Preparation device of battery module

Abstract

The utility model discloses a preparation device of a battery module, and relates to the technical field of battery module preparation. The preparation device of the battery module comprises a base, a supporting mechanism and a driving mechanism, the base is configured to fix the battery module, the battery module comprises a plurality of battery cell groups, and each battery cell group comprises two tabs arranged at an interval; the supporting mechanism comprises a support, a distance adjusting assembly and a plurality of supporting pieces, the distance adjusting assembly is arranged on the support, the supporting pieces are connected with the distance adjusting assembly, and the distance adjusting assembly is configured to adjust the distance between the supporting pieces at equal intervals; and the driving mechanism is configured to drive the bracket to move, so that the supporting piece can enter a space between the two tabs of the corresponding battery cell group to support the bending of the two tabs. The preparation device can roll the two laminated tabs under the support of the support piece, and ensures that the two tabs are welded after being attached, so that the welding quality is improved, and the performance of the battery module is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery module preparation, in particular to a battery module preparation device. Background Art

[0002] Lithium-ion battery technology has become increasingly mature and is therefore widely used in automotive power batteries. A battery module is a system in which several roughly rectangular cells are placed side by side in a fixed casing. The tabs of the cells are then passed through a busbar and bent so that they are stacked on the busbar. The stacked tabs are then rolled to fit together and then welded to the busbar.

[0003] However, the installation of busbars encroaches on the internal space of the battery module housing, reducing the module's energy density, resulting in low assembly efficiency and increased cell production costs. Prior art approaches often eliminate busbars from battery modules, instead welding directly to the tabs. However, since the tabs lack a supporting structure, roller pressing is impossible to ensure proper alignment of the stacked tabs, making it difficult to ensure tab welding quality and impacting battery module performance. Utility Model Content

[0004] The purpose of the utility model is to provide a battery module preparation device, which can roll-press two stacked tabs under the support of a support member to ensure that the two tabs are fitted together before welding, thereby improving the welding quality and ensuring the performance of the battery module.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A battery module manufacturing device, comprising:

[0007] A base is configured to fix a battery module, wherein the battery module includes a plurality of battery cell groups, and the battery cell group includes two tabs arranged at intervals;

[0008] A support mechanism includes a bracket, a spacing adjustment assembly, and a plurality of support members, wherein the spacing adjustment assembly is disposed on the bracket, the plurality of support members are connected to the spacing adjustment assembly, and the spacing adjustment assembly is configured to adjust the distance between the plurality of support members at equal intervals;

[0009] A driving mechanism is configured to drive the bracket to move so that the support member can enter between the two tabs of the corresponding battery cell group to support the bending of the two tabs.

[0010] Driven by the driving mechanism, multiple support members can enter between the two pole tabs of the corresponding battery cell group one by one to support the bending of the two pole tabs, so that the two stacked pole tabs can be rolled and welded, thereby improving the welding quality and ensuring the performance of the battery module.

[0011] As an optional solution for the preparation device of the above-mentioned battery module, the spacing adjustment assembly includes a plurality of cross members, the cross members include a first rod and a second rod pivoted by a rotating shaft, the support member is slidably connected to the bracket and connected to the rotating shaft, and the first rod and the second rod of the plurality of cross members are pivoted alternately in sequence.

[0012] The distances between the rotation axes of the multiple cross members change synchronously, thereby achieving equal spacing adjustment of the distances between the multiple support members.

[0013] As an optional solution for the above-mentioned battery module preparation device, the spacing adjustment assembly also includes two adjustment sliders, the rotating shafts of the two cross members located at both ends are pivotally connected to one adjustment slider respectively, and the two adjustment sliders are slidably arranged on the bracket to adjust the distance between the multiple support members.

[0014] When the two adjustment sliders are moved along the second direction to change the distance between the two adjustment sliders, the first rods and the second rods of the multiple cross members of the spacing adjustment assembly rotate relative to each other, thereby adjusting the distance between the multiple support members simply and quickly.

[0015] As an optional solution for the above-mentioned battery module preparation device, at least one of the adjustment sliders is provided with a first locking screw, which passes through the adjustment slider and is threadedly connected to the adjustment slider. The locking screw can abut the bracket to lock the adjustment slider.

