High-precision assembling mechanism of battery module

Abstract

The utility model provides a high-precision assembling mechanism of a battery module. The high-precision assembling mechanism comprises a female tray, a male tray and a female tray, a sub-tray; a length limiting assembly; a width limiting assembly; the position adjusting assembly comprises a first linkage limiting mechanism fixed to the sub-tray and at least two second linkage limiting mechanisms movably arranged on the sub-tray. The two width clamps which are adjacently arranged in the middle are connected through a first linkage limiting mechanism, and the other two adjacent width clamps are connected through corresponding second linkage limiting mechanisms, so that the distance between every two adjacent width clamps is adjusted; and the side pressing assembly is arranged on the outer side of the width limiting assembly and used for promoting all the width clamps to synchronously approach and extrude towards the center or promoting all the width clamps to synchronously move away from the center. According to the utility model, the large-size and heavy-weight battery module can be conveniently assembled and put into a box, so that the battery core is effectively prevented from falling off, and the position precision among the components is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a high-precision assembly mechanism for a battery module. Background Art

[0002] In the existing technology of putting a battery module into a box, usually a mechanical hand gripper is used to put the battery module and the module side plate into the PACK box body through a pneumatic gripper or a vacuum chuck; however, there are the following defects in using this solution:

[0003] 1. For a large-size and heavy battery module, a large-load handling mechanism must be used, and the problem of the battery core falling off easily occurs during the handling process, and the position accuracy of the components cannot be accurately maintained;

[0004] 2. It is difficult to adjust the distance between multiple width clamps, resulting in inconvenience in putting the battery core or the battery into the box. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a high-precision assembly mechanism for a battery module, which can facilitate the assembly and boxing of large-size and heavy battery modules, effectively avoid the falling of the battery core, and effectively ensure the position accuracy between the components.

[0006] The embodiments of the utility model are realized through the following technical solutions:

[0007] A high-precision assembly mechanism for a battery module includes:

[0008] A mother tray; a son tray; a length limiting component, at least two length clamps that can move in the X-axis direction of the mother tray; a width limiting component, including at least two width clamps that can move in the X-axis direction of the son tray;

[0009] A position adjusting component, including a first linkage limiting mechanism fixed on the son tray, at least two second linkage limiting mechanisms movably arranged on the son tray; at least two of the second linkage limiting mechanisms are symmetrically arranged with respect to the first linkage limiting mechanism; two adjacent width clamps arranged in the middle are connected through the first linkage limiting mechanism, and the other adjacent two width clamps are connected through the corresponding second linkage limiting mechanism to adjust the distance between each adjacent two width clamps;

[0010] A side pressing component, arranged on the outer side of the width limiting component, for urging each width clamp to synchronously move towards the center direction to squeeze or urging each width clamp to synchronously move away from the center direction.

[0011] According to a preferred embodiment, both the first linkage limiting mechanism and the second linkage limiting mechanism include a width elastic connection unit and a limiting unit; two adjacent width clamps are connected by the width elastic connection unit and both of the two adjacent width clamps are partially located within the limiting unit.

[0012] According to a preferred embodiment, the width elastic connection unit of the first linkage limiting mechanism is disposed on the limiting unit and fixed to the sub-tray together, and the width elastic connection unit of the second linkage limiting mechanism is disposed on the limiting unit and movably disposed on the sub-tray together.

[0013] According to a preferred embodiment, a third limiting mechanism is further included, and a part of the second linkage limiting mechanism is disposed within the third limiting mechanism to limit the maximum displacement of the second linkage limiting mechanism in the X-axis direction.

[0014] According to a preferred embodiment, each length clamp is correspondingly arranged with a width clamp, and the length clamp and the width clamp are connected by a follower such that the length clamp and the width clamp can move synchronously along the X-axis direction.

[0015] According to a preferred embodiment, two adjacent length clamps are connected by a length elastic connection unit.

[0016] According to a preferred embodiment, two adjacent length clamps are connected by the corresponding length elastic connection unit that can move along the X-axis direction, wherein the length elastic connection unit located on the center line is fixed to the mother tray.

