Battery assembling device

Abstract

The utility model relates to a battery assembly device, and relates to the technical field of power battery assembly. The assembling efficiency of the battery is improved. The battery assembling device comprises a tray, assembling structural parts and a gasket group, a plurality of open grooves are formed in the tray, the assembling structural parts are arranged in the open grooves in a penetrating mode respectively, and gaps are formed between the side walls of the assembling structural parts and the inner walls of the corresponding open grooves. The gasket set comprises at least one detachable gasket, the gasket set or the gasket is movably connected to the side wall of the assembly structural part, so that the first side wall abuts against the inner wall of the open groove through the gasket or the gasket set, and the first side wall is the side wall connected with the gasket set or the gasket. The position of the assembly structural part in the open groove can be changed by adjusting the gasket set or the gaskets, so that the assembly structural part is located under the automobile body metal plate installation hole, and therefore it is guaranteed that assembly is conducted efficiently.

Description

Technical Field

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

[0002] Power batteries are one of the most core components in new energy vehicles. During the assembly process, assembly workers need to connect the power battery to the body sheet metal.

[0003] Referring to CN115447694A, a method for assembling an automotive battery pack, a storage medium, an electronic device, and a system. The method provided by this application includes fitting a reference hole on the battery pack and a reference fixing hole on the vehicle body, and controlling the battery pack assembly device to optimize the fitting of the secondary reference hole on the battery pack and the secondary reference fixing hole on the vehicle body. Compare other mounting holes on the battery pack with the corresponding fixing holes on the vehicle body respectively. If the comparison result is that they cannot be installed, then according to the aperture comparison data of the mounting hole and the corresponding fixing hole, output the adjustment data of the mounting hole.

[0004] However, since it takes a long time to fit data, compare and analyze data, and calculate the adjustment data, and the battery cannot be assembled during this process, the assembly efficiency using the above method is relatively low. And due to the existence of errors in the production process, there may still be cases of stripped threads and slipping teeth during the battery assembly process. Summary of the Utility Model

[0005] This application provides a battery assembly device for improving the assembly efficiency of the battery.

[0006] In order to achieve the above purpose, the technical solution adopted in this application is as follows:

[0007] The battery assembly device provided in this application is used to connect the battery to the body sheet metal. The battery assembly device includes a tray, an assembly structural member, and a gasket group. A plurality of slots are provided on the tray, and the plurality of slots correspond to the plurality of assembly structural members one by one. The plurality of assembly structural members are respectively inserted into the plurality of slots, and there is a gap between the side wall of the assembly structural member and the inner wall of the corresponding slot. The gasket group includes at least one detachable gasket, and the gasket group or the gasket is movably connected to the side wall of the assembly structural member, so that the first side wall abuts against the inner wall of the slot through the gasket or the gasket group. Wherein, the first side wall is the side wall connected with the gasket group or the gasket.

[0008] As a medium for realizing the tightening of screws, the position relationship between the assembly structural part and the mounting hole of the body sheet metal determines whether there will be thread stripping or slipping. The gasket group includes at least one detachable gasket, and the gasket group or the gasket can be movably connected to the side wall of the assembly structural part so that the first side wall abuts against the inner wall of the slot through the gasket or the gasket group. This means that by adjusting the gasket group or the gasket, the position of the assembly structural part in the slot can be changed, so that the assembly structural part can be located directly below the mounting hole of the body sheet metal. And because the presence of the gasket group and the gasket can fill the gap between the side wall of the assembly structural part and the inner wall of the slot, the stability of the assembly structural part can be maintained. There are multiple slots on the tray, and each slot is provided with an assembly structural part, so that the assembly structural part can make applicable adjustments according to each mounting hole on the corresponding body sheet metal, greatly improving the flexibility. Since the staff can align the assembly structural part with the mounting hole by adjusting the gasket group or the gasket, the number of thread stripping and slipping can be reduced, and the number of reworks can be reduced. Therefore, the assembly efficiency is improved.

[0009] As a possible implementation, the assembly structural part includes a guide cylinder mounting seat, a guide cylinder and a guide rod. The guide cylinder mounting seat is inserted into the slot, and the guide cylinder mounting seat is provided with a through hole; the guide cylinder is sleeved in the through hole; the guide cylinder is hollow, and the guide rod is inserted into the guide cylinder.

