Battery module stacking device

Abstract

The utility model relates to a battery module stacking device which comprises a battery tray base which comprises a base plate and trays fixed to the top of the base plate in parallel at intervals. The end plate positioning mechanisms are symmetrically arranged at the two ends of the tray, each end plate positioning mechanism comprises an end plate positioning seat connected to the tray in a sliding mode, and an end plate positioning pin used for positioning an end plate is arranged on each end plate positioning seat; the partition plate positioning mechanism comprises an expansion pin fixedly located on the tray and a tensioning pin connected into the expansion pin in a sliding mode. The end plate positioning seat is provided with the end plate positioning pin used for positioning the end plate, and the end plate positioning pin is used for precisely positioning the end plate, so that the assembly precision of the end plate is improved; a tensioning pin and an expansion pin of the partition plate positioning mechanism are used for jointly positioning the partition plate, and then the positioning precision of mounting holes in the partition plate is improved.

Description

Technical Field

[0001] This application relates to the technical field of battery manufacturing, and particularly relates to a battery module stacking device. Background Art

[0002] The production and assembly process of battery modules includes the assembly and welding of battery cells, end plates, and side plates. Only when the end plates are accurately positioned can the unevenness of the battery cells be avoided, which is convenient for subsequent processing or transportation and ensures the quality of battery products. Currently, during the module stacking process, the positioning of the end plates is generally completed by selecting three surfaces on the end plates. The three-surface positioning will cause the accumulation of tolerance size chains between the end plate surface and the holes, resulting in an increase in the tolerance control accuracy of the mounting holes and positioning surfaces on the end plates, thereby increasing the manufacturing difficulty and cost. Summary of the Invention

[0003] Embodiments of this application provide a battery module stacking device to solve the problems in the related art, such as poor assembly positioning accuracy of battery modules, poor position accuracy of mounting holes after battery modules are stacked, and inability to assemble.

[0004] Embodiments of this application provide a battery module stacking device, including:

[0005] A battery tray base, which includes a substrate and trays that are parallel and spaced apart and fixed to the top of the substrate;

[0006] An end plate positioning mechanism, which is symmetrically arranged at both ends of the tray. The end plate positioning mechanism includes an end plate positioning seat slidably connected to the tray, and an end plate positioning pin for positioning the end plate is provided on the end plate positioning seat;

[0007] A separator positioning mechanism, which includes a tensioning pin located in the middle of the tray. An expansion pin fixed to the tray is sleeved outside the tensioning pin, and the tensioning pin slides within the expansion pin.

[0008] In some embodiments: An end plate pressing block is connected to the end plate positioning seat. An end plate pressing mechanism for pressing the end plate onto the end plate positioning seat is provided at the top of the end plate pressing block. First welding copper nozzles are also provided at both ends of the end plate pressing block on the end plate positioning seat.

[0009] In some embodiments: An end plate driving mechanism for driving the end plate positioning seat to move linearly on the tray is provided between the substrate and the tray. The end plate driving mechanism includes a first bearing seat fixed to the top of the substrate and a second bearing seat fixed to the bottom of the tray;

[0010] A lead screw is rotatably connected to the first bearing seat and the second bearing seat. A nut threadedly connected to the lead screw is connected to the end plate positioning seat. One end of the lead screw is connected to a handwheel, and a locking block for locking the lead screw is connected to the first bearing seat.

[0011] In some embodiments: The tension pin vertically penetrates through the upper and lower surfaces of the tray. The tension pin includes an equal-diameter section and a tension section that are coaxially connected to each other. The diameter of the tension section gradually increases in a direction away from the equal-diameter section.

[0012] In some embodiments: The expansion pin includes a partition support block fixedly connected to the top of the tray. A through hole for penetrating the tension pin is formed in the partition support block. A plurality of expansion pieces surrounding the tension pin are connected to the top of the partition support block.

[0013] In some embodiments: At least two groups of tension pins are provided. A fixing plate for connecting each tension pin is provided at the bottom of the tray. A lifting mechanism for driving the tension pin to lift and slide within the expansion pin is connected to the fixing plate.

[0014] In some embodiments: A side plate positioning mechanism is further included. The side plate positioning mechanisms are symmetrically arranged on both sides of the tray. The side plate positioning mechanism includes a side plate positioning seat slidably connected to the top of the substrate. Side plate pressing mechanisms for pressing the side plate against the end plate are provided at both ends of the side plate positioning seat.

