shaft of the swing roller 112; the tape storage mechanism further includes a first intermediate roller 31 and a second intermediate roller 32. In the electrode sheet transportation direction, the first intermediate roller 31, the swing roller 112, the second intermediate roller 32, and the traction mechanism are arranged in sequence; the traction mechanism includes a driving roller 33, a driven roller 34, and a third motor 35. The output shaft of the third motor 35 is fixedly connected to the rotating shaft of the driving roller 33. The driving roller 33 can be driven by the third motor to rotate, so as to traction the electrode sheet to be transported forward between the driving roller 33 and the driven roller 34; the swing arm 111 can be driven by the first motor to swing within the swinging angle range limited by the two limit blocks 36, so as to realize the tension adjustment of the electrode sheet when proceeding to adjacent two work sections; the first intermediate roller 31 and the second intermediate roller 32 play a further guiding role in the transportation of the electrode sheet, further improving the stability of the electrode sheet transportation direction.

[0042] As another example, refer to Figure 4As shown, the tape storage mechanism includes a swing roller assembly 110 and a translation roller assembly 120. The translation roller assembly 120 includes a second motor 124, and an upper support bracket 121 and a lower support bracket 122 which are arranged opposite to each other up and down. A plurality of translation rollers 123 are arranged in parallel on both the upper support bracket 121 and the lower support bracket 122, and the translation rollers 123 are arranged at staggered intervals up and down; the second motor 124 is a push rod motor, the second motor 124 is installed on the lower support bracket 122, and the push rod of the second motor 124 is fixedly connected to the upper support bracket 121; the tape storage mechanism further includes a third intermediate roller 41, a fourth intermediate roller 42, a fifth intermediate roller 43, a sixth intermediate roller 44 and a seventh intermediate roller 45. In the polar plate transportation direction, the third intermediate roller 41, the translation roller 123, the fourth intermediate roller 42, the fifth intermediate roller 43, the swing roller 112, the sixth intermediate roller 44, the seventh intermediate roller 45 and the traction mechanism are arranged in sequence; the traction mechanism includes a driving roller 33, a driven roller 34 and a third motor ( Figure 4 not shown in the figure), and the output shaft of the third motor is fixedly connected to the rotating shaft of the driving roller 33. The driving roller 33 can be driven by the third motor to rotate, so as to traction the polar plate to be transported forward between the driving roller 33 and the driven roller 34; the upper support bracket 121 can be driven by the second motor 124 to move vertically to adjust the distance between the upper support bracket 121 and the lower support bracket 122, and the swing arm of the swing roller assembly 110 is driven ( Figure 4 not shown in the figure), so as to realize the tension adjustment of the polar plate when performing adjacent two working sections; the third intermediate roller 41, the fourth intermediate roller 42, the fifth intermediate roller 43, the sixth intermediate roller 44 and the seventh intermediate roller 45 play a further guiding role in the transportation of the polar plate, and further improve the stability of the polar plate transportation direction.

[0043] By adopting the above-mentioned tape storage mechanism, the tension adjustment of the polar plate when performing adjacent two working sections can be realized, which is beneficial to improving the processing quality of the polar plate. It can also connect the adjacent two working sections together, making the layout of the polar plate production equipment more compact and occupying less space.

[0044] The embodiment of the present invention further provides a tension control system. The tension control system can be applied to the polar plate production equipment. Refer to Figure 5 as shown, the tension control system can include a detection device 200, a control device 300 and the above-mentioned tape storage mechanism 100. The detection device 200 is respectively connected to the tape storage mechanism 100 and the control device 300, and the control device 300 is connected to the tape storage mechanism 100.

[0045] The above detection device 200 may be composed of one or more sensors. For example, the detection device 200 may include a tension sensor, a linear sensor, etc. The tension sensor can be used to detect the tension of the pole piece when it reaches the working position corresponding to each traction mechanism (i.e., between the paired active roller 33 and driven roller 34), and the linear sensor can be used to detect the distance between the upper bracket 121 and the lower bracket 122 of the translation roller assembly 120.

