Cylindrical battery module assembly tooling

Abstract

The present disclosure relates to a cylindrical battery module assembly tool, comprising a base and at least two positioning structures arranged on the base; the at least two positioning structures are arranged side by side along a first direction, and each positioning structure comprises a plurality of positioning grooves for placing cylindrical battery cells, the positioning grooves are used for positioning the cylindrical battery cells, the plurality of positioning grooves of each positioning structure are arranged spaced apart along a second direction perpendicular to the first direction, and one positioning groove corresponds to one cylindrical battery cell. In this way, each cylindrical battery cell has a preset position on the base, and each positioning groove can limit the cylindrical battery cell in it during assembly, that is, the position of each cylindrical battery cell column on the base is relatively fixed, the position accuracy of each cylindrical battery cell column is improved, there is no misalignment phenomenon between adjacent two cylindrical battery cell columns in the second direction, the position accuracy is high, the consistency and production quality of the assembly are improved, subsequent assembly is facilitated, and the production efficiency is improved.

Description

Technical Field

[0001] This disclosure relates to the field of battery assembly technology, and in particular to a tooling for assembling cylindrical battery modules. Background Technology

[0002] Cylindrical lithium-ion battery modules possess advantages such as high capacity, high output voltage, good discharge cycle performance, and safe operation, leading to their widespread application in the new energy vehicle sector. A cylindrical battery module typically comprises multiple cell rows arranged side-by-side along a first direction. Each cell row includes multiple cylindrical cells, which are then stacked sequentially along a second direction, perpendicular to each other. When assembling a cylindrical battery module, multiple cylindrical cells are typically first stacked together along the second direction to form cell rows, and then these cell rows are sequentially arranged side-by-side along the first direction and stacked into a group to form the cylindrical battery module.

[0003] However, in related technologies, the positional accuracy between two adjacent cell rows is low during the assembly process, resulting in poor consistency and production quality of cylindrical battery modules, and subsequent assembly difficulties. Summary of the Invention

[0004] To address the aforementioned technical issues, this disclosure provides a cylindrical battery module assembly fixture.

[0005] This disclosure provides a cylindrical battery module assembly fixture, including a base and at least two positioning structures disposed on the base;

[0006] At least two of the positioning structures are arranged side by side along a first direction, and each positioning structure includes multiple positioning slots for placing cylindrical cells. The positioning slots are used to position the cylindrical cells. The multiple positioning slots of each positioning structure are respectively arranged at intervals along a second direction perpendicular to the first direction, and one positioning slot corresponds to one cylindrical cell.

[0007] Optionally, at least a portion of the groove wall of each of the positioning grooves is shaped to match the outer contour of the cylindrical battery cell.

[0008] Optionally, in two adjacent positioning structures, the positioning groove of at least one positioning structure has a U-shaped cross-section cut by a plane perpendicular to a third direction, and the size of the positioning groove in the first direction is larger than the opening size in the second direction, wherein the third direction is perpendicular to both the first and second directions.

[0009] Optionally, when there are at least three positioning structures, the radial cross-section of the positioning groove of the positioning structure located in the middle is a circular hole, and the cross-section of the positioning grooves of the positioning structures located on both sides, when cut by a plane perpendicular to the third direction, is U-shaped. Furthermore, the dimension of the positioning groove in the first direction is greater than the dimension in the second direction, and the third direction is perpendicular to both the first and second directions.

[0010] Optionally, in two adjacent positioning structures located on both sides, the positioning groove of one positioning structure is connected to at least one of the two adjacent positioning grooves in the other positioning structure.

[0011] Optionally, the positioning slots of two adjacent positioning structures are staggered along the second direction.

[0012] Optionally, in two adjacent positioning structures, the positioning slot of one positioning structure is connected to at least one of the two adjacent positioning slots in the other positioning structure.

[0013] Optionally, all the positioning grooves of the positioning structures have a sealing groove bottom, and the sealing groove bottoms of all the positioning grooves are coplanar.

[0014] Optionally, the cylindrical battery module assembly fixture also includes two side plates movably connected to the base;

[0015] The two side plates are arranged along the second direction and are respectively located on opposite sides of all positioning structures. When the two side plates are respectively assembled with the base, the two side plates can respectively abut against the two opposite side walls of the cylindrical battery module.

[0016] Optionally, the shape of at least one of the side plates facing the positioning structure matches the shape of the corresponding sidewall of the cylindrical battery module.

[0017] Optionally, the base is provided with two fixing structures, one fixing structure corresponding to one side plate;

[0018] Each of the fixing structures includes two fixing seats, which are respectively disposed on both sides of all the positioning structures along the second direction. Each fixing seat is provided with a first connecting part, and each of the side plates is provided with a second connecting part. The side plates are detachably connected to the corresponding fixing structure through the first connecting part and the second connecting part.

