Stacking tool for battery modules

Abstract

The utility model relates to a stacking tool for battery modules. The stacking tool comprises a base frame, the first pressing plate assemblies are arranged on the base frame and arranged in pairs in the first direction, an assembling area used for stacking battery modules is arranged between the first pressing plate assemblies arranged in pairs, and at least one of the first pressing plate assemblies arranged in pairs is slidably connected with the base frame in the first direction; the first pressure maintaining mechanism is arranged on the base frame and connected with the first pressing plate assemblies connected to the base frame in a sliding mode so that the first pressing plate assemblies arranged in pairs can be far away from each other or approach to each other. The second pressing plate assembly is arranged opposite to the assembling area in the second direction, and the first direction is different from the second direction; the second pressure maintaining mechanism is arranged on the base frame and connected with the second pressing plate assembly so as to drive the second pressing plate assembly to be away from or close to the assembling area. Therefore, when the battery modules are stacked, the battery modules are subjected to pressure maintaining force from the first direction and the second direction at the same time, so that the flatness is improved, the welding difficulty between the battery cell pole columns and the bus bars is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a stacking tool for battery modules. Background Art

[0002] A battery module usually includes a liquid cooling plate, a bus and multiple array-arranged battery cells, wherein the liquid cooling plate is installed at the bottom of the multiple array-arranged battery cells and between two columns of battery cells, while the bus is installed on the top of the multiple array-arranged battery cells. Specifically, the bus plate is welded to the poles on the upper end surface of the battery cell to collect and output the current of multiple battery cells.

[0003] However, in the related art, the liquid cooling plate and multiple array-arranged battery cells are usually assembled by manual stacking, which will result in low module size accuracy after the battery cells are grouped, especially causing each battery cell to have a different height, that is, the poles of each battery cell are not in the same plane, which will increase the difficulty of welding between the battery cell poles and the bus, not only reducing the assembly efficiency, but also easily causing poor welding, thereby reducing the quality of the battery module. Utility Model Content

[0004] The purpose of the utility model is to provide a stacking tool for battery modules to solve the problem of low dimensional accuracy of battery modules after stacking in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A stacking tool for battery modules comprises: a base frame; first pressure plate assemblies arranged on the base frame and arranged in pairs in a first direction, an assembly area for stacking battery modules is between the paired first pressure plate assemblies, and at least one of the paired first pressure plate assemblies is a movable pressure plate assembly, which is slidably connected to the base frame along the first direction; a first pressure maintaining mechanism arranged on the base frame, connected to the first pressure plate assemblies slidably connected to the base frame, so that the paired first pressure plate assemblies move away from or approach each other; a second pressure plate assembly, arranged opposite to the assembly area along a second direction, the first direction and the second direction being different; a second pressure maintaining mechanism arranged on the base frame, connected to the second pressure plate assembly, so as to drive the second pressure plate assembly to move away from or approach the assembly area.

[0007] Optionally, the first pressure plate assembly includes a first pressure plate and a first supporting plate connected to each other, the first supporting plate is arranged on the base frame and is arranged opposite to the second pressure plate assembly along the second direction, the assembly area is located between the first supporting plate and the second pressure plate assembly, and the first pressure plate of one of the paired first pressure plate assemblies is arranged opposite to the first pressure plate of the other in the first direction.

[0008] Optionally, it further comprises a first limit block, which is arranged on at least one of the first pressure plate assemblies arranged in pairs.

[0009] The first limiting block is configured to form an avoidance gap between the first bearing plate of one of the paired first pressure plate assemblies and the first bearing plate of the other one.

[0010] Optionally, it further includes a positioning component, which is arranged on the first pressure plate assembly, and at least a part of the positioning component is located on a side of the assembly area facing the third direction; the first direction, the second direction and the third direction are different from each other.

[0011] Optionally, the positioning assembly includes a fixed block and an adjustable pressure block assembly respectively arranged at two opposite ends of the first pressure plate assembly in the third direction, and the adjustable pressure block assembly includes a pressure block mounting frame, an adjustable pressure block and a pressure block driving member; wherein, the pressure block mounting frame is connected to the first pressure plate assembly; the pressure block driving member is arranged on the pressure block mounting frame and connected to the adjustable pressure block; the assembly area is located between the adjustable pressure block and the fixed block, and the pressure block driving member can drive the adjustable pressure block away from or close to the fixed block.

[0012] Optionally, a limiting assembly is further included on the base frame, and the limiting assembly is located on a side of the first pressing plate assembly slidably connected to the base frame away from the assembly area.

[0013] Optionally, the limiting assembly includes a driving member mounting frame, a second limiting block and a limiting block driving member, the second limiting block faces the first pressure plate assembly, and the limiting block driving member is disposed on the driving member mounting frame and connected to the second limiting block.

[0014] Optionally, the second pressure-maintaining mechanism includes a second mounting frame, a pressure-maintaining driving member and a limiting column; wherein, the second mounting frame and the limiting column are both arranged on the base frame, the pressure-maintaining driving member is arranged on the second mounting frame, and is arranged in sequence with the limiting column in a direction close to the base frame; the pressure-maintaining driving member is connected to the second pressure plate assembly, and the pressure-maintaining driving member can move to abut the limiting column to drive the second pressure plate assembly close to the assembly area.

