Battery module extrusion device

Abstract

The application discloses a battery module extrusion device, which comprises a machine table, two positive clamping parts slidingly installed on the surface of the machine table along the length direction of the machine table, a positive driving assembly arranged on the machine table and used for driving the positive clamping parts to move, a supporting table arranged on the surface of the machine table and located between the two positive clamping parts, and two side clamping parts installed on the two sides of the machine table along the width direction of the machine table. The battery module extrusion device can clamp and align the battery cells and the end plates in the length, width and vertical surface directions of the machine table. The positive clamping parts extrude the structural glue between the battery cells and between the battery cells and the end plates to flow uniformly and form glue layers, so that the adhesive strength and the connection stability of the battery cells are improved. The side clamping parts and the horizontal clamping parts ensure the width and vertical alignment accuracy of the battery cells, and ensure the regular structure of the module.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery processing, and in particular to a battery module extrusion device. BACKGROUND

[0002] In the field of new energy battery production, a battery module, as a core component, is assembled by a plurality of battery cells and two end plates. The stability of the connection between the battery cells and the end plates and the regularity of the overall structure of the module directly determine the safety and performance of the battery module. At present, during the assembly of the battery module, the single-row battery cells need to be arranged along a preset direction, and structural adhesive needs to be coated between the battery cells and the end plates to realize the fixed connection between the battery cells and the end plates. At the same time, the battery cells need to be accurately aligned in the length, width and vertical table directions to avoid problems such as loose module structure, abnormal electrical conductivity or vibration displacement in later use caused by the offset of the battery cells.

[0003] However, the existing battery module assembly is usually completed by a simple clamping device for positioning and extruding the battery cells. The simple clamping device can usually only realize clamping positioning in a single direction, such as the length direction, and cannot simultaneously align and adjust the battery cells in the width direction and the vertical table direction. Therefore, multiple switching of devices or processes is required to complete multi-directional calibration, which is not only complicated to operate and low in production efficiency, but also prone to accumulated errors caused by multiple positioning, resulting in insufficient alignment accuracy of the battery cells and affecting the overall assembly quality of the module.

[0004] Therefore, there is an urgent need for a battery module extrusion device that can realize multi-directional synchronous accurate clamping and ensure uniform distribution of structural adhesive. SUMMARY

[0005] The application aims to provide a battery module extrusion device to solve the problem that the conventional device can only realize clamping positioning in a single direction, cannot simultaneously align and adjust the battery cells in the width direction and the vertical table direction, requires multiple switching of devices or processes to complete multi-directional calibration, is not only complicated to operate and low in production efficiency, but also prone to accumulated errors caused by multiple positioning, resulting in insufficient alignment accuracy of the battery cells and affecting the overall assembly quality of the module.

[0006] To achieve the above purpose, the application adopts the following technical solutions:

[0007] A battery module extrusion device, comprising a machine table;

[0008] A positive clamping part, the number of the positive clamping part is two, and the positive clamping part is slidingly installed on the table surface of the machine table along the length direction of the machine table. A positive driving assembly for driving the positive clamping part to move is arranged on the machine table.

[0009] A support table, the support table is arranged on the table surface of the machine table, and the support table is located between the two positive clamping parts. The support table is used for placing single-row battery cells.

[0010] The side clamping part has two sides installed along the width direction of the machine tool on both sides. The machine tool is provided with a side drive assembly for driving the side clamping parts to move. The two side clamping parts have a clamping state and a loosening state.

[0011] The downward clamping part is installed in a non-direct contact manner on the side opposite to the side clamping part and the support platform, and a downward linear driver is installed between the downward clamping part and the side clamping part.

[0012] Optionally, the positive drive assembly includes a main linear driver and a secondary linear driver; the main linear driver and the secondary linear driver are respectively disposed at both ends of the machine table in the length direction, the main linear driver is connected to one of the positive clamping parts, and the secondary linear driver is connected to the other positive clamping part.

[0013] Optionally, the positive clamping part connected to the secondary linear actuator is provided with a positioning linear actuator. The positive clamping part connected to the secondary linear actuator has a connecting block on the side facing the machine tool. The connecting block has a sliding opening on the side facing the machine tool. The table surface of the machine tool has a bayonet. A locking block extending into the bayonet is slidably connected inside the sliding opening. The locking block is connected to the positioning linear actuator. The positioning linear actuator is used to drive the locking block to move along a direction perpendicular to the table surface of the machine tool. The secondary linear actuator is connected to the positive clamping part through the connecting block.

[0014] Optionally, the table surface of the machine tool is provided with slide rails on both sides along the length direction, and each of the two positive clamping parts is provided with a slider that is slidably connected to the two slide rails.

[0015] Optionally, the side drive assembly includes a bracket and a side linear module. The bracket is of two types and is installed on both sides of the machine tool along the width direction of the machine tool. The side linear module is installed between the bracket and the side clamping part on the same side.