[0015] In some embodiments: The side plate positioning seat includes a lower sliding plate arranged horizontally and slidably connected to the substrate through a slide rail, and an upper pressing plate vertically fixed to the top of the lower sliding plate. A second welding copper nozzle is connected to the middle of the upper pressing plate.

[0016] In some embodiments: Avoidance holes are formed at both ends of the upper pressing plate. The side plate pressing mechanism includes a reaction force bracket fixed to the lower sliding plate and the upper pressing plate. A pressing block located within the avoidance hole is slidably connected to the reaction force bracket.

[0017] A screw rod rotatably connected to the pressing block is further provided on the reaction force bracket. The screw rod is threadedly connected to the reaction force bracket. A knob is connected to one end of the screw rod. A locking block for locking the screw rod is connected to the reaction force bracket.

[0018] In some embodiments: A side plate pressing mechanism for driving the side plate positioning seat to linearly move on the substrate is provided between the substrate and the tray. The side plate pressing mechanism includes a first bearing seat fixed to the top of the substrate and a second bearing seat fixed to the bottom of the tray.

[0019] A lead screw is rotatably connected to the first bearing seat and the second bearing seat. A nut threadedly connected to the lead screw is connected to the side plate positioning seat. A hand wheel is connected to one end of the lead screw. A locking block for locking the lead screw is connected to the first bearing seat.

[0020] The beneficial effects brought by the technical solution provided in this application include:

[0021] An embodiment of this application provides a battery module stacking device. Since the battery module stacking device of this application is provided with a battery tray base, the battery tray base includes a substrate, and trays that are parallel and spaced apart and fixed to the top of the substrate; end plate positioning mechanisms, which are symmetrically arranged at both ends of the tray. The end plate positioning mechanism includes an end plate positioning seat slidably connected to the tray, and an end plate positioning pin for positioning the end plate is provided on the end plate positioning seat; a partition positioning mechanism, which includes a tensioning pin located in the middle of the tray, and an expansion pin fixed to the tray is sleeved outside the tensioning pin, and the tensioning pin slides within the expansion pin.

[0022] Therefore, the battery module stacking device of this application is provided with end plate positioning mechanisms for positioning end plates at both ends of the tray. The end plate positioning seat of the end plate positioning mechanism is slidably connected to the tray, and an end plate positioning pin for positioning the end plate is provided on the end plate positioning seat. The end plate positioning pin is used to accurately position the end plate, improve the assembly accuracy of the end plate, and further improve the positioning accuracy of the mounting holes on the end plate. A partition positioning mechanism is provided in the middle of the tray. The tensioning pin and the expansion pin of the partition positioning mechanism are used to jointly position the partition. The tensioning pin and the expansion pin are located in the mounting holes of the partition. When the tensioning pin causes the expansion pin to expand, the expansion pin accurately positions the partition, improves the assembly accuracy of the partition, and further improves the positioning accuracy of the mounting holes on the partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a three-dimensional structure diagram for positioning the battery module in the embodiment of this application;

[0025] Figure 2 It is a top view of the structure for positioning the battery module in the embodiment of this application;

[0026] Figure 3 It is a three-dimensional structure diagram for positioning the end plate, partition and side plate in the embodiment of this application;

[0027] Figure 4 It is a three-dimensional structure diagram of the embodiment of this application;

[0028] Figure 5 It is a three-dimensional structure diagram of the battery tray base and the partition positioning mechanism in the embodiment of this application;

[0029] Figure 6A three-dimensional structure diagram of the end plate positioning mechanism according to an embodiment of the present application;

[0030] Figure 7 A three-dimensional structure diagram of the tension pin and expansion pin according to an embodiment of the present application;

[0031] Figure 8 A three-dimensional structure diagram of the side plate positioning mechanism according to an embodiment of the present application;

[0032] Figure 9 A three-dimensional structure diagram of the end plate driving mechanism according to an embodiment of the present application;

[0033] Figure 10 A three-dimensional structure diagram of the battery module according to an embodiment of the present application.