[0015] Optionally, it also includes an adjustable supporting assembly for supporting a liquid cooling plate of the battery module. The adjustable supporting assembly is arranged on the base frame, and the adjustable supporting assembly is used to lift the liquid cooling plate thereon to a first preset height so that the liquid cooling plate and the battery cells in the assembly area are spaced apart from each other along the second direction.

[0016] Optionally, the adjustable carrying assembly includes a second carrying plate and a carrying plate driving mechanism, the carrying plate driving mechanism is arranged on the base frame and connected to the second carrying plate, the second carrying plate is used to carry the liquid cooling plate, and the carrying plate driving mechanism is used to drive the liquid cooling plate to a first preset height along with the second carrying plate.

[0017] Optionally, a positioning pin is provided on the second bearing plate, and the positioning pin is used to cooperate with the positioning hole on the liquid cooling plate.

[0018] Optionally, the adjustable bearing assembly is located on one side of the first pressure plate assembly along the third direction, the first direction, the second direction and the third direction are different from each other, and the carrier driving mechanism is slidably connected to the base frame along the first direction.

[0019] Optionally, an adjustment mechanism is further included, which is arranged on the base frame and can drive the carrier driving mechanism to move along the first direction.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0021] The stacking tool disclosed in the present application is used for stacking battery modules, and the stacking tool includes: a base frame; first pressure plate assemblies arranged on the base frame and arranged in pairs in a first direction, an assembly area for stacking battery modules is between the paired first pressure plate assemblies, and at least one of the paired first pressure plate assemblies is slidably connected to the base frame along the first direction; a first pressure maintaining mechanism arranged on the base frame, connected to the first pressure plate assemblies slidably connected to the base frame, so that the paired first pressure plate assemblies move away from or approach each other; a second pressure plate assembly, arranged opposite to the assembly area along a second direction, the first direction and the second direction being different; a second pressure maintaining mechanism arranged on the base frame, connected to the second pressure plate assembly, so as to drive the second pressure plate assembly to move away from or approach the assembly area.

[0022] During stacking, the two rows of battery cells of the battery module are placed in the assembly area in an inverted manner, that is, the top of the battery cell pole is placed in the assembly area toward the base frame, and the bottom of the battery cell is placed toward the second pressure plate assembly. The liquid cooling plate is then placed between the battery cell and the second pressure plate assembly. The first pressure plate assembly is then driven to move by the first pressure holding mechanism to make the paired first pressure plate assemblies approach each other so that the two rows of battery cells fit together, thereby providing the holding pressure required for battery module stacking in a first direction. The second pressure plate assembly is then driven by the second pressure holding mechanism to approach the assembly area, so as to drive the liquid cooling plate to fit the battery cell, thereby providing the holding pressure required for battery module stacking in a second direction.

[0023] In this way, when the battery modules in the assembly area are stacked, they are subjected to the holding pressure from the first direction and the second direction at the same time, thereby ensuring the stacking accuracy. In particular, the holding pressure along the second direction can ensure that the poles of each battery cell are in the same plane, thereby improving the flatness, reducing the difficulty of welding between the battery cell poles and the busbar, improving the assembly efficiency, reducing the phenomenon of poor welding, and improving the quality of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 This utility model Figure 1 A magnified view of point I;

[0026] Figure 3 This utility model Figure 1 The enlarged view of II;

[0027] Figure 4 It is the internal structure diagram of the utility model;

[0028] Figure 5 This utility model Figure 4 The enlarged view of point III;

[0029] Figure 6 This utility model Figure 4 A magnified view of IV;

[0030] Figure 7 This utility model Figure 4 Enlarged view of V.

[0031] icon:

[0032] 1-Assembly area, 2-Avoidance gap,

[0033] X-first direction, Z-second direction, Y-third direction,

[0034] 10- Base frame,

[0035] 20-first pressing plate assembly, 20a-movable pressing plate assembly, 20b-fixed pressing plate assembly,

[0036] 21- first pressure plate,

[0037] 22- first load-bearing plate,

[0038] 23- first limit block,

[0039] 24- abutment block,

[0040] 30-First pressure-maintaining mechanism,

[0041] 40- second pressure plate assembly,

[0042] 50-Second pressure-maintaining mechanism,

[0043] 51-pressure-maintaining driving member, 52-limiting column, 53-second mounting frame, 54-connecting plate,

[0044] 60-Limiting component,

[0045] 61-driving member mounting frame, 62-second limit block, 63-limit block driving member, 64-limit block mounting frame, 65-fastening screw,

[0046] 70-Adjustable load bearing assembly,

[0047] 71- second bearing plate,

[0048] 711-Location pin,

[0049] 72-Carrier drive mechanism,

[0050] 73-Adjustment mechanism,

[0051] 731-fixed frame, 732-elastic abutment column, 733-adjustable screw,

[0052] 81-Manual valve,

[0053] 82-pressure regulating valve,

[0054] 90-positioning components,

[0055] 91 -fixed block, 92 -pressing block mounting frame, 93 -adjustable pressing block, 94 -pressing block driving member. DETAILED DESCRIPTION

[0056] The utility model is described in detail below in conjunction with the accompanying drawings.