[0019] Optionally, the cylindrical battery module assembly fixture further includes two positioning components and two drive structures disposed on the base;

[0020] The two positioning components are respectively disposed on both sides of all positioning structures along the second direction and are slidably connected to the base;

[0021] The two driving structures are respectively disposed on the side of the two positioning components that are opposite to all positioning structures. Each positioning component corresponds to one driving structure, and the driving structure is used to drive the corresponding positioning component to move along the second direction.

[0022] Optionally, the positioning component includes a positioning block, the bottom of the positioning block has a slider, and the base is provided with a slide rail that matches the slider. The positioning block is slidably connected to the base through the slider and the slide rail.

[0023] And / or, the drive structure includes a telescopic rod that extends and retracts along the second direction, the telescopic rod being connected to the positioning component to drive the corresponding positioning component to move in a direction away from or towards all positioning structures.

[0024] Optionally, the positioning component has a plurality of comb teeth extending toward all positioning structures on one side facing all positioning structures, the plurality of comb teeth being spaced apart along the first direction, and each comb tooth having a limiting groove at one end away from the positioning block for limiting the cooling plate between two adjacent positioning structures.

[0025] Optionally, the end of the comb teeth facing away from the positioning component has an adjacent first surface and a second surface, a portion of the groove of the limiting groove is opened on the first surface, and another portion of the groove of the limiting groove is opened on the second surface.

[0026] Optionally, the cylindrical battery module assembly fixture may further include a limiting component for limiting the cylindrical battery cell in the positioning groove (21);

[0027] The two ends of the limiting member are respectively connected to the base and fixed relative to the base, and the height of the bottom end of the limiting member is higher than the height of the top end of the positioning groove.

[0028] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0029] The cylindrical battery module assembly fixture disclosed herein comprises a base with at least two positioning structures arranged side-by-side along a first direction. Each positioning structure includes multiple positioning slots for placing cylindrical cells. These slots position the cylindrical cells placed within them. The multiple positioning slots in each positioning structure are spaced apart along a second direction perpendicular to the first direction. In practical use, one cylindrical cell is placed in each positioning slot. Since one cylindrical cell is placed in each positioning slot, each cylindrical cell has a preset position on the base. During assembly, each positioning slot can limit the position of the cylindrical cell within it. This ensures that all cylindrical cells in all positioning slots of each positioning structure are placed at their preset positions to form a column of cylindrical cells. The position of each column of cylindrical cells on the base is relatively fixed, thereby improving the positional accuracy of each column of cylindrical cells and, consequently, improving the positional accuracy between adjacent columns of cylindrical cells. In other words, there is no misalignment between adjacent columns of cylindrical cells in the second direction, i.e., the stacking direction of the columns. Based on this, the cylindrical battery modules assembled using the cylindrical battery module assembly tooling provided in this disclosure have high positional accuracy, which improves the consistency and production quality of the cylindrical battery module assembly, facilitates subsequent assembly, and improves production efficiency to a certain extent. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0031] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is an isometric view of the cylindrical battery module assembly fixture described in the embodiments of this disclosure;

[0033] Figure 2 This is a schematic diagram of the base plate of the cylindrical battery module assembly fixture described in the embodiments of this disclosure;

[0034] Figure 3 This is a partial schematic diagram of the cylindrical battery module assembly fixture described in the embodiments of this disclosure;

[0035] Figure 4 This is an isometric view of the positioning structure of the cylindrical battery module assembly fixture described in the embodiments of this disclosure;

[0036] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0037] Figure 6 This is a first usage diagram of the cylindrical battery module assembly fixture described in this embodiment of the present disclosure;

[0038] Figure 7 This is a second schematic diagram of the cylindrical battery module assembly fixture described in this embodiment of the present disclosure;

[0039] Figure 8 This is a third schematic diagram of the cylindrical battery module assembly fixture described in this embodiment.

[0040] The components are as follows: 1. Base; 11. Slide rail; 2. Positioning structure; 21. Positioning groove; 3. Side plate; 41. Fixing seat; 42. Connecting rod; 5. Drive structure; 61. Positioning block; 611. Mounting hole; 612. Comb teeth; 613. Limiting groove; 614. Mounting groove; 62. Slider; 7. Limiting component; 8. Cylindrical battery cell; 9. Cooling plate. Detailed Implementation

[0041] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0042] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0043] refer to Figures 1 to 8 As shown, this embodiment provides a cylindrical battery module assembly fixture (hereinafter referred to as the assembly fixture). The assembly fixture includes a base 1 and at least two positioning structures 2 disposed on the base 1. The at least two positioning structures 2 are arranged side by side along a first direction, and each positioning structure 2 includes multiple positioning slots 21 for placing cylindrical battery cells 8. The positioning slots are used to position the cylindrical battery cells 8 placed therein. The multiple positioning slots 21 of each positioning structure 2 are respectively arranged at intervals along a second direction perpendicular to the first direction, and one positioning slot 21 corresponds to one cylindrical battery cell 8.

