Battery welding conveying device, conveying method and battery welding equipment

Abstract

The present invention provides a battery welding conveying device, a welding conveying method and a battery welding device, wherein the welding conveying device includes a base, a stepping platform, a fixed platform and a conveyor belt, wherein: the stepping platform is movably connected to the base, the fixed platform is fixedly connected to the base, and a welding station is formed on the fixed platform; the conveyor belt is arranged on the fixed platform and the stepping platform, the battery cells are sequentially loaded onto the conveyor belt located on the stepping platform, and the conveyor belt conveys the battery cells to the welding station in steps; the stepping platform is configured to be able to step close to or away from the fixed platform, and each time i battery cells are loaded onto the conveyor belt, the stepping platform steps a predetermined distance away from the fixed platform. In the battery welding conveying device of the present invention, during the loading process, the conveyor belt does not need to step toward the welding station, and the battery cells can be continuously and sequentially loaded onto the conveyor belt, so that a predetermined number of battery cells are synchronously stepped to the welding station by the conveyor belt.

Description

Technical Field

[0001] The invention relates to the field of solar cell panel manufacturing, and in particular to a battery welding conveying device, a welding conveying method and a battery welding equipment. Background Art

[0002] The cell welding process is an important process in the production of solar panels. During the welding process, the cell loading device places a predetermined number of cells on the welding conveyor device in sequence, and the welding conveyor device transports the cells to the welding station, and finally the welding device welds the predetermined number of cells into a cell string.

[0003] The traditional welding conveyor device only includes a welding platform with a conveyor belt mounted on it. The conveyor belt is driven by a stepper motor. In order to ensure that the loading position on the conveyor belt near the loading device remains vacant to place the next battery cell, the stepper motor must drive the conveyor belt to step once toward the welding station after the loading device places the current battery cell at the loading position. The distance of each step is roughly the width of a battery cell. The welding device waits until the predetermined number of battery cells have all arrived at the welding station before performing the welding action, thereby welding the predetermined number of battery cells into a battery string.

[0004] The traditional welding conveying device has the following technical problems: the battery cells that arrive at the welding station first need to wait for the battery cells that arrive later. The heating time of the battery cells that arrive first is significantly longer than that of the battery cells that arrive later. The heating difference between the battery cells leads to poor welding effect. Summary of the invention

[0005] In view of the above technical problems existing in the prior art, the first aspect of the present invention provides a battery welding conveying device, and its technical solution is as follows:

[0006] A battery welding conveying device comprises a base, a stepping platform, a fixed platform and a conveyor belt, wherein:

[0007] The stepping platform is movably connected to the base;

[0008] The fixed platform is fixedly connected to the base, a welding station is formed on the fixed platform, and the upper surface of the fixed platform and the upper surface of the stepping platform are in the same plane;

[0009] The conveyor belt is arranged on the fixed platform and the stepping platform, and a predetermined number of battery cells are sequentially loaded onto the conveyor belt located on the stepping platform, and the conveyor belt is configured to convey the predetermined number of battery cells to the welding station in a stepping manner;

[0010] The stepping platform is configured to be able to move in steps toward or away from the fixed platform. Whenever i battery cells are loaded onto the conveyor belt, the stepping platform steps a predetermined distance away from the fixed platform until a predetermined number of battery cells are all loaded onto the conveyor belt, where i is a natural number greater than zero.

[0011] By setting up a stepping platform, during the loading process, the conveyor belt does not need to step towards the welding station, and a predetermined number of battery cells can be continuously and sequentially loaded to the loading position on the conveyor belt, so that the conveyor belt can synchronously step the predetermined number of battery cells loaded thereon to the welding station, ultimately ensuring the heating consistency of each battery cell and improving the welding effect.

[0012] In some embodiments, the battery welding conveying device further includes a stepping platform driving mechanism for driving the stepping platform to step, and a driving end of the stepping platform driving mechanism is connected to the stepping platform.

[0013] By setting up a stepping platform driving mechanism, stepping driving of the stepping platform is realized.