[0016] Optionally, a telescopic rod is slidably passed through the downward clamping part, one end of the telescopic rod is provided with a buffer plate, and the other end is provided with a limit plate; the buffer plate is located between the support platform and the downward clamping part, and a downward elastic element is installed between the buffer plate and the downward clamping part.

[0017] Optionally, a spacer is provided on the side of the support platform away from the machine tool. The spacer is a strip-shaped body extending along the length direction of the machine tool. A slot is provided at one end of the spacer along the length direction of the machine tool. A strapping is placed on the side of the support platform away from the machine tool. The strapping is loop-shaped, and one of its front edges is inserted into the slot at one end of the spacer to fit the strapping onto a section of the spacer. The two side edges of the strapping are located on both sides of the spacer along the width direction of the machine tool.

[0018] Optionally, a squeezing part is provided between the positive clamping part and the support platform. The squeezing part is provided with a buffer rod that slides through the positive clamping part. One end of the buffer rod that slides through the positive clamping part is provided with an anti-detachment component, and the anti-detachment component is restricted by the positive clamping part so that the buffer rod cannot detach from the positive clamping part. A positive elastic component is provided between the positive clamping part and the squeezing part.

[0019] Optionally, a connector is provided on the side of the extrusion section facing the machine platform, and a receiving groove is provided on the side of the connector facing the support platform. A support extending to the outside of the opening of the receiving groove is slidably connected inside the receiving groove. A telescopic drive is provided between the connector and the support, and the telescopic drive is used to adjust the length of the support extending out of the receiving groove.

[0020] Optionally, a material-stopping linear drive is provided on the side of the extrusion section facing the machine platform. The material-stopping linear drive is provided with a baffle and is used to drive the baffle to move above the strapping tape.

[0021] Compared to existing technologies, the beneficial effects of this application are:

[0022] 1. It can achieve precise clamping and alignment of battery cells and end plates in three directions: length, width and vertical table surface. The pressure of the front clamping part makes the structural adhesive between battery cells and between battery cells and end plates flow evenly to form an adhesive layer, which significantly improves the adhesive strength and battery cell connection stability. The side clamping part and the top clamping part respectively ensure the alignment accuracy of battery cell width and vertical direction, ensuring the module structure is neat.

[0023] 2. The two positive clamping parts adopt a combination of a main linear driver and a secondary linear driver, which takes into account both precise control and cost-effectiveness. The secondary positive clamping part is mechanically locked through a locking mechanism to prevent displacement during compression and improve clamping stability.

[0024] 3. The positive elastic element of the positive clamping part, the extrusion part and the downward elastic element of the downward clamping part, and the buffer plate can respectively buffer the extrusion force in the length and vertical directions, while increasing the contact area with the battery cell to make the pressure uniform. Together with the buffer rod, telescopic rod and limiting structure, it can prevent excessive pressure from damaging the battery cell and protect the integrity of the battery cell.

[0025] 4. The linear actuator and baffle of the extrusion section can support the end plate and prevent it from falling off when placed. Attached Figure Description

[0026] The accompanying drawings further illustrate this application, but the content of the drawings does not constitute any limitation on this application.

[0027] Figure 1 This is a structural schematic diagram of the battery module extrusion device of this application, viewed from above.

[0028] Figure 2 This is a structural diagram of the machine tool, support platform, clamping part, spacing part, and strapping strap of this application. For ease of illustration, the machine tool and support platform are shown as separate and do not represent the actual situation.

[0029] Figure 3 This is a cross-sectional view of the machine tool, clamping part and connecting block of this application in the AA direction, wherein only a part of the machine tool is shown in the length direction;

[0030] Figure 4 This is a structural schematic diagram of the side clamping part, bracket, side linear module, clamping part, top linear driver and buffer plate of this application;

[0031] Figure 5 This is a structural schematic diagram of the downward clamping part, buffer plate, telescopic rod, limiting plate, and downward elastic element of this application;

[0032] Figure 6 This is a structural schematic diagram of the support platform, partition, card slot, and strapping strap of this application;

[0033] Figure 7 This is a structural schematic diagram of the clamping part, the squeezing part, the buffer rod, the anti-dislodgement part, the positive elastic part, the material stop linear actuator, and the baffle of this application;

[0034] Figure 8 This is a structural schematic diagram of the connector, receiving groove, support, and telescopic drive component of this application.