[0044] It should be noted that the area defined by all the positioning slots 21 on the base 1 is the grouping area of ​​the cylindrical battery module. In other words, the area where all the positioning structures 2 are located defines the grouping area.

[0045] In other words, multiple positioning structures 2 are set on the base 1, and the multiple positioning structures 2 are along a first direction (such as the width direction of the base 1, see reference). Figure 1The positioning structures 2 are arranged side-by-side along the X-direction. Each positioning structure 2 includes multiple positioning slots 21 for positioning the cylindrical battery cells 8. One positioning slot 21 corresponds to one cylindrical battery cell 8. Furthermore, the multiple positioning slots 21 in each positioning structure 2 are respectively arranged along the second direction (e.g., the length of the rectangular base 1, see reference). Figure 1 The Y-axis spacing in the base 1 and all the positioning slots 21 on the base 1 together define the assembly area of ​​the cylindrical battery module.

[0046] In practical use, a cylindrical battery cell 8 is placed in each positioning slot 21 on the base 1. At this time, each positioning slot 21 plays a positioning role for the cylindrical battery cell 8 located therein. That is to say, each cylindrical battery cell 8 corresponds to a preset placement position on the base 1. In this way, the positional accuracy of each cylindrical battery cell 8 on the base 1 is relatively high, thereby making the positional accuracy of the cylindrical battery cell array formed by all the cylindrical battery cells 8 in each positioning structure 2 relatively high. That is, the positional accuracy of the cylindrical battery cell array formed by each positioning structure 2 is relatively high.

[0047] Since the positions of all positioning slots 21 in two adjacent positioning structures 2 are relatively fixed, the two cylindrical cells 8 formed in the two adjacent positioning structures 2 will not be misaligned in the second direction. This high positional accuracy improves the consistency and production quality of the cylindrical battery module assembly. It also facilitates subsequent assembly; for example, when assembling the busbar, the busbar can be easily connected to the positive and negative terminals of the corresponding cylindrical cells, making assembly convenient. Furthermore, using the assembly fixture of this embodiment to assemble the cylindrical cell module also improves production efficiency to a certain extent.

[0048] The assembly fixture provided in this embodiment is configured by setting a base 1 and arranging at least two positioning structures 2 side by side on the base 1 along a first direction. Each positioning structure 2 includes multiple positioning slots 21 for placing cylindrical battery cells 8. The multiple positioning slots 21 in each positioning structure 2 are spaced apart along a second direction perpendicular to the first direction. In specific use, one cylindrical battery cell 8 is placed in one positioning slot 21, and all the positioning slots 21 on the base 1 together define the assembly area of ​​the cylindrical battery module. Since each positioning slot 21 holds one cylindrical battery cell 8, meaning each cylindrical battery cell 8 has a preset position on the base 1, each positioning slot 21 can limit the position of the cylindrical battery cell 8 within it during assembly. This ensures that all the cylindrical battery cells 8 in all positioning slots 21 of each positioning structure 2 can be placed at their preset positions to form a column of cylindrical battery cells 8. Furthermore, the position of each column of cylindrical battery cells 8 on the base 1 is relatively fixed, thereby improving the positional accuracy of each column of cylindrical battery cells 8. This, in turn, improves the positional accuracy between adjacent columns of cylindrical battery cells 8. In other words, there is no misalignment between adjacent columns of cylindrical battery cells 8 in the second direction, i.e., the stacking direction of the columns of cylindrical battery cells 8. Based on this, the cylindrical battery module assembled using the assembly tooling provided in this disclosure has high positional accuracy, improving the consistency and production quality of the assembled cylindrical battery module, facilitating subsequent assembly, and to a certain extent improving production efficiency.

[0049] In some embodiments, reference Figure 1 and Figure 2 As shown, at least a portion of the groove wall of each positioning groove 21 is shaped to match the outer contour of the cylindrical battery cell 8. Specifically, along the circumference of the positioning groove 21, at least a portion of the groove wall of each positioning groove 21 is shaped to match the outer contour of the cylindrical battery cell 8. With this design, the positioning groove 21 fits well with the cylindrical battery cell 8 placed inside, further improving the positioning accuracy.

[0050] It should be noted that when the wall of the positioning groove 21 perfectly matches the outer contour of the cylindrical cell 8 along the circumference of the positioning groove 21, the radial section of the positioning groove 21 is a circular hole. When part of the wall of the positioning groove 21 matches the outer contour of the cylindrical cell 8 along the circumference of the positioning groove 21, the radial section of the positioning groove 21 is a waist-shaped groove.