[0010] As a possible implementation, the guide cylinder mounting seat includes a guide part and a mounting part. The guide part is connected to the mounting part, the gasket group or the gasket is movably connected to the guide part, and the through hole penetrates through the guide part and the mounting part; the mounting part is connected to the bottom of the tray.

[0011] As a possible implementation, the mounting part is a flange end face, and the mounting part is connected to the tray by screws.

[0012] As a possible implementation, there is a gap between the guide rod and the guide cylinder.

[0013] As a possible implementation, the size of the gasket group is greater than or equal to 0.2 mm and less than or equal to 1 mm.

[0014] As a possible implementation, the tray is made of CA-DC01 cold-rolled steel sheet.

[0015] As a possible implementation, when the number of the gasket groups is one, the gasket group includes a plurality of gaskets. When the number of the gasket groups is multiple, the gasket group includes at least one gasket.

[0016] As a possible implementation, a plurality of bearing platforms are arranged on the tray, and the bearing platforms are used for bearing batteries.

[0017] As a possible implementation, the assembly structural member includes a guide rod, and the battery assembly device further includes a motor, which is connected to the bottom of the guide rod. Description of the Drawings

[0018] Figure 1 Schematic diagram of a battery assembly device provided by an embodiment of the present application;

[0019] Figure 2 Partial enlarged schematic diagram of a battery assembly device provided by an embodiment of the present application;

[0020] Figure 3 Schematic diagram of another battery assembly device provided by an embodiment of the present application;

[0021] Figure 4 Simplified diagram of the relationship between an assembly structural member and a slot provided by an embodiment of the present application;

[0022] Figure 5 Top view schematic diagram of a battery assembly process provided by an embodiment of the present application;

[0023] Figure 6 Composition schematic diagram of an assembly structural member provided by an embodiment of the present application;

[0024] Figure 7 Schematic diagram of another battery assembly device provided by an embodiment of the present application.

[0025] In the figure, 1 - tray, 2 - assembly tool, 3 - carrier, 4 - chute, 5 - sheet metal, 51 - mounting hole, 52 - screw, 53 - nut, 21 - sleeve, 22 - guide rod, 6 - battery package, 61 - through hole, 11 - slot, 7 - assembly structural member, 8 - gasket group, 71 - side wall, 72 - guide cylinder mounting seat, 73 - guide cylinder, 721 - guiding part, 722 - mounting part, 9 - motor. Detailed Embodiments

[0026] The following will describe the embodiments of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for explaining the present application, rather than limiting the protection scope of the present application.

[0027] It should be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present application. Therefore, only the components related to the present application are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0028] In the description of the embodiments, unless otherwise specified, " / " means "or". For example, A / B can mean A or B. "And / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, "at least one" and "multiple" refer to two or more. The words such as "first" and "second" do not limit the quantity and execution order, and the words such as "first" and "second" do not necessarily limit being different.

[0029] With the gradual reduction of fossil energy and the increasing environmental problems, it is an irresistible trend to develop new energy, and new energy vehicles have also become the development direction of the automotive industry. One of the most core components of new energy vehicles, the power battery, is the direct source of power for new energy vehicles.

[0030] The assembly of each component of the vehicle is an important process in the vehicle production process. One of the steps is to install the power battery onto the body sheet metal (hereinafter also simply referred to as sheet metal). As a possible implementation, through holes are provided on the power battery, and installation holes are provided on the body sheet metal. During the battery assembly process, screws sequentially pass through the through holes and the installation holes, and then cooperate with nuts located on one side of the installation holes to fix the power battery on the body sheet metal.

[0031] The process of sequentially passing the screws through the through holes and the installation holes and achieving tightening usually requires the assistance of a battery assembly device. Exemplarily, as Figure 1 shown, Figure 1 The shown battery assembly device includes a tray 1, an assembly tool 2, a carrier 3, and a chute 4. A card slot matching the chute 4 is configured on the battery package. By engaging the card slot with the chute 4, the battery can be placed on the tray 1 and carried by multiple carriers 3. Multiple through holes on the battery package correspond to multiple assembly tools 2 on the tray 1 one by one.