[0014] In some embodiments, the stepper platform driving mechanism includes a stepper platform driving motor and a first slide rail connected to the base, and the first slide rail extends along the conveying direction of the conveyor belt; the stepper platform includes a sliding bracket and a carrying plate, the sliding bracket is slidably assembled on the first slide rail and connected to the driving end of the stepper platform driving motor, the carrying plate is connected to the sliding bracket, and the conveyor belt is carried on the carrying plate.

[0015] A stepping platform with a simple structure and a stepping platform driving mechanism matched with the stepping platform are provided, so as to realize the stepping of the stepping platform.

[0016] In some embodiments, the battery welding conveyor device further includes a conveyor belt driving mechanism for driving the conveyor belt to step and convey.

[0017] By setting up a conveyor belt driving mechanism, step-by-step driving of the conveyor belt is achieved.

[0018] In some embodiments, the conveyor belt drive mechanism includes a main drive roller, a tensioning roller, a first guide roller and a second guide roller, wherein: the main drive roller is arranged at the end of the fixed platform away from the stepping platform, the tensioning roller is slidably connected to the bottom of the base and can step toward or away from the fixed platform in the conveying direction of the conveyor belt, the first guide roller is connected to the bottom of the stepping platform and is located above the tensioning roller, and the second guide roller is connected to the end of the stepping platform away from the fixed platform; the conveyor belt is installed on the main drive roller, the first guide roller and the second guide roller and is tensioned by the tensioning roller.

[0019] A transmission belt driving mechanism is provided, which realizes the installation and step-by-step driving of the transmission belt. In addition, by arranging a tensioning roller in the transmission belt driving mechanism, the transmission belt can be tensioned.

[0020] In some embodiments, the conveyor belt drive mechanism also includes a tensioning drive mechanism that drives the tensioning roller to step, and the tensioning drive mechanism includes a tensioning cylinder and a second slide rail connected to the bottom of the base; wherein: the second slide rail extends along the conveying direction of the conveyor belt, and the tensioning roller is slidably assembled on the second slide rail and connected to the driving end of the tensioning cylinder.

[0021] By setting up the tensioning drive mechanism, the driving of the tensioning roller is realized.

[0022] In some embodiments, it also includes a first guide roller mounting bracket, the first end of the first guide roller mounting bracket is connected to the bottom of the stepping platform, the second end of the first guide roller mounting bracket extends outward from the end of the stepping platform away from the fixed platform, and the first guide roller is mounted on the second end of the first guide roller mounting bracket.

[0023] By setting a first guide roller mounting bracket and indirectly connecting the first guide roller to the bottom of the stepping platform through the first guide roller mounting bracket, it can be ensured that the conveyor belt wound on the first guide roller is exposed to the outside of the stepping platform, thereby facilitating the installation and adjustment of the conveyor belt.

[0024] In some embodiments, the transmission belt driving mechanism includes a main driving roller, a guide roller, a rotating bracket and a tensioning roller, wherein: the main driving roller is arranged at the end of the fixed platform away from the stepping platform, the guide roller is connected to the bottom of the base, the first end of the rotating bracket is rotatably connected to the bottom of the base and can rotate around the base, the second end of the rotating bracket extends outward from the end of the stepping platform away from the fixed platform, and the tensioning roller is connected to the second end of the rotating bracket. The transmission belt is installed on the main driving roller and the guide roller and tensioned by the tensioning roller. When the stepping platform steps away from the fixed platform, the rotating bracket is configured to rotate toward the stepping platform; when the stepping platform steps toward the fixed platform, the rotating bracket is configured to rotate away from the stepping platform.

[0025] A transmission belt driving mechanism with a simpler structure is provided, which realizes the installation and step-by-step driving of the transmission belt. In addition, with the transmission belt driving mechanism of this structure, the transmission surface of the transmission belt will not contact the roller, thereby reducing the wear on the transmission surface of the transmission belt and extending the service life of the transmission belt.

[0026] A second aspect of the present invention provides a battery welding conveying method, comprising:

[0027] Load i cells onto the conveyor belt on the stepping platform, where i is a natural number greater than 0;

[0028] Controlling the stepping platform to step a predetermined distance in a direction away from the fixed platform;

[0029] When the number of battery cells on the conveyor belt on the stepping platform reaches a predetermined number, the stepping platform is controlled to step toward the fixed platform until it reaches a position close to the fixed platform;

[0030] The conveyor belt is controlled to transport a predetermined number of battery cells toward the welding station.