[0051] In addition, all the positioning slots 21 located in the same positioning structure 2 have the same shape.

[0052] In some embodiments, reference Figure 2 As shown, in two adjacent positioning structures 2, the positioning groove 21 of at least one positioning structure 2 has a U-shaped cross-section cut by a plane perpendicular to the third direction, and the dimension of the positioning groove 21 in the first direction is larger than the dimension in the second direction. The third direction is perpendicular to the first and second directions, which facilitates assembly and helps to improve assembly efficiency.

[0053] The positioning groove 21 of at least one positioning structure 2 is U-shaped when cut by a plane perpendicular to the third direction, and the size of the positioning groove 21 in the first direction is greater than the size in the second direction. The third direction is perpendicular to the first and second directions. Specifically, it can be understood that the positioning groove 21 of at least one positioning structure 2 is not a circular groove, but an oblong groove with an opening size in the first direction greater than the opening size in the second direction.

[0054] In some implementations, in two adjacent positioning structures 2, the radial cross-section of the positioning groove 21 of one positioning structure 2 is a circular hole, and the radial cross-section of the positioning groove 21 of the other positioning structure 2 is a waist-shaped groove, and the opening size of the waist-shaped groove along the first direction is larger than the opening size along the second direction. That is to say, the shape of the groove wall of the positioning groove 21 of one positioning structure 2 matches the outer contour of the cylindrical cell 8, and part of the groove wall of the positioning groove 21 of the other positioning structure 2 matches the outer contour of the cylindrical cell 8.

[0055] In some other implementations, in two adjacent positioning structures 2, all positioning grooves 21 are waist-shaped grooves, and the opening size of all waist-shaped grooves along the first direction is larger than the opening size along the second direction.

[0056] In some embodiments, reference Figure 2 As shown, when there are at least three positioning structures 2, the radial section of the positioning groove 21 of the positioning structure 2 located in the middle is a circular hole, and the cross section of the positioning groove 21 of the positioning structures 2 located on both sides is U-shaped when cut by a plane perpendicular to the third direction. The dimension of the positioning groove 21 in the first direction is larger than the dimension in the second direction, and the third direction is perpendicular to the first direction and the second direction.

[0057] The positioning grooves 21 of the positioning structures 2 located on both sides have U-shaped cross-sections when cut by a plane perpendicular to the third direction. The dimension of the positioning groove 21 in the first direction is larger than its dimension in the second direction. The third direction is perpendicular to both the first and second directions. Specifically, this can be understood as the radial section of the positioning grooves 21 of the positioning structures 2 located on both sides being a waist-shaped groove, with the opening size of the waist-shaped groove along the first direction being larger than its opening size along the second direction. With this design, during assembly, all positioning grooves in the central positioning structure 2 are first... Cylindrical cells 8 are placed in 21 to form a central row of 8 cylindrical cells; then, from one side of the central row of 8 cylindrical cells, the cylindrical cells 8 are sequentially placed into the positioning structure 2 on that side from the inside out; then, from the other side of the central row of 8 cylindrical cells, the cylindrical cells 8 are sequentially placed into the positioning structure 2 on that side from the inside out. In this way, during the assembly process, the central row of 8 cylindrical cells has a positioning and limiting function for the cylindrical cells 8 on both sides, which facilitates assembly and further improves the positioning accuracy of each row of 8 cylindrical cells.

[0058] For example, the base 1 is provided with five positioning structures 2. The positioning grooves 21 of the middle positioning structure 2 are all circular holes, and the positioning grooves 21 of the four positioning structures 2 on both sides are all waist-shaped grooves. During assembly, firstly, eight rows of cylindrical battery cells are placed into the positioning groove 21 of the middle positioning structure 2 to form a middle row of eight cylindrical battery cells that can be used for positioning. Then, cylindrical battery cells 8 are placed from both sides of the middle row of eight cylindrical battery cells into the two positioning structures 2 on each side to form corresponding rows of eight cylindrical battery cells. This facilitates assembly and can further improve the positioning accuracy of each row of eight cylindrical battery cells.

[0059] In some embodiments, reference Figures 1 to 3 , Figures 6 to 8 As shown, in two adjacent positioning structures 2 located on both sides, the positioning groove 21 of one positioning structure 2 is connected to at least one of the two adjacent positioning grooves 21 in the other positioning structure 2.

[0060] In other words, in the two adjacent positioning structures 2 located on both sides, the positioning groove 21 of one positioning structure 2 is connected to one or both of the two adjacent positioning grooves 21 in the other positioning structure 2. With this design, after placing the cylindrical battery cell 8 into the waist-shaped grooves on both sides, the corresponding cylindrical battery cell 8 can be moved along the first direction towards the column of cylindrical battery cells 8 near the center, facilitating assembly. Simultaneously, more positioning structures 2 can be set on the base 1 within the same space, allowing for the assembly of larger cylindrical battery modules, which helps improve the storage capacity of the cylindrical battery module and increases production efficiency. Furthermore, the positioning structures 2 located on both sides are more compact on the base 1, resulting in higher space utilization.