[0016] The relative position between an adjustment slider and the bracket can be fixed by a first locking screw, so that the operator only needs to slide another adjustment slider, which simplifies the operation and improves the stability of the relative positions between multiple support members after adjustment.

[0017] As an optional solution to the above-mentioned battery module manufacturing device, the rotating shaft is a second locking screw, and the second locking screw passes through the first rod and the second rod and is threadedly connected to the support member.

[0018] After the operator adjusts the distance between multiple support members by sliding the adjustment slider, he can select several second locking screws for locking to avoid the first rod and the second rod of some cross members from still being able to rotate within a small range due to the existence of assembly gap, thereby further reducing the error and ensuring that multiple support members can be inserted one by one between the two pole ears of the corresponding battery cell group.

[0019] As an optional solution for the above-mentioned battery module preparation device, the cross piece also includes a buffer pad, which is sleeved on the second locking screw and located between the screw cap of the second locking screw and the first rod or between the screw cap of the second locking screw and the second rod.

[0020] The buffer pad has an anti-loosening effect, can avoid friction between the screw cap of the second locking screw and the first rod or between the screw cap of the second locking screw and the second rod, and improves the service life.

[0021] As an optional solution of the above-mentioned battery module preparation device, the bracket is provided with two guide rails spaced apart in the vertical direction, and the support member is slidably connected to the two guide rails.

[0022] The two guide rails can guide the support member from both sides of the rotating shaft to ensure that the connecting rod of the support member always remains in a vertical state, avoiding rotation and affecting sliding.

[0023] As an optional solution for the above-mentioned battery module preparation device, the driving mechanism includes a horizontal driving member, the output end of the horizontal driving member is connected to the bracket, and the horizontal driving member can drive the bracket to move in the horizontal direction so that the support member is inserted between the two pole ears of the corresponding battery cell group.

[0024] The horizontal driving member can drive the bracket to move in the horizontal direction so that the supporting member is inserted between the two tabs of the corresponding battery cell group.

[0025] As an optional solution for the preparation device of the above-mentioned battery module, the driving mechanism also includes a crossbeam, a first slider and a vertical driving member, the first slider is slidably set on the crossbeam, the vertical driving member is set on the first slider, the horizontal driving member is connected to the output end of the vertical driving member, and the sliding direction of the first slider is set at an angle to the driving direction of the horizontal driving member.

[0026] The first slider and the vertical driving member can drive the bracket to move so that the support member is aligned with the position between the two tabs of the corresponding battery cell group, ensuring that the support member can be inserted between the two tabs of the corresponding battery cell group.

[0027] As an optional solution for the preparation device of the above-mentioned battery module, the support member includes a detachably connected connecting rod and a support rod, the connecting rod is connected to the spacing adjustment assembly, the support rod extends in a horizontal direction, and the support rod can enter between the two pole tabs of the battery cell group to support the bending of the two pole tabs.

[0028] The connecting rod and the support rod are detachably connected to ensure that the support rods correspond to the battery cell group one by one, avoiding too many or too few support rods resulting in improper use.

[0029] Beneficial effects of the utility model:

[0030] The utility model provides a battery module manufacturing device. In the manufacturing device, a base can fix multiple battery cell groups of the battery module, and a support mechanism can adjust the distance between multiple support members at equal intervals through a spacing adjustment component, so that the multiple support members can correspond to multiple battery groups. Under the drive of the driving mechanism, the multiple support members are inserted one by one between two tabs of the corresponding battery cell group to support the bending of the two tabs, thereby enabling the rolling and welding operations of the two stacked tabs to ensure that the two tabs are aligned before welding, thereby improving the welding quality and ensuring the performance of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of a device for preparing a battery module provided by the present invention;

[0032] Figure 2 This is a schematic structural diagram of the battery pack provided by the utility model;

[0033] Figure 3 It is a structural schematic diagram of the support mechanism provided by the utility model;

[0034] Figure 4 It is a structural schematic diagram of the support member and the cross member provided by the utility model.