[0031] In the battery welding conveying method of the present invention, the conveyor belt does not need to step toward the welding station, and a predetermined number of battery cells can be continuously and sequentially loaded to the loading position on the conveyor belt, so that the conveyor belt can synchronously step the predetermined number of battery cells loaded thereon to the welding station, ultimately ensuring the heating consistency of each battery cell and improving the welding effect.

[0032] In some embodiments, loading i battery sheets onto a conveyor belt on a stepping platform includes:

[0033] When i is 1, i pieces of battery cells are placed on the conveyor belt on the stepping platform;

[0034] When i is greater than 1, i battery cells are simultaneously or sequentially loaded and laid on one laying line of the conveyor belt on the stepping platform, or i battery cells are simultaneously or sequentially laid on at least two laying lines of the conveyor belt on the stepping platform.

[0035] The battery welding conveying method of the present invention can step the stepping platform once after each battery cell is loaded; or can step the stepping platform once after each at least two battery cells are loaded, thereby meeting various application requirements in battery cell welding.

[0036] A third aspect of the present invention provides a battery welding device, which includes a welding conveying device, a battery cell feeding device, a welding strip feeding device and a welding device, wherein:

[0037] The cell feeding device feeds the cell to the welding conveyor device, and the solder strip feeding device feeds the solder strip to the welding conveyor device. The cell feeding device and the solder strip feeding device feed the soldering conveyor device in sequence, so that the cell and the solder strip on the welding conveyor device are stacked;

[0038] The welding conveyor device conveys the stacked battery cells and welding strips to the welding station, and the welding conveyor device adopts the battery welding conveyor device provided by the first aspect of the present invention;

[0039] The welding device welds the battery cells and welding ribbons at the welding station to form a battery string.

[0040] Through the cooperation of the welding conveying device, the battery cell feeding device, the soldering strip feeding device and the welding device, the battery welding equipment of the present invention can realize automatic feeding of battery cells and soldering strips and automatic welding of battery cells.

[0041] In addition, by optimizing the setting of the welding conveyor device, during the loading process, the conveyor belt does not need to step toward the welding station, and a predetermined number of battery cells can be continuously and sequentially loaded onto the conveyor belt, so that the welding conveyor device can synchronously step the battery cells loaded thereon to the welding station, ultimately ensuring the heating consistency of each battery cell and improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of the battery welding conveying device of the first embodiment of the present invention at a first viewing angle;

[0043] Figure 2 It is a structural schematic diagram of the battery welding conveying device of the first embodiment of the present invention at a second viewing angle;

[0044] Figure 3 It is a schematic diagram of the assembly of the conveyor belt and the conveyor belt driving mechanism in the first embodiment of the present invention;

[0045] Figure 4 It is a structural schematic diagram of a battery welding conveying device according to a second embodiment of the present invention at a first viewing angle;

[0046] Figure 5 It is a structural schematic diagram of a battery welding conveying device according to a second embodiment of the present invention at a second viewing angle;

[0047] Figure 6 It is a schematic diagram of the assembly of the conveyor belt and the conveyor belt driving mechanism in the second embodiment of the present invention;

[0048] Figure 7 It is a structural schematic diagram of a battery welding conveying device according to a third embodiment of the present invention at a first viewing angle;

[0049] Figure 8 It is a schematic structural diagram of a battery welding conveying device according to a third embodiment of the present invention at a second viewing angle;

[0050] Fig. 9 FIG. 1 is a schematic diagram of the assembly of a conveyor belt and a conveyor belt driving mechanism in the third embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] In order to solve the technical problem of poor welding effect caused by the heat difference between battery cells in the welding conveying device in the prior art, the present invention provides a battery welding conveying device. The structure and working process of the battery welding conveying device of the present invention are schematically described below through three embodiments.

[0053] First embodiment

[0054] like Figures 1 to 3 As shown, the battery welding conveying device provided in this embodiment at least includes a base 10, a stepping platform 20, a fixed platform 30 and a conveyor belt 60. Among them:

[0055] The stepping platform 20 is movably connected to the base 10 .

