A battery module assembly

Abstract

The utility model discloses a kind of battery module group forming devices, including fixed assembly, compression assembly, auxiliary installation assembly and top regular board;Compression assembly includes the gasket of a plurality of dismounting connection and movable insulating plate, the step of going down protruding is set to movable insulating plate's both sides;The step of both sides supports movable insulating plate, so that its bottom does not contact the arc plate in battery cell limiting assembly;Top regular board can be installed to battery cell and liquid cooling plate above and with both shape corresponding.This application fixes the position of battery cell and liquid cooling plate by fixed assembly, battery cell and liquid cooling plate are compressed by compression assembly, movable insulating plate is extruded to liquid cooling plate under the drive of first drive assembly, and the step of going down protruding is set to movable insulating plate's both sides, the step of both sides supports movable insulating plate, so that its bottom does not contact the arc plate in battery cell limiting assembly, to prevent affecting the normal movement of movable insulating plate, to ensure the accuracy when movable insulating plate is compressed to liquid cooling plate.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, specifically to a battery module assembly device. Background Technology

[0002] With the widespread use of internal combustion engine vehicles, air pollution and petroleum resource shortages have become increasingly serious problems. New energy vehicles, as an important means of energy conservation and emission reduction, have received widespread attention. Currently, new energy vehicles generally use lithium-ion batteries as their power batteries. As lithium batteries are increasingly used in daily life and production, the types of lithium battery cells and assembly methods also vary.

[0003] Before being assembled, the battery pack consists of multiple cells, which can be either square or cylindrical.

[0004] However, previously, cylindrical battery cells were manufactured using an integral liquid cooling plate, such as CN106207042A, a battery module. This module includes multiple cylindrical battery cells arranged side-by-side, multiple heat pipes inserted between the cells, a liquid cooling plate, and a mounting bracket for housing and fixing the cylindrical cells and heat pipes. The cooling ends of the heat pipes are connected to the liquid cooling plate. The liquid cooling plate covers the top surface of the mounting bracket, forming a closed space housing the cylindrical cells and heat pipes. The space within the mounting bracket housing the heat pipes is filled with thermally conductive adhesive, and the heat pipes are tubular structures. Because the integral liquid cooling plate has fixed dimensions, the resulting product is prone to problems such as large dimensional errors, cell misalignment, poor contact with the liquid cooling plate, and poor heat exchange. Utility Model Content

[0005] The technical problem to be solved by this utility model is: how to solve the problem of inaccurate contact between the battery cell and the liquid cooling plate during battery module assembly.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A battery module assembly device includes a fixing component, a clamping component, an auxiliary mounting component, and a top leveling plate; The fixing assembly includes a base plate and a cell limiting assembly and a liquid cooling plate limiting assembly mounted on the base plate. The cell limiting assembly is provided with a cell positioning groove, and the liquid cooling plate fixing assembly is located on both sides of the cell limiting assembly. The clamping assembly includes a first drive assembly, and a plurality of detachable pads and movable insulating plates connected in sequence to the movable end of the first drive assembly. The movable insulating plates are provided with downward protruding steps on both sides; the steps on both sides support the movable insulating plates so that their bottom does not contact the arc plate inside the cell limiting assembly. The auxiliary installation component includes an auxiliary installation bracket assembly, a second drive assembly, and a pressure head. The auxiliary installation bracket assembly is mounted above the liquid cooling plate limiting assembly. The second drive assembly is slidably connected to the auxiliary installation bracket assembly. The movable end of the second drive assembly is connected to the pressure head. The pressure head, together with the stop plate inside the liquid cooling plate limiting assembly, can support the liquid cooling plate. The top alignment plate can be installed above the battery cell and liquid cooling plate and corresponds to their shape.

[0007] This application uses a fixing component to fix the position of the battery cell and liquid cooling plate, and a pressing component to press the battery cell and liquid cooling plate together. The movable insulating plate is pressed against the liquid cooling plate under the drive of the first driving component. The movable insulating plate has downward protruding steps on both sides, which support the movable insulating plate and prevent its bottom from contacting the arc plate inside the battery cell limiting component. This prevents the normal movement of the movable insulating plate from being affected, thus ensuring the accuracy of the movable insulating plate when pressing the liquid cooling plate. It also allows the size error of the assembled battery to be effectively controlled and the battery cell position to be accurate. The second driving component and the pressure head can further fix the position of the battery cell and liquid cooling plate.

[0008] As a further embodiment of this utility model: the battery cell limiting assembly includes an insulating base plate, a fixed insulating plate, and an end support frame; An insulating base plate is installed on the base plate, and several rows of arc-shaped plates are installed on the upper surface of the insulating base plate. Each row of arc-shaped plates forms a wave shape, and adjacent rows of arc-shaped plates can form a space suitable for the arrangement of cylindrical cells. The end support frame is connected to the base plate and located at the end of the insulating base plate. The fixed insulating plate is installed on the end support frame and connected to the top surface of the insulating base plate.