[0034] Reference numerals:

[0035] 100, carrier; 110, battery tray base; 111, substrate; 112, tray; 113, support seat; 120, end plate positioning mechanism; 121, end plate positioning seat; 122, end plate positioning pin; 123, end plate extrusion block; 124, end plate pressing mechanism; 125, first welding copper nozzle; 126, nut;

[0036] 130, partition positioning mechanism; 131, tension pin; 132, expansion pin; 133, fixing plate; 134, lifting mechanism; 135, equal-diameter section; 136, tension section; 137, partition support block; 138, expansion piece; 140, side plate positioning mechanism; 141, lower sliding plate; 142, upper pressing plate; 143, second welding copper nozzle; 144, reaction support; 145, pressing block; 146, screw; 147, knob; 148, locking block;

[0037] 150, end plate driving mechanism; 151, first bearing seat; 152, second bearing seat; 153, lead screw; 154, hand wheel; 160, side plate pressing mechanism; 200, battery module; 210, end plate; 220, partition; 230, side plate; 240, battery. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0039] The embodiment of the present application provides a battery module stacking device, which can solve the problems in the related art that the assembly positioning accuracy of the battery module is poor, and after the battery modules are stacked, the position degree of the mounting holes is poor and they cannot be assembled.

[0040] See Figures 1 to 6 and Figure 10 As shown in

[0041] The battery tray base 110, the battery tray base 110 includes a substrate 111, and trays 112 that are parallel and spaced and fixed to the top of the substrate 111. A plurality of support seats 113 for supporting the tray 112 to a set height on the top of the substrate 111 are fixedly provided on the substrate 111. The tray 112 is used to support the battery module 200 and provide an operation platform for the assembly of the battery module 200.

[0042] The battery module 200 includes batteries 240, a partition 220 for separating adjacent two groups of batteries 240 is provided between adjacent groups of batteries 240, two side plates 230 are respectively provided on both sides of the battery 240, and end plates 210 are connected to both ends of the side plates 230. Both ends of the end plate 210 and the partition 220 are welded to the side plates 230, and mounting holes are opened on both the end plate 210 and the partition 220.

[0043] The end plate positioning mechanism 120, the end plate positioning mechanism 120 is symmetrically arranged at both ends of the tray 112. The end plate positioning mechanism 120 includes an end plate positioning seat 121 slidably connected to the tray 112, and an end plate positioning pin 122 for positioning the end plate 210 is provided on the end plate positioning seat 121. There are two end plate positioning pins 122, and the two end plate positioning pins 122 are vertically connected to both ends of the end plate positioning seat 121.

[0044] The end plate positioning seat 121 is slidably connected to the tray 112. Then, after the end plate 210 is positioned and connected to the end plate positioning seat 121 through the two end plate positioning pins 122, the end plate positioning seat 121 drives the end plate 210 to move in the direction close to the battery 240 and tightly adhere to the side wall of the battery 240. The end plate positioning pin 122 is precisely matched with the mounting hole of the end plate 210, so that the mounting hole of the end plate 210 will not be inclined or misaligned after the end plate 210 is welded to the side plate 230.

[0045] The partition positioning mechanism 130, the partition positioning mechanism 130 includes a tensioning pin 131 located in the middle of the tray 112, an expansion pin 132 fixed to the tray 112 is sleeved outside the tensioning pin 131, and the tensioning pin 131 slides in the expansion pin 132. The tensioning pin 131 and the expansion pin 132 are used to precisely position the partition 220, and the partition 220 is positioned on the tensioning pin 131 and the expansion pin 132 through the mounting hole.

[0046] When positioning the partition plate 220, first position the partition plate 220 on the tension pin 131 and the expansion pin 132 through the mounting holes. Then, the tension pin 131 slides downward within the expansion pin 132, causing the expansion pin 132 to expand and tightly fit with the mounting holes of the partition plate 220, preventing the position of the partition plate 220 from changing when the end of the partition plate 220 is welded to the side plate 230, and improving the position accuracy of the mounting holes on the partition plate 220.

[0047] In the battery module stacking device 100 according to the embodiment of the present application, end plate positioning mechanisms 120 for positioning the end plates 210 are provided at both ends of the tray 112. The end plate positioning seats 121 of the end plate positioning mechanisms 120 are slidably connected to the tray 112, and end plate positioning pins 122 for positioning the end plates 210 are provided on the end plate positioning seats 121. The end plate positioning pins 122 are used to accurately position the end plates 210, improve the assembly accuracy of the end plates 210, and further improve the positioning accuracy of the mounting holes on the end plates 210.

