Stacking equipment and stacking method for multiple rows of battery modules

Abstract

The invention relates to stacking equipment and a stacking method for multiple rows of battery modules. The stacking equipment is characterized by comprising a rack, a calibration pressurizing mechanism and a working tray, wherein the calibration pressurizing mechanism and the working tray are arranged on the rack; the calibration and pressurization mechanism comprises an X-direction calibration and pressurization mechanism, an X-direction limiting and supporting mechanism and a Y-direction calibration and pressurization mechanism, the X-direction calibration and pressurization mechanism and the X-direction limiting and supporting mechanism are arranged at the two ends of the length direction of the rack correspondingly to achieve X-direction positioning of the pre-stacked battery module, and the Y-direction calibration and pressurization mechanism is arranged on one side of the width direction of the rack and used for achieving X-direction positioning of the pre-stacked battery module. Positioning the pre-stacked battery module in the Y direction; the working tray comprises a working table arranged on the rack, an X-direction clamping mechanism arranged at one end of the working table in the width direction and a Y-direction clamping mechanism arranged on one side of the working table in the length direction, and the working tray clamps the battery module in two directions. According to the multi-directional synchronous calibration structure, battery rebound and dislocation caused by non-synchronous calibration are prevented, multi-directional combined pressurization calibration is realized, and the positioning accuracy is better.

Description

Technical Field

[0001] The present invention specifically relates to a stacking device and a stacking method for multiple rows of battery modules, and belongs to the technical field of battery module stacking. Background Art

[0002] Battery modules are usually made up of multiple batteries connected in series and in parallel. In pursuit of larger capacity, multi-row battery modules have been more widely used. The accuracy of battery module stacking alignment and centering and reliable locking directly affect subsequent addressing, welding and other processes, and are key processes in battery module production. Considering the size deviations of batteries of different manufacturers and capacities, as well as the replacement of battery modules, the stacking equipment must have a certain degree of compatibility and flexibility.

[0003] To address the above issues, the current method in the industry is to configure an off-line pre-stacking mechanism, pre-group by column, and then transport to the stacking table for stacking and calibration. For example, for double-row battery modules, first pre-stack two batteries into groups, and then transfer the grouped batteries to the stacking table for stacking in a single row. Stacking equipment usually only has X-axis pressure calibration, and basically uses positioning blocks for limiting. There is a certain amount of active clearance between the modules on the pallet, and position offset may occur during the movement of the pallet.

[0004] The problems existing in the above-mentioned multi-row battery module stacking equipment and stacking method are:

[0005] 1. Under the existing technical solution, the alignment accuracy of the battery module is low, and calibration is only achieved in the X direction, which may cause abnormalities in subsequent welding.

[0006] 2. Under the existing technical solution, there is a gap in the limit of the battery module, which is a soft limit with low reliability and the risk of module displacement during the movement of the tray.

[0007] 3. Multiple rows of battery modules usually need to be pre-grouped by column and then transported to the stacking table for stacking and calibration; the stacking efficiency is low, the transportation labor intensity is high, and there is a risk of battery cells falling during transportation.

[0008] 4. At least 2 to 3 people are required to carry out the operation. At the same time, the transfer time, the risk of falling during transfer, the risk of module displacement, etc. are all high, and the efficiency is low. Summary of the invention

[0009] The purpose of the present invention is to provide a multi-directional synchronous calibration structure, which can synchronously press and calibrate multiple rows of battery packs in the Y direction under the X-direction pressurization state, thereby preventing battery rebound and dislocation caused by asynchronous calibration, and realizing multi-directional joint pressurization calibration and stacking equipment and stacking method of multiple rows of battery modules with better positioning accuracy.

[0010] In order to achieve the above-mentioned purpose, the first technical solution of the present invention is: a stacking device for multiple rows of battery modules, the innovation of which is that it includes a rack, a calibration pressurizing mechanism and a working tray; wherein:

[0011] The frame serves as a fixed support for the calibration pressurizing mechanism and the working tray;

[0012] The calibration pressurizing mechanism comprises an X-direction calibration pressurizing mechanism, an X-direction limit support mechanism and a Y-direction calibration pressurizing mechanism. The X-direction calibration pressurizing mechanism and the X-direction limit support mechanism are respectively arranged at both ends of the length direction of the rack, and are used for calibration pressurizing on one side of the X-direction and limit pressurizing on the other side of the battery module to realize positioning of the pre-stacked battery module in the X direction. The Y-direction calibration pressurizing mechanism is arranged on one side of the width direction of the rack, and cooperates with the X-direction calibration pressurizing mechanism to position the pre-stacked battery module in the Y direction.

[0013] The work tray includes a workbench, an X-direction clamping mechanism and a Y-direction clamping mechanism. The workbench is arranged on a frame, and the Y-direction calibration pressurizing mechanism is located on the outside of the workbench. An X-direction clamping mechanism is arranged at one end of the workbench along its width direction, which is manually locked or automatically locked after the battery module is depressurized to fix the battery module in the X direction. A Y-direction clamping mechanism is arranged at one side of the workbench along its length direction, which is automatically locked after the battery module is depressurized to fix the battery module in the Y direction.