[0035] In the picture:

[0036] 100, battery module; 101, battery cell group; 102, battery cell; 103, tab;

[0037] 1. Base; 11. Plywood;

[0038] 2. Support mechanism; 21. Bracket; 22. Spacing adjustment assembly; 221. Cross member; 2211. First rod; 2212. Second rod; 2213. Rotating shaft; 23. Support member; 222. Adjustment slider; 223. First locking screw; 224. Guide rail; 225. Buffer member; 231. Connecting rod; 232. Support rod; 2321. Connecting section;

[0039] 3. Driving mechanism; 31. Crossbeam; 32. First slider; 33. Vertical driving member; 34. Second slider; 35. Horizontal driving member. DETAILED DESCRIPTION

[0040] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0042] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or removable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0043] Unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0044] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0045] Example 1

[0046] Lithium-ion battery technology has matured, leading to its widespread adoption as a power battery for vehicles. A power battery consists of a housing and several battery modules, which are electrically connected in series or parallel to provide power. A battery module consists of several roughly rectangular cells placed side by side within a fixed housing. The cell tabs are then passed through a busbar and bent, stacked on top of it. The stacked tabs are then rolled to align them, and then welded to the busbar.

[0047] like Figure 1 and Figure 2 As shown, for ease of description, the multiple battery cells 102 of the battery module 100 are divided into multiple battery cell groups 101 along the arrangement direction, and two adjacent battery cell groups 101 form a group of battery cell groups 101. The tabs 103 of the two battery cells 102 in each battery cell group 101 need to be welded together.

[0048] The battery cell 102 includes a positive tab and a negative tab. In some embodiments, both the positive tab and the negative tab extend from one end of the battery cell 102. In this case, the tabs 103 of the two battery cells 102 in each battery cell group 101 are located at the same end. As needed, the positive tab of one battery cell 102 can be welded to the negative tab of another battery cell 102, in which case the two battery cells 102 are connected in series. Alternatively, the positive tab of one battery cell 102 can be welded to the negative tab of another battery cell 102, in which case the two battery cells 102 are connected in parallel. In this case, the busbar of the battery module 100 is provided at the end with the tab 103.

[0049] In some embodiments, the positive and negative tabs of the battery cells 102 extend from opposite ends of the battery cells 102. In this case, each battery cell group 101 has two tabs 103 at one end and two tabs 103 at the other end. The two tabs 103 at the same end of the battery cell group 101 can be both positive, both negative, or one positive and one negative. In this case, busbars are required at both opposite ends of the battery module 100.

[0050] However, the busbars encroach on the internal space of the battery module 100 housing, reducing the energy density of the battery module 100, resulting in low assembly efficiency and increased production costs for the battery cells 102. Prior art methods have mostly eliminated the busbar structure from the battery module 100, instead directly welding the tabs 103. However, since the tabs 103 lack a supporting structure, they cannot be rolled to ensure proper alignment of the stacked tabs 103. This makes it difficult to ensure the quality of the tab 103 welding, impacting the performance of the battery module 100.

[0051] This embodiment is described by taking an example in which two tabs 103 are spaced apart at one end and two tabs 103 are spaced apart at the other end of each battery cell group 101 of the battery module 100 .

[0052] like Figure 1 and Figure 2 As shown, in order to solve the above problems, this embodiment provides a battery module preparation device, such as Figure 1 As shown, the preparation device includes a base 1, a support mechanism 2 and a drive mechanism 3. The base 1 is configured to fix the battery module 100. The support mechanism 2 includes a bracket 21, a spacing adjustment component 22 and a plurality of support members 23. The spacing adjustment component 22 is arranged on the bracket 21. The plurality of support members 23 are connected to the spacing adjustment component 22. The spacing adjustment component 22 is configured to adjust the distance between the plurality of support members 23 at equal intervals. The drive mechanism 3 is configured to drive the bracket 21 to move so that the support member 23 can enter between the two pole ears 103 of the corresponding battery cell group 101 to support the bending of the two pole ears 103.