[0056] The fixed platform 30 is fixedly connected to the base 10, and a welding station is formed on the fixed platform 30. The upper surface of the fixed platform 30 and the upper surface of the stepping platform 20 are in the same plane.

[0057] The conveyor belt 60 is disposed on the fixed platform 30 and the stepping platform 20 , and a predetermined number of battery cells are sequentially loaded onto the conveyor belt 60 located on the stepping platform 20 . The conveyor belt 60 is configured to stepwise transport the predetermined number of battery cells to the welding station.

[0058] The predetermined number mentioned here can be the number of battery cells included in a battery string, or the number of battery cells included in multiple battery strings. For example, in some welding applications, the welding device only completes the welding of one battery string at a time, so in these application examples, the predetermined number mentioned refers to the number of battery cells required to form a battery string. In other welding applications, the welding device completes the welding of multiple battery strings in parallel each time, so in these application examples, the predetermined number mentioned refers to the number of battery cells required to form multiple battery strings.

[0059] When the predetermined number of battery cells are conveyed step by step to the welding station, the welding device at the welding station performs welding operations on the predetermined number of battery cells, thereby welding the predetermined number of battery cells into one or more battery strings.

[0060] The stepping platform 20 is configured to be able to move in steps toward or away from the fixed platform 30. During the battery cell loading process, each time i battery cells are loaded onto the conveyor belt 60, the stepping platform 20 steps a predetermined distance away from the fixed platform until a predetermined number of battery cells are all loaded onto the conveyor belt 60, where i is a natural number greater than zero. The predetermined distance of each step of the stepping platform 20 mentioned here matches the length of the i battery cells loaded onto the conveyor belt 60 in the conveying direction of the conveyor belt.

[0061] By providing a stepping platform 20 that can move stepwise toward or away from the fixed platform 30, during the battery cell loading process, each time the i battery cells of the current batch are loaded to the loading position on the conveyor belt 60, the stepping platform 20 steps away from the fixed platform by a predetermined distance, thereby driving the conveyor belt 60 and the i battery cells of the current batch loaded thereon to synchronously step away from the fixed platform by a predetermined distance. In this way, it can be ensured that the loading position on the conveyor belt 60 close to the loading station is always kept vacant, so that the i battery cells of the next batch can be smoothly loaded to the loading position.

[0062] Therefore, in the battery welding conveying device in this embodiment, during the loading process, the conveyor belt 60 does not need to step toward the welding station, and a predetermined number of battery cells can be continuously and sequentially loaded to the loading position on the conveyor belt 60, so that the conveyor belt 60 can synchronously step the predetermined number of battery cells loaded thereon to the welding station, ultimately ensuring the heating consistency of each battery cell and improving the welding effect.

[0063] Optionally, the welding conveying device in this embodiment also includes a stepping platform driving mechanism 40 and a conveyor belt driving mechanism 50, wherein: the stepping platform driving mechanism 40 is used to drive the stepping platform 20 to step toward or away from the fixed platform 30, and the conveyor belt driving mechanism 50 is used to drive the conveyor belt 60 to step and convey.

[0064] In this embodiment, Figures 1 to 2 As shown, the stepping platform driving mechanism 40 includes a stepping platform driving motor 41 connected to the base 10 and a first slide rail 42, and the first slide rail 42 extends along the conveying direction of the conveyor belt 60. Optionally, the stepping platform driving motor 41 is a stepping motor.

[0065] The stepping platform 20 includes a sliding bracket 21 and a carrying plate 22 . The sliding bracket 21 is slidably assembled on the first slide rail 42 and connected to the driving end of the stepping platform driving motor 41 . The carrying plate 22 is connected to the sliding bracket 21 , and the conveyor belt 60 is carried on the carrying plate 22 .

[0066] The stepping platform driving motor 41 drives the sliding bracket 21 to step along the first slide rail 42 , thereby driving the carrying plate 22 and the conveyor belt 60 carried thereon to move synchronously.