[0048] A partition plate positioning mechanism 130 is provided in the middle of the tray 112. The tension pin 131 and the expansion pin 132 of the partition plate positioning mechanism 130 are used to jointly position the partition plate 220. The tension pin 131 and the expansion pin 132 are located within the mounting holes of the partition plate 220. When the tension pin 131 causes the expansion pin 132 to expand, the expansion pin 132 accurately positions the partition plate 220, improves the assembly accuracy of the partition plate 220, and further improves the positioning accuracy of the mounting holes on the partition plate 220.

[0049] In some alternative embodiments: Refer to Figures 1 to 6 As shown, the embodiment of the present application provides a battery module stacking device. An end plate pressing block 123 is connected to the end plate positioning seat 121 of the carrier 100. An end plate pressing mechanism 124 for pressing the end plate 210 onto the end plate positioning seat 121 is provided at the top of the end plate pressing block 123. First welding copper nozzles 125 located at both ends of the end plate pressing block 123 are also provided on the end plate positioning seat 121.

[0050] In the embodiment of the present application, an end plate pressing block 123 is connected to the end plate positioning seat 121. The end plate pressing block 123 is used to press the large surface of the end plate 210, causing the end plate 210 to be pressed against the side wall of the battery 240. There are two end plate pressing mechanisms 124 on the end plate pressing block 123, and the two end plate pressing mechanisms 124 are used to vertically press the end plate 210 onto the end plate positioning seat 121.

[0051] First welding copper nozzles 125 located at both ends of the end plate pressing block 123 are also provided on the end plate positioning seat 121. The first welding copper nozzles 125 are used to provide a shielding gas for the laser welding head when laser welding the end of the side plate 230 and the end of the end plate 210, and collect the welding slag generated by the laser welding head during welding.

[0052] In some alternative embodiments: Refer to Figures 1 to 6 and Figure 9 As shown, an embodiment of the present application provides a battery module stacking device. There is an end plate driving mechanism 150 between the substrate 111 and the tray 112 of the vehicle 100 to drive the end plate positioning seat 121 to move linearly on the tray 112. The end plate driving mechanism 150 includes a first bearing seat 151 fixed to the top of the substrate 111 and a second bearing seat 152 fixed to the bottom of the tray 112.

[0053] A lead screw 153 is rotatably connected between the first bearing seat 151 and the second bearing seat 152, and a nut 126 threadedly connected to the lead screw 153 is connected to the end plate positioning seat 121. A handwheel 154 is connected to one end of the lead screw 153, and a locking block 148 for locking the lead screw 153 is connected to the first bearing seat 151. The lead screw 153 can rotate flexibly in both forward and reverse directions between the first bearing seat 151 and the second bearing seat 152.

[0054] When it is necessary to move the end plate positioning seat 121 on the tray 112 in the direction approaching the battery module 200, manually drive the handwheel 154 to drive the lead screw 153 to rotate clockwise. The lead screw 153 is threadedly connected to the nut 126 connected to the end plate positioning seat 121, and then the rotational motion of the lead screw 153 is converted into a linear motion of the end plate positioning seat 121 approaching the battery module 200.

[0055] When it is necessary to move the end plate positioning seat 121 on the tray 112 in the direction away from the battery module 200, manually drive the handwheel 154 to drive the lead screw 153 to rotate counterclockwise. The lead screw 153 is threadedly connected to the nut 126 connected to the end plate positioning seat 121, and then the rotational motion of the lead screw 153 is converted into a linear motion of the end plate positioning seat 121 away from the battery module 200.

[0056] A locking block 148 for unlocking or locking the lead screw 153 is connected to the first bearing seat 151. When it is necessary to rotate the lead screw 153, open the locking block 148 to unlock the lead screw 153. After the lead screw 153 moves the end plate positioning seat 121 to the set position, close the locking block 148 to lock the lead screw 153 and prevent the lead screw 153 from rotating.

[0057] In some alternative embodiments: Refer to Figure 5 and Figure 7 As shown, an embodiment of the present application provides a battery module stacking device. The tension pin 131 of the vehicle 100 vertically penetrates the upper and lower surfaces of the tray 112. The tension pin 131 includes an equal-diameter section 135 and a tension section 136 connected coaxially with each other. The tension section 136 is located at the top of the equal-diameter section 135 and the diameter gradually increases in the direction away from the equal-diameter section 135.