[0053] In the preparation device, the base 1 can fix multiple battery cell groups 101 of the battery module 100, and the support mechanism 2 can adjust the distance between the multiple support members 23 through the spacing adjustment component 22, so that the multiple support members 23 can correspond to multiple battery groups, so that the preparation device can be suitable for the preparation of battery modules 100 with different battery cell 102 models. Under the drive of the driving mechanism 3, the multiple support members 23 enter one by one between the two pole ears 103 of the corresponding battery cell group 101 to support the bending of the two pole ears 103, so that the two stacked pole ears 103 can be rolled and welded.

[0054] Specifically, two clamping plates 11 are provided on the base 1, and the two clamping plates 11 are used to clamp and fix multiple battery cells 102 of the battery module 100, and the battery cells 102 will not contact the base 1 to ensure that the tabs 103 at the lower end of the battery module 100 will not be bent.

[0055] Since the support member 23 extends between the two tabs 103 of each battery cell group 101, the two stacked tabs 103 can be rolled under the support of the support member 23 to ensure that the two tabs 103 are fitted together before welding, thereby improving the welding quality and ensuring the performance of the battery module 100.

[0056] It is worth noting that the multiple battery cells 102 in the same battery module 100 are usually of the same model, so the distances between the tabs 103 of the multiple battery cells 102 located at the same end of the battery module 100 are equal, so the distances between the support members 23 inserted between the two battery cells 102 in each battery cell group 101 are also equal.

[0057] In this embodiment, after the tab 103 at one end of the battery module 100 is welded, the battery module 100 needs to be rotated 180° so as to weld the tab 103 at the other end of the battery module 100 .

[0058] In this embodiment, the spacing adjustment component 22 can adjust the distance between multiple support members 23 at equal intervals, so that when the operator adjusts the distance between the support members 23, he only needs to ensure that two adjacent support members 23 can be respectively inserted between the pole ears 103 of two adjacent groups of battery cell groups 101, which reduces the difficulty of adjustment and improves the adjustment efficiency.

[0059] like Figure 3 and Figure 4 As shown, the spacing adjustment assembly 22 includes multiple cross members 221, the cross member 221 includes a first rod 2211 and a second rod 2212 pivoted by a rotating shaft 2213, the support member 23 is slidably connected to the bracket 21 and connected to the rotating shaft 2213, and the first rod 2211 and the second rod 2212 of the multiple cross members 221 are pivoted alternately in sequence.

[0060] When the first rod 2211 and the second rod 2212 of the cross member 221 rotate relative to each other, the distance between the ends of the first rod 2211 and the second rod 2212 will change, thereby changing the position of the rotating shaft 2213. Since the first rod 2211 and the second rod 2212 of the multiple cross members 221 are pivotally connected alternately in sequence, the rotation action of the first rod 2211 and the second rod 2212 of the cross member 221 will be transmitted in sequence, so that the first rod 2211 and the second rod 2212 of the multiple cross members 221 of the spacing adjustment assembly 22 all rotate synchronously with respect to each other, and the rotation angle is the same, so the distance between the rotating shafts 2213 of the multiple cross members 221 changes synchronously, thereby realizing the equal spacing adjustment of the distance between the multiple support members 23.

[0061] Since both the first rod 2211 and the second rod 2212 have thickness, in order to prevent the cross member 221 from getting stuck, the first rod 2211 of each cross member 221 is located on the side of the second rod 2212 away from the bracket 21, or the first rod 2211 of each cross member 221 is located on the side of the second rod 2212 toward the bracket 21.

[0062] It is understood that when the distances between the multiple support members 23 are adjusted to the desired position, the drive mechanism 3 can drive the bracket 21 to move so that the support members 23 can enter between the two tabs 103 of the corresponding battery cell group 101. At this time, the drive mechanism 3 can drive the bracket 21 to move downward so that the support members 23 enter from above the two tabs 103 of the battery cell group 101, or it can drive the bracket 21 to move horizontally so that the support members 23 enter from the sides of the two tabs 103 of the battery cell group 101.

[0063] In this embodiment, in order to facilitate the support member 23 to withdraw from between the two tabs 103 after welding is completed, the driving mechanism 3 drives the bracket 21 to move horizontally. Figure 1 As shown, in order to achieve the above purpose, the driving mechanism 3 includes a horizontal driving member 35, the output end of the horizontal driving member 35 is connected to the bracket 21, and the horizontal driving member 35 can drive the bracket 21 to move in the horizontal direction so that the support member 23 is inserted between the two pole ears 103 of the corresponding battery cell group 101.