[0017] According to a preferred embodiment, each width clamp includes at least two clamping arms;

[0018] The clamping arms close to the side pressing assembly are all provided with the corresponding limiting units in the second linkage limiting mechanism.

[0019] According to a preferred embodiment, the side pressing assembly includes a connecting seat movably disposed on the sub-tray and a side pressing plate, and the connecting seat can move along the X-axis on the sub-tray; the side pressing plate is connected to the connecting seat by a first elastic member to urge the side pressing plate to press towards the width clamp.

[0020] According to a preferred embodiment, the limiting unit is provided with a split support block, and the split support block separately divides all the clamping arms within the same limiting unit;

[0021] Wherein, the limiting unit close to the side pressing assembly is connected to the connecting seat by a second elastic member.

[0022] According to a preferred embodiment, the mother tray is disposed at the bottom of the daughter tray, and some of the length clamps on the mother tray can pass through the daughter tray to define the length of the battery cells on the daughter tray.

[0023] According to a preferred embodiment, the area between two adjacent width clamps forms a placement groove, and the area between the side pressing assembly and the width clamps forms a placement groove.

[0024] According to a preferred embodiment, the third limiting mechanism includes a first convex block and a second convex block. The first convex block is disposed on one of the width clamps, and the second convex block is disposed on another adjacent width clamp.

[0025] According to a preferred embodiment, the length clamp includes an upper clamp and a lower clamp that can both move along the Y-axis direction, and both the upper clamp and the lower clamp are connected with positive resetting members.

[0026] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects:

[0027] The present utility model can assemble and put large-size and heavy battery modules into a box, effectively avoiding the dropping of battery cells, and effectively ensuring the position accuracy between components.

[0028] The mother tray and the daughter tray are provided in the present utility model to facilitate the positioning and putting of batteries or battery cells into the box. The length limiting component is arranged on the mother tray to press the short side of the battery cells, and the width limiting component is arranged to limit the long side of the battery cells. The position adjusting component is used to synchronously move multiple width clamps inward to squeeze or synchronously move away from the center direction, so as to facilitate the positioning and distance adjustment of multiple battery cells and facilitate the loading or unloading of the water-cooling plate. Compared with the common box-in mechanisms at present, the present utility model has the characteristics of high safety, high precision and high stability, and can quickly put large-size and heavy modules into the box, effectively avoiding the dropping of battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a schematic structural diagram of the mother tray provided by the embodiment of the present utility model;

[0031] Figure 2 It is a schematic structural diagram of the daughter tray provided by the embodiment of the present utility model;

[0032] Figure 3 The top - view structural schematic diagram of the high - precision assembly mechanism of the battery module provided by the embodiment of the present utility model;

[0033] Figure 4 The three - dimensional structural schematic diagram of the high - precision assembly mechanism of the battery module provided by the embodiment of the present utility model;

[0034] Figure 5 The structural schematic diagram of the first linkage limiting mechanism provided by the embodiment of the present utility model;

[0035] Figure 6 The structural schematic diagram of the first linkage limiting mechanism and the clamping arm provided by the embodiment of the present utility model;

[0036] Figure 7 The structural schematic diagram of the side - pressing component provided by the embodiment of the present utility model;

[0037] Figure 8 The top - view structural schematic diagram of the side - pressing component provided by the embodiment of the present utility model;

[0038] Figure 9 The front - view structural schematic diagram of the high - precision assembly mechanism of the battery module provided by the embodiment of the present utility model.