[0057] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0058] In the related art, the liquid cooling plate and multiple array-arranged battery cells are usually assembled by manual stacking, which will result in low module size accuracy after the battery cells are grouped, especially resulting in different heights of each battery cell, that is, the poles of each battery cell are not in the same plane, which will increase the difficulty of welding between the battery cell poles and the busbar, not only reducing the assembly efficiency, but also prone to poor welding, reducing the quality of the battery module. Therefore, in order to solve such problems, the technical solution of the present application is produced, and the following is combined with Figure 1 to Figure 7 To elaborate.

[0059] Example 1

[0060] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The present application discloses a stacking tool for a battery module. The battery module is usually composed of two rows of battery cells, a liquid cooling plate and a bus. The two rows of battery cells are arranged side by side. The first plate body of the liquid cooling plate is located at the bottom of the battery module and fits the bottom surface of the battery cell. The second plate body of the liquid cooling plate is located between the two rows of battery cells. The bus is arranged at the top of the battery module and faces the top surface of the battery cell. The bus is welded to the poles arranged on the top surface of the battery cell, thereby realizing the bus output of multiple battery cells.

[0061] The stacking tool may include a base frame 10, a first pressing plate assembly 20, a first pressure-maintaining mechanism 30, a second pressing plate assembly 40 and a second pressure-maintaining mechanism 50. The base frame 10 is the foundation for setting the stacking tool, and the base frame 10 is generally a working platform, and universal wheels may be installed at the bottom of the base frame 10 to adjust the working position.

[0062] The first platen assemblies 20 are arranged on the base frame 10 and are arranged in pairs in the first direction X. The first direction X can be understood as the width direction of the stacking tooling. The assembly area 1 for stacking battery modules is between the paired first platen assemblies 20. At least one of the paired first platen assemblies 20 is a movable platen assembly 20a, which is slidably connected to the base frame 10 along the first direction X. For example, the paired first platen assemblies 20 are all movable platen assemblies 20a. In the present embodiment, one of the paired first platen assemblies 20 is a movable platen assembly 20a, and the other is a fixed platen assembly 20b, which is fixedly connected to the base frame 10, so that the fixed platen assembly 20b is used as a positioning reference along the first direction X when stacking battery modules to ensure the stacking accuracy. A slide rail can be set on the base frame 10, and a slider can be set on the movable pressure plate assembly 20a. The slider and the slide rail between the base frame 10 and the movable pressure plate assembly 20a are slidably connected along the first direction X, so that the movable pressure plate assembly 20a is slidably connected to the base frame 10. Considering the smoothness of the movement, the slider and the slide rail combination between the first pressure plate assembly 20 and the base frame 10 can be set in multiple groups along the third direction Y. The third direction Y can be understood as the length direction of the stacking tooling.

[0063] The first pressure-maintaining mechanism 30 is provided on the base frame 10 and connected to the movable pressure plate assembly 20a, so that the first pressure plate assemblies 20 arranged in pairs move away from or toward each other. For example, the first pressure-maintaining mechanism 30 is a cylinder mechanism, so as to drive the movable pressure plate assembly 20a to move, so as to provide a pressure-maintaining force along the first direction X to the battery module in the assembly area 1. Multiple groups of the first pressure-maintaining mechanism 30 can be provided along the third direction Y to provide driving force at multiple points, so as to ensure the stability of the pressure-maintaining force applied to the battery module when it is stacked, and to improve the stacking accuracy of the battery module.

[0064] The second pressing plate assembly 40 is arranged relative to the assembly area 1 along the second direction Z. The first direction X is different from the second direction Z. The second direction Z can be understood as the height direction of the stacking tool. The second pressure-maintaining mechanism 50 is arranged on the base frame 10. The second pressure-maintaining mechanism 50 is connected to the second pressing plate assembly 40 to drive the second pressing plate assembly 40 away from or close to the assembly area 1, thereby providing the holding pressure required for battery module stacking in the second direction Z.

[0065] During stacking, the two rows of battery cells of the battery module are placed in the assembly area 1 in an inverted manner, that is, the top of the battery cell pole is placed in the assembly area 1 toward the base frame 10, and the bottom of the battery cell is placed toward the second pressure plate assembly 40, and then the liquid cooling plate is placed between the battery cell and the second pressure plate assembly 40, and then the first pressure holding mechanism 30 drives the first pressure plate assembly 20 to move, so that the paired first pressure plate assemblies 20 approach each other, and the two rows of battery cells are fitted together, so as to provide the holding pressure required for battery module stacking in the first direction X, and then the second pressure holding mechanism 50 drives the second pressure plate assembly 40 to approach the assembly area 1, so as to drive the liquid cooling plate to fit the battery cell, thereby providing the holding pressure required for battery module stacking in the second direction Z.