[0009] As a further embodiment of this utility model: the liquid cooling plate limiting assembly includes a limiting plate, a stop plate, and a height limiting strip; The limiting plate is connected to the base plate. The limiting plates on both sides of the cell limiting assembly are arranged in parallel. Multiple first limiting grooves are opened in parallel along the length of the limiting plate. The bottom of the stop plate is inserted into the first limiting groove. The height limiting strip is located between the limiting plate and the cell limiting assembly. The upper surface of the height limiting strip supports the liquid cooling plate upward and limits it in the Z direction.

[0010] As a further embodiment of this utility model: the first drive assembly includes a first support frame, a first lead screw nut, a first lead screw, a lead screw connecting block, a second support frame, and a first guide assembly; The first support frame is mounted on the base plate, the first lead screw nut is embedded in the first support frame, the first lead screw is connected to the first lead screw nut, the end of the first lead screw is rotatably connected to the lead screw connecting block, the lead screw connecting block is connected to the second support frame, the first guide assembly is connected to the base plate, and the bottom of the second support frame is connected to the first guide assembly.

[0011] As a further embodiment of this utility model: the first guide component includes a first slider and a guide rail. The two guide rails are symmetrically arranged along the vertical plane of the first support frame. The guide rails are fixedly connected to the base plate. Each side of the guide rail is equipped with two first sliders. The first support frame has a rectangular frame structure. The two first sliders are respectively connected to the two sides of one end of the first support frame.

[0012] As a further embodiment of this utility model: the auxiliary installation component further includes a pin, the auxiliary installation frame component includes a mounting frame body and a track mounting plate, two mounting frame bodies are symmetrically connected to the base plate at intervals, the two ends of the track mounting plate are connected to the mounting frame body, the track mounting plate has a vertical through pin hole along its length, and the pin is movably connected to the pin hole.

[0013] As a further embodiment of this utility model: the second drive assembly includes a linear guide assembly, a slider connecting plate, a lead screw connecting plate, a second lead screw, and a second lead screw nut; The linear guide assembly is installed at the bottom of the track mounting plate. The top surface of the slider connecting plate is connected to the linear guide assembly. The lead screw connecting plate is connected to the bottom of the slider connecting plate. The second lead screw nut is connected to the lead screw connecting plate. The second lead screw is connected to the second lead screw nut. The end of the second lead screw is rotatably connected to the pressure head connecting block. The pressure head connecting block is connected to the pressure head.

[0014] As a further embodiment of this utility model: the second drive assembly further includes a second guide assembly; the second guide assembly includes multiple guide rods and multiple linear bearings, the multiple linear bearings are axially embedded in the lead screw connecting plate, one end of the guide rod is fixedly connected to the pressure head, and the other end is slidably connected to the linear bearing.

[0015] As a further embodiment of this utility model: the pressure head connecting block is connected to three pressure head clamping blocks (upper, middle, and lower) on the side opposite to the bearing, and two pressure head positioning pins are connected in the middle of the three pressure head clamping blocks. The pressure head is arranged parallel to the lead screw connecting plate.