[0035] In the attached diagram: 1. Machine base; 2. Support platform; 31. Front clamping part; 32. Side clamping part; 33. Top clamping part; 41. Top linear driver; 42. Main linear driver; 43. Secondary linear driver; 51. Bracket; 52. Side linear module; 61. Slide rail; 62. Slider; 71. Buffer plate; 72. Telescopic rod; 73. Limiting plate; 74. Top elastic element; 81. Spacer; 82. Slot; 83. Strapping strap; 831. Front edge strap 832. Side belt body; 91. Extrusion section; 92. Buffer rod; 93. Anti-detachment component; 94. Positive elastic component; 101. Connecting component; 102. Receiving groove; 103. Support component; 104. Telescopic drive component; 111. Material stop linear actuator; 112. Baffle; 121. Positioning linear actuator; 122. Connecting block; 123. Slide; 124. Bayonet; 125. Locking block; 13. Positive drive assembly; 14. Side drive assembly. Detailed Implementation

[0036] The embodiments of this application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, and "several" means one or more, unless otherwise expressly and specifically defined.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] In this embodiment, by Figures 1-8 A battery module extrusion device is provided, comprising a machine base 1, a front clamping part 31, a support platform 2, a side clamping part 32, and a downward clamping part 33.

[0041] Two positive clamping parts 31 are slidably mounted on the table surface of the machine tool 1 along the length direction of the machine tool 1. A positive drive assembly 13 for driving the positive clamping parts 31 to move is provided on the machine tool 1. A support platform 2 is provided on the table surface of the machine tool 1 and is located between the two positive clamping parts 31. The support platform 2 is used to place a single row of battery cells. Two side clamping parts 32 are mounted on both sides of the machine tool 1 along the width direction of the machine tool 1. The two side clamping parts 32 are arranged opposite each other, and the height of the side clamping parts 32 is higher than that of the support platform 2. In addition, a side drive assembly 14 for driving the side clamping parts 32 to move is provided on the machine tool 1 so that the two side clamping parts 32 have a clamping state and a loosening state, so as to clamp a row of battery cells placed on the support platform 2. A downward clamping part 33 is installed on the side opposite to the support platform 2 in a non-direct contact manner. A downward linear driver 41 is installed between the downward clamping part 33 and the side clamping part 32.

[0042] For details, please refer to Figure 1 As shown, the two front clamping parts 31 can move relative to each other in the length direction of the machine base 1 through a linear drive structure; the two side clamping parts 32 can also move relative to each other in the width direction of the machine base 1 through a linear drive structure. When the two side clamping parts 32 are close to each other, they are in a clamping state; when they are far apart, they are in a loosening state. The downward clamping part 33 can move in a direction perpendicular to the table surface of the machine base 1 through the downward linear drive 41.

[0043] Alternatively, the linear actuator 41 is a cylinder.

[0044] The support platform 2 on the table of the machine tool 1 is used to place a row of battery cells. Multiple battery cells are arranged along the length of the machine tool 1. End plates are placed on both sides of the row of battery cells along the length of the machine tool 1. Adhesive is applied between the battery cells and between the battery cells and the end plates to connect them. Two positive clamping parts 31 clamp and compress the row of battery cells along the length of the machine tool 1, causing the structural adhesive to flow evenly between the battery cells and between the battery cells and the end plates, forming an adhesive layer, increasing the adhesive strength, and achieving the connection between the battery cells. Simultaneously, two side clamping parts 32 clamp and compress the row of battery cells along the width of the machine tool 1, aligning the multiple battery cells at both ends in the width direction of the machine tool 1. At the same time, a driving linear actuator 41 moves the downward clamping part 33 along the direction close to the table surface of the machine tool 1 to press the tops of the multiple battery cells, aligning the multiple battery cells at both ends in the direction perpendicular to the table surface of the machine tool 1.

[0045] In summary, for reference Figure 1As shown, battery cells arranged along the length of machine 1 are placed on support platform 2 on machine 1. End plates are placed on both sides of a row of battery cells along the length of machine 1. Glue is applied between multiple battery cells and the two end plates. Two opposing clamping parts 31 that can move in opposite directions along the length of machine 1 clamp and compress the battery cells, causing the structural adhesive between the battery cells and between the battery cells and the end plates to flow evenly and form an adhesive layer to increase the adhesive strength and achieve the connection between the battery cells. The battery cells are clamped and compressed by two opposing side clamping parts 32 that can move in opposite directions along the width of machine 1, aligning the two ends of multiple battery cells in the width direction of machine 1. The downward linear actuator 41 drives the downward clamping part 33 to move towards the table surface of machine 1, pressing the top of the battery cells and aligning the two ends of multiple battery cells in the direction perpendicular to the table surface of machine 1.

[0046] refer to Figure 2 As shown, in order to achieve the effect of clamping and squeezing a row of battery cells along the length of the machine tool 1 by the two positive clamping parts 31, and at the same time, in order to save costs, two different drive structures, main and auxiliary, are used to drive the two positive clamping parts 31 to move, which is the aforementioned positive drive assembly 13. Specifically, the positive drive assembly 13 includes a main linear driver 42 and a secondary linear driver 43; the main linear driver 42 and the secondary linear driver 43 are respectively disposed at both ends of the length of the table surface of the machine tool 1, the main linear driver 42 is connected to one of the positive clamping parts 31, and the secondary linear driver 43 is connected to the other positive clamping part 31.