[0066] In this way, when the battery modules in the assembly area 1 are stacked, they are simultaneously subjected to the holding pressure from the first direction X and the second direction Z, thereby ensuring the stacking accuracy. In particular, the holding pressure along the second direction Z can ensure that the poles of each battery cell are in the same plane, thereby improving the flatness, reducing the difficulty of welding between the battery cell poles and the busbar, improving the assembly efficiency, reducing the phenomenon of poor welding, and improving the quality of the battery module.

[0067] Alternatively, if Figure 4 and Figure 5 As shown, the first pressure plate assembly 20 may include a first pressure plate 21 and a first supporting plate 22 connected to each other. The first supporting plate 22 is arranged on the base frame 10 and is arranged opposite to the second pressure plate assembly 40 along the second direction Z. The assembly area 1 is located between the first supporting plate 22 and the second pressure plate assembly 40. The first supporting plate 22 is used to support the battery module. The first pressure plate 21 of one of the first pressure plate assemblies 20 arranged in pairs is arranged opposite to the first pressure plate 21 of the other in the first direction X, that is, the first pressure plate 21 of the movable pressure plate assembly 20a is arranged opposite to the first pressure plate 21 of the fixed pressure plate assembly 20b. In this way, the first pressure plates 21 arranged opposite to each other can cooperate with each other to provide a holding pressure along the first direction X when the battery modules are stacked; and the first supporting plate 22 cooperates with the second pressure plate assembly 40 to provide a holding pressure along the second direction Z when the battery modules are stacked. The battery module is usually composed of two rows of battery cells. When stacking, one row of battery cells is placed on each first supporting plate 22, and then the two rows of battery cells move with the first pressing plate assembly 20 and approach each other, thereby achieving stacking along the first direction X.

[0068] Alternatively, if Figure 4 and Figure 5 As shown, the stacking tooling may further include a first limit block 23, which is disposed on at least one of the first pressure plate assemblies 20 arranged in a pair, and the first limit block 23 is configured to form an avoidance gap 2 between the first supporting plate 22 of one of the first pressure plate assemblies 20 arranged in a pair and the first supporting plate 22 of the other, and the avoidance gap 2 and the assembly area 1 are sequentially connected along a direction away from the base frame 10.

[0069] For example, the first limit block 23 is only provided on one of the first pressure plate assemblies 20 arranged in pairs, that is, only on the movable pressure plate assembly 20a or the fixed pressure plate assembly 20b, or each first pressure plate assembly 20 is provided with a first limit block 23, and the first limit block 23 can be provided on the first supporting plate 22 or on the first pressure plate 21 without special restrictions. In the present embodiment, the first supporting plate 22 of each first pressure plate assembly 20 is provided with a first limit block 23, and the first limit blocks 23 provided on each first pressure plate assembly 20 correspond to each other along the first direction X. In this way, when the first pressure plate assemblies 20 arranged in pairs approach each other, the first limit blocks 23 provided on different first pressure plate assemblies 20 abut against each other, thereby avoiding direct contact between the two first supporting plates 22. In this way, on the first aspect, the first limit block 23 can be used as a protective part or a replacement part to avoid collision and damage to the first supporting plate 22; on the second aspect, during the stacking process, the avoidance gap 2 can avoid the joint position between the two columns of battery cells in the battery module, thereby better ensuring that the battery cells are placed flush, and then making the poles of each battery cell better in the same plane, thereby improving the accuracy of the module after stacking.

[0070] Alternatively, if Figures 4 to 6 As shown, the stacking tooling may further include a positioning assembly 90, which is disposed on the first pressure plate assembly 20. At least a portion of the positioning assembly 90 is located on the side of the assembly area 1 facing the third direction Y, so as to serve as a positioning reference along the third direction Y when the battery modules are stacked, thereby further improving the stacking accuracy of the battery modules.

[0071] Optionally, for the specific structure of the positioning assembly 90, the positioning assembly 90 may include a fixed block 91 and an adjustable pressure block assembly respectively arranged at two opposite ends of the first pressure plate assembly 20 in the third direction Y. The adjustable pressure block assembly may include a pressure block mounting frame 92, an adjustable pressure block 93 and a pressure block driving member 94; wherein the pressure block mounting frame 92 is connected to the first pressure plate assembly 20; the pressure block driving member 94 is arranged on the pressure block mounting frame 92 and connected to the adjustable pressure block 93; the assembly area 1 is located between the adjustable pressure block 93 and the fixed block 91; the pressure block driving member 94 can drive the adjustable pressure block 93 away from or close to the fixed block 91, for example, the pressure block driving member 94 is a spiral transmission and cooperates with an adjustment screw of the pressure block mounting frame 92, and when the adjustment screw rotates, it can drive the adjustable pressure block 93 to move away from or close to the fixed block 91.