[0067] In this embodiment, Figures 1 to 3As shown, the conveyor belt driving mechanism 50 includes a main driving roller 51, a tensioning roller 52, a first guide roller 53 and a second guide roller 54. The main driving roller 51 is arranged on the end of the fixed platform 30 away from the stepping platform 20, the tensioning roller 52 is slidably connected to the bottom of the base 10 and can step toward or away from the fixed platform 30 in the conveying direction of the conveyor belt 60, the first guide roller 53 is installed at the bottom of the stepping platform 20 and is located above the tensioning roller 52, and the second guide roller 54 is connected to the end of the stepping platform 20. The conveyor belt 60 is installed on the main driving roller 51, the first guide roller 53 and the second guide roller 54 and is tensioned by the tensioning roller 52.

[0068] Before the battery cells are loaded, the conveyor belt 60 can be tensioned by adjusting the position of the tensioning roller 52 to ensure that the conveyor belt 60 is wound around the conveyor belt driving mechanism 50 in a tensioned state.

[0069] Optional, such as Figure 2 As shown, the conveyor belt driving mechanism 50 also includes a tensioning driving mechanism 55 for driving the tensioning roller 52 to move, and the tensioning driving mechanism 55 includes a tensioning cylinder 551 and a second slide rail 552 connected to the bottom of the base 10. The second slide rail 552 extends along the conveying direction of the conveyor belt 60, and the tensioning roller 52 is slidably assembled on the second slide rail 552 and connected to the driving end of the tensioning cylinder 551. The tensioning cylinder 551 drives the tensioning roller 52 to move along the second slide rail 552 toward or away from the fixed platform 30, thereby achieving tensioning of the conveyor belt 60.

[0070] Optionally, the conveyor belt driving mechanism 50 further comprises a roller driving motor 56 for driving the main driving roller to rotate. Optionally, the roller driving motor 56 is a stepping motor.

[0071] Second embodiment

[0072] like Figure 3 As shown, in the conveyor belt driving mechanism 50 of the first embodiment, the first guide roller 53 is directly installed at the bottom of the stepping platform 20, that is, the first guide roller 53 is hidden under the stepping platform 20. In this way, the portion of the conveyor belt 60 wound around the first guide roller 53 is also hidden under the stepping platform 20, which ultimately causes inconvenience in the installation and adjustment process of the conveyor belt 60.

[0073] Therefore, it is necessary to further optimize the conveyor belt driving mechanism 50 in the first embodiment. This embodiment is proposed based on this consideration.

[0074] like Figures 4 to 5As shown, the structure and working principle of the battery welding conveying device provided in this embodiment are basically the same as those in the first embodiment, and the only difference is that in this embodiment, the installation method of the first guide roller 53 of the conveyor belt driving mechanism 50 is different from that in the first embodiment.

[0075] For the sake of brevity, in this embodiment, we only provide a targeted description of the difference. For the rest, please directly refer to the relevant content in the first embodiment above.

[0076] like Figures 4 to 5 As shown, the battery welding conveying device in this embodiment also includes a first guide roller mounting bracket 23, the first end of the first guide roller mounting bracket 23 is connected to the bottom of the stepping platform 20, the second end of the first guide roller mounting bracket 23 extends outward from the end of the stepping platform 20 away from the fixed platform 30, and the first guide roller 53 is installed at the second end of the first guide roller mounting bracket 23, so that the first guide roller 53 can be ensured to be located on the outside of the stepping platform 20.

[0077] As a preferred embodiment, Figures 4 to 5 The first guide roller mounting bracket 23 in the embodiment is configured as an L-shaped mounting bracket consisting of a vertical portion and a horizontal portion, wherein the vertical portion is connected to the bottom of the stepping platform 20 and the horizontal portion extends outward from the end of the stepping platform 20 .

[0078] like Figure 6 As shown, by providing a first guide roller mounting bracket 23 and indirectly mounting the first guide roller 53 on the bottom of the stepping platform 20 through the first guide roller mounting bracket 23, it can be ensured that the first guide roller 53 can extend outward to the outside of the stepping platform 20. In this way, the conveyor belt wound around the first guide roller 53 can also be exposed to the outside of the stepping platform 20, thereby facilitating the installation and adjustment of the conveyor belt.