[0047] Optionally, the main linear actuator 42 is a servo electric cylinder, and the secondary linear actuator 43 is a pen-shaped cylinder.

[0048] Furthermore, the selection of a servo electric cylinder as the main linear actuator 42 and a pen-shaped cylinder as the secondary linear actuator 43 is primarily based on a comprehensive consideration of functional requirements and cost-effectiveness: the servo electric cylinder offers high control precision and stable thrust, providing precise squeezing force and displacement control for the main side positive clamping part 31, ensuring uniform flow of structural adhesive between battery cells; while the pen-shaped cylinder has a compact structure and fast response, acting as the secondary side actuator to move the secondary side positive clamping part 31, and can cooperate with the main side positive clamping part 31 to achieve clamping and releasing actions. At the same time, compared to the dual servo electric cylinder configuration, the combination of one servo electric cylinder and one pen-shaped cylinder can reduce the overall cost, simplifying the structure while meeting the secondary side auxiliary clamping and releasing functions, and achieving a balance between precise control and economy.

[0049] For more specific details, please refer to Figure 2As shown, the main linear driver 42 and the secondary linear driver 43 can drive the two positive clamping parts 31 to move relative to each other. That is, the two positive clamping parts 31 can move away from each other or move closer to each other. In other words, the two positive clamping parts 31 also have a clamping state and a loosening state. These two movement states correspond to the clamping state and loosening state of the two side clamping parts 32 mentioned above. Taking one state as an example, when the two positive clamping parts 31 are in the clamping state, the two side clamping parts 32 are also in the clamping state. The movement states (clamping or loosening) of the two positive clamping parts 31 and the two side clamping parts 32 are consistent and synchronous.

[0050] Based on the above, refer to Figure 3 As shown, a servo electric cylinder is selected as the main linear actuator 42 and a pen-shaped cylinder as the secondary linear actuator 43. The main clamping force of a row of battery cells mainly comes from the main side positive clamping part 31 connected to the main linear actuator 42. In order to lock the secondary side positive clamping part 31 connected to the secondary linear actuator 43 tightly in a predetermined position, the positive clamping part 31 connected to the secondary linear actuator 43 is provided with a positioning linear actuator 121. A connecting block 122 is provided on the side of the positive clamping part 31 connected to the secondary linear actuator 43 facing the machine base 1. A sliding opening 123 is opened on the side of the connecting block 122 facing the machine base 1. A bayonet 124 is opened on the table surface of the machine base 1. A locking block 125 extending into the bayonet 124 is slidably connected inside the sliding opening 123. The locking block 125 is connected to the positioning linear actuator 121. The positioning linear actuator 121 is used to drive the locking block 125 to move along the direction perpendicular to the table surface of the machine base 1. The secondary linear actuator 43 is connected to the positive clamping part 31 through the connecting block 122.

[0051] The linear actuator 121 is preferably a cylinder. The telescopic shaft of the linear actuator 121 and the locking block 125 are engaged. Specifically, the locking block 125 has an irregularly shaped locking interface on its side, and the telescopic shaft of the linear actuator 121 has a locking block that engages with the locking interface, preventing the locking block from leaving the locking interface on the locking block 125 along the direction perpendicular to the machine table 1. This design allows the gap fit of the locking connection to buffer impact forces through minor deformation. If the telescopic shaft of the linear actuator 121 and the locking block 125 were rigidly connected, the impact force would be directly transmitted to the output shaft of the linear actuator 121. The gap fit of the locking connection prevents damage to the precision components inside the linear actuator 121. Its main effects are avoiding stress concentration and buffering instantaneous impact forces. It also facilitates the installation and replacement of the locking block 125.

[0052] For details, please refer to Figure 3As shown, the secondary linear actuator 43 is connected to one of the positive clamping parts 31 via the connecting block 122, so that the driving force can be stably transmitted to realize the movement of the positive clamping part 31. The sliding groove 123 and the locking block 125 provided on the connecting block 122 cooperate with the locking linear actuator 121 and the locking slot 124 of the machine 1. After the positive clamping part 31 moves to the target position, the locking linear actuator 121 drives the locking block 125 to move vertically and embed into the locking slot 124 to form a mechanical lock, preventing the positive clamping part 31 from being displaced due to force when squeezing the battery cell, thus ensuring clamping accuracy. When it is necessary to release the battery cell module, the locking block 125 can disengage from the locking slot 124 to release the lock without affecting the movement of the positive clamping part 31 driven by the secondary linear actuator 43. This structure ensures the reliability of drive transmission through the connecting block 122, and achieves precise positioning in the working state through the positioning mechanism formed by the sliding mouth 123, the locking block 125, the locking mouth 124 of the machine tool 1, and the locking linear driver 121. It takes into account both adjustment flexibility and operation stability, and further improves the accuracy and reliability of cell extrusion.