[0064] The horizontal driving member 35 may be a cylinder, a linear motor, a screw-nut driving structure or other linear driving structure, as long as it can drive the bracket 21 to move in a straight line.

[0065] like Figure 1 As shown, the driving mechanism 3 also includes a crossbeam 31, a first slider 32 and a vertical driving member 33. The first slider 32 is slidably set on the crossbeam 31, the vertical driving member 33 is set on the first slider 32, and the horizontal driving member 35 is connected to the output end of the vertical driving member 33. The sliding direction of the first slider 32 is set at an angle to the driving direction of the horizontal driving member 35.

[0066] The first slider 32 slides along the cross beam 31 to adjust the position of the bracket 21, so that the support member 23 can move to a position between the two pole ears 103 facing the corresponding battery cell group 101, and the vertical drive member 33 can drive the bracket 21 to move in the vertical direction so that the support member 23 can move to a height lower than the bent pole ear 103 to ensure that the support member 23 can support the pole ear 103 from below.

[0067] The vertical driving member 33 may be a cylinder, a linear motor, a screw-nut driving structure or other linear driving structure, as long as it can drive the bracket 21 to move in a straight line.

[0068] Furthermore, the driving mechanism 3 also includes a second slider 34, which is connected to the output end of the vertical driving member 33, the bracket 21 is slidingly connected to the vertical slider, and the horizontal driving member 35 is arranged on the second slider 34 and can drive the bracket 21 to move.

[0069] In this embodiment, the crossbeam 31 is a linear motor, and the first slider 32 is connected to the linear motor's mover. When adjusting the support members 23, the operator first adjusts the distance between adjacent support members 23. The linear motor then drives the first slider 32 to move the support member 23 to a position directly between the two tabs 103 of the corresponding battery cell group 101. The vertical drive member 33 then drives the bracket 21 vertically to a height below the bent tabs 103. The horizontal drive member 35 then drives the bracket 21 horizontally to insert the support member 23 between the two tabs 103 of the corresponding battery cell group 101.

[0070] It is understandable that different battery modules 100 have different numbers of battery cells 102, that is, the number of support members 23 may be inconsistent with the number of battery cell groups 101 of the battery module 100. If the number of support members 23 is less than the number of battery cell groups 101, it is impossible to weld the tabs 103 of all battery cell groups 101 at one time, which reduces efficiency; if the number of support members 23 exceeds the number of battery cell groups 101, the excess support members 23 will interfere with the structure of fixing the battery cell group 101, affecting normal use and possibly causing damage.

[0071] like Figure 4 As shown, to address the above issues, the support member 23 includes a detachably connected connecting rod 231 and a support rod 232. The connecting rod 231 is connected to the spacing adjustment assembly 22, and the support rod 232 extends horizontally. The support rod 232 can enter between the two tabs 103 of the battery cell group 101 to support the bending of the two tabs 103. The operator can select the number of support rods 232 to be installed based on the number of battery cell groups 101, thereby ensuring a one-to-one correspondence between support rods 232 and battery cell groups 101, avoiding excessive or insufficient support rods 232 that may cause malfunction.

[0072] In this embodiment, the support rod 232 and the connecting rod 231 are fixed by bolts for easy disassembly. In order to ensure the stability of the support rod 232, the support rod 232 and the connecting rod 231 are fixed by at least two bolts to prevent the support rod 232 from rotating and failing to effectively support the tab 103.

[0073] Specifically, a connecting step is provided at the bottom end of the support rod 232, and the end of the support rod 232 is bent upward to form a connecting section 2321. Two bolts pass through the connecting section 2321 and are threadedly connected to the support rod 232 to fix the connecting section 2321 to the bottom end of the support rod 232, and the connecting section 2321 abuts against the connecting step. The connecting step can position the connecting section 2321, which is convenient for alignment operations during installation and can ensure the accuracy of the height of the support rod 232, thereby ensuring that multiple support rods 232 are at the same height, thereby ensuring the consistency of the height of the tabs 103 of multiple groups of battery cell groups 101.