[0061] In some embodiments, reference Figures 1 to 3 , Figures 6 to 8 As shown, the positioning slots 21 of two adjacent positioning structures 2 are staggered along the second direction. With this design, more positioning structures 2 can be set on the base 1 in the same space, so that more cylindrical cells 8 can be arranged, resulting in higher energy density of the assembled cylindrical battery module.

[0062] For example, in two adjacent positioning structures 2, the positioning groove 21 of one positioning structure 2 is connected to at least one of the two adjacent positioning grooves 21 in the other positioning structure 2, which facilitates assembly. At the same time, more positioning structures can be set in the same space, so that larger cylindrical cell modules can be assembled, resulting in higher space utilization.

[0063] In some embodiments, all positioning structures 2 have a sealing groove bottom, and the sealing groove bottoms of all positioning grooves are coplanar. That is, the groove depth of all positioning structures 2 is less than the thickness of the base 1, and the groove bottoms of all positioning grooves 21 are coplanar. In other words, the positioning grooves 21 on the base 1 are blind grooves. Thus, under the same structural conditions, the base 1 has higher structural strength and better load-bearing performance.

[0064] In practice, the bottom of all the positioning grooves 21 on the base 1 is on the same plane, that is, all the positioning grooves 21 have the same depth. This makes the assembled cylindrical battery module more aesthetically pleasing, with higher molding quality, and easier for subsequent assembly.

[0065] In some embodiments, participate Figure 1 , Figures 6 to 7 As shown, the cylindrical battery module assembly fixture also includes two side plates 3 movably connected to the base 1. The two side plates 3 are arranged along the second direction and are respectively located on opposite sides of the assembly area. That is, the two side plates 3 arranged along the second direction are respectively located on opposite sides of the assembly area along the first direction. When the two side plates 3 are respectively assembled with the base 1, the two side plates 3 abut against the two opposite side walls of the cylindrical battery module.

[0066] In practice, after placing the cylindrical battery cell 8 into all the positioning structures 2, the two side plates 3 are connected to the base 1 respectively. After the two side plates 3 are connected to the base 1, the two side plates 3 abut against the two opposite side walls of the cylindrical battery module, so that the two side plates 3 can provide a pre-tightening force with a preset pressure to the cylindrical battery module.

[0067] It should be noted that the two opposing sidewalls of the cylindrical battery module, that is, the opposite sides of the two outermost rows of cylindrical cells in the first direction, in other words, the two opposing sidewalls of the cylindrical battery module are respectively: the side of the outermost cylindrical cell row on one side of the cylindrical battery module that faces away from the packing area in the first direction, and the side of the outermost cylindrical cell row on the other side of the cylindrical battery module that faces away from the packing area.

[0068] For specific implementation, refer to Figures 1 to 8 As shown, two side plates 3 are respectively disposed on both sides of the cylindrical battery module along the first direction. Specifically, each side of the cylindrical battery module has a cooling plate 9, and the two side plates 3 can respectively abut against the side of the cooling plates 9 away from the cylindrical cell 8.

[0069] Among them, the cooling plate 9 can be, for example, a liquid cooling plate.

[0070] In some embodiments, reference Figures 1 to 8As shown, the shape of at least one side plate 3 facing the assembly area matches the shape of the corresponding side wall (e.g., cooling plate 9) of the cylindrical battery module. With this design, the side plate 3 fits better with the corresponding cooling plate 9, which facilitates the provision of pre-tightening force to the cylindrical cells 8 rows and makes assembly easier.

[0071] In practice, the shape of one of the side plates 3 facing the grouping area can match the shape of the corresponding cooling plate 9, or the shape of both side plates 3 facing the grouping area can match the shape of the corresponding cooling plate 9. The choice can be made arbitrarily according to the specific operating conditions.

[0072] In some embodiments, reference Figure 1 and Figure 2 As shown, the base 1 is provided with two fixing structures, one fixing structure corresponds to one side plate 3; each fixing structure includes two fixing seats 41, the two fixing seats 41 of each fixing structure are respectively arranged on both sides of the grouping area along the second direction, each fixing seat 41 is provided with a first connecting part, and each side plate 3 is provided with a second connecting part, and the side plate 3 is detachably connected to the corresponding fixing structure through the first connecting part and the second connecting part.