[0032] Exemplarily, as Figure 2 shown, Figure 2It is a partial enlarged view of the battery assembly device. The function of the assembly tool 2 is to make the screw 52 pass through the through hole 61 on the battery package 6 and the mounting hole 51 on the sheet metal 5 in turn, and fix the battery and the sheet metal 5 by screwing the matching nut 53. Specifically, the assembly tool 2 includes a sleeve 21 and a guide rod 22 located in the sleeve 21. With the help of a driving device, such as a motor, the guide rod 22 can move upward while rotating. Under the synergistic effect of the upward driving force of the guide rod 22 and the power of rotation, the screw 52 is gradually tightened.

[0033] However, due to some inevitable errors in the vehicle manufacturing process, the mounting hole 51 of the sheet metal 5 may have a precision fluctuation of about 1.5 mm. Figure 2 For example, that is to say, Figure 2 Compared with the mounting hole 51 in the embodiment, the mounting hole 51 with the fluctuation of accuracy will produce an offset in the original position, and the offset is about 1.5 mm. Figure 2 The mounting hole 51 opposite to the assembly tool 2 is offset to the left by 1 mm.

[0034] Since the screw 52 was not hindered when being screwed by the guide rod 22, it can pass through the mounting hole 51 smoothly. However, when the mounting hole 51 is offset, the screw 52 that could originally pass through the center of the mounting hole 51 may pass by rubbing against the edge of the mounting hole. At this time, in addition to the upward driving force and rotational power of the guide rod 22, the screw will also be subject to the friction of the side wall of the mounting hole 51, causing the screw 52 to tilt under the action of the combined force, resulting in the screw 52 being threaded or stripped. When the stability is affected, the sheet metal will also be damaged, affecting the appearance. In addition, since the screw 52 is hindered during the screwing process, the assembly efficiency of the battery is also greatly reduced.

[0035] In view of this, the present application provides a battery assembly device, exemplarily, as Figure 3 The battery assembly device includes a tray 1, an assembly structure 7 and a gasket set 8. The tray 1 is provided with a plurality of slots 11, and the plurality of slots 11 correspond to the plurality of assembly structures 7 one by one. The plurality of assembly structures 7 are respectively inserted into the plurality of slots 11, and there is a gap between the side wall of the assembly structure 7 and the inner wall of the corresponding slot 11. It should be noted that for a clearer illustration, Figure 3 In the figure, only one assembly structure 7 is inserted into the corresponding slot 11 as an example. In practical application, Figure 3 Each of the slots 11 has an assembly structure 7 corresponding thereto.

[0036] The gasket set 8 includes at least one detachable gasket, and the gasket set 8 or the gasket is movably connected to the side wall of the assembly structure 7 so that the first side wall is abutted against the inner wall of the slot 11 through the gasket or the gasket set 8 .

[0037] Exemplarily, with reference to Figure 4 , the side wall of the assembled structural member will be described. Figure 4 is a schematic diagram of the relationship between the assembled structural member and the slot. Figure 4 The shaded part in is the side wall 71 of the assembled structural member. The surface of the slot 11 close to the side wall 71 of the assembled structural member is the inner wall of the slot 11. The gap between the side wall 71 of the assembled structural member and the inner wall of the corresponding slot 11 means that there is a certain distance between the side wall 71 of the assembled structural member and the inner wall of the corresponding slot 11. For example, the distance between the side wall 71 of the assembled structural member and the inner wall of the adjacent slot 11 is L1.

[0038] The gap between the side wall of the assembled structural member and the inner wall of the corresponding slot 11 can be filled by a gasket group or a gasket. Taking Figure 4 as an example, the gasket group or the gasket can be movably connected to any one or more side walls 71 of the assembled structural member. ( Figure 4 The assembled structural member shown has a total of four side walls 71. According to the arrows shown, the four side walls 71 are respectively denoted as X1, X2, Y1, and Y2), for example, the battery assembly device includes a gasket group, and the gasket group is arranged on the side wall X1. For another example, the battery assembly device includes three gasket groups, and the three gasket groups are respectively arranged on the side wall X1, the side wall X2, and the side wall Y2. By adjusting the position of the gasket group or the gasket, the relative position of the assembled structural member in the slot 11 can be adjusted.

[0039] The gasket group or the gasket can fill the distance between the side wall of the assembled structural member 7 and the inside of the slot. The gasket group 8 includes at least one detachable gasket. The gasket group 8 or the gasket is movably connected to the side wall of the assembled structural member 7, so that the first side wall abuts against the inner wall of the slot 11 through the gasket or the gasket group 8. There are multiple situations, for example:

[0040] A gasket group contains multiple gaskets arranged on one side wall. For example, a gasket group is arranged on the side wall X1, and the side wall X1 abuts against the inner wall of the adjacent slot through the gasket group.

