Battery cell hot-pressing device for lithium battery packaging production line

Abstract

The utility model relates to the technical field of lithium battery production, in particular to a lithium battery packaging production line battery cell hot pressing device which comprises a conveying belt, baffles are arranged on the two opposite sides of the conveying belt in the length direction of the conveying belt, and a plurality of alignment plates are arranged at the top of the conveying belt. A first position for abutting and aligning the battery cells is formed between the alignment plate and the baffle plate; the hot-pressing workbench is arranged on one side of the conveying belt, the hot-pressing workbench is used for placing a to-be-hot-pressed battery cell, a hot-pressing assembly is arranged over the hot-pressing workbench, and the hot-pressing assembly is used for performing hot-pressing shaping on the to-be-hot-pressed battery cell; and the taking and placing mechanism is arranged on one side of the conveying belt, and the taking and placing mechanism is used for conveying the battery cell located at the first position to the hot pressing workbench. The battery cell hot-pressing device has the effects that the operation procedure of manually placing the battery cell to the hot-pressing template can be omitted, the safety of the battery cell hot-pressing device is improved, and meanwhile, the accuracy of the battery cell placing position is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a cell hot pressing device for a lithium battery packaging production line. Background Art

[0002] In the production process of lithium-ion batteries, the positive and negative electrode sheets and the diaphragm are assembled and manufactured by winding or stacking the electrode sheets, and then the aluminum-plastic film is packaged to form a basic battery cell. At this time, the battery cell is fluffy and needs to be hot-pressed and shaped by the battery cell hot pressing device. The main purpose is to heat the binder on the diaphragm so that it can be bonded to the positive and negative electrode sheets under the combined action of temperature and pressure to improve the flatness of the lithium-ion battery, so that the battery cell thickness meets the requirements and has consistency, and the diaphragm wrinkles can be eliminated, the air inside the battery cell can be driven out, the diaphragm and the positive and negative electrode sheets can be closely attached together, the lithium ion diffusion distance can be shortened, and the internal resistance of the battery can be reduced;

[0003] In the prior art, a battery cell hot pressing device usually includes an upper and lower template, and the battery cell is clamped between the two templates. The upper and lower templates are then closed so that the battery cell is subjected to a certain pressure and temperature, thereby achieving the purpose of hot pressing and shaping the battery cell. However, during the operation of the existing battery cell hot pressing device, the battery cell needs to be manually placed between the two templates, which can easily cause burns to the operator. The operating safety of the device is insufficient and needs to be urgently resolved. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present application provides a battery cell hot pressing device for a lithium battery packaging production line, aiming to get rid of the operation process of manually placing the battery cell on the hot pressing template, improve the safety of the battery cell hot pressing device, and ensure the accuracy of the battery cell placement position.

[0005] The above invention objectives of the present application are achieved through the following technical solutions:

[0006] A conveyor belt, wherein baffles are arranged on opposite sides of the conveyor belt along its length direction, and a plurality of alignment plates are arranged on the top of the conveyor belt, and a first position where the power supply core is abutted and aligned is formed between the alignment plates and the baffles;

[0007] A hot pressing workbench, the hot pressing workbench is arranged on one side of the conveyor belt, the hot pressing workbench is used for placing the battery core to be hot pressed, a hot pressing assembly is arranged directly above the hot pressing workbench, and the hot pressing assembly is used for hot pressing and shaping the battery core to be hot pressed;

[0008] A pick-and-place mechanism is disposed on one side of the conveyor belt, and is used to convey the battery cell located at the first position to the hot pressing workbench.

[0009] By adopting the above technical scheme, each battery cell is placed in turn between the corresponding alignment plate and the baffle, and then the two sides of the battery cell are respectively abutted and aligned with the alignment plate and the baffle, that is, the battery cell is abutted to the first position, so that when the battery cell is transported to the pick-up and placement mechanism through the conveyor belt, the pick-up and placement mechanism can accurately take the battery cell at the first position, and then the battery cell is transported to the hot pressing workbench, and the hot pressing shaping of the battery cell is completed under the action of the hot pressing assembly. Compared with the traditional operation of manually placing the battery cell on the hot pressing workbench, there is no need for manual contact or proximity to the hot pressing workbench, which can improve the safety of battery cell production. Instead, the battery cell only needs to be placed on the conveyor belt and abutted to the first position. The operation is convenient and the accuracy of the battery cell pick-up and placement position can be ensured.