[0014] In the above-mentioned first technical solution, the frame includes a frame base and an upper support; wherein,

[0015] The bottom of the frame base is provided with a pulley for easy movement, and the four corners of the frame base are also provided with positioning angle pieces for fixing the frame as a whole;

[0016] The upper supports are installed at both ends of the frame base in the length direction, and are used for installing and fixing the X-direction calibration pressurizing mechanism and the X-direction limit support mechanism.

[0017] In the first technical solution, the X-axis calibration pressurizing mechanism and the X-axis limit support mechanism have the same structure, both including an upper and lower driving unit and an X-axis calibration pressurizing unit; wherein,

[0018] The up-down driving unit is connected with the X-axis calibration pressurizing unit to drive the X-axis calibration pressurizing unit to move up and down, so as to facilitate the workbench for loading battery modules to enter and exit.

[0019] The up-down driving unit includes a Z-direction driving, a Z-direction transmission shaft, a slide and a guide rail. The Z-direction driving is fixed on the upper support of the frame. Both ends of the slide are slidably matched with the upper support through corresponding guide rails. The Z-direction driving drives the slide along the guide rail relative to the upper support through the Z-direction transmission shaft to synchronously drive the X-direction calibration pressurizing unit to move up and down.

[0020] The X-direction calibration pressurizing unit is used for calibration pressurizing of the battery module in the X-direction, and the X-direction calibration pressurizing unit includes an X-direction drive, an X-direction axis fixing plate, an X-direction transmission shaft, a shaft sleeve and a pressing plate, two groups of X-direction transmission shafts are separately arranged on the X-direction axis fixing plate, and are matched with the slide table in the form of shaft holes through corresponding shaft sleeves, the X-direction drive is installed on the slide table and is located between the two groups of X-direction transmission shafts, and the two groups of X-direction transmission shafts and the X-direction drive are fixedly connected to the pressing plate, driving the X-direction drive, together with the two groups of X-direction transmission shafts, drives the pressing plate to calibrate and pressurize the battery module in the X-direction,

[0021] The driving stroke of the X-direction drive in the X-direction calibration and pressurizing mechanism is adjustable, and the driving stroke of the X-direction drive in the X-direction limiting support mechanism is fixed.

[0022] In the above-mentioned first technical solution, the Y-axis calibration pressurizing mechanism includes a Y-axis drive and a mounting seat. A drive base is provided on the frame. The Y-axis drive is installed on the drive base through an L-shaped mounting seat to drive the Y-axis drive to pressurize and position the pre-stacked battery module in the Y direction.

[0023] In the above-mentioned first technical solution, the workbench includes a work table, a Y-direction auxiliary limiter, an X-direction auxiliary limiter, a tray bottom plate and a Y-direction push rod; wherein,

[0024] The tray bottom plate is arranged on the frame, and two working tables arranged side by side are arranged on the tray bottom plate, which are used as the working surface for battery stacking and have insulation and smooth properties. One working table plate is a reference table plate fixed on the tray bottom plate, and the other working table plate is a sliding table plate, and a linear slide rail is installed at the bottom of the sliding table plate, which slides with the Y-axis calibration pressurizing mechanism through the linear guide rail;

[0025] An X-direction auxiliary limiter is provided at one end of the tray bottom plate and along its width direction, and the X-direction auxiliary limiter is located on the outside of the work table, and a Y-direction auxiliary limiter is provided in the length direction of the two work tables, and the Y-direction auxiliary limiter and the X-direction auxiliary limiter are combined to serve as a rough positioning of a single row of battery stacking;

[0026] A Y-direction push rod is installed on the Y-direction auxiliary limit on the slidable table to drive the Y-direction calibration pressurization mechanism, which presses against the Y-direction push rod to move the working table toward the reference table to achieve Y-direction calibration pressurization of the battery module.

[0027] In the above-mentioned first technical solution, the Y-axis clamping mechanism includes a limit seat, a spring tongue and a hook; wherein,

[0028] The limit seat is installed on the tray bottom plate of the workbench and is used for limiting the position of the spring tongue. The spring tongue is connected to two fixed bases on the tray bottom plate through hinge pins on both sides to realize rotational movement. The back of the spring tongue has a limit step for cooperating with the hook for limiting position. The hook is connected to the fixed seats on both sides through cylindrical pins to realize rotational movement.

[0029] When the battery module is pressurized in the Y direction, the tail of the hook is pressed to make the hook at the head of the hook rise, driving the spring tongue to rise, and the hook hooks the limit column on the back of the spring tongue. At the same time, the tongue of the spring tongue and the limit seat are locked to realize the automatic clamping and limiting of the battery module in the Y direction;

[0030] When the battery module is moved out of the working tray, the spring tongue is pressed downward to drive the hook downward synchronously, and the limiting effect becomes invalid.