[0041] A gasket group contains one gasket arranged on one side wall, and this situation is as described above.

[0042] Multiple gasket groups are arranged on multiple side walls. For example, three gasket groups: the first gasket group, the second gasket group, and the third gasket group are respectively arranged on the side wall X1, the side wall X2, and the side wall Y2. At this time, the side wall X1 abuts against the inner wall of the adjacent slot through the first gasket group, the side wall X2 abuts against the inner wall of the adjacent slot through the second gasket group, the side wall Y1 abuts against the inner wall of the adjacent slot, and the side wall Y2 abuts against the inner wall of the adjacent slot through the third gasket group.

[0043] The battery assembly device includes multiple gasket groups. Some of the assembled structural members are connected to the inner wall of the slot through the gasket groups, some are connected through gaskets, and some are directly abutted. For example, the battery assembly device includes a first gasket group and a second gasket group. The side wall X1 abuts against the inner wall of the adjacent slot through the first gasket group, the side wall X2 abuts against the inner wall of the adjacent slot, the side wall Y1 abuts against the inner wall of the adjacent slot through some gaskets in the second gasket group, and the side wall Y2 abuts against the inner wall of the adjacent slot through another part of the gaskets in the second gasket group.

[0044] The battery assembly device includes a gasket group. Some of the gaskets in the gasket group are used to connect the assembled structural members to the inner wall of the slot, and the opposite side walls are connected to the inner wall of the slot through the remaining gaskets in the gasket group. For example, the side wall X1 abuts against the inner wall of the adjacent slot through some gaskets in the gasket group, and the side wall X2 abuts against the inner wall of the adjacent slot through the remaining gaskets in the gasket group.

[0045] For example, as Figure 5 shown, Figure 5 is a top view schematic diagram of a battery assembly process provided by an embodiment of the present application. Figure 5 In (a) represents the top view before adjusting the gasket, Figure 5 and (b) in is the top view after adjusting the gasket. It can be seen from Figure 5 that the dotted line indicates the position of the mounting hole of the sheet metal under ideal conditions. However, due to process manufacturing errors, the mounting hole has accuracy fluctuations, and its actual position is shown by the solid line. L2 is the accuracy fluctuation of the mounting hole.

[0046] Since the position of the actual mounting hole has changed, it is necessary to make corresponding position adjustments to the assembled structural members so that the assembled structural member 7 is aligned with the position of the actual mounting hole. Since the actual mounting hole is offset to the left compared to the ideal mounting hole, some gaskets in the left gasket group 8 are removed and moved to the right, so that the relative position of the assembled structural member 7 in the slot can be shifted to the left. It can be seen from Figure 5 that both the left and right side walls of the assembled structural member 7 abut against the inner wall of the slot through gaskets, that is to say, both the left and right side walls of the assembled structural member 7 are the first side walls. When Figure 5 all the gaskets on the left side of the assembled structural member 7 in are moved to the right side, the left side wall of the assembled structural member 7 abuts against the inner wall of the slot, and the right side wall of the assembled structural member 7 still abuts against the inner wall of the slot through the gasket.

[0047] It should be understood that since the gasket group is a combination of multiple detachable gaskets and the size of each gasket is fixed, the entire gasket group can also be directly moved according to the actual situation. Take Figure 5Taking (a) in [Figure] as an example, the gaps between the left and right side walls of the assembly structural member 7 and the inner wall of the slot can be regarded as two gasket groups. When the leftward offset of the actual installation hole position is equal to the size of the gasket group connected to the left side wall of the assembly structural member 7, moving the left gasket group as a whole to the right side wall of the assembly structural member 7 can achieve the alignment of the assembly structural member 7 and the installation hole. At this time, the left side wall of the assembly structural member 7 directly abuts against the inside of the slot, and the right side wall of the assembly structural member 7 abuts against the adjacent inner wall of the slot through the gasket group.

[0048] It should be noted that Figure 5 only the situation of adding or reducing gaskets on the two side walls of the assembly structural member 7 is shown. This situation is applicable to the left or right offset of the installation hole. In actual applications, the installation hole may offset to the upper left or lower right. At this time, corresponding adjustments need to be made to the other two side walls of the assembly structure 7. For example, adding gaskets or gasket groups, reducing gaskets or gasket groups.

