Pre-pressing device

Abstract

The pre-pressing device comprises a supporting mechanism and a plurality of pre-pressing mechanisms, and the pre-pressing mechanisms are arranged on the supporting mechanism; the pre-pressing mechanism comprises a pre-pressing unit, a first driving part and two pre-pressing supporting parts, one battery cell module is placed on each pre-pressing supporting part, and the pre-pressing unit is arranged to pre-press the battery cell modules in the first direction; the first driving part is connected with one of the pre-pressing supporting parts so as to drive the pre-pressing supporting part to move in opposite directions relative to the other pre-pressing supporting part in the second direction, so that the two battery cell modules are attached to each other; the first direction is perpendicular to the second direction. The first driving part drives the battery cell modules to move in the second direction through the pre-pressing supporting part, so that the two rows of battery cell modules are combined, the battery cell modules are pre-pressed through the pre-pressing unit in the first direction, double-channel production and pre-pressing are achieved in a limited space, and the production efficiency is greatly improved. And a plurality of pre-pressing mechanisms are arranged in the pre-pressing device and can be independently and synchronously operated, so that the stations and the working procedures are effectively optimized.

Description

Technical Field

[0001] The present application relates to the field of battery processing technology, and in particular to a pre-pressing device. Background Art

[0002] In the current battery assembly manufacturing process, cell stacking and pre-pressing are two crucial processes, and the above two processes are usually carried out continuously at the same workstation. Cell stacking is to stack multiple cells together in a predetermined arrangement to form the basic structure of the battery assembly. Pre-pressing is to ensure the compactness and stability of the stacked cells, reduce internal gaps, and then make the contact between the cells more uniform by applying a certain pressure, thereby improving the overall performance and safety of the battery assembly.

[0003] However, this method of continuous stacking and pre-pressing at the same station has obvious efficiency bottlenecks. For example, the stacking process requires precise arrangement and fixation of the battery cells, while the pre-pressing process requires continuous pressure application and maintenance for a certain period of time to ensure a close fit between the battery cells. Both processes require a relatively long time to complete. Therefore, completing two processes at the same station will extend the production cycle and reduce overall production efficiency.

[0004] In related technologies, some manufacturers in the industry have tried to separate the stacking process and the pre-pressing process to make full use of production equipment, shorten the production cycle, and improve production efficiency. With the continuous development of battery assembly technology, new requirements have been put forward for the arrangement of battery cells and the pre-pressing mechanism. In the past, battery assemblies mostly adopted a single-row arrangement of battery cells, and the pre-pressing mechanism pre-pressed the single-row battery cells in a targeted manner.

[0005] With the continuous improvement of battery module capacity and optimization of structure, a double-row battery cell arrangement has emerged, which can make more effective use of space and improve the energy density of battery modules. Therefore, it also poses new challenges to the pre-loading mechanism.

[0006] Therefore, separating the cell stacking process from the pre-pressing process and designing a mechanism suitable for double-row cell pre-pressing have become technical issues that need to be urgently addressed in the current battery assembly manufacturing process. Summary of the invention

[0007] The present application provides a pre-pressing device with rationally designed workstations and processes, and is capable of pre-pressing double-row battery cell modules at the same time, effectively improving the performance and production efficiency of battery components.

[0008] The present application provides a pre-pressing device for pre-pressing a battery assembly, wherein the battery assembly includes a steel strip, a battery cell module, and a module end plate, and the pre-pressing device includes a supporting mechanism and a plurality of pre-pressing mechanisms, wherein the pre-pressing mechanism is arranged on the supporting mechanism;

[0009] The pre-pressing mechanism comprises a pre-pressing unit, a first driving part and two pre-pressing supporting parts, each of the pre-pressing supporting parts is provided with a battery cell module, and the pre-pressing unit is configured to pre-press the battery cell module along a first direction;

[0010] The first driving part is connected to one of the pre-compression support parts to drive it to move toward the other pre-compression support part along the second direction so that the two battery cell modules are fitted; wherein the first direction and the second direction are perpendicular to each other.

[0011] In a possible implementation, the pre-pressing support portion includes a module support plate and a plurality of first suction cups, the module support plate is movably disposed on the pre-pressing unit, the plurality of first suction cups are disposed on the module support plate, and the plurality of first suction cups adsorb the battery cell module.

[0012] In a possible implementation, the pre-pressing support portion includes a first sensing element, the first sensing element is disposed on the module support plate, and the first sensing element is configured to detect the steel belt, which is disposed on the outer sides of the two pre-pressing support portions.

[0013] In a possible implementation, the first driving portion includes a first driving element and at least one first sliding portion;

[0014] The first driving element is configured to drive the module support plate of one of the pre-stressing support parts to move toward the module support plate of the other pre-stressing support part; wherein the module support plate of one of the pre-stressing support parts is slidably connected to the pre-stressing unit via the first sliding part.

[0015] In a possible implementation, the pre-pressing unit includes a pre-pressing platform, a pre-pressing driving part, a first pre-pressing part, and a second pre-pressing part, wherein the first pre-pressing part and the second pre-pressing part are arranged on both sides of the pre-pressing support part along the first direction, so that the battery cell module is sandwiched between the first pre-pressing part and the second pre-pressing part;

[0016] The pre-stressing support part and the first driving part are respectively arranged on the pre-stressing platform, the pre-stressing platform is movably arranged on the supporting mechanism, at least one of the second pre-stressing part and the first pre-stressing part is movably arranged on the pre-stressing platform, the pre-stressing driving part is arranged on the supporting mechanism, and the pre-stressing driving part can drive the first pre-stressing part to move along the first direction to pre-stress the battery cell module.

[0017] In a possible implementation, the pre-pressing platform includes a first pre-pressing support plate and a second pre-pressing support plate;

[0018] The pre-compression support part and the first driving part are respectively arranged on the first pre-compression support plate, the second pre-compression support plate is arranged on a side of the first pre-compression support plate away from the first driving part, and the first pre-compression support plate is movably arranged on the second pre-compression support plate.

[0019] In a possible implementation, the pre-stressing unit includes a second driving part, which is arranged on the first pre-stressing support plate, and the second driving part and the second pre-stressing part are arranged opposite to each other along the first direction, so that the driving end of the second driving part can abut against the second pre-stressing part to push the first pre-stressing support plate.

[0020] In a possible implementation, the first pre-pressing portion includes a first pre-pressing bracket, a pressure detection unit, and a first pre-pressing plate;

[0021] The first pre-compression bracket is connected to the second pre-compression support plate, the driving end of the pre-compression driving unit can pass through the first pre-compression bracket to be connected to the pressure detection unit, the pressure detection unit is connected to the first pre-compression plate, and the first pre-compression plate is configured to absorb the module end plate;

[0022] The pre-pressing driving unit can drive the pressure detection unit to move, and the pressure detection unit drives the first pre-pressing plate to move, so that the first pre-pressing plate pre-presses the battery cell module, and the pressure detection unit is configured to monitor the pre-pressing force.

[0023] In a possible implementation, the pressure detection unit includes a pressure detection element, a first mounting plate, and a second mounting plate;

[0024] The driving end of the pre-stressing driving part passes through the first pre-stressing bracket and is connected to the first mounting plate, the first mounting plate and the second mounting plate are connected, and the pressure detecting element is clamped between the first mounting plate and the second mounting plate; wherein the first pre-stressing plate is mounted on the second mounting plate.

[0025] In a possible implementation, the pressure detection unit includes a second sliding portion, and the first mounting plate is slidably connected to the second pre-pressure support plate via the second sliding portion.

[0026] In a possible implementation, the first pre-compression plate includes a first pre-compression plate and a plurality of second suction cups, the first pre-compression plate is connected to the pressure detection unit, the plurality of second suction cups are spaced apart on the first pre-compression plate, and the plurality of second suction cups are configured to adsorb the module end plate.

[0027] In a possible implementation, the first pre-compression plate further includes two first clamping bodies, the two first clamping bodies are disposed on both sides of the first pre-compression plate along the second direction, and the two first clamping bodies are configured to clamp the module end plate.

[0028] In a possible implementation, the first pre-pressing portion further includes a second sensing element, the second sensing element is disposed on the first pre-pressing plate, and the second sensing element is configured to detect the module end plate.

[0029] In a possible implementation, the second pre-pressing portion includes a second pre-pressing bracket and a second pre-pressing plate;

[0030] The second pre-compression bracket is connected to the second pre-compression support plate, the second pre-compression plate is connected to the second pre-compression bracket, and the second pre-compression plate is configured to absorb another module end plate.

[0031] In a possible implementation, the second pre-compression plate includes a second pre-compression plate and a plurality of third suction cups, the second pre-compression plate is connected to the second pre-compression bracket, the plurality of third suction cups are arranged on the second pre-compression plate, and the plurality of third suction cups are arranged to adsorb another module end plate.

[0032] In a possible implementation, the second pre-compression plate further includes two second clamping bodies, which are disposed on both sides of the second pre-compression plate along the second direction, and the two second clamping bodies are configured to clamp the module end plate.

[0033] In a possible implementation, the second pre-pressing portion includes a third sensing element, the third sensing element is disposed on the second pre-pressing plate, and the third sensing element is configured to detect another module end plate.

[0034] In a possible implementation, the second pre-stressing part includes a shape-changing part, and the second pre-stressing plate is connected to the second pre-stressing bracket through the shape-changing part; wherein the shape-changing part is used to extend the length of the second pre-stressing part along the first direction, so that the second pre-stressing part can be connected to the battery cell module.

[0035] In a possible implementation, the pre-pressing unit includes at least one pre-pressing positioning portion, and the second pre-pressing support plate is positioned and connected to the support mechanism via the pre-pressing positioning portion.

[0036] In a possible implementation, the pre-pressing device includes a transmission mechanism, the transmission mechanism is disposed on the support mechanism, and the second pre-pressing support plate is slidably connected to the support mechanism via the transmission mechanism.

[0037] In a possible implementation, the transmission mechanism includes a third sliding portion, and the second pre-compression support plate is slidably connected to the support mechanism via the third sliding portion.

[0038] In a possible implementation, the transmission mechanism includes a driving unit, which is respectively connected to the second pre-compression support plate and the third sliding portion, and the driving unit can drive the second pre-compression support plate to slide on the third sliding portion.

[0039] In a possible implementation, the driving unit includes a third driving part, the third driving part is connected to the second pre-compression support plate and the third sliding part respectively, and the third driving part can drive the second pre-compression support plate to move.