[0016] As a further embodiment of this utility model: the side of the movable insulating plate near the liquid cooling plate is wavy, and the liquid cooling plate is also wavy.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This invention uses a fixing component to fix the position of the battery cell and the liquid cooling plate, and a pressing component to press the battery cell and the liquid cooling plate together. The movable insulating plate is driven by the first driving component to press the liquid cooling plate. The movable insulating plate has downward protruding steps on both sides, which support the movable insulating plate and prevent its bottom from contacting the arc plate inside the battery cell limiting component. This prevents the normal movement of the movable insulating plate from being affected, thus ensuring the accuracy of the movable insulating plate when pressing the liquid cooling plate. It also allows for effective control of the size error of the assembled battery and accurate positioning of the battery cell. The second driving component and the pressing head can further fix the position of the battery cell and the liquid cooling plate. 2. The device of the present invention simultaneously completes the positioning and extrusion between the liquid cooling plate and the cylindrical battery cell. During the extrusion process, it can realize the assembly of a single row of corrugated liquid cooling plates and their pipe joints, avoiding multiple operations in the grouping process. Furthermore, the sequential extrusion of the liquid cooling plate and the cylindrical battery makes the connection between the two reliable and the heat dissipation effect better. 3. The arc-shaped plate of the present invention forms a limiting groove for the cylindrical battery cell, which can better limit the cylindrical battery cell. At the same time, the top surface of the arc-shaped plate forms a supporting surface for the liquid cooling plate, so that the final cylindrical battery has good contact with the liquid cooling plate, resulting in high overall space utilization and high battery density. 4. The number of first limiting grooves on the limiting plate of the present invention is the same as the number of liquid cooling plates, and their positions correspond. After the stop plate is inserted into the first limiting groove, it can position the liquid cooling plate in the X and Y directions, providing a positioning basis for the subsequent extrusion of pipe joints. The present invention sets a height limiting strip, and provides upward support for the non-pipe joint extrusion end of the liquid cooling plate on the upper surface of the height limiting strip, and performs Z-direction limiting. 5. This invention achieves extrusion through a combination of a lead screw and nut, providing uniform and reliable driving force and enabling self-locking; the first guide assembly and the second guide assembly ensure the stability of the driving force direction and provide support. 6. In this invention, the liquid cooling plate is wavy, which can increase the contact area with the cylindrical battery cell and improve the heat dissipation effect; the movable insulating plate is wavy, which can fit better with the liquid cooling plate and improve the assembly accuracy. 7. In the final assembly of the module, the present invention adds a top leveling plate that is placed on top of the battery cell and the liquid cooling plate. The surface of the top leveling plate is aligned with the top position of the battery cell and the liquid cooling plate. The top leveling plate can further ensure the stability of the position of the battery cell and the liquid cooling plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the module assembly device according to an embodiment of the present invention; Figure 2 This is an exploded view of the modular assembly device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the planar structure of the fixing component according to an embodiment of the present invention; Figure 4This is a schematic diagram of the structure of the fixing component according to an embodiment of the present invention; Figure 5 This is a partially enlarged schematic diagram of the fixing component according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a cylindrical battery cell and a liquid cooling plate assembled according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the connection structure between the clamping component and the fixing component in an embodiment of the present invention; Figure 8 This is a schematic diagram of the connection planar structure between the clamping component and the fixing component according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the auxiliary installation component according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the planar structure of the auxiliary installation component according to an embodiment of the present invention; Figure 11 This is a partially enlarged schematic diagram of the auxiliary installation component according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the connection between the liquid cooling plate and the pipe joint in an embodiment of the present invention; Figure 13 This is a schematic diagram of the structure of the movable insulating plate according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the overall structure of the module assembly according to an embodiment of the present invention; Figure 15 yes Figure 14 A structural diagram from another perspective; Figure 16 This is a schematic diagram of the structure of the movable insulating plate according to an embodiment of the present invention; Explanation of reference numerals in the attached figures: 100. Fixing component; 101. Base plate; 102. Insulating base plate; 1021. Arc plate; 103. Fixing insulating plate; 104. Limiting plate; 1041. First limiting groove; 105. Stop plate; 106. End support frame; 107. Height limiting strip; 200. Clamping assembly; 201. First support frame; 202. First lead screw nut; 203. First lead screw; 204. Lead screw connecting block; 205. Second support frame; 206. First guide assembly; 2061. First slider; 2062. Guide rail; 207. Pad; 208. Movable insulating plate; 300. Auxiliary installation component; 301. Auxiliary mounting bracket assembly; 3011. Mounting bracket body; 3012. Rail mounting plate; 3013. Pin hole; 302. Linear rail assembly; 3021. Linear rail body; 3022. Second slider; 303. Pin; 304. Slider connecting plate; 305. Lead screw connecting plate; 306. Second lead screw; 307. Second lead screw nut; 308. Pressure head; 3081. Pressure head connecting block; 3082. Pressure head clamping block; 3083. Pressure head positioning pin; 309. Second guide assembly; 3091. Guide rod; 3092. Linear bearing; 400. Top panel; 500, cylindrical battery cell; 600, liquid cooling plate; 700, pipe fitting. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Example 1 Reference Figure 1 , Figure 3 , Figure 6 , Figure 12 and Figure 13 A battery module assembly device includes a fixing component 100, a clamping component 200, and an auxiliary mounting component 300; wherein the fixing component 100 is used to support and position cylindrical battery cells 500 (see reference). Figure 6 ), and for limiting the liquid cooling plate 600 (see reference) Figure 6 The clamping assembly 200 is connected to one end of the fixing assembly 100, and its end is movable. It is used to clamp the liquid cooling plate 600 and the cylindrical battery cell 500, so that the two fit tightly together. The auxiliary mounting assembly 300 is used for the connection between the liquid cooling plate 600 and the pipe connector 700 (see reference). Figure 12 and Figure 13 The auxiliary installation component 300 is connected to both sides of the fixing component 100, located on both sides of the cylindrical cell 500 assembly area, and above the limiting plate 104 of the fixing component 100 (see reference). Figure 3 Liquid cooling plates 600 and cylindrical cells 500 are arranged at intervals. The two ends of multiple liquid cooling plates 600 can be connected by pipe joints 700 and are provided with inlet and outlet ports for the circulation of coolant to cool the cylindrical cells 500.

[0021] like Figure 3 , Figure 4 , Figure 5 As shown, the fixing assembly 100 includes a base plate 101 and a cell limiting assembly and a liquid cooling plate limiting assembly connected to the base plate 101; The cell limiting assembly includes an insulating base plate 102, a fixed insulating plate 103, and an end support frame 106; The liquid cooling plate limiting assembly includes a limiting plate 104, a stop plate 105, and a height limiting strip 107; Reference Figure 5 The base plate 101 is a rectangular plate, and an insulating base plate 102 is connected to the base plate 101. Multiple arc-shaped plates 1021 are connected in the middle of the upper surface of the insulating base plate 102. Each row of arc-shaped plates 1021 can form a wave shape. Adjacent rows of arc-shaped plates 1021 can form a space that is suitable for the arrangement of cylindrical cells 500. The top surface of the arc-shaped plates 1021 is used to place the liquid cooling plate 600. An end support frame 106 is vertically installed at one end of the insulating base plate 102. The end support frame 106 is fixedly connected to the base plate 101 and abuts against the end of the insulating base plate 102. An insulating plate 103 is fixedly connected at the corner where the end support frame 106 and the insulating base plate 102 are connected. The fixed insulating plate 103 has a vertically placed concave plate structure. The fixed insulating plate 103 is connected to the end support frame 106 by bolts. There is a groove on one side of the fixed insulating plate 103 that is adapted to the arrangement of the liquid cooling plates 600. That is, one side of the fixed insulating plate 103 can be aligned with the wavy liquid cooling plates 600. The side of the fixed insulating plate 103 that is aligned with the liquid cooling plates 600 has a wavy structure corresponding to the liquid cooling plates. Since the outermost liquid cooling plate 600 does not need to be coated with glue, the wavy side of the fixed insulating plate 103 is an integral structure.