[0053] In addition, refer to Figure 3 As shown, in order to guide the stable movement of the positive clamping part 31, slide rails 61 are provided on both sides of the table surface of the machine tool 1 along the length direction. Each of the two positive clamping parts 31 is provided with a slider 62 that is slidably connected to the two slide rails 61. The slide rails 61 on the table surface of the machine tool 1 cooperate with the sliders 62 of the positive clamping part 31 to provide precise guidance for the movement of the positive clamping part 31 along the length direction of the machine tool 1, ensuring that its movement is smooth and the trajectory is stable, thereby improving the accuracy of clamping and squeezing the battery cell.

[0054] As mentioned above, refer to Figure 4 As shown, the two side clamping parts 32 move relative to each other, and have a clamping state and a loosening state. In order to achieve stable movement and precise control of the side clamping parts 32, and at the same time, the side clamping parts 32 need to be supported. A drive structure with a support frame is required. Specifically, the side drive assembly 14 includes a bracket 51 and a side linear module 52. There are two brackets 51, which are not in direct contact and are installed on both sides of the machine base 1 along the width direction of the machine base 1. The side linear module 52 is installed between the bracket 51 and the side clamping part 32 on the same side.

[0055] Optionally, the side linear module 52 is a cylinder.

[0056] Specifically, the brackets 51 on both sides of the machine tool 1 provide the mounting base for the side linear module 52, which can drive the side clamping part 32 to move smoothly along the width direction of the machine tool 1, ensuring that the two clamping parts 32 can accurately achieve opposite or opposite movements, thereby reliably completing the side clamping and alignment of the battery cell.

[0057] In addition, refer to Figure 5As shown, in order to provide buffer protection for the downward clamping part 33 pressing the battery cell, a telescopic rod 72 is slidably passed through the downward clamping part 33. One end of the telescopic rod 72 is provided with a buffer plate 71, and the other end is provided with a limit plate 73. The buffer plate 71 is located between the support platform 2 and the downward clamping part 33, and a downward elastic element 74 is installed between the buffer plate 71 and the downward clamping part 33.

[0058] The downward elastic element 74 can be selected as a spring, and the spring is sleeved on the telescopic rod 72. The spring is located between the buffer plate 71 and the downward clamping part 33, and the two ends of the spring are respectively connected to the buffer plate 71 and the downward clamping part 33.

[0059] For details, please refer to Figure 5 As shown, the buffer plate 71 is the component that directly contacts the battery cell. Therefore, the downward pressure of the downward clamping part 33 can be buffered by the downward elastic element 74 to avoid excessive pressure damaging the battery cell. In addition, the buffer plate 71 can increase the contact area with the battery cell, making the pressure more uniform. The telescopic rod 72, together with the limiting plate 73, can limit the movement range of the buffer plate 71 to ensure the stability of the buffering process, ensuring that the battery cell is vertically aligned and protecting the battery cell from damage.

[0060] refer to Figure 6 As shown, in order to facilitate the bundling and fixing of the battery cells and end plates, a spacer 81 is provided on the side of the support platform 2 away from the machine base 1. The spacer 81 is a strip-shaped body extending along the length direction of the machine base 1. The number of spacers 81 can be multiple and they are distributed at intervals along the width direction of the machine base 1. A slot 82 is provided at one end of the spacer 81 along the length direction of the machine base 1. A strapping strap 83 is placed on the side of the support platform 2 away from the machine base 1. The strapping strap 83 is a loop and one of its front side strips 831 is inserted into the slot 82 at one end of the spacer 81 to fit the strapping strap 83 onto a section of the spacer 81. The two side strips 832 of the strapping strap 83 are located on both sides of the spacer 81 along the width direction of the machine base.

[0061] The strapping band 83 is preferably rectangular in shape, dividing the annular strapping band 83 into four segments, including two side strips 832 and two front strips 831. These four segments are connected end-to-end to form the annular strapping band 83. The front strips 831 refer to the two strip segments facing each other along the length of the machine base 1 when the strapping band 83 is placed horizontally. The side strips 832 refer to the two strip segments facing each other along the width of the machine base 1 when the strapping band 83 is placed horizontally. The strapping band 83 can be made of stainless steel, nickel-plated steel, or titanium alloy, etc.