[0010] In a preferred example, the present application can be further configured as follows: the pick-and-place mechanism includes a bracket, a lifting seat and a mounting plate, the bracket is arranged on one side of the conveyor belt, the lifting seat is vertically slidably arranged on the bracket, the mounting plate is horizontally slidably arranged on the lifting seat and is located above the conveyor belt, an air nozzle is arranged and connected at the bottom of the mounting plate, the bracket is provided with an air pump, the air pump is connected to the air nozzle, the bracket is provided with a first driving member for driving the lifting seat to move vertically, and the lifting seat is provided with a second driving member for driving the mounting plate to move horizontally close to or away from the hot pressing workbench;

[0011] There is an intersection between the horizontal moving path of the mounting plate and the conveying path of the battery cell at the first position. When the mounting plate and the battery cell are at the intersection, the air nozzle is located directly above the battery cell.

[0012] By adopting the above technical solution, the mounting plate can be moved in the vertical and horizontal directions under the cooperation of the first driving member and the second driving member, and when the battery cell and the mounting plate are both located at the intersection position after being aligned in the first position, the air nozzle is placed in a negative pressure state by driving the air pump. At this time, the battery cell can be adsorbed to complete the picking up of the battery cell, and the posture of the battery cell after alignment can be maintained to ensure the consistency of the battery cell before hot pressing. After moving to the hot pressing workbench, the battery cell can be slowly placed on the hot pressing workbench through the cooperation of the air pump and the first driving member, thereby realizing the automatic pick-up and placement function of the battery cell.

[0013] In a preferred example, the present application can be further configured as follows: a support guide rod is slidably connected inside the lifting seat, and the support guide rod is fixedly connected to the top of the mounting plate.

[0014] By adopting the above technical solution and setting the support guide rod, the lifting seat can be assisted to provide sufficient support to the support guide rod, thereby improving the sliding stability of the mounting plate.

[0015] In a preferred example, the present application can be further configured as follows: a mounting frame is provided on one side of the conveyor belt, the hot pressing assembly is installed in the mounting frame, the hot pressing assembly includes a hot pressing plate, the hot pressing plate is slidably provided on the mounting frame along the vertical direction of the mounting frame and is located directly above the hot pressing workbench, a heating element for heating the hot pressing plate is provided inside the hot pressing plate, and the mounting frame is provided with a third driving member for driving the hot pressing plate to move vertically.

[0016] By adopting the above technical solution and setting a heating element, the hot pressing plate can be heated. When the battery cell is located on the hot pressing workbench, the hot pressing plate is driven to move vertically close to the hot pressing workbench until it abuts the battery cell, thereby completing the hot pressing shaping process.

[0017] In a preferred example, the present application may be further configured as follows: a probe is provided on one side of the hot pressing plate, and when the hot pressing plate abuts against the battery cell, the probe is used to abut against the pole ear of the battery cell.

[0018] By adopting the above technical solution and setting a probe, the hot pressing component can perform a short circuit test while hot pressing and shaping the battery cell, thereby improving the production efficiency of the battery cell.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. Compared with the traditional manual operation of placing battery cells on the hot pressing workbench, there is no need for manual contact or proximity to the hot pressing workbench, which can improve the safety of battery cell production. Instead, the battery cells only need to be placed on the conveyor belt and abutted to the first position. The operation is convenient and can ensure the accuracy of the battery cell placement position.