[0039] Reference numerals: 1, mother tray; 2, son tray; 3, width clamp; 31, clamping arm; 4, first linkage limiting mechanism; 5, second linkage limiting mechanism; 6, width elastic connection unit; 7, limiting unit; 8, third limiting mechanism; 81, first convex block; 82, second convex block; 9, follower; 10, length elastic connection unit; 11, length clamp; 111, upper clamping part; 112, lower clamping part; 12, connecting seat; 13, side - pressing plate; 14, second elastic member; 15, split support block; 16, placing groove; 17, follower hole; 18, first elastic member; 19, positive reset member; 20, third elastic member. Detailed implementation manners

[0040] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0041] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0043] Embodiment

[0044] Please refer to Figures 1 to 9 , a high-precision assembly mechanism for a battery module, comprising: a mother tray 1; a sub-tray 2; a length limiting component, at least two length jigs 11 that can move in the X-axis direction of the mother tray 1; a width limiting component, including at least two width jigs 3 that can move in the X-axis direction of the sub-tray 2; a position adjusting component, including a first linkage limiting mechanism 4 fixed on the sub-tray 2 and at least two second linkage limiting mechanisms 5 movably arranged on the sub-tray 2; at least two of the second linkage limiting mechanisms 5 are symmetrically arranged with respect to the first linkage limiting mechanism 4; two adjacent width jigs 3 arranged adjacent to each other in the middle are connected by the first linkage limiting mechanism 4, and the remaining adjacent two width jigs 3 are all connected by the corresponding second linkage limiting mechanism 5 to adjust the distance between each adjacent two width jigs 3; a side pressing component, arranged outside the width limiting component, for urging each width jig 3 to move synchronously towards the center direction to squeeze or for urging each width jig 3 to move synchronously away from the center direction.

[0045] Furthermore, both the first linkage limiting mechanism 4 and the second linkage limiting mechanism 5 include a width elastic connection unit 6 and a limiting unit 7; two adjacent width jigs 3 are connected by the width elastic connection unit 6 and two adjacent width jigs 3 are both partially located within the limiting unit 7.

[0046] Furthermore, the width elastic connection unit 6 of the first linkage limiting mechanism 4 is arranged on the limiting unit 7 and fixed to the sub-tray 2 together, and the width elastic connection unit 6 of the second linkage limiting mechanism 5 is arranged on the limiting unit 7 and movably arranged on the sub-tray 2 together.

[0047] Further, it further includes a third limiting mechanism 8, and a part of the second linkage limiting mechanism 5 is disposed within the third limiting mechanism 8 to limit the maximum displacement of the second linkage limiting mechanism 5 in the X-axis direction.

[0048] Further, each of the length clamps 11 is correspondingly arranged with one of the width clamps 3, and the length clamps 11 and the width clamps 3 are connected by a follower 9, so that the length clamps 11 and the width clamps 3 can move synchronously along the X-axis direction.

[0049] Further, adjacent length clamps 11 are connected by a length elastic connection unit 10.

[0050] Further, adjacent length clamps 11 are all connected by the corresponding length elastic connection unit 10 that can move along the X-axis direction, wherein the length elastic connection unit 10 located on the center line is fixed to the mother tray 1.

[0051] Further, each of the width clamps 3 includes at least two clamping arms 31;

[0052] The clamping arms 31 close to the side pressing assembly are all provided with corresponding limiting units 7 in the second linkage limiting mechanism 5.

[0053] Further, the side pressing assembly includes a connecting seat 12 and a side pressing plate 13 movably arranged on the sub-tray 2, and the connecting seat 12 can move along the X-axis on the sub-tray 2; the side pressing plate 13 is connected to the connecting seat 12 through a first elastic member 18 to urge the side pressing plate 13 to press towards the width clamp 3.

[0054] Further, the limiting unit 7 is provided with a split support block 15, and the split support block 15 separately separates all the clamping arms 31 within the same limiting unit 7;

[0055] Among them, the limiting unit 7 close to the side pressing assembly is connected to the connecting seat 12 through a second elastic member 14.

[0056] Further, the mother tray 1 is disposed at the bottom of the sub-tray 2, and some of the length clamps 11 on the mother tray 1 can pass through the sub-tray 2 to define the length of the battery cells on the sub-tray 2.

[0057] Further, the area between adjacent width clamps 3 forms a placement groove 16, and the area between the side pressing assembly and the width clamps 3 also forms a placement groove 16.