[0022] Reference Figure 5 and Figure 7 Limiting plates 104 are provided on both sides of the insulating base plate 102. The limiting plates 104 are connected to the base plate 101 by bolts. The limiting plates 104 on both sides are arranged in parallel. The length of the limiting plates 104 is adapted to the insulating base plate 102. The limiting plates 104 have horizontally penetrating first limiting grooves 1041. The first limiting grooves 1041 are horizontally arranged. Multiple first limiting grooves 1041 are evenly arranged along the length direction of the limiting plates 104. The limiting plates 104 have stop plates 105 (see reference) that can limit and support the liquid cooling plate 600 and are used for installing the pipe joint 700. Figure 13 and Figure 14 The bottom of the stop plate 105 is inserted into the first limiting groove 1041. The end of the stop plate 105 can abut against the end of the liquid cooling plate 600, and the side of the stop plate 105 can abut against the end of the pipe joint 700. The height limiting strip 107 is located between the limiting plate 104 and the insulating base plate 102, providing upward support to the non-pipe joint 700 extrusion end of the liquid cooling plate 600 and performing Z-direction limiting.

[0023] Reference Figure 5 The aforementioned arc-shaped plate 1021 forms a limiting groove for the cylindrical cell 500, which can better limit the cylindrical cell 500. At the same time, the top surface of the arc-shaped plate 1021 forms a supporting surface for the liquid cooling plate 600, so that the final cylindrical battery 4 has good contact with the liquid cooling plate 600, resulting in high overall space utilization and high battery density.

[0024] like Figure 6 As shown, cylindrical cells 500 are arranged in rows within the space formed by the arc plate 1021. Adjacent rows of cylindrical cells 500 are connected by liquid cooling plates 600. The liquid cooling plates 600 are wavy and can fit the cylindrical surface of the cylindrical cells 500. Adhesive is applied to the middle part of the liquid cooling plate 600 where it contacts the cylindrical cells 500. The parts where the cylindrical cells 500 and the liquid cooling plate 600 contact are bonded together by the adhesive. The topmost liquid cooling plate 600 is fitted and tightly connected to the fixed insulating plate 103. The outer side of the topmost liquid cooling plate 600 (the side not in contact with the cylindrical battery cell 500) is not coated with adhesive. The left end of the topmost liquid cooling plate 600 is limited by a stop plate 105. The number of first limiting grooves 1041 on the limiting plate 104 is the same as the number of liquid cooling plates 600, and their positions correspond. After the stop plate 105 is inserted into the first limiting groove 1041, it can position the liquid cooling plate 600 in the X and Y directions. The height limiting strip 107 provides upward support to the non-pipe joint 700 extrusion end of the liquid cooling plate 600 and limits it in the Z direction, providing a positioning basis for subsequent extrusion of the pipe joint. Figure 6 As can be seen, the rear end face and left end face of the topmost liquid cooling plate 600 are both limited by the stop plate 105. Adjacent liquid cooling plates 600 are connected by pipe joints 700, which allows for the inflow and outflow of coolant.

[0025] It should be noted that the left, right, up, and down directions here are... Figure 6 Based on this, it is understood that this orientation is only for the convenience of the present application and should not be construed as a limitation of the present application.