[0062] For details, please refer to Figure 6As shown, the spacer 81 can be used to place a row of battery cells. After the row of battery cells is clamped and squeezed, the gaps between the battery cells are eliminated, and the structural adhesive between the battery cells and between the battery cells and the end plate flows evenly to form an adhesive layer. At this time, the strapping tape 83 is taken out from the slot 82 from bottom to top. The strapping tape 83 is put on the battery cell module directly above. The two side strips 832 of the strapping tape 83 protrude outwards, making it easy for people to hold and put on upwards, which is simple and convenient. Then, another external strapping tape 83 is taken and put on the battery cell module composed of battery cells and end plates from top to bottom, so that two strapping tapes 83 are put on the battery cell module, and the two strapping tapes 83 are separated vertically. Subsequently, the two clamping parts 31 release the compressive force, and the multiple cells and end plates become slightly loose after the compressive force is removed, thereby tightening the strapping tape 83, thus achieving the binding of the cells and preventing the cells from loosening. This is used to tightly bind a single row of cells into a rigid cell module and prevent the cells from shifting due to vibration or collision.

[0063] In addition, in order to detect whether the cable tie 83 is in the correct position, a cable tie detection grating is installed on the side of the spacer 81 away from the slot 82. The cable tie detection grating can be used to detect whether the cable tie 83 is in the correct position.

[0064] refer to Figure 7 As shown, in order to provide buffer protection for clamping along the length of the machine tool 1, a squeezing part 91 is provided between the positive clamping part 31 and the support table 2. The squeezing part 91 is provided with a buffer rod 92 that slides through the positive clamping part 31. One end of the buffer rod 92 that slides through the positive clamping part 31 is provided with an anti-detachment member 93, and the anti-detachment member 93 is restricted by the positive clamping part 31 so that the buffer rod 92 cannot detach from the positive clamping part 31. A positive elastic member 94 is provided between the positive clamping part 31 and the squeezing part 91.

[0065] The extrusion part 91 is a component that directly contacts the end plate. The extrusion part 91 is roughly rectangular or rectangular in shape. In order to prevent the end plate from shifting, the side of the end plate facing away from the battery cell has a raised strip, and the side of the extrusion part 91 facing the end plate has a groove that matches and corresponds to the raised strip, so that the extrusion part 91 can limit the end plate when it extrudes the end plate and the battery cell.

[0066] Optionally, the positive elastic element 94 is a spring, and in order to limit the extrusion part 91 and protect the spring, the positive clamping part 31 is equipped with a limiting element on the side connected to the positive elastic element 94. A part of the spring is embedded in the limiting element. When the extrusion part 91 excessively compresses the spring, it will press against the limiting element, thereby limiting the extrusion part 91 and protecting the spring.

[0067] For details, please refer to Figure 7As shown, the two positive clamping parts 31 move towards each other, and the extrusion part 91 extrudes the battery cell along its length. The positive elastic member 94 can buffer the extrusion force of the positive clamping part 31 to avoid excessive pressure that could damage the battery cell. In addition, the extrusion part 91 increases the contact area with the battery cell, making the pressure more uniform. Furthermore, the buffer rod 92, together with the anti-detachment member 93, limits the movement range of the extrusion part 91 to ensure stable buffering, which not only ensures the uniformity of the adhesive layer between the battery cells but also protects the battery cells from damage.

[0068] Based on the foregoing, refer to Figure 8 As shown, when the strapping 83 in the slot 82 is put onto the battery module consisting of the battery cell and the end plate, since the two clamping parts 31 have not yet released the squeezing pressure, there will be slight slack between the multiple battery cells and the end plate due to the loss of squeezing pressure. Therefore, the strapping 83 will not be tightened. Before the squeezing of the battery cell and the end plate is released, the strapping 83 needs to be supported. For this purpose, a connector 101 is provided on the side of the squeezing part 91 facing the machine base 1. A receiving groove 102 is provided on the side of the connector 101 facing the support platform 2. A support member 103 extending to the outside of the opening of the receiving groove 102 is slidably connected inside the receiving groove 102. A telescopic drive member 104 is provided between the connector 101 and the support member 103. The telescopic drive member 104 is used to adjust the length of the support member 103 extending out of the receiving groove 102.

[0069] The telescopic drive component 104 can be selected as a screw bolt, a cylinder, or an electric push rod. These structures can all adjust the length of the support component 103 extending out of the receiving groove 102. Considering the simplification of the structure, the telescopic drive component 104 is preferably a screw bolt. The screw bolt is threaded to the support component 103 and rotatably connected to the connector 101. The length of the support component 103 extending out of the receiving groove 102 can be adjusted by forward and reverse rotation.

[0070] Specifically, when the extrusion part 91 extrudes the end plate and the battery cell, and the strapping 83 in the slot 82 is placed on the battery cell module, the extension drive 104 adjusts the support 103 to extend out of the receiving slot 102, so that the support 103 supports the strapping 83 and prevents the strapping 83 from falling off; when the clamping part 31 and the extrusion part 91 stop extruding the end plate and the battery cell, the support 103 also moves with the extrusion part 91, so that the strapping 83 is released from the support of the support 103. At the same time, the expansion of multiple battery cells and end plates tightens the strapping 83.