[0040] In a possible implementation, the driving unit includes a transmission rack and a transmission gear, the driving end of the third driving part passes through the second pre-compression support plate and is connected to the transmission gear, the transmission gear is meshed and connected with the transmission rack, and the transmission rack is provided on the support mechanism or the third sliding part;

[0041] The third driving part is used to drive the transmission gear to move on the transmission rack, thereby driving the second pre-compression support plate to slide on the third sliding part.

[0042] In a possible implementation, the transmission mechanism includes a traction assembly and a first support frame, the first support frame is connected to the second pre-compression support plate, the traction assembly is arranged on the support mechanism, and the traction assembly is connected to the first support frame;

[0043] When the second pre-compression support plate moves, the traction mechanism guides the second pre-compression support plate to move along the first direction through the first support frame.

[0044] In a possible implementation, the pre-pressing device includes a positioning mechanism, which is mounted to the supporting mechanism; wherein one positioning mechanism is provided on both sides of the pre-pressing mechanism along the second direction, and the positioning mechanism is positioned and fitted with the corresponding battery cell module.

[0045] In a possible implementation, the positioning mechanism includes a second support frame, a fourth drive unit and a positioning plate, the fourth drive unit is arranged on the second support frame, the fourth drive unit is connected to the positioning plate, and the fourth drive unit is arranged to drive the positioning plate to move along the second direction so that the positioning plate fits the battery cell module.

[0046] In a possible implementation, the positioning mechanism includes a guide portion, the guide portion is disposed on the second support frame, and the guide portion is configured to limit the movement of the positioning plate along the second direction.

[0047] In a possible implementation, the pre-pressing device includes a scanning mechanism, which is disposed on the supporting mechanism and is configured to scan the battery assembly.

[0048] In a possible implementation, the scanning mechanism includes a collection unit, a third support frame and a first protective cover;

[0049] The third support frame is arranged on the support mechanism, the collection unit is arranged on the third support frame, the first protective cover covers the collection unit and is connected to the third support frame, and the collection unit is used to collect information of the battery module.

[0050] In a possible implementation, the pre-pressing device includes a display unit, and the display unit is disposed on the third support frame.

[0051] In a possible implementation, the support mechanism includes a fourth support frame, a stepping platform, a safety grating, and a second protective cover;

[0052] The stepping platform is arranged on the side of the fourth support frame, and the height of the stepping platform is smaller than the height of the fourth support frame;

[0053] The second protective cover is arranged on the fourth support frame, the safety grating is arranged along the circumference of the fourth support frame, and the safety grating is connected to the second protective cover.

[0054] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0055] The pre-pressing device provided in the embodiment of the present application has a first driving part that drives the battery cell module to move in the second direction through the pre-pressing support part, so that two rows of battery cell modules can be merged, and the battery cell module is pre-pressed in the first direction through the pre-pressing unit, so that dual-channel production and pre-pressing can be achieved in a limited space, greatly improving production efficiency. The pre-pressing device is provided with multiple pre-pressing mechanisms, which can be carried out independently and synchronously, effectively optimizing the workstations and processes. The pre-pressing mechanism pre-presses the battery cell module, and after the battery assembly is squeezed to a certain size, the steel belt is manually put on to complete the assembly, thereby improving the overall performance and safety of the battery assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0057] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0058] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0059] Figure 1 A schematic diagram of the structure of a pre-pressing device provided in an embodiment of the present application;

[0060] Figure 2 A schematic diagram of the structure of the support mechanism provided in the embodiment of the present application;

[0061] Figure 3 A schematic diagram of the structure of the pre-pressing device provided in an embodiment of the present application;

[0062] Figure 4 A schematic diagram of the structure of the pre-pressing mechanism provided in an embodiment of the present application;

[0063] Figure 5 An exploded schematic diagram of the pre-pressing mechanism provided in an embodiment of the present application;

[0064] Figure 6 A schematic diagram of the structure of a second driving unit provided in an embodiment of the present application;

[0065] Figure 7 A schematic diagram of the structure of the pre-pressing positioning portion provided in an embodiment of the present application;

[0066] Figure 8 A schematic diagram of the structure of a battery assembly provided in an embodiment of the present application;

[0067] Fig. 9 A schematic diagram of the structure of the transmission mechanism provided in the embodiment of the present application;

[0068] Fig.10 An exploded schematic diagram of a drive unit provided in an embodiment of the present application;

[0069] Fig.11 A schematic diagram of the structure of a drive unit provided in an embodiment of the present application;

[0070] Fig.12 A schematic diagram of the structure of the positioning mechanism provided in the embodiment of the present application;

[0071] Fig.13 A schematic diagram of the structure of the pre-pressing device provided in an embodiment of the present application;

[0072] Fig.14 A schematic diagram of the structure of the scanning mechanism provided in an embodiment of the present application.

[0073] Description of reference numerals:

[0074] 1. Preloading device; 11. Support mechanism; 111. Fourth supporting frame; 112. Stepping platform; 113. Safety grating; 114. Second protective cover; 1141. Top cover; 1142. Pillar; 1143. Side plate; 12. Preloading mechanism; 121. Preloading unit; 1211. Preloading platform; 12111. First preloading support plate; 12112. Second preloading support plate; 121121. Concave groove; 12113. Auxiliary support plate; 1212. Preloading drive unit; 12121. Driving electric cylinder; 12122. Speed ​​reduction unit; 121221. First fixed block; 121222. Second fixed block; 121223. Coupling; 121224. Speed ​​reducer; 121225. Driving motor; 12123, electric cylinder mounting plate; 1213, first pre-pressing part; 12131, first pre-pressing bracket; 121311, first horizontal plate; 121312, first side plate; 121313, second side plate; 12132, pressure detection unit; 121321, pressure detection element; 121322, first mounting plate; 121323, second mounting plate; 121324, linear bearing; 12133, first pre-pressing plate; 121331, first pre-pressing plate; 1213311, first mounting through hole; 1213312, first avoidance groove; 121332, second suction cup; 121333, first vacuum generator; 121334, first clamping body; 121335, first negative pressure gauge; 12134 , second sensing element; 12135, second sliding part; 121351, first sliding block; 121352, first slide rail; 1214, second pre-pressing part; 12141, second pre-pressing bracket; 121411, second transverse plate; 121412, third side plate; 121413, fourth side plate; 121414, reinforcing boss; 121415, first limiting hole; 12142, second pre-pressing plate; 121421, second pre-pressing plate; 1214211, second mounting through hole; 1214212, second avoidance groove; 121422, third suction cup; 121423, second vacuum generator; 121424, second negative pressure gauge; 121425, second clamping body; 12143, third sensing element; 12144, shape-changing member; 121441, first shape-changing plate; 121442, second shape-changing plate; 121443, shape-changing support plate; 1215, second driving unit; 12151, driving movable rod; 1216, pre-pressing positioning unit; 12161, positioning cylinder; 12162, positioning rod; 12163, positioning base column; 12164, positioning hole; 122, first driving unit; 1221, first driving element; 12211, driving block; 1222, first sliding unit; 12221, second sliding block; 12222, second slide rail; 123, pre-pressing support unit; 1231, module support plate; 12311, third mounting through hole; 12312, fourth mounting through hole; 12313, module sensor;12314, first mounting groove; 12315, second mounting groove; 1232, first suction cup; 1233, first sensing element; 13, transmission mechanism; 131, third sliding part; 1311, third slider; 1312, third slide rail; 132, driving unit; 1321, third driving part; 13211, mobile motor; 13212, mobile reducer; 13213, reducer mounting block; 13214, motor shield; 1322, transmission rack; 1323, transmission gear; 133, traction assembly; 1331, chain; 1332, chain box; 134, first A support frame; 1341, a first plate; 1342, a vertical plate; 1343, a second plate; 14, a positioning mechanism; 141, a second support frame; 1411, a supporting column; 1412, a positioning support plate; 142, a fourth driving unit; 143, a positioning plate; 144, a guide unit; 1441, a guide column; 1442, a guide track; 1443, a baffle; 15, a scanning mechanism; 151, a collection unit; 152, a third support frame; 153, a first protective cover; 16, a display unit; 2, a battery assembly; 21, a steel belt; 22, a battery module; 221, a battery; 23, a module end plate. ; DETAILED DESCRIPTION

[0075] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0076] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0077] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0078] In some exemplary embodiments, Figure 1-Figure 8 As shown, a pre-pressing device 1 is used in a production line of battery assemblies to pre-press battery assemblies 2, thereby improving the overall performance and safety of the battery assemblies.

[0079] The battery assembly 2 includes a steel strip 21, a battery module 22 and a module end plate 23. The battery module 22 is provided in two groups. The two groups of battery modules 22 are arranged along the second direction (refer to Figure 1 The performance of the battery assembly 2 is effectively improved. Each battery module 22 includes a plurality of battery cells 221, and the plurality of battery cells 221 are arranged along a first direction (refer to the Y axis shown in FIG. Figure 1 The battery cells 221 are arranged in sequence along the X-axis shown in the figure. For example, the number of battery cells 221 can be 10, 12, 15, etc., which shall be subject to the actual situation. For example, two module end plates 23 are provided. The two module end plates 23 are arranged on both sides of the battery cell module 22 along the first direction, and the module end plates 23 are connected to the battery cell module 22 located on the outermost side. The steel belt 21 is sleeved on the outside of the battery cell module 22 and the module end plate 23 to fasten the battery cell module 22 and the module end plate 23 to form a stable structure. Among them, a partition (not shown in the figure) will be arranged between the two groups of battery cell modules 22 along the second direction to separate the two groups of battery cell modules 22 and improve the safety of the battery assembly 2.

[0080] The pre-pressing device 1 includes a supporting mechanism 11 and a plurality of pre-pressing mechanisms 12. The pre-pressing mechanism 12 is arranged on the supporting mechanism 11. The supporting mechanism 11 is used to support the pre-pressing mechanism 12 and improve the stability of the pre-pressing mechanism 12. Among them, the number of pre-pressing mechanisms 12 can be two, three, etc., which shall be subject to the actual situation. In this embodiment, two are taken as an example for further explanation. The two pre-pressing mechanisms 12 are arranged in sequence along the second direction, and a battery assembly 2 is arranged on each pre-pressing mechanism 12, which is separated from the traditional stacking process and does not interfere with each other, thereby realizing the rational design of the workstations and processes and effectively improving the production efficiency.