[0058] Further, the third limiting mechanism 8 includes a first bump 81 and a second bump 82. The first bump 81 is provided on one width fixture 3, and the second bump 82 is provided on another adjacent width fixture 3.

[0059] Further, the length fixture 11 includes an upper clamping member 111 and a lower clamping member 112 that can both move along the Y-axis direction, and positive resetting members 19 are connected to both the upper clamping member 111 and the lower clamping member 112.

[0060] The working principle of the present utility model:

[0061] In this embodiment, the mother tray 1 is provided with positioning pins and support columns for the sub-tray 2 to position and support the sub-tray 2. The sub-tray 2 is stacked on the mother tray 1. A plurality of linear guide rails are provided on both the mother tray 1 and the sub-tray 2. The width fixture 3, the length fixture 11, and the second linkage limiting mechanism 5 can all be slidably matched with the linear guide rails through sliders; a plurality of width fixtures 3 are arranged side by side horizontally, and adjacent width fixtures 3 are connected by width elastic connection units 6. Among them, the two width fixtures 3 arranged in the center (at the position of the center line B-B) are fixed to the sub-tray 2 and connected by the width elastic connection unit 6. This width elastic connection unit 6 is the width elastic connection unit 6 in the first linkage limiting mechanism 4. The limiting unit 7 and the width elastic connection unit 6 in the first linkage limiting mechanism 4 are both fixedly arranged in the center of the sub-tray 2. The limiting unit 7 in the first linkage limiting mechanism 4 is provided with a limiting displacement range. This limiting displacement range can limit the distance between the two width fixtures 3 and can be linked with each other. The above-mentioned center means the central position of the sub-tray 2, that is, close to the position of the center line B-B. Further, the above two adjacent width fixtures 3 arranged in the center (at the position of the center line B-B) are connected by the width elastic connection unit 6 fixed to the sub-tray 2, that is, the clamping arms 31 of the two width fixtures 3 that are in the center and not in the same width fixture 3 are connected by the width elastic connection unit 6 fixed to the sub-tray 2; the width fixture 3 is formed by two clamping arms 31 that can move left and right along the X-axis direction and a bottom plate. The area between the two clamping arms 31 of the same width fixture 3 is used to place the battery cell. The left and right sides of the battery cell are limited by the two clamping arms 31 of the width fixture 3. In this embodiment, the center line B-B is the innermost or the most central, central position. Relatively, the left and right ends of the sub-tray 2 are the outermost positions among several width fixtures 3. When pulling the two width fixtures 3 at the left and right ends of the sub-tray 2 away from the center line B-B respectively, that is, simultaneously pulling the clamping arm 31 of the leftmost width fixture 3 in the direction away from the center line B-B and pulling the clamping arm 31 of the rightmost width fixture 3 in the direction away from the center line B-B; when the outermost width fixture 3 moves to the maximum distance to the left, it drives the adjacent width fixture 3 on the right to move to the left. Since the clamping arm 31 of the outermost width fixture 3 is connected to the clamping arm 31 of the adjacent width fixture 3 on the right by the width elastic connection unit 6, and the clamping arm 31 of the adjacent width fixture 3 on the right is adjacent to the next adjacent width fixture 3 on the right, multiple adjacent width fixtures 3 are synchronously driven to adjust the distance between multiple width fixtures 3 in a linkage manner, which is convenient for placing the battery cell or the battery. A receiving groove is formed between the two clamping arms 31 of the same width fixture 3. The horizontal movement of the width fixture 3 is convenient for placing the battery cell. Similarly, when it is necessary to move the width fixture 3 along the X-axis direction towards the center line, the two outermost width fixtures 3 on the left and right need to be moved closer to the center line B-B to squeeze, so as to drive multiple receiving grooves to move inwards and drive the battery cell or the battery to move.The position of the center line B-B is the center position of the sub-tray 2, and the direction towards the center is the direction towards the center line B-B.