[0026] like Figure 7 , Figure 8As shown, the clamping assembly 200 includes a first driving assembly, multiple detachably connected pads 207, and a movable insulating plate 208. The first driving assembly includes a first support frame 201, a first lead screw nut 202, a first lead screw 203, a lead screw connecting block 204, a second support frame 205, and a first guide assembly 206. The first support frame 201 is fixedly connected to the base plate 101 and can be fixed by bolts. The first lead screw nut 202 is embedded in the first support frame 201. The first lead screw 203 is connected to the first lead screw nut 202. One end of the first lead screw 203 is connected to a handle, and the other end is connected to the lead screw connecting block 204 through a bearing. The lead screw connecting block 204 is fixedly connected to the second support frame 205. The bottom of the second support frame 205 is connected to the first guide assembly 206, and the first guide assemblies 206 on both sides are connected to the base plate 101. On one side of the second support frame 205, multiple pads 207 are arranged side by side. The pads 207 have downward-protruding steps at both ends, supporting the arc-shaped plate 1021 above the insulating base plate 102 on both sides, ensuring that the bottom center of the pad 207 does not contact the arc-shaped plate 1021 in the middle of the base plate 102. Movable insulating plates 208 are arranged at the ends of the pads 207. The movable insulating plates 208 have downward-protruding steps at both ends, supporting the arc-shaped plate 1021 above the insulating base plate 102 on both sides, ensuring that the bottom center of the movable insulating plates 208 does not contact the arc-shaped plate 1021 in the middle of the insulating base plate 102. This limits the Z-axis positions of the liquid cooling plate 600 and the cylindrical battery cell 500. When the first driving assembly drives the movable insulating plate 208 to move, the steps at both ends of the plate are exactly in the gap between the limiting plate 104 and the insulating base plate 102, which plays a supporting role. The movable insulating plate 208 moves, and the steps also move accordingly to prevent the arc plate 1021 from blocking the movement of the movable insulating plate 208. The end of the movable insulating plate 208 facing the liquid cooling plate 600 is corrugated, which can be adapted to the shape of the liquid cooling plate 600, so that the liquid cooling plate 600 and the cylindrical battery cell 500 are bonded together.

[0027] This application achieves compression through a combination of a lead screw and nut, providing uniform and reliable driving force and enabling self-locking.

[0028] It should be noted that: because the peaks of adjacent liquid cooling plates 600 are not aligned, such as Figure 13 As shown, in order to align with the grooves of each liquid cooling plate 600, when pressing the odd-numbered and even-numbered rows of cells, the movable insulating plate 208 needs to be used alternately on both the left and right sides to ensure that the movable insulating plate 208 can fit against the liquid cooling plate 600. Specifically, it should be noted that the positions of the cells in contact with the movable insulating plate 208 and the adjacent cells are misaligned. Therefore, when pressing each row of cells and the liquid cooling plate, the movable insulating plate can be rotated 180° alternately to make the peaks and valleys of the corrugations correspond to the positions of the cells.

[0029] Considering that adhesive needs to be applied at the contact point between the liquid cooling plate 600 and the cylindrical cell 500, and that the adhesive application area must not contact the movable insulating plate 208, it is preferable to apply the adhesive at the horizontal middle position of the liquid cooling plate 600 (leaving space at the top and bottom where it contacts the movable insulating plate 208, i.e., no adhesive is applied at the top and bottom). Figure 16 As shown, the peak height h1 of the movable insulating plate 208 can be slightly smaller than the peak height h of the liquid cooling plate 600 to ensure that the movable insulating plate 208 can fully contact the peak of the liquid cooling plate 600.

[0030] Among them, reference Figure 7 and Figure 8 The first guide assembly 206 includes a first slider 2061 and a guide rail 2062. The two guide rails 2062 are symmetrically arranged along the vertical plane of the first support frame 201 and are fixedly connected to the base plate 101. Each guide rail 2062 is equipped with two first sliders 2061. The second support frame 205 has a rectangular frame structure, and the two first sliders 2061 are respectively connected to both sides of one end of the second support frame 205. The first guide assembly 206 can achieve the purpose of guidance and ensure the stability of sliding.

[0031] In this embodiment, after manually rotating the handle, the first lead screw 203 rotates. Since the position of the first lead screw nut 202 is fixed, the first lead screw 203 can move along the horizontal axis. The first lead screw 203 is connected to the lead screw connecting block 204 through a bearing. Therefore, the first lead screw 203 can drive the second support frame 205 to move horizontally, thereby driving the pad 207 and the movable insulating plate 208 to move, thereby squeezing the liquid cooling plate 600 to bond with the cylindrical battery cell 500.

[0032] In this embodiment, since the stroke of the first lead screw 203 is limited, the number of pads 207 is unlimited, and the number used can be selected as needed.

[0033] To ensure that the movable insulating plate 208 can compress the liquid cooling plate 600, the alignment between the pads 207 and the movable insulating plate 208 must be considered. Therefore, guide posts can be set on one side of the pads 207 and guide holes can be set on the other side. After the guide post of one pad 207 is inserted into the guide hole of the adjacent pad 207, better stability and alignment effect can be achieved.

[0034] like Figure 9 , Figure 10 , Figure 11As shown, the auxiliary installation assembly 300 is positioned above the limiting plate 104. The auxiliary installation assembly 300 includes an auxiliary installation bracket assembly 301, a second drive assembly, a pin 303, and a pressure head 308. The second drive assembly includes a linear guide assembly 302, a slider connecting plate 304, a lead screw connecting plate 305, a second lead screw 306, a second lead screw nut 307, and a second guide assembly 309. like Figure 9 The auxiliary mounting bracket assembly 301 includes a mounting bracket body 3011 and a track mounting plate 3012. There are two mounting bracket bodies 3011, symmetrically connected to the base plate 101 at intervals and located at both ends of the limiting plate 104. The two ends of the track mounting plate 3012 are connected to the mounting bracket body 3011 by bolts. The track mounting plate 3012 is horizontally arranged, and a vertically penetrating pin hole 3013 is formed along its length on the track mounting plate 3012. A pin 303 can be inserted through the pin hole 3013 and connected to the limiting hole on the slider connecting plate 304, forcing the slider connecting plate 304 to be fixed.