[0031] In the above-mentioned first technical solution, the X-direction clamping mechanism and the Y-direction clamping mechanism have the same structure, both of which are automatic clamping and locking mechanisms, or the X-direction clamping mechanism and the Y-direction clamping mechanism have different structures, the X-direction clamping mechanism is a manual locking mechanism, and the Y-direction clamping mechanism is an automatic locking mechanism.

[0032] In the above-mentioned first technical scheme, the X-axis clamping mechanism is an elbow locking structure, including an X-axis elbow clamp, an adapter plate, a transmission shaft and a limit plate. The X-axis elbow clamp is connected to the limit plate, and the adapter plate is connected through the transmission shaft and the limit plate to meet the three-point support to prevent the limit plate from deflecting during the extrusion process; when the X-axis elbow clamp is manually locked, the adapter plate is pushed to move, and the limit plate is driven to move according to the elbow clamp stroke to realize the X-axis clamping and locking of the battery module.

[0033] In the above-mentioned first technical solution, a handle is provided on the bottom plate of the pallet to facilitate the overall transportation of the working pallet.

[0034] In order to achieve the above object, the second technical solution of the present invention is: a method for stacking multiple rows of battery modules, the innovation of which is: using any of the multiple rows of battery module stacking devices described above to stack the multiple rows of battery modules, comprising the following specific steps:

[0035] S1. Preliminary operation is performed in a single-row battery stacking mode to complete stacking of multiple groups of single-row batteries;

[0036] S2. After stacking is completed, the multiple groups of single-row batteries are automatically calibrated and pressurized in the X direction. Specifically, the X-direction limit support mechanism is started to limit and pressurize one end of the stacked multiple-row batteries in the X direction, and then the X-direction calibration and pressurization mechanism is used to calibrate and pressurize the other end of the stacked multiple-row batteries in the X direction;

[0037] S3, when the multiple groups of single-row batteries are pressurized in the X direction, the multiple groups of single-row batteries are pressurized in the Y direction by the Y-direction calibration pressurization mechanism to achieve joint calibration, so that the multiple groups of single-row batteries are stacked to form a whole battery module;

[0038] S4, the Y-direction calibration pressurizing mechanism is released and released, and the Y-direction clamping mechanism is automatically locked to limit the battery module in the Y direction;

[0039] S5. The X-axis calibration pressurizing mechanism and the X-axis limit support mechanism are depressurized and loosened, and the X-axis clamping mechanism is used to limit and lock the battery module in the X direction to complete the stacking of multiple rows of battery modules.

[0040] The positive effect of the present invention is that after adopting the stacking device and stacking method of the multi-row battery module of the present invention, the stacking device includes a frame, a calibration pressurizing mechanism and a working tray; wherein,

[0041] The frame serves as a fixed support for the calibration pressurizing mechanism and the working tray;

[0042] The calibration pressurizing mechanism comprises an X-direction calibration pressurizing mechanism, an X-direction limit support mechanism and a Y-direction calibration pressurizing mechanism. The X-direction calibration pressurizing mechanism and the X-direction limit support mechanism are respectively arranged at both ends of the length direction of the rack, and are used for calibration pressurizing on one side of the X-direction and limit pressurizing on the other side of the battery module to realize positioning of the pre-stacked battery module in the X direction. The Y-direction calibration pressurizing mechanism is arranged on one side of the width direction of the rack, and cooperates with the X-direction calibration pressurizing mechanism to position the pre-stacked battery module in the Y direction.

[0043] The work tray includes a workbench, an X-direction clamping mechanism and a Y-direction clamping mechanism. The workbench is arranged on a frame, and the Y-direction calibration pressurizing mechanism is located on the outside of the workbench. An X-direction clamping mechanism is arranged at one end of the workbench and along its width direction, and is manually locked or automatically locked after the battery module is depressurized to fix the battery module in the X direction. A Y-direction clamping mechanism is arranged at one side of the workbench and along its length direction, and is automatically locked after the battery module is depressurized to fix the battery module in the Y direction.

[0044] The stacking method comprises pre-operating in a single-row battery stacking mode → calibration and pressurization in the X direction → calibration and pressurization in the Y direction, joint calibration → locking after depressurization in the X direction → locking after depressurization in the Y direction,

[0045] The present invention can use rubber pads to bond the batteries in the module and pressurize and center them along the X and Y directions. After calibration, steel belts are put on both sides of the module to tie up PET belts to achieve module molding.