[0062] In this embodiment, as shown in the attached Figure 4 figure, after the mother tray 1 and the sub-tray 2 are fitted, the length fixture 11 passes through the sub-tray 2 and surrounds the front and rear ends of the accommodation groove. The width of the accommodation groove is the distance between the clamping arms 31 of the width fixture 3. The length of the accommodation groove is controlled by the length fixture 11. The length fixture 11 can move back and forth through the slider, that is, move along the Y-axis. When the distance between the upper clamping member 111 and the lower clamping member 112 is shortened, the length of the accommodation groove becomes shorter, and the front and rear ends of the battery cell are pressed. When the distance between the upper clamping member 111 and the lower clamping member 112 is increased, the length of the accommodation groove becomes longer, and the front and rear ends of the battery cell are released. The positive reset member 19 of the upper clamping member 111 can make the upper clamping member 111 reset after pressing or releasing the rear end of the battery cell, and provide an elastic force for pressing the battery cell forward along the Y-axis. The positive reset member 19 of the lower clamping member 112 can make the lower clamping member 112 reset after pressing or releasing the front end of the battery cell, and provide an elastic force for pressing the battery cell backward along the Y-axis.

[0063] When the battery or battery cell is loaded into the box body, the box body covers the sub-tray 2 from top to bottom and then turns the box body and the sub-tray together by 180 degrees. The turned sub-tray 2 is located at the top of the box body. Finally, the sub-tray 2 is taken out, and each battery cell falls to the bottom of the box body, completing the loading of the battery cell or battery cells into the box.

[0064] The follower 9 can be selected as a pin structure. A follower 9 is arranged upward in the middle of each length fixture 11. A follower hole 17 is opened in the middle of the width fixture 3. The follower 9 is matched with the follower hole 17, so that the length fixture 11 and the width fixture 3 move together, improving the clamping accuracy and synchronous movement accuracy of the two for the corresponding battery cells.

[0065] In this embodiment, the width elastic connection unit 6, the length elastic connection unit 10, the first elastic member 18, the first elastic member 18 and the positive reset member 19 can all be selected as elastic structures such as springs to provide elastic force.

[0066] As Figure 8 shown, a third elastic member 20 is also connected between the connection seat 12 and the sub-tray 2 to buffer the pulling force or pushing force of the clamping arm or the external force mechanism on the connecting shaft.

[0067] In this embodiment, it can be selected that the elastic force provided by the width elastic connection unit 6 of the first linkage limit mechanism 4 is greater than that of the width elastic connection unit 6 of the second linkage limit mechanism 5.

[0068] The limiting unit 7 is in a "cross" shape structure. The limiting unit 7 of the first linkage limiting mechanism 4 is integrally fixed at the middle position of the sub-tray 2. The width elastic connection unit 6 located in the middle is fixed on the limiting unit 7 of the first linkage limiting mechanism 4 and is installed together at the middle position of the sub-tray 2. The limiting unit 7 of the second linkage limiting mechanism 5 can move left and right along the slide rail in the X-axis direction. The limiting units 7 of the first linkage limiting mechanism 4 and the second linkage limiting mechanism 5 are the same. The limiting unit 7 has a track that can provide the clamping arm 31 to move reciprocally left and right, and there are bumps at both left and right ends of the track to limit the moving range of the clamping arm 31.

[0069] In this embodiment, a bracket for further positioning the battery or cell can be provided inside the width clamp 3, and the bracket can be provided with grooves adapted to the shape and size of the cell.

[0070] In this embodiment, a placement groove 16 for placing a water-cooled plate is formed between two adjacent width clamps 3. The distance between two width clamps 3, that is, the distance between the clamping arms 31 of two different width clamps 3, expands or contracts the placement groove 16 with the change of the position adjustment component, so as to release or clamp the water-cooled plate. The split support block 15 can separate the two clamping arms 31 to further control the distance between two adjacent width clamps, prevent two adjacent width clamps from approaching infinitely, and at the same time protect the water-cooled plate placed in the placement groove 16 to avoid damage caused by excessive extrusion.