[0046] The above control device 300 may be composed of one or more controllers. For example, the control device 300 may include a PLC controller. The PLC controller can be used to collect the detection data of the tension sensor and the linear sensor respectively, and the PLC controller can also control the motors or other electrical components included in the tape storage mechanism 100, so as to realize the automatic control of the pole piece tension.

[0047] Finally, it should be noted that: the above embodiments are only specific implementation manners of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A belt storage mechanism, characterized in that: The invention is applied to a pole piece production device, the pole piece production device comprising a front device (10) and a rear device (20), the front device (10) and the rear device (20) being connected via the belt storage mechanism (100); the front device (10) and the rear device (20) both comprising a traction mechanism; the reeling end of the belt storage mechanism (100) is connected to the traction mechanism of the front device (10), and the unreeling end of the belt storage mechanism (100) is connected to the traction mechanism of the rear device (20); the belt storage mechanism (100) comprises a swing roller assembly (110) and / or a translation roller assembly ( 120); the swing roller assembly (110) comprises a swing arm (111), one end of which is rotatably arranged, and the other end of which is provided with a swing roller (112); the translation roller assembly (120) comprises an upper support (121) and a lower support (122) which are arranged opposite to each other in upper and lower layers, and the upper support (121) and the lower support (122) are both provided with a plurality of translation rollers (123) in parallel, and the translation rollers (123) are arranged in an alternating manner in upper and lower layers; the traction mechanism comprises an active roller (33) and a driven roller (34) which are arranged in upper and lower layers.

2. The belt storage mechanism according to claim 1, characterized in that: The belt storage mechanism (100) comprises the translation roller assembly (120) and the swing roller assembly (110) which are connected in sequence.

3. The belt storage mechanism according to claim 2, characterized in that: The winding end of the translation roller assembly (120) is connected to the traction mechanism of the front device (10), the unwinding end of the translation roller assembly (120) is connected to the winding end of the swing roller assembly (110), and the unwinding end of the swing roller assembly (110) is connected to the traction mechanism of the rear device (20); or, the winding end of the swing roller assembly (110) is connected to the traction mechanism of the front device (10), the unwinding end of the swing roller assembly (110) is connected to the winding end of the translation roller assembly (120), and the unwinding end of the translation roller assembly (120) is connected to the traction mechanism of the rear device (20).

4. The belt storage mechanism according to claim 1, characterized in that: The swing roller assembly (110) further comprises a first motor (113), wherein an output shaft of the first motor (113) is fixedly connected to one end of the swing arm (111), and the other end of the swing arm (111) is fixedly connected to a rotating shaft of the swing roller (112).

5. The belt storage mechanism according to claim 1, characterized in that: The translation roller assembly (120) further comprises a second motor (124), and the second motor (124) is used to drive the upper support (121) or the lower support (122) to move vertically.

6. The belt storage mechanism according to claim 5, characterized in that: The second motor (124) is a push rod motor; the second motor (124) is mounted on the lower bracket (122) and the push rod of the second motor (124) is fixedly connected to the upper bracket (121); or the second motor (124) is mounted on the upper bracket (121) and the push rod of the second motor (124) is fixedly connected to the lower bracket (122).

7. The belt storage mechanism according to claim 1, characterized in that: The traction mechanism further comprises a third motor (35), the output shaft of the third motor (35) being fixedly connected to the rotating shaft of the active roller (33).

8. The belt storage mechanism according to claim 1, characterized in that: The swing roller assembly (110) further comprises two limit blocks (36), and the two limit blocks (36) are fixedly arranged along the swing direction of the swing arm (111).

9. A tension control system, characterized in that: Applied to pole piece production equipment, the tension control system comprises a detection device (200) and a control device (300) and a belt storage mechanism (100) as described in any one of claims 1 to 8, the detection device (200) is connected to the belt storage mechanism (100) and the control device (300) respectively, and the control device (300) is connected to the belt storage mechanism (100).

10. A pole piece production device, characterized in that: The electrode production equipment comprises a front device (10) and a rear device (20), and the front device (10) and the rear device (20) are connected via a belt storage mechanism (100) according to any one of claims 1 to 9.

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