[0079] Third embodiment

[0080] The transmission belt driving mechanism 50 in the first embodiment and the second embodiment includes four roller structures, namely, a main driving roller 51, a tensioning roller 52, a first guide roller 53, and a second guide roller 54, and its structure is relatively complicated. In addition, in the first embodiment and the second embodiment, when the transmission belt 60 passes around the first guide roller 53, the transmission surface (front surface) of the transmission belt 60 directly contacts the first guide roller 53, so the transmission surface of the transmission belt 60 is easily worn by the first guide roller 53.

[0081] Based on the above considerations, this embodiment proposes a transmission belt driving mechanism with a simpler structure. When using this transmission belt driving mechanism, the transmission surface of the transmission belt 60 will not contact the roller, thereby reducing the wear of the transmission surface of the transmission belt and extending the life of the transmission belt.

[0082] It should be noted that the structure and working principle of the battery welding conveying device provided in this embodiment are basically the same as those of the first embodiment, and the only difference is that the conveyor belt driving mechanism in this embodiment is structurally different from the conveyor belt driving mechanism in the first embodiment.

[0083] Similarly, for the sake of brevity, in this embodiment, we only provide a targeted description of the transmission belt driving mechanism. For the rest, please directly refer to the relevant content in the first embodiment above.

[0084] like Figures 6 to 8 As shown, the conveyor belt driving mechanism 50 of the battery welding conveyor device of this embodiment includes a main driving roller 51, a guide roller 57, a rotating bracket 58 and a tensioning roller 59, wherein: the main driving roller 51 is arranged at the end of the fixed platform 30, the guide roller 57 is connected to the bottom of the base 10, the first end of the rotating bracket 58 is rotatably connected to the bottom of the base 10 and can rotate around the base 10, and the second end of the rotating bracket 58 extends outward from the end of the stepping platform 20 away from the fixed platform. The tensioning roller 59 is connected to the second end of the rotating bracket 58.

[0085] like Fig. 9 As shown, the transmission belt 60 is installed on the main driving roller 51 and the guide roller 57 and is tensioned by the tensioning roller 59, and the transmission surface of the transmission belt 60 does not contact any roller, thereby reducing the wear of the transmission surface.

[0086] The rotating bracket 58 drives the tensioning roller 59 to realize the tensioning of the conveyor belt 60. The specific process is as follows: when the stepping platform 20 steps away from the fixed platform 30, the rotating bracket 58 is configured to rotate toward the stepping platform 20, and when the stepping platform 20 steps toward the fixed platform 30, the rotating bracket rotates away from the stepping platform 20. In this way, it can be ensured that the conveyor belt 60 is always wound around the conveyor belt driving mechanism 50 in a tensioned state.

[0087] In order to drive the rotating bracket 58 to rotate, a rotating bracket driving mechanism may be provided in this embodiment. The rotating bracket driving mechanism may adopt various known driving mechanisms, such as a driving cylinder, etc. This embodiment does not impose any particular limitation on this.

[0088] It can be seen that in this embodiment, only three roller structures, namely the main driving roller 51, the guide roller 57 and the tensioning roller 59, are provided to realize the driving of the conveyor belt, which makes the structure of the conveyor belt driving mechanism 50 more concise.

[0089] The present invention further provides a battery welding conveying method, which can be implemented by any battery welding conveying device in the above embodiments of the present invention, and comprises the following steps:

[0090] Loading i battery cells onto the conveyor belt 60 on the stepping platform 20, where i is a natural number greater than 0;

[0091] Controlling the stepping platform 20 to step a predetermined distance in a direction away from the fixed platform;

[0092] When the number of cells on the conveyor belt on the stepping platform 20 reaches a predetermined number, the stepping platform 20 is controlled to step toward the fixed platform 30 until it reaches a position close to the fixed platform;

[0093] The conveyor belt 60 is controlled to transport a predetermined number of battery cells toward the welding station to perform subsequent welding operations.

[0094] The position close to the fixed platform mentioned here is a predetermined position close to the fixed platform 30, which can also be understood as the initial position or reset position of the stepping platform 20. The stepping platform 20 is in this position before the battery cells are loaded and when the conveyor belt 60 is stepping and conveying the loaded battery cells to the welding station.