[0049] It should be noted that whether the whole gasket group is adjusted or part of the gaskets in the gasket group are adjusted, the side wall where the gasket is located will abut against the adjacent inner wall of the slot. It means that on the premise that the relative position of the assembly structural member in the slot changes by adjusting the gasket or gasket group. For example, referring to Figure 4 , the battery assembly device includes a gasket group, and the gasket group includes multiple gaskets. Originally, the gasket group was set on the side wall X1 of the assembly structural member. The side wall X1 abutted against the inner wall of the slot through all the gaskets in the gasket group, and the side wall X2 of the assembly structural member directly abutted against the inner wall of the slot. At this time, if part of the gaskets in the gasket group are moved to the side wall Y1, the position of the assembly structural member in the slot will not change.

[0050] As a medium for realizing the tightening of screws, the positional relationship between the assembly structural member and the installation hole of the body sheet metal determines whether there will be thread stripping or slipping. The gasket group includes at least one detachable gasket, and the gasket group or gasket can be movably connected to the side wall of the assembly structural member so that the first side wall abuts against the inner wall of the slot through the gasket or gasket group. This means that by adjusting the gasket group or gasket, the position of the assembly structural member in the slot can be changed, so that the assembly structural member can be located directly below the installation hole of the body sheet metal. And because of the existence of the gasket group and gasket, the gap between the side wall of the assembly structural member and the inner wall of the slot can be filled, so the stability of the assembly structural member can be maintained. There are multiple slots on the tray, and each slot is provided with an assembly structural member inside, so that the assembly structural member can make applicable adjustments according to the installation holes on each corresponding body sheet metal, and the flexibility is greatly improved. Since the staff can achieve the alignment of the assembly structural member and the installation hole by adjusting the gasket group or gasket, the number of thread stripping and slipping can be reduced, and the number of reworks can be reduced. Therefore, the assembly efficiency is improved.

[0051] Figure 6 shows the composition of the assembled structural member. The assembled structural member includes a guide cylinder mounting seat 72, a guide cylinder 73, and a guide rod 22. The guide cylinder mounting seat 72 is passed through the slotted opening 11. The guide cylinder mounting seat 72 is provided with a through hole, and the guide cylinder 73 is sleeved in the through hole. The guide cylinder 73 is hollow, and the guide rod 22 is passed through the guide cylinder 73. As a possible implementation, there is a gap between the guide rod 22 and the guide cylinder 73.

[0052] As a possible implementation, the guide cylinder mounting seat 72 includes a guiding portion 721 and a mounting portion 722. The guiding portion 721 is connected to the mounting portion 722. The gasket group 8 or the gasket is movably connected to the guiding portion 721. The through hole penetrates through the guiding portion 721 and the mounting portion 722. The mounting portion 722 is connected to the bottom of the tray 1. The guiding portion 721 functions as a guide, such that the guide rod 22 will not be severely skewed. In order to facilitate the adjustment of the gasket group and the gasket, the guiding portion 721 is set to Figure 6 the regular rectangle shown.

[0053] In some embodiments, the mounting portion 722 forms a flange end face, and the mounting portion 722 is connected to the tray 1 by screws. When it is necessary to make a position adjustment to the assembled structural member, the screws connecting the mounting portion 722 and the tray 1 are loosened. After the adjustment of the gasket group or the gasket is completed, the screws connecting the mounting portion 722 and the tray 1 are tightened to fix the assembled structural member.

[0054] As a possible implementation, the size of the gasket group is greater than or equal to 0.2 mm and less than or equal to 1 mm. It should be noted that both the size of the gasket group and the size of the gasket refer to the dimension in the direction between the side wall of the assembled structural member and the slotted opening.

[0055] As a possible implementation, the tray is a CA-DC01 cold-rolled steel plate. While the CA-DC01 steel plate has relatively high strength, it has great material toughness and is not easily broken. Moreover, the CA-DC01 cold-rolled steel plate has very strong plasticity, low hardness, and is easy to process for slotted openings

[0056] As a possible implementation, when the number of the gasket group is one, the gasket group includes a plurality of gaskets. When the number of the gasket group is multiple, the gasket group includes at least one gasket. When the number of the gasket group is one, the gasket group including a plurality of detachable gaskets can make the position adjustment of the assembled structural member more flexible. For example, if the gasket group contains 5 gaskets and the size of each gasket is 0.1 mm, then the adjustment precision using the gasket group directly is 0.5 mm, while the adjustment precision of the position of the assembled structural member using the gasket is 0.1 mm. And the higher the adjustment precision of the position of the assembled structural member, the less likely it is to occur the phenomena of stripped threads and slipping threads.