[0071] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A high-precision assembly mechanism for a battery module, characterized in that, Comprising: Mother tray; Sub-tray; Length limiting component, at least two length clamps that can move in the X-axis direction of the mother tray; Width limiting component, including at least two width clamps that can move in the X-axis direction of the sub-tray; Position adjusting component, including a first linkage limiting mechanism fixed on the sub-tray, at least two second linkage limiting mechanisms movably arranged on the sub-tray; at least two of the second linkage limiting mechanisms are symmetrically arranged with respect to the first linkage limiting mechanism; two adjacent width clamps arranged in the middle are connected by the first linkage limiting mechanism, and the remaining adjacent two width clamps are all connected by the corresponding second linkage limiting mechanism to adjust the distance between each adjacent two width clamps; Side pressing component, arranged on the outside of the width limiting component, used to urge each width clamp to move synchronously towards the center to squeeze or to move synchronously away from the center.

2. The high-precision assembly mechanism of the battery module according to claim 1, wherein Both the first linkage limiting mechanism and the second linkage limiting mechanism include a width elastic connection unit and a limiting unit; two adjacent width clamps are connected by the width elastic connection unit and two adjacent width clamps are both partially located within the limiting unit.

3. The high-precision assembly mechanism of the battery module according to claim 2, wherein The width elastic connection unit of the first linkage limiting mechanism is arranged on the limiting unit and is fixed on the sub-tray together, and the width elastic connection unit of the second linkage limiting mechanism is arranged on the limiting unit and is movably arranged on the sub-tray together.

4. The high-precision assembly mechanism of the battery module according to claim 1, wherein It further includes a third limiting mechanism, and a part of the second linkage limiting mechanism is arranged within the third limiting mechanism to limit the maximum displacement amount of the second linkage limiting mechanism moving in the X-axis direction.

5. The high-precision assembly mechanism of the battery module according to claim 1, wherein Each length clamp is correspondingly arranged with a width clamp, and the length clamp and the width clamp are connected by a follower, so that the length clamp and the width clamp can move synchronously along the X-axis direction.

6. The high-precision assembly mechanism of the battery module according to claim 1, wherein Two adjacent length clamps are connected by a length elastic connection unit.

7. The high-precision assembly mechanism of the battery module according to claim 6, wherein Two adjacent length clamps are all connected by the corresponding length elastic connection unit that can move along the X-axis direction, wherein the length elastic connection unit located on the center line is fixed on the mother tray.

8. The high-precision assembly mechanism of the battery module according to claim 1, wherein Each width clamp includes at least two clamping arms; The clamping arms close to the side pressing component are all provided with the corresponding limiting unit in the second linkage limiting mechanism.

9. The high-precision assembly mechanism of the battery module according to claim 8, wherein the side pressing assembly includes a connecting seat and a side pressing plate movably arranged on the sub-tray, the connecting seat can move along the X-axis on the sub-tray; the side pressing plate is connected to the connecting seat through a first elastic member to urge the side pressing plate to press towards the width fixture.

10. The high-precision assembly mechanism of the battery module according to claim 9, wherein the limiting unit is provided with a split support block, and the split support block separately separates all the clamping arms in the same limiting unit; wherein, the limiting unit close to the side pressing assembly is connected to the connecting seat through a second elastic member.

11. The high-precision assembly mechanism of the battery module according to claim 1, wherein the mother tray is arranged at the bottom of the sub-tray, and part of the length fixtures on the mother tray can pass through the sub-tray to limit the length of the battery cells on the sub-tray.

12. The high-precision assembly mechanism of the battery module according to claim 1, wherein the area between two adjacent width fixtures forms a placement groove and the area between the side pressing assembly and the width fixture forms a placement groove.

13. The high-precision assembly mechanism of the battery module according to claim 4, wherein the third limiting mechanism includes a first convex block and a second convex block, the first convex block is arranged on one of the width fixtures, and the second convex block is arranged on another adjacent width fixture.

14. The high-precision assembly mechanism of the battery module according to claim 1, wherein the length fixture includes an upper clamping member and a lower clamping member both movable along the Y-axis direction, and the upper clamping member and the lower clamping member are both connected with a positive reset member.

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