[0058] The expansion pin 132 includes a partition support block 137 fixedly connected to the top of the tray 112. The partition support block 137 is not only used to position and support the partition 220, but also has a through hole for inserting the tension pin 131. A plurality of expansion pieces 138 surrounding the tension pin 131 are connected to the top of the partition support block 137.

[0059] After the partition 220 is positioned on the tension pin 131 and the expansion pin 132 through the mounting hole, the tension pin 131 slides downward within the expansion pin 132, and the tension section 136 of the tension pin 131 gradually enters into the plurality of expansion pieces 138 of the expansion pin 132, thereby gradually expanding the plurality of expansion pieces 138. After the plurality of expansion pieces 138 expand, they are in close fit with the mounting hole of the partition 220, preventing displacement changes when the partition 220 is welded to the side plate 230, and thus improving the positioning accuracy of the mounting hole of the partition 220.

[0060] After the partition 220 is welded to the side plate 230, the tension pin 131 slides upward within the expansion pin 132, and the tension section 136 of the tension pin 131 gradually extends out of the plurality of expansion pieces 138 of the expansion pin 132. Then, the plurality of expansion pieces 138 start to contract. After the plurality of expansion pieces 138 contract, they are in clearance fit with the mounting hole of the partition 220. At this time, it is convenient for the battery module 200 to be detached from the carrier 100.

[0061] In some alternative embodiments: Refer to Figure 5 and Figure 7 As shown, the embodiment of the present application provides a battery module stacking device. The carrier 100 is provided with at least two groups of tension pins 131. A fixing plate 133 connecting each tension pin 131 is provided at the bottom of the tray 112, and a lifting mechanism 134 for driving the tension pin 131 to lift and slide within the expansion pin is connected to the fixing plate 133.

[0062] The lifting mechanism 134 is preferably but not limited to a cylinder or a linear motor. The lifting mechanism 134 can drive the tension pin 131 to reciprocate up and down within the expansion pin 132 through the fixing plate 133, thereby realizing the automatic positioning and detachment actions of the partition 220, and improving the assembly efficiency and automation level of the battery module 200.

[0063] In some alternative embodiments: Refer to Figures 1 to 5 and Figure 8 As shown, the embodiment of the present application provides a battery module stacking device. The carrier 100 further includes a side plate positioning mechanism 140. The side plate positioning mechanisms 140 are symmetrically arranged on both sides of the tray 112. The side plate positioning mechanism 140 includes a side plate positioning seat slidably connected to the top of the base plate 111, and side plate pressing mechanisms for pressing the side plate 230 against the end plate 210 are provided at both ends of the side plate positioning seat.

[0064] Specifically, the side plate positioning seat includes a lower slide plate 141 which is horizontally arranged and slidably connected to the substrate 111 through a slide rail, and an upper pressure plate 142 vertically fixed on the top of the lower slide plate 141. The lower slide plate 141 is used to drive the upper pressure plate 142 to provide pressure to the side plate 230, and then press the side plate 230 against the end of the partition plate 220 and shape the side plate 230.

[0065] The side plate pressing mechanism is used to press the end of the side plate 230 against the end of the end plate 210, facilitating welding after the side plate 230 and the end plate 210 are mutually attached. A second welding copper nozzle 143 is connected to the middle of the upper pressure plate 142. The second welding copper nozzle 143 is used to provide protective gas for the laser welding head when the middle of the side plate 230 is laser welded to the end of the partition plate 220, and collect the welding slag generated during welding by the laser welding head.

[0066] In some alternative embodiments: Refer to Figures 1 to 5 and Figure 8 As shown, the embodiment of the present application provides a battery module stacking device. Avoidance holes are provided at both ends of the upper pressure plate 142 of the carrier 100. The side plate pressing mechanism includes a reaction force bracket 144 fixed on the lower slide plate 141 and the upper pressure plate 142. A pressing block 145 located in the avoidance hole is slidably connected to the reaction force bracket 144.

[0067] A screw rod 146 rotatably connected to the pressing block 145 is further provided on the reaction force bracket 144. The screw rod 146 is threadedly connected to the reaction force bracket 144. One end of the screw rod 146 is connected with a knob 147, and a locking block 148 for locking the screw rod 146 is connected to the reaction force bracket 144. The knob 147 is used to rotate the screw rod 146 manually, and then move the pressing block 145 towards or away from the side plate 230.