[0074] In some embodiments, the support rod 232 and the connecting rod 231 can also be fixed by other means, such as snap-fit ​​fixation, interference fit fixation, etc., as long as the support rod 232 and the connecting rod 231 can be connected and the disassembly between the two is convenient.

[0075] For ease of description, the arrangement direction of the multiple battery cells 102 of the battery module 100 is taken as the first direction (X direction in the figure), the beam 31 is arranged along the first direction, the first slider 32 is slidably arranged on the beam 31 along the first direction, and the bracket 21 is slidably arranged on the second slider 34 along the second direction (Y direction in the figure), so the first direction, the second direction and the vertical direction are arranged perpendicular to each other.

[0076] In this embodiment, the spacing adjustment assembly 22 further includes two adjustment sliders 222 , and the rotating shafts 2213 of the two cross members 221 at both ends are pivotally connected to an adjustment slider 222 respectively. The two adjustment sliders 222 are slidably arranged on the bracket 21 to adjust the distance between the multiple support members 23 .

[0077] When the two adjustment sliders 222 are moved along the second direction to change the distance between the two adjustment sliders 222, the first rod 2211 and the second rod 2212 of the multiple cross members 221 of the spacing adjustment assembly 22 rotate relative to each other, thereby realizing the adjustment of the distance between the multiple support members 23, which is simple and quick.

[0078] It is worth noting that, in the cross member 221 connected to the adjusting slider 222, the first rod 2211 and the second rod 2212 are both half rods, that is, the length of the first rod 2211 and the second rod 2212 of the cross member 221 is half of the length of the first rod 2211 and the second rod 2212 of other cross members 221, and the first rod 2211 and the second rod 2212 of the cross member 221 are pivotally connected to the rotating shaft 2213 through the ends.

[0079] like Figure 3As shown, at least one adjustment slider 222 is provided with a first locking screw 223. The locking screw is disposed through the adjustment slider 222 and is threadedly connected to the adjustment slider 222. The locking screw can abut the bracket 21 to lock the adjustment slider 222. When adjusting the distance between the multiple support members 23, the relative position between one adjustment slider 222 and the bracket 21 can be fixed by a first locking screw 223, so that the operator only needs to slide another adjustment slider 222, which simplifies the operation and improves the stability of the relative positions between the multiple support members 23 after adjustment.

[0080] Furthermore, each adjusting slider 222 is provided with a first locking screw 223. When the operator adjusts the distance between the multiple support members 23, he can first fix the relative position between an adjusting slider 222 and the bracket 21 by a first locking screw 223, and then slide another adjusting slider 222. When the distance between the multiple support members 23 matches the multiple battery cell groups 101, the adjusting slider 222 is locked by the first locking screw 223 of the adjusting slider 222, thereby ensuring that the distance between the multiple support members 23 will not change when the multiple support members 23 move with the bracket 21.

[0081] In this embodiment, the rotating shaft 2213 is a second locking screw that passes through the first rod 2211 and the second rod 2212 and is threadedly connected to the support member 23. In other words, by turning the second locking screw, the operator can lock the first rod 2211 and the second rod 2212 to the support member 23, thereby preventing relative rotation between the first rod 2211 and the second rod 2212. After the operator adjusts the distance between the multiple support members 23 by sliding the adjustment slider 222, they can select several second locking screws to tighten. This prevents the first rod 2211 and the second rod 2212 of some cross members 221 from rotating within a small range due to assembly gaps, thereby further reducing errors and ensuring that the multiple support members 23 can be inserted one by one between the two tabs 103 of the corresponding battery cell group 101.

[0082] It can be understood that the rotating shaft 2213 of the cross piece 221 connected to the adjusting slider 222 is also a second locking screw. The operator can use the second locking screw to lock the cross piece 221 and the adjusting slider 222, so that the second slider 34 cannot continue to slide, thereby saving a first locking screw 223 and simplifying the structure.