[0095] It can be seen that the present invention also provides a battery welding conveying method. During the loading process, the conveyor belt 60 does not need to step toward the welding station. A predetermined number of battery cells can be continuously and sequentially loaded to the loading position on the conveyor belt 60, so that the conveyor belt 60 can synchronously step the predetermined number of battery cells loaded thereon to the welding station, ultimately ensuring the heating consistency of each battery cell and improving the welding effect.

[0096] In some embodiments, the welding device only completes the welding of one battery string at a time. In this case, only one laying line is arranged on the conveyor belt on the stepping platform, and the battery cells are sequentially loaded and laid on a laying line on the conveyor belt on the stepping platform. In these embodiments, i can be set to 1, that is, each time a battery cell is loaded, the stepping platform 20 moves once accordingly. Of course, i can also be set to be greater than 1. When i battery cells are laid on the laying line on the conveyor belt simultaneously or sequentially, the stepping platform 20 steps once.

[0097] It should be noted that in these embodiments, the battery cells can be placed at intervals or the front and rear edges of the battery cells can be overlapped.

[0098] In some other embodiments, the welding device can complete the welding of at least two battery strings in parallel each time. Correspondingly, at least two laying lines are arranged on the conveyor belt, and the value of i is set to be equal to the number of laying lines or to be an integer multiple of the number of laying lines. In these embodiments, when i battery cells are laid simultaneously or sequentially on at least two laying lines on the conveyor belt 60, the stepping platform 20 steps once.

[0099] It should be noted that in these embodiments, during the process of loading i battery cells, the battery cells can be placed side by side at the same time or side by side in sequence, and within each laying line, the battery cells can be placed at intervals or overlapped front to back.

[0100] The present invention also provides a battery welding device, which includes a welding conveyor, a battery cell feeding device, a solder strip feeding device and a welding device, wherein: the battery cell feeding device feeds the battery cell to the welding conveyor, the solder strip feeding device feeds the solder strip to the welding conveyor, and the battery cell feeding device and the solder strip feeding device sequentially feed the soldering conveyor so that the battery cells and solder strips on the soldering conveyor are stacked. The soldering conveyor adopts the battery soldering conveyor as described in any of the above embodiments, and the battery soldering conveyor conveys the stacked battery cells and solder strips to the soldering station. The soldering device solders the battery cells and solder strips at the soldering station to form a battery string.

[0101] The present invention has been described in sufficient detail with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present invention should fall within the scope of protection of the present invention. The scope of protection claimed by the present invention is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A battery welding conveying device, characterized in that: The battery welding conveying device comprises a base, a stepping platform, a fixed platform and a conveyor belt, wherein: The stepping platform is movably connected to the base; The fixed platform is fixedly connected to the base, a welding station is formed on the fixed platform, and the upper surface of the fixed platform and the upper surface of the stepping platform are in the same plane; The conveyor belt is arranged on the fixed platform and the stepping platform, a predetermined number of battery cells are sequentially loaded onto the conveyor belt located on the stepping platform, and the conveyor belt is configured to stepwise transport the predetermined number of battery cells to the welding station; The stepping platform is configured to be able to move stepwise toward or away from the fixed platform, the battery welding conveying device further includes a stepping platform driving mechanism for driving the stepping platform to step, the driving end of the stepping platform driving mechanism is connected to the stepping platform, and the battery welding conveying device further includes a conveyor belt driving mechanism for driving the conveyor belt to stepwise convey, which can ensure that the loading position on the conveyor belt close to the loading station remains vacant; Whenever i battery cells are loaded onto the conveyor belt, the stepping platform steps away from the fixed platform by a predetermined distance until all of the predetermined number of battery cells are loaded onto the conveyor belt, wherein i is a natural number greater than 0.

2. The battery welding conveying device according to claim 1, characterized in that: The stepping platform driving mechanism comprises a stepping platform driving motor and a first slide rail connected to the base, wherein the first slide rail extends along the conveying direction of the conveyor belt; The stepping platform includes a sliding bracket and a bearing plate. The sliding bracket is slidably assembled on the first slide rail and connected to the driving end of the stepping platform driving motor. The bearing plate is connected to the sliding bracket, and the conveyor belt is carried on the bearing plate.