[0046] Compared with the prior art, the present invention provides a multi-directional synchronous calibration mechanism. Under the X-direction pressurization state, multiple rows of battery packs are synchronously pressed and calibrated in the Y-direction, which prevents battery rebound and dislocation caused by asynchronous calibration, realizes multi-directional joint pressurization calibration, and makes positioning accuracy better; at the same time, the present invention provides a bidirectional clamping structure, the X-direction clamping mechanism can be automatically locked, or manually locked. If the manual locking method is adopted, the structure is more flexible and convenient for compatible module length differences. The automatic locking method of the Y-direction clamping mechanism realizes automatic locking; it can actually be selected according to the application scenario. Both clamping methods realize hard limiting, which effectively eliminates the risk of module movement in the tray; through the application of the automatically calibrated multi-row battery module stacking device, a stacking table can complete the single-row stacking of all batteries, with strong automatic calibration capability and good compatibility effect, which can effectively improve the stacking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of the battery module stacking of the present invention;

[0048] Figure 2 It is a structural schematic diagram of a specific implementation mode of the present invention;

[0049] Figure 3 It is a structural schematic diagram of the X-axis calibration pressurizing mechanism of the present invention;

[0050] Figure 4 It is a structural schematic diagram of the working tray of the present invention;

[0051] Figure 5 It is a structural schematic diagram of the Y-axis clamping mechanism of the present invention;

[0052] Figure 6 It is a structural schematic diagram of a specific implementation of the X-axis clamping mechanism of the present invention (manual locking);

[0053] Figure 7 It is a schematic diagram of the process of the stacking method of the present invention. DETAILED DESCRIPTION

[0054] The present invention is further described below with reference to the accompanying drawings and given embodiments, but is not limited thereto.

[0055] Example 1

[0056] like Figure 1 , 2 , 3, 4, 5, 6, a stacking device for multiple rows of battery modules, which includes a rack 100, a calibration pressurizing mechanism 200 and a working tray 300; wherein,

[0057] The frame 100 is used as a fixed support for the calibration press mechanism 200 and the work tray 300;

[0058] The calibration pressurizing mechanism 200 includes an X-direction calibration pressurizing mechanism 210, an X-direction position limiting support mechanism 220, and a Y-direction calibration pressurizing mechanism 230. The X-direction calibration pressurizing mechanism 210 and the X-direction position limiting support mechanism 220 are respectively arranged at both ends of the length direction of the rack 100, and are used for calibration pressurization on one side of the X-direction and position limiting pressurization on the other side of the battery module to achieve X-direction positioning of the pre-stacked battery module 400. The Y-direction calibration pressurizing mechanism 230 is arranged on one side of the width direction of the rack 100, and cooperates with the X-direction calibration pressurizing mechanism 210 to position the pre-stacked battery module 400 in the Y direction.

[0059] The work tray 300 includes a workbench 310, an X-axis clamping mechanism 320 and a Y-axis clamping mechanism 330. The workbench 310 is arranged on the frame 100, and the Y-axis calibration pressurizing mechanism 230 is located on the outside of the workbench 310. An X-axis clamping mechanism 320 is arranged at one end of the workbench 310 and along its width direction. After the battery module is depressurized, it is manually locked or automatically locked to fix the battery module in the X direction. A Y-axis clamping mechanism 330 is arranged at one side of the workbench 310 and along its length direction. After the battery module is depressurized, it is automatically locked to fix the battery module in the Y direction.

[0060] like Figure 1 , 2 As shown, in order to facilitate the fixing or transfer of the device as a whole, and to facilitate the installation and fixing of the calibration pressure mechanism and the limit support mechanism in the X direction, the frame 100 includes a frame base 110 and an upper support 120; wherein,

[0061] The bottom of the frame base 110 is provided with a pulley for easy movement, and the four corners of the frame base 110 are also provided with positioning angle pieces for fixing the frame as a whole;

[0062] The upper supports 120 are installed at both ends of the frame base 110 in the length direction, and are used for installing and fixing the X-direction calibration pressurizing mechanism 210 and the X-direction limiting support mechanism 22 .

[0063] like Figure 3 As shown, in order to achieve X-direction calibration and pressurization of the stacked battery modules, the X-direction calibration and pressurization mechanism 210 and the X-direction limit support mechanism 220 have the same structure, both including an upper and lower driving unit and an X-direction calibration and pressurization unit; wherein,

[0064] The up-down driving unit is connected with the X-direction calibration pressurizing unit to drive the X-direction calibration pressurizing unit to move up and down, so as to facilitate the workbench 310 for loading the battery module to enter and exit.

[0065] The up-down driving unit includes a Z-direction driving 211, a Z-direction transmission shaft 212, a slide 216 and a guide rail 217. The Z-direction driving 211 is fixed on the upper support 120 of the frame 100. Both ends of the slide 216 are slidably matched with the upper support 120 through corresponding guide rails 217. The Z-direction driving 211 drives the slide 216 along the guide rail 217 relative to the upper support 120 through the Z-direction transmission shaft 212 to synchronously drive the X-direction calibration pressurizing unit to move up and down;

[0066] The X-direction calibration pressurizing unit is used for calibration pressurizing of the battery module in the X-direction, and the X-direction calibration pressurizing unit includes an X-direction drive 213, an X-direction axis fixing plate 214, an X-direction transmission shaft 215, a shaft sleeve 218 and a pressing plate 219. Two groups of X-direction transmission shafts 215 are separately arranged on the X-direction axis fixing plate 214, and are matched with the slide 216 in the form of shaft holes through corresponding shaft sleeves 218. The X-direction drive 213 is installed on the slide 216 and is located between the two groups of X-direction transmission shafts 215. The two groups of X-direction transmission shafts 215 and the X-direction drive 213 are fixedly connected to the pressing plate 219. The X-direction drive 213 is driven, and together with the two groups of X-direction transmission shafts 215, the pressing plate 219 is driven to calibrate and pressurize the battery module in the X-direction.