[0072] In this way, the fixed block 91 serves as the positioning reference of the battery module along the third direction Y, so that the battery module is in the positioning position along the third direction Y, and the adjustable pressure block assembly provides clamping force through the adjustable pressure block 93, thereby cooperating with the fixed block 91 to clamp and fix the battery module, so that the battery module is kept in the positioning position along the third direction Y, thereby improving the positioning accuracy. In this way, the stacking tool uses the first pressure plate 21 of the fixed pressure plate assembly 20b as the positioning reference along the first direction X, the first bearing plate 22 as the positioning reference along the second direction Z, and the fixed block 91 as the positioning reference along the third direction Y, thereby realizing the freedom constraint of the battery module in three different directions, further ensuring the stacking accuracy.

[0073] In some other optional implementation schemes, adjustable pressure block assemblies may be provided at both opposite ends of the first pressure plate assembly 20 in the third direction Y, so as to achieve clamping and fixing of the battery module, which will not be described in detail here.

[0074] Optionally, the adjustable pressure block 93 is connected to the pressure block mounting frame 92 by sliding along the third direction Y. For example, a guide hole can be set on the pressure block mounting frame 92 along the third direction Y, and the adjustable pressure block 93 can be slidably inserted into the guide hole, thereby achieving guiding cooperation between the adjustable pressure block 93 and the pressure block mounting frame 92, thereby achieving constraint on the movement path of the adjustable pressure block 93 and improving the stacking accuracy of the battery module.

[0075] Alternatively, if Figure 4 and Figure 7 As shown, the stacking tool may further include a limit assembly 60 disposed on the base frame 10, and a plurality of limit assemblies 60 may be disposed in the first direction X, and the limit assembly 60 is located on the side of the movable platen assembly 20a away from the assembly area 1. By the limit assembly 60 stopping the movable platen assembly 20a, the travel of the movable platen assembly 20a can be limited to prevent excessive movement.

[0076] Optionally, the position of the limit assembly 60 can be fixed, for example, the limit assembly 60 is a stop block, and the present application sets the limit assembly 60 as a position-adjustable structure, for example, the limit assembly 60 may include a drive member mounting frame 61, a second limit block 62 and a limit block driving member 63, the second limit block 62 faces the movable pressure plate assembly 20a, the limit block driving member 63 is arranged on the drive member mounting frame 61 and connected to the second limit block 62, the limit block driving member 63 can drive the second limit block 62 away from or close to the movable pressure plate assembly 20a, and then the stop position of the movable pressure plate assembly 20a can be adjusted to control the stroke of the movable pressure plate assembly 20a.

[0077] Furthermore, the limiting assembly 60 may further include a limiting block mounting frame 64 , and the second limiting block 62 is slidably disposed on the limiting block mounting frame 64 in the first direction X, thereby realizing path constraint on the second limiting block 62 and improving the movement accuracy of the second limiting block 62 .

[0078] Furthermore, the limit block driving member 63 can be an adjustment screw, and the screw transmission is matched with the driving member mounting frame 61, and the screw transmission method can further improve the motion accuracy. At the same time, the limit block mounting frame 64 and the driving member mounting frame 61 can be provided with positioning screw holes, and the positioning screw holes are threadedly connected to the set screws 65. By screwing the set screws 65 in and out, the second limit block 62 and the limit block driving member 63 can be fixed or released, which facilitates the operation of the limit assembly 60.

[0079] Furthermore, an abutment block 24 can be set on the movable pressure plate assembly 20a, and the abutment block 24 and the second limit block 62 are set toward each other. When the movable pressure plate assembly 20a moves, the second limit block 62 can abut against the abutment block 24 to achieve the limitation of the movable pressure plate assembly 20a. In this way, direct contact between other components on the movable pressure plate assembly 20a and the limit assembly 60 can be avoided. The abutment block 24 can be used as a maintenance replacement part to reduce the maintenance cost of the device of the present application.

[0080] Alternatively, if Figure 1 and Figure 2 As shown, the second pressure-maintaining mechanism 50 may include a second mounting frame 53, a pressure-maintaining driving member 51 and a limiting column 52. The second mounting frame 53 and the limiting column 52 are both arranged on the base frame 10, the pressure-maintaining driving member 51 is arranged on the second mounting frame 53, and is arranged in sequence with the limiting column 52 in the direction close to the base frame 10; the pressure-maintaining driving member 51 is connected to the second pressure plate assembly 40, and the pressure-maintaining driving member 51 can be a cylinder mechanism, a push rod mechanism, etc. The pressure-maintaining driving member 51 can move to abut against the limiting column 52 to drive the second pressure plate assembly 40 to approach the assembly area 1, so as to control the stroke of the second pressure plate assembly 40 and prevent the second pressure plate assembly 40 from over-extruding the battery module in the assembly area 1.

[0081] Furthermore, the second pressure-maintaining mechanism 50 may also include a connecting plate 54, which is respectively connected to the pressure-maintaining driving member 51 and the second pressure plate assembly 40, and is located between the pressure-maintaining driving member 51 and the limiting column 52, so that the pressure-maintaining driving member 51 can abut against the limiting column 52 through the connecting plate 54. The second mounting frame 53 is provided with a slide rail extending in the second direction Z, and the connecting plate 54 is provided with a slider slidably connected to the slide rail. Through the guiding action of the slide rail slider along the second direction Z, the movement path of the connecting plate 54 can be constrained, thereby improving the movement accuracy of the second pressure plate assembly 40 to ensure the stacking accuracy of the battery module.