[0021] 2. The mounting plate can be moved in the vertical and horizontal directions with the cooperation of the first driving member and the second driving member, and when the battery cell and the mounting plate are both at the intersection position after being aligned in the first position, the air pump is driven to put the air nozzle in a negative pressure state. At this time, the battery cell can be adsorbed to complete the picking of the battery cell, and the posture of the battery cell after alignment can be maintained to ensure the consistency of the battery cell before hot pressing. After moving to the hot pressing workbench, the battery cell can be slowly placed on the hot pressing workbench through the cooperation of the air pump and the first driving member, realizing the automatic pick-up and place function of the battery cell.

[0022] 3. By setting up probes, the hot pressing assembly can perform short-circuit testing while hot pressing and shaping the battery cells, thereby improving the production efficiency of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a cell hot pressing device of a lithium battery packaging production line in one embodiment of the present application;

[0024] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle V part;

[0025] Figure 3 It is a structural schematic diagram of a pick-and-place mechanism in one embodiment of the present application;

[0026] Figure 4 yes Figure 1 A partial enlarged schematic diagram of the middle W part;

[0027] Figure 5 This is another structural schematic diagram of a cell hot pressing device of a lithium battery packaging production line in one embodiment of the present application;

[0028] Figure 6 yes Figure 5 A partial enlarged schematic diagram of the X portion in the middle.

[0029] Figure numerals: D1, conveyor belt; D2, hot pressing workbench; D3, baffle; D4, alignment plate; D5, battery cell; D6, hot pressing assembly; D61, mounting frame; D62, hot pressing plate; D63, heat insulation board; D64, third driving member; D65, probe; D7, pick-and-place mechanism; D71, bracket; D72, lifting seat; D73, mounting plate; D74, air nozzle; D75, first driving member; D76, second driving member; D77, supporting guide rod. DETAILED DESCRIPTION

[0030] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0031] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure.

[0032] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0033] A cell hot pressing device for a lithium battery packaging production line of the present application is described below with reference to the accompanying drawings.

[0034] like Figure 1 and Figure 2 As shown, the hot pressing device of the lithium battery packaging production line includes a conveyor belt D1 and a hot pressing workbench D2. Baffles D3 are arranged on opposite sides of the conveyor belt D1 along its own length direction. A plurality of alignment plates D4 are arranged on the top of the conveyor belt D1. The alignment plates D4 and the baffles D3 form a first position for the battery cell D5 to abut and align. The baffles D3 and the alignment plates D4 are both in the shape of a rectangular parallelepiped, so as to facilitate alignment and adapt to the shapes of most battery cells D5 on the market. The hot pressing workbench D2 is arranged on one side of the conveyor belt D1. The hot pressing workbench D2 is used for placing the battery cell D5 to be hot pressed. A hot pressing assembly D6 is arranged directly above the hot pressing workbench D2. The hot pressing assembly D6 is used to perform hot pressing and shaping on the battery cell D5 to be hot pressed. A pick-up and placement mechanism D7 is arranged above the conveyor belt D1. The pick-up and placement mechanism D7 is used to transport the battery cell D5 located at the first position to the hot pressing workbench D2 Before hot pressing, each battery cell D5 is placed between the corresponding alignment plate D4 and the baffle D3 in sequence, and then the two sides of the battery cell D5 are respectively abutted and aligned with the alignment plate D4 and the baffle D3, that is, the battery cell D5 is abutted to the first position, so that when the battery cell D5 is transported to the pick-up and placement mechanism D7 through the conveyor belt D1, the pick-up and placement mechanism D7 can accurately pick up the battery cell D5 at the first position, and then transport the battery cell D5 to the hot pressing workbench D2, and the hot pressing shaping of the battery cell D5 is completed under the action of the hot pressing component D6. Compared with the traditional operation of manually placing the battery cell D5 on the hot pressing workbench D2, there is no need for manual contact or proximity to the hot pressing workbench D2, which can improve the safety of the production of the battery cell D5. Instead, the battery cell D5 only needs to be placed on the conveyor belt D1 and abutted to the first position. The operation is convenient and the accuracy of the placement position of the battery cell D5 can be ensured.