[0067] It is further explained that the driving stroke of the X-direction drive in the X-direction calibration pressurizing mechanism 210 is adjustable, and the driving stroke of the X-direction drive in the X-direction limit support mechanism 22 is fixed. The X-direction limit support mechanism 22 pre-limits one end of the battery module, and flexibly adjusts the driving stroke of the X-direction drive in the X-direction calibration pressurizing mechanism 210 according to the length of the stacked battery modules to achieve calibration pressurization of the module on the other side in the X direction, so that the use is more in line with actual production needs.

[0068] like Figure 2 , 4 As shown, in order to facilitate installation and fixation, and to make the structure more reasonable, the Y-axis calibration pressurizing mechanism 230 includes a Y-axis drive 231 and a mounting seat 232. The frame 100 is provided with a driving base, and the Y-axis drive 231 is installed on the driving base through an L-shaped mounting seat 232. In the actual operation process, the Y-axis drive 231 is driven, and the push rod of the Y-axis drive 231 is extended and abuts against the Y-axis push rod 315. As the push rod continues to extend, the pre-stacked battery modules can be pressurized and positioned in the Y direction.

[0069] like Figure 4 As shown, in order to lock the stacked battery modules after calibrating and pressurizing them in the X and Y directions, the workbench 310 includes a workbench 311, a Y-direction auxiliary limit 312, an X-direction auxiliary limit 313, a tray bottom plate 314 and a Y-direction push rod 315; wherein,

[0070] The tray bottom plate 314 is arranged on the frame 100, and two work tables 311 arranged side by side are arranged on the tray bottom plate 314, which are used as the working surface for stacking batteries and have insulating and smooth properties to prevent scratching the bottom of the battery and avoid the risk of conductive conduction. Among them, one work table 311 is a reference table fixed on the tray bottom plate 314, and the other work table 311 is a slidable table, and a linear slide rail is installed at the bottom of the slidable table, which is slidably matched with the Y-axis calibration pressurizing mechanism 230 through the linear guide rail;

[0071] An X-direction auxiliary limiter 313 is provided at one end of the tray bottom plate 314 and along its width direction, and the X-direction auxiliary limiter 313 is located on the outside of the work table 311, and Y-direction auxiliary limiters are provided in the length direction of the two work tables 311, and the Y-direction auxiliary limiter 312 and the X-direction auxiliary limiter 313 are combined to serve as a rough positioning of a single row of battery stacking;

[0072] A Y-direction push rod 315 is installed on the Y-direction auxiliary limit 312 on the slidable table, which drives the Y-direction calibration pressurization mechanism 230 to resist the Y-direction push rod 315, so that the working table 311 moves toward the reference table to achieve Y-direction calibration pressurization of the battery module.

[0073] It should be supplemented that a plurality of rows of mounting holes are provided on the tray bottom plate 314 of the working tray 300 for adjusting the position of the X-axis auxiliary limiter 313 , which, combined with the X-axis clamping mechanism 320 , can achieve flexible compatibility of the battery module length.

[0074] like Figure 5 As shown, in order to realize that the battery module can be automatically locked after being calibrated and pressurized in the Y direction, the Y-direction clamping mechanism 330 includes a limit seat 331, a spring tongue 332 and a hook 333; wherein,

[0075] The limiting seat 331 is installed on the tray bottom plate 314 of the workbench 310, and is used to limit the position of the spring tongue 332. The spring tongue 332 is connected to two fixed bases on the tray bottom plate 314 through hinge pins on both sides to achieve rotational movement. The back of the spring tongue 332 has a limiting step for cooperating with the hook 333 for limiting position; the hook 333 is connected to the fixed seats on both sides through cylindrical pins to achieve rotational movement.

[0076] When the battery module is pressurized in the Y direction, the Y-direction auxiliary limit 312 on the slidable table in the work table 311 moves inward to press the tail of the hook 333 so that the hook at the head of the hook 333 rises, driving the spring tongue 332 to rise, and the hook 333 hooks the limit column on the back of the spring tongue 332. At the same time, the tongue of the spring tongue 332 and the limit seat 331 are locked to realize the automatic clamping and limiting of the battery module in the Y direction;

[0077] When the battery module is moved out of the working tray 300, the spring tongue 332 is pressed downward to drive the hook 333 downward synchronously, and the limiting effect becomes invalid; the slidable table returns to its original position through the spring against the bottom of the Y-axis auxiliary limit 312.

[0078] Furthermore, the X-axis clamping mechanism 320 and the Y-axis clamping mechanism 330 of the present invention have the same structure, both of which are automatic clamping and locking mechanisms, or the X-axis clamping mechanism 320 and the Y-axis clamping mechanism 330 have different structures, the X-axis clamping mechanism 320 is a manual locking mechanism, and the Y-axis clamping mechanism 330 is an automatic locking mechanism.