[0081] In this embodiment, if Figure 3-Figure 8 As shown, each pre-pressing mechanism 12 includes a pre-pressing unit 121, a first driving unit 122 and two pre-pressing support parts 123, and each pre-pressing support part 123 is provided with a battery cell module 22 to support and fix the battery cell module 22 and improve the stability of the battery cell module 22. The pre-pressing unit 121 pre-presses the battery cell module 22 along a first direction to reduce the gap between two adjacent battery cells 221 and improve the overall performance and safety of the battery assembly 2.

[0082] The first driving part 122 pushes one of the pre-pressing support parts 123 to move toward the other pre-pressing support part 123 along the second direction, so that the two groups of battery modules 22 are fitted together, thereby reducing the gap between the two groups of battery modules 22. Before the two groups of battery modules 22 are fitted together and pre-pressed, a partition is placed between them to ensure that the two groups of battery modules 22 will not directly contact each other during the fitting process, thereby improving the safety of the battery assembly 2. The first direction and the second direction are perpendicular to each other, that is, the first direction is the direction of the first horizontal movement, and the second direction is the direction of the second horizontal movement.

[0083] The battery assembly 2 is placed on the pre-pressing mechanism 12, and the cell modules 22 are placed on the two pre-pressing support parts 123 respectively. The pre-pressing unit 121 is started to pre-press the cell modules 22 along the first direction to reduce the gaps between the cell modules 22. The first driving part 122 is started to push one of the pre-pressing support parts 123 to move along the second direction to make the two groups of cell modules 22 fit together. At this time, the partition is located between the two groups of cell modules 22. The pre-pressing state is maintained for a period of time to ensure that the gaps between the cell modules 22 are fully compressed.

[0084] The pre-pressing device 1 of this embodiment can effectively pre-press the battery assembly 2, thereby improving the overall performance and safety of the battery assembly 2. At the same time, the rational design of the workstations and processes also effectively improves production efficiency.

[0085] In some exemplary embodiments, Figure 3-Figure 8As shown, the pre-pressing support part 123 includes a module support plate 1231 and a plurality of first suction cups 1232, and the module support plate 1231 is movably arranged on the pre-pressing unit 121, wherein the module support plate 1231 of one pre-pressing support part 123 is connected to the first driving part 122, and the module support plate 1231 of another pre-pressing support part 123 is fixedly connected to the pre-pressing unit 121.

[0086] Of course, it is understandable that one of the two pre-pressing support parts 123 can be one as described above, in which one pre-pressing support part 123 is movably arranged on the pre-pressing unit 121, and the other pre-pressing support part 123 is fixedly arranged on the pre-pressing unit 121 to realize unidirectional pre-pressing movement, which is simple, fast and easy to implement. Alternatively, both pre-pressing support parts 123 can also be movably arranged on the pre-pressing unit 121, so as to adjust the position of each pre-pressing support part 123 respectively, such as adjusting the pre-pressing support parts 123 to move toward each other, so as to complete the pre-pressing process, and further improve the pre-pressing effect.

[0087] A plurality of third mounting through holes 12311 are provided on the module support plate 1231, and the plurality of third mounting through holes 12311 are arranged sequentially along the first direction. A plurality of first suction cups 1232 are correspondingly arranged in the third mounting through holes 12311 of the module support plate 1231, and the plurality of first suction cups 1232 are used to adsorb the battery cell module 22 to achieve the stability of the battery cell module 22.

[0088] It should be noted that the first suction cup 1232 is equipped with a vacuum generator, a negative pressure gauge and other components to cooperate with each other to further achieve the adsorption effect. The specific implementation method is described in the following embodiments, and the relevant contents are described here.

[0089] In addition, it should be noted that the module support plate 1231 is also provided with a fourth mounting through hole 12312, and a module sensor 12313 can be provided in the fourth mounting through hole 12312, so as to detect the battery module 22 and determine whether the battery module 22 is installed in place. The module sensor 12313 can be one or more, so as to detect whether the battery modules 22 at different positions are installed in place.

[0090] In this embodiment, if Figure 3-Figure 8As shown, the pre-pressing support portion 123 includes a first sensing element 1233, and the first sensing element 1233 is arranged on the module support plate 1231. Exemplarily, the module support plate 1231 is provided with a first mounting groove 12314, and the first sensing element 1233 is arranged in the first mounting groove 12314, and the height of the first sensing element 1233 is lower than or equal to the depth of the first mounting groove 12314, so as to prevent the first sensing element 1233 from passing through the module support plate 1231 and affecting the placement of the battery module 22.

[0091] The first sensing element 1233 is used to detect the steel belt 21 to ensure that the steel belt 21 is installed in place. Among them, one or more first sensing elements 1233 can be set, and multiple first sensing elements 1233 are arranged along the circumference of the pre-pressing support part 123 to improve the accuracy of detection. The steel belt 21 is set on the outside of the two pre-pressing support parts 123, that is, it can be sleeved on the side walls of the two pre-pressing support parts 123, so that the steel belt 21 is pre-buried, so that it can be sleeved on the battery module 22 and the module end plate 23 later.

[0092] In this embodiment, if Figure 3-Figure 8 As shown, the first driving portion 122 includes a first driving element 1221 and a first sliding portion 1222 .

[0093] The first driving element 1221 is, for example, a driving cylinder, and the cylinder body of the first driving element 1221 is connected to the driving unit 121, and the driving end of the first driving element 1221 is connected to the module support plate 1231 of one of the pre-stressing support parts 123, so as to drive the module support plate 1231 of one of the pre-stressing support parts 123 to move relative to the module support plate 1231 of the other pre-stressing support part 123. Exemplarily, a driving block 12211 is provided on the driving end of the first driving element 1221, and a second mounting groove 12315 is provided on the module support plate 1231, and at least a part of the structure of the driving block 12211 can be inserted into the second mounting groove 12315. When the driving end of the first driving element 1221 drives the driving block 12211 to move, the driving block 12211 drives the module support plate 1231 to move through the second mounting groove 12315.

[0094] In order to further limit the movement path, the module support plate 1231 of one of the pre-compression support parts 123 is slidably connected to the driving unit 121 through the first sliding part 1222. Exemplarily, the first sliding part 1222 includes, for example, a second slider 12221 and a second slide rail 12222, the second slide rail 12222 is fixedly connected to the driving unit 121, the second slider 12221 is fixedly connected to the module support plate 1231, and the second slider 12221 is slidably connected to the driving unit 121. The first sliding part 1222 can not only provide support for the module support plate 1231, but also realize the sliding of the module support plate 1231, so as to ensure that the module support plate 1231 can move along the second direction.

[0095] It should be noted that the first sliding portion 1222 may be one or more, and the multiple first sliding portions 1222 are arranged in sequence along the first direction to provide stable support for the module support plate 1231 .

[0096] In some exemplary embodiments, Figure 3-Figure 8 As shown, the pre-pressing unit 121 includes a pre-pressing platform 1211 , a pre-pressing driving part 1212 , a first pre-pressing part 1213 and a second pre-pressing part 1214 . The first pre-pressing part 1213 and the second pre-pressing part 1214 are arranged opposite to each other along a first direction for pre-pressing the battery module 22 .

[0097] The prestressing support part 123 and the first driving part 122 are respectively arranged on the prestressing platform 1211. The prestressing platform 1211 provides a stable support platform for the prestressing support part 123. The first driving part 122 provides a driving force in the first direction to realize the prestressing of the battery assembly 2 in the first direction. The first driving part 122, for example, includes a driving cylinder, which is installed on the prestressing platform 1211. The driving end of the driving cylinder is connected to one of the prestressing support parts 123, so that the driving cylinder can apply a driving force to the corresponding prestressing support part 123 to promote its movement, thereby driving the battery cell module 22 to move on the prestressing platform 1211 to realize prestressing in the second direction.

[0098] The support mechanism 11 serves as the basis of the entire pre-pressing device and provides a stable support environment. The pre-pressing platform 1211 provides support for the pre-pressing support portion 123 and the battery cell module 22. The pre-pressing platform 1211 is movably arranged on the support mechanism 11 so that the pre-pressing platform 1211 can move to a target position to facilitate the pre-pressing process.

[0099] The second pre-pressing part 1214 is connected to the pre-pressing platform 1211 and is disposed on the side of the battery assembly 2 to pre-press the two groups of battery modules 22. The second pre-pressing part 1214 can be in a fixed state so that the two groups of battery modules 22 can fit to the second pre-pressing part 1214 to achieve positioning or limiting.

[0100] The first pre-pressing part 1213 is movably disposed on the pre-pressing platform 1211. The first pre-pressing part 1213 is in a movable state and can push the two groups of battery cell modules 22 toward the second pre-pressing part 1214 to pre-press them. The pre-pressing driving part 1212 is disposed on the supporting mechanism 11. The driving end of the pre-pressing driving part 1212 can drive the first pre-pressing part 1213 to move along the first direction, thereby pushing the two groups of battery cell modules 22.

[0101] Exemplarily, the prestressing drive unit 1212 includes a driving electric cylinder 12121, the driving end of the driving electric cylinder 12121 is movably arranged, and the cylinder body of the driving electric cylinder 12121 is connected to the first prestressing unit 1213 through an electric cylinder mounting plate 12123. The driving electric cylinder 12121 has a low cost and can achieve high efficiency and energy saving of the prestressing drive unit 1212. The linear drive of the prestressing drive unit 1212 can be completed simply and steadily, and has a high conversion efficiency.

[0102] The preload drive unit 1212 further includes a reduction unit 12122 to achieve smooth power transmission and effective speed control. The reduction unit 12122 includes a first fixed block 121221, a second fixed block 121222, a coupling 121223, a reducer 121224 and a drive motor 121225. The first fixed block 121221 is fixedly connected to the drive electric cylinder 12121.

[0103] The second fixed block 121222 is connected to the first fixed block 121221 through a coupling 121223. As an elastic or rigid connecting device, the coupling 121223 can ensure the effective connection between the first fixed block 121221 and the second fixed block 121222 while absorbing and compensating for the axial, radial and angular displacements caused by manufacturing and installation errors, vibrations during operation, temperature changes and other factors, thereby ensuring the continuity and smoothness of power transmission.