[0083] like Figure 4As shown, the cross member 221 further includes a buffer pad 225, which is sleeved on the second locking screw and located between the screw cap of the second locking screw and the first rod 2211 or between the screw cap of the second locking screw and the second rod 2212. The buffer pad 225 can elastically deform when the second locking screw locks the relative position between the first rod 2211 and the second rod 2212. On the one hand, it can provide a buffer for the locking force of the second locking screw, so that the pressure of the second locking screw on the first rod 2211 or the second rod 2212 is gradually increased, thereby preventing loosening. On the other hand, it can prevent friction between the screw cap of the second locking screw and the first rod 2211 or between the screw cap of the second locking screw and the second rod 2212, thereby improving the service life.

[0084] In this embodiment, the bracket 21 is provided with two guide rails 224 spaced apart in the vertical direction, and the support member 23 is slidably connected to both guide rails 224. Since the support member 23 and the cross member 221 are pivotally connected via the rotating shaft 2213, the support member 23 and the cross member 221 are easily rotated relative to each other, thereby affecting the sliding of the support member 23. The two parallel guide rails 224 provided on the bracket 21 can guide the support member 23 from both sides of the rotating shaft 2213, ensuring that the connecting rod 231 of the support member 23 always remains in a vertical position, preventing rotation that would affect the sliding.

[0085] Example 2

[0086] In this embodiment, the preparation device includes a base 1, a support mechanism 2 and a driving mechanism 3. The base 1 is configured to fix the battery module 100. The support mechanism 2 includes a bracket 21, a spacing adjustment component 22 and a plurality of support members 23. The spacing adjustment component 22 is arranged on the bracket 21. The plurality of support members 23 are connected to the spacing adjustment component 22. The spacing adjustment component 22 is configured to adjust the distance between the plurality of support members 23 at equal intervals. The driving mechanism 3 is configured to drive the bracket 21 to move so that the support member 23 can enter between the two pole ears 103 of the corresponding battery cell group 101 to support the bending of the two pole ears 103.

[0087] The present invention provides a battery module manufacturing device. In the manufacturing device, a base 1 can secure multiple cell groups 101 of a battery module 100, while a support mechanism 2 can adjust the distances between multiple support members 23 via a spacing adjustment assembly 22, enabling the multiple support members 23 to correspond to multiple battery groups. This allows the manufacturing device to be suitable for manufacturing battery modules 100 with different cell 102 models. Driven by a drive mechanism 3, the multiple support members 23 are positioned one by one between two tabs 103 of a corresponding cell group 101 to support the bending of the two tabs 103, thereby enabling rolling and welding operations on the stacked tabs 103.

[0088] Since the support member 23 extends between the two tabs 103 of each battery cell group 101, the two stacked tabs 103 can be rolled under the support of the support member 23 to ensure that the two tabs 103 are fitted together before welding, thereby improving the welding quality and ensuring the performance of the battery module 100.

[0089] It is worth noting that the multiple battery cells 102 in the same battery module 100 are usually of the same model, so the distances between the tabs 103 of the multiple battery cells 102 located at the same end of the battery module 100 are equal, so the distances between the support members 23 inserted between the two battery cells 102 in each battery cell group 101 are also equal.

[0090] In this embodiment, after the tab 103 at one end of the battery module 100 is welded, the battery module 100 needs to be rotated 180° so as to weld the tab 103 at the other end of the battery module 100 .

[0091] In this embodiment, the spacing adjustment component 22 can adjust the distance between multiple support members 23 at equal intervals, so that when the operator adjusts the distance between the support members 23, he only needs to ensure that two adjacent support members 23 can be respectively inserted between the pole ears 103 of two adjacent groups of battery cell groups 101, which reduces the difficulty of adjustment and improves the adjustment efficiency.

[0092] In this embodiment, the spacing adjustment component 22 also includes a spacing adjustment plate, which is slidably arranged on the bracket 21 along the vertical direction. The spacing adjustment plate is provided with multiple adjustment slots at intervals along the first direction. The multiple slots correspond one-to-one to the multiple support members 23. The upper ends of the multiple adjustment slots are arranged at equal intervals, and the lower ends of the multiple adjustment slots are arranged at equal intervals. The spacing between the upper ends of the multiple adjustment slots is not equal to the spacing between the lower ends. The multiple support members 23 are slidably connected to the bracket 21, and each support member 23 is provided with a sliding portion, which is slidably arranged in the corresponding slot.