3. The battery welding conveying device according to claim 1, characterized in that: The transmission belt driving mechanism comprises a main driving roller, a tensioning roller, a first guide roller and a second guide roller, wherein: The main driving roller is arranged at the end of the fixed platform away from the stepping platform, the tensioning roller is slidably connected to the bottom of the base and can move toward or away from the fixed platform in the conveying direction of the conveyor belt, the first guide roller is connected to the bottom of the stepping platform and is located above the tensioning roller, and the second guide roller is connected to the end of the stepping platform away from the fixed platform; The transmission belt is installed on the main driving roller, the first guide roller and the second guide roller and is tensioned by the tensioning roller.

4. The battery welding conveying device according to claim 3, characterized in that: The transmission belt driving mechanism also includes a tensioning driving mechanism for driving the tensioning roller to move, and the tensioning driving mechanism includes a tensioning cylinder and a second slide rail connected to the bottom of the base; wherein: The second slide rail extends along the conveying direction of the conveyor belt, and the tensioning roller is slidably assembled on the second slide rail and connected to the driving end of the tensioning cylinder.

5. The battery welding conveying device according to claim 3, characterized in that: The battery welding conveying device also includes a first guide roller mounting bracket, a first end of the first guide roller mounting bracket is connected to the bottom of the stepping platform, a second end of the first guide roller mounting bracket extends outward from the end of the stepping platform away from the fixed platform, and the first guide roller is mounted on the second end of the first guide roller mounting bracket.

6. The battery welding conveying device according to claim 1, characterized in that: The transmission belt driving mechanism includes a main driving roller, a guide roller, a rotating bracket and a tensioning roller, wherein: The main driving roller is arranged at the end of the fixed platform away from the stepping platform, the guide roller is connected to the bottom of the base, the first end of the rotating bracket is rotatably connected to the bottom of the base and can rotate around the base, the second end of the rotating bracket extends outwardly from the end of the stepping platform away from the fixed platform, and the tensioning roller is connected to the second end of the rotating bracket; The transmission belt is installed on the main driving roller and the guide roller and is tensioned by the tensioning roller; When the stepping platform steps away from the fixed platform, the rotating bracket is configured to rotate toward the stepping platform; when the stepping platform steps toward the fixed platform, the rotating bracket is configured to rotate away from the stepping platform.

7. A battery welding conveying method, characterized in that: The battery welding conveying method is implemented by the battery welding conveying device according to any one of claims 1 to 6, and the battery welding conveying method includes: Load i cells onto the conveyor belt on the stepping platform, where i is a natural number greater than 0; Controlling the stepping platform to step a predetermined distance in a direction away from the fixed platform; When the number of battery cells on the conveyor belt on the stepping platform reaches a predetermined number, controlling the stepping platform to step toward the fixed platform until it reaches a position close to the fixed platform; The conveyor belt is controlled to transport the predetermined number of battery cells toward the welding station.

8. The battery welding and conveying method according to claim 7, characterized in that: The step of loading i battery sheets onto a conveyor belt on a stepping platform comprises: When i is 1, i pieces of battery cells are placed on the conveyor belt on the stepping platform; When i is greater than 1, i battery cells are simultaneously or sequentially loaded and laid on one laying line of the conveyor belt on the stepping platform, or i battery cells are simultaneously or sequentially laid on at least two laying lines of the conveyor belt on the stepping platform.

9. A battery welding device, characterized in that: The battery welding equipment includes a welding conveying device, a battery cell feeding device, a welding strip feeding device and a welding device, wherein: The cell feeding device feeds the cell to the welding conveyor, and the solder strip feeding device feeds the solder strip to the welding conveyor. The cell feeding device and the solder strip feeding device feed the soldering conveyor in sequence, so that the cell and solder strip on the welding conveyor are stacked; The welding conveying device adopts the battery welding conveying device according to any one of claims 1 to 6, and the welding conveying device conveys the stacked battery cells and welding strips to the welding station; The welding device welds the battery cells and welding strips at the welding station to form a battery string.

Images