[0073] In some implementations, the first connecting part may include a connecting rod 42, at least a portion of which has external threads on its outer wall. The second connecting part may include an assembly hole through which the connecting rod 42 passes and an internally threaded fastener that can be screwed onto the connecting rod 42. When each side plate 3 is assembled with its corresponding fixing structure, the internally threaded fastener stops on the side of the side plate opposite to the fixing seat 41.

[0074] In practice, each side plate 3 is connected to two corresponding fixed seats 41 at both ends. Specifically, each side plate 3 has an assembly hole at both ends, with one assembly hole corresponding to one fixed seat 41. The two assembly holes of each side plate 3 are respectively inserted into the connecting rods 42 on the two fixed seats 41 and connected together by external threaded fasteners.

[0075] In other implementations, the side panel 3 can be connected to the corresponding fixed structure by means of a snap-fit ​​connection.

[0076] In practice, the fixing seat 41 can be integrally formed with the base 1, resulting in high structural strength. Of course, the fixing seat 41 can also be connected to the base 1 by fasteners.

[0077] In some embodiments, the cylindrical battery module assembly fixture further includes two positioning components and two driving structures 5 disposed on the base 1; the two positioning components are disposed on both sides of the assembly area along the second direction and are slidably connected to the base 1 respectively; the two driving structures 5 are disposed on the side of the two positioning components away from the assembly area respectively; one positioning component corresponds to one driving structure 5; the driving structure 5 is used to drive the corresponding positioning component to move along the second direction, that is, to move in the direction away from or close to the assembly area.

[0078] It should be noted that the two positioning components are mainly used to position the cooling plates 9 in the cylindrical battery module. Specifically, the two ends of the cooling plates 9 abut against the side of the two positioning components facing the assembly area. In this way, when the two side plates 3 apply a pre-tightening force to the rows of cylindrical cells 8, the position of each cooling plate 9 is relatively fixed, thereby making the gap between the cooling plate 9 and the rows of cylindrical cells 8 located on both sides of it uniform. This ensures that the adhesive layer thickness between the cooling plate 9 and the two adjacent rows of cylindrical cells 8 is within a preset range and that the adhesive layer is relatively uniform, which helps to enhance the connection strength between the cooling plate 9 and the two adjacent rows of cylindrical cells 8.

[0079] In a specific implementation, the positioning component includes a positioning block 61, a slider 62 at the bottom of the positioning block 61, and a slide rail 11 that matches the slider 62 on the base 1. The positioning block 61 is slidably connected to the base 1 through the slider 62 and the slide rail 11.

[0080] refer to Figures 1 to 3 , Figures 6 to 8 As shown, a slide rail 11 is provided on the base 1 along the second direction, and a slider 62 is provided on the bottom of the positioning block 61. The slide rail 11 and the slider 62 cooperate to allow the positioning block 61 to slide on the base 1.

[0081] Among them, reference Figure 4 As shown, the bottom of the positioning block 61 has a mounting groove 614 for mounting the slider 62. The slider 62 is provided with a first connecting hole at the position corresponding to the mounting groove 614. The slider 62 is provided with a second connecting hole that matches the first connecting hole. The slider 62 is detachably connected to the positioning block 61 by fasteners passing through the first connecting hole and the second connecting hole, which facilitates assembly and replacement.

[0082] In addition, the slide rail 11 can be integrally formed with the base 1, resulting in good overall integrity. Of course, the slide rail 11 can also be connected to the base 1 by fasteners.

[0083] In some embodiments, the drive structure 5 includes a telescopic rod that extends and retracts along a second direction. The telescopic rod is connected to a positioning component to drive the corresponding positioning component to move in a direction away from or towards the grouping area.

[0084] For example, the side of the positioning component facing away from the grouping area has a mounting hole 611, and at least a portion of the telescopic rod passes through the mounting hole 611 of the corresponding positioning component and is fixed relative to the corresponding positioning component. The telescopic rod can extend or retract in the direction of approaching or moving away from the grouping area.

[0085] Among them, the driving structure 5 can be, for example, a clamp.

[0086] For example, refer to Figures 1 to 4 As shown, the side of the positioning block 61 facing away from the grouping area has a mounting hole 611. The drive rod of the clamp passes through the mounting hole 611 and is fixed relative to the positioning block 61, so that the clamp can drive the positioning block 61 to move toward or away from the grouping area.

[0087] During assembly, the clamps move the positioning blocks 61 toward the grouping area so that the two ends of the cooling plate 9 abut against the sides of the two positioning blocks 61 facing the grouping area.

[0088] When assembly is complete, the clamps move the positioning blocks 61 away from the assembly area so that the two ends of the cooling plate 9 are separated from the two positioning blocks 61, making it easier to disassemble the formed cylindrical cell 8 module.

[0089] In practice, the clamps are detachably connected to the base 1 via fasteners, facilitating conversion and replacement.