[0079] Furthermore, the present invention can not only realize automatic clamping and locking of the battery module in the X direction, but also can realize manual clamping and locking, such as Figure 6 As shown, in order to enable manual clamping and locking of the battery module in the X-direction, the X-direction clamping mechanism 320 is an elbow locking structure, including an X-direction elbow clamp 321, an adapter plate 322, a transmission shaft 323 and a limit plate 324, the X-direction elbow clamp 321 and the limit plate 324 are connected, the adapter plate 322 is connected with the limit plate 324 through the transmission shaft 323, so as to meet the three-point support and prevent the limit plate 324 from deflecting during the extrusion process; when the X-direction elbow clamp 321 is manually operated to be locked, the adapter plate 322 is pushed to move, and the limit plate 324 is driven to move according to the elbow clamp stroke, so as to realize the X-direction clamping and locking of the battery module.

[0080] Furthermore, in order to facilitate the transportation of the entire structure, a handle is provided on the tray bottom plate 314 to facilitate the transportation of the entire working tray 300.

[0081] In summary, further elaboration of Example 1 is provided. First, personnel place the battery next to the Y-direction auxiliary limit 312 and the X-direction auxiliary limit 313, and stack multiple rows of battery modules into several rows in a single-row stacking manner. The X-direction calibration pressurizing mechanism 210 and the X-direction limit support mechanism 220 descend to the module height. The X-direction limit support mechanism 220 moves along the X-direction to limit the displacement of one side of the module. Then, the X-direction calibration pressurizing mechanism 210 pressurizes the other side of the module according to the set stroke to achieve pressurization calibration in the X direction. Maintain The X-direction pressurization state remains unchanged, and the Y-direction calibration pressurization mechanism 230 pressurizes and calibrates the Y side of the module to achieve calibration pressurization under multi-directional linkage; after maintaining the pressure for a period of time, the Y-direction calibration pressurization mechanism 230 first releases the pressure and releases, and the Y-direction clamping mechanism 330 automatically locks the limit; the X-direction calibration pressurization mechanism 210 and the X-direction limit support mechanism 220 are then released and restored to the initial position, and the X-direction clamping mechanism 320 is manually operated to manually lock the limit, and the module stacking is completed; after the personnel check and find no problems, the current module operation is completed.

[0082] Example 2

[0083] like Figure 1 , 7 As shown, a method for stacking multiple rows of battery modules is provided, wherein the multiple rows of battery modules are stacked using the above-mentioned stacking device, and the stacking includes the following specific steps:

[0084] S1. Preliminary operation is performed in a single-row battery stacking mode to complete stacking of multiple groups of single-row batteries;

[0085] S2. After stacking is completed, the multiple groups of single-row batteries are automatically calibrated and pressurized in the X direction. Specifically, the X-direction limit support mechanism is started to limit and pressurize one end of the stacked multiple-row batteries in the X direction, and then the X-direction calibration and pressurization mechanism is used to calibrate and pressurize the other end of the stacked multiple-row batteries in the X direction;

[0086] S3, when the multiple groups of single-row batteries are pressurized in the X direction, the multiple groups of single-row batteries are pressurized in the Y direction by the Y-direction calibration pressurization mechanism to achieve joint calibration, so that the multiple groups of single-row batteries are stacked to form a whole battery module;

[0087] S4, the Y-direction calibration pressurizing mechanism is released and released, and the Y-direction clamping mechanism is automatically locked to limit the battery module in the Y direction;

[0088] S5. The X-axis calibration pressurizing mechanism and the X-axis limit support mechanism are depressurized and loosened, and the X-axis clamping mechanism is used to limit and lock the battery module in the X direction to complete the stacking of multiple rows of battery modules.

[0089] The multi-row battery module stacking equipment provided by the present invention can adjust the stacking stroke according to the size of the product, and has high flexible adjustment ability and stacking efficiency. The X-direction calibration pressurizing mechanism 210 and the Y-direction calibration pressurizing mechanism 230 provided by the present invention realize multi-directional synchronous calibration, prevent the battery rebound dislocation caused by asynchronous calibration, realize multi-directional joint pressurization calibration, and have better positioning accuracy; through the application of the X-direction clamping mechanism 320 and the Y-direction clamping mechanism 330, multi-directional hard limit is realized, and the risk of module movement in the pallet is effectively eliminated. The work pallet is provided with an X-direction clamping structure and a Y-direction clamping mechanism, which effectively fixes the module during transportation and avoids the risk of subsequent weld offset. Through the application of the multi-row battery module stacking equipment with automatic calibration, a stacking table can complete the single-row stacking of all batteries, with strong automatic calibration capability and good compatibility, which can effectively improve the stacking efficiency.