[0071] Based on the foregoing, refer to Figure 7As shown, the battery cell module consists of multiple battery cells and two end plates. Before the multiple battery cells and two end plates are squeezed and strapped with strap 83, the end plates need to be placed on both sides of a row of battery cells. In order to support the end plates and prevent them from falling off, and in conjunction with the protrusions on the end plates and the grooves on the extrusion part 91, the end plates will not fall off when they are attached to the extrusion part 91. In addition, the end plates and battery cells are precisely squeezed. Therefore, a structure for supporting the end plates needs to be installed on the extrusion part 91. For this purpose, a material stop linear driver 111 is provided on the side of the extrusion part 91 facing the machine 1. The material stop linear driver 111 is provided with a baffle 112. The material stop linear driver 111 is used to drive the baffle 112 to move above the strap 83.

[0072] Optionally, the linear actuator 111 is a cylinder.

[0073] Specifically, after the battery cell is placed on the spacer 81 on the support platform 2, the linear actuator 111 can drive the baffle 112 to move above the strapping 83. The part of the baffle 112 that supports the end plate is located between the strapping 83 and the battery cell. At this time, when the end plate is attached to the extrusion part 91, it can be supported by the baffle 112 and will not fall off. Furthermore, when the end plate is subsequently attached and extruded with the battery cell, the end plate will move with the extrusion part 91, and the extrusion part 91 will move with the positive clamping part 31, so that the end plate and the battery cell are precisely extruded together.

[0074] In addition, in order to detect whether the end plate is placed in the correct position on the baffle 112, an end plate detection grating is provided on the extrusion section 91. The end plate detection grating can be used to detect whether the baffle 112 is placed in the correct position.

[0075] In summary, by using the main linear driver 42 and the secondary linear driver 43 along the length of the machine tool 1, the two positive clamping parts 31 are driven to move towards each other. In conjunction with the extrusion part 91, extrusion force is applied to the battery cell and the end plates on both sides, so that the structural adhesive between the battery cells and between the battery cell and the end plates flows evenly to form an adhesive layer, which greatly improves the adhesive strength. At the same time, the positive elastic element 94 of the positive clamping part 31 and the extrusion part 91 can buffer the extrusion force and avoid damage to the battery cell. The secondary positive clamping part 31 is mechanically locked by the connecting block 122, the sliding mouth 123, the locking block 125, the locking slot 124 and the locking linear driver 121 to prevent displacement during extrusion and further ensure the stability of clamping and extrusion. Secondly, the two side clamping parts 32 in the width direction of the machine base 1 are driven to move towards or away from each other by the side linear module 52 on the bracket 51, which can clamp and align multiple battery cells at both ends along the width direction of the machine base 1; in the direction perpendicular to the table surface of the machine base 1, the downward linear driver 41 drives the downward clamping part 33 to move down, and in conjunction with the buffer plate 71, presses the top of the battery cell to achieve vertical alignment of the two ends of the battery cell. In addition, the telescopic rod 72, the limiting plate 73 and the downward elastic element 74 of the buffer plate 71 can buffer the downward pressure to avoid damage to the battery cell, while increasing the contact area to make the pressure uniform. The spacer 81 of the support platform 2 can hold battery cells, and its end slot 82 is used to pre-place annular strapping 83. The side strip 832 of the strapping 83 protrudes from the outside of the spacer 81 for easy handling. After multiple battery cells and two end plates are fully compressed and aligned, the strapping 83 can be removed from the slot 82 and inserted into the battery cell module. At the same time, another strapping 83 can be stacked to achieve vertical separation and fixation. The compression part 91 includes a connector 101, a receiving groove 102, a support 103, and a telescopic drive 1. 04. The extension length of the support member 103 can be adjusted before the pressure of the positive clamping part 31 is released to support the strapping strap 83. After the pressure of the positive clamping part 31 is released and there is slight slack between the multiple battery cells and the end plate after the pressure is lost, the support member 103 moves with the extrusion part 91 and adjusts the support member 103 to retract into the receiving groove 102 of the connector 101, releasing the support of the support member 103, so that the strapping strap 83 is tightened, and the battery cells are tightly bundled into a rigid module to prevent the battery cells from shifting due to vibration or collision.

[0076] In the description of this specification, the references to terms such as "embodiment," "one implementation," "some implementations," "illustrative implementation," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described implementation or example is included in at least one implementation or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same implementation or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more implementations or examples.