[0035] like Figure 10 and Figure 11 The linear guide assembly 302 includes a linear guide body 3021 and a second slider 3022. The linear guide body 3021 is fixedly connected to the bottom surface of the track mounting plate 3012. The second slider 3022 is slidably connected to the linear guide body 3021. In this embodiment, two second sliders 3022 are provided. The slider connecting plate 304 is simultaneously connected to both second sliders 3022 by bolts. The lead screw connecting plate 305 is in a vertical state, and the top of the lead screw connecting plate 3025 is connected to the slider connecting plate 3022. 4. The second lead screw nut 307 is embedded in the lead screw connecting plate 305. The second lead screw 306 is connected to the second lead screw nut 307. The end of the second lead screw 306 is connected to a bearing. The bearing is installed on the pressure head connecting block 3081. The pressure head connecting block 3081 is installed on the back side of the bearing surface and connects to three pressure head clamping blocks 3082 (upper, middle, and lower). Two pressure head positioning pins 3083 are connected in the middle of the three pressure head clamping blocks 3082. The pressure head 308 is arranged parallel to the lead screw connecting plate 305.

[0036] like Figure 10 and Figure 11 The second guide assembly 309 includes multiple guide rods 3091 and linear bearings 3092. The three linear bearings 3092 are axially embedded in the lead screw connecting plate 305. One end of the guide rod 3091 is fixedly connected to the pressure head 308, and the other end is movably connected to the linear bearing 3092. When the pressure head 308 moves along the horizontal axis, the guide rod 3091 can slide within the linear bearing 3092. The second guide assembly 309 plays a supporting and guiding role.

[0037] In this embodiment, the second slider 3022 can be moved manually or by other means to slide horizontally along the rail body 3021. When it slides to the point where the pressure head clamping block 3082 contacts the pressing surface of the liquid cooling plate 600, it stops. The pressure head positioning pin 3083 extends into the liquid cooling plate connector 601 to provide upward support for the liquid cooling plate 600 and to limit it in the X and Z directions. At this time, the pin 303 is inserted from the pin hole 3013 at the top of the rail mounting plate 3012 and into the limiting hole of the slider connecting plate 304, thereby fixing the second slider 3022. At this time, the second lead screw 306 is turned. Since the second lead screw nut 307 is not moving, the second lead screw 306 can move in the horizontal direction. Due to the presence of the bearing in the second lead screw 306, the threaded motion of the second lead screw 306 is converted into the linear motion of the pressure head 308. The pressure head 308 can then squeeze the pipe joint 700 into the connecting pipe of the liquid cooling plate 600, thereby achieving the connection between the pipe joint 700 and the liquid cooling plate 600.

[0038] like Figure 14 Two top leveling plates 400 are placed on top of the battery cell 500 and the liquid cooling plate 600. The surface of the top leveling plates 400 is aligned with the top positions of the battery cell 500 and the liquid cooling plate 600. The battery cell 500 is slightly shaken by shaking the two top leveling plates 400. The first lead screw 203 is turned again to push the movable insulating plate 208 forward, making the battery cell 500 and the liquid cooling plate 600 adhere more tightly. The second lead screw 306 is turned again to push the pressure head 308 forward, making the connection between the liquid cooling plate 600 and the pipe connector 700 tighter.

[0039] like Figure 12 As shown, two connectors 601 are connected to both sides of the end of the liquid cooling plate 600. After the pipe joint 700 is connected to the connector 601, a passage is formed to allow the coolant to enter and exit. A sealing ring or similar device is provided between the pipe joint 700 and the connector 601 to achieve a sealed connection.

[0040] In this embodiment, the assembly process of the cylindrical battery cell 500, the single-row corrugated liquid cooling plate 600, and their pipe connectors 700 becomes simpler and easier to operate. The insulating base plate 102, the stop plate 105, and the height limiting strip 107 respectively limit the cylindrical battery cell 500 and the liquid cooling plate 600, effectively controlling the dimensional error of the assembled battery and ensuring accurate cell positioning. Only a slight tightening of the second lead screw 306 is needed to allow the pipe connector 700 to smoothly engage with the liquid cooling plate 600, resulting in better sealing of the pipe connector 700 and reducing the effort required for operator work. Furthermore, one device simultaneously completes the positioning and compression between the liquid cooling plate 600 and the cylindrical battery cell 500, as well as the assembly of the single-row corrugated liquid cooling plate 600 and its pipe connectors 700, avoiding multiple operations in the assembly process.