[0068] In some alternative embodiments: Refer to Figures 1 to 5 and Figure 8 and Figure 9 As shown, the embodiment of the present application provides a battery module stacking device. A side plate pressing mechanism 160 for driving the side plate positioning seat to move linearly on the substrate 111 is provided between the substrate 111 and the tray 112 of the carrier 100. The side plate pressing mechanism 160 includes a first bearing seat 151 fixed on the top of the substrate 111, and a second bearing seat 152 fixed on the bottom of the tray 112.

[0069] A lead screw 153 is rotatably connected to the first bearing seat 151 and the second bearing seat 152. A nut 126 threadedly connected to the lead screw is connected to the side plate positioning seat. One end of the lead screw 153 is connected with a handwheel 154, and a locking block 148 for locking the lead screw 153 is connected to the first bearing seat 151. The lead screw 153 can rotate flexibly in the forward and reverse directions on the first bearing seat 151 and the second bearing seat 152.

[0070] When it is necessary to move the side plate positioning seat on the base plate 111 in the direction approaching the battery module 200, manually drive the handwheel 154 to drive the lead screw 153 to rotate clockwise. The lead screw 153 is threadedly connected to the nut 126 connected to the side plate positioning seat, and then the rotational motion of the lead screw 153 is converted into a linear motion of the side plate positioning seat towards the battery module 200.

[0071] When it is necessary to move the side plate positioning seat on the base plate 111 in the direction away from the battery module 200, manually drive the handwheel 154 to drive the lead screw 153 to rotate counterclockwise. The lead screw 153 is threadedly connected to the nut 126 connected to the side plate positioning seat, and then the rotational motion of the lead screw 153 is converted into a linear motion of the side plate positioning seat away from the battery module 200.

[0072] Working principle

[0073] The embodiment of the present application provides a battery module stacking device. Since the battery module stacking device 100 of the present application is provided with a battery tray base 110, the battery tray base 110 includes a base plate 111 and trays 112 fixedly arranged parallel and spaced apart on the top of the base plate 111; end plate positioning mechanisms 120, with end plate positioning mechanisms 120 symmetrically arranged at both ends of the tray 112. The end plate positioning mechanisms 120 include end plate positioning seats 121 slidably connected to the tray 112, and end plate positioning pins 122 for positioning the end plate 210 are provided on the end plate positioning seats 121; partition plate positioning mechanisms 130, the partition plate positioning mechanisms 130 include tension pins 131 located in the middle of the tray 112, and expansion pins 132 fixed on the tray 112 are sleeved outside the tension pins 131, and the tension pins 131 can slide within the expansion pins 132.

[0074] Therefore, the battery module stacking device 100 of the present application is provided with end plate positioning mechanisms 120 for positioning the end plate 210 at both ends of the tray 112. The end plate positioning seats 121 of the end plate positioning mechanisms 120 are slidably connected to the tray 112, and end plate positioning pins 122 for positioning the end plate 210 are provided on the end plate positioning seats 121. The end plate positioning pins 122 are used to accurately position the end plate 210, improve the assembly accuracy of the end plate 210, and further improve the positioning accuracy of the mounting holes on the end plate 210. A partition plate positioning mechanism 130 is provided in the middle of the tray 112. The tension pins 131 and expansion pins 132 of the partition plate positioning mechanism 130 are used to jointly position the partition plate 220. The tension pins 131 and expansion pins 132 are located in the mounting holes of the partition plate 220. When the tension pins 131 cause the expansion pins 132 to expand, the expansion pins 132 accurately position the partition plate 220, improve the assembly accuracy of the partition plate 220, and further improve the positioning accuracy of the mounting holes on the partition plate 220.

[0075] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0076] It should be noted that in the present application, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0077] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A battery module stacking device, characterized in that: include: A battery tray base (110), the battery tray base (110) comprising a base plate (111), and a tray (112) fixed parallel to and spaced apart from the top of the base plate (111); An end plate positioning mechanism (120), wherein the end plate positioning mechanism (120) is symmetrically arranged at both ends of the tray (112), and comprises an end plate positioning seat (121) slidably connected to the tray (112), and the end plate positioning seat (121) is provided with an end plate positioning pin (122) for positioning the end plate (210); A partition plate positioning mechanism (130) includes an expansion pin (132) fixed to the tray (112), and a tension pin (131) slidably connected to the expansion pin (132).