[0077] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of this application without creative effort, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A battery module extrusion device, characterized in that, include: Machine (1); Two positive clamping parts (31) are slidably mounted on the table surface of the machine tool (1) along the length direction of the machine tool (1). A positive drive assembly (13) for driving the positive clamping parts (31) to move is provided on the machine tool (1). Support platform (2), the support platform (2) is disposed on the table surface of the machine tool (1), and the support platform (2) is located between the two positive clamping parts (31), the support platform (2) is used to place a single row of battery cells; Side clamping part (32), there are two side clamping parts (32) and they are installed on both sides of the machine base (1) along the width direction of the machine base (1). The machine base (1) is provided with a side drive assembly (14) for driving the side clamping parts (32) to move. The two side clamping parts (32) have a clamping state and a loosening state. The downward clamping part (33) is installed in a non-direct contact manner on the side opposite to the side clamping part (32) and the support platform (2), and a downward linear actuator (41) is installed between the downward clamping part (33) and the side clamping part (32). The positive drive assembly (13) includes a main linear driver (42) and a secondary linear driver (43); the main linear driver (42) and the secondary linear driver (43) are respectively disposed at both ends of the table surface of the machine tool (1) along the length direction; the main linear driver (42) is connected to one of the positive clamping parts (31), and the secondary linear driver (43) is connected to the other positive clamping part (31); The positive clamping part (31) connected to the secondary linear actuator (43) is provided with a positioning linear actuator (121). The positive clamping part (31) connected to the secondary linear actuator (43) is provided with a connecting block (122) on the side facing the machine table (1). The connecting block (122) has a sliding opening (123) on the side facing the machine table (1). The table surface of the machine table (1) has a bayonet (124). The sliding opening (123) is slidably connected to a locking block (125) extending into the bayonet (124). The locking block (125) is connected to the positioning linear actuator (121). The positioning linear actuator (121) is used to drive the locking block (125) to move along a direction perpendicular to the table surface of the machine table (1). The secondary linear actuator (43) is connected to the positive clamping part (31) through the connecting block (122).

2. The battery module extrusion device according to claim 1, characterized in that, The table surface of the machine tool (1) is provided with slide rails (61) on both sides along the length direction, and the two positive clamping parts (31) are provided with sliders (62) that are slidably connected to the two slide rails (61).

3. The battery module extrusion device according to claim 1, characterized in that, The side drive assembly (14) includes a bracket (51) and a side linear module (52). There are two brackets (51) which are not in direct contact and are installed on both sides of the machine tool (1) along the width direction. The side linear module (52) is installed between the bracket (51) and the side clamping part (32) on the same side.

4. The battery module extrusion device according to claim 1, characterized in that, A telescopic rod (72) is slidably passed through the downward clamping part (33). One end of the telescopic rod (72) is provided with a buffer plate (71), and the other end is provided with a limit plate (73). The buffer plate (71) is located between the support platform (2) and the downward clamping part (33), and a downward elastic element (74) is installed between the buffer plate (71) and the downward clamping part (33).

5. The battery module extrusion device according to claim 1, characterized in that, The support platform (2) has a spacer (81) on the side away from the machine platform (1). The spacer (81) is a strip-shaped body extending along the length direction of the machine platform (1). The spacer (81) has a slot (82) at one end along the length direction of the machine platform (1). A strapping band (83) is placed on the side of the support platform (2) away from the machine platform (1). The strapping band (83) is looped and one of its front side bands (831) is inserted into the slot (82) at one end of the spacer (81) to fit the strapping band (83) onto a section of the spacer (81). The two side bands (832) of the strapping band (83) are located on both sides of the spacer (81) along the width direction of the machine platform (1).

6. The battery module extrusion device according to claim 5, characterized in that, A squeezing part (91) is provided between the positive clamping part (31) and the support platform (2). The squeezing part (91) is provided with a buffer rod (92) that slides through the positive clamping part (31). One end of the buffer rod (92) that slides through the positive clamping part (31) is provided with an anti-detachment member (93). The anti-detachment member (93) is restricted by the positive clamping part (31) so that the buffer rod (92) cannot detach from the positive clamping part (31). A positive elastic member (94) is provided between the positive clamping part (31) and the squeezing part (91).

7. A battery module extrusion device according to claim 6, characterized in that, The extrusion section (91) is provided with a connector (101) on the side facing the machine base (1). The connector (101) is provided with a receiving groove (102) on the side facing the support platform (2). A support member (103) extending to the outside of the opening of the receiving groove (102) is slidably connected inside the receiving groove (102). A telescopic drive member (104) is provided between the connector (101) and the support member (103). The telescopic drive member (104) is used to adjust the length of the support member (103) extending out of the receiving groove (102).

8. A battery module extrusion device according to claim 6, characterized in that, The extrusion section (91) is provided with a material blocking linear driver (111) on the side facing the machine base (1). The material blocking linear driver (111) is provided with a baffle (112). The material blocking linear driver (111) is used to drive the baffle (112) to move above the strapping tape (83).

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