[0035] Among them, Figure 1 and Figure 3As shown, the pick-and-place mechanism D7 includes a bracket D71, a lifting seat D72 and a mounting plate D73. The bracket D71 is arranged on one side of the conveyor belt D1. The lifting seat D72 is vertically slidably arranged on the bracket D71. The mounting plate D73 is horizontally slidably arranged on the lifting seat D72 and is located above the conveyor belt D1. An air nozzle D74 is arranged and connected at the bottom of the mounting plate D73. The bracket D71 is provided with an air pump (not shown in the figure). The air pump is connected to the air nozzle D74. The bracket D71 is provided with a first driving member D75 for driving the lifting seat D72 to move vertically. The lifting seat D72 is provided with a first driving member D75 for driving the mounting plate D73 to move against the conveyor belt D1. A second driving member D76 for horizontal movement close to or away from the hot pressing workbench D2, wherein the first driving member D75 is a first cylinder, the first cylinder is vertically fixedly installed on the bracket D71, the lifting seat D72 is fixedly connected to the piston rod of the first cylinder, and the lifting seat D72 can be driven to move vertically by driving the piston rod to extend and retract by the first cylinder, and the second driving member D76 is a second cylinder, the second cylinder is horizontally fixedly installed on the lifting seat D72, and the mounting plate D73 is fixedly connected to the piston rod of the second cylinder. Similarly, the mounting plate D73 can be driven to move horizontally by driving the piston rod to extend and retract by the second cylinder;

[0036] There is an intersection between the horizontal moving path of the mounting plate D73 and the conveying path of the battery cell D5 located at the first position. When the mounting plate D73 and the battery cell D5 are located at the intersection, the air nozzle D74 is located directly above the battery cell D5. During operation, the mounting plate D73 can be moved in the vertical and horizontal directions under the cooperation of the first driving member D75 and the second driving member D76, and when the battery cell D5 and the mounting plate D73 aligned at the first position are both located at the intersection, the air nozzle D74 is driven to be in a negative pressure state, and at this time the battery cell D5 can be adsorbed to complete the picking up of the battery cell D5, and the posture of the battery cell D5 after alignment can be maintained to ensure the consistency of the battery cell D5 before hot pressing. After moving to the hot pressing workbench D2, the battery cell D5 can be slowly placed on the hot pressing workbench D2 through the cooperation of the air pump and the first driving member D75, thereby realizing the automatic pick-up and place function of the battery cell D5.

[0037] It should be noted that, in this embodiment, multiple hot pressing workstations D2 can be provided, multiple hot pressing assemblies D6 can be provided corresponding to the number of hot pressing workstations D2, and multiple groups of air nozzles D74 can be provided corresponding to the number of hot pressing workstations D2, so as to facilitate the simultaneous placement and hot pressing of multiple battery cells D5.

[0038] Furthermore, the lifting seat D72 is internally slidably connected with a support guide rod D77, and the support guide rod D77 is fixedly connected to the top of the mounting plate D73. By setting the support guide rod D77, the lifting seat D72 can be assisted to provide sufficient support to the support guide rod D77, thereby improving the sliding stability of the mounting plate D73.

[0039] In addition, if Figure 4 and Figure 5 As shown, a mounting frame D61 is provided on one side of the conveyor belt D1, and the hot pressing assembly D6 is installed in the mounting frame D61. The hot pressing assembly D6 includes a hot pressing plate D62. The hot pressing plate D62 is slidably arranged on the mounting frame D61 along the vertical direction of the mounting frame D61 and is located directly above the hot pressing workbench D2. A heating element (not shown in the figure) for heating the hot pressing plate D62 is provided inside the hot pressing plate D62, wherein the heating element can be a common heating device such as an electric heating block or an electric heating wire. By providing the heating element, the hot pressing plate D62 can be heated. A heat insulation plate D63 is connected above the hot pressing plate D62 to play a role of heat insulation protection. The mounting frame D61 is provided with a third driving member D64 for driving the hot pressing plate D62 to move vertically. When the battery cell D5 is located on the hot pressing workbench D2, the third driving member D64 is started to drive the hot pressing plate D62 to move vertically close to the hot pressing workbench D2 until it abuts against the battery cell D5, thereby completing the hot pressing shaping process.