[0090] When the multi-row battery module stacking equipment described in the present invention is used for manual operation, it can be operated in a single-row stacking manner; relative to the batteries being pre-grouped in columns and then stacked, the above arrangement reduces the time for multiple centering and calibration of the pre-grouped batteries, thereby improving the stacking efficiency.

[0091] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A stacking device for multiple rows of battery modules, characterized in that: It comprises a frame (100), a calibration pressurizing mechanism (200) and a working tray (300); wherein, The frame (100) is used as a fixed support for the calibration pressurizing mechanism (200) and the working tray (300); The calibration pressurizing mechanism (200) comprises an X-direction calibration pressurizing mechanism (210), an X-direction position limiting support mechanism (220) and a Y-direction calibration pressurizing mechanism (230); the X-direction calibration pressurizing mechanism (210) and the X-direction position limiting support mechanism (220) are respectively arranged at two ends of the length direction of the rack (100), and are used for calibration pressurizing on one side of the X-direction and position limiting pressurizing on the other side of the battery module, so as to realize positioning of the pre-stacked battery module in the X-direction; the Y-direction calibration pressurizing mechanism (230) is arranged on one side of the width direction of the rack (100), and cooperates with the X-direction calibration pressurizing mechanism (210) to position the pre-stacked battery module in the Y-direction; The work tray (300) comprises a workbench (310), an X-direction clamping mechanism (320) and a Y-direction clamping mechanism (330); the workbench (310) is arranged on a frame (100), and the Y-direction calibration pressurizing mechanism (230) is located outside the workbench (310); an X-direction clamping mechanism (320) is arranged at one end of the workbench (310) and along its width direction, and is manually locked or automatically locked after the battery module is depressurized, so that the battery module is fixed in the X direction; a Y-direction clamping mechanism (330) is arranged at one side of the workbench (310) and along its length direction, and is automatically locked after the battery module is depressurized, so that the battery module is fixed in the Y direction.

2. The stacking device for multiple rows of battery modules according to claim 1, characterized in that: The frame (100) comprises a frame base (110) and an upper support (120); wherein: The bottom of the frame base (110) is provided with a pulley for easy movement, and the four corners of the frame base (110) are also provided with positioning angle pieces for fixing the frame as a whole; The upper supports (120) are installed at both ends of the frame base (110) in the length direction, and are used for installing and fixing the X-direction calibration pressurizing mechanism (210) and the X-direction limiting support mechanism (220).

3. The stacking device for multiple rows of battery modules according to claim 1, characterized in that: The X-direction calibration pressurizing mechanism (210) and the X-direction limit support mechanism (220) have the same structure, both comprising an upper and lower drive unit and an X-direction calibration pressurizing unit; wherein: The up-down driving unit is connected with the X-direction calibration pressurizing unit and is used to drive the X-direction calibration pressurizing unit to move up and down, so as to facilitate the entry and exit of the workbench (310) for loading the battery module. The up-down driving unit comprises a Z-direction driving (211), a Z-direction transmission shaft (212), a slide table (216) and a guide rail (217); the Z-direction driving (211) is fixed on an upper support (120) of the frame (100); two ends of the slide table (216) are slidably matched with the upper support (120) via corresponding guide rails (217); and the Z-direction driving (211) drives the slide table (216) via the Z-direction transmission shaft (212) to move up and down along the guide rail (217) relative to the upper support (120) to synchronously drive the X-direction calibration pressurizing unit; The X-direction calibration pressurizing unit is used for calibration pressurizing of the battery module in the X-direction, and the X-direction calibration pressurizing unit comprises an X-direction drive (213), an X-direction axis fixing plate (214), an X-direction transmission shaft (215), a shaft sleeve (218) and a pressing plate (219), two groups of X-direction transmission shafts (215) are separately arranged on the X-direction axis fixing plate (214), and are matched with the slide table (216) in the form of shaft holes through corresponding shaft sleeves (218), the X-direction drive (213) is installed on the slide table (216) and is located between the two groups of X-direction transmission shafts (215), and the two groups of X-direction transmission shafts (215) and the X-direction drive (213) are fixedly connected to the pressing plate (219), the X-direction drive (213) is driven, and together with the two groups of X-direction transmission shafts (215), the pressing plate (219) is driven to calibrate and pressurize the battery module in the X-direction, The driving stroke of the X-direction drive in the X-direction calibration pressurizing mechanism (210) is adjustable, and the driving stroke of the X-direction drive in the X-direction limiting support mechanism (220) is fixed.

4. The stacking device for multiple rows of battery modules according to claim 1, characterized in that: The Y-direction calibration pressurizing mechanism (230) comprises a Y-direction drive (231) and a mounting seat (232); a drive base is provided on the frame (100); the Y-direction drive (231) is mounted on the drive base via an L-shaped mounting seat (232); the Y-direction drive (231) is driven to pressurize and position the pre-stacked battery module in the Y direction.