[0104] The reducer 121224 is connected to the second fixed block 121222. The reducer 121224 converts the input high-speed and low-torque power into a low-speed and high-torque output through a series of gears, worm gears and other transmission mechanisms to meet the specific requirements for speed and power in practical applications.

[0105] The driving motor 121225 serves as the power source of the entire preloading driving unit 1212, and the driving motor 121225 is directly connected to the reducer 121224. By accurately controlling the speed and direction of the driving motor 121225, the size and direction of the output power of the preloading driving unit 1212 can be flexibly adjusted.

[0106] Start the first drive unit 122, and merge the two groups of battery modules 22 through the pre-pressing support unit 123 to make them initially fit. Start the pre-pressing drive unit 1212, drive the first pre-pressing unit 1213 to move along the first direction, and push the battery module 22 toward the second pre-pressing unit 1214 for pre-pressing. During the pre-pressing process, the output force of the pre-pressing drive unit 1212 can be adjusted as needed to ensure that the battery module 22 is subjected to uniform and appropriate pressure. When the battery module 22 reaches the predetermined pre-pressing effect, turn off the pre-pressing drive unit 1212.

[0107] The pre-pressing device 1 in this embodiment has the advantages of simple structure, easy operation, high efficiency and energy saving, etc. The pre-pressing driving part 1212 uses a driving cylinder as a driving component, which has low cost and can achieve high efficiency and energy saving pre-pressing operation. The pre-pressing platform 1211 and the pre-pressing support part 123 can ensure the stability of the battery module 22 during the pre-pressing process, avoiding the problem of uneven pre-pressing caused by shaking or deviation.

[0108] In this embodiment, if Figure 3-Figure 8 As shown, the pre-stressing platform 1211 includes a first pre-stressing support plate 12111 and a second pre-stressing support plate 12112, and the pre-stressing support part 123 and the first driving part 122 are respectively arranged on the first pre-stressing support plate 12111. Among them, the module support plate 1231 of one of the pre-stressing support parts 123 is connected to the first driving part 122, so as to drive one of the pre-stressing support parts 123 to move, and an auxiliary support plate 12113 can be arranged under the other pre-stressing support part 123, and the other pre-stressing support part 123 is fixedly connected to the first pre-stressing support plate 12111 through the auxiliary support plate 12113 to raise the pre-stressing support part 123, so that the heights of the two pre-stressing support parts 123 can be kept flush, so as to avoid height deviation of the battery cell module 22 during pre-stressing.

[0109] The second pre-compression support plate 12112 is disposed on a side of the first pre-compression support plate 12111 away from the first driving portion 122 , namely, below the first pre-compression support plate 12111 . The first pre-compression support plate 12111 is movably disposed on the second pre-compression support plate 12112 .

[0110] The first sliding part 1222 is slidably connected to the first pre-compression support plate 12111. The second slide rail 12222 of the first sliding part 1222 is fixedly connected to the first pre-compression support plate 12111, the second slider 12221 of the first sliding part 1222 is fixedly connected to the module support plate 1231, and the second slider 12221 is slidably connected to the first pre-compression support plate 12111.

[0111] Among them, the cylinder body of the first driving element 1221 of the first driving part 122 is connected to the second pre-stressing support plate 12112, and the driving end of the first driving element 1221 is connected to the module support plate 1231 of one of the pre-stressing support parts 123 to facilitate driving them to move, so that the module support plate 1231 of one of the pre-stressing support parts 123 moves toward the module support plate 1231 of the other pre-stressing support part 123.

[0112] Exemplarily, the prestressing unit 121 includes a second driving part 1215, and the second driving part 1215 is, for example, a driving cylinder. The cylinder body of the second driving part 1215 is fixedly connected to the first prestressing support plate 12111, and the driving end of the second driving part 1215 is a driving movable rod 12151. The second driving part 1215 and the second prestressing part 1214 are arranged relative to each other along a first direction, so that the driving movable rod 12151 can be extended and abutted against the second prestressing part 1214. When extended to a certain length, the driving movable rod 12151 and the second prestressing part 1214 resist each other, generate opposite forces, and then push the first prestressing support plate 12111 to move. The first prestressing support plate 12111 drives the prestressing support part 123 to move toward the first prestressing part 1213, thereby realizing prestressing of the battery cell module 22.

[0113] Among them, the driving end of the second driving part 1215 can directly abut against the second pre-pressing part 1214 to generate a force, and a first limiting hole 121415 can be set on the second pre-pressing part 1214, and the driving end of the second driving part 1215 can extend into the first limiting hole 121415 to limit the driving end of the second driving part 1215, thereby ensuring that the force is parallel to the first direction and avoiding deviation of the pre-pressure when pre-pressing the battery cell module 22.

[0114] It should be noted that the first limiting hole 121415 can be directly formed in the second pre-pressing portion 1214, or a reinforcing boss 121414 can be provided to protrude from the second pre-pressing portion 1214, and the first limiting hole 121415 is formed on the reinforcing boss 121414 to avoid damaging the overall strength of the second pre-pressing portion 1214 and extend the service life of the second pre-pressing portion 1214.

[0115] The prestressing device 1 in this embodiment can arrange the first driving part 122, the second driving part 1215 and the prestressing driving part 1212 at different levels by using the first prestressing support plate 12111 and the second prestressing support plate 12112, so that the first driving part 122, the second driving part 1215 and the prestressing driving part 1212 can generate prestressing in the first direction and the second direction on the battery cell module 22, further improving the prestressing effect, ensuring that the gaps between the battery cells 221 can be eliminated, and improving the overall performance and safety of the battery assembly 2.

[0116] In some exemplary embodiments, Figure 3-Figure 8 As shown, the first pre-pressing part 1213 includes a first pre-pressing bracket 12131 , a pressure detection unit 12132 and a first pre-pressing plate 12133 , which work together to achieve pre-pressing of the battery cell module 22 and fixation of the module end plate 23 .

[0117] The first pre-stressing bracket 12131 is connected to the second pre-stressing support plate 12112. The first pre-stressing bracket 12131 can be fixedly connected to the second pre-stressing support plate 12112 by welding, bonding or screwing, so as to improve the stability of the connection between the first pre-stressing bracket 12131 and the second pre-stressing support plate 12112.

[0118] Exemplarily, the first pre-stressing bracket 12131 includes, for example, a first transverse plate 121311, a first side plate 121312 and two second side plates 121313. The first transverse plate 121311 is fixedly connected to the second pre-stressing support plate 12112, the lower end of the first side plate 121312 is fixedly connected to the first transverse plate 121311, the two second side plates 121313 are arranged on both sides along the second direction, the second side plates 121313 are respectively fixedly connected to the first transverse plate 121311 and the first side plate 121312, and the second side plates 121313 are, for example, triangular in shape, so that the first pre-stressing bracket 12131 achieves non-deformability, balance and high support, and can remain stable when the first pre-stressing bracket 12131 is subjected to external forces.

[0119] The cylinder body of the pre-stressing driving unit 1212 is fixedly connected to the first side plate 121312 of the first pre-stressing bracket 12131, and the driving end of the pre-stressing driving unit 1212 can movably pass through the first side plate 121312 of the first pre-stressing bracket 12131 and be connected to the pressure detection unit 12132. The pressure detection unit 12132 is connected to the first pre-stressing plate 12133, and the first pre-stressing plate 12133 is used to adsorb the module end plate 23.

[0120] The module end plate 23 can be connected to the battery module 22, and the driving end of the pre-pressing driving part 1212 can drive the pressure detection unit 12132 to make linear motion. The pressure detection unit 12132 drives the first pre-pressing plate 12133 to move synchronously, so that the first pre-pressing plate 12133 pre-presses the battery module 22, reducing the gap between the battery modules 22 and the gap between the module end plate 23 and the battery module 22. Among them, the pressure detection unit 12132 can monitor the pre-pressure to ensure that the pre-pressure is moderate, avoid the pre-pressure being too small and unable to meet the pre-pressure efficiency, or avoid the pre-pressure being too large and the battery assembly 2 being damaged.

[0121] In this embodiment, if Figure 3-Figure 8As shown, the pressure detection unit 12132 includes a pressure detection element 121321 , a first mounting plate 121322 and a second mounting plate 121323 .

[0122] The driving end of the pre-stressing driving part 1212 can movably pass through the first side plate 121312 of the first pre-stressing bracket 12131 and be connected to the first mounting plate 121322, so as to apply driving force to the first mounting plate 121322. The first mounting plate 121322 is connected to the second mounting plate 121323. For example, the first mounting plate 121322 and the second mounting plate 121323 can be connected by a plurality of linear bearings 121324 to ensure good guiding and linear motion. The friction resistance of the linear bearings 121324 is extremely small, and smooth motion can be achieved.

[0123] The pressure detection element 121321 is sandwiched between the first mounting plate 121322 and the second mounting plate 121323 to monitor the pre-pressure of the pre-pressure driving unit 1212 during pre-pressure to avoid excessive or insufficient pre-pressure. The pressure detection element 121321 is, for example, a pressure sensor, which can accurately measure and thus control the pre-pressure of the pre-pressure driving unit 1212 to ensure that the pre-pressure is moderate, thereby improving production efficiency and ensuring product quality and safety performance.

[0124] The first pre-pressing plate 12133 can be mounted on the second mounting plate 121323 to facilitate the adsorption of the module end plate 23. The first pre-pressing plate 12133 can be fixed to the second mounting plate 121323 by welding, bonding or screwing to improve the reliability of the connection between the two.

[0125] It should be noted that the pressure detection unit 12132 may also include a pressure display unit, such as a display screen, which is connected to the pressure detection element 121321 for real-time display of the pre-pressure collected by the pressure detection element 121321, and more intuitively, accurately and quickly determine the current pre-pressure, and timely adjust the value of the pre-pressure, thereby effectively improving the pre-pressure efficiency. Of course, it is understandable that the pre-pressure may also be directly displayed on the total display screen of the pre-pressure device 1 or the production line, which is subject to the actual situation.

[0126] In this embodiment, if Figure 3-Figure 8As shown, the pressure detection unit 12132 includes a second sliding portion 12135, and the first mounting plate 121322 is slidably connected to the second pre-compression support plate 12112 via the second sliding portion 12135. The second sliding portion 12135, for example, includes a first slider 121351 and a first slide rail 121352, the first slide rail 121352 is fixedly connected to the second pre-compression support plate 12112, the first slider 121351 is fixedly connected to the first mounting plate 121322, and the first slider 121351 is slidably disposed on the first slide rail 121352.