[0041] Example 2 like Figure 8, Figure 13 , Figure 14 , Figure 15 As shown, this embodiment discloses a grouping method, including the following steps: First, push the first lead screw 203 to its foremost position, and place the first liquid cooling plate 600 located at the end to the rearmost position of the insulating base plate 102, with the first liquid cooling plate 600 close to the fixed insulating plate 103 (e.g., Figure 7 As shown), and attach it to it so that the first liquid cooling plate 600 is embedded in the wave-shaped groove of the fixed insulating plate 103, and the middle part of the liquid cooling plate 600 is coated with adhesive at the contact position with the cylindrical battery cell 500. Next, the cylindrical cells 500 are placed into the last row of spaces on the insulating base plate 102, forming the first row. The first row of cylindrical cells 500 are close to the first liquid cooling plate 600, adhering to it, so that the cylindrical cells 500 are embedded in the wave-shaped groove of the first liquid cooling plate 600. Then, the second liquid cooling plate 600 is placed, close to the position of the first row of cylindrical cells 500, adhering to it, so that the first row of cylindrical cells 500 are embedded in one side of the second liquid cooling plate 600. All liquid cooling plates 600 in the middle part of the module are coated with adhesive on both sides. Two parallel pipe joints 700 are placed between the first and second liquid cooling plates 600. The two ends of the pipe joints 700 are roughly connected to the first and second liquid cooling plates 600 (not tightly connected at this time, requiring subsequent compression). Figure 12 As shown); connect an appropriate amount of pad 207 (such as) to the front end of the second support frame 205. Figure 8 As shown), the movable insulating plate 208 is located at the foremost end and is in contact with the second liquid cooling plate 600, so that the second liquid cooling plate 600 is embedded in the groove of the movable insulating plate 208. Tightening the first lead screw 203 sequentially pushes the second support frame 205, the pad 207, and the movable insulating plate 208, causing the movable insulating plate 208 to advance and press against the second liquid cooling plate 600 (as shown). Figure 8 As shown), the second liquid cooling plate 600 moves forward to clamp the middle row of cylindrical cells 500 between the two liquid cooling plates 600, so that the cylindrical cells 500 are in close contact with the two liquid cooling plates 600 and are firmly bonded to the adhesive on the sides of the two liquid cooling plates 600; thus achieving a tight bond between the liquid cooling plate 600 and the cylindrical cells 500.

[0042] Push the second slider 3022 to the appropriate position and insert the pin 303 to fix the relative position between the slider connecting plate 304 and the track mounting plate 3012 (e.g., Figure 11 (As shown); place the stop plate 105 into the appropriate limiting groove on the limiting plate 104, and push the two stop plates 105 to the position where the first liquid cooling plate 600 and the second liquid cooling plate 600 are fixed (as shown). Figure 6(As shown); tighten the second lead screw 306, and simultaneously tighten both second lead screws 306. The second lead screw 306 advances, pushing the pressure head 308 forward. The pressure head 308 advances and presses against the second liquid cooling plate 600. At this time, the two pipe joints 700 are pre-positioned between the two liquid cooling plates 600. The pressure head pressing block 3082 stops when it contacts the pressing surface of the liquid cooling plate 600. The pressure head positioning pin 3083 extends into the liquid cooling plate connector 601, providing upward support for the liquid cooling plate 600 and limiting it in the X and Z directions. The pressure head 308 advances and presses against the second liquid cooling plate 600, pressing against the pipe joint 700. The stop plate 105 supports the first liquid cooling plate 600, so that both ends of the pipe joint 700 are squeezed into the two liquid cooling plates 600, making a tight fit.

[0043] Two top leveling plates 400 are placed on top of the battery cell 500 and the liquid cooling plate 600. The surface of the top leveling plates 400 is aligned with the top positions of the battery cell 500 and the liquid cooling plate 600. The battery cell 500 is slightly shaken by shaking the two top leveling plates 400. The first lead screw 203 is turned again to push the movable insulating plate 208 forward, making the battery cell 500 adhere more tightly to the liquid cooling plate 600. The second lead screw 306 is turned again to push the pressure head 308 forward, making the connection between the liquid cooling plate 600 and the pipe connector 700 tighter.

[0044] Repeat the above steps until all cylindrical cells 500 and liquid cooling plates 600 and their pipe joints 700 are connected in a group. During the grouping process, the number of pads 207 is gradually reduced.

[0045] This embodiment provides a method for assembling cylindrical battery cells 500 with multiple liquid cooling plates 600 and pipe connectors 700. In this embodiment, the cylindrical battery cells 500 and liquid cooling plates 600 are positioned and squeezed step by step with high positioning accuracy. The cylindrical battery cells 500 and liquid cooling plates 600 are tightly attached, which effectively controls the size error of the assembled battery, ensures accurate cell positioning, and provides good heat dissipation, thereby improving the assembly accuracy.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery module assembly device, characterized in that, Includes a fixing component (100), a clamping component (200), an auxiliary installation component (300), and a top leveling plate (400); The fixing assembly (100) includes a base plate (101) and a cell limiting assembly and a liquid cooling plate limiting assembly mounted on the base plate (101). The cell limiting assembly is provided with a cell positioning groove, and the liquid cooling plate fixing assembly is located on both sides of the cell limiting assembly. The clamping assembly (200) includes a first drive assembly, and a plurality of detachable pads (207) and a movable insulating plate (208) connected in sequence to the movable end of the first drive assembly. The movable insulating plate (208) has downward protruding steps on both sides. The steps on both sides support the movable insulating plate (208) so that its bottom does not contact the arc plate (1021) inside the cell limiting assembly. The auxiliary installation component (300) includes an auxiliary installation bracket component (301), a second drive component, and a pressure head (308). The auxiliary installation bracket component (301) is located above the liquid cooling plate limiting component. The second drive component is slidably connected to the auxiliary installation bracket component (301). The movable end of the second drive component is connected to the pressure head (308). The pressure head (308) can support the liquid cooling plate together with the stop plate (105) in the liquid cooling plate limiting component. The top alignment plate (400) can be installed above the battery cell and liquid cooling plate and corresponds to the shape of both.