[0057] As a possible implementation, a plurality of bearing platforms are provided on the tray, such as Figure 1 shown. The bearing platform 3 is used to bear the battery, making the battery load more evenly distributed. During the battery assembly process, the battery will not shift in position, thus better ensuring that the screws can pass through the through holes and mounting holes in sequence, and most likely avoiding the situation of thread slipping and wire slipping, improving the battery assembly efficiency.

[0058] As a possible implementation, such as Figure 7 shown, the assembly structural member includes a guide rod. The battery assembly device further includes a motor 9, and the motor 9 is connected to the bottom of the guide rod 22. While the motor 9 rotates, it drives the guide rod 22 connected to the motor 9 to rotate and also drives the guide rod 22 to move upward. The upper end of the guide rod 22 is connected to one end of the screw. While the guide rod 22 moves upward in a spiral manner, it drives the screw located at the upper end of the guide rod 22 to move upward in a spiral manner. The screw gradually passes through the through hole of the battery and the mounting hole of the sheet metal, and finally the screw is tightly connected to the nut, making the battery firmly connected to the vehicle body sheet metal.

[0059] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any change or replacement within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery assembly device for connecting a battery to a vehicle body sheet metal (5), characterized in that, It includes a tray (1), an assembly structural member (7), and a gasket group (8). A plurality of slots (11) are provided on the tray (1), and the plurality of slots (11) correspond to the plurality of assembly structural members (7) one by one. The plurality of assembly structural members (7) are respectively inserted into the plurality of slots (11), and there is a gap between the side wall (71) of the assembly structural member (7) and the inner wall of the corresponding slot (11). The gasket group (8) includes at least one detachable gasket. The gasket group (8) or the gasket is movably connected to the side wall (71) of the assembly structural member (7), so that the first side wall (71) abuts against the inner wall of the slot (11) through the gasket or the gasket group (8), where the first side wall (71) is the side wall (71) connected with the gasket group (8) or the gasket.

2. The battery assembly device according to claim 1, characterized in that, The assembly structural member (7) includes a guide cylinder mounting seat (72), a guide cylinder (73), and a guide rod (22). The guide cylinder mounting seat (72) is inserted into the slot (11), and the guide cylinder mounting seat (72) is provided with a through hole; the guide cylinder (73) is sleeved in the through hole; the guide cylinder (73) is hollow, and the guide rod (22) is inserted into the guide cylinder (73).

3. The battery assembly device according to claim 2, wherein, The guide cylinder mounting seat (72) includes a guide portion (721) and a mounting portion (722). The guide portion (721) is connected to the mounting portion (722). The gasket group (8) or the gasket is movably connected to the guide portion (721), and the through hole penetrates through the guide portion (721) and the mounting portion (722); the mounting portion (722) is connected to the bottom of the tray (1).

4. The battery assembly device according to claim 3, wherein The mounting portion (722) is a flange end face, and the mounting portion (722) is connected to the tray (1) by screws (52).

5. The battery assembly device according to any one of claims 2 to 4, characterized in that, There is a gap between the guide rod (22) and the guide cylinder (73).

6. The battery assembly device according to any one of claims 1-4, characterized in that, The size of the gasket group (8) is greater than or equal to 0.2 mm and less than or equal to 1 mm.

7. The battery assembly device according to any one of claims 1 to 4, characterized in that, The tray (1) is made of CA-DC01 cold-rolled steel plate.

8. The battery assembly device according to any one of claims 1 to 4, characterized in that When the number of the gasket group (8) is one, the gasket group (8) includes a plurality of the gaskets. When the number of the gasket group (8) is multiple, the gasket group (8) includes at least one of the gaskets.

9. The battery assembly device according to any one of claims 1 to 4, characterized in that, A plurality of bearing platforms (3) are provided on the tray (1), and the bearing platforms (3) are used for bearing batteries.

10. The battery assembly device according to any one of claims 1 to 4, characterized in that, The assembly structural member (7) includes a guide rod (22), and the battery assembly device further includes a motor (9), and the motor (9) is connected to the bottom of the guide rod (22).

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