[0127] Among them, the second sliding part 12135 can be multiple, such as two, three, etc., and the multiple second sliding parts 12135 are arranged in sequence and spaced apart along the second direction to provide stable support for the first mounting plate 121322 and improve the balance of the pressure detection unit 12132.

[0128] In this embodiment, if Figure 3-Figure 8 As shown, the first pre-compression plate 12133 includes a first pre-compression plate 121331 and a plurality of second suction cups 121332. The first pre-compression plate 121331 is connected to the second mounting plate 121323 of the pressure detection unit 12132, such as by welding, bonding or screwing, to improve the reliability of the first pre-compression plate 121331 during installation.

[0129] The first pre-pressing plate 121331 is provided with a plurality of first mounting through holes 1213311, and the plurality of first mounting through holes 1213311 are arranged along the vertical direction (refer to Figure 1 The plurality of second suction cups 121332 are correspondingly disposed in the first mounting through hole 1213311 of the first pre-pressing plate 121331, and the plurality of second suction cups 121332 are used to absorb the module end plate 23 to fix the module end plate 23.

[0130] The second suction cup 121332 can be connected to the first vacuum generator 121333, for example. When the first vacuum generator 121333 is started, the second suction cup 121332 is in a negative pressure state, so as to firmly suck the module end plate 23 onto the first pre-pressing plate 121331. The first vacuum generator 121333 can be fixed on the second mounting plate 121323 so as to move synchronously with the second suction cup 121332. The first pre-pressing plate 12133 can also include a first negative pressure gauge 121335, which can display the negative pressure situation, so that the operator can control the first vacuum generator 121333 at any time according to the actual situation and adjust the negative pressure value.

[0131] In this embodiment, if Figure 3-Figure 8As shown, the first pre-pressing plate 12133 includes two first clamping bodies 121334, which are arranged on both sides of the first pre-pressing plate 121331 along the first direction and protrude from the first pre-pressing plate 121331, so that the two first clamping bodies 121334 can clamp the module end plate 23 to improve the stability of the module end plate 23. The first clamping bodies 121334 can also block the module end plate 23, realize the positioning installation or limited installation of the module end plate 23, avoid its deviation, and ensure that the module end plate 23 can form a counter-position connection with the battery module 22.

[0132] The distance between the two first clamping bodies 121334 can be fixed to be suitable for a module end plate 23 of a specific size. Alternatively, the distance between the two first clamping bodies 121334 can be adjustable to be suitable for module end plates 23 of different sizes, such as the first clamping bodies 121334 can be adjusted by using a driving cylinder or an adjusting screw.

[0133] In this embodiment, if Figure 3-Figure 8 As shown, the first pre-pressing portion 1213 includes a second sensing element 12134, and the second sensing element 12134 is arranged on the first pre-pressing plate 121331. Exemplarily, the first pre-pressing plate 121331 is provided with a first avoidance groove 1213312, and the second sensing element 12134 is arranged in the first avoidance groove 1213312 to ensure that the second sensing element 12134 can correspond to the upper module end plate 23 and detect it.

[0134] The second sensing element 12134 is, for example, a sensor, and is used to detect whether the module end plate 23 is installed in place to avoid deviation.

[0135] Among them, for example, two second sensing elements 12134 are provided, which are arranged on both sides along the second direction, so as to detect both sides of the module end plate 23 to ensure that the module end plate 23 is installed in place and avoid affecting the alignment connection between the module end plate 23 and the battery module 22.

[0136] The pre-pressing device 1 in this embodiment, the first pre-pressing part 1213 realizes the pre-pressing of the battery module 22 and the stable fixation of the module end plate 23 through the coordinated work of its various components. The pressure detection unit 12132 can accurately monitor the pre-pressure, ensure that the pre-pressure is moderate, and avoid damage to the battery assembly 2. At the same time, the design of the first pre-pressing plate 12133 enables the module end plate 23 to be firmly adsorbed and stably clamped, ensuring its normal connection with the battery module 22.

[0137] In some exemplary embodiments, Figure 3-Figure 8As shown, the second pre-pressing portion 1214 includes a second pre-pressing bracket 12141 and a second pre-pressing plate 12142 , which work together to achieve pre-pressing of the battery cell module 22 and fixation of another module end plate 23 .

[0138] The second pre-stressing bracket 12141 is connected to the second pre-stressing support plate 12112. The second pre-stressing bracket 12141 can be fixedly connected to the second pre-stressing support plate 12112 by welding, bonding or screwing, so as to improve the stability of the connection between the second pre-stressing bracket 12141 and the second pre-stressing support plate 12112.

[0139] Exemplarily, the second pre-stressing bracket 12141 includes, for example, a second transverse plate 121411, a third side plate 121412 and two fourth side plates 121413. The second transverse plate 121411 is fixedly connected to the second pre-stressing support plate 12112, the lower end of the third side plate 121412 is fixedly connected to the second transverse plate 121411, the two fourth side plates 121413 are arranged on both sides along the second direction, the fourth side plate 121413 is respectively fixedly connected to the second transverse plate 121411 and the third side plate 121412, and the fourth side plate 121413 is, for example, triangular in shape, so that the second pre-stressing bracket 12141 achieves non-deformability, balance and high support, and can remain stable when the second pre-stressing bracket 12141 is subjected to external forces.

[0140] The reinforcing boss 121414 and the first limiting hole 121415 are, for example, arranged on the third side plate 121412 to support the abutment with the second driving part 1215 .

[0141] The second pre-compression plate 12142 is fixedly connected to the third side plate 121412 of the second pre-compression bracket 12141 . The second pre-compression plate 12142 is used to absorb another module end plate 23 to fix and limit it, thereby ensuring that the module end plate 23 can be connected to the battery cell module 22 in an aligned manner.

[0142] In this embodiment, if Figure 3-Figure 8 As shown, the second pre-stressing disc 12142 includes a second pre-stressing plate 121421 and a plurality of third suction cups 121422. The second pre-stressing plate 121421 is connected to the third side plate 121412 of the second pre-stressing bracket 12141. The second pre-stressing plate 121421 can be fixedly connected to the third side plate 121412 by welding, bonding or screwing to improve the reliability of the second pre-stressing plate 121421 during installation.

[0143] A plurality of second mounting through holes 1214211 are provided on the second pre-compression plate 121421, and the plurality of second mounting through holes 1214211 are sequentially arranged along the vertical direction and the second direction. A plurality of third suction cups 121422 are provided in the second mounting through holes 1214211 corresponding to the second pre-compression plate 121421, and the plurality of third suction cups 121422 are used for adsorbing the corresponding module end plates 23, so as to fix and limit the module end plates 23.

[0144] Among them, the third suction cup 121422 can be connected through the second vacuum generator 121423, for example. When the second vacuum generator 121423 is started, the multiple third suction cups 121422 are in a negative pressure state, so as to firmly suck the corresponding module end plate 23 onto the second pre-pressing plate 121421. The second vacuum generator 121423 can be fixed on the fourth side plate 121413 to provide negative pressure to the third suction cup 121422 in time. And the third suction cup 121422 can also include a second negative pressure gauge 121424, which can display the negative pressure situation, so that the operator can control the second vacuum generator 121423 at any time according to the actual situation and adjust the negative pressure value.

[0145] In this embodiment, if Figure 3-Figure 8 As shown, the second pre-pressing plate 12142 includes two second clamping bodies 121425, which are arranged on both sides of the second pre-pressing plate 121421 along the second direction and protrude from the second pre-pressing plate 121421, so that the two second clamping bodies 121425 can clamp the corresponding module end plate 23 to improve the stability of the module end plate 23. The second clamping bodies 121425 can also block the corresponding module end plate 23 to achieve the positioning installation or limited installation of the module end plate 23, avoid its deviation, and ensure that the module end plate 23 can form a counter-position connection with the battery module 22.

[0146] The distance between the two second clamping bodies 121425 can be fixed to be suitable for a module end plate 23 of a specific size. Alternatively, the distance between the two second clamping bodies 121425 can be adjustable to be suitable for module end plates 23 of different sizes, such as the second clamping bodies 121425 can be adjusted by using a driving cylinder or an adjusting screw.

[0147] In this embodiment, if Figure 3-Figure 8As shown, the second pre-pressing portion 1214 includes a third sensing element 12143, and the third sensing element 12143 is arranged on the second pre-pressing plate 121421. Exemplarily, the second pre-pressing plate 121421 is provided with a second avoidance groove 1214212, and the third sensing element 12143 is arranged in the second avoidance groove 1214212 to ensure that the third sensing element 12143 can correspond to the upper module end plate 23 and detect it.

[0148] The third sensing element 12143 is also a sensor, and is used to detect whether the module end plate 23 is installed in place to avoid deviation.

[0149] Among them, for example, two third sensing elements 12143 are provided, which are arranged on both sides along the second direction, so as to detect both sides of the module end plate 23 to ensure that the module end plate 23 is installed in place and avoid affecting the alignment connection between the module end plate 23 and the battery module 22.

[0150] In this embodiment, if Figure 3-Figure 8 As shown, the second pre-pressing part 1214 includes a shape-changing member 12144, and the second pre-pressing plate 121421 of the second pre-pressing plate 12142 is connected to the third side plate 121412 of the second pre-pressing bracket 12141 through the shape-changing member 12144. The shape-changing member 12144 is used to extend the length of the second pre-pressing part 1214 along the first direction, so that the second pre-pressing part 1214 can be connected to the battery module 22. When the length of the battery module 22 cannot match the distance between the first pre-pressing part 1213 and the second pre-pressing part 1214, the shape-changing member 12144 can be used to make up for the length difference.

[0151] The shape-changing member 12144, for example, includes a first shape-changing plate 121441, a second shape-changing plate 121442, and a shape-changing support plate 121443, and the first shape-changing plate 121441 is connected to the second shape-changing plate 121442 through the shape-changing support plate 121443. The first shape-changing plate 121441 can be detachably connected to the third side plate 121412 of the second pre-pressing bracket 12141, so as to facilitate the installation and removal of the shape-changing member 12144 at any time, or to replace the shape-changing member 12144 of different sizes to meet the needs of battery assemblies 2 of different lengths, and ensure that the second pre-pressing part 1214 can work stably and effectively. It can be understood that the shape-changing support plate 121443 can be one or more, and multiple shape-changing support plates 121443 can improve the overall stability.