2. The battery module stacking device according to claim 1, characterized in that: The end plate positioning seat (121) is connected to an end plate extrusion block (123); the top of the end plate extrusion block (123) is provided with an end plate pressing mechanism (124) for pressing the end plate (210) onto the end plate positioning seat (121); the end plate positioning seat (121) is also provided with a first welding copper nozzle (125) located at both ends of the end plate extrusion block (123).

3. The battery module stacking device according to claim 2, characterized in that: An end plate driving mechanism (150) for driving the end plate positioning seat (121) to move linearly on the tray (112) is provided between the base plate (111) and the tray (112), and the end plate driving mechanism (150) comprises a first bearing seat (151) fixed on the top of the base plate (111), and a second bearing seat (152) fixed on the bottom of the tray (112); A screw rod (153) is rotatably connected to the first bearing seat (151) and the second bearing seat (152); a nut (126) threadedly connected to the screw rod (153) is connected to the end plate positioning seat (121); a hand wheel (154) is connected to one end of the screw rod (153); and a locking block (148) for locking the screw rod (153) is connected to the first bearing seat (151).

4. The battery module stacking device according to claim 1, wherein: The tensioning pin (131) vertically penetrates the upper and lower surfaces of the tray (112), and the tensioning pin (131) comprises an equal-diameter section (135) and a tensioning section (136) coaxially connected to each other, and the diameter of the tensioning section (136) gradually increases in a direction away from the equal-diameter section (135).

5. The battery module stacking device according to claim 1 or 4, characterized in that: The expansion pin (132) includes a partition support block (137) fixedly connected to the top of the tray (112), the partition support block (137) is provided with a through hole for inserting the tensioning pin (131), and the top of the partition support block (137) is connected to a plurality of expansion plates (138) arranged around the tensioning pin (131).

6. The battery module stacking device according to claim 4, characterized in that: At least two groups of the tensioning pins (131) are provided, and a fixing plate (133) connected to each of the tensioning pins (131) is provided at the bottom of the tray (112), and a lifting mechanism (134) is connected to the fixing plate (133) for driving the tensioning pins (131) to rise and fall and slide in the expansion pins (132).

7. The battery module stacking device according to claim 1, characterized in that: It also includes a side panel positioning mechanism (140), the side panel positioning mechanism (140) is symmetrically arranged on both sides of the tray (112), the side panel positioning mechanism (140) includes a side panel positioning seat slidably connected to the top of the base plate (111), and the two ends of the side panel positioning seat are provided with a side panel pressing mechanism for pressing the side panel (230) onto the end plate (210).

8. The battery module stacking device according to claim 7, characterized in that: The side plate positioning seat comprises a lower slide plate (141) which is horizontally arranged and slidably connected to the base plate (111) via a slide rail, and an upper pressing plate (142) which is vertically fixed on the top of the lower slide plate (141), and a second welding copper nozzle (143) is connected to the middle of the upper pressing plate (142).

9. The battery module stacking device according to claim 8, characterized in that: Both ends of the upper pressing plate (142) are provided with avoidance holes, and the side plate clamping mechanism comprises a reaction force bracket (144) fixed on the lower sliding plate (141) and the upper pressing plate (142), and a top pressure block (145) located in the avoidance hole is slidably connected to the reaction force bracket (144); The reaction support (144) is also provided with a screw rod (146) rotatably connected to the top pressure block (145); the screw rod (146) is threadedly connected to the reaction support (144); one end of the screw rod (146) is connected to a knob (147); and the reaction support (144) is connected to a locking block (148) for locking the screw rod (146).

10. The battery module stacking device according to claim 7, wherein: A side plate clamping mechanism (160) is provided between the base plate (111) and the tray (112) for driving the side plate positioning seat to move linearly on the base plate (111), and the side plate clamping mechanism (160) comprises a first bearing seat (151) fixed to the top of the base plate (111), and a second bearing seat (152) fixed to the bottom of the tray (112); A screw rod (153) is rotatably connected to the first bearing seat (151) and the second bearing seat (152); a nut (126) threadedly connected to the screw rod (153) is connected to the side plate positioning seat; one end of the screw rod (153) is connected to a hand wheel (154); and a locking block (148) for locking the screw rod (153) is connected to the first bearing seat (151).

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