2. The battery module assembly device according to claim 1, characterized in that: The cell limiting assembly includes an insulating base plate (102), a fixed insulating plate (103), and an end support frame (106). An insulating base plate (102) is installed on the base plate (101). Several rows of arc-shaped plates (1021) are installed on the upper surface of the insulating base plate (102). Each row of arc-shaped plates (1021) forms a wave shape. The adjacent rows of arc-shaped plates (1021) can form a space suitable for the arrangement of cylindrical cells. The end support frame (106) is connected to the base plate (101) and located at the end of the insulating base plate (102). The fixed insulating plate (103) is installed on the end support frame (106) and connected to the top surface of the insulating base plate (102).

3. The battery module assembly device according to claim 1, characterized in that: The liquid cooling plate limiting assembly includes a limiting plate (104), a stop plate (105), and a height limiting strip (107). The limiting plate (104) is connected to the base plate (101). The limiting plates (104) on both sides of the cell limiting assembly are arranged in parallel. Multiple first limiting grooves (1041) are opened in parallel along the length direction of the limiting plate (104). The bottom of the stop plate (105) is inserted into the first limiting groove (1041). The height limiting strip (107) is located between the limiting plate (104) and the cell limiting assembly. The upper surface of the height limiting strip (107) supports the liquid cooling plate upward and limits it in the Z direction.

4. A battery module assembly device according to claim 1, characterized in that: The first drive assembly includes a first support frame (201), a first lead screw nut (202), a first lead screw (203), a lead screw connecting block (204), a second support frame (205), and a first guide assembly (206); The first support frame (201) is mounted on the base plate (101), the first lead screw nut (202) is embedded in the first support frame (201), the first lead screw (203) is connected to the first lead screw nut (202), the end of the first lead screw (203) is rotatably connected to the lead screw connecting block (204), the lead screw connecting block (204) is connected to the second support frame (205), the first guide assembly (206) is connected to the base plate (101), and the bottom of the second support frame (205) is connected to the first guide assembly (206).

5. A battery module assembly device according to claim 4, characterized in that: The first guide assembly (206) includes a first slider (2061) and a guide rail (2062). The two guide rails (2062) are symmetrically arranged along the vertical plane of the first support frame (201). The guide rails (2062) are fixedly connected to the base plate (101). Each guide rail (2062) is equipped with two first sliders (2061). The first support frame (201) has a rectangular frame structure. The two first sliders (2061) are respectively connected to the two sides of one end of the first support frame (201).

6. A battery module assembly device according to claim 1, characterized in that: The auxiliary installation assembly (300) also includes a pin (303). The auxiliary installation frame assembly (301) includes a mounting frame body (3011) and a track mounting plate (3012). The two mounting frame bodies (3011) are symmetrically connected to the base plate (101) at intervals. The two ends of the track mounting plate (3012) are connected to the mounting frame body (3011). The track mounting plate (3012) has a vertical through pin hole (3013) along its length. The pin (303) is movably connected to the pin hole (3013).

7. A battery module assembly device according to claim 6, characterized in that: The second drive assembly includes a linear guide assembly (302), a slider connecting plate (304), a lead screw connecting plate (305), a second lead screw (306), and a second lead screw nut (307). The linear guide assembly (302) is installed at the bottom of the track mounting plate (3012). The top surface of the slider connecting plate (304) is connected to the linear guide assembly (302). The lead screw connecting plate (305) is connected to the bottom of the slider connecting plate (304). The second lead screw nut (307) is connected to the lead screw connecting plate (305). The second lead screw (306) is connected to the second lead screw nut (307). The end of the second lead screw (306) is rotatably connected to the pressure head connecting block (3081). The pressure head connecting block (3081) is connected to the pressure head (308).

8. A battery module assembly device according to claim 7, characterized in that: The second drive assembly further includes a second guide assembly (309); the second guide assembly (309) includes a plurality of guide rods (3091) and a plurality of linear bearings (3092), the plurality of linear bearings (3092) being axially embedded in the lead screw connecting plate (305), one end of the guide rod (3091) being fixedly connected to the pressure head (308), and the other end being slidably connected to the linear bearing (3092).

9. A battery module assembly device according to claim 7, characterized in that: The pressure head connecting block (3081) is connected to three pressure head clamping blocks (3082) on the side opposite to the bearing. Two pressure head positioning pins (3083) are connected in the middle of the three pressure head clamping blocks (3082). The pressure head (308) is arranged in parallel with the lead screw connecting plate (305).

10. A battery module assembly device according to claim 1, characterized in that: The movable insulating plate (208) is wavy on the side near the liquid cooling plate, and the liquid cooling plate is also wavy.

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