[0152] Among them, the detachable connection method is, for example, an adsorption method or a screw connection method. When the adsorption method is adopted, the first shape-changing plate 121441 can be directly adsorbed on the third suction cup 121422, and a third suction cup 121422 is added to the second shape-changing plate 121442 to facilitate the adsorption of the module end plate 23. When the screw connection method is adopted, the first shape-changing plate 121441 can be fixed to the third side plate 121412 of the second pre-compression bracket 12141 by fasteners such as screws or bolts, and the second pre-compression plate 12142 is set on the second shape-changing plate 121442 to facilitate the adsorption of the module end plate 23.

[0153] The pre-pressing device 1 in this embodiment, the second pre-pressing part 1214 realizes the pre-pressing of the battery cell module 22 and the stable fixation of the module end plate 23 through the coordinated work of its various components. At the same time, through the design and application of the shape-changing member 12144, the pre-pressing device 1 can adapt to the requirements of battery assemblies 2 of different lengths, thereby improving its flexibility and practicality.

[0154] In some exemplary embodiments, Figure 3-Figure 8 As shown, the pre-pressing unit 121 includes a pre-pressing positioning portion 1216, and the second pre-pressing support plate 12112 is positioned and connected with the support mechanism 11 through the pre-pressing positioning portion 1216, and the second pre-pressing support plate 12112 is fixed at the target position to facilitate the accurate execution of the pre-pressing process. Among them, the pre-pressing positioning portion 1216 can be one or more. When there are multiple pre-pressing positioning portions 1216, they can be arranged on both sides along the first direction, and are arranged close to the first pre-pressing portion 1213 and the second pre-pressing portion 1214 respectively.

[0155] First example

[0156] The pre-compression positioning portion 1216 includes, for example, a positioning cylinder 12161 . The positioning cylinder 12161 has a cylinder body and a positioning rod 12162 . The positioning rod 12162 is telescopically disposed in the cylinder body. The positioning rod 12162 can move in a vertical direction.

[0157] When the pre-pressing mechanism 12 moves to the target position, the pre-pressing positioning portion 1216 is activated, so that the positioning rod 12162 of the pre-pressing positioning portion 1216 moves downward until it abuts against the supporting mechanism 11 to limit the movement of the pre-pressing mechanism 12 .

[0158] Second example

[0159] The pre-stressed positioning portion 1216, for example, includes a positioning cylinder 12161 and a positioning base column 12163. The structure of the positioning cylinder 12161 is the same as the structure of the positioning cylinder 12161 in the first example, and will not be repeated here. The positioning base column 12163 is fixedly connected to the support mechanism 11. There can be multiple positioning base columns 12163, which are arranged along the first direction to achieve positioning at different positions. The positioning base column 12163 is formed with a positioning hole 12164, and the positioning rod 12162 of the positioning cylinder 12161 can be inserted into the positioning hole 12164 of the positioning base column 12163 to achieve a positioning connection, thereby effectively improving the accuracy of positioning.

[0160] The battery module 22 is placed on the module support plate 1231 of the pre-pressing support part 123 and is firmly fixed by the third suction cup 1232. At the same time, the module sensor 12313 is used to detect whether the battery module 22 is installed in place.

[0161] The pre-pressing mechanism 12 is moved to the target position to prepare for the pre-pressing process. The pre-pressing positioning part 1216 is activated to make the positioning rod 12162 abut against the supporting mechanism 11 or extend into the positioning hole 12164 to fix the pre-pressing unit 121 at the target position.

[0162] The first driving part 122 is started, and the module support plate 1231 of one pre-pressing support part 123 is driven to move relative to the module support plate 1231 of the other pre-pressing support part 123 through the first driving element 1221, so as to realize the merging and pre-pressing of the battery cell module 22 in the first direction.

[0163] The pre-pressing device 1 provided in this embodiment has the advantages of simple structure, easy operation, accurate detection and strong adaptability, and is suitable for the pre-pressing process of the battery cell module 22 in the manufacturing process of the battery assembly 2.

[0164] In some exemplary embodiments, Figure 3-Figure 11 As shown, the preloading device 1 includes a transmission mechanism 13, which is disposed on the support mechanism 11, and the second preloading support plate 12112 is slidably connected to the support mechanism 11 through the transmission mechanism 13, so as to move the second preloading support plate 12112 to a target position.

[0165] In this embodiment, if Figure 3-Figure 11 As shown, the transmission mechanism 13 includes a third sliding portion 131, and the second pre-stressing support plate 12112 is slidably connected to the support mechanism 11 via the third sliding portion 131. The third sliding portion 131 can not only provide stable support for the second pre-stressing support plate 12112, but also facilitate the second pre-stressing support plate 12112 to move to the target position.

[0166] Exemplarily, the third sliding part 131 includes, for example, a third slider 1311 and a third slide rail 1312, the third slide rail 1312 is fixedly connected to the support mechanism 11, the third slider 1311 is fixedly connected to the second pre-compression support plate 12112, and the third slider 1311 is slidably disposed on the third slide rail 1312. The third sliding part 131 may be one or more, and when there are more than one third sliding part 131, they may be sequentially spaced along the second direction, providing stable support for the second pre-compression support plate 12112 and ensuring the stability and accuracy of its movement.

[0167] In this embodiment, if Figure 3-Figure 11 As shown, the transmission mechanism 13 includes a driving unit 132, and the driving unit 132 drives the second pre-compression support plate 12112 to slide on the third sliding portion 131. The driving unit 132 can provide a driving force to drive the second pre-compression support plate 12112 to move to a target position.

[0168] First example

[0169] The driving unit 132 includes, for example, a third driving part (not shown in the figure), which drives the second pre-stressing support plate 12112 to move. The third driving part is, for example, a motor, and a driving rod of the third driving part is screwed to the second pre-stressing support plate 12112, so that the third driving part can drive the second pre-stressing support plate 12112 to perform linear motion along the first direction. The driving method is simple and convenient, and can achieve accurate and stable power transmission.

[0170] Second example

[0171] The driving unit 132, for example, includes a third driving part 1321, a transmission rack 1322 and a transmission gear 1323. The driving end of the third driving part 1321 passes through the second pre-stressing support plate 12112 and is connected to the transmission gear 1323. The transmission gear 1323 is meshedly connected with the transmission rack 1322. The transmission rack 1322 can be fixed on the supporting mechanism 11 or on the third slide rail 1312 of the third sliding part 131, thereby realizing installation flexibility, facilitating adjustment and optimization according to different application scenarios and requirements, and enhancing the adaptability and versatility of the entire driving unit 132.

[0172] The third driving unit 1321 is arranged above the second pre-stressing support plate 12112, and the driving end of the third driving unit 1321 can be rotatably passed through the second pre-stressing support plate 12112 and fixedly connected with the transmission gear 1323, thereby realizing a compact layout and effectively saving space, making the entire driving unit 132 more integrated, reducing the floor space, and improving the compactness and aesthetics of the overall structure. The transmission gear 1323 is meshedly connected with the transmission rack 1322 to realize accurate and stable power transmission. When the third driving unit 1321 drives the transmission gear 1323 to rotate, the transmission gear 1323 moves on the transmission rack 1322, thereby driving the second pre-stressing support plate 12112 to move, ensuring that the second pre-stressing support plate 12112 can move smoothly along a predetermined trajectory.

[0173] The third driving unit 1321 includes, for example, a mobile motor 13211, a mobile reducer 13212, a reducer mounting block 13213, and a motor shield 13214. The mobile motor 13211 is connected to the mobile reducer 13212, and the mobile reducer 13212 is connected to the second pre-stressing support plate 12112 through the reducer mounting block 13213. The driving end of the mobile reducer 13212 can rotatably pass through the second pre-stressing support plate 12112 and connect to the transmission gear 1323. The motor shield 13214 is provided on the mobile reducer 13212 to protect it from interference from the external environment. The mobile motor 13211 can be installed to the motor shield 13214 to improve the stability of the mobile motor 13211, extend the service life of the mobile motor 13211, and reduce the maintenance cost.

[0174] The modular design of the components of the drive unit 132 allows easy upgrading or replacement when necessary, thereby improving the maintainability and scalability of the drive unit 132. The design of the drive unit 132 not only improves the transmission efficiency and accuracy of the system, but also enhances the stability and flexibility of the structure, thus providing a strong guarantee for the long-term stable operation of the preloading device 1.

[0175] In this embodiment, if Figure 3-Figure 11 As shown, the transmission mechanism 13 includes a traction assembly 133 and a first support frame 134 . The first support frame 134 is disposed on the second pre-compression support plate 12112 . The first support frame 134 is connected to the support mechanism 11 through the traction assembly 133 .

[0176] The traction assembly 133, for example, includes a plurality of chains 1331 and a plurality of chain boxes 1332, and the chain boxes 1332 are disposed on the support mechanism 11. One end of the chain 1331 is connected to the first support frame 134, the first support frame 134 is connected to the second pre-compression support plate 12112, and the other end of the chain 1331 is disposed in the corresponding chain box 1332. When the second pre-compression support plate 12112 moves, the traction assembly 133 can guide the second pre-compression support plate 12112 to move along the first direction to prevent it from deviating from the path.

[0177] The first support frame 134, for example, includes a first plate 1341, a vertical plate 1342, and a second plate 1343 connected in sequence. The other end of the chain 1331 is overlapped on the first plate 1341. The vertical plate 1342 increases the vertical height of the first support frame 134 and provides space for the movement of the chain 1331. The second plate 1343 is fixedly connected to the second pre-compression support plate 12112, thereby realizing an effective connection between the second pre-compression support plate 12112, the first support frame 134, and the traction assembly 133. Among them, the second pre-compression support plate 12112 may be provided with a recessed groove 121121, and the second plate 1343 is embedded in the recessed groove 121121 to realize positioning installation.

[0178] The preloading device 1 in this embodiment not only improves the transmission efficiency and precision of the system, but also enhances the stability and flexibility of the structure, providing a strong guarantee for the long-term stable operation of the equipment. At the same time, it has the beneficial effects of flexible sliding connection design, compact layout, enhanced stability and safety, modular design and easy maintenance, as well as installation flexibility and versatility.