[0090] In some embodiments, reference Figures 1 to 8 As shown, the positioning component has a plurality of comb teeth 612 extending toward the grouping area on the side facing the grouping area. The plurality of comb teeth 612 are spaced apart along the first direction, and each comb tooth 612 has a limiting groove 613 at the end facing away from the positioning block 61 for limiting the cooling plate 9 between two adjacent positioning components.

[0091] In other words, each positioning block 61 has multiple comb teeth 612 on the side facing the grouping area. The multiple comb teeth 612 on each positioning block 61 are spaced apart along the first direction, and each comb tooth 612 has a limiting groove 613 at the end opposite to the corresponding positioning block 61. In actual use, the two ends of the cooling plate 9 abut against the limiting groove 613 respectively, which is convenient for assembly, accurate and firm in limiting, and can further improve the positional accuracy of the cylindrical cells 8 rows.

[0092] For specific implementation, refer to Figure 4 and Figure 5 As shown, one end of the comb tooth 612 away from the positioning component has an adjacent first surface and a second surface, a portion of the groove of the limiting groove 613 is opened on the first surface, and another portion of the groove of the limiting groove 613 is opened on the second surface.

[0093] In other words, the limiting groove 613 on each comb tooth 612 is respectively opened at the joint of the two end faces of the corresponding comb tooth 612, which makes it easy for the liquid cooler to enter or move out of the limiting groove 613, making assembly and disassembly convenient and helping to improve work efficiency.

[0094] In some embodiments, reference Figure 1 , Figures 6 to 8 As shown, the cylindrical battery module assembly fixture also includes a limiting member 7 for limiting the cylindrical cell 8 in the positioning groove 21; the two ends of the limiting member 7 are respectively connected to the base 1 and fixed relative to the base 1, and the bottom end of the limiting member 7 is at a height higher than the top end of the positioning groove 21, and the top end of the limiting member 7 is at a height lower than the top end of the cylindrical cell 8.

[0095] During assembly, the first row of cylindrical cells 8 is placed into the positioning structure 2 closest to the limiting member 7 first. Then, the limiting member 7 is connected to the positioning structure 2. Then, along the second direction away from the first row of cylindrical cells 8, the cooling plate 9 and the second row of cylindrical cells 8 are placed in sequence on the side of the first row of cylindrical cells 8 away from the limiting member 7. At this time, while the cooling plate 9 and the second row of cylindrical cells 8 are placed, the limiting member 7 can prevent the first row of cylindrical cells 8 from tilting or falling over, which helps to improve assembly efficiency.

[0096] Among them, the limiting component 7 can be, for example, a limiting rod.

[0097] When using the assembly tooling of this embodiment, Figures 1 to 8Taking this as an example, the steps are as follows: First, cylindrical cells 8 are placed in the middle positioning structure 2 to form the first column of 8 cylindrical cells; second, the corresponding positioning blocks 61 are driven by two driving structures 5 to move towards the grouping area to a preset position; third, the limiting member 7 is connected to the two positioning blocks 61; fourth, on one side of the first column of 8 cylindrical cells, a cooling plate 9, a second column of 8 cylindrical cells, a cooling plate 9, a third column of 8 cylindrical cells, and a cooling plate 9 are placed in sequence; fifth, a side plate 3 is connected to one side of the base 1; sixth, the limiting member 7 is removed; seventh, ... On the other side of the first row of 8 cylindrical cells, place the cooling plate 9, the fourth row of 8 cylindrical cells, the cooling plate 9, the fifth row of 8 cylindrical cells, and the cooling plate 9 in sequence. In the eighth step, connect another side plate 3 to the other side of the base 1. In the ninth step, connect the two side plates 3 into place, so that the two side plates 3 abut against the cooling plates 9 on both sides, providing a pre-tightening force with a preset pressure to the cylindrical battery module. This ensures that each cooling plate 9 achieves a designed fit with the adjacent row of 8 cylindrical cells, allowing the five rows of 8 cylindrical cells and their corresponding cooling plates 9 to bond together to form a complete cylindrical battery module. In the tenth step, remove the two side plates 3, and drive the corresponding positioning blocks 61 away from the assembly area using two drive structures 5. At this point, the formed cylindrical battery module can be removed.

[0098] It should be noted that both sides of the middle cooling plate 9 are coated with an adhesive layer, and the inner walls of the two cooling plates 9 on both sides are also coated with an adhesive layer. Furthermore, there is no strict order in which steps one and two are performed.