5. The stacking device for multiple rows of battery modules according to claim 1, characterized in that: The workbench (310) comprises a workbench plate (311), a Y-direction auxiliary limiter (312), an X-direction auxiliary limiter (313), a tray bottom plate (314) and a Y-direction push rod (315); wherein, The tray bottom plate (314) is arranged on the frame (100), and two work tables (311) arranged side by side are arranged on the tray bottom plate (314), which are used as a working surface for stacking batteries and have insulation and smooth properties. One work table (311) is a reference table fixed on the tray bottom plate (314), and the other work table (311) is a slidable table, and a linear guide rail is installed at the bottom of the slidable table, which is slidably matched with the Y-axis calibration pressurizing mechanism (230) through the linear guide rail. An X-direction auxiliary limiter (313) is provided at one end of the tray bottom plate (314) and along its width direction, and the X-direction auxiliary limiter (313) is located outside the work table (311), and Y-direction auxiliary limiters are provided in the length direction of the two work tables (311), and the Y-direction auxiliary limiter (312) and the X-direction auxiliary limiter (313) are combined to serve as a rough positioning for a single-row battery stack; A Y-direction push rod (315) is installed on the Y-direction auxiliary limiter (312) on the slidable table to drive the Y-direction calibration pressurization mechanism (230) to resist the Y-direction push rod (315) so that the working table (311) moves toward the reference table to achieve Y-direction calibration pressurization of the battery module.

6. The stacking device for multiple rows of battery modules according to claim 1, characterized in that: The Y-direction clamping mechanism (330) comprises a limit seat (331), a spring tongue (332) and a hook (333); wherein: The limiting seat (331) is installed on the tray bottom plate (314) of the workbench (310) and is used for limiting the position of the spring tongue (332). The spring tongue (332) is connected to two fixed bases on the tray bottom plate (314) through hinge pins on both sides thereof to achieve rotational motion. The back of the spring tongue (332) is provided with a limiting step for cooperating with the hook (333) for limiting the position. The hook (333) is connected to the fixed seats on both sides through cylindrical pins to achieve rotational motion. When the battery module is pressurized in the Y direction, the tail of the hook (333) is pressed so that the hook at the head of the hook (333) rises, driving the spring tongue (332) to rise, and the hook (333) hooks the limiting column on the back of the spring tongue (332), and at the same time, the tongue of the spring tongue (332) and the limiting seat (331) are locked to realize automatic clamping and limiting of the battery module in the Y direction; When the battery module is moved out of the working tray (300), the spring tongue (332) is pressed downward, driving the hook (333) to move downward synchronously, and the limiting function becomes invalid.

7. The stacking device for multiple rows of battery modules according to claim 1, characterized in that: The X-direction clamping mechanism (320) and the Y-direction clamping mechanism (330) have the same structure and are both automatic clamping and locking mechanisms, or the X-direction clamping mechanism (320) and the Y-direction clamping mechanism (330) have different structures, the X-direction clamping mechanism (320) is a manual locking mechanism, and the Y-direction clamping mechanism (330) is an automatic locking mechanism.

8. The stacking device for multiple rows of battery modules according to claim 1, characterized in that: The X-direction clamping mechanism (320) is a toggle clamp locking structure, comprising an X-direction toggle clamp (321), an adapter plate (322), a transmission shaft (323) and a limit plate (324); the X-direction toggle clamp (321) and the limit plate (324) are connected; the adapter plate (322) is connected to the limit plate (324) through the transmission shaft (323) to meet three-point support and prevent the limit plate (324) from deflecting during the extrusion process; when the X-direction toggle clamp (321) is manually operated to be locked, the adapter plate (322) is pushed to move, and the limit plate (324) is driven to move according to the toggle clamp stroke, so as to achieve X-direction clamping and locking of the battery module.

9. The stacking device for multiple rows of battery modules according to claim 5, characterized in that: The tray bottom plate (314) is provided with a handle for facilitating the overall transportation of the working tray (300).

10. A method for stacking multiple rows of battery modules, characterized in that: The stacking of multiple rows of battery modules using the stacking device according to any one of claims 1 to 9 comprises the following specific steps: S1. Preliminary operation is performed in a single-row battery stacking mode to complete stacking of multiple groups of single-row batteries; S2. After stacking is completed, the multiple groups of single-row batteries are automatically calibrated and pressurized in the X direction. Specifically, the X-direction limit support mechanism is started to limit and pressurize one end of the stacked multiple-row batteries in the X direction, and then the X-direction calibration and pressurization mechanism is used to calibrate and pressurize the other end of the stacked multiple-row batteries in the X direction; S3, when the multiple groups of single-row batteries are pressurized in the X direction, the multiple groups of single-row batteries are pressurized in the Y direction by the Y-direction calibration pressurization mechanism to achieve joint calibration, so that the multiple groups of single-row batteries are stacked to form a whole battery module; S4, the Y-direction calibration pressurizing mechanism is released and released, and the Y-direction clamping mechanism is automatically locked to limit the battery module in the Y direction; S5. The X-axis calibration pressurizing mechanism and the X-axis limit support mechanism are depressurized and loosened, and the X-axis clamping mechanism is used to limit and lock the battery module in the X direction to complete the stacking of multiple rows of battery modules.

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