[0082] Furthermore, the second pressure-maintaining mechanisms 50 can be arranged in pairs along the third direction Y, and the first pressure plate assembly 20 is located between the second pressure-maintaining mechanisms 50 arranged in pairs. The two opposite ends of the second pressure plate assembly 40 are respectively connected to a second pressure-maintaining mechanism 50 to transmit the driving force more smoothly.

[0083] Optionally, the stacking tool may also include an adjustable bearing assembly 70 for bearing the liquid cooling plate of the battery module, the adjustable bearing assembly 70 being arranged on the base frame 10, and the adjustable bearing assembly 70 being used to lift the liquid cooling plate thereon to a first preset height, so that the liquid cooling plate and the battery cells in the assembly area 1 are spaced from each other along the second direction Z. In this way, during the stacking process, the liquid cooling plate coated with glue may be firstly arranged on the adjustable bearing assembly 70 so as to be suspended above the battery cells in the assembly area 1, to prevent the glue on the liquid cooling plate from being applied to the battery cells, and then the second pressing plate assembly 40 is controlled to press the liquid cooling plate down and bond it to the battery cells, so as to further ensure the stacking accuracy of the module.

[0084] Furthermore, the adjustable bearing assemblies 70 can be arranged in pairs along the third direction Y, and the first pressure plate assembly 20 is located between the adjustable bearing assemblies 70 arranged in pairs. The two opposite ends of the liquid cooling plate can be respectively supported by the adjustable bearing assemblies 70, and the support is more stable.

[0085] Optionally, the adjustable supporting assembly 70 may include a second supporting plate 71 and a supporting plate driving mechanism 72. The supporting plate driving mechanism 72 is arranged on the base frame 10 and connected to the second supporting plate 71. The second supporting plate 71 is used to support the liquid cooling plate. The supporting plate driving mechanism 72 may be a cylinder mechanism, a push rod mechanism, etc. The supporting plate driving mechanism 72 is used to drive the liquid cooling plate to a first preset height along with the second supporting plate 71, so that the liquid cooling plate thereon can be suspended above the battery cell in the assembly area 1. After the second pressure plate assembly 40 is pressed down to achieve bonding between the liquid cooling plate and the battery cell, the second supporting plate 71 is driven by the supporting plate driving mechanism 72 to descend to move away from and separate from the liquid cooling plate, so as to facilitate the stacking of battery modules.

[0086] Alternatively, if Figure 4 and Figure 6 As shown, the second carrier plate 71 may be provided with a positioning pin 711, and the positioning pin 711 is used to cooperate with the positioning hole on the liquid cooling plate. In this way, after the liquid cooling plate is carried on the second carrier plate 71 and suspended above the battery cells in the assembly area 1, the liquid cooling plate can be positioned by the positioning pin 711 to ensure the correctness of the relative position relationship between the liquid cooling plate and the battery cells in the assembly area 1, thereby ensuring the stacking accuracy of the battery module.

[0087] Furthermore, the adjustable bearing assembly 70 is located on one side of the first pressure plate assembly 20 arranged in pair along the third direction Y, and the carrier driving mechanism 72 is connected to the base frame 10 in a sliding manner along the first direction X, so that the position of the liquid cooling plate on the second carrier plate 71 in the first direction X can be adjusted by adjusting the position of the carrier driving mechanism 72, thereby further ensuring the correctness of the relative position relationship between the liquid cooling plate and the battery cell and improving the stacking accuracy of the battery module.

[0088] Furthermore, for the manner in which the carrier driving mechanism 72 is slidably connected to the base frame 10, a slide rail extending along the first direction X can be provided on the base frame 10, and a slide groove or a slider can be provided on the carrier driving mechanism 72 to slidably connect to the slide rail on the base frame 10 along the first direction X.

[0089] Alternatively, if Figure 3 to Figure 5 As shown, the stacking tool may further include an adjustment mechanism 73 , which is disposed on the base frame 10 . The adjustment mechanism 73 can drive the carrier driving mechanism 72 to move along the first direction X. The adjustment mechanism 73 can improve the adjustment accuracy of the carrier driving mechanism 72 .