[0040] Furthermore, if Figure 6 As shown, a probe D65 is provided on one side of the hot pressing plate D62. When the hot pressing plate D62 abuts against the battery cell D5, the probe D65 is used to abut against the pole ear of the battery cell D5. By providing the probe D65, the hot pressing assembly D6 can perform a short circuit test while hot pressing and shaping the battery cell D5, thereby improving the production efficiency of the battery cell D5.

[0041] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A cell hot pressing device for a lithium battery packaging production line, It is characterized in that include: A conveyor belt (D1), wherein baffles (D3) are arranged on opposite sides of the conveyor belt (D1) along its length direction, and a plurality of alignment plates (D4) are arranged on the top of the conveyor belt (D1), and a first position for a power supply core (D5) to abut and align is formed between the alignment plates (D4) and the baffles (D3); A hot pressing workbench (D2), the hot pressing workbench (D2) being arranged on one side of the conveyor belt (D1), the hot pressing workbench (D2) being used for placing the battery core (D5) to be hot pressed, a hot pressing assembly (D6) being arranged directly above the hot pressing workbench (D2), the hot pressing assembly (D6) being used for hot pressing and shaping the battery core (D5) to be hot pressed; A pick-and-place mechanism (D7), the pick-and-place mechanism (D7) being arranged on one side of the conveyor belt (D1), the pick-and-place mechanism (D7) being used to convey the battery cell (D5) located at the first position to the hot pressing workbench (D2).

2. A cell hot pressing device for a lithium battery packaging production line as claimed in claim 1, It is characterized in that The pick-and-place mechanism (D7) comprises a bracket (D71), a lifting seat (D72) and a mounting plate (D73); the bracket (D71) is arranged on one side of the conveyor belt (D1); the lifting seat (D72) is vertically slidably arranged on the bracket (D71); the mounting plate (D73) is horizontally slidably arranged on the lifting seat (D72) and is located above the conveyor belt (D1); an air nozzle (D74) is arranged and connected at the bottom of the mounting plate (D73); the bracket (D71) is provided with an air pump, and the air pump is connected to the air nozzle (D74); the bracket (D71) is provided with a first driving member (D75) for driving the lifting seat (D72) to move vertically; the lifting seat (D72) is provided with a second driving member (D76) for driving the mounting plate (D73) to move horizontally close to or away from the hot pressing workbench (D2); There is an intersection between the horizontal moving path of the mounting plate (D73) and the conveying path of the battery cell (D5) located at the first position. When the mounting plate (D73) and the battery cell (D5) are located at the intersection, the air nozzle (D74) is located directly above the battery cell (D5).

3. A cell hot pressing device for a lithium battery packaging production line as claimed in claim 2, It is characterized in that The lifting seat (D72) is slidably connected to a support guide rod (D77) inside, and the support guide rod (D77) is fixedly connected to the top of the mounting plate (D73).

4. A cell hot pressing device for a lithium battery packaging production line as claimed in claim 1, It is characterized in that A mounting frame (D61) is provided on one side of the conveyor belt (D1), and the hot pressing assembly (D6) is installed in the mounting frame (D61). The hot pressing assembly (D6) includes a hot pressing plate (D62), and the hot pressing plate (D62) is slidably arranged on the mounting frame (D61) in the vertical direction of the mounting frame (D61) and is located directly above the hot pressing workbench (D2). A heating element for heating the hot pressing plate (D62) is arranged inside the hot pressing plate (D62), and the mounting frame (D61) is provided with a third driving member (D64) for driving the hot pressing plate (D62) to move vertically.

5. A cell hot pressing device for a lithium battery packaging production line as claimed in claim 4, It is characterized in that A probe (D65) is provided on one side of the hot pressing plate (D62). When the hot pressing plate (D62) abuts against the battery cell (D5), the probe (D65) is used to abut against the pole ear of the battery cell (D5).

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