[0093] When the operator needs to adjust the distance between the multiple support members 23, he only needs to slide the spacing adjustment plate in the vertical direction to change the position of the sliding parts of the multiple support members 23 in the adjustment slot, thereby achieving the spacing adjustment of the multiple support members 23.

[0094] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A battery module manufacturing device, characterized in that: include: A base (1) is configured to fix a battery module (100), wherein the battery module (100) includes a plurality of battery cell groups (101), and the battery cell groups (101) include two tabs (103) arranged at intervals; A support mechanism (2) comprises a bracket (21), a spacing adjustment component (22) and a plurality of support members (23), wherein the spacing adjustment component (22) is arranged on the bracket (21), the plurality of support members (23) are connected to the spacing adjustment component (22), and the spacing adjustment component (22) is configured to adjust the spacing between the plurality of support members (23) at equal intervals; A driving mechanism (3) is configured to drive the bracket (21) to move so that the support member (23) can enter between the two tabs (103) of the corresponding battery cell group (101) to support the bending of the two tabs (103).

2. The battery module manufacturing device according to claim 1, characterized in that: The spacing adjustment assembly (22) includes a plurality of cross members (221), wherein the cross members (221) are pivotally connected to a first rod (2211) and a second rod (2212) via a rotating shaft (2213), the support member (23) is connected to the rotating shaft (2213), and the first rod (2211) and the second rod (2212) of the plurality of cross members (221) are pivotally connected in sequence.

3. The battery module manufacturing device according to claim 2, characterized in that: The spacing adjustment assembly (22) further includes two adjustment sliders (222), the rotating shafts (2213) of the two cross members (221) at both ends are pivotally connected to one of the adjustment sliders (222), and the two adjustment sliders (222) are slidably arranged on the bracket (21) to adjust the distance between the plurality of support members (23).

4. The battery module manufacturing device according to claim 3, characterized in that: At least one of the adjusting sliders (222) is provided with a first locking screw (223), the locking screw being passed through the adjusting slider (222) and being threadedly connected to the adjusting slider (222), and the locking screw being capable of abutting against the bracket (21) to lock the adjusting slider (222).

5. The battery module manufacturing device according to claim 2, characterized in that: The rotating shaft (2213) is a second locking screw, which passes through the first rod (2211) and the second rod (2212) and is threadedly connected to the support member (23).

6. The battery module manufacturing device according to claim 5, characterized in that: The cross member (221) further includes a buffer pad (225), which is sleeved on the second locking screw and located between the screw cap of the second locking screw and the first rod (2211) or between the screw cap of the second locking screw and the second rod (2212).

7. The battery module manufacturing device according to claim 2, characterized in that: The bracket (21) is provided with two guide rails (224) spaced apart in the vertical direction, and the support member (23) is slidably connected to the two guide rails (224).

8. The battery module manufacturing device according to any one of claims 1 to 7, characterized in that: The driving mechanism (3) comprises a horizontal driving member (35), the output end of the horizontal driving member (35) being connected to the bracket (21), and the horizontal driving member (35) being capable of driving the bracket (21) to move in a horizontal direction so that the supporting member (23) is inserted between the two tabs (103) of the corresponding battery cell group (101).

9. The battery module manufacturing device according to claim 8, characterized in that: The driving mechanism (3) further comprises a crossbeam (31), a first slider (32) and a vertical driving member (33), wherein the first slider (32) is slidably arranged on the crossbeam (31), the vertical driving member (33) is arranged on the first slider (32), the horizontal driving member (35) is connected to the output end of the vertical driving member (33), and the sliding direction of the first slider (32) and the driving direction of the horizontal driving member (35) are arranged at an angle.

10. The battery module manufacturing device according to any one of claims 1 to 7, characterized in that: The support member (23) comprises a detachably connected connecting rod (231) and a supporting rod (232), wherein the connecting rod (231) is connected to the spacing adjustment assembly (22), and the supporting rod (232) extends in a horizontal direction, and the supporting rod (232) can enter between the two pole tabs (103) of the battery cell group (101) to support the bending of the two pole tabs (103).

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