[0090] Optionally, the adjustment mechanism 73 can be any mechanism that can drive the carrier drive mechanism 72 to move, such as a cylinder mechanism, an electric push rod mechanism, a gear rack mechanism, etc., and the present application can set the adjustment mechanism 73 to include a fixed frame 731, an elastic abutment column 732 and an adjustable screw 733 arranged in pairs along the first direction X, the elastic abutment column 732 is arranged on one of the paired fixed frames 731, and the adjustable screw 733 is threadedly connected to the other of the paired fixed frames 731, and the carrier drive mechanism 72 is located between the elastic abutment column 732 and the adjustable screw 733, so that the position of the carrier drive mechanism 72 can be adjusted by rotating the adjustable screw 733. For example, when the adjustable screw 733 is rotated clockwise, the adjustable screw 733 can abut against the carrier driving mechanism 72 to drive the carrier driving mechanism 72 to move toward the side of the elastic abutment column 732; when the adjustable screw 733 is rotated counterclockwise, the elastic abutment column 732 drives the carrier driving mechanism 72 to abut against the adjustable screw 733 through its own elastic deformation, and drives the carrier driving mechanism 72 to move toward the side where the adjustable screw 733 is located, so that the operation of the adjustment mechanism 73 is more convenient.

[0091] Alternatively, if Figure 1 and Figure 4 As shown, the stacking tooling can also include three manual valves 81, which respectively control the movement of the first pressure-maintaining mechanism 30, the second pressure-maintaining mechanism 50, and the adjustable bearing assembly 70, thereby simplifying the operation difficulty of the device of the present application. Furthermore, the stacking tooling also includes a pressure regulating valve 82 to control the maximum pressure generated by the first pressure-maintaining mechanism 30, the second pressure-maintaining mechanism 50, and the adjustable bearing assembly 70.

[0092] Example 2

[0093] This embodiment introduces a battery module stacking method, which is used in the stacking tool of Embodiment 1. The stacking method is as follows:

[0094] The movable pressure plate assembly 20a and the fixed pressure plate assembly 20b are controlled to separate from each other so that the two rows of battery cells of the battery module are placed in the assembly area 1 in an inverted manner, and are placed on the movable pressure plate assembly 20a and the fixed pressure plate assembly 20b respectively. The inverted mounting here means that the top surface of the battery cell with the pole is placed toward the first supporting plate 22, and the bottom surface of the battery cell is placed toward the second pressure plate assembly 40.

[0095] The adjustable pressure block assembly is manipulated to stack the cells in each column along the third direction Y. Specifically, the pressure block driving member 94 drives the adjustable pressure block 93 to move toward the side where the fixed block 91 is located, so as to clamp the cells in the corresponding column between the adjustable pressure block 93 and the fixed block 91, and use the fixed block 91 as a positioning reference to position the cells in the corresponding column along the third direction Y.

[0096] The carrier plate driving mechanism 72 drives the second carrier plate 71 to be lifted to a first preset height, and sets the glue-coated liquid cooling plate on the second carrier plate 71, specifically as follows: the first plate body of the liquid cooling plate is placed on the second carrier plate 71, so that the first plate body of the liquid cooling plate is suspended directly above the two columns of battery cells; at the same time, the positioning holes on the first plate body of the liquid cooling plate are sleeved on the positioning pins 711 to achieve positioning; and the second plate body of the liquid cooling plate is located between the two columns of battery cells.

[0097] The movable platen assembly 20a is controlled to approach the fixed platen assembly 20b until a first preset distance is reserved between the first limit block 23 on the movable platen assembly 20a and the first limit block 23 on the fixed platen assembly 20b, and at this time, the gap between the two columns of battery cells of the second plate body of the liquid cooling plate is reserved.

[0098] The second pressure-maintaining mechanism 50 drives the connecting plate 54 to abut against the limiting pillar 52 , so that the second pressing plate assembly 40 is close to the assembly area 1 , and presses the first plate body of the liquid cooling plate down to fit the bottom surface of the battery cell.

[0099] The movable pressure plate assembly 20a is controlled to approach the fixed pressure plate assembly 20b until the first limit block 23 on the movable pressure plate assembly 20a and the first limit block 23 on the fixed pressure plate assembly 20b abut against each other, so that the two columns of battery cells are stacked along the first direction X, and the second plate body of the liquid cooling plate is clamped between the two columns of battery cells, and the fixed pressure plate assembly 20b is used as a positioning reference to achieve the positioning of the two columns of battery cells along the first direction X.

[0100] The carrier plate driving mechanism 72 drives the second carrier plate 71 to descend so as to be separated from the first plate body of the liquid cooling plate.

[0101] The pressure is maintained for a preset time until the bonding between the liquid cooling plate and the battery cell is solidified, thereby achieving the stacking of battery modules.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stacking tool for battery modules, characterized in that: include: Base frame (10); First pressing plate assemblies (20) are arranged on the base frame (10) and arranged in pairs in a first direction (X), an assembly area (1) for stacking battery modules is provided between the first pressing plate assemblies (20) arranged in pairs, and at least one of the first pressing plate assemblies (20) arranged in pairs is slidably connected to the base frame (10) along the first direction (X); A first pressure-maintaining mechanism (30) provided on the base frame (10) is connected to the first pressure plate assembly (20) which is slidably connected to the base frame (10) so that the first pressure plate assemblies (20) arranged in pairs move away from or toward each other; a second pressing plate assembly (40) arranged opposite to the assembly area (1) along a second direction (Z), wherein the first direction (X) and the second direction (Z) are different; A second pressure-maintaining mechanism (50) disposed on the base frame (10) is connected to the second pressure plate assembly (40) to drive the second pressure plate assembly (40) to move away from or toward the assembly area (1).