[0179] In some exemplary embodiments, Figure 3-Figure 13 As shown, the preloading device 1 includes a positioning mechanism 14, and the positioning mechanism 14 is mounted to the supporting mechanism 11. Fig.13 As shown, for example, two groups of pre-pressing mechanisms 12 are provided in the pre-pressing production line, and a positioning mechanism 14 is provided on both sides of each group of pre-pressing mechanisms 12 along the second direction, and each positioning mechanism 14 is positioned and fitted with the corresponding battery module 22 to ensure the precise position and stability of the battery module 22 during installation. The positioning mechanisms 14 between two adjacent pre-pressing mechanisms 12 can be arranged together to save space and reduce the occupied area.

[0180] The positioning mechanism 14 not only plays a positioning role, but also effectively prevents the displacement or misalignment of the battery module 22 during the installation process through the limiting function, thereby ensuring the accurate alignment and connection between the battery module 22 and the module end plate 23, and improving the accuracy and efficiency of the overall assembly. The positioning mechanism 14 can abut against the corresponding battery module 22 to limit and position the battery module 22. Alternatively, in some application scenarios, the battery module 22 can be pushed to the target position to achieve the positioning of the battery module 22.

[0181] It can be understood that the above two groups of pre-stressing mechanisms 12 are only for illustrative purposes and do not constitute a limitation to the present application. The pre-stressing mechanisms 12 may be three, four or more, and each pre-stressing mechanism 12 is provided with a positioning mechanism 14 on both sides along the second direction, and the two positioning mechanisms 14 between two adjacent pre-stressing mechanisms 12 can be used in combination, and some structures are staggered to form avoidance and reduce the occupied area of ​​the two positioning mechanisms 14.

[0182] In this embodiment, if Figure 3-Figure 13 As shown, the positioning mechanism 14 includes a second support frame 141, a fourth driving part 142 and a positioning plate 143. The fourth driving part 142 is arranged on the second support frame 141. The fourth driving part 142 is used to drive the positioning plate 143 to move along the second direction, so that the positioning plate 143 fits the battery module 22, thereby realizing the automation and flexibility of positioning the battery module 22. Driving the positioning plate 143 to move along the second direction not only simplifies the operation process, but also improves production efficiency, while reducing the error of manual operation, and ensuring the stability and reliability of the positioning process.

[0183] The second support frame 141 includes, for example, a plurality of support columns 1411 and a positioning support plate 1412. The lower ends of the plurality of support columns 1411 are respectively fixedly connected to the support mechanism 11, and the upper ends of the plurality of support columns 1411 are respectively fixedly connected to the positioning support plate 1412. The fourth driving unit 142 is, for example, a driving cylinder, which is disposed on the positioning support plate 1412. The driving end of the fourth driving unit 142 is connected to the positioning plate 143, thereby driving the positioning plate 143 to move.

[0184] In this embodiment, if Figure 3-Figure 13 As shown, the positioning mechanism 14 includes a guide portion 144 , which is disposed on the second support frame 141 , and is used to limit the movement direction of the positioning plate 143 , so that the positioning plate 143 can move along the second direction.

[0185] Exemplarily, the guide portion 144 includes a guide column 1441 and a guide rail 1442. One end of the guide column 1441 is fixedly connected to the positioning plate 143, and the other end of the guide column 1441 passes through the guide rail 1442. The guide column 1441 and the guide rail 1442 cooperate with each other, which not only limits the movement direction of the positioning plate 143, but also ensures its stability and accuracy during movement.

[0186] In order to limit the movement distance of the positioning plate 143 and prevent the guide column 1441 from being separated from the guide track 1442, the guide portion 144 further includes a baffle 1443, and the other end of the guide column 1441 is fixedly connected to the baffle 1443. The inner diameter of the guide track 1442 is smaller than the cross-sectional size of the baffle 1443 to ensure that the baffle 1443 can be clamped on the outside of the guide track 1442. The length of the guide column 1441 is greater than the length of the guide track 1442 to ensure that the guide column 1441 can move.

[0187] The design of the positioning mechanism 14 fully considers the diversity and flexibility in practical applications. For example, the guide part 144 can be one or more and configured according to actual needs to meet the positioning requirements of different battery cell modules 22 sizes and shapes, thereby improving the applicability of the positioning mechanism 14.

[0188] The pre-stressing device 1 in this embodiment achieves many beneficial effects such as precise positioning and limiting, flexible driving and automation, stable guidance and protection, structural optimization and adaptability of the battery cell module 22 through the positioning mechanism 14 and its related components, providing strong support for the installation, overall assembly and pre-stressing process of the battery cell module 22.

[0189] In some exemplary embodiments, Figure 3-Figure 14 As shown, the pre-pressing device 1 includes a scanning mechanism 15, which improves the automation and intelligence level of the processing flow of the battery assembly 2. The scanning mechanism 15 is arranged on the supporting mechanism 11, and the scanning mechanism 15 is arranged to scan the battery assembly 2 to determine and record the position information, image information, specification information, etc. of the battery assembly 2.

[0190] In this embodiment, if Figure 3-Figure 14 As shown, the scanning mechanism 15 includes a collection unit 151, a third support frame 152 and a first protective cover 153, which realizes comprehensive and efficient code scanning and information collection of the battery assembly 2. This function not only ensures the accurate recording of key data such as the position information, image information, and specification information of the battery assembly 2, but also greatly shortens the time for information collection and improves production efficiency.

[0191] The third support frame 152 is arranged on the support mechanism 11, and the third support frame 152 is fixed to the support mechanism 11 by welding, bonding or screwing to improve the reliability of the connection. The acquisition unit 151 is, for example, a barcode scanning camera, which can record the information of the battery module 22 to make the production information electronic. The acquisition unit 151 is arranged on the third support frame 152, and the acquisition unit 151 can be slidably or fixedly arranged on the third support frame 152, so that the scanning process is more flexible and changeable, and can adapt to battery components 2 of different specifications and positions, further enhancing the versatility and adaptability of the device.

[0192] The first protective cover 153 covers the collection unit 151, effectively protecting the collection unit 151 from interference and damage from the external environment, extending its service life and reducing maintenance costs. The first protective cover 153 is connected to the third support frame 152, and the first protective cover 153 can also be slidably connected or fixedly connected to the third support frame 152, depending on the connection method of the collection unit 151.

[0193] In this embodiment, if Figure 3-Figure 13 As shown, the preloading device 1 includes a display unit 16, which is arranged on the third support frame 152. The display unit 16 is, for example, a display screen, which can display key data such as acquisition information, code scanning information, and preloading information in real time, providing intuitive and clear visual feedback for operators. This not only improves the transparency of the operation process, but also helps to discover and correct potential problems in a timely manner, thereby ensuring the smooth progress of the entire production process.

[0194] The pre-pressing device 1 in this embodiment, through the design of its scanning mechanism 15 and display unit 16, significantly improves the efficiency and accuracy of battery assembly 2 processing, reduces production costs, and brings significant economic and social benefits to the battery manufacturing industry.

[0195] In some exemplary embodiments, Figure 2-Figure 14 As shown, the support mechanism 11 includes a fourth support frame 111, a stepping platform 112, a safety grating 113 and a second protective cover 114. The above structures work together to provide all-round isolation and protection for the entire pre-pressing device 1, which not only effectively prevents operators from mistakenly entering dangerous areas, but also ensures the safety of the battery assembly 2 during the pre-pressing process and reduces the occurrence of accidents.

[0196] The stepping platform 112 is arranged on the side of the fourth support frame 111, providing a comfortable standing position for the operator, which is convenient for the user to observe and operate. The height of the stepping platform 112 is less than the height of the fourth support frame 111, and its height is subject to the actual situation, as long as the operator is in a favorable viewing angle. The height of the stepping platform 112 can be fixed or adjustable to meet the height of different operators, thereby improving the convenience and efficiency of operation.

[0197] The second protective cover 114 is arranged on the fourth support frame 111. The second protective cover 114 includes a top cover 1141, a pillar 1142, an isolation plate and a side plate 1143. The top cover 1141 is connected to the upper end of the pillar 1142, the lower end of the pillar 1142 is connected to the fourth support frame 111, and the side plate 1143 is connected to the pillar 1142. The isolation plate is arranged between two adjacent pre-stressing mechanisms 12 to separate the pre-stressing mechanisms 12 from interfering with each other. Among them, the cross-sectional area of ​​the top cover 1141 is smaller than the cross-sectional area of ​​the fourth support frame 111, so that part of the area of ​​the fourth support frame 111 is exposed. When the pre-stressing device 1 is in the initial state, the pre-stressing mechanism 12 can be located in the exposed area to facilitate the placement of the battery assembly 2. When it needs to be pre-stressed, the pre-stressing mechanism 12 is driven to move to the shielding area to improve safety.

[0198] A safety grating 113 is arranged along the circumference of the fourth support frame 111, and the safety grating 113 is connected to the second protective cover 114, so as to improve the stability of the safety grating 113. Moreover, the safety grating 113 not only further separates the preloading area, but also realizes effective separation and protection of the inside and outside. The gap design of the safety grating is reasonable, which does not affect the operator's viewing of the operation of the preloading device, thereby improving the transparency of the operation while ensuring safety.

[0199] The fourth support frame 111 serves as the supporting base of the entire preloading device, and its design includes related components such as a supporting frame, a cabinet, a limiting column, and rollers, which ensures the stability and reliability of the preloading device 1. This design not only improves the overall stability of the preloading device 1, but also facilitates the movement and positioning of the preloading device 1.

[0200] The design of the supporting mechanism 11 of the pre-pressing device 1 in this embodiment plays an important role in improving the functionality, safety and operability of the pre-pressing device 1 , and provides a safer, more convenient and more efficient solution for the pre-pressing operation of the battery assembly 2 .

[0201] The pre-pressing device provided in the present application has a transmission mechanism that can transmit the pre-pressing mechanism to the target position for the pre-pressing process, and the positioning mechanism can be used to adjust the position of the pre-pressing direction of the battery assembly, so that when the battery cell module is pre-pressed, the module end plate can be in the correct corresponding position with the battery cell module. The pre-pressing mechanism is used to pre-press the battery cell module. After the battery assembly is squeezed to a certain size, the steel belt is manually put on to complete the assembly. At the same time, during the pre-pressing process, the pressure detection unit on the pre-pressing mechanism can adjust the pre-pressure to prevent the pre-pressure from being too large to damage the battery cell module, or the pre-pressure from being too small to achieve the purpose of pre-pressing. And the first drive unit can realize the pre-pressing and production of double-row battery cell modules, and multiple pre-pressing mechanisms can realize dual-channel production in a limited space, greatly improving production efficiency. And the structure has high compatibility, and double-row battery cell modules with different numbers of batteries can be produced through shape-changing parts.