[0099] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0100] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cylindrical battery module assembly fixture, characterized in that, Includes a base and at least two positioning structures disposed on the base; At least two of the positioning structures are arranged side by side along a first direction, and each of the positioning structures includes a plurality of positioning slots for placing cylindrical cells. The positioning slots are used to position the cylindrical cells. The plurality of positioning slots of each positioning structure are respectively arranged at intervals along a second direction perpendicular to the first direction, and one positioning slot corresponds to one cylindrical cell. In two adjacent positioning structures, the positioning groove of at least one positioning structure has a U-shaped cross-section cut by a plane perpendicular to the third direction, and the size of the positioning groove in the first direction is greater than the size in the second direction, wherein the third direction is perpendicular to the first direction and the second direction.

2. The cylindrical battery module assembly fixture according to claim 1, characterized in that, At least a portion of the groove wall of each of the positioning grooves is shaped to match the outer contour of the cylindrical battery cell.

3. The cylindrical battery module assembly fixture according to claim 2, characterized in that, When there are at least three positioning structures, the radial cross-section of the positioning groove of the positioning structure located in the middle is a circular hole, and the cross-section of the positioning grooves of the positioning structures located on both sides is U-shaped when cut by a plane perpendicular to the third direction. The size of the positioning groove in the first direction is greater than the size in the second direction, and the third direction is perpendicular to the first direction and the second direction.

4. The cylindrical battery module assembly fixture according to claim 3, characterized in that, In two adjacent positioning structures located on both sides, the positioning groove of one positioning structure is connected to at least one of the two adjacent positioning grooves in the other positioning structure.

5. The cylindrical battery module assembly fixture according to claim 1, characterized in that, The positioning grooves of two adjacent positioning structures are staggered along the second direction.

6. The cylindrical battery module assembly fixture according to claim 5, characterized in that, In two adjacent positioning structures, the positioning slot of one positioning structure is connected to at least one of the two adjacent positioning slots in the other positioning structure.

7. The cylindrical battery module assembly fixture according to claim 1, characterized in that, All the positioning slots of the positioning structures have a sealing slot bottom, and the sealing slot bottoms of all the positioning slots are coplanar.

8. The cylindrical battery module assembly fixture according to any one of claims 1 to 7, characterized in that, The cylindrical battery module assembly fixture also includes two side plates that are movably connected to the base. The two side plates are arranged along the second direction and are respectively located on opposite sides of all positioning structures. When the two side plates are respectively assembled with the base, the two side plates can respectively abut against the two opposite side walls of the cylindrical battery module.

9. The cylindrical battery module assembly fixture according to claim 8, characterized in that, The shape of at least one of the side plates facing the positioning structure matches the shape of the corresponding sidewall of the cylindrical battery module.

10. The cylindrical battery module assembly fixture according to claim 8, characterized in that, The base is provided with two fixing structures, one fixing structure corresponding to one side plate; Each of the fixing structures includes two fixing seats, which are respectively disposed on both sides of all the positioning structures along the second direction. Each fixing seat is provided with a first connecting part, and each side plate is provided with a second connecting part. The side plate is detachably connected to the corresponding fixing structure through the first connecting part and the second connecting part.

11. The cylindrical battery module assembly fixture according to any one of claims 1 to 7, characterized in that, The cylindrical battery module assembly fixture also includes two positioning components and two drive structures disposed on the base; The two positioning components are respectively disposed on both sides of all positioning structures along the second direction and are slidably connected to the base; The two driving structures are respectively disposed on the side of the two positioning components that are opposite to all positioning structures. Each positioning component corresponds to one driving structure, and the driving structure is used to drive the corresponding positioning component to move along the second direction.

12. The cylindrical battery module assembly fixture according to claim 11, characterized in that, The positioning component includes a positioning block, the bottom of which has a slider, and the base is provided with a slide rail that matches the slider. The positioning block is slidably connected to the base via the slider and the slide rail. And / or, the drive structure includes a telescopic rod that extends and retracts along the second direction, the telescopic rod being connected to the positioning component to drive the corresponding positioning component to move in a direction away from or towards all positioning structures.

13. The cylindrical battery module assembly fixture according to claim 11, characterized in that, The positioning component has a plurality of comb teeth extending toward all positioning structures on one side facing all positioning structures. The plurality of comb teeth are spaced apart along the first direction, and each comb tooth has a limiting groove at one end away from the positioning structure for limiting the cooling plate between two adjacent positioning structures.

14. The cylindrical battery module assembly fixture according to claim 13, characterized in that, The comb teeth have an adjacent first surface and a second surface at the end opposite to the positioning component. A portion of the groove of the limiting groove is opened on the first surface, and another portion of the groove of the limiting groove is opened on the second surface.

15. The cylindrical battery module assembly fixture according to any one of claims 1 to 7, characterized in that, The cylindrical battery module assembly fixture also includes a limiting component for limiting the cylindrical battery cells in the positioning groove. The two ends of the limiting member are respectively connected to the base and fixed relative to the base. The bottom end of the limiting member is at a higher height than the top end of the positioning groove.

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