2. The stacking tool according to claim 1, characterized in that: The first pressing plate assembly (20) comprises a first pressing plate (21) and a first supporting plate (22) connected to each other. The first carrier plate (22) is disposed on the base frame (10) and is arranged opposite to the second pressure plate assembly (40) along the second direction (Z); the assembly area (1) is located between the first carrier plate (22) and the second pressure plate assembly (40); The first pressing plate (21) of one of the first pressing plate assemblies (20) arranged in pair is arranged opposite to the first pressing plate (21) of the other one in a first direction (X).

3. The stacking tool according to claim 2, characterized in that: It also includes a first limit block (23), wherein the first limit block (23) is arranged on at least one of the first pressing plate assemblies (20) arranged in a pair. The first limiting block (23) is configured to form an avoidance gap (2) between the first bearing plate (22) of one of the first pressure plate assemblies (20) arranged in a pair and the first bearing plate (22) of the other one.

4. The stacking tool according to claim 1, characterized in that: It also includes a positioning assembly (90), wherein the positioning assembly (90) is arranged on the first pressing plate assembly (20), and at least a portion of the positioning assembly (90) is located on a side of the assembly area (1) facing the third direction (Y); The first direction (X), the second direction (Z), and the third direction (Y) are different from each other.

5. The stacking tool according to claim 4, characterized in that: The positioning assembly (90) comprises a fixed block (91) and an adjustable pressing block assembly respectively arranged at two opposite ends of the first pressing plate assembly (20) in the third direction (Y), The adjustable pressure block assembly comprises a pressure block mounting frame (92), an adjustable pressure block (93) and a pressure block driving member (94); wherein the pressure block mounting frame (92) is connected to the first pressure plate assembly (20); the pressure block driving member (94) is arranged on the pressure block mounting frame (92) and connected to the adjustable pressure block (93); The assembly area (1) is located between the adjustable pressure block (93) and the fixed block (91), and the pressure block driving member (94) is capable of driving the adjustable pressure block (93) away from or close to the fixed block (91).

6. The stacking tool according to claim 1, characterized in that: It also includes a limiting assembly (60) arranged on the base frame (10), and the limiting assembly (60) is located on a side of the first pressing plate assembly (20) slidably connected to the base frame (10) away from the assembly area (1).

7. The stacking tool according to claim 6, characterized in that: The limiting assembly (60) comprises a driving member mounting frame (61), a second limiting block (62) and a limiting block driving member (63). The second limit block (62) faces the first pressure plate assembly (20), and the limit block driving member (63) is arranged on the driving member mounting frame (61) and connected to the second limit block (62).

8. The stacking tool according to claim 1, characterized in that: The second pressure-maintaining mechanism (50) comprises a second mounting frame (53), a pressure-maintaining driving member (51) and a limiting column (52); wherein: The second mounting frame (53) and the limiting column (52) are both arranged on the base frame (10), and the pressure-maintaining driving member (51) is arranged on the second mounting frame (53) and is arranged in sequence with the limiting column (52) in a direction close to the base frame (10); The pressure-maintaining driving member (51) is connected to the second pressing plate assembly (40), The pressure-maintaining driving member (51) is capable of moving to abut against the limiting column (52) to drive the second pressing plate assembly (40) to approach the assembly area (1).

9. The stacking tool according to claim 1, characterized in that: It also includes an adjustable bearing assembly (70) for bearing the liquid cooling plate of the battery module, wherein the adjustable bearing assembly (70) is arranged on the base frame (10). The adjustable bearing assembly (70) is used to lift the liquid cooling plate located thereon to a first preset height so that the liquid cooling plate and the battery cells located in the assembly area (1) are spaced apart from each other along the second direction (Z).

10. The stacking tool according to claim 9, characterized in that: The adjustable bearing assembly (70) comprises a second bearing plate (71) and a bearing plate driving mechanism (72), wherein the bearing plate driving mechanism (72) is arranged on the base frame (10) and connected to the second bearing plate (71), and the second bearing plate (71) is used to bear the liquid cooling plate. The carrier plate driving mechanism (72) is used to drive the liquid cooling plate to the first preset height along with the second carrier plate (71).

11. The stacking tool according to claim 10, characterized in that: The second bearing plate (71) is provided with a positioning pin (711), and the positioning pin (711) is used to cooperate with the positioning hole on the liquid cooling plate.

12. The stacking tool according to claim 10, characterized in that: The adjustable bearing assembly (70) is located on one side of the first pressing plate assembly (20) along a third direction (Y), the first direction (X), the second direction (Z) and the third direction (Y) are different from each other. The carrier plate driving mechanism (72) is slidably connected to the base frame (10) along the first direction (X).

13. The stacking tool according to claim 12, characterized in that: It also comprises an adjustment mechanism (73), wherein the adjustment mechanism (73) is arranged on the base frame (10), and the adjustment mechanism (73) can drive the carrier driving mechanism (72) to move along the first direction (X).

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