[0202] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0203] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0204] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pre-pressing device for pre-pressing a battery assembly, wherein the battery assembly comprises a steel strip, a battery cell module and a module end plate, characterized in that: The pre-pressing device comprises a supporting mechanism and a plurality of pre-pressing mechanisms, wherein the pre-pressing mechanisms are arranged on the supporting mechanism; The pre-pressing mechanism comprises a pre-pressing unit, a first driving part and two pre-pressing supporting parts, each of the pre-pressing supporting parts is provided with a battery cell module, and the pre-pressing unit is configured to pre-press the battery cell module along a first direction; The first driving part is connected to one of the pre-compression support parts to drive it to move toward the other pre-compression support part along the second direction so that the two battery cell modules are fitted; wherein the first direction and the second direction are perpendicular to each other.

2. The preloading device according to claim 1, characterized in that: The pre-pressing support part includes a module support plate and a plurality of first suction cups. The module support plate is movably disposed on the pre-pressing unit. The plurality of first suction cups are disposed on the module support plate. The plurality of first suction cups adsorb the battery cell module.

3. The preloading device according to claim 2, characterized in that: The pre-pressing support portion includes a first sensing element, which is disposed on the module support plate. The first sensing element is configured to detect the steel belt, which is disposed on the outer sides of the two pre-pressing support portions.

4. The preloading device according to claim 2, characterized in that: The first driving portion includes a first driving element and at least one first sliding portion; The first driving element is configured to drive the module support plate of one of the pre-stressing support parts to move toward the module support plate of the other pre-stressing support part; wherein the module support plate of one of the pre-stressing support parts is slidably connected to the pre-stressing unit via the first sliding part.

5. The preloading device according to claim 1, characterized in that: The pre-pressing unit comprises a pre-pressing platform, a pre-pressing driving part, a first pre-pressing part and a second pre-pressing part, wherein the first pre-pressing part and the second pre-pressing part are arranged on both sides of the pre-pressing supporting part along the first direction, so that the battery cell module is sandwiched between the first pre-pressing part and the second pre-pressing part; The pre-stressing support part and the first driving part are respectively arranged on the pre-stressing platform, the pre-stressing platform is movably arranged on the supporting mechanism, at least one of the second pre-stressing part and the first pre-stressing part is movably arranged on the pre-stressing platform, the pre-stressing driving part is arranged on the supporting mechanism, and the pre-stressing driving part can drive the first pre-stressing part to move along the first direction to pre-stress the battery cell module.

6. The preloading device according to claim 5, characterized in that: The pre-pressing platform comprises a first pre-pressing support plate and a second pre-pressing support plate; The pre-compression support part and the first driving part are respectively arranged on the first pre-compression support plate, the second pre-compression support plate is arranged on a side of the first pre-compression support plate away from the first driving part, and the first pre-compression support plate is movably arranged on the second pre-compression support plate.

7. The preloading device according to claim 6, characterized in that: The pre-pressing unit includes a second driving part, which is arranged on the first pre-pressing support plate. The second driving part and the second pre-pressing part are arranged opposite to each other along the first direction, so that the driving end of the second driving part can abut against the second pre-pressing part to push the first pre-pressing support plate.

8. The preloading device according to claim 6, characterized in that: The first pre-pressing part includes a first pre-pressing bracket, a pressure detection unit and a first pre-pressing plate; The first pre-compression bracket is connected to the second pre-compression support plate, the driving end of the pre-compression driving unit can pass through the first pre-compression bracket to be connected to the pressure detection unit, the pressure detection unit is connected to the first pre-compression plate, and the first pre-compression plate is configured to absorb the module end plate; The pre-pressing driving unit can drive the pressure detection unit to move, and the pressure detection unit drives the first pre-pressing plate to move, so that the first pre-pressing plate pre-presses the battery cell module, and the pressure detection unit is configured to monitor the pre-pressing force.

9. The preloading device according to claim 8, characterized in that: The pressure detection unit includes a pressure detection element, a first mounting plate and a second mounting plate; The driving end of the pre-stressing driving part passes through the first pre-stressing bracket and is connected to the first mounting plate, the first mounting plate and the second mounting plate are connected, and the pressure detecting element is clamped between the first mounting plate and the second mounting plate; wherein the first pre-stressing plate is mounted on the second mounting plate.

10. The preloading device according to claim 9, characterized in that: The pressure detection unit includes a second sliding portion, and the first mounting plate is slidably connected to the second pre-pressure support plate via the second sliding portion.

11. The preloading device according to claim 8, characterized in that: The first pre-compression plate includes a first pre-compression plate and a plurality of second suction cups, the first pre-compression plate is connected to the pressure detection unit, the plurality of second suction cups are arranged at intervals on the first pre-compression plate, and the plurality of second suction cups are arranged to adsorb the module end plate.

12. The preloading device according to claim 11, characterized in that: The first pre-pressing plate further includes two first clamping bodies, which are arranged on both sides of the first pre-pressing plate along the second direction, and the two first clamping bodies are configured to clamp the module end plate.

13. The preloading device according to claim 11, characterized in that: The first pre-pressing portion further includes a second sensing element, which is disposed on the first pre-pressing plate and is configured to detect the module end plate.

14. The preloading device according to claim 6, characterized in that: The second pre-pressing portion includes a second pre-pressing bracket and a second pre-pressing plate; The second pre-compression bracket is connected to the second pre-compression support plate, the second pre-compression plate is connected to the second pre-compression bracket, and the second pre-compression plate is configured to absorb another module end plate.

15. The preloading device according to claim 14, characterized in that: The second pre-compression plate includes a second pre-compression plate and a plurality of third suction cups, the second pre-compression plate is connected to the second pre-compression bracket, the plurality of third suction cups are arranged on the second pre-compression plate, and the plurality of third suction cups are arranged to adsorb another module end plate.

16. The preloading device according to claim 15, characterized in that: The second pre-pressing plate further includes two second clamping bodies, which are arranged on both sides of the second pre-pressing plate along the second direction, and the two second clamping bodies are configured to clamp the module end plate.

17. The preloading device according to claim 15, characterized in that: The second pre-pressing portion includes a third sensing element, the third sensing element is disposed on the second pre-pressing plate, and the third sensing element is configured to detect another module end plate.

18. The preloading device according to claim 14, characterized in that: The second pre-stressing part includes a shape-changing part, and the second pre-stressing plate is connected to the second pre-stressing bracket through the shape-changing part; wherein the shape-changing part is used to extend the length of the second pre-stressing part along the first direction, so that the second pre-stressing part can be connected to the battery cell module.

19. The preloading device according to claim 6, characterized in that: The pre-pressing unit comprises at least one pre-pressing positioning portion, and the second pre-pressing support plate is positioned and connected to the support mechanism via the pre-pressing positioning portion.

20. The preloading device according to claim 6, characterized in that: The pre-pressing device comprises a transmission mechanism, the transmission mechanism is arranged on the support mechanism, and the second pre-pressing support plate is slidably connected to the support mechanism through the transmission mechanism.

21. The preloading device according to claim 20, characterized in that: The transmission mechanism comprises a third sliding portion, and the second pre-compression support plate is slidably connected to the support mechanism via the third sliding portion.

22. The preloading device according to claim 21, characterized in that: The transmission mechanism comprises a driving unit, and the driving unit is respectively connected to the second pre-compression support plate and the third sliding part, and the driving unit can drive the second pre-compression support plate to slide on the third sliding part.

23. The preloading device according to claim 22, characterized in that: The driving unit includes a third driving part, and the third driving part is connected to the second pre-compression support plate and the third sliding part respectively. The third driving part can drive the second pre-compression support plate to move.

24. The preloading device according to claim 23, characterized in that: The driving unit includes a transmission rack and a transmission gear, the driving end of the third driving part passes through the second pre-compression support plate and is connected to the transmission gear, the transmission gear is meshed and connected with the transmission rack, and the transmission rack is arranged on the support mechanism or the third sliding part; The third driving part is used to drive the transmission gear to move on the transmission rack, thereby driving the second pre-compression support plate to slide on the third sliding part.

25. The preloading device according to claim 23, characterized in that: The transmission mechanism comprises a traction assembly and a first support frame, the first support frame is connected to the second pre-compression support plate, the traction assembly is arranged on the support mechanism, and the traction assembly is connected to the first support frame; When the second pre-compression support plate moves, the traction mechanism guides the second pre-compression support plate to move along the first direction through the first support frame.

26. The preloading device according to claim 1, characterized in that: The pre-pressing device includes a positioning mechanism, and the positioning mechanism is installed on the supporting mechanism; wherein, one positioning mechanism is provided on both sides of the pre-pressing mechanism along the second direction, and the positioning mechanism is positioned and fitted with the corresponding battery cell module.

27. The preloading device according to claim 26, characterized in that: The positioning mechanism includes a second support frame, a fourth driving unit and a positioning plate. The fourth driving unit is arranged on the second support frame, the fourth driving unit is connected to the positioning plate, and the fourth driving unit is arranged to drive the positioning plate to move along the second direction so that the positioning plate fits the battery cell module.

28. The preloading device according to claim 27, characterized in that: The positioning mechanism includes a guide portion, which is disposed on the second support frame and is configured to limit the movement of the positioning plate along the second direction.

29. The preloading device according to claim 1, characterized in that: The pre-pressing device comprises a scanning mechanism, which is arranged on the supporting mechanism and is configured to scan the battery assembly.

30. The preloading device according to claim 29, characterized in that: The scanning mechanism includes a collection unit, a third support frame and a first protective cover; The third support frame is arranged on the support mechanism, the collection unit is arranged on the third support frame, the first protective cover covers the collection unit and is connected to the third support frame, and the collection unit is used to collect information of the battery module.

31. The preloading device according to claim 30, characterized in that: The pre-pressing device comprises a display unit, and the display unit is arranged on the third supporting frame.

32. The preloading device according to claim 1, characterized in that: The support mechanism includes a fourth support frame, a stepping platform, a safety grating and a second protective cover; The stepping platform is arranged on the side of the fourth support frame, and the height of the stepping platform is smaller than the height of the fourth support frame; The second protective cover is arranged on the fourth support frame, the safety grating is arranged along the circumference of the fourth support frame, and the safety grating is connected to the second protective cover.

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